Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * INET An implementation of the TCP/IP protocol suite for the LINUX |
| 3 | * operating system. INET is implemented using the BSD Socket |
| 4 | * interface as the means of communication with the user level. |
| 5 | * |
| 6 | * Definitions for the Interfaces handler. |
| 7 | * |
| 8 | * Version: @(#)dev.h 1.0.10 08/12/93 |
| 9 | * |
Jesper Juhl | 02c30a8 | 2005-05-05 16:16:16 -0700 | [diff] [blame] | 10 | * Authors: Ross Biro |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 11 | * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> |
| 12 | * Corey Minyard <wf-rch!minyard@relay.EU.net> |
| 13 | * Donald J. Becker, <becker@cesdis.gsfc.nasa.gov> |
Alan Cox | 113aa83 | 2008-10-13 19:01:08 -0700 | [diff] [blame] | 14 | * Alan Cox, <alan@lxorguk.ukuu.org.uk> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 15 | * Bjorn Ekwall. <bj0rn@blox.se> |
| 16 | * Pekka Riikonen <priikone@poseidon.pspt.fi> |
| 17 | * |
| 18 | * This program is free software; you can redistribute it and/or |
| 19 | * modify it under the terms of the GNU General Public License |
| 20 | * as published by the Free Software Foundation; either version |
| 21 | * 2 of the License, or (at your option) any later version. |
| 22 | * |
| 23 | * Moved to /usr/include/linux for NET3 |
| 24 | */ |
| 25 | #ifndef _LINUX_NETDEVICE_H |
| 26 | #define _LINUX_NETDEVICE_H |
| 27 | |
Jean Pihet | e8db0be | 2011-08-25 15:35:03 +0200 | [diff] [blame] | 28 | #include <linux/pm_qos.h> |
Al Viro | d7fe0f2 | 2006-12-03 23:15:30 -0500 | [diff] [blame] | 29 | #include <linux/timer.h> |
Paul Gortmaker | 187f188 | 2011-11-23 20:12:59 -0500 | [diff] [blame] | 30 | #include <linux/bug.h> |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 31 | #include <linux/delay.h> |
Arun Sharma | 60063497 | 2011-07-26 16:09:06 -0700 | [diff] [blame] | 32 | #include <linux/atomic.h> |
Eric Dumazet | 5351145 | 2014-10-08 08:19:27 -0700 | [diff] [blame] | 33 | #include <linux/prefetch.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | #include <asm/cache.h> |
| 35 | #include <asm/byteorder.h> |
| 36 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | #include <linux/percpu.h> |
David S. Miller | 4d5b78c | 2009-05-06 16:52:51 -0700 | [diff] [blame] | 38 | #include <linux/rculist.h> |
Chris Leech | db21733 | 2006-06-17 21:24:58 -0700 | [diff] [blame] | 39 | #include <linux/dmaengine.h> |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 40 | #include <linux/workqueue.h> |
Tom Herbert | 114cf58 | 2011-11-28 16:33:09 +0000 | [diff] [blame] | 41 | #include <linux/dynamic_queue_limits.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | |
Patrick McHardy | b1b67dd | 2009-04-20 04:49:28 +0000 | [diff] [blame] | 43 | #include <linux/ethtool.h> |
Daniel Lezcano | a050c33 | 2007-09-12 14:57:09 +0200 | [diff] [blame] | 44 | #include <net/net_namespace.h> |
Lennert Buytenhek | cf85d08 | 2008-10-07 13:45:02 +0000 | [diff] [blame] | 45 | #include <net/dsa.h> |
Jeff Kirsher | 7a6b6f5 | 2008-11-25 01:02:08 -0800 | [diff] [blame] | 46 | #ifdef CONFIG_DCB |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 47 | #include <net/dcbnl.h> |
| 48 | #endif |
Neil Horman | 5bc1421 | 2011-11-22 05:10:51 +0000 | [diff] [blame] | 49 | #include <net/netprio_cgroup.h> |
Daniel Lezcano | a050c33 | 2007-09-12 14:57:09 +0200 | [diff] [blame] | 50 | |
Michał Mirosław | a59e2ec | 2011-11-15 15:29:55 +0000 | [diff] [blame] | 51 | #include <linux/netdev_features.h> |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 52 | #include <linux/neighbour.h> |
David Howells | 607ca46 | 2012-10-13 10:46:48 +0100 | [diff] [blame] | 53 | #include <uapi/linux/netdevice.h> |
Moni Shoua | 61bd385 | 2015-02-03 16:48:29 +0200 | [diff] [blame] | 54 | #include <uapi/linux/if_bonding.h> |
Michał Mirosław | a59e2ec | 2011-11-15 15:29:55 +0000 | [diff] [blame] | 55 | |
Jeff Moyer | 115c1d6 | 2005-06-22 22:05:31 -0700 | [diff] [blame] | 56 | struct netpoll_info; |
Paul Gortmaker | 313162d | 2012-01-30 11:46:54 -0500 | [diff] [blame] | 57 | struct device; |
Richard Cochran | c1f19b5 | 2010-07-17 08:49:36 +0000 | [diff] [blame] | 58 | struct phy_device; |
Johannes Berg | 704232c | 2007-04-23 12:20:05 -0700 | [diff] [blame] | 59 | /* 802.11 specific */ |
| 60 | struct wireless_dev; |
Alexander Aring | 98a18b6 | 2014-11-02 06:44:54 +0100 | [diff] [blame] | 61 | /* 802.15.4 specific */ |
| 62 | struct wpan_dev; |
Robert Shearman | 03c5774 | 2015-04-22 11:14:37 +0100 | [diff] [blame] | 63 | struct mpls_dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 65 | void netdev_set_default_ethtool_ops(struct net_device *dev, |
| 66 | const struct ethtool_ops *ops); |
Stanislaw Gruszka | d07d750 | 2013-01-10 23:19:10 +0000 | [diff] [blame] | 67 | |
Jarek Poplawski | 9a1654b | 2009-11-15 07:20:12 +0000 | [diff] [blame] | 68 | /* Backlog congestion levels */ |
| 69 | #define NET_RX_SUCCESS 0 /* keep 'em coming, baby */ |
| 70 | #define NET_RX_DROP 1 /* packet dropped */ |
| 71 | |
Patrick McHardy | 572a9d7 | 2009-11-10 06:14:14 +0000 | [diff] [blame] | 72 | /* |
| 73 | * Transmit return codes: transmit return codes originate from three different |
| 74 | * namespaces: |
| 75 | * |
| 76 | * - qdisc return codes |
| 77 | * - driver transmit return codes |
| 78 | * - errno values |
| 79 | * |
| 80 | * Drivers are allowed to return any one of those in their hard_start_xmit() |
| 81 | * function. Real network devices commonly used with qdiscs should only return |
| 82 | * the driver transmit return codes though - when qdiscs are used, the actual |
| 83 | * transmission happens asynchronously, so the value is not propagated to |
| 84 | * higher layers. Virtual network devices transmit synchronously, in this case |
| 85 | * the driver transmit return codes are consumed by dev_queue_xmit(), all |
| 86 | * others are propagated to higher layers. |
| 87 | */ |
| 88 | |
| 89 | /* qdisc ->enqueue() return codes. */ |
| 90 | #define NET_XMIT_SUCCESS 0x00 |
Jarek Poplawski | 9a1654b | 2009-11-15 07:20:12 +0000 | [diff] [blame] | 91 | #define NET_XMIT_DROP 0x01 /* skb dropped */ |
| 92 | #define NET_XMIT_CN 0x02 /* congestion notification */ |
| 93 | #define NET_XMIT_POLICED 0x03 /* skb is shot by police */ |
| 94 | #define NET_XMIT_MASK 0x0f /* qdisc flags in net/sch_generic.h */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | |
Gerrit Renker | b9df3cb | 2006-11-14 11:21:36 -0200 | [diff] [blame] | 96 | /* NET_XMIT_CN is special. It does not guarantee that this packet is lost. It |
| 97 | * indicates that the device will soon be dropping packets, or already drops |
| 98 | * some packets of the same priority; prompting us to send less aggressively. */ |
Patrick McHardy | 572a9d7 | 2009-11-10 06:14:14 +0000 | [diff] [blame] | 99 | #define net_xmit_eval(e) ((e) == NET_XMIT_CN ? 0 : (e)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | #define net_xmit_errno(e) ((e) != NET_XMIT_CN ? -ENOBUFS : 0) |
| 101 | |
Stephen Hemminger | dc1f8bf | 2009-08-31 19:50:40 +0000 | [diff] [blame] | 102 | /* Driver transmit return codes */ |
Jarek Poplawski | 9a1654b | 2009-11-15 07:20:12 +0000 | [diff] [blame] | 103 | #define NETDEV_TX_MASK 0xf0 |
Patrick McHardy | 572a9d7 | 2009-11-10 06:14:14 +0000 | [diff] [blame] | 104 | |
Stephen Hemminger | dc1f8bf | 2009-08-31 19:50:40 +0000 | [diff] [blame] | 105 | enum netdev_tx { |
Patrick McHardy | 572a9d7 | 2009-11-10 06:14:14 +0000 | [diff] [blame] | 106 | __NETDEV_TX_MIN = INT_MIN, /* make sure enum is signed */ |
Jarek Poplawski | 9a1654b | 2009-11-15 07:20:12 +0000 | [diff] [blame] | 107 | NETDEV_TX_OK = 0x00, /* driver took care of packet */ |
| 108 | NETDEV_TX_BUSY = 0x10, /* driver tx path was busy*/ |
| 109 | NETDEV_TX_LOCKED = 0x20, /* driver tx lock was already taken */ |
Stephen Hemminger | dc1f8bf | 2009-08-31 19:50:40 +0000 | [diff] [blame] | 110 | }; |
| 111 | typedef enum netdev_tx netdev_tx_t; |
| 112 | |
Jarek Poplawski | 9a1654b | 2009-11-15 07:20:12 +0000 | [diff] [blame] | 113 | /* |
| 114 | * Current order: NETDEV_TX_MASK > NET_XMIT_MASK >= 0 is significant; |
| 115 | * hard_start_xmit() return < NET_XMIT_MASK means skb was consumed. |
| 116 | */ |
| 117 | static inline bool dev_xmit_complete(int rc) |
| 118 | { |
| 119 | /* |
| 120 | * Positive cases with an skb consumed by a driver: |
| 121 | * - successful transmission (rc == NETDEV_TX_OK) |
| 122 | * - error while transmitting (rc < 0) |
| 123 | * - error while queueing to a different device (rc & NET_XMIT_MASK) |
| 124 | */ |
| 125 | if (likely(rc < NET_XMIT_MASK)) |
| 126 | return true; |
| 127 | |
| 128 | return false; |
| 129 | } |
| 130 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | /* |
| 132 | * Compute the worst case header length according to the protocols |
| 133 | * used. |
| 134 | */ |
Graf Yang | fe2918b | 2009-02-05 21:26:19 -0800 | [diff] [blame] | 135 | |
Ben Hutchings | d11ead7 | 2011-11-25 14:40:26 +0000 | [diff] [blame] | 136 | #if defined(CONFIG_WLAN) || IS_ENABLED(CONFIG_AX25) |
David S. Miller | 8388e3d | 2008-05-12 20:17:33 -0700 | [diff] [blame] | 137 | # if defined(CONFIG_MAC80211_MESH) |
| 138 | # define LL_MAX_HEADER 128 |
| 139 | # else |
| 140 | # define LL_MAX_HEADER 96 |
| 141 | # endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | #else |
David S. Miller | 8388e3d | 2008-05-12 20:17:33 -0700 | [diff] [blame] | 143 | # define LL_MAX_HEADER 32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | #endif |
| 145 | |
Ben Hutchings | d11ead7 | 2011-11-25 14:40:26 +0000 | [diff] [blame] | 146 | #if !IS_ENABLED(CONFIG_NET_IPIP) && !IS_ENABLED(CONFIG_NET_IPGRE) && \ |
| 147 | !IS_ENABLED(CONFIG_IPV6_SIT) && !IS_ENABLED(CONFIG_IPV6_TUNNEL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | #define MAX_HEADER LL_MAX_HEADER |
| 149 | #else |
| 150 | #define MAX_HEADER (LL_MAX_HEADER + 48) |
| 151 | #endif |
| 152 | |
| 153 | /* |
Ben Hutchings | be1f3c2 | 2010-06-08 07:19:54 +0000 | [diff] [blame] | 154 | * Old network device statistics. Fields are native words |
| 155 | * (unsigned long) so they can be read and written atomically. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | */ |
Graf Yang | fe2918b | 2009-02-05 21:26:19 -0800 | [diff] [blame] | 157 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 158 | struct net_device_stats { |
Ben Hutchings | 3cfde79 | 2010-07-09 09:11:52 +0000 | [diff] [blame] | 159 | unsigned long rx_packets; |
| 160 | unsigned long tx_packets; |
| 161 | unsigned long rx_bytes; |
| 162 | unsigned long tx_bytes; |
| 163 | unsigned long rx_errors; |
| 164 | unsigned long tx_errors; |
| 165 | unsigned long rx_dropped; |
| 166 | unsigned long tx_dropped; |
| 167 | unsigned long multicast; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | unsigned long collisions; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | unsigned long rx_length_errors; |
Ben Hutchings | 3cfde79 | 2010-07-09 09:11:52 +0000 | [diff] [blame] | 170 | unsigned long rx_over_errors; |
| 171 | unsigned long rx_crc_errors; |
| 172 | unsigned long rx_frame_errors; |
| 173 | unsigned long rx_fifo_errors; |
| 174 | unsigned long rx_missed_errors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | unsigned long tx_aborted_errors; |
| 176 | unsigned long tx_carrier_errors; |
| 177 | unsigned long tx_fifo_errors; |
| 178 | unsigned long tx_heartbeat_errors; |
| 179 | unsigned long tx_window_errors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | unsigned long rx_compressed; |
| 181 | unsigned long tx_compressed; |
| 182 | }; |
| 183 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | |
| 185 | #include <linux/cache.h> |
| 186 | #include <linux/skbuff.h> |
| 187 | |
Eric Dumazet | adc9300 | 2011-11-17 03:13:26 +0000 | [diff] [blame] | 188 | #ifdef CONFIG_RPS |
Ingo Molnar | c5905af | 2012-02-24 08:31:31 +0100 | [diff] [blame] | 189 | #include <linux/static_key.h> |
| 190 | extern struct static_key rps_needed; |
Eric Dumazet | adc9300 | 2011-11-17 03:13:26 +0000 | [diff] [blame] | 191 | #endif |
| 192 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | struct neighbour; |
| 194 | struct neigh_parms; |
| 195 | struct sk_buff; |
| 196 | |
Jiri Pirko | f001fde | 2009-05-05 02:48:28 +0000 | [diff] [blame] | 197 | struct netdev_hw_addr { |
| 198 | struct list_head list; |
| 199 | unsigned char addr[MAX_ADDR_LEN]; |
| 200 | unsigned char type; |
Jiri Pirko | ccffad25 | 2009-05-22 23:22:17 +0000 | [diff] [blame] | 201 | #define NETDEV_HW_ADDR_T_LAN 1 |
| 202 | #define NETDEV_HW_ADDR_T_SAN 2 |
| 203 | #define NETDEV_HW_ADDR_T_SLAVE 3 |
| 204 | #define NETDEV_HW_ADDR_T_UNICAST 4 |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 205 | #define NETDEV_HW_ADDR_T_MULTICAST 5 |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 206 | bool global_use; |
Vlad Yasevich | 4cd729b0 | 2013-04-15 09:54:25 +0000 | [diff] [blame] | 207 | int sync_cnt; |
Eric Dumazet | 8f8f103 | 2010-09-19 11:24:02 -0700 | [diff] [blame] | 208 | int refcount; |
Vlad Yasevich | 4543fbe | 2013-04-02 17:10:07 -0400 | [diff] [blame] | 209 | int synced; |
Jiri Pirko | f001fde | 2009-05-05 02:48:28 +0000 | [diff] [blame] | 210 | struct rcu_head rcu_head; |
| 211 | }; |
| 212 | |
Jiri Pirko | 31278e7 | 2009-06-17 01:12:19 +0000 | [diff] [blame] | 213 | struct netdev_hw_addr_list { |
| 214 | struct list_head list; |
| 215 | int count; |
| 216 | }; |
| 217 | |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 218 | #define netdev_hw_addr_list_count(l) ((l)->count) |
| 219 | #define netdev_hw_addr_list_empty(l) (netdev_hw_addr_list_count(l) == 0) |
| 220 | #define netdev_hw_addr_list_for_each(ha, l) \ |
| 221 | list_for_each_entry(ha, &(l)->list, list) |
| 222 | |
| 223 | #define netdev_uc_count(dev) netdev_hw_addr_list_count(&(dev)->uc) |
| 224 | #define netdev_uc_empty(dev) netdev_hw_addr_list_empty(&(dev)->uc) |
Jiri Pirko | 32e7bfc | 2010-01-25 13:36:10 -0800 | [diff] [blame] | 225 | #define netdev_for_each_uc_addr(ha, dev) \ |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 226 | netdev_hw_addr_list_for_each(ha, &(dev)->uc) |
Jiri Pirko | 32e7bfc | 2010-01-25 13:36:10 -0800 | [diff] [blame] | 227 | |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 228 | #define netdev_mc_count(dev) netdev_hw_addr_list_count(&(dev)->mc) |
| 229 | #define netdev_mc_empty(dev) netdev_hw_addr_list_empty(&(dev)->mc) |
Pavel Roskin | 18e225f | 2010-04-07 16:40:09 -0700 | [diff] [blame] | 230 | #define netdev_for_each_mc_addr(ha, dev) \ |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 231 | netdev_hw_addr_list_for_each(ha, &(dev)->mc) |
Jiri Pirko | 6683ece | 2010-02-04 10:22:25 -0800 | [diff] [blame] | 232 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 233 | struct hh_cache { |
David S. Miller | f6b72b6 | 2011-07-14 07:53:20 -0700 | [diff] [blame] | 234 | u16 hh_len; |
David S. Miller | 5c25f68 | 2011-07-13 00:51:10 -0700 | [diff] [blame] | 235 | u16 __pad; |
Stephen Hemminger | 3644f0c | 2006-12-07 15:08:17 -0800 | [diff] [blame] | 236 | seqlock_t hh_lock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | |
| 238 | /* cached hardware header; allow for machine alignment needs. */ |
| 239 | #define HH_DATA_MOD 16 |
| 240 | #define HH_DATA_OFF(__len) \ |
Jiri Benc | 5ba0eac | 2005-06-02 16:48:05 -0700 | [diff] [blame] | 241 | (HH_DATA_MOD - (((__len - 1) & (HH_DATA_MOD - 1)) + 1)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | #define HH_DATA_ALIGN(__len) \ |
| 243 | (((__len)+(HH_DATA_MOD-1))&~(HH_DATA_MOD - 1)) |
| 244 | unsigned long hh_data[HH_DATA_ALIGN(LL_MAX_HEADER) / sizeof(long)]; |
| 245 | }; |
| 246 | |
| 247 | /* Reserve HH_DATA_MOD byte aligned hard_header_len, but at least that much. |
| 248 | * Alternative is: |
| 249 | * dev->hard_header_len ? (dev->hard_header_len + |
| 250 | * (HH_DATA_MOD - 1)) & ~(HH_DATA_MOD - 1) : 0 |
| 251 | * |
| 252 | * We could use other alignment values, but we must maintain the |
| 253 | * relationship HH alignment <= LL alignment. |
| 254 | */ |
| 255 | #define LL_RESERVED_SPACE(dev) \ |
Johannes Berg | f5184d2 | 2008-05-12 20:48:31 -0700 | [diff] [blame] | 256 | ((((dev)->hard_header_len+(dev)->needed_headroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | #define LL_RESERVED_SPACE_EXTRA(dev,extra) \ |
Johannes Berg | f5184d2 | 2008-05-12 20:48:31 -0700 | [diff] [blame] | 258 | ((((dev)->hard_header_len+(dev)->needed_headroom+(extra))&~(HH_DATA_MOD - 1)) + HH_DATA_MOD) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 260 | struct header_ops { |
| 261 | int (*create) (struct sk_buff *skb, struct net_device *dev, |
| 262 | unsigned short type, const void *daddr, |
Eric Dumazet | 95c9617 | 2012-04-15 05:58:06 +0000 | [diff] [blame] | 263 | const void *saddr, unsigned int len); |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 264 | int (*parse)(const struct sk_buff *skb, unsigned char *haddr); |
David S. Miller | e69dd33 | 2011-07-12 23:28:12 -0700 | [diff] [blame] | 265 | int (*cache)(const struct neighbour *neigh, struct hh_cache *hh, __be16 type); |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 266 | void (*cache_update)(struct hh_cache *hh, |
| 267 | const struct net_device *dev, |
| 268 | const unsigned char *haddr); |
| 269 | }; |
| 270 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | /* These flag bits are private to the generic network queueing |
| 272 | * layer, they may not be explicitly referenced by any other |
| 273 | * code. |
| 274 | */ |
| 275 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 276 | enum netdev_state_t { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | __LINK_STATE_START, |
| 278 | __LINK_STATE_PRESENT, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | __LINK_STATE_NOCARRIER, |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 280 | __LINK_STATE_LINKWATCH_PENDING, |
| 281 | __LINK_STATE_DORMANT, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | }; |
| 283 | |
| 284 | |
| 285 | /* |
| 286 | * This structure holds at boot time configured netdevice settings. They |
Graf Yang | fe2918b | 2009-02-05 21:26:19 -0800 | [diff] [blame] | 287 | * are then used in the device probing. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 288 | */ |
| 289 | struct netdev_boot_setup { |
| 290 | char name[IFNAMSIZ]; |
| 291 | struct ifmap map; |
| 292 | }; |
| 293 | #define NETDEV_BOOT_SETUP_MAX 8 |
| 294 | |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 295 | int __init netdev_boot_setup(char *str); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | |
| 297 | /* |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 298 | * Structure for NAPI scheduling similar to tasklet but with weighting |
| 299 | */ |
| 300 | struct napi_struct { |
| 301 | /* The poll_list must only be managed by the entity which |
| 302 | * changes the state of the NAPI_STATE_SCHED bit. This means |
| 303 | * whoever atomically sets that bit can add this napi_struct |
| 304 | * to the per-cpu poll_list, and whoever clears that bit |
| 305 | * can remove from the list right before clearing the bit. |
| 306 | */ |
| 307 | struct list_head poll_list; |
| 308 | |
| 309 | unsigned long state; |
| 310 | int weight; |
Eric Dumazet | 404f7c9 | 2012-09-26 07:07:47 +0000 | [diff] [blame] | 311 | unsigned int gro_count; |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 312 | int (*poll)(struct napi_struct *, int); |
| 313 | #ifdef CONFIG_NETPOLL |
| 314 | spinlock_t poll_lock; |
| 315 | int poll_owner; |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 316 | #endif |
Herbert Xu | 5d38a07 | 2009-01-04 16:13:40 -0800 | [diff] [blame] | 317 | struct net_device *dev; |
Herbert Xu | d565b0a | 2008-12-15 23:38:52 -0800 | [diff] [blame] | 318 | struct sk_buff *gro_list; |
Herbert Xu | 5d38a07 | 2009-01-04 16:13:40 -0800 | [diff] [blame] | 319 | struct sk_buff *skb; |
Eric Dumazet | 3b47d30 | 2014-11-06 21:09:44 -0800 | [diff] [blame] | 320 | struct hrtimer timer; |
Eric Dumazet | 404f7c9 | 2012-09-26 07:07:47 +0000 | [diff] [blame] | 321 | struct list_head dev_list; |
Eliezer Tamir | af12fa6 | 2013-06-10 11:39:41 +0300 | [diff] [blame] | 322 | struct hlist_node napi_hash_node; |
| 323 | unsigned int napi_id; |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 324 | }; |
| 325 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 326 | enum { |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 327 | NAPI_STATE_SCHED, /* Poll is scheduled */ |
David S. Miller | a0a4619 | 2008-01-07 20:35:07 -0800 | [diff] [blame] | 328 | NAPI_STATE_DISABLE, /* Disable pending */ |
Neil Horman | 7b363e4 | 2008-12-09 23:22:26 -0800 | [diff] [blame] | 329 | NAPI_STATE_NPSVC, /* Netpoll - don't dequeue from poll_list */ |
Eliezer Tamir | af12fa6 | 2013-06-10 11:39:41 +0300 | [diff] [blame] | 330 | NAPI_STATE_HASHED, /* In NAPI hash */ |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 331 | }; |
| 332 | |
Ben Hutchings | 5b252f0 | 2009-10-29 07:17:09 +0000 | [diff] [blame] | 333 | enum gro_result { |
Herbert Xu | d1c76af | 2009-03-16 10:50:02 -0700 | [diff] [blame] | 334 | GRO_MERGED, |
| 335 | GRO_MERGED_FREE, |
| 336 | GRO_HELD, |
| 337 | GRO_NORMAL, |
| 338 | GRO_DROP, |
| 339 | }; |
Ben Hutchings | 5b252f0 | 2009-10-29 07:17:09 +0000 | [diff] [blame] | 340 | typedef enum gro_result gro_result_t; |
Herbert Xu | d1c76af | 2009-03-16 10:50:02 -0700 | [diff] [blame] | 341 | |
Jiri Pirko | 8a4eb57 | 2011-03-12 03:14:39 +0000 | [diff] [blame] | 342 | /* |
| 343 | * enum rx_handler_result - Possible return values for rx_handlers. |
| 344 | * @RX_HANDLER_CONSUMED: skb was consumed by rx_handler, do not process it |
| 345 | * further. |
| 346 | * @RX_HANDLER_ANOTHER: Do another round in receive path. This is indicated in |
| 347 | * case skb->dev was changed by rx_handler. |
| 348 | * @RX_HANDLER_EXACT: Force exact delivery, no wildcard. |
| 349 | * @RX_HANDLER_PASS: Do nothing, passe the skb as if no rx_handler was called. |
| 350 | * |
| 351 | * rx_handlers are functions called from inside __netif_receive_skb(), to do |
| 352 | * special processing of the skb, prior to delivery to protocol handlers. |
| 353 | * |
| 354 | * Currently, a net_device can only have a single rx_handler registered. Trying |
| 355 | * to register a second rx_handler will return -EBUSY. |
| 356 | * |
| 357 | * To register a rx_handler on a net_device, use netdev_rx_handler_register(). |
| 358 | * To unregister a rx_handler on a net_device, use |
| 359 | * netdev_rx_handler_unregister(). |
| 360 | * |
| 361 | * Upon return, rx_handler is expected to tell __netif_receive_skb() what to |
| 362 | * do with the skb. |
| 363 | * |
| 364 | * If the rx_handler consumed to skb in some way, it should return |
| 365 | * RX_HANDLER_CONSUMED. This is appropriate when the rx_handler arranged for |
| 366 | * the skb to be delivered in some other ways. |
| 367 | * |
| 368 | * If the rx_handler changed skb->dev, to divert the skb to another |
| 369 | * net_device, it should return RX_HANDLER_ANOTHER. The rx_handler for the |
| 370 | * new device will be called if it exists. |
| 371 | * |
| 372 | * If the rx_handler consider the skb should be ignored, it should return |
| 373 | * RX_HANDLER_EXACT. The skb will only be delivered to protocol handlers that |
Adam Buchbinder | d93cf06 | 2012-09-19 21:47:58 -0400 | [diff] [blame] | 374 | * are registered on exact device (ptype->dev == skb->dev). |
Jiri Pirko | 8a4eb57 | 2011-03-12 03:14:39 +0000 | [diff] [blame] | 375 | * |
| 376 | * If the rx_handler didn't changed skb->dev, but want the skb to be normally |
| 377 | * delivered, it should return RX_HANDLER_PASS. |
| 378 | * |
| 379 | * A device without a registered rx_handler will behave as if rx_handler |
| 380 | * returned RX_HANDLER_PASS. |
| 381 | */ |
| 382 | |
| 383 | enum rx_handler_result { |
| 384 | RX_HANDLER_CONSUMED, |
| 385 | RX_HANDLER_ANOTHER, |
| 386 | RX_HANDLER_EXACT, |
| 387 | RX_HANDLER_PASS, |
| 388 | }; |
| 389 | typedef enum rx_handler_result rx_handler_result_t; |
| 390 | typedef rx_handler_result_t rx_handler_func_t(struct sk_buff **pskb); |
Jiri Pirko | ab95bfe | 2010-06-01 21:52:08 +0000 | [diff] [blame] | 391 | |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 392 | void __napi_schedule(struct napi_struct *n); |
Eric Dumazet | bc9ad16 | 2014-10-28 18:05:13 -0700 | [diff] [blame] | 393 | void __napi_schedule_irqoff(struct napi_struct *n); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 394 | |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 395 | static inline bool napi_disable_pending(struct napi_struct *n) |
David S. Miller | a0a4619 | 2008-01-07 20:35:07 -0800 | [diff] [blame] | 396 | { |
| 397 | return test_bit(NAPI_STATE_DISABLE, &n->state); |
| 398 | } |
| 399 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 400 | /** |
| 401 | * napi_schedule_prep - check if napi can be scheduled |
| 402 | * @n: napi context |
| 403 | * |
| 404 | * Test if NAPI routine is already running, and if not mark |
| 405 | * it as running. This is used as a condition variable |
David S. Miller | a0a4619 | 2008-01-07 20:35:07 -0800 | [diff] [blame] | 406 | * insure only one NAPI poll instance runs. We also make |
| 407 | * sure there is no pending NAPI disable. |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 408 | */ |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 409 | static inline bool napi_schedule_prep(struct napi_struct *n) |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 410 | { |
David S. Miller | a0a4619 | 2008-01-07 20:35:07 -0800 | [diff] [blame] | 411 | return !napi_disable_pending(n) && |
| 412 | !test_and_set_bit(NAPI_STATE_SCHED, &n->state); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 413 | } |
| 414 | |
| 415 | /** |
| 416 | * napi_schedule - schedule NAPI poll |
| 417 | * @n: napi context |
| 418 | * |
| 419 | * Schedule NAPI poll routine to be called if it is not already |
| 420 | * running. |
| 421 | */ |
| 422 | static inline void napi_schedule(struct napi_struct *n) |
| 423 | { |
| 424 | if (napi_schedule_prep(n)) |
| 425 | __napi_schedule(n); |
| 426 | } |
| 427 | |
Eric Dumazet | bc9ad16 | 2014-10-28 18:05:13 -0700 | [diff] [blame] | 428 | /** |
| 429 | * napi_schedule_irqoff - schedule NAPI poll |
| 430 | * @n: napi context |
| 431 | * |
| 432 | * Variant of napi_schedule(), assuming hard irqs are masked. |
| 433 | */ |
| 434 | static inline void napi_schedule_irqoff(struct napi_struct *n) |
| 435 | { |
| 436 | if (napi_schedule_prep(n)) |
| 437 | __napi_schedule_irqoff(n); |
| 438 | } |
| 439 | |
Roland Dreier | bfe13f5 | 2007-10-09 15:47:37 -0700 | [diff] [blame] | 440 | /* Try to reschedule poll. Called by dev->poll() after napi_complete(). */ |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 441 | static inline bool napi_reschedule(struct napi_struct *napi) |
Roland Dreier | bfe13f5 | 2007-10-09 15:47:37 -0700 | [diff] [blame] | 442 | { |
| 443 | if (napi_schedule_prep(napi)) { |
| 444 | __napi_schedule(napi); |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 445 | return true; |
Roland Dreier | bfe13f5 | 2007-10-09 15:47:37 -0700 | [diff] [blame] | 446 | } |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 447 | return false; |
Roland Dreier | bfe13f5 | 2007-10-09 15:47:37 -0700 | [diff] [blame] | 448 | } |
| 449 | |
Eric Dumazet | 3b47d30 | 2014-11-06 21:09:44 -0800 | [diff] [blame] | 450 | void __napi_complete(struct napi_struct *n); |
| 451 | void napi_complete_done(struct napi_struct *n, int work_done); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 452 | /** |
| 453 | * napi_complete - NAPI processing complete |
| 454 | * @n: napi context |
| 455 | * |
| 456 | * Mark NAPI processing as complete. |
Eric Dumazet | 3b47d30 | 2014-11-06 21:09:44 -0800 | [diff] [blame] | 457 | * Consider using napi_complete_done() instead. |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 458 | */ |
Eric Dumazet | 3b47d30 | 2014-11-06 21:09:44 -0800 | [diff] [blame] | 459 | static inline void napi_complete(struct napi_struct *n) |
| 460 | { |
| 461 | return napi_complete_done(n, 0); |
| 462 | } |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 463 | |
| 464 | /** |
Eliezer Tamir | af12fa6 | 2013-06-10 11:39:41 +0300 | [diff] [blame] | 465 | * napi_by_id - lookup a NAPI by napi_id |
| 466 | * @napi_id: hashed napi_id |
| 467 | * |
| 468 | * lookup @napi_id in napi_hash table |
| 469 | * must be called under rcu_read_lock() |
| 470 | */ |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 471 | struct napi_struct *napi_by_id(unsigned int napi_id); |
Eliezer Tamir | af12fa6 | 2013-06-10 11:39:41 +0300 | [diff] [blame] | 472 | |
| 473 | /** |
| 474 | * napi_hash_add - add a NAPI to global hashtable |
| 475 | * @napi: napi context |
| 476 | * |
| 477 | * generate a new napi_id and store a @napi under it in napi_hash |
| 478 | */ |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 479 | void napi_hash_add(struct napi_struct *napi); |
Eliezer Tamir | af12fa6 | 2013-06-10 11:39:41 +0300 | [diff] [blame] | 480 | |
| 481 | /** |
| 482 | * napi_hash_del - remove a NAPI from global table |
| 483 | * @napi: napi context |
| 484 | * |
| 485 | * Warning: caller must observe rcu grace period |
| 486 | * before freeing memory containing @napi |
| 487 | */ |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 488 | void napi_hash_del(struct napi_struct *napi); |
Eliezer Tamir | af12fa6 | 2013-06-10 11:39:41 +0300 | [diff] [blame] | 489 | |
| 490 | /** |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 491 | * napi_disable - prevent NAPI from scheduling |
| 492 | * @n: napi context |
| 493 | * |
| 494 | * Stop NAPI from being scheduled on this context. |
| 495 | * Waits till any outstanding processing completes. |
| 496 | */ |
Eric Dumazet | 3b47d30 | 2014-11-06 21:09:44 -0800 | [diff] [blame] | 497 | void napi_disable(struct napi_struct *n); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 498 | |
| 499 | /** |
| 500 | * napi_enable - enable NAPI scheduling |
| 501 | * @n: napi context |
| 502 | * |
| 503 | * Resume NAPI from being scheduled on this context. |
| 504 | * Must be paired with napi_disable. |
| 505 | */ |
| 506 | static inline void napi_enable(struct napi_struct *n) |
| 507 | { |
| 508 | BUG_ON(!test_bit(NAPI_STATE_SCHED, &n->state)); |
Peter Zijlstra | 4e857c5 | 2014-03-17 18:06:10 +0100 | [diff] [blame] | 509 | smp_mb__before_atomic(); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 510 | clear_bit(NAPI_STATE_SCHED, &n->state); |
| 511 | } |
| 512 | |
Stephen Hemminger | c264c3d | 2007-10-17 13:26:41 -0700 | [diff] [blame] | 513 | #ifdef CONFIG_SMP |
| 514 | /** |
| 515 | * napi_synchronize - wait until NAPI is not running |
| 516 | * @n: napi context |
| 517 | * |
| 518 | * Wait until NAPI is done being scheduled on this context. |
| 519 | * Waits till any outstanding processing completes but |
| 520 | * does not disable future activations. |
| 521 | */ |
| 522 | static inline void napi_synchronize(const struct napi_struct *n) |
| 523 | { |
| 524 | while (test_bit(NAPI_STATE_SCHED, &n->state)) |
| 525 | msleep(1); |
| 526 | } |
| 527 | #else |
| 528 | # define napi_synchronize(n) barrier() |
| 529 | #endif |
| 530 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 531 | enum netdev_queue_state_t { |
Tom Herbert | 73466498 | 2011-11-28 16:32:44 +0000 | [diff] [blame] | 532 | __QUEUE_STATE_DRV_XOFF, |
| 533 | __QUEUE_STATE_STACK_XOFF, |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 534 | __QUEUE_STATE_FROZEN, |
David S. Miller | 79d1638 | 2008-07-08 23:14:46 -0700 | [diff] [blame] | 535 | }; |
Daniel Borkmann | 8e2f1a6 | 2014-04-02 20:52:57 +0200 | [diff] [blame] | 536 | |
| 537 | #define QUEUE_STATE_DRV_XOFF (1 << __QUEUE_STATE_DRV_XOFF) |
| 538 | #define QUEUE_STATE_STACK_XOFF (1 << __QUEUE_STATE_STACK_XOFF) |
| 539 | #define QUEUE_STATE_FROZEN (1 << __QUEUE_STATE_FROZEN) |
| 540 | |
| 541 | #define QUEUE_STATE_ANY_XOFF (QUEUE_STATE_DRV_XOFF | QUEUE_STATE_STACK_XOFF) |
| 542 | #define QUEUE_STATE_ANY_XOFF_OR_FROZEN (QUEUE_STATE_ANY_XOFF | \ |
| 543 | QUEUE_STATE_FROZEN) |
| 544 | #define QUEUE_STATE_DRV_XOFF_OR_FROZEN (QUEUE_STATE_DRV_XOFF | \ |
| 545 | QUEUE_STATE_FROZEN) |
| 546 | |
Tom Herbert | 73466498 | 2011-11-28 16:32:44 +0000 | [diff] [blame] | 547 | /* |
| 548 | * __QUEUE_STATE_DRV_XOFF is used by drivers to stop the transmit queue. The |
| 549 | * netif_tx_* functions below are used to manipulate this flag. The |
| 550 | * __QUEUE_STATE_STACK_XOFF flag is used by the stack to stop the transmit |
| 551 | * queue independently. The netif_xmit_*stopped functions below are called |
| 552 | * to check if the queue has been stopped by the driver or stack (either |
| 553 | * of the XOFF bits are set in the state). Drivers should not need to call |
| 554 | * netif_xmit*stopped functions, they should only be using netif_tx_*. |
| 555 | */ |
David S. Miller | 79d1638 | 2008-07-08 23:14:46 -0700 | [diff] [blame] | 556 | |
David S. Miller | bb949fb | 2008-07-08 16:55:56 -0700 | [diff] [blame] | 557 | struct netdev_queue { |
Eric Dumazet | 6a321cb | 2009-04-28 04:43:42 -0700 | [diff] [blame] | 558 | /* |
| 559 | * read mostly part |
| 560 | */ |
David S. Miller | bb949fb | 2008-07-08 16:55:56 -0700 | [diff] [blame] | 561 | struct net_device *dev; |
John Fastabend | 46e5da4 | 2014-09-12 20:04:52 -0700 | [diff] [blame] | 562 | struct Qdisc __rcu *qdisc; |
David S. Miller | b0e1e64 | 2008-07-08 17:42:10 -0700 | [diff] [blame] | 563 | struct Qdisc *qdisc_sleeping; |
david decotigny | ccf5ff6 | 2011-11-16 12:15:10 +0000 | [diff] [blame] | 564 | #ifdef CONFIG_SYSFS |
Tom Herbert | 1d24eb4 | 2010-11-21 13:17:27 +0000 | [diff] [blame] | 565 | struct kobject kobj; |
| 566 | #endif |
Eric Dumazet | f2cd2d3 | 2010-11-29 08:14:37 +0000 | [diff] [blame] | 567 | #if defined(CONFIG_XPS) && defined(CONFIG_NUMA) |
| 568 | int numa_node; |
| 569 | #endif |
Eric Dumazet | 6a321cb | 2009-04-28 04:43:42 -0700 | [diff] [blame] | 570 | /* |
| 571 | * write mostly part |
| 572 | */ |
| 573 | spinlock_t _xmit_lock ____cacheline_aligned_in_smp; |
| 574 | int xmit_lock_owner; |
Eric Dumazet | 9d21493 | 2009-05-17 20:55:16 -0700 | [diff] [blame] | 575 | /* |
| 576 | * please use this field instead of dev->trans_start |
| 577 | */ |
| 578 | unsigned long trans_start; |
david decotigny | ccf5ff6 | 2011-11-16 12:15:10 +0000 | [diff] [blame] | 579 | |
| 580 | /* |
| 581 | * Number of TX timeouts for this queue |
| 582 | * (/sys/class/net/DEV/Q/trans_timeout) |
| 583 | */ |
| 584 | unsigned long trans_timeout; |
Tom Herbert | 114cf58 | 2011-11-28 16:33:09 +0000 | [diff] [blame] | 585 | |
| 586 | unsigned long state; |
| 587 | |
| 588 | #ifdef CONFIG_BQL |
| 589 | struct dql dql; |
| 590 | #endif |
John Fastabend | 822b3b2 | 2015-03-18 14:57:33 +0200 | [diff] [blame] | 591 | unsigned long tx_maxrate; |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 592 | } ____cacheline_aligned_in_smp; |
David S. Miller | bb949fb | 2008-07-08 16:55:56 -0700 | [diff] [blame] | 593 | |
Eric Dumazet | f2cd2d3 | 2010-11-29 08:14:37 +0000 | [diff] [blame] | 594 | static inline int netdev_queue_numa_node_read(const struct netdev_queue *q) |
| 595 | { |
| 596 | #if defined(CONFIG_XPS) && defined(CONFIG_NUMA) |
| 597 | return q->numa_node; |
| 598 | #else |
Changli Gao | b236da6 | 2010-12-14 03:09:15 +0000 | [diff] [blame] | 599 | return NUMA_NO_NODE; |
Eric Dumazet | f2cd2d3 | 2010-11-29 08:14:37 +0000 | [diff] [blame] | 600 | #endif |
| 601 | } |
| 602 | |
| 603 | static inline void netdev_queue_numa_node_write(struct netdev_queue *q, int node) |
| 604 | { |
| 605 | #if defined(CONFIG_XPS) && defined(CONFIG_NUMA) |
| 606 | q->numa_node = node; |
| 607 | #endif |
| 608 | } |
| 609 | |
Eric Dumazet | df33454 | 2010-03-24 19:13:54 +0000 | [diff] [blame] | 610 | #ifdef CONFIG_RPS |
Tom Herbert | 0a9627f | 2010-03-16 08:03:29 +0000 | [diff] [blame] | 611 | /* |
| 612 | * This structure holds an RPS map which can be of variable length. The |
| 613 | * map is an array of CPUs. |
| 614 | */ |
| 615 | struct rps_map { |
| 616 | unsigned int len; |
| 617 | struct rcu_head rcu; |
| 618 | u16 cpus[0]; |
| 619 | }; |
Eric Dumazet | 60b778c | 2011-12-24 06:56:49 +0000 | [diff] [blame] | 620 | #define RPS_MAP_SIZE(_num) (sizeof(struct rps_map) + ((_num) * sizeof(u16))) |
Tom Herbert | 0a9627f | 2010-03-16 08:03:29 +0000 | [diff] [blame] | 621 | |
Tom Herbert | fec5e65 | 2010-04-16 16:01:27 -0700 | [diff] [blame] | 622 | /* |
Ben Hutchings | c445477 | 2011-01-19 11:03:53 +0000 | [diff] [blame] | 623 | * The rps_dev_flow structure contains the mapping of a flow to a CPU, the |
| 624 | * tail pointer for that CPU's input queue at the time of last enqueue, and |
| 625 | * a hardware filter index. |
Tom Herbert | fec5e65 | 2010-04-16 16:01:27 -0700 | [diff] [blame] | 626 | */ |
| 627 | struct rps_dev_flow { |
| 628 | u16 cpu; |
Ben Hutchings | c445477 | 2011-01-19 11:03:53 +0000 | [diff] [blame] | 629 | u16 filter; |
Tom Herbert | fec5e65 | 2010-04-16 16:01:27 -0700 | [diff] [blame] | 630 | unsigned int last_qtail; |
| 631 | }; |
Ben Hutchings | c445477 | 2011-01-19 11:03:53 +0000 | [diff] [blame] | 632 | #define RPS_NO_FILTER 0xffff |
Tom Herbert | fec5e65 | 2010-04-16 16:01:27 -0700 | [diff] [blame] | 633 | |
| 634 | /* |
| 635 | * The rps_dev_flow_table structure contains a table of flow mappings. |
| 636 | */ |
| 637 | struct rps_dev_flow_table { |
| 638 | unsigned int mask; |
| 639 | struct rcu_head rcu; |
Tom Herbert | fec5e65 | 2010-04-16 16:01:27 -0700 | [diff] [blame] | 640 | struct rps_dev_flow flows[0]; |
| 641 | }; |
| 642 | #define RPS_DEV_FLOW_TABLE_SIZE(_num) (sizeof(struct rps_dev_flow_table) + \ |
Eric Dumazet | 60b778c | 2011-12-24 06:56:49 +0000 | [diff] [blame] | 643 | ((_num) * sizeof(struct rps_dev_flow))) |
Tom Herbert | fec5e65 | 2010-04-16 16:01:27 -0700 | [diff] [blame] | 644 | |
| 645 | /* |
| 646 | * The rps_sock_flow_table contains mappings of flows to the last CPU |
| 647 | * on which they were processed by the application (set in recvmsg). |
Eric Dumazet | 567e4b7 | 2015-02-06 12:59:01 -0800 | [diff] [blame] | 648 | * Each entry is a 32bit value. Upper part is the high order bits |
| 649 | * of flow hash, lower part is cpu number. |
| 650 | * rps_cpu_mask is used to partition the space, depending on number of |
| 651 | * possible cpus : rps_cpu_mask = roundup_pow_of_two(nr_cpu_ids) - 1 |
| 652 | * For example, if 64 cpus are possible, rps_cpu_mask = 0x3f, |
| 653 | * meaning we use 32-6=26 bits for the hash. |
Tom Herbert | fec5e65 | 2010-04-16 16:01:27 -0700 | [diff] [blame] | 654 | */ |
| 655 | struct rps_sock_flow_table { |
Eric Dumazet | 567e4b7 | 2015-02-06 12:59:01 -0800 | [diff] [blame] | 656 | u32 mask; |
Eric Dumazet | 93c1af6 | 2015-02-08 20:39:13 -0800 | [diff] [blame] | 657 | |
| 658 | u32 ents[0] ____cacheline_aligned_in_smp; |
Tom Herbert | fec5e65 | 2010-04-16 16:01:27 -0700 | [diff] [blame] | 659 | }; |
Eric Dumazet | 567e4b7 | 2015-02-06 12:59:01 -0800 | [diff] [blame] | 660 | #define RPS_SOCK_FLOW_TABLE_SIZE(_num) (offsetof(struct rps_sock_flow_table, ents[_num])) |
Tom Herbert | fec5e65 | 2010-04-16 16:01:27 -0700 | [diff] [blame] | 661 | |
| 662 | #define RPS_NO_CPU 0xffff |
| 663 | |
Eric Dumazet | 567e4b7 | 2015-02-06 12:59:01 -0800 | [diff] [blame] | 664 | extern u32 rps_cpu_mask; |
| 665 | extern struct rps_sock_flow_table __rcu *rps_sock_flow_table; |
| 666 | |
Tom Herbert | fec5e65 | 2010-04-16 16:01:27 -0700 | [diff] [blame] | 667 | static inline void rps_record_sock_flow(struct rps_sock_flow_table *table, |
| 668 | u32 hash) |
| 669 | { |
| 670 | if (table && hash) { |
Eric Dumazet | 567e4b7 | 2015-02-06 12:59:01 -0800 | [diff] [blame] | 671 | unsigned int index = hash & table->mask; |
| 672 | u32 val = hash & ~rps_cpu_mask; |
Tom Herbert | fec5e65 | 2010-04-16 16:01:27 -0700 | [diff] [blame] | 673 | |
| 674 | /* We only give a hint, preemption can change cpu under us */ |
Eric Dumazet | 567e4b7 | 2015-02-06 12:59:01 -0800 | [diff] [blame] | 675 | val |= raw_smp_processor_id(); |
Tom Herbert | fec5e65 | 2010-04-16 16:01:27 -0700 | [diff] [blame] | 676 | |
Eric Dumazet | 567e4b7 | 2015-02-06 12:59:01 -0800 | [diff] [blame] | 677 | if (table->ents[index] != val) |
| 678 | table->ents[index] = val; |
Tom Herbert | fec5e65 | 2010-04-16 16:01:27 -0700 | [diff] [blame] | 679 | } |
| 680 | } |
| 681 | |
Ben Hutchings | c445477 | 2011-01-19 11:03:53 +0000 | [diff] [blame] | 682 | #ifdef CONFIG_RFS_ACCEL |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 683 | bool rps_may_expire_flow(struct net_device *dev, u16 rxq_index, u32 flow_id, |
| 684 | u16 filter_id); |
Ben Hutchings | c445477 | 2011-01-19 11:03:53 +0000 | [diff] [blame] | 685 | #endif |
Michael Dalton | a953be5 | 2014-01-16 22:23:28 -0800 | [diff] [blame] | 686 | #endif /* CONFIG_RPS */ |
Ben Hutchings | c445477 | 2011-01-19 11:03:53 +0000 | [diff] [blame] | 687 | |
Tom Herbert | 0a9627f | 2010-03-16 08:03:29 +0000 | [diff] [blame] | 688 | /* This structure contains an instance of an RX queue. */ |
| 689 | struct netdev_rx_queue { |
Michael Dalton | a953be5 | 2014-01-16 22:23:28 -0800 | [diff] [blame] | 690 | #ifdef CONFIG_RPS |
Eric Dumazet | 6e3f7fa | 2010-10-25 03:02:02 +0000 | [diff] [blame] | 691 | struct rps_map __rcu *rps_map; |
| 692 | struct rps_dev_flow_table __rcu *rps_flow_table; |
Michael Dalton | a953be5 | 2014-01-16 22:23:28 -0800 | [diff] [blame] | 693 | #endif |
Eric Dumazet | 6e3f7fa | 2010-10-25 03:02:02 +0000 | [diff] [blame] | 694 | struct kobject kobj; |
Tom Herbert | fe82224 | 2010-11-09 10:47:38 +0000 | [diff] [blame] | 695 | struct net_device *dev; |
Tom Herbert | 0a9627f | 2010-03-16 08:03:29 +0000 | [diff] [blame] | 696 | } ____cacheline_aligned_in_smp; |
Michael Dalton | a953be5 | 2014-01-16 22:23:28 -0800 | [diff] [blame] | 697 | |
| 698 | /* |
| 699 | * RX queue sysfs structures and functions. |
| 700 | */ |
| 701 | struct rx_queue_attribute { |
| 702 | struct attribute attr; |
| 703 | ssize_t (*show)(struct netdev_rx_queue *queue, |
| 704 | struct rx_queue_attribute *attr, char *buf); |
| 705 | ssize_t (*store)(struct netdev_rx_queue *queue, |
| 706 | struct rx_queue_attribute *attr, const char *buf, size_t len); |
| 707 | }; |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 708 | |
Tom Herbert | bf26414 | 2010-11-26 08:36:09 +0000 | [diff] [blame] | 709 | #ifdef CONFIG_XPS |
| 710 | /* |
| 711 | * This structure holds an XPS map which can be of variable length. The |
| 712 | * map is an array of queues. |
| 713 | */ |
| 714 | struct xps_map { |
| 715 | unsigned int len; |
| 716 | unsigned int alloc_len; |
| 717 | struct rcu_head rcu; |
| 718 | u16 queues[0]; |
| 719 | }; |
Eric Dumazet | 60b778c | 2011-12-24 06:56:49 +0000 | [diff] [blame] | 720 | #define XPS_MAP_SIZE(_num) (sizeof(struct xps_map) + ((_num) * sizeof(u16))) |
Tom Herbert | bf26414 | 2010-11-26 08:36:09 +0000 | [diff] [blame] | 721 | #define XPS_MIN_MAP_ALLOC ((L1_CACHE_BYTES - sizeof(struct xps_map)) \ |
| 722 | / sizeof(u16)) |
| 723 | |
| 724 | /* |
| 725 | * This structure holds all XPS maps for device. Maps are indexed by CPU. |
| 726 | */ |
| 727 | struct xps_dev_maps { |
| 728 | struct rcu_head rcu; |
Eric Dumazet | a417786 | 2010-11-28 21:43:02 +0000 | [diff] [blame] | 729 | struct xps_map __rcu *cpu_map[0]; |
Tom Herbert | bf26414 | 2010-11-26 08:36:09 +0000 | [diff] [blame] | 730 | }; |
| 731 | #define XPS_DEV_MAPS_SIZE (sizeof(struct xps_dev_maps) + \ |
| 732 | (nr_cpu_ids * sizeof(struct xps_map *))) |
| 733 | #endif /* CONFIG_XPS */ |
| 734 | |
John Fastabend | 4f57c08 | 2011-01-17 08:06:04 +0000 | [diff] [blame] | 735 | #define TC_MAX_QUEUE 16 |
| 736 | #define TC_BITMASK 15 |
| 737 | /* HW offloaded queuing disciplines txq count and offset maps */ |
| 738 | struct netdev_tc_txq { |
| 739 | u16 count; |
| 740 | u16 offset; |
| 741 | }; |
| 742 | |
Neerav Parikh | 68bad94 | 2012-01-04 20:23:39 +0000 | [diff] [blame] | 743 | #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) |
| 744 | /* |
| 745 | * This structure is to hold information about the device |
| 746 | * configured to run FCoE protocol stack. |
| 747 | */ |
| 748 | struct netdev_fcoe_hbainfo { |
| 749 | char manufacturer[64]; |
| 750 | char serial_number[64]; |
| 751 | char hardware_version[64]; |
| 752 | char driver_version[64]; |
| 753 | char optionrom_version[64]; |
| 754 | char firmware_version[64]; |
| 755 | char model[256]; |
| 756 | char model_description[256]; |
| 757 | }; |
| 758 | #endif |
| 759 | |
Jiri Pirko | 02637fc | 2014-11-28 14:34:16 +0100 | [diff] [blame] | 760 | #define MAX_PHYS_ITEM_ID_LEN 32 |
Jiri Pirko | 66b52b0 | 2013-07-29 18:16:49 +0200 | [diff] [blame] | 761 | |
Jiri Pirko | 02637fc | 2014-11-28 14:34:16 +0100 | [diff] [blame] | 762 | /* This structure holds a unique identifier to identify some |
| 763 | * physical item (port for example) used by a netdevice. |
Jiri Pirko | 66b52b0 | 2013-07-29 18:16:49 +0200 | [diff] [blame] | 764 | */ |
Jiri Pirko | 02637fc | 2014-11-28 14:34:16 +0100 | [diff] [blame] | 765 | struct netdev_phys_item_id { |
| 766 | unsigned char id[MAX_PHYS_ITEM_ID_LEN]; |
Jiri Pirko | 66b52b0 | 2013-07-29 18:16:49 +0200 | [diff] [blame] | 767 | unsigned char id_len; |
| 768 | }; |
| 769 | |
Daniel Borkmann | 99932d4 | 2014-02-16 15:55:20 +0100 | [diff] [blame] | 770 | typedef u16 (*select_queue_fallback_t)(struct net_device *dev, |
| 771 | struct sk_buff *skb); |
| 772 | |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 773 | /* |
| 774 | * This structure defines the management hooks for network devices. |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 775 | * The following hooks can be defined; unless noted otherwise, they are |
| 776 | * optional and can be filled with a null pointer. |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 777 | * |
| 778 | * int (*ndo_init)(struct net_device *dev); |
| 779 | * This function is called once when network device is registered. |
| 780 | * The network device can use this to any late stage initializaton |
| 781 | * or semantic validattion. It can fail with an error code which will |
| 782 | * be propogated back to register_netdev |
| 783 | * |
| 784 | * void (*ndo_uninit)(struct net_device *dev); |
| 785 | * This function is called when device is unregistered or when registration |
| 786 | * fails. It is not called if init fails. |
| 787 | * |
| 788 | * int (*ndo_open)(struct net_device *dev); |
| 789 | * This function is called when network device transistions to the up |
| 790 | * state. |
| 791 | * |
| 792 | * int (*ndo_stop)(struct net_device *dev); |
| 793 | * This function is called when network device transistions to the down |
| 794 | * state. |
| 795 | * |
Stephen Hemminger | dc1f8bf | 2009-08-31 19:50:40 +0000 | [diff] [blame] | 796 | * netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb, |
| 797 | * struct net_device *dev); |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 798 | * Called when a packet needs to be transmitted. |
Rusty Russell | e79d842 | 2015-04-03 22:17:17 +1030 | [diff] [blame] | 799 | * Returns NETDEV_TX_OK. Can return NETDEV_TX_BUSY, but you should stop |
| 800 | * the queue before that can happen; it's for obsolete devices and weird |
| 801 | * corner cases, but the stack really does a non-trivial amount |
| 802 | * of useless work if you return NETDEV_TX_BUSY. |
Stephen Hemminger | dc1f8bf | 2009-08-31 19:50:40 +0000 | [diff] [blame] | 803 | * (can also return NETDEV_TX_LOCKED iff NETIF_F_LLTX) |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 804 | * Required can not be NULL. |
| 805 | * |
Jason Wang | f663dd9 | 2014-01-10 16:18:26 +0800 | [diff] [blame] | 806 | * u16 (*ndo_select_queue)(struct net_device *dev, struct sk_buff *skb, |
Daniel Borkmann | 99932d4 | 2014-02-16 15:55:20 +0100 | [diff] [blame] | 807 | * void *accel_priv, select_queue_fallback_t fallback); |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 808 | * Called to decide which queue to when device supports multiple |
| 809 | * transmit queues. |
| 810 | * |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 811 | * void (*ndo_change_rx_flags)(struct net_device *dev, int flags); |
| 812 | * This function is called to allow device receiver to make |
| 813 | * changes to configuration when multicast or promiscious is enabled. |
| 814 | * |
| 815 | * void (*ndo_set_rx_mode)(struct net_device *dev); |
| 816 | * This function is called device changes address list filtering. |
Jiri Pirko | 0178934 | 2011-08-16 06:29:00 +0000 | [diff] [blame] | 817 | * If driver handles unicast address filtering, it should set |
| 818 | * IFF_UNICAST_FLT to its priv_flags. |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 819 | * |
| 820 | * int (*ndo_set_mac_address)(struct net_device *dev, void *addr); |
| 821 | * This function is called when the Media Access Control address |
Mike Rapoport | 37b607c | 2009-04-27 05:45:54 -0700 | [diff] [blame] | 822 | * needs to be changed. If this interface is not defined, the |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 823 | * mac address can not be changed. |
| 824 | * |
| 825 | * int (*ndo_validate_addr)(struct net_device *dev); |
| 826 | * Test if Media Access Control address is valid for the device. |
| 827 | * |
| 828 | * int (*ndo_do_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd); |
| 829 | * Called when a user request an ioctl which can't be handled by |
| 830 | * the generic interface code. If not defined ioctl's return |
| 831 | * not supported error code. |
| 832 | * |
| 833 | * int (*ndo_set_config)(struct net_device *dev, struct ifmap *map); |
| 834 | * Used to set network devices bus interface parameters. This interface |
| 835 | * is retained for legacy reason, new devices should use the bus |
| 836 | * interface (PCI) for low level management. |
| 837 | * |
| 838 | * int (*ndo_change_mtu)(struct net_device *dev, int new_mtu); |
| 839 | * Called when a user wants to change the Maximum Transfer Unit |
| 840 | * of a device. If not defined, any request to change MTU will |
| 841 | * will return an error. |
| 842 | * |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 843 | * void (*ndo_tx_timeout)(struct net_device *dev); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 844 | * Callback uses when the transmitter has not made any progress |
| 845 | * for dev->watchdog ticks. |
| 846 | * |
Ben Hutchings | 3cfde79 | 2010-07-09 09:11:52 +0000 | [diff] [blame] | 847 | * struct rtnl_link_stats64* (*ndo_get_stats64)(struct net_device *dev, |
Eric Dumazet | 2817273 | 2010-07-07 14:58:56 -0700 | [diff] [blame] | 848 | * struct rtnl_link_stats64 *storage); |
Wolfram Sang | d308e38 | 2009-10-07 13:53:11 -0700 | [diff] [blame] | 849 | * struct net_device_stats* (*ndo_get_stats)(struct net_device *dev); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 850 | * Called when a user wants to get the network device usage |
Ben Hutchings | be1f3c2 | 2010-06-08 07:19:54 +0000 | [diff] [blame] | 851 | * statistics. Drivers must do one of the following: |
Ben Hutchings | 3cfde79 | 2010-07-09 09:11:52 +0000 | [diff] [blame] | 852 | * 1. Define @ndo_get_stats64 to fill in a zero-initialised |
| 853 | * rtnl_link_stats64 structure passed by the caller. |
Ben Hutchings | 82695d9 | 2010-06-15 15:08:48 -0700 | [diff] [blame] | 854 | * 2. Define @ndo_get_stats to update a net_device_stats structure |
Ben Hutchings | be1f3c2 | 2010-06-08 07:19:54 +0000 | [diff] [blame] | 855 | * (which should normally be dev->stats) and return a pointer to |
| 856 | * it. The structure may be changed asynchronously only if each |
| 857 | * field is written atomically. |
| 858 | * 3. Update dev->stats asynchronously and atomically, and define |
| 859 | * neither operation. |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 860 | * |
B Viswanath | 5d632cb | 2015-01-12 14:46:25 +0530 | [diff] [blame] | 861 | * int (*ndo_vlan_rx_add_vid)(struct net_device *dev, __be16 proto, u16 vid); |
Patrick McHardy | 80d5c36 | 2013-04-19 02:04:28 +0000 | [diff] [blame] | 862 | * If device support VLAN filtering this function is called when a |
| 863 | * VLAN id is registered. |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 864 | * |
B Viswanath | 5d632cb | 2015-01-12 14:46:25 +0530 | [diff] [blame] | 865 | * int (*ndo_vlan_rx_kill_vid)(struct net_device *dev, __be16 proto, u16 vid); |
Patrick McHardy | 80d5c36 | 2013-04-19 02:04:28 +0000 | [diff] [blame] | 866 | * If device support VLAN filtering this function is called when a |
| 867 | * VLAN id is unregistered. |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 868 | * |
| 869 | * void (*ndo_poll_controller)(struct net_device *dev); |
Williams, Mitch A | 95c26df | 2010-02-10 01:43:46 +0000 | [diff] [blame] | 870 | * |
| 871 | * SR-IOV management functions. |
| 872 | * int (*ndo_set_vf_mac)(struct net_device *dev, int vf, u8* mac); |
| 873 | * int (*ndo_set_vf_vlan)(struct net_device *dev, int vf, u16 vlan, u8 qos); |
Sucheta Chakraborty | ed61668 | 2014-05-22 09:59:05 -0400 | [diff] [blame] | 874 | * int (*ndo_set_vf_rate)(struct net_device *dev, int vf, int min_tx_rate, |
| 875 | * int max_tx_rate); |
Greg Rose | 5f8444a | 2011-10-08 03:05:24 +0000 | [diff] [blame] | 876 | * int (*ndo_set_vf_spoofchk)(struct net_device *dev, int vf, bool setting); |
Williams, Mitch A | 95c26df | 2010-02-10 01:43:46 +0000 | [diff] [blame] | 877 | * int (*ndo_get_vf_config)(struct net_device *dev, |
| 878 | * int vf, struct ifla_vf_info *ivf); |
Rony Efraim | 1d8faf4 | 2013-06-13 13:19:10 +0300 | [diff] [blame] | 879 | * int (*ndo_set_vf_link_state)(struct net_device *dev, int vf, int link_state); |
Scott Feldman | 57b6108 | 2010-05-17 22:49:55 -0700 | [diff] [blame] | 880 | * int (*ndo_set_vf_port)(struct net_device *dev, int vf, |
| 881 | * struct nlattr *port[]); |
Vlad Zolotarov | 01a3d79 | 2015-03-30 21:35:23 +0300 | [diff] [blame] | 882 | * |
| 883 | * Enable or disable the VF ability to query its RSS Redirection Table and |
| 884 | * Hash Key. This is needed since on some devices VF share this information |
| 885 | * with PF and querying it may adduce a theoretical security risk. |
| 886 | * int (*ndo_set_vf_rss_query_en)(struct net_device *dev, int vf, bool setting); |
Scott Feldman | 57b6108 | 2010-05-17 22:49:55 -0700 | [diff] [blame] | 887 | * int (*ndo_get_vf_port)(struct net_device *dev, int vf, struct sk_buff *skb); |
John Fastabend | 4f57c08 | 2011-01-17 08:06:04 +0000 | [diff] [blame] | 888 | * int (*ndo_setup_tc)(struct net_device *dev, u8 tc) |
| 889 | * Called to setup 'tc' number of traffic classes in the net device. This |
| 890 | * is always called from the stack with the rtnl lock held and netif tx |
| 891 | * queues stopped. This allows the netdevice to perform queue management |
| 892 | * safely. |
Ben Hutchings | c445477 | 2011-01-19 11:03:53 +0000 | [diff] [blame] | 893 | * |
Yi Zou | e9bce84 | 2011-03-09 08:48:03 +0000 | [diff] [blame] | 894 | * Fiber Channel over Ethernet (FCoE) offload functions. |
| 895 | * int (*ndo_fcoe_enable)(struct net_device *dev); |
| 896 | * Called when the FCoE protocol stack wants to start using LLD for FCoE |
| 897 | * so the underlying device can perform whatever needed configuration or |
| 898 | * initialization to support acceleration of FCoE traffic. |
| 899 | * |
| 900 | * int (*ndo_fcoe_disable)(struct net_device *dev); |
| 901 | * Called when the FCoE protocol stack wants to stop using LLD for FCoE |
| 902 | * so the underlying device can perform whatever needed clean-ups to |
| 903 | * stop supporting acceleration of FCoE traffic. |
| 904 | * |
| 905 | * int (*ndo_fcoe_ddp_setup)(struct net_device *dev, u16 xid, |
| 906 | * struct scatterlist *sgl, unsigned int sgc); |
| 907 | * Called when the FCoE Initiator wants to initialize an I/O that |
| 908 | * is a possible candidate for Direct Data Placement (DDP). The LLD can |
| 909 | * perform necessary setup and returns 1 to indicate the device is set up |
| 910 | * successfully to perform DDP on this I/O, otherwise this returns 0. |
| 911 | * |
| 912 | * int (*ndo_fcoe_ddp_done)(struct net_device *dev, u16 xid); |
| 913 | * Called when the FCoE Initiator/Target is done with the DDPed I/O as |
| 914 | * indicated by the FC exchange id 'xid', so the underlying device can |
| 915 | * clean up and reuse resources for later DDP requests. |
| 916 | * |
| 917 | * int (*ndo_fcoe_ddp_target)(struct net_device *dev, u16 xid, |
| 918 | * struct scatterlist *sgl, unsigned int sgc); |
| 919 | * Called when the FCoE Target wants to initialize an I/O that |
| 920 | * is a possible candidate for Direct Data Placement (DDP). The LLD can |
| 921 | * perform necessary setup and returns 1 to indicate the device is set up |
| 922 | * successfully to perform DDP on this I/O, otherwise this returns 0. |
| 923 | * |
Neerav Parikh | 68bad94 | 2012-01-04 20:23:39 +0000 | [diff] [blame] | 924 | * int (*ndo_fcoe_get_hbainfo)(struct net_device *dev, |
| 925 | * struct netdev_fcoe_hbainfo *hbainfo); |
| 926 | * Called when the FCoE Protocol stack wants information on the underlying |
| 927 | * device. This information is utilized by the FCoE protocol stack to |
| 928 | * register attributes with Fiber Channel management service as per the |
| 929 | * FC-GS Fabric Device Management Information(FDMI) specification. |
| 930 | * |
Yi Zou | e9bce84 | 2011-03-09 08:48:03 +0000 | [diff] [blame] | 931 | * int (*ndo_fcoe_get_wwn)(struct net_device *dev, u64 *wwn, int type); |
| 932 | * Called when the underlying device wants to override default World Wide |
| 933 | * Name (WWN) generation mechanism in FCoE protocol stack to pass its own |
| 934 | * World Wide Port Name (WWPN) or World Wide Node Name (WWNN) to the FCoE |
| 935 | * protocol stack to use. |
| 936 | * |
Ben Hutchings | c445477 | 2011-01-19 11:03:53 +0000 | [diff] [blame] | 937 | * RFS acceleration. |
| 938 | * int (*ndo_rx_flow_steer)(struct net_device *dev, const struct sk_buff *skb, |
| 939 | * u16 rxq_index, u32 flow_id); |
| 940 | * Set hardware filter for RFS. rxq_index is the target queue index; |
| 941 | * flow_id is a flow ID to be passed to rps_may_expire_flow() later. |
| 942 | * Return the filter ID on success, or a negative error code. |
Jiri Pirko | fbaec0e | 2011-02-13 10:15:37 +0000 | [diff] [blame] | 943 | * |
Jiri Pirko | 8b98a70 | 2013-01-03 22:49:02 +0000 | [diff] [blame] | 944 | * Slave management functions (for bridge, bonding, etc). |
Jiri Pirko | fbaec0e | 2011-02-13 10:15:37 +0000 | [diff] [blame] | 945 | * int (*ndo_add_slave)(struct net_device *dev, struct net_device *slave_dev); |
| 946 | * Called to make another netdev an underling. |
| 947 | * |
| 948 | * int (*ndo_del_slave)(struct net_device *dev, struct net_device *slave_dev); |
| 949 | * Called to release previously enslaved netdev. |
Michał Mirosław | 5455c69 | 2011-02-15 16:59:17 +0000 | [diff] [blame] | 950 | * |
| 951 | * Feature/offload setting functions. |
Michał Mirosław | c8f44af | 2011-11-15 15:29:55 +0000 | [diff] [blame] | 952 | * netdev_features_t (*ndo_fix_features)(struct net_device *dev, |
| 953 | * netdev_features_t features); |
Michał Mirosław | 5455c69 | 2011-02-15 16:59:17 +0000 | [diff] [blame] | 954 | * Adjusts the requested feature flags according to device-specific |
| 955 | * constraints, and returns the resulting flags. Must not modify |
| 956 | * the device state. |
| 957 | * |
Michał Mirosław | c8f44af | 2011-11-15 15:29:55 +0000 | [diff] [blame] | 958 | * int (*ndo_set_features)(struct net_device *dev, netdev_features_t features); |
Michał Mirosław | 5455c69 | 2011-02-15 16:59:17 +0000 | [diff] [blame] | 959 | * Called to update device configuration to new features. Passed |
| 960 | * feature set might be less than what was returned by ndo_fix_features()). |
| 961 | * Must return >0 or -errno if it changed dev->features itself. |
| 962 | * |
stephen hemminger | edc7d57 | 2012-10-01 12:32:33 +0000 | [diff] [blame] | 963 | * int (*ndo_fdb_add)(struct ndmsg *ndm, struct nlattr *tb[], |
| 964 | * struct net_device *dev, |
Jiri Pirko | f6f6424 | 2014-11-28 14:34:15 +0100 | [diff] [blame] | 965 | * const unsigned char *addr, u16 vid, u16 flags) |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 966 | * Adds an FDB entry to dev for addr. |
Vlad Yasevich | 1690be6 | 2013-02-13 12:00:18 +0000 | [diff] [blame] | 967 | * int (*ndo_fdb_del)(struct ndmsg *ndm, struct nlattr *tb[], |
| 968 | * struct net_device *dev, |
Jiri Pirko | f6f6424 | 2014-11-28 14:34:15 +0100 | [diff] [blame] | 969 | * const unsigned char *addr, u16 vid) |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 970 | * Deletes the FDB entry from dev coresponding to addr. |
| 971 | * int (*ndo_fdb_dump)(struct sk_buff *skb, struct netlink_callback *cb, |
Jamal Hadi Salim | 5d5eacb | 2014-07-10 07:01:58 -0400 | [diff] [blame] | 972 | * struct net_device *dev, struct net_device *filter_dev, |
| 973 | * int idx) |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 974 | * Used to add FDB entries to dump requests. Implementers should add |
| 975 | * entries to skb and update idx with the number of entries. |
John Fastabend | e5a55a8 | 2012-10-24 08:12:57 +0000 | [diff] [blame] | 976 | * |
Nicolas Dichtel | ad41faa | 2015-03-17 11:16:00 +0100 | [diff] [blame] | 977 | * int (*ndo_bridge_setlink)(struct net_device *dev, struct nlmsghdr *nlh, |
| 978 | * u16 flags) |
John Fastabend | e5a55a8 | 2012-10-24 08:12:57 +0000 | [diff] [blame] | 979 | * int (*ndo_bridge_getlink)(struct sk_buff *skb, u32 pid, u32 seq, |
Nicolas Dichtel | 46c264d | 2015-04-28 18:33:49 +0200 | [diff] [blame] | 980 | * struct net_device *dev, u32 filter_mask, |
| 981 | * int nlflags) |
Nicolas Dichtel | ad41faa | 2015-03-17 11:16:00 +0100 | [diff] [blame] | 982 | * int (*ndo_bridge_dellink)(struct net_device *dev, struct nlmsghdr *nlh, |
| 983 | * u16 flags); |
Jiri Pirko | 4bf84c3 | 2012-12-27 23:49:37 +0000 | [diff] [blame] | 984 | * |
| 985 | * int (*ndo_change_carrier)(struct net_device *dev, bool new_carrier); |
| 986 | * Called to change device carrier. Soft-devices (like dummy, team, etc) |
| 987 | * which do not represent real hardware may define this to allow their |
| 988 | * userspace components to manage their virtual carrier state. Devices |
| 989 | * that determine carrier state from physical hardware properties (eg |
| 990 | * network cables) or protocol-dependent mechanisms (eg |
| 991 | * USB_CDC_NOTIFY_NETWORK_CONNECTION) should NOT implement this function. |
Jiri Pirko | 66b52b0 | 2013-07-29 18:16:49 +0200 | [diff] [blame] | 992 | * |
| 993 | * int (*ndo_get_phys_port_id)(struct net_device *dev, |
Jiri Pirko | 02637fc | 2014-11-28 14:34:16 +0100 | [diff] [blame] | 994 | * struct netdev_phys_item_id *ppid); |
Jiri Pirko | 66b52b0 | 2013-07-29 18:16:49 +0200 | [diff] [blame] | 995 | * Called to get ID of physical port of this device. If driver does |
| 996 | * not implement this, it is assumed that the hw is not able to have |
| 997 | * multiple net devices on single physical port. |
Joseph Gasparakis | 53cf5275 | 2013-09-04 02:13:38 -0700 | [diff] [blame] | 998 | * |
| 999 | * void (*ndo_add_vxlan_port)(struct net_device *dev, |
Joseph Gasparakis | 35e4237 | 2013-09-13 07:34:13 -0700 | [diff] [blame] | 1000 | * sa_family_t sa_family, __be16 port); |
Joseph Gasparakis | 53cf5275 | 2013-09-04 02:13:38 -0700 | [diff] [blame] | 1001 | * Called by vxlan to notiy a driver about the UDP port and socket |
| 1002 | * address family that vxlan is listnening to. It is called only when |
| 1003 | * a new port starts listening. The operation is protected by the |
| 1004 | * vxlan_net->sock_lock. |
| 1005 | * |
| 1006 | * void (*ndo_del_vxlan_port)(struct net_device *dev, |
Joseph Gasparakis | 35e4237 | 2013-09-13 07:34:13 -0700 | [diff] [blame] | 1007 | * sa_family_t sa_family, __be16 port); |
Joseph Gasparakis | 53cf5275 | 2013-09-04 02:13:38 -0700 | [diff] [blame] | 1008 | * Called by vxlan to notify the driver about a UDP port and socket |
| 1009 | * address family that vxlan is not listening to anymore. The operation |
| 1010 | * is protected by the vxlan_net->sock_lock. |
John Fastabend | a6cc0cf | 2013-11-06 09:54:46 -0800 | [diff] [blame] | 1011 | * |
| 1012 | * void* (*ndo_dfwd_add_station)(struct net_device *pdev, |
| 1013 | * struct net_device *dev) |
| 1014 | * Called by upper layer devices to accelerate switching or other |
| 1015 | * station functionality into hardware. 'pdev is the lowerdev |
| 1016 | * to use for the offload and 'dev' is the net device that will |
| 1017 | * back the offload. Returns a pointer to the private structure |
| 1018 | * the upper layer will maintain. |
| 1019 | * void (*ndo_dfwd_del_station)(struct net_device *pdev, void *priv) |
| 1020 | * Called by upper layer device to delete the station created |
| 1021 | * by 'ndo_dfwd_add_station'. 'pdev' is the net device backing |
| 1022 | * the station and priv is the structure returned by the add |
| 1023 | * operation. |
| 1024 | * netdev_tx_t (*ndo_dfwd_start_xmit)(struct sk_buff *skb, |
| 1025 | * struct net_device *dev, |
| 1026 | * void *priv); |
| 1027 | * Callback to use for xmit over the accelerated station. This |
| 1028 | * is used in place of ndo_start_xmit on accelerated net |
| 1029 | * devices. |
Jesse Gross | 5f35227 | 2014-12-23 22:37:26 -0800 | [diff] [blame] | 1030 | * netdev_features_t (*ndo_features_check) (struct sk_buff *skb, |
| 1031 | * struct net_device *dev |
| 1032 | * netdev_features_t features); |
Tom Herbert | 04ffcb2 | 2014-10-14 15:19:06 -0700 | [diff] [blame] | 1033 | * Called by core transmit path to determine if device is capable of |
Jesse Gross | 5f35227 | 2014-12-23 22:37:26 -0800 | [diff] [blame] | 1034 | * performing offload operations on a given packet. This is to give |
| 1035 | * the device an opportunity to implement any restrictions that cannot |
| 1036 | * be otherwise expressed by feature flags. The check is called with |
| 1037 | * the set of features that the stack has calculated and it returns |
| 1038 | * those the driver believes to be appropriate. |
John Fastabend | 822b3b2 | 2015-03-18 14:57:33 +0200 | [diff] [blame] | 1039 | * int (*ndo_set_tx_maxrate)(struct net_device *dev, |
| 1040 | * int queue_index, u32 maxrate); |
| 1041 | * Called when a user wants to set a max-rate limitation of specific |
| 1042 | * TX queue. |
Nicolas Dichtel | a54acb3 | 2015-04-02 17:07:00 +0200 | [diff] [blame] | 1043 | * int (*ndo_get_iflink)(const struct net_device *dev); |
| 1044 | * Called to get the iflink value of this device. |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 1045 | */ |
| 1046 | struct net_device_ops { |
| 1047 | int (*ndo_init)(struct net_device *dev); |
| 1048 | void (*ndo_uninit)(struct net_device *dev); |
| 1049 | int (*ndo_open)(struct net_device *dev); |
| 1050 | int (*ndo_stop)(struct net_device *dev); |
Stephen Hemminger | dc1f8bf | 2009-08-31 19:50:40 +0000 | [diff] [blame] | 1051 | netdev_tx_t (*ndo_start_xmit) (struct sk_buff *skb, |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 1052 | struct net_device *dev); |
| 1053 | u16 (*ndo_select_queue)(struct net_device *dev, |
Jason Wang | f663dd9 | 2014-01-10 16:18:26 +0800 | [diff] [blame] | 1054 | struct sk_buff *skb, |
Daniel Borkmann | 99932d4 | 2014-02-16 15:55:20 +0100 | [diff] [blame] | 1055 | void *accel_priv, |
| 1056 | select_queue_fallback_t fallback); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 1057 | void (*ndo_change_rx_flags)(struct net_device *dev, |
| 1058 | int flags); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 1059 | void (*ndo_set_rx_mode)(struct net_device *dev); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 1060 | int (*ndo_set_mac_address)(struct net_device *dev, |
| 1061 | void *addr); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 1062 | int (*ndo_validate_addr)(struct net_device *dev); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 1063 | int (*ndo_do_ioctl)(struct net_device *dev, |
| 1064 | struct ifreq *ifr, int cmd); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 1065 | int (*ndo_set_config)(struct net_device *dev, |
| 1066 | struct ifmap *map); |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 1067 | int (*ndo_change_mtu)(struct net_device *dev, |
| 1068 | int new_mtu); |
| 1069 | int (*ndo_neigh_setup)(struct net_device *dev, |
| 1070 | struct neigh_parms *); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 1071 | void (*ndo_tx_timeout) (struct net_device *dev); |
| 1072 | |
Eric Dumazet | 2817273 | 2010-07-07 14:58:56 -0700 | [diff] [blame] | 1073 | struct rtnl_link_stats64* (*ndo_get_stats64)(struct net_device *dev, |
| 1074 | struct rtnl_link_stats64 *storage); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 1075 | struct net_device_stats* (*ndo_get_stats)(struct net_device *dev); |
| 1076 | |
Jiri Pirko | 8e58613 | 2011-12-08 19:52:37 -0500 | [diff] [blame] | 1077 | int (*ndo_vlan_rx_add_vid)(struct net_device *dev, |
Patrick McHardy | 80d5c36 | 2013-04-19 02:04:28 +0000 | [diff] [blame] | 1078 | __be16 proto, u16 vid); |
Jiri Pirko | 8e58613 | 2011-12-08 19:52:37 -0500 | [diff] [blame] | 1079 | int (*ndo_vlan_rx_kill_vid)(struct net_device *dev, |
Patrick McHardy | 80d5c36 | 2013-04-19 02:04:28 +0000 | [diff] [blame] | 1080 | __be16 proto, u16 vid); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 1081 | #ifdef CONFIG_NET_POLL_CONTROLLER |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 1082 | void (*ndo_poll_controller)(struct net_device *dev); |
Herbert Xu | 4247e16 | 2010-06-10 16:12:47 +0000 | [diff] [blame] | 1083 | int (*ndo_netpoll_setup)(struct net_device *dev, |
Eric W. Biederman | a8779ec | 2014-03-27 15:36:38 -0700 | [diff] [blame] | 1084 | struct netpoll_info *info); |
WANG Cong | 0e34e93 | 2010-05-06 00:47:21 -0700 | [diff] [blame] | 1085 | void (*ndo_netpoll_cleanup)(struct net_device *dev); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 1086 | #endif |
Cong Wang | e0d1095 | 2013-08-01 11:10:25 +0800 | [diff] [blame] | 1087 | #ifdef CONFIG_NET_RX_BUSY_POLL |
Eliezer Tamir | 8b80cda | 2013-07-10 17:13:26 +0300 | [diff] [blame] | 1088 | int (*ndo_busy_poll)(struct napi_struct *dev); |
Eliezer Tamir | 0602129 | 2013-06-10 11:39:50 +0300 | [diff] [blame] | 1089 | #endif |
Williams, Mitch A | 95c26df | 2010-02-10 01:43:46 +0000 | [diff] [blame] | 1090 | int (*ndo_set_vf_mac)(struct net_device *dev, |
| 1091 | int queue, u8 *mac); |
| 1092 | int (*ndo_set_vf_vlan)(struct net_device *dev, |
| 1093 | int queue, u16 vlan, u8 qos); |
Sucheta Chakraborty | ed61668 | 2014-05-22 09:59:05 -0400 | [diff] [blame] | 1094 | int (*ndo_set_vf_rate)(struct net_device *dev, |
| 1095 | int vf, int min_tx_rate, |
| 1096 | int max_tx_rate); |
Greg Rose | 5f8444a | 2011-10-08 03:05:24 +0000 | [diff] [blame] | 1097 | int (*ndo_set_vf_spoofchk)(struct net_device *dev, |
| 1098 | int vf, bool setting); |
Williams, Mitch A | 95c26df | 2010-02-10 01:43:46 +0000 | [diff] [blame] | 1099 | int (*ndo_get_vf_config)(struct net_device *dev, |
| 1100 | int vf, |
| 1101 | struct ifla_vf_info *ivf); |
Rony Efraim | 1d8faf4 | 2013-06-13 13:19:10 +0300 | [diff] [blame] | 1102 | int (*ndo_set_vf_link_state)(struct net_device *dev, |
| 1103 | int vf, int link_state); |
Scott Feldman | 57b6108 | 2010-05-17 22:49:55 -0700 | [diff] [blame] | 1104 | int (*ndo_set_vf_port)(struct net_device *dev, |
| 1105 | int vf, |
| 1106 | struct nlattr *port[]); |
| 1107 | int (*ndo_get_vf_port)(struct net_device *dev, |
| 1108 | int vf, struct sk_buff *skb); |
Vlad Zolotarov | 01a3d79 | 2015-03-30 21:35:23 +0300 | [diff] [blame] | 1109 | int (*ndo_set_vf_rss_query_en)( |
| 1110 | struct net_device *dev, |
| 1111 | int vf, bool setting); |
John Fastabend | 4f57c08 | 2011-01-17 08:06:04 +0000 | [diff] [blame] | 1112 | int (*ndo_setup_tc)(struct net_device *dev, u8 tc); |
Ben Hutchings | d11ead7 | 2011-11-25 14:40:26 +0000 | [diff] [blame] | 1113 | #if IS_ENABLED(CONFIG_FCOE) |
Yi Zou | cb45439 | 2009-08-31 12:31:36 +0000 | [diff] [blame] | 1114 | int (*ndo_fcoe_enable)(struct net_device *dev); |
| 1115 | int (*ndo_fcoe_disable)(struct net_device *dev); |
Yi Zou | 4d288d5 | 2009-02-27 14:06:59 -0800 | [diff] [blame] | 1116 | int (*ndo_fcoe_ddp_setup)(struct net_device *dev, |
| 1117 | u16 xid, |
| 1118 | struct scatterlist *sgl, |
| 1119 | unsigned int sgc); |
| 1120 | int (*ndo_fcoe_ddp_done)(struct net_device *dev, |
| 1121 | u16 xid); |
Yi Zou | 6247e08 | 2011-02-01 07:22:06 +0000 | [diff] [blame] | 1122 | int (*ndo_fcoe_ddp_target)(struct net_device *dev, |
| 1123 | u16 xid, |
| 1124 | struct scatterlist *sgl, |
| 1125 | unsigned int sgc); |
Neerav Parikh | 68bad94 | 2012-01-04 20:23:39 +0000 | [diff] [blame] | 1126 | int (*ndo_fcoe_get_hbainfo)(struct net_device *dev, |
| 1127 | struct netdev_fcoe_hbainfo *hbainfo); |
Bhanu Prakash Gollapudi | 3c9c36bc | 2011-08-26 09:45:41 +0000 | [diff] [blame] | 1128 | #endif |
| 1129 | |
Ben Hutchings | d11ead7 | 2011-11-25 14:40:26 +0000 | [diff] [blame] | 1130 | #if IS_ENABLED(CONFIG_LIBFCOE) |
Yi Zou | df5c794 | 2009-10-28 18:24:35 +0000 | [diff] [blame] | 1131 | #define NETDEV_FCOE_WWNN 0 |
| 1132 | #define NETDEV_FCOE_WWPN 1 |
| 1133 | int (*ndo_fcoe_get_wwn)(struct net_device *dev, |
| 1134 | u64 *wwn, int type); |
Yi Zou | 4d288d5 | 2009-02-27 14:06:59 -0800 | [diff] [blame] | 1135 | #endif |
Bhanu Prakash Gollapudi | 3c9c36bc | 2011-08-26 09:45:41 +0000 | [diff] [blame] | 1136 | |
Ben Hutchings | c445477 | 2011-01-19 11:03:53 +0000 | [diff] [blame] | 1137 | #ifdef CONFIG_RFS_ACCEL |
| 1138 | int (*ndo_rx_flow_steer)(struct net_device *dev, |
| 1139 | const struct sk_buff *skb, |
| 1140 | u16 rxq_index, |
| 1141 | u32 flow_id); |
| 1142 | #endif |
Jiri Pirko | fbaec0e | 2011-02-13 10:15:37 +0000 | [diff] [blame] | 1143 | int (*ndo_add_slave)(struct net_device *dev, |
| 1144 | struct net_device *slave_dev); |
| 1145 | int (*ndo_del_slave)(struct net_device *dev, |
| 1146 | struct net_device *slave_dev); |
Michał Mirosław | c8f44af | 2011-11-15 15:29:55 +0000 | [diff] [blame] | 1147 | netdev_features_t (*ndo_fix_features)(struct net_device *dev, |
| 1148 | netdev_features_t features); |
Michał Mirosław | 5455c69 | 2011-02-15 16:59:17 +0000 | [diff] [blame] | 1149 | int (*ndo_set_features)(struct net_device *dev, |
Michał Mirosław | c8f44af | 2011-11-15 15:29:55 +0000 | [diff] [blame] | 1150 | netdev_features_t features); |
David Miller | da6a8fa | 2011-07-25 00:01:38 +0000 | [diff] [blame] | 1151 | int (*ndo_neigh_construct)(struct neighbour *n); |
David S. Miller | 447f219 | 2011-12-19 15:04:41 -0500 | [diff] [blame] | 1152 | void (*ndo_neigh_destroy)(struct neighbour *n); |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 1153 | |
| 1154 | int (*ndo_fdb_add)(struct ndmsg *ndm, |
stephen hemminger | edc7d57 | 2012-10-01 12:32:33 +0000 | [diff] [blame] | 1155 | struct nlattr *tb[], |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 1156 | struct net_device *dev, |
stephen hemminger | 6b6e272 | 2012-09-17 10:03:26 +0000 | [diff] [blame] | 1157 | const unsigned char *addr, |
Jiri Pirko | f6f6424 | 2014-11-28 14:34:15 +0100 | [diff] [blame] | 1158 | u16 vid, |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 1159 | u16 flags); |
| 1160 | int (*ndo_fdb_del)(struct ndmsg *ndm, |
Vlad Yasevich | 1690be6 | 2013-02-13 12:00:18 +0000 | [diff] [blame] | 1161 | struct nlattr *tb[], |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 1162 | struct net_device *dev, |
Jiri Pirko | f6f6424 | 2014-11-28 14:34:15 +0100 | [diff] [blame] | 1163 | const unsigned char *addr, |
| 1164 | u16 vid); |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 1165 | int (*ndo_fdb_dump)(struct sk_buff *skb, |
| 1166 | struct netlink_callback *cb, |
| 1167 | struct net_device *dev, |
Jamal Hadi Salim | 5d5eacb | 2014-07-10 07:01:58 -0400 | [diff] [blame] | 1168 | struct net_device *filter_dev, |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 1169 | int idx); |
John Fastabend | e5a55a8 | 2012-10-24 08:12:57 +0000 | [diff] [blame] | 1170 | |
| 1171 | int (*ndo_bridge_setlink)(struct net_device *dev, |
Roopa Prabhu | add511b | 2015-01-29 22:40:12 -0800 | [diff] [blame] | 1172 | struct nlmsghdr *nlh, |
| 1173 | u16 flags); |
John Fastabend | e5a55a8 | 2012-10-24 08:12:57 +0000 | [diff] [blame] | 1174 | int (*ndo_bridge_getlink)(struct sk_buff *skb, |
| 1175 | u32 pid, u32 seq, |
Vlad Yasevich | 6cbdcee | 2013-02-13 12:00:13 +0000 | [diff] [blame] | 1176 | struct net_device *dev, |
Nicolas Dichtel | 46c264d | 2015-04-28 18:33:49 +0200 | [diff] [blame] | 1177 | u32 filter_mask, |
| 1178 | int nlflags); |
Vlad Yasevich | 407af32 | 2013-02-13 12:00:12 +0000 | [diff] [blame] | 1179 | int (*ndo_bridge_dellink)(struct net_device *dev, |
Roopa Prabhu | add511b | 2015-01-29 22:40:12 -0800 | [diff] [blame] | 1180 | struct nlmsghdr *nlh, |
| 1181 | u16 flags); |
Jiri Pirko | 4bf84c3 | 2012-12-27 23:49:37 +0000 | [diff] [blame] | 1182 | int (*ndo_change_carrier)(struct net_device *dev, |
| 1183 | bool new_carrier); |
Jiri Pirko | 66b52b0 | 2013-07-29 18:16:49 +0200 | [diff] [blame] | 1184 | int (*ndo_get_phys_port_id)(struct net_device *dev, |
Jiri Pirko | 02637fc | 2014-11-28 14:34:16 +0100 | [diff] [blame] | 1185 | struct netdev_phys_item_id *ppid); |
David Ahern | db24a90 | 2015-03-17 20:23:15 -0600 | [diff] [blame] | 1186 | int (*ndo_get_phys_port_name)(struct net_device *dev, |
| 1187 | char *name, size_t len); |
Joseph Gasparakis | 53cf5275 | 2013-09-04 02:13:38 -0700 | [diff] [blame] | 1188 | void (*ndo_add_vxlan_port)(struct net_device *dev, |
| 1189 | sa_family_t sa_family, |
Joseph Gasparakis | 35e4237 | 2013-09-13 07:34:13 -0700 | [diff] [blame] | 1190 | __be16 port); |
Joseph Gasparakis | 53cf5275 | 2013-09-04 02:13:38 -0700 | [diff] [blame] | 1191 | void (*ndo_del_vxlan_port)(struct net_device *dev, |
| 1192 | sa_family_t sa_family, |
Joseph Gasparakis | 35e4237 | 2013-09-13 07:34:13 -0700 | [diff] [blame] | 1193 | __be16 port); |
John Fastabend | a6cc0cf | 2013-11-06 09:54:46 -0800 | [diff] [blame] | 1194 | |
| 1195 | void* (*ndo_dfwd_add_station)(struct net_device *pdev, |
| 1196 | struct net_device *dev); |
| 1197 | void (*ndo_dfwd_del_station)(struct net_device *pdev, |
| 1198 | void *priv); |
| 1199 | |
| 1200 | netdev_tx_t (*ndo_dfwd_start_xmit) (struct sk_buff *skb, |
| 1201 | struct net_device *dev, |
| 1202 | void *priv); |
Vlad Yasevich | 25175ba | 2014-05-16 17:04:54 -0400 | [diff] [blame] | 1203 | int (*ndo_get_lock_subclass)(struct net_device *dev); |
Jesse Gross | 5f35227 | 2014-12-23 22:37:26 -0800 | [diff] [blame] | 1204 | netdev_features_t (*ndo_features_check) (struct sk_buff *skb, |
| 1205 | struct net_device *dev, |
| 1206 | netdev_features_t features); |
John Fastabend | 822b3b2 | 2015-03-18 14:57:33 +0200 | [diff] [blame] | 1207 | int (*ndo_set_tx_maxrate)(struct net_device *dev, |
| 1208 | int queue_index, |
| 1209 | u32 maxrate); |
Nicolas Dichtel | a54acb3 | 2015-04-02 17:07:00 +0200 | [diff] [blame] | 1210 | int (*ndo_get_iflink)(const struct net_device *dev); |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 1211 | }; |
| 1212 | |
Luis R. Rodriguez | 7aa9804 | 2014-02-25 17:15:13 -0800 | [diff] [blame] | 1213 | /** |
| 1214 | * enum net_device_priv_flags - &struct net_device priv_flags |
| 1215 | * |
| 1216 | * These are the &struct net_device, they are only set internally |
| 1217 | * by drivers and used in the kernel. These flags are invisible to |
| 1218 | * userspace, this means that the order of these flags can change |
| 1219 | * during any kernel release. |
| 1220 | * |
| 1221 | * You should have a pretty good reason to be extending these flags. |
| 1222 | * |
| 1223 | * @IFF_802_1Q_VLAN: 802.1Q VLAN device |
| 1224 | * @IFF_EBRIDGE: Ethernet bridging device |
| 1225 | * @IFF_SLAVE_INACTIVE: bonding slave not the curr. active |
| 1226 | * @IFF_MASTER_8023AD: bonding master, 802.3ad |
| 1227 | * @IFF_MASTER_ALB: bonding master, balance-alb |
| 1228 | * @IFF_BONDING: bonding master or slave |
| 1229 | * @IFF_SLAVE_NEEDARP: need ARPs for validation |
| 1230 | * @IFF_ISATAP: ISATAP interface (RFC4214) |
| 1231 | * @IFF_MASTER_ARPMON: bonding master, ARP mon in use |
| 1232 | * @IFF_WAN_HDLC: WAN HDLC device |
| 1233 | * @IFF_XMIT_DST_RELEASE: dev_hard_start_xmit() is allowed to |
| 1234 | * release skb->dst |
| 1235 | * @IFF_DONT_BRIDGE: disallow bridging this ether dev |
| 1236 | * @IFF_DISABLE_NETPOLL: disable netpoll at run-time |
| 1237 | * @IFF_MACVLAN_PORT: device used as macvlan port |
| 1238 | * @IFF_BRIDGE_PORT: device used as bridge port |
| 1239 | * @IFF_OVS_DATAPATH: device used as Open vSwitch datapath port |
| 1240 | * @IFF_TX_SKB_SHARING: The interface supports sharing skbs on transmit |
| 1241 | * @IFF_UNICAST_FLT: Supports unicast filtering |
| 1242 | * @IFF_TEAM_PORT: device used as team port |
| 1243 | * @IFF_SUPP_NOFCS: device supports sending custom FCS |
| 1244 | * @IFF_LIVE_ADDR_CHANGE: device supports hardware address |
| 1245 | * change when it's running |
| 1246 | * @IFF_MACVLAN: Macvlan device |
| 1247 | */ |
| 1248 | enum netdev_priv_flags { |
| 1249 | IFF_802_1Q_VLAN = 1<<0, |
| 1250 | IFF_EBRIDGE = 1<<1, |
| 1251 | IFF_SLAVE_INACTIVE = 1<<2, |
| 1252 | IFF_MASTER_8023AD = 1<<3, |
| 1253 | IFF_MASTER_ALB = 1<<4, |
| 1254 | IFF_BONDING = 1<<5, |
| 1255 | IFF_SLAVE_NEEDARP = 1<<6, |
| 1256 | IFF_ISATAP = 1<<7, |
| 1257 | IFF_MASTER_ARPMON = 1<<8, |
| 1258 | IFF_WAN_HDLC = 1<<9, |
| 1259 | IFF_XMIT_DST_RELEASE = 1<<10, |
| 1260 | IFF_DONT_BRIDGE = 1<<11, |
| 1261 | IFF_DISABLE_NETPOLL = 1<<12, |
| 1262 | IFF_MACVLAN_PORT = 1<<13, |
| 1263 | IFF_BRIDGE_PORT = 1<<14, |
| 1264 | IFF_OVS_DATAPATH = 1<<15, |
| 1265 | IFF_TX_SKB_SHARING = 1<<16, |
| 1266 | IFF_UNICAST_FLT = 1<<17, |
| 1267 | IFF_TEAM_PORT = 1<<18, |
| 1268 | IFF_SUPP_NOFCS = 1<<19, |
| 1269 | IFF_LIVE_ADDR_CHANGE = 1<<20, |
| 1270 | IFF_MACVLAN = 1<<21, |
Eric Dumazet | 0287587 | 2014-10-05 18:38:35 -0700 | [diff] [blame] | 1271 | IFF_XMIT_DST_RELEASE_PERM = 1<<22, |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 1272 | IFF_IPVLAN_MASTER = 1<<23, |
| 1273 | IFF_IPVLAN_SLAVE = 1<<24, |
Luis R. Rodriguez | 7aa9804 | 2014-02-25 17:15:13 -0800 | [diff] [blame] | 1274 | }; |
| 1275 | |
| 1276 | #define IFF_802_1Q_VLAN IFF_802_1Q_VLAN |
| 1277 | #define IFF_EBRIDGE IFF_EBRIDGE |
| 1278 | #define IFF_SLAVE_INACTIVE IFF_SLAVE_INACTIVE |
| 1279 | #define IFF_MASTER_8023AD IFF_MASTER_8023AD |
| 1280 | #define IFF_MASTER_ALB IFF_MASTER_ALB |
| 1281 | #define IFF_BONDING IFF_BONDING |
| 1282 | #define IFF_SLAVE_NEEDARP IFF_SLAVE_NEEDARP |
| 1283 | #define IFF_ISATAP IFF_ISATAP |
| 1284 | #define IFF_MASTER_ARPMON IFF_MASTER_ARPMON |
| 1285 | #define IFF_WAN_HDLC IFF_WAN_HDLC |
| 1286 | #define IFF_XMIT_DST_RELEASE IFF_XMIT_DST_RELEASE |
| 1287 | #define IFF_DONT_BRIDGE IFF_DONT_BRIDGE |
| 1288 | #define IFF_DISABLE_NETPOLL IFF_DISABLE_NETPOLL |
| 1289 | #define IFF_MACVLAN_PORT IFF_MACVLAN_PORT |
| 1290 | #define IFF_BRIDGE_PORT IFF_BRIDGE_PORT |
| 1291 | #define IFF_OVS_DATAPATH IFF_OVS_DATAPATH |
| 1292 | #define IFF_TX_SKB_SHARING IFF_TX_SKB_SHARING |
| 1293 | #define IFF_UNICAST_FLT IFF_UNICAST_FLT |
| 1294 | #define IFF_TEAM_PORT IFF_TEAM_PORT |
| 1295 | #define IFF_SUPP_NOFCS IFF_SUPP_NOFCS |
| 1296 | #define IFF_LIVE_ADDR_CHANGE IFF_LIVE_ADDR_CHANGE |
| 1297 | #define IFF_MACVLAN IFF_MACVLAN |
Eric Dumazet | 0287587 | 2014-10-05 18:38:35 -0700 | [diff] [blame] | 1298 | #define IFF_XMIT_DST_RELEASE_PERM IFF_XMIT_DST_RELEASE_PERM |
Mahesh Bandewar | 2ad7bf3 | 2014-11-23 23:07:46 -0800 | [diff] [blame] | 1299 | #define IFF_IPVLAN_MASTER IFF_IPVLAN_MASTER |
| 1300 | #define IFF_IPVLAN_SLAVE IFF_IPVLAN_SLAVE |
Luis R. Rodriguez | 7aa9804 | 2014-02-25 17:15:13 -0800 | [diff] [blame] | 1301 | |
Karoly Kemeny | 536721b | 2014-07-30 20:27:36 +0200 | [diff] [blame] | 1302 | /** |
| 1303 | * struct net_device - The DEVICE structure. |
| 1304 | * Actually, this whole structure is a big mistake. It mixes I/O |
| 1305 | * data with strictly "high-level" data, and it has to know about |
| 1306 | * almost every data structure used in the INET module. |
| 1307 | * |
| 1308 | * @name: This is the first field of the "visible" part of this structure |
| 1309 | * (i.e. as seen by users in the "Space.c" file). It is the name |
| 1310 | * of the interface. |
| 1311 | * |
| 1312 | * @name_hlist: Device name hash chain, please keep it close to name[] |
| 1313 | * @ifalias: SNMP alias |
| 1314 | * @mem_end: Shared memory end |
| 1315 | * @mem_start: Shared memory start |
| 1316 | * @base_addr: Device I/O address |
| 1317 | * @irq: Device IRQ number |
| 1318 | * |
Thomas Graf | 14ffbbb | 2015-04-10 15:52:38 +0200 | [diff] [blame] | 1319 | * @carrier_changes: Stats to monitor carrier on<->off transitions |
| 1320 | * |
Karoly Kemeny | 536721b | 2014-07-30 20:27:36 +0200 | [diff] [blame] | 1321 | * @state: Generic network queuing layer state, see netdev_state_t |
| 1322 | * @dev_list: The global list of network devices |
| 1323 | * @napi_list: List entry, that is used for polling napi devices |
| 1324 | * @unreg_list: List entry, that is used, when we are unregistering the |
| 1325 | * device, see the function unregister_netdev |
| 1326 | * @close_list: List entry, that is used, when we are closing the device |
| 1327 | * |
| 1328 | * @adj_list: Directly linked devices, like slaves for bonding |
| 1329 | * @all_adj_list: All linked devices, *including* neighbours |
| 1330 | * @features: Currently active device features |
| 1331 | * @hw_features: User-changeable features |
| 1332 | * |
| 1333 | * @wanted_features: User-requested features |
| 1334 | * @vlan_features: Mask of features inheritable by VLAN devices |
| 1335 | * |
| 1336 | * @hw_enc_features: Mask of features inherited by encapsulating devices |
| 1337 | * This field indicates what encapsulation |
| 1338 | * offloads the hardware is capable of doing, |
| 1339 | * and drivers will need to set them appropriately. |
| 1340 | * |
| 1341 | * @mpls_features: Mask of features inheritable by MPLS |
| 1342 | * |
| 1343 | * @ifindex: interface index |
Nicolas Dichtel | 388069d | 2015-04-07 12:10:16 +0200 | [diff] [blame] | 1344 | * @group: The group, that the device belongs to |
Karoly Kemeny | 536721b | 2014-07-30 20:27:36 +0200 | [diff] [blame] | 1345 | * |
| 1346 | * @stats: Statistics struct, which was left as a legacy, use |
| 1347 | * rtnl_link_stats64 instead |
| 1348 | * |
| 1349 | * @rx_dropped: Dropped packets by core network, |
| 1350 | * do not use this in drivers |
| 1351 | * @tx_dropped: Dropped packets by core network, |
| 1352 | * do not use this in drivers |
| 1353 | * |
Karoly Kemeny | 536721b | 2014-07-30 20:27:36 +0200 | [diff] [blame] | 1354 | * @wireless_handlers: List of functions to handle Wireless Extensions, |
| 1355 | * instead of ioctl, |
| 1356 | * see <net/iw_handler.h> for details. |
| 1357 | * @wireless_data: Instance data managed by the core of wireless extensions |
| 1358 | * |
| 1359 | * @netdev_ops: Includes several pointers to callbacks, |
| 1360 | * if one wants to override the ndo_*() functions |
| 1361 | * @ethtool_ops: Management operations |
Eric W. Biederman | d476059 | 2015-03-02 00:11:09 -0600 | [diff] [blame] | 1362 | * @header_ops: Includes callbacks for creating,parsing,caching,etc |
Karoly Kemeny | 536721b | 2014-07-30 20:27:36 +0200 | [diff] [blame] | 1363 | * of Layer 2 headers. |
| 1364 | * |
| 1365 | * @flags: Interface flags (a la BSD) |
| 1366 | * @priv_flags: Like 'flags' but invisible to userspace, |
| 1367 | * see if.h for the definitions |
| 1368 | * @gflags: Global flags ( kept as legacy ) |
| 1369 | * @padded: How much padding added by alloc_netdev() |
| 1370 | * @operstate: RFC2863 operstate |
| 1371 | * @link_mode: Mapping policy to operstate |
| 1372 | * @if_port: Selectable AUI, TP, ... |
| 1373 | * @dma: DMA channel |
| 1374 | * @mtu: Interface MTU value |
| 1375 | * @type: Interface hardware type |
| 1376 | * @hard_header_len: Hardware header length |
| 1377 | * |
| 1378 | * @needed_headroom: Extra headroom the hardware may need, but not in all |
| 1379 | * cases can this be guaranteed |
| 1380 | * @needed_tailroom: Extra tailroom the hardware may need, but not in all |
| 1381 | * cases can this be guaranteed. Some cases also use |
| 1382 | * LL_MAX_HEADER instead to allocate the skb |
| 1383 | * |
| 1384 | * interface address info: |
| 1385 | * |
| 1386 | * @perm_addr: Permanent hw address |
| 1387 | * @addr_assign_type: Hw address assignment type |
| 1388 | * @addr_len: Hardware address length |
| 1389 | * @neigh_priv_len; Used in neigh_alloc(), |
| 1390 | * initialized only in atm/clip.c |
| 1391 | * @dev_id: Used to differentiate devices that share |
| 1392 | * the same link layer address |
| 1393 | * @dev_port: Used to differentiate devices that share |
| 1394 | * the same function |
| 1395 | * @addr_list_lock: XXX: need comments on this one |
Karoly Kemeny | 536721b | 2014-07-30 20:27:36 +0200 | [diff] [blame] | 1396 | * @uc_promisc: Counter, that indicates, that promiscuous mode |
| 1397 | * has been enabled due to the need to listen to |
| 1398 | * additional unicast addresses in a device that |
| 1399 | * does not implement ndo_set_rx_mode() |
Thomas Graf | 14ffbbb | 2015-04-10 15:52:38 +0200 | [diff] [blame] | 1400 | * @uc: unicast mac addresses |
| 1401 | * @mc: multicast mac addresses |
| 1402 | * @dev_addrs: list of device hw addresses |
| 1403 | * @queues_kset: Group of all Kobjects in the Tx and RX queues |
Karoly Kemeny | 536721b | 2014-07-30 20:27:36 +0200 | [diff] [blame] | 1404 | * @promiscuity: Number of times, the NIC is told to work in |
| 1405 | * Promiscuous mode, if it becomes 0 the NIC will |
| 1406 | * exit from working in Promiscuous mode |
| 1407 | * @allmulti: Counter, enables or disables allmulticast mode |
| 1408 | * |
| 1409 | * @vlan_info: VLAN info |
| 1410 | * @dsa_ptr: dsa specific data |
| 1411 | * @tipc_ptr: TIPC specific data |
| 1412 | * @atalk_ptr: AppleTalk link |
| 1413 | * @ip_ptr: IPv4 specific data |
| 1414 | * @dn_ptr: DECnet specific data |
| 1415 | * @ip6_ptr: IPv6 specific data |
| 1416 | * @ax25_ptr: AX.25 specific data |
| 1417 | * @ieee80211_ptr: IEEE 802.11 specific data, assign before registering |
| 1418 | * |
| 1419 | * @last_rx: Time of last Rx |
| 1420 | * @dev_addr: Hw address (before bcast, |
| 1421 | * because most packets are unicast) |
| 1422 | * |
| 1423 | * @_rx: Array of RX queues |
| 1424 | * @num_rx_queues: Number of RX queues |
| 1425 | * allocated at register_netdev() time |
| 1426 | * @real_num_rx_queues: Number of RX queues currently active in device |
| 1427 | * |
| 1428 | * @rx_handler: handler for received packets |
| 1429 | * @rx_handler_data: XXX: need comments on this one |
| 1430 | * @ingress_queue: XXX: need comments on this one |
| 1431 | * @broadcast: hw bcast address |
| 1432 | * |
Thomas Graf | 14ffbbb | 2015-04-10 15:52:38 +0200 | [diff] [blame] | 1433 | * @rx_cpu_rmap: CPU reverse-mapping for RX completion interrupts, |
| 1434 | * indexed by RX queue number. Assigned by driver. |
| 1435 | * This must only be set if the ndo_rx_flow_steer |
| 1436 | * operation is defined |
| 1437 | * @index_hlist: Device index hash chain |
| 1438 | * |
Karoly Kemeny | 536721b | 2014-07-30 20:27:36 +0200 | [diff] [blame] | 1439 | * @_tx: Array of TX queues |
| 1440 | * @num_tx_queues: Number of TX queues allocated at alloc_netdev_mq() time |
| 1441 | * @real_num_tx_queues: Number of TX queues currently active in device |
| 1442 | * @qdisc: Root qdisc from userspace point of view |
| 1443 | * @tx_queue_len: Max frames per queue allowed |
| 1444 | * @tx_global_lock: XXX: need comments on this one |
| 1445 | * |
| 1446 | * @xps_maps: XXX: need comments on this one |
| 1447 | * |
Karoly Kemeny | 536721b | 2014-07-30 20:27:36 +0200 | [diff] [blame] | 1448 | * @trans_start: Time (in jiffies) of last Tx |
| 1449 | * @watchdog_timeo: Represents the timeout that is used by |
| 1450 | * the watchdog ( see dev_watchdog() ) |
| 1451 | * @watchdog_timer: List of timers |
| 1452 | * |
| 1453 | * @pcpu_refcnt: Number of references to this device |
| 1454 | * @todo_list: Delayed register/unregister |
Karoly Kemeny | 536721b | 2014-07-30 20:27:36 +0200 | [diff] [blame] | 1455 | * @link_watch_list: XXX: need comments on this one |
| 1456 | * |
| 1457 | * @reg_state: Register/unregister state machine |
| 1458 | * @dismantle: Device is going to be freed |
| 1459 | * @rtnl_link_state: This enum represents the phases of creating |
| 1460 | * a new link |
| 1461 | * |
| 1462 | * @destructor: Called from unregister, |
| 1463 | * can be used to call free_netdev |
| 1464 | * @npinfo: XXX: need comments on this one |
| 1465 | * @nd_net: Network namespace this network device is inside |
| 1466 | * |
| 1467 | * @ml_priv: Mid-layer private |
| 1468 | * @lstats: Loopback statistics |
| 1469 | * @tstats: Tunnel statistics |
| 1470 | * @dstats: Dummy statistics |
| 1471 | * @vstats: Virtual ethernet statistics |
| 1472 | * |
| 1473 | * @garp_port: GARP |
| 1474 | * @mrp_port: MRP |
| 1475 | * |
| 1476 | * @dev: Class/net/name entry |
| 1477 | * @sysfs_groups: Space for optional device, statistics and wireless |
| 1478 | * sysfs groups |
| 1479 | * |
| 1480 | * @sysfs_rx_queue_group: Space for optional per-rx queue attributes |
| 1481 | * @rtnl_link_ops: Rtnl_link_ops |
| 1482 | * |
| 1483 | * @gso_max_size: Maximum size of generic segmentation offload |
| 1484 | * @gso_max_segs: Maximum number of segments that can be passed to the |
| 1485 | * NIC for GSO |
Eric Dumazet | fcbeb97 | 2014-10-05 10:11:27 -0700 | [diff] [blame] | 1486 | * @gso_min_segs: Minimum number of segments that can be passed to the |
| 1487 | * NIC for GSO |
Karoly Kemeny | 536721b | 2014-07-30 20:27:36 +0200 | [diff] [blame] | 1488 | * |
| 1489 | * @dcbnl_ops: Data Center Bridging netlink ops |
| 1490 | * @num_tc: Number of traffic classes in the net device |
| 1491 | * @tc_to_txq: XXX: need comments on this one |
| 1492 | * @prio_tc_map XXX: need comments on this one |
| 1493 | * |
| 1494 | * @fcoe_ddp_xid: Max exchange id for FCoE LRO by ddp |
| 1495 | * |
| 1496 | * @priomap: XXX: need comments on this one |
| 1497 | * @phydev: Physical device may attach itself |
| 1498 | * for hardware timestamping |
| 1499 | * |
| 1500 | * @qdisc_tx_busylock: XXX: need comments on this one |
| 1501 | * |
Karoly Kemeny | 536721b | 2014-07-30 20:27:36 +0200 | [diff] [blame] | 1502 | * @pm_qos_req: Power Management QoS object |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1503 | * |
| 1504 | * FIXME: cleanup struct net_device such that network protocol info |
| 1505 | * moves out. |
| 1506 | */ |
| 1507 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 1508 | struct net_device { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1509 | char name[IFNAMSIZ]; |
Eric Dumazet | 9356b8f | 2005-09-27 15:23:16 -0700 | [diff] [blame] | 1510 | struct hlist_node name_hlist; |
Stephen Hemminger | 0b815a1 | 2008-09-22 21:28:11 -0700 | [diff] [blame] | 1511 | char *ifalias; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1512 | /* |
| 1513 | * I/O specific fields |
| 1514 | * FIXME: Merge these and struct ifmap into one |
| 1515 | */ |
Karoly Kemeny | 536721b | 2014-07-30 20:27:36 +0200 | [diff] [blame] | 1516 | unsigned long mem_end; |
| 1517 | unsigned long mem_start; |
| 1518 | unsigned long base_addr; |
| 1519 | int irq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1520 | |
Thomas Graf | 14ffbbb | 2015-04-10 15:52:38 +0200 | [diff] [blame] | 1521 | atomic_t carrier_changes; |
| 1522 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1523 | /* |
Karoly Kemeny | 536721b | 2014-07-30 20:27:36 +0200 | [diff] [blame] | 1524 | * Some hardware also needs these fields (state,dev_list, |
| 1525 | * napi_list,unreg_list,close_list) but they are not |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1526 | * part of the usual set specified in Space.c. |
| 1527 | */ |
| 1528 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1529 | unsigned long state; |
| 1530 | |
Pavel Emelianov | 7562f87 | 2007-05-03 15:13:45 -0700 | [diff] [blame] | 1531 | struct list_head dev_list; |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1532 | struct list_head napi_list; |
Eric Dumazet | 44a0873 | 2009-10-27 07:03:04 +0000 | [diff] [blame] | 1533 | struct list_head unreg_list; |
Eric W. Biederman | 5cde282 | 2013-10-05 19:26:05 -0700 | [diff] [blame] | 1534 | struct list_head close_list; |
Salam Noureddine | 7866a62 | 2015-01-27 11:35:48 -0800 | [diff] [blame] | 1535 | struct list_head ptype_all; |
| 1536 | struct list_head ptype_specific; |
Veaceslav Falico | 2f268f1 | 2013-09-25 09:20:07 +0200 | [diff] [blame] | 1537 | |
Veaceslav Falico | 2f268f1 | 2013-09-25 09:20:07 +0200 | [diff] [blame] | 1538 | struct { |
| 1539 | struct list_head upper; |
| 1540 | struct list_head lower; |
| 1541 | } adj_list; |
| 1542 | |
Veaceslav Falico | 2f268f1 | 2013-09-25 09:20:07 +0200 | [diff] [blame] | 1543 | struct { |
| 1544 | struct list_head upper; |
| 1545 | struct list_head lower; |
| 1546 | } all_adj_list; |
Eric Dumazet | 4c3d5e7 | 2013-03-30 06:31:03 +0000 | [diff] [blame] | 1547 | |
Michał Mirosław | c8f44af | 2011-11-15 15:29:55 +0000 | [diff] [blame] | 1548 | netdev_features_t features; |
Michał Mirosław | c8f44af | 2011-11-15 15:29:55 +0000 | [diff] [blame] | 1549 | netdev_features_t hw_features; |
Michał Mirosław | c8f44af | 2011-11-15 15:29:55 +0000 | [diff] [blame] | 1550 | netdev_features_t wanted_features; |
Michał Mirosław | c8f44af | 2011-11-15 15:29:55 +0000 | [diff] [blame] | 1551 | netdev_features_t vlan_features; |
Joseph Gasparakis | 6a674e9 | 2012-12-07 14:14:14 +0000 | [diff] [blame] | 1552 | netdev_features_t hw_enc_features; |
Simon Horman | 0d89d20 | 2013-05-23 21:02:52 +0000 | [diff] [blame] | 1553 | netdev_features_t mpls_features; |
Michał Mirosław | 04ed3e7 | 2011-01-24 15:32:47 -0800 | [diff] [blame] | 1554 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1555 | int ifindex; |
Nicolas Dichtel | 7a66bbc | 2015-04-02 17:07:09 +0200 | [diff] [blame] | 1556 | int group; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1557 | |
Rusty Russell | c45d286 | 2007-03-28 14:29:08 -0700 | [diff] [blame] | 1558 | struct net_device_stats stats; |
Eric Dumazet | 015f068 | 2014-03-27 08:45:56 -0700 | [diff] [blame] | 1559 | |
Eric Dumazet | 015f068 | 2014-03-27 08:45:56 -0700 | [diff] [blame] | 1560 | atomic_long_t rx_dropped; |
| 1561 | atomic_long_t tx_dropped; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1562 | |
Johannes Berg | b86e028 | 2007-04-26 20:48:23 -0700 | [diff] [blame] | 1563 | #ifdef CONFIG_WIRELESS_EXT |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1564 | const struct iw_handler_def * wireless_handlers; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1565 | struct iw_public_data * wireless_data; |
Johannes Berg | b86e028 | 2007-04-26 20:48:23 -0700 | [diff] [blame] | 1566 | #endif |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 1567 | const struct net_device_ops *netdev_ops; |
Stephen Hemminger | 76fd859 | 2006-09-08 11:16:13 -0700 | [diff] [blame] | 1568 | const struct ethtool_ops *ethtool_ops; |
Scott Feldman | 4170604 | 2015-03-15 21:07:14 -0700 | [diff] [blame] | 1569 | #ifdef CONFIG_NET_SWITCHDEV |
| 1570 | const struct swdev_ops *swdev_ops; |
| 1571 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1572 | |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 1573 | const struct header_ops *header_ops; |
| 1574 | |
Karoly Kemeny | 536721b | 2014-07-30 20:27:36 +0200 | [diff] [blame] | 1575 | unsigned int flags; |
| 1576 | unsigned int priv_flags; |
| 1577 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1578 | unsigned short gflags; |
Karoly Kemeny | 536721b | 2014-07-30 20:27:36 +0200 | [diff] [blame] | 1579 | unsigned short padded; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1580 | |
Karoly Kemeny | 536721b | 2014-07-30 20:27:36 +0200 | [diff] [blame] | 1581 | unsigned char operstate; |
| 1582 | unsigned char link_mode; |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 1583 | |
Karoly Kemeny | 536721b | 2014-07-30 20:27:36 +0200 | [diff] [blame] | 1584 | unsigned char if_port; |
| 1585 | unsigned char dma; |
Joe Perches | bdc220d | 2011-05-09 17:42:46 +0000 | [diff] [blame] | 1586 | |
Karoly Kemeny | 536721b | 2014-07-30 20:27:36 +0200 | [diff] [blame] | 1587 | unsigned int mtu; |
| 1588 | unsigned short type; |
| 1589 | unsigned short hard_header_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1590 | |
Johannes Berg | f5184d2 | 2008-05-12 20:48:31 -0700 | [diff] [blame] | 1591 | unsigned short needed_headroom; |
| 1592 | unsigned short needed_tailroom; |
| 1593 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1594 | /* Interface address info. */ |
Karoly Kemeny | 536721b | 2014-07-30 20:27:36 +0200 | [diff] [blame] | 1595 | unsigned char perm_addr[MAX_ADDR_LEN]; |
| 1596 | unsigned char addr_assign_type; |
| 1597 | unsigned char addr_len; |
Sebastian Siewior | a0a9663 | 2013-12-12 10:15:59 +0100 | [diff] [blame] | 1598 | unsigned short neigh_priv_len; |
Karoly Kemeny | 536721b | 2014-07-30 20:27:36 +0200 | [diff] [blame] | 1599 | unsigned short dev_id; |
| 1600 | unsigned short dev_port; |
Jiri Pirko | ccffad25 | 2009-05-22 23:22:17 +0000 | [diff] [blame] | 1601 | spinlock_t addr_list_lock; |
Thomas Graf | 14ffbbb | 2015-04-10 15:52:38 +0200 | [diff] [blame] | 1602 | unsigned char name_assign_type; |
| 1603 | bool uc_promisc; |
Karoly Kemeny | 536721b | 2014-07-30 20:27:36 +0200 | [diff] [blame] | 1604 | struct netdev_hw_addr_list uc; |
| 1605 | struct netdev_hw_addr_list mc; |
| 1606 | struct netdev_hw_addr_list dev_addrs; |
| 1607 | |
Eric Dumazet | 4c3d5e7 | 2013-03-30 06:31:03 +0000 | [diff] [blame] | 1608 | #ifdef CONFIG_SYSFS |
| 1609 | struct kset *queues_kset; |
| 1610 | #endif |
Wang Chen | 9d45abe | 2008-06-17 21:12:48 -0700 | [diff] [blame] | 1611 | unsigned int promiscuity; |
| 1612 | unsigned int allmulti; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1613 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1614 | |
| 1615 | /* Protocol specific pointers */ |
Jesse Gross | 65ac6a5 | 2010-10-20 13:56:05 +0000 | [diff] [blame] | 1616 | |
Ben Hutchings | d11ead7 | 2011-11-25 14:40:26 +0000 | [diff] [blame] | 1617 | #if IS_ENABLED(CONFIG_VLAN_8021Q) |
Karoly Kemeny | 536721b | 2014-07-30 20:27:36 +0200 | [diff] [blame] | 1618 | struct vlan_info __rcu *vlan_info; |
Jesse Gross | 65ac6a5 | 2010-10-20 13:56:05 +0000 | [diff] [blame] | 1619 | #endif |
Ben Hutchings | 34a430d | 2011-11-25 14:38:38 +0000 | [diff] [blame] | 1620 | #if IS_ENABLED(CONFIG_NET_DSA) |
Karoly Kemeny | 536721b | 2014-07-30 20:27:36 +0200 | [diff] [blame] | 1621 | struct dsa_switch_tree *dsa_ptr; |
Lennert Buytenhek | 91da11f | 2008-10-07 13:44:02 +0000 | [diff] [blame] | 1622 | #endif |
Ying Xue | 37cb062 | 2013-12-10 20:45:41 -0800 | [diff] [blame] | 1623 | #if IS_ENABLED(CONFIG_TIPC) |
Karoly Kemeny | 536721b | 2014-07-30 20:27:36 +0200 | [diff] [blame] | 1624 | struct tipc_bearer __rcu *tipc_ptr; |
Ying Xue | 37cb062 | 2013-12-10 20:45:41 -0800 | [diff] [blame] | 1625 | #endif |
Karoly Kemeny | 536721b | 2014-07-30 20:27:36 +0200 | [diff] [blame] | 1626 | void *atalk_ptr; |
| 1627 | struct in_device __rcu *ip_ptr; |
| 1628 | struct dn_dev __rcu *dn_ptr; |
| 1629 | struct inet6_dev __rcu *ip6_ptr; |
| 1630 | void *ax25_ptr; |
| 1631 | struct wireless_dev *ieee80211_ptr; |
Alexander Aring | 98a18b6 | 2014-11-02 06:44:54 +0100 | [diff] [blame] | 1632 | struct wpan_dev *ieee802154_ptr; |
Robert Shearman | 03c5774 | 2015-04-22 11:14:37 +0100 | [diff] [blame] | 1633 | #if IS_ENABLED(CONFIG_MPLS_ROUTING) |
| 1634 | struct mpls_dev __rcu *mpls_ptr; |
| 1635 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1636 | |
Eric Dumazet | 9356b8f | 2005-09-27 15:23:16 -0700 | [diff] [blame] | 1637 | /* |
Eric Dumazet | cd13539 | 2010-09-16 02:58:13 +0000 | [diff] [blame] | 1638 | * Cache lines mostly used on receive path (including eth_type_trans()) |
Eric Dumazet | 9356b8f | 2005-09-27 15:23:16 -0700 | [diff] [blame] | 1639 | */ |
Karoly Kemeny | 536721b | 2014-07-30 20:27:36 +0200 | [diff] [blame] | 1640 | unsigned long last_rx; |
Eric Dumazet | 4dc8913 | 2010-08-31 07:40:16 +0000 | [diff] [blame] | 1641 | |
Eric Dumazet | 9356b8f | 2005-09-27 15:23:16 -0700 | [diff] [blame] | 1642 | /* Interface address info used in eth_type_trans() */ |
Karoly Kemeny | 536721b | 2014-07-30 20:27:36 +0200 | [diff] [blame] | 1643 | unsigned char *dev_addr; |
Jiri Pirko | f001fde | 2009-05-05 02:48:28 +0000 | [diff] [blame] | 1644 | |
Tom Herbert | 0a9627f | 2010-03-16 08:03:29 +0000 | [diff] [blame] | 1645 | |
Michael Dalton | a953be5 | 2014-01-16 22:23:28 -0800 | [diff] [blame] | 1646 | #ifdef CONFIG_SYSFS |
Tom Herbert | 0a9627f | 2010-03-16 08:03:29 +0000 | [diff] [blame] | 1647 | struct netdev_rx_queue *_rx; |
| 1648 | |
Tom Herbert | 0a9627f | 2010-03-16 08:03:29 +0000 | [diff] [blame] | 1649 | unsigned int num_rx_queues; |
Ben Hutchings | 62fe0b4 | 2010-09-27 08:24:33 +0000 | [diff] [blame] | 1650 | unsigned int real_num_rx_queues; |
Ben Hutchings | c445477 | 2011-01-19 11:03:53 +0000 | [diff] [blame] | 1651 | |
Eric Dumazet | df33454 | 2010-03-24 19:13:54 +0000 | [diff] [blame] | 1652 | #endif |
Tom Herbert | 0a9627f | 2010-03-16 08:03:29 +0000 | [diff] [blame] | 1653 | |
Eric Dumazet | 3b47d30 | 2014-11-06 21:09:44 -0800 | [diff] [blame] | 1654 | unsigned long gro_flush_timeout; |
stephen hemminger | 61391cd | 2010-11-15 06:38:12 +0000 | [diff] [blame] | 1655 | rx_handler_func_t __rcu *rx_handler; |
| 1656 | void __rcu *rx_handler_data; |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 1657 | |
Eric Dumazet | 24824a0 | 2010-10-02 06:11:55 +0000 | [diff] [blame] | 1658 | struct netdev_queue __rcu *ingress_queue; |
Karoly Kemeny | 536721b | 2014-07-30 20:27:36 +0200 | [diff] [blame] | 1659 | unsigned char broadcast[MAX_ADDR_LEN]; |
Thomas Graf | 14ffbbb | 2015-04-10 15:52:38 +0200 | [diff] [blame] | 1660 | #ifdef CONFIG_RFS_ACCEL |
| 1661 | struct cpu_rmap *rx_cpu_rmap; |
| 1662 | #endif |
| 1663 | struct hlist_node index_hlist; |
Eric Dumazet | cd13539 | 2010-09-16 02:58:13 +0000 | [diff] [blame] | 1664 | |
| 1665 | /* |
| 1666 | * Cache lines mostly used on transmit path |
| 1667 | */ |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 1668 | struct netdev_queue *_tx ____cacheline_aligned_in_smp; |
| 1669 | unsigned int num_tx_queues; |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 1670 | unsigned int real_num_tx_queues; |
Patrick McHardy | af356af | 2009-09-04 06:41:18 +0000 | [diff] [blame] | 1671 | struct Qdisc *qdisc; |
Karoly Kemeny | 536721b | 2014-07-30 20:27:36 +0200 | [diff] [blame] | 1672 | unsigned long tx_queue_len; |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 1673 | spinlock_t tx_global_lock; |
Thomas Graf | 14ffbbb | 2015-04-10 15:52:38 +0200 | [diff] [blame] | 1674 | int watchdog_timeo; |
Eric Dumazet | cd13539 | 2010-09-16 02:58:13 +0000 | [diff] [blame] | 1675 | |
Tom Herbert | bf26414 | 2010-11-26 08:36:09 +0000 | [diff] [blame] | 1676 | #ifdef CONFIG_XPS |
Eric Dumazet | a417786 | 2010-11-28 21:43:02 +0000 | [diff] [blame] | 1677 | struct xps_dev_maps __rcu *xps_maps; |
Tom Herbert | bf26414 | 2010-11-26 08:36:09 +0000 | [diff] [blame] | 1678 | #endif |
Tom Herbert | 1d24eb4 | 2010-11-21 13:17:27 +0000 | [diff] [blame] | 1679 | |
Eric Dumazet | 9356b8f | 2005-09-27 15:23:16 -0700 | [diff] [blame] | 1680 | /* These may be needed for future network-power-down code. */ |
Eric Dumazet | 9d21493 | 2009-05-17 20:55:16 -0700 | [diff] [blame] | 1681 | |
| 1682 | /* |
| 1683 | * trans_start here is expensive for high speed devices on SMP, |
| 1684 | * please use netdev_queue->trans_start instead. |
| 1685 | */ |
Karoly Kemeny | 536721b | 2014-07-30 20:27:36 +0200 | [diff] [blame] | 1686 | unsigned long trans_start; |
Eric Dumazet | 9356b8f | 2005-09-27 15:23:16 -0700 | [diff] [blame] | 1687 | |
Eric Dumazet | 9356b8f | 2005-09-27 15:23:16 -0700 | [diff] [blame] | 1688 | struct timer_list watchdog_timer; |
| 1689 | |
Eric Dumazet | 29b4433 | 2010-10-11 10:22:12 +0000 | [diff] [blame] | 1690 | int __percpu *pcpu_refcnt; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1691 | struct list_head todo_list; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1692 | |
Eric Dumazet | e014deb | 2009-11-17 05:59:21 +0000 | [diff] [blame] | 1693 | struct list_head link_watch_list; |
Herbert Xu | 572a103 | 2007-05-08 18:34:17 -0700 | [diff] [blame] | 1694 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1695 | enum { NETREG_UNINITIALIZED=0, |
Stephen Hemminger | b17a7c1 | 2006-05-10 13:21:17 -0700 | [diff] [blame] | 1696 | NETREG_REGISTERED, /* completed register_netdevice */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1697 | NETREG_UNREGISTERING, /* called unregister_netdevice */ |
| 1698 | NETREG_UNREGISTERED, /* completed unregister todo */ |
| 1699 | NETREG_RELEASED, /* called free_netdev */ |
Benjamin Herrenschmidt | 937f1ba | 2009-01-14 21:05:05 -0800 | [diff] [blame] | 1700 | NETREG_DUMMY, /* dummy device for NAPI poll */ |
Eric Dumazet | 449f454 | 2011-05-19 12:24:16 +0000 | [diff] [blame] | 1701 | } reg_state:8; |
| 1702 | |
Karoly Kemeny | 536721b | 2014-07-30 20:27:36 +0200 | [diff] [blame] | 1703 | bool dismantle; |
Patrick McHardy | a283576 | 2010-02-26 06:34:51 +0000 | [diff] [blame] | 1704 | |
| 1705 | enum { |
| 1706 | RTNL_LINK_INITIALIZED, |
| 1707 | RTNL_LINK_INITIALIZING, |
| 1708 | } rtnl_link_state:16; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1709 | |
Stephen Hemminger | d314774 | 2008-11-19 21:32:24 -0800 | [diff] [blame] | 1710 | void (*destructor)(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1711 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1712 | #ifdef CONFIG_NETPOLL |
Cong Wang | 5fbee84 | 2013-01-22 21:29:39 +0000 | [diff] [blame] | 1713 | struct netpoll_info __rcu *npinfo; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1714 | #endif |
David S. Miller | eae792b | 2008-07-15 03:03:33 -0700 | [diff] [blame] | 1715 | |
Eric W. Biederman | 0c5c9fb | 2015-03-11 23:06:44 -0500 | [diff] [blame] | 1716 | possible_net_t nd_net; |
Eric W. Biederman | 4a1c537 | 2007-09-12 11:56:32 +0200 | [diff] [blame] | 1717 | |
David S. Miller | 4951704 | 2008-05-12 03:29:11 -0700 | [diff] [blame] | 1718 | /* mid-layer private */ |
Eric Dumazet | a7855c7 | 2010-09-23 23:51:51 +0000 | [diff] [blame] | 1719 | union { |
Karoly Kemeny | 536721b | 2014-07-30 20:27:36 +0200 | [diff] [blame] | 1720 | void *ml_priv; |
| 1721 | struct pcpu_lstats __percpu *lstats; |
Li RongQing | 8f84985 | 2014-01-04 13:57:59 +0800 | [diff] [blame] | 1722 | struct pcpu_sw_netstats __percpu *tstats; |
Karoly Kemeny | 536721b | 2014-07-30 20:27:36 +0200 | [diff] [blame] | 1723 | struct pcpu_dstats __percpu *dstats; |
| 1724 | struct pcpu_vstats __percpu *vstats; |
Eric Dumazet | a7855c7 | 2010-09-23 23:51:51 +0000 | [diff] [blame] | 1725 | }; |
Karoly Kemeny | 536721b | 2014-07-30 20:27:36 +0200 | [diff] [blame] | 1726 | |
Eric Dumazet | 3cc77ec | 2010-10-24 21:32:36 +0000 | [diff] [blame] | 1727 | struct garp_port __rcu *garp_port; |
David Ward | febf018 | 2013-02-08 17:17:06 +0000 | [diff] [blame] | 1728 | struct mrp_port __rcu *mrp_port; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1729 | |
Karoly Kemeny | 536721b | 2014-07-30 20:27:36 +0200 | [diff] [blame] | 1730 | struct device dev; |
Eric W. Biederman | 0c509a6 | 2009-10-29 14:18:21 +0000 | [diff] [blame] | 1731 | const struct attribute_group *sysfs_groups[4]; |
Michael Dalton | a953be5 | 2014-01-16 22:23:28 -0800 | [diff] [blame] | 1732 | const struct attribute_group *sysfs_rx_queue_group; |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 1733 | |
Patrick McHardy | 38f7b87 | 2007-06-13 12:03:51 -0700 | [diff] [blame] | 1734 | const struct rtnl_link_ops *rtnl_link_ops; |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 1735 | |
Peter P Waskiewicz Jr | 82cc1a7 | 2008-03-21 03:43:19 -0700 | [diff] [blame] | 1736 | /* for setting kernel sock attribute on TCP connection setup */ |
| 1737 | #define GSO_MAX_SIZE 65536 |
| 1738 | unsigned int gso_max_size; |
Ben Hutchings | 30b678d | 2012-07-30 15:57:00 +0000 | [diff] [blame] | 1739 | #define GSO_MAX_SEGS 65535 |
| 1740 | u16 gso_max_segs; |
Eric Dumazet | fcbeb97 | 2014-10-05 10:11:27 -0700 | [diff] [blame] | 1741 | u16 gso_min_segs; |
Jeff Kirsher | 7a6b6f5 | 2008-11-25 01:02:08 -0800 | [diff] [blame] | 1742 | #ifdef CONFIG_DCB |
Stephen Hemminger | 3295354 | 2009-10-05 06:01:03 +0000 | [diff] [blame] | 1743 | const struct dcbnl_rtnl_ops *dcbnl_ops; |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 1744 | #endif |
John Fastabend | 4f57c08 | 2011-01-17 08:06:04 +0000 | [diff] [blame] | 1745 | u8 num_tc; |
| 1746 | struct netdev_tc_txq tc_to_txq[TC_MAX_QUEUE]; |
| 1747 | u8 prio_tc_map[TC_BITMASK + 1]; |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 1748 | |
Ben Hutchings | d11ead7 | 2011-11-25 14:40:26 +0000 | [diff] [blame] | 1749 | #if IS_ENABLED(CONFIG_FCOE) |
Yi Zou | 4d288d5 | 2009-02-27 14:06:59 -0800 | [diff] [blame] | 1750 | unsigned int fcoe_ddp_xid; |
| 1751 | #endif |
Daniel Borkmann | 86f8515 | 2013-12-29 17:27:11 +0100 | [diff] [blame] | 1752 | #if IS_ENABLED(CONFIG_CGROUP_NET_PRIO) |
Neil Horman | 5bc1421 | 2011-11-22 05:10:51 +0000 | [diff] [blame] | 1753 | struct netprio_map __rcu *priomap; |
| 1754 | #endif |
Richard Cochran | c1f19b5 | 2010-07-17 08:49:36 +0000 | [diff] [blame] | 1755 | struct phy_device *phydev; |
Eric Dumazet | 23d3b8b | 2012-09-05 01:02:56 +0000 | [diff] [blame] | 1756 | struct lock_class_key *qdisc_tx_busylock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1757 | }; |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1758 | #define to_net_dev(d) container_of(d, struct net_device, dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1759 | |
| 1760 | #define NETDEV_ALIGN 32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1761 | |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 1762 | static inline |
John Fastabend | 4f57c08 | 2011-01-17 08:06:04 +0000 | [diff] [blame] | 1763 | int netdev_get_prio_tc_map(const struct net_device *dev, u32 prio) |
| 1764 | { |
| 1765 | return dev->prio_tc_map[prio & TC_BITMASK]; |
| 1766 | } |
| 1767 | |
| 1768 | static inline |
| 1769 | int netdev_set_prio_tc_map(struct net_device *dev, u8 prio, u8 tc) |
| 1770 | { |
| 1771 | if (tc >= dev->num_tc) |
| 1772 | return -EINVAL; |
| 1773 | |
| 1774 | dev->prio_tc_map[prio & TC_BITMASK] = tc & TC_BITMASK; |
| 1775 | return 0; |
| 1776 | } |
| 1777 | |
| 1778 | static inline |
| 1779 | void netdev_reset_tc(struct net_device *dev) |
| 1780 | { |
| 1781 | dev->num_tc = 0; |
| 1782 | memset(dev->tc_to_txq, 0, sizeof(dev->tc_to_txq)); |
| 1783 | memset(dev->prio_tc_map, 0, sizeof(dev->prio_tc_map)); |
| 1784 | } |
| 1785 | |
| 1786 | static inline |
| 1787 | int netdev_set_tc_queue(struct net_device *dev, u8 tc, u16 count, u16 offset) |
| 1788 | { |
| 1789 | if (tc >= dev->num_tc) |
| 1790 | return -EINVAL; |
| 1791 | |
| 1792 | dev->tc_to_txq[tc].count = count; |
| 1793 | dev->tc_to_txq[tc].offset = offset; |
| 1794 | return 0; |
| 1795 | } |
| 1796 | |
| 1797 | static inline |
| 1798 | int netdev_set_num_tc(struct net_device *dev, u8 num_tc) |
| 1799 | { |
| 1800 | if (num_tc > TC_MAX_QUEUE) |
| 1801 | return -EINVAL; |
| 1802 | |
| 1803 | dev->num_tc = num_tc; |
| 1804 | return 0; |
| 1805 | } |
| 1806 | |
| 1807 | static inline |
| 1808 | int netdev_get_num_tc(struct net_device *dev) |
| 1809 | { |
| 1810 | return dev->num_tc; |
| 1811 | } |
| 1812 | |
| 1813 | static inline |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 1814 | struct netdev_queue *netdev_get_tx_queue(const struct net_device *dev, |
| 1815 | unsigned int index) |
| 1816 | { |
| 1817 | return &dev->_tx[index]; |
| 1818 | } |
| 1819 | |
Daniel Borkmann | 10c51b5623 | 2014-08-27 11:11:27 +0200 | [diff] [blame] | 1820 | static inline struct netdev_queue *skb_get_tx_queue(const struct net_device *dev, |
| 1821 | const struct sk_buff *skb) |
| 1822 | { |
| 1823 | return netdev_get_tx_queue(dev, skb_get_queue_mapping(skb)); |
| 1824 | } |
| 1825 | |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 1826 | static inline void netdev_for_each_tx_queue(struct net_device *dev, |
| 1827 | void (*f)(struct net_device *, |
| 1828 | struct netdev_queue *, |
| 1829 | void *), |
| 1830 | void *arg) |
| 1831 | { |
| 1832 | unsigned int i; |
| 1833 | |
| 1834 | for (i = 0; i < dev->num_tx_queues; i++) |
| 1835 | f(dev, &dev->_tx[i], arg); |
| 1836 | } |
| 1837 | |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 1838 | struct netdev_queue *netdev_pick_tx(struct net_device *dev, |
Jason Wang | f663dd9 | 2014-01-10 16:18:26 +0800 | [diff] [blame] | 1839 | struct sk_buff *skb, |
| 1840 | void *accel_priv); |
Amerigo Wang | 8c4c49d | 2012-09-17 20:16:31 +0000 | [diff] [blame] | 1841 | |
YOSHIFUJI Hideaki | c346dca | 2008-03-25 21:47:49 +0900 | [diff] [blame] | 1842 | /* |
| 1843 | * Net namespace inlines |
| 1844 | */ |
| 1845 | static inline |
| 1846 | struct net *dev_net(const struct net_device *dev) |
| 1847 | { |
Eric Dumazet | c2d9ba9 | 2010-06-01 06:51:19 +0000 | [diff] [blame] | 1848 | return read_pnet(&dev->nd_net); |
YOSHIFUJI Hideaki | c346dca | 2008-03-25 21:47:49 +0900 | [diff] [blame] | 1849 | } |
| 1850 | |
| 1851 | static inline |
Denis V. Lunev | f5aa23f | 2008-03-26 00:48:17 -0700 | [diff] [blame] | 1852 | void dev_net_set(struct net_device *dev, struct net *net) |
YOSHIFUJI Hideaki | c346dca | 2008-03-25 21:47:49 +0900 | [diff] [blame] | 1853 | { |
Eric W. Biederman | 0c5c9fb | 2015-03-11 23:06:44 -0500 | [diff] [blame] | 1854 | write_pnet(&dev->nd_net, net); |
YOSHIFUJI Hideaki | c346dca | 2008-03-25 21:47:49 +0900 | [diff] [blame] | 1855 | } |
| 1856 | |
Florian Fainelli | 3e8a72d | 2014-08-27 17:04:46 -0700 | [diff] [blame] | 1857 | static inline bool netdev_uses_dsa(struct net_device *dev) |
Lennert Buytenhek | cf85d08 | 2008-10-07 13:45:02 +0000 | [diff] [blame] | 1858 | { |
Alexander Duyck | 3fc8867 | 2014-09-12 23:12:46 -0700 | [diff] [blame] | 1859 | #if IS_ENABLED(CONFIG_NET_DSA) |
Florian Fainelli | 5aed85c | 2014-08-27 17:04:52 -0700 | [diff] [blame] | 1860 | if (dev->dsa_ptr != NULL) |
| 1861 | return dsa_uses_tagged_protocol(dev->dsa_ptr); |
Lennert Buytenhek | cf85d08 | 2008-10-07 13:45:02 +0000 | [diff] [blame] | 1862 | #endif |
Florian Fainelli | 5aed85c | 2014-08-27 17:04:52 -0700 | [diff] [blame] | 1863 | return false; |
Lennert Buytenhek | 396138f | 2008-10-07 13:46:07 +0000 | [diff] [blame] | 1864 | } |
| 1865 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1866 | /** |
| 1867 | * netdev_priv - access network device private data |
| 1868 | * @dev: network device |
| 1869 | * |
| 1870 | * Get network device private data |
| 1871 | */ |
Patrick McHardy | 6472ce6 | 2007-06-13 12:03:21 -0700 | [diff] [blame] | 1872 | static inline void *netdev_priv(const struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1873 | { |
Eric Dumazet | 1ce8e7b | 2009-05-27 04:42:37 +0000 | [diff] [blame] | 1874 | return (char *)dev + ALIGN(sizeof(struct net_device), NETDEV_ALIGN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1875 | } |
| 1876 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1877 | /* Set the sysfs physical device reference for the network logical device |
| 1878 | * if set prior to registration will cause a symlink during initialization. |
| 1879 | */ |
Greg Kroah-Hartman | 43cb76d | 2002-04-09 12:14:34 -0700 | [diff] [blame] | 1880 | #define SET_NETDEV_DEV(net, pdev) ((net)->dev.parent = (pdev)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1881 | |
Marcel Holtmann | 384912e | 2009-08-31 21:08:19 +0000 | [diff] [blame] | 1882 | /* Set the sysfs device type for the network logical device to allow |
Maxime Jayat | 3f79410 | 2013-10-12 01:29:46 +0200 | [diff] [blame] | 1883 | * fine-grained identification of different network device types. For |
Marcel Holtmann | 384912e | 2009-08-31 21:08:19 +0000 | [diff] [blame] | 1884 | * example Ethernet, Wirelss LAN, Bluetooth, WiMAX etc. |
| 1885 | */ |
| 1886 | #define SET_NETDEV_DEVTYPE(net, devtype) ((net)->dev.type = (devtype)) |
| 1887 | |
Eric Dumazet | 82dc3c6 | 2013-03-05 15:57:22 +0000 | [diff] [blame] | 1888 | /* Default NAPI poll() weight |
| 1889 | * Device drivers are strongly advised to not use bigger value |
| 1890 | */ |
| 1891 | #define NAPI_POLL_WEIGHT 64 |
| 1892 | |
Stephen Hemminger | 3b582cc | 2007-11-01 02:21:47 -0700 | [diff] [blame] | 1893 | /** |
| 1894 | * netif_napi_add - initialize a napi context |
| 1895 | * @dev: network device |
| 1896 | * @napi: napi context |
| 1897 | * @poll: polling function |
| 1898 | * @weight: default weight |
| 1899 | * |
| 1900 | * netif_napi_add() must be used to initialize a napi context prior to calling |
| 1901 | * *any* of the other napi related functions. |
| 1902 | */ |
Herbert Xu | d565b0a | 2008-12-15 23:38:52 -0800 | [diff] [blame] | 1903 | void netif_napi_add(struct net_device *dev, struct napi_struct *napi, |
| 1904 | int (*poll)(struct napi_struct *, int), int weight); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1905 | |
Alexander Duyck | d815653 | 2008-07-08 15:13:05 -0700 | [diff] [blame] | 1906 | /** |
| 1907 | * netif_napi_del - remove a napi context |
| 1908 | * @napi: napi context |
| 1909 | * |
| 1910 | * netif_napi_del() removes a napi context from the network device napi list |
| 1911 | */ |
Herbert Xu | d565b0a | 2008-12-15 23:38:52 -0800 | [diff] [blame] | 1912 | void netif_napi_del(struct napi_struct *napi); |
| 1913 | |
| 1914 | struct napi_gro_cb { |
Herbert Xu | 78a478d | 2009-05-26 18:50:21 +0000 | [diff] [blame] | 1915 | /* Virtual address of skb_shinfo(skb)->frags[0].page + offset. */ |
| 1916 | void *frag0; |
| 1917 | |
Herbert Xu | 7489594 | 2009-05-26 18:50:27 +0000 | [diff] [blame] | 1918 | /* Length of frag0. */ |
| 1919 | unsigned int frag0_len; |
| 1920 | |
Herbert Xu | 8691173 | 2009-01-29 14:19:50 +0000 | [diff] [blame] | 1921 | /* This indicates where we are processing relative to skb->data. */ |
| 1922 | int data_offset; |
| 1923 | |
Herbert Xu | d565b0a | 2008-12-15 23:38:52 -0800 | [diff] [blame] | 1924 | /* This is non-zero if the packet cannot be merged with the new skb. */ |
Jerry Chu | bf5a755 | 2014-01-07 10:23:19 -0800 | [diff] [blame] | 1925 | u16 flush; |
| 1926 | |
| 1927 | /* Save the IP ID here and check when we get to the transport layer */ |
| 1928 | u16 flush_id; |
Herbert Xu | d565b0a | 2008-12-15 23:38:52 -0800 | [diff] [blame] | 1929 | |
| 1930 | /* Number of segments aggregated. */ |
Eric Dumazet | 2e71a6f | 2012-10-06 08:08:49 +0000 | [diff] [blame] | 1931 | u16 count; |
| 1932 | |
Tom Herbert | 15e2396 | 2015-02-10 16:30:31 -0800 | [diff] [blame] | 1933 | /* Start offset for remote checksum offload */ |
| 1934 | u16 gro_remcsum_start; |
| 1935 | |
Eric Dumazet | 2e71a6f | 2012-10-06 08:08:49 +0000 | [diff] [blame] | 1936 | /* jiffies when first packet was created/queued */ |
| 1937 | unsigned long age; |
Eric Dumazet | 8634724 | 2012-10-08 21:38:50 +0200 | [diff] [blame] | 1938 | |
Tom Herbert | afe9332 | 2014-09-17 12:25:57 -0700 | [diff] [blame] | 1939 | /* Used in ipv6_gro_receive() and foo-over-udp */ |
Or Gerlitz | b582ef0 | 2014-01-20 13:59:19 +0200 | [diff] [blame] | 1940 | u16 proto; |
| 1941 | |
Tom Herbert | baa32ff | 2015-02-10 16:30:30 -0800 | [diff] [blame] | 1942 | /* This is non-zero if the packet may be of the same flow. */ |
| 1943 | u8 same_flow:1; |
| 1944 | |
Or Gerlitz | b582ef0 | 2014-01-20 13:59:19 +0200 | [diff] [blame] | 1945 | /* Used in udp_gro_receive */ |
Tom Herbert | 573e8fc | 2014-08-22 13:33:47 -0700 | [diff] [blame] | 1946 | u8 udp_mark:1; |
| 1947 | |
| 1948 | /* GRO checksum is valid */ |
| 1949 | u8 csum_valid:1; |
| 1950 | |
Tom Herbert | 662880f | 2014-08-27 21:26:56 -0700 | [diff] [blame] | 1951 | /* Number of checksums via CHECKSUM_UNNECESSARY */ |
| 1952 | u8 csum_cnt:3; |
Eric Dumazet | c3c7c25 | 2012-12-06 13:54:59 +0000 | [diff] [blame] | 1953 | |
Tom Herbert | baa32ff | 2015-02-10 16:30:30 -0800 | [diff] [blame] | 1954 | /* Free the skb? */ |
| 1955 | u8 free:2; |
| 1956 | #define NAPI_GRO_FREE 1 |
| 1957 | #define NAPI_GRO_FREE_STOLEN_HEAD 2 |
| 1958 | |
Tom Herbert | efc98d0 | 2014-10-03 15:48:08 -0700 | [diff] [blame] | 1959 | /* Used in foo-over-udp, set in udp[46]_gro_receive */ |
| 1960 | u8 is_ipv6:1; |
| 1961 | |
Tom Herbert | baa32ff | 2015-02-10 16:30:30 -0800 | [diff] [blame] | 1962 | /* 7 bit hole */ |
| 1963 | |
Jerry Chu | bf5a755 | 2014-01-07 10:23:19 -0800 | [diff] [blame] | 1964 | /* used to support CHECKSUM_COMPLETE for tunneling protocols */ |
| 1965 | __wsum csum; |
| 1966 | |
Eric Dumazet | c3c7c25 | 2012-12-06 13:54:59 +0000 | [diff] [blame] | 1967 | /* used in skb_gro_receive() slow path */ |
| 1968 | struct sk_buff *last; |
Herbert Xu | d565b0a | 2008-12-15 23:38:52 -0800 | [diff] [blame] | 1969 | }; |
| 1970 | |
| 1971 | #define NAPI_GRO_CB(skb) ((struct napi_gro_cb *)(skb)->cb) |
Alexander Duyck | d815653 | 2008-07-08 15:13:05 -0700 | [diff] [blame] | 1972 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1973 | struct packet_type { |
David S. Miller | f2ccd8f | 2005-08-09 19:34:12 -0700 | [diff] [blame] | 1974 | __be16 type; /* This is really htons(ether_type). */ |
| 1975 | struct net_device *dev; /* NULL is wildcarded here */ |
| 1976 | int (*func) (struct sk_buff *, |
| 1977 | struct net_device *, |
| 1978 | struct packet_type *, |
| 1979 | struct net_device *); |
Eric Leblond | c0de08d | 2012-08-16 22:02:58 +0000 | [diff] [blame] | 1980 | bool (*id_match)(struct packet_type *ptype, |
| 1981 | struct sock *sk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1982 | void *af_packet_priv; |
| 1983 | struct list_head list; |
| 1984 | }; |
| 1985 | |
Vlad Yasevich | f191a1d | 2012-11-15 08:49:23 +0000 | [diff] [blame] | 1986 | struct offload_callbacks { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1987 | struct sk_buff *(*gso_segment)(struct sk_buff *skb, |
| 1988 | netdev_features_t features); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1989 | struct sk_buff **(*gro_receive)(struct sk_buff **head, |
Tom Herbert | a2b12f3 | 2015-01-12 17:00:37 -0800 | [diff] [blame] | 1990 | struct sk_buff *skb); |
Jerry Chu | 299603e8 | 2013-12-11 20:53:45 -0800 | [diff] [blame] | 1991 | int (*gro_complete)(struct sk_buff *skb, int nhoff); |
Vlad Yasevich | f191a1d | 2012-11-15 08:49:23 +0000 | [diff] [blame] | 1992 | }; |
| 1993 | |
| 1994 | struct packet_offload { |
| 1995 | __be16 type; /* This is really htons(ether_type). */ |
| 1996 | struct offload_callbacks callbacks; |
| 1997 | struct list_head list; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1998 | }; |
| 1999 | |
Tom Herbert | a2b12f3 | 2015-01-12 17:00:37 -0800 | [diff] [blame] | 2000 | struct udp_offload; |
| 2001 | |
| 2002 | struct udp_offload_callbacks { |
| 2003 | struct sk_buff **(*gro_receive)(struct sk_buff **head, |
| 2004 | struct sk_buff *skb, |
| 2005 | struct udp_offload *uoff); |
| 2006 | int (*gro_complete)(struct sk_buff *skb, |
| 2007 | int nhoff, |
| 2008 | struct udp_offload *uoff); |
| 2009 | }; |
| 2010 | |
Or Gerlitz | b582ef0 | 2014-01-20 13:59:19 +0200 | [diff] [blame] | 2011 | struct udp_offload { |
| 2012 | __be16 port; |
Tom Herbert | afe9332 | 2014-09-17 12:25:57 -0700 | [diff] [blame] | 2013 | u8 ipproto; |
Tom Herbert | a2b12f3 | 2015-01-12 17:00:37 -0800 | [diff] [blame] | 2014 | struct udp_offload_callbacks callbacks; |
Or Gerlitz | b582ef0 | 2014-01-20 13:59:19 +0200 | [diff] [blame] | 2015 | }; |
| 2016 | |
Li RongQing | 8f84985 | 2014-01-04 13:57:59 +0800 | [diff] [blame] | 2017 | /* often modified stats are per cpu, other are shared (netdev->stats) */ |
| 2018 | struct pcpu_sw_netstats { |
| 2019 | u64 rx_packets; |
| 2020 | u64 rx_bytes; |
| 2021 | u64 tx_packets; |
| 2022 | u64 tx_bytes; |
| 2023 | struct u64_stats_sync syncp; |
| 2024 | }; |
| 2025 | |
WANG Cong | 1c213bd | 2014-02-13 11:46:28 -0800 | [diff] [blame] | 2026 | #define netdev_alloc_pcpu_stats(type) \ |
| 2027 | ({ \ |
stephen hemminger | 693350c | 2014-03-10 09:41:46 -0700 | [diff] [blame] | 2028 | typeof(type) __percpu *pcpu_stats = alloc_percpu(type); \ |
WANG Cong | 1c213bd | 2014-02-13 11:46:28 -0800 | [diff] [blame] | 2029 | if (pcpu_stats) { \ |
Johannes Berg | ec65aaf | 2015-04-23 12:06:30 +0200 | [diff] [blame] | 2030 | int __cpu; \ |
| 2031 | for_each_possible_cpu(__cpu) { \ |
WANG Cong | 1c213bd | 2014-02-13 11:46:28 -0800 | [diff] [blame] | 2032 | typeof(type) *stat; \ |
Johannes Berg | ec65aaf | 2015-04-23 12:06:30 +0200 | [diff] [blame] | 2033 | stat = per_cpu_ptr(pcpu_stats, __cpu); \ |
WANG Cong | 1c213bd | 2014-02-13 11:46:28 -0800 | [diff] [blame] | 2034 | u64_stats_init(&stat->syncp); \ |
| 2035 | } \ |
| 2036 | } \ |
| 2037 | pcpu_stats; \ |
| 2038 | }) |
| 2039 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2040 | #include <linux/notifier.h> |
| 2041 | |
Amerigo Wang | dcfe142 | 2011-07-25 17:13:09 -0700 | [diff] [blame] | 2042 | /* netdevice notifier chain. Please remember to update the rtnetlink |
| 2043 | * notification exclusion list in rtnetlink_event() when adding new |
| 2044 | * types. |
| 2045 | */ |
| 2046 | #define NETDEV_UP 0x0001 /* For now you can't veto a device up/down */ |
| 2047 | #define NETDEV_DOWN 0x0002 |
| 2048 | #define NETDEV_REBOOT 0x0003 /* Tell a protocol stack a network interface |
| 2049 | detected a hardware crash and restarted |
| 2050 | - we can use this eg to kick tcp sessions |
| 2051 | once done */ |
| 2052 | #define NETDEV_CHANGE 0x0004 /* Notify device state change */ |
| 2053 | #define NETDEV_REGISTER 0x0005 |
| 2054 | #define NETDEV_UNREGISTER 0x0006 |
Veaceslav Falico | 1d486bf | 2014-01-16 00:02:18 +0100 | [diff] [blame] | 2055 | #define NETDEV_CHANGEMTU 0x0007 /* notify after mtu change happened */ |
Amerigo Wang | dcfe142 | 2011-07-25 17:13:09 -0700 | [diff] [blame] | 2056 | #define NETDEV_CHANGEADDR 0x0008 |
| 2057 | #define NETDEV_GOING_DOWN 0x0009 |
| 2058 | #define NETDEV_CHANGENAME 0x000A |
| 2059 | #define NETDEV_FEAT_CHANGE 0x000B |
| 2060 | #define NETDEV_BONDING_FAILOVER 0x000C |
| 2061 | #define NETDEV_PRE_UP 0x000D |
| 2062 | #define NETDEV_PRE_TYPE_CHANGE 0x000E |
| 2063 | #define NETDEV_POST_TYPE_CHANGE 0x000F |
| 2064 | #define NETDEV_POST_INIT 0x0010 |
Eric Dumazet | 0115e8e | 2012-08-22 17:19:46 +0000 | [diff] [blame] | 2065 | #define NETDEV_UNREGISTER_FINAL 0x0011 |
Amerigo Wang | dcfe142 | 2011-07-25 17:13:09 -0700 | [diff] [blame] | 2066 | #define NETDEV_RELEASE 0x0012 |
| 2067 | #define NETDEV_NOTIFY_PEERS 0x0013 |
| 2068 | #define NETDEV_JOIN 0x0014 |
Jiri Pirko | 42e52bf | 2013-05-25 04:12:10 +0000 | [diff] [blame] | 2069 | #define NETDEV_CHANGEUPPER 0x0015 |
Jiri Pirko | 4aa5dee | 2013-07-20 12:13:53 +0200 | [diff] [blame] | 2070 | #define NETDEV_RESEND_IGMP 0x0016 |
Veaceslav Falico | 1d486bf | 2014-01-16 00:02:18 +0100 | [diff] [blame] | 2071 | #define NETDEV_PRECHANGEMTU 0x0017 /* notify before mtu change happened */ |
Jiri Pirko | d4261e5 | 2014-08-19 16:02:12 +0200 | [diff] [blame] | 2072 | #define NETDEV_CHANGEINFODATA 0x0018 |
Moni Shoua | 61bd385 | 2015-02-03 16:48:29 +0200 | [diff] [blame] | 2073 | #define NETDEV_BONDING_INFO 0x0019 |
Amerigo Wang | dcfe142 | 2011-07-25 17:13:09 -0700 | [diff] [blame] | 2074 | |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 2075 | int register_netdevice_notifier(struct notifier_block *nb); |
| 2076 | int unregister_netdevice_notifier(struct notifier_block *nb); |
Jiri Pirko | 351638e | 2013-05-28 01:30:21 +0000 | [diff] [blame] | 2077 | |
| 2078 | struct netdev_notifier_info { |
| 2079 | struct net_device *dev; |
| 2080 | }; |
| 2081 | |
Jiri Pirko | be9efd3 | 2013-05-28 01:30:22 +0000 | [diff] [blame] | 2082 | struct netdev_notifier_change_info { |
| 2083 | struct netdev_notifier_info info; /* must be first */ |
| 2084 | unsigned int flags_changed; |
| 2085 | }; |
| 2086 | |
Cong Wang | 75538c2 | 2013-05-29 11:30:50 +0800 | [diff] [blame] | 2087 | static inline void netdev_notifier_info_init(struct netdev_notifier_info *info, |
| 2088 | struct net_device *dev) |
| 2089 | { |
| 2090 | info->dev = dev; |
| 2091 | } |
| 2092 | |
Jiri Pirko | 351638e | 2013-05-28 01:30:21 +0000 | [diff] [blame] | 2093 | static inline struct net_device * |
| 2094 | netdev_notifier_info_to_dev(const struct netdev_notifier_info *info) |
| 2095 | { |
| 2096 | return info->dev; |
| 2097 | } |
| 2098 | |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 2099 | int call_netdevice_notifiers(unsigned long val, struct net_device *dev); |
Amerigo Wang | dcfe142 | 2011-07-25 17:13:09 -0700 | [diff] [blame] | 2100 | |
| 2101 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2102 | extern rwlock_t dev_base_lock; /* Device list lock */ |
| 2103 | |
Eric W. Biederman | 881d966 | 2007-09-17 11:56:21 -0700 | [diff] [blame] | 2104 | #define for_each_netdev(net, d) \ |
| 2105 | list_for_each_entry(d, &(net)->dev_base_head, dev_list) |
Eric W. Biederman | dcbccbd4 | 2009-11-29 22:25:26 +0000 | [diff] [blame] | 2106 | #define for_each_netdev_reverse(net, d) \ |
| 2107 | list_for_each_entry_reverse(d, &(net)->dev_base_head, dev_list) |
Eric Dumazet | c6d14c8 | 2009-11-04 05:43:23 -0800 | [diff] [blame] | 2108 | #define for_each_netdev_rcu(net, d) \ |
| 2109 | list_for_each_entry_rcu(d, &(net)->dev_base_head, dev_list) |
Eric W. Biederman | 881d966 | 2007-09-17 11:56:21 -0700 | [diff] [blame] | 2110 | #define for_each_netdev_safe(net, d, n) \ |
| 2111 | list_for_each_entry_safe(d, n, &(net)->dev_base_head, dev_list) |
| 2112 | #define for_each_netdev_continue(net, d) \ |
| 2113 | list_for_each_entry_continue(d, &(net)->dev_base_head, dev_list) |
stephen hemminger | 254245d | 2009-11-10 07:54:47 +0000 | [diff] [blame] | 2114 | #define for_each_netdev_continue_rcu(net, d) \ |
| 2115 | list_for_each_entry_continue_rcu(d, &(net)->dev_base_head, dev_list) |
nikolay@redhat.com | 8a7fbfa | 2013-03-12 02:49:01 +0000 | [diff] [blame] | 2116 | #define for_each_netdev_in_bond_rcu(bond, slave) \ |
| 2117 | for_each_netdev_rcu(&init_net, slave) \ |
Benjamin Poirier | 4ccce02 | 2015-01-14 16:52:35 +0900 | [diff] [blame] | 2118 | if (netdev_master_upper_dev_get_rcu(slave) == (bond)) |
Pavel Emelianov | 7562f87 | 2007-05-03 15:13:45 -0700 | [diff] [blame] | 2119 | #define net_device_entry(lh) list_entry(lh, struct net_device, dev_list) |
| 2120 | |
Daniel Lezcano | a050c33 | 2007-09-12 14:57:09 +0200 | [diff] [blame] | 2121 | static inline struct net_device *next_net_device(struct net_device *dev) |
| 2122 | { |
| 2123 | struct list_head *lh; |
| 2124 | struct net *net; |
Pavel Emelianov | 7562f87 | 2007-05-03 15:13:45 -0700 | [diff] [blame] | 2125 | |
YOSHIFUJI Hideaki | c346dca | 2008-03-25 21:47:49 +0900 | [diff] [blame] | 2126 | net = dev_net(dev); |
Daniel Lezcano | a050c33 | 2007-09-12 14:57:09 +0200 | [diff] [blame] | 2127 | lh = dev->dev_list.next; |
| 2128 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); |
| 2129 | } |
| 2130 | |
Eric Dumazet | ce81b76 | 2009-11-11 17:34:30 +0000 | [diff] [blame] | 2131 | static inline struct net_device *next_net_device_rcu(struct net_device *dev) |
| 2132 | { |
| 2133 | struct list_head *lh; |
| 2134 | struct net *net; |
| 2135 | |
| 2136 | net = dev_net(dev); |
Eric Dumazet | ccf4343 | 2011-01-26 18:08:02 +0000 | [diff] [blame] | 2137 | lh = rcu_dereference(list_next_rcu(&dev->dev_list)); |
Eric Dumazet | ce81b76 | 2009-11-11 17:34:30 +0000 | [diff] [blame] | 2138 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); |
| 2139 | } |
| 2140 | |
Daniel Lezcano | a050c33 | 2007-09-12 14:57:09 +0200 | [diff] [blame] | 2141 | static inline struct net_device *first_net_device(struct net *net) |
| 2142 | { |
| 2143 | return list_empty(&net->dev_base_head) ? NULL : |
| 2144 | net_device_entry(net->dev_base_head.next); |
| 2145 | } |
Pavel Emelianov | 7562f87 | 2007-05-03 15:13:45 -0700 | [diff] [blame] | 2146 | |
Eric Dumazet | ccf4343 | 2011-01-26 18:08:02 +0000 | [diff] [blame] | 2147 | static inline struct net_device *first_net_device_rcu(struct net *net) |
| 2148 | { |
| 2149 | struct list_head *lh = rcu_dereference(list_next_rcu(&net->dev_base_head)); |
| 2150 | |
| 2151 | return lh == &net->dev_base_head ? NULL : net_device_entry(lh); |
| 2152 | } |
| 2153 | |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 2154 | int netdev_boot_setup_check(struct net_device *dev); |
| 2155 | unsigned long netdev_boot_base(const char *prefix, int unit); |
| 2156 | struct net_device *dev_getbyhwaddr_rcu(struct net *net, unsigned short type, |
| 2157 | const char *hwaddr); |
| 2158 | struct net_device *dev_getfirstbyhwtype(struct net *net, unsigned short type); |
| 2159 | struct net_device *__dev_getfirstbyhwtype(struct net *net, unsigned short type); |
| 2160 | void dev_add_pack(struct packet_type *pt); |
| 2161 | void dev_remove_pack(struct packet_type *pt); |
| 2162 | void __dev_remove_pack(struct packet_type *pt); |
| 2163 | void dev_add_offload(struct packet_offload *po); |
| 2164 | void dev_remove_offload(struct packet_offload *po); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2165 | |
Nicolas Dichtel | a54acb3 | 2015-04-02 17:07:00 +0200 | [diff] [blame] | 2166 | int dev_get_iflink(const struct net_device *dev); |
WANG Cong | 6c55549 | 2014-09-11 15:35:09 -0700 | [diff] [blame] | 2167 | struct net_device *__dev_get_by_flags(struct net *net, unsigned short flags, |
| 2168 | unsigned short mask); |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 2169 | struct net_device *dev_get_by_name(struct net *net, const char *name); |
| 2170 | struct net_device *dev_get_by_name_rcu(struct net *net, const char *name); |
| 2171 | struct net_device *__dev_get_by_name(struct net *net, const char *name); |
| 2172 | int dev_alloc_name(struct net_device *dev, const char *name); |
| 2173 | int dev_open(struct net_device *dev); |
| 2174 | int dev_close(struct net_device *dev); |
David S. Miller | 99c4a26 | 2015-03-18 22:52:33 -0400 | [diff] [blame] | 2175 | int dev_close_many(struct list_head *head, bool unlink); |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 2176 | void dev_disable_lro(struct net_device *dev); |
David Miller | 7026b1d | 2015-04-05 22:19:04 -0400 | [diff] [blame] | 2177 | int dev_loopback_xmit(struct sock *sk, struct sk_buff *newskb); |
| 2178 | int dev_queue_xmit_sk(struct sock *sk, struct sk_buff *skb); |
| 2179 | static inline int dev_queue_xmit(struct sk_buff *skb) |
| 2180 | { |
| 2181 | return dev_queue_xmit_sk(skb->sk, skb); |
| 2182 | } |
Jason Wang | f663dd9 | 2014-01-10 16:18:26 +0800 | [diff] [blame] | 2183 | int dev_queue_xmit_accel(struct sk_buff *skb, void *accel_priv); |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 2184 | int register_netdevice(struct net_device *dev); |
| 2185 | void unregister_netdevice_queue(struct net_device *dev, struct list_head *head); |
| 2186 | void unregister_netdevice_many(struct list_head *head); |
Eric Dumazet | 44a0873 | 2009-10-27 07:03:04 +0000 | [diff] [blame] | 2187 | static inline void unregister_netdevice(struct net_device *dev) |
| 2188 | { |
| 2189 | unregister_netdevice_queue(dev, NULL); |
| 2190 | } |
| 2191 | |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 2192 | int netdev_refcnt_read(const struct net_device *dev); |
| 2193 | void free_netdev(struct net_device *dev); |
Eric Dumazet | 74d332c | 2013-10-30 13:10:44 -0700 | [diff] [blame] | 2194 | void netdev_freemem(struct net_device *dev); |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 2195 | void synchronize_net(void); |
| 2196 | int init_dummy_netdev(struct net_device *dev); |
Benjamin Herrenschmidt | 937f1ba | 2009-01-14 21:05:05 -0800 | [diff] [blame] | 2197 | |
hannes@stressinduktion.org | f60e599 | 2015-04-01 17:07:44 +0200 | [diff] [blame] | 2198 | DECLARE_PER_CPU(int, xmit_recursion); |
| 2199 | static inline int dev_recursion_level(void) |
| 2200 | { |
| 2201 | return this_cpu_read(xmit_recursion); |
| 2202 | } |
| 2203 | |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 2204 | struct net_device *dev_get_by_index(struct net *net, int ifindex); |
| 2205 | struct net_device *__dev_get_by_index(struct net *net, int ifindex); |
| 2206 | struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex); |
| 2207 | int netdev_get_name(struct net *net, char *name, int ifindex); |
| 2208 | int dev_restart(struct net_device *dev); |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 2209 | int skb_gro_receive(struct sk_buff **head, struct sk_buff *skb); |
Herbert Xu | 8691173 | 2009-01-29 14:19:50 +0000 | [diff] [blame] | 2210 | |
| 2211 | static inline unsigned int skb_gro_offset(const struct sk_buff *skb) |
| 2212 | { |
| 2213 | return NAPI_GRO_CB(skb)->data_offset; |
| 2214 | } |
| 2215 | |
| 2216 | static inline unsigned int skb_gro_len(const struct sk_buff *skb) |
| 2217 | { |
| 2218 | return skb->len - NAPI_GRO_CB(skb)->data_offset; |
| 2219 | } |
| 2220 | |
| 2221 | static inline void skb_gro_pull(struct sk_buff *skb, unsigned int len) |
| 2222 | { |
| 2223 | NAPI_GRO_CB(skb)->data_offset += len; |
| 2224 | } |
| 2225 | |
Herbert Xu | a5b1cf2 | 2009-05-26 18:50:28 +0000 | [diff] [blame] | 2226 | static inline void *skb_gro_header_fast(struct sk_buff *skb, |
| 2227 | unsigned int offset) |
Herbert Xu | 8691173 | 2009-01-29 14:19:50 +0000 | [diff] [blame] | 2228 | { |
Herbert Xu | 78a478d | 2009-05-26 18:50:21 +0000 | [diff] [blame] | 2229 | return NAPI_GRO_CB(skb)->frag0 + offset; |
Herbert Xu | 8691173 | 2009-01-29 14:19:50 +0000 | [diff] [blame] | 2230 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2231 | |
Herbert Xu | a5b1cf2 | 2009-05-26 18:50:28 +0000 | [diff] [blame] | 2232 | static inline int skb_gro_header_hard(struct sk_buff *skb, unsigned int hlen) |
| 2233 | { |
| 2234 | return NAPI_GRO_CB(skb)->frag0_len < hlen; |
| 2235 | } |
| 2236 | |
| 2237 | static inline void *skb_gro_header_slow(struct sk_buff *skb, unsigned int hlen, |
| 2238 | unsigned int offset) |
| 2239 | { |
Herbert Xu | 17dd759 | 2011-07-27 06:16:28 -0700 | [diff] [blame] | 2240 | if (!pskb_may_pull(skb, hlen)) |
| 2241 | return NULL; |
| 2242 | |
Herbert Xu | a5b1cf2 | 2009-05-26 18:50:28 +0000 | [diff] [blame] | 2243 | NAPI_GRO_CB(skb)->frag0 = NULL; |
| 2244 | NAPI_GRO_CB(skb)->frag0_len = 0; |
Herbert Xu | 17dd759 | 2011-07-27 06:16:28 -0700 | [diff] [blame] | 2245 | return skb->data + offset; |
Herbert Xu | a5b1cf2 | 2009-05-26 18:50:28 +0000 | [diff] [blame] | 2246 | } |
| 2247 | |
Herbert Xu | 36e7b1b | 2009-04-27 05:44:45 -0700 | [diff] [blame] | 2248 | static inline void *skb_gro_network_header(struct sk_buff *skb) |
| 2249 | { |
Herbert Xu | 78d3fd0 | 2009-05-26 18:50:23 +0000 | [diff] [blame] | 2250 | return (NAPI_GRO_CB(skb)->frag0 ?: skb->data) + |
| 2251 | skb_network_offset(skb); |
Herbert Xu | 36e7b1b | 2009-04-27 05:44:45 -0700 | [diff] [blame] | 2252 | } |
| 2253 | |
Jerry Chu | bf5a755 | 2014-01-07 10:23:19 -0800 | [diff] [blame] | 2254 | static inline void skb_gro_postpull_rcsum(struct sk_buff *skb, |
| 2255 | const void *start, unsigned int len) |
| 2256 | { |
Tom Herbert | 573e8fc | 2014-08-22 13:33:47 -0700 | [diff] [blame] | 2257 | if (NAPI_GRO_CB(skb)->csum_valid) |
Jerry Chu | bf5a755 | 2014-01-07 10:23:19 -0800 | [diff] [blame] | 2258 | NAPI_GRO_CB(skb)->csum = csum_sub(NAPI_GRO_CB(skb)->csum, |
| 2259 | csum_partial(start, len, 0)); |
| 2260 | } |
| 2261 | |
Tom Herbert | 573e8fc | 2014-08-22 13:33:47 -0700 | [diff] [blame] | 2262 | /* GRO checksum functions. These are logical equivalents of the normal |
| 2263 | * checksum functions (in skbuff.h) except that they operate on the GRO |
| 2264 | * offsets and fields in sk_buff. |
| 2265 | */ |
| 2266 | |
| 2267 | __sum16 __skb_gro_checksum_complete(struct sk_buff *skb); |
| 2268 | |
Tom Herbert | 15e2396 | 2015-02-10 16:30:31 -0800 | [diff] [blame] | 2269 | static inline bool skb_at_gro_remcsum_start(struct sk_buff *skb) |
| 2270 | { |
| 2271 | return (NAPI_GRO_CB(skb)->gro_remcsum_start - skb_headroom(skb) == |
| 2272 | skb_gro_offset(skb)); |
| 2273 | } |
| 2274 | |
Tom Herbert | 573e8fc | 2014-08-22 13:33:47 -0700 | [diff] [blame] | 2275 | static inline bool __skb_gro_checksum_validate_needed(struct sk_buff *skb, |
| 2276 | bool zero_okay, |
| 2277 | __sum16 check) |
| 2278 | { |
Tom Herbert | 6edec0e | 2015-02-10 16:30:28 -0800 | [diff] [blame] | 2279 | return ((skb->ip_summed != CHECKSUM_PARTIAL || |
| 2280 | skb_checksum_start_offset(skb) < |
| 2281 | skb_gro_offset(skb)) && |
Tom Herbert | 15e2396 | 2015-02-10 16:30:31 -0800 | [diff] [blame] | 2282 | !skb_at_gro_remcsum_start(skb) && |
Tom Herbert | 662880f | 2014-08-27 21:26:56 -0700 | [diff] [blame] | 2283 | NAPI_GRO_CB(skb)->csum_cnt == 0 && |
Tom Herbert | 573e8fc | 2014-08-22 13:33:47 -0700 | [diff] [blame] | 2284 | (!zero_okay || check)); |
| 2285 | } |
| 2286 | |
| 2287 | static inline __sum16 __skb_gro_checksum_validate_complete(struct sk_buff *skb, |
| 2288 | __wsum psum) |
| 2289 | { |
| 2290 | if (NAPI_GRO_CB(skb)->csum_valid && |
| 2291 | !csum_fold(csum_add(psum, NAPI_GRO_CB(skb)->csum))) |
| 2292 | return 0; |
| 2293 | |
| 2294 | NAPI_GRO_CB(skb)->csum = psum; |
| 2295 | |
| 2296 | return __skb_gro_checksum_complete(skb); |
| 2297 | } |
| 2298 | |
Tom Herbert | 573e8fc | 2014-08-22 13:33:47 -0700 | [diff] [blame] | 2299 | static inline void skb_gro_incr_csum_unnecessary(struct sk_buff *skb) |
| 2300 | { |
Tom Herbert | 662880f | 2014-08-27 21:26:56 -0700 | [diff] [blame] | 2301 | if (NAPI_GRO_CB(skb)->csum_cnt > 0) { |
| 2302 | /* Consume a checksum from CHECKSUM_UNNECESSARY */ |
| 2303 | NAPI_GRO_CB(skb)->csum_cnt--; |
| 2304 | } else { |
| 2305 | /* Update skb for CHECKSUM_UNNECESSARY and csum_level when we |
| 2306 | * verified a new top level checksum or an encapsulated one |
| 2307 | * during GRO. This saves work if we fallback to normal path. |
| 2308 | */ |
| 2309 | __skb_incr_checksum_unnecessary(skb); |
Tom Herbert | 573e8fc | 2014-08-22 13:33:47 -0700 | [diff] [blame] | 2310 | } |
| 2311 | } |
| 2312 | |
| 2313 | #define __skb_gro_checksum_validate(skb, proto, zero_okay, check, \ |
| 2314 | compute_pseudo) \ |
| 2315 | ({ \ |
| 2316 | __sum16 __ret = 0; \ |
| 2317 | if (__skb_gro_checksum_validate_needed(skb, zero_okay, check)) \ |
| 2318 | __ret = __skb_gro_checksum_validate_complete(skb, \ |
| 2319 | compute_pseudo(skb, proto)); \ |
Tom Herbert | 5a21232 | 2014-08-31 15:12:41 -0700 | [diff] [blame] | 2320 | if (__ret) \ |
| 2321 | __skb_mark_checksum_bad(skb); \ |
| 2322 | else \ |
Tom Herbert | 573e8fc | 2014-08-22 13:33:47 -0700 | [diff] [blame] | 2323 | skb_gro_incr_csum_unnecessary(skb); \ |
| 2324 | __ret; \ |
| 2325 | }) |
| 2326 | |
| 2327 | #define skb_gro_checksum_validate(skb, proto, compute_pseudo) \ |
| 2328 | __skb_gro_checksum_validate(skb, proto, false, 0, compute_pseudo) |
| 2329 | |
| 2330 | #define skb_gro_checksum_validate_zero_check(skb, proto, check, \ |
| 2331 | compute_pseudo) \ |
| 2332 | __skb_gro_checksum_validate(skb, proto, true, check, compute_pseudo) |
| 2333 | |
| 2334 | #define skb_gro_checksum_simple_validate(skb) \ |
| 2335 | __skb_gro_checksum_validate(skb, 0, false, 0, null_compute_pseudo) |
| 2336 | |
Tom Herbert | d96535a | 2014-08-31 15:12:42 -0700 | [diff] [blame] | 2337 | static inline bool __skb_gro_checksum_convert_check(struct sk_buff *skb) |
| 2338 | { |
| 2339 | return (NAPI_GRO_CB(skb)->csum_cnt == 0 && |
| 2340 | !NAPI_GRO_CB(skb)->csum_valid); |
| 2341 | } |
| 2342 | |
| 2343 | static inline void __skb_gro_checksum_convert(struct sk_buff *skb, |
| 2344 | __sum16 check, __wsum pseudo) |
| 2345 | { |
| 2346 | NAPI_GRO_CB(skb)->csum = ~pseudo; |
| 2347 | NAPI_GRO_CB(skb)->csum_valid = 1; |
| 2348 | } |
| 2349 | |
| 2350 | #define skb_gro_checksum_try_convert(skb, proto, check, compute_pseudo) \ |
| 2351 | do { \ |
| 2352 | if (__skb_gro_checksum_convert_check(skb)) \ |
| 2353 | __skb_gro_checksum_convert(skb, check, \ |
| 2354 | compute_pseudo(skb, proto)); \ |
| 2355 | } while (0) |
| 2356 | |
Tom Herbert | 26c4f7d | 2015-02-10 16:30:27 -0800 | [diff] [blame] | 2357 | struct gro_remcsum { |
| 2358 | int offset; |
| 2359 | __wsum delta; |
| 2360 | }; |
| 2361 | |
| 2362 | static inline void skb_gro_remcsum_init(struct gro_remcsum *grc) |
| 2363 | { |
Geert Uytterhoeven | 846cd66 | 2015-02-18 11:38:06 +0100 | [diff] [blame] | 2364 | grc->offset = 0; |
Tom Herbert | 26c4f7d | 2015-02-10 16:30:27 -0800 | [diff] [blame] | 2365 | grc->delta = 0; |
| 2366 | } |
| 2367 | |
Tom Herbert | dcdc899 | 2015-02-02 16:07:34 -0800 | [diff] [blame] | 2368 | static inline void skb_gro_remcsum_process(struct sk_buff *skb, void *ptr, |
Tom Herbert | 26c4f7d | 2015-02-10 16:30:27 -0800 | [diff] [blame] | 2369 | int start, int offset, |
Tom Herbert | 15e2396 | 2015-02-10 16:30:31 -0800 | [diff] [blame] | 2370 | struct gro_remcsum *grc, |
| 2371 | bool nopartial) |
Tom Herbert | dcdc899 | 2015-02-02 16:07:34 -0800 | [diff] [blame] | 2372 | { |
| 2373 | __wsum delta; |
| 2374 | |
| 2375 | BUG_ON(!NAPI_GRO_CB(skb)->csum_valid); |
| 2376 | |
Tom Herbert | 15e2396 | 2015-02-10 16:30:31 -0800 | [diff] [blame] | 2377 | if (!nopartial) { |
| 2378 | NAPI_GRO_CB(skb)->gro_remcsum_start = |
| 2379 | ((unsigned char *)ptr + start) - skb->head; |
| 2380 | return; |
| 2381 | } |
| 2382 | |
Tom Herbert | dcdc899 | 2015-02-02 16:07:34 -0800 | [diff] [blame] | 2383 | delta = remcsum_adjust(ptr, NAPI_GRO_CB(skb)->csum, start, offset); |
| 2384 | |
| 2385 | /* Adjust skb->csum since we changed the packet */ |
Tom Herbert | dcdc899 | 2015-02-02 16:07:34 -0800 | [diff] [blame] | 2386 | NAPI_GRO_CB(skb)->csum = csum_add(NAPI_GRO_CB(skb)->csum, delta); |
Tom Herbert | 26c4f7d | 2015-02-10 16:30:27 -0800 | [diff] [blame] | 2387 | |
| 2388 | grc->offset = (ptr + offset) - (void *)skb->head; |
| 2389 | grc->delta = delta; |
Tom Herbert | dcdc899 | 2015-02-02 16:07:34 -0800 | [diff] [blame] | 2390 | } |
| 2391 | |
Tom Herbert | 26c4f7d | 2015-02-10 16:30:27 -0800 | [diff] [blame] | 2392 | static inline void skb_gro_remcsum_cleanup(struct sk_buff *skb, |
| 2393 | struct gro_remcsum *grc) |
| 2394 | { |
| 2395 | if (!grc->delta) |
| 2396 | return; |
| 2397 | |
| 2398 | remcsum_unadjust((__sum16 *)(skb->head + grc->offset), grc->delta); |
| 2399 | } |
Tom Herbert | dcdc899 | 2015-02-02 16:07:34 -0800 | [diff] [blame] | 2400 | |
Stephen Hemminger | 0c4e858 | 2007-10-09 01:36:32 -0700 | [diff] [blame] | 2401 | static inline int dev_hard_header(struct sk_buff *skb, struct net_device *dev, |
| 2402 | unsigned short type, |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 2403 | const void *daddr, const void *saddr, |
Eric Dumazet | 95c9617 | 2012-04-15 05:58:06 +0000 | [diff] [blame] | 2404 | unsigned int len) |
Stephen Hemminger | 0c4e858 | 2007-10-09 01:36:32 -0700 | [diff] [blame] | 2405 | { |
Ursula Braun | f1ecfd5 | 2007-10-22 16:16:14 +0200 | [diff] [blame] | 2406 | if (!dev->header_ops || !dev->header_ops->create) |
Stephen Hemminger | 0c4e858 | 2007-10-09 01:36:32 -0700 | [diff] [blame] | 2407 | return 0; |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 2408 | |
| 2409 | return dev->header_ops->create(skb, dev, type, daddr, saddr, len); |
Stephen Hemminger | 0c4e858 | 2007-10-09 01:36:32 -0700 | [diff] [blame] | 2410 | } |
| 2411 | |
Stephen Hemminger | b95cce3 | 2007-09-26 22:13:38 -0700 | [diff] [blame] | 2412 | static inline int dev_parse_header(const struct sk_buff *skb, |
| 2413 | unsigned char *haddr) |
| 2414 | { |
| 2415 | const struct net_device *dev = skb->dev; |
| 2416 | |
Patrick McHardy | 1b83336 | 2007-10-18 05:09:28 -0700 | [diff] [blame] | 2417 | if (!dev->header_ops || !dev->header_ops->parse) |
Stephen Hemminger | b95cce3 | 2007-09-26 22:13:38 -0700 | [diff] [blame] | 2418 | return 0; |
Stephen Hemminger | 3b04ddd | 2007-10-09 01:40:57 -0700 | [diff] [blame] | 2419 | return dev->header_ops->parse(skb, haddr); |
Stephen Hemminger | b95cce3 | 2007-09-26 22:13:38 -0700 | [diff] [blame] | 2420 | } |
| 2421 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2422 | typedef int gifconf_func_t(struct net_device * dev, char __user * bufptr, int len); |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 2423 | int register_gifconf(unsigned int family, gifconf_func_t *gifconf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2424 | static inline int unregister_gifconf(unsigned int family) |
| 2425 | { |
| 2426 | return register_gifconf(family, NULL); |
| 2427 | } |
| 2428 | |
Willem de Bruijn | 99bbc70 | 2013-05-20 04:02:32 +0000 | [diff] [blame] | 2429 | #ifdef CONFIG_NET_FLOW_LIMIT |
Willem de Bruijn | 5f121b9 | 2013-06-13 15:29:38 -0400 | [diff] [blame] | 2430 | #define FLOW_LIMIT_HISTORY (1 << 7) /* must be ^2 and !overflow buckets */ |
Willem de Bruijn | 99bbc70 | 2013-05-20 04:02:32 +0000 | [diff] [blame] | 2431 | struct sd_flow_limit { |
| 2432 | u64 count; |
| 2433 | unsigned int num_buckets; |
| 2434 | unsigned int history_head; |
| 2435 | u16 history[FLOW_LIMIT_HISTORY]; |
| 2436 | u8 buckets[]; |
| 2437 | }; |
| 2438 | |
| 2439 | extern int netdev_flow_limit_table_len; |
| 2440 | #endif /* CONFIG_NET_FLOW_LIMIT */ |
| 2441 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2442 | /* |
Eric Dumazet | 8875127 | 2010-04-19 05:07:33 +0000 | [diff] [blame] | 2443 | * Incoming packets are placed on per-cpu queues |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2444 | */ |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 2445 | struct softnet_data { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2446 | struct list_head poll_list; |
Changli Gao | 6e7676c | 2010-04-27 15:07:33 -0700 | [diff] [blame] | 2447 | struct sk_buff_head process_queue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2448 | |
Changli Gao | dee4287 | 2010-05-02 05:42:16 +0000 | [diff] [blame] | 2449 | /* stats */ |
David S. Miller | cd7b539 | 2010-05-02 22:27:59 -0700 | [diff] [blame] | 2450 | unsigned int processed; |
| 2451 | unsigned int time_squeeze; |
| 2452 | unsigned int cpu_collision; |
| 2453 | unsigned int received_rps; |
Changli Gao | fd793d8 | 2010-04-15 00:16:59 -0700 | [diff] [blame] | 2454 | #ifdef CONFIG_RPS |
Eric Dumazet | 8875127 | 2010-04-19 05:07:33 +0000 | [diff] [blame] | 2455 | struct softnet_data *rps_ipi_list; |
Eric Dumazet | 4cdb1e2 | 2014-11-02 06:00:12 -0800 | [diff] [blame] | 2456 | #endif |
| 2457 | #ifdef CONFIG_NET_FLOW_LIMIT |
| 2458 | struct sd_flow_limit __rcu *flow_limit; |
| 2459 | #endif |
| 2460 | struct Qdisc *output_queue; |
| 2461 | struct Qdisc **output_queue_tailp; |
| 2462 | struct sk_buff *completion_queue; |
Eric Dumazet | 8875127 | 2010-04-19 05:07:33 +0000 | [diff] [blame] | 2463 | |
Eric Dumazet | 4cdb1e2 | 2014-11-02 06:00:12 -0800 | [diff] [blame] | 2464 | #ifdef CONFIG_RPS |
Eric Dumazet | 8875127 | 2010-04-19 05:07:33 +0000 | [diff] [blame] | 2465 | /* Elements below can be accessed between CPUs for RPS */ |
Tom Herbert | 0a9627f | 2010-03-16 08:03:29 +0000 | [diff] [blame] | 2466 | struct call_single_data csd ____cacheline_aligned_in_smp; |
Eric Dumazet | 8875127 | 2010-04-19 05:07:33 +0000 | [diff] [blame] | 2467 | struct softnet_data *rps_ipi_next; |
| 2468 | unsigned int cpu; |
Tom Herbert | fec5e65 | 2010-04-16 16:01:27 -0700 | [diff] [blame] | 2469 | unsigned int input_queue_head; |
Tom Herbert | 76cc8b1 | 2010-05-20 18:37:59 +0000 | [diff] [blame] | 2470 | unsigned int input_queue_tail; |
Tom Herbert | 1e94d72 | 2010-03-18 17:45:44 -0700 | [diff] [blame] | 2471 | #endif |
Eric Dumazet | 95c9617 | 2012-04-15 05:58:06 +0000 | [diff] [blame] | 2472 | unsigned int dropped; |
Tom Herbert | 0a9627f | 2010-03-16 08:03:29 +0000 | [diff] [blame] | 2473 | struct sk_buff_head input_pkt_queue; |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 2474 | struct napi_struct backlog; |
Willem de Bruijn | 99bbc70 | 2013-05-20 04:02:32 +0000 | [diff] [blame] | 2475 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2476 | }; |
| 2477 | |
Tom Herbert | 76cc8b1 | 2010-05-20 18:37:59 +0000 | [diff] [blame] | 2478 | static inline void input_queue_head_incr(struct softnet_data *sd) |
Tom Herbert | fec5e65 | 2010-04-16 16:01:27 -0700 | [diff] [blame] | 2479 | { |
| 2480 | #ifdef CONFIG_RPS |
Tom Herbert | 76cc8b1 | 2010-05-20 18:37:59 +0000 | [diff] [blame] | 2481 | sd->input_queue_head++; |
| 2482 | #endif |
| 2483 | } |
| 2484 | |
| 2485 | static inline void input_queue_tail_incr_save(struct softnet_data *sd, |
| 2486 | unsigned int *qtail) |
| 2487 | { |
| 2488 | #ifdef CONFIG_RPS |
| 2489 | *qtail = ++sd->input_queue_tail; |
Tom Herbert | fec5e65 | 2010-04-16 16:01:27 -0700 | [diff] [blame] | 2490 | #endif |
| 2491 | } |
| 2492 | |
Tom Herbert | 0a9627f | 2010-03-16 08:03:29 +0000 | [diff] [blame] | 2493 | DECLARE_PER_CPU_ALIGNED(struct softnet_data, softnet_data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2494 | |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 2495 | void __netif_schedule(struct Qdisc *q); |
John Fastabend | 46e5da4 | 2014-09-12 20:04:52 -0700 | [diff] [blame] | 2496 | void netif_schedule_queue(struct netdev_queue *txq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2497 | |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 2498 | static inline void netif_tx_schedule_all(struct net_device *dev) |
| 2499 | { |
| 2500 | unsigned int i; |
| 2501 | |
| 2502 | for (i = 0; i < dev->num_tx_queues; i++) |
| 2503 | netif_schedule_queue(netdev_get_tx_queue(dev, i)); |
| 2504 | } |
| 2505 | |
Dave Jones | d29f749 | 2008-07-22 14:09:06 -0700 | [diff] [blame] | 2506 | static inline void netif_tx_start_queue(struct netdev_queue *dev_queue) |
| 2507 | { |
Tom Herbert | 73466498 | 2011-11-28 16:32:44 +0000 | [diff] [blame] | 2508 | clear_bit(__QUEUE_STATE_DRV_XOFF, &dev_queue->state); |
Dave Jones | d29f749 | 2008-07-22 14:09:06 -0700 | [diff] [blame] | 2509 | } |
| 2510 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 2511 | /** |
| 2512 | * netif_start_queue - allow transmit |
| 2513 | * @dev: network device |
| 2514 | * |
| 2515 | * Allow upper layers to call the device hard_start_xmit routine. |
| 2516 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2517 | static inline void netif_start_queue(struct net_device *dev) |
| 2518 | { |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 2519 | netif_tx_start_queue(netdev_get_tx_queue(dev, 0)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2520 | } |
| 2521 | |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 2522 | static inline void netif_tx_start_all_queues(struct net_device *dev) |
| 2523 | { |
| 2524 | unsigned int i; |
| 2525 | |
| 2526 | for (i = 0; i < dev->num_tx_queues; i++) { |
| 2527 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); |
| 2528 | netif_tx_start_queue(txq); |
| 2529 | } |
| 2530 | } |
| 2531 | |
John Fastabend | 46e5da4 | 2014-09-12 20:04:52 -0700 | [diff] [blame] | 2532 | void netif_tx_wake_queue(struct netdev_queue *dev_queue); |
David S. Miller | 79d1638 | 2008-07-08 23:14:46 -0700 | [diff] [blame] | 2533 | |
Dave Jones | d29f749 | 2008-07-22 14:09:06 -0700 | [diff] [blame] | 2534 | /** |
| 2535 | * netif_wake_queue - restart transmit |
| 2536 | * @dev: network device |
| 2537 | * |
| 2538 | * Allow upper layers to call the device hard_start_xmit routine. |
| 2539 | * Used for flow control when transmit resources are available. |
| 2540 | */ |
David S. Miller | 79d1638 | 2008-07-08 23:14:46 -0700 | [diff] [blame] | 2541 | static inline void netif_wake_queue(struct net_device *dev) |
| 2542 | { |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 2543 | netif_tx_wake_queue(netdev_get_tx_queue(dev, 0)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2544 | } |
| 2545 | |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 2546 | static inline void netif_tx_wake_all_queues(struct net_device *dev) |
| 2547 | { |
| 2548 | unsigned int i; |
| 2549 | |
| 2550 | for (i = 0; i < dev->num_tx_queues; i++) { |
| 2551 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); |
| 2552 | netif_tx_wake_queue(txq); |
| 2553 | } |
| 2554 | } |
| 2555 | |
Dave Jones | d29f749 | 2008-07-22 14:09:06 -0700 | [diff] [blame] | 2556 | static inline void netif_tx_stop_queue(struct netdev_queue *dev_queue) |
| 2557 | { |
Guillaume Chazarain | 18543a6 | 2010-11-06 06:39:32 +0000 | [diff] [blame] | 2558 | if (WARN_ON(!dev_queue)) { |
Joe Perches | 256ee43 | 2011-03-01 07:06:12 +0000 | [diff] [blame] | 2559 | pr_info("netif_stop_queue() cannot be called before register_netdev()\n"); |
Guillaume Chazarain | 18543a6 | 2010-11-06 06:39:32 +0000 | [diff] [blame] | 2560 | return; |
| 2561 | } |
Tom Herbert | 73466498 | 2011-11-28 16:32:44 +0000 | [diff] [blame] | 2562 | set_bit(__QUEUE_STATE_DRV_XOFF, &dev_queue->state); |
Dave Jones | d29f749 | 2008-07-22 14:09:06 -0700 | [diff] [blame] | 2563 | } |
| 2564 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 2565 | /** |
| 2566 | * netif_stop_queue - stop transmitted packets |
| 2567 | * @dev: network device |
| 2568 | * |
| 2569 | * Stop upper layers calling the device hard_start_xmit routine. |
| 2570 | * Used for flow control when transmit resources are unavailable. |
| 2571 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2572 | static inline void netif_stop_queue(struct net_device *dev) |
| 2573 | { |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 2574 | netif_tx_stop_queue(netdev_get_tx_queue(dev, 0)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2575 | } |
| 2576 | |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 2577 | static inline void netif_tx_stop_all_queues(struct net_device *dev) |
| 2578 | { |
| 2579 | unsigned int i; |
| 2580 | |
| 2581 | for (i = 0; i < dev->num_tx_queues; i++) { |
| 2582 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); |
| 2583 | netif_tx_stop_queue(txq); |
| 2584 | } |
| 2585 | } |
| 2586 | |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 2587 | static inline bool netif_tx_queue_stopped(const struct netdev_queue *dev_queue) |
Dave Jones | d29f749 | 2008-07-22 14:09:06 -0700 | [diff] [blame] | 2588 | { |
Tom Herbert | 73466498 | 2011-11-28 16:32:44 +0000 | [diff] [blame] | 2589 | return test_bit(__QUEUE_STATE_DRV_XOFF, &dev_queue->state); |
Dave Jones | d29f749 | 2008-07-22 14:09:06 -0700 | [diff] [blame] | 2590 | } |
| 2591 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 2592 | /** |
| 2593 | * netif_queue_stopped - test if transmit queue is flowblocked |
| 2594 | * @dev: network device |
| 2595 | * |
| 2596 | * Test if transmit queue on device is currently unable to send. |
| 2597 | */ |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 2598 | static inline bool netif_queue_stopped(const struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2599 | { |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 2600 | return netif_tx_queue_stopped(netdev_get_tx_queue(dev, 0)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2601 | } |
| 2602 | |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 2603 | static inline bool netif_xmit_stopped(const struct netdev_queue *dev_queue) |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 2604 | { |
Tom Herbert | 73466498 | 2011-11-28 16:32:44 +0000 | [diff] [blame] | 2605 | return dev_queue->state & QUEUE_STATE_ANY_XOFF; |
| 2606 | } |
| 2607 | |
Daniel Borkmann | 8e2f1a6 | 2014-04-02 20:52:57 +0200 | [diff] [blame] | 2608 | static inline bool |
| 2609 | netif_xmit_frozen_or_stopped(const struct netdev_queue *dev_queue) |
Tom Herbert | 73466498 | 2011-11-28 16:32:44 +0000 | [diff] [blame] | 2610 | { |
| 2611 | return dev_queue->state & QUEUE_STATE_ANY_XOFF_OR_FROZEN; |
| 2612 | } |
| 2613 | |
Daniel Borkmann | 8e2f1a6 | 2014-04-02 20:52:57 +0200 | [diff] [blame] | 2614 | static inline bool |
| 2615 | netif_xmit_frozen_or_drv_stopped(const struct netdev_queue *dev_queue) |
| 2616 | { |
| 2617 | return dev_queue->state & QUEUE_STATE_DRV_XOFF_OR_FROZEN; |
| 2618 | } |
| 2619 | |
Eric Dumazet | 5351145 | 2014-10-08 08:19:27 -0700 | [diff] [blame] | 2620 | /** |
| 2621 | * netdev_txq_bql_enqueue_prefetchw - prefetch bql data for write |
| 2622 | * @dev_queue: pointer to transmit queue |
| 2623 | * |
| 2624 | * BQL enabled drivers might use this helper in their ndo_start_xmit(), |
| 2625 | * to give appropriate hint to the cpu. |
| 2626 | */ |
| 2627 | static inline void netdev_txq_bql_enqueue_prefetchw(struct netdev_queue *dev_queue) |
| 2628 | { |
| 2629 | #ifdef CONFIG_BQL |
| 2630 | prefetchw(&dev_queue->dql.num_queued); |
| 2631 | #endif |
| 2632 | } |
| 2633 | |
| 2634 | /** |
| 2635 | * netdev_txq_bql_complete_prefetchw - prefetch bql data for write |
| 2636 | * @dev_queue: pointer to transmit queue |
| 2637 | * |
| 2638 | * BQL enabled drivers might use this helper in their TX completion path, |
| 2639 | * to give appropriate hint to the cpu. |
| 2640 | */ |
| 2641 | static inline void netdev_txq_bql_complete_prefetchw(struct netdev_queue *dev_queue) |
| 2642 | { |
| 2643 | #ifdef CONFIG_BQL |
| 2644 | prefetchw(&dev_queue->dql.limit); |
| 2645 | #endif |
| 2646 | } |
| 2647 | |
Tom Herbert | c5d67bd | 2011-11-28 16:32:52 +0000 | [diff] [blame] | 2648 | static inline void netdev_tx_sent_queue(struct netdev_queue *dev_queue, |
| 2649 | unsigned int bytes) |
| 2650 | { |
Tom Herbert | 114cf58 | 2011-11-28 16:33:09 +0000 | [diff] [blame] | 2651 | #ifdef CONFIG_BQL |
| 2652 | dql_queued(&dev_queue->dql, bytes); |
Alexander Duyck | b37c0fb | 2012-02-07 02:29:06 +0000 | [diff] [blame] | 2653 | |
| 2654 | if (likely(dql_avail(&dev_queue->dql) >= 0)) |
| 2655 | return; |
| 2656 | |
| 2657 | set_bit(__QUEUE_STATE_STACK_XOFF, &dev_queue->state); |
| 2658 | |
| 2659 | /* |
| 2660 | * The XOFF flag must be set before checking the dql_avail below, |
| 2661 | * because in netdev_tx_completed_queue we update the dql_completed |
| 2662 | * before checking the XOFF flag. |
| 2663 | */ |
| 2664 | smp_mb(); |
| 2665 | |
| 2666 | /* check again in case another CPU has just made room avail */ |
| 2667 | if (unlikely(dql_avail(&dev_queue->dql) >= 0)) |
| 2668 | clear_bit(__QUEUE_STATE_STACK_XOFF, &dev_queue->state); |
Tom Herbert | 114cf58 | 2011-11-28 16:33:09 +0000 | [diff] [blame] | 2669 | #endif |
Tom Herbert | c5d67bd | 2011-11-28 16:32:52 +0000 | [diff] [blame] | 2670 | } |
| 2671 | |
Florian Fainelli | 0042d0c | 2013-09-06 16:58:00 +0100 | [diff] [blame] | 2672 | /** |
| 2673 | * netdev_sent_queue - report the number of bytes queued to hardware |
| 2674 | * @dev: network device |
| 2675 | * @bytes: number of bytes queued to the hardware device queue |
| 2676 | * |
| 2677 | * Report the number of bytes queued for sending/completion to the network |
| 2678 | * device hardware queue. @bytes should be a good approximation and should |
| 2679 | * exactly match netdev_completed_queue() @bytes |
| 2680 | */ |
Tom Herbert | c5d67bd | 2011-11-28 16:32:52 +0000 | [diff] [blame] | 2681 | static inline void netdev_sent_queue(struct net_device *dev, unsigned int bytes) |
| 2682 | { |
| 2683 | netdev_tx_sent_queue(netdev_get_tx_queue(dev, 0), bytes); |
| 2684 | } |
| 2685 | |
| 2686 | static inline void netdev_tx_completed_queue(struct netdev_queue *dev_queue, |
Eric Dumazet | 95c9617 | 2012-04-15 05:58:06 +0000 | [diff] [blame] | 2687 | unsigned int pkts, unsigned int bytes) |
Tom Herbert | c5d67bd | 2011-11-28 16:32:52 +0000 | [diff] [blame] | 2688 | { |
Tom Herbert | 114cf58 | 2011-11-28 16:33:09 +0000 | [diff] [blame] | 2689 | #ifdef CONFIG_BQL |
Alexander Duyck | b37c0fb | 2012-02-07 02:29:06 +0000 | [diff] [blame] | 2690 | if (unlikely(!bytes)) |
| 2691 | return; |
| 2692 | |
| 2693 | dql_completed(&dev_queue->dql, bytes); |
| 2694 | |
| 2695 | /* |
| 2696 | * Without the memory barrier there is a small possiblity that |
| 2697 | * netdev_tx_sent_queue will miss the update and cause the queue to |
| 2698 | * be stopped forever |
| 2699 | */ |
| 2700 | smp_mb(); |
| 2701 | |
| 2702 | if (dql_avail(&dev_queue->dql) < 0) |
| 2703 | return; |
| 2704 | |
| 2705 | if (test_and_clear_bit(__QUEUE_STATE_STACK_XOFF, &dev_queue->state)) |
| 2706 | netif_schedule_queue(dev_queue); |
Tom Herbert | 114cf58 | 2011-11-28 16:33:09 +0000 | [diff] [blame] | 2707 | #endif |
Tom Herbert | c5d67bd | 2011-11-28 16:32:52 +0000 | [diff] [blame] | 2708 | } |
| 2709 | |
Florian Fainelli | 0042d0c | 2013-09-06 16:58:00 +0100 | [diff] [blame] | 2710 | /** |
| 2711 | * netdev_completed_queue - report bytes and packets completed by device |
| 2712 | * @dev: network device |
| 2713 | * @pkts: actual number of packets sent over the medium |
| 2714 | * @bytes: actual number of bytes sent over the medium |
| 2715 | * |
| 2716 | * Report the number of bytes and packets transmitted by the network device |
| 2717 | * hardware queue over the physical medium, @bytes must exactly match the |
| 2718 | * @bytes amount passed to netdev_sent_queue() |
| 2719 | */ |
Tom Herbert | c5d67bd | 2011-11-28 16:32:52 +0000 | [diff] [blame] | 2720 | static inline void netdev_completed_queue(struct net_device *dev, |
Eric Dumazet | 95c9617 | 2012-04-15 05:58:06 +0000 | [diff] [blame] | 2721 | unsigned int pkts, unsigned int bytes) |
Tom Herbert | c5d67bd | 2011-11-28 16:32:52 +0000 | [diff] [blame] | 2722 | { |
| 2723 | netdev_tx_completed_queue(netdev_get_tx_queue(dev, 0), pkts, bytes); |
| 2724 | } |
| 2725 | |
| 2726 | static inline void netdev_tx_reset_queue(struct netdev_queue *q) |
| 2727 | { |
Tom Herbert | 114cf58 | 2011-11-28 16:33:09 +0000 | [diff] [blame] | 2728 | #ifdef CONFIG_BQL |
Alexander Duyck | 5c49035 | 2012-02-07 02:29:01 +0000 | [diff] [blame] | 2729 | clear_bit(__QUEUE_STATE_STACK_XOFF, &q->state); |
Tom Herbert | 114cf58 | 2011-11-28 16:33:09 +0000 | [diff] [blame] | 2730 | dql_reset(&q->dql); |
| 2731 | #endif |
Tom Herbert | c5d67bd | 2011-11-28 16:32:52 +0000 | [diff] [blame] | 2732 | } |
| 2733 | |
Florian Fainelli | 0042d0c | 2013-09-06 16:58:00 +0100 | [diff] [blame] | 2734 | /** |
| 2735 | * netdev_reset_queue - reset the packets and bytes count of a network device |
| 2736 | * @dev_queue: network device |
| 2737 | * |
| 2738 | * Reset the bytes and packet count of a network device and clear the |
| 2739 | * software flow control OFF bit for this network device |
| 2740 | */ |
Tom Herbert | c5d67bd | 2011-11-28 16:32:52 +0000 | [diff] [blame] | 2741 | static inline void netdev_reset_queue(struct net_device *dev_queue) |
| 2742 | { |
| 2743 | netdev_tx_reset_queue(netdev_get_tx_queue(dev_queue, 0)); |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 2744 | } |
| 2745 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 2746 | /** |
Daniel Borkmann | b9507bd | 2014-02-16 15:55:21 +0100 | [diff] [blame] | 2747 | * netdev_cap_txqueue - check if selected tx queue exceeds device queues |
| 2748 | * @dev: network device |
| 2749 | * @queue_index: given tx queue index |
| 2750 | * |
| 2751 | * Returns 0 if given tx queue index >= number of device tx queues, |
| 2752 | * otherwise returns the originally passed tx queue index. |
| 2753 | */ |
| 2754 | static inline u16 netdev_cap_txqueue(struct net_device *dev, u16 queue_index) |
| 2755 | { |
| 2756 | if (unlikely(queue_index >= dev->real_num_tx_queues)) { |
| 2757 | net_warn_ratelimited("%s selects TX queue %d, but real number of TX queues is %d\n", |
| 2758 | dev->name, queue_index, |
| 2759 | dev->real_num_tx_queues); |
| 2760 | return 0; |
| 2761 | } |
| 2762 | |
| 2763 | return queue_index; |
| 2764 | } |
| 2765 | |
| 2766 | /** |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 2767 | * netif_running - test if up |
| 2768 | * @dev: network device |
| 2769 | * |
| 2770 | * Test if the device has been brought up. |
| 2771 | */ |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 2772 | static inline bool netif_running(const struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2773 | { |
| 2774 | return test_bit(__LINK_STATE_START, &dev->state); |
| 2775 | } |
| 2776 | |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 2777 | /* |
| 2778 | * Routines to manage the subqueues on a device. We only need start |
| 2779 | * stop, and a check if it's stopped. All other device management is |
| 2780 | * done at the overall netdevice level. |
| 2781 | * Also test the device if we're multiqueue. |
| 2782 | */ |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 2783 | |
| 2784 | /** |
| 2785 | * netif_start_subqueue - allow sending packets on subqueue |
| 2786 | * @dev: network device |
| 2787 | * @queue_index: sub queue index |
| 2788 | * |
| 2789 | * Start individual transmit queue of a device with multiple transmit queues. |
| 2790 | */ |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 2791 | static inline void netif_start_subqueue(struct net_device *dev, u16 queue_index) |
| 2792 | { |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 2793 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
Krishna Kumar | 7b3d3e4 | 2009-08-29 20:21:21 +0000 | [diff] [blame] | 2794 | |
| 2795 | netif_tx_start_queue(txq); |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 2796 | } |
| 2797 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 2798 | /** |
| 2799 | * netif_stop_subqueue - stop sending packets on subqueue |
| 2800 | * @dev: network device |
| 2801 | * @queue_index: sub queue index |
| 2802 | * |
| 2803 | * Stop individual transmit queue of a device with multiple transmit queues. |
| 2804 | */ |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 2805 | static inline void netif_stop_subqueue(struct net_device *dev, u16 queue_index) |
| 2806 | { |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 2807 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
Krishna Kumar | 7b3d3e4 | 2009-08-29 20:21:21 +0000 | [diff] [blame] | 2808 | netif_tx_stop_queue(txq); |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 2809 | } |
| 2810 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 2811 | /** |
| 2812 | * netif_subqueue_stopped - test status of subqueue |
| 2813 | * @dev: network device |
| 2814 | * @queue_index: sub queue index |
| 2815 | * |
| 2816 | * Check individual transmit queue of a device with multiple transmit queues. |
| 2817 | */ |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 2818 | static inline bool __netif_subqueue_stopped(const struct net_device *dev, |
| 2819 | u16 queue_index) |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 2820 | { |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 2821 | struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index); |
Krishna Kumar | 7b3d3e4 | 2009-08-29 20:21:21 +0000 | [diff] [blame] | 2822 | |
| 2823 | return netif_tx_queue_stopped(txq); |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 2824 | } |
| 2825 | |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 2826 | static inline bool netif_subqueue_stopped(const struct net_device *dev, |
| 2827 | struct sk_buff *skb) |
Pavel Emelyanov | 668f895 | 2007-10-21 17:01:56 -0700 | [diff] [blame] | 2828 | { |
| 2829 | return __netif_subqueue_stopped(dev, skb_get_queue_mapping(skb)); |
| 2830 | } |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 2831 | |
John Fastabend | 46e5da4 | 2014-09-12 20:04:52 -0700 | [diff] [blame] | 2832 | void netif_wake_subqueue(struct net_device *dev, u16 queue_index); |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 2833 | |
Alexander Duyck | 537c00d | 2013-01-10 08:57:02 +0000 | [diff] [blame] | 2834 | #ifdef CONFIG_XPS |
David S. Miller | 53af53a | 2013-10-08 23:07:53 -0400 | [diff] [blame] | 2835 | int netif_set_xps_queue(struct net_device *dev, const struct cpumask *mask, |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 2836 | u16 index); |
Alexander Duyck | 537c00d | 2013-01-10 08:57:02 +0000 | [diff] [blame] | 2837 | #else |
| 2838 | static inline int netif_set_xps_queue(struct net_device *dev, |
Michael S. Tsirkin | 3573540 | 2013-10-02 09:14:06 +0300 | [diff] [blame] | 2839 | const struct cpumask *mask, |
Alexander Duyck | 537c00d | 2013-01-10 08:57:02 +0000 | [diff] [blame] | 2840 | u16 index) |
| 2841 | { |
| 2842 | return 0; |
| 2843 | } |
| 2844 | #endif |
| 2845 | |
Vladislav Zolotarov | a3d22a6 | 2010-12-13 06:27:10 +0000 | [diff] [blame] | 2846 | /* |
| 2847 | * Returns a Tx hash for the given packet when dev->real_num_tx_queues is used |
| 2848 | * as a distribution range limit for the returned value. |
| 2849 | */ |
| 2850 | static inline u16 skb_tx_hash(const struct net_device *dev, |
Tom Herbert | 0e00161 | 2014-07-01 21:32:27 -0700 | [diff] [blame] | 2851 | struct sk_buff *skb) |
Vladislav Zolotarov | a3d22a6 | 2010-12-13 06:27:10 +0000 | [diff] [blame] | 2852 | { |
| 2853 | return __skb_tx_hash(dev, skb, dev->real_num_tx_queues); |
| 2854 | } |
| 2855 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 2856 | /** |
| 2857 | * netif_is_multiqueue - test if device has multiple transmit queues |
| 2858 | * @dev: network device |
| 2859 | * |
| 2860 | * Check if device has multiple transmit queues |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 2861 | */ |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 2862 | static inline bool netif_is_multiqueue(const struct net_device *dev) |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 2863 | { |
Eric Dumazet | a02cec2 | 2010-09-22 20:43:57 +0000 | [diff] [blame] | 2864 | return dev->num_tx_queues > 1; |
Peter P Waskiewicz Jr | f25f4e4 | 2007-07-06 13:36:20 -0700 | [diff] [blame] | 2865 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2866 | |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 2867 | int netif_set_real_num_tx_queues(struct net_device *dev, unsigned int txq); |
John Fastabend | f0796d5 | 2010-07-01 13:21:57 +0000 | [diff] [blame] | 2868 | |
Michael Dalton | a953be5 | 2014-01-16 22:23:28 -0800 | [diff] [blame] | 2869 | #ifdef CONFIG_SYSFS |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 2870 | int netif_set_real_num_rx_queues(struct net_device *dev, unsigned int rxq); |
Ben Hutchings | 62fe0b4 | 2010-09-27 08:24:33 +0000 | [diff] [blame] | 2871 | #else |
| 2872 | static inline int netif_set_real_num_rx_queues(struct net_device *dev, |
| 2873 | unsigned int rxq) |
| 2874 | { |
| 2875 | return 0; |
| 2876 | } |
| 2877 | #endif |
| 2878 | |
Michael Dalton | a953be5 | 2014-01-16 22:23:28 -0800 | [diff] [blame] | 2879 | #ifdef CONFIG_SYSFS |
| 2880 | static inline unsigned int get_netdev_rx_queue_index( |
| 2881 | struct netdev_rx_queue *queue) |
| 2882 | { |
| 2883 | struct net_device *dev = queue->dev; |
| 2884 | int index = queue - dev->_rx; |
| 2885 | |
| 2886 | BUG_ON(index >= dev->num_rx_queues); |
| 2887 | return index; |
| 2888 | } |
| 2889 | #endif |
| 2890 | |
Yuval Mintz | 16917b8 | 2012-07-01 03:18:50 +0000 | [diff] [blame] | 2891 | #define DEFAULT_MAX_NUM_RSS_QUEUES (8) |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 2892 | int netif_get_num_default_rss_queues(void); |
Yuval Mintz | 16917b8 | 2012-07-01 03:18:50 +0000 | [diff] [blame] | 2893 | |
Eric Dumazet | e624702 | 2013-12-05 04:45:08 -0800 | [diff] [blame] | 2894 | enum skb_free_reason { |
| 2895 | SKB_REASON_CONSUMED, |
| 2896 | SKB_REASON_DROPPED, |
| 2897 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2898 | |
Eric Dumazet | e624702 | 2013-12-05 04:45:08 -0800 | [diff] [blame] | 2899 | void __dev_kfree_skb_irq(struct sk_buff *skb, enum skb_free_reason reason); |
| 2900 | void __dev_kfree_skb_any(struct sk_buff *skb, enum skb_free_reason reason); |
| 2901 | |
| 2902 | /* |
| 2903 | * It is not allowed to call kfree_skb() or consume_skb() from hardware |
| 2904 | * interrupt context or with hardware interrupts being disabled. |
| 2905 | * (in_irq() || irqs_disabled()) |
| 2906 | * |
| 2907 | * We provide four helpers that can be used in following contexts : |
| 2908 | * |
| 2909 | * dev_kfree_skb_irq(skb) when caller drops a packet from irq context, |
| 2910 | * replacing kfree_skb(skb) |
| 2911 | * |
| 2912 | * dev_consume_skb_irq(skb) when caller consumes a packet from irq context. |
| 2913 | * Typically used in place of consume_skb(skb) in TX completion path |
| 2914 | * |
| 2915 | * dev_kfree_skb_any(skb) when caller doesn't know its current irq context, |
| 2916 | * replacing kfree_skb(skb) |
| 2917 | * |
| 2918 | * dev_consume_skb_any(skb) when caller doesn't know its current irq context, |
| 2919 | * and consumed a packet. Used in place of consume_skb(skb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2920 | */ |
Eric Dumazet | e624702 | 2013-12-05 04:45:08 -0800 | [diff] [blame] | 2921 | static inline void dev_kfree_skb_irq(struct sk_buff *skb) |
| 2922 | { |
| 2923 | __dev_kfree_skb_irq(skb, SKB_REASON_DROPPED); |
| 2924 | } |
| 2925 | |
| 2926 | static inline void dev_consume_skb_irq(struct sk_buff *skb) |
| 2927 | { |
| 2928 | __dev_kfree_skb_irq(skb, SKB_REASON_CONSUMED); |
| 2929 | } |
| 2930 | |
| 2931 | static inline void dev_kfree_skb_any(struct sk_buff *skb) |
| 2932 | { |
| 2933 | __dev_kfree_skb_any(skb, SKB_REASON_DROPPED); |
| 2934 | } |
| 2935 | |
| 2936 | static inline void dev_consume_skb_any(struct sk_buff *skb) |
| 2937 | { |
| 2938 | __dev_kfree_skb_any(skb, SKB_REASON_CONSUMED); |
| 2939 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2940 | |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 2941 | int netif_rx(struct sk_buff *skb); |
| 2942 | int netif_rx_ni(struct sk_buff *skb); |
David Miller | 7026b1d | 2015-04-05 22:19:04 -0400 | [diff] [blame] | 2943 | int netif_receive_skb_sk(struct sock *sk, struct sk_buff *skb); |
| 2944 | static inline int netif_receive_skb(struct sk_buff *skb) |
| 2945 | { |
| 2946 | return netif_receive_skb_sk(skb->sk, skb); |
| 2947 | } |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 2948 | gro_result_t napi_gro_receive(struct napi_struct *napi, struct sk_buff *skb); |
| 2949 | void napi_gro_flush(struct napi_struct *napi, bool flush_old); |
| 2950 | struct sk_buff *napi_get_frags(struct napi_struct *napi); |
| 2951 | gro_result_t napi_gro_frags(struct napi_struct *napi); |
Jerry Chu | bf5a755 | 2014-01-07 10:23:19 -0800 | [diff] [blame] | 2952 | struct packet_offload *gro_find_receive_by_type(__be16 type); |
| 2953 | struct packet_offload *gro_find_complete_by_type(__be16 type); |
Herbert Xu | 76620aa | 2009-04-16 02:02:07 -0700 | [diff] [blame] | 2954 | |
| 2955 | static inline void napi_free_frags(struct napi_struct *napi) |
| 2956 | { |
| 2957 | kfree_skb(napi->skb); |
| 2958 | napi->skb = NULL; |
| 2959 | } |
| 2960 | |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 2961 | int netdev_rx_handler_register(struct net_device *dev, |
| 2962 | rx_handler_func_t *rx_handler, |
| 2963 | void *rx_handler_data); |
| 2964 | void netdev_rx_handler_unregister(struct net_device *dev); |
Jiri Pirko | ab95bfe | 2010-06-01 21:52:08 +0000 | [diff] [blame] | 2965 | |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 2966 | bool dev_valid_name(const char *name); |
| 2967 | int dev_ioctl(struct net *net, unsigned int cmd, void __user *); |
| 2968 | int dev_ethtool(struct net *net, struct ifreq *); |
| 2969 | unsigned int dev_get_flags(const struct net_device *); |
| 2970 | int __dev_change_flags(struct net_device *, unsigned int flags); |
| 2971 | int dev_change_flags(struct net_device *, unsigned int); |
David S. Miller | cb17819 | 2013-09-30 15:36:45 -0400 | [diff] [blame] | 2972 | void __dev_notify_flags(struct net_device *, unsigned int old_flags, |
| 2973 | unsigned int gchanges); |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 2974 | int dev_change_name(struct net_device *, const char *); |
| 2975 | int dev_set_alias(struct net_device *, const char *, size_t); |
| 2976 | int dev_change_net_namespace(struct net_device *, struct net *, const char *); |
| 2977 | int dev_set_mtu(struct net_device *, int); |
| 2978 | void dev_set_group(struct net_device *, int); |
| 2979 | int dev_set_mac_address(struct net_device *, struct sockaddr *); |
| 2980 | int dev_change_carrier(struct net_device *, bool new_carrier); |
| 2981 | int dev_get_phys_port_id(struct net_device *dev, |
Jiri Pirko | 02637fc | 2014-11-28 14:34:16 +0100 | [diff] [blame] | 2982 | struct netdev_phys_item_id *ppid); |
David Ahern | db24a90 | 2015-03-17 20:23:15 -0600 | [diff] [blame] | 2983 | int dev_get_phys_port_name(struct net_device *dev, |
| 2984 | char *name, size_t len); |
Eric Dumazet | 55a93b3 | 2014-10-03 15:31:07 -0700 | [diff] [blame] | 2985 | struct sk_buff *validate_xmit_skb_list(struct sk_buff *skb, struct net_device *dev); |
David S. Miller | ce93718 | 2014-08-30 19:22:20 -0700 | [diff] [blame] | 2986 | struct sk_buff *dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev, |
| 2987 | struct netdev_queue *txq, int *ret); |
Herbert Xu | a0265d2 | 2014-04-17 13:45:03 +0800 | [diff] [blame] | 2988 | int __dev_forward_skb(struct net_device *dev, struct sk_buff *skb); |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 2989 | int dev_forward_skb(struct net_device *dev, struct sk_buff *skb); |
Vlad Yasevich | 1ee481f | 2014-03-27 17:32:29 -0400 | [diff] [blame] | 2990 | bool is_skb_forwardable(struct net_device *dev, struct sk_buff *skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2991 | |
Arnaldo Carvalho de Melo | 2038073 | 2005-08-16 02:18:02 -0300 | [diff] [blame] | 2992 | extern int netdev_budget; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2993 | |
| 2994 | /* Called by rtnetlink.c:rtnl_unlock() */ |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 2995 | void netdev_run_todo(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2996 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 2997 | /** |
| 2998 | * dev_put - release reference to device |
| 2999 | * @dev: network device |
| 3000 | * |
Benjamin Thery | 9ef4429 | 2007-10-10 21:18:17 -0700 | [diff] [blame] | 3001 | * Release reference to device to allow it to be freed. |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 3002 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3003 | static inline void dev_put(struct net_device *dev) |
| 3004 | { |
Christoph Lameter | 933393f | 2011-12-22 11:58:51 -0600 | [diff] [blame] | 3005 | this_cpu_dec(*dev->pcpu_refcnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3006 | } |
| 3007 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 3008 | /** |
| 3009 | * dev_hold - get reference to device |
| 3010 | * @dev: network device |
| 3011 | * |
Benjamin Thery | 9ef4429 | 2007-10-10 21:18:17 -0700 | [diff] [blame] | 3012 | * Hold reference to device to keep it from being freed. |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 3013 | */ |
Stephen Hemminger | 1533306 | 2006-03-20 22:32:28 -0800 | [diff] [blame] | 3014 | static inline void dev_hold(struct net_device *dev) |
| 3015 | { |
Christoph Lameter | 933393f | 2011-12-22 11:58:51 -0600 | [diff] [blame] | 3016 | this_cpu_inc(*dev->pcpu_refcnt); |
Stephen Hemminger | 1533306 | 2006-03-20 22:32:28 -0800 | [diff] [blame] | 3017 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3018 | |
| 3019 | /* Carrier loss detection, dial on demand. The functions netif_carrier_on |
| 3020 | * and _off may be called from IRQ context, but it is caller |
| 3021 | * who is responsible for serialization of these calls. |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 3022 | * |
| 3023 | * The name carrier is inappropriate, these functions should really be |
| 3024 | * called netif_lowerlayer_*() because they represent the state of any |
| 3025 | * kind of lower layer not just hardware media. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3026 | */ |
| 3027 | |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 3028 | void linkwatch_init_dev(struct net_device *dev); |
| 3029 | void linkwatch_fire_event(struct net_device *dev); |
| 3030 | void linkwatch_forget_dev(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3031 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 3032 | /** |
| 3033 | * netif_carrier_ok - test if carrier present |
| 3034 | * @dev: network device |
| 3035 | * |
| 3036 | * Check if carrier is present on device |
| 3037 | */ |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 3038 | static inline bool netif_carrier_ok(const struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3039 | { |
| 3040 | return !test_bit(__LINK_STATE_NOCARRIER, &dev->state); |
| 3041 | } |
| 3042 | |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 3043 | unsigned long dev_trans_start(struct net_device *dev); |
Eric Dumazet | 9d21493 | 2009-05-17 20:55:16 -0700 | [diff] [blame] | 3044 | |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 3045 | void __netdev_watchdog_up(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3046 | |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 3047 | void netif_carrier_on(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3048 | |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 3049 | void netif_carrier_off(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3050 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 3051 | /** |
| 3052 | * netif_dormant_on - mark device as dormant. |
| 3053 | * @dev: network device |
| 3054 | * |
| 3055 | * Mark device as dormant (as per RFC2863). |
| 3056 | * |
| 3057 | * The dormant state indicates that the relevant interface is not |
| 3058 | * actually in a condition to pass packets (i.e., it is not 'up') but is |
| 3059 | * in a "pending" state, waiting for some external event. For "on- |
| 3060 | * demand" interfaces, this new state identifies the situation where the |
| 3061 | * interface is waiting for events to place it in the up state. |
| 3062 | * |
| 3063 | */ |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 3064 | static inline void netif_dormant_on(struct net_device *dev) |
| 3065 | { |
| 3066 | if (!test_and_set_bit(__LINK_STATE_DORMANT, &dev->state)) |
| 3067 | linkwatch_fire_event(dev); |
| 3068 | } |
| 3069 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 3070 | /** |
| 3071 | * netif_dormant_off - set device as not dormant. |
| 3072 | * @dev: network device |
| 3073 | * |
| 3074 | * Device is not in dormant state. |
| 3075 | */ |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 3076 | static inline void netif_dormant_off(struct net_device *dev) |
| 3077 | { |
| 3078 | if (test_and_clear_bit(__LINK_STATE_DORMANT, &dev->state)) |
| 3079 | linkwatch_fire_event(dev); |
| 3080 | } |
| 3081 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 3082 | /** |
| 3083 | * netif_dormant - test if carrier present |
| 3084 | * @dev: network device |
| 3085 | * |
| 3086 | * Check if carrier is present on device |
| 3087 | */ |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 3088 | static inline bool netif_dormant(const struct net_device *dev) |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 3089 | { |
| 3090 | return test_bit(__LINK_STATE_DORMANT, &dev->state); |
| 3091 | } |
| 3092 | |
| 3093 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 3094 | /** |
| 3095 | * netif_oper_up - test if device is operational |
| 3096 | * @dev: network device |
| 3097 | * |
| 3098 | * Check if carrier is operational |
| 3099 | */ |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 3100 | static inline bool netif_oper_up(const struct net_device *dev) |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 3101 | { |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 3102 | return (dev->operstate == IF_OPER_UP || |
| 3103 | dev->operstate == IF_OPER_UNKNOWN /* backward compat */); |
| 3104 | } |
| 3105 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 3106 | /** |
| 3107 | * netif_device_present - is device available or removed |
| 3108 | * @dev: network device |
| 3109 | * |
| 3110 | * Check if device has not been removed from system. |
| 3111 | */ |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 3112 | static inline bool netif_device_present(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3113 | { |
| 3114 | return test_bit(__LINK_STATE_PRESENT, &dev->state); |
| 3115 | } |
| 3116 | |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 3117 | void netif_device_detach(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3118 | |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 3119 | void netif_device_attach(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3120 | |
| 3121 | /* |
| 3122 | * Network interface message level settings |
| 3123 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3124 | |
| 3125 | enum { |
| 3126 | NETIF_MSG_DRV = 0x0001, |
| 3127 | NETIF_MSG_PROBE = 0x0002, |
| 3128 | NETIF_MSG_LINK = 0x0004, |
| 3129 | NETIF_MSG_TIMER = 0x0008, |
| 3130 | NETIF_MSG_IFDOWN = 0x0010, |
| 3131 | NETIF_MSG_IFUP = 0x0020, |
| 3132 | NETIF_MSG_RX_ERR = 0x0040, |
| 3133 | NETIF_MSG_TX_ERR = 0x0080, |
| 3134 | NETIF_MSG_TX_QUEUED = 0x0100, |
| 3135 | NETIF_MSG_INTR = 0x0200, |
| 3136 | NETIF_MSG_TX_DONE = 0x0400, |
| 3137 | NETIF_MSG_RX_STATUS = 0x0800, |
| 3138 | NETIF_MSG_PKTDATA = 0x1000, |
| 3139 | NETIF_MSG_HW = 0x2000, |
| 3140 | NETIF_MSG_WOL = 0x4000, |
| 3141 | }; |
| 3142 | |
| 3143 | #define netif_msg_drv(p) ((p)->msg_enable & NETIF_MSG_DRV) |
| 3144 | #define netif_msg_probe(p) ((p)->msg_enable & NETIF_MSG_PROBE) |
| 3145 | #define netif_msg_link(p) ((p)->msg_enable & NETIF_MSG_LINK) |
| 3146 | #define netif_msg_timer(p) ((p)->msg_enable & NETIF_MSG_TIMER) |
| 3147 | #define netif_msg_ifdown(p) ((p)->msg_enable & NETIF_MSG_IFDOWN) |
| 3148 | #define netif_msg_ifup(p) ((p)->msg_enable & NETIF_MSG_IFUP) |
| 3149 | #define netif_msg_rx_err(p) ((p)->msg_enable & NETIF_MSG_RX_ERR) |
| 3150 | #define netif_msg_tx_err(p) ((p)->msg_enable & NETIF_MSG_TX_ERR) |
| 3151 | #define netif_msg_tx_queued(p) ((p)->msg_enable & NETIF_MSG_TX_QUEUED) |
| 3152 | #define netif_msg_intr(p) ((p)->msg_enable & NETIF_MSG_INTR) |
| 3153 | #define netif_msg_tx_done(p) ((p)->msg_enable & NETIF_MSG_TX_DONE) |
| 3154 | #define netif_msg_rx_status(p) ((p)->msg_enable & NETIF_MSG_RX_STATUS) |
| 3155 | #define netif_msg_pktdata(p) ((p)->msg_enable & NETIF_MSG_PKTDATA) |
| 3156 | #define netif_msg_hw(p) ((p)->msg_enable & NETIF_MSG_HW) |
| 3157 | #define netif_msg_wol(p) ((p)->msg_enable & NETIF_MSG_WOL) |
| 3158 | |
| 3159 | static inline u32 netif_msg_init(int debug_value, int default_msg_enable_bits) |
| 3160 | { |
| 3161 | /* use default */ |
| 3162 | if (debug_value < 0 || debug_value >= (sizeof(u32) * 8)) |
| 3163 | return default_msg_enable_bits; |
| 3164 | if (debug_value == 0) /* no output */ |
| 3165 | return 0; |
| 3166 | /* set low N bits */ |
| 3167 | return (1 << debug_value) - 1; |
| 3168 | } |
| 3169 | |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 3170 | static inline void __netif_tx_lock(struct netdev_queue *txq, int cpu) |
Herbert Xu | 932ff27 | 2006-06-09 12:20:56 -0700 | [diff] [blame] | 3171 | { |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 3172 | spin_lock(&txq->_xmit_lock); |
| 3173 | txq->xmit_lock_owner = cpu; |
Jamal Hadi Salim | 22dd749 | 2007-09-16 14:40:49 -0700 | [diff] [blame] | 3174 | } |
| 3175 | |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 3176 | static inline void __netif_tx_lock_bh(struct netdev_queue *txq) |
| 3177 | { |
| 3178 | spin_lock_bh(&txq->_xmit_lock); |
| 3179 | txq->xmit_lock_owner = smp_processor_id(); |
| 3180 | } |
| 3181 | |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 3182 | static inline bool __netif_tx_trylock(struct netdev_queue *txq) |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 3183 | { |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 3184 | bool ok = spin_trylock(&txq->_xmit_lock); |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 3185 | if (likely(ok)) |
| 3186 | txq->xmit_lock_owner = smp_processor_id(); |
| 3187 | return ok; |
Herbert Xu | 932ff27 | 2006-06-09 12:20:56 -0700 | [diff] [blame] | 3188 | } |
| 3189 | |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 3190 | static inline void __netif_tx_unlock(struct netdev_queue *txq) |
| 3191 | { |
| 3192 | txq->xmit_lock_owner = -1; |
| 3193 | spin_unlock(&txq->_xmit_lock); |
Herbert Xu | 932ff27 | 2006-06-09 12:20:56 -0700 | [diff] [blame] | 3194 | } |
| 3195 | |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 3196 | static inline void __netif_tx_unlock_bh(struct netdev_queue *txq) |
| 3197 | { |
| 3198 | txq->xmit_lock_owner = -1; |
| 3199 | spin_unlock_bh(&txq->_xmit_lock); |
| 3200 | } |
| 3201 | |
Eric Dumazet | 08baf56 | 2009-05-25 22:58:01 -0700 | [diff] [blame] | 3202 | static inline void txq_trans_update(struct netdev_queue *txq) |
| 3203 | { |
| 3204 | if (txq->xmit_lock_owner != -1) |
| 3205 | txq->trans_start = jiffies; |
| 3206 | } |
| 3207 | |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 3208 | /** |
| 3209 | * netif_tx_lock - grab network device transmit lock |
| 3210 | * @dev: network device |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 3211 | * |
| 3212 | * Get network device transmit lock |
| 3213 | */ |
| 3214 | static inline void netif_tx_lock(struct net_device *dev) |
| 3215 | { |
| 3216 | unsigned int i; |
| 3217 | int cpu; |
| 3218 | |
| 3219 | spin_lock(&dev->tx_global_lock); |
| 3220 | cpu = smp_processor_id(); |
| 3221 | for (i = 0; i < dev->num_tx_queues; i++) { |
| 3222 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); |
| 3223 | |
| 3224 | /* We are the only thread of execution doing a |
| 3225 | * freeze, but we have to grab the _xmit_lock in |
| 3226 | * order to synchronize with threads which are in |
| 3227 | * the ->hard_start_xmit() handler and already |
| 3228 | * checked the frozen bit. |
| 3229 | */ |
| 3230 | __netif_tx_lock(txq, cpu); |
| 3231 | set_bit(__QUEUE_STATE_FROZEN, &txq->state); |
| 3232 | __netif_tx_unlock(txq); |
| 3233 | } |
| 3234 | } |
| 3235 | |
| 3236 | static inline void netif_tx_lock_bh(struct net_device *dev) |
| 3237 | { |
| 3238 | local_bh_disable(); |
| 3239 | netif_tx_lock(dev); |
| 3240 | } |
| 3241 | |
Herbert Xu | 932ff27 | 2006-06-09 12:20:56 -0700 | [diff] [blame] | 3242 | static inline void netif_tx_unlock(struct net_device *dev) |
| 3243 | { |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 3244 | unsigned int i; |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 3245 | |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 3246 | for (i = 0; i < dev->num_tx_queues; i++) { |
| 3247 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 3248 | |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 3249 | /* No need to grab the _xmit_lock here. If the |
| 3250 | * queue is not stopped for another reason, we |
| 3251 | * force a schedule. |
| 3252 | */ |
| 3253 | clear_bit(__QUEUE_STATE_FROZEN, &txq->state); |
Krishna Kumar | 7b3d3e4 | 2009-08-29 20:21:21 +0000 | [diff] [blame] | 3254 | netif_schedule_queue(txq); |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 3255 | } |
| 3256 | spin_unlock(&dev->tx_global_lock); |
Herbert Xu | 932ff27 | 2006-06-09 12:20:56 -0700 | [diff] [blame] | 3257 | } |
| 3258 | |
| 3259 | static inline void netif_tx_unlock_bh(struct net_device *dev) |
| 3260 | { |
David S. Miller | e8a0464 | 2008-07-17 00:34:19 -0700 | [diff] [blame] | 3261 | netif_tx_unlock(dev); |
| 3262 | local_bh_enable(); |
Herbert Xu | 932ff27 | 2006-06-09 12:20:56 -0700 | [diff] [blame] | 3263 | } |
| 3264 | |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 3265 | #define HARD_TX_LOCK(dev, txq, cpu) { \ |
Jamal Hadi Salim | 22dd749 | 2007-09-16 14:40:49 -0700 | [diff] [blame] | 3266 | if ((dev->features & NETIF_F_LLTX) == 0) { \ |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 3267 | __netif_tx_lock(txq, cpu); \ |
Jamal Hadi Salim | 22dd749 | 2007-09-16 14:40:49 -0700 | [diff] [blame] | 3268 | } \ |
| 3269 | } |
| 3270 | |
Eric W. Biederman | 5efeac4 | 2014-03-27 15:42:20 -0700 | [diff] [blame] | 3271 | #define HARD_TX_TRYLOCK(dev, txq) \ |
| 3272 | (((dev->features & NETIF_F_LLTX) == 0) ? \ |
| 3273 | __netif_tx_trylock(txq) : \ |
| 3274 | true ) |
| 3275 | |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 3276 | #define HARD_TX_UNLOCK(dev, txq) { \ |
Jamal Hadi Salim | 22dd749 | 2007-09-16 14:40:49 -0700 | [diff] [blame] | 3277 | if ((dev->features & NETIF_F_LLTX) == 0) { \ |
David S. Miller | c773e84 | 2008-07-08 23:13:53 -0700 | [diff] [blame] | 3278 | __netif_tx_unlock(txq); \ |
Jamal Hadi Salim | 22dd749 | 2007-09-16 14:40:49 -0700 | [diff] [blame] | 3279 | } \ |
| 3280 | } |
| 3281 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3282 | static inline void netif_tx_disable(struct net_device *dev) |
| 3283 | { |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 3284 | unsigned int i; |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 3285 | int cpu; |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 3286 | |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 3287 | local_bh_disable(); |
| 3288 | cpu = smp_processor_id(); |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 3289 | for (i = 0; i < dev->num_tx_queues; i++) { |
| 3290 | struct netdev_queue *txq = netdev_get_tx_queue(dev, i); |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 3291 | |
| 3292 | __netif_tx_lock(txq, cpu); |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 3293 | netif_tx_stop_queue(txq); |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 3294 | __netif_tx_unlock(txq); |
David S. Miller | fd2ea0a | 2008-07-17 01:56:23 -0700 | [diff] [blame] | 3295 | } |
David S. Miller | c3f26a2 | 2008-07-31 16:58:50 -0700 | [diff] [blame] | 3296 | local_bh_enable(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3297 | } |
| 3298 | |
David S. Miller | e308a5d | 2008-07-15 00:13:44 -0700 | [diff] [blame] | 3299 | static inline void netif_addr_lock(struct net_device *dev) |
| 3300 | { |
| 3301 | spin_lock(&dev->addr_list_lock); |
| 3302 | } |
| 3303 | |
Jiri Pirko | 2429f7a | 2012-01-09 06:36:54 +0000 | [diff] [blame] | 3304 | static inline void netif_addr_lock_nested(struct net_device *dev) |
| 3305 | { |
Vlad Yasevich | 25175ba | 2014-05-16 17:04:54 -0400 | [diff] [blame] | 3306 | int subclass = SINGLE_DEPTH_NESTING; |
| 3307 | |
| 3308 | if (dev->netdev_ops->ndo_get_lock_subclass) |
| 3309 | subclass = dev->netdev_ops->ndo_get_lock_subclass(dev); |
| 3310 | |
| 3311 | spin_lock_nested(&dev->addr_list_lock, subclass); |
Jiri Pirko | 2429f7a | 2012-01-09 06:36:54 +0000 | [diff] [blame] | 3312 | } |
| 3313 | |
David S. Miller | e308a5d | 2008-07-15 00:13:44 -0700 | [diff] [blame] | 3314 | static inline void netif_addr_lock_bh(struct net_device *dev) |
| 3315 | { |
| 3316 | spin_lock_bh(&dev->addr_list_lock); |
| 3317 | } |
| 3318 | |
| 3319 | static inline void netif_addr_unlock(struct net_device *dev) |
| 3320 | { |
| 3321 | spin_unlock(&dev->addr_list_lock); |
| 3322 | } |
| 3323 | |
| 3324 | static inline void netif_addr_unlock_bh(struct net_device *dev) |
| 3325 | { |
| 3326 | spin_unlock_bh(&dev->addr_list_lock); |
| 3327 | } |
| 3328 | |
Jiri Pirko | f001fde | 2009-05-05 02:48:28 +0000 | [diff] [blame] | 3329 | /* |
Jiri Pirko | 31278e7 | 2009-06-17 01:12:19 +0000 | [diff] [blame] | 3330 | * dev_addrs walker. Should be used only for read access. Call with |
Jiri Pirko | f001fde | 2009-05-05 02:48:28 +0000 | [diff] [blame] | 3331 | * rcu_read_lock held. |
| 3332 | */ |
| 3333 | #define for_each_dev_addr(dev, ha) \ |
Jiri Pirko | 31278e7 | 2009-06-17 01:12:19 +0000 | [diff] [blame] | 3334 | list_for_each_entry_rcu(ha, &dev->dev_addrs.list, list) |
Jiri Pirko | f001fde | 2009-05-05 02:48:28 +0000 | [diff] [blame] | 3335 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3336 | /* These functions live elsewhere (drivers/net/net_init.c, but related) */ |
| 3337 | |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 3338 | void ether_setup(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3339 | |
| 3340 | /* Support for loadable net-drivers */ |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 3341 | struct net_device *alloc_netdev_mqs(int sizeof_priv, const char *name, |
Tom Gundersen | c835a67 | 2014-07-14 16:37:24 +0200 | [diff] [blame] | 3342 | unsigned char name_assign_type, |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 3343 | void (*setup)(struct net_device *), |
| 3344 | unsigned int txqs, unsigned int rxqs); |
Tom Gundersen | c835a67 | 2014-07-14 16:37:24 +0200 | [diff] [blame] | 3345 | #define alloc_netdev(sizeof_priv, name, name_assign_type, setup) \ |
| 3346 | alloc_netdev_mqs(sizeof_priv, name, name_assign_type, setup, 1, 1) |
Tom Herbert | 36909ea | 2011-01-09 19:36:31 +0000 | [diff] [blame] | 3347 | |
Tom Gundersen | c835a67 | 2014-07-14 16:37:24 +0200 | [diff] [blame] | 3348 | #define alloc_netdev_mq(sizeof_priv, name, name_assign_type, setup, count) \ |
| 3349 | alloc_netdev_mqs(sizeof_priv, name, name_assign_type, setup, count, \ |
| 3350 | count) |
Tom Herbert | 36909ea | 2011-01-09 19:36:31 +0000 | [diff] [blame] | 3351 | |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 3352 | int register_netdev(struct net_device *dev); |
| 3353 | void unregister_netdev(struct net_device *dev); |
Jiri Pirko | f001fde | 2009-05-05 02:48:28 +0000 | [diff] [blame] | 3354 | |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 3355 | /* General hardware address lists handling functions */ |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 3356 | int __hw_addr_sync(struct netdev_hw_addr_list *to_list, |
| 3357 | struct netdev_hw_addr_list *from_list, int addr_len); |
| 3358 | void __hw_addr_unsync(struct netdev_hw_addr_list *to_list, |
| 3359 | struct netdev_hw_addr_list *from_list, int addr_len); |
Alexander Duyck | 670e5b8 | 2014-05-28 18:44:46 -0700 | [diff] [blame] | 3360 | int __hw_addr_sync_dev(struct netdev_hw_addr_list *list, |
| 3361 | struct net_device *dev, |
| 3362 | int (*sync)(struct net_device *, const unsigned char *), |
| 3363 | int (*unsync)(struct net_device *, |
| 3364 | const unsigned char *)); |
| 3365 | void __hw_addr_unsync_dev(struct netdev_hw_addr_list *list, |
| 3366 | struct net_device *dev, |
| 3367 | int (*unsync)(struct net_device *, |
| 3368 | const unsigned char *)); |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 3369 | void __hw_addr_init(struct netdev_hw_addr_list *list); |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 3370 | |
Jiri Pirko | f001fde | 2009-05-05 02:48:28 +0000 | [diff] [blame] | 3371 | /* Functions used for device addresses handling */ |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 3372 | int dev_addr_add(struct net_device *dev, const unsigned char *addr, |
| 3373 | unsigned char addr_type); |
| 3374 | int dev_addr_del(struct net_device *dev, const unsigned char *addr, |
| 3375 | unsigned char addr_type); |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 3376 | void dev_addr_flush(struct net_device *dev); |
| 3377 | int dev_addr_init(struct net_device *dev); |
Jiri Pirko | a748ee2 | 2010-04-01 21:22:09 +0000 | [diff] [blame] | 3378 | |
| 3379 | /* Functions used for unicast addresses handling */ |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 3380 | int dev_uc_add(struct net_device *dev, const unsigned char *addr); |
| 3381 | int dev_uc_add_excl(struct net_device *dev, const unsigned char *addr); |
| 3382 | int dev_uc_del(struct net_device *dev, const unsigned char *addr); |
| 3383 | int dev_uc_sync(struct net_device *to, struct net_device *from); |
| 3384 | int dev_uc_sync_multiple(struct net_device *to, struct net_device *from); |
| 3385 | void dev_uc_unsync(struct net_device *to, struct net_device *from); |
| 3386 | void dev_uc_flush(struct net_device *dev); |
| 3387 | void dev_uc_init(struct net_device *dev); |
Jiri Pirko | f001fde | 2009-05-05 02:48:28 +0000 | [diff] [blame] | 3388 | |
Alexander Duyck | 670e5b8 | 2014-05-28 18:44:46 -0700 | [diff] [blame] | 3389 | /** |
| 3390 | * __dev_uc_sync - Synchonize device's unicast list |
| 3391 | * @dev: device to sync |
| 3392 | * @sync: function to call if address should be added |
| 3393 | * @unsync: function to call if address should be removed |
| 3394 | * |
| 3395 | * Add newly added addresses to the interface, and release |
| 3396 | * addresses that have been deleted. |
| 3397 | **/ |
| 3398 | static inline int __dev_uc_sync(struct net_device *dev, |
| 3399 | int (*sync)(struct net_device *, |
| 3400 | const unsigned char *), |
| 3401 | int (*unsync)(struct net_device *, |
| 3402 | const unsigned char *)) |
| 3403 | { |
| 3404 | return __hw_addr_sync_dev(&dev->uc, dev, sync, unsync); |
| 3405 | } |
| 3406 | |
| 3407 | /** |
Masanari Iida | e793c0f | 2014-09-04 23:44:36 +0900 | [diff] [blame] | 3408 | * __dev_uc_unsync - Remove synchronized addresses from device |
Alexander Duyck | 670e5b8 | 2014-05-28 18:44:46 -0700 | [diff] [blame] | 3409 | * @dev: device to sync |
| 3410 | * @unsync: function to call if address should be removed |
| 3411 | * |
| 3412 | * Remove all addresses that were added to the device by dev_uc_sync(). |
| 3413 | **/ |
| 3414 | static inline void __dev_uc_unsync(struct net_device *dev, |
| 3415 | int (*unsync)(struct net_device *, |
| 3416 | const unsigned char *)) |
| 3417 | { |
| 3418 | __hw_addr_unsync_dev(&dev->uc, dev, unsync); |
| 3419 | } |
| 3420 | |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 3421 | /* Functions used for multicast addresses handling */ |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 3422 | int dev_mc_add(struct net_device *dev, const unsigned char *addr); |
| 3423 | int dev_mc_add_global(struct net_device *dev, const unsigned char *addr); |
| 3424 | int dev_mc_add_excl(struct net_device *dev, const unsigned char *addr); |
| 3425 | int dev_mc_del(struct net_device *dev, const unsigned char *addr); |
| 3426 | int dev_mc_del_global(struct net_device *dev, const unsigned char *addr); |
| 3427 | int dev_mc_sync(struct net_device *to, struct net_device *from); |
| 3428 | int dev_mc_sync_multiple(struct net_device *to, struct net_device *from); |
| 3429 | void dev_mc_unsync(struct net_device *to, struct net_device *from); |
| 3430 | void dev_mc_flush(struct net_device *dev); |
| 3431 | void dev_mc_init(struct net_device *dev); |
Herbert Xu | fb286bb | 2005-11-10 13:01:24 -0800 | [diff] [blame] | 3432 | |
Alexander Duyck | 670e5b8 | 2014-05-28 18:44:46 -0700 | [diff] [blame] | 3433 | /** |
| 3434 | * __dev_mc_sync - Synchonize device's multicast list |
| 3435 | * @dev: device to sync |
| 3436 | * @sync: function to call if address should be added |
| 3437 | * @unsync: function to call if address should be removed |
| 3438 | * |
| 3439 | * Add newly added addresses to the interface, and release |
| 3440 | * addresses that have been deleted. |
| 3441 | **/ |
| 3442 | static inline int __dev_mc_sync(struct net_device *dev, |
| 3443 | int (*sync)(struct net_device *, |
| 3444 | const unsigned char *), |
| 3445 | int (*unsync)(struct net_device *, |
| 3446 | const unsigned char *)) |
| 3447 | { |
| 3448 | return __hw_addr_sync_dev(&dev->mc, dev, sync, unsync); |
| 3449 | } |
| 3450 | |
| 3451 | /** |
Masanari Iida | e793c0f | 2014-09-04 23:44:36 +0900 | [diff] [blame] | 3452 | * __dev_mc_unsync - Remove synchronized addresses from device |
Alexander Duyck | 670e5b8 | 2014-05-28 18:44:46 -0700 | [diff] [blame] | 3453 | * @dev: device to sync |
| 3454 | * @unsync: function to call if address should be removed |
| 3455 | * |
| 3456 | * Remove all addresses that were added to the device by dev_mc_sync(). |
| 3457 | **/ |
| 3458 | static inline void __dev_mc_unsync(struct net_device *dev, |
| 3459 | int (*unsync)(struct net_device *, |
| 3460 | const unsigned char *)) |
| 3461 | { |
| 3462 | __hw_addr_unsync_dev(&dev->mc, dev, unsync); |
| 3463 | } |
| 3464 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3465 | /* Functions used for secondary unicast and multicast support */ |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 3466 | void dev_set_rx_mode(struct net_device *dev); |
| 3467 | void __dev_set_rx_mode(struct net_device *dev); |
| 3468 | int dev_set_promiscuity(struct net_device *dev, int inc); |
| 3469 | int dev_set_allmulti(struct net_device *dev, int inc); |
| 3470 | void netdev_state_change(struct net_device *dev); |
| 3471 | void netdev_notify_peers(struct net_device *dev); |
| 3472 | void netdev_features_change(struct net_device *dev); |
Herbert Xu | fb286bb | 2005-11-10 13:01:24 -0800 | [diff] [blame] | 3473 | /* Load a device via the kmod */ |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 3474 | void dev_load(struct net *net, const char *name); |
| 3475 | struct rtnl_link_stats64 *dev_get_stats(struct net_device *dev, |
| 3476 | struct rtnl_link_stats64 *storage); |
| 3477 | void netdev_stats_to_stats64(struct rtnl_link_stats64 *stats64, |
| 3478 | const struct net_device_stats *netdev_stats); |
Herbert Xu | fb286bb | 2005-11-10 13:01:24 -0800 | [diff] [blame] | 3479 | |
| 3480 | extern int netdev_max_backlog; |
Eric Dumazet | 3b098e2 | 2010-05-15 23:57:10 -0700 | [diff] [blame] | 3481 | extern int netdev_tstamp_prequeue; |
Herbert Xu | fb286bb | 2005-11-10 13:01:24 -0800 | [diff] [blame] | 3482 | extern int weight_p; |
Eric Dumazet | 0a14842 | 2011-04-20 09:27:32 +0000 | [diff] [blame] | 3483 | extern int bpf_jit_enable; |
Jiri Pirko | 9ff162a | 2013-01-03 22:48:49 +0000 | [diff] [blame] | 3484 | |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 3485 | bool netdev_has_upper_dev(struct net_device *dev, struct net_device *upper_dev); |
Vlad Yasevich | 44a4085 | 2014-05-16 17:20:38 -0400 | [diff] [blame] | 3486 | struct net_device *netdev_upper_get_next_dev_rcu(struct net_device *dev, |
| 3487 | struct list_head **iter); |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 3488 | struct net_device *netdev_all_upper_get_next_dev_rcu(struct net_device *dev, |
| 3489 | struct list_head **iter); |
Veaceslav Falico | 8b5be85 | 2013-08-28 23:25:08 +0200 | [diff] [blame] | 3490 | |
| 3491 | /* iterate through upper list, must be called under RCU read lock */ |
Vlad Yasevich | 44a4085 | 2014-05-16 17:20:38 -0400 | [diff] [blame] | 3492 | #define netdev_for_each_upper_dev_rcu(dev, updev, iter) \ |
| 3493 | for (iter = &(dev)->adj_list.upper, \ |
| 3494 | updev = netdev_upper_get_next_dev_rcu(dev, &(iter)); \ |
| 3495 | updev; \ |
| 3496 | updev = netdev_upper_get_next_dev_rcu(dev, &(iter))) |
| 3497 | |
| 3498 | /* iterate through upper list, must be called under RCU read lock */ |
Veaceslav Falico | 2f268f1 | 2013-09-25 09:20:07 +0200 | [diff] [blame] | 3499 | #define netdev_for_each_all_upper_dev_rcu(dev, updev, iter) \ |
| 3500 | for (iter = &(dev)->all_adj_list.upper, \ |
| 3501 | updev = netdev_all_upper_get_next_dev_rcu(dev, &(iter)); \ |
| 3502 | updev; \ |
| 3503 | updev = netdev_all_upper_get_next_dev_rcu(dev, &(iter))) |
Veaceslav Falico | 8b5be85 | 2013-08-28 23:25:08 +0200 | [diff] [blame] | 3504 | |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 3505 | void *netdev_lower_get_next_private(struct net_device *dev, |
| 3506 | struct list_head **iter); |
| 3507 | void *netdev_lower_get_next_private_rcu(struct net_device *dev, |
| 3508 | struct list_head **iter); |
Veaceslav Falico | 31088a1 | 2013-09-25 09:20:12 +0200 | [diff] [blame] | 3509 | |
| 3510 | #define netdev_for_each_lower_private(dev, priv, iter) \ |
| 3511 | for (iter = (dev)->adj_list.lower.next, \ |
| 3512 | priv = netdev_lower_get_next_private(dev, &(iter)); \ |
| 3513 | priv; \ |
| 3514 | priv = netdev_lower_get_next_private(dev, &(iter))) |
| 3515 | |
| 3516 | #define netdev_for_each_lower_private_rcu(dev, priv, iter) \ |
| 3517 | for (iter = &(dev)->adj_list.lower, \ |
| 3518 | priv = netdev_lower_get_next_private_rcu(dev, &(iter)); \ |
| 3519 | priv; \ |
| 3520 | priv = netdev_lower_get_next_private_rcu(dev, &(iter))) |
| 3521 | |
Vlad Yasevich | 4085ebe | 2014-05-16 17:04:53 -0400 | [diff] [blame] | 3522 | void *netdev_lower_get_next(struct net_device *dev, |
| 3523 | struct list_head **iter); |
| 3524 | #define netdev_for_each_lower_dev(dev, ldev, iter) \ |
| 3525 | for (iter = &(dev)->adj_list.lower, \ |
| 3526 | ldev = netdev_lower_get_next(dev, &(iter)); \ |
| 3527 | ldev; \ |
| 3528 | ldev = netdev_lower_get_next(dev, &(iter))) |
| 3529 | |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 3530 | void *netdev_adjacent_get_private(struct list_head *adj_list); |
dingtianhong | e001bfa | 2013-12-13 10:19:55 +0800 | [diff] [blame] | 3531 | void *netdev_lower_get_first_private_rcu(struct net_device *dev); |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 3532 | struct net_device *netdev_master_upper_dev_get(struct net_device *dev); |
| 3533 | struct net_device *netdev_master_upper_dev_get_rcu(struct net_device *dev); |
| 3534 | int netdev_upper_dev_link(struct net_device *dev, struct net_device *upper_dev); |
| 3535 | int netdev_master_upper_dev_link(struct net_device *dev, |
Jiri Pirko | 9ff162a | 2013-01-03 22:48:49 +0000 | [diff] [blame] | 3536 | struct net_device *upper_dev); |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 3537 | int netdev_master_upper_dev_link_private(struct net_device *dev, |
| 3538 | struct net_device *upper_dev, |
| 3539 | void *private); |
| 3540 | void netdev_upper_dev_unlink(struct net_device *dev, |
| 3541 | struct net_device *upper_dev); |
Veaceslav Falico | 5bb025f | 2014-01-14 21:58:51 +0100 | [diff] [blame] | 3542 | void netdev_adjacent_rename_links(struct net_device *dev, char *oldname); |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 3543 | void *netdev_lower_dev_get_private(struct net_device *dev, |
| 3544 | struct net_device *lower_dev); |
Eric Dumazet | 960fb62 | 2014-11-16 06:23:05 -0800 | [diff] [blame] | 3545 | |
| 3546 | /* RSS keys are 40 or 52 bytes long */ |
| 3547 | #define NETDEV_RSS_KEY_LEN 52 |
| 3548 | extern u8 netdev_rss_key[NETDEV_RSS_KEY_LEN]; |
| 3549 | void netdev_rss_key_fill(void *buffer, size_t len); |
| 3550 | |
Vlad Yasevich | 4085ebe | 2014-05-16 17:04:53 -0400 | [diff] [blame] | 3551 | int dev_get_nest_level(struct net_device *dev, |
| 3552 | bool (*type_check)(struct net_device *dev)); |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 3553 | int skb_checksum_help(struct sk_buff *skb); |
| 3554 | struct sk_buff *__skb_gso_segment(struct sk_buff *skb, |
| 3555 | netdev_features_t features, bool tx_path); |
| 3556 | struct sk_buff *skb_mac_gso_segment(struct sk_buff *skb, |
| 3557 | netdev_features_t features); |
Cong Wang | 12b0004 | 2013-02-05 16:36:38 +0000 | [diff] [blame] | 3558 | |
Moni Shoua | 61bd385 | 2015-02-03 16:48:29 +0200 | [diff] [blame] | 3559 | struct netdev_bonding_info { |
| 3560 | ifslave slave; |
| 3561 | ifbond master; |
| 3562 | }; |
| 3563 | |
| 3564 | struct netdev_notifier_bonding_info { |
| 3565 | struct netdev_notifier_info info; /* must be first */ |
| 3566 | struct netdev_bonding_info bonding_info; |
| 3567 | }; |
| 3568 | |
| 3569 | void netdev_bonding_info_change(struct net_device *dev, |
| 3570 | struct netdev_bonding_info *bonding_info); |
| 3571 | |
Cong Wang | 12b0004 | 2013-02-05 16:36:38 +0000 | [diff] [blame] | 3572 | static inline |
| 3573 | struct sk_buff *skb_gso_segment(struct sk_buff *skb, netdev_features_t features) |
| 3574 | { |
| 3575 | return __skb_gso_segment(skb, features, true); |
| 3576 | } |
Vlad Yasevich | 53d6471 | 2014-03-27 17:26:18 -0400 | [diff] [blame] | 3577 | __be16 skb_network_protocol(struct sk_buff *skb, int *depth); |
Pravin B Shelar | ec5f061 | 2013-03-07 09:28:01 +0000 | [diff] [blame] | 3578 | |
| 3579 | static inline bool can_checksum_protocol(netdev_features_t features, |
| 3580 | __be16 protocol) |
| 3581 | { |
| 3582 | return ((features & NETIF_F_GEN_CSUM) || |
| 3583 | ((features & NETIF_F_V4_CSUM) && |
| 3584 | protocol == htons(ETH_P_IP)) || |
| 3585 | ((features & NETIF_F_V6_CSUM) && |
| 3586 | protocol == htons(ETH_P_IPV6)) || |
| 3587 | ((features & NETIF_F_FCOE_CRC) && |
| 3588 | protocol == htons(ETH_P_FCOE))); |
| 3589 | } |
Cong Wang | 12b0004 | 2013-02-05 16:36:38 +0000 | [diff] [blame] | 3590 | |
Herbert Xu | fb286bb | 2005-11-10 13:01:24 -0800 | [diff] [blame] | 3591 | #ifdef CONFIG_BUG |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 3592 | void netdev_rx_csum_fault(struct net_device *dev); |
Herbert Xu | fb286bb | 2005-11-10 13:01:24 -0800 | [diff] [blame] | 3593 | #else |
| 3594 | static inline void netdev_rx_csum_fault(struct net_device *dev) |
| 3595 | { |
| 3596 | } |
| 3597 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3598 | /* rx skb timestamps */ |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 3599 | void net_enable_timestamp(void); |
| 3600 | void net_disable_timestamp(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3601 | |
Arnaldo Carvalho de Melo | 2038073 | 2005-08-16 02:18:02 -0300 | [diff] [blame] | 3602 | #ifdef CONFIG_PROC_FS |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 3603 | int __init dev_proc_init(void); |
Cong Wang | 900ff8c | 2013-02-18 19:20:33 +0000 | [diff] [blame] | 3604 | #else |
| 3605 | #define dev_proc_init() 0 |
Arnaldo Carvalho de Melo | 2038073 | 2005-08-16 02:18:02 -0300 | [diff] [blame] | 3606 | #endif |
| 3607 | |
David S. Miller | 4798248 | 2014-08-22 16:21:53 -0700 | [diff] [blame] | 3608 | static inline netdev_tx_t __netdev_start_xmit(const struct net_device_ops *ops, |
David S. Miller | fa2dbdc | 2014-08-29 21:55:22 -0700 | [diff] [blame] | 3609 | struct sk_buff *skb, struct net_device *dev, |
| 3610 | bool more) |
David S. Miller | 4798248 | 2014-08-22 16:21:53 -0700 | [diff] [blame] | 3611 | { |
David S. Miller | fa2dbdc | 2014-08-29 21:55:22 -0700 | [diff] [blame] | 3612 | skb->xmit_more = more ? 1 : 0; |
David S. Miller | 0b725a2 | 2014-08-25 15:51:53 -0700 | [diff] [blame] | 3613 | return ops->ndo_start_xmit(skb, dev); |
David S. Miller | 4798248 | 2014-08-22 16:21:53 -0700 | [diff] [blame] | 3614 | } |
| 3615 | |
David S. Miller | 10b3ad8 | 2014-08-29 21:07:24 -0700 | [diff] [blame] | 3616 | static inline netdev_tx_t netdev_start_xmit(struct sk_buff *skb, struct net_device *dev, |
David S. Miller | fa2dbdc | 2014-08-29 21:55:22 -0700 | [diff] [blame] | 3617 | struct netdev_queue *txq, bool more) |
David S. Miller | 4798248 | 2014-08-22 16:21:53 -0700 | [diff] [blame] | 3618 | { |
| 3619 | const struct net_device_ops *ops = dev->netdev_ops; |
David S. Miller | 10b3ad8 | 2014-08-29 21:07:24 -0700 | [diff] [blame] | 3620 | int rc; |
David S. Miller | 4798248 | 2014-08-22 16:21:53 -0700 | [diff] [blame] | 3621 | |
David S. Miller | fa2dbdc | 2014-08-29 21:55:22 -0700 | [diff] [blame] | 3622 | rc = __netdev_start_xmit(ops, skb, dev, more); |
David S. Miller | 10b3ad8 | 2014-08-29 21:07:24 -0700 | [diff] [blame] | 3623 | if (rc == NETDEV_TX_OK) |
| 3624 | txq_trans_update(txq); |
| 3625 | |
| 3626 | return rc; |
David S. Miller | 4798248 | 2014-08-22 16:21:53 -0700 | [diff] [blame] | 3627 | } |
| 3628 | |
Linus Torvalds | 42a2d92 | 2013-11-13 17:40:34 +0900 | [diff] [blame] | 3629 | int netdev_class_create_file_ns(struct class_attribute *class_attr, |
| 3630 | const void *ns); |
| 3631 | void netdev_class_remove_file_ns(struct class_attribute *class_attr, |
| 3632 | const void *ns); |
Tejun Heo | 58292cbe | 2013-09-11 22:29:04 -0400 | [diff] [blame] | 3633 | |
| 3634 | static inline int netdev_class_create_file(struct class_attribute *class_attr) |
| 3635 | { |
| 3636 | return netdev_class_create_file_ns(class_attr, NULL); |
| 3637 | } |
| 3638 | |
| 3639 | static inline void netdev_class_remove_file(struct class_attribute *class_attr) |
| 3640 | { |
| 3641 | netdev_class_remove_file_ns(class_attr, NULL); |
| 3642 | } |
Jay Vosburgh | b8a9787 | 2008-06-13 18:12:04 -0700 | [diff] [blame] | 3643 | |
Johannes Berg | 0460079 | 2010-08-05 17:45:15 +0200 | [diff] [blame] | 3644 | extern struct kobj_ns_type_operations net_ns_type_operations; |
| 3645 | |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 3646 | const char *netdev_drivername(const struct net_device *dev); |
Arjan van de Ven | 6579e57 | 2008-07-21 13:31:48 -0700 | [diff] [blame] | 3647 | |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 3648 | void linkwatch_run_queue(void); |
Arnaldo Carvalho de Melo | 2038073 | 2005-08-16 02:18:02 -0300 | [diff] [blame] | 3649 | |
Michal Kubeček | da08143 | 2014-05-20 08:29:25 +0200 | [diff] [blame] | 3650 | static inline netdev_features_t netdev_intersect_features(netdev_features_t f1, |
| 3651 | netdev_features_t f2) |
| 3652 | { |
| 3653 | if (f1 & NETIF_F_GEN_CSUM) |
| 3654 | f1 |= (NETIF_F_ALL_CSUM & ~NETIF_F_GEN_CSUM); |
| 3655 | if (f2 & NETIF_F_GEN_CSUM) |
| 3656 | f2 |= (NETIF_F_ALL_CSUM & ~NETIF_F_GEN_CSUM); |
| 3657 | f1 &= f2; |
| 3658 | if (f1 & NETIF_F_GEN_CSUM) |
| 3659 | f1 &= ~(NETIF_F_ALL_CSUM & ~NETIF_F_GEN_CSUM); |
| 3660 | |
| 3661 | return f1; |
| 3662 | } |
| 3663 | |
Michał Mirosław | c8f44af | 2011-11-15 15:29:55 +0000 | [diff] [blame] | 3664 | static inline netdev_features_t netdev_get_wanted_features( |
| 3665 | struct net_device *dev) |
Michał Mirosław | 5455c69 | 2011-02-15 16:59:17 +0000 | [diff] [blame] | 3666 | { |
| 3667 | return (dev->features & ~dev->hw_features) | dev->wanted_features; |
| 3668 | } |
Michał Mirosław | c8f44af | 2011-11-15 15:29:55 +0000 | [diff] [blame] | 3669 | netdev_features_t netdev_increment_features(netdev_features_t all, |
| 3670 | netdev_features_t one, netdev_features_t mask); |
Eric Dumazet | b0ce350 | 2013-05-16 07:34:53 +0000 | [diff] [blame] | 3671 | |
| 3672 | /* Allow TSO being used on stacked device : |
| 3673 | * Performing the GSO segmentation before last device |
| 3674 | * is a performance improvement. |
| 3675 | */ |
| 3676 | static inline netdev_features_t netdev_add_tso_features(netdev_features_t features, |
| 3677 | netdev_features_t mask) |
| 3678 | { |
| 3679 | return netdev_increment_features(features, NETIF_F_ALL_TSO, mask); |
| 3680 | } |
| 3681 | |
Michał Mirosław | 6cb6a27 | 2011-04-02 22:48:47 -0700 | [diff] [blame] | 3682 | int __netdev_update_features(struct net_device *dev); |
Michał Mirosław | 5455c69 | 2011-02-15 16:59:17 +0000 | [diff] [blame] | 3683 | void netdev_update_features(struct net_device *dev); |
Michał Mirosław | afe12cc | 2011-05-07 03:22:17 +0000 | [diff] [blame] | 3684 | void netdev_change_features(struct net_device *dev); |
Herbert Xu | 7f353bf | 2007-08-10 15:47:58 -0700 | [diff] [blame] | 3685 | |
Patrick Mullaney | fc4a748 | 2009-12-03 15:59:22 -0800 | [diff] [blame] | 3686 | void netif_stacked_transfer_operstate(const struct net_device *rootdev, |
| 3687 | struct net_device *dev); |
| 3688 | |
Toshiaki Makita | e38f302 | 2015-03-27 14:31:13 +0900 | [diff] [blame] | 3689 | netdev_features_t passthru_features_check(struct sk_buff *skb, |
| 3690 | struct net_device *dev, |
| 3691 | netdev_features_t features); |
Florian Westphal | c1e756b | 2014-05-05 15:00:44 +0200 | [diff] [blame] | 3692 | netdev_features_t netif_skb_features(struct sk_buff *skb); |
Jesse Gross | 58e998c | 2010-10-29 12:14:55 +0000 | [diff] [blame] | 3693 | |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 3694 | static inline bool net_gso_ok(netdev_features_t features, int gso_type) |
Herbert Xu | bcd7611 | 2006-06-30 13:36:35 -0700 | [diff] [blame] | 3695 | { |
Michał Mirosław | c8f44af | 2011-11-15 15:29:55 +0000 | [diff] [blame] | 3696 | netdev_features_t feature = gso_type << NETIF_F_GSO_SHIFT; |
Michał Mirosław | 0345e18 | 2011-11-16 14:05:33 +0000 | [diff] [blame] | 3697 | |
| 3698 | /* check flags correspondence */ |
| 3699 | BUILD_BUG_ON(SKB_GSO_TCPV4 != (NETIF_F_TSO >> NETIF_F_GSO_SHIFT)); |
| 3700 | BUILD_BUG_ON(SKB_GSO_UDP != (NETIF_F_UFO >> NETIF_F_GSO_SHIFT)); |
| 3701 | BUILD_BUG_ON(SKB_GSO_DODGY != (NETIF_F_GSO_ROBUST >> NETIF_F_GSO_SHIFT)); |
| 3702 | BUILD_BUG_ON(SKB_GSO_TCP_ECN != (NETIF_F_TSO_ECN >> NETIF_F_GSO_SHIFT)); |
| 3703 | BUILD_BUG_ON(SKB_GSO_TCPV6 != (NETIF_F_TSO6 >> NETIF_F_GSO_SHIFT)); |
| 3704 | BUILD_BUG_ON(SKB_GSO_FCOE != (NETIF_F_FSO >> NETIF_F_GSO_SHIFT)); |
Tom Herbert | 4b28252 | 2014-06-14 23:23:52 -0700 | [diff] [blame] | 3705 | BUILD_BUG_ON(SKB_GSO_GRE != (NETIF_F_GSO_GRE >> NETIF_F_GSO_SHIFT)); |
| 3706 | BUILD_BUG_ON(SKB_GSO_GRE_CSUM != (NETIF_F_GSO_GRE_CSUM >> NETIF_F_GSO_SHIFT)); |
| 3707 | BUILD_BUG_ON(SKB_GSO_IPIP != (NETIF_F_GSO_IPIP >> NETIF_F_GSO_SHIFT)); |
| 3708 | BUILD_BUG_ON(SKB_GSO_SIT != (NETIF_F_GSO_SIT >> NETIF_F_GSO_SHIFT)); |
| 3709 | BUILD_BUG_ON(SKB_GSO_UDP_TUNNEL != (NETIF_F_GSO_UDP_TUNNEL >> NETIF_F_GSO_SHIFT)); |
| 3710 | BUILD_BUG_ON(SKB_GSO_UDP_TUNNEL_CSUM != (NETIF_F_GSO_UDP_TUNNEL_CSUM >> NETIF_F_GSO_SHIFT)); |
Tom Herbert | e585f23 | 2014-11-04 09:06:54 -0800 | [diff] [blame] | 3711 | BUILD_BUG_ON(SKB_GSO_TUNNEL_REMCSUM != (NETIF_F_GSO_TUNNEL_REMCSUM >> NETIF_F_GSO_SHIFT)); |
Michał Mirosław | 0345e18 | 2011-11-16 14:05:33 +0000 | [diff] [blame] | 3712 | |
Herbert Xu | bcd7611 | 2006-06-30 13:36:35 -0700 | [diff] [blame] | 3713 | return (features & feature) == feature; |
| 3714 | } |
| 3715 | |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 3716 | static inline bool skb_gso_ok(struct sk_buff *skb, netdev_features_t features) |
Herbert Xu | 576a30e | 2006-06-27 13:22:38 -0700 | [diff] [blame] | 3717 | { |
Herbert Xu | 278b251 | 2009-06-03 21:20:51 -0700 | [diff] [blame] | 3718 | return net_gso_ok(features, skb_shinfo(skb)->gso_type) && |
David S. Miller | 21dc330 | 2010-08-23 00:13:46 -0700 | [diff] [blame] | 3719 | (!skb_has_frag_list(skb) || (features & NETIF_F_FRAGLIST)); |
Herbert Xu | 576a30e | 2006-06-27 13:22:38 -0700 | [diff] [blame] | 3720 | } |
| 3721 | |
Johannes Berg | 8b86a61 | 2015-04-17 15:45:04 +0200 | [diff] [blame] | 3722 | static inline bool netif_needs_gso(struct sk_buff *skb, |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 3723 | netdev_features_t features) |
Herbert Xu | 7967168 | 2006-06-22 02:40:14 -0700 | [diff] [blame] | 3724 | { |
Jesse Gross | fc74121 | 2011-01-09 06:23:32 +0000 | [diff] [blame] | 3725 | return skb_is_gso(skb) && (!skb_gso_ok(skb, features) || |
Yi Zou | cdbee74 | 2012-03-16 23:08:11 +0000 | [diff] [blame] | 3726 | unlikely((skb->ip_summed != CHECKSUM_PARTIAL) && |
| 3727 | (skb->ip_summed != CHECKSUM_UNNECESSARY))); |
Herbert Xu | 7967168 | 2006-06-22 02:40:14 -0700 | [diff] [blame] | 3728 | } |
| 3729 | |
Peter P Waskiewicz Jr | 82cc1a7 | 2008-03-21 03:43:19 -0700 | [diff] [blame] | 3730 | static inline void netif_set_gso_max_size(struct net_device *dev, |
| 3731 | unsigned int size) |
| 3732 | { |
| 3733 | dev->gso_max_size = size; |
| 3734 | } |
| 3735 | |
Wei-Chun Chao | 7a7ffba | 2013-12-26 13:10:22 -0800 | [diff] [blame] | 3736 | static inline void skb_gso_error_unwind(struct sk_buff *skb, __be16 protocol, |
| 3737 | int pulled_hlen, u16 mac_offset, |
| 3738 | int mac_len) |
| 3739 | { |
| 3740 | skb->protocol = protocol; |
| 3741 | skb->encapsulation = 1; |
| 3742 | skb_push(skb, pulled_hlen); |
| 3743 | skb_reset_transport_header(skb); |
| 3744 | skb->mac_header = mac_offset; |
| 3745 | skb->network_header = skb->mac_header + mac_len; |
| 3746 | skb->mac_len = mac_len; |
| 3747 | } |
| 3748 | |
John Fastabend | a6cc0cf | 2013-11-06 09:54:46 -0800 | [diff] [blame] | 3749 | static inline bool netif_is_macvlan(struct net_device *dev) |
| 3750 | { |
| 3751 | return dev->priv_flags & IFF_MACVLAN; |
| 3752 | } |
| 3753 | |
Mahesh Bandewar | 2f33e7d | 2014-12-06 15:53:04 -0800 | [diff] [blame] | 3754 | static inline bool netif_is_macvlan_port(struct net_device *dev) |
| 3755 | { |
| 3756 | return dev->priv_flags & IFF_MACVLAN_PORT; |
| 3757 | } |
| 3758 | |
Mahesh Bandewar | 5933fea | 2014-12-06 15:53:33 -0800 | [diff] [blame] | 3759 | static inline bool netif_is_ipvlan(struct net_device *dev) |
| 3760 | { |
| 3761 | return dev->priv_flags & IFF_IPVLAN_SLAVE; |
| 3762 | } |
| 3763 | |
| 3764 | static inline bool netif_is_ipvlan_port(struct net_device *dev) |
| 3765 | { |
| 3766 | return dev->priv_flags & IFF_IPVLAN_MASTER; |
| 3767 | } |
| 3768 | |
nikolay@redhat.com | 8a7fbfa | 2013-03-12 02:49:01 +0000 | [diff] [blame] | 3769 | static inline bool netif_is_bond_master(struct net_device *dev) |
| 3770 | { |
| 3771 | return dev->flags & IFF_MASTER && dev->priv_flags & IFF_BONDING; |
| 3772 | } |
| 3773 | |
David S. Miller | 4d29515 | 2012-03-07 21:02:35 -0500 | [diff] [blame] | 3774 | static inline bool netif_is_bond_slave(struct net_device *dev) |
Jiri Pirko | 1765a57 | 2011-02-12 06:48:36 +0000 | [diff] [blame] | 3775 | { |
| 3776 | return dev->flags & IFF_SLAVE && dev->priv_flags & IFF_BONDING; |
| 3777 | } |
| 3778 | |
Ben Greear | 3bdc0eb | 2012-02-11 15:39:30 +0000 | [diff] [blame] | 3779 | static inline bool netif_supports_nofcs(struct net_device *dev) |
| 3780 | { |
| 3781 | return dev->priv_flags & IFF_SUPP_NOFCS; |
| 3782 | } |
| 3783 | |
Eric Dumazet | 0287587 | 2014-10-05 18:38:35 -0700 | [diff] [blame] | 3784 | /* This device needs to keep skb dst for qdisc enqueue or ndo_start_xmit() */ |
| 3785 | static inline void netif_keep_dst(struct net_device *dev) |
| 3786 | { |
| 3787 | dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_XMIT_DST_RELEASE_PERM); |
| 3788 | } |
| 3789 | |
Eric W. Biederman | 505d4f7 | 2008-11-07 22:54:20 -0800 | [diff] [blame] | 3790 | extern struct pernet_operations __net_initdata loopback_net_ops; |
Patrick McHardy | b1b67dd | 2009-04-20 04:49:28 +0000 | [diff] [blame] | 3791 | |
Joe Perches | 571ba42 | 2010-02-09 11:49:47 +0000 | [diff] [blame] | 3792 | /* Logging, debugging and troubleshooting/diagnostic helpers. */ |
| 3793 | |
| 3794 | /* netdev_printk helpers, similar to dev_printk */ |
| 3795 | |
| 3796 | static inline const char *netdev_name(const struct net_device *dev) |
| 3797 | { |
Veaceslav Falico | c6f854d | 2014-07-17 19:46:09 +0200 | [diff] [blame] | 3798 | if (!dev->name[0] || strchr(dev->name, '%')) |
| 3799 | return "(unnamed net_device)"; |
Joe Perches | 571ba42 | 2010-02-09 11:49:47 +0000 | [diff] [blame] | 3800 | return dev->name; |
| 3801 | } |
| 3802 | |
Veaceslav Falico | ccc7f49 | 2014-07-17 19:46:10 +0200 | [diff] [blame] | 3803 | static inline const char *netdev_reg_state(const struct net_device *dev) |
| 3804 | { |
| 3805 | switch (dev->reg_state) { |
| 3806 | case NETREG_UNINITIALIZED: return " (uninitialized)"; |
| 3807 | case NETREG_REGISTERED: return ""; |
| 3808 | case NETREG_UNREGISTERING: return " (unregistering)"; |
| 3809 | case NETREG_UNREGISTERED: return " (unregistered)"; |
| 3810 | case NETREG_RELEASED: return " (released)"; |
| 3811 | case NETREG_DUMMY: return " (dummy)"; |
| 3812 | } |
| 3813 | |
| 3814 | WARN_ONCE(1, "%s: unknown reg_state %d\n", dev->name, dev->reg_state); |
| 3815 | return " (unknown)"; |
| 3816 | } |
| 3817 | |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 3818 | __printf(3, 4) |
Joe Perches | 6ea754e | 2014-09-22 11:10:50 -0700 | [diff] [blame] | 3819 | void netdev_printk(const char *level, const struct net_device *dev, |
| 3820 | const char *format, ...); |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 3821 | __printf(2, 3) |
Joe Perches | 6ea754e | 2014-09-22 11:10:50 -0700 | [diff] [blame] | 3822 | void netdev_emerg(const struct net_device *dev, const char *format, ...); |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 3823 | __printf(2, 3) |
Joe Perches | 6ea754e | 2014-09-22 11:10:50 -0700 | [diff] [blame] | 3824 | void netdev_alert(const struct net_device *dev, const char *format, ...); |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 3825 | __printf(2, 3) |
Joe Perches | 6ea754e | 2014-09-22 11:10:50 -0700 | [diff] [blame] | 3826 | void netdev_crit(const struct net_device *dev, const char *format, ...); |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 3827 | __printf(2, 3) |
Joe Perches | 6ea754e | 2014-09-22 11:10:50 -0700 | [diff] [blame] | 3828 | void netdev_err(const struct net_device *dev, const char *format, ...); |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 3829 | __printf(2, 3) |
Joe Perches | 6ea754e | 2014-09-22 11:10:50 -0700 | [diff] [blame] | 3830 | void netdev_warn(const struct net_device *dev, const char *format, ...); |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 3831 | __printf(2, 3) |
Joe Perches | 6ea754e | 2014-09-22 11:10:50 -0700 | [diff] [blame] | 3832 | void netdev_notice(const struct net_device *dev, const char *format, ...); |
Joe Perches | f629d20 | 2013-09-26 14:48:15 -0700 | [diff] [blame] | 3833 | __printf(2, 3) |
Joe Perches | 6ea754e | 2014-09-22 11:10:50 -0700 | [diff] [blame] | 3834 | void netdev_info(const struct net_device *dev, const char *format, ...); |
Joe Perches | 571ba42 | 2010-02-09 11:49:47 +0000 | [diff] [blame] | 3835 | |
Vasiliy Kulikov | 8909c9a | 2011-03-02 00:33:13 +0300 | [diff] [blame] | 3836 | #define MODULE_ALIAS_NETDEV(device) \ |
| 3837 | MODULE_ALIAS("netdev-" device) |
| 3838 | |
Jim Cromie | b558c96 | 2011-12-19 17:11:18 -0500 | [diff] [blame] | 3839 | #if defined(CONFIG_DYNAMIC_DEBUG) |
Joe Perches | 571ba42 | 2010-02-09 11:49:47 +0000 | [diff] [blame] | 3840 | #define netdev_dbg(__dev, format, args...) \ |
| 3841 | do { \ |
Jason Baron | ffa10cb | 2011-08-11 14:36:48 -0400 | [diff] [blame] | 3842 | dynamic_netdev_dbg(__dev, format, ##args); \ |
Joe Perches | 571ba42 | 2010-02-09 11:49:47 +0000 | [diff] [blame] | 3843 | } while (0) |
Jim Cromie | b558c96 | 2011-12-19 17:11:18 -0500 | [diff] [blame] | 3844 | #elif defined(DEBUG) |
| 3845 | #define netdev_dbg(__dev, format, args...) \ |
| 3846 | netdev_printk(KERN_DEBUG, __dev, format, ##args) |
Joe Perches | 571ba42 | 2010-02-09 11:49:47 +0000 | [diff] [blame] | 3847 | #else |
| 3848 | #define netdev_dbg(__dev, format, args...) \ |
| 3849 | ({ \ |
| 3850 | if (0) \ |
| 3851 | netdev_printk(KERN_DEBUG, __dev, format, ##args); \ |
Joe Perches | 571ba42 | 2010-02-09 11:49:47 +0000 | [diff] [blame] | 3852 | }) |
| 3853 | #endif |
| 3854 | |
| 3855 | #if defined(VERBOSE_DEBUG) |
| 3856 | #define netdev_vdbg netdev_dbg |
| 3857 | #else |
| 3858 | |
| 3859 | #define netdev_vdbg(dev, format, args...) \ |
| 3860 | ({ \ |
| 3861 | if (0) \ |
| 3862 | netdev_printk(KERN_DEBUG, dev, format, ##args); \ |
| 3863 | 0; \ |
| 3864 | }) |
| 3865 | #endif |
| 3866 | |
| 3867 | /* |
| 3868 | * netdev_WARN() acts like dev_printk(), but with the key difference |
| 3869 | * of using a WARN/WARN_ON to get the message out, including the |
| 3870 | * file/line information and a backtrace. |
| 3871 | */ |
| 3872 | #define netdev_WARN(dev, format, args...) \ |
Veaceslav Falico | ccc7f49 | 2014-07-17 19:46:10 +0200 | [diff] [blame] | 3873 | WARN(1, "netdevice: %s%s\n" format, netdev_name(dev), \ |
| 3874 | netdev_reg_state(dev), ##args) |
Joe Perches | 571ba42 | 2010-02-09 11:49:47 +0000 | [diff] [blame] | 3875 | |
Joe Perches | b3d95c5 | 2010-02-09 11:49:49 +0000 | [diff] [blame] | 3876 | /* netif printk helpers, similar to netdev_printk */ |
| 3877 | |
| 3878 | #define netif_printk(priv, type, level, dev, fmt, args...) \ |
| 3879 | do { \ |
| 3880 | if (netif_msg_##type(priv)) \ |
| 3881 | netdev_printk(level, (dev), fmt, ##args); \ |
| 3882 | } while (0) |
| 3883 | |
Joe Perches | f45f432 | 2010-06-27 01:02:36 +0000 | [diff] [blame] | 3884 | #define netif_level(level, priv, type, dev, fmt, args...) \ |
| 3885 | do { \ |
| 3886 | if (netif_msg_##type(priv)) \ |
| 3887 | netdev_##level(dev, fmt, ##args); \ |
| 3888 | } while (0) |
| 3889 | |
Joe Perches | b3d95c5 | 2010-02-09 11:49:49 +0000 | [diff] [blame] | 3890 | #define netif_emerg(priv, type, dev, fmt, args...) \ |
Joe Perches | f45f432 | 2010-06-27 01:02:36 +0000 | [diff] [blame] | 3891 | netif_level(emerg, priv, type, dev, fmt, ##args) |
Joe Perches | b3d95c5 | 2010-02-09 11:49:49 +0000 | [diff] [blame] | 3892 | #define netif_alert(priv, type, dev, fmt, args...) \ |
Joe Perches | f45f432 | 2010-06-27 01:02:36 +0000 | [diff] [blame] | 3893 | netif_level(alert, priv, type, dev, fmt, ##args) |
Joe Perches | b3d95c5 | 2010-02-09 11:49:49 +0000 | [diff] [blame] | 3894 | #define netif_crit(priv, type, dev, fmt, args...) \ |
Joe Perches | f45f432 | 2010-06-27 01:02:36 +0000 | [diff] [blame] | 3895 | netif_level(crit, priv, type, dev, fmt, ##args) |
Joe Perches | b3d95c5 | 2010-02-09 11:49:49 +0000 | [diff] [blame] | 3896 | #define netif_err(priv, type, dev, fmt, args...) \ |
Joe Perches | f45f432 | 2010-06-27 01:02:36 +0000 | [diff] [blame] | 3897 | netif_level(err, priv, type, dev, fmt, ##args) |
Joe Perches | b3d95c5 | 2010-02-09 11:49:49 +0000 | [diff] [blame] | 3898 | #define netif_warn(priv, type, dev, fmt, args...) \ |
Joe Perches | f45f432 | 2010-06-27 01:02:36 +0000 | [diff] [blame] | 3899 | netif_level(warn, priv, type, dev, fmt, ##args) |
Joe Perches | b3d95c5 | 2010-02-09 11:49:49 +0000 | [diff] [blame] | 3900 | #define netif_notice(priv, type, dev, fmt, args...) \ |
Joe Perches | f45f432 | 2010-06-27 01:02:36 +0000 | [diff] [blame] | 3901 | netif_level(notice, priv, type, dev, fmt, ##args) |
Joe Perches | b3d95c5 | 2010-02-09 11:49:49 +0000 | [diff] [blame] | 3902 | #define netif_info(priv, type, dev, fmt, args...) \ |
Joe Perches | f45f432 | 2010-06-27 01:02:36 +0000 | [diff] [blame] | 3903 | netif_level(info, priv, type, dev, fmt, ##args) |
Joe Perches | b3d95c5 | 2010-02-09 11:49:49 +0000 | [diff] [blame] | 3904 | |
Joe Perches | 0053ea9 | 2012-05-30 07:43:34 +0000 | [diff] [blame] | 3905 | #if defined(CONFIG_DYNAMIC_DEBUG) |
Joe Perches | b3d95c5 | 2010-02-09 11:49:49 +0000 | [diff] [blame] | 3906 | #define netif_dbg(priv, type, netdev, format, args...) \ |
| 3907 | do { \ |
| 3908 | if (netif_msg_##type(priv)) \ |
Jason Baron | b5fb0a0 | 2011-08-11 14:36:53 -0400 | [diff] [blame] | 3909 | dynamic_netdev_dbg(netdev, format, ##args); \ |
Joe Perches | b3d95c5 | 2010-02-09 11:49:49 +0000 | [diff] [blame] | 3910 | } while (0) |
Joe Perches | 0053ea9 | 2012-05-30 07:43:34 +0000 | [diff] [blame] | 3911 | #elif defined(DEBUG) |
| 3912 | #define netif_dbg(priv, type, dev, format, args...) \ |
| 3913 | netif_printk(priv, type, KERN_DEBUG, dev, format, ##args) |
Joe Perches | b3d95c5 | 2010-02-09 11:49:49 +0000 | [diff] [blame] | 3914 | #else |
| 3915 | #define netif_dbg(priv, type, dev, format, args...) \ |
| 3916 | ({ \ |
| 3917 | if (0) \ |
| 3918 | netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \ |
| 3919 | 0; \ |
| 3920 | }) |
| 3921 | #endif |
| 3922 | |
| 3923 | #if defined(VERBOSE_DEBUG) |
Ben Hutchings | bcfcc45 | 2010-07-02 07:08:44 +0000 | [diff] [blame] | 3924 | #define netif_vdbg netif_dbg |
Joe Perches | b3d95c5 | 2010-02-09 11:49:49 +0000 | [diff] [blame] | 3925 | #else |
| 3926 | #define netif_vdbg(priv, type, dev, format, args...) \ |
| 3927 | ({ \ |
| 3928 | if (0) \ |
Ben Hutchings | a4ed89c | 2010-05-18 06:56:32 +0000 | [diff] [blame] | 3929 | netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \ |
Joe Perches | b3d95c5 | 2010-02-09 11:49:49 +0000 | [diff] [blame] | 3930 | 0; \ |
| 3931 | }) |
| 3932 | #endif |
Joe Perches | 571ba42 | 2010-02-09 11:49:47 +0000 | [diff] [blame] | 3933 | |
Cong Wang | 900ff8c | 2013-02-18 19:20:33 +0000 | [diff] [blame] | 3934 | /* |
| 3935 | * The list of packet types we will receive (as opposed to discard) |
| 3936 | * and the routines to invoke. |
| 3937 | * |
| 3938 | * Why 16. Because with 16 the only overlap we get on a hash of the |
| 3939 | * low nibble of the protocol value is RARP/SNAP/X.25. |
| 3940 | * |
| 3941 | * NOTE: That is no longer true with the addition of VLAN tags. Not |
| 3942 | * sure which should go first, but I bet it won't make much |
| 3943 | * difference if we are running VLANs. The good news is that |
| 3944 | * this protocol won't be in the list unless compiled in, so |
| 3945 | * the average user (w/out VLANs) will not be adversely affected. |
| 3946 | * --BLG |
| 3947 | * |
| 3948 | * 0800 IP |
| 3949 | * 8100 802.1Q VLAN |
| 3950 | * 0001 802.3 |
| 3951 | * 0002 AX.25 |
| 3952 | * 0004 802.2 |
| 3953 | * 8035 RARP |
| 3954 | * 0005 SNAP |
| 3955 | * 0805 X.25 |
| 3956 | * 0806 ARP |
| 3957 | * 8137 IPX |
| 3958 | * 0009 Localtalk |
| 3959 | * 86DD IPv6 |
| 3960 | */ |
| 3961 | #define PTYPE_HASH_SIZE (16) |
| 3962 | #define PTYPE_HASH_MASK (PTYPE_HASH_SIZE - 1) |
| 3963 | |
Jiri Pirko | 385a154 | 2009-05-27 15:48:07 -0700 | [diff] [blame] | 3964 | #endif /* _LINUX_NETDEVICE_H */ |