| /* |
| * net/dsa/slave.c - Slave device handling |
| * Copyright (c) 2008-2009 Marvell Semiconductor |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| */ |
| |
| #include <linux/list.h> |
| #include <linux/etherdevice.h> |
| #include <linux/netdevice.h> |
| #include <linux/phy.h> |
| #include <linux/phy_fixed.h> |
| #include <linux/of_net.h> |
| #include <linux/of_mdio.h> |
| #include <linux/mdio.h> |
| #include <linux/list.h> |
| #include <net/rtnetlink.h> |
| #include <net/pkt_cls.h> |
| #include <net/tc_act/tc_mirred.h> |
| #include <linux/if_bridge.h> |
| #include <linux/netpoll.h> |
| |
| #include "dsa_priv.h" |
| |
| static bool dsa_slave_dev_check(struct net_device *dev); |
| |
| /* slave mii_bus handling ***************************************************/ |
| static int dsa_slave_phy_read(struct mii_bus *bus, int addr, int reg) |
| { |
| struct dsa_switch *ds = bus->priv; |
| |
| if (ds->phys_mii_mask & (1 << addr)) |
| return ds->ops->phy_read(ds, addr, reg); |
| |
| return 0xffff; |
| } |
| |
| static int dsa_slave_phy_write(struct mii_bus *bus, int addr, int reg, u16 val) |
| { |
| struct dsa_switch *ds = bus->priv; |
| |
| if (ds->phys_mii_mask & (1 << addr)) |
| return ds->ops->phy_write(ds, addr, reg, val); |
| |
| return 0; |
| } |
| |
| void dsa_slave_mii_bus_init(struct dsa_switch *ds) |
| { |
| ds->slave_mii_bus->priv = (void *)ds; |
| ds->slave_mii_bus->name = "dsa slave smi"; |
| ds->slave_mii_bus->read = dsa_slave_phy_read; |
| ds->slave_mii_bus->write = dsa_slave_phy_write; |
| snprintf(ds->slave_mii_bus->id, MII_BUS_ID_SIZE, "dsa-%d.%d", |
| ds->dst->tree, ds->index); |
| ds->slave_mii_bus->parent = ds->dev; |
| ds->slave_mii_bus->phy_mask = ~ds->phys_mii_mask; |
| } |
| |
| |
| /* slave device handling ****************************************************/ |
| static int dsa_slave_get_iflink(const struct net_device *dev) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| |
| return dsa_master_netdev(p)->ifindex; |
| } |
| |
| static int dsa_slave_open(struct net_device *dev) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_port *dp = p->dp; |
| struct dsa_switch *ds = dp->ds; |
| struct net_device *master = dsa_master_netdev(p); |
| u8 stp_state = dp->bridge_dev ? BR_STATE_BLOCKING : BR_STATE_FORWARDING; |
| int err; |
| |
| if (!(master->flags & IFF_UP)) |
| return -ENETDOWN; |
| |
| if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) { |
| err = dev_uc_add(master, dev->dev_addr); |
| if (err < 0) |
| goto out; |
| } |
| |
| if (dev->flags & IFF_ALLMULTI) { |
| err = dev_set_allmulti(master, 1); |
| if (err < 0) |
| goto del_unicast; |
| } |
| if (dev->flags & IFF_PROMISC) { |
| err = dev_set_promiscuity(master, 1); |
| if (err < 0) |
| goto clear_allmulti; |
| } |
| |
| if (ds->ops->port_enable) { |
| err = ds->ops->port_enable(ds, p->dp->index, p->phy); |
| if (err) |
| goto clear_promisc; |
| } |
| |
| dsa_port_set_state_now(p->dp, stp_state); |
| |
| if (p->phy) |
| phy_start(p->phy); |
| |
| return 0; |
| |
| clear_promisc: |
| if (dev->flags & IFF_PROMISC) |
| dev_set_promiscuity(master, -1); |
| clear_allmulti: |
| if (dev->flags & IFF_ALLMULTI) |
| dev_set_allmulti(master, -1); |
| del_unicast: |
| if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) |
| dev_uc_del(master, dev->dev_addr); |
| out: |
| return err; |
| } |
| |
| static int dsa_slave_close(struct net_device *dev) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct net_device *master = dsa_master_netdev(p); |
| struct dsa_switch *ds = p->dp->ds; |
| |
| if (p->phy) |
| phy_stop(p->phy); |
| |
| dev_mc_unsync(master, dev); |
| dev_uc_unsync(master, dev); |
| if (dev->flags & IFF_ALLMULTI) |
| dev_set_allmulti(master, -1); |
| if (dev->flags & IFF_PROMISC) |
| dev_set_promiscuity(master, -1); |
| |
| if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) |
| dev_uc_del(master, dev->dev_addr); |
| |
| if (ds->ops->port_disable) |
| ds->ops->port_disable(ds, p->dp->index, p->phy); |
| |
| dsa_port_set_state_now(p->dp, BR_STATE_DISABLED); |
| |
| return 0; |
| } |
| |
| static void dsa_slave_change_rx_flags(struct net_device *dev, int change) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct net_device *master = dsa_master_netdev(p); |
| |
| if (change & IFF_ALLMULTI) |
| dev_set_allmulti(master, dev->flags & IFF_ALLMULTI ? 1 : -1); |
| if (change & IFF_PROMISC) |
| dev_set_promiscuity(master, dev->flags & IFF_PROMISC ? 1 : -1); |
| } |
| |
| static void dsa_slave_set_rx_mode(struct net_device *dev) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct net_device *master = dsa_master_netdev(p); |
| |
| dev_mc_sync(master, dev); |
| dev_uc_sync(master, dev); |
| } |
| |
| static int dsa_slave_set_mac_address(struct net_device *dev, void *a) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct net_device *master = dsa_master_netdev(p); |
| struct sockaddr *addr = a; |
| int err; |
| |
| if (!is_valid_ether_addr(addr->sa_data)) |
| return -EADDRNOTAVAIL; |
| |
| if (!(dev->flags & IFF_UP)) |
| goto out; |
| |
| if (!ether_addr_equal(addr->sa_data, master->dev_addr)) { |
| err = dev_uc_add(master, addr->sa_data); |
| if (err < 0) |
| return err; |
| } |
| |
| if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) |
| dev_uc_del(master, dev->dev_addr); |
| |
| out: |
| ether_addr_copy(dev->dev_addr, addr->sa_data); |
| |
| return 0; |
| } |
| |
| struct dsa_slave_dump_ctx { |
| struct net_device *dev; |
| struct sk_buff *skb; |
| struct netlink_callback *cb; |
| int idx; |
| }; |
| |
| static int |
| dsa_slave_port_fdb_do_dump(const unsigned char *addr, u16 vid, |
| bool is_static, void *data) |
| { |
| struct dsa_slave_dump_ctx *dump = data; |
| u32 portid = NETLINK_CB(dump->cb->skb).portid; |
| u32 seq = dump->cb->nlh->nlmsg_seq; |
| struct nlmsghdr *nlh; |
| struct ndmsg *ndm; |
| |
| if (dump->idx < dump->cb->args[2]) |
| goto skip; |
| |
| nlh = nlmsg_put(dump->skb, portid, seq, RTM_NEWNEIGH, |
| sizeof(*ndm), NLM_F_MULTI); |
| if (!nlh) |
| return -EMSGSIZE; |
| |
| ndm = nlmsg_data(nlh); |
| ndm->ndm_family = AF_BRIDGE; |
| ndm->ndm_pad1 = 0; |
| ndm->ndm_pad2 = 0; |
| ndm->ndm_flags = NTF_SELF; |
| ndm->ndm_type = 0; |
| ndm->ndm_ifindex = dump->dev->ifindex; |
| ndm->ndm_state = is_static ? NUD_NOARP : NUD_REACHABLE; |
| |
| if (nla_put(dump->skb, NDA_LLADDR, ETH_ALEN, addr)) |
| goto nla_put_failure; |
| |
| if (vid && nla_put_u16(dump->skb, NDA_VLAN, vid)) |
| goto nla_put_failure; |
| |
| nlmsg_end(dump->skb, nlh); |
| |
| skip: |
| dump->idx++; |
| return 0; |
| |
| nla_put_failure: |
| nlmsg_cancel(dump->skb, nlh); |
| return -EMSGSIZE; |
| } |
| |
| static int |
| dsa_slave_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb, |
| struct net_device *dev, struct net_device *filter_dev, |
| int *idx) |
| { |
| struct dsa_slave_dump_ctx dump = { |
| .dev = dev, |
| .skb = skb, |
| .cb = cb, |
| .idx = *idx, |
| }; |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_port *dp = p->dp; |
| struct dsa_switch *ds = dp->ds; |
| int err; |
| |
| if (!ds->ops->port_fdb_dump) |
| return -EOPNOTSUPP; |
| |
| err = ds->ops->port_fdb_dump(ds, dp->index, |
| dsa_slave_port_fdb_do_dump, |
| &dump); |
| *idx = dump.idx; |
| return err; |
| } |
| |
| static int dsa_slave_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| |
| if (p->phy != NULL) |
| return phy_mii_ioctl(p->phy, ifr, cmd); |
| |
| return -EOPNOTSUPP; |
| } |
| |
| static int dsa_slave_port_attr_set(struct net_device *dev, |
| const struct switchdev_attr *attr, |
| struct switchdev_trans *trans) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_port *dp = p->dp; |
| int ret; |
| |
| switch (attr->id) { |
| case SWITCHDEV_ATTR_ID_PORT_STP_STATE: |
| ret = dsa_port_set_state(dp, attr->u.stp_state, trans); |
| break; |
| case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING: |
| ret = dsa_port_vlan_filtering(dp, attr->u.vlan_filtering, |
| trans); |
| break; |
| case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME: |
| ret = dsa_port_ageing_time(dp, attr->u.ageing_time, trans); |
| break; |
| default: |
| ret = -EOPNOTSUPP; |
| break; |
| } |
| |
| return ret; |
| } |
| |
| static int dsa_slave_port_obj_add(struct net_device *dev, |
| const struct switchdev_obj *obj, |
| struct switchdev_trans *trans) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_port *dp = p->dp; |
| int err; |
| |
| /* For the prepare phase, ensure the full set of changes is feasable in |
| * one go in order to signal a failure properly. If an operation is not |
| * supported, return -EOPNOTSUPP. |
| */ |
| |
| switch (obj->id) { |
| case SWITCHDEV_OBJ_ID_PORT_MDB: |
| err = dsa_port_mdb_add(dp, SWITCHDEV_OBJ_PORT_MDB(obj), trans); |
| break; |
| case SWITCHDEV_OBJ_ID_PORT_VLAN: |
| err = dsa_port_vlan_add(dp, SWITCHDEV_OBJ_PORT_VLAN(obj), |
| trans); |
| break; |
| default: |
| err = -EOPNOTSUPP; |
| break; |
| } |
| |
| return err; |
| } |
| |
| static int dsa_slave_port_obj_del(struct net_device *dev, |
| const struct switchdev_obj *obj) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_port *dp = p->dp; |
| int err; |
| |
| switch (obj->id) { |
| case SWITCHDEV_OBJ_ID_PORT_MDB: |
| err = dsa_port_mdb_del(dp, SWITCHDEV_OBJ_PORT_MDB(obj)); |
| break; |
| case SWITCHDEV_OBJ_ID_PORT_VLAN: |
| err = dsa_port_vlan_del(dp, SWITCHDEV_OBJ_PORT_VLAN(obj)); |
| break; |
| default: |
| err = -EOPNOTSUPP; |
| break; |
| } |
| |
| return err; |
| } |
| |
| static int dsa_slave_port_attr_get(struct net_device *dev, |
| struct switchdev_attr *attr) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->dp->ds; |
| |
| switch (attr->id) { |
| case SWITCHDEV_ATTR_ID_PORT_PARENT_ID: |
| attr->u.ppid.id_len = sizeof(ds->index); |
| memcpy(&attr->u.ppid.id, &ds->index, attr->u.ppid.id_len); |
| break; |
| case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS_SUPPORT: |
| attr->u.brport_flags_support = 0; |
| break; |
| default: |
| return -EOPNOTSUPP; |
| } |
| |
| return 0; |
| } |
| |
| static inline netdev_tx_t dsa_netpoll_send_skb(struct dsa_slave_priv *p, |
| struct sk_buff *skb) |
| { |
| #ifdef CONFIG_NET_POLL_CONTROLLER |
| if (p->netpoll) |
| netpoll_send_skb(p->netpoll, skb); |
| #else |
| BUG(); |
| #endif |
| return NETDEV_TX_OK; |
| } |
| |
| static netdev_tx_t dsa_slave_xmit(struct sk_buff *skb, struct net_device *dev) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct pcpu_sw_netstats *s; |
| struct sk_buff *nskb; |
| |
| s = this_cpu_ptr(p->stats64); |
| u64_stats_update_begin(&s->syncp); |
| s->tx_packets++; |
| s->tx_bytes += skb->len; |
| u64_stats_update_end(&s->syncp); |
| |
| /* Transmit function may have to reallocate the original SKB, |
| * in which case it must have freed it. Only free it here on error. |
| */ |
| nskb = p->xmit(skb, dev); |
| if (!nskb) { |
| kfree_skb(skb); |
| return NETDEV_TX_OK; |
| } |
| |
| /* SKB for netpoll still need to be mangled with the protocol-specific |
| * tag to be successfully transmitted |
| */ |
| if (unlikely(netpoll_tx_running(dev))) |
| return dsa_netpoll_send_skb(p, nskb); |
| |
| /* Queue the SKB for transmission on the parent interface, but |
| * do not modify its EtherType |
| */ |
| nskb->dev = dsa_master_netdev(p); |
| dev_queue_xmit(nskb); |
| |
| return NETDEV_TX_OK; |
| } |
| |
| /* ethtool operations *******************************************************/ |
| static int |
| dsa_slave_get_link_ksettings(struct net_device *dev, |
| struct ethtool_link_ksettings *cmd) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| |
| if (!p->phy) |
| return -EOPNOTSUPP; |
| |
| phy_ethtool_ksettings_get(p->phy, cmd); |
| |
| return 0; |
| } |
| |
| static int |
| dsa_slave_set_link_ksettings(struct net_device *dev, |
| const struct ethtool_link_ksettings *cmd) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| |
| if (p->phy != NULL) |
| return phy_ethtool_ksettings_set(p->phy, cmd); |
| |
| return -EOPNOTSUPP; |
| } |
| |
| static void dsa_slave_get_drvinfo(struct net_device *dev, |
| struct ethtool_drvinfo *drvinfo) |
| { |
| strlcpy(drvinfo->driver, "dsa", sizeof(drvinfo->driver)); |
| strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version)); |
| strlcpy(drvinfo->bus_info, "platform", sizeof(drvinfo->bus_info)); |
| } |
| |
| static int dsa_slave_get_regs_len(struct net_device *dev) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->dp->ds; |
| |
| if (ds->ops->get_regs_len) |
| return ds->ops->get_regs_len(ds, p->dp->index); |
| |
| return -EOPNOTSUPP; |
| } |
| |
| static void |
| dsa_slave_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *_p) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->dp->ds; |
| |
| if (ds->ops->get_regs) |
| ds->ops->get_regs(ds, p->dp->index, regs, _p); |
| } |
| |
| static int dsa_slave_nway_reset(struct net_device *dev) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| |
| if (p->phy != NULL) |
| return genphy_restart_aneg(p->phy); |
| |
| return -EOPNOTSUPP; |
| } |
| |
| static u32 dsa_slave_get_link(struct net_device *dev) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| |
| if (p->phy != NULL) { |
| genphy_update_link(p->phy); |
| return p->phy->link; |
| } |
| |
| return -EOPNOTSUPP; |
| } |
| |
| static int dsa_slave_get_eeprom_len(struct net_device *dev) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->dp->ds; |
| |
| if (ds->cd && ds->cd->eeprom_len) |
| return ds->cd->eeprom_len; |
| |
| if (ds->ops->get_eeprom_len) |
| return ds->ops->get_eeprom_len(ds); |
| |
| return 0; |
| } |
| |
| static int dsa_slave_get_eeprom(struct net_device *dev, |
| struct ethtool_eeprom *eeprom, u8 *data) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->dp->ds; |
| |
| if (ds->ops->get_eeprom) |
| return ds->ops->get_eeprom(ds, eeprom, data); |
| |
| return -EOPNOTSUPP; |
| } |
| |
| static int dsa_slave_set_eeprom(struct net_device *dev, |
| struct ethtool_eeprom *eeprom, u8 *data) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->dp->ds; |
| |
| if (ds->ops->set_eeprom) |
| return ds->ops->set_eeprom(ds, eeprom, data); |
| |
| return -EOPNOTSUPP; |
| } |
| |
| static void dsa_slave_get_strings(struct net_device *dev, |
| uint32_t stringset, uint8_t *data) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->dp->ds; |
| |
| if (stringset == ETH_SS_STATS) { |
| int len = ETH_GSTRING_LEN; |
| |
| strncpy(data, "tx_packets", len); |
| strncpy(data + len, "tx_bytes", len); |
| strncpy(data + 2 * len, "rx_packets", len); |
| strncpy(data + 3 * len, "rx_bytes", len); |
| if (ds->ops->get_strings) |
| ds->ops->get_strings(ds, p->dp->index, data + 4 * len); |
| } |
| } |
| |
| static void dsa_cpu_port_get_ethtool_stats(struct net_device *dev, |
| struct ethtool_stats *stats, |
| uint64_t *data) |
| { |
| struct dsa_switch_tree *dst = dev->dsa_ptr; |
| struct dsa_port *cpu_dp = dsa_get_cpu_port(dst); |
| struct dsa_switch *ds = cpu_dp->ds; |
| s8 cpu_port = cpu_dp->index; |
| int count = 0; |
| |
| if (cpu_dp->ethtool_ops.get_sset_count) { |
| count = cpu_dp->ethtool_ops.get_sset_count(dev, ETH_SS_STATS); |
| cpu_dp->ethtool_ops.get_ethtool_stats(dev, stats, data); |
| } |
| |
| if (ds->ops->get_ethtool_stats) |
| ds->ops->get_ethtool_stats(ds, cpu_port, data + count); |
| } |
| |
| static int dsa_cpu_port_get_sset_count(struct net_device *dev, int sset) |
| { |
| struct dsa_switch_tree *dst = dev->dsa_ptr; |
| struct dsa_port *cpu_dp = dsa_get_cpu_port(dst); |
| struct dsa_switch *ds = cpu_dp->ds; |
| int count = 0; |
| |
| if (cpu_dp->ethtool_ops.get_sset_count) |
| count += cpu_dp->ethtool_ops.get_sset_count(dev, sset); |
| |
| if (sset == ETH_SS_STATS && ds->ops->get_sset_count) |
| count += ds->ops->get_sset_count(ds); |
| |
| return count; |
| } |
| |
| static void dsa_cpu_port_get_strings(struct net_device *dev, |
| uint32_t stringset, uint8_t *data) |
| { |
| struct dsa_switch_tree *dst = dev->dsa_ptr; |
| struct dsa_port *cpu_dp = dsa_get_cpu_port(dst); |
| struct dsa_switch *ds = cpu_dp->ds; |
| s8 cpu_port = cpu_dp->index; |
| int len = ETH_GSTRING_LEN; |
| int mcount = 0, count; |
| unsigned int i; |
| uint8_t pfx[4]; |
| uint8_t *ndata; |
| |
| snprintf(pfx, sizeof(pfx), "p%.2d", cpu_port); |
| /* We do not want to be NULL-terminated, since this is a prefix */ |
| pfx[sizeof(pfx) - 1] = '_'; |
| |
| if (cpu_dp->ethtool_ops.get_sset_count) { |
| mcount = cpu_dp->ethtool_ops.get_sset_count(dev, ETH_SS_STATS); |
| cpu_dp->ethtool_ops.get_strings(dev, stringset, data); |
| } |
| |
| if (stringset == ETH_SS_STATS && ds->ops->get_strings) { |
| ndata = data + mcount * len; |
| /* This function copies ETH_GSTRINGS_LEN bytes, we will mangle |
| * the output after to prepend our CPU port prefix we |
| * constructed earlier |
| */ |
| ds->ops->get_strings(ds, cpu_port, ndata); |
| count = ds->ops->get_sset_count(ds); |
| for (i = 0; i < count; i++) { |
| memmove(ndata + (i * len + sizeof(pfx)), |
| ndata + i * len, len - sizeof(pfx)); |
| memcpy(ndata + i * len, pfx, sizeof(pfx)); |
| } |
| } |
| } |
| |
| static void dsa_slave_get_ethtool_stats(struct net_device *dev, |
| struct ethtool_stats *stats, |
| uint64_t *data) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->dp->ds; |
| struct pcpu_sw_netstats *s; |
| unsigned int start; |
| int i; |
| |
| for_each_possible_cpu(i) { |
| u64 tx_packets, tx_bytes, rx_packets, rx_bytes; |
| |
| s = per_cpu_ptr(p->stats64, i); |
| do { |
| start = u64_stats_fetch_begin_irq(&s->syncp); |
| tx_packets = s->tx_packets; |
| tx_bytes = s->tx_bytes; |
| rx_packets = s->rx_packets; |
| rx_bytes = s->rx_bytes; |
| } while (u64_stats_fetch_retry_irq(&s->syncp, start)); |
| data[0] += tx_packets; |
| data[1] += tx_bytes; |
| data[2] += rx_packets; |
| data[3] += rx_bytes; |
| } |
| if (ds->ops->get_ethtool_stats) |
| ds->ops->get_ethtool_stats(ds, p->dp->index, data + 4); |
| } |
| |
| static int dsa_slave_get_sset_count(struct net_device *dev, int sset) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->dp->ds; |
| |
| if (sset == ETH_SS_STATS) { |
| int count; |
| |
| count = 4; |
| if (ds->ops->get_sset_count) |
| count += ds->ops->get_sset_count(ds); |
| |
| return count; |
| } |
| |
| return -EOPNOTSUPP; |
| } |
| |
| static void dsa_slave_get_wol(struct net_device *dev, struct ethtool_wolinfo *w) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->dp->ds; |
| |
| if (ds->ops->get_wol) |
| ds->ops->get_wol(ds, p->dp->index, w); |
| } |
| |
| static int dsa_slave_set_wol(struct net_device *dev, struct ethtool_wolinfo *w) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->dp->ds; |
| int ret = -EOPNOTSUPP; |
| |
| if (ds->ops->set_wol) |
| ret = ds->ops->set_wol(ds, p->dp->index, w); |
| |
| return ret; |
| } |
| |
| static int dsa_slave_set_eee(struct net_device *dev, struct ethtool_eee *e) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->dp->ds; |
| int ret; |
| |
| /* Port's PHY and MAC both need to be EEE capable */ |
| if (!p->phy) |
| return -ENODEV; |
| |
| if (!ds->ops->set_mac_eee) |
| return -EOPNOTSUPP; |
| |
| ret = ds->ops->set_mac_eee(ds, p->dp->index, e); |
| if (ret) |
| return ret; |
| |
| if (e->eee_enabled) { |
| ret = phy_init_eee(p->phy, 0); |
| if (ret) |
| return ret; |
| } |
| |
| return phy_ethtool_set_eee(p->phy, e); |
| } |
| |
| static int dsa_slave_get_eee(struct net_device *dev, struct ethtool_eee *e) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->dp->ds; |
| int ret; |
| |
| /* Port's PHY and MAC both need to be EEE capable */ |
| if (!p->phy) |
| return -ENODEV; |
| |
| if (!ds->ops->get_mac_eee) |
| return -EOPNOTSUPP; |
| |
| ret = ds->ops->get_mac_eee(ds, p->dp->index, e); |
| if (ret) |
| return ret; |
| |
| return phy_ethtool_get_eee(p->phy, e); |
| } |
| |
| #ifdef CONFIG_NET_POLL_CONTROLLER |
| static int dsa_slave_netpoll_setup(struct net_device *dev, |
| struct netpoll_info *ni) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct net_device *master = dsa_master_netdev(p); |
| struct netpoll *netpoll; |
| int err = 0; |
| |
| netpoll = kzalloc(sizeof(*netpoll), GFP_KERNEL); |
| if (!netpoll) |
| return -ENOMEM; |
| |
| err = __netpoll_setup(netpoll, master); |
| if (err) { |
| kfree(netpoll); |
| goto out; |
| } |
| |
| p->netpoll = netpoll; |
| out: |
| return err; |
| } |
| |
| static void dsa_slave_netpoll_cleanup(struct net_device *dev) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct netpoll *netpoll = p->netpoll; |
| |
| if (!netpoll) |
| return; |
| |
| p->netpoll = NULL; |
| |
| __netpoll_free_async(netpoll); |
| } |
| |
| static void dsa_slave_poll_controller(struct net_device *dev) |
| { |
| } |
| #endif |
| |
| static int dsa_slave_get_phys_port_name(struct net_device *dev, |
| char *name, size_t len) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| |
| if (snprintf(name, len, "p%d", p->dp->index) >= len) |
| return -EINVAL; |
| |
| return 0; |
| } |
| |
| static struct dsa_mall_tc_entry * |
| dsa_slave_mall_tc_entry_find(struct dsa_slave_priv *p, |
| unsigned long cookie) |
| { |
| struct dsa_mall_tc_entry *mall_tc_entry; |
| |
| list_for_each_entry(mall_tc_entry, &p->mall_tc_list, list) |
| if (mall_tc_entry->cookie == cookie) |
| return mall_tc_entry; |
| |
| return NULL; |
| } |
| |
| static int dsa_slave_add_cls_matchall(struct net_device *dev, |
| struct tc_cls_matchall_offload *cls, |
| bool ingress) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_mall_tc_entry *mall_tc_entry; |
| __be16 protocol = cls->common.protocol; |
| struct dsa_switch *ds = p->dp->ds; |
| struct net *net = dev_net(dev); |
| struct dsa_slave_priv *to_p; |
| struct net_device *to_dev; |
| const struct tc_action *a; |
| int err = -EOPNOTSUPP; |
| LIST_HEAD(actions); |
| int ifindex; |
| |
| if (!ds->ops->port_mirror_add) |
| return err; |
| |
| if (!tcf_exts_has_one_action(cls->exts)) |
| return err; |
| |
| tcf_exts_to_list(cls->exts, &actions); |
| a = list_first_entry(&actions, struct tc_action, list); |
| |
| if (is_tcf_mirred_egress_mirror(a) && protocol == htons(ETH_P_ALL)) { |
| struct dsa_mall_mirror_tc_entry *mirror; |
| |
| ifindex = tcf_mirred_ifindex(a); |
| to_dev = __dev_get_by_index(net, ifindex); |
| if (!to_dev) |
| return -EINVAL; |
| |
| if (!dsa_slave_dev_check(to_dev)) |
| return -EOPNOTSUPP; |
| |
| mall_tc_entry = kzalloc(sizeof(*mall_tc_entry), GFP_KERNEL); |
| if (!mall_tc_entry) |
| return -ENOMEM; |
| |
| mall_tc_entry->cookie = cls->cookie; |
| mall_tc_entry->type = DSA_PORT_MALL_MIRROR; |
| mirror = &mall_tc_entry->mirror; |
| |
| to_p = netdev_priv(to_dev); |
| |
| mirror->to_local_port = to_p->dp->index; |
| mirror->ingress = ingress; |
| |
| err = ds->ops->port_mirror_add(ds, p->dp->index, mirror, |
| ingress); |
| if (err) { |
| kfree(mall_tc_entry); |
| return err; |
| } |
| |
| list_add_tail(&mall_tc_entry->list, &p->mall_tc_list); |
| } |
| |
| return 0; |
| } |
| |
| static void dsa_slave_del_cls_matchall(struct net_device *dev, |
| struct tc_cls_matchall_offload *cls) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_mall_tc_entry *mall_tc_entry; |
| struct dsa_switch *ds = p->dp->ds; |
| |
| if (!ds->ops->port_mirror_del) |
| return; |
| |
| mall_tc_entry = dsa_slave_mall_tc_entry_find(p, cls->cookie); |
| if (!mall_tc_entry) |
| return; |
| |
| list_del(&mall_tc_entry->list); |
| |
| switch (mall_tc_entry->type) { |
| case DSA_PORT_MALL_MIRROR: |
| ds->ops->port_mirror_del(ds, p->dp->index, |
| &mall_tc_entry->mirror); |
| break; |
| default: |
| WARN_ON(1); |
| } |
| |
| kfree(mall_tc_entry); |
| } |
| |
| static int dsa_slave_setup_tc_cls_matchall(struct net_device *dev, |
| struct tc_cls_matchall_offload *cls) |
| { |
| bool ingress; |
| |
| if (is_classid_clsact_ingress(cls->common.classid)) |
| ingress = true; |
| else if (is_classid_clsact_egress(cls->common.classid)) |
| ingress = false; |
| else |
| return -EOPNOTSUPP; |
| |
| if (cls->common.chain_index) |
| return -EOPNOTSUPP; |
| |
| switch (cls->command) { |
| case TC_CLSMATCHALL_REPLACE: |
| return dsa_slave_add_cls_matchall(dev, cls, ingress); |
| case TC_CLSMATCHALL_DESTROY: |
| dsa_slave_del_cls_matchall(dev, cls); |
| return 0; |
| default: |
| return -EOPNOTSUPP; |
| } |
| } |
| |
| static int dsa_slave_setup_tc(struct net_device *dev, enum tc_setup_type type, |
| void *type_data) |
| { |
| switch (type) { |
| case TC_SETUP_CLSMATCHALL: |
| return dsa_slave_setup_tc_cls_matchall(dev, type_data); |
| default: |
| return -EOPNOTSUPP; |
| } |
| } |
| |
| static void dsa_slave_get_stats64(struct net_device *dev, |
| struct rtnl_link_stats64 *stats) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct pcpu_sw_netstats *s; |
| unsigned int start; |
| int i; |
| |
| netdev_stats_to_stats64(stats, &dev->stats); |
| for_each_possible_cpu(i) { |
| u64 tx_packets, tx_bytes, rx_packets, rx_bytes; |
| |
| s = per_cpu_ptr(p->stats64, i); |
| do { |
| start = u64_stats_fetch_begin_irq(&s->syncp); |
| tx_packets = s->tx_packets; |
| tx_bytes = s->tx_bytes; |
| rx_packets = s->rx_packets; |
| rx_bytes = s->rx_bytes; |
| } while (u64_stats_fetch_retry_irq(&s->syncp, start)); |
| |
| stats->tx_packets += tx_packets; |
| stats->tx_bytes += tx_bytes; |
| stats->rx_packets += rx_packets; |
| stats->rx_bytes += rx_bytes; |
| } |
| } |
| |
| void dsa_cpu_port_ethtool_init(struct ethtool_ops *ops) |
| { |
| ops->get_sset_count = dsa_cpu_port_get_sset_count; |
| ops->get_ethtool_stats = dsa_cpu_port_get_ethtool_stats; |
| ops->get_strings = dsa_cpu_port_get_strings; |
| } |
| |
| static int dsa_slave_get_rxnfc(struct net_device *dev, |
| struct ethtool_rxnfc *nfc, u32 *rule_locs) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->dp->ds; |
| |
| if (!ds->ops->get_rxnfc) |
| return -EOPNOTSUPP; |
| |
| return ds->ops->get_rxnfc(ds, p->dp->index, nfc, rule_locs); |
| } |
| |
| static int dsa_slave_set_rxnfc(struct net_device *dev, |
| struct ethtool_rxnfc *nfc) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->dp->ds; |
| |
| if (!ds->ops->set_rxnfc) |
| return -EOPNOTSUPP; |
| |
| return ds->ops->set_rxnfc(ds, p->dp->index, nfc); |
| } |
| |
| static const struct ethtool_ops dsa_slave_ethtool_ops = { |
| .get_drvinfo = dsa_slave_get_drvinfo, |
| .get_regs_len = dsa_slave_get_regs_len, |
| .get_regs = dsa_slave_get_regs, |
| .nway_reset = dsa_slave_nway_reset, |
| .get_link = dsa_slave_get_link, |
| .get_eeprom_len = dsa_slave_get_eeprom_len, |
| .get_eeprom = dsa_slave_get_eeprom, |
| .set_eeprom = dsa_slave_set_eeprom, |
| .get_strings = dsa_slave_get_strings, |
| .get_ethtool_stats = dsa_slave_get_ethtool_stats, |
| .get_sset_count = dsa_slave_get_sset_count, |
| .set_wol = dsa_slave_set_wol, |
| .get_wol = dsa_slave_get_wol, |
| .set_eee = dsa_slave_set_eee, |
| .get_eee = dsa_slave_get_eee, |
| .get_link_ksettings = dsa_slave_get_link_ksettings, |
| .set_link_ksettings = dsa_slave_set_link_ksettings, |
| .get_rxnfc = dsa_slave_get_rxnfc, |
| .set_rxnfc = dsa_slave_set_rxnfc, |
| }; |
| |
| static const struct net_device_ops dsa_slave_netdev_ops = { |
| .ndo_open = dsa_slave_open, |
| .ndo_stop = dsa_slave_close, |
| .ndo_start_xmit = dsa_slave_xmit, |
| .ndo_change_rx_flags = dsa_slave_change_rx_flags, |
| .ndo_set_rx_mode = dsa_slave_set_rx_mode, |
| .ndo_set_mac_address = dsa_slave_set_mac_address, |
| .ndo_fdb_add = dsa_legacy_fdb_add, |
| .ndo_fdb_del = dsa_legacy_fdb_del, |
| .ndo_fdb_dump = dsa_slave_fdb_dump, |
| .ndo_do_ioctl = dsa_slave_ioctl, |
| .ndo_get_iflink = dsa_slave_get_iflink, |
| #ifdef CONFIG_NET_POLL_CONTROLLER |
| .ndo_netpoll_setup = dsa_slave_netpoll_setup, |
| .ndo_netpoll_cleanup = dsa_slave_netpoll_cleanup, |
| .ndo_poll_controller = dsa_slave_poll_controller, |
| #endif |
| .ndo_get_phys_port_name = dsa_slave_get_phys_port_name, |
| .ndo_setup_tc = dsa_slave_setup_tc, |
| .ndo_get_stats64 = dsa_slave_get_stats64, |
| }; |
| |
| static const struct switchdev_ops dsa_slave_switchdev_ops = { |
| .switchdev_port_attr_get = dsa_slave_port_attr_get, |
| .switchdev_port_attr_set = dsa_slave_port_attr_set, |
| .switchdev_port_obj_add = dsa_slave_port_obj_add, |
| .switchdev_port_obj_del = dsa_slave_port_obj_del, |
| }; |
| |
| static struct device_type dsa_type = { |
| .name = "dsa", |
| }; |
| |
| static void dsa_slave_adjust_link(struct net_device *dev) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->dp->ds; |
| unsigned int status_changed = 0; |
| |
| if (p->old_link != p->phy->link) { |
| status_changed = 1; |
| p->old_link = p->phy->link; |
| } |
| |
| if (p->old_duplex != p->phy->duplex) { |
| status_changed = 1; |
| p->old_duplex = p->phy->duplex; |
| } |
| |
| if (p->old_pause != p->phy->pause) { |
| status_changed = 1; |
| p->old_pause = p->phy->pause; |
| } |
| |
| if (ds->ops->adjust_link && status_changed) |
| ds->ops->adjust_link(ds, p->dp->index, p->phy); |
| |
| if (status_changed) |
| phy_print_status(p->phy); |
| } |
| |
| static int dsa_slave_fixed_link_update(struct net_device *dev, |
| struct fixed_phy_status *status) |
| { |
| struct dsa_slave_priv *p; |
| struct dsa_switch *ds; |
| |
| if (dev) { |
| p = netdev_priv(dev); |
| ds = p->dp->ds; |
| if (ds->ops->fixed_link_update) |
| ds->ops->fixed_link_update(ds, p->dp->index, status); |
| } |
| |
| return 0; |
| } |
| |
| /* slave device setup *******************************************************/ |
| static int dsa_slave_phy_connect(struct dsa_slave_priv *p, |
| struct net_device *slave_dev, |
| int addr) |
| { |
| struct dsa_switch *ds = p->dp->ds; |
| |
| p->phy = mdiobus_get_phy(ds->slave_mii_bus, addr); |
| if (!p->phy) { |
| netdev_err(slave_dev, "no phy at %d\n", addr); |
| return -ENODEV; |
| } |
| |
| /* Use already configured phy mode */ |
| if (p->phy_interface == PHY_INTERFACE_MODE_NA) |
| p->phy_interface = p->phy->interface; |
| return phy_connect_direct(slave_dev, p->phy, dsa_slave_adjust_link, |
| p->phy_interface); |
| } |
| |
| static int dsa_slave_phy_setup(struct dsa_slave_priv *p, |
| struct net_device *slave_dev) |
| { |
| struct dsa_switch *ds = p->dp->ds; |
| struct device_node *phy_dn, *port_dn; |
| bool phy_is_fixed = false; |
| u32 phy_flags = 0; |
| int mode, ret; |
| |
| port_dn = p->dp->dn; |
| mode = of_get_phy_mode(port_dn); |
| if (mode < 0) |
| mode = PHY_INTERFACE_MODE_NA; |
| p->phy_interface = mode; |
| |
| phy_dn = of_parse_phandle(port_dn, "phy-handle", 0); |
| if (!phy_dn && of_phy_is_fixed_link(port_dn)) { |
| /* In the case of a fixed PHY, the DT node associated |
| * to the fixed PHY is the Port DT node |
| */ |
| ret = of_phy_register_fixed_link(port_dn); |
| if (ret) { |
| netdev_err(slave_dev, "failed to register fixed PHY: %d\n", ret); |
| return ret; |
| } |
| phy_is_fixed = true; |
| phy_dn = of_node_get(port_dn); |
| } |
| |
| if (ds->ops->get_phy_flags) |
| phy_flags = ds->ops->get_phy_flags(ds, p->dp->index); |
| |
| if (phy_dn) { |
| int phy_id = of_mdio_parse_addr(&slave_dev->dev, phy_dn); |
| |
| /* If this PHY address is part of phys_mii_mask, which means |
| * that we need to divert reads and writes to/from it, then we |
| * want to bind this device using the slave MII bus created by |
| * DSA to make that happen. |
| */ |
| if (!phy_is_fixed && phy_id >= 0 && |
| (ds->phys_mii_mask & (1 << phy_id))) { |
| ret = dsa_slave_phy_connect(p, slave_dev, phy_id); |
| if (ret) { |
| netdev_err(slave_dev, "failed to connect to phy%d: %d\n", phy_id, ret); |
| of_node_put(phy_dn); |
| return ret; |
| } |
| } else { |
| p->phy = of_phy_connect(slave_dev, phy_dn, |
| dsa_slave_adjust_link, |
| phy_flags, |
| p->phy_interface); |
| } |
| |
| of_node_put(phy_dn); |
| } |
| |
| if (p->phy && phy_is_fixed) |
| fixed_phy_set_link_update(p->phy, dsa_slave_fixed_link_update); |
| |
| /* We could not connect to a designated PHY, so use the switch internal |
| * MDIO bus instead |
| */ |
| if (!p->phy) { |
| ret = dsa_slave_phy_connect(p, slave_dev, p->dp->index); |
| if (ret) { |
| netdev_err(slave_dev, "failed to connect to port %d: %d\n", |
| p->dp->index, ret); |
| if (phy_is_fixed) |
| of_phy_deregister_fixed_link(port_dn); |
| return ret; |
| } |
| } |
| |
| phy_attached_info(p->phy); |
| |
| return 0; |
| } |
| |
| static struct lock_class_key dsa_slave_netdev_xmit_lock_key; |
| static void dsa_slave_set_lockdep_class_one(struct net_device *dev, |
| struct netdev_queue *txq, |
| void *_unused) |
| { |
| lockdep_set_class(&txq->_xmit_lock, |
| &dsa_slave_netdev_xmit_lock_key); |
| } |
| |
| int dsa_slave_suspend(struct net_device *slave_dev) |
| { |
| struct dsa_slave_priv *p = netdev_priv(slave_dev); |
| |
| if (!netif_running(slave_dev)) |
| return 0; |
| |
| netif_device_detach(slave_dev); |
| |
| if (p->phy) { |
| phy_stop(p->phy); |
| p->old_pause = -1; |
| p->old_link = -1; |
| p->old_duplex = -1; |
| phy_suspend(p->phy); |
| } |
| |
| return 0; |
| } |
| |
| int dsa_slave_resume(struct net_device *slave_dev) |
| { |
| struct dsa_slave_priv *p = netdev_priv(slave_dev); |
| |
| if (!netif_running(slave_dev)) |
| return 0; |
| |
| netif_device_attach(slave_dev); |
| |
| if (p->phy) { |
| phy_resume(p->phy); |
| phy_start(p->phy); |
| } |
| |
| return 0; |
| } |
| |
| int dsa_slave_create(struct dsa_port *port, const char *name) |
| { |
| struct dsa_switch *ds = port->ds; |
| struct dsa_switch_tree *dst = ds->dst; |
| struct net_device *master; |
| struct net_device *slave_dev; |
| struct dsa_slave_priv *p; |
| struct dsa_port *cpu_dp; |
| int ret; |
| |
| cpu_dp = ds->dst->cpu_dp; |
| master = cpu_dp->netdev; |
| |
| if (!ds->num_tx_queues) |
| ds->num_tx_queues = 1; |
| |
| slave_dev = alloc_netdev_mqs(sizeof(struct dsa_slave_priv), name, |
| NET_NAME_UNKNOWN, ether_setup, |
| ds->num_tx_queues, 1); |
| if (slave_dev == NULL) |
| return -ENOMEM; |
| |
| slave_dev->features = master->vlan_features | NETIF_F_HW_TC; |
| slave_dev->hw_features |= NETIF_F_HW_TC; |
| slave_dev->ethtool_ops = &dsa_slave_ethtool_ops; |
| eth_hw_addr_inherit(slave_dev, master); |
| slave_dev->priv_flags |= IFF_NO_QUEUE; |
| slave_dev->netdev_ops = &dsa_slave_netdev_ops; |
| slave_dev->switchdev_ops = &dsa_slave_switchdev_ops; |
| slave_dev->min_mtu = 0; |
| slave_dev->max_mtu = ETH_MAX_MTU; |
| SET_NETDEV_DEVTYPE(slave_dev, &dsa_type); |
| |
| netdev_for_each_tx_queue(slave_dev, dsa_slave_set_lockdep_class_one, |
| NULL); |
| |
| SET_NETDEV_DEV(slave_dev, port->ds->dev); |
| slave_dev->dev.of_node = port->dn; |
| slave_dev->vlan_features = master->vlan_features; |
| |
| p = netdev_priv(slave_dev); |
| p->stats64 = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats); |
| if (!p->stats64) { |
| free_netdev(slave_dev); |
| return -ENOMEM; |
| } |
| p->dp = port; |
| INIT_LIST_HEAD(&p->mall_tc_list); |
| p->xmit = dst->tag_ops->xmit; |
| |
| p->old_pause = -1; |
| p->old_link = -1; |
| p->old_duplex = -1; |
| |
| port->netdev = slave_dev; |
| |
| netif_carrier_off(slave_dev); |
| |
| ret = dsa_slave_phy_setup(p, slave_dev); |
| if (ret) { |
| netdev_err(master, "error %d setting up slave phy\n", ret); |
| goto out_free; |
| } |
| |
| ret = register_netdev(slave_dev); |
| if (ret) { |
| netdev_err(master, "error %d registering interface %s\n", |
| ret, slave_dev->name); |
| goto out_phy; |
| } |
| |
| return 0; |
| |
| out_phy: |
| phy_disconnect(p->phy); |
| if (of_phy_is_fixed_link(p->dp->dn)) |
| of_phy_deregister_fixed_link(p->dp->dn); |
| out_free: |
| free_percpu(p->stats64); |
| free_netdev(slave_dev); |
| port->netdev = NULL; |
| return ret; |
| } |
| |
| void dsa_slave_destroy(struct net_device *slave_dev) |
| { |
| struct dsa_slave_priv *p = netdev_priv(slave_dev); |
| struct device_node *port_dn; |
| |
| port_dn = p->dp->dn; |
| |
| netif_carrier_off(slave_dev); |
| if (p->phy) { |
| phy_disconnect(p->phy); |
| |
| if (of_phy_is_fixed_link(port_dn)) |
| of_phy_deregister_fixed_link(port_dn); |
| } |
| unregister_netdev(slave_dev); |
| free_percpu(p->stats64); |
| free_netdev(slave_dev); |
| } |
| |
| static bool dsa_slave_dev_check(struct net_device *dev) |
| { |
| return dev->netdev_ops == &dsa_slave_netdev_ops; |
| } |
| |
| static int dsa_slave_changeupper(struct net_device *dev, |
| struct netdev_notifier_changeupper_info *info) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_port *dp = p->dp; |
| int err = NOTIFY_DONE; |
| |
| if (netif_is_bridge_master(info->upper_dev)) { |
| if (info->linking) { |
| err = dsa_port_bridge_join(dp, info->upper_dev); |
| err = notifier_from_errno(err); |
| } else { |
| dsa_port_bridge_leave(dp, info->upper_dev); |
| err = NOTIFY_OK; |
| } |
| } |
| |
| return err; |
| } |
| |
| static int dsa_slave_netdevice_event(struct notifier_block *nb, |
| unsigned long event, void *ptr) |
| { |
| struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
| |
| if (dev->netdev_ops != &dsa_slave_netdev_ops) |
| return NOTIFY_DONE; |
| |
| if (event == NETDEV_CHANGEUPPER) |
| return dsa_slave_changeupper(dev, ptr); |
| |
| return NOTIFY_DONE; |
| } |
| |
| struct dsa_switchdev_event_work { |
| struct work_struct work; |
| struct switchdev_notifier_fdb_info fdb_info; |
| struct net_device *dev; |
| unsigned long event; |
| }; |
| |
| static void dsa_slave_switchdev_event_work(struct work_struct *work) |
| { |
| struct dsa_switchdev_event_work *switchdev_work = |
| container_of(work, struct dsa_switchdev_event_work, work); |
| struct net_device *dev = switchdev_work->dev; |
| struct switchdev_notifier_fdb_info *fdb_info; |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| int err; |
| |
| rtnl_lock(); |
| switch (switchdev_work->event) { |
| case SWITCHDEV_FDB_ADD_TO_DEVICE: |
| fdb_info = &switchdev_work->fdb_info; |
| err = dsa_port_fdb_add(p->dp, fdb_info->addr, fdb_info->vid); |
| if (err) { |
| netdev_dbg(dev, "fdb add failed err=%d\n", err); |
| break; |
| } |
| call_switchdev_notifiers(SWITCHDEV_FDB_OFFLOADED, dev, |
| &fdb_info->info); |
| break; |
| |
| case SWITCHDEV_FDB_DEL_TO_DEVICE: |
| fdb_info = &switchdev_work->fdb_info; |
| err = dsa_port_fdb_del(p->dp, fdb_info->addr, fdb_info->vid); |
| if (err) { |
| netdev_dbg(dev, "fdb del failed err=%d\n", err); |
| dev_close(dev); |
| } |
| break; |
| } |
| rtnl_unlock(); |
| |
| kfree(switchdev_work->fdb_info.addr); |
| kfree(switchdev_work); |
| dev_put(dev); |
| } |
| |
| static int |
| dsa_slave_switchdev_fdb_work_init(struct dsa_switchdev_event_work * |
| switchdev_work, |
| const struct switchdev_notifier_fdb_info * |
| fdb_info) |
| { |
| memcpy(&switchdev_work->fdb_info, fdb_info, |
| sizeof(switchdev_work->fdb_info)); |
| switchdev_work->fdb_info.addr = kzalloc(ETH_ALEN, GFP_ATOMIC); |
| if (!switchdev_work->fdb_info.addr) |
| return -ENOMEM; |
| ether_addr_copy((u8 *)switchdev_work->fdb_info.addr, |
| fdb_info->addr); |
| return 0; |
| } |
| |
| /* Called under rcu_read_lock() */ |
| static int dsa_slave_switchdev_event(struct notifier_block *unused, |
| unsigned long event, void *ptr) |
| { |
| struct net_device *dev = switchdev_notifier_info_to_dev(ptr); |
| struct dsa_switchdev_event_work *switchdev_work; |
| |
| if (!dsa_slave_dev_check(dev)) |
| return NOTIFY_DONE; |
| |
| switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC); |
| if (!switchdev_work) |
| return NOTIFY_BAD; |
| |
| INIT_WORK(&switchdev_work->work, |
| dsa_slave_switchdev_event_work); |
| switchdev_work->dev = dev; |
| switchdev_work->event = event; |
| |
| switch (event) { |
| case SWITCHDEV_FDB_ADD_TO_DEVICE: /* fall through */ |
| case SWITCHDEV_FDB_DEL_TO_DEVICE: |
| if (dsa_slave_switchdev_fdb_work_init(switchdev_work, |
| ptr)) |
| goto err_fdb_work_init; |
| dev_hold(dev); |
| break; |
| default: |
| kfree(switchdev_work); |
| return NOTIFY_DONE; |
| } |
| |
| dsa_schedule_work(&switchdev_work->work); |
| return NOTIFY_OK; |
| |
| err_fdb_work_init: |
| kfree(switchdev_work); |
| return NOTIFY_BAD; |
| } |
| |
| static struct notifier_block dsa_slave_nb __read_mostly = { |
| .notifier_call = dsa_slave_netdevice_event, |
| }; |
| |
| static struct notifier_block dsa_slave_switchdev_notifier = { |
| .notifier_call = dsa_slave_switchdev_event, |
| }; |
| |
| int dsa_slave_register_notifier(void) |
| { |
| int err; |
| |
| err = register_netdevice_notifier(&dsa_slave_nb); |
| if (err) |
| return err; |
| |
| err = register_switchdev_notifier(&dsa_slave_switchdev_notifier); |
| if (err) |
| goto err_switchdev_nb; |
| |
| return 0; |
| |
| err_switchdev_nb: |
| unregister_netdevice_notifier(&dsa_slave_nb); |
| return err; |
| } |
| |
| void dsa_slave_unregister_notifier(void) |
| { |
| int err; |
| |
| err = unregister_switchdev_notifier(&dsa_slave_switchdev_notifier); |
| if (err) |
| pr_err("DSA: failed to unregister switchdev notifier (%d)\n", err); |
| |
| err = unregister_netdevice_notifier(&dsa_slave_nb); |
| if (err) |
| pr_err("DSA: failed to unregister slave notifier (%d)\n", err); |
| } |