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// SPDX-License-Identifier: (GPL-2.0 OR MPL-1.1)
/* src/prism2/driver/prism2sta.c
*
* Implements the station functionality for prism2
*
* Copyright (C) 1999 AbsoluteValue Systems, Inc. All Rights Reserved.
* --------------------------------------------------------------------
*
* linux-wlan
*
* The contents of this file are subject to the Mozilla Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* Alternatively, the contents of this file may be used under the
* terms of the GNU Public License version 2 (the "GPL"), in which
* case the provisions of the GPL are applicable instead of the
* above. If you wish to allow the use of your version of this file
* only under the terms of the GPL and not to allow others to use
* your version of this file under the MPL, indicate your decision
* by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL. If you do not delete
* the provisions above, a recipient may use your version of this
* file under either the MPL or the GPL.
*
* --------------------------------------------------------------------
*
* Inquiries regarding the linux-wlan Open Source project can be
* made directly to:
*
* AbsoluteValue Systems Inc.
* info@linux-wlan.com
* http://www.linux-wlan.com
*
* --------------------------------------------------------------------
*
* Portions of the development of this software were funded by
* Intersil Corporation as part of PRISM(R) chipset product development.
*
* --------------------------------------------------------------------
*
* This file implements the module and linux pcmcia routines for the
* prism2 driver.
*
* --------------------------------------------------------------------
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/wireless.h>
#include <linux/netdevice.h>
#include <linux/workqueue.h>
#include <linux/byteorder/generic.h>
#include <linux/etherdevice.h>
#include <linux/io.h>
#include <linux/delay.h>
#include <asm/byteorder.h>
#include <linux/if_arp.h>
#include <linux/if_ether.h>
#include <linux/bitops.h>
#include "p80211types.h"
#include "p80211hdr.h"
#include "p80211mgmt.h"
#include "p80211conv.h"
#include "p80211msg.h"
#include "p80211netdev.h"
#include "p80211req.h"
#include "p80211metadef.h"
#include "p80211metastruct.h"
#include "hfa384x.h"
#include "prism2mgmt.h"
static char *dev_info = "prism2_usb";
static struct wlandevice *create_wlan(void);
int prism2_reset_holdtime = 30; /* Reset hold time in ms */
int prism2_reset_settletime = 100; /* Reset settle time in ms */
static int prism2_doreset; /* Do a reset at init? */
module_param(prism2_doreset, int, 0644);
MODULE_PARM_DESC(prism2_doreset, "Issue a reset on initialization");
module_param(prism2_reset_holdtime, int, 0644);
MODULE_PARM_DESC(prism2_reset_holdtime, "reset hold time in ms");
module_param(prism2_reset_settletime, int, 0644);
MODULE_PARM_DESC(prism2_reset_settletime, "reset settle time in ms");
MODULE_LICENSE("Dual MPL/GPL");
static int prism2sta_open(struct wlandevice *wlandev);
static int prism2sta_close(struct wlandevice *wlandev);
static void prism2sta_reset(struct wlandevice *wlandev);
static int prism2sta_txframe(struct wlandevice *wlandev, struct sk_buff *skb,
union p80211_hdr *p80211_hdr,
struct p80211_metawep *p80211_wep);
static int prism2sta_mlmerequest(struct wlandevice *wlandev,
struct p80211msg *msg);
static int prism2sta_getcardinfo(struct wlandevice *wlandev);
static int prism2sta_globalsetup(struct wlandevice *wlandev);
static int prism2sta_setmulticast(struct wlandevice *wlandev,
struct net_device *dev);
static void prism2sta_inf_handover(struct wlandevice *wlandev,
struct hfa384x_inf_frame *inf);
static void prism2sta_inf_tallies(struct wlandevice *wlandev,
struct hfa384x_inf_frame *inf);
static void prism2sta_inf_hostscanresults(struct wlandevice *wlandev,
struct hfa384x_inf_frame *inf);
static void prism2sta_inf_scanresults(struct wlandevice *wlandev,
struct hfa384x_inf_frame *inf);
static void prism2sta_inf_chinforesults(struct wlandevice *wlandev,
struct hfa384x_inf_frame *inf);
static void prism2sta_inf_linkstatus(struct wlandevice *wlandev,
struct hfa384x_inf_frame *inf);
static void prism2sta_inf_assocstatus(struct wlandevice *wlandev,
struct hfa384x_inf_frame *inf);
static void prism2sta_inf_authreq(struct wlandevice *wlandev,
struct hfa384x_inf_frame *inf);
static void prism2sta_inf_authreq_defer(struct wlandevice *wlandev,
struct hfa384x_inf_frame *inf);
static void prism2sta_inf_psusercnt(struct wlandevice *wlandev,
struct hfa384x_inf_frame *inf);
/*
* prism2sta_open
*
* WLAN device open method. Called from p80211netdev when kernel
* device open (start) method is called in response to the
* SIOCSIIFFLAGS ioctl changing the flags bit IFF_UP
* from clear to set.
*
* Arguments:
* wlandev wlan device structure
*
* Returns:
* 0 success
* >0 f/w reported error
* <0 driver reported error
*
* Side effects:
*
* Call context:
* process thread
*/
static int prism2sta_open(struct wlandevice *wlandev)
{
/* We don't currently have to do anything else.
* The setup of the MAC should be subsequently completed via
* the mlme commands.
* Higher layers know we're ready from dev->start==1 and
* dev->tbusy==0. Our rx path knows to pass up received/
* frames because of dev->flags&IFF_UP is true.
*/
return 0;
}
/*
* prism2sta_close
*
* WLAN device close method. Called from p80211netdev when kernel
* device close method is called in response to the
* SIOCSIIFFLAGS ioctl changing the flags bit IFF_UP
* from set to clear.
*
* Arguments:
* wlandev wlan device structure
*
* Returns:
* 0 success
* >0 f/w reported error
* <0 driver reported error
*
* Side effects:
*
* Call context:
* process thread
*/
static int prism2sta_close(struct wlandevice *wlandev)
{
/* We don't currently have to do anything else.
* Higher layers know we're not ready from dev->start==0 and
* dev->tbusy==1. Our rx path knows to not pass up received
* frames because of dev->flags&IFF_UP is false.
*/
return 0;
}
/*
* prism2sta_reset
*
* Currently not implemented.
*
* Arguments:
* wlandev wlan device structure
* none
*
* Returns:
* nothing
*
* Side effects:
*
* Call context:
* process thread
*/
static void prism2sta_reset(struct wlandevice *wlandev)
{
}
/*
* prism2sta_txframe
*
* Takes a frame from p80211 and queues it for transmission.
*
* Arguments:
* wlandev wlan device structure
* pb packet buffer struct. Contains an 802.11
* data frame.
* p80211_hdr points to the 802.11 header for the packet.
* Returns:
* 0 Success and more buffs available
* 1 Success but no more buffs
* 2 Allocation failure
* 4 Buffer full or queue busy
*
* Side effects:
*
* Call context:
* process thread
*/
static int prism2sta_txframe(struct wlandevice *wlandev, struct sk_buff *skb,
union p80211_hdr *p80211_hdr,
struct p80211_metawep *p80211_wep)
{
struct hfa384x *hw = wlandev->priv;
/* If necessary, set the 802.11 WEP bit */
if ((wlandev->hostwep & (HOSTWEP_PRIVACYINVOKED | HOSTWEP_ENCRYPT)) ==
HOSTWEP_PRIVACYINVOKED) {
p80211_hdr->a3.fc |= cpu_to_le16(WLAN_SET_FC_ISWEP(1));
}
return hfa384x_drvr_txframe(hw, skb, p80211_hdr, p80211_wep);
}
/*
* prism2sta_mlmerequest
*
* wlan command message handler. All we do here is pass the message
* over to the prism2sta_mgmt_handler.
*
* Arguments:
* wlandev wlan device structure
* msg wlan command message
* Returns:
* 0 success
* <0 successful acceptance of message, but we're
* waiting for an async process to finish before
* we're done with the msg. When the asynch
* process is done, we'll call the p80211
* function p80211req_confirm() .
* >0 An error occurred while we were handling
* the message.
*
* Side effects:
*
* Call context:
* process thread
*/
static int prism2sta_mlmerequest(struct wlandevice *wlandev,
struct p80211msg *msg)
{
struct hfa384x *hw = wlandev->priv;
int result = 0;
switch (msg->msgcode) {
case DIDmsg_dot11req_mibget:
pr_debug("Received mibget request\n");
result = prism2mgmt_mibset_mibget(wlandev, msg);
break;
case DIDmsg_dot11req_mibset:
pr_debug("Received mibset request\n");
result = prism2mgmt_mibset_mibget(wlandev, msg);
break;
case DIDmsg_dot11req_scan:
pr_debug("Received scan request\n");
result = prism2mgmt_scan(wlandev, msg);
break;
case DIDmsg_dot11req_scan_results:
pr_debug("Received scan_results request\n");
result = prism2mgmt_scan_results(wlandev, msg);
break;
case DIDmsg_dot11req_start:
pr_debug("Received mlme start request\n");
result = prism2mgmt_start(wlandev, msg);
break;
/*
* Prism2 specific messages
*/
case DIDmsg_p2req_readpda:
pr_debug("Received mlme readpda request\n");
result = prism2mgmt_readpda(wlandev, msg);
break;
case DIDmsg_p2req_ramdl_state:
pr_debug("Received mlme ramdl_state request\n");
result = prism2mgmt_ramdl_state(wlandev, msg);
break;
case DIDmsg_p2req_ramdl_write:
pr_debug("Received mlme ramdl_write request\n");
result = prism2mgmt_ramdl_write(wlandev, msg);
break;
case DIDmsg_p2req_flashdl_state:
pr_debug("Received mlme flashdl_state request\n");
result = prism2mgmt_flashdl_state(wlandev, msg);
break;
case DIDmsg_p2req_flashdl_write:
pr_debug("Received mlme flashdl_write request\n");
result = prism2mgmt_flashdl_write(wlandev, msg);
break;
/*
* Linux specific messages
*/
case DIDmsg_lnxreq_hostwep:
break; /* ignore me. */
case DIDmsg_lnxreq_ifstate:
{
struct p80211msg_lnxreq_ifstate *ifstatemsg;
pr_debug("Received mlme ifstate request\n");
ifstatemsg = (struct p80211msg_lnxreq_ifstate *)msg;
result =
prism2sta_ifstate(wlandev,
ifstatemsg->ifstate.data);
ifstatemsg->resultcode.status =
P80211ENUM_msgitem_status_data_ok;
ifstatemsg->resultcode.data = result;
result = 0;
}
break;
case DIDmsg_lnxreq_wlansniff:
pr_debug("Received mlme wlansniff request\n");
result = prism2mgmt_wlansniff(wlandev, msg);
break;
case DIDmsg_lnxreq_autojoin:
pr_debug("Received mlme autojoin request\n");
result = prism2mgmt_autojoin(wlandev, msg);
break;
case DIDmsg_lnxreq_commsquality:{
struct p80211msg_lnxreq_commsquality *qualmsg;
pr_debug("Received commsquality request\n");
qualmsg = (struct p80211msg_lnxreq_commsquality *)msg;
qualmsg->link.status =
P80211ENUM_msgitem_status_data_ok;
qualmsg->level.status =
P80211ENUM_msgitem_status_data_ok;
qualmsg->noise.status =
P80211ENUM_msgitem_status_data_ok;
qualmsg->link.data = le16_to_cpu(hw->qual.cq_curr_bss);
qualmsg->level.data =
le16_to_cpu(hw->qual.asl_curr_bss);
qualmsg->noise.data = le16_to_cpu(hw->qual.anl_curr_fc);
qualmsg->txrate.data = hw->txrate;
break;
}
default:
netdev_warn(wlandev->netdev,
"Unknown mgmt request message 0x%08x",
msg->msgcode);
break;
}
return result;
}
/*
* prism2sta_ifstate
*
* Interface state. This is the primary WLAN interface enable/disable
* handler. Following the driver/load/deviceprobe sequence, this
* function must be called with a state of "enable" before any other
* commands will be accepted.
*
* Arguments:
* wlandev wlan device structure
* msgp ptr to msg buffer
*
* Returns:
* A p80211 message resultcode value.
*
* Side effects:
*
* Call context:
* process thread (usually)
* interrupt
*/
u32 prism2sta_ifstate(struct wlandevice *wlandev, u32 ifstate)
{
struct hfa384x *hw = wlandev->priv;
u32 result;
result = P80211ENUM_resultcode_implementation_failure;
pr_debug("Current MSD state(%d), requesting(%d)\n",
wlandev->msdstate, ifstate);
switch (ifstate) {
case P80211ENUM_ifstate_fwload:
switch (wlandev->msdstate) {
case WLAN_MSD_HWPRESENT:
wlandev->msdstate = WLAN_MSD_FWLOAD_PENDING;
/*
* Initialize the device+driver sufficiently
* for firmware loading.
*/
result = hfa384x_drvr_start(hw);
if (result) {
netdev_err(wlandev->netdev,
"hfa384x_drvr_start() failed,result=%d\n",
(int)result);
result =
P80211ENUM_resultcode_implementation_failure;
wlandev->msdstate = WLAN_MSD_HWPRESENT;
break;
}
wlandev->msdstate = WLAN_MSD_FWLOAD;
result = P80211ENUM_resultcode_success;
break;
case WLAN_MSD_FWLOAD:
hfa384x_cmd_initialize(hw);
result = P80211ENUM_resultcode_success;
break;
case WLAN_MSD_RUNNING:
netdev_warn(wlandev->netdev,
"Cannot enter fwload state from enable state, you must disable first.\n");
result = P80211ENUM_resultcode_invalid_parameters;
break;
case WLAN_MSD_HWFAIL:
default:
/* probe() had a problem or the msdstate contains
* an unrecognized value, there's nothing we can do.
*/
result = P80211ENUM_resultcode_implementation_failure;
break;
}
break;
case P80211ENUM_ifstate_enable:
switch (wlandev->msdstate) {
case WLAN_MSD_HWPRESENT:
case WLAN_MSD_FWLOAD:
wlandev->msdstate = WLAN_MSD_RUNNING_PENDING;
/* Initialize the device+driver for full
* operation. Note that this might me an FWLOAD to
* to RUNNING transition so we must not do a chip
* or board level reset. Note that on failure,
* the MSD state is set to HWPRESENT because we
* can't make any assumptions about the state
* of the hardware or a previous firmware load.
*/
result = hfa384x_drvr_start(hw);
if (result) {
netdev_err(wlandev->netdev,
"hfa384x_drvr_start() failed,result=%d\n",
(int)result);
result =
P80211ENUM_resultcode_implementation_failure;
wlandev->msdstate = WLAN_MSD_HWPRESENT;
break;
}
result = prism2sta_getcardinfo(wlandev);
if (result) {
netdev_err(wlandev->netdev,
"prism2sta_getcardinfo() failed,result=%d\n",
(int)result);
result =
P80211ENUM_resultcode_implementation_failure;
hfa384x_drvr_stop(hw);
wlandev->msdstate = WLAN_MSD_HWPRESENT;
break;
}
result = prism2sta_globalsetup(wlandev);
if (result) {
netdev_err(wlandev->netdev,
"prism2sta_globalsetup() failed,result=%d\n",
(int)result);
result =
P80211ENUM_resultcode_implementation_failure;
hfa384x_drvr_stop(hw);
wlandev->msdstate = WLAN_MSD_HWPRESENT;
break;
}
wlandev->msdstate = WLAN_MSD_RUNNING;
hw->join_ap = 0;
hw->join_retries = 60;
result = P80211ENUM_resultcode_success;
break;
case WLAN_MSD_RUNNING:
/* Do nothing, we're already in this state. */
result = P80211ENUM_resultcode_success;
break;
case WLAN_MSD_HWFAIL:
default:
/* probe() had a problem or the msdstate contains
* an unrecognized value, there's nothing we can do.
*/
result = P80211ENUM_resultcode_implementation_failure;
break;
}
break;
case P80211ENUM_ifstate_disable:
switch (wlandev->msdstate) {
case WLAN_MSD_HWPRESENT:
/* Do nothing, we're already in this state. */
result = P80211ENUM_resultcode_success;
break;
case WLAN_MSD_FWLOAD:
case WLAN_MSD_RUNNING:
wlandev->msdstate = WLAN_MSD_HWPRESENT_PENDING;
/*
* TODO: Shut down the MAC completely. Here a chip
* or board level reset is probably called for.
* After a "disable" _all_ results are lost, even
* those from a fwload.
*/
if (!wlandev->hwremoved)
netif_carrier_off(wlandev->netdev);
hfa384x_drvr_stop(hw);
wlandev->macmode = WLAN_MACMODE_NONE;
wlandev->msdstate = WLAN_MSD_HWPRESENT;
result = P80211ENUM_resultcode_success;
break;
case WLAN_MSD_HWFAIL:
default:
/* probe() had a problem or the msdstate contains
* an unrecognized value, there's nothing we can do.
*/
result = P80211ENUM_resultcode_implementation_failure;
break;
}
break;
default:
result = P80211ENUM_resultcode_invalid_parameters;
break;
}
return result;
}
/*
* prism2sta_getcardinfo
*
* Collect the NICID, firmware version and any other identifiers
* we'd like to have in host-side data structures.
*
* Arguments:
* wlandev wlan device structure
*
* Returns:
* 0 success
* >0 f/w reported error
* <0 driver reported error
*
* Side effects:
*
* Call context:
* Either.
*/
static int prism2sta_getcardinfo(struct wlandevice *wlandev)
{
int result = 0;
struct hfa384x *hw = wlandev->priv;
u16 temp;
u8 snum[HFA384x_RID_NICSERIALNUMBER_LEN];
/* Collect version and compatibility info */
/* Some are critical, some are not */
/* NIC identity */
result = hfa384x_drvr_getconfig(hw, HFA384x_RID_NICIDENTITY,
&hw->ident_nic,
sizeof(struct hfa384x_compident));
if (result) {
netdev_err(wlandev->netdev, "Failed to retrieve NICIDENTITY\n");
goto failed;
}
/* get all the nic id fields in host byte order */
le16_to_cpus(&hw->ident_nic.id);
le16_to_cpus(&hw->ident_nic.variant);
le16_to_cpus(&hw->ident_nic.major);
le16_to_cpus(&hw->ident_nic.minor);
netdev_info(wlandev->netdev, "ident: nic h/w: id=0x%02x %d.%d.%d\n",
hw->ident_nic.id, hw->ident_nic.major,
hw->ident_nic.minor, hw->ident_nic.variant);
/* Primary f/w identity */
result = hfa384x_drvr_getconfig(hw, HFA384x_RID_PRIIDENTITY,
&hw->ident_pri_fw,
sizeof(struct hfa384x_compident));
if (result) {
netdev_err(wlandev->netdev, "Failed to retrieve PRIIDENTITY\n");
goto failed;
}
/* get all the private fw id fields in host byte order */
le16_to_cpus(&hw->ident_pri_fw.id);
le16_to_cpus(&hw->ident_pri_fw.variant);
le16_to_cpus(&hw->ident_pri_fw.major);
le16_to_cpus(&hw->ident_pri_fw.minor);
netdev_info(wlandev->netdev, "ident: pri f/w: id=0x%02x %d.%d.%d\n",
hw->ident_pri_fw.id, hw->ident_pri_fw.major,
hw->ident_pri_fw.minor, hw->ident_pri_fw.variant);
/* Station (Secondary?) f/w identity */
result = hfa384x_drvr_getconfig(hw, HFA384x_RID_STAIDENTITY,
&hw->ident_sta_fw,
sizeof(struct hfa384x_compident));
if (result) {
netdev_err(wlandev->netdev, "Failed to retrieve STAIDENTITY\n");
goto failed;
}
if (hw->ident_nic.id < 0x8000) {
netdev_err(wlandev->netdev,
"FATAL: Card is not an Intersil Prism2/2.5/3\n");
result = -1;
goto failed;
}
/* get all the station fw id fields in host byte order */
le16_to_cpus(&hw->ident_sta_fw.id);
le16_to_cpus(&hw->ident_sta_fw.variant);
le16_to_cpus(&hw->ident_sta_fw.major);
le16_to_cpus(&hw->ident_sta_fw.minor);
/* strip out the 'special' variant bits */
hw->mm_mods = hw->ident_sta_fw.variant & GENMASK(15, 14);
hw->ident_sta_fw.variant &= ~((u16)GENMASK(15, 14));
if (hw->ident_sta_fw.id == 0x1f) {
netdev_info(wlandev->netdev,
"ident: sta f/w: id=0x%02x %d.%d.%d\n",
hw->ident_sta_fw.id, hw->ident_sta_fw.major,
hw->ident_sta_fw.minor, hw->ident_sta_fw.variant);
} else {
netdev_info(wlandev->netdev,
"ident: ap f/w: id=0x%02x %d.%d.%d\n",
hw->ident_sta_fw.id, hw->ident_sta_fw.major,
hw->ident_sta_fw.minor, hw->ident_sta_fw.variant);
netdev_err(wlandev->netdev, "Unsupported Tertiary AP firmware loaded!\n");
goto failed;
}
/* Compatibility range, Modem supplier */
result = hfa384x_drvr_getconfig(hw, HFA384x_RID_MFISUPRANGE,
&hw->cap_sup_mfi,
sizeof(struct hfa384x_caplevel));
if (result) {
netdev_err(wlandev->netdev, "Failed to retrieve MFISUPRANGE\n");
goto failed;
}
/* get all the Compatibility range, modem interface supplier
* fields in byte order
*/
le16_to_cpus(&hw->cap_sup_mfi.role);
le16_to_cpus(&hw->cap_sup_mfi.id);
le16_to_cpus(&hw->cap_sup_mfi.variant);
le16_to_cpus(&hw->cap_sup_mfi.bottom);
le16_to_cpus(&hw->cap_sup_mfi.top);
netdev_info(wlandev->netdev,
"MFI:SUP:role=0x%02x:id=0x%02x:var=0x%02x:b/t=%d/%d\n",
hw->cap_sup_mfi.role, hw->cap_sup_mfi.id,
hw->cap_sup_mfi.variant, hw->cap_sup_mfi.bottom,
hw->cap_sup_mfi.top);
/* Compatibility range, Controller supplier */
result = hfa384x_drvr_getconfig(hw, HFA384x_RID_CFISUPRANGE,
&hw->cap_sup_cfi,
sizeof(struct hfa384x_caplevel));
if (result) {
netdev_err(wlandev->netdev, "Failed to retrieve CFISUPRANGE\n");
goto failed;
}
/* get all the Compatibility range, controller interface supplier
* fields in byte order
*/
le16_to_cpus(&hw->cap_sup_cfi.role);
le16_to_cpus(&hw->cap_sup_cfi.id);
le16_to_cpus(&hw->cap_sup_cfi.variant);
le16_to_cpus(&hw->cap_sup_cfi.bottom);
le16_to_cpus(&hw->cap_sup_cfi.top);
netdev_info(wlandev->netdev,
"CFI:SUP:role=0x%02x:id=0x%02x:var=0x%02x:b/t=%d/%d\n",
hw->cap_sup_cfi.role, hw->cap_sup_cfi.id,
hw->cap_sup_cfi.variant, hw->cap_sup_cfi.bottom,
hw->cap_sup_cfi.top);
/* Compatibility range, Primary f/w supplier */
result = hfa384x_drvr_getconfig(hw, HFA384x_RID_PRISUPRANGE,
&hw->cap_sup_pri,
sizeof(struct hfa384x_caplevel));
if (result) {
netdev_err(wlandev->netdev, "Failed to retrieve PRISUPRANGE\n");
goto failed;
}
/* get all the Compatibility range, primary firmware supplier
* fields in byte order
*/
le16_to_cpus(&hw->cap_sup_pri.role);
le16_to_cpus(&hw->cap_sup_pri.id);
le16_to_cpus(&hw->cap_sup_pri.variant);
le16_to_cpus(&hw->cap_sup_pri.bottom);
le16_to_cpus(&hw->cap_sup_pri.top);
netdev_info(wlandev->netdev,
"PRI:SUP:role=0x%02x:id=0x%02x:var=0x%02x:b/t=%d/%d\n",
hw->cap_sup_pri.role, hw->cap_sup_pri.id,
hw->cap_sup_pri.variant, hw->cap_sup_pri.bottom,
hw->cap_sup_pri.top);
/* Compatibility range, Station f/w supplier */
result = hfa384x_drvr_getconfig(hw, HFA384x_RID_STASUPRANGE,
&hw->cap_sup_sta,
sizeof(struct hfa384x_caplevel));
if (result) {
netdev_err(wlandev->netdev, "Failed to retrieve STASUPRANGE\n");
goto failed;
}
/* get all the Compatibility range, station firmware supplier
* fields in byte order
*/
le16_to_cpus(&hw->cap_sup_sta.role);
le16_to_cpus(&hw->cap_sup_sta.id);
le16_to_cpus(&hw->cap_sup_sta.variant);
le16_to_cpus(&hw->cap_sup_sta.bottom);
le16_to_cpus(&hw->cap_sup_sta.top);
if (hw->cap_sup_sta.id == 0x04) {
netdev_info(wlandev->netdev,
"STA:SUP:role=0x%02x:id=0x%02x:var=0x%02x:b/t=%d/%d\n",
hw->cap_sup_sta.role, hw->cap_sup_sta.id,
hw->cap_sup_sta.variant, hw->cap_sup_sta.bottom,
hw->cap_sup_sta.top);
} else {
netdev_info(wlandev->netdev,
"AP:SUP:role=0x%02x:id=0x%02x:var=0x%02x:b/t=%d/%d\n",
hw->cap_sup_sta.role, hw->cap_sup_sta.id,
hw->cap_sup_sta.variant, hw->cap_sup_sta.bottom,
hw->cap_sup_sta.top);
}
/* Compatibility range, primary f/w actor, CFI supplier */
result = hfa384x_drvr_getconfig(hw, HFA384x_RID_PRI_CFIACTRANGES,
&hw->cap_act_pri_cfi,
sizeof(struct hfa384x_caplevel));
if (result) {
netdev_err(wlandev->netdev, "Failed to retrieve PRI_CFIACTRANGES\n");
goto failed;
}
/* get all the Compatibility range, primary f/w actor, CFI supplier
* fields in byte order
*/
le16_to_cpus(&hw->cap_act_pri_cfi.role);
le16_to_cpus(&hw->cap_act_pri_cfi.id);
le16_to_cpus(&hw->cap_act_pri_cfi.variant);
le16_to_cpus(&hw->cap_act_pri_cfi.bottom);
le16_to_cpus(&hw->cap_act_pri_cfi.top);
netdev_info(wlandev->netdev,
"PRI-CFI:ACT:role=0x%02x:id=0x%02x:var=0x%02x:b/t=%d/%d\n",
hw->cap_act_pri_cfi.role, hw->cap_act_pri_cfi.id,
hw->cap_act_pri_cfi.variant, hw->cap_act_pri_cfi.bottom,
hw->cap_act_pri_cfi.top);
/* Compatibility range, sta f/w actor, CFI supplier */
result = hfa384x_drvr_getconfig(hw, HFA384x_RID_STA_CFIACTRANGES,
&hw->cap_act_sta_cfi,
sizeof(struct hfa384x_caplevel));
if (result) {
netdev_err(wlandev->netdev, "Failed to retrieve STA_CFIACTRANGES\n");
goto failed;
}
/* get all the Compatibility range, station f/w actor, CFI supplier
* fields in byte order
*/
le16_to_cpus(&hw->cap_act_sta_cfi.role);
le16_to_cpus(&hw->cap_act_sta_cfi.id);
le16_to_cpus(&hw->cap_act_sta_cfi.variant);
le16_to_cpus(&hw->cap_act_sta_cfi.bottom);
le16_to_cpus(&hw->cap_act_sta_cfi.top);
netdev_info(wlandev->netdev,
"STA-CFI:ACT:role=0x%02x:id=0x%02x:var=0x%02x:b/t=%d/%d\n",
hw->cap_act_sta_cfi.role, hw->cap_act_sta_cfi.id,
hw->cap_act_sta_cfi.variant, hw->cap_act_sta_cfi.bottom,
hw->cap_act_sta_cfi.top);
/* Compatibility range, sta f/w actor, MFI supplier */
result = hfa384x_drvr_getconfig(hw, HFA384x_RID_STA_MFIACTRANGES,
&hw->cap_act_sta_mfi,
sizeof(struct hfa384x_caplevel));
if (result) {
netdev_err(wlandev->netdev, "Failed to retrieve STA_MFIACTRANGES\n");
goto failed;
}
/* get all the Compatibility range, station f/w actor, MFI supplier
* fields in byte order
*/
le16_to_cpus(&hw->cap_act_sta_mfi.role);
le16_to_cpus(&hw->cap_act_sta_mfi.id);
le16_to_cpus(&hw->cap_act_sta_mfi.variant);
le16_to_cpus(&hw->cap_act_sta_mfi.bottom);
le16_to_cpus(&hw->cap_act_sta_mfi.top);
netdev_info(wlandev->netdev,
"STA-MFI:ACT:role=0x%02x:id=0x%02x:var=0x%02x:b/t=%d/%d\n",
hw->cap_act_sta_mfi.role, hw->cap_act_sta_mfi.id,
hw->cap_act_sta_mfi.variant, hw->cap_act_sta_mfi.bottom,
hw->cap_act_sta_mfi.top);
/* Serial Number */
result = hfa384x_drvr_getconfig(hw, HFA384x_RID_NICSERIALNUMBER,
snum, HFA384x_RID_NICSERIALNUMBER_LEN);
if (!result) {
netdev_info(wlandev->netdev, "Prism2 card SN: %*pEhp\n",
HFA384x_RID_NICSERIALNUMBER_LEN, snum);
} else {
netdev_err(wlandev->netdev, "Failed to retrieve Prism2 Card SN\n");
goto failed;
}
/* Collect the MAC address */
result = hfa384x_drvr_getconfig(hw, HFA384x_RID_CNFOWNMACADDR,
wlandev->netdev->dev_addr, ETH_ALEN);
if (result != 0) {
netdev_err(wlandev->netdev, "Failed to retrieve mac address\n");
goto failed;
}
/* short preamble is always implemented */
wlandev->nsdcaps |= P80211_NSDCAP_SHORT_PREAMBLE;
/* find out if hardware wep is implemented */
hfa384x_drvr_getconfig16(hw, HFA384x_RID_PRIVACYOPTIMP, &temp);
if (temp)
wlandev->nsdcaps |= P80211_NSDCAP_HARDWAREWEP;
/* get the dBm Scaling constant */
hfa384x_drvr_getconfig16(hw, HFA384x_RID_CNFDBMADJUST, &temp);
hw->dbmadjust = temp;
/* Only enable scan by default on newer firmware */
if (HFA384x_FIRMWARE_VERSION(hw->ident_sta_fw.major,
hw->ident_sta_fw.minor,
hw->ident_sta_fw.variant) <
HFA384x_FIRMWARE_VERSION(1, 5, 5)) {
wlandev->nsdcaps |= P80211_NSDCAP_NOSCAN;
}
/* TODO: Set any internally managed config items */
goto done;
failed:
netdev_err(wlandev->netdev, "Failed, result=%d\n", result);
done:
return result;
}
/*
* prism2sta_globalsetup
*
* Set any global RIDs that we want to set at device activation.
*
* Arguments:
* wlandev wlan device structure
*
* Returns:
* 0 success
* >0 f/w reported error
* <0 driver reported error
*
* Side effects:
*
* Call context:
* process thread
*/
static int prism2sta_globalsetup(struct wlandevice *wlandev)
{
struct hfa384x *hw = wlandev->priv;
/* Set the maximum frame size */
return hfa384x_drvr_setconfig16(hw, HFA384x_RID_CNFMAXDATALEN,
WLAN_DATA_MAXLEN);
}
static int prism2sta_setmulticast(struct wlandevice *wlandev,
struct net_device *dev)
{
int result = 0;
struct hfa384x *hw = wlandev->priv;
u16 promisc;
/* If we're not ready, what's the point? */
if (hw->state != HFA384x_STATE_RUNNING)
goto exit;
if ((dev->flags & (IFF_PROMISC | IFF_ALLMULTI)) != 0)
promisc = P80211ENUM_truth_true;
else
promisc = P80211ENUM_truth_false;
result =
hfa384x_drvr_setconfig16_async(hw, HFA384x_RID_PROMISCMODE,
promisc);
exit:
return result;
}
/*
* prism2sta_inf_handover
*
* Handles the receipt of a Handover info frame. Should only be present
* in APs only.
*
* Arguments:
* wlandev wlan device structure
* inf ptr to info frame (contents in hfa384x order)
*
* Returns:
* nothing
*
* Side effects:
*
* Call context:
* interrupt
*/
static void prism2sta_inf_handover(struct wlandevice *wlandev,
struct hfa384x_inf_frame *inf)
{
pr_debug("received infoframe:HANDOVER (unhandled)\n");
}
/*
* prism2sta_inf_tallies
*
* Handles the receipt of a CommTallies info frame.
*
* Arguments:
* wlandev wlan device structure
* inf ptr to info frame (contents in hfa384x order)
*
* Returns:
* nothing
*
* Side effects:
*
* Call context:
* interrupt
*/
static void prism2sta_inf_tallies(struct wlandevice *wlandev,
struct hfa384x_inf_frame *inf)
{
struct hfa384x *hw = wlandev->priv;
__le16 *src16;
u32 *dst;
__le32 *src32;
int i;
int cnt;
/*
* Determine if these are 16-bit or 32-bit tallies, based on the
* record length of the info record.
*/
cnt = sizeof(struct hfa384x_comm_tallies_32) / sizeof(u32);
if (inf->framelen > 22) {
dst = (u32 *)&hw->tallies;
src32 = (__le32 *)&inf->info.commtallies32;
for (i = 0; i < cnt; i++, dst++, src32++)
*dst += le32_to_cpu(*src32);
} else {
dst = (u32 *)&hw->tallies;
src16 = (__le16 *)&inf->info.commtallies16;
for (i = 0; i < cnt; i++, dst++, src16++)
*dst += le16_to_cpu(*src16);
}
}
/*
* prism2sta_inf_scanresults
*
* Handles the receipt of a Scan Results info frame.
*
* Arguments:
* wlandev wlan device structure
* inf ptr to info frame (contents in hfa384x order)
*
* Returns:
* nothing
*
* Side effects:
*
* Call context:
* interrupt
*/
static void prism2sta_inf_scanresults(struct wlandevice *wlandev,
struct hfa384x_inf_frame *inf)
{
struct hfa384x *hw = wlandev->priv;
int nbss;
struct hfa384x_scan_result *sr = &inf->info.scanresult;
int i;
struct hfa384x_join_request_data joinreq;
int result;
/* Get the number of results, first in bytes, then in results */
nbss = (inf->framelen * sizeof(u16)) -
sizeof(inf->infotype) - sizeof(inf->info.scanresult.scanreason);
nbss /= sizeof(struct hfa384x_scan_result_sub);
/* Print em */
pr_debug("rx scanresults, reason=%d, nbss=%d:\n",
inf->info.scanresult.scanreason, nbss);
for (i = 0; i < nbss; i++) {
pr_debug("chid=%d anl=%d sl=%d bcnint=%d\n",
sr->result[i].chid,
sr->result[i].anl,
sr->result[i].sl, sr->result[i].bcnint);
pr_debug(" capinfo=0x%04x proberesp_rate=%d\n",
sr->result[i].capinfo, sr->result[i].proberesp_rate);
}
/* issue a join request */
joinreq.channel = sr->result[0].chid;
memcpy(joinreq.bssid, sr->result[0].bssid, WLAN_BSSID_LEN);
result = hfa384x_drvr_setconfig(hw,
HFA384x_RID_JOINREQUEST,
&joinreq, HFA384x_RID_JOINREQUEST_LEN);
if (result) {
netdev_err(wlandev->netdev, "setconfig(joinreq) failed, result=%d\n",
result);
}
}
/*
* prism2sta_inf_hostscanresults
*
* Handles the receipt of a Scan Results info frame.
*
* Arguments:
* wlandev wlan device structure
* inf ptr to info frame (contents in hfa384x order)
*
* Returns:
* nothing
*
* Side effects:
*
* Call context:
* interrupt
*/
static void prism2sta_inf_hostscanresults(struct wlandevice *wlandev,
struct hfa384x_inf_frame *inf)
{
struct hfa384x *hw = wlandev->priv;
int nbss;
nbss = (inf->framelen - 3) / 32;
pr_debug("Received %d hostscan results\n", nbss);
if (nbss > 32)
nbss = 32;
kfree(hw->scanresults);
hw->scanresults = kmemdup(inf, sizeof(*inf), GFP_ATOMIC);
if (nbss == 0)
nbss = -1;
/* Notify/wake the sleeping caller. */
hw->scanflag = nbss;
wake_up_interruptible(&hw->cmdq);
};
/*
* prism2sta_inf_chinforesults
*
* Handles the receipt of a Channel Info Results info frame.
*
* Arguments:
* wlandev wlan device structure
* inf ptr to info frame (contents in hfa384x order)
*
* Returns:
* nothing
*
* Side effects:
*
* Call context:
* interrupt
*/
static void prism2sta_inf_chinforesults(struct wlandevice *wlandev,
struct hfa384x_inf_frame *inf)
{
struct hfa384x *hw = wlandev->priv;
unsigned int i, n;
hw->channel_info.results.scanchannels =
inf->info.chinforesult.scanchannels;
for (i = 0, n = 0; i < HFA384x_CHINFORESULT_MAX; i++) {
struct hfa384x_ch_info_result_sub *result;
struct hfa384x_ch_info_result_sub *chinforesult;
int chan;
if (!(hw->channel_info.results.scanchannels & (1 << i)))
continue;
result = &inf->info.chinforesult.result[n];
chan = result->chid - 1;
if (chan < 0 || chan >= HFA384x_CHINFORESULT_MAX)
continue;
chinforesult = &hw->channel_info.results.result[chan];
chinforesult->chid = chan;
chinforesult->anl = result->anl;
chinforesult->pnl = result->pnl;
chinforesult->active = result->active;
pr_debug("chinfo: channel %d, %s level (avg/peak)=%d/%d dB, pcf %d\n",
chan + 1,
(chinforesult->active & HFA384x_CHINFORESULT_BSSACTIVE)
? "signal" : "noise",
chinforesult->anl, chinforesult->pnl,
(chinforesult->active & HFA384x_CHINFORESULT_PCFACTIVE)
? 1 : 0);
n++;
}
atomic_set(&hw->channel_info.done, 2);
hw->channel_info.count = n;
}
void prism2sta_processing_defer(struct work_struct *data)
{
struct hfa384x *hw = container_of(data, struct hfa384x, link_bh);
struct wlandevice *wlandev = hw->wlandev;
struct hfa384x_bytestr32 ssid;
int result;
/* First let's process the auth frames */
{
struct sk_buff *skb;
struct hfa384x_inf_frame *inf;
while ((skb = skb_dequeue(&hw->authq))) {
inf = (struct hfa384x_inf_frame *)skb->data;
prism2sta_inf_authreq_defer(wlandev, inf);
}
}
/* Now let's handle the linkstatus stuff */
if (hw->link_status == hw->link_status_new)
return;
hw->link_status = hw->link_status_new;
switch (hw->link_status) {
case HFA384x_LINK_NOTCONNECTED:
/* I'm currently assuming that this is the initial link
* state. It should only be possible immediately
* following an Enable command.
* Response:
* Block Transmits, Ignore receives of data frames
*/
netif_carrier_off(wlandev->netdev);
netdev_info(wlandev->netdev, "linkstatus=NOTCONNECTED (unhandled)\n");
break;
case HFA384x_LINK_CONNECTED:
/* This one indicates a successful scan/join/auth/assoc.
* When we have the full MLME complement, this event will
* signify successful completion of both mlme_authenticate
* and mlme_associate. State management will get a little
* ugly here.
* Response:
* Indicate authentication and/or association
* Enable Transmits, Receives and pass up data frames
*/
netif_carrier_on(wlandev->netdev);
/* If we are joining a specific AP, set our
* state and reset retries
*/
if (hw->join_ap == 1)
hw->join_ap = 2;
hw->join_retries = 60;
/* Don't call this in monitor mode */
if (wlandev->netdev->type == ARPHRD_ETHER) {
u16 portstatus;
netdev_info(wlandev->netdev, "linkstatus=CONNECTED\n");
/* For non-usb devices, we can use the sync versions */
/* Collect the BSSID, and set state to allow tx */
result = hfa384x_drvr_getconfig(hw,
HFA384x_RID_CURRENTBSSID,
wlandev->bssid,
WLAN_BSSID_LEN);
if (result) {
pr_debug
("getconfig(0x%02x) failed, result = %d\n",
HFA384x_RID_CURRENTBSSID, result);
return;
}
result = hfa384x_drvr_getconfig(hw,
HFA384x_RID_CURRENTSSID,
&ssid, sizeof(ssid));
if (result) {
pr_debug
("getconfig(0x%02x) failed, result = %d\n",
HFA384x_RID_CURRENTSSID, result);
return;
}
prism2mgmt_bytestr2pstr((struct hfa384x_bytestr *)&ssid,
(struct p80211pstrd *)&wlandev->ssid);
/* Collect the port status */
result = hfa384x_drvr_getconfig16(hw,
HFA384x_RID_PORTSTATUS,
&portstatus);
if (result) {
pr_debug
("getconfig(0x%02x) failed, result = %d\n",
HFA384x_RID_PORTSTATUS, result);
return;
}
wlandev->macmode =
(portstatus == HFA384x_PSTATUS_CONN_IBSS) ?
WLAN_MACMODE_IBSS_STA : WLAN_MACMODE_ESS_STA;
/* signal back up to cfg80211 layer */
prism2_connect_result(wlandev, P80211ENUM_truth_false);
/* Get the ball rolling on the comms quality stuff */
prism2sta_commsqual_defer(&hw->commsqual_bh);
}
break;
case HFA384x_LINK_DISCONNECTED:
/* This one indicates that our association is gone. We've
* lost connection with the AP and/or been disassociated.
* This indicates that the MAC has completely cleared it's
* associated state. We * should send a deauth indication
* (implying disassoc) up * to the MLME.
* Response:
* Indicate Deauthentication
* Block Transmits, Ignore receives of data frames
*/
if (wlandev->netdev->type == ARPHRD_ETHER)
netdev_info(wlandev->netdev,
"linkstatus=DISCONNECTED (unhandled)\n");
wlandev->macmode = WLAN_MACMODE_NONE;
netif_carrier_off(wlandev->netdev);
/* signal back up to cfg80211 layer */
prism2_disconnected(wlandev);
break;
case HFA384x_LINK_AP_CHANGE:
/* This one indicates that the MAC has decided to and
* successfully completed a change to another AP. We
* should probably implement a reassociation indication
* in response to this one. I'm thinking that the
* p80211 layer needs to be notified in case of
* buffering/queueing issues. User mode also needs to be
* notified so that any BSS dependent elements can be
* updated.
* associated state. We * should send a deauth indication
* (implying disassoc) up * to the MLME.
* Response:
* Indicate Reassociation
* Enable Transmits, Receives and pass up data frames
*/
netdev_info(wlandev->netdev, "linkstatus=AP_CHANGE\n");
result = hfa384x_drvr_getconfig(hw,
HFA384x_RID_CURRENTBSSID,
wlandev->bssid, WLAN_BSSID_LEN);
if (result) {
pr_debug("getconfig(0x%02x) failed, result = %d\n",
HFA384x_RID_CURRENTBSSID, result);
return;
}
result = hfa384x_drvr_getconfig(hw,
HFA384x_RID_CURRENTSSID,
&ssid, sizeof(ssid));
if (result) {
pr_debug("getconfig(0x%02x) failed, result = %d\n",
HFA384x_RID_CURRENTSSID, result);
return;
}
prism2mgmt_bytestr2pstr((struct hfa384x_bytestr *)&ssid,
(struct p80211pstrd *)&wlandev->ssid);
hw->link_status = HFA384x_LINK_CONNECTED;
netif_carrier_on(wlandev->netdev);
/* signal back up to cfg80211 layer */
prism2_roamed(wlandev);
break;
case HFA384x_LINK_AP_OUTOFRANGE:
/* This one indicates that the MAC has decided that the
* AP is out of range, but hasn't found a better candidate
* so the MAC maintains its "associated" state in case
* we get back in range. We should block transmits and
* receives in this state. Do we need an indication here?
* Probably not since a polling user-mode element would
* get this status from from p2PortStatus(FD40). What about
* p80211?
* Response:
* Block Transmits, Ignore receives of data frames
*/
netdev_info(wlandev->netdev, "linkstatus=AP_OUTOFRANGE (unhandled)\n");
netif_carrier_off(wlandev->netdev);
break;
case HFA384x_LINK_AP_INRANGE:
/* This one indicates that the MAC has decided that the
* AP is back in range. We continue working with our
* existing association.
* Response:
* Enable Transmits, Receives and pass up data frames
*/
netdev_info(wlandev->netdev, "linkstatus=AP_INRANGE\n");
hw->link_status = HFA384x_LINK_CONNECTED;
netif_carrier_on(wlandev->netdev);
break;
case HFA384x_LINK_ASSOCFAIL:
/* This one is actually a peer to CONNECTED. We've
* requested a join for a given SSID and optionally BSSID.
* We can use this one to indicate authentication and
* association failures. The trick is going to be
* 1) identifying the failure, and 2) state management.
* Response:
* Disable Transmits, Ignore receives of data frames
*/
if (hw->join_ap && --hw->join_retries > 0) {
struct hfa384x_join_request_data joinreq;
joinreq = hw->joinreq;
/* Send the join request */
hfa384x_drvr_setconfig(hw,
HFA384x_RID_JOINREQUEST,
&joinreq,
HFA384x_RID_JOINREQUEST_LEN);
netdev_info(wlandev->netdev,
"linkstatus=ASSOCFAIL (re-submitting join)\n");
} else {
netdev_info(wlandev->netdev, "linkstatus=ASSOCFAIL (unhandled)\n");
}
netif_carrier_off(wlandev->netdev);
/* signal back up to cfg80211 layer */
prism2_connect_result(wlandev, P80211ENUM_truth_true);
break;
default:
/* This is bad, IO port problems? */
netdev_warn(wlandev->netdev,
"unknown linkstatus=0x%02x\n", hw->link_status);
return;
}
wlandev->linkstatus = (hw->link_status == HFA384x_LINK_CONNECTED);
}
/*
* prism2sta_inf_linkstatus
*
* Handles the receipt of a Link Status info frame.
*
* Arguments:
* wlandev wlan device structure
* inf ptr to info frame (contents in hfa384x order)
*
* Returns:
* nothing
*
* Side effects:
*
* Call context:
* interrupt
*/
static void prism2sta_inf_linkstatus(struct wlandevice *wlandev,
struct hfa384x_inf_frame *inf)
{
struct hfa384x *hw = wlandev->priv;
hw->link_status_new = le16_to_cpu(inf->info.linkstatus.linkstatus);
schedule_work(&hw->link_bh);
}
/*
* prism2sta_inf_assocstatus
*
* Handles the receipt of an Association Status info frame. Should
* be present in APs only.
*
* Arguments:
* wlandev wlan device structure
* inf ptr to info frame (contents in hfa384x order)
*
* Returns:
* nothing
*
* Side effects:
*
* Call context:
* interrupt
*/
static void prism2sta_inf_assocstatus(struct wlandevice *wlandev,
struct hfa384x_inf_frame *inf)
{
struct hfa384x *hw = wlandev->priv;
struct hfa384x_assoc_status rec;
int i;
memcpy(&rec, &inf->info.assocstatus, sizeof(rec));
le16_to_cpus(&rec.assocstatus);
le16_to_cpus(&rec.reason);
/*
* Find the address in the list of authenticated stations.
* If it wasn't found, then this address has not been previously
* authenticated and something weird has happened if this is
* anything other than an "authentication failed" message.
* If the address was found, then set the "associated" flag for
* that station, based on whether the station is associating or
* losing its association. Something weird has also happened
* if we find the address in the list of authenticated stations
* but we are getting an "authentication failed" message.
*/
for (i = 0; i < hw->authlist.cnt; i++)
if (ether_addr_equal(rec.sta_addr, hw->authlist.addr[i]))
break;
if (i >= hw->authlist.cnt) {
if (rec.assocstatus != HFA384x_ASSOCSTATUS_AUTHFAIL)
netdev_warn(wlandev->netdev,
"assocstatus info frame received for non-authenticated station.\n");
} else {
hw->authlist.assoc[i] =
(rec.assocstatus == HFA384x_ASSOCSTATUS_STAASSOC ||
rec.assocstatus == HFA384x_ASSOCSTATUS_REASSOC);
if (rec.assocstatus == HFA384x_ASSOCSTATUS_AUTHFAIL)
netdev_warn(wlandev->netdev,
"authfail assocstatus info frame received for authenticated station.\n");
}
}
/*
* prism2sta_inf_authreq
*
* Handles the receipt of an Authentication Request info frame. Should
* be present in APs only.
*
* Arguments:
* wlandev wlan device structure
* inf ptr to info frame (contents in hfa384x order)
*
* Returns:
* nothing
*
* Side effects:
*
* Call context:
* interrupt
*
*/
static void prism2sta_inf_authreq(struct wlandevice *wlandev,
struct hfa384x_inf_frame *inf)
{
struct hfa384x *hw = wlandev->priv;
struct sk_buff *skb;
skb = dev_alloc_skb(sizeof(*inf));
if (skb) {
skb_put(skb, sizeof(*inf));
memcpy(skb->data, inf, sizeof(*inf));
skb_queue_tail(&hw->authq, skb);
schedule_work(&hw->link_bh);
}
}
static void prism2sta_inf_authreq_defer(struct wlandevice *wlandev,
struct hfa384x_inf_frame *inf)
{
struct hfa384x *hw = wlandev->priv;
struct hfa384x_authenticate_station_data rec;
int i, added, result, cnt;
u8 *addr;
/*
* Build the AuthenticateStation record. Initialize it for denying
* authentication.
*/
ether_addr_copy(rec.address, inf->info.authreq.sta_addr);
rec.status = cpu_to_le16(P80211ENUM_status_unspec_failure);
/*
* Authenticate based on the access mode.
*/
switch (hw->accessmode) {
case WLAN_ACCESS_NONE:
/*
* Deny all new authentications. However, if a station
* is ALREADY authenticated, then accept it.
*/
for (i = 0; i < hw->authlist.cnt; i++)
if (ether_addr_equal(rec.address,
hw->authlist.addr[i])) {
rec.status = cpu_to_le16(P80211ENUM_status_successful);
break;
}
break;
case WLAN_ACCESS_ALL:
/*
* Allow all authentications.
*/
rec.status = cpu_to_le16(P80211ENUM_status_successful);
break;
case WLAN_ACCESS_ALLOW:
/*
* Only allow the authentication if the MAC address
* is in the list of allowed addresses.
*
* Since this is the interrupt handler, we may be here
* while the access list is in the middle of being
* updated. Choose the list which is currently okay.
* See "prism2mib_priv_accessallow()" for details.
*/
if (hw->allow.modify == 0) {
cnt = hw->allow.cnt;
addr = hw->allow.addr[0];
} else {
cnt = hw->allow.cnt1;
addr = hw->allow.addr1[0];
}
for (i = 0; i < cnt; i++, addr += ETH_ALEN)
if (ether_addr_equal(rec.address, addr)) {
rec.status = cpu_to_le16(P80211ENUM_status_successful);
break;
}
break;
case WLAN_ACCESS_DENY:
/*
* Allow the authentication UNLESS the MAC address is
* in the list of denied addresses.
*
* Since this is the interrupt handler, we may be here
* while the access list is in the middle of being
* updated. Choose the list which is currently okay.
* See "prism2mib_priv_accessdeny()" for details.
*/
if (hw->deny.modify == 0) {
cnt = hw->deny.cnt;
addr = hw->deny.addr[0];
} else {
cnt = hw->deny.cnt1;
addr = hw->deny.addr1[0];
}
rec.status = cpu_to_le16(P80211ENUM_status_successful);
for (i = 0; i < cnt; i++, addr += ETH_ALEN)
if (ether_addr_equal(rec.address, addr)) {
rec.status = cpu_to_le16(P80211ENUM_status_unspec_failure);
break;
}
break;
}
/*
* If the authentication is okay, then add the MAC address to the
* list of authenticated stations. Don't add the address if it
* is already in the list. (802.11b does not seem to disallow
* a station from issuing an authentication request when the
* station is already authenticated. Does this sort of thing
* ever happen? We might as well do the check just in case.)
*/
added = 0;
if (rec.status == cpu_to_le16(P80211ENUM_status_successful)) {
for (i = 0; i < hw->authlist.cnt; i++)
if (ether_addr_equal(rec.address,
hw->authlist.addr[i]))
break;
if (i >= hw->authlist.cnt) {
if (hw->authlist.cnt >= WLAN_AUTH_MAX) {
rec.status = cpu_to_le16(P80211ENUM_status_ap_full);
} else {
ether_addr_copy(hw->authlist.addr[hw->authlist.cnt],
rec.address);
hw->authlist.cnt++;
added = 1;
}
}
}
/*
* Send back the results of the authentication. If this doesn't work,
* then make sure to remove the address from the authenticated list if
* it was added.
*/
rec.algorithm = inf->info.authreq.algorithm;
result = hfa384x_drvr_setconfig(hw, HFA384x_RID_AUTHENTICATESTA,
&rec, sizeof(rec));
if (result) {
if (added)
hw->authlist.cnt--;
netdev_err(wlandev->netdev,
"setconfig(authenticatestation) failed, result=%d\n",
result);
}
}
/*
* prism2sta_inf_psusercnt
*
* Handles the receipt of a PowerSaveUserCount info frame. Should
* be present in APs only.
*
* Arguments:
* wlandev wlan device structure
* inf ptr to info frame (contents in hfa384x order)
*
* Returns:
* nothing
*
* Side effects:
*
* Call context:
* interrupt
*/
static void prism2sta_inf_psusercnt(struct wlandevice *wlandev,
struct hfa384x_inf_frame *inf)
{
struct hfa384x *hw = wlandev->priv;
hw->psusercount = le16_to_cpu(inf->info.psusercnt.usercnt);
}
/*
* prism2sta_ev_info
*
* Handles the Info event.
*
* Arguments:
* wlandev wlan device structure
* inf ptr to a generic info frame
*
* Returns:
* nothing
*
* Side effects:
*
* Call context:
* interrupt
*/
void prism2sta_ev_info(struct wlandevice *wlandev,
struct hfa384x_inf_frame *inf)
{
le16_to_cpus(&inf->infotype);
/* Dispatch */
switch (inf->infotype) {
case HFA384x_IT_HANDOVERADDR:
prism2sta_inf_handover(wlandev, inf);
break;
case HFA384x_IT_COMMTALLIES:
prism2sta_inf_tallies(wlandev, inf);
break;
case HFA384x_IT_HOSTSCANRESULTS:
prism2sta_inf_hostscanresults(wlandev, inf);
break;
case HFA384x_IT_SCANRESULTS:
prism2sta_inf_scanresults(wlandev, inf);
break;
case HFA384x_IT_CHINFORESULTS:
prism2sta_inf_chinforesults(wlandev, inf);
break;
case HFA384x_IT_LINKSTATUS:
prism2sta_inf_linkstatus(wlandev, inf);
break;
case HFA384x_IT_ASSOCSTATUS:
prism2sta_inf_assocstatus(wlandev, inf);
break;
case HFA384x_IT_AUTHREQ:
prism2sta_inf_authreq(wlandev, inf);
break;
case HFA384x_IT_PSUSERCNT:
prism2sta_inf_psusercnt(wlandev, inf);
break;
case HFA384x_IT_KEYIDCHANGED:
netdev_warn(wlandev->netdev, "Unhandled IT_KEYIDCHANGED\n");
break;
case HFA384x_IT_ASSOCREQ:
netdev_warn(wlandev->netdev, "Unhandled IT_ASSOCREQ\n");
break;
case HFA384x_IT_MICFAILURE:
netdev_warn(wlandev->netdev, "Unhandled IT_MICFAILURE\n");
break;
default:
netdev_warn(wlandev->netdev,
"Unknown info type=0x%02x\n", inf->infotype);
break;
}
}
/*
* prism2sta_ev_txexc
*
* Handles the TxExc event. A Transmit Exception event indicates
* that the MAC's TX process was unsuccessful - so the packet did
* not get transmitted.
*
* Arguments:
* wlandev wlan device structure
* status tx frame status word
*
* Returns:
* nothing
*
* Side effects:
*
* Call context:
* interrupt
*/
void prism2sta_ev_txexc(struct wlandevice *wlandev, u16 status)
{
pr_debug("TxExc status=0x%x.\n", status);
}
/*
* prism2sta_ev_tx
*
* Handles the Tx event.
*
* Arguments:
* wlandev wlan device structure
* status tx frame status word
* Returns:
* nothing
*
* Side effects:
*
* Call context:
* interrupt
*/
void prism2sta_ev_tx(struct wlandevice *wlandev, u16 status)
{
pr_debug("Tx Complete, status=0x%04x\n", status);
/* update linux network stats */
wlandev->netdev->stats.tx_packets++;
}
/*
* prism2sta_ev_alloc
*
* Handles the Alloc event.
*
* Arguments:
* wlandev wlan device structure
*
* Returns:
* nothing
*
* Side effects:
*
* Call context:
* interrupt
*/
void prism2sta_ev_alloc(struct wlandevice *wlandev)
{
netif_wake_queue(wlandev->netdev);
}
/*
* create_wlan
*
* Called at module init time. This creates the struct wlandevice structure
* and initializes it with relevant bits.
*
* Arguments:
* none
*
* Returns:
* the created struct wlandevice structure.
*
* Side effects:
* also allocates the priv/hw structures.
*
* Call context:
* process thread
*
*/
static struct wlandevice *create_wlan(void)
{
struct wlandevice *wlandev = NULL;
struct hfa384x *hw = NULL;
/* Alloc our structures */
wlandev = kzalloc(sizeof(*wlandev), GFP_KERNEL);
hw = kzalloc(sizeof(*hw), GFP_KERNEL);
if (!wlandev || !hw) {
kfree(wlandev);
kfree(hw);
return NULL;
}
/* Initialize the network device object. */
wlandev->nsdname = dev_info;
wlandev->msdstate = WLAN_MSD_HWPRESENT_PENDING;
wlandev->priv = hw;
wlandev->open = prism2sta_open;
wlandev->close = prism2sta_close;
wlandev->reset = prism2sta_reset;
wlandev->txframe = prism2sta_txframe;
wlandev->mlmerequest = prism2sta_mlmerequest;
wlandev->set_multicast_list = prism2sta_setmulticast;
wlandev->tx_timeout = hfa384x_tx_timeout;
wlandev->nsdcaps = P80211_NSDCAP_HWFRAGMENT | P80211_NSDCAP_AUTOJOIN;
/* Initialize the device private data structure. */
hw->dot11_desired_bss_type = 1;
return wlandev;
}
void prism2sta_commsqual_defer(struct work_struct *data)
{
struct hfa384x *hw = container_of(data, struct hfa384x, commsqual_bh);
struct wlandevice *wlandev = hw->wlandev;
struct hfa384x_bytestr32 ssid;
struct p80211msg_dot11req_mibget msg;
struct p80211item_uint32 *mibitem = (struct p80211item_uint32 *)
&msg.mibattribute.data;
int result = 0;
if (hw->wlandev->hwremoved)
return;
/* we don't care if we're in AP mode */
if ((wlandev->macmode == WLAN_MACMODE_NONE) ||
(wlandev->macmode == WLAN_MACMODE_ESS_AP)) {
return;
}
/* It only makes sense to poll these in non-IBSS */
if (wlandev->macmode != WLAN_MACMODE_IBSS_STA) {
result = hfa384x_drvr_getconfig(hw, HFA384x_RID_DBMCOMMSQUALITY,
&hw->qual, HFA384x_RID_DBMCOMMSQUALITY_LEN);
if (result) {
netdev_err(wlandev->netdev, "error fetching commsqual\n");
return;
}
pr_debug("commsqual %d %d %d\n",
le16_to_cpu(hw->qual.cq_curr_bss),
le16_to_cpu(hw->qual.asl_curr_bss),
le16_to_cpu(hw->qual.anl_curr_fc));
}
/* Get the signal rate */
msg.msgcode = DIDmsg_dot11req_mibget;
mibitem->did = DIDmib_p2_p2MAC_p2CurrentTxRate;
result = p80211req_dorequest(wlandev, (u8 *)&msg);
if (result) {
pr_debug("get signal rate failed, result = %d\n",
result);
return;
}
switch (mibitem->data) {
case HFA384x_RATEBIT_1:
hw->txrate = 10;
break;
case HFA384x_RATEBIT_2:
hw->txrate = 20;
break;
case HFA384x_RATEBIT_5dot5:
hw->txrate = 55;
break;
case HFA384x_RATEBIT_11:
hw->txrate = 110;
break;
default:
pr_debug("Bad ratebit (%d)\n", mibitem->data);
}
/* Lastly, we need to make sure the BSSID didn't change on us */
result = hfa384x_drvr_getconfig(hw,
HFA384x_RID_CURRENTBSSID,
wlandev->bssid, WLAN_BSSID_LEN);
if (result) {
pr_debug("getconfig(0x%02x) failed, result = %d\n",
HFA384x_RID_CURRENTBSSID, result);
return;
}
result = hfa384x_drvr_getconfig(hw,
HFA384x_RID_CURRENTSSID,
&ssid, sizeof(ssid));
if (result) {
pr_debug("getconfig(0x%02x) failed, result = %d\n",
HFA384x_RID_CURRENTSSID, result);
return;
}
prism2mgmt_bytestr2pstr((struct hfa384x_bytestr *)&ssid,
(struct p80211pstrd *)&wlandev->ssid);
/* Reschedule timer */
mod_timer(&hw->commsqual_timer, jiffies + HZ);
}
void prism2sta_commsqual_timer(struct timer_list *t)
{
struct hfa384x *hw = from_timer(hw, t, commsqual_timer);
schedule_work(&hw->commsqual_bh);
}