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gfiber / kernel / quantenna / 71bd0bc56fa8154608fd33b58c50823a38ab3cc5 / . / drivers / qtn / wlan / ieee80211_node.c
blob: d0da7a3427a6fc5db305cf2495b147465e5afd3f [file] [log] [blame]
/*-
* Copyright (c) 2001 Atsushi Onoe
* Copyright (c) 2002-2005 Sam Leffler, Errno Consulting
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $Id: ieee80211_node.c 2366 2007-05-23 08:43:05Z mrenzmann $
*/
#ifndef EXPORT_SYMTAB
#define EXPORT_SYMTAB
#endif
/*
* IEEE 802.11 node handling support.
*/
#ifndef AUTOCONF_INCLUDED
#include <linux/config.h>
#endif
#include <linux/version.h>
#include <linux/module.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/random.h>
#include <linux/workqueue.h>
#include <linux/jiffies.h>
#include <qtn/qdrv_sch.h>
#include "net80211/if_media.h"
#include "net80211/ieee80211_var.h"
#include "net80211/ieee80211_node.h"
#include "net80211/ieee80211_dot11_msg.h"
#include "net80211/if_ethersubr.h"
#include "net80211/ieee80211_tpc.h"
#include "net80211/ieee80211_tdls.h"
#if defined(CONFIG_QTN_BSA_SUPPORT)
#include "net80211/ieee80211_bsa.h"
#endif
#include <qtn/qtn_net_packet.h>
#include <qtn/skb_recycle.h>
#include "qdrv_sch_const.h"
#include <qtn/qtn_pcap.h>
#include <qtn/shared_params.h>
#include <qtn/qtn_vlan.h>
#include "qtn_logging.h"
#include <asm/board/pm.h>
#include <asm/board/kdump.h>
#define IEEE80211_OBSS_AP_SCAN_INT 25
#define IEEE80211_BSS_DELETE_DELAY 5
#define FREQ_2_4_GHZ 0
#define FREQ_5_GHZ 1
#define DBGMAC "%02X:%02X:%02X:%02X:%02X:%02X"
#define ETHERFMT(a) \
(a)[0], (a)[1], (a)[2], (a)[3], (a)[4], (a)[5]
static void ieee80211_aid_remove(struct ieee80211_node *);
static void ieee80211_idx_remove(struct ieee80211_node *);
static void ieee80211_node_cleanup(struct ieee80211_node *);
static void ieee80211_node_exit(struct ieee80211_node *);
static u_int8_t ieee80211_node_getrssi(const struct ieee80211_node *);
static void _ieee80211_free_node(struct ieee80211_node *);
static void ieee80211_node_timeout(unsigned long);
static void ieee80211_node_table_init(struct ieee80211com *,
struct ieee80211_node_table *, const char *, int);
static void ieee80211_node_table_cleanup(struct ieee80211com *, struct ieee80211_node_table *);
static void ieee80211_node_table_reset(struct ieee80211com *, struct ieee80211_node_table *,
struct ieee80211vap *);
static void ieee80211_node_wds_ageout(unsigned long);
static void ieee80211_timeout_station_work(struct work_struct *work);
void ieee80211_wireless_reassoc(struct ieee80211vap *vap, int debug, int rescan);
static int v_wait = 0;
#define V_WAIT_REASSOC (10)
#define IEEE80211_REAUTH_ENABLE 1
MALLOC_DEFINE(M_80211_NODE, "80211node", "802.11 node state");
struct ieee80211_v_cnt {
uint32_t total;
uint32_t v;
};
#ifdef IEEE80211_DEBUG_REFCNT
static struct ieee80211_node_table *nt_refdebug = NULL;
static void ieee80211_node_show_refdebug_info(struct ieee80211_node *ni)
{
struct node_refdebug_info *info = ni->ni_refdebug_info_p;
struct node_refdebug_info_entry *entry;
int i;
if (info) {
printk("\nnode %p, MAC %pM, ref count %d, entry count %d:\n",
ni,
ni->ni_macaddr,
ieee80211_node_refcnt(ni),
info->entry_count);
for (i = 0; i< info->entry_count; i++) {
entry = &info->entry[i];
/* INC count line filename */
printk("%4s %10d %9d %s\n",
(entry->line & 0xffff0000) ? "dec" : "inc",
entry->count,
(entry->line & 0x0000ffff),
entry->fname);
}
if (info->entry_count == REFDEBUG_ENTRY_MAX) {
printk("%4s %10d %9s %s\n",
"inc", info->inc_count, "unknown", "unknown");
printk("%4s %10d %9s %s\n",
"dec", info->dec_count, "unknown", "unknown");
}
}
}
#endif
void ieee80211_node_dbgref_history_dump(void)
{
#ifdef IEEE80211_DEBUG_REFCNT
struct ieee80211_node *ni, *next;
if (!nt_refdebug)
return;
IEEE80211_NODE_LOCK_IRQ(nt_refdebug);
TAILQ_FOREACH_SAFE(ni, &nt_refdebug->nt_node, ni_list, next) {
ieee80211_node_show_refdebug_info(ni);
}
IEEE80211_NODE_UNLOCK_IRQ(nt_refdebug);
#else
printk("%s: not enabled\n", __func__);
#endif
}
#ifdef IEEE80211_DEBUG_REFCNT
static __sram_text void
ieee80211_node_dbgref_history(const struct ieee80211_node *ni,
const char *filename, int line, int is_increased)
{
unsigned long flags;
struct node_refdebug_info *info;
struct node_refdebug_info_entry *entry;
int i;
info = ni->ni_refdebug_info_p;
if (!info)
return;
line = is_increased ? line : (0xffff0000 | line);
local_irq_save(flags);
for (i = 0; i < REFDEBUG_ENTRY_MAX; i++) {
entry = &info->entry[i];
if (entry->fname == NULL) {
entry->fname = filename;
entry->line = line;
info->entry_count++;
break;
}
if (entry->line == line &&
strcmp(filename, entry->fname) == 0)
break;
}
if (unlikely(i == REFDEBUG_ENTRY_MAX)) {
printk_once("%s: Table is full\n", __FUNCTION__);
if (is_increased)
info->inc_count++;
else
info->dec_count++;
} else {
entry->count++;
}
local_irq_restore(flags);
}
void __sram_text
ieee80211_node_dbgref(const struct ieee80211_node *ni, const char *filename,
const int line, int is_increased)
{
ieee80211_node_dbgref_history(ni, filename, line, is_increased);
}
EXPORT_SYMBOL(ieee80211_node_dbgref);
#endif
/*
* Caller must lock the IEEE80211_NODE_LOCK
* Context: hwIRQ, softIRQ and process context
*/
static void __sram_text
_ieee80211_remove_node(struct ieee80211_node *ni)
{
struct ieee80211_node_table *nt = ni->ni_table;
if (nt != NULL) {
TAILQ_REMOVE(&nt->nt_node, ni, ni_list);
LIST_REMOVE(ni, ni_hash);
ni->ni_table = NULL;
ieee80211_aid_remove(ni);
ieee80211_idx_remove(ni);
}
}
/*
* Reclaim a node. If this is the last reference count then
* do the normal free work. Otherwise remove it from the node
* table and mark it gone by clearing the back-reference.
*/
static void
#ifdef IEEE80211_DEBUG_REFCNT
#define ieee80211_node_reclaim(_nt, _ni) \
ieee80211_node_reclaim_debug(_nt, _ni, __FILE__, __LINE__)
ieee80211_node_reclaim_debug(struct ieee80211_node_table *nt, struct ieee80211_node *ni,
const char *filename, int line)
#else
ieee80211_node_reclaim(struct ieee80211_node_table *nt, struct ieee80211_node *ni)
#endif
{
struct ieee80211com *ic = ni->ni_ic;
IEEE80211_LOCK_IRQ(ic);
if (!ieee80211_node_dectestref(ni)) {
ieee80211_node_dbgref(ni, filename, line, IEEE80211_NODEREF_DECR);
/*
* Other references are present, just remove the
* node from the table so it cannot be found. When
* the references are dropped storage will be
* reclaimed.
*/
_ieee80211_remove_node(ni);
} else {
ieee80211_node_dbgref(ni, filename, line, IEEE80211_NODEREF_DECR);
_ieee80211_free_node(ni);
}
IEEE80211_UNLOCK_IRQ(ic);
}
void
indicate_association(void)
{
}
EXPORT_SYMBOL(indicate_association);
void
indicate_disassociation(void)
{
}
EXPORT_SYMBOL(indicate_disassociation);
void
ieee80211_node_attach(struct ieee80211com *ic)
{
ieee80211_node_table_init(ic, &ic->ic_sta, "station",
IEEE80211_INACT_INIT);
init_timer(&ic->ic_inact);
ic->ic_inact.function = ieee80211_node_timeout;
ic->ic_inact.data = (unsigned long) ic;
ic->ic_inact.expires = jiffies + IEEE80211_INACT_WAIT * HZ;
#if IEEE80211_REAUTH_ENABLE
add_timer(&ic->ic_inact);
#endif
/* copy default check interval from inactivity timer */
ic->ic_scan_results_check = IEEE80211_INACT_WAIT;
init_timer(&ic->ic_scan_results_expire);
ic->ic_scan_results_expire.function = ieee80211_scan_timeout;
ic->ic_scan_results_expire.data = (unsigned long) ic;
ic->ic_scan_results_expire.expires = jiffies + ic->ic_scan_results_check * HZ;
add_timer(&ic->ic_scan_results_expire);
ic->ic_node_free = ieee80211_node_exit;
ic->ic_node_cleanup = ieee80211_node_cleanup;
ic->ic_node_getrssi = ieee80211_node_getrssi;
ic->ic_iterate_nodes = ieee80211_iterate_nodes;
ic->ic_iterate_dev_nodes = ieee80211_iterate_dev_nodes;
#ifdef IEEE80211_DEBUG_REFCNT
kdump_add_troubleshooter(&ieee80211_node_dbgref_history_dump);
nt_refdebug = &ic->ic_sta;
#endif
}
void
ieee80211_node_detach(struct ieee80211com *ic)
{
#if IEEE80211_REAUTH_ENABLE
del_timer(&ic->ic_inact);
#endif
del_timer(&ic->ic_scan_results_expire);
ieee80211_node_table_cleanup(ic, &ic->ic_sta);
}
void
ieee80211_node_vattach(struct ieee80211vap *vap)
{
/* default station inactivity timer setings */
vap->iv_inact_init = IEEE80211_INACT_INIT;
vap->iv_inact_auth = IEEE80211_INACT_AUTH;
vap->iv_inact_probe = IEEE80211_INACT_PROBE;
if (vap->iv_opmode == IEEE80211_M_STA)
vap->iv_inact_run = IEEE80211_INACT_RUN_STA;
else if (vap->iv_opmode == IEEE80211_M_WDS)
vap->iv_inact_run = IEEE80211_INACT_RUN_WDS;
else
vap->iv_inact_run = IEEE80211_INACT_RUN;
}
void
ieee80211_node_latevattach(struct ieee80211vap *vap)
{
struct ieee80211com *ic = vap->iv_ic;
struct ieee80211_rsnparms *rsn;
/*
* Allocate these only if needed. On STA, only needed for TDLS
* connections. Beware that adhoc mode doesn't support ATIM yet
*/
if (vap->iv_opmode == IEEE80211_M_HOSTAP ||
vap->iv_opmode == IEEE80211_M_STA ||
vap->iv_opmode == IEEE80211_M_WDS) {
if (vap->iv_max_aid == 0)
vap->iv_max_aid = IEEE80211_AID_DEF;
else if (vap->iv_max_aid > IEEE80211_AID_MAX)
vap->iv_max_aid = IEEE80211_AID_MAX;
}
ieee80211_reset_bss(vap);
if (vap->iv_opmode == IEEE80211_M_WDS) {
vap->iv_bss = NULL;
vap->iv_auth = ieee80211_authenticator_get(IEEE80211_AUTH_AUTO);
return;
}
/*
* Set up "global settings" in the bss node so that
* each new station automatically inherits them.
*/
rsn = &vap->iv_bss->ni_rsn;
rsn->rsn_ucastcipherset |= 1 << IEEE80211_CIPHER_AES_CCM;
rsn->rsn_ucastcipherset |= 1 << IEEE80211_CIPHER_WEP;
if (IEEE80211_IS_TKIP_ALLOWED(ic))
rsn->rsn_ucastcipherset |= 1 << IEEE80211_CIPHER_TKIP;
if (ic->ic_caps & IEEE80211_C_AES)
rsn->rsn_ucastcipherset |= 1 << IEEE80211_CIPHER_AES_OCB;
if (ic->ic_caps & IEEE80211_C_CKIP)
rsn->rsn_ucastcipherset |= 1 << IEEE80211_CIPHER_CKIP;
/*
* Default unicast cipher to WEP for 802.1x use. If
* WPA is enabled the management code will set these
* values to reflect.
*/
rsn->rsn_ucastcipher = IEEE80211_CIPHER_WEP;
rsn->rsn_ucastkeylen = 104 / NBBY;
/* Initialise with the lowest allowed mcast cipher */
if (!IEEE80211_IS_TKIP_ALLOWED(ic))
rsn->rsn_mcastcipher = IEEE80211_CIPHER_AES_CCM;
else
rsn->rsn_mcastcipher = IEEE80211_CIPHER_TKIP;
rsn->rsn_mcastkeylen = 128 / NBBY;
/*
* We support both WPA-PSK and 802.1x; the one used
* is determined by the authentication mode and the
* setting of the PSK state.
*/
rsn->rsn_keymgmtset = WPA_ASE_8021X_UNSPEC | WPA_ASE_8021X_PSK;
rsn->rsn_keymgmt = WPA_ASE_8021X_PSK;
vap->iv_auth = ieee80211_authenticator_get(vap->iv_bss->ni_authmode);
}
void
ieee80211_node_vdetach(struct ieee80211vap *vap)
{
struct ieee80211com *ic = vap->iv_ic;
if (vap->iv_bss != NULL)
ieee80211_ref_node(vap->iv_bss);
ieee80211_node_table_reset(ic, &ic->ic_sta, vap);
if (vap->iv_bss != NULL) {
ieee80211_free_node(vap->iv_bss);
vap->iv_bss = NULL;
}
}
/*
* Empty data frame used to do rate training. Goes through the normal
* data path, to trigger the rate adaptation algorithm to find the optimal rate
* before we send traffic.
*
* OUI extended Ethertype frame for Quantenna OUI is used for rate training
* packets. The bridge at the other end of the link will discard these frames
* as they are destined for the address of the WiFi interface, and there is
* no handler installed for this frame type.
*/
static void ieee80211_send_dummy_data(struct ieee80211_node *ni,
struct ieee80211vap *vap, int skb_flags)
{
struct qtn_skb_recycle_list *recycle_list = qtn_get_shared_recycle_list();
struct sk_buff *skb = qtn_skb_recycle_list_pop(recycle_list, &recycle_list->stats_qdrv);
struct qtn_dummy_frame *df;
int total_len = QTN_RATE_TRAIN_DATA_LEN + sizeof(*df) - sizeof(df->eh);
uint32_t *payload;
uint32_t *data;
if (!skb) {
/* If the recycle list is empty, use a smaller buffer to reduce memory pressure */
skb = dev_alloc_skb(QTN_RATE_TRAIN_DATA_LEN * 3);
if (!skb) {
return;
}
}
df = (struct qtn_dummy_frame *)skb_put(skb, sizeof(df->eh));
payload = (uint32_t *)skb_put(skb, total_len);
skb_reset_network_header(skb);
memcpy(df->eh.ether_shost, vap->iv_myaddr, sizeof(df->eh.ether_shost));
memcpy(df->eh.ether_dhost, ni->ni_macaddr, sizeof(df->eh.ether_dhost));
memset(payload, QTN_RATE_TRAIN_BYTE, total_len);
df->llc.llc_dsap = LLC_SNAP_LSAP;
df->llc.llc_ssap = LLC_SNAP_LSAP;
df->llc.llc_un.type_snap.control = LLC_UI;
df->llc.llc_un.type_snap.org_code[0] = 0;
df->llc.llc_un.type_snap.org_code[1] = 0;
df->llc.llc_un.type_snap.org_code[2] = 0;
df->llc.llc_un.type_snap.ether_type = htons(ETHERTYPE_802A);
ieee80211_oui_add_qtn(df->ouie.oui);
put_unaligned(htons(QTN_OUIE_TYPE_TRAINING), &df->ouie.type);
df->eh.ether_type = htons(total_len);
if (ni->ni_rate_train_hash) {
data = (uint32_t *)(df + 1);
put_unaligned(htonl(ni->ni_rate_train_hash), data + 1);
}
skb->dev = vap->iv_dev;
qdrv_sch_classify_bk(skb);
ieee80211_ref_node(ni);
QTN_SKB_CB_NI(skb) = ni;
M_FLAG_SET(skb, M_RATE_TRAINING);
M_FLAG_SET(skb, M_NO_AMSDU);
M_FLAG_SET(skb, M_VSP_CHK);
if (skb_flags != 0)
M_FLAG_SET(skb, (skb_flags));
dev_queue_xmit(skb);
}
/*
* Rate training - send a bunch of NULL data packets to get the rate
* retry algorithm to converge quickly.
*/
static void ieee80211_sta_add_training(unsigned long arg)
{
struct ieee80211_node *ni = (struct ieee80211_node *)arg;
struct ieee80211com *ic = ni->ni_ic;
struct ieee80211vap *vap = ni->ni_vap;
int i;
spin_lock(&ni->ni_lock);
if (ni->ni_training_count < vap->iv_rate_training_count) {
ni->ni_training_count++;
spin_unlock(&ni->ni_lock);
mod_timer(&ni->ni_training_timer, jiffies + 1);
for (i = 0; i < vap->iv_rate_training_burst_count; ++i) {
ieee80211_send_dummy_data(ni, vap, 0);
}
} else {
ni->ni_training_flag = NI_TRAINING_END;
spin_unlock(&ni->ni_lock);
printk("%s: [%pM] %s ends\n",
vap->iv_dev->name, ni->ni_macaddr,
ic->ic_ocac.ocac_running ? "T process" : "training");
ieee80211_free_node(ni);
}
}
/*
* Rate detecting - send a bunch of NULL data packets to get
* the current Tx rate.
*/
static void ieee80211_tdls_rate_detection(unsigned long arg)
{
struct ieee80211_node *ni = (struct ieee80211_node *)arg;
struct ieee80211vap *vap = ni->ni_vap;
int i;
if (ni->ni_training_count < vap->tdls_training_pkt_cnt) {
for (i = 0; i < DEFAULT_TDLS_RATE_DETECTION_BURST_CNT; ++i) {
ieee80211_send_dummy_data(ni, vap, 0);
}
ni->ni_training_count++;
mod_timer(&ni->ni_training_timer, jiffies + 2);
} else {
IEEE80211_TDLS_DPRINTF(vap, IEEE80211_MSG_TDLS, IEEE80211_TDLS_MSG_WARN,
"[%pM] rate detecting ends\n", ni->ni_macaddr);
spin_lock(&ni->ni_lock);
ni->ni_training_flag = NI_TRAINING_END;
spin_unlock(&ni->ni_lock);
ieee80211_free_node(ni);
}
}
static void ieee80211_add_assoc_record(struct ieee80211com *ic, struct ieee80211_node *ni)
{
struct ieee80211_assoc_history *ah = &ic->ic_assoc_history;
struct timeval time;
time_t oldest_time = ah->ah_timestamp[0];
int i, index = 0;
if (ni->ni_associd == 0) {
return;
}
do_gettimeofday(&time);
for (i = 0; i < IEEE80211_MAX_ASSOC_HISTORY; i++) {
if (IEEE80211_ADDR_EQ(ah->ah_macaddr_table[i], ni->ni_macaddr)) {
ah->ah_timestamp[i] = time.tv_sec;
return;
}
}
for (i = 0; i < IEEE80211_MAX_ASSOC_HISTORY; i++) {
if (ah->ah_timestamp[i] <= 0) {
IEEE80211_ADDR_COPY(ah->ah_macaddr_table[i], ni->ni_macaddr);
ah->ah_timestamp[i] = time.tv_sec;
return;
}
}
for (i = 1; i < IEEE80211_MAX_ASSOC_HISTORY; i++) {
if (ah->ah_timestamp[i] < oldest_time) {
oldest_time = ah->ah_timestamp[i];
index = i;
}
}
IEEE80211_ADDR_COPY(ah->ah_macaddr_table[index], ni->ni_macaddr);
ah->ah_timestamp[index] = time.tv_sec;
}
void ieee80211_active_training_timer(struct ieee80211_node *ni,
void (*call_back)(unsigned long), unsigned int interval)
{
if ((!ni) || (!call_back)) {
printk("%s: Get invalid arguments\n", __func__);
return;
}
/* Reference for the timer below */
spin_lock_bh(&ni->ni_lock);
/* If training already started, don't start new training. */
if (ni->ni_training_flag == NI_TRAINING_RUNNING) {
printk("%s: Rate training is running\n", __func__);
spin_unlock_bh(&ni->ni_lock);
return;
} else {
ieee80211_ref_node(ni);
}
ni->ni_training_count = 0;
ni->ni_training_flag = NI_TRAINING_RUNNING;
ni->ni_training_start = jiffies + interval;
spin_unlock_bh(&ni->ni_lock);
ni->ni_training_timer.function = call_back;
ni->ni_training_timer.data = (unsigned long)ni;
/*
* We stagger the start of the training for the node to prevent situations
* where all nodes associate immediately, causing out of resource due to
* allocating too many training packets.
*/
mod_timer(&ni->ni_training_timer, jiffies + interval);
}
static int ieee80211_node_training_required(const struct ieee80211_node *ni)
{
const int skip_training = TOPAZ_FPGA_PLATFORM || QTN_GENPCAP;
struct ieee80211vap *vap = ni->ni_vap;
uint32_t ret = 0;
/* We only do rate training for Q->Q links */
if (!skip_training && (ni->ni_qtn_assoc_ie != NULL)
&& (vap->iv_opmode != IEEE80211_M_WDS)) {
if (((vap->iv_opmode == IEEE80211_M_HOSTAP) && (ni != vap->iv_bss))
|| ((vap->iv_opmode == IEEE80211_M_STA) && (ni == vap->iv_bss))) {
ret = IEEE80211_NODE_TRAINING_NORMAL_MODE;
} else if (((vap->iv_opmode == IEEE80211_M_STA)
&& (vap->tdls_discovery_interval == 0)
&& IEEE80211_NODE_IS_TDLS_ACTIVE(ni))) {
ret = IEEE80211_NODE_TRAINING_TDLS_MODE;
}
}
return ret;
}
void ieee80211_node_training_start(struct ieee80211_node *ni, int immediate)
{
struct ieee80211com *ic = ni->ni_ic;
uint32_t training_delay_secs;
/*
* We stagger the start of the training for the node to prevent situations
* where all nodes associate immediately, causing out of resource due to
* allocating too many training packets.
*/
training_delay_secs = 1 + (immediate ? 0 : (IEEE80211_NODE_AID(ni) % 10));
/* Reference for the timer below */
spin_lock_bh(&ni->ni_lock);
/*
* If training already started, don't reference the node again or
* we could leak the node if it's discarded.
*
* This happens on the STA side as the BSS node is retained longer
* than on the AP side.
*/
if (ni->ni_training_flag != NI_TRAINING_RUNNING) {
ieee80211_ref_node(ni);
}
ni->ni_training_count = 0;
ni->ni_training_flag = NI_TRAINING_RUNNING;
spin_unlock_bh(&ni->ni_lock);
ni->ni_training_timer.function = ieee80211_sta_add_training;
ni->ni_training_timer.data = (unsigned long)ni;
mod_timer(&ni->ni_training_timer, jiffies + (training_delay_secs * HZ));
printk("%s: [%pM] %s starts in %d seconds, idx %u\n",
ni->ni_vap->iv_dev->name, ni->ni_macaddr,
ic->ic_ocac.ocac_running ? "T process" : "training",
training_delay_secs,
IEEE80211_NODE_IDX_UNMAP(ni->ni_node_idx));
}
void
_ieee80211_node_authorize(struct ieee80211_node *ni)
{
struct ieee80211vap *vap= ni->ni_vap;
struct ieee80211com *ic = ni->ni_ic;
uint32_t ret;
ieee80211_add_assoc_record(ic, ni);
ni->ni_flags |= IEEE80211_NODE_AUTH;
ni->ni_inact_reload = vap->iv_inact_run;
ic->ic_node_auth_state_change(ni, 1);
ret = ieee80211_node_training_required(ni);
if (ret == IEEE80211_NODE_TRAINING_NORMAL_MODE) {
ieee80211_node_training_start(ni, 0);
} else if (ret == IEEE80211_NODE_TRAINING_TDLS_MODE) {
ieee80211_tdls_add_rate_detection(ni);
}
}
void
ieee80211_tdls_add_rate_detection(struct ieee80211_node *ni)
{
struct ieee80211vap *vap= ni->ni_vap;
struct ieee80211_node *ap_ni = vap->iv_bss;
unsigned int interval;
int smthd_rssi;
if (ap_ni == NULL)
return;
smthd_rssi = ieee80211_tdls_get_smoothed_rssi(vap, ni);
if (smthd_rssi < vap->tdls_min_valid_rssi)
return;
interval = HZ + (HZ * IEEE80211_NODE_AID(ap_ni) % 5) +
(HZ / 2 * (IEEE80211_NODE_AID(ni) % 10));
ieee80211_active_training_timer(ni, ieee80211_tdls_rate_detection, interval);
IEEE80211_TDLS_DPRINTF(vap, IEEE80211_MSG_TDLS, IEEE80211_TDLS_MSG_WARN,
"TDLS %s: Rate detection starts for %s AID %d at %lu\n", __func__,
ether_sprintf(ni->ni_macaddr), IEEE80211_NODE_AID(ni), jiffies + interval);
}
EXPORT_SYMBOL(ieee80211_tdls_add_rate_detection);
/*
* Port authorize/unauthorize interfaces for use by an authenticator.
*/
void
ieee80211_node_authorize(struct ieee80211_node *ni)
{
int msg = IEEE80211_DOT11_MSG_CLIENT_CONNECTED;
_ieee80211_node_authorize(ni);
if (ni->ni_vap->iv_opmode == IEEE80211_M_STA) {
msg = IEEE80211_DOT11_MSG_AP_CONNECTED;
}
if (ni->ni_authmode <= IEEE80211_AUTH_SHARED) {
ieee80211_eventf(ni->ni_vap->iv_dev, QEVT_COMMON_PREFIX" %s ["DBGMAC"] [%s/%s] SSID %s",
d11_m[msg],
ETHERFMT(ni->ni_bssid),
ni->ni_authmode <= IEEE80211_AUTH_OPEN ? "OPEN" : "SHARED",
"NONE",
ni->ni_essid);
}
}
EXPORT_SYMBOL(ieee80211_node_authorize);
void
ieee80211_node_unauthorize(struct ieee80211_node *ni)
{
struct ieee80211com *ic = ni->ni_ic;
struct ieee80211vap *vap = ni->ni_vap;
if (ieee80211_node_is_authorized(ni) &&
!IEEE80211_ADDR_EQ(vap->iv_myaddr, ni->ni_macaddr))
vap->iv_disconn_cnt++;
ni->ni_flags &= ~IEEE80211_NODE_AUTH;
ic->ic_node_auth_state_change(ni, 0);
}
EXPORT_SYMBOL(ieee80211_node_unauthorize);
/*
* Set/change the channel. The rate set is also updated
* to ensure a consistent view by drivers.
*/
void
ieee80211_node_set_chan(struct ieee80211com *ic, struct ieee80211_node *ni)
{
struct ieee80211_channel *chan = ic->ic_bsschan;
KASSERT(chan != IEEE80211_CHAN_ANYC, ("BSS channel not set up"));
ni->ni_chan = chan;
if (IEEE80211_IS_CHAN_HALF(ic->ic_curchan)) {
ni->ni_rates = ic->ic_sup_half_rates;
} else if (IEEE80211_IS_CHAN_QUARTER(ic->ic_curchan)) {
ni->ni_rates = ic->ic_sup_quarter_rates;
} else {
ni->ni_rates = ic->ic_sup_rates[ic->ic_curmode];
}
}
static __inline void
copy_bss(struct ieee80211_node *nbss, const struct ieee80211_node *obss)
{
/* propagate useful state */
nbss->ni_authmode = obss->ni_authmode;
nbss->ni_ath_flags = obss->ni_ath_flags;
nbss->ni_txpower = obss->ni_txpower;
nbss->ni_vlan = obss->ni_vlan;
nbss->ni_rsn = obss->ni_rsn;
/* XXX statistics? */
}
/*
* Create an IBSS or BSS.
*/
void
ieee80211_create_bss(struct ieee80211vap* vap, struct ieee80211_channel *chan)
{
struct ieee80211com *ic = vap->iv_ic;
struct ieee80211_node *ni;
struct ieee80211_channel *previous_chann = NULL;
if (vap->iv_opmode == IEEE80211_M_WDS) {
IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
"%s: skipping for WDS mode\n",
__func__);
if (ic->ic_bsschan == IEEE80211_CHAN_ANYC) {
ni = ieee80211_find_node(&ic->ic_sta, vap->iv_myaddr);
if (!ni)
return;
/* Ensure ic_bsschan is set if WDS has been created first */
ic->ic_bsschan = chan;
ieee80211_node_set_chan(ic, ni);
ieee80211_free_node(ni);
}
return;
}
IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN,
"%s: creating on channel %u\n", __func__,
ieee80211_chan2ieee(ic, chan));
/* Check to see if we already have a node for this mac */
ni = ieee80211_find_node(&ic->ic_sta, vap->iv_myaddr);
if (ni == NULL) {
ni = ieee80211_alloc_node(&ic->ic_sta, vap, vap->iv_myaddr, "bss create");
}
KASSERT(ni != NULL, ("unable to find or create BSS node"));
ni->ni_node_idx = vap->iv_vapnode_idx;
ni->ni_vhtop.chanwidth = ic->ic_vhtop.chanwidth;
IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_myaddr);
ni->ni_esslen = vap->iv_des_ssid[0].len;
memcpy(ni->ni_essid, vap->iv_des_ssid[0].ssid, ni->ni_esslen);
if (vap->iv_bss != NULL)
copy_bss(ni, vap->iv_bss);
ni->ni_intval = ic->ic_lintval;
if (vap->iv_flags & IEEE80211_F_PRIVACY)
ni->ni_capinfo |= IEEE80211_CAPINFO_PRIVACY;
if (ic->ic_phytype == IEEE80211_T_FH) {
ni->ni_fhdwell = 200; /* XXX */
ni->ni_fhindex = 1;
}
if (vap->iv_opmode == IEEE80211_M_IBSS) {
vap->iv_flags |= IEEE80211_F_SIBSS;
ni->ni_capinfo |= IEEE80211_CAPINFO_IBSS; /* XXX */
if (vap->iv_flags & IEEE80211_F_DESBSSID)
IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_des_bssid);
else
ni->ni_bssid[0] |= 0x02; /* local bit for IBSS */
} else if (vap->iv_opmode == IEEE80211_M_AHDEMO) {
if (vap->iv_flags & IEEE80211_F_DESBSSID)
IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_des_bssid);
else {
ni->ni_bssid[0] = 0x00;
ni->ni_bssid[1] = 0x00;
ni->ni_bssid[2] = 0x00;
ni->ni_bssid[3] = 0x00;
ni->ni_bssid[4] = 0x00;
ni->ni_bssid[5] = 0x00;
}
}
ni->ni_vendor = PEER_VENDOR_QTN;
if (vap->iv_opmode == IEEE80211_M_HOSTAP)
ni->ni_node_type = IEEE80211_NODE_TYPE_VAP;
else if (vap->iv_opmode == IEEE80211_M_STA)
ni->ni_node_type = IEEE80211_NODE_TYPE_STA;
/* clear DFS CAC state on previous channel */
if (ic->ic_bsschan != IEEE80211_CHAN_ANYC &&
ic->ic_bsschan->ic_freq != chan->ic_freq &&
IEEE80211_IS_CHAN_CACDONE(ic->ic_bsschan)) {
/*
* IEEE80211_CHAN_DFS_CAC_DONE indicates whether or not to do CAC afresh.
* US : IEEE80211_CHAN_DFS_CAC_DONE shall be cleared whenver we move to
* a different channel
* ETSI : IEEE80211_CHAN_DFS_CAC_DONE shall be retained; Only event which
* would mark the channel as unusable is the radar indication
*/
if (ic->ic_dfs_is_eu_region() == false) {
previous_chann = ic->ic_bsschan;
previous_chann->ic_flags &= ~IEEE80211_CHAN_DFS_CAC_DONE;
if (ic->ic_mark_channel_dfs_cac_status) {
ic->ic_mark_channel_dfs_cac_status(ic, previous_chann, IEEE80211_CHAN_DFS_CAC_DONE, false);
ic->ic_mark_channel_dfs_cac_status(ic, previous_chann, IEEE80211_CHAN_DFS_CAC_IN_PROGRESS, false);
}
/* Mark the channel as not_available and ready for cac */
if (ic->ic_mark_channel_availability_status) {
ic->ic_mark_channel_availability_status(ic, previous_chann,
IEEE80211_CHANNEL_STATUS_NOT_AVAILABLE_CAC_REQUIRED);
}
printk(KERN_DEBUG "ieee80211_create_bss:"
"Clearing CAC_DONE Status for chan %d\n",
previous_chann->ic_ieee);
}
}
/*
* Fix the channel and related attributes.
* If a channel change was initiated, ieee80211_channel_switch_post will handle it
*/
ic->ic_bsschan = chan;
ieee80211_node_set_chan(ic, ni);
ieee80211_sta_join1(vap, ni, 0);
ieee80211_free_node(ni);
}
EXPORT_SYMBOL(ieee80211_create_bss);
/*
* Reset bss state on transition to the INIT state.
* Clear any stations from the table (they have been
* deauth'd) and reset the bss node (clears key, rate,
* etc. state).
*/
void
ieee80211_reset_bss(struct ieee80211vap *vap)
{
struct ieee80211com *ic = vap->iv_ic;
struct ieee80211_node *obss = vap->iv_bss;
struct ieee80211_node *ni;
if (vap->iv_opmode == IEEE80211_M_WDS) {
vap->iv_bss = NULL;
return;
}
if (obss != NULL) {
ieee80211_ref_node(obss);
}
ieee80211_node_table_reset(ic, &ic->ic_sta, vap);
ieee80211_reset_erp(ic, ic->ic_curmode);
ni = ieee80211_alloc_node(&ic->ic_sta, vap, vap->iv_myaddr, "bss reset");
KASSERT(ni != NULL, ("unable to set up BSS node"));
ni->ni_vendor = PEER_VENDOR_QTN;
if (vap->iv_opmode == IEEE80211_M_HOSTAP)
ni->ni_node_type = IEEE80211_NODE_TYPE_VAP;
else if (vap->iv_opmode == IEEE80211_M_STA)
ni->ni_node_type = IEEE80211_NODE_TYPE_STA;
vap->iv_bss = ni;
IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_myaddr);
if (obss != NULL) {
copy_bss(ni, obss);
ni->ni_intval = ic->ic_lintval;
ieee80211_free_node(obss);
}
ieee80211_free_node(ni);
}
static int
match_ssid(const struct ieee80211_node *ni,
int nssid, const struct ieee80211_scan_ssid ssids[])
{
int i;
if (!ni)
return 0;
for (i = 0; i < nssid; i++) {
if (ni->ni_esslen == ssids[i].len &&
memcmp(ni->ni_essid, ssids[i].ssid, ni->ni_esslen) == 0)
return 1;
}
return 0;
}
/*
* Test a node for suitability/compatibility.
*/
static int
check_bss(struct ieee80211vap *vap, struct ieee80211_node *ni)
{
struct ieee80211com *ic = ni->ni_ic;
uint8_t rate;
unsigned int chan;
chan = ieee80211_chan2ieee(ic, ni->ni_chan);
if (unlikely(chan == IEEE80211_CHAN_ANY))
return 0;
if (isclr(ic->ic_chan_active, chan))
return 0;
if (vap->iv_opmode == IEEE80211_M_IBSS) {
if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0)
return 0;
} else {
if ((ni->ni_capinfo & IEEE80211_CAPINFO_ESS) == 0)
return 0;
}
if (vap->iv_flags & IEEE80211_F_PRIVACY) {
if ((ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) == 0)
return 0;
} else {
/* Reference: IEEE802.11 7.3.1.4
* This means that the data confidentiality service is required
* for all frames exchanged with this STA in IBSS and for all
* frames exchanged within the entire BSS otherwise
*/
if (ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY)
return 0;
}
rate = ieee80211_fix_rate(ni, IEEE80211_F_DONEGO | IEEE80211_F_DOFRATE);
if (rate & IEEE80211_RATE_BASIC)
return 0;
if (vap->iv_des_nssid != 0 &&
!match_ssid(ni, vap->iv_des_nssid, vap->iv_des_ssid))
return 0;
if ((vap->iv_flags & IEEE80211_F_DESBSSID) &&
!IEEE80211_ADDR_EQ(vap->iv_des_bssid, ni->ni_bssid))
return 0;
return 1;
}
#ifdef IEEE80211_DEBUG
/*
* Display node suitability/compatibility.
*/
static void
check_bss_debug(struct ieee80211vap *vap, struct ieee80211_node *ni)
{
struct ieee80211com *ic = ni->ni_ic;
uint8_t rate;
unsigned int chan;
int fail;
chan = ieee80211_chan2ieee(ic, ni->ni_chan);
fail = 0;
if (chan == IEEE80211_CHAN_ANY || isclr(ic->ic_chan_active, chan))
fail |= 0x01;
if (vap->iv_opmode == IEEE80211_M_IBSS) {
if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0)
fail |= 0x02;
} else {
if ((ni->ni_capinfo & IEEE80211_CAPINFO_ESS) == 0)
fail |= 0x02;
}
if (vap->iv_flags & IEEE80211_F_PRIVACY) {
if ((ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) == 0)
fail |= 0x04;
} else {
/* This means that the data confidentiality service is required
* for all frames exchanged within this BSS. (IEEE802.11 7.3.1.4)
*/
if (ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY)
fail |= 0x04;
}
rate = ieee80211_fix_rate(ni, IEEE80211_F_DONEGO | IEEE80211_F_DOFRATE);
if (rate & IEEE80211_RATE_BASIC)
fail |= 0x08;
if (vap->iv_des_nssid != 0 &&
!match_ssid(ni, vap->iv_des_nssid, vap->iv_des_ssid))
fail |= 0x10;
if ((vap->iv_flags & IEEE80211_F_DESBSSID) &&
!IEEE80211_ADDR_EQ(vap->iv_des_bssid, ni->ni_bssid))
fail |= 0x20;
printk(" %c %s", fail ? '-' : '+', ether_sprintf(ni->ni_macaddr));
printk(" %s%c", ether_sprintf(ni->ni_bssid), fail & 0x20 ? '!' : ' ');
printk(" %3d%c",
chan, fail & 0x01 ? '!' : ' ');
printk(" %+4d", ni->ni_rssi);
printk(" %2dM%c", (rate & IEEE80211_RATE_VAL) / 2,
fail & 0x08 ? '!' : ' ');
printk(" %4s%c",
(ni->ni_capinfo & IEEE80211_CAPINFO_ESS) ? "ess" :
(ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) ? "ibss" :
"????",
fail & 0x02 ? '!' : ' ');
printk(" %3s%c ",
(ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) ? "wep" : "no",
fail & 0x04 ? '!' : ' ');
ieee80211_print_essid(ni->ni_essid, ni->ni_esslen);
printk("%s\n", fail & 0x10 ? "!" : "");
}
#endif /* IEEE80211_DEBUG */
/*
* Handle 802.11 ad hoc network merge. The
* convention, set by the Wireless Ethernet Compatibility Alliance
* (WECA), is that an 802.11 station will change its BSSID to match
* the "oldest" 802.11 ad hoc network, on the same channel, that
* has the station's desired SSID. The "oldest" 802.11 network
* sends beacons with the greatest TSF timestamp.
*
* The caller is assumed to validate TSF's before attempting a merge.
*
* Return !0 if the BSSID changed, 0 otherwise.
*/
int
ieee80211_ibss_merge(struct ieee80211_node *ni)
{
struct ieee80211vap *vap = ni->ni_vap;
struct ieee80211com *ic = ni->ni_ic;
if (ni == vap->iv_bss ||
IEEE80211_ADDR_EQ(ni->ni_bssid, vap->iv_bss->ni_bssid)) {
/* unchanged, nothing to do */
return 0;
}
if (!check_bss(vap, ni)) {
/* capabilities mismatch */
IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC,
"%s: merge failed, capabilities mismatch\n", __func__);
#ifdef IEEE80211_DEBUG
if (ieee80211_msg_assoc(vap))
check_bss_debug(vap, ni);
#endif
vap->iv_stats.is_ibss_capmismatch++;
return 0;
}
IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC,
"%s: new bssid %s: %s preamble, %s slot time%s\n", __func__,
ether_sprintf(ni->ni_bssid),
ic->ic_flags & IEEE80211_F_SHPREAMBLE ? "short" : "long",
ic->ic_flags & IEEE80211_F_SHSLOT ? "short" : "long",
ic->ic_flags & IEEE80211_F_USEPROT ? ", protection" : "");
ieee80211_ref_node(ni);
ieee80211_sta_join1(vap, ni, 0);
return 1;
}
EXPORT_SYMBOL(ieee80211_ibss_merge);
static __inline int
ssid_equal(const struct ieee80211_node *a, const struct ieee80211_node *b)
{
if (!a || !b)
return 0;
return (a->ni_esslen == b->ni_esslen &&
memcmp(a->ni_essid, b->ni_essid, a->ni_esslen) == 0);
}
void ieee80211_update_active_chanlist(struct ieee80211com *ic, int bw)
{
COMPILE_TIME_ASSERT(sizeof(ic->ic_chan_active) == sizeof(ic->ic_chan_active_80));
COMPILE_TIME_ASSERT(sizeof(ic->ic_chan_active) == sizeof(ic->ic_chan_active_40));
COMPILE_TIME_ASSERT(sizeof(ic->ic_chan_active) == sizeof(ic->ic_chan_active_20));
switch(bw) {
case BW_HT80:
memcpy(ic->ic_chan_active, ic->ic_chan_active_80, sizeof(ic->ic_chan_active));
break;
case BW_HT40:
memcpy(ic->ic_chan_active, ic->ic_chan_active_40, sizeof(ic->ic_chan_active));
break;
default:
memcpy(ic->ic_chan_active, ic->ic_chan_active_20, sizeof(ic->ic_chan_active));
break;
}
}
void ieee80211_nonqtn_sta_join(struct ieee80211vap *vap,
struct ieee80211_node *ni, const char *caller)
{
struct ieee80211com *ic = vap->iv_ic;
if (!ieee80211_node_is_qtn(ni)) {
vap->iv_non_qtn_sta_assoc++;
ic->ic_nonqtn_sta++;
ieee80211_set_recv_ctrlpkts(vap);
IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
"%s - increases counter ic_nonqtn_sta %u, iv_non_qtn_sta_assoc %u\n",
caller, ic->ic_nonqtn_sta, vap->iv_non_qtn_sta_assoc);
}
}
void ieee80211_nonqtn_sta_leave(struct ieee80211vap *vap,
struct ieee80211_node *ni, const char *caller)
{
struct ieee80211com *ic = vap->iv_ic;
if (!ieee80211_node_is_qtn(ni)) {
WARN_ON(ic->ic_nonqtn_sta == 0);
WARN_ON(vap->iv_non_qtn_sta_assoc == 0);
if (ic->ic_nonqtn_sta > 0)
ic->ic_nonqtn_sta--;
if (vap->iv_non_qtn_sta_assoc > 0)
vap->iv_non_qtn_sta_assoc--;
ieee80211_set_recv_ctrlpkts(vap);
IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
"%s - reduces counter ic_nonqtn_sta %u, iv_non_qtn_sta_assoc %u\n",
caller, ic->ic_nonqtn_sta, vap->iv_non_qtn_sta_assoc);
}
}
static void
ieee80211_reset_bw(struct ieee80211vap *vap, struct ieee80211com *ic, int channel, int delay_ch_switch)
{
int bw;
int max_channel_bw;
int cur_bw = ieee80211_get_cap_bw(ic);
if (vap->iv_opmode != IEEE80211_M_STA) {
return;
}
max_channel_bw = ieee80211_get_max_channel_bw(ic, channel);
bw = MIN(MIN(ic->ic_max_system_bw, max_channel_bw), ic->ic_bss_bw);
if (bw >= BW_HT80 && !IS_IEEE80211_VHT_ENABLED(ic)) {
bw = BW_HT40;
}
if ((bw > BW_HT40) && !ieee80211_swfeat_is_supported(SWFEAT_ID_VHT, 1)) {
printk("BW %d is not supported on this device\n", bw);
bw = BW_HT40;
}
if ((bw >= BW_HT40) && (ic->ic_curmode == IEEE80211_MODE_11A)) {
bw = BW_HT20;
}
if ((ic->ic_curmode == IEEE80211_MODE_11B) ||
(ic->ic_curmode == IEEE80211_MODE_11G) ||
(ic->ic_curmode == IEEE80211_MODE_11NG)) {
bw = BW_HT20;
}
if (ic->ic_curmode == IEEE80211_MODE_11NG_HT40PM) {
bw = BW_HT40;
}
if (bw == cur_bw)
return;
ieee80211_change_bw(vap, bw, delay_ch_switch);
}
/*
* Restore bandwidth to initial state.
*/
void
ieee80211_restore_bw(struct ieee80211vap *vap, struct ieee80211com *ic)
{
int bw = ic->ic_max_system_bw;
int cur_bw = ieee80211_get_cap_bw(ic);
if (vap->iv_opmode != IEEE80211_M_STA)
return;
if ((bw >= BW_HT80) &&
(!IS_IEEE80211_VHT_ENABLED(ic) ||
!ieee80211_swfeat_is_supported(SWFEAT_ID_VHT, 1)))
bw = BW_HT40;
if ((bw >= BW_HT40) &&
((ic->ic_curmode == IEEE80211_MODE_11A) ||
(ic->ic_curmode == IEEE80211_MODE_11B) ||
(ic->ic_curmode == IEEE80211_MODE_11G) ||
(ic->ic_curmode == IEEE80211_MODE_11NG) ||
(ic->ic_curmode == IEEE80211_MODE_11NA)))
bw = BW_HT20;
ic->ic_bss_bw = bw;
if (bw == cur_bw)
return;
ieee80211_change_bw(vap, bw, 0);
}
/*
* Set phymode, bw and vht params specific to band
*/
void
configure_phy_mode(struct ieee80211vap *vap, struct ieee80211_node *selbs)
{
struct ieee80211com *ic = selbs->ni_ic;
int aggr = 1;
if (selbs->ni_chan->ic_ieee > QTN_2G_LAST_OPERATING_CHAN) {
if (vap->iv_5ghz_prof.phy_mode == IEEE80211_MODE_11NA) {
ic->ic_des_mode = ic->ic_phymode = IEEE80211_MODE_11NA;
vap->iv_5ghz_prof.bw = BW_HT20;
vap->iv_5ghz_prof.vht = 0;
} else if (vap->iv_5ghz_prof.phy_mode == IEEE80211_MODE_11NA_HT40PM) {
ic->ic_des_mode = ic->ic_phymode = IEEE80211_MODE_11NA_HT40PM;
vap->iv_5ghz_prof.bw = BW_HT40;
vap->iv_5ghz_prof.vht = 0;
} else if (vap->iv_5ghz_prof.phy_mode == IEEE80211_MODE_11AC_VHT20PM) {
ic->ic_des_mode = ic->ic_phymode = IEEE80211_MODE_11AC_VHT20PM;
vap->iv_5ghz_prof.bw = BW_HT20;
vap->iv_5ghz_prof.vht = 1;
} else if (vap->iv_5ghz_prof.phy_mode == IEEE80211_MODE_11AC_VHT40PM) {
ic->ic_des_mode = ic->ic_phymode = IEEE80211_MODE_11AC_VHT40PM;
vap->iv_5ghz_prof.bw = BW_HT40;
vap->iv_5ghz_prof.vht = 1;
} else {
ic->ic_des_mode = ic->ic_phymode = IEEE80211_MODE_11AC_VHT80PM;
vap->iv_5ghz_prof.bw = BW_HT80;
vap->iv_5ghz_prof.vht = 1;
}
ieee80211_setmode(ic, ic->ic_des_mode);
ic->ic_csw_reason = IEEE80211_CSW_REASON_CONFIG;
ieee80211_change_bw(vap, vap->iv_5ghz_prof.bw, 0);
ieee80211_param_to_qdrv(vap, IEEE80211_PARAM_MODE, vap->iv_5ghz_prof.vht, NULL, 0);
} else {
if (vap->iv_2_4ghz_prof.phy_mode == IEEE80211_MODE_11B) {
ic->ic_des_mode = ic->ic_phymode = IEEE80211_MODE_11B;
vap->iv_2_4ghz_prof.bw = BW_HT20;
} else if (vap->iv_2_4ghz_prof.phy_mode == IEEE80211_MODE_11G) {
ic->ic_des_mode = ic->ic_phymode = IEEE80211_MODE_11G;
vap->iv_2_4ghz_prof.bw = BW_HT20;
} else if (vap->iv_2_4ghz_prof.phy_mode == IEEE80211_MODE_11NG) {
ic->ic_des_mode = ic->ic_phymode = IEEE80211_MODE_11NG;
vap->iv_2_4ghz_prof.bw = BW_HT20;
} else {
ic->ic_des_mode = ic->ic_phymode = IEEE80211_MODE_11NG_HT40PM;
vap->iv_2_4ghz_prof.bw = BW_HT40;
}
ieee80211_setmode(ic, ic->ic_des_mode);
ieee80211_start_obss_scan_timer(vap);
ieee80211_change_bw(vap, vap->iv_2_4ghz_prof.bw, 0);
ieee80211_param_to_qdrv(vap, IEEE80211_PARAM_PHY_MODE, ic->ic_phymode, NULL, 0);
}
ieee80211_param_to_qdrv(vap, IEEE80211_PARAM_TX_AMSDU, aggr, NULL, 0);
ieee80211_param_to_qdrv(vap, IEEE80211_PARAM_AGGREGATION, aggr, NULL, 0);
}
static void ieee80211_repeater_csa_finish(unsigned long arg)
{
struct ieee80211com *ic = (struct ieee80211com *)arg;
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
KASSERT((vap->iv_opmode == IEEE80211_M_STA
&& (ic->ic_flags_ext & IEEE80211_FEXT_REPEATER)), ("Should only be called for repeater STA interface"));
ieee80211_finish_csa(arg);
/* finish the undone job left by ieee80211_sta_join1 */
IEEE80211_SCHEDULE_TQUEUE(&vap->iv_stajoin1tq);
}
/*
* Join the specified IBSS/BSS network. The node is assumed to
* be passed in with a reference already held for use in assigning
* to iv_bss.
*/
void
ieee80211_sta_join1(struct ieee80211vap *vap, struct ieee80211_node *selbs, int reauth)
{
struct ieee80211com *ic = selbs->ni_ic;
struct ieee80211_node *obss = vap->iv_bss;
struct ieee80211_node_table *nt = &ic->ic_sta;
struct ieee80211com *ic_sta = vap->iv_ic;
int canreassoc;
int cur_band, new_band;
u_int8_t bridge_mode_changed;
int start_csa = (vap->iv_opmode == IEEE80211_M_STA
&& (ic->ic_flags_ext & IEEE80211_FEXT_REPEATER));
cur_band = new_band = 0;
if (vap->iv_opmode == IEEE80211_M_IBSS) {
/*
* Delete unusable rates; we've already checked
* that the negotiated rate set is acceptable.
*/
ieee80211_fix_rate(selbs, IEEE80211_F_DODEL);
ieee80211_fix_ht_rate(selbs, IEEE80211_F_DODEL);
}
/* Set bridge mode according to AP's capabilities and local config */
bridge_mode_changed = ieee80211_bridgemode_set(vap, 0);
/*
* Check if old+new node have the same ssid in which
* case we can reassociate when operating in sta mode.
*/
canreassoc = (obss != NULL &&
vap->iv_state >= IEEE80211_S_ASSOC &&
ssid_equal(obss, selbs) &&
!bridge_mode_changed);
if ((obss != NULL) && (obss != selbs) &&
(vap->iv_state >= IEEE80211_S_ASSOC)) {
#if defined(QBMPS_ENABLE)
if ((ic->ic_flags_qtn & IEEE80211_QTN_BMPS) &&
(vap->iv_opmode == IEEE80211_M_STA)) {
/* exit power-saving */
ic->ic_pm_reason = IEEE80211_PM_LEVEL_JOIN_BSS;
ieee80211_pm_queue_work(ic);
}
#endif
IEEE80211_SEND_MGMT(obss,
IEEE80211_FC0_SUBTYPE_DISASSOC,
IEEE80211_REASON_ASSOC_LEAVE);
/*
* Ensure that the deauth/disassoc frame is sent
* before the node is deleted.
*/
ieee80211_safe_wait_ms(50, !in_interrupt());
}
vap->iv_bss = selbs;
if ((obss != NULL) && (obss != selbs)) {
if (vap->iv_opmode == IEEE80211_M_STA) {
ic->ic_new_assoc(selbs);
}
ic->ic_disassoc(obss);
IEEE80211_NODE_LOCK_IRQ(nt);
ieee80211_node_reclaim(nt, obss);
IEEE80211_NODE_UNLOCK_IRQ(nt);
}
/* Update secondary channel offset base on htop */
if (selbs->ni_chan->ic_ieee <= QTN_2G_LAST_OPERATING_CHAN)
ieee80211_update_sec_chan_offset(selbs->ni_chan, selbs->ni_htinfo.choffset);
/* check if required to update phymode and bandwidth */
if (ic->ic_rf_chipid == CHIPID_DUAL) {
if (selbs->ni_chan->ic_ieee > QTN_2G_LAST_OPERATING_CHAN)
new_band = FREQ_5_GHZ;
else
new_band = FREQ_2_4_GHZ;
if (ic_sta->ic_curchan->ic_ieee > QTN_2G_LAST_OPERATING_CHAN)
cur_band = FREQ_5_GHZ;
else
cur_band = FREQ_2_4_GHZ;
if (cur_band != new_band)
configure_phy_mode(vap, selbs);
}
ic->ic_bsschan = selbs->ni_chan;
ic->ic_curchan = selbs->ni_chan;
ic->ic_fast_reass_chan = selbs->ni_chan;
ic->ic_fast_reass_scan_cnt = 0;
IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE | IEEE80211_MSG_SCAN,
"Fast reassoc chan=%u fast=%u state=%u\n",
(ic->ic_fast_reass_chan && (ic->ic_fast_reass_chan != IEEE80211_CHAN_ANYC)) ?
ic->ic_fast_reass_chan->ic_ieee : 0,
canreassoc,
vap->iv_state);
if (start_csa) {
ieee80211_cancel_scan_no_wait(vap);
ieee80211_enter_csa(ic, ic->ic_curchan,
ieee80211_repeater_csa_finish,
IEEE80211_CSW_REASON_SCAN,
IEEE80211_DEFAULT_CHANCHANGE_TBTT_COUNT,
IEEE80211_CSA_MUST_STOP_TX,
IEEE80211_CSA_F_BEACON | IEEE80211_CSA_F_ACTION);
} else {
ic->ic_set_channel(ic);
}
if ((vap->iv_opmode == IEEE80211_M_HOSTAP) ||
(vap->iv_opmode == IEEE80211_M_STA))
ieee80211_build_countryie(ic);
/*
* Set the erp state (mostly the slot time) to deal with
* the auto-select case; this should be redundant if the
* mode is locked.
*/
if (ic->ic_curmode != IEEE80211_MODE_11B) {
ieee80211_reset_erp(ic, ic->ic_curmode);
}
if (reauth && vap->iv_opmode == IEEE80211_M_STA) {
/*
* Reset the bw before association to minimum of
* max_system_bw and max_channel_bw.
*/
ieee80211_reset_bw(vap, ic, selbs->ni_chan->ic_ieee, start_csa);
/*
* Act as if we received a DEAUTH frame in case we are
* invoked from the RUN state. This will cause us to try
* to re-authenticate if we are operating as a station.
*/
if (canreassoc) {
vap->iv_nsparams.newstate = IEEE80211_S_ASSOC;
vap->iv_nsparams.arg = 0;
} else {
vap->iv_nsparams.newstate = IEEE80211_S_AUTH;
vap->iv_nsparams.arg = IEEE80211_FC0_SUBTYPE_DEAUTH;
}
} else {
vap->iv_nsparams.newstate = IEEE80211_S_RUN;
vap->iv_nsparams.arg = -1;
}
if (!start_csa)
IEEE80211_SCHEDULE_TQUEUE(&vap->iv_stajoin1tq);
}
static void ieee80211_bringup_repeater_sta(struct ieee80211com *ic, struct ieee80211vap *ap_vap)
{
struct ieee80211vap *vap;
if (ap_vap->iv_opmode != IEEE80211_M_HOSTAP)
return;
vap = TAILQ_FIRST(&ic->ic_vaps);
if (vap->iv_state == IEEE80211_S_INIT
&& (ic->ic_flags_ext & IEEE80211_FEXT_REPEATER)) {
if ((ic->ic_flags & IEEE80211_F_SCAN)
#ifdef QTN_BG_SCAN
|| (ic->ic_flags_qtn & IEEE80211_QTN_BGSCAN)
#endif
)
IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE,
"%s:Scan in progress\n",__func__);
ieee80211_new_state(vap, IEEE80211_S_SCAN, 0);
}
}
void
ieee80211_sta_join1_tasklet(IEEE80211_TQUEUE_ARG data)
{
struct ieee80211vap *vap= (struct ieee80211vap *) data;
int rc;
rc = ieee80211_new_state(vap, vap->iv_nsparams.newstate, vap->iv_nsparams.arg);
vap->iv_nsparams.result = rc;
vap->iv_nsdone = 1;
/* Enable system xmit for DFS slave */
vap->iv_ic->ic_sta_set_xmit(true);
ieee80211_bringup_repeater_sta(vap->iv_ic, vap);
}
EXPORT_SYMBOL(ieee80211_sta_join1_tasklet);
extern int
ieee80211_get_rsn_from_ie(struct ieee80211vap *vap, u_int8_t *frm,
struct ieee80211_rsnparms *rsn_parm);
int
ieee80211_sta_join(struct ieee80211vap *vap,
const struct ieee80211_scan_entry *se)
{
struct ieee80211com *ic = vap->iv_ic;
struct ieee80211_node *bss_ni = vap->iv_bss;
struct ieee80211_node *ni;
uint8_t bss_bw;
if (!bss_ni) {
bss_ni = TAILQ_FIRST(&ic->ic_vaps)->iv_bss;
if (!bss_ni) {
IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
"%s: no bss node\n", __func__);
return 0;
}
}
ni = ieee80211_find_node(&ic->ic_sta, se->se_macaddr);
if (ni == NULL) {
ni = ieee80211_alloc_node(&ic->ic_sta, vap, se->se_macaddr, "join");
if (ni == NULL) {
IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
"%s: failed to alloc node\n", __func__);
return 0;
}
}
/* Inherit some params from BSS */
ni->ni_authmode = bss_ni->ni_authmode;
ni->ni_rsn = bss_ni->ni_rsn;
/* Expand scan state into node's format */
IEEE80211_ADDR_COPY(ni->ni_bssid, se->se_bssid);
ni->ni_esslen = se->se_ssid[1];
memcpy(ni->ni_essid, se->se_ssid + 2, ni->ni_esslen);
ni->ni_rstamp = se->se_rstamp;
ni->ni_tstamp.tsf = se->se_tstamp.tsf;
ni->ni_intval = IEEE80211_BINTVAL_SANITISE(se->se_intval);
ni->ni_capinfo = se->se_capinfo;
ni->ni_chan = se->se_chan;
ni->ni_timoff = se->se_timoff;
ni->ni_fhdwell = se->se_fhdwell;
ni->ni_fhindex = se->se_fhindex;
ni->ni_erp = se->se_erp;
ni->ni_rssi = se->se_rssi;
ni->ni_node_type = IEEE80211_NODE_TYPE_VAP;
ni->tdls_status = IEEE80211_TDLS_NODE_STATUS_NONE;
if (se->se_htcap_ie != NULL) {
ieee80211_parse_htcap(ni, se->se_htcap_ie);
ni->ni_flags |= IEEE80211_NODE_HT;
} else {
ni->ni_flags &= ~IEEE80211_NODE_HT;
}
if (se->se_htinfo_ie != NULL)
ieee80211_parse_htinfo(ni, se->se_htinfo_ie);
if (se->se_vhtcap_ie != NULL)
ieee80211_parse_vhtcap(ni, se->se_vhtcap_ie);
if (se->se_vhtop_ie != NULL)
ieee80211_parse_vhtop(ni, se->se_vhtop_ie);
if (se->se_wpa_ie != NULL)
ieee80211_saveie(&ni->ni_wpa_ie, se->se_wpa_ie);
if (se->se_rsn_ie != NULL)
ieee80211_saveie(&ni->ni_rsn_ie, se->se_rsn_ie);
if (se->se_wme_ie != NULL)
ieee80211_saveie(&ni->ni_wme_ie, se->se_wme_ie);
if (se->se_qtn_ie != NULL)
ieee80211_saveie(&ni->ni_qtn_assoc_ie, se->se_qtn_ie);
if (se->se_ath_ie != NULL)
ieee80211_saveath(ni, se->se_ath_ie);
ni->ni_ext_role = se->se_ext_role;
if (se->se_ext_bssid_ie != NULL)
ieee80211_saveie(&ni->ni_ext_bssid_ie, se->se_ext_bssid_ie);
/*
* Parse and fill the rsn_cap here only. The remaining of rsn params is gotten from bss above
*/
if(ni->ni_rsn_ie) {
struct ieee80211_rsnparms rsn_param;
u_int8_t res = 0;
memset((u_int8_t*)&rsn_param, 0, sizeof(rsn_param));
res = ieee80211_get_rsn_from_ie(vap, ni->ni_rsn_ie, &rsn_param);
if(res == 0) {
ni->ni_rsn.rsn_caps = rsn_param.rsn_caps;
if (!vap->iv_pmf) {
ni->ni_rsn.rsn_caps &= ~(RSN_CAP_MFP_REQ | RSN_CAP_MFP_CAP);
}
}
}
vap->iv_qtn_ap_cap = se->se_qtn_ie_flags;
vap->iv_is_qtn_dev = se->se_is_qtn_dev;
vap->iv_dtim_period = se->se_dtimperiod;
vap->iv_dtim_count = 0;
vap->iv_local_max_txpow = se->local_max_txpwr;
/* NB: must be after ni_chan is set up */
ieee80211_setup_rates(ni, se->se_rates, se->se_xrates,
IEEE80211_F_DOSORT | IEEE80211_F_DONEGO | IEEE80211_F_DODEL);
if (IEEE80211_VHTOP_GET_CHANWIDTH(&ni->ni_ie_vhtop)
>= IEEE80211_VHTOP_CHAN_WIDTH_80MHZ)
bss_bw = BW_HT80;
else if (ni->ni_ie_htinfo.hi_byte1 & IEEE80211_HTINFO_B1_REC_TXCHWIDTH_40)
bss_bw = BW_HT40;
else
bss_bw = BW_HT20;
ic->ic_bss_bw = MIN(bss_bw, ic->ic_max_system_bw);
if (ic->sta_dfs_info.sta_dfs_strict_mode &&
ieee80211_is_chan_not_available(ni->ni_chan) &&
ic->ic_mark_channel_availability_status) {
ic->ic_mark_channel_availability_status(ic, ni->ni_chan,
IEEE80211_CHANNEL_STATUS_AVAILABLE);
}
ieee80211_sta_join1(vap, ni, 1);
ieee80211_free_node(ni);
return 1;
}
EXPORT_SYMBOL(ieee80211_sta_join);
static __inline void
ieee80211_clear_aid_bitmap(struct ieee80211com *ic, uint16_t aid)
{
if (IEEE80211_AID(aid) < QTN_NODE_TBL_SIZE_LHOST)
IEEE80211_AID_CLR(ic, aid);
}
static void
ieee80211_aid_remove(struct ieee80211_node *ni)
{
struct ieee80211vap *vap = ni->ni_vap;
struct ieee80211com *ic = vap->iv_ic;
if (ni->ni_associd) {
ieee80211_clear_aid_bitmap(ic, ni->ni_associd);
ic->ic_node_auth_state_change(ni, 0);
ni->ni_associd = 0;
}
}
static void
ieee80211_idx_remove(struct ieee80211_node *ni)
{
struct ieee80211vap *vap = ni->ni_vap;
struct ieee80211com *ic = vap->iv_ic;
if (ni->ni_node_idx) {
if (ic->ic_node_idx_ni[IEEE80211_NODE_IDX_UNMAP(ni->ni_node_idx)] == ni) {
ic->ic_node_idx_ni[IEEE80211_NODE_IDX_UNMAP(ni->ni_node_idx)] = NULL;
}
ic->ic_unregister_node(ni);
ni->ni_node_idx = 0;
}
}
/*
* Leave the specified IBSS/BSS network. The node is assumed to
* be passed in with a held reference.
*/
void
ieee80211_sta_leave(struct ieee80211_node *ni)
{
struct ieee80211vap *vap = ni->ni_vap;
struct ieee80211com *ic = vap->iv_ic;
ieee80211_ref_node(ni);
ieee80211_ppqueue_remove_node_leave(&vap->iv_ppqueue, ni);
if ((ic->ic_measure_info.ni == ni) &&
(ic->ic_measure_info.status == MEAS_STATUS_RUNNING)) {
ic->ic_measure_info.status = MEAS_STATUS_DISCRAD;
}
#if defined(QBMPS_ENABLE)
if (ic->ic_flags_qtn & IEEE80211_QTN_BMPS) {
/* exit power-saving */
ic->ic_pm_reason = IEEE80211_PM_LEVEL_LEAVE_BSS;
ieee80211_pm_queue_work(ic);
}
#endif
/* WDS/Repeater: Stop software beacon timer for STA */
if (vap->iv_opmode == IEEE80211_M_STA &&
vap->iv_flags_ext & IEEE80211_FEXT_SWBMISS) {
del_timer(&vap->iv_swbmiss);
}
/* Clear up the training timer */
if (vap->iv_opmode != IEEE80211_M_WDS) {
if (ni) {
int free_node = 0;
del_timer_sync(&ni->ni_training_timer);
spin_lock(&ni->ni_lock);
if (ni->ni_training_flag == NI_TRAINING_RUNNING) {
free_node = 1;
ni->ni_training_flag = NI_TRAINING_END;
}
spin_unlock(&ni->ni_lock);
if (free_node) {
printk("%s: [%pM] %s stopped\n",
vap->iv_dev->name, ni->ni_macaddr,
ic->ic_ocac.ocac_running ? "T process" : "training");
ieee80211_free_node(ni);
}
}
}
if (vap->iv_opmode == IEEE80211_M_STA)
ieee80211_param_to_qdrv(vap, IEEE80211_PARAM_PWR_ADJUST_AUTO, 0, NULL, 0);
if (vap->iv_opmode == IEEE80211_M_HOSTAP)
del_timer_sync(&ni->ni_btm_resp_wait_timer);
/*
* Make sure the node index is removed after the state change, which is below. Otherwise, fdb will not be cleared.
*/
ic->ic_node_auth_state_change(ni, 0);
/*
* Make sure the node index is removed before deleting the MuC/AuC node structure, else
* packets will be dropped.
*/
ieee80211_idx_remove(ni);
ic->ic_node_cleanup(ni);
ic->ic_disassoc(ni);
ieee80211_notify_node_leave(ni);
ieee80211_free_node(ni);
}
/*
* Node table support.
*/
static void
ieee80211_node_table_init(struct ieee80211com *ic,
struct ieee80211_node_table *nt, const char *name, int inact)
{
nt->nt_ic = ic;
IEEE80211_NODE_LOCK_INIT(nt, "");
IEEE80211_SCAN_LOCK_INIT(nt, "");
TAILQ_INIT(&nt->nt_node);
nt->nt_name = name;
nt->nt_scangen = 1;
nt->nt_inact_init = inact;
init_timer(&nt->nt_wds_aging_timer);
nt->nt_wds_aging_timer.function = ieee80211_node_wds_ageout;
nt->nt_wds_aging_timer.data = (unsigned long) nt;
mod_timer(&nt->nt_wds_aging_timer, jiffies + HZ * WDS_AGING_TIMER_VAL);
}
/*
* Reclaim any resources in a node and reset any critical
* state. Typically nodes are free'd immediately after,
* but in some cases the storage may be reused so we need
* to ensure consistent state (should probably fix that).
*
* Context: hwIRQ, softIRQ and process context
*/
static void
ieee80211_node_cleanup(struct ieee80211_node *ni)
{
struct ieee80211vap *vap = ni->ni_vap;
IEEE80211_LOCK_IRQ(ni->ni_ic);
/* NB: preserve ni_table */
if (ni->ni_flags & IEEE80211_NODE_PWR_MGT) {
if (vap->iv_opmode != IEEE80211_M_STA)
vap->iv_ps_sta--;
if (WMM_UAPSD_NODE_IS_PWR_MGT(ni)) {
ni->ni_ic->ic_uapsdmaxtriggers--;
}
ni->ni_flags &= ~IEEE80211_NODE_PWR_MGT;
IEEE80211_NOTE(vap, IEEE80211_MSG_POWER, ni,
"power save mode off, %u sta's in ps mode",
vap->iv_ps_sta);
}
ni->ni_flags &= ~IEEE80211_NODE_HT;
ieee80211_node_saveq_drain(ni);
if (vap->iv_set_tim != NULL) {
vap->iv_set_tim(ni, 0);
}
ieee80211_aid_remove(ni);
memset(&ni->ni_stats, 0, sizeof(ni->ni_stats));
if (ni->ni_challenge != NULL) {
FREE(ni->ni_challenge, M_DEVBUF);
ni->ni_challenge = NULL;
}
if (ni->ni_qtn_brmacs != NULL) {
FREE(ni->ni_qtn_brmacs, M_DEVBUF);
ni->ni_qtn_brmacs = NULL;
}
/*
* Preserve SSID, WPA, and WME ie's so the bss node is
* reusable during a re-auth/re-assoc state transition.
* If we remove these data they will not be recreated
* because they come from a probe-response or beacon frame
* which cannot be expected prior to the association-response.
* This should not be an issue when operating in other modes
* as stations leaving always go through a full state transition
* which will rebuild this state.
*
* XXX does this leave us open to inheriting old state?
*/
if (ni->ni_rxfrag != NULL) {
dev_kfree_skb_any(ni->ni_rxfrag);
ni->ni_rxfrag = NULL;
}
/*
* If there are related frames have been pushed to HW, clear the security bit in Node Cache.
* Don't delete the key here, disassoc will release the node cache later.
*/
#if 0
ieee80211_crypto_delkey(vap, &ni->ni_ucastkey, ni);
ni->ni_rxkeyoff = 0;
#endif
/* Deauthorize - remove from various linked lists. */
ieee80211_node_unauthorize(ni);
IEEE80211_UNLOCK_IRQ(ni->ni_ic);
}
static void
ieee80211_node_exit(struct ieee80211_node *ni)
{
struct ieee80211com *ic = ni->ni_ic;
ic->ic_node_count--;
ic->ic_node_cleanup(ni);
if (ni->ni_wpa_ie != NULL) {
FREE(ni->ni_wpa_ie, M_DEVBUF);
ni->ni_wpa_ie = NULL;
}
if (ni->ni_rsn_ie != NULL) {
FREE(ni->ni_rsn_ie, M_DEVBUF);
ni->ni_rsn_ie = NULL;
}
if (ni->ni_osen_ie != NULL) {
FREE(ni->ni_osen_ie, M_DEVBUF);
ni->ni_osen_ie = NULL;
}
if (ni->ni_wme_ie != NULL) {
FREE(ni->ni_wme_ie, M_DEVBUF);
ni->ni_wme_ie = NULL;
}
if (ni->ni_wsc_ie != NULL) {
FREE(ni->ni_wsc_ie, M_DEVBUF);
ni->ni_wsc_ie = NULL;
}
if (ni->ni_ath_ie != NULL) {
FREE(ni->ni_ath_ie, M_DEVBUF);
ni->ni_ath_ie = NULL;
}
if (ni->ni_qtn_assoc_ie != NULL) {
FREE(ni->ni_qtn_assoc_ie, M_DEVBUF);
ni->ni_qtn_assoc_ie = NULL;
}
if (ni->ni_qtn_pairing_ie != NULL) {
FREE(ni->ni_qtn_pairing_ie, M_DEVBUF);
ni->ni_qtn_pairing_ie = NULL;
}
if (ni->ni_qtn_brmacs != NULL) {
FREE(ni->ni_qtn_brmacs, M_DEVBUF);
ni->ni_qtn_brmacs = NULL;
}
if (ni->ni_ext_bssid_ie != NULL) {
FREE(ni->ni_ext_bssid_ie, M_DEVBUF);
ni->ni_ext_bssid_ie = NULL;
}
if (ni->ni_tx_md_ie != NULL) {
FREE(ni->ni_tx_md_ie, M_DEVBUF);
ni->ni_tx_md_ie = NULL;
}
if (ni->ni_rx_md_ie != NULL) {
FREE(ni->ni_rx_md_ie, M_DEVBUF);
ni->ni_rx_md_ie = NULL;
}
if (ni->ni_tx_ft_ie != NULL) {
FREE(ni->ni_tx_ft_ie, M_DEVBUF);
ni->ni_tx_ft_ie = NULL;
}
if (ni->ni_rx_ft_ie != NULL) {
FREE(ni->ni_rx_ft_ie, M_DEVBUF);
ni->ni_rx_ft_ie = NULL;
}
if (ni->ni_tx_rsn_ie != NULL) {
FREE(ni->ni_tx_rsn_ie, M_DEVBUF);
ni->ni_tx_rsn_ie = NULL;
}
ieee80211_scs_free_node_tdls_stats(ic, ni);
ic->ic_qdrv_node_free(ni);
IEEE80211_NODE_SAVEQ_DESTROY(ni);
FREE(ni, M_80211_NODE);
}
static u_int8_t
ieee80211_node_getrssi(const struct ieee80211_node *ni)
{
return ni->ni_rssi;
}
/*
* Configure block ack agreements for a node.
*/
static void ieee80211_tx_addba(struct ieee80211_node *ni)
{
struct ieee80211com *ic = ni->ni_ic;
struct ieee80211vap *vap = ni->ni_vap;
int tid;
if (ni->ni_associd == 0) {
ieee80211_free_node(ni);
return;
}
for (tid = 0; tid < 7; tid++) {
if (ni->ni_ba_tx[tid].state == IEEE80211_BA_REQUESTED) {
ic->ic_setparam(ni, IEEE80211_PARAM_HTBA_SEQ_CTRL,
tid << 16, 0, 0);
if (ni->ni_vap->iv_opmode == IEEE80211_M_WDS &&
tid == IEEE80211_WDS_LINK_MAINTAIN_BA_TID &&
ni->ni_qtn_assoc_ie) {
/* For Q WDS peer, use larger buffer size for TID 0 to get more throughput */
ic->ic_setparam(ni, IEEE80211_PARAM_HTBA_SIZE_CTRL,
tid << 16 | IEEE80211_DEFAULT_BA_WINSIZE_H, 0, 0);
} else {
ic->ic_setparam(ni, IEEE80211_PARAM_HTBA_SIZE_CTRL,
tid << 16 | vap->iv_max_ba_win_size, 0, 0);
}
ic->ic_setparam(ni, IEEE80211_PARAM_HTBA_TIME_CTRL,
tid << 16 | 0x0, 0, 0);
ic->ic_setparam(ni, IEEE80211_PARAM_HT_ADDBA,
tid, 0, 0);
}
}
ieee80211_free_node(ni);
}
/*
* Configure block agreements for a node, workqueue version.
* The node structure must be locked before scheduling this workqueue.
*/
static void ieee80211_tx_addba_work(struct work_struct *work)
{
struct ieee80211_node *ni =
container_of(work, struct ieee80211_node, ni_tx_addba_task);
ieee80211_tx_addba(ni);
}
/*
* Create an entry in the specified node table. The node
* is set up with the mac address, an initial reference count,
* and some basic parameters obtained from global state.
* This interface is not intended for general use, it is
* used by the routines below to create entries with a
* specific purpose.
*/
struct ieee80211_node *
ieee80211_alloc_node(struct ieee80211_node_table *nt,
struct ieee80211vap *vap, const u_int8_t *macaddr, const char *caller)
{
struct ieee80211com *ic = nt->nt_ic;
struct ieee80211_node *ni;
int hash;
int i;
ni = ic->ic_node_alloc(nt, vap, macaddr, 0);
if (ni == NULL) {
/*
* Free the expired tdls node first and then try to
* allocate new node again
*/
if (vap->iv_opmode == IEEE80211_M_STA) {
ieee80211_tdls_node_expire((unsigned long)vap);
ni = ic->ic_node_alloc(nt, vap, macaddr, 0);
}
if (ni == NULL) {
printk(KERN_WARNING "Failed to allocate node for %s\n", caller);
vap->iv_stats.is_rx_nodealloc++;
return NULL;
}
}
IEEE80211_ADDR_COPY(ni->ni_macaddr, macaddr);
hash = IEEE80211_NODE_HASH(macaddr);
ni->ni_vap = vap;
ni->ni_ic = ic;
#ifdef IEEE80211_DEBUG_REFCNT
ni->ni_refdebug_info_p = kmalloc(sizeof(*ni->ni_refdebug_info_p), GFP_ATOMIC);
if (ni->ni_refdebug_info_p)
memset(ni->ni_refdebug_info_p, 0, sizeof(*ni->ni_refdebug_info_p));
#endif
ieee80211_node_initref(ni);
ieee80211_ref_node(ni);
ni->ni_tbtt = 0;
ni->ni_dtim_tbtt = 0;
ni->ni_flags |= (IS_IEEE80211_VHT_ENABLED(ic) ? IEEE80211_NODE_VHT:IEEE80211_NODE_HT);
ni->ni_htcap = ic->ic_htcap;
ni->ni_vhtcap = ic->ic_vhtcap;
ni->ni_chan = IEEE80211_CHAN_ANYC;
ni->ni_authmode = IEEE80211_AUTH_OPEN;
ni->ni_txpower = ic->ic_txpowlimit; /* max power */
ieee80211_crypto_resetkey(vap, &ni->ni_ucastkey, IEEE80211_KEYIX_NONE);
ni->ni_inact_reload = nt->nt_inact_init;
ni->ni_inact = ni->ni_inact_reload;
ni->ni_ath_defkeyindex = IEEE80211_INVAL_DEFKEY;
ni->ni_rxkeyoff = 0;
ni->ni_recent_cca_idle = SCS_CCA_IDLE_INVALID;
INIT_WORK(&ni->ni_tx_addba_task, ieee80211_tx_addba_work);
INIT_WORK(&ni->ni_inact_work, ieee80211_timeout_station_work);
init_timer(&ni->ni_training_timer);
ni->ni_training_flag = NI_TRAINING_INIT;
ni->ni_node_type = IEEE80211_NODE_TYPE_NONE;
spin_lock_init(&ni->ni_lock);
ni->ni_training_count = 0;
ni->ni_training_start = 0;
ni->tdls_initiator = 0;
ni->last_tx_phy_rate = -1;
ni->tdls_path_sel_num = 0;
ni->tdls_last_path_sel = 0;
ni->tdls_no_send_cs_resp = 0;
ni->tdls_send_cs_req = 0;
ni->ni_chan_num = 0;
memset(ni->ni_supp_chans, 0, sizeof(ni->ni_supp_chans));
memset(&ni->ni_obss_ie, 0, sizeof(struct ieee80211_obss_scan_ie));
ni->ni_ext_role = IEEE80211_EXTENDER_ROLE_NONE;
ni->ni_ext_bssid_ie = NULL;
get_random_bytes(&ni->ni_rate_train, sizeof(ni->ni_rate_train));
init_timer(&ni->ni_btm_resp_wait_timer);
ni->ni_btm_req = 0;
ni->tdls_peer_associd = 0;
ni->tdls_status = IEEE80211_TDLS_NODE_STATUS_NONE;
IEEE80211_NODE_SAVEQ_INIT(ni, "unknown");
#if defined(CONFIG_QTN_80211K_SUPPORT)
init_waitqueue_head(&ni->ni_dotk_waitq);
#endif
init_waitqueue_head(&ni->ni_meas_info.meas_waitq);
init_waitqueue_head(&ni->ni_tpc_info.tpc_wait_info.tpc_waitq);
for (i = 0; i < WME_NUM_TID; ++i) {
ni->ni_ba_rx[i].state = IEEE80211_BA_NOT_ESTABLISHED;
seqlock_init(&ni->ni_ba_rx[i].state_lock);
ni->ni_ba_tx[i].state = IEEE80211_BA_NOT_ESTABLISHED;
seqlock_init(&ni->ni_ba_tx[i].state_lock);
}
IEEE80211_NODE_LOCK_IRQ(nt);
ni->ni_table = nt;
TAILQ_INSERT_TAIL(&nt->nt_node, ni, ni_list);
LIST_INSERT_HEAD(&nt->nt_hash[hash], ni, ni_hash);
ni->ni_rxfrag = NULL;
ni->ni_challenge = NULL;
ni->ni_implicit_ba_size = IEEE80211_DEFAULT_BA_WINSIZE;
ni->ni_tx_md_ie = NULL;
ni->ni_rx_md_ie = NULL;
ni->ni_tx_ft_ie = NULL;
ni->ni_rx_ft_ie = NULL;
ni->ni_rsn_ie = NULL;
ni->ni_tx_rsn_ie = NULL;
IEEE80211_NODE_UNLOCK_IRQ(nt);
WME_UAPSD_NODE_TRIGSEQINIT(ni);
return ni;
}
EXPORT_SYMBOL(ieee80211_alloc_node);
/* Add wds address to the node table */
int
ieee80211_add_wds_addr(struct ieee80211_node_table *nt,
struct ieee80211_node *ni, const u_int8_t *macaddr, u_int8_t wds_static)
{
int hash;
struct ieee80211_wds_addr *wds;
MALLOC(wds, struct ieee80211_wds_addr *, sizeof(struct ieee80211_wds_addr),
M_80211_WDS, M_NOWAIT | M_ZERO);
if (wds == NULL) {
/* XXX msg */
return 1;
}
if (wds_static)
wds->wds_agingcount = WDS_AGING_STATIC;
else
wds->wds_agingcount = WDS_AGING_COUNT;
hash = IEEE80211_NODE_HASH(macaddr);
IEEE80211_ADDR_COPY(wds->wds_macaddr, macaddr);
wds->wds_ni = ni;
IEEE80211_NODE_LOCK_IRQ(nt);
LIST_INSERT_HEAD(&nt->nt_wds_hash[hash], wds, wds_hash);
IEEE80211_NODE_UNLOCK_IRQ(nt);
return 0;
}
EXPORT_SYMBOL(ieee80211_add_wds_addr);
/* remove wds address from the wds hash table */
void
ieee80211_remove_wds_addr(struct ieee80211_node_table *nt, const u_int8_t *macaddr)
{
int hash;
struct ieee80211_wds_addr *wds;
hash = IEEE80211_NODE_HASH(macaddr);
IEEE80211_NODE_LOCK_IRQ(nt);
LIST_FOREACH(wds, &nt->nt_wds_hash[hash], wds_hash) {
if (IEEE80211_ADDR_EQ(wds->wds_macaddr, macaddr)) {
LIST_REMOVE(wds, wds_hash);
FREE(wds, M_80211_WDS);
break;
}
}
IEEE80211_NODE_UNLOCK_IRQ(nt);
}
EXPORT_SYMBOL(ieee80211_remove_wds_addr);
/* Remove node references from wds table */
void
ieee80211_del_wds_node(struct ieee80211_node_table *nt, struct ieee80211_node *ni)
{
int hash;
struct ieee80211_wds_addr *wds;
IEEE80211_NODE_LOCK_IRQ(nt);
for (hash = 0; hash < IEEE80211_NODE_HASHSIZE; hash++) {
LIST_FOREACH(wds, &nt->nt_wds_hash[hash], wds_hash) {
if (wds->wds_ni == ni) {
LIST_REMOVE(wds, wds_hash);
FREE(wds, M_80211_WDS);
}
}
}
IEEE80211_NODE_UNLOCK_IRQ(nt);
}
EXPORT_SYMBOL(ieee80211_del_wds_node);
static void
ieee80211_node_wds_ageout(unsigned long data)
{
struct ieee80211_node_table *nt = (struct ieee80211_node_table *)data;
int hash;
struct ieee80211_wds_addr *wds;
IEEE80211_NODE_LOCK_IRQ(nt);
for (hash = 0; hash < IEEE80211_NODE_HASHSIZE; hash++) {
LIST_FOREACH(wds, &nt->nt_wds_hash[hash], wds_hash) {
if (wds->wds_agingcount != WDS_AGING_STATIC) {
if (!wds->wds_agingcount) {
LIST_REMOVE(wds, wds_hash);
FREE(wds, M_80211_WDS);
} else
wds->wds_agingcount--;
}
}
}
IEEE80211_NODE_UNLOCK_IRQ(nt);
mod_timer(&nt->nt_wds_aging_timer, jiffies + HZ * WDS_AGING_TIMER_VAL);
}
/*
* Craft a temporary node suitable for sending a management frame
* to the specified station. We craft only as much state as we
* need to do the work since the node will be immediately reclaimed
* once the send completes.
*/
struct ieee80211_node *
_ieee80211_tmp_node(struct ieee80211vap *vap, const u_int8_t *macaddr,
const u_int8_t *bssid)
{
struct ieee80211com *ic = vap->iv_ic;
struct ieee80211_node *ni;
struct ieee80211_node *bss_ni = vap->iv_bss;
if (!bss_ni) {
bss_ni = TAILQ_FIRST(&ic->ic_vaps)->iv_bss;
if (!bss_ni)
return NULL;
}
ni = ic->ic_node_alloc(&ic->ic_sta, vap, macaddr, 1);
if (ni == NULL) {
vap->iv_stats.is_rx_nodealloc++;
return NULL;
}
#ifdef IEEE80211_DEBUG_REFCNT
ni->ni_refdebug_info_p = NULL;
#endif
IEEE80211_ADDR_COPY(ni->ni_macaddr, macaddr);
IEEE80211_ADDR_COPY(ni->ni_bssid, bssid);
ni->ni_txpower = bss_ni->ni_txpower;
ni->ni_vap = vap;
ni->ni_node_idx = vap->iv_vapnode_idx;
ieee80211_node_initref(ni);
/* NB: required by ieee80211_fix_rate */
if (vap->iv_opmode == IEEE80211_M_STA) {
ni->ni_rates = ic->ic_sup_rates[ic->ic_curmode];
} else {
ieee80211_node_set_chan(ic, ni);
}
ieee80211_crypto_resetkey(vap, &ni->ni_ucastkey,
IEEE80211_KEYIX_NONE);
/* XXX optimize away */
IEEE80211_NODE_SAVEQ_INIT(ni, "unknown");
ni->ni_table = NULL;
ni->ni_ic = ic;
ni->ni_rxfrag = NULL;
ni->ni_challenge = NULL;
return ni;
}
EXPORT_SYMBOL(_ieee80211_tmp_node);
struct ieee80211_node *
ieee80211_tmp_node(struct ieee80211vap *vap, const u_int8_t *macaddr)
{
return _ieee80211_tmp_node(vap, macaddr, vap->iv_bss->ni_bssid);
}
EXPORT_SYMBOL(ieee80211_tmp_node);
/*
* Add the specified station to the station table.
* The node is locked and must be freed by the caller.
*/
struct ieee80211_node *
ieee80211_dup_bss(struct ieee80211vap *vap, const u_int8_t *macaddr)
{
struct ieee80211com *ic = vap->iv_ic;
struct ieee80211_node *ni;
if (NULL == vap->iv_bss)
return NULL;
ni = ieee80211_alloc_node(&ic->ic_sta, vap, macaddr, "bss dup");
if (ni != NULL) {
/*
* Inherit from iv_bss.
*/
ni->ni_authmode = vap->iv_bss->ni_authmode;
ni->ni_txpower = vap->iv_bss->ni_txpower;
ni->ni_vlan = vap->iv_bss->ni_vlan; /* XXX?? */
IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_bss->ni_bssid);
ieee80211_node_set_chan(ic, ni);
ni->ni_rsn = vap->iv_bss->ni_rsn;
ni->ni_rxfrag = NULL;
ni->ni_associd = vap->iv_bss->ni_associd;
ni->ni_node_idx = vap->iv_bss->ni_node_idx;
}
return ni;
}
static struct ieee80211_node *
_ieee80211_find_wds_node(struct ieee80211_node_table *nt, const u_int8_t *macaddr)
{
struct ieee80211_node *ni;
struct ieee80211_wds_addr *wds;
int hash;
IEEE80211_NODE_LOCK_ASSERT(nt);
hash = IEEE80211_NODE_HASH(macaddr);
LIST_FOREACH(wds, &nt->nt_wds_hash[hash], wds_hash) {
if (IEEE80211_ADDR_EQ(wds->wds_macaddr, macaddr)) {
ni = wds->wds_ni;
if (wds->wds_agingcount != WDS_AGING_STATIC)
wds->wds_agingcount = WDS_AGING_COUNT; /* reset the aging count */
ieee80211_ref_node(ni);
return ni;
}
}
return NULL;
}
static struct ieee80211_node *
#ifdef IEEE80211_DEBUG_REFCNT
_ieee80211_find_node_debug(struct ieee80211_node_table *nt, const u_int8_t *macaddr,
const char *filename,
int line)
#else
_ieee80211_find_node(struct ieee80211_node_table *nt, const u_int8_t *macaddr)
#endif
{
struct ieee80211_node *ni;
int hash;
struct ieee80211_wds_addr *wds;
IEEE80211_NODE_LOCK_ASSERT(nt);
hash = IEEE80211_NODE_HASH(macaddr);
LIST_FOREACH(ni, &nt->nt_hash[hash], ni_hash) {
if (IEEE80211_ADDR_EQ(ni->ni_macaddr, macaddr)) {
ieee80211_ref_node_debug(ni, filename, line);
return ni;
}
}
/* Now, we look for the desired mac address in the 4 address nodes */
LIST_FOREACH(wds, &nt->nt_wds_hash[hash], wds_hash) {
if (IEEE80211_ADDR_EQ(wds->wds_macaddr, macaddr)) {
ni = wds->wds_ni;
ieee80211_ref_node_debug(ni, filename, line);
return ni;
}
}
return NULL;
}
#ifdef IEEE80211_DEBUG_REFCNT
#define _ieee80211_find_node(nt, mac) \
_ieee80211_find_node_debug(nt, mac, filename, line)
#endif
struct ieee80211_node *
ieee80211_find_wds_node(struct ieee80211_node_table *nt, const u_int8_t *macaddr)
{
struct ieee80211_node *ni;
IEEE80211_NODE_LOCK_IRQ(nt);
ni = _ieee80211_find_wds_node(nt, macaddr);
IEEE80211_NODE_UNLOCK_IRQ(nt);
return ni;
}
EXPORT_SYMBOL(ieee80211_find_wds_node);
struct ieee80211_node * __sram_text
#ifdef IEEE80211_DEBUG_REFCNT
ieee80211_find_node_debug(struct ieee80211_node_table *nt, const u_int8_t *macaddr,
const char *filename, int line)
#else
ieee80211_find_node(struct ieee80211_node_table *nt, const u_int8_t *macaddr)
#endif
{
struct ieee80211_node *ni;
IEEE80211_NODE_LOCK_IRQ(nt);
ni = _ieee80211_find_node(nt, macaddr);
IEEE80211_NODE_UNLOCK_IRQ(nt);
return ni;
}
#ifdef IEEE80211_DEBUG_REFCNT
EXPORT_SYMBOL(ieee80211_find_node_debug);
#else
EXPORT_SYMBOL(ieee80211_find_node);
#endif
#ifdef IEEE80211_DEBUG_REFCNT
#define ieee80211_find_node_by_ip_addr \
ieee80211_find_node_by_ip_addr_debug
#endif
struct ieee80211_node * __sram_text
#ifdef IEEE80211_DEBUG_REFCNT
ieee80211_find_node_by_ip_addr_debug(struct ieee80211_node_table *nt, uint32_t ip_addr,
const char *filename,
int line)
#else
ieee80211_find_node_by_ip_addr(struct ieee80211vap *vap, uint32_t ip_addr)
#endif
{
struct ieee80211_node_table *nt = &vap->iv_ic->ic_sta;
struct ieee80211_node *ni = NULL;
IEEE80211_NODE_LOCK(nt);
TAILQ_FOREACH(ni, &nt->nt_node, ni_list) {
if (ni->ni_vap->iv_dev != vap->iv_dev) {
continue;
}
if (ni->ni_ip_addr && (ip_addr == ni->ni_ip_addr)) {
ieee80211_ref_node_debug(ni, filename, line);
break;
}
}
IEEE80211_NODE_UNLOCK(nt);
return ni;
}
#ifdef IEEE80211_DEBUG_REFCNT
EXPORT_SYMBOL(ieee80211_find_node_by_ip_addr_debug);
#else
EXPORT_SYMBOL(ieee80211_find_node_by_ip_addr);
#endif
#ifdef CONFIG_IPV6
#ifdef IEEE80211_DEBUG_REFCNT
#define ieee80211_find_node_by_ipv6_addr \
ieee80211_find_node_by_ipv6_addr_debug
#endif
struct ieee80211_node *
#ifdef IEEE80211_DEBUG_REFCNT
ieee80211_find_node_by_ipv6_addr_debug(struct ieee80211_node_table *nt, struct in6_addr *ipv6_addr,
const char *filename,
int line)
#else
ieee80211_find_node_by_ipv6_addr(struct ieee80211vap *vap, struct in6_addr *ipv6_addr)
#endif
{
struct ieee80211_node_table *nt = &vap->iv_ic->ic_sta;
struct ieee80211_node *ni = NULL;
IEEE80211_NODE_LOCK(nt);
TAILQ_FOREACH(ni, &nt->nt_node, ni_list) {
if (ni->ni_vap->iv_dev != vap->iv_dev) {
continue;
}
if (!memcmp(ni->ipv6_llocal.s6_addr, ipv6_addr, sizeof(struct in6_addr))) {
ieee80211_ref_node_debug(ni, filename, line);
break;
}
}
IEEE80211_NODE_UNLOCK(nt);
return ni;
}
#ifdef IEEE80211_DEBUG_REFCNT
EXPORT_SYMBOL(ieee80211_find_node_by_ipv6_addr_debug);
#else
EXPORT_SYMBOL(ieee80211_find_node_by_ipv6_addr);
#endif
#endif
/**
* Look up the AID by MAC address.
* refcnt is not incremented.
*/
u_int16_t /*__sram_text*/
ieee80211_find_aid_by_mac_addr(struct ieee80211_node_table *nt, const u_int8_t *macaddr)
{
struct ieee80211_node *ni;
int hash;
u_int16_t aid = 0;
IEEE80211_NODE_LOCK_IRQ(nt);
IEEE80211_NODE_LOCK_ASSERT(nt);
hash = IEEE80211_NODE_HASH(macaddr);
LIST_FOREACH(ni, &nt->nt_hash[hash], ni_hash) {
if (IEEE80211_ADDR_EQ(ni->ni_macaddr, macaddr)) {
aid = IEEE80211_AID(ni->ni_associd);
break;
}
}
IEEE80211_NODE_UNLOCK_IRQ(nt);
return aid;
}
EXPORT_SYMBOL(ieee80211_find_aid_by_mac_addr);
struct ieee80211_node * __sram_text
#ifdef IEEE80211_DEBUG_REFCNT
ieee80211_find_node_by_node_idx_debug(struct ieee80211vap *vap, uint16_t node_idx,
const char *filename,
int line)
#else
ieee80211_find_node_by_node_idx(struct ieee80211vap *vap, uint16_t node_idx)
#endif
{
struct ieee80211_node_table *nt = &vap->iv_ic->ic_sta;
struct ieee80211_node *ni;
IEEE80211_NODE_LOCK_IRQ(nt);
ni = vap->iv_ic->ic_node_idx_ni[IEEE80211_NODE_IDX_UNMAP(node_idx)];
if (ni) {
ieee80211_ref_node_debug(ni, filename, line);
}
IEEE80211_NODE_UNLOCK_IRQ(nt);
return ni;
}
#ifdef IEEE80211_DEBUG_REFCNT
EXPORT_SYMBOL(ieee80211_find_node_by_node_idx_debug);
#else
EXPORT_SYMBOL(ieee80211_find_node_by_node_idx);
#endif
struct ieee80211_node * __sram_text
#ifdef IEEE80211_DEBUG_REFCNT
ieee80211_find_node_by_idx_debug(struct ieee80211com *ic,
struct ieee80211vap *vap,
uint16_t node_idx,
const char *filename,
int line)
#else
ieee80211_find_node_by_idx(struct ieee80211com *ic, struct ieee80211vap *vap, uint16_t node_idx)
#endif
{
struct ieee80211_node_table *nt = &ic->ic_sta;
struct ieee80211_node *ni = NULL;
if (IEEE80211_NODE_IDX_UNMAP(node_idx) < QTN_NCIDX_MAX) {
IEEE80211_NODE_LOCK_IRQ(nt);
ni = ic->ic_node_idx_ni[IEEE80211_NODE_IDX_UNMAP(node_idx)];
if (ni) {
if (!vap || (ni->ni_vap == vap)) {
ieee80211_ref_node_debug(ni, filename, line);
} else {
ni = NULL;
}
}
IEEE80211_NODE_UNLOCK_IRQ(nt);
}
return ni;
}
#ifdef IEEE80211_DEBUG_REFCNT
EXPORT_SYMBOL(ieee80211_find_node_by_idx_debug);
#else
EXPORT_SYMBOL(ieee80211_find_node_by_idx);
#endif
/*
* Fake up a node; this handles node discovery in adhoc mode.
* Note that for the driver's benefit we treat this like an association so the driver has an
* opportunity to set up its private state.
* The node is locked and must be freed by the caller.
*/
struct ieee80211_node *
ieee80211_fakeup_adhoc_node(struct ieee80211vap *vap, const u_int8_t *macaddr)
{
struct ieee80211_node *ni;
if (NULL == vap->iv_bss)
return NULL;
ni = ieee80211_dup_bss(vap, macaddr);
if (ni != NULL) {
/* XXX no rate negotiation; just dup */
ni->ni_rates = vap->iv_bss->ni_rates;
if (vap->iv_ic->ic_newassoc != NULL)
vap->iv_ic->ic_newassoc(ni, 1);
/* XXX not right for 802.1x/WPA */
ieee80211_node_authorize(ni);
}
return ni;
}
/*
* Do node discovery in adhoc mode on receipt of a beacon or probe response frame.
* Note that for the driver's benefit we treat this like an association so the driver has an
* opportunity to set up its private state.
* The node is locked and must be freed by the caller.
*/
struct ieee80211_node *
ieee80211_add_neighbor(struct ieee80211vap *vap, const struct ieee80211_frame *wh,
const struct ieee80211_scanparams *sp)
{
struct ieee80211com *ic = vap->iv_ic;
struct ieee80211_node *ni;
ni = ieee80211_dup_bss(vap, wh->i_addr2); /* XXX alloc_node? */
/* TODO: not really putting itself in a table */
if (ni != NULL) {
ni->ni_esslen = sp->ssid[1];
memcpy(ni->ni_essid, sp->ssid + 2, sp->ssid[1]);
IEEE80211_ADDR_COPY(ni->ni_bssid, wh->i_addr3);
memcpy(ni->ni_tstamp.data, sp->tstamp, sizeof(ni->ni_tstamp));
ni->ni_intval = IEEE80211_BINTVAL_SANITISE(sp->bintval);
ni->ni_capinfo = sp->capinfo;
ni->ni_chan = ic->ic_curchan;
ni->ni_fhdwell = sp->fhdwell;
ni->ni_fhindex = sp->fhindex;
ni->ni_erp = sp->erp;
ni->ni_timoff = sp->timoff;
if (sp->wme != NULL)
ieee80211_saveie(&ni->ni_wme_ie, sp->wme);
if (sp->wpa != NULL)
ieee80211_saveie(&ni->ni_wpa_ie, sp->wpa);
if (sp->rsn != NULL)
ieee80211_saveie(&ni->ni_rsn_ie, sp->rsn);
if (sp->ath != NULL)
ieee80211_saveath(ni, sp->ath);
/* NB: must be after ni_chan is set up */
ieee80211_setup_rates(ni, sp->rates, sp->xrates, IEEE80211_F_DOSORT);
if (ic->ic_newassoc != NULL)
ic->ic_newassoc(ni, 1);
/* XXX not right for 802.1x/WPA */
ieee80211_node_authorize(ni);
if (vap->iv_opmode == IEEE80211_M_AHDEMO) {
/*
* Blindly propagate capabilities based on the
* local configuration. In particular this permits
* us to use QoS to disable ACK's and to use short
* preamble on 2.4G channels.
*/
if (vap->iv_flags & IEEE80211_F_WME)
ni->ni_flags |= IEEE80211_NODE_QOS;
if (vap->iv_flags & IEEE80211_F_SHPREAMBLE)
ni->ni_capinfo |= IEEE80211_CAPINFO_SHORT_PREAMBLE;
}
}
return ni;
}
/*
* Locate the node for sender, track state, and then pass the
* (referenced) node up to the 802.11 layer for its use. We
* return NULL when the sender is unknown; the driver is required
* locate the appropriate virtual ap in that case; possibly
* sending it to all (using ieee80211_input_all).
*/
struct ieee80211_node * __sram_text
#ifdef IEEE80211_DEBUG_REFCNT
ieee80211_find_rxnode_debug(struct ieee80211com *ic,
const struct ieee80211_frame_min *wh,
const char *filename,
int line)
#else
ieee80211_find_rxnode(struct ieee80211com *ic, const struct ieee80211_frame_min *wh)
#endif
{
#define IS_CTL(wh) \
((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_CTL)
#define IS_PSPOLL(wh) \
((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == IEEE80211_FC0_SUBTYPE_PS_POLL)
struct ieee80211_node_table *nt;
struct ieee80211_node *ni;
/* XXX check ic_bss first in station mode */
/* XXX 4-address frames? */
nt = &ic->ic_sta;
IEEE80211_NODE_LOCK_IRQ(nt);
if (IS_CTL(wh) && !IS_PSPOLL(wh) /*&& !IS_RTS(ah)*/)
ni = _ieee80211_find_node(nt, wh->i_addr1);
else
ni = _ieee80211_find_node(nt, wh->i_addr2);
IEEE80211_NODE_UNLOCK_IRQ(nt);
return ni;
#undef IS_PSPOLL
#undef IS_CTL
}
#ifdef IEEE80211_DEBUG_REFCNT
EXPORT_SYMBOL(ieee80211_find_rxnode_debug);
#else
EXPORT_SYMBOL(ieee80211_find_rxnode);
#endif
/*
* Return a reference to the appropriate node for sending
* a data frame. This handles node discovery in adhoc networks.
*/
struct ieee80211_node *
#ifdef IEEE80211_DEBUG_REFCNT
ieee80211_find_txnode_debug(struct ieee80211vap *vap,
const u_int8_t *mac,
const char *filename,
int line)
#else
ieee80211_find_txnode(struct ieee80211vap *vap, const u_int8_t *mac)
#endif
{
struct ieee80211_node_table *nt;
struct ieee80211_node *ni;
/*
* The destination address should be in the node table
* unless we are operating in station mode or this is a
* multicast/broadcast frame.
*/
if (vap->iv_opmode == IEEE80211_M_STA || IEEE80211_IS_MULTICAST(mac)) {
if (vap->iv_bss)
ieee80211_ref_node_debug(vap->iv_bss, filename, line);
return vap->iv_bss;
}
/* XXX can't hold lock across dup_bss due to recursive locking */
nt = &vap->iv_ic->ic_sta;
IEEE80211_NODE_LOCK_IRQ(nt);
ni = _ieee80211_find_node(nt, mac);
IEEE80211_NODE_UNLOCK_IRQ(nt);
if (ni == NULL) {
if (vap->iv_opmode == IEEE80211_M_IBSS ||
vap->iv_opmode == IEEE80211_M_AHDEMO) {
ni = ieee80211_fakeup_adhoc_node(vap, mac);
} else {
// IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_OUTPUT, mac,
// "no node, discard frame (%s)", __func__);
// vap->iv_stats.is_tx_nonode++;
}
}
return ni;
}
#ifdef IEEE80211_DEBUG_REFCNT
EXPORT_SYMBOL(ieee80211_find_txnode_debug);
#else
EXPORT_SYMBOL(ieee80211_find_txnode);
#endif
void
ieee80211_idx_add(struct ieee80211_node *ni, uint16_t new_idx)
{
struct ieee80211vap *vap = ni->ni_vap;
struct ieee80211com *ic = vap->iv_ic;
if (new_idx == IEEE80211_NODE_IDX_UNMAP(ni->ni_node_idx)) {
return;
}
IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC, ni,
"aid=%u change idx from %u to %u\n",
IEEE80211_NODE_AID(ni), IEEE80211_NODE_IDX_UNMAP(ni->ni_node_idx), new_idx);
ieee80211_idx_remove(ni);
if ((new_idx == 0) || (new_idx >= QTN_NCIDX_MAX)) {
printk("%s: [%pM] invalid idx %u\n", __func__, ni->ni_macaddr, new_idx);
return;
}
ni->ni_node_idx = IEEE80211_NODE_IDX_MAP(new_idx);
ic->ic_register_node(ni);
ic->ic_node_idx_ni[new_idx] = ni;
if (vap->iv_opmode == IEEE80211_M_WDS) {
vap->iv_vapnode_idx = ni->ni_node_idx;
}
}
EXPORT_SYMBOL(ieee80211_idx_add);
/* Caller must lock the IEEE80211_NODE_LOCK
*
* Context: hwIRQ, softIRQ and process context
*/
static void __sram_text
_ieee80211_free_node(struct ieee80211_node *ni)
{
struct ieee80211vap *vap = ni->ni_vap;
#ifdef IEEE80211_DEBUG_REFCNT
if (ni->ni_refdebug_info_p) {
ieee80211_node_show_refdebug_info(ni);
kfree(ni->ni_refdebug_info_p);
ni->ni_refdebug_info_p = NULL;
} else if (ni->ni_table != NULL) {
printk("%s:%d: freeing node %p\n", __func__, __LINE__, ni);
}
#endif
_ieee80211_remove_node(ni);
vap->iv_ic->ic_node_free(ni);
}
void __sram_text
#ifdef IEEE80211_DEBUG_REFCNT
ieee80211_free_node_debug(struct ieee80211_node *ni, const char *filename, int line)
#else
ieee80211_free_node(struct ieee80211_node *ni)
#endif
{
struct ieee80211_node_table *nt = ni->ni_table;
struct ieee80211com *ic = ni->ni_ic;
/*
* XXX: may need to lock out the following race. we dectestref
* and determine it's time to free the node. between the if()
* and lock, we take an rx intr to receive a frame from this
* node. the rx path (tasklet or intr) bumps this node's
* refcnt and xmits a response frame. eventually that response
* will get reaped, and the reaping code will attempt to use
* the node. the code below will delete the node prior
* to the reap and we could get a crash.
*
* as a stopgap before delving deeper, lock intrs to
* prevent this case.
*/
IEEE80211_LOCK_IRQ(ic);
if (ieee80211_node_dectestref(ni)) {
ieee80211_node_dbgref(ni, filename, line, IEEE80211_NODEREF_DECR);
/*
* Beware; if the node is marked gone then it's already
* been removed from the table and we cannot assume the
* table still exists. Regardless, there's no need to lock
* the table.
*/
if (ni->ni_table != NULL) {
IEEE80211_NODE_LOCK(nt);
_ieee80211_free_node(ni);
IEEE80211_NODE_UNLOCK(nt);
} else
_ieee80211_free_node(ni);
} else {
ieee80211_node_dbgref(ni, filename, line, IEEE80211_NODEREF_DECR);
}
IEEE80211_UNLOCK_IRQ(ic);
}
#ifdef IEEE80211_DEBUG_REFCNT
EXPORT_SYMBOL(ieee80211_free_node_debug);
#else
EXPORT_SYMBOL(ieee80211_free_node);
#endif
void
ieee80211_sta_assocs_inc(struct ieee80211vap *vap, const char *caller)
{
struct ieee80211com *ic = vap->iv_ic;
ic->ic_sta_assoc++;
vap->iv_sta_assoc++;
ic->ic_ssid_grp[vap->iv_ssid_group].assocs++;
IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
"%s - increases counter ic_sta_assoc %u, iv_sta_assoc %u\n",
caller, ic->ic_sta_assoc, vap->iv_sta_assoc);
}
void
ieee80211_sta_assocs_dec(struct ieee80211vap *vap, const char *caller)
{
struct ieee80211com *ic = vap->iv_ic;
WARN_ON(ic->ic_sta_assoc == 0);
WARN_ON(vap->iv_sta_assoc == 0);
WARN_ON(ic->ic_ssid_grp[vap->iv_ssid_group].assocs == 0);
if (ic->ic_sta_assoc > 0)
ic->ic_sta_assoc--;
if (vap->iv_sta_assoc > 0)
vap->iv_sta_assoc--;
if (ic->ic_ssid_grp[vap->iv_ssid_group].assocs > 0)
ic->ic_ssid_grp[vap->iv_ssid_group].assocs--;
IEEE80211_DPRINTF(vap, IEEE80211_MSG_NODE,
"%s - reduces counter ic_sta_assoc %u, iv_sta_assoc %u\n",
caller, ic->ic_sta_assoc, vap->iv_sta_assoc);
}
static void
ieee80211_node_table_reset(struct ieee80211com *ic, struct ieee80211_node_table *nt,
struct ieee80211vap *match)
{
struct ieee80211_node *ni, *next;
IEEE80211_NODE_LOCK_IRQ(nt);
TAILQ_FOREACH_SAFE(ni, &nt->nt_node, ni_list, next) {
if (match != NULL && ni->ni_vap != match)
continue;
if (ni->ni_associd != 0) {
struct ieee80211vap *vap = ni->ni_vap;
if (vap->iv_auth->ia_node_leave != NULL)
vap->iv_auth->ia_node_leave(ni);
ieee80211_clear_aid_bitmap(ic, ni->ni_associd);
ieee80211_sta_assocs_dec(vap, __func__);
ieee80211_nonqtn_sta_leave(vap, ni, __func__);
}
ieee80211_node_reclaim(nt, ni);
}
IEEE80211_NODE_UNLOCK_IRQ(nt);
}
static void
ieee80211_node_table_cleanup(struct ieee80211com *ic, struct ieee80211_node_table *nt)
{
struct ieee80211_node *ni, *next;
TAILQ_FOREACH_SAFE(ni, &nt->nt_node, ni_list, next) {
if (ni->ni_associd != 0) {
struct ieee80211vap *vap = ni->ni_vap;
if (vap->iv_auth->ia_node_leave != NULL)
vap->iv_auth->ia_node_leave(ni);
ieee80211_clear_aid_bitmap(ic, ni->ni_associd);
}
ieee80211_node_reclaim(nt, ni);
}
del_timer(&nt->nt_wds_aging_timer);
IEEE80211_SCAN_LOCK_DESTROY(nt);
IEEE80211_NODE_LOCK_DESTROY(nt);
}
void
ieee80211_node_ba_del(struct ieee80211_node *ni, uint8_t tid, uint8_t is_tx, uint16_t reason)
{
enum ieee80211_ba_state new_state;
int state_changed = 0;
if (is_tx) {
if (ni->ni_vap->iv_ba_control & (1 << tid)) {
new_state = IEEE80211_BA_NOT_ESTABLISHED;
} else {
new_state = IEEE80211_BA_BLOCKED;
}
if (ni->ni_ba_tx[tid].state != new_state) {
state_changed = 1;
memset(&ni->ni_ba_tx[tid], 0, sizeof(ni->ni_ba_tx[tid]));
ieee80211_node_tx_ba_set_state(ni, tid, new_state,
reason == IEEE80211_REASON_STA_NOT_USE ?
IEEE80211_TX_BA_REQUEST_NEW_ATTEMPT_TIMEOUT : 0);
}
} else {
if (ni->ni_ba_rx[tid].state != IEEE80211_BA_NOT_ESTABLISHED) {
#ifdef CONFIG_QVSP
struct ieee80211_ba_throt ba_throt;
/* backup and restore BA throt state across BA delete */
memcpy(&ba_throt, &ni->ni_ba_rx[tid].ba_throt, sizeof(struct ieee80211_ba_throt));
#endif
state_changed = 1;
memset(&ni->ni_ba_rx[tid], 0, sizeof(ni->ni_ba_rx[tid]));
ni->ni_ba_rx[tid].state = IEEE80211_BA_NOT_ESTABLISHED;
#ifdef CONFIG_QVSP
memcpy(&ni->ni_ba_rx[tid].ba_throt, &ba_throt, sizeof(struct ieee80211_ba_throt));
#endif
}
}
if (state_changed && ni->ni_ic->ic_htdelba) {
IEEE80211_NOTE(ni->ni_vap,
IEEE80211_MSG_NODE | IEEE80211_MSG_INPUT | IEEE80211_MSG_OUTPUT, ni,
"block ack del tid=%d is_tx=%d reason=%d",
(int)tid, (int)is_tx, (int)reason);
(*ni->ni_ic->ic_htdelba)(ni, tid, is_tx);
}
}
EXPORT_SYMBOL(ieee80211_node_ba_del);
#define IEEE80211_MAX_WDS_BA_ATTEMPTS 3
static void
ieee80211_timeout_station_work_wds(struct work_struct *work)
{
struct ieee80211_node *ni = container_of(work, struct ieee80211_node, ni_inact_work);
struct ieee80211vap *vap = ni->ni_vap;
struct ieee80211com *ic = ni->ni_ic;
struct qtn_wds_ext_event_data event_data;
struct ieee80211vap *primary_vap = NULL;
if (ni->ni_inact == 0) {
/* Nothing received (including beacons) */
IEEE80211_NOTE(ni->ni_vap,
IEEE80211_MSG_INACT | IEEE80211_MSG_NODE, ni,
"%s", "no beacons received from WDS peer");
ieee80211_node_ba_state_clear(ni);
ni->ni_inact = ni->ni_inact_reload;
ic->ic_pm_reason = IEEE80211_PM_LEVEL_INACTIVITY_IN_WDS;
ieee80211_pm_queue_work(ic);
if ((ic->ic_extender_role != IEEE80211_EXTENDER_ROLE_NONE) &&
!IEEE80211_VAP_WDS_BASIC(vap)) {
IEEE80211_EXTENDER_DPRINTF(vap, IEEE80211_EXTENDER_MSG_WARN,
"QHop: no beacons received from peer %pM\n",
ni->ni_macaddr);
primary_vap = TAILQ_FIRST(&ic->ic_vaps);
extender_event_data_prepare(ic, NULL,
&event_data,
WDS_EXT_LINK_STATUS_UPDATE,
ni->ni_macaddr);
ieee80211_extender_send_event(primary_vap, &event_data, NULL);
ieee80211_extender_remove_peer_wds_info(ic, ni->ni_macaddr);
}
}
if (!IEEE80211_BA_IS_COMPLETE(ni->ni_ba_rx[IEEE80211_WDS_LINK_MAINTAIN_BA_TID].state) ||
!IEEE80211_BA_IS_COMPLETE(ni->ni_ba_tx[IEEE80211_WDS_LINK_MAINTAIN_BA_TID].state)) {
if (ni->ni_wds_ba_attempts++ >= IEEE80211_MAX_WDS_BA_ATTEMPTS) {
/* Still not fully established, send DELBA to peer */
ni->ni_wds_ba_attempts = 0;
ieee80211_node_ba_state_clear(ni);
ic->ic_setparam(ni, IEEE80211_PARAM_HT_DELBA,
IEEE80211_WDS_LINK_MAINTAIN_BA_TID, 0, 0); }
} else {
ni->ni_wds_ba_attempts = 0;
}
if (ni->ni_ba_tx[IEEE80211_WDS_LINK_MAINTAIN_BA_TID].state == IEEE80211_BA_NOT_ESTABLISHED) {
ieee80211_node_tx_ba_set_state(ni, IEEE80211_WDS_LINK_MAINTAIN_BA_TID,
IEEE80211_BA_REQUESTED, 0);
}
ieee80211_tx_addba(ni);
}
/*
* This workqueue is called for any station that requires timeout processing.
* A node reference is taken before calling to prevent premature deletion.
* If the inact timer has not yet expired the station is probed with a null
* data probe (this can happen multiple times). If the inact timer has expired, the node
* is removed.
*/
static void
ieee80211_timeout_station_work(struct work_struct *work)
{
struct ieee80211_node *ni = container_of(work, struct ieee80211_node, ni_inact_work);
struct ieee80211vap *vap = ni->ni_vap;
if (qtn_vlan_is_group_addr(ni->ni_macaddr)) {
ieee80211_free_node(ni);
return;
}
/* Send dummy data packets to check if ACK can be received */
if ((IEEE80211_NODE_IS_TDLS_ACTIVE(ni) || IEEE80211_NODE_IS_TDLS_IDLE(ni)) &&
(ni->ni_inact <= IEEE80211_INACT_SEND_PKT_THRSH))
ieee80211_send_dummy_data(ni, vap, M_TX_DONE_IMM_INT);
if (vap->iv_opmode == IEEE80211_M_WDS) {
ieee80211_timeout_station_work_wds(work);
return;
}
if (ni->ni_inact > 0) {
if (vap->iv_opmode == IEEE80211_M_HOSTAP) {
IEEE80211_NOTE(vap, IEEE80211_MSG_INACT | IEEE80211_MSG_NODE | IEEE80211_MSG_POWER,
ni, "%s", "probe station due to inactivity");
/* Either of these frees the node reference */
if (ni->ni_flags & IEEE80211_NODE_QOS) {
/* non-QoS frames to 3rd party QoS node (Intel) can cause a BA teardown */
ieee80211_send_qosnulldata(ni, WMM_AC_BK);
} else {
ieee80211_send_nulldata(ni);
}
} else {
ieee80211_free_node(ni);
}
return;
}
IEEE80211_NOTE(ni->ni_vap,
IEEE80211_MSG_INACT | IEEE80211_MSG_NODE, ni,
"station timed out due to inactivity (refcnt %u)",
ieee80211_node_refcnt(ni));
ni->ni_vap->iv_stats.is_node_timeout++;
if (ni->ni_associd != 0 && (vap->iv_opmode != IEEE80211_M_STA ||
IEEE80211_NODE_IS_NONE_TDLS(ni))) {
IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_DISASSOC, IEEE80211_REASON_ASSOC_EXPIRE);
ieee80211_dot11_msg_send(ni->ni_vap, (char *)ni->ni_macaddr,
d11_m[IEEE80211_DOT11_MSG_CLIENT_REMOVED],
d11_c[IEEE80211_DOT11_MSG_REASON_CLIENT_TIMEOUT],
-1, NULL, NULL, NULL);
}
if (IEEE80211_NODE_IS_TDLS_ACTIVE(ni)) {
enum ieee80211_tdls_operation operation = IEEE80211_TDLS_TEARDOWN;
if (ieee80211_tdls_send_event(ni, IEEE80211_EVENT_STATION_LOW_ACK, &operation))
IEEE80211_TDLS_DPRINTF(vap, IEEE80211_MSG_TDLS, IEEE80211_TDLS_MSG_WARN,
"TDLS %s: Send event %d failed\n", __func__, operation);
} else if (IEEE80211_NODE_IS_TDLS_IDLE(ni)) {
IEEE80211_TDLS_DPRINTF(vap, IEEE80211_MSG_TDLS, IEEE80211_TDLS_MSG_DBG,
"TDLS %s: TDLS peer timed out due to inactivity (tdls_status %d)\n",
__func__, ni->tdls_status);
ieee80211_tdls_node_leave(vap, ni);
} else {
ieee80211_node_leave(ni);
}
ieee80211_free_node(ni);
}
static void
ieee80211_timeout_station_sched(struct ieee80211_node *ni)
{
ieee80211_ref_node(ni);
if (unlikely(schedule_work(&ni->ni_inact_work) == 0))
ieee80211_free_node(ni);
}
static int __inline ieee80211_wds_node_cac_check(struct ieee80211com *ic)
{
if (ic->ic_bsschan != IEEE80211_CHAN_ANYC &&
(ic->ic_bsschan->ic_flags & IEEE80211_CHAN_DFS) &&
IEEE80211_IS_CHAN_CAC_IN_PROGRESS(ic->ic_bsschan))
return 1;
return 0;
}
static void
ieee80211_timeout_station(struct ieee80211com *ic, struct ieee80211_node *ni)
{
int is_adhoc;
int su = STATS_SU;
if ((ni == ni->ni_vap->iv_bss) ||
IEEE80211_ADDR_EQ(ni->ni_vap->iv_myaddr, ni->ni_macaddr) ||
ieee80211_blacklist_check(ni)) {
return;
}
/*
* Free fragment if not needed anymore (last fragment older than 1s).
* XXX doesn't belong here
*/
if (ni->ni_rxfrag != NULL &&
time_after(jiffies, ni->ni_rxfragstamp + HZ)) {
dev_kfree_skb(ni->ni_rxfrag);
ni->ni_rxfrag = NULL;
}
IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_INACT | IEEE80211_MSG_NODE, ni,
"sta ni_inact=%u rx=%u/%u/%u ack=%u/%u/%u",
ni->ni_inact,
ni->ni_shared_stats->rx[su].pkts_cum, ni->rx_pkts,
(ni->ni_shared_stats->rx[su].pkts_cum - ni->rx_pkts),
ni->ni_shared_stats->tx[su].acks, ni->tx_acks,
(ni->ni_shared_stats->tx[su].acks - ni->tx_acks));
/*
* WDS nodes are never timed out or removed, but this timeout station work mechanism is used
* to establish a block ack if needed.
*/
if (ni->ni_vap->iv_opmode == IEEE80211_M_WDS &&
IEEE80211_ADDR_EQ(ni->ni_macaddr, ni->ni_vap->wds_mac)) {
if ((ni->ni_inact > 0) && !ieee80211_wds_node_cac_check(ic))
ni->ni_inact--;
ieee80211_timeout_station_sched(ni);
return;
}
if ((ni->ni_shared_stats->rx[su].pkts_cum != ni->rx_pkts) ||
(ni->ni_shared_stats->tx[su].acks != ni->tx_acks)) {
ni->ni_inact = ni->ni_inact_reload;
} else {
if (ni->ni_inact > 0)
ni->ni_inact--;
}
/* always reset the local counters in case the shared counters wrap */
ni->rx_pkts = ni->ni_shared_stats->rx[su].pkts_cum;
ni->tx_acks = ni->ni_shared_stats->tx[su].acks;
if (ni->ni_inact > 0) {
is_adhoc = (ic->ic_opmode == IEEE80211_M_IBSS ||
ic->ic_opmode == IEEE80211_M_AHDEMO);
if ((ni->ni_associd != 0 || is_adhoc) &&
(ni->ni_inact <= ni->ni_vap->iv_inact_probe ||
ic->ic_ocac.ocac_running)) {
ieee80211_timeout_station_sched(ni);
}
} else {
ieee80211_timeout_station_sched(ni);
}
}
/*
* Process inactive stations and do related housekeeping.
* Actual processing is offloaded to a workqueue because many of the called fuctions
* cannot run at interrupt level. This also keeps table parsing simple because nodes
* are not removed during the loop.
*/
static void
ieee80211_timeout_stations(struct ieee80211_node_table *nt)
{
struct ieee80211_node *ni;
struct ieee80211com *ic = nt->nt_ic;
IEEE80211_SCAN_LOCK_IRQ(nt);
IEEE80211_NODE_LOCK_IRQ(nt);
TAILQ_FOREACH(ni, &nt->nt_node, ni_list) {
ieee80211_timeout_station(ic, ni);
}
IEEE80211_NODE_UNLOCK_IRQ(nt);
IEEE80211_SCAN_UNLOCK_IRQ(nt);
}
/*
* Send out null frame from stations periodically
* to check the validity of the connection.
*/
static void
ieee80211_timeout_ap(struct ieee80211com *ic)
{
struct ieee80211vap *vap = NULL;
struct ieee80211_node *ni;
TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
KASSERT(vap != NULL, ("timeout ap, vap is invalid.\n"));
if ((vap->iv_opmode == IEEE80211_M_STA) &&
(vap->iv_state == IEEE80211_S_RUN)) {
ni = vap->iv_bss;
ieee80211_ref_node(ni);
IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_INACT | IEEE80211_MSG_NODE, ni,
"ap ni_inact=%u ack=%u/%u/%u",
ni->ni_inact,
ni->ni_shared_stats->tx[STATS_SU].acks, ni->tx_acks,
(ni->ni_shared_stats->tx[STATS_SU].acks - ni->tx_acks));
if (ni->ni_shared_stats->tx[STATS_SU].acks != ni->tx_acks) {
ni->ni_inact = ni->ni_inact_reload;
} else if (ni->ni_inact > 0) {
ni->ni_inact--;
}
ni->tx_acks = ni->ni_shared_stats->tx[STATS_SU].acks;
ieee80211_send_nulldata(ni);
}
}
}
int
ieee80211_should_disable_scs(struct ieee80211com *ic)
{
/* SCS doesn't support 2.4GHz on dual band (RFIC6) boards */
if (ic->ic_rf_chipid == CHIPID_DUAL) {
if ((ic->ic_curmode == IEEE80211_MODE_11B) ||
(ic->ic_curmode == IEEE80211_MODE_11G) ||
(ic->ic_curmode == IEEE80211_MODE_FH) ||
(ic->ic_curmode == IEEE80211_MODE_TURBO_G) ||
(ic->ic_curmode == IEEE80211_MODE_11NG) ||
(ic->ic_curmode == IEEE80211_MODE_11NG_HT40PM)) {
return 0;
}
}
return 1;
}
static void
ieee80211_change_bf(struct ieee80211com *ic, bool enable)
{
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
if (enable) {
ieee80211_param_to_qdrv(vap, IEEE80211_PARAM_TXBF_PERIOD, ic->ic_vopt.bf, NULL, 0);
ieee80211_param_to_qdrv(vap, IEEE80211_PARAM_EXP_MAT_SEL, 0x11, NULL, 0);
} else {
ieee80211_param_to_qdrv(vap, IEEE80211_PARAM_EXP_MAT_SEL, 0x10, NULL, 0);
ieee80211_param_to_qdrv(vap, IEEE80211_PARAM_TXBF_PERIOD, 0, NULL, 0);
}
}
static int
ieee80211_enable_vopt(struct ieee80211com *ic, bool enable)
{
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
struct net_device *dev = vap->iv_dev;
uint32_t value = 0;
ic->ic_vopt.cur_state = enable ?
IEEE80211_VOPT_ENABLED : IEEE80211_VOPT_DISABLED;
if (enable) {
/* disable bf */
ieee80211_change_bf(ic, false);
/* disable pppc */
if (!((ic->ic_flags & IEEE80211_F_DOTH) && (ic->ic_flags_ext & IEEE80211_FEXT_TPC)))
ieee80211_param_to_qdrv(vap, IEEE80211_PARAM_PPPC_SELECT, 0, NULL, 0);
ic->ic_pppc_select_enable = 0;
/* disable bbf */
ieee80211_param_to_qdrv(vap, IEEE80211_PARAM_PS_CMD, 0, NULL, 0);
/* disable Airfair time */
ic->ic_airfair = 0;
ieee80211_param_to_qdrv(vap, IEEE80211_PARAM_AIRFAIR, 0, NULL, 0);
/* disable SCS due to fake CCA statistics under veriwave test */
value = IEEE80211_SCS_SET_ENABLE << 16 | 0;
if (ieee80211_param_scs_set(dev, vap, value) == 0)
ieee80211_param_to_qdrv(vap, IEEE80211_PARAM_SCS, value, NULL, 0);
/* disable OCAC due to the same reason above */
value = IEEE80211_OCAC_SET_DISABLE << 16;
ieee80211_param_ocac_set(dev, vap, value);
/* disable QTM due to the same reason above */
if (ic->ic_vsp_get && ic->ic_vsp_set && ic->ic_vsp_get(ic, QVSP_CFG_ENABLED, &value) == 0) {
ic->ic_vopt.qtm = value;
ic->ic_vsp_set(ic, QVSP_CFG_ENABLED, 0);
}
ieee80211_param_to_qdrv(vap, IEEE80211_PARAM_VMODE, 0, NULL, 0);
/* use NON_HT_DUPLICATE format for MU NDPA */
ic->use_non_ht_duplicate_for_mu = 3;
ieee80211_param_to_qdrv(vap, IEEE80211_PARAM_USE_NON_HT_DUPLICATE_MU,
ic->use_non_ht_duplicate_for_mu, NULL, 0);
} else {
/* Restore config settings */
if (ic->ic_vopt.bf){
ieee80211_change_bf(ic, true);
}
if (ic->ic_vopt.pppc) {
ieee80211_param_to_qdrv(vap, IEEE80211_PARAM_PPPC_SELECT,
ic->ic_vopt.pppc, NULL, 0);
ic->ic_pppc_select_enable = ic->ic_vopt.pppc;
}
if (ic->ic_vopt.scs) {
value = IEEE80211_SCS_SET_ENABLE << 16 | ic->ic_vopt.scs;
if (ieee80211_param_scs_set(dev, vap, value) == 0)
ieee80211_param_to_qdrv(vap, IEEE80211_PARAM_SCS, value, NULL, 0);
}
if (ic->ic_vopt.ocac) {
value = IEEE80211_OCAC_SET_ENABLE << 16 | ic->ic_ocac.ocac_cfg.ocac_chan_ieee;
ieee80211_param_ocac_set(dev, vap, value);
}
if (ic->ic_vopt.qtm && ic->ic_vsp_set) {
ic->ic_vsp_set(ic, QVSP_CFG_ENABLED, 1);
}
if (ic->ic_vopt.bbf) {
ieee80211_param_to_qdrv(vap, IEEE80211_PARAM_PS_CMD, ic->ic_vopt.bbf, NULL, 0);
}
if (ic->ic_vopt.airfair) {
ic->ic_airfair = ic->ic_vopt.airfair;
ieee80211_param_to_qdrv(vap, IEEE80211_PARAM_AIRFAIR, ic->ic_vopt.airfair, NULL, 0);
}
ieee80211_param_to_qdrv(vap, IEEE80211_PARAM_VMODE, ic->ic_curchan->ic_maxpower_normal, NULL, 0);
/* use VHT format for MU NDPA */
ic->use_non_ht_duplicate_for_mu = 0;
ieee80211_param_to_qdrv(vap, IEEE80211_PARAM_USE_NON_HT_DUPLICATE_MU,
ic->use_non_ht_duplicate_for_mu, NULL, 0);
}
ieee80211_wireless_reassoc(vap, 0, 0);
return 0;
}
static void
ieee80211_v_node(void *arg, struct ieee80211_node *ni)
{
struct ieee80211_v_cnt *sta_cnt = arg;
if ((ni == ni->ni_vap->iv_bss) ||
IEEE80211_ADDR_EQ(ni->ni_vap->iv_myaddr, ni->ni_macaddr))
return;
sta_cnt->total++;
if (ni->ni_qtn_flags & QTN_OPTI_NODE)
sta_cnt->v++;
}
static void
ieee80211_vopt(struct ieee80211com *ic)
{
struct ieee80211_node_table *nt = &ic->ic_sta;
struct ieee80211_v_cnt sta_cnt;
uint8_t cur_state = ic->ic_vopt.cur_state;
if (cur_state == ic->ic_vopt.state)
return;
sta_cnt.total = 0;
sta_cnt.v = 0;
ieee80211_iterate_nodes(nt,
ieee80211_v_node, &sta_cnt, 0);
switch (ic->ic_vopt.state) {
case IEEE80211_VOPT_DISABLED:
ieee80211_enable_vopt(ic, false);
v_wait = 0;
break;
case IEEE80211_VOPT_ENABLED:
ieee80211_enable_vopt(ic, true);
v_wait = 0;
break;
case IEEE80211_VOPT_AUTO:
if (!v_wait) {
if ((sta_cnt.total == sta_cnt.v) &&
(cur_state != IEEE80211_VOPT_ENABLED))
ieee80211_enable_vopt(ic, true);
if ((sta_cnt.total != sta_cnt.v) &&
(cur_state != IEEE80211_VOPT_DISABLED)) {
ieee80211_enable_vopt(ic, false);
v_wait = V_WAIT_REASSOC;
}
} else
v_wait --;
break;
}
}
/*
* Per-ieee80211com inactivity timer callback.
*/
static void
ieee80211_node_timeout(unsigned long arg)
{
struct ieee80211com *ic = (struct ieee80211com *) arg;
ieee80211_timeout_stations(&ic->ic_sta);
ieee80211_timeout_ap(ic);
ieee80211_vopt(ic);
ic->ic_inact.expires = jiffies + IEEE80211_INACT_WAIT * HZ;
add_timer(&ic->ic_inact);
}
void
ieee80211_iterate_nodes(struct ieee80211_node_table *nt, ieee80211_iter_func *f,
void *arg, int ignore_blacklisted)
{
ieee80211_iterate_dev_nodes(NULL, nt, f, arg, ignore_blacklisted);
}
EXPORT_SYMBOL(ieee80211_iterate_nodes);
void
ieee80211_iterate_dev_nodes(struct net_device *dev, struct ieee80211_node_table *nt,
ieee80211_iter_func *f, void *arg, int ignore_blacklisted)
{
struct ieee80211_node *ni;
u_int gen;
IEEE80211_SCAN_LOCK_BH(nt);
gen = ++nt->nt_scangen;
restart:
IEEE80211_NODE_LOCK(nt);
TAILQ_FOREACH(ni, &nt->nt_node, ni_list) {
if ((dev != NULL && ni->ni_vap->iv_dev != dev) ||
(ignore_blacklisted && (ni->ni_blacklist_timeout > 0))) {
continue;
}
if (ni->ni_scangen != gen) {
ni->ni_scangen = gen;
ieee80211_ref_node(ni);
IEEE80211_NODE_UNLOCK(nt);
(*f)(arg, ni);
ieee80211_free_node(ni);
goto restart;
}
}
IEEE80211_NODE_UNLOCK(nt);
IEEE80211_SCAN_UNLOCK_BH(nt);
}
EXPORT_SYMBOL(ieee80211_iterate_dev_nodes);
void
ieee80211_dump_node(struct ieee80211_node_table *nt, struct ieee80211_node *ni)
{
int i;
printf("Node 0x%p: mac %s refcnt %d\n", ni,
ether_sprintf(ni->ni_macaddr), ieee80211_node_refcnt(ni));
printf(" scangen %u authmode %u flags 0x%x\n",
ni->ni_scangen, ni->ni_authmode, ni->ni_flags);
printf(" associd 0x%x txpower %u vlan %u\n",
ni->ni_associd, ni->ni_txpower, ni->ni_vlan);
printf (" rxfragstamp %lu\n", ni->ni_rxfragstamp);
for (i = 0; i < 17; i++) {
printf(" %d: txseq %u rxseq %u fragno %u\n", i,
ni->ni_txseqs[i],
ni->ni_rxseqs[i] >> IEEE80211_SEQ_SEQ_SHIFT,
ni->ni_rxseqs[i] & IEEE80211_SEQ_FRAG_MASK);
}
printf(" rstamp %u rssi %u intval %u capinfo 0x%x\n",
ni->ni_rstamp, ni->ni_rssi, ni->ni_intval, ni->ni_capinfo);
printf(" bssid %s essid \"%.*s\" channel %u:0x%x\n",
ether_sprintf(ni->ni_bssid),
ni->ni_esslen, ni->ni_essid,
ni->ni_chan != IEEE80211_CHAN_ANYC ?
ni->ni_chan->ic_freq : IEEE80211_CHAN_ANY,
ni->ni_chan != IEEE80211_CHAN_ANYC ? ni->ni_chan->ic_flags : 0);
printf(" inact %u txrate %u tdls %d\n",
ni->ni_inact, ni->ni_txrate, ni->tdls_status);
}
void
ieee80211_dump_nodes(struct ieee80211_node_table *nt)
{
ieee80211_iterate_nodes(nt,
(ieee80211_iter_func *) ieee80211_dump_node, nt, 1);
}
EXPORT_SYMBOL(ieee80211_dump_nodes);
#ifdef CONFIG_QVSP
void
ieee80211_node_vsp_send_action(void *arg, struct ieee80211_node *ni)
{
if ((ni->ni_associd != 0) && ni->ni_qtn_assoc_ie) {
ni->ni_ic->ic_send_mgmt(ni, IEEE80211_FC0_SUBTYPE_ACTION, (int)arg);
}
}
EXPORT_SYMBOL(ieee80211_node_vsp_send_action);
#endif
/*
* Handle a station joining an 11g network.
*/
static void
ieee80211_node_join_11g(struct ieee80211_node *ni)
{
struct ieee80211com *ic = ni->ni_ic;
struct ieee80211vap *vap = ni->ni_vap;
IEEE80211_LOCK_ASSERT(ic);
KASSERT(IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan),
("not in 11g, bss %u:0x%x, curmode %u", ic->ic_bsschan->ic_freq,
ic->ic_bsschan->ic_flags, ic->ic_curmode));
/*
* If STA isn't capable of short slot time, bump
* the count of long slot time stations.
*/
if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME) == 0) {
ic->ic_longslotsta++;
IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC, ni,
"station needs long slot time, count %d",
ic->ic_longslotsta);
}
/*
* If the new station is not an ERP station
* then bump the counter and enable protection
* if configured.
*/
if (!ieee80211_iserp_rateset(ic, &ni->ni_rates)) {
ic->ic_nonerpsta++;
IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC, ni,
"station is !ERP, %d non-ERP stations associated",
ic->ic_nonerpsta);
/*
* If protection is configured, enable it.
*/
if (IEEE80211_BG_PROTECT_ENABLED(ic)) {
IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC,
"%s: enable use of protection\n", __func__);
ic->ic_flags |= IEEE80211_F_USEPROT;
}
/*
* If station does not support short preamble
* then we must enable use of Barker preamble.
*/
if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_PREAMBLE) == 0) {
IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC, ni,
"%s", "station needs long preamble");
ic->ic_flags |= IEEE80211_F_USEBARKER;
ic->ic_flags &= ~IEEE80211_F_SHPREAMBLE;
}
/* Update ERP element if this is first non ERP station */
if (IEEE80211_BG_PROTECT_ENABLED(ic) && ic->ic_nonerpsta == 1) {
ic->ic_flags_ext |= IEEE80211_FEXT_ERPUPDATE;
/* tell Muc to use cts-to-self mechanism */
ic->ic_set_11g_erp(vap, 1);
}
} else {
ni->ni_flags |= IEEE80211_NODE_ERP;
}
/*
* Disable use of short slot time in following condition.
* Note that the actual switch over to long slot time use may not
* occur until the next beacon transmission (per sec. 7.3.1.4 of 11g).
*/
if ((ic->ic_longslotsta > 0) || (ic->ic_nonerpsta > 0)) {
/* XXX vap's w/ conflicting needs won't work */
if (!IEEE80211_IS_CHAN_108G(ic->ic_bsschan)) {
/*
* Don't force slot time when switched to turbo
* mode as non-ERP stations won't be present; this
* need only be done when on the normal G channel.
*/
ieee80211_set_shortslottime(ic, 0);
}
}
}
void
ieee80211_node_ba_state_clear(struct ieee80211_node *ni)
{
uint8_t i = 0;
for (i = 0; i < 7; i++) {
ieee80211_node_ba_del(ni, i, 0, IEEE80211_REASON_UNSPECIFIED);
ieee80211_node_ba_del(ni, i, 1, IEEE80211_REASON_UNSPECIFIED);
}
}
void
ieee80211_node_implicit_ba_setup(struct ieee80211_node *ni)
{
int i = 0;
u_int8_t our_ba = ni->ni_vap->iv_implicit_ba;
u_int8_t their_ba = ni->ni_implicit_ba;
u_int16_t size = ni->ni_implicit_ba_size;
for (i = 0; i < 7; i++) {
if ((our_ba >> i) & 0x1) {
/* Add the BA for TX */
ni->ni_ba_tx[i].state = IEEE80211_BA_ESTABLISHED;
ni->ni_ba_tx[i].type = 1;
ni->ni_ba_tx[i].buff_size = size;
ni->ni_ba_tx[i].timeout = 0;
ni->ni_ba_tx[i].frag = 0;
ni->ni_ba_tx[i].seq = 0;
printk(KERN_WARNING "%s: [%s] implicit TX BA for TID %d, win_size=%d\n",
ni->ni_vap->iv_dev->name, ether_sprintf(ni->ni_macaddr), i, (int)size);
}
if ((their_ba >> i) & 0x1) {
/* Add the BA for RX */
ni->ni_ba_rx[i].state = IEEE80211_BA_ESTABLISHED;
ni->ni_ba_rx[i].type = 1;
ni->ni_ba_rx[i].buff_size = size;
ni->ni_ba_rx[i].timeout = 0;
ni->ni_ba_rx[i].frag = 0;
ni->ni_ba_rx[i].seq = 0;
printk(KERN_WARNING "%s: [%s] implicit RX BA for TID %d, win_size=%d\n",
ni->ni_vap->iv_dev->name, ether_sprintf(ni->ni_macaddr), i, (int)size);
}
}
}
/*
* Decide wheter to turn off/on reception of control packets.
* If third party peers are present: Allow control frames
*/
void ieee80211_set_recv_ctrlpkts(struct ieee80211vap *vap)
{
struct ieee80211com *ic = vap->iv_ic;
if (ic->ic_nonqtn_sta) {
ieee80211_param_to_qdrv(vap, IEEE80211_PARAM_RX_CTRL_FILTER,
1, NULL, 0);
} else {
ieee80211_param_to_qdrv(vap, IEEE80211_PARAM_RX_CTRL_FILTER,
0, NULL, 0);
}
}
int ieee80211_aid_acquire(struct ieee80211com *ic, struct ieee80211_node *ni)
{
static uint16_t last_used_aid = 0;
int aid;
int ret = 0;
IEEE80211_LOCK_IRQ(ic);
for (aid = (last_used_aid + 1) % QTN_NODE_TBL_SIZE_LHOST;
aid != last_used_aid;
aid = ((aid + 1) % QTN_NODE_TBL_SIZE_LHOST)) {
/* AID 0 is reserved for the BSS */
if (aid == 0) {
continue;
}
if ((ni->ni_vap->iv_opmode == IEEE80211_M_STA) &&
(aid == IEEE80211_AID(ni->ni_vap->iv_bss->ni_associd)))
continue;
if (!IEEE80211_AID_ISSET(ic, aid)) {
break;
}
}
if (aid == last_used_aid) {
ret = -1;
} else {
last_used_aid = aid;
ni->ni_associd = aid | 0xc000;
IEEE80211_AID_SET(ic, ni->ni_associd);
}
IEEE80211_UNLOCK_IRQ(ic);
return ret;
}
EXPORT_SYMBOL(ieee80211_aid_acquire);
void
ieee80211_node_join(struct ieee80211_node *ni, int resp)
{
struct ieee80211com *ic = ni->ni_ic;
struct ieee80211vap *vap = ni->ni_vap, *tmp_vap;
int newassoc;
u_int8_t beacon_update_required = 0;
if (ni->ni_associd == 0) {
if (ieee80211_aid_acquire(ic, ni)) {
IEEE80211_SEND_MGMT(ni, resp,
IEEE80211_REASON_ASSOC_TOOMANY);
ieee80211_node_leave(ni);
ieee80211_off_channel_resume(vap);
return;
}
IEEE80211_LOCK_IRQ(ic);
ieee80211_sta_assocs_inc(vap, __func__);
ieee80211_nonqtn_sta_join(vap, ni, __func__);
if (IEEE80211_ATH_CAP(vap, ni, IEEE80211_ATHC_TURBOP))
ic->ic_dt_sta_assoc++;
if (IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan))
ieee80211_node_join_11g(ni);
IEEE80211_UNLOCK_IRQ(ic);
newassoc = 1;
} else {
newassoc = 0;
}
printk(KERN_WARNING "%s: %s %s, tot=%u/%u\n",
vap->iv_dev->name, ether_sprintf(ni->ni_macaddr),
ic->ic_ocac.ocac_running ? "connected" : "associated",
ic->ic_sta_assoc, ic->ic_nonqtn_sta);
if (ni->ni_authmode != IEEE80211_AUTH_8021X) {
ieee80211_node_authorize(ni);
#if defined(CONFIG_QTN_BSA_SUPPORT)
if (vap->bsa_status == BSA_STATUS_ACTIVE)
ieee80211_bsa_connect_complete_event_send(vap,ni);
#endif
}
IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_DEBUG, ni,
"station %sassociated at aid %d: %s preamble, %s slot time"
"%s%s%s%s%s%s%s",
newassoc ? "" : "re",
IEEE80211_NODE_AID(ni),
(ic->ic_flags & IEEE80211_F_SHPREAMBLE) &&
(ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_PREAMBLE) ? "short" : "long",
ic->ic_flags & IEEE80211_F_SHSLOT ? "short" : "long",
ic->ic_flags & IEEE80211_F_USEPROT ? ", protection" : "",
ni->ni_flags & IEEE80211_NODE_QOS ? ", QoS" : "",
IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_TURBOP) ?
", turbo" : "",
IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_COMP) ?
", compression" : "",
IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_FF) ?
", fast-frames" : "",
IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_XR) ? ", XR" : "",
IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_AR) ? ", AR" : ""
);
if(vap->iv_pmf) {
ni->ni_sa_query_timeout = 0;
} else {
/* vap is not PMF capable, reset any flags */
ni->ni_rsn.rsn_caps &= ~(RSN_CAP_MFP_REQ | RSN_CAP_MFP_CAP);
}
/* give driver a chance to set up state like ni_txrate */
if (ic->ic_newassoc != NULL)
ic->ic_newassoc(ni, newassoc);
ni->ni_inact_reload = vap->iv_inact_auth;
ni->ni_inact = ni->ni_inact_reload;
IEEE80211_SEND_MGMT(ni, resp, IEEE80211_STATUS_SUCCESS);
/* tell the authenticator about new station */
if (vap->iv_auth->ia_node_join != NULL)
vap->iv_auth->ia_node_join(ni);
indicate_association();
ieee80211_notify_node_join(ni, newassoc);
/*For AP mode, record the strat time of association with STA*/
ni->ni_start_time_assoc = get_jiffies_64();
/* Update beacon if required */
if (newassoc) {
beacon_update_required = 1;
if ((ni->ni_flags & IEEE80211_NODE_HT) != IEEE80211_NODE_HT) {
if (ic->ic_non_ht_sta == 0 ||
(ic->ic_flags_ext & IEEE80211_FEXT_ERPUPDATE))
beacon_update_required = 1;
ic->ic_non_ht_sta++;
} else {
if ((ic->ic_htcap.cap & IEEE80211_HTCAP_C_CHWIDTH40) &&
!(ni->ni_htcap.cap & IEEE80211_HTCAP_C_CHWIDTH40)) {
if(ic->ic_ht_20mhz_only_sta == 0)
beacon_update_required = 1;
ic->ic_ht_20mhz_only_sta++;
}
}
if ((ic->ic_peer_rts_mode == IEEE80211_PEER_RTS_PMP) &&
((ic->ic_sta_assoc - ic->ic_nonqtn_sta) >= IEEE80211_MAX_STA_CCA_ENABLED)) {
ic->ic_peer_rts = 1;
TAILQ_FOREACH(tmp_vap, &ic->ic_vaps, iv_next) {
if (tmp_vap->iv_opmode != IEEE80211_M_HOSTAP)
continue;
if (tmp_vap->iv_state != IEEE80211_S_RUN)
continue;
if (tmp_vap == vap) {
beacon_update_required = 1;
continue;
}
ic->ic_beacon_update(tmp_vap);
}
}
/* Update beacon */
if(beacon_update_required) {
ic->ic_beacon_update(vap);
}
ic->ic_pm_reason = IEEE80211_PM_LEVEL_NODE_JOIN;
ieee80211_pm_queue_work(ic);
#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
{
struct net_bridge_port *br_port = get_br_port(vap->iv_dev);
if (br_fdb_update_const_hook && br_port) {
br_fdb_update_const_hook(br_port->br, br_port,
ni->ni_macaddr, 0, 0, IEEE80211_NODE_IDX_MAP(ni->ni_node_idx));
}
}
#endif
}
}
/*
* Handle a station leaving an 11g network.
*/
static void
ieee80211_node_leave_11g(struct ieee80211_node *ni)
{
struct ieee80211com *ic = ni->ni_ic;
struct ieee80211vap *vap = ni->ni_vap;
IEEE80211_LOCK_ASSERT(ic);
KASSERT(IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan),
("not in 11g, bss %u:0x%x, curmode %u",
ic->ic_bsschan->ic_freq, ic->ic_bsschan->ic_flags,
ic->ic_curmode));
/*
* If a long slot station do the slot time bookkeeping.
*/
if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME) == 0) {
/* this can be 0 on mode changes from B -> G */
if (ic->ic_longslotsta > 0)
ic->ic_longslotsta--;
IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC, ni,
"long slot time station leaves, count now %d",
ic->ic_longslotsta);
}
/*
* If a non-ERP station do the protection-related bookkeeping.
*/
if ((ni->ni_flags & IEEE80211_NODE_ERP) == 0) {
/* this can be 0 on mode changes from B -> G */
if (ic->ic_nonerpsta > 0)
ic->ic_nonerpsta--;
IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC, ni,
"non-ERP station leaves, count now %d", ic->ic_nonerpsta);
if (IEEE80211_BG_PROTECT_ENABLED(ic) && ic->ic_nonerpsta == 0) {
IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC,
"%s: disable use of protection\n", __func__);
ic->ic_flags &= ~IEEE80211_F_USEPROT;
/* XXX verify mode? */
if (ic->ic_caps & IEEE80211_C_SHPREAMBLE) {
IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC,
"%s: re-enable use of short preamble\n",
__func__);
ic->ic_flags |= IEEE80211_F_SHPREAMBLE;
ic->ic_flags &= ~IEEE80211_F_USEBARKER;
}
ic->ic_set_11g_erp(vap, 0);
ic->ic_flags_ext |= IEEE80211_FEXT_ERPUPDATE;
}
}
if (!ic->ic_longslotsta && !ic->ic_nonerpsta) {
/*
* Re-enable use of short slot time if supported
* and not operating in IBSS mode (per spec).
*/
if ((ic->ic_caps & IEEE80211_C_SHSLOT) &&
vap->iv_opmode != IEEE80211_M_IBSS) {
IEEE80211_DPRINTF(vap, IEEE80211_MSG_ASSOC,
"%s: re-enable use of short slot time\n",
__func__);
ieee80211_set_shortslottime(ic, 1);
}
}
}
static u_int8_t
ieee80211_node_assoc_cleanup(struct ieee80211_node *ni)
{
struct ieee80211com *ic = ni->ni_ic;
struct ieee80211vap *vap = ni->ni_vap;
u_int8_t beacon_update_required = 0;
struct ieee80211vap *tmp_vap;
/*
* Tell the authenticator the station is leaving.
* Note that we must do this before yanking the
* association id as the authenticator uses the
* associd to locate its state block.
*/
if (vap->iv_auth->ia_node_leave != NULL) {
vap->iv_auth->ia_node_leave(ni);
}
ieee80211_notify_sta_stats(ni);
IEEE80211_LOCK_IRQ(ic);
if (IEEE80211_AID(ni->ni_associd) != 0) {
ieee80211_aid_remove(ni);
ieee80211_idx_remove(ni);
if (IEEE80211_NODE_IS_NONE_TDLS(ni)) {
ieee80211_sta_assocs_dec(vap, __func__);
if (ic->ic_sta_assoc == 0)
indicate_disassociation();
}
if (vap->iv_opmode == IEEE80211_M_WDS) {
vap->iv_vapnode_idx = 0;
ic->ic_wds_links--;
}
}
if ((vap->iv_opmode != IEEE80211_M_WDS) &&
IEEE80211_NODE_IS_NONE_TDLS(ni)) {
ieee80211_nonqtn_sta_leave(vap, ni, __func__);
}
if ((vap->iv_opmode == IEEE80211_M_HOSTAP) ||
(vap->iv_opmode == IEEE80211_M_IBSS)) {
beacon_update_required = 1;
if ((ni->ni_flags & IEEE80211_NODE_HT) != IEEE80211_NODE_HT) {
ic->ic_non_ht_sta--;
if (ic->ic_non_ht_sta == 0) {
beacon_update_required = 1;
}
} else {
if ((ic->ic_htcap.cap & IEEE80211_HTCAP_C_CHWIDTH40) &&
!(ni->ni_htcap.cap & IEEE80211_HTCAP_C_CHWIDTH40)) {
ic->ic_ht_20mhz_only_sta--;
if (ic->ic_ht_20mhz_only_sta == 0) {
beacon_update_required = 1;
}
}
}
}
if ((ic->ic_peer_rts_mode == IEEE80211_PEER_RTS_PMP) &&
((ic->ic_sta_assoc - ic->ic_nonqtn_sta) < IEEE80211_MAX_STA_CCA_ENABLED)) {
ic->ic_peer_rts = 0;
TAILQ_FOREACH(tmp_vap, &ic->ic_vaps, iv_next) {
if (tmp_vap->iv_opmode != IEEE80211_M_HOSTAP)
continue;
if (tmp_vap->iv_state != IEEE80211_S_RUN)
continue;
if (tmp_vap == vap) {
beacon_update_required = 1;
continue;
}
ic->ic_beacon_update(tmp_vap);
}
}
if (IEEE80211_ATH_CAP(vap, ni, IEEE80211_ATHC_TURBOP))
ic->ic_dt_sta_assoc--;
if (IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan)) {
ieee80211_node_leave_11g(ni);
}
/* Non-ERP station leaving the network is updated in
ieee80211_node_leave_11g, So need to do beacon update here */
if (ic->ic_flags_ext & IEEE80211_FEXT_ERPUPDATE) {
beacon_update_required = 1;
}
IEEE80211_UNLOCK_IRQ(ic);
/*
* Cleanup station state. In particular clear various
* state that might otherwise be reused if the node
* is reused before the reference count goes to zero
* (and memory is reclaimed).
*/
ieee80211_sta_leave(ni);
return beacon_update_required;
}
/*
* Remove the node from node table on Blacklist timeout
*/
void ieee80211_remove_node_blacklist_timeout(struct ieee80211_node *ni)
{
struct ieee80211_node_table *nt = ni->ni_table;
if (nt != NULL) {
ieee80211_remove_wds_addr(nt,ni->ni_macaddr);
IEEE80211_NODE_LOCK_IRQ(nt);
ieee80211_node_reclaim(nt, ni);
IEEE80211_NODE_UNLOCK_IRQ(nt);
} else {
ieee80211_free_node(ni);
}
}
EXPORT_SYMBOL(ieee80211_remove_node_blacklist_timeout);
/*
* Handle bookkeeping for a station/neighbor leaving
* the bss when operating in ap, wds or adhoc modes.
*/
void
ieee80211_node_leave(struct ieee80211_node *ni)
{
struct ieee80211com *ic = ni->ni_ic;
struct ieee80211vap *vap = ni->ni_vap;
u_int8_t beacon_update_required = 0;
/* remove pending entry in queue */
ieee80211_ppqueue_remove_node_leave(&vap->iv_ppqueue, ni);
if ((ic->ic_measure_info.ni == ni) && (ic->ic_measure_info.status == MEAS_STATUS_RUNNING)) {
ic->ic_measure_info.status = MEAS_STATUS_DISCRAD;
}
/* Tell the qdrv */
ic->ic_node_auth_state_change(ni, 0);
ieee80211_scs_clean_stats(ic, IEEE80211_SCS_STATE_MEASUREMENT_CHANGE_CLEAN, 0);
IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_DEBUG, ni,
"station with aid %d leaves (refcnt %u)",
IEEE80211_NODE_AID(ni), ieee80211_node_refcnt(ni));
if (ni->ni_associd != 0 && ((vap->iv_opmode != IEEE80211_M_STA) ||
!IEEE80211_NODE_IS_NONE_TDLS(ni))) {
beacon_update_required = ieee80211_node_assoc_cleanup(ni);
}
printk(KERN_WARNING "%s: %s %s, tot=%u/%u\n",
vap->iv_dev->name, ether_sprintf(ni->ni_macaddr),
ic->ic_ocac.ocac_running ? "disconnected" : "disassociated",
ic->ic_sta_assoc, ic->ic_nonqtn_sta);
if (ni == vap->iv_mgmt_retry_ni) {
vap->iv_mgmt_retry_ni = NULL;
vap->iv_mgmt_retry_cnt = 0;
}
/*
* Remove the node from any table it's recorded in and
* drop the caller's reference. Removal from the table
* is important to ensure the node is not reprocessed
* for inactivity.
*/
if (ni->ni_blacklist_timeout == 0) {
ieee80211_remove_node_blacklist_timeout(ni);
}
/*
* Update beacon
* Anyway, check mode before beacon update is good
*/
if ((vap->iv_opmode == IEEE80211_M_HOSTAP || vap->iv_opmode == IEEE80211_M_IBSS) &&
beacon_update_required &&
(vap->iv_state == IEEE80211_S_RUN)) {
ic->ic_beacon_update(vap);
}
ic->ic_pm_reason = IEEE80211_PM_LEVEL_NODE_LEFT;
ieee80211_pm_queue_work(ic);
}
EXPORT_SYMBOL(ieee80211_node_leave);
u_int8_t
ieee80211_getrssi(struct ieee80211com *ic)
{
#define NZ(x) ((x) == 0 ? 1 : (x))
struct ieee80211_node_table *nt = &ic->ic_sta;
struct ieee80211vap *vap;
u_int32_t rssi_samples, rssi_total;
struct ieee80211_node *ni;
rssi_total = 0;
rssi_samples = 0;
switch (ic->ic_opmode) {
case IEEE80211_M_IBSS: /* average of all ibss neighbors */
/* XXX locking */
TAILQ_FOREACH(ni, &nt->nt_node, ni_list)
if (ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) {
rssi_samples++;
rssi_total += ic->ic_node_getrssi(ni);
}
break;
case IEEE80211_M_AHDEMO: /* average of all neighbors */
/* XXX locking */
TAILQ_FOREACH(ni, &nt->nt_node, ni_list) {
if (memcmp(ni->ni_vap->iv_myaddr, ni->ni_macaddr,
IEEE80211_ADDR_LEN)!=0) {
rssi_samples++;
rssi_total += ic->ic_node_getrssi(ni);
}
}
break;
case IEEE80211_M_HOSTAP: /* average of all associated stations */
/* XXX locking */
TAILQ_FOREACH(ni, &nt->nt_node, ni_list)
if (IEEE80211_AID(ni->ni_associd) != 0) {
rssi_samples++;
rssi_total += ic->ic_node_getrssi(ni);
}
break;
case IEEE80211_M_MONITOR: /* XXX */
case IEEE80211_M_STA: /* use stats from associated ap */
default:
TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
if (vap->iv_bss != NULL) {
rssi_samples++;
rssi_total += ic->ic_node_getrssi(vap->iv_bss);
}
break;
}
return rssi_total / NZ(rssi_samples);
#undef NZ
}
EXPORT_SYMBOL(ieee80211_getrssi);
void ieee80211_node_tx_ba_set_state(struct ieee80211_node *ni, uint8_t tid, enum ieee80211_ba_state state, unsigned delay)
{
struct ieee80211_ba_tid *ba = &ni->ni_ba_tx[tid];
write_seqlock_bh(&ba->state_lock);
ba->state = state;
ba->state_deadline = 0;
if (delay) {
ba->state_deadline = jiffies + delay;
if (ba->state_deadline == 0) {
++ba->state_deadline;
}
}
write_sequnlock_bh(&ba->state_lock);
}
EXPORT_SYMBOL(ieee80211_node_tx_ba_set_state);
int ieee80211_node_is_intel(struct ieee80211_node *ni)
{
int i;
uint16_t peer_cap;
struct ieee80211_ie_vhtcap *vhtcap;
if (ni->ni_qtn_flags & QTN_IS_INTEL_NODE) {
return (1);
}
/* check the established TID TX BA timeout, if any one is none zero, it is Intel */
for (i = 0; i < WME_NUM_TID; i++) {
if ((ni->ni_ba_tx[i].state == IEEE80211_BA_ESTABLISHED) &&
(ni->ni_ba_tx[i].timeout != 0)) {
ni->ni_qtn_flags |= QTN_IS_INTEL_NODE;
return (1);
}
}
/* Try to identify problem peers - may cause other peer stations to be blacklisted */
peer_cap = IEEE80211_HTCAP_CAPABILITIES(&ni->ni_ie_htcap);
if ((ni->ni_qtn_assoc_ie == NULL) && !(ni->ni_qtn_flags & QTN_IS_BCM_NODE) &&
!(IEEE80211_NODE_IS_VHT(ni)) &&
(ni->ni_htcap.mpduspacing == 5) &&
!(peer_cap & IEEE80211_HTCAP_C_TXSTBC) &&
(peer_cap & IEEE80211_HTCAP_C_SHORTGI20) &&
((ni->ni_htcap.mcsset[IEEE80211_HT_MCSSET_20_40_UEQM1] & 0x1) == 0x01)) {
ni->ni_qtn_flags |= QTN_IS_INTEL_NODE;
return (1);
}
vhtcap = &ni->ni_ie_vhtcap;
if ((ni->ni_qtn_assoc_ie == NULL) && (IEEE80211_NODE_IS_VHT(ni)) &&
(ni->ni_vendor != PEER_VENDOR_BRCM) && (ni->ni_vendor != PEER_VENDOR_ATH) &&
(ni->ni_vendor != PEER_VENDOR_RLNK) && !(IEEE80211_VHTCAP_GET_RXLDPC(vhtcap)) &&
!(IEEE80211_VHTCAP_GET_TXSTBC(vhtcap)) &&
!(IEEE80211_VHTCAP_GET_HTC_VHT(vhtcap)) &&
!(IEEE80211_VHTCAP_GET_RXANTPAT(vhtcap))) {
ni->ni_qtn_flags |= QTN_IS_INTEL_NODE;
return (1);
}
return (0);
}
EXPORT_SYMBOL(ieee80211_node_is_intel);
int ieee80211_node_is_realtek(struct ieee80211_node *ni)
{
int ret = 0;
if ((ni->ni_vendor == PEER_VENDOR_RTK) ||
(ni->ni_qtn_flags & QTN_IS_REALTEK_NODE)) {
ret = 1;
} else if (ni->ni_vendor == PEER_VENDOR_NONE) {
/*
* It is likely that the association request frame from Realtek station
* doesn't have vendor IE, so we have to detect Realtek station by its
* some properties.
* The below judgement logic is for Edimax AC-1200, which is Realtek
* 2*2 11ac chip.
*/
struct ieee80211_ie_vhtcap *vhtcap = &ni->ni_ie_vhtcap;
uint32_t ni_oui = (ni->ni_macaddr[2] << 16) | (ni->ni_macaddr[1] << 8) | ni->ni_macaddr[0];
/* Edimax AC-1200 detection */
if ((ni_oui == EDIMAX_OUI) &&
IEEE80211_NODE_IS_VHT(ni) &&
(ni->ni_htcap.mpduspacing == 0) &&
(ni->ni_htcap.mcsset[IEEE80211_HT_MCSSET_20_40_NSS2]) &&
(ni->ni_htcap.mcsset[IEEE80211_HT_MCSSET_20_40_NSS3] == 0) &&
!IEEE80211_VHTCAP_GET_CHANWIDTH(vhtcap) &&
IEEE80211_VHTCAP_GET_SGI_80MHZ(vhtcap) &&
IEEE80211_VHTCAP_GET_HTC_VHT(vhtcap) &&
!IEEE80211_VHTCAP_GET_RXANTPAT(vhtcap) &&
!IEEE80211_VHTCAP_GET_TXANTPAT(vhtcap)) {
ret = 1;
}
}
return ret;
}
EXPORT_SYMBOL(ieee80211_node_is_realtek);
int ieee80211_node_is_opti_node(struct ieee80211_node *ni)
{
struct ieee80211_ie_vhtcap *vhtcap = &ni->ni_ie_vhtcap;
int ret = 0;
if ((ni->ni_qtn_assoc_ie == NULL) && (IEEE80211_NODE_IS_VHT(ni)) &&
(ni->ni_vendor != PEER_VENDOR_BRCM) && (ni->ni_vendor != PEER_VENDOR_ATH) &&
(ni->ni_vendor != PEER_VENDOR_RLNK) &&
!(ni->ni_qtn_flags & QTN_IS_REALTEK_NODE) &&
!(IEEE80211_VHTCAP_GET_RXLDPC(vhtcap)) &&
!(IEEE80211_VHTCAP_GET_RXSTBC(vhtcap)) &&
!(IEEE80211_VHTCAP_GET_SU_BEAMFORMER(vhtcap)) &&
!(IEEE80211_VHTCAP_GET_SU_BEAMFORMEE(vhtcap)))
ret = 1;
if ((ni->ni_qtn_assoc_ie == NULL) && (IEEE80211_NODE_IS_HT(ni)) &&
!IEEE80211_NODE_IS_VHT(ni) &&
!(ni->ni_vendor & PEER_VENDOR_MASK) &&
!(ni->ni_qtn_flags & QTN_IS_REALTEK_NODE) &&
!(ni->ni_ext_flags & IEEE80211_NODE_OP_MODE_NOTI) &&
(ni->ni_raw_bintval == 0xa))
ret = 1;
return ret;
}
EXPORT_SYMBOL(ieee80211_node_is_opti_node);
struct ieee80211_node *ieee80211_find_node_by_aid(struct ieee80211com *ic, uint8_t aid)
{
struct ieee80211_node_table *nt = &ic->ic_sta;
struct ieee80211_node *ni;
int found = 0;
IEEE80211_NODE_LOCK_IRQ(nt);
TAILQ_FOREACH(ni, &nt->nt_node, ni_list) {
if ((ni->ni_associd & 0x3FFF) == aid) {
found = 1;
break;
}
}
IEEE80211_NODE_UNLOCK_IRQ(nt);
if (found) {
ieee80211_ref_node(ni);
return (ni);
}
return (NULL);
}
EXPORT_SYMBOL(ieee80211_find_node_by_aid);