/*
* BSS client mode implementation
- * Copyright 2003, Jouni Malinen <jkmaline@cc.hut.fi>
+ * Copyright 2003-2008, Jouni Malinen <j@w1.fi>
* Copyright 2004, Instant802 Networks, Inc.
* Copyright 2005, Devicescape Software, Inc.
* Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
* published by the Free Software Foundation.
*/
-/* TODO:
- * order BSS list by RSSI(?) ("quality of AP")
- * scan result table filtering (by capability (privacy, IBSS/BSS, WPA/RSN IE,
- * SSID)
- */
#include <linux/delay.h>
#include <linux/if_ether.h>
#include <linux/skbuff.h>
-#include <linux/netdevice.h>
#include <linux/if_arp.h>
-#include <linux/wireless.h>
-#include <linux/random.h>
#include <linux/etherdevice.h>
#include <linux/rtnetlink.h>
-#include <net/iw_handler.h>
#include <net/mac80211.h>
+#include <asm/unaligned.h>
#include "ieee80211_i.h"
#include "rate.h"
#include "led.h"
-#include "mesh.h"
#define IEEE80211_ASSOC_SCANS_MAX_TRIES 2
#define IEEE80211_AUTH_TIMEOUT (HZ / 5)
#define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
#define IEEE80211_ASSOC_MAX_TRIES 3
#define IEEE80211_MONITORING_INTERVAL (2 * HZ)
-#define IEEE80211_MESH_HOUSEKEEPING_INTERVAL (60 * HZ)
-#define IEEE80211_PROBE_INTERVAL (60 * HZ)
+#define IEEE80211_PROBE_IDLE_TIME (60 * HZ)
#define IEEE80211_RETRY_AUTH_INTERVAL (1 * HZ)
-#define IEEE80211_SCAN_INTERVAL (2 * HZ)
-#define IEEE80211_SCAN_INTERVAL_SLOW (15 * HZ)
-#define IEEE80211_IBSS_JOIN_TIMEOUT (7 * HZ)
-
-#define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ)
-#define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ)
-#define IEEE80211_MESH_PEER_INACTIVITY_LIMIT (1800 * HZ)
-
-#define IEEE80211_IBSS_MAX_STA_ENTRIES 128
-
-
-/* mgmt header + 1 byte category code */
-#define IEEE80211_MIN_ACTION_SIZE (24 + 1)
-
-#define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
-#define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
-#define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFA0
-#define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
-#define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
-
-/* next values represent the buffer size for A-MPDU frame.
- * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2) */
-#define IEEE80211_MIN_AMPDU_BUF 0x8
-#define IEEE80211_MAX_AMPDU_BUF 0x40
-
-/* BSS handling */
-static struct ieee80211_sta_bss *
-ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
- u8 *ssid, u8 ssid_len)
-{
- struct ieee80211_sta_bss *bss;
-
- spin_lock_bh(&local->sta_bss_lock);
- bss = local->sta_bss_hash[STA_HASH(bssid)];
- while (bss) {
- if (!bss_mesh_cfg(bss) &&
- !memcmp(bss->bssid, bssid, ETH_ALEN) &&
- bss->freq == freq &&
- bss->ssid_len == ssid_len &&
- (ssid_len == 0 || !memcmp(bss->ssid, ssid, ssid_len))) {
- atomic_inc(&bss->users);
- break;
- }
- bss = bss->hnext;
- }
- spin_unlock_bh(&local->sta_bss_lock);
- return bss;
-}
-
-/* Caller must hold local->sta_bss_lock */
-static void __ieee80211_rx_bss_hash_add(struct ieee80211_local *local,
- struct ieee80211_sta_bss *bss)
-{
- u8 hash_idx;
-
- if (bss_mesh_cfg(bss))
- hash_idx = mesh_id_hash(bss_mesh_id(bss),
- bss_mesh_id_len(bss));
- else
- hash_idx = STA_HASH(bss->bssid);
-
- bss->hnext = local->sta_bss_hash[hash_idx];
- local->sta_bss_hash[hash_idx] = bss;
-}
-
-/* Caller must hold local->sta_bss_lock */
-static void __ieee80211_rx_bss_hash_del(struct ieee80211_local *local,
- struct ieee80211_sta_bss *bss)
-{
- struct ieee80211_sta_bss *b, *prev = NULL;
- b = local->sta_bss_hash[STA_HASH(bss->bssid)];
- while (b) {
- if (b == bss) {
- if (!prev)
- local->sta_bss_hash[STA_HASH(bss->bssid)] =
- bss->hnext;
- else
- prev->hnext = bss->hnext;
- break;
- }
- prev = b;
- b = b->hnext;
- }
-}
-
-static struct ieee80211_sta_bss *
-ieee80211_rx_bss_add(struct ieee80211_sub_if_data *sdata, u8 *bssid, int freq,
- u8 *ssid, u8 ssid_len)
-{
- struct ieee80211_local *local = sdata->local;
- struct ieee80211_sta_bss *bss;
-
- bss = kzalloc(sizeof(*bss), GFP_ATOMIC);
- if (!bss)
- return NULL;
- atomic_inc(&bss->users);
- atomic_inc(&bss->users);
- memcpy(bss->bssid, bssid, ETH_ALEN);
- bss->freq = freq;
- if (ssid && ssid_len <= IEEE80211_MAX_SSID_LEN) {
- memcpy(bss->ssid, ssid, ssid_len);
- bss->ssid_len = ssid_len;
- }
-
- spin_lock_bh(&local->sta_bss_lock);
- /* TODO: order by RSSI? */
- list_add_tail(&bss->list, &local->sta_bss_list);
- __ieee80211_rx_bss_hash_add(local, bss);
- spin_unlock_bh(&local->sta_bss_lock);
- return bss;
-}
-
-#ifdef CONFIG_MAC80211_MESH
-static struct ieee80211_sta_bss *
-ieee80211_rx_mesh_bss_get(struct ieee80211_local *local, u8 *mesh_id, int mesh_id_len,
- u8 *mesh_cfg, int freq)
-{
- struct ieee80211_sta_bss *bss;
-
- spin_lock_bh(&local->sta_bss_lock);
- bss = local->sta_bss_hash[mesh_id_hash(mesh_id, mesh_id_len)];
- while (bss) {
- if (bss_mesh_cfg(bss) &&
- !memcmp(bss_mesh_cfg(bss), mesh_cfg, MESH_CFG_CMP_LEN) &&
- bss->freq == freq &&
- mesh_id_len == bss->mesh_id_len &&
- (mesh_id_len == 0 || !memcmp(bss->mesh_id, mesh_id,
- mesh_id_len))) {
- atomic_inc(&bss->users);
- break;
- }
- bss = bss->hnext;
- }
- spin_unlock_bh(&local->sta_bss_lock);
- return bss;
-}
-
-static struct ieee80211_sta_bss *
-ieee80211_rx_mesh_bss_add(struct ieee80211_local *local, u8 *mesh_id, int mesh_id_len,
- u8 *mesh_cfg, int mesh_config_len, int freq)
-{
- struct ieee80211_sta_bss *bss;
-
- if (mesh_config_len != MESH_CFG_LEN)
- return NULL;
-
- bss = kzalloc(sizeof(*bss), GFP_ATOMIC);
- if (!bss)
- return NULL;
-
- bss->mesh_cfg = kmalloc(MESH_CFG_CMP_LEN, GFP_ATOMIC);
- if (!bss->mesh_cfg) {
- kfree(bss);
- return NULL;
- }
-
- if (mesh_id_len && mesh_id_len <= IEEE80211_MAX_MESH_ID_LEN) {
- bss->mesh_id = kmalloc(mesh_id_len, GFP_ATOMIC);
- if (!bss->mesh_id) {
- kfree(bss->mesh_cfg);
- kfree(bss);
- return NULL;
- }
- memcpy(bss->mesh_id, mesh_id, mesh_id_len);
- }
-
- atomic_inc(&bss->users);
- atomic_inc(&bss->users);
- memcpy(bss->mesh_cfg, mesh_cfg, MESH_CFG_CMP_LEN);
- bss->mesh_id_len = mesh_id_len;
- bss->freq = freq;
- spin_lock_bh(&local->sta_bss_lock);
- /* TODO: order by RSSI? */
- list_add_tail(&bss->list, &local->sta_bss_list);
- __ieee80211_rx_bss_hash_add(local, bss);
- spin_unlock_bh(&local->sta_bss_lock);
- return bss;
-}
-#endif
-
-static void ieee80211_rx_bss_free(struct ieee80211_sta_bss *bss)
-{
- kfree(bss->ies);
- kfree(bss_mesh_id(bss));
- kfree(bss_mesh_cfg(bss));
- kfree(bss);
-}
-static void ieee80211_rx_bss_put(struct ieee80211_local *local,
- struct ieee80211_sta_bss *bss)
-{
- local_bh_disable();
- if (!atomic_dec_and_lock(&bss->users, &local->sta_bss_lock)) {
- local_bh_enable();
- return;
- }
-
- __ieee80211_rx_bss_hash_del(local, bss);
- list_del(&bss->list);
- spin_unlock_bh(&local->sta_bss_lock);
- ieee80211_rx_bss_free(bss);
-}
-
-void ieee80211_rx_bss_list_init(struct ieee80211_local *local)
-{
- spin_lock_init(&local->sta_bss_lock);
- INIT_LIST_HEAD(&local->sta_bss_list);
-}
-
-void ieee80211_rx_bss_list_deinit(struct ieee80211_local *local)
+/* utils */
+static int ecw2cw(int ecw)
{
- struct ieee80211_sta_bss *bss, *tmp;
-
- list_for_each_entry_safe(bss, tmp, &local->sta_bss_list, list)
- ieee80211_rx_bss_put(local, bss);
+ return (1 << ecw) - 1;
}
-static u8 *ieee80211_bss_get_ie(struct ieee80211_sta_bss *bss, u8 ie)
+static u8 *ieee80211_bss_get_ie(struct ieee80211_bss *bss, u8 ie)
{
u8 *end, *pos;
- pos = bss->ies;
+ pos = bss->cbss.information_elements;
if (pos == NULL)
return NULL;
- end = pos + bss->ies_len;
+ end = pos + bss->cbss.len_information_elements;
while (pos + 1 < end) {
if (pos + 2 + pos[1] > end)
return NULL;
}
-/* utils */
-static int ecw2cw(int ecw)
-{
- return (1 << ecw) - 1;
-}
-
-/* frame sending functions */
-void ieee80211_sta_tx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
- int encrypt)
-{
- skb->dev = sdata->local->mdev;
- skb_set_mac_header(skb, 0);
- skb_set_network_header(skb, 0);
- skb_set_transport_header(skb, 0);
-
- skb->iif = sdata->dev->ifindex;
- skb->do_not_encrypt = !encrypt;
-
- dev_queue_xmit(skb);
-}
-
-static void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_if_sta *ifsta,
- int transaction, u8 *extra, size_t extra_len,
- int encrypt)
+static int ieee80211_compatible_rates(struct ieee80211_bss *bss,
+ struct ieee80211_supported_band *sband,
+ u32 *rates)
{
- struct ieee80211_local *local = sdata->local;
- struct sk_buff *skb;
- struct ieee80211_mgmt *mgmt;
+ int i, j, count;
+ *rates = 0;
+ count = 0;
+ for (i = 0; i < bss->supp_rates_len; i++) {
+ int rate = (bss->supp_rates[i] & 0x7F) * 5;
- skb = dev_alloc_skb(local->hw.extra_tx_headroom +
- sizeof(*mgmt) + 6 + extra_len);
- if (!skb) {
- printk(KERN_DEBUG "%s: failed to allocate buffer for auth "
- "frame\n", sdata->dev->name);
- return;
+ for (j = 0; j < sband->n_bitrates; j++)
+ if (sband->bitrates[j].bitrate == rate) {
+ *rates |= BIT(j);
+ count++;
+ break;
+ }
}
- skb_reserve(skb, local->hw.extra_tx_headroom);
- mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6);
- memset(mgmt, 0, 24 + 6);
- mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
- IEEE80211_STYPE_AUTH);
- if (encrypt)
- mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
- memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
- memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
- memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
- mgmt->u.auth.auth_alg = cpu_to_le16(ifsta->auth_alg);
- mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
- ifsta->auth_transaction = transaction + 1;
- mgmt->u.auth.status_code = cpu_to_le16(0);
- if (extra)
- memcpy(skb_put(skb, extra_len), extra, extra_len);
-
- ieee80211_sta_tx(sdata, skb, encrypt);
+ return count;
}
-void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
- u8 *ssid, size_t ssid_len)
+/*
+ * ieee80211_enable_ht should be called only after the operating band
+ * has been determined as ht configuration depends on the hw's
+ * HT abilities for a specific band.
+ */
+static u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_ht_info *hti,
+ u16 ap_ht_cap_flags)
{
struct ieee80211_local *local = sdata->local;
struct ieee80211_supported_band *sband;
- struct sk_buff *skb;
- struct ieee80211_mgmt *mgmt;
- u8 *pos, *supp_rates, *esupp_rates = NULL;
- int i;
-
- skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200);
- if (!skb) {
- printk(KERN_DEBUG "%s: failed to allocate buffer for probe "
- "request\n", sdata->dev->name);
- return;
- }
- skb_reserve(skb, local->hw.extra_tx_headroom);
-
- mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
- memset(mgmt, 0, 24);
- mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
- IEEE80211_STYPE_PROBE_REQ);
- memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
- if (dst) {
- memcpy(mgmt->da, dst, ETH_ALEN);
- memcpy(mgmt->bssid, dst, ETH_ALEN);
- } else {
- memset(mgmt->da, 0xff, ETH_ALEN);
- memset(mgmt->bssid, 0xff, ETH_ALEN);
- }
- pos = skb_put(skb, 2 + ssid_len);
- *pos++ = WLAN_EID_SSID;
- *pos++ = ssid_len;
- memcpy(pos, ssid, ssid_len);
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ struct ieee80211_bss_ht_conf ht;
+ struct sta_info *sta;
+ u32 changed = 0;
+ bool enable_ht = true, ht_changed;
+ enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
- supp_rates = skb_put(skb, 2);
- supp_rates[0] = WLAN_EID_SUPP_RATES;
- supp_rates[1] = 0;
sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
- for (i = 0; i < sband->n_bitrates; i++) {
- struct ieee80211_rate *rate = &sband->bitrates[i];
- if (esupp_rates) {
- pos = skb_put(skb, 1);
- esupp_rates[1]++;
- } else if (supp_rates[1] == 8) {
- esupp_rates = skb_put(skb, 3);
- esupp_rates[0] = WLAN_EID_EXT_SUPP_RATES;
- esupp_rates[1] = 1;
- pos = &esupp_rates[2];
- } else {
- pos = skb_put(skb, 1);
- supp_rates[1]++;
- }
- *pos = rate->bitrate / 5;
- }
-
- ieee80211_sta_tx(sdata, skb, 0);
-}
-
-/* MLME */
-static void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_sta_bss *bss,
- int ibss)
-{
- struct ieee80211_local *local = sdata->local;
- int i, have_higher_than_11mbit = 0;
-
-
- /* cf. IEEE 802.11 9.2.12 */
- for (i = 0; i < bss->supp_rates_len; i++)
- if ((bss->supp_rates[i] & 0x7f) * 5 > 110)
- have_higher_than_11mbit = 1;
-
- if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ &&
- have_higher_than_11mbit)
- sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE;
- else
- sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE;
-
-
- if (local->ops->conf_tx) {
- struct ieee80211_tx_queue_params qparam;
+ memset(&ht, 0, sizeof(ht));
- memset(&qparam, 0, sizeof(qparam));
-
- qparam.aifs = 2;
-
- if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ &&
- !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE))
- qparam.cw_min = 31;
- else
- qparam.cw_min = 15;
+ /* HT is not supported */
+ if (!sband->ht_cap.ht_supported)
+ enable_ht = false;
- qparam.cw_max = 1023;
- qparam.txop = 0;
-
- for (i = 0; i < local_to_hw(local)->queues; i++)
- local->ops->conf_tx(local_to_hw(local), i, &qparam);
- }
-}
-
-static void ieee80211_sta_wmm_params(struct ieee80211_local *local,
- struct ieee80211_if_sta *ifsta,
- u8 *wmm_param, size_t wmm_param_len)
-{
- struct ieee80211_tx_queue_params params;
- size_t left;
- int count;
- u8 *pos;
+ /* check that channel matches the right operating channel */
+ if (local->hw.conf.channel->center_freq !=
+ ieee80211_channel_to_frequency(hti->control_chan))
+ enable_ht = false;
- if (!(ifsta->flags & IEEE80211_STA_WMM_ENABLED))
- return;
-
- if (!wmm_param)
- return;
-
- if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1)
- return;
- count = wmm_param[6] & 0x0f;
- if (count == ifsta->wmm_last_param_set)
- return;
- ifsta->wmm_last_param_set = count;
-
- pos = wmm_param + 8;
- left = wmm_param_len - 8;
-
- memset(¶ms, 0, sizeof(params));
-
- if (!local->ops->conf_tx)
- return;
-
- local->wmm_acm = 0;
- for (; left >= 4; left -= 4, pos += 4) {
- int aci = (pos[0] >> 5) & 0x03;
- int acm = (pos[0] >> 4) & 0x01;
- int queue;
+ if (enable_ht) {
+ channel_type = NL80211_CHAN_HT20;
- switch (aci) {
- case 1:
- queue = 3;
- if (acm)
- local->wmm_acm |= BIT(0) | BIT(3);
- break;
- case 2:
- queue = 1;
- if (acm)
- local->wmm_acm |= BIT(4) | BIT(5);
- break;
- case 3:
- queue = 0;
- if (acm)
- local->wmm_acm |= BIT(6) | BIT(7);
- break;
- case 0:
- default:
- queue = 2;
- if (acm)
- local->wmm_acm |= BIT(1) | BIT(2);
- break;
- }
-
- params.aifs = pos[0] & 0x0f;
- params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4);
- params.cw_min = ecw2cw(pos[1] & 0x0f);
- params.txop = get_unaligned_le16(pos + 2);
-#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
- printk(KERN_DEBUG "%s: WMM queue=%d aci=%d acm=%d aifs=%d "
- "cWmin=%d cWmax=%d txop=%d\n",
- local->mdev->name, queue, aci, acm, params.aifs, params.cw_min,
- params.cw_max, params.txop);
-#endif
- /* TODO: handle ACM (block TX, fallback to next lowest allowed
- * AC for now) */
- if (local->ops->conf_tx(local_to_hw(local), queue, ¶ms)) {
- printk(KERN_DEBUG "%s: failed to set TX queue "
- "parameters for queue %d\n", local->mdev->name, queue);
- }
- }
-}
-
-static u32 ieee80211_handle_protect_preamb(struct ieee80211_sub_if_data *sdata,
- bool use_protection,
- bool use_short_preamble)
-{
- struct ieee80211_bss_conf *bss_conf = &sdata->bss_conf;
-#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
- struct ieee80211_if_sta *ifsta = &sdata->u.sta;
- DECLARE_MAC_BUF(mac);
-#endif
- u32 changed = 0;
-
- if (use_protection != bss_conf->use_cts_prot) {
-#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
- if (net_ratelimit()) {
- printk(KERN_DEBUG "%s: CTS protection %s (BSSID="
- "%s)\n",
- sdata->dev->name,
- use_protection ? "enabled" : "disabled",
- print_mac(mac, ifsta->bssid));
- }
-#endif
- bss_conf->use_cts_prot = use_protection;
- changed |= BSS_CHANGED_ERP_CTS_PROT;
- }
-
- if (use_short_preamble != bss_conf->use_short_preamble) {
-#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
- if (net_ratelimit()) {
- printk(KERN_DEBUG "%s: switched to %s barker preamble"
- " (BSSID=%s)\n",
- sdata->dev->name,
- use_short_preamble ? "short" : "long",
- print_mac(mac, ifsta->bssid));
+ if (!(ap_ht_cap_flags & IEEE80211_HT_CAP_40MHZ_INTOLERANT) &&
+ (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) &&
+ (hti->ht_param & IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)) {
+ switch(hti->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
+ case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
+ channel_type = NL80211_CHAN_HT40PLUS;
+ break;
+ case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
+ channel_type = NL80211_CHAN_HT40MINUS;
+ break;
+ }
}
-#endif
- bss_conf->use_short_preamble = use_short_preamble;
- changed |= BSS_CHANGED_ERP_PREAMBLE;
}
- return changed;
-}
+ ht_changed = conf_is_ht(&local->hw.conf) != enable_ht ||
+ channel_type != local->hw.conf.channel_type;
-static u32 ieee80211_handle_erp_ie(struct ieee80211_sub_if_data *sdata,
- u8 erp_value)
-{
- bool use_protection = (erp_value & WLAN_ERP_USE_PROTECTION) != 0;
- bool use_short_preamble = (erp_value & WLAN_ERP_BARKER_PREAMBLE) == 0;
+ local->oper_channel_type = channel_type;
- return ieee80211_handle_protect_preamb(sdata,
- use_protection, use_short_preamble);
-}
-
-static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_sta_bss *bss)
-{
- u32 changed = 0;
+ if (ht_changed) {
+ /* channel_type change automatically detected */
+ ieee80211_hw_config(local, 0);
- if (bss->has_erp_value)
- changed |= ieee80211_handle_erp_ie(sdata, bss->erp_value);
- else {
- u16 capab = bss->capability;
- changed |= ieee80211_handle_protect_preamb(sdata, false,
- (capab & WLAN_CAPABILITY_SHORT_PREAMBLE) != 0);
- }
-
- return changed;
-}
-
-int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap *ht_cap_ie,
- struct ieee80211_ht_info *ht_info)
-{
-
- if (ht_info == NULL)
- return -EINVAL;
-
- memset(ht_info, 0, sizeof(*ht_info));
-
- if (ht_cap_ie) {
- u8 ampdu_info = ht_cap_ie->ampdu_params_info;
-
- ht_info->ht_supported = 1;
- ht_info->cap = le16_to_cpu(ht_cap_ie->cap_info);
- ht_info->ampdu_factor =
- ampdu_info & IEEE80211_HT_CAP_AMPDU_FACTOR;
- ht_info->ampdu_density =
- (ampdu_info & IEEE80211_HT_CAP_AMPDU_DENSITY) >> 2;
- memcpy(ht_info->supp_mcs_set, ht_cap_ie->supp_mcs_set, 16);
- } else
- ht_info->ht_supported = 0;
-
- return 0;
-}
-
-int ieee80211_ht_addt_info_ie_to_ht_bss_info(
- struct ieee80211_ht_addt_info *ht_add_info_ie,
- struct ieee80211_ht_bss_info *bss_info)
-{
- if (bss_info == NULL)
- return -EINVAL;
-
- memset(bss_info, 0, sizeof(*bss_info));
-
- if (ht_add_info_ie) {
- u16 op_mode;
- op_mode = le16_to_cpu(ht_add_info_ie->operation_mode);
-
- bss_info->primary_channel = ht_add_info_ie->control_chan;
- bss_info->bss_cap = ht_add_info_ie->ht_param;
- bss_info->bss_op_mode = (u8)(op_mode & 0xff);
- }
-
- return 0;
-}
-
-static void ieee80211_sta_send_apinfo(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_if_sta *ifsta)
-{
- union iwreq_data wrqu;
- memset(&wrqu, 0, sizeof(wrqu));
- if (ifsta->flags & IEEE80211_STA_ASSOCIATED)
- memcpy(wrqu.ap_addr.sa_data, sdata->u.sta.bssid, ETH_ALEN);
- wrqu.ap_addr.sa_family = ARPHRD_ETHER;
- wireless_send_event(sdata->dev, SIOCGIWAP, &wrqu, NULL);
-}
-
-static void ieee80211_sta_send_associnfo(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_if_sta *ifsta)
-{
- union iwreq_data wrqu;
-
- if (ifsta->assocreq_ies) {
- memset(&wrqu, 0, sizeof(wrqu));
- wrqu.data.length = ifsta->assocreq_ies_len;
- wireless_send_event(sdata->dev, IWEVASSOCREQIE, &wrqu,
- ifsta->assocreq_ies);
- }
- if (ifsta->assocresp_ies) {
- memset(&wrqu, 0, sizeof(wrqu));
- wrqu.data.length = ifsta->assocresp_ies_len;
- wireless_send_event(sdata->dev, IWEVASSOCRESPIE, &wrqu,
- ifsta->assocresp_ies);
- }
-}
-
-
-static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_if_sta *ifsta)
-{
- struct ieee80211_local *local = sdata->local;
- struct ieee80211_conf *conf = &local_to_hw(local)->conf;
- u32 changed = BSS_CHANGED_ASSOC;
-
- struct ieee80211_sta_bss *bss;
-
- ifsta->flags |= IEEE80211_STA_ASSOCIATED;
-
- if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
- return;
-
- bss = ieee80211_rx_bss_get(local, ifsta->bssid,
- conf->channel->center_freq,
- ifsta->ssid, ifsta->ssid_len);
- if (bss) {
- /* set timing information */
- sdata->bss_conf.beacon_int = bss->beacon_int;
- sdata->bss_conf.timestamp = bss->timestamp;
- sdata->bss_conf.dtim_period = bss->dtim_period;
-
- changed |= ieee80211_handle_bss_capability(sdata, bss);
-
- ieee80211_rx_bss_put(local, bss);
- }
-
- if (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) {
- changed |= BSS_CHANGED_HT;
- sdata->bss_conf.assoc_ht = 1;
- sdata->bss_conf.ht_conf = &conf->ht_conf;
- sdata->bss_conf.ht_bss_conf = &conf->ht_bss_conf;
- }
-
- ifsta->flags |= IEEE80211_STA_PREV_BSSID_SET;
- memcpy(ifsta->prev_bssid, sdata->u.sta.bssid, ETH_ALEN);
- ieee80211_sta_send_associnfo(sdata, ifsta);
-
- ifsta->last_probe = jiffies;
- ieee80211_led_assoc(local, 1);
-
- sdata->bss_conf.assoc = 1;
- ieee80211_bss_info_change_notify(sdata, changed);
-
- netif_tx_start_all_queues(sdata->dev);
- netif_carrier_on(sdata->dev);
-
- ieee80211_sta_send_apinfo(sdata, ifsta);
-}
-
-static void ieee80211_direct_probe(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_if_sta *ifsta)
-{
- DECLARE_MAC_BUF(mac);
-
- ifsta->direct_probe_tries++;
- if (ifsta->direct_probe_tries > IEEE80211_AUTH_MAX_TRIES) {
- printk(KERN_DEBUG "%s: direct probe to AP %s timed out\n",
- sdata->dev->name, print_mac(mac, ifsta->bssid));
- ifsta->state = IEEE80211_STA_MLME_DISABLED;
- return;
- }
-
- printk(KERN_DEBUG "%s: direct probe to AP %s try %d\n",
- sdata->dev->name, print_mac(mac, ifsta->bssid),
- ifsta->direct_probe_tries);
-
- ifsta->state = IEEE80211_STA_MLME_DIRECT_PROBE;
-
- set_bit(IEEE80211_STA_REQ_DIRECT_PROBE, &ifsta->request);
-
- /* Direct probe is sent to broadcast address as some APs
- * will not answer to direct packet in unassociated state.
- */
- ieee80211_send_probe_req(sdata, NULL,
- ifsta->ssid, ifsta->ssid_len);
-
- mod_timer(&ifsta->timer, jiffies + IEEE80211_AUTH_TIMEOUT);
-}
-
-
-static void ieee80211_authenticate(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_if_sta *ifsta)
-{
- DECLARE_MAC_BUF(mac);
-
- ifsta->auth_tries++;
- if (ifsta->auth_tries > IEEE80211_AUTH_MAX_TRIES) {
- printk(KERN_DEBUG "%s: authentication with AP %s"
- " timed out\n",
- sdata->dev->name, print_mac(mac, ifsta->bssid));
- ifsta->state = IEEE80211_STA_MLME_DISABLED;
- return;
- }
-
- ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE;
- printk(KERN_DEBUG "%s: authenticate with AP %s\n",
- sdata->dev->name, print_mac(mac, ifsta->bssid));
+ rcu_read_lock();
- ieee80211_send_auth(sdata, ifsta, 1, NULL, 0, 0);
+ sta = sta_info_get(local, ifmgd->bssid);
+ if (sta)
+ rate_control_rate_update(local, sband, sta,
+ IEEE80211_RC_HT_CHANGED);
- mod_timer(&ifsta->timer, jiffies + IEEE80211_AUTH_TIMEOUT);
-}
+ rcu_read_unlock();
-static int ieee80211_compatible_rates(struct ieee80211_sta_bss *bss,
- struct ieee80211_supported_band *sband,
- u64 *rates)
-{
- int i, j, count;
- *rates = 0;
- count = 0;
- for (i = 0; i < bss->supp_rates_len; i++) {
- int rate = (bss->supp_rates[i] & 0x7F) * 5;
+ }
- for (j = 0; j < sband->n_bitrates; j++)
- if (sband->bitrates[j].bitrate == rate) {
- *rates |= BIT(j);
- count++;
- break;
- }
+ /* disable HT */
+ if (!enable_ht)
+ return 0;
+
+ ht.operation_mode = le16_to_cpu(hti->operation_mode);
+
+ /* if bss configuration changed store the new one */
+ if (memcmp(&sdata->vif.bss_conf.ht, &ht, sizeof(ht))) {
+ changed |= BSS_CHANGED_HT;
+ sdata->vif.bss_conf.ht = ht;
}
- return count;
+ return changed;
}
-static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_if_sta *ifsta)
+/* frame sending functions */
+
+static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
{
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
struct ieee80211_local *local = sdata->local;
struct sk_buff *skb;
struct ieee80211_mgmt *mgmt;
- u8 *pos, *ies, *ht_add_ie;
+ u8 *pos, *ies, *ht_ie;
int i, len, count, rates_len, supp_rates_len;
u16 capab;
- struct ieee80211_sta_bss *bss;
+ struct ieee80211_bss *bss;
int wmm = 0;
struct ieee80211_supported_band *sband;
- u64 rates = 0;
+ u32 rates = 0;
skb = dev_alloc_skb(local->hw.extra_tx_headroom +
- sizeof(*mgmt) + 200 + ifsta->extra_ie_len +
- ifsta->ssid_len);
+ sizeof(*mgmt) + 200 + ifmgd->extra_ie_len +
+ ifmgd->ssid_len);
if (!skb) {
printk(KERN_DEBUG "%s: failed to allocate buffer for assoc "
"frame\n", sdata->dev->name);
sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
- capab = ifsta->capab;
+ capab = ifmgd->capab;
if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ) {
if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
}
- bss = ieee80211_rx_bss_get(local, ifsta->bssid,
+ bss = ieee80211_rx_bss_get(local, ifmgd->bssid,
local->hw.conf.channel->center_freq,
- ifsta->ssid, ifsta->ssid_len);
+ ifmgd->ssid, ifmgd->ssid_len);
if (bss) {
- if (bss->capability & WLAN_CAPABILITY_PRIVACY)
+ if (bss->cbss.capability & WLAN_CAPABILITY_PRIVACY)
capab |= WLAN_CAPABILITY_PRIVACY;
if (bss->wmm_used)
wmm = 1;
* b-only mode) */
rates_len = ieee80211_compatible_rates(bss, sband, &rates);
- if ((bss->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) &&
+ if ((bss->cbss.capability & WLAN_CAPABILITY_SPECTRUM_MGMT) &&
(local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT))
capab |= WLAN_CAPABILITY_SPECTRUM_MGMT;
mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
memset(mgmt, 0, 24);
- memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
+ memcpy(mgmt->da, ifmgd->bssid, ETH_ALEN);
memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
- memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
+ memcpy(mgmt->bssid, ifmgd->bssid, ETH_ALEN);
- if (ifsta->flags & IEEE80211_STA_PREV_BSSID_SET) {
+ if (ifmgd->flags & IEEE80211_STA_PREV_BSSID_SET) {
skb_put(skb, 10);
mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
IEEE80211_STYPE_REASSOC_REQ);
mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab);
mgmt->u.reassoc_req.listen_interval =
cpu_to_le16(local->hw.conf.listen_interval);
- memcpy(mgmt->u.reassoc_req.current_ap, ifsta->prev_bssid,
+ memcpy(mgmt->u.reassoc_req.current_ap, ifmgd->prev_bssid,
ETH_ALEN);
} else {
skb_put(skb, 4);
mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
IEEE80211_STYPE_ASSOC_REQ);
mgmt->u.assoc_req.capab_info = cpu_to_le16(capab);
- mgmt->u.reassoc_req.listen_interval =
+ mgmt->u.assoc_req.listen_interval =
cpu_to_le16(local->hw.conf.listen_interval);
}
/* SSID */
- ies = pos = skb_put(skb, 2 + ifsta->ssid_len);
+ ies = pos = skb_put(skb, 2 + ifmgd->ssid_len);
*pos++ = WLAN_EID_SSID;
- *pos++ = ifsta->ssid_len;
- memcpy(pos, ifsta->ssid, ifsta->ssid_len);
+ *pos++ = ifmgd->ssid_len;
+ memcpy(pos, ifmgd->ssid, ifmgd->ssid_len);
/* add all rates which were marked to be used above */
supp_rates_len = rates_len;
}
}
- if (ifsta->extra_ie) {
- pos = skb_put(skb, ifsta->extra_ie_len);
- memcpy(pos, ifsta->extra_ie, ifsta->extra_ie_len);
+ if (ifmgd->extra_ie) {
+ pos = skb_put(skb, ifmgd->extra_ie_len);
+ memcpy(pos, ifmgd->extra_ie, ifmgd->extra_ie_len);
}
- if (wmm && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) {
+ if (wmm && (ifmgd->flags & IEEE80211_STA_WMM_ENABLED)) {
pos = skb_put(skb, 9);
*pos++ = WLAN_EID_VENDOR_SPECIFIC;
*pos++ = 7; /* len */
}
/* wmm support is a must to HT */
- if (wmm && (ifsta->flags & IEEE80211_STA_WMM_ENABLED) &&
- sband->ht_info.ht_supported &&
- (ht_add_ie = ieee80211_bss_get_ie(bss, WLAN_EID_HT_EXTRA_INFO))) {
- struct ieee80211_ht_addt_info *ht_add_info =
- (struct ieee80211_ht_addt_info *)ht_add_ie;
- u16 cap = sband->ht_info.cap;
+ /*
+ * IEEE802.11n does not allow TKIP/WEP as pairwise
+ * ciphers in HT mode. We still associate in non-ht
+ * mode (11a/b/g) if any one of these ciphers is
+ * configured as pairwise.
+ */
+ if (wmm && (ifmgd->flags & IEEE80211_STA_WMM_ENABLED) &&
+ sband->ht_cap.ht_supported &&
+ (ht_ie = ieee80211_bss_get_ie(bss, WLAN_EID_HT_INFORMATION)) &&
+ ht_ie[1] >= sizeof(struct ieee80211_ht_info) &&
+ (!(ifmgd->flags & IEEE80211_STA_TKIP_WEP_USED))) {
+ struct ieee80211_ht_info *ht_info =
+ (struct ieee80211_ht_info *)(ht_ie + 2);
+ u16 cap = sband->ht_cap.cap;
__le16 tmp;
u32 flags = local->hw.conf.channel->flags;
- switch (ht_add_info->ht_param & IEEE80211_HT_IE_CHA_SEC_OFFSET) {
- case IEEE80211_HT_IE_CHA_SEC_ABOVE:
+ switch (ht_info->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
+ case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
if (flags & IEEE80211_CHAN_NO_FAT_ABOVE) {
- cap &= ~IEEE80211_HT_CAP_SUP_WIDTH;
+ cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
cap &= ~IEEE80211_HT_CAP_SGI_40;
}
break;
- case IEEE80211_HT_IE_CHA_SEC_BELOW:
+ case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
if (flags & IEEE80211_CHAN_NO_FAT_BELOW) {
- cap &= ~IEEE80211_HT_CAP_SUP_WIDTH;
+ cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
cap &= ~IEEE80211_HT_CAP_SGI_40;
}
break;
memcpy(pos, &tmp, sizeof(u16));
pos += sizeof(u16);
/* TODO: needs a define here for << 2 */
- *pos++ = sband->ht_info.ampdu_factor |
- (sband->ht_info.ampdu_density << 2);
- memcpy(pos, sband->ht_info.supp_mcs_set, 16);
+ *pos++ = sband->ht_cap.ampdu_factor |
+ (sband->ht_cap.ampdu_density << 2);
+ memcpy(pos, &sband->ht_cap.mcs, sizeof(sband->ht_cap.mcs));
}
- kfree(ifsta->assocreq_ies);
- ifsta->assocreq_ies_len = (skb->data + skb->len) - ies;
- ifsta->assocreq_ies = kmalloc(ifsta->assocreq_ies_len, GFP_KERNEL);
- if (ifsta->assocreq_ies)
- memcpy(ifsta->assocreq_ies, ies, ifsta->assocreq_ies_len);
+ kfree(ifmgd->assocreq_ies);
+ ifmgd->assocreq_ies_len = (skb->data + skb->len) - ies;
+ ifmgd->assocreq_ies = kmalloc(ifmgd->assocreq_ies_len, GFP_KERNEL);
+ if (ifmgd->assocreq_ies)
+ memcpy(ifmgd->assocreq_ies, ies, ifmgd->assocreq_ies_len);
- ieee80211_sta_tx(sdata, skb, 0);
+ ieee80211_tx_skb(sdata, skb, 0);
}
-static void ieee80211_send_deauth(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_if_sta *ifsta, u16 reason)
+static void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
+ u16 stype, u16 reason)
{
struct ieee80211_local *local = sdata->local;
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
struct sk_buff *skb;
struct ieee80211_mgmt *mgmt;
skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt));
if (!skb) {
- printk(KERN_DEBUG "%s: failed to allocate buffer for deauth "
- "frame\n", sdata->dev->name);
+ printk(KERN_DEBUG "%s: failed to allocate buffer for "
+ "deauth/disassoc frame\n", sdata->dev->name);
return;
}
skb_reserve(skb, local->hw.extra_tx_headroom);
mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
memset(mgmt, 0, 24);
- memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
+ memcpy(mgmt->da, ifmgd->bssid, ETH_ALEN);
memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
- memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
- mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
- IEEE80211_STYPE_DEAUTH);
+ memcpy(mgmt->bssid, ifmgd->bssid, ETH_ALEN);
+ mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype);
skb_put(skb, 2);
+ /* u.deauth.reason_code == u.disassoc.reason_code */
mgmt->u.deauth.reason_code = cpu_to_le16(reason);
- ieee80211_sta_tx(sdata, skb, 0);
-}
-
-static int ieee80211_sta_wep_configured(struct ieee80211_sub_if_data *sdata)
-{
- if (!sdata || !sdata->default_key ||
- sdata->default_key->conf.alg != ALG_WEP)
- return 0;
- return 1;
+ if (stype == IEEE80211_STYPE_DEAUTH)
+ cfg80211_send_deauth(sdata->dev, (u8 *) mgmt, skb->len);
+ else
+ cfg80211_send_disassoc(sdata->dev, (u8 *) mgmt, skb->len);
+ ieee80211_tx_skb(sdata, skb, ifmgd->flags & IEEE80211_STA_MFP_ENABLED);
}
-static void ieee80211_send_disassoc(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_if_sta *ifsta, u16 reason)
+void ieee80211_send_pspoll(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata)
{
- struct ieee80211_local *local = sdata->local;
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ struct ieee80211_pspoll *pspoll;
struct sk_buff *skb;
- struct ieee80211_mgmt *mgmt;
+ u16 fc;
- skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt));
+ skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*pspoll));
if (!skb) {
- printk(KERN_DEBUG "%s: failed to allocate buffer for disassoc "
- "frame\n", sdata->dev->name);
+ printk(KERN_DEBUG "%s: failed to allocate buffer for "
+ "pspoll frame\n", sdata->dev->name);
return;
}
skb_reserve(skb, local->hw.extra_tx_headroom);
- mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
- memset(mgmt, 0, 24);
- memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
- memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
- memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
- mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
- IEEE80211_STYPE_DISASSOC);
- skb_put(skb, 2);
- mgmt->u.disassoc.reason_code = cpu_to_le16(reason);
+ pspoll = (struct ieee80211_pspoll *) skb_put(skb, sizeof(*pspoll));
+ memset(pspoll, 0, sizeof(*pspoll));
+ fc = IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL | IEEE80211_FCTL_PM;
+ pspoll->frame_control = cpu_to_le16(fc);
+ pspoll->aid = cpu_to_le16(ifmgd->aid);
+
+ /* aid in PS-Poll has its two MSBs each set to 1 */
+ pspoll->aid |= cpu_to_le16(1 << 15 | 1 << 14);
+
+ memcpy(pspoll->bssid, ifmgd->bssid, ETH_ALEN);
+ memcpy(pspoll->ta, sdata->dev->dev_addr, ETH_ALEN);
- ieee80211_sta_tx(sdata, skb, 0);
+ ieee80211_tx_skb(sdata, skb, 0);
}
-static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_if_sta *ifsta, bool deauth,
- bool self_disconnected, u16 reason)
+/* MLME */
+static void ieee80211_sta_wmm_params(struct ieee80211_local *local,
+ struct ieee80211_if_managed *ifmgd,
+ u8 *wmm_param, size_t wmm_param_len)
{
- struct ieee80211_local *local = sdata->local;
- struct sta_info *sta;
- u32 changed = BSS_CHANGED_ASSOC;
+ struct ieee80211_tx_queue_params params;
+ size_t left;
+ int count;
+ u8 *pos;
- rcu_read_lock();
+ if (!(ifmgd->flags & IEEE80211_STA_WMM_ENABLED))
+ return;
- sta = sta_info_get(local, ifsta->bssid);
- if (!sta) {
- rcu_read_unlock();
+ if (!wmm_param)
return;
- }
- if (deauth) {
- ifsta->direct_probe_tries = 0;
- ifsta->auth_tries = 0;
- }
- ifsta->assoc_scan_tries = 0;
- ifsta->assoc_tries = 0;
+ if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1)
+ return;
+ count = wmm_param[6] & 0x0f;
+ if (count == ifmgd->wmm_last_param_set)
+ return;
+ ifmgd->wmm_last_param_set = count;
- netif_tx_stop_all_queues(sdata->dev);
- netif_carrier_off(sdata->dev);
+ pos = wmm_param + 8;
+ left = wmm_param_len - 8;
- ieee80211_sta_tear_down_BA_sessions(sdata, sta->addr);
+ memset(¶ms, 0, sizeof(params));
- if (self_disconnected) {
- if (deauth)
- ieee80211_send_deauth(sdata, ifsta, reason);
- else
- ieee80211_send_disassoc(sdata, ifsta, reason);
- }
+ local->wmm_acm = 0;
+ for (; left >= 4; left -= 4, pos += 4) {
+ int aci = (pos[0] >> 5) & 0x03;
+ int acm = (pos[0] >> 4) & 0x01;
+ int queue;
- ifsta->flags &= ~IEEE80211_STA_ASSOCIATED;
- changed |= ieee80211_reset_erp_info(sdata);
+ switch (aci) {
+ case 1: /* AC_BK */
+ queue = 3;
+ if (acm)
+ local->wmm_acm |= BIT(1) | BIT(2); /* BK/- */
+ break;
+ case 2: /* AC_VI */
+ queue = 1;
+ if (acm)
+ local->wmm_acm |= BIT(4) | BIT(5); /* CL/VI */
+ break;
+ case 3: /* AC_VO */
+ queue = 0;
+ if (acm)
+ local->wmm_acm |= BIT(6) | BIT(7); /* VO/NC */
+ break;
+ case 0: /* AC_BE */
+ default:
+ queue = 2;
+ if (acm)
+ local->wmm_acm |= BIT(0) | BIT(3); /* BE/EE */
+ break;
+ }
- if (sdata->bss_conf.assoc_ht)
- changed |= BSS_CHANGED_HT;
+ params.aifs = pos[0] & 0x0f;
+ params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4);
+ params.cw_min = ecw2cw(pos[1] & 0x0f);
+ params.txop = get_unaligned_le16(pos + 2);
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+ printk(KERN_DEBUG "%s: WMM queue=%d aci=%d acm=%d aifs=%d "
+ "cWmin=%d cWmax=%d txop=%d\n",
+ local->mdev->name, queue, aci, acm, params.aifs, params.cw_min,
+ params.cw_max, params.txop);
+#endif
+ if (local->ops->conf_tx &&
+ local->ops->conf_tx(local_to_hw(local), queue, ¶ms)) {
+ printk(KERN_DEBUG "%s: failed to set TX queue "
+ "parameters for queue %d\n", local->mdev->name, queue);
+ }
+ }
+}
- sdata->bss_conf.assoc_ht = 0;
- sdata->bss_conf.ht_conf = NULL;
- sdata->bss_conf.ht_bss_conf = NULL;
+static bool ieee80211_check_tim(struct ieee802_11_elems *elems, u16 aid)
+{
+ u8 mask;
+ u8 index, indexn1, indexn2;
+ struct ieee80211_tim_ie *tim = (struct ieee80211_tim_ie *) elems->tim;
- ieee80211_led_assoc(local, 0);
- sdata->bss_conf.assoc = 0;
+ if (unlikely(!tim || elems->tim_len < 4))
+ return false;
- ieee80211_sta_send_apinfo(sdata, ifsta);
+ aid &= 0x3fff;
+ index = aid / 8;
+ mask = 1 << (aid & 7);
- if (self_disconnected)
- ifsta->state = IEEE80211_STA_MLME_DISABLED;
+ indexn1 = tim->bitmap_ctrl & 0xfe;
+ indexn2 = elems->tim_len + indexn1 - 4;
- sta_info_unlink(&sta);
+ if (index < indexn1 || index > indexn2)
+ return false;
- rcu_read_unlock();
+ index -= indexn1;
- sta_info_destroy(sta);
+ return !!(tim->virtual_map[index] & mask);
}
-static int ieee80211_privacy_mismatch(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_if_sta *ifsta)
+static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata,
+ u16 capab, bool erp_valid, u8 erp)
{
- struct ieee80211_local *local = sdata->local;
- struct ieee80211_sta_bss *bss;
- int bss_privacy;
- int wep_privacy;
- int privacy_invoked;
+ struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+#endif
+ u32 changed = 0;
+ bool use_protection;
+ bool use_short_preamble;
+ bool use_short_slot;
- if (!ifsta || (ifsta->flags & IEEE80211_STA_MIXED_CELL))
- return 0;
+ if (erp_valid) {
+ use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0;
+ use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0;
+ } else {
+ use_protection = false;
+ use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE);
+ }
- bss = ieee80211_rx_bss_get(local, ifsta->bssid,
- local->hw.conf.channel->center_freq,
- ifsta->ssid, ifsta->ssid_len);
- if (!bss)
- return 0;
+ use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME);
- bss_privacy = !!(bss->capability & WLAN_CAPABILITY_PRIVACY);
- wep_privacy = !!ieee80211_sta_wep_configured(sdata);
- privacy_invoked = !!(ifsta->flags & IEEE80211_STA_PRIVACY_INVOKED);
+ if (use_protection != bss_conf->use_cts_prot) {
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+ if (net_ratelimit()) {
+ printk(KERN_DEBUG "%s: CTS protection %s (BSSID=%pM)\n",
+ sdata->dev->name,
+ use_protection ? "enabled" : "disabled",
+ ifmgd->bssid);
+ }
+#endif
+ bss_conf->use_cts_prot = use_protection;
+ changed |= BSS_CHANGED_ERP_CTS_PROT;
+ }
- ieee80211_rx_bss_put(local, bss);
+ if (use_short_preamble != bss_conf->use_short_preamble) {
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+ if (net_ratelimit()) {
+ printk(KERN_DEBUG "%s: switched to %s barker preamble"
+ " (BSSID=%pM)\n",
+ sdata->dev->name,
+ use_short_preamble ? "short" : "long",
+ ifmgd->bssid);
+ }
+#endif
+ bss_conf->use_short_preamble = use_short_preamble;
+ changed |= BSS_CHANGED_ERP_PREAMBLE;
+ }
- if ((bss_privacy == wep_privacy) || (bss_privacy == privacy_invoked))
- return 0;
+ if (use_short_slot != bss_conf->use_short_slot) {
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+ if (net_ratelimit()) {
+ printk(KERN_DEBUG "%s: switched to %s slot time"
+ " (BSSID=%pM)\n",
+ sdata->dev->name,
+ use_short_slot ? "short" : "long",
+ ifmgd->bssid);
+ }
+#endif
+ bss_conf->use_short_slot = use_short_slot;
+ changed |= BSS_CHANGED_ERP_SLOT;
+ }
- return 1;
+ return changed;
}
-static void ieee80211_associate(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_if_sta *ifsta)
+static void ieee80211_sta_send_apinfo(struct ieee80211_sub_if_data *sdata)
{
- DECLARE_MAC_BUF(mac);
+ union iwreq_data wrqu;
- ifsta->assoc_tries++;
- if (ifsta->assoc_tries > IEEE80211_ASSOC_MAX_TRIES) {
- printk(KERN_DEBUG "%s: association with AP %s"
- " timed out\n",
- sdata->dev->name, print_mac(mac, ifsta->bssid));
- ifsta->state = IEEE80211_STA_MLME_DISABLED;
+ memset(&wrqu, 0, sizeof(wrqu));
+ if (sdata->u.mgd.flags & IEEE80211_STA_ASSOCIATED)
+ memcpy(wrqu.ap_addr.sa_data, sdata->u.mgd.bssid, ETH_ALEN);
+ wrqu.ap_addr.sa_family = ARPHRD_ETHER;
+ wireless_send_event(sdata->dev, SIOCGIWAP, &wrqu, NULL);
+}
+
+static void ieee80211_sta_send_associnfo(struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ char *buf;
+ size_t len;
+ int i;
+ union iwreq_data wrqu;
+
+ if (!ifmgd->assocreq_ies && !ifmgd->assocresp_ies)
return;
- }
- ifsta->state = IEEE80211_STA_MLME_ASSOCIATE;
- printk(KERN_DEBUG "%s: associate with AP %s\n",
- sdata->dev->name, print_mac(mac, ifsta->bssid));
- if (ieee80211_privacy_mismatch(sdata, ifsta)) {
- printk(KERN_DEBUG "%s: mismatch in privacy configuration and "
- "mixed-cell disabled - abort association\n", sdata->dev->name);
- ifsta->state = IEEE80211_STA_MLME_DISABLED;
+ buf = kmalloc(50 + 2 * (ifmgd->assocreq_ies_len +
+ ifmgd->assocresp_ies_len), GFP_KERNEL);
+ if (!buf)
return;
+
+ len = sprintf(buf, "ASSOCINFO(");
+ if (ifmgd->assocreq_ies) {
+ len += sprintf(buf + len, "ReqIEs=");
+ for (i = 0; i < ifmgd->assocreq_ies_len; i++) {
+ len += sprintf(buf + len, "%02x",
+ ifmgd->assocreq_ies[i]);
+ }
+ }
+ if (ifmgd->assocresp_ies) {
+ if (ifmgd->assocreq_ies)
+ len += sprintf(buf + len, " ");
+ len += sprintf(buf + len, "RespIEs=");
+ for (i = 0; i < ifmgd->assocresp_ies_len; i++) {
+ len += sprintf(buf + len, "%02x",
+ ifmgd->assocresp_ies[i]);
+ }
+ }
+ len += sprintf(buf + len, ")");
+
+ if (len > IW_CUSTOM_MAX) {
+ len = sprintf(buf, "ASSOCRESPIE=");
+ for (i = 0; i < ifmgd->assocresp_ies_len; i++) {
+ len += sprintf(buf + len, "%02x",
+ ifmgd->assocresp_ies[i]);
+ }
}
- ieee80211_send_assoc(sdata, ifsta);
+ if (len <= IW_CUSTOM_MAX) {
+ memset(&wrqu, 0, sizeof(wrqu));
+ wrqu.data.length = len;
+ wireless_send_event(sdata->dev, IWEVCUSTOM, &wrqu, buf);
+ }
- mod_timer(&ifsta->timer, jiffies + IEEE80211_ASSOC_TIMEOUT);
+ kfree(buf);
}
-static void ieee80211_associated(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_if_sta *ifsta)
+static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
+ u32 bss_info_changed)
{
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
struct ieee80211_local *local = sdata->local;
- struct sta_info *sta;
- int disassoc;
- DECLARE_MAC_BUF(mac);
+ struct ieee80211_conf *conf = &local_to_hw(local)->conf;
- /* TODO: start monitoring current AP signal quality and number of
- * missed beacons. Scan other channels every now and then and search
- * for better APs. */
- /* TODO: remove expired BSSes */
+ struct ieee80211_bss *bss;
- ifsta->state = IEEE80211_STA_MLME_ASSOCIATED;
+ bss_info_changed |= BSS_CHANGED_ASSOC;
+ ifmgd->flags |= IEEE80211_STA_ASSOCIATED;
- rcu_read_lock();
+ bss = ieee80211_rx_bss_get(local, ifmgd->bssid,
+ conf->channel->center_freq,
+ ifmgd->ssid, ifmgd->ssid_len);
+ if (bss) {
+ /* set timing information */
+ sdata->vif.bss_conf.beacon_int = bss->cbss.beacon_interval;
+ sdata->vif.bss_conf.timestamp = bss->cbss.tsf;
+ sdata->vif.bss_conf.dtim_period = bss->dtim_period;
- sta = sta_info_get(local, ifsta->bssid);
- if (!sta) {
- printk(KERN_DEBUG "%s: No STA entry for own AP %s\n",
- sdata->dev->name, print_mac(mac, ifsta->bssid));
- disassoc = 1;
- } else {
- disassoc = 0;
- if (time_after(jiffies,
- sta->last_rx + IEEE80211_MONITORING_INTERVAL)) {
- if (ifsta->flags & IEEE80211_STA_PROBEREQ_POLL) {
- printk(KERN_DEBUG "%s: No ProbeResp from "
- "current AP %s - assume out of "
- "range\n",
- sdata->dev->name, print_mac(mac, ifsta->bssid));
- disassoc = 1;
- } else
- ieee80211_send_probe_req(sdata, ifsta->bssid,
- local->scan_ssid,
- local->scan_ssid_len);
- ifsta->flags ^= IEEE80211_STA_PROBEREQ_POLL;
- } else {
- ifsta->flags &= ~IEEE80211_STA_PROBEREQ_POLL;
- if (time_after(jiffies, ifsta->last_probe +
- IEEE80211_PROBE_INTERVAL)) {
- ifsta->last_probe = jiffies;
- ieee80211_send_probe_req(sdata, ifsta->bssid,
- ifsta->ssid,
- ifsta->ssid_len);
- }
- }
- }
+ bss_info_changed |= ieee80211_handle_bss_capability(sdata,
+ bss->cbss.capability, bss->has_erp_value, bss->erp_value);
- rcu_read_unlock();
+ cfg80211_hold_bss(&bss->cbss);
- if (disassoc)
- ieee80211_set_disassoc(sdata, ifsta, true, true,
- WLAN_REASON_PREV_AUTH_NOT_VALID);
- else
- mod_timer(&ifsta->timer, jiffies +
- IEEE80211_MONITORING_INTERVAL);
-}
+ ieee80211_rx_bss_put(local, bss);
+ }
+ ifmgd->flags |= IEEE80211_STA_PREV_BSSID_SET;
+ memcpy(ifmgd->prev_bssid, sdata->u.mgd.bssid, ETH_ALEN);
+ ieee80211_sta_send_associnfo(sdata);
-static void ieee80211_auth_completed(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_if_sta *ifsta)
-{
- printk(KERN_DEBUG "%s: authenticated\n", sdata->dev->name);
- ifsta->flags |= IEEE80211_STA_AUTHENTICATED;
- ieee80211_associate(sdata, ifsta);
-}
+ ifmgd->last_probe = jiffies;
+ ieee80211_led_assoc(local, 1);
+ sdata->vif.bss_conf.assoc = 1;
+ /*
+ * For now just always ask the driver to update the basic rateset
+ * when we have associated, we aren't checking whether it actually
+ * changed or not.
+ */
+ bss_info_changed |= BSS_CHANGED_BASIC_RATES;
+ ieee80211_bss_info_change_notify(sdata, bss_info_changed);
+
+ if (local->powersave) {
+ if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS) &&
+ local->hw.conf.dynamic_ps_timeout > 0) {
+ mod_timer(&local->dynamic_ps_timer, jiffies +
+ msecs_to_jiffies(
+ local->hw.conf.dynamic_ps_timeout));
+ } else {
+ if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
+ ieee80211_send_nullfunc(local, sdata, 1);
+ conf->flags |= IEEE80211_CONF_PS;
+ ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
+ }
+ }
-static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_if_sta *ifsta,
- struct ieee80211_mgmt *mgmt,
- size_t len)
-{
- u8 *pos;
- struct ieee802_11_elems elems;
+ netif_tx_start_all_queues(sdata->dev);
+ netif_carrier_on(sdata->dev);
- pos = mgmt->u.auth.variable;
- ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems);
- if (!elems.challenge)
- return;
- ieee80211_send_auth(sdata, ifsta, 3, elems.challenge - 2,
- elems.challenge_len + 2, 1);
+ ieee80211_sta_send_apinfo(sdata);
}
-static void ieee80211_send_addba_resp(struct ieee80211_sub_if_data *sdata, u8 *da, u16 tid,
- u8 dialog_token, u16 status, u16 policy,
- u16 buf_size, u16 timeout)
+static void ieee80211_direct_probe(struct ieee80211_sub_if_data *sdata)
{
- struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
struct ieee80211_local *local = sdata->local;
- struct sk_buff *skb;
- struct ieee80211_mgmt *mgmt;
- u16 capab;
- skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom);
+ ifmgd->direct_probe_tries++;
+ if (ifmgd->direct_probe_tries > IEEE80211_AUTH_MAX_TRIES) {
+ printk(KERN_DEBUG "%s: direct probe to AP %pM timed out\n",
+ sdata->dev->name, ifmgd->bssid);
+ ifmgd->state = IEEE80211_STA_MLME_DISABLED;
+ ieee80211_sta_send_apinfo(sdata);
- if (!skb) {
- printk(KERN_DEBUG "%s: failed to allocate buffer "
- "for addba resp frame\n", sdata->dev->name);
+ /*
+ * Most likely AP is not in the range so remove the
+ * bss information associated to the AP
+ */
+ ieee80211_rx_bss_remove(sdata, ifmgd->bssid,
+ sdata->local->hw.conf.channel->center_freq,
+ ifmgd->ssid, ifmgd->ssid_len);
+
+ /*
+ * We might have a pending scan which had no chance to run yet
+ * due to state == IEEE80211_STA_MLME_DIRECT_PROBE.
+ * Hence, queue the STAs work again
+ */
+ queue_work(local->hw.workqueue, &ifmgd->work);
return;
}
- skb_reserve(skb, local->hw.extra_tx_headroom);
- mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
- memset(mgmt, 0, 24);
- memcpy(mgmt->da, da, ETH_ALEN);
- memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
- if (sdata->vif.type == IEEE80211_IF_TYPE_AP)
- memcpy(mgmt->bssid, sdata->dev->dev_addr, ETH_ALEN);
- else
- memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
- mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
- IEEE80211_STYPE_ACTION);
-
- skb_put(skb, 1 + sizeof(mgmt->u.action.u.addba_resp));
- mgmt->u.action.category = WLAN_CATEGORY_BACK;
- mgmt->u.action.u.addba_resp.action_code = WLAN_ACTION_ADDBA_RESP;
- mgmt->u.action.u.addba_resp.dialog_token = dialog_token;
+ printk(KERN_DEBUG "%s: direct probe to AP %pM try %d\n",
+ sdata->dev->name, ifmgd->bssid,
+ ifmgd->direct_probe_tries);
- capab = (u16)(policy << 1); /* bit 1 aggregation policy */
- capab |= (u16)(tid << 2); /* bit 5:2 TID number */
- capab |= (u16)(buf_size << 6); /* bit 15:6 max size of aggregation */
+ ifmgd->state = IEEE80211_STA_MLME_DIRECT_PROBE;
- mgmt->u.action.u.addba_resp.capab = cpu_to_le16(capab);
- mgmt->u.action.u.addba_resp.timeout = cpu_to_le16(timeout);
- mgmt->u.action.u.addba_resp.status = cpu_to_le16(status);
+ set_bit(IEEE80211_STA_REQ_DIRECT_PROBE, &ifmgd->request);
- ieee80211_sta_tx(sdata, skb, 0);
+ /* Direct probe is sent to broadcast address as some APs
+ * will not answer to direct packet in unassociated state.
+ */
+ ieee80211_send_probe_req(sdata, NULL,
+ ifmgd->ssid, ifmgd->ssid_len, NULL, 0);
- return;
+ mod_timer(&ifmgd->timer, jiffies + IEEE80211_AUTH_TIMEOUT);
}
-void ieee80211_send_addba_request(struct ieee80211_sub_if_data *sdata, const u8 *da,
- u16 tid, u8 dialog_token, u16 start_seq_num,
- u16 agg_size, u16 timeout)
-{
- struct ieee80211_local *local = sdata->local;
- struct ieee80211_if_sta *ifsta = &sdata->u.sta;
- struct sk_buff *skb;
- struct ieee80211_mgmt *mgmt;
- u16 capab;
-
- skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom);
-
- if (!skb) {
- printk(KERN_ERR "%s: failed to allocate buffer "
- "for addba request frame\n", sdata->dev->name);
- return;
- }
- skb_reserve(skb, local->hw.extra_tx_headroom);
- mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
- memset(mgmt, 0, 24);
- memcpy(mgmt->da, da, ETH_ALEN);
- memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
- if (sdata->vif.type == IEEE80211_IF_TYPE_AP)
- memcpy(mgmt->bssid, sdata->dev->dev_addr, ETH_ALEN);
- else
- memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
-
- mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
- IEEE80211_STYPE_ACTION);
- skb_put(skb, 1 + sizeof(mgmt->u.action.u.addba_req));
+static void ieee80211_authenticate(struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ struct ieee80211_local *local = sdata->local;
+ u8 *ies;
+ size_t ies_len;
- mgmt->u.action.category = WLAN_CATEGORY_BACK;
- mgmt->u.action.u.addba_req.action_code = WLAN_ACTION_ADDBA_REQ;
+ ifmgd->auth_tries++;
+ if (ifmgd->auth_tries > IEEE80211_AUTH_MAX_TRIES) {
+ printk(KERN_DEBUG "%s: authentication with AP %pM"
+ " timed out\n",
+ sdata->dev->name, ifmgd->bssid);
+ ifmgd->state = IEEE80211_STA_MLME_DISABLED;
+ ieee80211_sta_send_apinfo(sdata);
+ ieee80211_rx_bss_remove(sdata, ifmgd->bssid,
+ sdata->local->hw.conf.channel->center_freq,
+ ifmgd->ssid, ifmgd->ssid_len);
- mgmt->u.action.u.addba_req.dialog_token = dialog_token;
- capab = (u16)(1 << 1); /* bit 1 aggregation policy */
- capab |= (u16)(tid << 2); /* bit 5:2 TID number */
- capab |= (u16)(agg_size << 6); /* bit 15:6 max size of aggergation */
+ /*
+ * We might have a pending scan which had no chance to run yet
+ * due to state == IEEE80211_STA_MLME_AUTHENTICATE.
+ * Hence, queue the STAs work again
+ */
+ queue_work(local->hw.workqueue, &ifmgd->work);
+ return;
+ }
- mgmt->u.action.u.addba_req.capab = cpu_to_le16(capab);
+ ifmgd->state = IEEE80211_STA_MLME_AUTHENTICATE;
+ printk(KERN_DEBUG "%s: authenticate with AP %pM\n",
+ sdata->dev->name, ifmgd->bssid);
- mgmt->u.action.u.addba_req.timeout = cpu_to_le16(timeout);
- mgmt->u.action.u.addba_req.start_seq_num =
- cpu_to_le16(start_seq_num << 4);
+ if (ifmgd->flags & IEEE80211_STA_EXT_SME) {
+ ies = ifmgd->sme_auth_ie;
+ ies_len = ifmgd->sme_auth_ie_len;
+ } else {
+ ies = NULL;
+ ies_len = 0;
+ }
+ ieee80211_send_auth(sdata, 1, ifmgd->auth_alg, ies, ies_len,
+ ifmgd->bssid, 0);
+ ifmgd->auth_transaction = 2;
- ieee80211_sta_tx(sdata, skb, 0);
+ mod_timer(&ifmgd->timer, jiffies + IEEE80211_AUTH_TIMEOUT);
}
/*
- * After accepting the AddBA Request we activated a timer,
- * resetting it after each frame that arrives from the originator.
- * if this timer expires ieee80211_sta_stop_rx_ba_session will be executed.
+ * The disassoc 'reason' argument can be either our own reason
+ * if self disconnected or a reason code from the AP.
*/
-static void sta_rx_agg_session_timer_expired(unsigned long data)
-{
- /* not an elegant detour, but there is no choice as the timer passes
- * only one argument, and various sta_info are needed here, so init
- * flow in sta_info_create gives the TID as data, while the timer_to_id
- * array gives the sta through container_of */
- u8 *ptid = (u8 *)data;
- u8 *timer_to_id = ptid - *ptid;
- struct sta_info *sta = container_of(timer_to_id, struct sta_info,
- timer_to_tid[0]);
-
-#ifdef CONFIG_MAC80211_HT_DEBUG
- printk(KERN_DEBUG "rx session timer expired on tid %d\n", (u16)*ptid);
-#endif
- ieee80211_sta_stop_rx_ba_session(sta->sdata, sta->addr,
- (u16)*ptid, WLAN_BACK_TIMER,
- WLAN_REASON_QSTA_TIMEOUT);
-}
-
-static void ieee80211_sta_process_addba_request(struct ieee80211_local *local,
- struct ieee80211_mgmt *mgmt,
- size_t len)
+static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
+ bool deauth, bool self_disconnected,
+ u16 reason)
{
- struct ieee80211_hw *hw = &local->hw;
- struct ieee80211_conf *conf = &hw->conf;
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_conf *conf = &local_to_hw(local)->conf;
+ struct ieee80211_bss *bss;
struct sta_info *sta;
- struct tid_ampdu_rx *tid_agg_rx;
- u16 capab, tid, timeout, ba_policy, buf_size, start_seq_num, status;
- u8 dialog_token;
- int ret = -EOPNOTSUPP;
- DECLARE_MAC_BUF(mac);
+ u32 changed = 0, config_changed = 0;
rcu_read_lock();
- sta = sta_info_get(local, mgmt->sa);
+ sta = sta_info_get(local, ifmgd->bssid);
if (!sta) {
rcu_read_unlock();
return;
}
- /* extract session parameters from addba request frame */
- dialog_token = mgmt->u.action.u.addba_req.dialog_token;
- timeout = le16_to_cpu(mgmt->u.action.u.addba_req.timeout);
- start_seq_num =
- le16_to_cpu(mgmt->u.action.u.addba_req.start_seq_num) >> 4;
-
- capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
- ba_policy = (capab & IEEE80211_ADDBA_PARAM_POLICY_MASK) >> 1;
- tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
- buf_size = (capab & IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK) >> 6;
-
- status = WLAN_STATUS_REQUEST_DECLINED;
-
- /* sanity check for incoming parameters:
- * check if configuration can support the BA policy
- * and if buffer size does not exceeds max value */
- if (((ba_policy != 1)
- && (!(conf->ht_conf.cap & IEEE80211_HT_CAP_DELAY_BA)))
- || (buf_size > IEEE80211_MAX_AMPDU_BUF)) {
- status = WLAN_STATUS_INVALID_QOS_PARAM;
-#ifdef CONFIG_MAC80211_HT_DEBUG
- if (net_ratelimit())
- printk(KERN_DEBUG "AddBA Req with bad params from "
- "%s on tid %u. policy %d, buffer size %d\n",
- print_mac(mac, mgmt->sa), tid, ba_policy,
- buf_size);
-#endif /* CONFIG_MAC80211_HT_DEBUG */
- goto end_no_lock;
- }
- /* determine default buffer size */
- if (buf_size == 0) {
- struct ieee80211_supported_band *sband;
-
- sband = local->hw.wiphy->bands[conf->channel->band];
- buf_size = IEEE80211_MIN_AMPDU_BUF;
- buf_size = buf_size << sband->ht_info.ampdu_factor;
+ if (deauth) {
+ ifmgd->direct_probe_tries = 0;
+ ifmgd->auth_tries = 0;
}
+ ifmgd->assoc_scan_tries = 0;
+ ifmgd->assoc_tries = 0;
+
+ netif_tx_stop_all_queues(sdata->dev);
+ netif_carrier_off(sdata->dev);
+ ieee80211_sta_tear_down_BA_sessions(sta);
- /* examine state machine */
- spin_lock_bh(&sta->lock);
+ bss = ieee80211_rx_bss_get(local, ifmgd->bssid,
+ conf->channel->center_freq,
+ ifmgd->ssid, ifmgd->ssid_len);
- if (sta->ampdu_mlme.tid_state_rx[tid] != HT_AGG_STATE_IDLE) {
-#ifdef CONFIG_MAC80211_HT_DEBUG
- if (net_ratelimit())
- printk(KERN_DEBUG "unexpected AddBA Req from "
- "%s on tid %u\n",
- print_mac(mac, mgmt->sa), tid);
-#endif /* CONFIG_MAC80211_HT_DEBUG */
- goto end;
+ if (bss) {
+ cfg80211_unhold_bss(&bss->cbss);
+ ieee80211_rx_bss_put(local, bss);
}
- /* prepare A-MPDU MLME for Rx aggregation */
- sta->ampdu_mlme.tid_rx[tid] =
- kmalloc(sizeof(struct tid_ampdu_rx), GFP_ATOMIC);
- if (!sta->ampdu_mlme.tid_rx[tid]) {
-#ifdef CONFIG_MAC80211_HT_DEBUG
- if (net_ratelimit())
- printk(KERN_ERR "allocate rx mlme to tid %d failed\n",
- tid);
-#endif
- goto end;
- }
- /* rx timer */
- sta->ampdu_mlme.tid_rx[tid]->session_timer.function =
- sta_rx_agg_session_timer_expired;
- sta->ampdu_mlme.tid_rx[tid]->session_timer.data =
- (unsigned long)&sta->timer_to_tid[tid];
- init_timer(&sta->ampdu_mlme.tid_rx[tid]->session_timer);
-
- tid_agg_rx = sta->ampdu_mlme.tid_rx[tid];
-
- /* prepare reordering buffer */
- tid_agg_rx->reorder_buf =
- kmalloc(buf_size * sizeof(struct sk_buff *), GFP_ATOMIC);
- if (!tid_agg_rx->reorder_buf) {
-#ifdef CONFIG_MAC80211_HT_DEBUG
- if (net_ratelimit())
- printk(KERN_ERR "can not allocate reordering buffer "
- "to tid %d\n", tid);
-#endif
- kfree(sta->ampdu_mlme.tid_rx[tid]);
- goto end;
- }
- memset(tid_agg_rx->reorder_buf, 0,
- buf_size * sizeof(struct sk_buff *));
-
- if (local->ops->ampdu_action)
- ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_RX_START,
- sta->addr, tid, &start_seq_num);
-#ifdef CONFIG_MAC80211_HT_DEBUG
- printk(KERN_DEBUG "Rx A-MPDU request on tid %d result %d\n", tid, ret);
-#endif /* CONFIG_MAC80211_HT_DEBUG */
-
- if (ret) {
- kfree(tid_agg_rx->reorder_buf);
- kfree(tid_agg_rx);
- sta->ampdu_mlme.tid_rx[tid] = NULL;
- goto end;
- }
-
- /* change state and send addba resp */
- sta->ampdu_mlme.tid_state_rx[tid] = HT_AGG_STATE_OPERATIONAL;
- tid_agg_rx->dialog_token = dialog_token;
- tid_agg_rx->ssn = start_seq_num;
- tid_agg_rx->head_seq_num = start_seq_num;
- tid_agg_rx->buf_size = buf_size;
- tid_agg_rx->timeout = timeout;
- tid_agg_rx->stored_mpdu_num = 0;
- status = WLAN_STATUS_SUCCESS;
-end:
- spin_unlock_bh(&sta->lock);
-
-end_no_lock:
- ieee80211_send_addba_resp(sta->sdata, sta->addr, tid,
- dialog_token, status, 1, buf_size, timeout);
- rcu_read_unlock();
-}
+ if (self_disconnected) {
+ if (deauth)
+ ieee80211_send_deauth_disassoc(sdata,
+ IEEE80211_STYPE_DEAUTH, reason);
+ else
+ ieee80211_send_deauth_disassoc(sdata,
+ IEEE80211_STYPE_DISASSOC, reason);
+ }
-static void ieee80211_sta_process_addba_resp(struct ieee80211_local *local,
- struct ieee80211_mgmt *mgmt,
- size_t len)
-{
- struct ieee80211_hw *hw = &local->hw;
- struct sta_info *sta;
- u16 capab;
- u16 tid;
- u8 *state;
+ ifmgd->flags &= ~IEEE80211_STA_ASSOCIATED;
+ changed |= ieee80211_reset_erp_info(sdata);
- rcu_read_lock();
+ ieee80211_led_assoc(local, 0);
+ changed |= BSS_CHANGED_ASSOC;
+ sdata->vif.bss_conf.assoc = false;
- sta = sta_info_get(local, mgmt->sa);
- if (!sta) {
- rcu_read_unlock();
- return;
+ ieee80211_sta_send_apinfo(sdata);
+
+ if (self_disconnected || reason == WLAN_REASON_DISASSOC_STA_HAS_LEFT) {
+ ifmgd->state = IEEE80211_STA_MLME_DISABLED;
+ ieee80211_rx_bss_remove(sdata, ifmgd->bssid,
+ sdata->local->hw.conf.channel->center_freq,
+ ifmgd->ssid, ifmgd->ssid_len);
}
- capab = le16_to_cpu(mgmt->u.action.u.addba_resp.capab);
- tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
+ rcu_read_unlock();
- state = &sta->ampdu_mlme.tid_state_tx[tid];
+ /* channel(_type) changes are handled by ieee80211_hw_config */
+ local->oper_channel_type = NL80211_CHAN_NO_HT;
- spin_lock_bh(&sta->lock);
+ local->power_constr_level = 0;
- if (!(*state & HT_ADDBA_REQUESTED_MSK)) {
- spin_unlock_bh(&sta->lock);
- goto addba_resp_exit;
- }
+ del_timer_sync(&local->dynamic_ps_timer);
+ cancel_work_sync(&local->dynamic_ps_enable_work);
- if (mgmt->u.action.u.addba_resp.dialog_token !=
- sta->ampdu_mlme.tid_tx[tid]->dialog_token) {
- spin_unlock_bh(&sta->lock);
-#ifdef CONFIG_MAC80211_HT_DEBUG
- printk(KERN_DEBUG "wrong addBA response token, tid %d\n", tid);
-#endif /* CONFIG_MAC80211_HT_DEBUG */
- goto addba_resp_exit;
+ if (local->hw.conf.flags & IEEE80211_CONF_PS) {
+ local->hw.conf.flags &= ~IEEE80211_CONF_PS;
+ config_changed |= IEEE80211_CONF_CHANGE_PS;
}
- del_timer_sync(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer);
-#ifdef CONFIG_MAC80211_HT_DEBUG
- printk(KERN_DEBUG "switched off addBA timer for tid %d \n", tid);
-#endif /* CONFIG_MAC80211_HT_DEBUG */
- if (le16_to_cpu(mgmt->u.action.u.addba_resp.status)
- == WLAN_STATUS_SUCCESS) {
- *state |= HT_ADDBA_RECEIVED_MSK;
- sta->ampdu_mlme.addba_req_num[tid] = 0;
+ ieee80211_hw_config(local, config_changed);
+ ieee80211_bss_info_change_notify(sdata, changed);
- if (*state == HT_AGG_STATE_OPERATIONAL)
- ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]);
+ rcu_read_lock();
- spin_unlock_bh(&sta->lock);
- } else {
- sta->ampdu_mlme.addba_req_num[tid]++;
- /* this will allow the state check in stop_BA_session */
- *state = HT_AGG_STATE_OPERATIONAL;
- spin_unlock_bh(&sta->lock);
- ieee80211_stop_tx_ba_session(hw, sta->addr, tid,
- WLAN_BACK_INITIATOR);
+ sta = sta_info_get(local, ifmgd->bssid);
+ if (!sta) {
+ rcu_read_unlock();
+ return;
}
-addba_resp_exit:
+ sta_info_unlink(&sta);
+
rcu_read_unlock();
+
+ sta_info_destroy(sta);
}
-void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, const u8 *da, u16 tid,
- u16 initiator, u16 reason_code)
+static int ieee80211_sta_wep_configured(struct ieee80211_sub_if_data *sdata)
{
- struct ieee80211_local *local = sdata->local;
- struct ieee80211_if_sta *ifsta = &sdata->u.sta;
- struct sk_buff *skb;
- struct ieee80211_mgmt *mgmt;
- u16 params;
+ if (!sdata || !sdata->default_key ||
+ sdata->default_key->conf.alg != ALG_WEP)
+ return 0;
+ return 1;
+}
- skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom);
+static int ieee80211_privacy_mismatch(struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_bss *bss;
+ int bss_privacy;
+ int wep_privacy;
+ int privacy_invoked;
- if (!skb) {
- printk(KERN_ERR "%s: failed to allocate buffer "
- "for delba frame\n", sdata->dev->name);
- return;
- }
+ if (!ifmgd || (ifmgd->flags & IEEE80211_STA_EXT_SME))
+ return 0;
- skb_reserve(skb, local->hw.extra_tx_headroom);
- mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
- memset(mgmt, 0, 24);
- memcpy(mgmt->da, da, ETH_ALEN);
- memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
- if (sdata->vif.type == IEEE80211_IF_TYPE_AP)
- memcpy(mgmt->bssid, sdata->dev->dev_addr, ETH_ALEN);
- else
- memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
- mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
- IEEE80211_STYPE_ACTION);
+ bss = ieee80211_rx_bss_get(local, ifmgd->bssid,
+ local->hw.conf.channel->center_freq,
+ ifmgd->ssid, ifmgd->ssid_len);
+ if (!bss)
+ return 0;
- skb_put(skb, 1 + sizeof(mgmt->u.action.u.delba));
+ bss_privacy = !!(bss->cbss.capability & WLAN_CAPABILITY_PRIVACY);
+ wep_privacy = !!ieee80211_sta_wep_configured(sdata);
+ privacy_invoked = !!(ifmgd->flags & IEEE80211_STA_PRIVACY_INVOKED);
- mgmt->u.action.category = WLAN_CATEGORY_BACK;
- mgmt->u.action.u.delba.action_code = WLAN_ACTION_DELBA;
- params = (u16)(initiator << 11); /* bit 11 initiator */
- params |= (u16)(tid << 12); /* bit 15:12 TID number */
+ ieee80211_rx_bss_put(local, bss);
- mgmt->u.action.u.delba.params = cpu_to_le16(params);
- mgmt->u.action.u.delba.reason_code = cpu_to_le16(reason_code);
+ if ((bss_privacy == wep_privacy) || (bss_privacy == privacy_invoked))
+ return 0;
- ieee80211_sta_tx(sdata, skb, 0);
+ return 1;
}
-void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn)
+static void ieee80211_associate(struct ieee80211_sub_if_data *sdata)
{
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
struct ieee80211_local *local = sdata->local;
- struct sk_buff *skb;
- struct ieee80211_bar *bar;
- u16 bar_control = 0;
- skb = dev_alloc_skb(sizeof(*bar) + local->hw.extra_tx_headroom);
- if (!skb) {
- printk(KERN_ERR "%s: failed to allocate buffer for "
- "bar frame\n", sdata->dev->name);
+ ifmgd->assoc_tries++;
+ if (ifmgd->assoc_tries > IEEE80211_ASSOC_MAX_TRIES) {
+ printk(KERN_DEBUG "%s: association with AP %pM"
+ " timed out\n",
+ sdata->dev->name, ifmgd->bssid);
+ ifmgd->state = IEEE80211_STA_MLME_DISABLED;
+ ieee80211_sta_send_apinfo(sdata);
+ ieee80211_rx_bss_remove(sdata, ifmgd->bssid,
+ sdata->local->hw.conf.channel->center_freq,
+ ifmgd->ssid, ifmgd->ssid_len);
+ /*
+ * We might have a pending scan which had no chance to run yet
+ * due to state == IEEE80211_STA_MLME_ASSOCIATE.
+ * Hence, queue the STAs work again
+ */
+ queue_work(local->hw.workqueue, &ifmgd->work);
return;
}
- skb_reserve(skb, local->hw.extra_tx_headroom);
- bar = (struct ieee80211_bar *)skb_put(skb, sizeof(*bar));
- memset(bar, 0, sizeof(*bar));
- bar->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
- IEEE80211_STYPE_BACK_REQ);
- memcpy(bar->ra, ra, ETH_ALEN);
- memcpy(bar->ta, sdata->dev->dev_addr, ETH_ALEN);
- bar_control |= (u16)IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL;
- bar_control |= (u16)IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA;
- bar_control |= (u16)(tid << 12);
- bar->control = cpu_to_le16(bar_control);
- bar->start_seq_num = cpu_to_le16(ssn);
-
- ieee80211_sta_tx(sdata, skb, 0);
-}
-
-void ieee80211_sta_stop_rx_ba_session(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid,
- u16 initiator, u16 reason)
-{
- struct ieee80211_local *local = sdata->local;
- struct ieee80211_hw *hw = &local->hw;
- struct sta_info *sta;
- int ret, i;
- DECLARE_MAC_BUF(mac);
-
- rcu_read_lock();
- sta = sta_info_get(local, ra);
- if (!sta) {
- rcu_read_unlock();
+ ifmgd->state = IEEE80211_STA_MLME_ASSOCIATE;
+ printk(KERN_DEBUG "%s: associate with AP %pM\n",
+ sdata->dev->name, ifmgd->bssid);
+ if (ieee80211_privacy_mismatch(sdata)) {
+ printk(KERN_DEBUG "%s: mismatch in privacy configuration and "
+ "mixed-cell disabled - abort association\n", sdata->dev->name);
+ ifmgd->state = IEEE80211_STA_MLME_DISABLED;
return;
}
- /* check if TID is in operational state */
- spin_lock_bh(&sta->lock);
- if (sta->ampdu_mlme.tid_state_rx[tid]
- != HT_AGG_STATE_OPERATIONAL) {
- spin_unlock_bh(&sta->lock);
- rcu_read_unlock();
- return;
- }
- sta->ampdu_mlme.tid_state_rx[tid] =
- HT_AGG_STATE_REQ_STOP_BA_MSK |
- (initiator << HT_AGG_STATE_INITIATOR_SHIFT);
- spin_unlock_bh(&sta->lock);
-
- /* stop HW Rx aggregation. ampdu_action existence
- * already verified in session init so we add the BUG_ON */
- BUG_ON(!local->ops->ampdu_action);
-
-#ifdef CONFIG_MAC80211_HT_DEBUG
- printk(KERN_DEBUG "Rx BA session stop requested for %s tid %u\n",
- print_mac(mac, ra), tid);
-#endif /* CONFIG_MAC80211_HT_DEBUG */
-
- ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_RX_STOP,
- ra, tid, NULL);
- if (ret)
- printk(KERN_DEBUG "HW problem - can not stop rx "
- "aggregation for tid %d\n", tid);
-
- /* shutdown timer has not expired */
- if (initiator != WLAN_BACK_TIMER)
- del_timer_sync(&sta->ampdu_mlme.tid_rx[tid]->session_timer);
-
- /* check if this is a self generated aggregation halt */
- if (initiator == WLAN_BACK_RECIPIENT || initiator == WLAN_BACK_TIMER)
- ieee80211_send_delba(sdata, ra, tid, 0, reason);
-
- /* free the reordering buffer */
- for (i = 0; i < sta->ampdu_mlme.tid_rx[tid]->buf_size; i++) {
- if (sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i]) {
- /* release the reordered frames */
- dev_kfree_skb(sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i]);
- sta->ampdu_mlme.tid_rx[tid]->stored_mpdu_num--;
- sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i] = NULL;
- }
- }
- /* free resources */
- kfree(sta->ampdu_mlme.tid_rx[tid]->reorder_buf);
- kfree(sta->ampdu_mlme.tid_rx[tid]);
- sta->ampdu_mlme.tid_rx[tid] = NULL;
- sta->ampdu_mlme.tid_state_rx[tid] = HT_AGG_STATE_IDLE;
+ ieee80211_send_assoc(sdata);
- rcu_read_unlock();
+ mod_timer(&ifmgd->timer, jiffies + IEEE80211_ASSOC_TIMEOUT);
}
-
-static void ieee80211_sta_process_delba(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_mgmt *mgmt, size_t len)
+void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_hdr *hdr)
{
- struct ieee80211_local *local = sdata->local;
- struct sta_info *sta;
- u16 tid, params;
- u16 initiator;
- DECLARE_MAC_BUF(mac);
+ /*
+ * We can postpone the mgd.timer whenever receiving unicast frames
+ * from AP because we know that the connection is working both ways
+ * at that time. But multicast frames (and hence also beacons) must
+ * be ignored here, because we need to trigger the timer during
+ * data idle periods for sending the periodical probe request to
+ * the AP.
+ */
+ if (!is_multicast_ether_addr(hdr->addr1))
+ mod_timer(&sdata->u.mgd.timer,
+ jiffies + IEEE80211_MONITORING_INTERVAL);
+}
- rcu_read_lock();
+void ieee80211_beacon_loss_work(struct work_struct *work)
+{
+ struct ieee80211_sub_if_data *sdata =
+ container_of(work, struct ieee80211_sub_if_data,
+ u.mgd.beacon_loss_work);
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
- sta = sta_info_get(local, mgmt->sa);
- if (!sta) {
- rcu_read_unlock();
- return;
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+ if (net_ratelimit()) {
+ printk(KERN_DEBUG "%s: driver reports beacon loss from AP %pM "
+ "- sending probe request\n", sdata->dev->name,
+ sdata->u.mgd.bssid);
}
+#endif
- params = le16_to_cpu(mgmt->u.action.u.delba.params);
- tid = (params & IEEE80211_DELBA_PARAM_TID_MASK) >> 12;
- initiator = (params & IEEE80211_DELBA_PARAM_INITIATOR_MASK) >> 11;
-
-#ifdef CONFIG_MAC80211_HT_DEBUG
- if (net_ratelimit())
- printk(KERN_DEBUG "delba from %s (%s) tid %d reason code %d\n",
- print_mac(mac, mgmt->sa),
- initiator ? "initiator" : "recipient", tid,
- mgmt->u.action.u.delba.reason_code);
-#endif /* CONFIG_MAC80211_HT_DEBUG */
-
- if (initiator == WLAN_BACK_INITIATOR)
- ieee80211_sta_stop_rx_ba_session(sdata, sta->addr, tid,
- WLAN_BACK_INITIATOR, 0);
- else { /* WLAN_BACK_RECIPIENT */
- spin_lock_bh(&sta->lock);
- sta->ampdu_mlme.tid_state_tx[tid] =
- HT_AGG_STATE_OPERATIONAL;
- spin_unlock_bh(&sta->lock);
- ieee80211_stop_tx_ba_session(&local->hw, sta->addr, tid,
- WLAN_BACK_RECIPIENT);
- }
- rcu_read_unlock();
+ ifmgd->flags |= IEEE80211_STA_PROBEREQ_POLL;
+ ieee80211_send_probe_req(sdata, ifmgd->bssid, ifmgd->ssid,
+ ifmgd->ssid_len, NULL, 0);
+
+ mod_timer(&ifmgd->timer, jiffies + IEEE80211_MONITORING_INTERVAL);
}
-/*
- * After sending add Block Ack request we activated a timer until
- * add Block Ack response will arrive from the recipient.
- * If this timer expires sta_addba_resp_timer_expired will be executed.
- */
-void sta_addba_resp_timer_expired(unsigned long data)
+void ieee80211_beacon_loss(struct ieee80211_vif *vif)
{
- /* not an elegant detour, but there is no choice as the timer passes
- * only one argument, and both sta_info and TID are needed, so init
- * flow in sta_info_create gives the TID as data, while the timer_to_id
- * array gives the sta through container_of */
- u16 tid = *(u8 *)data;
- struct sta_info *temp_sta = container_of((void *)data,
- struct sta_info, timer_to_tid[tid]);
-
- struct ieee80211_local *local = temp_sta->local;
- struct ieee80211_hw *hw = &local->hw;
+ struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
+
+ queue_work(sdata->local->hw.workqueue,
+ &sdata->u.mgd.beacon_loss_work);
+}
+EXPORT_SYMBOL(ieee80211_beacon_loss);
+
+static void ieee80211_associated(struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ struct ieee80211_local *local = sdata->local;
struct sta_info *sta;
- u8 *state;
+ bool disassoc = false;
+
+ /* TODO: start monitoring current AP signal quality and number of
+ * missed beacons. Scan other channels every now and then and search
+ * for better APs. */
+ /* TODO: remove expired BSSes */
+
+ ifmgd->state = IEEE80211_STA_MLME_ASSOCIATED;
rcu_read_lock();
- sta = sta_info_get(local, temp_sta->addr);
+ sta = sta_info_get(local, ifmgd->bssid);
if (!sta) {
- rcu_read_unlock();
- return;
+ printk(KERN_DEBUG "%s: No STA entry for own AP %pM\n",
+ sdata->dev->name, ifmgd->bssid);
+ disassoc = true;
+ goto unlock;
}
- state = &sta->ampdu_mlme.tid_state_tx[tid];
- /* check if the TID waits for addBA response */
- spin_lock_bh(&sta->lock);
- if (!(*state & HT_ADDBA_REQUESTED_MSK)) {
- spin_unlock_bh(&sta->lock);
- *state = HT_AGG_STATE_IDLE;
-#ifdef CONFIG_MAC80211_HT_DEBUG
- printk(KERN_DEBUG "timer expired on tid %d but we are not "
- "expecting addBA response there", tid);
-#endif
- goto timer_expired_exit;
+ if ((ifmgd->flags & IEEE80211_STA_PROBEREQ_POLL) &&
+ time_after(jiffies, sta->last_rx + IEEE80211_MONITORING_INTERVAL)) {
+ printk(KERN_DEBUG "%s: no probe response from AP %pM "
+ "- disassociating\n",
+ sdata->dev->name, ifmgd->bssid);
+ disassoc = true;
+ ifmgd->flags &= ~IEEE80211_STA_PROBEREQ_POLL;
+ goto unlock;
}
-#ifdef CONFIG_MAC80211_HT_DEBUG
- printk(KERN_DEBUG "addBA response timer expired on tid %d\n", tid);
+ /*
+ * Beacon filtering is only enabled with power save and then the
+ * stack should not check for beacon loss.
+ */
+ if (!((local->hw.flags & IEEE80211_HW_BEACON_FILTER) &&
+ (local->hw.conf.flags & IEEE80211_CONF_PS)) &&
+ time_after(jiffies,
+ ifmgd->last_beacon + IEEE80211_MONITORING_INTERVAL)) {
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+ if (net_ratelimit()) {
+ printk(KERN_DEBUG "%s: beacon loss from AP %pM "
+ "- sending probe request\n",
+ sdata->dev->name, ifmgd->bssid);
+ }
#endif
+ ifmgd->flags |= IEEE80211_STA_PROBEREQ_POLL;
+ ieee80211_send_probe_req(sdata, ifmgd->bssid, ifmgd->ssid,
+ ifmgd->ssid_len, NULL, 0);
+ goto unlock;
- /* go through the state check in stop_BA_session */
- *state = HT_AGG_STATE_OPERATIONAL;
- spin_unlock_bh(&sta->lock);
- ieee80211_stop_tx_ba_session(hw, temp_sta->addr, tid,
- WLAN_BACK_INITIATOR);
+ }
+
+ if (time_after(jiffies, sta->last_rx + IEEE80211_PROBE_IDLE_TIME)) {
+ ifmgd->flags |= IEEE80211_STA_PROBEREQ_POLL;
+ ieee80211_send_probe_req(sdata, ifmgd->bssid, ifmgd->ssid,
+ ifmgd->ssid_len, NULL, 0);
+ }
-timer_expired_exit:
+ unlock:
rcu_read_unlock();
+
+ if (disassoc)
+ ieee80211_set_disassoc(sdata, true, true,
+ WLAN_REASON_PREV_AUTH_NOT_VALID);
+ else
+ mod_timer(&ifmgd->timer, jiffies +
+ IEEE80211_MONITORING_INTERVAL);
}
-void ieee80211_sta_tear_down_BA_sessions(struct ieee80211_sub_if_data *sdata, u8 *addr)
+
+static void ieee80211_auth_completed(struct ieee80211_sub_if_data *sdata)
{
- struct ieee80211_local *local = sdata->local;
- int i;
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
- for (i = 0; i < STA_TID_NUM; i++) {
- ieee80211_stop_tx_ba_session(&local->hw, addr, i,
- WLAN_BACK_INITIATOR);
- ieee80211_sta_stop_rx_ba_session(sdata, addr, i,
- WLAN_BACK_RECIPIENT,
- WLAN_REASON_QSTA_LEAVE_QBSS);
- }
+ printk(KERN_DEBUG "%s: authenticated\n", sdata->dev->name);
+ ifmgd->flags |= IEEE80211_STA_AUTHENTICATED;
+ if (ifmgd->flags & IEEE80211_STA_EXT_SME) {
+ /* Wait for SME to request association */
+ ifmgd->state = IEEE80211_STA_MLME_DISABLED;
+ } else
+ ieee80211_associate(sdata);
}
-static void ieee80211_send_refuse_measurement_request(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_msrment_ie *request_ie,
- const u8 *da, const u8 *bssid,
- u8 dialog_token)
-{
- struct ieee80211_local *local = sdata->local;
- struct sk_buff *skb;
- struct ieee80211_mgmt *msr_report;
- skb = dev_alloc_skb(sizeof(*msr_report) + local->hw.extra_tx_headroom +
- sizeof(struct ieee80211_msrment_ie));
+static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_mgmt *mgmt,
+ size_t len)
+{
+ u8 *pos;
+ struct ieee802_11_elems elems;
- if (!skb) {
- printk(KERN_ERR "%s: failed to allocate buffer for "
- "measurement report frame\n", sdata->dev->name);
+ pos = mgmt->u.auth.variable;
+ ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems);
+ if (!elems.challenge)
return;
- }
-
- skb_reserve(skb, local->hw.extra_tx_headroom);
- msr_report = (struct ieee80211_mgmt *)skb_put(skb, 24);
- memset(msr_report, 0, 24);
- memcpy(msr_report->da, da, ETH_ALEN);
- memcpy(msr_report->sa, sdata->dev->dev_addr, ETH_ALEN);
- memcpy(msr_report->bssid, bssid, ETH_ALEN);
- msr_report->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
- IEEE80211_STYPE_ACTION);
-
- skb_put(skb, 1 + sizeof(msr_report->u.action.u.measurement));
- msr_report->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT;
- msr_report->u.action.u.measurement.action_code =
- WLAN_ACTION_SPCT_MSR_RPRT;
- msr_report->u.action.u.measurement.dialog_token = dialog_token;
-
- msr_report->u.action.u.measurement.element_id = WLAN_EID_MEASURE_REPORT;
- msr_report->u.action.u.measurement.length =
- sizeof(struct ieee80211_msrment_ie);
-
- memset(&msr_report->u.action.u.measurement.msr_elem, 0,
- sizeof(struct ieee80211_msrment_ie));
- msr_report->u.action.u.measurement.msr_elem.token = request_ie->token;
- msr_report->u.action.u.measurement.msr_elem.mode |=
- IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED;
- msr_report->u.action.u.measurement.msr_elem.type = request_ie->type;
-
- ieee80211_sta_tx(sdata, skb, 0);
-}
-
-static void ieee80211_sta_process_measurement_req(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_mgmt *mgmt,
- size_t len)
-{
- /*
- * Ignoring measurement request is spec violation.
- * Mandatory measurements must be reported optional
- * measurements might be refused or reported incapable
- * For now just refuse
- * TODO: Answer basic measurement as unmeasured
- */
- ieee80211_send_refuse_measurement_request(sdata,
- &mgmt->u.action.u.measurement.msr_elem,
- mgmt->sa, mgmt->bssid,
- mgmt->u.action.u.measurement.dialog_token);
+ ieee80211_send_auth(sdata, 3, sdata->u.mgd.auth_alg,
+ elems.challenge - 2, elems.challenge_len + 2,
+ sdata->u.mgd.bssid, 1);
+ sdata->u.mgd.auth_transaction = 4;
}
-
static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_if_sta *ifsta,
struct ieee80211_mgmt *mgmt,
size_t len)
{
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
u16 auth_alg, auth_transaction, status_code;
- DECLARE_MAC_BUF(mac);
- if (ifsta->state != IEEE80211_STA_MLME_AUTHENTICATE &&
- sdata->vif.type != IEEE80211_IF_TYPE_IBSS)
+ if (ifmgd->state != IEEE80211_STA_MLME_AUTHENTICATE)
return;
if (len < 24 + 6)
return;
- if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
- memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0)
+ if (memcmp(ifmgd->bssid, mgmt->sa, ETH_ALEN) != 0)
return;
- if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
- memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0)
+ if (memcmp(ifmgd->bssid, mgmt->bssid, ETH_ALEN) != 0)
return;
auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg);
auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction);
status_code = le16_to_cpu(mgmt->u.auth.status_code);
- if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
- /*
- * IEEE 802.11 standard does not require authentication in IBSS
- * networks and most implementations do not seem to use it.
- * However, try to reply to authentication attempts if someone
- * has actually implemented this.
- */
- if (auth_alg != WLAN_AUTH_OPEN || auth_transaction != 1)
- return;
- ieee80211_send_auth(sdata, ifsta, 2, NULL, 0, 0);
- }
-
- if (auth_alg != ifsta->auth_alg ||
- auth_transaction != ifsta->auth_transaction)
+ if (auth_alg != ifmgd->auth_alg ||
+ auth_transaction != ifmgd->auth_transaction)
return;
if (status_code != WLAN_STATUS_SUCCESS) {
const int num_algs = ARRAY_SIZE(algs);
int i, pos;
algs[0] = algs[1] = algs[2] = 0xff;
- if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN)
+ if (ifmgd->auth_algs & IEEE80211_AUTH_ALG_OPEN)
algs[0] = WLAN_AUTH_OPEN;
- if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY)
+ if (ifmgd->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY)
algs[1] = WLAN_AUTH_SHARED_KEY;
- if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP)
+ if (ifmgd->auth_algs & IEEE80211_AUTH_ALG_LEAP)
algs[2] = WLAN_AUTH_LEAP;
- if (ifsta->auth_alg == WLAN_AUTH_OPEN)
+ if (ifmgd->auth_alg == WLAN_AUTH_OPEN)
pos = 0;
- else if (ifsta->auth_alg == WLAN_AUTH_SHARED_KEY)
+ else if (ifmgd->auth_alg == WLAN_AUTH_SHARED_KEY)
pos = 1;
else
pos = 2;
pos++;
if (pos >= num_algs)
pos = 0;
- if (algs[pos] == ifsta->auth_alg ||
+ if (algs[pos] == ifmgd->auth_alg ||
algs[pos] == 0xff)
continue;
if (algs[pos] == WLAN_AUTH_SHARED_KEY &&
!ieee80211_sta_wep_configured(sdata))
continue;
- ifsta->auth_alg = algs[pos];
+ ifmgd->auth_alg = algs[pos];
break;
}
}
return;
}
- switch (ifsta->auth_alg) {
+ switch (ifmgd->auth_alg) {
case WLAN_AUTH_OPEN:
case WLAN_AUTH_LEAP:
- ieee80211_auth_completed(sdata, ifsta);
+ case WLAN_AUTH_FT:
+ ieee80211_auth_completed(sdata);
+ cfg80211_send_rx_auth(sdata->dev, (u8 *) mgmt, len);
break;
case WLAN_AUTH_SHARED_KEY:
- if (ifsta->auth_transaction == 4)
- ieee80211_auth_completed(sdata, ifsta);
- else
- ieee80211_auth_challenge(sdata, ifsta, mgmt, len);
+ if (ifmgd->auth_transaction == 4) {
+ ieee80211_auth_completed(sdata);
+ cfg80211_send_rx_auth(sdata->dev, (u8 *) mgmt, len);
+ } else
+ ieee80211_auth_challenge(sdata, mgmt, len);
break;
}
}
static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_if_sta *ifsta,
struct ieee80211_mgmt *mgmt,
size_t len)
{
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
u16 reason_code;
- DECLARE_MAC_BUF(mac);
if (len < 24 + 2)
return;
- if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN))
+ if (memcmp(ifmgd->bssid, mgmt->sa, ETH_ALEN))
return;
reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
- if (ifsta->flags & IEEE80211_STA_AUTHENTICATED)
- printk(KERN_DEBUG "%s: deauthenticated\n", sdata->dev->name);
+ if (ifmgd->flags & IEEE80211_STA_AUTHENTICATED)
+ printk(KERN_DEBUG "%s: deauthenticated (Reason: %u)\n",
+ sdata->dev->name, reason_code);
- if (ifsta->state == IEEE80211_STA_MLME_AUTHENTICATE ||
- ifsta->state == IEEE80211_STA_MLME_ASSOCIATE ||
- ifsta->state == IEEE80211_STA_MLME_ASSOCIATED) {
- ifsta->state = IEEE80211_STA_MLME_DIRECT_PROBE;
- mod_timer(&ifsta->timer, jiffies +
+ if (!(ifmgd->flags & IEEE80211_STA_EXT_SME) &&
+ (ifmgd->state == IEEE80211_STA_MLME_AUTHENTICATE ||
+ ifmgd->state == IEEE80211_STA_MLME_ASSOCIATE ||
+ ifmgd->state == IEEE80211_STA_MLME_ASSOCIATED)) {
+ ifmgd->state = IEEE80211_STA_MLME_DIRECT_PROBE;
+ mod_timer(&ifmgd->timer, jiffies +
IEEE80211_RETRY_AUTH_INTERVAL);
}
- ieee80211_set_disassoc(sdata, ifsta, true, false, 0);
- ifsta->flags &= ~IEEE80211_STA_AUTHENTICATED;
+ ieee80211_set_disassoc(sdata, true, false, 0);
+ ifmgd->flags &= ~IEEE80211_STA_AUTHENTICATED;
+ cfg80211_send_deauth(sdata->dev, (u8 *) mgmt, len);
}
static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_if_sta *ifsta,
struct ieee80211_mgmt *mgmt,
size_t len)
{
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
u16 reason_code;
- DECLARE_MAC_BUF(mac);
if (len < 24 + 2)
return;
- if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN))
+ if (memcmp(ifmgd->bssid, mgmt->sa, ETH_ALEN))
return;
reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
- if (ifsta->flags & IEEE80211_STA_ASSOCIATED)
- printk(KERN_DEBUG "%s: disassociated\n", sdata->dev->name);
+ if (ifmgd->flags & IEEE80211_STA_ASSOCIATED)
+ printk(KERN_DEBUG "%s: disassociated (Reason: %u)\n",
+ sdata->dev->name, reason_code);
- if (ifsta->state == IEEE80211_STA_MLME_ASSOCIATED) {
- ifsta->state = IEEE80211_STA_MLME_ASSOCIATE;
- mod_timer(&ifsta->timer, jiffies +
+ if (!(ifmgd->flags & IEEE80211_STA_EXT_SME) &&
+ ifmgd->state == IEEE80211_STA_MLME_ASSOCIATED) {
+ ifmgd->state = IEEE80211_STA_MLME_ASSOCIATE;
+ mod_timer(&ifmgd->timer, jiffies +
IEEE80211_RETRY_AUTH_INTERVAL);
}
- ieee80211_set_disassoc(sdata, ifsta, false, false, 0);
+ ieee80211_set_disassoc(sdata, false, false, reason_code);
+ cfg80211_send_disassoc(sdata->dev, (u8 *) mgmt, len);
}
static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_if_sta *ifsta,
struct ieee80211_mgmt *mgmt,
size_t len,
int reassoc)
{
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
struct ieee80211_local *local = sdata->local;
struct ieee80211_supported_band *sband;
struct sta_info *sta;
- u64 rates, basic_rates;
+ u32 rates, basic_rates;
u16 capab_info, status_code, aid;
struct ieee802_11_elems elems;
- struct ieee80211_bss_conf *bss_conf = &sdata->bss_conf;
+ struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
u8 *pos;
+ u32 changed = 0;
int i, j;
- DECLARE_MAC_BUF(mac);
- bool have_higher_than_11mbit = false;
+ bool have_higher_than_11mbit = false, newsta = false;
+ u16 ap_ht_cap_flags;
/* AssocResp and ReassocResp have identical structure, so process both
* of them in this function. */
- if (ifsta->state != IEEE80211_STA_MLME_ASSOCIATE)
+ if (ifmgd->state != IEEE80211_STA_MLME_ASSOCIATE)
return;
if (len < 24 + 6)
return;
- if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0)
+ if (memcmp(ifmgd->bssid, mgmt->sa, ETH_ALEN) != 0)
return;
capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
- printk(KERN_DEBUG "%s: RX %sssocResp from %s (capab=0x%x "
+ printk(KERN_DEBUG "%s: RX %sssocResp from %pM (capab=0x%x "
"status=%d aid=%d)\n",
- sdata->dev->name, reassoc ? "Rea" : "A", print_mac(mac, mgmt->sa),
+ sdata->dev->name, reassoc ? "Rea" : "A", mgmt->sa,
capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14))));
+ pos = mgmt->u.assoc_resp.variable;
+ ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems);
+
+ if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY &&
+ elems.timeout_int && elems.timeout_int_len == 5 &&
+ elems.timeout_int[0] == WLAN_TIMEOUT_ASSOC_COMEBACK) {
+ u32 tu, ms;
+ tu = get_unaligned_le32(elems.timeout_int + 1);
+ ms = tu * 1024 / 1000;
+ printk(KERN_DEBUG "%s: AP rejected association temporarily; "
+ "comeback duration %u TU (%u ms)\n",
+ sdata->dev->name, tu, ms);
+ if (ms > IEEE80211_ASSOC_TIMEOUT)
+ mod_timer(&ifmgd->timer,
+ jiffies + msecs_to_jiffies(ms));
+ return;
+ }
+
if (status_code != WLAN_STATUS_SUCCESS) {
printk(KERN_DEBUG "%s: AP denied association (code=%d)\n",
sdata->dev->name, status_code);
/* if this was a reassociation, ensure we try a "full"
* association next time. This works around some broken APs
* which do not correctly reject reassociation requests. */
- ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET;
+ ifmgd->flags &= ~IEEE80211_STA_PREV_BSSID_SET;
return;
}
"set\n", sdata->dev->name, aid);
aid &= ~(BIT(15) | BIT(14));
- pos = mgmt->u.assoc_resp.variable;
- ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems);
-
if (!elems.supp_rates) {
printk(KERN_DEBUG "%s: no SuppRates element in AssocResp\n",
sdata->dev->name);
}
printk(KERN_DEBUG "%s: associated\n", sdata->dev->name);
- ifsta->aid = aid;
- ifsta->ap_capab = capab_info;
+ ifmgd->aid = aid;
+ ifmgd->ap_capab = capab_info;
- kfree(ifsta->assocresp_ies);
- ifsta->assocresp_ies_len = len - (pos - (u8 *) mgmt);
- ifsta->assocresp_ies = kmalloc(ifsta->assocresp_ies_len, GFP_KERNEL);
- if (ifsta->assocresp_ies)
- memcpy(ifsta->assocresp_ies, pos, ifsta->assocresp_ies_len);
+ kfree(ifmgd->assocresp_ies);
+ ifmgd->assocresp_ies_len = len - (pos - (u8 *) mgmt);
+ ifmgd->assocresp_ies = kmalloc(ifmgd->assocresp_ies_len, GFP_KERNEL);
+ if (ifmgd->assocresp_ies)
+ memcpy(ifmgd->assocresp_ies, pos, ifmgd->assocresp_ies_len);
rcu_read_lock();
/* Add STA entry for the AP */
- sta = sta_info_get(local, ifsta->bssid);
+ sta = sta_info_get(local, ifmgd->bssid);
if (!sta) {
- struct ieee80211_sta_bss *bss;
- int err;
+ newsta = true;
- sta = sta_info_alloc(sdata, ifsta->bssid, GFP_ATOMIC);
+ sta = sta_info_alloc(sdata, ifmgd->bssid, GFP_ATOMIC);
if (!sta) {
printk(KERN_DEBUG "%s: failed to alloc STA entry for"
" the AP\n", sdata->dev->name);
rcu_read_unlock();
return;
}
- bss = ieee80211_rx_bss_get(local, ifsta->bssid,
- local->hw.conf.channel->center_freq,
- ifsta->ssid, ifsta->ssid_len);
- if (bss) {
- sta->last_signal = bss->signal;
- sta->last_qual = bss->qual;
- sta->last_noise = bss->noise;
- ieee80211_rx_bss_put(local, bss);
- }
- err = sta_info_insert(sta);
- if (err) {
- printk(KERN_DEBUG "%s: failed to insert STA entry for"
- " the AP (error %d)\n", sdata->dev->name, err);
- rcu_read_unlock();
- return;
- }
/* update new sta with its last rx activity */
sta->last_rx = jiffies;
}
for (i = 0; i < elems.supp_rates_len; i++) {
int rate = (elems.supp_rates[i] & 0x7f) * 5;
+ bool is_basic = !!(elems.supp_rates[i] & 0x80);
if (rate > 110)
have_higher_than_11mbit = true;
for (j = 0; j < sband->n_bitrates; j++) {
- if (sband->bitrates[j].bitrate == rate)
+ if (sband->bitrates[j].bitrate == rate) {
rates |= BIT(j);
- if (elems.supp_rates[i] & 0x80)
- basic_rates |= BIT(j);
+ if (is_basic)
+ basic_rates |= BIT(j);
+ break;
+ }
}
}
for (i = 0; i < elems.ext_supp_rates_len; i++) {
int rate = (elems.ext_supp_rates[i] & 0x7f) * 5;
+ bool is_basic = !!(elems.ext_supp_rates[i] & 0x80);
if (rate > 110)
have_higher_than_11mbit = true;
- for (j = 0; j < sband->n_bitrates; j++) {
- if (sband->bitrates[j].bitrate == rate)
- rates |= BIT(j);
- if (elems.ext_supp_rates[i] & 0x80)
- basic_rates |= BIT(j);
- }
- }
-
- sta->supp_rates[local->hw.conf.channel->band] = rates;
- sdata->basic_rates = basic_rates;
-
- /* cf. IEEE 802.11 9.2.12 */
- if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ &&
- have_higher_than_11mbit)
- sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE;
- else
- sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE;
-
- if (elems.ht_cap_elem && elems.ht_info_elem && elems.wmm_param &&
- (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) {
- struct ieee80211_ht_bss_info bss_info;
- ieee80211_ht_cap_ie_to_ht_info(
- (struct ieee80211_ht_cap *)
- elems.ht_cap_elem, &sta->ht_info);
- ieee80211_ht_addt_info_ie_to_ht_bss_info(
- (struct ieee80211_ht_addt_info *)
- elems.ht_info_elem, &bss_info);
- ieee80211_handle_ht(local, 1, &sta->ht_info, &bss_info);
- }
-
- rate_control_rate_init(sta, local);
-
- if (elems.wmm_param) {
- set_sta_flags(sta, WLAN_STA_WME);
- rcu_read_unlock();
- ieee80211_sta_wmm_params(local, ifsta, elems.wmm_param,
- elems.wmm_param_len);
- } else
- rcu_read_unlock();
-
- /* set AID and assoc capability,
- * ieee80211_set_associated() will tell the driver */
- bss_conf->aid = aid;
- bss_conf->assoc_capability = capab_info;
- ieee80211_set_associated(sdata, ifsta);
-
- ieee80211_associated(sdata, ifsta);
-}
-
-
-static int ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_if_sta *ifsta,
- struct ieee80211_sta_bss *bss)
-{
- struct ieee80211_local *local = sdata->local;
- int res, rates, i, j;
- struct sk_buff *skb;
- struct ieee80211_mgmt *mgmt;
- u8 *pos;
- struct ieee80211_supported_band *sband;
- union iwreq_data wrqu;
-
- sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
-
- /* Remove possible STA entries from other IBSS networks. */
- sta_info_flush_delayed(sdata);
-
- if (local->ops->reset_tsf) {
- /* Reset own TSF to allow time synchronization work. */
- local->ops->reset_tsf(local_to_hw(local));
+ for (j = 0; j < sband->n_bitrates; j++) {
+ if (sband->bitrates[j].bitrate == rate) {
+ rates |= BIT(j);
+ if (is_basic)
+ basic_rates |= BIT(j);
+ break;
+ }
+ }
}
- memcpy(ifsta->bssid, bss->bssid, ETH_ALEN);
- res = ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID);
- if (res)
- return res;
- local->hw.conf.beacon_int = bss->beacon_int >= 10 ? bss->beacon_int : 10;
+ sta->sta.supp_rates[local->hw.conf.channel->band] = rates;
+ sdata->vif.bss_conf.basic_rates = basic_rates;
- sdata->drop_unencrypted = bss->capability &
- WLAN_CAPABILITY_PRIVACY ? 1 : 0;
+ /* cf. IEEE 802.11 9.2.12 */
+ if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ &&
+ have_higher_than_11mbit)
+ sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE;
+ else
+ sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE;
- res = ieee80211_set_freq(sdata, bss->freq);
+ /* If TKIP/WEP is used, no need to parse AP's HT capabilities */
+ if (elems.ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_TKIP_WEP_USED))
+ ieee80211_ht_cap_ie_to_sta_ht_cap(sband,
+ elems.ht_cap_elem, &sta->sta.ht_cap);
- if (res)
- return res;
+ ap_ht_cap_flags = sta->sta.ht_cap.cap;
- /* Build IBSS probe response */
- skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400);
- if (skb) {
- skb_reserve(skb, local->hw.extra_tx_headroom);
+ rate_control_rate_init(sta);
- mgmt = (struct ieee80211_mgmt *)
- skb_put(skb, 24 + sizeof(mgmt->u.beacon));
- memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon));
- mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
- IEEE80211_STYPE_PROBE_RESP);
- memset(mgmt->da, 0xff, ETH_ALEN);
- memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
- memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
- mgmt->u.beacon.beacon_int =
- cpu_to_le16(local->hw.conf.beacon_int);
- mgmt->u.beacon.timestamp = cpu_to_le64(bss->timestamp);
- mgmt->u.beacon.capab_info = cpu_to_le16(bss->capability);
-
- pos = skb_put(skb, 2 + ifsta->ssid_len);
- *pos++ = WLAN_EID_SSID;
- *pos++ = ifsta->ssid_len;
- memcpy(pos, ifsta->ssid, ifsta->ssid_len);
-
- rates = bss->supp_rates_len;
- if (rates > 8)
- rates = 8;
- pos = skb_put(skb, 2 + rates);
- *pos++ = WLAN_EID_SUPP_RATES;
- *pos++ = rates;
- memcpy(pos, bss->supp_rates, rates);
-
- if (bss->band == IEEE80211_BAND_2GHZ) {
- pos = skb_put(skb, 2 + 1);
- *pos++ = WLAN_EID_DS_PARAMS;
- *pos++ = 1;
- *pos++ = ieee80211_frequency_to_channel(bss->freq);
- }
+ if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED)
+ set_sta_flags(sta, WLAN_STA_MFP);
- pos = skb_put(skb, 2 + 2);
- *pos++ = WLAN_EID_IBSS_PARAMS;
- *pos++ = 2;
- /* FIX: set ATIM window based on scan results */
- *pos++ = 0;
- *pos++ = 0;
+ if (elems.wmm_param)
+ set_sta_flags(sta, WLAN_STA_WME);
- if (bss->supp_rates_len > 8) {
- rates = bss->supp_rates_len - 8;
- pos = skb_put(skb, 2 + rates);
- *pos++ = WLAN_EID_EXT_SUPP_RATES;
- *pos++ = rates;
- memcpy(pos, &bss->supp_rates[8], rates);
+ if (newsta) {
+ int err = sta_info_insert(sta);
+ if (err) {
+ printk(KERN_DEBUG "%s: failed to insert STA entry for"
+ " the AP (error %d)\n", sdata->dev->name, err);
+ rcu_read_unlock();
+ return;
}
-
- ifsta->probe_resp = skb;
-
- ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON);
- }
-
- rates = 0;
- sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
- for (i = 0; i < bss->supp_rates_len; i++) {
- int bitrate = (bss->supp_rates[i] & 0x7f) * 5;
- for (j = 0; j < sband->n_bitrates; j++)
- if (sband->bitrates[j].bitrate == bitrate)
- rates |= BIT(j);
}
- ifsta->supp_rates_bits[local->hw.conf.channel->band] = rates;
- ieee80211_sta_def_wmm_params(sdata, bss, 1);
-
- ifsta->state = IEEE80211_STA_MLME_IBSS_JOINED;
- mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL);
+ rcu_read_unlock();
- memset(&wrqu, 0, sizeof(wrqu));
- memcpy(wrqu.ap_addr.sa_data, bss->bssid, ETH_ALEN);
- wireless_send_event(sdata->dev, SIOCGIWAP, &wrqu, NULL);
+ if (elems.wmm_param)
+ ieee80211_sta_wmm_params(local, ifmgd, elems.wmm_param,
+ elems.wmm_param_len);
- return res;
-}
+ if (elems.ht_info_elem && elems.wmm_param &&
+ (ifmgd->flags & IEEE80211_STA_WMM_ENABLED) &&
+ !(ifmgd->flags & IEEE80211_STA_TKIP_WEP_USED))
+ changed |= ieee80211_enable_ht(sdata, elems.ht_info_elem,
+ ap_ht_cap_flags);
-u64 ieee80211_sta_get_rates(struct ieee80211_local *local,
- struct ieee802_11_elems *elems,
- enum ieee80211_band band)
-{
- struct ieee80211_supported_band *sband;
- struct ieee80211_rate *bitrates;
- size_t num_rates;
- u64 supp_rates;
- int i, j;
- sband = local->hw.wiphy->bands[band];
+ /* set AID and assoc capability,
+ * ieee80211_set_associated() will tell the driver */
+ bss_conf->aid = aid;
+ bss_conf->assoc_capability = capab_info;
+ ieee80211_set_associated(sdata, changed);
- if (!sband) {
- WARN_ON(1);
- sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
- }
+ /*
+ * initialise the time of last beacon to be the association time,
+ * otherwise beacon loss check will trigger immediately
+ */
+ ifmgd->last_beacon = jiffies;
- bitrates = sband->bitrates;
- num_rates = sband->n_bitrates;
- supp_rates = 0;
- for (i = 0; i < elems->supp_rates_len +
- elems->ext_supp_rates_len; i++) {
- u8 rate = 0;
- int own_rate;
- if (i < elems->supp_rates_len)
- rate = elems->supp_rates[i];
- else if (elems->ext_supp_rates)
- rate = elems->ext_supp_rates
- [i - elems->supp_rates_len];
- own_rate = 5 * (rate & 0x7f);
- for (j = 0; j < num_rates; j++)
- if (bitrates[j].bitrate == own_rate)
- supp_rates |= BIT(j);
- }
- return supp_rates;
+ ieee80211_associated(sdata);
+ cfg80211_send_rx_assoc(sdata->dev, (u8 *) mgmt, len);
}
-static u64 ieee80211_sta_get_mandatory_rates(struct ieee80211_local *local,
- enum ieee80211_band band)
-{
- struct ieee80211_supported_band *sband;
- struct ieee80211_rate *bitrates;
- u64 mandatory_rates;
- enum ieee80211_rate_flags mandatory_flag;
- int i;
-
- sband = local->hw.wiphy->bands[band];
- if (!sband) {
- WARN_ON(1);
- sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
- }
-
- if (band == IEEE80211_BAND_2GHZ)
- mandatory_flag = IEEE80211_RATE_MANDATORY_B;
- else
- mandatory_flag = IEEE80211_RATE_MANDATORY_A;
-
- bitrates = sband->bitrates;
- mandatory_rates = 0;
- for (i = 0; i < sband->n_bitrates; i++)
- if (bitrates[i].flags & mandatory_flag)
- mandatory_rates |= BIT(i);
- return mandatory_rates;
-}
static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
struct ieee80211_mgmt *mgmt,
size_t len,
struct ieee80211_rx_status *rx_status,
- struct ieee802_11_elems *elems)
+ struct ieee802_11_elems *elems,
+ bool beacon)
{
struct ieee80211_local *local = sdata->local;
- int freq, clen;
- struct ieee80211_sta_bss *bss;
- struct sta_info *sta;
+ int freq;
+ struct ieee80211_bss *bss;
struct ieee80211_channel *channel;
- u64 beacon_timestamp, rx_timestamp;
- u64 supp_rates = 0;
- bool beacon = ieee80211_is_beacon(mgmt->frame_control);
- enum ieee80211_band band = rx_status->band;
- DECLARE_MAC_BUF(mac);
- DECLARE_MAC_BUF(mac2);
if (elems->ds_params && elems->ds_params_len == 1)
freq = ieee80211_channel_to_frequency(elems->ds_params[0]);
if (!channel || channel->flags & IEEE80211_CHAN_DISABLED)
return;
- if (ieee80211_vif_is_mesh(&sdata->vif) && elems->mesh_id &&
- elems->mesh_config && mesh_matches_local(elems, sdata)) {
- supp_rates = ieee80211_sta_get_rates(local, elems, band);
-
- mesh_neighbour_update(mgmt->sa, supp_rates, sdata,
- mesh_peer_accepts_plinks(elems));
- }
-
- if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && elems->supp_rates &&
- memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0) {
- supp_rates = ieee80211_sta_get_rates(local, elems, band);
-
- rcu_read_lock();
-
- sta = sta_info_get(local, mgmt->sa);
- if (sta) {
- u64 prev_rates;
-
- prev_rates = sta->supp_rates[band];
- /* make sure mandatory rates are always added */
- sta->supp_rates[band] = supp_rates |
- ieee80211_sta_get_mandatory_rates(local, band);
-
-#ifdef CONFIG_MAC80211_IBSS_DEBUG
- if (sta->supp_rates[band] != prev_rates)
- printk(KERN_DEBUG "%s: updated supp_rates set "
- "for %s based on beacon info (0x%llx | "
- "0x%llx -> 0x%llx)\n",
- sdata->dev->name, print_mac(mac, sta->addr),
- (unsigned long long) prev_rates,
- (unsigned long long) supp_rates,
- (unsigned long long) sta->supp_rates[band]);
-#endif
- } else {
- ieee80211_ibss_add_sta(sdata, NULL, mgmt->bssid,
- mgmt->sa, supp_rates);
- }
-
- rcu_read_unlock();
- }
-
-#ifdef CONFIG_MAC80211_MESH
- if (elems->mesh_config)
- bss = ieee80211_rx_mesh_bss_get(local, elems->mesh_id,
- elems->mesh_id_len, elems->mesh_config, freq);
- else
-#endif
- bss = ieee80211_rx_bss_get(local, mgmt->bssid, freq,
- elems->ssid, elems->ssid_len);
- if (!bss) {
-#ifdef CONFIG_MAC80211_MESH
- if (elems->mesh_config)
- bss = ieee80211_rx_mesh_bss_add(local, elems->mesh_id,
- elems->mesh_id_len, elems->mesh_config,
- elems->mesh_config_len, freq);
- else
-#endif
- bss = ieee80211_rx_bss_add(sdata, mgmt->bssid, freq,
- elems->ssid, elems->ssid_len);
- if (!bss)
- return;
- } else {
-#if 0
- /* TODO: order by RSSI? */
- spin_lock_bh(&local->sta_bss_lock);
- list_move_tail(&bss->list, &local->sta_bss_list);
- spin_unlock_bh(&local->sta_bss_lock);
-#endif
- }
-
- /* save the ERP value so that it is available at association time */
- if (elems->erp_info && elems->erp_info_len >= 1) {
- bss->erp_value = elems->erp_info[0];
- bss->has_erp_value = 1;
- }
-
- bss->beacon_int = le16_to_cpu(mgmt->u.beacon.beacon_int);
- bss->capability = le16_to_cpu(mgmt->u.beacon.capab_info);
-
- if (elems->tim) {
- struct ieee80211_tim_ie *tim_ie =
- (struct ieee80211_tim_ie *)elems->tim;
- bss->dtim_period = tim_ie->dtim_period;
- }
-
- /* set default value for buggy APs */
- if (!elems->tim || bss->dtim_period == 0)
- bss->dtim_period = 1;
-
- bss->supp_rates_len = 0;
- if (elems->supp_rates) {
- clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len;
- if (clen > elems->supp_rates_len)
- clen = elems->supp_rates_len;
- memcpy(&bss->supp_rates[bss->supp_rates_len], elems->supp_rates,
- clen);
- bss->supp_rates_len += clen;
- }
- if (elems->ext_supp_rates) {
- clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len;
- if (clen > elems->ext_supp_rates_len)
- clen = elems->ext_supp_rates_len;
- memcpy(&bss->supp_rates[bss->supp_rates_len],
- elems->ext_supp_rates, clen);
- bss->supp_rates_len += clen;
- }
-
- bss->band = band;
-
- beacon_timestamp = le64_to_cpu(mgmt->u.beacon.timestamp);
-
- bss->timestamp = beacon_timestamp;
- bss->last_update = jiffies;
- bss->signal = rx_status->signal;
- bss->noise = rx_status->noise;
- bss->qual = rx_status->qual;
- if (!beacon)
- bss->last_probe_resp = jiffies;
- /*
- * In STA mode, the remaining parameters should not be overridden
- * by beacons because they're not necessarily accurate there.
- */
- if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
- bss->last_probe_resp && beacon) {
- ieee80211_rx_bss_put(local, bss);
+ bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems,
+ channel, beacon);
+ if (!bss)
return;
- }
- if (bss->ies == NULL || bss->ies_len < elems->total_len) {
- kfree(bss->ies);
- bss->ies = kmalloc(elems->total_len, GFP_ATOMIC);
- }
- if (bss->ies) {
- memcpy(bss->ies, elems->ie_start, elems->total_len);
- bss->ies_len = elems->total_len;
- } else
- bss->ies_len = 0;
-
- bss->wmm_used = elems->wmm_param || elems->wmm_info;
-
- /* check if we need to merge IBSS */
- if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && beacon &&
- !local->sta_sw_scanning && !local->sta_hw_scanning &&
- bss->capability & WLAN_CAPABILITY_IBSS &&
- bss->freq == local->oper_channel->center_freq &&
- elems->ssid_len == sdata->u.sta.ssid_len &&
- memcmp(elems->ssid, sdata->u.sta.ssid,
- sdata->u.sta.ssid_len) == 0) {
- if (rx_status->flag & RX_FLAG_TSFT) {
- /* in order for correct IBSS merging we need mactime
- *
- * since mactime is defined as the time the first data
- * symbol of the frame hits the PHY, and the timestamp
- * of the beacon is defined as "the time that the data
- * symbol containing the first bit of the timestamp is
- * transmitted to the PHY plus the transmitting STA’s
- * delays through its local PHY from the MAC-PHY
- * interface to its interface with the WM"
- * (802.11 11.1.2) - equals the time this bit arrives at
- * the receiver - we have to take into account the
- * offset between the two.
- * e.g: at 1 MBit that means mactime is 192 usec earlier
- * (=24 bytes * 8 usecs/byte) than the beacon timestamp.
- */
- int rate = local->hw.wiphy->bands[band]->
- bitrates[rx_status->rate_idx].bitrate;
- rx_timestamp = rx_status->mactime + (24 * 8 * 10 / rate);
- } else if (local && local->ops && local->ops->get_tsf)
- /* second best option: get current TSF */
- rx_timestamp = local->ops->get_tsf(local_to_hw(local));
- else
- /* can't merge without knowing the TSF */
- rx_timestamp = -1LLU;
-#ifdef CONFIG_MAC80211_IBSS_DEBUG
- printk(KERN_DEBUG "RX beacon SA=%s BSSID="
- "%s TSF=0x%llx BCN=0x%llx diff=%lld @%lu\n",
- print_mac(mac, mgmt->sa),
- print_mac(mac2, mgmt->bssid),
- (unsigned long long)rx_timestamp,
- (unsigned long long)beacon_timestamp,
- (unsigned long long)(rx_timestamp - beacon_timestamp),
- jiffies);
-#endif /* CONFIG_MAC80211_IBSS_DEBUG */
- if (beacon_timestamp > rx_timestamp) {
-#ifdef CONFIG_MAC80211_IBSS_DEBUG
- printk(KERN_DEBUG "%s: beacon TSF higher than "
- "local TSF - IBSS merge with BSSID %s\n",
- sdata->dev->name, print_mac(mac, mgmt->bssid));
-#endif
- ieee80211_sta_join_ibss(sdata, &sdata->u.sta, bss);
- ieee80211_ibss_add_sta(sdata, NULL,
- mgmt->bssid, mgmt->sa,
- supp_rates);
- }
+ if (elems->ch_switch_elem && (elems->ch_switch_elem_len == 3) &&
+ (memcmp(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN) == 0)) {
+ struct ieee80211_channel_sw_ie *sw_elem =
+ (struct ieee80211_channel_sw_ie *)elems->ch_switch_elem;
+ ieee80211_process_chanswitch(sdata, sw_elem, bss);
}
ieee80211_rx_bss_put(local, bss);
size_t len,
struct ieee80211_rx_status *rx_status)
{
+ struct ieee80211_if_managed *ifmgd;
size_t baselen;
struct ieee802_11_elems elems;
- struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+
+ ifmgd = &sdata->u.mgd;
if (memcmp(mgmt->da, sdata->dev->dev_addr, ETH_ALEN))
return; /* ignore ProbeResp to foreign address */
ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen,
&elems);
- ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
+ ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, false);
/* direct probe may be part of the association flow */
if (test_and_clear_bit(IEEE80211_STA_REQ_DIRECT_PROBE,
- &ifsta->request)) {
+ &ifmgd->request)) {
printk(KERN_DEBUG "%s direct probe responded\n",
sdata->dev->name);
- ieee80211_authenticate(sdata, ifsta);
+ ieee80211_authenticate(sdata);
}
-}
+ if (ifmgd->flags & IEEE80211_STA_PROBEREQ_POLL)
+ ifmgd->flags &= ~IEEE80211_STA_PROBEREQ_POLL;
+}
static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
struct ieee80211_mgmt *mgmt,
size_t len,
struct ieee80211_rx_status *rx_status)
{
- struct ieee80211_if_sta *ifsta;
+ struct ieee80211_if_managed *ifmgd;
size_t baselen;
struct ieee802_11_elems elems;
struct ieee80211_local *local = sdata->local;
- struct ieee80211_conf *conf = &local->hw.conf;
u32 changed = 0;
+ bool erp_valid, directed_tim;
+ u8 erp_value = 0;
/* Process beacon from the current BSS */
baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems);
- ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
+ ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, true);
- if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
+ if (sdata->vif.type != NL80211_IFTYPE_STATION)
return;
- ifsta = &sdata->u.sta;
- if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED) ||
- memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0)
+ ifmgd = &sdata->u.mgd;
+
+ if (!(ifmgd->flags & IEEE80211_STA_ASSOCIATED) ||
+ memcmp(ifmgd->bssid, mgmt->bssid, ETH_ALEN) != 0)
return;
- /* Do not send changes to driver if we are scanning. This removes
- * requirement that a driver's bss_info_changed/conf_tx functions
- * need to be atomic.
- * This is really ugly code, we should rewrite scanning and make
- * all this more understandable for humans.
- */
- if (local->sta_sw_scanning || local->sta_hw_scanning)
+ if (rx_status->freq != local->hw.conf.channel->center_freq)
return;
- ieee80211_sta_wmm_params(local, ifsta, elems.wmm_param,
+ ieee80211_sta_wmm_params(local, ifmgd, elems.wmm_param,
elems.wmm_param_len);
- if (elems.erp_info && elems.erp_info_len >= 1)
- changed |= ieee80211_handle_erp_ie(sdata, elems.erp_info[0]);
- else {
- u16 capab = le16_to_cpu(mgmt->u.beacon.capab_info);
- changed |= ieee80211_handle_protect_preamb(sdata, false,
- (capab & WLAN_CAPABILITY_SHORT_PREAMBLE) != 0);
+ if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) {
+ directed_tim = ieee80211_check_tim(&elems, ifmgd->aid);
+
+ if (directed_tim) {
+ if (local->hw.conf.dynamic_ps_timeout > 0) {
+ local->hw.conf.flags &= ~IEEE80211_CONF_PS;
+ ieee80211_hw_config(local,
+ IEEE80211_CONF_CHANGE_PS);
+ ieee80211_send_nullfunc(local, sdata, 0);
+ } else {
+ local->pspolling = true;
+
+ /*
+ * Here is assumed that the driver will be
+ * able to send ps-poll frame and receive a
+ * response even though power save mode is
+ * enabled, but some drivers might require
+ * to disable power save here. This needs
+ * to be investigated.
+ */
+ ieee80211_send_pspoll(local, sdata);
+ }
+ }
}
- if (elems.ht_cap_elem && elems.ht_info_elem &&
- elems.wmm_param && conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) {
- struct ieee80211_ht_bss_info bss_info;
-
- ieee80211_ht_addt_info_ie_to_ht_bss_info(
- (struct ieee80211_ht_addt_info *)
- elems.ht_info_elem, &bss_info);
- changed |= ieee80211_handle_ht(local, 1, &conf->ht_conf,
- &bss_info);
+ if (elems.erp_info && elems.erp_info_len >= 1) {
+ erp_valid = true;
+ erp_value = elems.erp_info[0];
+ } else {
+ erp_valid = false;
}
+ changed |= ieee80211_handle_bss_capability(sdata,
+ le16_to_cpu(mgmt->u.beacon.capab_info),
+ erp_valid, erp_value);
- ieee80211_bss_info_change_notify(sdata, changed);
-}
+ if (elems.ht_cap_elem && elems.ht_info_elem && elems.wmm_param &&
+ !(ifmgd->flags & IEEE80211_STA_TKIP_WEP_USED)) {
+ struct sta_info *sta;
+ struct ieee80211_supported_band *sband;
+ u16 ap_ht_cap_flags;
-static void ieee80211_rx_mgmt_probe_req(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_if_sta *ifsta,
- struct ieee80211_mgmt *mgmt,
- size_t len,
- struct ieee80211_rx_status *rx_status)
-{
- struct ieee80211_local *local = sdata->local;
- int tx_last_beacon;
- struct sk_buff *skb;
- struct ieee80211_mgmt *resp;
- u8 *pos, *end;
- DECLARE_MAC_BUF(mac);
-#ifdef CONFIG_MAC80211_IBSS_DEBUG
- DECLARE_MAC_BUF(mac2);
- DECLARE_MAC_BUF(mac3);
-#endif
+ rcu_read_lock();
- if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS ||
- ifsta->state != IEEE80211_STA_MLME_IBSS_JOINED ||
- len < 24 + 2 || !ifsta->probe_resp)
- return;
+ sta = sta_info_get(local, ifmgd->bssid);
+ if (!sta) {
+ rcu_read_unlock();
+ return;
+ }
- if (local->ops->tx_last_beacon)
- tx_last_beacon = local->ops->tx_last_beacon(local_to_hw(local));
- else
- tx_last_beacon = 1;
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
-#ifdef CONFIG_MAC80211_IBSS_DEBUG
- printk(KERN_DEBUG "%s: RX ProbeReq SA=%s DA=%s BSSID="
- "%s (tx_last_beacon=%d)\n",
- sdata->dev->name, print_mac(mac, mgmt->sa), print_mac(mac2, mgmt->da),
- print_mac(mac3, mgmt->bssid), tx_last_beacon);
-#endif /* CONFIG_MAC80211_IBSS_DEBUG */
+ ieee80211_ht_cap_ie_to_sta_ht_cap(sband,
+ elems.ht_cap_elem, &sta->sta.ht_cap);
- if (!tx_last_beacon)
- return;
+ ap_ht_cap_flags = sta->sta.ht_cap.cap;
- if (memcmp(mgmt->bssid, ifsta->bssid, ETH_ALEN) != 0 &&
- memcmp(mgmt->bssid, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
- return;
+ rcu_read_unlock();
- end = ((u8 *) mgmt) + len;
- pos = mgmt->u.probe_req.variable;
- if (pos[0] != WLAN_EID_SSID ||
- pos + 2 + pos[1] > end) {
-#ifdef CONFIG_MAC80211_IBSS_DEBUG
- printk(KERN_DEBUG "%s: Invalid SSID IE in ProbeReq "
- "from %s\n",
- sdata->dev->name, print_mac(mac, mgmt->sa));
-#endif
- return;
- }
- if (pos[1] != 0 &&
- (pos[1] != ifsta->ssid_len ||
- memcmp(pos + 2, ifsta->ssid, ifsta->ssid_len) != 0)) {
- /* Ignore ProbeReq for foreign SSID */
- return;
+ changed |= ieee80211_enable_ht(sdata, elems.ht_info_elem,
+ ap_ht_cap_flags);
}
- /* Reply with ProbeResp */
- skb = skb_copy(ifsta->probe_resp, GFP_KERNEL);
- if (!skb)
- return;
-
- resp = (struct ieee80211_mgmt *) skb->data;
- memcpy(resp->da, mgmt->sa, ETH_ALEN);
-#ifdef CONFIG_MAC80211_IBSS_DEBUG
- printk(KERN_DEBUG "%s: Sending ProbeResp to %s\n",
- sdata->dev->name, print_mac(mac, resp->da));
-#endif /* CONFIG_MAC80211_IBSS_DEBUG */
- ieee80211_sta_tx(sdata, skb, 0);
-}
-
-static void ieee80211_rx_mgmt_action(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_if_sta *ifsta,
- struct ieee80211_mgmt *mgmt,
- size_t len,
- struct ieee80211_rx_status *rx_status)
-{
- struct ieee80211_local *local = sdata->local;
-
- /* all categories we currently handle have action_code */
- if (len < IEEE80211_MIN_ACTION_SIZE + 1)
- return;
+ if (elems.country_elem) {
+ /* Note we are only reviewing this on beacons
+ * for the BSSID we are associated to */
+ regulatory_hint_11d(local->hw.wiphy,
+ elems.country_elem, elems.country_elem_len);
- switch (mgmt->u.action.category) {
- case WLAN_CATEGORY_SPECTRUM_MGMT:
- if (local->hw.conf.channel->band != IEEE80211_BAND_5GHZ)
- break;
- switch (mgmt->u.action.u.measurement.action_code) {
- case WLAN_ACTION_SPCT_MSR_REQ:
- if (len < (IEEE80211_MIN_ACTION_SIZE +
- sizeof(mgmt->u.action.u.measurement)))
- break;
- ieee80211_sta_process_measurement_req(sdata, mgmt, len);
- break;
- }
- break;
- case WLAN_CATEGORY_BACK:
- switch (mgmt->u.action.u.addba_req.action_code) {
- case WLAN_ACTION_ADDBA_REQ:
- if (len < (IEEE80211_MIN_ACTION_SIZE +
- sizeof(mgmt->u.action.u.addba_req)))
- break;
- ieee80211_sta_process_addba_request(local, mgmt, len);
- break;
- case WLAN_ACTION_ADDBA_RESP:
- if (len < (IEEE80211_MIN_ACTION_SIZE +
- sizeof(mgmt->u.action.u.addba_resp)))
- break;
- ieee80211_sta_process_addba_resp(local, mgmt, len);
- break;
- case WLAN_ACTION_DELBA:
- if (len < (IEEE80211_MIN_ACTION_SIZE +
- sizeof(mgmt->u.action.u.delba)))
- break;
- ieee80211_sta_process_delba(sdata, mgmt, len);
- break;
- }
- break;
- case PLINK_CATEGORY:
- if (ieee80211_vif_is_mesh(&sdata->vif))
- mesh_rx_plink_frame(sdata, mgmt, len, rx_status);
- break;
- case MESH_PATH_SEL_CATEGORY:
- if (ieee80211_vif_is_mesh(&sdata->vif))
- mesh_rx_path_sel_frame(sdata, mgmt, len);
- break;
+ /* TODO: IBSS also needs this */
+ if (elems.pwr_constr_elem)
+ ieee80211_handle_pwr_constr(sdata,
+ le16_to_cpu(mgmt->u.probe_resp.capab_info),
+ elems.pwr_constr_elem,
+ elems.pwr_constr_elem_len);
}
+
+ ieee80211_bss_info_change_notify(sdata, changed);
}
-void ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
- struct ieee80211_rx_status *rx_status)
+ieee80211_rx_result ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb,
+ struct ieee80211_rx_status *rx_status)
{
struct ieee80211_local *local = sdata->local;
- struct ieee80211_if_sta *ifsta;
struct ieee80211_mgmt *mgmt;
u16 fc;
if (skb->len < 24)
- goto fail;
-
- ifsta = &sdata->u.sta;
+ return RX_DROP_MONITOR;
mgmt = (struct ieee80211_mgmt *) skb->data;
fc = le16_to_cpu(mgmt->frame_control);
case IEEE80211_STYPE_PROBE_REQ:
case IEEE80211_STYPE_PROBE_RESP:
case IEEE80211_STYPE_BEACON:
- case IEEE80211_STYPE_ACTION:
memcpy(skb->cb, rx_status, sizeof(*rx_status));
case IEEE80211_STYPE_AUTH:
case IEEE80211_STYPE_ASSOC_RESP:
case IEEE80211_STYPE_REASSOC_RESP:
case IEEE80211_STYPE_DEAUTH:
case IEEE80211_STYPE_DISASSOC:
- skb_queue_tail(&ifsta->skb_queue, skb);
- queue_work(local->hw.workqueue, &ifsta->work);
- return;
+ skb_queue_tail(&sdata->u.mgd.skb_queue, skb);
+ queue_work(local->hw.workqueue, &sdata->u.mgd.work);
+ return RX_QUEUED;
}
- fail:
- kfree_skb(skb);
+ return RX_DROP_MONITOR;
}
static void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb)
-{
- struct ieee80211_rx_status *rx_status;
- struct ieee80211_if_sta *ifsta;
- struct ieee80211_mgmt *mgmt;
- u16 fc;
-
- ifsta = &sdata->u.sta;
-
- rx_status = (struct ieee80211_rx_status *) skb->cb;
- mgmt = (struct ieee80211_mgmt *) skb->data;
- fc = le16_to_cpu(mgmt->frame_control);
-
- switch (fc & IEEE80211_FCTL_STYPE) {
- case IEEE80211_STYPE_PROBE_REQ:
- ieee80211_rx_mgmt_probe_req(sdata, ifsta, mgmt, skb->len,
- rx_status);
- break;
- case IEEE80211_STYPE_PROBE_RESP:
- ieee80211_rx_mgmt_probe_resp(sdata, mgmt, skb->len, rx_status);
- break;
- case IEEE80211_STYPE_BEACON:
- ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status);
- break;
- case IEEE80211_STYPE_AUTH:
- ieee80211_rx_mgmt_auth(sdata, ifsta, mgmt, skb->len);
- break;
- case IEEE80211_STYPE_ASSOC_RESP:
- ieee80211_rx_mgmt_assoc_resp(sdata, ifsta, mgmt, skb->len, 0);
- break;
- case IEEE80211_STYPE_REASSOC_RESP:
- ieee80211_rx_mgmt_assoc_resp(sdata, ifsta, mgmt, skb->len, 1);
- break;
- case IEEE80211_STYPE_DEAUTH:
- ieee80211_rx_mgmt_deauth(sdata, ifsta, mgmt, skb->len);
- break;
- case IEEE80211_STYPE_DISASSOC:
- ieee80211_rx_mgmt_disassoc(sdata, ifsta, mgmt, skb->len);
- break;
- case IEEE80211_STYPE_ACTION:
- ieee80211_rx_mgmt_action(sdata, ifsta, mgmt, skb->len, rx_status);
- break;
- }
-
- kfree_skb(skb);
-}
-
-
-ieee80211_rx_result
-ieee80211_sta_rx_scan(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
- struct ieee80211_rx_status *rx_status)
-{
- struct ieee80211_mgmt *mgmt;
- __le16 fc;
-
- if (skb->len < 2)
- return RX_DROP_UNUSABLE;
-
- mgmt = (struct ieee80211_mgmt *) skb->data;
- fc = mgmt->frame_control;
-
- if (ieee80211_is_ctl(fc))
- return RX_CONTINUE;
-
- if (skb->len < 24)
- return RX_DROP_MONITOR;
-
- if (ieee80211_is_probe_resp(fc)) {
- ieee80211_rx_mgmt_probe_resp(sdata, mgmt, skb->len, rx_status);
- dev_kfree_skb(skb);
- return RX_QUEUED;
- }
-
- if (ieee80211_is_beacon(fc)) {
- ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status);
- dev_kfree_skb(skb);
- return RX_QUEUED;
- }
-
- return RX_CONTINUE;
-}
-
-
-static int ieee80211_sta_active_ibss(struct ieee80211_sub_if_data *sdata)
-{
- struct ieee80211_local *local = sdata->local;
- int active = 0;
- struct sta_info *sta;
-
- rcu_read_lock();
-
- list_for_each_entry_rcu(sta, &local->sta_list, list) {
- if (sta->sdata == sdata &&
- time_after(sta->last_rx + IEEE80211_IBSS_MERGE_INTERVAL,
- jiffies)) {
- active++;
- break;
- }
- }
-
- rcu_read_unlock();
-
- return active;
-}
-
-
-static void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata, unsigned long exp_time)
-{
- struct ieee80211_local *local = sdata->local;
- struct sta_info *sta, *tmp;
- LIST_HEAD(tmp_list);
- DECLARE_MAC_BUF(mac);
- unsigned long flags;
-
- spin_lock_irqsave(&local->sta_lock, flags);
- list_for_each_entry_safe(sta, tmp, &local->sta_list, list)
- if (time_after(jiffies, sta->last_rx + exp_time)) {
-#ifdef CONFIG_MAC80211_IBSS_DEBUG
- printk(KERN_DEBUG "%s: expiring inactive STA %s\n",
- sdata->dev->name, print_mac(mac, sta->addr));
-#endif
- __sta_info_unlink(&sta);
- if (sta)
- list_add(&sta->list, &tmp_list);
- }
- spin_unlock_irqrestore(&local->sta_lock, flags);
-
- list_for_each_entry_safe(sta, tmp, &tmp_list, list)
- sta_info_destroy(sta);
-}
-
-
-static void ieee80211_sta_merge_ibss(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_if_sta *ifsta)
-{
- mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL);
-
- ieee80211_sta_expire(sdata, IEEE80211_IBSS_INACTIVITY_LIMIT);
- if (ieee80211_sta_active_ibss(sdata))
- return;
-
- printk(KERN_DEBUG "%s: No active IBSS STAs - trying to scan for other "
- "IBSS networks with same SSID (merge)\n", sdata->dev->name);
- ieee80211_sta_req_scan(sdata, ifsta->ssid, ifsta->ssid_len);
-}
-
-
-#ifdef CONFIG_MAC80211_MESH
-static void ieee80211_mesh_housekeeping(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_if_sta *ifsta)
-{
- bool free_plinks;
-
- ieee80211_sta_expire(sdata, IEEE80211_MESH_PEER_INACTIVITY_LIMIT);
- mesh_path_expire(sdata);
-
- free_plinks = mesh_plink_availables(sdata);
- if (free_plinks != sdata->u.sta.accepting_plinks)
- ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON);
+{
+ struct ieee80211_rx_status *rx_status;
+ struct ieee80211_mgmt *mgmt;
+ u16 fc;
- mod_timer(&ifsta->timer, jiffies +
- IEEE80211_MESH_HOUSEKEEPING_INTERVAL);
-}
+ rx_status = (struct ieee80211_rx_status *) skb->cb;
+ mgmt = (struct ieee80211_mgmt *) skb->data;
+ fc = le16_to_cpu(mgmt->frame_control);
+ switch (fc & IEEE80211_FCTL_STYPE) {
+ case IEEE80211_STYPE_PROBE_RESP:
+ ieee80211_rx_mgmt_probe_resp(sdata, mgmt, skb->len,
+ rx_status);
+ break;
+ case IEEE80211_STYPE_BEACON:
+ ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len,
+ rx_status);
+ break;
+ case IEEE80211_STYPE_AUTH:
+ ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len);
+ break;
+ case IEEE80211_STYPE_ASSOC_RESP:
+ ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len, 0);
+ break;
+ case IEEE80211_STYPE_REASSOC_RESP:
+ ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len, 1);
+ break;
+ case IEEE80211_STYPE_DEAUTH:
+ ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len);
+ break;
+ case IEEE80211_STYPE_DISASSOC:
+ ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len);
+ break;
+ }
-void ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata)
-{
- struct ieee80211_if_sta *ifsta;
- ifsta = &sdata->u.sta;
- ifsta->state = IEEE80211_STA_MLME_MESH_UP;
- ieee80211_sta_timer((unsigned long)sdata);
- ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON);
+ kfree_skb(skb);
}
-#endif
-
-void ieee80211_sta_timer(unsigned long data)
+static void ieee80211_sta_timer(unsigned long data)
{
struct ieee80211_sub_if_data *sdata =
(struct ieee80211_sub_if_data *) data;
- struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
struct ieee80211_local *local = sdata->local;
- set_bit(IEEE80211_STA_REQ_RUN, &ifsta->request);
- queue_work(local->hw.workqueue, &ifsta->work);
+ set_bit(IEEE80211_STA_REQ_RUN, &ifmgd->request);
+ queue_work(local->hw.workqueue, &ifmgd->work);
}
-static void ieee80211_sta_reset_auth(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_if_sta *ifsta)
+static void ieee80211_sta_reset_auth(struct ieee80211_sub_if_data *sdata)
{
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
struct ieee80211_local *local = sdata->local;
if (local->ops->reset_tsf) {
local->ops->reset_tsf(local_to_hw(local));
}
- ifsta->wmm_last_param_set = -1; /* allow any WMM update */
+ ifmgd->wmm_last_param_set = -1; /* allow any WMM update */
- if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN)
- ifsta->auth_alg = WLAN_AUTH_OPEN;
- else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY)
- ifsta->auth_alg = WLAN_AUTH_SHARED_KEY;
- else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP)
- ifsta->auth_alg = WLAN_AUTH_LEAP;
+ if (ifmgd->auth_algs & IEEE80211_AUTH_ALG_OPEN)
+ ifmgd->auth_alg = WLAN_AUTH_OPEN;
+ else if (ifmgd->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY)
+ ifmgd->auth_alg = WLAN_AUTH_SHARED_KEY;
+ else if (ifmgd->auth_algs & IEEE80211_AUTH_ALG_LEAP)
+ ifmgd->auth_alg = WLAN_AUTH_LEAP;
+ else if (ifmgd->auth_algs & IEEE80211_AUTH_ALG_FT)
+ ifmgd->auth_alg = WLAN_AUTH_FT;
else
- ifsta->auth_alg = WLAN_AUTH_OPEN;
- ifsta->auth_transaction = -1;
- ifsta->flags &= ~IEEE80211_STA_ASSOCIATED;
- ifsta->assoc_scan_tries = 0;
- ifsta->direct_probe_tries = 0;
- ifsta->auth_tries = 0;
- ifsta->assoc_tries = 0;
+ ifmgd->auth_alg = WLAN_AUTH_OPEN;
+ ifmgd->auth_transaction = -1;
+ ifmgd->flags &= ~IEEE80211_STA_ASSOCIATED;
+ ifmgd->assoc_scan_tries = 0;
+ ifmgd->direct_probe_tries = 0;
+ ifmgd->auth_tries = 0;
+ ifmgd->assoc_tries = 0;
netif_tx_stop_all_queues(sdata->dev);
netif_carrier_off(sdata->dev);
}
-
-void ieee80211_sta_req_auth(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_if_sta *ifsta)
+static int ieee80211_sta_config_auth(struct ieee80211_sub_if_data *sdata)
{
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
struct ieee80211_local *local = sdata->local;
+ struct ieee80211_bss *bss;
+ u8 *bssid = ifmgd->bssid, *ssid = ifmgd->ssid;
+ u8 ssid_len = ifmgd->ssid_len;
+ u16 capa_mask = WLAN_CAPABILITY_ESS;
+ u16 capa_val = WLAN_CAPABILITY_ESS;
+ struct ieee80211_channel *chan = local->oper_channel;
- if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
- return;
+ if (!(ifmgd->flags & IEEE80211_STA_EXT_SME) &&
+ ifmgd->flags & (IEEE80211_STA_AUTO_SSID_SEL |
+ IEEE80211_STA_AUTO_BSSID_SEL |
+ IEEE80211_STA_AUTO_CHANNEL_SEL)) {
+ capa_mask |= WLAN_CAPABILITY_PRIVACY;
+ if (sdata->default_key)
+ capa_val |= WLAN_CAPABILITY_PRIVACY;
+ }
- if ((ifsta->flags & (IEEE80211_STA_BSSID_SET |
- IEEE80211_STA_AUTO_BSSID_SEL)) &&
- (ifsta->flags & (IEEE80211_STA_SSID_SET |
- IEEE80211_STA_AUTO_SSID_SEL))) {
+ if (ifmgd->flags & IEEE80211_STA_AUTO_CHANNEL_SEL)
+ chan = NULL;
- if (ifsta->state == IEEE80211_STA_MLME_ASSOCIATED)
- ieee80211_set_disassoc(sdata, ifsta, true, true,
- WLAN_REASON_DEAUTH_LEAVING);
+ if (ifmgd->flags & IEEE80211_STA_AUTO_BSSID_SEL)
+ bssid = NULL;
- set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request);
- queue_work(local->hw.workqueue, &ifsta->work);
+ if (ifmgd->flags & IEEE80211_STA_AUTO_SSID_SEL) {
+ ssid = NULL;
+ ssid_len = 0;
}
-}
-static int ieee80211_sta_match_ssid(struct ieee80211_if_sta *ifsta,
- const char *ssid, int ssid_len)
-{
- int tmp, hidden_ssid;
+ bss = (void *)cfg80211_get_bss(local->hw.wiphy, chan,
+ bssid, ssid, ssid_len,
+ capa_mask, capa_val);
- if (ssid_len == ifsta->ssid_len &&
- !memcmp(ifsta->ssid, ssid, ssid_len))
- return 1;
+ if (bss) {
+ ieee80211_set_freq(sdata, bss->cbss.channel->center_freq);
+ if (!(ifmgd->flags & IEEE80211_STA_SSID_SET))
+ ieee80211_sta_set_ssid(sdata, bss->ssid,
+ bss->ssid_len);
+ ieee80211_sta_set_bssid(sdata, bss->cbss.bssid);
+ ieee80211_sta_def_wmm_params(sdata, bss->supp_rates_len,
+ bss->supp_rates);
+ if (sdata->u.mgd.mfp == IEEE80211_MFP_REQUIRED)
+ sdata->u.mgd.flags |= IEEE80211_STA_MFP_ENABLED;
+ else
+ sdata->u.mgd.flags &= ~IEEE80211_STA_MFP_ENABLED;
+
+ /* Send out direct probe if no probe resp was received or
+ * the one we have is outdated
+ */
+ if (!bss->last_probe_resp ||
+ time_after(jiffies, bss->last_probe_resp
+ + IEEE80211_SCAN_RESULT_EXPIRE))
+ ifmgd->state = IEEE80211_STA_MLME_DIRECT_PROBE;
+ else
+ ifmgd->state = IEEE80211_STA_MLME_AUTHENTICATE;
- if (ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL)
+ ieee80211_rx_bss_put(local, bss);
+ ieee80211_sta_reset_auth(sdata);
return 0;
+ } else {
+ if (ifmgd->assoc_scan_tries < IEEE80211_ASSOC_SCANS_MAX_TRIES) {
+ ifmgd->assoc_scan_tries++;
+ /* XXX maybe racy? */
+ if (local->scan_req)
+ return -1;
+ memcpy(local->int_scan_req.ssids[0].ssid,
+ ifmgd->ssid, IEEE80211_MAX_SSID_LEN);
+ if (ifmgd->flags & IEEE80211_STA_AUTO_SSID_SEL)
+ local->int_scan_req.ssids[0].ssid_len = 0;
+ else
+ local->int_scan_req.ssids[0].ssid_len = ifmgd->ssid_len;
- hidden_ssid = 1;
- tmp = ssid_len;
- while (tmp--) {
- if (ssid[tmp] != '\0') {
- hidden_ssid = 0;
- break;
+ if (ieee80211_start_scan(sdata, &local->int_scan_req))
+ ieee80211_scan_failed(local);
+
+ ifmgd->state = IEEE80211_STA_MLME_AUTHENTICATE;
+ set_bit(IEEE80211_STA_REQ_AUTH, &ifmgd->request);
+ } else {
+ ifmgd->assoc_scan_tries = 0;
+ ifmgd->state = IEEE80211_STA_MLME_DISABLED;
}
}
-
- if (hidden_ssid && ifsta->ssid_len == ssid_len)
- return 1;
-
- if (ssid_len == 1 && ssid[0] == ' ')
- return 1;
-
- return 0;
+ return -1;
}
-static int ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_if_sta *ifsta)
+
+static void ieee80211_sta_work(struct work_struct *work)
{
+ struct ieee80211_sub_if_data *sdata =
+ container_of(work, struct ieee80211_sub_if_data, u.mgd.work);
struct ieee80211_local *local = sdata->local;
- struct ieee80211_sta_bss *bss;
- struct ieee80211_supported_band *sband;
- u8 bssid[ETH_ALEN], *pos;
- int i;
- int ret;
- DECLARE_MAC_BUF(mac);
-
-#if 0
- /* Easier testing, use fixed BSSID. */
- memset(bssid, 0xfe, ETH_ALEN);
-#else
- /* Generate random, not broadcast, locally administered BSSID. Mix in
- * own MAC address to make sure that devices that do not have proper
- * random number generator get different BSSID. */
- get_random_bytes(bssid, ETH_ALEN);
- for (i = 0; i < ETH_ALEN; i++)
- bssid[i] ^= sdata->dev->dev_addr[i];
- bssid[0] &= ~0x01;
- bssid[0] |= 0x02;
-#endif
+ struct ieee80211_if_managed *ifmgd;
+ struct sk_buff *skb;
- printk(KERN_DEBUG "%s: Creating new IBSS network, BSSID %s\n",
- sdata->dev->name, print_mac(mac, bssid));
+ if (!netif_running(sdata->dev))
+ return;
- bss = ieee80211_rx_bss_add(sdata, bssid,
- local->hw.conf.channel->center_freq,
- sdata->u.sta.ssid, sdata->u.sta.ssid_len);
- if (!bss)
- return -ENOMEM;
+ if (local->sw_scanning || local->hw_scanning)
+ return;
- bss->band = local->hw.conf.channel->band;
- sband = local->hw.wiphy->bands[bss->band];
+ if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
+ return;
+ ifmgd = &sdata->u.mgd;
- if (local->hw.conf.beacon_int == 0)
- local->hw.conf.beacon_int = 100;
- bss->beacon_int = local->hw.conf.beacon_int;
- bss->last_update = jiffies;
- bss->capability = WLAN_CAPABILITY_IBSS;
+ while ((skb = skb_dequeue(&ifmgd->skb_queue)))
+ ieee80211_sta_rx_queued_mgmt(sdata, skb);
- if (sdata->default_key)
- bss->capability |= WLAN_CAPABILITY_PRIVACY;
- else
- sdata->drop_unencrypted = 0;
+ if (ifmgd->state != IEEE80211_STA_MLME_DIRECT_PROBE &&
+ ifmgd->state != IEEE80211_STA_MLME_AUTHENTICATE &&
+ ifmgd->state != IEEE80211_STA_MLME_ASSOCIATE &&
+ test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifmgd->request)) {
+ /*
+ * The call to ieee80211_start_scan can fail but ieee80211_request_scan
+ * (which queued ieee80211_sta_work) did not return an error. Thus, call
+ * ieee80211_scan_failed here if ieee80211_start_scan fails in order to
+ * notify the scan requester.
+ */
+ if (ieee80211_start_scan(sdata, local->scan_req))
+ ieee80211_scan_failed(local);
+ return;
+ }
- bss->supp_rates_len = sband->n_bitrates;
- pos = bss->supp_rates;
- for (i = 0; i < sband->n_bitrates; i++) {
- int rate = sband->bitrates[i].bitrate;
- *pos++ = (u8) (rate / 5);
+ if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH, &ifmgd->request)) {
+ if (ieee80211_sta_config_auth(sdata))
+ return;
+ clear_bit(IEEE80211_STA_REQ_RUN, &ifmgd->request);
+ } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN, &ifmgd->request))
+ return;
+
+ switch (ifmgd->state) {
+ case IEEE80211_STA_MLME_DISABLED:
+ break;
+ case IEEE80211_STA_MLME_DIRECT_PROBE:
+ ieee80211_direct_probe(sdata);
+ break;
+ case IEEE80211_STA_MLME_AUTHENTICATE:
+ ieee80211_authenticate(sdata);
+ break;
+ case IEEE80211_STA_MLME_ASSOCIATE:
+ ieee80211_associate(sdata);
+ break;
+ case IEEE80211_STA_MLME_ASSOCIATED:
+ ieee80211_associated(sdata);
+ break;
+ default:
+ WARN_ON(1);
+ break;
}
- ret = ieee80211_sta_join_ibss(sdata, ifsta, bss);
- ieee80211_rx_bss_put(local, bss);
- return ret;
-}
+ if (ieee80211_privacy_mismatch(sdata)) {
+ printk(KERN_DEBUG "%s: privacy configuration mismatch and "
+ "mixed-cell disabled - disassociate\n", sdata->dev->name);
+ ieee80211_set_disassoc(sdata, false, true,
+ WLAN_REASON_UNSPECIFIED);
+ }
+}
-static int ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_if_sta *ifsta)
+static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata)
{
- struct ieee80211_local *local = sdata->local;
- struct ieee80211_sta_bss *bss;
- int found = 0;
- u8 bssid[ETH_ALEN];
- int active_ibss;
- DECLARE_MAC_BUF(mac);
- DECLARE_MAC_BUF(mac2);
-
- if (ifsta->ssid_len == 0)
- return -EINVAL;
+ if (sdata->vif.type == NL80211_IFTYPE_STATION) {
+ /*
+ * Need to update last_beacon to avoid beacon loss
+ * test to trigger.
+ */
+ sdata->u.mgd.last_beacon = jiffies;
- active_ibss = ieee80211_sta_active_ibss(sdata);
-#ifdef CONFIG_MAC80211_IBSS_DEBUG
- printk(KERN_DEBUG "%s: sta_find_ibss (active_ibss=%d)\n",
- sdata->dev->name, active_ibss);
-#endif /* CONFIG_MAC80211_IBSS_DEBUG */
- spin_lock_bh(&local->sta_bss_lock);
- list_for_each_entry(bss, &local->sta_bss_list, list) {
- if (ifsta->ssid_len != bss->ssid_len ||
- memcmp(ifsta->ssid, bss->ssid, bss->ssid_len) != 0
- || !(bss->capability & WLAN_CAPABILITY_IBSS))
- continue;
-#ifdef CONFIG_MAC80211_IBSS_DEBUG
- printk(KERN_DEBUG " bssid=%s found\n",
- print_mac(mac, bss->bssid));
-#endif /* CONFIG_MAC80211_IBSS_DEBUG */
- memcpy(bssid, bss->bssid, ETH_ALEN);
- found = 1;
- if (active_ibss || memcmp(bssid, ifsta->bssid, ETH_ALEN) != 0)
- break;
+
+ queue_work(sdata->local->hw.workqueue,
+ &sdata->u.mgd.work);
}
- spin_unlock_bh(&local->sta_bss_lock);
+}
-#ifdef CONFIG_MAC80211_IBSS_DEBUG
- if (found)
- printk(KERN_DEBUG " sta_find_ibss: selected %s current "
- "%s\n", print_mac(mac, bssid),
- print_mac(mac2, ifsta->bssid));
-#endif /* CONFIG_MAC80211_IBSS_DEBUG */
+/* interface setup */
+void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_if_managed *ifmgd;
- if (found && memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0) {
- int ret;
- int search_freq;
+ ifmgd = &sdata->u.mgd;
+ INIT_WORK(&ifmgd->work, ieee80211_sta_work);
+ INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work);
+ INIT_WORK(&ifmgd->beacon_loss_work, ieee80211_beacon_loss_work);
+ setup_timer(&ifmgd->timer, ieee80211_sta_timer,
+ (unsigned long) sdata);
+ setup_timer(&ifmgd->chswitch_timer, ieee80211_chswitch_timer,
+ (unsigned long) sdata);
+ skb_queue_head_init(&ifmgd->skb_queue);
- if (ifsta->flags & IEEE80211_STA_AUTO_CHANNEL_SEL)
- search_freq = bss->freq;
- else
- search_freq = local->hw.conf.channel->center_freq;
+ ifmgd->capab = WLAN_CAPABILITY_ESS;
+ ifmgd->auth_algs = IEEE80211_AUTH_ALG_OPEN |
+ IEEE80211_AUTH_ALG_SHARED_KEY;
+ ifmgd->flags |= IEEE80211_STA_CREATE_IBSS |
+ IEEE80211_STA_AUTO_BSSID_SEL |
+ IEEE80211_STA_AUTO_CHANNEL_SEL;
+ if (sdata->local->hw.queues >= 4)
+ ifmgd->flags |= IEEE80211_STA_WMM_ENABLED;
+}
- bss = ieee80211_rx_bss_get(local, bssid, search_freq,
- ifsta->ssid, ifsta->ssid_len);
- if (!bss)
- goto dont_join;
+/* configuration hooks */
+void ieee80211_sta_req_auth(struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ struct ieee80211_local *local = sdata->local;
- printk(KERN_DEBUG "%s: Selected IBSS BSSID %s"
- " based on configured SSID\n",
- sdata->dev->name, print_mac(mac, bssid));
- ret = ieee80211_sta_join_ibss(sdata, ifsta, bss);
- ieee80211_rx_bss_put(local, bss);
- return ret;
- }
-
-dont_join:
-#ifdef CONFIG_MAC80211_IBSS_DEBUG
- printk(KERN_DEBUG " did not try to join ibss\n");
-#endif /* CONFIG_MAC80211_IBSS_DEBUG */
-
- /* Selected IBSS not found in current scan results - try to scan */
- if (ifsta->state == IEEE80211_STA_MLME_IBSS_JOINED &&
- !ieee80211_sta_active_ibss(sdata)) {
- mod_timer(&ifsta->timer, jiffies +
- IEEE80211_IBSS_MERGE_INTERVAL);
- } else if (time_after(jiffies, local->last_scan_completed +
- IEEE80211_SCAN_INTERVAL)) {
- printk(KERN_DEBUG "%s: Trigger new scan to find an IBSS to "
- "join\n", sdata->dev->name);
- return ieee80211_sta_req_scan(sdata, ifsta->ssid,
- ifsta->ssid_len);
- } else if (ifsta->state != IEEE80211_STA_MLME_IBSS_JOINED) {
- int interval = IEEE80211_SCAN_INTERVAL;
-
- if (time_after(jiffies, ifsta->ibss_join_req +
- IEEE80211_IBSS_JOIN_TIMEOUT)) {
- if ((ifsta->flags & IEEE80211_STA_CREATE_IBSS) &&
- (!(local->oper_channel->flags &
- IEEE80211_CHAN_NO_IBSS)))
- return ieee80211_sta_create_ibss(sdata, ifsta);
- if (ifsta->flags & IEEE80211_STA_CREATE_IBSS) {
- printk(KERN_DEBUG "%s: IBSS not allowed on"
- " %d MHz\n", sdata->dev->name,
- local->hw.conf.channel->center_freq);
- }
+ if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
+ return;
- /* No IBSS found - decrease scan interval and continue
- * scanning. */
- interval = IEEE80211_SCAN_INTERVAL_SLOW;
- }
+ if ((ifmgd->flags & (IEEE80211_STA_BSSID_SET |
+ IEEE80211_STA_AUTO_BSSID_SEL)) &&
+ (ifmgd->flags & (IEEE80211_STA_SSID_SET |
+ IEEE80211_STA_AUTO_SSID_SEL))) {
- ifsta->state = IEEE80211_STA_MLME_IBSS_SEARCH;
- mod_timer(&ifsta->timer, jiffies + interval);
- return 0;
+ if (ifmgd->state == IEEE80211_STA_MLME_ASSOCIATED)
+ ieee80211_set_disassoc(sdata, true, true,
+ WLAN_REASON_DEAUTH_LEAVING);
+
+ if (!(ifmgd->flags & IEEE80211_STA_EXT_SME) ||
+ ifmgd->state != IEEE80211_STA_MLME_ASSOCIATE)
+ set_bit(IEEE80211_STA_REQ_AUTH, &ifmgd->request);
+ else if (ifmgd->flags & IEEE80211_STA_EXT_SME)
+ set_bit(IEEE80211_STA_REQ_RUN, &ifmgd->request);
+ queue_work(local->hw.workqueue, &ifmgd->work);
}
+}
+
+int ieee80211_sta_commit(struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+
+ if (ifmgd->ssid_len)
+ ifmgd->flags |= IEEE80211_STA_SSID_SET;
+ else
+ ifmgd->flags &= ~IEEE80211_STA_SSID_SET;
return 0;
}
-
int ieee80211_sta_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len)
{
- struct ieee80211_if_sta *ifsta;
- int res;
+ struct ieee80211_if_managed *ifmgd;
if (len > IEEE80211_MAX_SSID_LEN)
return -EINVAL;
- ifsta = &sdata->u.sta;
-
- if (ifsta->ssid_len != len || memcmp(ifsta->ssid, ssid, len) != 0) {
- memset(ifsta->ssid, 0, sizeof(ifsta->ssid));
- memcpy(ifsta->ssid, ssid, len);
- ifsta->ssid_len = len;
- ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET;
+ ifmgd = &sdata->u.mgd;
- res = 0;
+ if (ifmgd->ssid_len != len || memcmp(ifmgd->ssid, ssid, len) != 0) {
/*
- * Hack! MLME code needs to be cleaned up to have different
- * entry points for configuration and internal selection change
+ * Do not use reassociation if SSID is changed (different ESS).
*/
- if (netif_running(sdata->dev))
- res = ieee80211_if_config(sdata, IEEE80211_IFCC_SSID);
- if (res) {
- printk(KERN_DEBUG "%s: Failed to config new SSID to "
- "the low-level driver\n", sdata->dev->name);
- return res;
- }
+ ifmgd->flags &= ~IEEE80211_STA_PREV_BSSID_SET;
+ memset(ifmgd->ssid, 0, sizeof(ifmgd->ssid));
+ memcpy(ifmgd->ssid, ssid, len);
+ ifmgd->ssid_len = len;
}
- if (len)
- ifsta->flags |= IEEE80211_STA_SSID_SET;
- else
- ifsta->flags &= ~IEEE80211_STA_SSID_SET;
-
- if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS &&
- !(ifsta->flags & IEEE80211_STA_BSSID_SET)) {
- ifsta->ibss_join_req = jiffies;
- ifsta->state = IEEE80211_STA_MLME_IBSS_SEARCH;
- return ieee80211_sta_find_ibss(sdata, ifsta);
- }
-
- return 0;
+ return ieee80211_sta_commit(sdata);
}
-
int ieee80211_sta_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len)
{
- struct ieee80211_if_sta *ifsta = &sdata->u.sta;
- memcpy(ssid, ifsta->ssid, ifsta->ssid_len);
- *len = ifsta->ssid_len;
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ memcpy(ssid, ifmgd->ssid, ifmgd->ssid_len);
+ *len = ifmgd->ssid_len;
return 0;
}
-
int ieee80211_sta_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid)
{
- struct ieee80211_if_sta *ifsta;
- int res;
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
- ifsta = &sdata->u.sta;
+ if (is_valid_ether_addr(bssid)) {
+ memcpy(ifmgd->bssid, bssid, ETH_ALEN);
+ ifmgd->flags |= IEEE80211_STA_BSSID_SET;
+ } else {
+ memset(ifmgd->bssid, 0, ETH_ALEN);
+ ifmgd->flags &= ~IEEE80211_STA_BSSID_SET;
+ }
- if (memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0) {
- memcpy(ifsta->bssid, bssid, ETH_ALEN);
- res = 0;
- /*
- * Hack! See also ieee80211_sta_set_ssid.
- */
- if (netif_running(sdata->dev))
- res = ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID);
- if (res) {
+ if (netif_running(sdata->dev)) {
+ if (ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID)) {
printk(KERN_DEBUG "%s: Failed to config new BSSID to "
"the low-level driver\n", sdata->dev->name);
- return res;
}
}
- if (is_valid_ether_addr(bssid))
- ifsta->flags |= IEEE80211_STA_BSSID_SET;
- else
- ifsta->flags &= ~IEEE80211_STA_BSSID_SET;
-
- return 0;
+ return ieee80211_sta_commit(sdata);
}
-
-int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata, char *ie, size_t len)
+int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata,
+ const char *ie, size_t len)
{
- struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
- kfree(ifsta->extra_ie);
+ kfree(ifmgd->extra_ie);
if (len == 0) {
- ifsta->extra_ie = NULL;
- ifsta->extra_ie_len = 0;
+ ifmgd->extra_ie = NULL;
+ ifmgd->extra_ie_len = 0;
return 0;
}
- ifsta->extra_ie = kmalloc(len, GFP_KERNEL);
- if (!ifsta->extra_ie) {
- ifsta->extra_ie_len = 0;
+ ifmgd->extra_ie = kmalloc(len, GFP_KERNEL);
+ if (!ifmgd->extra_ie) {
+ ifmgd->extra_ie_len = 0;
return -ENOMEM;
}
- memcpy(ifsta->extra_ie, ie, len);
- ifsta->extra_ie_len = len;
+ memcpy(ifmgd->extra_ie, ie, len);
+ ifmgd->extra_ie_len = len;
return 0;
}
-
-struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
- struct sk_buff *skb, u8 *bssid,
- u8 *addr, u64 supp_rates)
-{
- struct ieee80211_local *local = sdata->local;
- struct sta_info *sta;
- DECLARE_MAC_BUF(mac);
- int band = local->hw.conf.channel->band;
-
- /* TODO: Could consider removing the least recently used entry and
- * allow new one to be added. */
- if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) {
- if (net_ratelimit()) {
- printk(KERN_DEBUG "%s: No room for a new IBSS STA "
- "entry %s\n", sdata->dev->name, print_mac(mac, addr));
- }
- return NULL;
- }
-
- if (compare_ether_addr(bssid, sdata->u.sta.bssid))
- return NULL;
-
-#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
- printk(KERN_DEBUG "%s: Adding new IBSS station %s (dev=%s)\n",
- wiphy_name(local->hw.wiphy), print_mac(mac, addr), sdata->dev->name);
-#endif
-
- sta = sta_info_alloc(sdata, addr, GFP_ATOMIC);
- if (!sta)
- return NULL;
-
- set_sta_flags(sta, WLAN_STA_AUTHORIZED);
-
- /* make sure mandatory rates are always added */
- sta->supp_rates[band] = supp_rates |
- ieee80211_sta_get_mandatory_rates(local, band);
-
- rate_control_rate_init(sta, local);
-
- if (sta_info_insert(sta))
- return NULL;
-
- return sta;
-}
-
-
-static int ieee80211_sta_config_auth(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_if_sta *ifsta)
-{
- struct ieee80211_local *local = sdata->local;
- struct ieee80211_sta_bss *bss, *selected = NULL;
- int top_rssi = 0, freq;
-
- spin_lock_bh(&local->sta_bss_lock);
- freq = local->oper_channel->center_freq;
- list_for_each_entry(bss, &local->sta_bss_list, list) {
- if (!(bss->capability & WLAN_CAPABILITY_ESS))
- continue;
-
- if ((ifsta->flags & (IEEE80211_STA_AUTO_SSID_SEL |
- IEEE80211_STA_AUTO_BSSID_SEL |
- IEEE80211_STA_AUTO_CHANNEL_SEL)) &&
- (!!(bss->capability & WLAN_CAPABILITY_PRIVACY) ^
- !!sdata->default_key))
- continue;
-
- if (!(ifsta->flags & IEEE80211_STA_AUTO_CHANNEL_SEL) &&
- bss->freq != freq)
- continue;
-
- if (!(ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL) &&
- memcmp(bss->bssid, ifsta->bssid, ETH_ALEN))
- continue;
-
- if (!(ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) &&
- !ieee80211_sta_match_ssid(ifsta, bss->ssid, bss->ssid_len))
- continue;
-
- if (!selected || top_rssi < bss->signal) {
- selected = bss;
- top_rssi = bss->signal;
- }
- }
- if (selected)
- atomic_inc(&selected->users);
- spin_unlock_bh(&local->sta_bss_lock);
-
- if (selected) {
- ieee80211_set_freq(sdata, selected->freq);
- if (!(ifsta->flags & IEEE80211_STA_SSID_SET))
- ieee80211_sta_set_ssid(sdata, selected->ssid,
- selected->ssid_len);
- ieee80211_sta_set_bssid(sdata, selected->bssid);
- ieee80211_sta_def_wmm_params(sdata, selected, 0);
-
- /* Send out direct probe if no probe resp was received or
- * the one we have is outdated
- */
- if (!selected->last_probe_resp ||
- time_after(jiffies, selected->last_probe_resp
- + IEEE80211_SCAN_RESULT_EXPIRE))
- ifsta->state = IEEE80211_STA_MLME_DIRECT_PROBE;
- else
- ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE;
-
- ieee80211_rx_bss_put(local, selected);
- ieee80211_sta_reset_auth(sdata, ifsta);
- return 0;
- } else {
- if (ifsta->assoc_scan_tries < IEEE80211_ASSOC_SCANS_MAX_TRIES) {
- ifsta->assoc_scan_tries++;
- if (ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL)
- ieee80211_sta_start_scan(sdata, NULL, 0);
- else
- ieee80211_sta_start_scan(sdata, ifsta->ssid,
- ifsta->ssid_len);
- ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE;
- set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request);
- } else
- ifsta->state = IEEE80211_STA_MLME_DISABLED;
- }
- return -1;
-}
-
-
int ieee80211_sta_deauthenticate(struct ieee80211_sub_if_data *sdata, u16 reason)
{
- struct ieee80211_if_sta *ifsta = &sdata->u.sta;
-
printk(KERN_DEBUG "%s: deauthenticating by local choice (reason=%d)\n",
sdata->dev->name, reason);
- if (sdata->vif.type != IEEE80211_IF_TYPE_STA &&
- sdata->vif.type != IEEE80211_IF_TYPE_IBSS)
+ if (sdata->vif.type != NL80211_IFTYPE_STATION)
return -EINVAL;
- ieee80211_set_disassoc(sdata, ifsta, true, true, reason);
+ ieee80211_set_disassoc(sdata, true, true, reason);
return 0;
}
-
int ieee80211_sta_disassociate(struct ieee80211_sub_if_data *sdata, u16 reason)
{
- struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
printk(KERN_DEBUG "%s: disassociating by local choice (reason=%d)\n",
sdata->dev->name, reason);
- if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
+ if (sdata->vif.type != NL80211_IFTYPE_STATION)
return -EINVAL;
- if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED))
- return -1;
+ if (!(ifmgd->flags & IEEE80211_STA_ASSOCIATED))
+ return -ENOLINK;
- ieee80211_set_disassoc(sdata, ifsta, false, true, reason);
+ ieee80211_set_disassoc(sdata, false, true, reason);
return 0;
}
-void ieee80211_notify_mac(struct ieee80211_hw *hw,
- enum ieee80211_notification_types notif_type)
+/* scan finished notification */
+void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local)
{
- struct ieee80211_local *local = hw_to_local(hw);
- struct ieee80211_sub_if_data *sdata;
-
- switch (notif_type) {
- case IEEE80211_NOTIFY_RE_ASSOC:
- rcu_read_lock();
- list_for_each_entry_rcu(sdata, &local->interfaces, list) {
- if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
- continue;
+ struct ieee80211_sub_if_data *sdata = local->scan_sdata;
- ieee80211_sta_req_auth(sdata, &sdata->u.sta);
- }
- rcu_read_unlock();
- break;
- }
+ /* Restart STA timers */
+ rcu_read_lock();
+ list_for_each_entry_rcu(sdata, &local->interfaces, list)
+ ieee80211_restart_sta_timer(sdata);
+ rcu_read_unlock();
}
-EXPORT_SYMBOL(ieee80211_notify_mac);
-void ieee80211_sta_work(struct work_struct *work)
+void ieee80211_dynamic_ps_disable_work(struct work_struct *work)
{
- struct ieee80211_sub_if_data *sdata =
- container_of(work, struct ieee80211_sub_if_data, u.sta.work);
- struct ieee80211_local *local = sdata->local;
- struct ieee80211_if_sta *ifsta;
- struct sk_buff *skb;
-
- if (!netif_running(sdata->dev))
- return;
-
- if (local->sta_sw_scanning || local->sta_hw_scanning)
- return;
+ struct ieee80211_local *local =
+ container_of(work, struct ieee80211_local,
+ dynamic_ps_disable_work);
- if (WARN_ON(sdata->vif.type != IEEE80211_IF_TYPE_STA &&
- sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
- sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT))
- return;
- ifsta = &sdata->u.sta;
+ if (local->hw.conf.flags & IEEE80211_CONF_PS) {
+ local->hw.conf.flags &= ~IEEE80211_CONF_PS;
+ ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
+ }
- while ((skb = skb_dequeue(&ifsta->skb_queue)))
- ieee80211_sta_rx_queued_mgmt(sdata, skb);
+ ieee80211_wake_queues_by_reason(&local->hw,
+ IEEE80211_QUEUE_STOP_REASON_PS);
+}
-#ifdef CONFIG_MAC80211_MESH
- if (ifsta->preq_queue_len &&
- time_after(jiffies,
- ifsta->last_preq + msecs_to_jiffies(ifsta->mshcfg.dot11MeshHWMPpreqMinInterval)))
- mesh_path_start_discovery(sdata);
-#endif
+void ieee80211_dynamic_ps_enable_work(struct work_struct *work)
+{
+ struct ieee80211_local *local =
+ container_of(work, struct ieee80211_local,
+ dynamic_ps_enable_work);
+ /* XXX: using scan_sdata is completely broken! */
+ struct ieee80211_sub_if_data *sdata = local->scan_sdata;
- if (ifsta->state != IEEE80211_STA_MLME_DIRECT_PROBE &&
- ifsta->state != IEEE80211_STA_MLME_AUTHENTICATE &&
- ifsta->state != IEEE80211_STA_MLME_ASSOCIATE &&
- test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request)) {
- if (ifsta->scan_ssid_len)
- ieee80211_sta_start_scan(sdata, ifsta->scan_ssid, ifsta->scan_ssid_len);
- else
- ieee80211_sta_start_scan(sdata, NULL, 0);
+ if (local->hw.conf.flags & IEEE80211_CONF_PS)
return;
- }
- if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request)) {
- if (ieee80211_sta_config_auth(sdata, ifsta))
- return;
- clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request);
- } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request))
- return;
+ if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK && sdata)
+ ieee80211_send_nullfunc(local, sdata, 1);
- switch (ifsta->state) {
- case IEEE80211_STA_MLME_DISABLED:
- break;
- case IEEE80211_STA_MLME_DIRECT_PROBE:
- ieee80211_direct_probe(sdata, ifsta);
- break;
- case IEEE80211_STA_MLME_AUTHENTICATE:
- ieee80211_authenticate(sdata, ifsta);
- break;
- case IEEE80211_STA_MLME_ASSOCIATE:
- ieee80211_associate(sdata, ifsta);
- break;
- case IEEE80211_STA_MLME_ASSOCIATED:
- ieee80211_associated(sdata, ifsta);
- break;
- case IEEE80211_STA_MLME_IBSS_SEARCH:
- ieee80211_sta_find_ibss(sdata, ifsta);
- break;
- case IEEE80211_STA_MLME_IBSS_JOINED:
- ieee80211_sta_merge_ibss(sdata, ifsta);
- break;
-#ifdef CONFIG_MAC80211_MESH
- case IEEE80211_STA_MLME_MESH_UP:
- ieee80211_mesh_housekeeping(sdata, ifsta);
- break;
-#endif
- default:
- WARN_ON(1);
- break;
- }
+ local->hw.conf.flags |= IEEE80211_CONF_PS;
+ ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
+}
- if (ieee80211_privacy_mismatch(sdata, ifsta)) {
- printk(KERN_DEBUG "%s: privacy configuration mismatch and "
- "mixed-cell disabled - disassociate\n", sdata->dev->name);
+void ieee80211_dynamic_ps_timer(unsigned long data)
+{
+ struct ieee80211_local *local = (void *) data;
- ieee80211_set_disassoc(sdata, ifsta, false, true,
- WLAN_REASON_UNSPECIFIED);
- }
+ queue_work(local->hw.workqueue, &local->dynamic_ps_enable_work);
}
-void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local)
+void ieee80211_send_nullfunc(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata,
+ int powersave)
{
- struct ieee80211_sub_if_data *sdata = local->scan_sdata;
- struct ieee80211_if_sta *ifsta;
+ struct sk_buff *skb;
+ struct ieee80211_hdr *nullfunc;
+ __le16 fc;
+
+ if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
+ return;
- if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
- ifsta = &sdata->u.sta;
- if (!(ifsta->flags & IEEE80211_STA_BSSID_SET) ||
- (!(ifsta->state == IEEE80211_STA_MLME_IBSS_JOINED) &&
- !ieee80211_sta_active_ibss(sdata)))
- ieee80211_sta_find_ibss(sdata, ifsta);
+ skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24);
+ if (!skb) {
+ printk(KERN_DEBUG "%s: failed to allocate buffer for nullfunc "
+ "frame\n", sdata->dev->name);
+ return;
}
+ skb_reserve(skb, local->hw.extra_tx_headroom);
+
+ nullfunc = (struct ieee80211_hdr *) skb_put(skb, 24);
+ memset(nullfunc, 0, 24);
+ fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC |
+ IEEE80211_FCTL_TODS);
+ if (powersave)
+ fc |= cpu_to_le16(IEEE80211_FCTL_PM);
+ nullfunc->frame_control = fc;
+ memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN);
+ memcpy(nullfunc->addr2, sdata->dev->dev_addr, ETH_ALEN);
+ memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN);
+
+ ieee80211_tx_skb(sdata, skb, 0);
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff