/*
* 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>
{
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)
static int ieee80211_compatible_rates(struct ieee80211_bss *bss,
struct ieee80211_supported_band *sband,
- u64 *rates)
+ u32 *rates)
{
int i, j, count;
*rates = 0;
}
/* also used by mesh code */
-u64 ieee80211_sta_get_rates(struct ieee80211_local *local,
+u32 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;
+ u32 supp_rates;
int i, j;
sband = local->hw.wiphy->bands[band];
/* frame sending functions */
+static void add_extra_ies(struct sk_buff *skb, u8 *ies, size_t ies_len)
+{
+ if (ies)
+ memcpy(skb_put(skb, ies_len), ies, ies_len);
+}
+
/* also used by scanning code */
void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
u8 *ssid, size_t ssid_len)
u8 *pos, *supp_rates, *esupp_rates = NULL;
int i;
- skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200);
+ skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200 +
+ sdata->u.sta.ie_probereq_len);
if (!skb) {
printk(KERN_DEBUG "%s: failed to allocate buffer for probe "
"request\n", sdata->dev->name);
*pos = rate->bitrate / 5;
}
+ add_extra_ies(skb, sdata->u.sta.ie_probereq,
+ sdata->u.sta.ie_probereq_len);
+
ieee80211_tx_skb(sdata, skb, 0);
}
struct ieee80211_mgmt *mgmt;
skb = dev_alloc_skb(local->hw.extra_tx_headroom +
- sizeof(*mgmt) + 6 + extra_len);
+ sizeof(*mgmt) + 6 + extra_len +
+ sdata->u.sta.ie_auth_len);
if (!skb) {
printk(KERN_DEBUG "%s: failed to allocate buffer for auth "
"frame\n", sdata->dev->name);
mgmt->u.auth.status_code = cpu_to_le16(0);
if (extra)
memcpy(skb_put(skb, extra_len), extra, extra_len);
+ add_extra_ies(skb, sdata->u.sta.ie_auth, sdata->u.sta.ie_auth_len);
ieee80211_tx_skb(sdata, skb, encrypt);
}
struct ieee80211_local *local = sdata->local;
struct sk_buff *skb;
struct ieee80211_mgmt *mgmt;
- u8 *pos, *ies, *ht_ie;
+ u8 *pos, *ies, *ht_ie, *e_ies;
int i, len, count, rates_len, supp_rates_len;
u16 capab;
struct ieee80211_bss *bss;
int wmm = 0;
struct ieee80211_supported_band *sband;
- u64 rates = 0;
+ u32 rates = 0;
+ size_t e_ies_len;
+
+ if (ifsta->flags & IEEE80211_STA_PREV_BSSID_SET) {
+ e_ies = sdata->u.sta.ie_reassocreq;
+ e_ies_len = sdata->u.sta.ie_reassocreq_len;
+ } else {
+ e_ies = sdata->u.sta.ie_assocreq;
+ e_ies_len = sdata->u.sta.ie_assocreq_len;
+ }
skb = dev_alloc_skb(local->hw.extra_tx_headroom +
sizeof(*mgmt) + 200 + ifsta->extra_ie_len +
- ifsta->ssid_len);
+ ifsta->ssid_len + e_ies_len);
if (!skb) {
printk(KERN_DEBUG "%s: failed to allocate buffer for assoc "
"frame\n", sdata->dev->name);
local->hw.conf.channel->center_freq,
ifsta->ssid, ifsta->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;
}
/* wmm support is a must to HT */
+ /*
+ * 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 && (ifsta->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)) {
+ ht_ie[1] >= sizeof(struct ieee80211_ht_info) &&
+ (!(ifsta->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;
memcpy(pos, &sband->ht_cap.mcs, sizeof(sband->ht_cap.mcs));
}
+ add_extra_ies(skb, e_ies, e_ies_len);
+
kfree(ifsta->assocreq_ies);
ifsta->assocreq_ies_len = (skb->data + skb->len) - ies;
ifsta->assocreq_ies = kmalloc(ifsta->assocreq_ies_len, GFP_KERNEL);
struct ieee80211_if_sta *ifsta = &sdata->u.sta;
struct sk_buff *skb;
struct ieee80211_mgmt *mgmt;
+ u8 *ies;
+ size_t ies_len;
+
+ if (stype == IEEE80211_STYPE_DEAUTH) {
+ ies = sdata->u.sta.ie_deauth;
+ ies_len = sdata->u.sta.ie_deauth_len;
+ } else {
+ ies = sdata->u.sta.ie_disassoc;
+ ies_len = sdata->u.sta.ie_disassoc_len;
+ }
- skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt));
+ skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) +
+ ies_len);
if (!skb) {
printk(KERN_DEBUG "%s: failed to allocate buffer for "
"deauth/disassoc frame\n", sdata->dev->name);
/* u.deauth.reason_code == u.disassoc.reason_code */
mgmt->u.deauth.reason_code = cpu_to_le16(reason);
+ add_extra_ies(skb, ies, ies_len);
+
+ ieee80211_tx_skb(sdata, skb, ifsta->flags & IEEE80211_STA_MFP_ENABLED);
+}
+
+void ieee80211_send_pspoll(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+ struct ieee80211_pspoll *pspoll;
+ struct sk_buff *skb;
+ u16 fc;
+
+ skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*pspoll));
+ if (!skb) {
+ printk(KERN_DEBUG "%s: failed to allocate buffer for "
+ "pspoll frame\n", sdata->dev->name);
+ return;
+ }
+ skb_reserve(skb, local->hw.extra_tx_headroom);
+
+ 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(ifsta->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, ifsta->bssid, ETH_ALEN);
+ memcpy(pspoll->ta, sdata->dev->dev_addr, ETH_ALEN);
+
ieee80211_tx_skb(sdata, skb, 0);
+
+ return;
}
/* MLME */
static void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_bss *bss)
+ const size_t supp_rates_len,
+ const u8 *supp_rates)
{
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)
+ for (i = 0; i < supp_rates_len; i++)
+ if ((supp_rates[i] & 0x7f) * 5 > 110)
have_higher_than_11mbit = 1;
if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ &&
}
}
+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;
+
+ aid &= 0x3fff;
+ index = aid / 8;
+ mask = 1 << (aid & 7);
+
+ indexn1 = tim->bitmap_ctrl & 0xfe;
+ indexn2 = elems->tim_len + indexn1 - 4;
+
+ if (index < indexn1 || index > indexn2)
+ return false;
+
+ index -= indexn1;
+
+ return !!(tim->virtual_map[index] & mask);
+}
+
static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata,
u16 capab, bool erp_valid, u8 erp)
{
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"
- " (BSSID=%s)\n",
+ printk(KERN_DEBUG "%s: switched to %s slot time"
+ " (BSSID=%pM)\n",
sdata->dev->name,
use_short_slot ? "short" : "long",
ifsta->bssid);
bss_info_changed |= BSS_CHANGED_ASSOC;
ifsta->flags |= IEEE80211_STA_ASSOCIATED;
- if (sdata->vif.type != NL80211_IFTYPE_STATION)
- return;
-
bss = ieee80211_rx_bss_get(local, ifsta->bssid,
conf->channel->center_freq,
ifsta->ssid, ifsta->ssid_len);
if (bss) {
/* set timing information */
- sdata->vif.bss_conf.beacon_int = bss->beacon_int;
- sdata->vif.bss_conf.timestamp = bss->timestamp;
+ 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;
bss_info_changed |= ieee80211_handle_bss_capability(sdata,
- bss->capability, bss->has_erp_value, bss->erp_value);
+ bss->cbss.capability, bss->has_erp_value, bss->erp_value);
ieee80211_rx_bss_put(local, bss);
}
ieee80211_bss_info_change_notify(sdata, bss_info_changed);
if (local->powersave) {
- if (local->dynamic_ps_timeout > 0)
+ 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->dynamic_ps_timeout));
- else {
+ 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);
+ ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
}
}
sdata->dev->name, ifsta->bssid);
ifsta->state = IEEE80211_STA_MLME_DISABLED;
ieee80211_sta_send_apinfo(sdata, ifsta);
+
+ /*
+ * Most likely AP is not in the range so remove the
+ * bss information associated to the AP
+ */
+ ieee80211_rx_bss_remove(sdata, ifsta->bssid,
+ sdata->local->hw.conf.channel->center_freq,
+ ifsta->ssid, ifsta->ssid_len);
return;
}
sdata->dev->name, ifsta->bssid);
ifsta->state = IEEE80211_STA_MLME_DISABLED;
ieee80211_sta_send_apinfo(sdata, ifsta);
+ ieee80211_rx_bss_remove(sdata, ifsta->bssid,
+ sdata->local->hw.conf.channel->center_freq,
+ ifsta->ssid, ifsta->ssid_len);
return;
}
netif_tx_stop_all_queues(sdata->dev);
netif_carrier_off(sdata->dev);
- ieee80211_sta_tear_down_BA_sessions(sdata, sta->sta.addr);
+ ieee80211_sta_tear_down_BA_sessions(sta);
if (self_disconnected) {
if (deauth)
ieee80211_sta_send_apinfo(sdata, ifsta);
- if (self_disconnected || reason == WLAN_REASON_DISASSOC_STA_HAS_LEFT)
+ if (self_disconnected || reason == WLAN_REASON_DISASSOC_STA_HAS_LEFT) {
ifsta->state = IEEE80211_STA_MLME_DISABLED;
+ ieee80211_rx_bss_remove(sdata, ifsta->bssid,
+ sdata->local->hw.conf.channel->center_freq,
+ ifsta->ssid, ifsta->ssid_len);
+ }
rcu_read_unlock();
- local->hw.conf.ht.enabled = false;
+ /* channel(_type) changes are handled by ieee80211_hw_config */
local->oper_channel_type = NL80211_CHAN_NO_HT;
- config_changed |= IEEE80211_CONF_CHANGE_HT;
+
+ local->power_constr_level = 0;
del_timer_sync(&local->dynamic_ps_timer);
cancel_work_sync(&local->dynamic_ps_enable_work);
if (!bss)
return 0;
- bss_privacy = !!(bss->capability & WLAN_CAPABILITY_PRIVACY);
+ bss_privacy = !!(bss->cbss.capability & WLAN_CAPABILITY_PRIVACY);
wep_privacy = !!ieee80211_sta_wep_configured(sdata);
privacy_invoked = !!(ifsta->flags & IEEE80211_STA_PRIVACY_INVOKED);
sdata->dev->name, ifsta->bssid);
ifsta->state = IEEE80211_STA_MLME_DISABLED;
ieee80211_sta_send_apinfo(sdata, ifsta);
+ ieee80211_rx_bss_remove(sdata, ifsta->bssid,
+ sdata->local->hw.conf.channel->center_freq,
+ ifsta->ssid, ifsta->ssid_len);
return;
}
elems.challenge_len + 2, 1);
}
+static void ieee80211_rx_mgmt_auth_ibss(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_if_sta *ifsta,
+ struct ieee80211_mgmt *mgmt,
+ size_t len)
+{
+ u16 auth_alg, auth_transaction, status_code;
+
+ if (len < 24 + 6)
+ 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);
+
+ /*
+ * 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)
+ ieee80211_send_auth(sdata, ifsta, 2, NULL, 0, 0);
+}
+
static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
struct ieee80211_if_sta *ifsta,
struct ieee80211_mgmt *mgmt,
{
u16 auth_alg, auth_transaction, status_code;
- if (ifsta->state != IEEE80211_STA_MLME_AUTHENTICATE &&
- sdata->vif.type != NL80211_IFTYPE_ADHOC)
+ if (ifsta->state != IEEE80211_STA_MLME_AUTHENTICATE)
return;
if (len < 24 + 6)
return;
- if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
- memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0)
+ if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0)
return;
- if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
- memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0)
+ if (memcmp(ifsta->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 == NL80211_IFTYPE_ADHOC) {
- /*
- * 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)
return;
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->vif.bss_conf;
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(&ifsta->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);
"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);
/* Add STA entry for the AP */
sta = sta_info_get(local, ifsta->bssid);
if (!sta) {
- struct ieee80211_bss *bss;
-
newsta = true;
sta = sta_info_alloc(sdata, ifsta->bssid, GFP_ATOMIC);
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);
- }
/* update new sta with its last rx activity */
sta->last_rx = jiffies;
rate_control_rate_init(sta);
+ if (ifsta->flags & IEEE80211_STA_MFP_ENABLED)
+ set_sta_flags(sta, WLAN_STA_MFP);
+
if (elems.wmm_param)
set_sta_flags(sta, WLAN_STA_WME);
}
-static int ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_if_sta *ifsta,
- struct ieee80211_bss *bss)
+static int __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_if_sta *ifsta,
+ const u8 *bssid, const int beacon_int,
+ const int freq,
+ const size_t supp_rates_len,
+ const u8 *supp_rates,
+ const u16 capability)
{
struct ieee80211_local *local = sdata->local;
- int res, rates, i, j;
+ int res = 0, rates, i, j;
struct sk_buff *skb;
struct ieee80211_mgmt *mgmt;
u8 *pos;
struct ieee80211_supported_band *sband;
union iwreq_data wrqu;
- skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400);
+ if (local->ops->reset_tsf) {
+ /* Reset own TSF to allow time synchronization work. */
+ local->ops->reset_tsf(local_to_hw(local));
+ }
+
+ if ((ifsta->flags & IEEE80211_STA_PREV_BSSID_SET) &&
+ memcmp(ifsta->bssid, bssid, ETH_ALEN) == 0)
+ return res;
+
+ skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400 +
+ sdata->u.sta.ie_proberesp_len);
if (!skb) {
printk(KERN_DEBUG "%s: failed to allocate buffer for probe "
"response\n", sdata->dev->name);
return -ENOMEM;
}
- 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));
+ if (!(ifsta->flags & IEEE80211_STA_PREV_BSSID_SET)) {
+ /* Remove possible STA entries from other IBSS networks. */
+ sta_info_flush_delayed(sdata);
}
- memcpy(ifsta->bssid, bss->bssid, ETH_ALEN);
+
+ memcpy(ifsta->bssid, 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;
+ local->hw.conf.beacon_int = beacon_int >= 10 ? beacon_int : 10;
- sdata->drop_unencrypted = bss->capability &
+ sdata->drop_unencrypted = capability &
WLAN_CAPABILITY_PRIVACY ? 1 : 0;
- res = ieee80211_set_freq(sdata, bss->freq);
+ res = ieee80211_set_freq(sdata, freq);
if (res)
return res;
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+
/* Build IBSS probe response */
skb_reserve(skb, local->hw.extra_tx_headroom);
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);
+ 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);
+ mgmt->u.beacon.capab_info = cpu_to_le16(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;
+ rates = 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);
+ memcpy(pos, supp_rates, rates);
- if (bss->band == IEEE80211_BAND_2GHZ) {
+ if (sband->band == IEEE80211_BAND_2GHZ) {
pos = skb_put(skb, 2 + 1);
*pos++ = WLAN_EID_DS_PARAMS;
*pos++ = 1;
- *pos++ = ieee80211_frequency_to_channel(bss->freq);
+ *pos++ = ieee80211_frequency_to_channel(freq);
}
pos = skb_put(skb, 2 + 2);
*pos++ = 0;
*pos++ = 0;
- if (bss->supp_rates_len > 8) {
- rates = bss->supp_rates_len - 8;
+ if (supp_rates_len > 8) {
+ rates = 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);
+ memcpy(pos, &supp_rates[8], rates);
}
+ add_extra_ies(skb, sdata->u.sta.ie_proberesp,
+ sdata->u.sta.ie_proberesp_len);
+
ifsta->probe_resp = skb;
- ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON);
+ ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON |
+ IEEE80211_IFCC_BEACON_ENABLED);
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 (i = 0; i < supp_rates_len; i++) {
+ int bitrate = (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);
+ ieee80211_sta_def_wmm_params(sdata, supp_rates_len, supp_rates);
+ ifsta->flags |= IEEE80211_STA_PREV_BSSID_SET;
ifsta->state = IEEE80211_STA_MLME_IBSS_JOINED;
mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL);
ieee80211_led_assoc(local, true);
memset(&wrqu, 0, sizeof(wrqu));
- memcpy(wrqu.ap_addr.sa_data, bss->bssid, ETH_ALEN);
+ memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN);
wireless_send_event(sdata->dev, SIOCGIWAP, &wrqu, NULL);
return res;
}
+static int ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_if_sta *ifsta,
+ struct ieee80211_bss *bss)
+{
+ return __ieee80211_sta_join_ibss(sdata, ifsta,
+ bss->cbss.bssid,
+ bss->cbss.beacon_interval,
+ bss->cbss.channel->center_freq,
+ bss->supp_rates_len, bss->supp_rates,
+ bss->cbss.capability);
+}
+
static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
struct ieee80211_mgmt *mgmt,
size_t len,
struct sta_info *sta;
struct ieee80211_channel *channel;
u64 beacon_timestamp, rx_timestamp;
- u64 supp_rates = 0;
+ u32 supp_rates = 0;
enum ieee80211_band band = rx_status->band;
if (elems->ds_params && elems->ds_params_len == 1)
sta = sta_info_get(local, mgmt->sa);
if (sta) {
- u64 prev_rates;
+ u32 prev_rates;
prev_rates = sta->sta.supp_rates[band];
/* make sure mandatory rates are always added */
}
bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems,
- freq, beacon);
+ channel, beacon);
if (!bss)
return;
+ if (elems->ch_switch_elem && (elems->ch_switch_elem_len == 3) &&
+ (memcmp(mgmt->bssid, sdata->u.sta.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);
+ }
+
/* was just updated in ieee80211_bss_info_update */
- beacon_timestamp = bss->timestamp;
+ beacon_timestamp = bss->cbss.tsf;
- /*
- * In STA mode, the remaining parameters should not be overridden
- * by beacons because they're not necessarily accurate there.
- */
- if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
- bss->last_probe_resp && beacon) {
- ieee80211_rx_bss_put(local, bss);
- return;
- }
+ if (sdata->vif.type != NL80211_IFTYPE_ADHOC)
+ goto put_bss;
/* check if we need to merge IBSS */
- if (sdata->vif.type == NL80211_IFTYPE_ADHOC && beacon &&
- bss->capability & WLAN_CAPABILITY_IBSS &&
- bss->freq == local->oper_channel->center_freq &&
- elems->ssid_len == sdata->u.sta.ssid_len &&
+
+ /* merge only on beacons (???) */
+ if (!beacon)
+ goto put_bss;
+
+ /* we use a fixed BSSID */
+ if (sdata->u.sta.flags & IEEE80211_STA_BSSID_SET)
+ goto put_bss;
+
+ /* not an IBSS */
+ if (!(bss->cbss.capability & WLAN_CAPABILITY_IBSS))
+ goto put_bss;
+
+ /* different channel */
+ if (bss->cbss.channel != local->oper_channel)
+ goto put_bss;
+
+ /* different SSID */
+ if (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;
- if (rx_status->flag & RX_FLAG_HT) {
- rate = 65; /* TODO: HT rates */
- } else {
- 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));
+ sdata->u.sta.ssid_len))
+ goto put_bss;
+
+ if (rx_status->flag & RX_FLAG_TSFT) {
+ /*
+ * 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;
+
+ if (rx_status->flag & RX_FLAG_HT)
+ rate = 65; /* TODO: HT rates */
else
- /* can't merge without knowing the TSF */
- rx_timestamp = -1LLU;
+ 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=%pM BSSID="
- "%pM TSF=0x%llx BCN=0x%llx diff=%lld @%lu\n",
- mgmt->sa, 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) {
+ printk(KERN_DEBUG "RX beacon SA=%pM BSSID="
+ "%pM TSF=0x%llx BCN=0x%llx diff=%lld @%lu\n",
+ mgmt->sa, mgmt->bssid,
+ (unsigned long long)rx_timestamp,
+ (unsigned long long)beacon_timestamp,
+ (unsigned long long)(rx_timestamp - beacon_timestamp),
+ jiffies);
+#endif
+
+ if (beacon_timestamp > rx_timestamp) {
#ifdef CONFIG_MAC80211_IBSS_DEBUG
- printk(KERN_DEBUG "%s: beacon TSF higher than "
- "local TSF - IBSS merge with BSSID %pM\n",
- sdata->dev->name, mgmt->bssid);
+ printk(KERN_DEBUG "%s: beacon TSF higher than "
+ "local TSF - IBSS merge with BSSID %pM\n",
+ sdata->dev->name, mgmt->bssid);
#endif
- ieee80211_sta_join_ibss(sdata, &sdata->u.sta, bss);
- ieee80211_ibss_add_sta(sdata, mgmt->bssid, mgmt->sa, supp_rates);
- }
+ ieee80211_sta_join_ibss(sdata, &sdata->u.sta, bss);
+ ieee80211_ibss_add_sta(sdata, mgmt->bssid, mgmt->sa, supp_rates);
}
+ put_bss:
ieee80211_rx_bss_put(local, bss);
}
struct ieee802_11_elems elems;
struct ieee80211_local *local = sdata->local;
u32 changed = 0;
- bool erp_valid;
+ bool erp_valid, directed_tim;
u8 erp_value = 0;
/* Process beacon from the current BSS */
memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0)
return;
+ if (rx_status->freq != local->hw.conf.channel->center_freq)
+ return;
+
ieee80211_sta_wmm_params(local, ifsta, elems.wmm_param,
elems.wmm_param_len);
+ if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK &&
+ local->hw.conf.flags & IEEE80211_CONF_PS) {
+ directed_tim = ieee80211_check_tim(&elems, ifsta->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.erp_info && elems.erp_info_len >= 1) {
erp_valid = true;
* for the BSSID we are associated to */
regulatory_hint_11d(local->hw.wiphy,
elems.country_elem, elems.country_elem_len);
+
+ /* 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);
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)
+ size_t len)
{
struct ieee80211_local *local = sdata->local;
int tx_last_beacon;
struct ieee80211_mgmt *resp;
u8 *pos, *end;
- if (sdata->vif.type != NL80211_IFTYPE_ADHOC ||
- ifsta->state != IEEE80211_STA_MLME_IBSS_JOINED ||
+ if (ifsta->state != IEEE80211_STA_MLME_IBSS_JOINED ||
len < 24 + 2 || !ifsta->probe_resp)
return;
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;
+ if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
+ switch (fc & IEEE80211_FCTL_STYPE) {
+ case IEEE80211_STYPE_PROBE_REQ:
+ ieee80211_rx_mgmt_probe_req(sdata, ifsta, mgmt,
+ skb->len);
+ 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_ibss(sdata, ifsta, mgmt,
+ skb->len);
+ break;
+ }
+ } else { /* NL80211_IFTYPE_STATION */
+ 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, 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;
+ }
}
kfree_skb(skb);
if (ieee80211_sta_active_ibss(sdata))
return;
+ if ((sdata->u.sta.flags & IEEE80211_STA_BSSID_SET) &&
+ (!(sdata->u.sta.flags & IEEE80211_STA_AUTO_CHANNEL_SEL)))
+ 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_request_scan(sdata, ifsta->ssid, ifsta->ssid_len);
+
+ /* XXX maybe racy? */
+ if (sdata->local->scan_req)
+ return;
+
+ memcpy(sdata->local->int_scan_req.ssids[0].ssid,
+ ifsta->ssid, IEEE80211_MAX_SSID_LEN);
+ sdata->local->int_scan_req.ssids[0].ssid_len = ifsta->ssid_len;
+ ieee80211_request_scan(sdata, &sdata->local->int_scan_req);
}
netif_carrier_off(sdata->dev);
}
-
-static int ieee80211_sta_match_ssid(struct ieee80211_if_sta *ifsta,
- const char *ssid, int ssid_len)
-{
- int tmp, hidden_ssid;
-
- if (ssid_len == ifsta->ssid_len &&
- !memcmp(ifsta->ssid, ssid, ssid_len))
- return 1;
-
- if (ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL)
- return 0;
-
- hidden_ssid = 1;
- tmp = ssid_len;
- while (tmp--) {
- if (ssid[tmp] != '\0') {
- hidden_ssid = 0;
- break;
- }
- }
-
- if (hidden_ssid && (ifsta->ssid_len == ssid_len || ssid_len == 0))
- return 1;
-
- if (ssid_len == 1 && ssid[0] == ' ')
- return 1;
-
- return 0;
-}
-
static int ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata,
struct ieee80211_if_sta *ifsta)
{
struct ieee80211_local *local = sdata->local;
- struct ieee80211_bss *bss;
struct ieee80211_supported_band *sband;
- u8 bssid[ETH_ALEN], *pos;
+ u8 *pos;
+ u8 bssid[ETH_ALEN];
+ u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
+ u16 capability;
int i;
- int ret;
-
-#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
+
+ if (sdata->u.sta.flags & IEEE80211_STA_BSSID_SET) {
+ memcpy(bssid, ifsta->bssid, 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;
+ }
printk(KERN_DEBUG "%s: Creating new IBSS network, BSSID %pM\n",
sdata->dev->name, bssid);
- bss = ieee80211_rx_bss_add(local, bssid,
- local->hw.conf.channel->center_freq,
- sdata->u.sta.ssid, sdata->u.sta.ssid_len);
- if (!bss)
- return -ENOMEM;
-
- bss->band = local->hw.conf.channel->band;
- sband = local->hw.wiphy->bands[bss->band];
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
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;
+
+ capability = WLAN_CAPABILITY_IBSS;
if (sdata->default_key)
- bss->capability |= WLAN_CAPABILITY_PRIVACY;
+ capability |= WLAN_CAPABILITY_PRIVACY;
else
sdata->drop_unencrypted = 0;
- bss->supp_rates_len = sband->n_bitrates;
- pos = bss->supp_rates;
+ pos = supp_rates;
for (i = 0; i < sband->n_bitrates; i++) {
int rate = sband->bitrates[i].bitrate;
*pos++ = (u8) (rate / 5);
}
- ret = ieee80211_sta_join_ibss(sdata, ifsta, bss);
- ieee80211_rx_bss_put(local, bss);
- return ret;
+ return __ieee80211_sta_join_ibss(sdata, ifsta,
+ bssid, local->hw.conf.beacon_int,
+ local->hw.conf.channel->center_freq,
+ sband->n_bitrates, supp_rates,
+ capability);
}
{
struct ieee80211_local *local = sdata->local;
struct ieee80211_bss *bss;
- int found = 0;
- u8 bssid[ETH_ALEN];
int active_ibss;
if (ifsta->ssid_len == 0)
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->bss_lock);
- list_for_each_entry(bss, &local->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=%pM found\n", 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;
- }
- spin_unlock_bh(&local->bss_lock);
+
+ if (active_ibss)
+ return 0;
+
+ if (ifsta->flags & IEEE80211_STA_BSSID_SET)
+ bss = ieee80211_rx_bss_get(local, ifsta->bssid, 0,
+ ifsta->ssid, ifsta->ssid_len);
+ else
+ bss = (void *)cfg80211_get_ibss(local->hw.wiphy,
+ NULL,
+ ifsta->ssid, ifsta->ssid_len);
#ifdef CONFIG_MAC80211_IBSS_DEBUG
- if (found)
+ if (bss)
printk(KERN_DEBUG " sta_find_ibss: selected %pM current "
- "%pM\n", bssid, ifsta->bssid);
+ "%pM\n", bss->cbss.bssid, ifsta->bssid);
#endif /* CONFIG_MAC80211_IBSS_DEBUG */
- if (found && memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0) {
+ if (bss &&
+ (!(ifsta->flags & IEEE80211_STA_PREV_BSSID_SET) ||
+ memcmp(ifsta->bssid, bss->cbss.bssid, ETH_ALEN))) {
int ret;
- int search_freq;
-
- if (ifsta->flags & IEEE80211_STA_AUTO_CHANNEL_SEL)
- search_freq = bss->freq;
- else
- search_freq = local->hw.conf.channel->center_freq;
-
- bss = ieee80211_rx_bss_get(local, bssid, search_freq,
- ifsta->ssid, ifsta->ssid_len);
- if (!bss)
- goto dont_join;
printk(KERN_DEBUG "%s: Selected IBSS BSSID %pM"
" based on configured SSID\n",
- sdata->dev->name, bssid);
+ sdata->dev->name, bss->cbss.bssid);
+
ret = ieee80211_sta_join_ibss(sdata, ifsta, bss);
ieee80211_rx_bss_put(local, bss);
return ret;
- }
+ } else if (bss)
+ ieee80211_rx_bss_put(local, bss);
-dont_join:
#ifdef CONFIG_MAC80211_IBSS_DEBUG
printk(KERN_DEBUG " did not try to join ibss\n");
#endif /* CONFIG_MAC80211_IBSS_DEBUG */
IEEE80211_SCAN_INTERVAL)) {
printk(KERN_DEBUG "%s: Trigger new scan to find an IBSS to "
"join\n", sdata->dev->name);
- return ieee80211_request_scan(sdata, ifsta->ssid,
- ifsta->ssid_len);
+
+ /* XXX maybe racy? */
+ if (local->scan_req)
+ return -EBUSY;
+
+ memcpy(local->int_scan_req.ssids[0].ssid,
+ ifsta->ssid, IEEE80211_MAX_SSID_LEN);
+ local->int_scan_req.ssids[0].ssid_len = ifsta->ssid_len;
+ return ieee80211_request_scan(sdata, &local->int_scan_req);
} else if (ifsta->state != IEEE80211_STA_MLME_IBSS_JOINED) {
int interval = IEEE80211_SCAN_INTERVAL;
struct ieee80211_if_sta *ifsta)
{
struct ieee80211_local *local = sdata->local;
- struct ieee80211_bss *bss, *selected = NULL;
- int top_rssi = 0, freq;
-
- spin_lock_bh(&local->bss_lock);
- freq = local->oper_channel->center_freq;
- list_for_each_entry(bss, &local->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;
- }
+ struct ieee80211_bss *bss;
+ u8 *bssid = ifsta->bssid, *ssid = ifsta->ssid;
+ u8 ssid_len = ifsta->ssid_len;
+ u16 capa_mask = WLAN_CAPABILITY_ESS;
+ u16 capa_val = WLAN_CAPABILITY_ESS;
+ struct ieee80211_channel *chan = local->oper_channel;
+
+ if (ifsta->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 (selected)
- atomic_inc(&selected->users);
- spin_unlock_bh(&local->bss_lock);
- if (selected) {
- ieee80211_set_freq(sdata, selected->freq);
+ if (ifsta->flags & IEEE80211_STA_AUTO_CHANNEL_SEL)
+ chan = NULL;
+
+ if (ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL)
+ bssid = NULL;
+
+ if (ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) {
+ ssid = NULL;
+ ssid_len = 0;
+ }
+
+ bss = (void *)cfg80211_get_bss(local->hw.wiphy, chan,
+ bssid, ssid, ssid_len,
+ capa_mask, capa_val);
+
+ if (bss) {
+ ieee80211_set_freq(sdata, bss->cbss.channel->center_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);
+ 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.sta.mfp == IEEE80211_MFP_REQUIRED)
+ sdata->u.sta.flags |= IEEE80211_STA_MFP_ENABLED;
+ else
+ sdata->u.sta.flags &= ~IEEE80211_STA_MFP_ENABLED;
/* 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
+ if (!bss->last_probe_resp ||
+ time_after(jiffies, bss->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_rx_bss_put(local, bss);
ieee80211_sta_reset_auth(sdata, ifsta);
return 0;
} else {
if (ifsta->assoc_scan_tries < IEEE80211_ASSOC_SCANS_MAX_TRIES) {
ifsta->assoc_scan_tries++;
+ /* XXX maybe racy? */
+ if (local->scan_req)
+ return -1;
+ memcpy(local->int_scan_req.ssids[0].ssid,
+ ifsta->ssid, IEEE80211_MAX_SSID_LEN);
if (ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL)
- ieee80211_start_scan(sdata, NULL, 0);
+ local->int_scan_req.ssids[0].ssid_len = 0;
else
- ieee80211_start_scan(sdata, ifsta->ssid,
- ifsta->ssid_len);
+ local->int_scan_req.ssids[0].ssid_len = ifsta->ssid_len;
+ ieee80211_start_scan(sdata, &local->int_scan_req);
ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE;
set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request);
- } else
+ } else {
+ ifsta->assoc_scan_tries = 0;
ifsta->state = IEEE80211_STA_MLME_DISABLED;
+ }
}
return -1;
}
ifsta->state != IEEE80211_STA_MLME_AUTHENTICATE &&
ifsta->state != IEEE80211_STA_MLME_ASSOCIATE &&
test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request)) {
- ieee80211_start_scan(sdata, ifsta->scan_ssid,
- ifsta->scan_ssid_len);
+ ieee80211_start_scan(sdata, local->scan_req);
return;
}
ifsta = &sdata->u.sta;
INIT_WORK(&ifsta->work, ieee80211_sta_work);
+ INIT_WORK(&ifsta->chswitch_work, ieee80211_chswitch_work);
setup_timer(&ifsta->timer, ieee80211_sta_timer,
(unsigned long) sdata);
+ setup_timer(&ifsta->chswitch_timer, ieee80211_chswitch_timer,
+ (unsigned long) sdata);
skb_queue_head_init(&ifsta->skb_queue);
ifsta->capab = WLAN_CAPABILITY_ESS;
* must be callable in atomic context.
*/
struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
- u8 *bssid,u8 *addr, u64 supp_rates)
+ u8 *bssid,u8 *addr, u32 supp_rates)
{
struct ieee80211_local *local = sdata->local;
struct sta_info *sta;
memset(ifsta->ssid, 0, sizeof(ifsta->ssid));
memcpy(ifsta->ssid, ssid, len);
ifsta->ssid_len = len;
- ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET;
}
+ ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET;
+
if (len)
ifsta->flags |= IEEE80211_STA_SSID_SET;
else
ifsta->flags &= ~IEEE80211_STA_SSID_SET;
- if (sdata->vif.type == NL80211_IFTYPE_ADHOC &&
- !(ifsta->flags & IEEE80211_STA_BSSID_SET)) {
+ if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
ifsta->ibss_join_req = jiffies;
ifsta->state = IEEE80211_STA_MLME_IBSS_SEARCH;
return ieee80211_sta_find_ibss(sdata, ifsta);
int ieee80211_sta_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid)
{
struct ieee80211_if_sta *ifsta;
- int res;
ifsta = &sdata->u.sta;
- if (memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0) {
+ if (is_valid_ether_addr(bssid)) {
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) {
+ ifsta->flags |= IEEE80211_STA_BSSID_SET;
+ } else {
+ memset(ifsta->bssid, 0, ETH_ALEN);
+ ifsta->flags &= ~IEEE80211_STA_BSSID_SET;
+ }
+
+ 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_set_ssid(sdata, ifsta->ssid, ifsta->ssid_len);
}
int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata, char *ie, size_t len)
if (sdata && sdata->vif.type == NL80211_IFTYPE_ADHOC) {
ifsta = &sdata->u.sta;
- if (!(ifsta->flags & IEEE80211_STA_BSSID_SET) ||
- (!(ifsta->state == IEEE80211_STA_MLME_IBSS_JOINED) &&
- !ieee80211_sta_active_ibss(sdata)))
+ if ((!(ifsta->flags & IEEE80211_STA_PREV_BSSID_SET)) ||
+ !ieee80211_sta_active_ibss(sdata))
ieee80211_sta_find_ibss(sdata, ifsta);
}
struct ieee80211_local *local =
container_of(work, struct ieee80211_local,
dynamic_ps_enable_work);
+ struct ieee80211_sub_if_data *sdata = local->scan_sdata;
if (local->hw.conf.flags & IEEE80211_CONF_PS)
return;
- local->hw.conf.flags |= IEEE80211_CONF_PS;
+ if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
+ ieee80211_send_nullfunc(local, sdata, 1);
+ local->hw.conf.flags |= IEEE80211_CONF_PS;
ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
}
git.openpandora.org / pandora-kernel.git / blobdiff