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-rw-r--r--net/mac80211/mlme.c (renamed from net/mac80211/ieee80211_sta.c)1831
1 files changed, 1249 insertions, 582 deletions
diff --git a/net/mac80211/ieee80211_sta.c b/net/mac80211/mlme.c
index c1706855460a..6b75cb6c6300 100644
--- a/net/mac80211/ieee80211_sta.c
+++ b/net/mac80211/mlme.c
@@ -24,19 +24,22 @@
#include <linux/wireless.h>
#include <linux/random.h>
#include <linux/etherdevice.h>
+#include <linux/rtnetlink.h>
#include <net/iw_handler.h>
#include <asm/types.h>
#include <net/mac80211.h>
#include "ieee80211_i.h"
-#include "ieee80211_rate.h"
-#include "ieee80211_led.h"
+#include "rate.h"
+#include "led.h"
+#include "mesh.h"
#define IEEE80211_AUTH_TIMEOUT (HZ / 5)
#define IEEE80211_AUTH_MAX_TRIES 3
#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_RETRY_AUTH_INTERVAL (1 * HZ)
#define IEEE80211_SCAN_INTERVAL (2 * HZ)
@@ -49,12 +52,11 @@
#define IEEE80211_SCAN_RESULT_EXPIRE (10 * 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
-#define IEEE80211_FC(type, stype) cpu_to_le16(type | stype)
-
#define ERP_INFO_USE_PROTECTION BIT(1)
/* mgmt header + 1 byte action code */
@@ -74,7 +76,7 @@
static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst,
u8 *ssid, size_t ssid_len);
static struct ieee80211_sta_bss *
-ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int channel,
+ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int freq,
u8 *ssid, u8 ssid_len);
static void ieee80211_rx_bss_put(struct net_device *dev,
struct ieee80211_sta_bss *bss);
@@ -87,46 +89,8 @@ static int ieee80211_sta_config_auth(struct net_device *dev,
struct ieee80211_if_sta *ifsta);
-/* Parsed Information Elements */
-struct ieee802_11_elems {
- /* pointers to IEs */
- u8 *ssid;
- u8 *supp_rates;
- u8 *fh_params;
- u8 *ds_params;
- u8 *cf_params;
- u8 *tim;
- u8 *ibss_params;
- u8 *challenge;
- u8 *wpa;
- u8 *rsn;
- u8 *erp_info;
- u8 *ext_supp_rates;
- u8 *wmm_info;
- u8 *wmm_param;
- u8 *ht_cap_elem;
- u8 *ht_info_elem;
- /* length of them, respectively */
- u8 ssid_len;
- u8 supp_rates_len;
- u8 fh_params_len;
- u8 ds_params_len;
- u8 cf_params_len;
- u8 tim_len;
- u8 ibss_params_len;
- u8 challenge_len;
- u8 wpa_len;
- u8 rsn_len;
- u8 erp_info_len;
- u8 ext_supp_rates_len;
- u8 wmm_info_len;
- u8 wmm_param_len;
- u8 ht_cap_elem_len;
- u8 ht_info_elem_len;
-};
-
-static void ieee802_11_parse_elems(u8 *start, size_t len,
- struct ieee802_11_elems *elems)
+void ieee802_11_parse_elems(u8 *start, size_t len,
+ struct ieee802_11_elems *elems)
{
size_t left = len;
u8 *pos = start;
@@ -215,6 +179,30 @@ static void ieee802_11_parse_elems(u8 *start, size_t len,
elems->ht_info_elem = pos;
elems->ht_info_elem_len = elen;
break;
+ case WLAN_EID_MESH_ID:
+ elems->mesh_id = pos;
+ elems->mesh_id_len = elen;
+ break;
+ case WLAN_EID_MESH_CONFIG:
+ elems->mesh_config = pos;
+ elems->mesh_config_len = elen;
+ break;
+ case WLAN_EID_PEER_LINK:
+ elems->peer_link = pos;
+ elems->peer_link_len = elen;
+ break;
+ case WLAN_EID_PREQ:
+ elems->preq = pos;
+ elems->preq_len = elen;
+ break;
+ case WLAN_EID_PREP:
+ elems->prep = pos;
+ elems->prep_len = elen;
+ break;
+ case WLAN_EID_PERR:
+ elems->perr = pos;
+ elems->perr_len = elen;
+ break;
default:
break;
}
@@ -227,12 +215,61 @@ static void ieee802_11_parse_elems(u8 *start, size_t len,
static int ecw2cw(int ecw)
{
- int cw = 1;
- while (ecw > 0) {
- cw <<= 1;
- ecw--;
+ return (1 << ecw) - 1;
+}
+
+
+static void ieee80211_sta_def_wmm_params(struct net_device *dev,
+ struct ieee80211_sta_bss *bss,
+ int ibss)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ 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(&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;
+
+ qparam.cw_max = 1023;
+ qparam.txop = 0;
+
+ for (i = IEEE80211_TX_QUEUE_DATA0; i < NUM_TX_DATA_QUEUES; i++)
+ local->ops->conf_tx(local_to_hw(local),
+ i + IEEE80211_TX_QUEUE_DATA0,
+ &qparam);
+
+ if (ibss) {
+ /* IBSS uses different parameters for Beacon sending */
+ qparam.cw_min++;
+ qparam.cw_min *= 2;
+ qparam.cw_min--;
+ local->ops->conf_tx(local_to_hw(local),
+ IEEE80211_TX_QUEUE_BEACON, &qparam);
+ }
}
- return cw - 1;
}
static void ieee80211_sta_wmm_params(struct net_device *dev,
@@ -297,12 +334,13 @@ static void ieee80211_sta_wmm_params(struct net_device *dev,
params.aifs = pos[0] & 0x0f;
params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4);
params.cw_min = ecw2cw(pos[1] & 0x0f);
- /* TXOP is in units of 32 usec; burst_time in 0.1 ms */
- params.burst_time = (pos[2] | (pos[3] << 8)) * 32 / 100;
+ params.txop = pos[2] | (pos[3] << 8);
+#ifdef CONFIG_MAC80211_DEBUG
printk(KERN_DEBUG "%s: WMM queue=%d aci=%d acm=%d aifs=%d "
- "cWmin=%d cWmax=%d burst=%d\n",
+ "cWmin=%d cWmax=%d txop=%d\n",
dev->name, queue, aci, acm, params.aifs, params.cw_min,
- params.cw_max, params.burst_time);
+ 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, &params)) {
@@ -477,6 +515,7 @@ static void ieee80211_set_associated(struct net_device *dev,
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct ieee80211_local *local = sdata->local;
+ struct ieee80211_conf *conf = &local_to_hw(local)->conf;
union iwreq_data wrqu;
u32 changed = BSS_CHANGED_ASSOC;
@@ -489,31 +528,49 @@ static void ieee80211_set_associated(struct net_device *dev,
return;
bss = ieee80211_rx_bss_get(dev, ifsta->bssid,
- local->hw.conf.channel,
+ 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;
+
changed |= ieee80211_handle_bss_capability(sdata, bss);
+
ieee80211_rx_bss_put(dev, 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;
+ }
+
netif_carrier_on(dev);
ifsta->flags |= IEEE80211_STA_PREV_BSSID_SET;
memcpy(ifsta->prev_bssid, sdata->u.sta.bssid, ETH_ALEN);
memcpy(wrqu.ap_addr.sa_data, sdata->u.sta.bssid, ETH_ALEN);
ieee80211_sta_send_associnfo(dev, ifsta);
} else {
+ ieee80211_sta_tear_down_BA_sessions(dev, ifsta->bssid);
ifsta->flags &= ~IEEE80211_STA_ASSOCIATED;
-
netif_carrier_off(dev);
ieee80211_reset_erp_info(dev);
+
+ sdata->bss_conf.assoc_ht = 0;
+ sdata->bss_conf.ht_conf = NULL;
+ sdata->bss_conf.ht_bss_conf = NULL;
+
memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
}
- wrqu.ap_addr.sa_family = ARPHRD_ETHER;
- wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
ifsta->last_probe = jiffies;
ieee80211_led_assoc(local, assoc);
+ sdata->bss_conf.assoc = assoc;
ieee80211_bss_info_change_notify(sdata, changed);
+ wrqu.ap_addr.sa_family = ARPHRD_ETHER;
+ wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
}
static void ieee80211_set_disassoc(struct net_device *dev,
@@ -525,8 +582,8 @@ static void ieee80211_set_disassoc(struct net_device *dev,
ieee80211_set_associated(dev, ifsta, 0);
}
-static void ieee80211_sta_tx(struct net_device *dev, struct sk_buff *skb,
- int encrypt)
+void ieee80211_sta_tx(struct net_device *dev, struct sk_buff *skb,
+ int encrypt)
{
struct ieee80211_sub_if_data *sdata;
struct ieee80211_tx_packet_data *pkt_data;
@@ -613,7 +670,6 @@ static void ieee80211_send_assoc(struct net_device *dev,
struct ieee80211_if_sta *ifsta)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_hw_mode *mode;
struct sk_buff *skb;
struct ieee80211_mgmt *mgmt;
u8 *pos, *ies;
@@ -621,6 +677,7 @@ static void ieee80211_send_assoc(struct net_device *dev,
u16 capab;
struct ieee80211_sta_bss *bss;
int wmm = 0;
+ struct ieee80211_supported_band *sband;
skb = dev_alloc_skb(local->hw.extra_tx_headroom +
sizeof(*mgmt) + 200 + ifsta->extra_ie_len +
@@ -632,13 +689,19 @@ static void ieee80211_send_assoc(struct net_device *dev,
}
skb_reserve(skb, local->hw.extra_tx_headroom);
- mode = local->oper_hw_mode;
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+
capab = ifsta->capab;
- if (mode->mode == MODE_IEEE80211G) {
- capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME |
- WLAN_CAPABILITY_SHORT_PREAMBLE;
+
+ if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ) {
+ if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
+ capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
+ if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
+ capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
}
- bss = ieee80211_rx_bss_get(dev, ifsta->bssid, local->hw.conf.channel,
+
+ bss = ieee80211_rx_bss_get(dev, ifsta->bssid,
+ local->hw.conf.channel->center_freq,
ifsta->ssid, ifsta->ssid_len);
if (bss) {
if (bss->capability & WLAN_CAPABILITY_PRIVACY)
@@ -677,23 +740,23 @@ static void ieee80211_send_assoc(struct net_device *dev,
*pos++ = ifsta->ssid_len;
memcpy(pos, ifsta->ssid, ifsta->ssid_len);
- len = mode->num_rates;
+ len = sband->n_bitrates;
if (len > 8)
len = 8;
pos = skb_put(skb, len + 2);
*pos++ = WLAN_EID_SUPP_RATES;
*pos++ = len;
for (i = 0; i < len; i++) {
- int rate = mode->rates[i].rate;
+ int rate = sband->bitrates[i].bitrate;
*pos++ = (u8) (rate / 5);
}
- if (mode->num_rates > len) {
- pos = skb_put(skb, mode->num_rates - len + 2);
+ if (sband->n_bitrates > len) {
+ pos = skb_put(skb, sband->n_bitrates - len + 2);
*pos++ = WLAN_EID_EXT_SUPP_RATES;
- *pos++ = mode->num_rates - len;
- for (i = len; i < mode->num_rates; i++) {
- int rate = mode->rates[i].rate;
+ *pos++ = sband->n_bitrates - len;
+ for (i = len; i < sband->n_bitrates; i++) {
+ int rate = sband->bitrates[i].bitrate;
*pos++ = (u8) (rate / 5);
}
}
@@ -716,17 +779,18 @@ static void ieee80211_send_assoc(struct net_device *dev,
*pos++ = 0;
}
/* wmm support is a must to HT */
- if (wmm && mode->ht_info.ht_supported) {
- __le16 tmp = cpu_to_le16(mode->ht_info.cap);
+ if (wmm && sband->ht_info.ht_supported) {
+ __le16 tmp = cpu_to_le16(sband->ht_info.cap);
pos = skb_put(skb, sizeof(struct ieee80211_ht_cap)+2);
*pos++ = WLAN_EID_HT_CAPABILITY;
*pos++ = sizeof(struct ieee80211_ht_cap);
memset(pos, 0, sizeof(struct ieee80211_ht_cap));
memcpy(pos, &tmp, sizeof(u16));
pos += sizeof(u16);
- *pos++ = (mode->ht_info.ampdu_factor |
- (mode->ht_info.ampdu_density << 2));
- memcpy(pos, mode->ht_info.supp_mcs_set, 16);
+ /* 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);
}
kfree(ifsta->assocreq_ies);
@@ -809,7 +873,8 @@ static int ieee80211_privacy_mismatch(struct net_device *dev,
if (!ifsta || (ifsta->flags & IEEE80211_STA_MIXED_CELL))
return 0;
- bss = ieee80211_rx_bss_get(dev, ifsta->bssid, local->hw.conf.channel,
+ bss = ieee80211_rx_bss_get(dev, ifsta->bssid,
+ local->hw.conf.channel->center_freq,
ifsta->ssid, ifsta->ssid_len);
if (!bss)
return 0;
@@ -872,6 +937,8 @@ static void ieee80211_associated(struct net_device *dev,
ifsta->state = IEEE80211_ASSOCIATED;
+ rcu_read_lock();
+
sta = sta_info_get(local, ifsta->bssid);
if (!sta) {
printk(KERN_DEBUG "%s: No STA entry for own AP %s\n",
@@ -887,7 +954,7 @@ static void ieee80211_associated(struct net_device *dev,
"range\n",
dev->name, print_mac(mac, ifsta->bssid));
disassoc = 1;
- sta_info_free(sta);
+ sta_info_unlink(&sta);
} else
ieee80211_send_probe_req(dev, ifsta->bssid,
local->scan_ssid,
@@ -903,8 +970,13 @@ static void ieee80211_associated(struct net_device *dev,
ifsta->ssid_len);
}
}
- sta_info_put(sta);
}
+
+ rcu_read_unlock();
+
+ if (disassoc && sta)
+ sta_info_destroy(sta);
+
if (disassoc) {
ifsta->state = IEEE80211_DISABLED;
ieee80211_set_associated(dev, ifsta, 0);
@@ -919,7 +991,7 @@ static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst,
u8 *ssid, size_t ssid_len)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_hw_mode *mode;
+ struct ieee80211_supported_band *sband;
struct sk_buff *skb;
struct ieee80211_mgmt *mgmt;
u8 *pos, *supp_rates, *esupp_rates = NULL;
@@ -953,11 +1025,10 @@ static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst,
supp_rates = skb_put(skb, 2);
supp_rates[0] = WLAN_EID_SUPP_RATES;
supp_rates[1] = 0;
- mode = local->oper_hw_mode;
- for (i = 0; i < mode->num_rates; i++) {
- struct ieee80211_rate *rate = &mode->rates[i];
- if (!(rate->flags & IEEE80211_RATE_SUPPORTED))
- continue;
+ 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]++;
@@ -970,7 +1041,7 @@ static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst,
pos = skb_put(skb, 1);
supp_rates[1]++;
}
- *pos = rate->rate / 5;
+ *pos = rate->bitrate / 5;
}
ieee80211_sta_tx(dev, skb, 0);
@@ -1065,6 +1136,58 @@ static void ieee80211_send_addba_resp(struct net_device *dev, u8 *da, u16 tid,
return;
}
+void ieee80211_send_addba_request(struct net_device *dev, const u8 *da,
+ u16 tid, u8 dialog_token, u16 start_seq_num,
+ u16 agg_size, u16 timeout)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ 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 + 1 +
+ sizeof(mgmt->u.action.u.addba_req));
+
+
+ if (!skb) {
+ printk(KERN_ERR "%s: failed to allocate buffer "
+ "for addba request frame\n", 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, dev->dev_addr, ETH_ALEN);
+ if (sdata->vif.type == IEEE80211_IF_TYPE_AP)
+ memcpy(mgmt->bssid, dev->dev_addr, ETH_ALEN);
+ else
+ memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
+
+ mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
+ IEEE80211_STYPE_ACTION);
+
+ skb_put(skb, 1 + sizeof(mgmt->u.action.u.addba_req));
+
+ mgmt->u.action.category = WLAN_CATEGORY_BACK;
+ mgmt->u.action.u.addba_req.action_code = WLAN_ACTION_ADDBA_REQ;
+
+ 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 */
+
+ mgmt->u.action.u.addba_req.capab = cpu_to_le16(capab);
+
+ 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);
+
+ ieee80211_sta_tx(dev, skb, 0);
+}
+
static void ieee80211_sta_process_addba_request(struct net_device *dev,
struct ieee80211_mgmt *mgmt,
size_t len)
@@ -1079,9 +1202,13 @@ static void ieee80211_sta_process_addba_request(struct net_device *dev,
int ret = -EOPNOTSUPP;
DECLARE_MAC_BUF(mac);
+ rcu_read_lock();
+
sta = sta_info_get(local, mgmt->sa);
- if (!sta)
+ if (!sta) {
+ rcu_read_unlock();
return;
+ }
/* extract session parameters from addba request frame */
dialog_token = mgmt->u.action.u.addba_req.dialog_token;
@@ -1105,7 +1232,7 @@ static void ieee80211_sta_process_addba_request(struct net_device *dev,
status = WLAN_STATUS_INVALID_QOS_PARAM;
#ifdef CONFIG_MAC80211_HT_DEBUG
if (net_ratelimit())
- printk(KERN_DEBUG "Block Ack Req with bad params from "
+ 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);
@@ -1114,26 +1241,45 @@ static void ieee80211_sta_process_addba_request(struct net_device *dev,
}
/* determine default buffer size */
if (buf_size == 0) {
- struct ieee80211_hw_mode *mode = conf->mode;
+ struct ieee80211_supported_band *sband;
+
+ sband = local->hw.wiphy->bands[conf->channel->band];
buf_size = IEEE80211_MIN_AMPDU_BUF;
- buf_size = buf_size << mode->ht_info.ampdu_factor;
+ buf_size = buf_size << sband->ht_info.ampdu_factor;
}
- tid_agg_rx = &sta->ampdu_mlme.tid_rx[tid];
/* examine state machine */
spin_lock_bh(&sta->ampdu_mlme.ampdu_rx);
- if (tid_agg_rx->state != HT_AGG_STATE_IDLE) {
+ if (sta->ampdu_mlme.tid_state_rx[tid] != HT_AGG_STATE_IDLE) {
#ifdef CONFIG_MAC80211_HT_DEBUG
if (net_ratelimit())
- printk(KERN_DEBUG "unexpected Block Ack Req from "
+ 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;
}
+ /* 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]) {
+ if (net_ratelimit())
+ printk(KERN_ERR "allocate rx mlme to tid %d failed\n",
+ tid);
+ 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_buf *), GFP_ATOMIC);
@@ -1141,6 +1287,7 @@ static void ieee80211_sta_process_addba_request(struct net_device *dev,
if (net_ratelimit())
printk(KERN_ERR "can not allocate reordering buffer "
"to tid %d\n", tid);
+ kfree(sta->ampdu_mlme.tid_rx[tid]);
goto end;
}
memset(tid_agg_rx->reorder_buf, 0,
@@ -1148,18 +1295,20 @@ static void ieee80211_sta_process_addba_request(struct net_device *dev,
if (local->ops->ampdu_action)
ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_RX_START,
- sta->addr, tid, start_seq_num);
+ sta->addr, tid, &start_seq_num);
#ifdef CONFIG_MAC80211_HT_DEBUG
- printk(KERN_DEBUG "Rx A-MPDU on tid %d result %d", tid, ret);
+ 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 */
- tid_agg_rx->state = HT_AGG_STATE_OPERATIONAL;
+ 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;
@@ -1171,13 +1320,89 @@ end:
spin_unlock_bh(&sta->ampdu_mlme.ampdu_rx);
end_no_lock:
- ieee80211_send_addba_resp(sta->dev, sta->addr, tid, dialog_token,
- status, 1, buf_size, timeout);
- sta_info_put(sta);
+ ieee80211_send_addba_resp(sta->sdata->dev, sta->addr, tid,
+ dialog_token, status, 1, buf_size, timeout);
+ rcu_read_unlock();
}
-static void ieee80211_send_delba(struct net_device *dev, const u8 *da, u16 tid,
- u16 initiator, u16 reason_code)
+static void ieee80211_sta_process_addba_resp(struct net_device *dev,
+ struct ieee80211_mgmt *mgmt,
+ size_t len)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_hw *hw = &local->hw;
+ struct sta_info *sta;
+ u16 capab;
+ u16 tid;
+ u8 *state;
+
+ rcu_read_lock();
+
+ sta = sta_info_get(local, mgmt->sa);
+ if (!sta) {
+ rcu_read_unlock();
+ return;
+ }
+
+ capab = le16_to_cpu(mgmt->u.action.u.addba_resp.capab);
+ tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
+
+ state = &sta->ampdu_mlme.tid_state_tx[tid];
+
+ spin_lock_bh(&sta->ampdu_mlme.ampdu_tx);
+
+ if (!(*state & HT_ADDBA_REQUESTED_MSK)) {
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
+ printk(KERN_DEBUG "state not HT_ADDBA_REQUESTED_MSK:"
+ "%d\n", *state);
+ goto addba_resp_exit;
+ }
+
+ if (mgmt->u.action.u.addba_resp.dialog_token !=
+ sta->ampdu_mlme.tid_tx[tid]->dialog_token) {
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
+#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;
+ }
+
+ 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) {
+ if (*state & HT_ADDBA_RECEIVED_MSK)
+ printk(KERN_DEBUG "double addBA response\n");
+
+ *state |= HT_ADDBA_RECEIVED_MSK;
+ sta->ampdu_mlme.addba_req_num[tid] = 0;
+
+ if (*state == HT_AGG_STATE_OPERATIONAL) {
+ printk(KERN_DEBUG "Aggregation on for tid %d \n", tid);
+ ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]);
+ }
+
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
+ printk(KERN_DEBUG "recipient accepted agg: tid %d \n", tid);
+ } else {
+ printk(KERN_DEBUG "recipient rejected agg: tid %d \n", tid);
+
+ 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->ampdu_mlme.ampdu_tx);
+ ieee80211_stop_tx_ba_session(hw, sta->addr, tid,
+ WLAN_BACK_INITIATOR);
+ }
+
+addba_resp_exit:
+ rcu_read_unlock();
+}
+
+void ieee80211_send_delba(struct net_device *dev, const u8 *da, u16 tid,
+ u16 initiator, u16 reason_code)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
@@ -1227,58 +1452,71 @@ void ieee80211_sta_stop_rx_ba_session(struct net_device *dev, u8 *ra, u16 tid,
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)
+ if (!sta) {
+ rcu_read_unlock();
return;
+ }
/* check if TID is in operational state */
spin_lock_bh(&sta->ampdu_mlme.ampdu_rx);
- if (sta->ampdu_mlme.tid_rx[tid].state
+ if (sta->ampdu_mlme.tid_state_rx[tid]
!= HT_AGG_STATE_OPERATIONAL) {
spin_unlock_bh(&sta->ampdu_mlme.ampdu_rx);
- sta_info_put(sta);
+ rcu_read_unlock();
return;
}
- sta->ampdu_mlme.tid_rx[tid].state =
+ sta->ampdu_mlme.tid_state_rx[tid] =
HT_AGG_STATE_REQ_STOP_BA_MSK |
(initiator << HT_AGG_STATE_INITIATOR_SHIFT);
- spin_unlock_bh(&sta->ampdu_mlme.ampdu_rx);
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_rx);
/* 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, EINVAL);
+ ra, tid, NULL);
if (ret)
printk(KERN_DEBUG "HW problem - can not stop rx "
"aggergation 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);
+ 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(dev, 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]) {
+ 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;
+ 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;
}
}
- kfree(sta->ampdu_mlme.tid_rx[tid].reorder_buf);
+ /* 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;
- sta->ampdu_mlme.tid_rx[tid].state = HT_AGG_STATE_IDLE;
- sta_info_put(sta);
+ rcu_read_unlock();
}
+
static void ieee80211_sta_process_delba(struct net_device *dev,
struct ieee80211_mgmt *mgmt, size_t len)
{
@@ -1288,9 +1526,13 @@ static void ieee80211_sta_process_delba(struct net_device *dev,
u16 initiator;
DECLARE_MAC_BUF(mac);
+ rcu_read_lock();
+
sta = sta_info_get(local, mgmt->sa);
- if (!sta)
+ if (!sta) {
+ rcu_read_unlock();
return;
+ }
params = le16_to_cpu(mgmt->u.action.u.delba.params);
tid = (params & IEEE80211_DELBA_PARAM_TID_MASK) >> 12;
@@ -1298,27 +1540,87 @@ static void ieee80211_sta_process_delba(struct net_device *dev,
#ifdef CONFIG_MAC80211_HT_DEBUG
if (net_ratelimit())
- printk(KERN_DEBUG "delba from %s on tid %d reason code %d\n",
- print_mac(mac, mgmt->sa), tid,
+ 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(dev, sta->addr, tid,
WLAN_BACK_INITIATOR, 0);
- sta_info_put(sta);
+ else { /* WLAN_BACK_RECIPIENT */
+ spin_lock_bh(&sta->ampdu_mlme.ampdu_tx);
+ sta->ampdu_mlme.tid_state_tx[tid] =
+ HT_AGG_STATE_OPERATIONAL;
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
+ ieee80211_stop_tx_ba_session(&local->hw, sta->addr, tid,
+ WLAN_BACK_RECIPIENT);
+ }
+ rcu_read_unlock();
}
/*
- * After receiving Block Ack Request (BAR) we activated a
- * timer after each frame arrives from the originator.
+ * 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)
+{
+ /* 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 = *(int *)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 sta_info *sta;
+ u8 *state;
+
+ rcu_read_lock();
+
+ sta = sta_info_get(local, temp_sta->addr);
+ if (!sta) {
+ rcu_read_unlock();
+ return;
+ }
+
+ state = &sta->ampdu_mlme.tid_state_tx[tid];
+ /* check if the TID waits for addBA response */
+ spin_lock_bh(&sta->ampdu_mlme.ampdu_tx);
+ if (!(*state & HT_ADDBA_REQUESTED_MSK)) {
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
+ *state = HT_AGG_STATE_IDLE;
+ printk(KERN_DEBUG "timer expired on tid %d but we are not "
+ "expecting addBA response there", tid);
+ goto timer_expired_exit;
+ }
+
+ printk(KERN_DEBUG "addBA response timer expired on tid %d\n", tid);
+
+ /* go through the state check in stop_BA_session */
+ *state = HT_AGG_STATE_OPERATIONAL;
+ spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx);
+ ieee80211_stop_tx_ba_session(hw, temp_sta->addr, tid,
+ WLAN_BACK_INITIATOR);
+
+timer_expired_exit:
+ rcu_read_unlock();
+}
+
+/*
+ * 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.
*/
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 verious sta_info are needed here, so init
- * flow in sta_info_add gives the TID as data, while the timer_to_id
+ * 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;
@@ -1326,11 +1628,24 @@ void sta_rx_agg_session_timer_expired(unsigned long data)
timer_to_tid[0]);
printk(KERN_DEBUG "rx session timer expired on tid %d\n", (u16)*ptid);
- ieee80211_sta_stop_rx_ba_session(sta->dev, sta->addr, (u16)*ptid,
- WLAN_BACK_TIMER,
+ ieee80211_sta_stop_rx_ba_session(sta->sdata->dev, sta->addr,
+ (u16)*ptid, WLAN_BACK_TIMER,
WLAN_REASON_QSTA_TIMEOUT);
}
+void ieee80211_sta_tear_down_BA_sessions(struct net_device *dev, u8 *addr)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ int i;
+
+ 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(dev, addr, i,
+ WLAN_BACK_RECIPIENT,
+ WLAN_REASON_QSTA_LEAVE_QBSS);
+ }
+}
static void ieee80211_rx_mgmt_auth(struct net_device *dev,
struct ieee80211_if_sta *ifsta,
@@ -1557,15 +1872,16 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
{
struct ieee80211_local *local = sdata->local;
struct net_device *dev = sdata->dev;
- struct ieee80211_hw_mode *mode;
+ struct ieee80211_supported_band *sband;
struct sta_info *sta;
- u32 rates;
+ u64 rates, basic_rates;
u16 capab_info, status_code, aid;
struct ieee802_11_elems elems;
struct ieee80211_bss_conf *bss_conf = &sdata->bss_conf;
u8 *pos;
int i, j;
DECLARE_MAC_BUF(mac);
+ bool have_higher_than_11mbit = false;
/* AssocResp and ReassocResp have identical structure, so process both
* of them in this function. */
@@ -1635,22 +1951,23 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
if (ifsta->assocresp_ies)
memcpy(ifsta->assocresp_ies, pos, ifsta->assocresp_ies_len);
- /* set AID, ieee80211_set_associated() will tell the driver */
- bss_conf->aid = aid;
- ieee80211_set_associated(dev, ifsta, 1);
+ rcu_read_lock();
/* Add STA entry for the AP */
sta = sta_info_get(local, ifsta->bssid);
if (!sta) {
struct ieee80211_sta_bss *bss;
- sta = sta_info_add(local, dev, ifsta->bssid, GFP_KERNEL);
+ int err;
+
+ sta = sta_info_alloc(sdata, ifsta->bssid, GFP_ATOMIC);
if (!sta) {
- printk(KERN_DEBUG "%s: failed to add STA entry for the"
- " AP\n", dev->name);
+ printk(KERN_DEBUG "%s: failed to alloc STA entry for"
+ " the AP\n", dev->name);
+ rcu_read_unlock();
return;
}
bss = ieee80211_rx_bss_get(dev, ifsta->bssid,
- local->hw.conf.channel,
+ local->hw.conf.channel->center_freq,
ifsta->ssid, ifsta->ssid_len);
if (bss) {
sta->last_rssi = bss->rssi;
@@ -1658,50 +1975,97 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
sta->last_noise = bss->noise;
ieee80211_rx_bss_put(dev, bss);
}
+
+ err = sta_info_insert(sta);
+ if (err) {
+ printk(KERN_DEBUG "%s: failed to insert STA entry for"
+ " the AP (error %d)\n", dev->name, err);
+ rcu_read_unlock();
+ return;
+ }
}
- sta->dev = dev;
- sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_ASSOC_AP;
+ /*
+ * FIXME: Do we really need to update the sta_info's information here?
+ * We already know about the AP (we found it in our list) so it
+ * should already be filled with the right info, no?
+ * As is stands, all this is racy because typically we assume
+ * the information that is filled in here (except flags) doesn't
+ * change while a STA structure is alive. As such, it should move
+ * to between the sta_info_alloc() and sta_info_insert() above.
+ */
+
+ sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_ASSOC_AP |
+ WLAN_STA_AUTHORIZED;
rates = 0;
- mode = local->oper_hw_mode;
+ basic_rates = 0;
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+
for (i = 0; i < elems.supp_rates_len; i++) {
int rate = (elems.supp_rates[i] & 0x7f) * 5;
- for (j = 0; j < mode->num_rates; j++)
- if (mode->rates[j].rate == rate)
+
+ 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.supp_rates[i] & 0x80)
+ basic_rates |= BIT(j);
+ }
}
+
for (i = 0; i < elems.ext_supp_rates_len; i++) {
int rate = (elems.ext_supp_rates[i] & 0x7f) * 5;
- for (j = 0; j < mode->num_rates; j++)
- if (mode->rates[j].rate == rate)
+
+ 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 = rates;
- if (elems.ht_cap_elem && elems.ht_info_elem && elems.wmm_param &&
- local->ops->conf_ht) {
- struct ieee80211_ht_bss_info bss_info;
+ 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) {
+ 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_hw_config_ht(local, 1, &sta->ht_info, &bss_info);
+ ieee80211_handle_ht(local, 1, &sta->ht_info, &bss_info);
}
rate_control_rate_init(sta, local);
if (elems.wmm_param && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) {
sta->flags |= WLAN_STA_WME;
+ rcu_read_unlock();
ieee80211_sta_wmm_params(dev, ifsta, elems.wmm_param,
elems.wmm_param_len);
- }
-
+ } else
+ rcu_read_unlock();
- sta_info_put(sta);
+ /* 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(dev, ifsta, 1);
ieee80211_associated(dev, ifsta);
}
@@ -1712,8 +2076,16 @@ static void __ieee80211_rx_bss_hash_add(struct net_device *dev,
struct ieee80211_sta_bss *bss)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- bss->hnext = local->sta_bss_hash[STA_HASH(bss->bssid)];
- local->sta_bss_hash[STA_HASH(bss->bssid)] = 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;
}
@@ -1740,7 +2112,7 @@ static void __ieee80211_rx_bss_hash_del(struct net_device *dev,
static struct ieee80211_sta_bss *
-ieee80211_rx_bss_add(struct net_device *dev, u8 *bssid, int channel,
+ieee80211_rx_bss_add(struct net_device *dev, u8 *bssid, int freq,
u8 *ssid, u8 ssid_len)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
@@ -1752,7 +2124,7 @@ ieee80211_rx_bss_add(struct net_device *dev, u8 *bssid, int channel,
atomic_inc(&bss->users);
atomic_inc(&bss->users);
memcpy(bss->bssid, bssid, ETH_ALEN);
- bss->channel = channel;
+ bss->freq = freq;
if (ssid && ssid_len <= IEEE80211_MAX_SSID_LEN) {
memcpy(bss->ssid, ssid, ssid_len);
bss->ssid_len = ssid_len;
@@ -1766,9 +2138,8 @@ ieee80211_rx_bss_add(struct net_device *dev, u8 *bssid, int channel,
return bss;
}
-
static struct ieee80211_sta_bss *
-ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int channel,
+ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int freq,
u8 *ssid, u8 ssid_len)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
@@ -1777,8 +2148,9 @@ ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int channel,
spin_lock_bh(&local->sta_bss_lock);
bss = local->sta_bss_hash[STA_HASH(bssid)];
while (bss) {
- if (!memcmp(bss->bssid, bssid, ETH_ALEN) &&
- bss->channel == channel &&
+ 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);
@@ -1790,6 +2162,75 @@ ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int channel,
return bss;
}
+#ifdef CONFIG_MAC80211_MESH
+static struct ieee80211_sta_bss *
+ieee80211_rx_mesh_bss_get(struct net_device *dev, u8 *mesh_id, int mesh_id_len,
+ u8 *mesh_cfg, int freq)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ 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 net_device *dev, u8 *mesh_id, int mesh_id_len,
+ u8 *mesh_cfg, int mesh_config_len, int freq)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ 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(dev, bss);
+ spin_unlock_bh(&local->sta_bss_lock);
+ return bss;
+}
+#endif
static void ieee80211_rx_bss_free(struct ieee80211_sta_bss *bss)
{
@@ -1797,6 +2238,8 @@ static void ieee80211_rx_bss_free(struct ieee80211_sta_bss *bss)
kfree(bss->rsn_ie);
kfree(bss->wmm_ie);
kfree(bss->ht_ie);
+ kfree(bss_mesh_id(bss));
+ kfree(bss_mesh_cfg(bss));
kfree(bss);
}
@@ -1834,6 +2277,204 @@ void ieee80211_rx_bss_list_deinit(struct net_device *dev)
}
+static int ieee80211_sta_join_ibss(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta,
+ struct ieee80211_sta_bss *bss)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ int res, rates, i, j;
+ struct sk_buff *skb;
+ struct ieee80211_mgmt *mgmt;
+ struct ieee80211_tx_control control;
+ struct rate_selection ratesel;
+ u8 *pos;
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_supported_band *sband;
+
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ /* 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));
+ }
+ memcpy(ifsta->bssid, bss->bssid, ETH_ALEN);
+ res = ieee80211_if_config(dev);
+ if (res)
+ return res;
+
+ local->hw.conf.beacon_int = bss->beacon_int >= 10 ? bss->beacon_int : 10;
+
+ sdata->drop_unencrypted = bss->capability &
+ WLAN_CAPABILITY_PRIVACY ? 1 : 0;
+
+ res = ieee80211_set_freq(local, bss->freq);
+
+ if (local->oper_channel->flags & IEEE80211_CHAN_NO_IBSS) {
+ printk(KERN_DEBUG "%s: IBSS not allowed on frequency "
+ "%d MHz\n", dev->name, local->oper_channel->center_freq);
+ return -1;
+ }
+
+ /* Set beacon template */
+ skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400);
+ do {
+ if (!skb)
+ break;
+
+ skb_reserve(skb, local->hw.extra_tx_headroom);
+
+ mgmt = (struct ieee80211_mgmt *)
+ skb_put(skb, 24 + sizeof(mgmt->u.beacon));
+ memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon));
+ mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
+ IEEE80211_STYPE_BEACON);
+ memset(mgmt->da, 0xff, ETH_ALEN);
+ memcpy(mgmt->sa, 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.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);
+ }
+
+ 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 (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);
+ }
+
+ memset(&control, 0, sizeof(control));
+ rate_control_get_rate(dev, sband, skb, &ratesel);
+ if (!ratesel.rate) {
+ printk(KERN_DEBUG "%s: Failed to determine TX rate "
+ "for IBSS beacon\n", dev->name);
+ break;
+ }
+ control.vif = &sdata->vif;
+ control.tx_rate = ratesel.rate;
+ if (sdata->bss_conf.use_short_preamble &&
+ ratesel.rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
+ control.flags |= IEEE80211_TXCTL_SHORT_PREAMBLE;
+ control.antenna_sel_tx = local->hw.conf.antenna_sel_tx;
+ control.flags |= IEEE80211_TXCTL_NO_ACK;
+ control.retry_limit = 1;
+
+ ifsta->probe_resp = skb_copy(skb, GFP_ATOMIC);
+ if (ifsta->probe_resp) {
+ mgmt = (struct ieee80211_mgmt *)
+ ifsta->probe_resp->data;
+ mgmt->frame_control =
+ IEEE80211_FC(IEEE80211_FTYPE_MGMT,
+ IEEE80211_STYPE_PROBE_RESP);
+ } else {
+ printk(KERN_DEBUG "%s: Could not allocate ProbeResp "
+ "template for IBSS\n", dev->name);
+ }
+
+ if (local->ops->beacon_update &&
+ local->ops->beacon_update(local_to_hw(local),
+ skb, &control) == 0) {
+ printk(KERN_DEBUG "%s: Configured IBSS beacon "
+ "template\n", dev->name);
+ skb = NULL;
+ }
+
+ 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(dev, bss, 1);
+ } while (0);
+
+ if (skb) {
+ printk(KERN_DEBUG "%s: Failed to configure IBSS beacon "
+ "template\n", dev->name);
+ dev_kfree_skb(skb);
+ }
+
+ ifsta->state = IEEE80211_IBSS_JOINED;
+ mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL);
+
+ ieee80211_rx_bss_put(dev, bss);
+
+ return res;
+}
+
+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];
+
+ if (!sband) {
+ WARN_ON(1);
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+ }
+
+ 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;
+}
+
+
static void ieee80211_rx_bss_info(struct net_device *dev,
struct ieee80211_mgmt *mgmt,
size_t len,
@@ -1843,11 +2484,12 @@ static void ieee80211_rx_bss_info(struct net_device *dev,
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
struct ieee802_11_elems elems;
size_t baselen;
- int channel, clen;
+ int freq, clen;
struct ieee80211_sta_bss *bss;
struct sta_info *sta;
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- u64 timestamp;
+ u64 beacon_timestamp, rx_timestamp;
+ struct ieee80211_channel *channel;
DECLARE_MAC_BUF(mac);
DECLARE_MAC_BUF(mac2);
@@ -1864,104 +2506,77 @@ static void ieee80211_rx_bss_info(struct net_device *dev,
if (baselen > len)
return;
- timestamp = le64_to_cpu(mgmt->u.beacon.timestamp);
+ beacon_timestamp = le64_to_cpu(mgmt->u.beacon.timestamp);
+ ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems);
- if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && beacon &&
- memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0) {
-#ifdef CONFIG_MAC80211_IBSS_DEBUG
- static unsigned long last_tsf_debug = 0;
- u64 tsf;
- if (local->ops->get_tsf)
- tsf = local->ops->get_tsf(local_to_hw(local));
- else
- tsf = -1LLU;
- if (time_after(jiffies, last_tsf_debug + 5 * HZ)) {
- 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)tsf,
- (unsigned long long)timestamp,
- (unsigned long long)(tsf - timestamp),
- jiffies);
- last_tsf_debug = jiffies;
- }
-#endif /* CONFIG_MAC80211_IBSS_DEBUG */
+ if (ieee80211_vif_is_mesh(&sdata->vif) && elems.mesh_id &&
+ elems.mesh_config && mesh_matches_local(&elems, dev)) {
+ u64 rates = ieee80211_sta_get_rates(local, &elems,
+ rx_status->band);
+
+ mesh_neighbour_update(mgmt->sa, rates, dev,
+ mesh_peer_accepts_plinks(&elems, dev));
}
- ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems);
+ rcu_read_lock();
if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && elems.supp_rates &&
memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0 &&
(sta = sta_info_get(local, mgmt->sa))) {
- struct ieee80211_hw_mode *mode;
- struct ieee80211_rate *rates;
- size_t num_rates;
- u32 supp_rates, prev_rates;
- int i, j;
-
- mode = local->sta_sw_scanning ?
- local->scan_hw_mode : local->oper_hw_mode;
-
- if (local->sta_hw_scanning) {
- /* search for the correct mode matches the beacon */
- list_for_each_entry(mode, &local->modes_list, list)
- if (mode->mode == rx_status->phymode)
- break;
-
- if (mode == NULL)
- mode = local->oper_hw_mode;
- }
- rates = mode->rates;
- num_rates = mode->num_rates;
-
- 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 (rates[j].rate == own_rate)
- supp_rates |= BIT(j);
- }
+ u64 prev_rates;
+ u64 supp_rates = ieee80211_sta_get_rates(local, &elems,
+ rx_status->band);
- prev_rates = sta->supp_rates;
- sta->supp_rates &= supp_rates;
- if (sta->supp_rates == 0) {
+ prev_rates = sta->supp_rates[rx_status->band];
+ sta->supp_rates[rx_status->band] &= supp_rates;
+ if (sta->supp_rates[rx_status->band] == 0) {
/* No matching rates - this should not really happen.
* Make sure that at least one rate is marked
* supported to avoid issues with TX rate ctrl. */
- sta->supp_rates = sdata->u.sta.supp_rates_bits;
+ sta->supp_rates[rx_status->band] =
+ sdata->u.sta.supp_rates_bits[rx_status->band];
}
- if (sta->supp_rates != prev_rates) {
+ if (sta->supp_rates[rx_status->band] != prev_rates) {
printk(KERN_DEBUG "%s: updated supp_rates set for "
- "%s based on beacon info (0x%x & 0x%x -> "
- "0x%x)\n",
- dev->name, print_mac(mac, sta->addr), prev_rates,
- supp_rates, sta->supp_rates);
+ "%s based on beacon info (0x%llx & 0x%llx -> "
+ "0x%llx)\n",
+ dev->name, print_mac(mac, sta->addr),
+ (unsigned long long) prev_rates,
+ (unsigned long long) supp_rates,
+ (unsigned long long) sta->supp_rates[rx_status->band]);
}
- sta_info_put(sta);
}
- if (!elems.ssid)
- return;
+ rcu_read_unlock();
if (elems.ds_params && elems.ds_params_len == 1)
- channel = elems.ds_params[0];
+ freq = ieee80211_channel_to_frequency(elems.ds_params[0]);
else
- channel = rx_status->channel;
+ freq = rx_status->freq;
- bss = ieee80211_rx_bss_get(dev, mgmt->bssid, channel,
- elems.ssid, elems.ssid_len);
- if (!bss) {
- bss = ieee80211_rx_bss_add(dev, mgmt->bssid, channel,
+ channel = ieee80211_get_channel(local->hw.wiphy, freq);
+
+ if (!channel || channel->flags & IEEE80211_CHAN_DISABLED)
+ return;
+
+#ifdef CONFIG_MAC80211_MESH
+ if (elems.mesh_config)
+ bss = ieee80211_rx_mesh_bss_get(dev, elems.mesh_id,
+ elems.mesh_id_len, elems.mesh_config, freq);
+ else
+#endif
+ bss = ieee80211_rx_bss_get(dev, mgmt->bssid, freq,
elems.ssid, elems.ssid_len);
+ if (!bss) {
+#ifdef CONFIG_MAC80211_MESH
+ if (elems.mesh_config)
+ bss = ieee80211_rx_mesh_bss_add(dev, elems.mesh_id,
+ elems.mesh_id_len, elems.mesh_config,
+ elems.mesh_config_len, freq);
+ else
+#endif
+ bss = ieee80211_rx_bss_add(dev, mgmt->bssid, freq,
+ elems.ssid, elems.ssid_len);
if (!bss)
return;
} else {
@@ -1973,18 +2588,29 @@ static void ieee80211_rx_bss_info(struct net_device *dev,
#endif
}
- if (bss->probe_resp && beacon) {
- /* Do not allow beacon to override data from Probe Response. */
- ieee80211_rx_bss_put(dev, bss);
- return;
- }
-
/* 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;
}
+ if (elems.ht_cap_elem &&
+ (!bss->ht_ie || bss->ht_ie_len != elems.ht_cap_elem_len ||
+ memcmp(bss->ht_ie, elems.ht_cap_elem, elems.ht_cap_elem_len))) {
+ kfree(bss->ht_ie);
+ bss->ht_ie = kmalloc(elems.ht_cap_elem_len + 2, GFP_ATOMIC);
+ if (bss->ht_ie) {
+ memcpy(bss->ht_ie, elems.ht_cap_elem - 2,
+ elems.ht_cap_elem_len + 2);
+ bss->ht_ie_len = elems.ht_cap_elem_len + 2;
+ } else
+ bss->ht_ie_len = 0;
+ } else if (!elems.ht_cap_elem && bss->ht_ie) {
+ kfree(bss->ht_ie);
+ bss->ht_ie = NULL;
+ bss->ht_ie_len = 0;
+ }
+
bss->beacon_int = le16_to_cpu(mgmt->u.beacon.beacon_int);
bss->capability = le16_to_cpu(mgmt->u.beacon.capab_info);
@@ -2006,6 +2632,26 @@ static void ieee80211_rx_bss_info(struct net_device *dev,
bss->supp_rates_len += clen;
}
+ bss->band = rx_status->band;
+
+ bss->timestamp = beacon_timestamp;
+ bss->last_update = jiffies;
+ bss->rssi = rx_status->ssi;
+ bss->signal = rx_status->signal;
+ bss->noise = rx_status->noise;
+ if (!beacon && !bss->probe_resp)
+ bss->probe_resp = true;
+
+ /*
+ * 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->probe_resp && beacon) {
+ ieee80211_rx_bss_put(dev, bss);
+ return;
+ }
+
if (elems.wpa &&
(!bss->wpa_ie || bss->wpa_ie_len != elems.wpa_len ||
memcmp(bss->wpa_ie, elems.wpa, elems.wpa_len))) {
@@ -2038,6 +2684,20 @@ static void ieee80211_rx_bss_info(struct net_device *dev,
bss->rsn_ie_len = 0;
}
+ /*
+ * Cf.
+ * http://www.wipo.int/pctdb/en/wo.jsp?wo=2007047181&IA=WO2007047181&DISPLAY=DESC
+ *
+ * quoting:
+ *
+ * In particular, "Wi-Fi CERTIFIED for WMM - Support for Multimedia
+ * Applications with Quality of Service in Wi-Fi Networks," Wi- Fi
+ * Alliance (September 1, 2004) is incorporated by reference herein.
+ * The inclusion of the WMM Parameters in probe responses and
+ * association responses is mandatory for WMM enabled networks. The
+ * inclusion of the WMM Parameters in beacons, however, is optional.
+ */
+
if (elems.wmm_param &&
(!bss->wmm_ie || bss->wmm_ie_len != elems.wmm_param_len ||
memcmp(bss->wmm_ie, elems.wmm_param, elems.wmm_param_len))) {
@@ -2054,44 +2714,62 @@ static void ieee80211_rx_bss_info(struct net_device *dev,
bss->wmm_ie = NULL;
bss->wmm_ie_len = 0;
}
- if (elems.ht_cap_elem &&
- (!bss->ht_ie || bss->ht_ie_len != elems.ht_cap_elem_len ||
- memcmp(bss->ht_ie, elems.ht_cap_elem, elems.ht_cap_elem_len))) {
- kfree(bss->ht_ie);
- bss->ht_ie = kmalloc(elems.ht_cap_elem_len + 2, GFP_ATOMIC);
- if (bss->ht_ie) {
- memcpy(bss->ht_ie, elems.ht_cap_elem - 2,
- elems.ht_cap_elem_len + 2);
- bss->ht_ie_len = elems.ht_cap_elem_len + 2;
- } else
- bss->ht_ie_len = 0;
- } else if (!elems.ht_cap_elem && bss->ht_ie) {
- kfree(bss->ht_ie);
- bss->ht_ie = NULL;
- bss->ht_ie_len = 0;
+
+ /* 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[rx_status->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) {
+#ifndef CONFIG_MAC80211_IBSS_DEBUG
+ if (net_ratelimit())
+#endif
+ printk(KERN_DEBUG "%s: beacon TSF higher than "
+ "local TSF - IBSS merge with BSSID %s\n",
+ dev->name, print_mac(mac, mgmt->bssid));
+ ieee80211_sta_join_ibss(dev, &sdata->u.sta, bss);
+ ieee80211_ibss_add_sta(dev, NULL,
+ mgmt->bssid, mgmt->sa);
+ }
}
- bss->hw_mode = rx_status->phymode;
- bss->freq = rx_status->freq;
- if (channel != rx_status->channel &&
- (bss->hw_mode == MODE_IEEE80211G ||
- bss->hw_mode == MODE_IEEE80211B) &&
- channel >= 1 && channel <= 14) {
- static const int freq_list[] = {
- 2412, 2417, 2422, 2427, 2432, 2437, 2442,
- 2447, 2452, 2457, 2462, 2467, 2472, 2484
- };
- /* IEEE 802.11g/b mode can receive packets from neighboring
- * channels, so map the channel into frequency. */
- bss->freq = freq_list[channel - 1];
- }
- bss->timestamp = timestamp;
- bss->last_update = jiffies;
- bss->rssi = rx_status->ssi;
- bss->signal = rx_status->signal;
- bss->noise = rx_status->noise;
- if (!beacon)
- bss->probe_resp++;
ieee80211_rx_bss_put(dev, bss);
}
@@ -2136,6 +2814,17 @@ static void ieee80211_rx_mgmt_beacon(struct net_device *dev,
ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems);
+ if (elems.wmm_param && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) {
+ ieee80211_sta_wmm_params(dev, ifsta, elems.wmm_param,
+ elems.wmm_param_len);
+ }
+
+ /* Do not send changes to driver if we are scanning. This removes
+ * requirement that driver's bss_info_changed function needs to be
+ * atomic. */
+ if (local->sta_sw_scanning || local->sta_hw_scanning)
+ return;
+
if (elems.erp_info && elems.erp_info_len >= 1)
changed |= ieee80211_handle_erp_ie(sdata, elems.erp_info[0]);
else {
@@ -2145,25 +2834,14 @@ static void ieee80211_rx_mgmt_beacon(struct net_device *dev,
}
if (elems.ht_cap_elem && elems.ht_info_elem &&
- elems.wmm_param && local->ops->conf_ht &&
- conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) {
+ 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);
- /* check if AP changed bss inforamation */
- if ((conf->ht_bss_conf.primary_channel !=
- bss_info.primary_channel) ||
- (conf->ht_bss_conf.bss_cap != bss_info.bss_cap) ||
- (conf->ht_bss_conf.bss_op_mode != bss_info.bss_op_mode))
- ieee80211_hw_config_ht(local, 1, &conf->ht_conf,
- &bss_info);
- }
-
- if (elems.wmm_param && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) {
- ieee80211_sta_wmm_params(dev, ifsta, elems.wmm_param,
- elems.wmm_param_len);
+ changed |= ieee80211_handle_ht(local, 1, &conf->ht_conf,
+ &bss_info);
}
ieee80211_bss_info_change_notify(sdata, changed);
@@ -2247,8 +2925,11 @@ static void ieee80211_rx_mgmt_probe_req(struct net_device *dev,
static void ieee80211_rx_mgmt_action(struct net_device *dev,
struct ieee80211_if_sta *ifsta,
struct ieee80211_mgmt *mgmt,
- size_t len)
+ size_t len,
+ struct ieee80211_rx_status *rx_status)
{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
if (len < IEEE80211_MIN_ACTION_SIZE)
return;
@@ -2261,6 +2942,12 @@ static void ieee80211_rx_mgmt_action(struct net_device *dev,
break;
ieee80211_sta_process_addba_request(dev, 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(dev, mgmt, len);
+ break;
case WLAN_ACTION_DELBA:
if (len < (IEEE80211_MIN_ACTION_SIZE +
sizeof(mgmt->u.action.u.delba)))
@@ -2274,7 +2961,18 @@ static void ieee80211_rx_mgmt_action(struct net_device *dev,
break;
}
break;
+ case PLINK_CATEGORY:
+ if (ieee80211_vif_is_mesh(&sdata->vif))
+ mesh_rx_plink_frame(dev, mgmt, len, rx_status);
+ break;
+ case MESH_PATH_SEL_CATEGORY:
+ if (ieee80211_vif_is_mesh(&sdata->vif))
+ mesh_rx_path_sel_frame(dev, mgmt, len);
+ break;
default:
+ if (net_ratelimit())
+ printk(KERN_DEBUG "%s: Rx unknown action frame - "
+ "category=%d\n", dev->name, mgmt->u.action.category);
break;
}
}
@@ -2301,13 +2999,13 @@ void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb,
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:
- case IEEE80211_STYPE_ACTION:
skb_queue_tail(&ifsta->skb_queue, skb);
queue_work(local->hw.workqueue, &ifsta->work);
return;
@@ -2366,7 +3064,7 @@ static void ieee80211_sta_rx_queued_mgmt(struct net_device *dev,
ieee80211_rx_mgmt_disassoc(dev, ifsta, mgmt, skb->len);
break;
case IEEE80211_STYPE_ACTION:
- ieee80211_rx_mgmt_action(dev, ifsta, mgmt, skb->len);
+ ieee80211_rx_mgmt_action(dev, ifsta, mgmt, skb->len, rx_status);
break;
}
@@ -2374,7 +3072,7 @@ static void ieee80211_sta_rx_queued_mgmt(struct net_device *dev,
}
-ieee80211_txrx_result
+ieee80211_rx_result
ieee80211_sta_rx_scan(struct net_device *dev, struct sk_buff *skb,
struct ieee80211_rx_status *rx_status)
{
@@ -2382,31 +3080,31 @@ ieee80211_sta_rx_scan(struct net_device *dev, struct sk_buff *skb,
u16 fc;
if (skb->len < 2)
- return TXRX_DROP;
+ return RX_DROP_UNUSABLE;
mgmt = (struct ieee80211_mgmt *) skb->data;
fc = le16_to_cpu(mgmt->frame_control);
if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL)
- return TXRX_CONTINUE;
+ return RX_CONTINUE;
if (skb->len < 24)
- return TXRX_DROP;
+ return RX_DROP_MONITOR;
if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PROBE_RESP) {
ieee80211_rx_mgmt_probe_resp(dev, mgmt,
skb->len, rx_status);
dev_kfree_skb(skb);
- return TXRX_QUEUED;
+ return RX_QUEUED;
} else if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_BEACON) {
ieee80211_rx_mgmt_beacon(dev, mgmt, skb->len,
rx_status);
dev_kfree_skb(skb);
- return TXRX_QUEUED;
+ return RX_QUEUED;
}
}
- return TXRX_CONTINUE;
+ return RX_CONTINUE;
}
@@ -2415,45 +3113,46 @@ static int ieee80211_sta_active_ibss(struct net_device *dev)
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
int active = 0;
struct sta_info *sta;
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ rcu_read_lock();
- read_lock_bh(&local->sta_lock);
- list_for_each_entry(sta, &local->sta_list, list) {
- if (sta->dev == dev &&
+ 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;
}
}
- read_unlock_bh(&local->sta_lock);
+
+ rcu_read_unlock();
return active;
}
-static void ieee80211_sta_expire(struct net_device *dev)
+static void ieee80211_sta_expire(struct net_device *dev, unsigned long exp_time)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
struct sta_info *sta, *tmp;
LIST_HEAD(tmp_list);
DECLARE_MAC_BUF(mac);
+ unsigned long flags;
- write_lock_bh(&local->sta_lock);
+ 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 +
- IEEE80211_IBSS_INACTIVITY_LIMIT)) {
+ if (time_after(jiffies, sta->last_rx + exp_time)) {
printk(KERN_DEBUG "%s: expiring inactive STA %s\n",
dev->name, print_mac(mac, sta->addr));
- __sta_info_get(sta);
- sta_info_remove(sta);
- list_add(&sta->list, &tmp_list);
+ __sta_info_unlink(&sta);
+ if (sta)
+ list_add(&sta->list, &tmp_list);
}
- write_unlock_bh(&local->sta_lock);
+ spin_unlock_irqrestore(&local->sta_lock, flags);
- list_for_each_entry_safe(sta, tmp, &tmp_list, list) {
- sta_info_free(sta);
- sta_info_put(sta);
- }
+ list_for_each_entry_safe(sta, tmp, &tmp_list, list)
+ sta_info_destroy(sta);
}
@@ -2462,7 +3161,7 @@ static void ieee80211_sta_merge_ibss(struct net_device *dev,
{
mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL);
- ieee80211_sta_expire(dev);
+ ieee80211_sta_expire(dev, IEEE80211_IBSS_INACTIVITY_LIMIT);
if (ieee80211_sta_active_ibss(dev))
return;
@@ -2472,6 +3171,36 @@ static void ieee80211_sta_merge_ibss(struct net_device *dev,
}
+#ifdef CONFIG_MAC80211_MESH
+static void ieee80211_mesh_housekeeping(struct net_device *dev,
+ struct ieee80211_if_sta *ifsta)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ bool free_plinks;
+
+ ieee80211_sta_expire(dev, IEEE80211_MESH_PEER_INACTIVITY_LIMIT);
+ mesh_path_expire(dev);
+
+ free_plinks = mesh_plink_availables(sdata);
+ if (free_plinks != sdata->u.sta.accepting_plinks)
+ ieee80211_if_config_beacon(dev);
+
+ mod_timer(&ifsta->timer, jiffies +
+ IEEE80211_MESH_HOUSEKEEPING_INTERVAL);
+}
+
+
+void ieee80211_start_mesh(struct net_device *dev)
+{
+ struct ieee80211_if_sta *ifsta;
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ ifsta = &sdata->u.sta;
+ ifsta->state = IEEE80211_MESH_UP;
+ ieee80211_sta_timer((unsigned long)sdata);
+}
+#endif
+
+
void ieee80211_sta_timer(unsigned long data)
{
struct ieee80211_sub_if_data *sdata =
@@ -2483,7 +3212,6 @@ void ieee80211_sta_timer(unsigned long data)
queue_work(local->hw.workqueue, &ifsta->work);
}
-
void ieee80211_sta_work(struct work_struct *work)
{
struct ieee80211_sub_if_data *sdata =
@@ -2500,7 +3228,8 @@ void ieee80211_sta_work(struct work_struct *work)
return;
if (sdata->vif.type != IEEE80211_IF_TYPE_STA &&
- sdata->vif.type != IEEE80211_IF_TYPE_IBSS) {
+ sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
+ sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT) {
printk(KERN_DEBUG "%s: ieee80211_sta_work: non-STA interface "
"(type=%d)\n", dev->name, sdata->vif.type);
return;
@@ -2510,6 +3239,13 @@ void ieee80211_sta_work(struct work_struct *work)
while ((skb = skb_dequeue(&ifsta->skb_queue)))
ieee80211_sta_rx_queued_mgmt(dev, skb);
+#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(dev);
+#endif
+
if (ifsta->state != IEEE80211_AUTHENTICATE &&
ifsta->state != IEEE80211_ASSOCIATE &&
test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request)) {
@@ -2545,6 +3281,11 @@ void ieee80211_sta_work(struct work_struct *work)
case IEEE80211_IBSS_JOINED:
ieee80211_sta_merge_ibss(dev, ifsta);
break;
+#ifdef CONFIG_MAC80211_MESH
+ case IEEE80211_MESH_UP:
+ ieee80211_mesh_housekeeping(dev, ifsta);
+ break;
+#endif
default:
printk(KERN_DEBUG "ieee80211_sta_work: Unknown state %d\n",
ifsta->state);
@@ -2655,7 +3396,7 @@ static int ieee80211_sta_config_auth(struct net_device *dev,
}
spin_lock_bh(&local->sta_bss_lock);
- freq = local->oper_channel->freq;
+ freq = local->oper_channel->center_freq;
list_for_each_entry(bss, &local->sta_bss_list, list) {
if (!(bss->capability & WLAN_CAPABILITY_ESS))
continue;
@@ -2686,11 +3427,12 @@ static int ieee80211_sta_config_auth(struct net_device *dev,
spin_unlock_bh(&local->sta_bss_lock);
if (selected) {
- ieee80211_set_channel(local, -1, selected->freq);
+ ieee80211_set_freq(local, selected->freq);
if (!(ifsta->flags & IEEE80211_STA_SSID_SET))
ieee80211_sta_set_ssid(dev, selected->ssid,
selected->ssid_len);
ieee80211_sta_set_bssid(dev, selected->bssid);
+ ieee80211_sta_def_wmm_params(dev, selected, 0);
ieee80211_rx_bss_put(dev, selected);
ifsta->state = IEEE80211_AUTHENTICATE;
ieee80211_sta_reset_auth(dev, ifsta);
@@ -2710,162 +3452,6 @@ static int ieee80211_sta_config_auth(struct net_device *dev,
return -1;
}
-static int ieee80211_sta_join_ibss(struct net_device *dev,
- struct ieee80211_if_sta *ifsta,
- struct ieee80211_sta_bss *bss)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- int res, rates, i, j;
- struct sk_buff *skb;
- struct ieee80211_mgmt *mgmt;
- struct ieee80211_tx_control control;
- struct ieee80211_hw_mode *mode;
- struct rate_selection ratesel;
- u8 *pos;
- struct ieee80211_sub_if_data *sdata;
-
- /* Remove possible STA entries from other IBSS networks. */
- sta_info_flush(local, NULL);
-
- if (local->ops->reset_tsf) {
- /* Reset own TSF to allow time synchronization work. */
- local->ops->reset_tsf(local_to_hw(local));
- }
- memcpy(ifsta->bssid, bss->bssid, ETH_ALEN);
- res = ieee80211_if_config(dev);
- if (res)
- return res;
-
- local->hw.conf.beacon_int = bss->beacon_int >= 10 ? bss->beacon_int : 10;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- sdata->drop_unencrypted = bss->capability &
- WLAN_CAPABILITY_PRIVACY ? 1 : 0;
-
- res = ieee80211_set_channel(local, -1, bss->freq);
-
- if (!(local->oper_channel->flag & IEEE80211_CHAN_W_IBSS)) {
- printk(KERN_DEBUG "%s: IBSS not allowed on channel %d "
- "(%d MHz)\n", dev->name, local->hw.conf.channel,
- local->hw.conf.freq);
- return -1;
- }
-
- /* Set beacon template based on scan results */
- skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400);
- do {
- if (!skb)
- break;
-
- skb_reserve(skb, local->hw.extra_tx_headroom);
-
- mgmt = (struct ieee80211_mgmt *)
- skb_put(skb, 24 + sizeof(mgmt->u.beacon));
- memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon));
- mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
- IEEE80211_STYPE_BEACON);
- memset(mgmt->da, 0xff, ETH_ALEN);
- memcpy(mgmt->sa, 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.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);
-
- pos = skb_put(skb, 2 + 1);
- *pos++ = WLAN_EID_DS_PARAMS;
- *pos++ = 1;
- *pos++ = bss->channel;
-
- 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 (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);
- }
-
- memset(&control, 0, sizeof(control));
- rate_control_get_rate(dev, local->oper_hw_mode, skb, &ratesel);
- if (!ratesel.rate) {
- printk(KERN_DEBUG "%s: Failed to determine TX rate "
- "for IBSS beacon\n", dev->name);
- break;
- }
- control.vif = &sdata->vif;
- control.tx_rate =
- (sdata->bss_conf.use_short_preamble &&
- (ratesel.rate->flags & IEEE80211_RATE_PREAMBLE2)) ?
- ratesel.rate->val2 : ratesel.rate->val;
- control.antenna_sel_tx = local->hw.conf.antenna_sel_tx;
- control.power_level = local->hw.conf.power_level;
- control.flags |= IEEE80211_TXCTL_NO_ACK;
- control.retry_limit = 1;
-
- ifsta->probe_resp = skb_copy(skb, GFP_ATOMIC);
- if (ifsta->probe_resp) {
- mgmt = (struct ieee80211_mgmt *)
- ifsta->probe_resp->data;
- mgmt->frame_control =
- IEEE80211_FC(IEEE80211_FTYPE_MGMT,
- IEEE80211_STYPE_PROBE_RESP);
- } else {
- printk(KERN_DEBUG "%s: Could not allocate ProbeResp "
- "template for IBSS\n", dev->name);
- }
-
- if (local->ops->beacon_update &&
- local->ops->beacon_update(local_to_hw(local),
- skb, &control) == 0) {
- printk(KERN_DEBUG "%s: Configured IBSS beacon "
- "template based on scan results\n", dev->name);
- skb = NULL;
- }
-
- rates = 0;
- mode = local->oper_hw_mode;
- for (i = 0; i < bss->supp_rates_len; i++) {
- int bitrate = (bss->supp_rates[i] & 0x7f) * 5;
- for (j = 0; j < mode->num_rates; j++)
- if (mode->rates[j].rate == bitrate)
- rates |= BIT(j);
- }
- ifsta->supp_rates_bits = rates;
- } while (0);
-
- if (skb) {
- printk(KERN_DEBUG "%s: Failed to configure IBSS beacon "
- "template\n", dev->name);
- dev_kfree_skb(skb);
- }
-
- ifsta->state = IEEE80211_IBSS_JOINED;
- mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL);
-
- ieee80211_rx_bss_put(dev, bss);
-
- return res;
-}
-
static int ieee80211_sta_create_ibss(struct net_device *dev,
struct ieee80211_if_sta *ifsta)
@@ -2873,7 +3459,7 @@ static int ieee80211_sta_create_ibss(struct net_device *dev,
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
struct ieee80211_sta_bss *bss;
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct ieee80211_hw_mode *mode;
+ struct ieee80211_supported_band *sband;
u8 bssid[ETH_ALEN], *pos;
int i;
DECLARE_MAC_BUF(mac);
@@ -2895,28 +3481,28 @@ static int ieee80211_sta_create_ibss(struct net_device *dev,
printk(KERN_DEBUG "%s: Creating new IBSS network, BSSID %s\n",
dev->name, print_mac(mac, bssid));
- bss = ieee80211_rx_bss_add(dev, bssid, local->hw.conf.channel,
+ bss = ieee80211_rx_bss_add(dev, bssid,
+ local->hw.conf.channel->center_freq,
sdata->u.sta.ssid, sdata->u.sta.ssid_len);
if (!bss)
return -ENOMEM;
- mode = local->oper_hw_mode;
+ bss->band = local->hw.conf.channel->band;
+ sband = local->hw.wiphy->bands[bss->band];
if (local->hw.conf.beacon_int == 0)
- local->hw.conf.beacon_int = 100;
+ local->hw.conf.beacon_int = 10000;
bss->beacon_int = local->hw.conf.beacon_int;
- bss->hw_mode = local->hw.conf.phymode;
- bss->freq = local->hw.conf.freq;
bss->last_update = jiffies;
bss->capability = WLAN_CAPABILITY_IBSS;
if (sdata->default_key) {
bss->capability |= WLAN_CAPABILITY_PRIVACY;
} else
sdata->drop_unencrypted = 0;
- bss->supp_rates_len = mode->num_rates;
+ bss->supp_rates_len = sband->n_bitrates;
pos = bss->supp_rates;
- for (i = 0; i < mode->num_rates; i++) {
- int rate = mode->rates[i].rate;
+ for (i = 0; i < sband->n_bitrates; i++) {
+ int rate = sband->bitrates[i].bitrate;
*pos++ = (u8) (rate / 5);
}
@@ -2965,7 +3551,8 @@ static int ieee80211_sta_find_ibss(struct net_device *dev,
"%s\n", print_mac(mac, bssid), print_mac(mac2, ifsta->bssid));
#endif /* CONFIG_MAC80211_IBSS_DEBUG */
if (found && memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0 &&
- (bss = ieee80211_rx_bss_get(dev, bssid, local->hw.conf.channel,
+ (bss = ieee80211_rx_bss_get(dev, bssid,
+ local->hw.conf.channel->center_freq,
ifsta->ssid, ifsta->ssid_len))) {
printk(KERN_DEBUG "%s: Selected IBSS BSSID %s"
" based on configured SSID\n",
@@ -2993,13 +3580,13 @@ static int ieee80211_sta_find_ibss(struct net_device *dev,
if (time_after(jiffies, ifsta->ibss_join_req +
IEEE80211_IBSS_JOIN_TIMEOUT)) {
if ((ifsta->flags & IEEE80211_STA_CREATE_IBSS) &&
- local->oper_channel->flag & IEEE80211_CHAN_W_IBSS)
+ (!(local->oper_channel->flags &
+ IEEE80211_CHAN_NO_IBSS)))
return ieee80211_sta_create_ibss(dev, ifsta);
if (ifsta->flags & IEEE80211_STA_CREATE_IBSS) {
- printk(KERN_DEBUG "%s: IBSS not allowed on the"
- " configured channel %d (%d MHz)\n",
- dev->name, local->hw.conf.channel,
- local->hw.conf.freq);
+ printk(KERN_DEBUG "%s: IBSS not allowed on"
+ " %d MHz\n", dev->name,
+ local->hw.conf.channel->center_freq);
}
/* No IBSS found - decrease scan interval and continue
@@ -3018,41 +3605,12 @@ static int ieee80211_sta_find_ibss(struct net_device *dev,
int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len)
{
- struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct ieee80211_if_sta *ifsta;
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
if (len > IEEE80211_MAX_SSID_LEN)
return -EINVAL;
- /* TODO: This should always be done for IBSS, even if IEEE80211_QOS is
- * not defined. */
- if (local->ops->conf_tx) {
- struct ieee80211_tx_queue_params qparam;
- int i;
-
- memset(&qparam, 0, sizeof(qparam));
- /* TODO: are these ok defaults for all hw_modes? */
- qparam.aifs = 2;
- qparam.cw_min =
- local->hw.conf.phymode == MODE_IEEE80211B ? 31 : 15;
- qparam.cw_max = 1023;
- qparam.burst_time = 0;
- for (i = IEEE80211_TX_QUEUE_DATA0; i < NUM_TX_DATA_QUEUES; i++)
- {
- local->ops->conf_tx(local_to_hw(local),
- i + IEEE80211_TX_QUEUE_DATA0,
- &qparam);
- }
- /* IBSS uses different parameters for Beacon sending */
- qparam.cw_min++;
- qparam.cw_min *= 2;
- qparam.cw_min--;
- local->ops->conf_tx(local_to_hw(local),
- IEEE80211_TX_QUEUE_BEACON, &qparam);
- }
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
ifsta = &sdata->u.sta;
if (ifsta->ssid_len != len || memcmp(ifsta->ssid, ssid, len) != 0)
@@ -3144,6 +3702,13 @@ static void ieee80211_send_nullfunc(struct ieee80211_local *local,
}
+static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata)
+{
+ if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
+ ieee80211_vif_is_mesh(&sdata->vif))
+ ieee80211_sta_timer((unsigned long)sdata);
+}
+
void ieee80211_scan_completed(struct ieee80211_hw *hw)
{
struct ieee80211_local *local = hw_to_local(hw);
@@ -3157,6 +3722,15 @@ void ieee80211_scan_completed(struct ieee80211_hw *hw)
if (local->sta_hw_scanning) {
local->sta_hw_scanning = 0;
+ if (ieee80211_hw_config(local))
+ printk(KERN_DEBUG "%s: failed to restore operational "
+ "channel after scan\n", dev->name);
+ /* Restart STA timer for HW scan case */
+ rcu_read_lock();
+ list_for_each_entry_rcu(sdata, &local->interfaces, list)
+ ieee80211_restart_sta_timer(sdata);
+ rcu_read_unlock();
+
goto done;
}
@@ -3183,11 +3757,12 @@ void ieee80211_scan_completed(struct ieee80211_hw *hw)
if (sdata->dev == local->mdev)
continue;
- if (sdata->vif.type == IEEE80211_IF_TYPE_STA) {
- if (sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED)
- ieee80211_send_nullfunc(local, sdata, 0);
- ieee80211_sta_timer((unsigned long)sdata);
- }
+ /* Tell AP we're back */
+ if (sdata->vif.type == IEEE80211_IF_TYPE_STA &&
+ sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED)
+ ieee80211_send_nullfunc(local, sdata, 0);
+
+ ieee80211_restart_sta_timer(sdata);
netif_wake_queue(sdata->dev);
}
@@ -3211,7 +3786,7 @@ void ieee80211_sta_scan_work(struct work_struct *work)
container_of(work, struct ieee80211_local, scan_work.work);
struct net_device *dev = local->scan_dev;
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct ieee80211_hw_mode *mode;
+ struct ieee80211_supported_band *sband;
struct ieee80211_channel *chan;
int skip;
unsigned long next_delay = 0;
@@ -3221,44 +3796,59 @@ void ieee80211_sta_scan_work(struct work_struct *work)
switch (local->scan_state) {
case SCAN_SET_CHANNEL:
- mode = local->scan_hw_mode;
- if (local->scan_hw_mode->list.next == &local->modes_list &&
- local->scan_channel_idx >= mode->num_channels) {
+ /*
+ * Get current scan band. scan_band may be IEEE80211_NUM_BANDS
+ * after we successfully scanned the last channel of the last
+ * band (and the last band is supported by the hw)
+ */
+ if (local->scan_band < IEEE80211_NUM_BANDS)
+ sband = local->hw.wiphy->bands[local->scan_band];
+ else
+ sband = NULL;
+
+ /*
+ * If we are at an unsupported band and have more bands
+ * left to scan, advance to the next supported one.
+ */
+ while (!sband && local->scan_band < IEEE80211_NUM_BANDS - 1) {
+ local->scan_band++;
+ sband = local->hw.wiphy->bands[local->scan_band];
+ local->scan_channel_idx = 0;
+ }
+
+ /* if no more bands/channels left, complete scan */
+ if (!sband || local->scan_channel_idx >= sband->n_channels) {
ieee80211_scan_completed(local_to_hw(local));
return;
}
- skip = !(local->enabled_modes & (1 << mode->mode));
- chan = &mode->channels[local->scan_channel_idx];
- if (!(chan->flag & IEEE80211_CHAN_W_SCAN) ||
+ skip = 0;
+ chan = &sband->channels[local->scan_channel_idx];
+
+ if (chan->flags & IEEE80211_CHAN_DISABLED ||
(sdata->vif.type == IEEE80211_IF_TYPE_IBSS &&
- !(chan->flag & IEEE80211_CHAN_W_IBSS)) ||
- (local->hw_modes & local->enabled_modes &
- (1 << MODE_IEEE80211G) && mode->mode == MODE_IEEE80211B))
+ chan->flags & IEEE80211_CHAN_NO_IBSS))
skip = 1;
if (!skip) {
-#if 0
- printk(KERN_DEBUG "%s: scan channel %d (%d MHz)\n",
- dev->name, chan->chan, chan->freq);
-#endif
-
local->scan_channel = chan;
if (ieee80211_hw_config(local)) {
- printk(KERN_DEBUG "%s: failed to set channel "
- "%d (%d MHz) for scan\n", dev->name,
- chan->chan, chan->freq);
+ printk(KERN_DEBUG "%s: failed to set freq to "
+ "%d MHz for scan\n", dev->name,
+ chan->center_freq);
skip = 1;
}
}
+ /* advance state machine to next channel/band */
local->scan_channel_idx++;
- if (local->scan_channel_idx >= local->scan_hw_mode->num_channels) {
- if (local->scan_hw_mode->list.next != &local->modes_list) {
- local->scan_hw_mode = list_entry(local->scan_hw_mode->list.next,
- struct ieee80211_hw_mode,
- list);
- local->scan_channel_idx = 0;
- }
+ if (local->scan_channel_idx >= sband->n_channels) {
+ /*
+ * scan_band may end up == IEEE80211_NUM_BANDS, but
+ * we'll catch that case above and complete the scan
+ * if that is the case.
+ */
+ local->scan_band++;
+ local->scan_channel_idx = 0;
}
if (skip)
@@ -3269,13 +3859,14 @@ void ieee80211_sta_scan_work(struct work_struct *work)
local->scan_state = SCAN_SEND_PROBE;
break;
case SCAN_SEND_PROBE:
- if (local->scan_channel->flag & IEEE80211_CHAN_W_ACTIVE_SCAN) {
- ieee80211_send_probe_req(dev, NULL, local->scan_ssid,
- local->scan_ssid_len);
- next_delay = IEEE80211_CHANNEL_TIME;
- } else
- next_delay = IEEE80211_PASSIVE_CHANNEL_TIME;
+ next_delay = IEEE80211_PASSIVE_CHANNEL_TIME;
local->scan_state = SCAN_SET_CHANNEL;
+
+ if (local->scan_channel->flags & IEEE80211_CHAN_PASSIVE_SCAN)
+ break;
+ ieee80211_send_probe_req(dev, NULL, local->scan_ssid,
+ local->scan_ssid_len);
+ next_delay = IEEE80211_CHANNEL_TIME;
break;
}
@@ -3350,10 +3941,8 @@ static int ieee80211_sta_start_scan(struct net_device *dev,
} else
local->scan_ssid_len = 0;
local->scan_state = SCAN_SET_CHANNEL;
- local->scan_hw_mode = list_entry(local->modes_list.next,
- struct ieee80211_hw_mode,
- list);
local->scan_channel_idx = 0;
+ local->scan_band = IEEE80211_BAND_2GHZ;
local->scan_dev = dev;
netif_tx_lock_bh(local->mdev);
@@ -3408,9 +3997,6 @@ ieee80211_sta_scan_result(struct net_device *dev,
bss->last_update + IEEE80211_SCAN_RESULT_EXPIRE))
return current_ev;
- if (!(local->enabled_modes & (1 << bss->hw_mode)))
- return current_ev;
-
memset(&iwe, 0, sizeof(iwe));
iwe.cmd = SIOCGIWAP;
iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
@@ -3420,15 +4006,25 @@ ieee80211_sta_scan_result(struct net_device *dev,
memset(&iwe, 0, sizeof(iwe));
iwe.cmd = SIOCGIWESSID;
- iwe.u.data.length = bss->ssid_len;
- iwe.u.data.flags = 1;
- current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
- bss->ssid);
+ if (bss_mesh_cfg(bss)) {
+ iwe.u.data.length = bss_mesh_id_len(bss);
+ iwe.u.data.flags = 1;
+ current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
+ bss_mesh_id(bss));
+ } else {
+ iwe.u.data.length = bss->ssid_len;
+ iwe.u.data.flags = 1;
+ current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
+ bss->ssid);
+ }
- if (bss->capability & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)) {
+ if (bss->capability & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)
+ || bss_mesh_cfg(bss)) {
memset(&iwe, 0, sizeof(iwe));
iwe.cmd = SIOCGIWMODE;
- if (bss->capability & WLAN_CAPABILITY_ESS)
+ if (bss_mesh_cfg(bss))
+ iwe.u.mode = IW_MODE_MESH;
+ else if (bss->capability & WLAN_CAPABILITY_ESS)
iwe.u.mode = IW_MODE_MASTER;
else
iwe.u.mode = IW_MODE_ADHOC;
@@ -3438,12 +4034,15 @@ ieee80211_sta_scan_result(struct net_device *dev,
memset(&iwe, 0, sizeof(iwe));
iwe.cmd = SIOCGIWFREQ;
- iwe.u.freq.m = bss->channel;
- iwe.u.freq.e = 0;
+ iwe.u.freq.m = bss->freq;
+ iwe.u.freq.e = 6;
current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
IW_EV_FREQ_LEN);
- iwe.u.freq.m = bss->freq * 100000;
- iwe.u.freq.e = 1;
+
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = SIOCGIWFREQ;
+ iwe.u.freq.m = ieee80211_frequency_to_channel(bss->freq);
+ iwe.u.freq.e = 0;
current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
IW_EV_FREQ_LEN);
@@ -3514,6 +4113,45 @@ ieee80211_sta_scan_result(struct net_device *dev,
}
}
+ if (bss_mesh_cfg(bss)) {
+ char *buf;
+ u8 *cfg = bss_mesh_cfg(bss);
+ buf = kmalloc(50, GFP_ATOMIC);
+ if (buf) {
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = IWEVCUSTOM;
+ sprintf(buf, "Mesh network (version %d)", cfg[0]);
+ iwe.u.data.length = strlen(buf);
+ current_ev = iwe_stream_add_point(current_ev, end_buf,
+ &iwe, buf);
+ sprintf(buf, "Path Selection Protocol ID: "
+ "0x%02X%02X%02X%02X", cfg[1], cfg[2], cfg[3],
+ cfg[4]);
+ iwe.u.data.length = strlen(buf);
+ current_ev = iwe_stream_add_point(current_ev, end_buf,
+ &iwe, buf);
+ sprintf(buf, "Path Selection Metric ID: "
+ "0x%02X%02X%02X%02X", cfg[5], cfg[6], cfg[7],
+ cfg[8]);
+ iwe.u.data.length = strlen(buf);
+ current_ev = iwe_stream_add_point(current_ev, end_buf,
+ &iwe, buf);
+ sprintf(buf, "Congestion Control Mode ID: "
+ "0x%02X%02X%02X%02X", cfg[9], cfg[10],
+ cfg[11], cfg[12]);
+ iwe.u.data.length = strlen(buf);
+ current_ev = iwe_stream_add_point(current_ev, end_buf,
+ &iwe, buf);
+ sprintf(buf, "Channel Precedence: "
+ "0x%02X%02X%02X%02X", cfg[13], cfg[14],
+ cfg[15], cfg[16]);
+ iwe.u.data.length = strlen(buf);
+ current_ev = iwe_stream_add_point(current_ev, end_buf,
+ &iwe, buf);
+ kfree(buf);
+ }
+ }
+
return current_ev;
}
@@ -3582,15 +4220,21 @@ struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev,
printk(KERN_DEBUG "%s: Adding new IBSS station %s (dev=%s)\n",
wiphy_name(local->hw.wiphy), print_mac(mac, addr), dev->name);
- sta = sta_info_add(local, dev, addr, GFP_ATOMIC);
+ sta = sta_info_alloc(sdata, addr, GFP_ATOMIC);
if (!sta)
return NULL;
- sta->supp_rates = sdata->u.sta.supp_rates_bits;
+ sta->flags |= WLAN_STA_AUTHORIZED;
+
+ sta->supp_rates[local->hw.conf.channel->band] =
+ sdata->u.sta.supp_rates_bits[local->hw.conf.channel->band];
rate_control_rate_init(sta, local);
- return sta; /* caller will call sta_info_put() */
+ if (sta_info_insert(sta))
+ return NULL;
+
+ return sta;
}
@@ -3630,3 +4274,26 @@ int ieee80211_sta_disassociate(struct net_device *dev, u16 reason)
ieee80211_set_disassoc(dev, ifsta, 0);
return 0;
}
+
+void ieee80211_notify_mac(struct ieee80211_hw *hw,
+ enum ieee80211_notification_types notif_type)
+{
+ 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) {
+ ieee80211_sta_req_auth(sdata->dev,
+ &sdata->u.sta);
+ }
+
+ }
+ rcu_read_unlock();
+ break;
+ }
+}
+EXPORT_SYMBOL(ieee80211_notify_mac);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.