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-rw-r--r--net/mac80211/mlme.c3923
1 files changed, 1017 insertions, 2906 deletions
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 902cac1bd24..87665d7bb4f 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -11,11 +11,6 @@
* published by the Free Software Foundation.
*/
-/* TODO:
- * order BSS list by RSSI(?) ("quality of AP")
- * scan result table filtering (by capability (privacy, IBSS/BSS, WPA/RSN IE,
- * SSID)
- */
#include <linux/delay.h>
#include <linux/if_ether.h>
#include <linux/skbuff.h>
@@ -26,607 +21,184 @@
#include <linux/etherdevice.h>
#include <linux/rtnetlink.h>
#include <net/iw_handler.h>
-#include <asm/types.h>
-
#include <net/mac80211.h>
+#include <asm/unaligned.h>
+
#include "ieee80211_i.h"
#include "rate.h"
#include "led.h"
-#include "mesh.h"
+#define IEEE80211_ASSOC_SCANS_MAX_TRIES 2
#define IEEE80211_AUTH_TIMEOUT (HZ / 5)
#define IEEE80211_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)
#define IEEE80211_SCAN_INTERVAL_SLOW (15 * HZ)
#define IEEE80211_IBSS_JOIN_TIMEOUT (7 * HZ)
-#define IEEE80211_PROBE_DELAY (HZ / 33)
-#define IEEE80211_CHANNEL_TIME (HZ / 33)
-#define IEEE80211_PASSIVE_CHANNEL_TIME (HZ / 5)
-#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 ERP_INFO_USE_PROTECTION BIT(1)
-
-/* mgmt header + 1 byte action code */
-#define IEEE80211_MIN_ACTION_SIZE (24 + 1)
-
-#define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
-#define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
-#define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFA0
-#define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
-#define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
-
-/* next values represent the buffer size for A-MPDU frame.
- * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2) */
-#define IEEE80211_MIN_AMPDU_BUF 0x8
-#define IEEE80211_MAX_AMPDU_BUF 0x40
-
-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 freq,
- u8 *ssid, u8 ssid_len);
-static void ieee80211_rx_bss_put(struct ieee80211_local *local,
- struct ieee80211_sta_bss *bss);
-static int ieee80211_sta_find_ibss(struct net_device *dev,
- struct ieee80211_if_sta *ifsta);
-static int ieee80211_sta_wep_configured(struct net_device *dev);
-static int ieee80211_sta_start_scan(struct net_device *dev,
- u8 *ssid, size_t ssid_len);
-static int ieee80211_sta_config_auth(struct net_device *dev,
- struct ieee80211_if_sta *ifsta);
-static void sta_rx_agg_session_timer_expired(unsigned long data);
-
-
-void ieee802_11_parse_elems(u8 *start, size_t len,
- struct ieee802_11_elems *elems)
-{
- size_t left = len;
- u8 *pos = start;
-
- memset(elems, 0, sizeof(*elems));
-
- while (left >= 2) {
- u8 id, elen;
-
- id = *pos++;
- elen = *pos++;
- left -= 2;
-
- if (elen > left)
- return;
-
- switch (id) {
- case WLAN_EID_SSID:
- elems->ssid = pos;
- elems->ssid_len = elen;
- break;
- case WLAN_EID_SUPP_RATES:
- elems->supp_rates = pos;
- elems->supp_rates_len = elen;
- break;
- case WLAN_EID_FH_PARAMS:
- elems->fh_params = pos;
- elems->fh_params_len = elen;
- break;
- case WLAN_EID_DS_PARAMS:
- elems->ds_params = pos;
- elems->ds_params_len = elen;
- break;
- case WLAN_EID_CF_PARAMS:
- elems->cf_params = pos;
- elems->cf_params_len = elen;
- break;
- case WLAN_EID_TIM:
- elems->tim = pos;
- elems->tim_len = elen;
- break;
- case WLAN_EID_IBSS_PARAMS:
- elems->ibss_params = pos;
- elems->ibss_params_len = elen;
- break;
- case WLAN_EID_CHALLENGE:
- elems->challenge = pos;
- elems->challenge_len = elen;
- break;
- case WLAN_EID_WPA:
- if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
- pos[2] == 0xf2) {
- /* Microsoft OUI (00:50:F2) */
- if (pos[3] == 1) {
- /* OUI Type 1 - WPA IE */
- elems->wpa = pos;
- elems->wpa_len = elen;
- } else if (elen >= 5 && pos[3] == 2) {
- if (pos[4] == 0) {
- elems->wmm_info = pos;
- elems->wmm_info_len = elen;
- } else if (pos[4] == 1) {
- elems->wmm_param = pos;
- elems->wmm_param_len = elen;
- }
- }
- }
- break;
- case WLAN_EID_RSN:
- elems->rsn = pos;
- elems->rsn_len = elen;
- break;
- case WLAN_EID_ERP_INFO:
- elems->erp_info = pos;
- elems->erp_info_len = elen;
- break;
- case WLAN_EID_EXT_SUPP_RATES:
- elems->ext_supp_rates = pos;
- elems->ext_supp_rates_len = elen;
- break;
- case WLAN_EID_HT_CAPABILITY:
- elems->ht_cap_elem = pos;
- elems->ht_cap_elem_len = elen;
- break;
- case WLAN_EID_HT_EXTRA_INFO:
- 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;
- case WLAN_EID_CHANNEL_SWITCH:
- elems->ch_switch_elem = pos;
- elems->ch_switch_elem_len = elen;
- break;
- case WLAN_EID_QUIET:
- if (!elems->quiet_elem) {
- elems->quiet_elem = pos;
- elems->quiet_elem_len = elen;
- }
- elems->num_of_quiet_elem++;
- break;
- case WLAN_EID_COUNTRY:
- elems->country_elem = pos;
- elems->country_elem_len = elen;
- break;
- case WLAN_EID_PWR_CONSTRAINT:
- elems->pwr_constr_elem = pos;
- elems->pwr_constr_elem_len = elen;
- break;
- default:
- break;
- }
-
- left -= elen;
- pos += elen;
- }
-}
-
-
+/* utils */
static int ecw2cw(int 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 = 0; i < local_to_hw(local)->queues; i++)
- local->ops->conf_tx(local_to_hw(local), i, &qparam);
- }
-}
-
-static void ieee80211_sta_wmm_params(struct net_device *dev,
- struct ieee80211_if_sta *ifsta,
- u8 *wmm_param, size_t wmm_param_len)
+static u8 *ieee80211_bss_get_ie(struct ieee80211_bss *bss, u8 ie)
{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_tx_queue_params params;
- size_t left;
- int count;
- u8 *pos;
-
- if (!(ifsta->flags & IEEE80211_STA_WMM_ENABLED))
- return;
+ u8 *end, *pos;
- if (!wmm_param)
- return;
-
- if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1)
- return;
- count = wmm_param[6] & 0x0f;
- if (count == ifsta->wmm_last_param_set)
- return;
- ifsta->wmm_last_param_set = count;
-
- pos = wmm_param + 8;
- left = wmm_param_len - 8;
-
- memset(&params, 0, sizeof(params));
-
- if (!local->ops->conf_tx)
- return;
-
- local->wmm_acm = 0;
- for (; left >= 4; left -= 4, pos += 4) {
- int aci = (pos[0] >> 5) & 0x03;
- int acm = (pos[0] >> 4) & 0x01;
- int queue;
+ pos = bss->ies;
+ if (pos == NULL)
+ return NULL;
+ end = pos + bss->ies_len;
- switch (aci) {
- case 1:
- queue = 3;
- if (acm)
- local->wmm_acm |= BIT(0) | BIT(3);
- break;
- case 2:
- queue = 1;
- if (acm)
- local->wmm_acm |= BIT(4) | BIT(5);
+ while (pos + 1 < end) {
+ if (pos + 2 + pos[1] > end)
break;
- case 3:
- queue = 0;
- if (acm)
- local->wmm_acm |= BIT(6) | BIT(7);
- break;
- case 0:
- default:
- queue = 2;
- if (acm)
- local->wmm_acm |= BIT(1) | BIT(2);
- break;
- }
-
- params.aifs = pos[0] & 0x0f;
- params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4);
- params.cw_min = ecw2cw(pos[1] & 0x0f);
- params.txop = get_unaligned_le16(pos + 2);
-#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
- printk(KERN_DEBUG "%s: WMM queue=%d aci=%d acm=%d aifs=%d "
- "cWmin=%d cWmax=%d txop=%d\n",
- dev->name, queue, aci, acm, params.aifs, params.cw_min,
- params.cw_max, params.txop);
-#endif
- /* TODO: handle ACM (block TX, fallback to next lowest allowed
- * AC for now) */
- if (local->ops->conf_tx(local_to_hw(local), queue, &params)) {
- printk(KERN_DEBUG "%s: failed to set TX queue "
- "parameters for queue %d\n", dev->name, queue);
- }
+ if (pos[0] == ie)
+ return pos;
+ pos += 2 + pos[1];
}
-}
-
-static u32 ieee80211_handle_protect_preamb(struct ieee80211_sub_if_data *sdata,
- bool use_protection,
- bool use_short_preamble)
-{
- struct ieee80211_bss_conf *bss_conf = &sdata->bss_conf;
-#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
- struct ieee80211_if_sta *ifsta = &sdata->u.sta;
- DECLARE_MAC_BUF(mac);
-#endif
- u32 changed = 0;
- if (use_protection != bss_conf->use_cts_prot) {
-#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
- if (net_ratelimit()) {
- printk(KERN_DEBUG "%s: CTS protection %s (BSSID="
- "%s)\n",
- sdata->dev->name,
- use_protection ? "enabled" : "disabled",
- print_mac(mac, ifsta->bssid));
- }
-#endif
- bss_conf->use_cts_prot = use_protection;
- changed |= BSS_CHANGED_ERP_CTS_PROT;
- }
-
- if (use_short_preamble != bss_conf->use_short_preamble) {
-#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
- if (net_ratelimit()) {
- printk(KERN_DEBUG "%s: switched to %s barker preamble"
- " (BSSID=%s)\n",
- sdata->dev->name,
- use_short_preamble ? "short" : "long",
- print_mac(mac, ifsta->bssid));
- }
-#endif
- bss_conf->use_short_preamble = use_short_preamble;
- changed |= BSS_CHANGED_ERP_PREAMBLE;
- }
-
- return changed;
-}
-
-static u32 ieee80211_handle_erp_ie(struct ieee80211_sub_if_data *sdata,
- u8 erp_value)
-{
- bool use_protection = (erp_value & WLAN_ERP_USE_PROTECTION) != 0;
- bool use_short_preamble = (erp_value & WLAN_ERP_BARKER_PREAMBLE) == 0;
-
- return ieee80211_handle_protect_preamb(sdata,
- use_protection, use_short_preamble);
+ return NULL;
}
-static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_sta_bss *bss)
+static int ieee80211_compatible_rates(struct ieee80211_bss *bss,
+ struct ieee80211_supported_band *sband,
+ u64 *rates)
{
- u32 changed = 0;
+ int i, j, count;
+ *rates = 0;
+ count = 0;
+ for (i = 0; i < bss->supp_rates_len; i++) {
+ int rate = (bss->supp_rates[i] & 0x7F) * 5;
- if (bss->has_erp_value)
- changed |= ieee80211_handle_erp_ie(sdata, bss->erp_value);
- else {
- u16 capab = bss->capability;
- changed |= ieee80211_handle_protect_preamb(sdata, false,
- (capab & WLAN_CAPABILITY_SHORT_PREAMBLE) != 0);
+ for (j = 0; j < sband->n_bitrates; j++)
+ if (sband->bitrates[j].bitrate == rate) {
+ *rates |= BIT(j);
+ count++;
+ break;
+ }
}
- return changed;
-}
-
-int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap *ht_cap_ie,
- struct ieee80211_ht_info *ht_info)
-{
-
- if (ht_info == NULL)
- return -EINVAL;
-
- memset(ht_info, 0, sizeof(*ht_info));
-
- if (ht_cap_ie) {
- u8 ampdu_info = ht_cap_ie->ampdu_params_info;
-
- ht_info->ht_supported = 1;
- ht_info->cap = le16_to_cpu(ht_cap_ie->cap_info);
- ht_info->ampdu_factor =
- ampdu_info & IEEE80211_HT_CAP_AMPDU_FACTOR;
- ht_info->ampdu_density =
- (ampdu_info & IEEE80211_HT_CAP_AMPDU_DENSITY) >> 2;
- memcpy(ht_info->supp_mcs_set, ht_cap_ie->supp_mcs_set, 16);
- } else
- ht_info->ht_supported = 0;
-
- return 0;
+ return count;
}
-int ieee80211_ht_addt_info_ie_to_ht_bss_info(
- struct ieee80211_ht_addt_info *ht_add_info_ie,
- struct ieee80211_ht_bss_info *bss_info)
+/* also used by mesh code */
+u64 ieee80211_sta_get_rates(struct ieee80211_local *local,
+ struct ieee802_11_elems *elems,
+ enum ieee80211_band band)
{
- if (bss_info == NULL)
- return -EINVAL;
-
- memset(bss_info, 0, sizeof(*bss_info));
-
- if (ht_add_info_ie) {
- u16 op_mode;
- op_mode = le16_to_cpu(ht_add_info_ie->operation_mode);
+ 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];
- bss_info->primary_channel = ht_add_info_ie->control_chan;
- bss_info->bss_cap = ht_add_info_ie->ht_param;
- bss_info->bss_op_mode = (u8)(op_mode & 0xff);
+ if (!sband) {
+ WARN_ON(1);
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
}
- return 0;
+ 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_sta_send_associnfo(struct net_device *dev,
- struct ieee80211_if_sta *ifsta)
+/* frame sending functions */
+
+/* also used by scanning code */
+void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
+ u8 *ssid, size_t ssid_len)
{
- char *buf;
- size_t len;
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_supported_band *sband;
+ struct sk_buff *skb;
+ struct ieee80211_mgmt *mgmt;
+ u8 *pos, *supp_rates, *esupp_rates = NULL;
int i;
- union iwreq_data wrqu;
-
- if (!ifsta->assocreq_ies && !ifsta->assocresp_ies)
- return;
- buf = kmalloc(50 + 2 * (ifsta->assocreq_ies_len +
- ifsta->assocresp_ies_len), GFP_KERNEL);
- if (!buf)
+ skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200);
+ if (!skb) {
+ printk(KERN_DEBUG "%s: failed to allocate buffer for probe "
+ "request\n", sdata->dev->name);
return;
-
- len = sprintf(buf, "ASSOCINFO(");
- if (ifsta->assocreq_ies) {
- len += sprintf(buf + len, "ReqIEs=");
- for (i = 0; i < ifsta->assocreq_ies_len; i++) {
- len += sprintf(buf + len, "%02x",
- ifsta->assocreq_ies[i]);
- }
}
- if (ifsta->assocresp_ies) {
- if (ifsta->assocreq_ies)
- len += sprintf(buf + len, " ");
- len += sprintf(buf + len, "RespIEs=");
- for (i = 0; i < ifsta->assocresp_ies_len; i++) {
- len += sprintf(buf + len, "%02x",
- ifsta->assocresp_ies[i]);
- }
- }
- len += sprintf(buf + len, ")");
+ skb_reserve(skb, local->hw.extra_tx_headroom);
- if (len > IW_CUSTOM_MAX) {
- len = sprintf(buf, "ASSOCRESPIE=");
- for (i = 0; i < ifsta->assocresp_ies_len; i++) {
- len += sprintf(buf + len, "%02x",
- ifsta->assocresp_ies[i]);
- }
+ mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
+ memset(mgmt, 0, 24);
+ mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
+ IEEE80211_STYPE_PROBE_REQ);
+ memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
+ if (dst) {
+ memcpy(mgmt->da, dst, ETH_ALEN);
+ memcpy(mgmt->bssid, dst, ETH_ALEN);
+ } else {
+ memset(mgmt->da, 0xff, ETH_ALEN);
+ memset(mgmt->bssid, 0xff, ETH_ALEN);
}
+ pos = skb_put(skb, 2 + ssid_len);
+ *pos++ = WLAN_EID_SSID;
+ *pos++ = ssid_len;
+ memcpy(pos, ssid, ssid_len);
- memset(&wrqu, 0, sizeof(wrqu));
- wrqu.data.length = len;
- wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf);
-
- kfree(buf);
-}
-
-
-static void ieee80211_set_associated(struct net_device *dev,
- struct ieee80211_if_sta *ifsta,
- bool assoc)
-{
- 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;
-
- if (assoc) {
- struct ieee80211_sta_bss *bss;
-
- ifsta->flags |= IEEE80211_STA_ASSOCIATED;
-
- if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
- return;
-
- bss = ieee80211_rx_bss_get(dev, ifsta->bssid,
- conf->channel->center_freq,
- ifsta->ssid, ifsta->ssid_len);
- if (bss) {
- /* set timing information */
- sdata->bss_conf.beacon_int = bss->beacon_int;
- sdata->bss_conf.timestamp = bss->timestamp;
- sdata->bss_conf.dtim_period = bss->dtim_period;
-
- changed |= ieee80211_handle_bss_capability(sdata, bss);
-
- ieee80211_rx_bss_put(local, bss);
- }
+ supp_rates = skb_put(skb, 2);
+ supp_rates[0] = WLAN_EID_SUPP_RATES;
+ supp_rates[1] = 0;
+ sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
- 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;
+ for (i = 0; i < sband->n_bitrates; i++) {
+ struct ieee80211_rate *rate = &sband->bitrates[i];
+ if (esupp_rates) {
+ pos = skb_put(skb, 1);
+ esupp_rates[1]++;
+ } else if (supp_rates[1] == 8) {
+ esupp_rates = skb_put(skb, 3);
+ esupp_rates[0] = WLAN_EID_EXT_SUPP_RATES;
+ esupp_rates[1] = 1;
+ pos = &esupp_rates[2];
+ } else {
+ pos = skb_put(skb, 1);
+ supp_rates[1]++;
}
-
- 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 {
- netif_carrier_off(dev);
- ieee80211_sta_tear_down_BA_sessions(dev, ifsta->bssid);
- ifsta->flags &= ~IEEE80211_STA_ASSOCIATED;
- changed |= 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);
+ *pos = rate->bitrate / 5;
}
- ifsta->last_probe = jiffies;
- ieee80211_led_assoc(local, assoc);
- sdata->bss_conf.assoc = assoc;
- ieee80211_bss_info_change_notify(sdata, changed);
-
- if (assoc)
- netif_carrier_on(dev);
-
- wrqu.ap_addr.sa_family = ARPHRD_ETHER;
- wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
+ ieee80211_tx_skb(sdata, skb, 0);
}
-static void ieee80211_set_disassoc(struct net_device *dev,
- struct ieee80211_if_sta *ifsta, int deauth)
-{
- if (deauth)
- ifsta->auth_tries = 0;
- ifsta->assoc_tries = 0;
- ieee80211_set_associated(dev, ifsta, 0);
-}
-
-void ieee80211_sta_tx(struct net_device *dev, struct sk_buff *skb,
- int encrypt)
-{
- struct ieee80211_sub_if_data *sdata;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- skb->dev = sdata->local->mdev;
- skb_set_mac_header(skb, 0);
- skb_set_network_header(skb, 0);
- skb_set_transport_header(skb, 0);
-
- skb->iif = sdata->dev->ifindex;
- skb->do_not_encrypt = !encrypt;
-
- dev_queue_xmit(skb);
-}
-
-
-static void ieee80211_send_auth(struct net_device *dev,
+static void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
struct ieee80211_if_sta *ifsta,
int transaction, u8 *extra, size_t extra_len,
int encrypt)
{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_local *local = sdata->local;
struct sk_buff *skb;
struct ieee80211_mgmt *mgmt;
@@ -634,19 +206,19 @@ static void ieee80211_send_auth(struct net_device *dev,
sizeof(*mgmt) + 6 + extra_len);
if (!skb) {
printk(KERN_DEBUG "%s: failed to allocate buffer for auth "
- "frame\n", dev->name);
+ "frame\n", sdata->dev->name);
return;
}
skb_reserve(skb, local->hw.extra_tx_headroom);
mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6);
memset(mgmt, 0, 24 + 6);
- mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
- IEEE80211_STYPE_AUTH);
+ mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
+ IEEE80211_STYPE_AUTH);
if (encrypt)
mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
- memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
+ memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
mgmt->u.auth.auth_alg = cpu_to_le16(ifsta->auth_alg);
mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
@@ -655,64 +227,19 @@ static void ieee80211_send_auth(struct net_device *dev,
if (extra)
memcpy(skb_put(skb, extra_len), extra, extra_len);
- ieee80211_sta_tx(dev, skb, encrypt);
-}
-
-
-static void ieee80211_authenticate(struct net_device *dev,
- struct ieee80211_if_sta *ifsta)
-{
- DECLARE_MAC_BUF(mac);
-
- ifsta->auth_tries++;
- if (ifsta->auth_tries > IEEE80211_AUTH_MAX_TRIES) {
- printk(KERN_DEBUG "%s: authentication with AP %s"
- " timed out\n",
- dev->name, print_mac(mac, ifsta->bssid));
- ifsta->state = IEEE80211_DISABLED;
- return;
- }
-
- ifsta->state = IEEE80211_AUTHENTICATE;
- printk(KERN_DEBUG "%s: authenticate with AP %s\n",
- dev->name, print_mac(mac, ifsta->bssid));
-
- ieee80211_send_auth(dev, ifsta, 1, NULL, 0, 0);
-
- mod_timer(&ifsta->timer, jiffies + IEEE80211_AUTH_TIMEOUT);
-}
-
-static int ieee80211_compatible_rates(struct ieee80211_sta_bss *bss,
- struct ieee80211_supported_band *sband,
- u64 *rates)
-{
- int i, j, count;
- *rates = 0;
- count = 0;
- for (i = 0; i < bss->supp_rates_len; i++) {
- int rate = (bss->supp_rates[i] & 0x7F) * 5;
-
- for (j = 0; j < sband->n_bitrates; j++)
- if (sband->bitrates[j].bitrate == rate) {
- *rates |= BIT(j);
- count++;
- break;
- }
- }
-
- return count;
+ ieee80211_tx_skb(sdata, skb, encrypt);
}
-static void ieee80211_send_assoc(struct net_device *dev,
+static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata,
struct ieee80211_if_sta *ifsta)
{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_local *local = sdata->local;
struct sk_buff *skb;
struct ieee80211_mgmt *mgmt;
- u8 *pos, *ies;
+ u8 *pos, *ies, *ht_add_ie;
int i, len, count, rates_len, supp_rates_len;
u16 capab;
- struct ieee80211_sta_bss *bss;
+ struct ieee80211_bss *bss;
int wmm = 0;
struct ieee80211_supported_band *sband;
u64 rates = 0;
@@ -722,7 +249,7 @@ static void ieee80211_send_assoc(struct net_device *dev,
ifsta->ssid_len);
if (!skb) {
printk(KERN_DEBUG "%s: failed to allocate buffer for assoc "
- "frame\n", dev->name);
+ "frame\n", sdata->dev->name);
return;
}
skb_reserve(skb, local->hw.extra_tx_headroom);
@@ -738,13 +265,13 @@ static void ieee80211_send_assoc(struct net_device *dev,
capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
}
- bss = ieee80211_rx_bss_get(dev, ifsta->bssid,
+ bss = ieee80211_rx_bss_get(local, ifsta->bssid,
local->hw.conf.channel->center_freq,
ifsta->ssid, ifsta->ssid_len);
if (bss) {
if (bss->capability & WLAN_CAPABILITY_PRIVACY)
capab |= WLAN_CAPABILITY_PRIVACY;
- if (bss->wmm_ie)
+ if (bss->wmm_used)
wmm = 1;
/* get all rates supported by the device and the AP as
@@ -766,13 +293,13 @@ static void ieee80211_send_assoc(struct net_device *dev,
mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
memset(mgmt, 0, 24);
memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
- memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
+ memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
if (ifsta->flags & IEEE80211_STA_PREV_BSSID_SET) {
skb_put(skb, 10);
- mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
- IEEE80211_STYPE_REASSOC_REQ);
+ mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
+ IEEE80211_STYPE_REASSOC_REQ);
mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab);
mgmt->u.reassoc_req.listen_interval =
cpu_to_le16(local->hw.conf.listen_interval);
@@ -780,8 +307,8 @@ static void ieee80211_send_assoc(struct net_device *dev,
ETH_ALEN);
} else {
skb_put(skb, 4);
- mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
- IEEE80211_STYPE_ASSOC_REQ);
+ mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
+ IEEE80211_STYPE_ASSOC_REQ);
mgmt->u.assoc_req.capab_info = cpu_to_le16(capab);
mgmt->u.reassoc_req.listen_interval =
cpu_to_le16(local->hw.conf.listen_interval);
@@ -866,9 +393,10 @@ static void ieee80211_send_assoc(struct net_device *dev,
/* wmm support is a must to HT */
if (wmm && (ifsta->flags & IEEE80211_STA_WMM_ENABLED) &&
- sband->ht_info.ht_supported && bss->ht_add_ie) {
+ sband->ht_info.ht_supported &&
+ (ht_add_ie = ieee80211_bss_get_ie(bss, WLAN_EID_HT_EXTRA_INFO))) {
struct ieee80211_ht_addt_info *ht_add_info =
- (struct ieee80211_ht_addt_info *)bss->ht_add_ie;
+ (struct ieee80211_ht_addt_info *)ht_add_ie;
u16 cap = sband->ht_info.cap;
__le16 tmp;
u32 flags = local->hw.conf.channel->flags;
@@ -907,21 +435,22 @@ static void ieee80211_send_assoc(struct net_device *dev,
if (ifsta->assocreq_ies)
memcpy(ifsta->assocreq_ies, ies, ifsta->assocreq_ies_len);
- ieee80211_sta_tx(dev, skb, 0);
+ ieee80211_tx_skb(sdata, skb, 0);
}
-static void ieee80211_send_deauth(struct net_device *dev,
- struct ieee80211_if_sta *ifsta, u16 reason)
+static void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
+ u16 stype, u16 reason)
{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_if_sta *ifsta = &sdata->u.sta;
struct sk_buff *skb;
struct ieee80211_mgmt *mgmt;
skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt));
if (!skb) {
- printk(KERN_DEBUG "%s: failed to allocate buffer for deauth "
- "frame\n", dev->name);
+ printk(KERN_DEBUG "%s: failed to allocate buffer for "
+ "deauth/disassoc frame\n", sdata->dev->name);
return;
}
skb_reserve(skb, local->hw.extra_tx_headroom);
@@ -929,940 +458,594 @@ static void ieee80211_send_deauth(struct net_device *dev,
mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
memset(mgmt, 0, 24);
memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
- memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
+ memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
- mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
- IEEE80211_STYPE_DEAUTH);
+ mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype);
skb_put(skb, 2);
+ /* u.deauth.reason_code == u.disassoc.reason_code */
mgmt->u.deauth.reason_code = cpu_to_le16(reason);
- ieee80211_sta_tx(dev, skb, 0);
+ ieee80211_tx_skb(sdata, skb, 0);
}
-
-static void ieee80211_send_disassoc(struct net_device *dev,
- struct ieee80211_if_sta *ifsta, u16 reason)
+/* MLME */
+static void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_bss *bss)
{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct sk_buff *skb;
- struct ieee80211_mgmt *mgmt;
+ struct ieee80211_local *local = sdata->local;
+ int i, have_higher_than_11mbit = 0;
- skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt));
- if (!skb) {
- printk(KERN_DEBUG "%s: failed to allocate buffer for disassoc "
- "frame\n", dev->name);
- return;
- }
- skb_reserve(skb, local->hw.extra_tx_headroom);
+ /* 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;
- mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
- memset(mgmt, 0, 24);
- memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
- memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
- memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
- mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
- IEEE80211_STYPE_DISASSOC);
- skb_put(skb, 2);
- mgmt->u.disassoc.reason_code = cpu_to_le16(reason);
+ 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;
- ieee80211_sta_tx(dev, skb, 0);
+ ieee80211_set_wmm_default(sdata);
}
-
-static int ieee80211_privacy_mismatch(struct net_device *dev,
- struct ieee80211_if_sta *ifsta)
+static void ieee80211_sta_wmm_params(struct ieee80211_local *local,
+ struct ieee80211_if_sta *ifsta,
+ u8 *wmm_param, size_t wmm_param_len)
{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sta_bss *bss;
- int bss_privacy;
- int wep_privacy;
- int privacy_invoked;
+ struct ieee80211_tx_queue_params params;
+ size_t left;
+ int count;
+ u8 *pos;
- if (!ifsta || (ifsta->flags & IEEE80211_STA_MIXED_CELL))
- return 0;
+ if (!(ifsta->flags & IEEE80211_STA_WMM_ENABLED))
+ return;
- bss = ieee80211_rx_bss_get(dev, ifsta->bssid,
- local->hw.conf.channel->center_freq,
- ifsta->ssid, ifsta->ssid_len);
- if (!bss)
- return 0;
+ if (!wmm_param)
+ return;
- bss_privacy = !!(bss->capability & WLAN_CAPABILITY_PRIVACY);
- wep_privacy = !!ieee80211_sta_wep_configured(dev);
- privacy_invoked = !!(ifsta->flags & IEEE80211_STA_PRIVACY_INVOKED);
+ if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1)
+ return;
+ count = wmm_param[6] & 0x0f;
+ if (count == ifsta->wmm_last_param_set)
+ return;
+ ifsta->wmm_last_param_set = count;
- ieee80211_rx_bss_put(local, bss);
+ pos = wmm_param + 8;
+ left = wmm_param_len - 8;
- if ((bss_privacy == wep_privacy) || (bss_privacy == privacy_invoked))
- return 0;
+ memset(&params, 0, sizeof(params));
- return 1;
-}
+ if (!local->ops->conf_tx)
+ return;
+ local->wmm_acm = 0;
+ for (; left >= 4; left -= 4, pos += 4) {
+ int aci = (pos[0] >> 5) & 0x03;
+ int acm = (pos[0] >> 4) & 0x01;
+ int queue;
-static void ieee80211_associate(struct net_device *dev,
- struct ieee80211_if_sta *ifsta)
+ switch (aci) {
+ case 1:
+ queue = 3;
+ if (acm)
+ local->wmm_acm |= BIT(0) | BIT(3);
+ break;
+ case 2:
+ queue = 1;
+ if (acm)
+ local->wmm_acm |= BIT(4) | BIT(5);
+ break;
+ case 3:
+ queue = 0;
+ if (acm)
+ local->wmm_acm |= BIT(6) | BIT(7);
+ break;
+ case 0:
+ default:
+ queue = 2;
+ if (acm)
+ local->wmm_acm |= BIT(1) | BIT(2);
+ break;
+ }
+
+ params.aifs = pos[0] & 0x0f;
+ params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4);
+ params.cw_min = ecw2cw(pos[1] & 0x0f);
+ params.txop = get_unaligned_le16(pos + 2);
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+ printk(KERN_DEBUG "%s: WMM queue=%d aci=%d acm=%d aifs=%d "
+ "cWmin=%d cWmax=%d txop=%d\n",
+ local->mdev->name, queue, aci, acm, params.aifs, params.cw_min,
+ params.cw_max, params.txop);
+#endif
+ /* TODO: handle ACM (block TX, fallback to next lowest allowed
+ * AC for now) */
+ if (local->ops->conf_tx(local_to_hw(local), queue, &params)) {
+ printk(KERN_DEBUG "%s: failed to set TX queue "
+ "parameters for queue %d\n", local->mdev->name, queue);
+ }
+ }
+}
+
+static u32 ieee80211_handle_protect_preamb(struct ieee80211_sub_if_data *sdata,
+ bool use_protection,
+ bool use_short_preamble)
{
+ struct ieee80211_bss_conf *bss_conf = &sdata->bss_conf;
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+ struct ieee80211_if_sta *ifsta = &sdata->u.sta;
DECLARE_MAC_BUF(mac);
+#endif
+ u32 changed = 0;
- ifsta->assoc_tries++;
- if (ifsta->assoc_tries > IEEE80211_ASSOC_MAX_TRIES) {
- printk(KERN_DEBUG "%s: association with AP %s"
- " timed out\n",
- dev->name, print_mac(mac, ifsta->bssid));
- ifsta->state = IEEE80211_DISABLED;
- return;
+ if (use_protection != bss_conf->use_cts_prot) {
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+ if (net_ratelimit()) {
+ printk(KERN_DEBUG "%s: CTS protection %s (BSSID="
+ "%s)\n",
+ sdata->dev->name,
+ use_protection ? "enabled" : "disabled",
+ print_mac(mac, ifsta->bssid));
+ }
+#endif
+ bss_conf->use_cts_prot = use_protection;
+ changed |= BSS_CHANGED_ERP_CTS_PROT;
}
- ifsta->state = IEEE80211_ASSOCIATE;
- printk(KERN_DEBUG "%s: associate with AP %s\n",
- dev->name, print_mac(mac, ifsta->bssid));
- if (ieee80211_privacy_mismatch(dev, ifsta)) {
- printk(KERN_DEBUG "%s: mismatch in privacy configuration and "
- "mixed-cell disabled - abort association\n", dev->name);
- ifsta->state = IEEE80211_DISABLED;
- return;
+ if (use_short_preamble != bss_conf->use_short_preamble) {
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+ if (net_ratelimit()) {
+ printk(KERN_DEBUG "%s: switched to %s barker preamble"