-static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
-{
- struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
- struct ieee80211_local *local = sdata->local;
- struct sk_buff *skb;
- struct ieee80211_mgmt *mgmt;
- u8 *pos, *ies, *ht_ie;
- int i, len, count, rates_len, supp_rates_len;
- u16 capab;
- struct ieee80211_bss *bss;
- int wmm = 0;
- struct ieee80211_supported_band *sband;
- u32 rates = 0;
-
- skb = dev_alloc_skb(local->hw.extra_tx_headroom +
- sizeof(*mgmt) + 200 + ifmgd->extra_ie_len +
- ifmgd->ssid_len);
- if (!skb) {
- printk(KERN_DEBUG "%s: failed to allocate buffer for assoc "
- "frame\n", sdata->dev->name);
- return;
- }
- skb_reserve(skb, local->hw.extra_tx_headroom);
-
- sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
-
- capab = ifmgd->capab;
-
- if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ) {
- if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
- capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
- if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
- capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
- }
-
- bss = ieee80211_rx_bss_get(local, ifmgd->bssid,
- local->hw.conf.channel->center_freq,
- ifmgd->ssid, ifmgd->ssid_len);
- if (bss) {
- if (bss->cbss.capability & WLAN_CAPABILITY_PRIVACY)
- capab |= WLAN_CAPABILITY_PRIVACY;
- if (bss->wmm_used)
- wmm = 1;
-
- /* get all rates supported by the device and the AP as
- * some APs don't like getting a superset of their rates
- * in the association request (e.g. D-Link DAP 1353 in
- * b-only mode) */
- rates_len = ieee80211_compatible_rates(bss, sband, &rates);
-
- if ((bss->cbss.capability & WLAN_CAPABILITY_SPECTRUM_MGMT) &&
- (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT))
- capab |= WLAN_CAPABILITY_SPECTRUM_MGMT;
-
- ieee80211_rx_bss_put(local, bss);
- } else {
- rates = ~0;
- rates_len = sband->n_bitrates;
- }
-
- mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
- memset(mgmt, 0, 24);
- memcpy(mgmt->da, ifmgd->bssid, ETH_ALEN);
- memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
- memcpy(mgmt->bssid, ifmgd->bssid, ETH_ALEN);
-
- if (ifmgd->flags & IEEE80211_STA_PREV_BSSID_SET) {
- skb_put(skb, 10);
- mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
- IEEE80211_STYPE_REASSOC_REQ);
- mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab);
- mgmt->u.reassoc_req.listen_interval =
- cpu_to_le16(local->hw.conf.listen_interval);
- memcpy(mgmt->u.reassoc_req.current_ap, ifmgd->prev_bssid,
- ETH_ALEN);
- } else {
- skb_put(skb, 4);
- mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
- IEEE80211_STYPE_ASSOC_REQ);
- mgmt->u.assoc_req.capab_info = cpu_to_le16(capab);
- mgmt->u.assoc_req.listen_interval =
- cpu_to_le16(local->hw.conf.listen_interval);
- }
-
- /* SSID */
- ies = pos = skb_put(skb, 2 + ifmgd->ssid_len);
- *pos++ = WLAN_EID_SSID;
- *pos++ = ifmgd->ssid_len;
- memcpy(pos, ifmgd->ssid, ifmgd->ssid_len);
-
- /* add all rates which were marked to be used above */
- supp_rates_len = rates_len;
- if (supp_rates_len > 8)
- supp_rates_len = 8;
-
- len = sband->n_bitrates;
- pos = skb_put(skb, supp_rates_len + 2);
- *pos++ = WLAN_EID_SUPP_RATES;
- *pos++ = supp_rates_len;
-
- count = 0;
- for (i = 0; i < sband->n_bitrates; i++) {
- if (BIT(i) & rates) {
- int rate = sband->bitrates[i].bitrate;
- *pos++ = (u8) (rate / 5);
- if (++count == 8)
- break;
- }
- }
-
- if (rates_len > count) {
- pos = skb_put(skb, rates_len - count + 2);
- *pos++ = WLAN_EID_EXT_SUPP_RATES;
- *pos++ = rates_len - count;
-
- for (i++; i < sband->n_bitrates; i++) {
- if (BIT(i) & rates) {
- int rate = sband->bitrates[i].bitrate;
- *pos++ = (u8) (rate / 5);
- }
- }
- }
-
- if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) {
- /* 1. power capabilities */
- pos = skb_put(skb, 4);
- *pos++ = WLAN_EID_PWR_CAPABILITY;
- *pos++ = 2;
- *pos++ = 0; /* min tx power */
- *pos++ = local->hw.conf.channel->max_power; /* max tx power */
-
- /* 2. supported channels */
- /* TODO: get this in reg domain format */
- pos = skb_put(skb, 2 * sband->n_channels + 2);
- *pos++ = WLAN_EID_SUPPORTED_CHANNELS;
- *pos++ = 2 * sband->n_channels;
- for (i = 0; i < sband->n_channels; i++) {
- *pos++ = ieee80211_frequency_to_channel(
- sband->channels[i].center_freq);
- *pos++ = 1; /* one channel in the subband*/
- }
- }
-
- if (ifmgd->extra_ie) {
- pos = skb_put(skb, ifmgd->extra_ie_len);
- memcpy(pos, ifmgd->extra_ie, ifmgd->extra_ie_len);
- }
-
- if (wmm && (ifmgd->flags & IEEE80211_STA_WMM_ENABLED)) {
- pos = skb_put(skb, 9);
- *pos++ = WLAN_EID_VENDOR_SPECIFIC;
- *pos++ = 7; /* len */
- *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */
- *pos++ = 0x50;
- *pos++ = 0xf2;
- *pos++ = 2; /* WME */
- *pos++ = 0; /* WME info */
- *pos++ = 1; /* WME ver */
- *pos++ = 0;
- }
-
- /* wmm support is a must to HT */
- /*
- * IEEE802.11n does not allow TKIP/WEP as pairwise
- * ciphers in HT mode. We still associate in non-ht
- * mode (11a/b/g) if any one of these ciphers is
- * configured as pairwise.
- */
- if (wmm && (ifmgd->flags & IEEE80211_STA_WMM_ENABLED) &&
- sband->ht_cap.ht_supported &&
- (ht_ie = ieee80211_bss_get_ie(bss, WLAN_EID_HT_INFORMATION)) &&
- ht_ie[1] >= sizeof(struct ieee80211_ht_info) &&
- (!(ifmgd->flags & IEEE80211_STA_TKIP_WEP_USED))) {
- struct ieee80211_ht_info *ht_info =
- (struct ieee80211_ht_info *)(ht_ie + 2);
- u16 cap = sband->ht_cap.cap;
- __le16 tmp;
- u32 flags = local->hw.conf.channel->flags;
-
- switch (ht_info->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
- case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
- if (flags & IEEE80211_CHAN_NO_FAT_ABOVE) {
- cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
- cap &= ~IEEE80211_HT_CAP_SGI_40;
- }
- break;
- case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
- if (flags & IEEE80211_CHAN_NO_FAT_BELOW) {
- cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
- cap &= ~IEEE80211_HT_CAP_SGI_40;
- }
- break;
- }
-
- tmp = cpu_to_le16(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);
- /* TODO: needs a define here for << 2 */
- *pos++ = sband->ht_cap.ampdu_factor |
- (sband->ht_cap.ampdu_density << 2);
- memcpy(pos, &sband->ht_cap.mcs, sizeof(sband->ht_cap.mcs));
- }
-
- kfree(ifmgd->assocreq_ies);
- ifmgd->assocreq_ies_len = (skb->data + skb->len) - ies;
- ifmgd->assocreq_ies = kmalloc(ifmgd->assocreq_ies_len, GFP_KERNEL);
- if (ifmgd->assocreq_ies)
- memcpy(ifmgd->assocreq_ies, ies, ifmgd->assocreq_ies_len);
-
- ieee80211_tx_skb(sdata, skb, 0);
-}
-
-