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mac80211: move function ieee80211_sta_join_ibss()
this moves ieee80211_sta_join_ibss() up for the next patch (ibss merge). Signed-off-by: Bruno Randolf <bruno@thinktube.com> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Bruno Randolf
John W. Linville
parent
c132bec33c
commit
a607268a0d
@ -2027,6 +2027,165 @@ void ieee80211_rx_bss_list_deinit(struct net_device *dev)
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}
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static int ieee80211_sta_join_ibss(struct net_device *dev,
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struct ieee80211_if_sta *ifsta,
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struct ieee80211_sta_bss *bss)
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{
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struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
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int res, rates, i, j;
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struct sk_buff *skb;
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struct ieee80211_mgmt *mgmt;
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struct ieee80211_tx_control control;
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struct rate_selection ratesel;
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u8 *pos;
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struct ieee80211_sub_if_data *sdata;
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struct ieee80211_supported_band *sband;
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sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
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/* Remove possible STA entries from other IBSS networks. */
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sta_info_flush(local, NULL);
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if (local->ops->reset_tsf) {
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/* Reset own TSF to allow time synchronization work. */
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local->ops->reset_tsf(local_to_hw(local));
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}
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memcpy(ifsta->bssid, bss->bssid, ETH_ALEN);
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res = ieee80211_if_config(dev);
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if (res)
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return res;
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local->hw.conf.beacon_int = bss->beacon_int >= 10 ? bss->beacon_int : 10;
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sdata = IEEE80211_DEV_TO_SUB_IF(dev);
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sdata->drop_unencrypted = bss->capability &
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WLAN_CAPABILITY_PRIVACY ? 1 : 0;
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res = ieee80211_set_freq(local, bss->freq);
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if (local->oper_channel->flags & IEEE80211_CHAN_NO_IBSS) {
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printk(KERN_DEBUG "%s: IBSS not allowed on frequency "
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"%d MHz\n", dev->name, local->oper_channel->center_freq);
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return -1;
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}
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/* Set beacon template */
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skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400);
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do {
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if (!skb)
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break;
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skb_reserve(skb, local->hw.extra_tx_headroom);
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mgmt = (struct ieee80211_mgmt *)
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skb_put(skb, 24 + sizeof(mgmt->u.beacon));
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memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon));
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mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
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IEEE80211_STYPE_BEACON);
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memset(mgmt->da, 0xff, ETH_ALEN);
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memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
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memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
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mgmt->u.beacon.beacon_int =
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cpu_to_le16(local->hw.conf.beacon_int);
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mgmt->u.beacon.capab_info = cpu_to_le16(bss->capability);
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pos = skb_put(skb, 2 + ifsta->ssid_len);
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*pos++ = WLAN_EID_SSID;
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*pos++ = ifsta->ssid_len;
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memcpy(pos, ifsta->ssid, ifsta->ssid_len);
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rates = bss->supp_rates_len;
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if (rates > 8)
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rates = 8;
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pos = skb_put(skb, 2 + rates);
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*pos++ = WLAN_EID_SUPP_RATES;
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*pos++ = rates;
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memcpy(pos, bss->supp_rates, rates);
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if (bss->band == IEEE80211_BAND_2GHZ) {
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pos = skb_put(skb, 2 + 1);
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*pos++ = WLAN_EID_DS_PARAMS;
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*pos++ = 1;
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*pos++ = ieee80211_frequency_to_channel(bss->freq);
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}
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pos = skb_put(skb, 2 + 2);
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*pos++ = WLAN_EID_IBSS_PARAMS;
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*pos++ = 2;
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/* FIX: set ATIM window based on scan results */
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*pos++ = 0;
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*pos++ = 0;
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if (bss->supp_rates_len > 8) {
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rates = bss->supp_rates_len - 8;
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pos = skb_put(skb, 2 + rates);
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*pos++ = WLAN_EID_EXT_SUPP_RATES;
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*pos++ = rates;
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memcpy(pos, &bss->supp_rates[8], rates);
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}
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memset(&control, 0, sizeof(control));
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rate_control_get_rate(dev, sband, skb, &ratesel);
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if (!ratesel.rate) {
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printk(KERN_DEBUG "%s: Failed to determine TX rate "
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"for IBSS beacon\n", dev->name);
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break;
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}
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control.vif = &sdata->vif;
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control.tx_rate = ratesel.rate;
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if (sdata->bss_conf.use_short_preamble &&
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ratesel.rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
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control.flags |= IEEE80211_TXCTL_SHORT_PREAMBLE;
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control.antenna_sel_tx = local->hw.conf.antenna_sel_tx;
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control.flags |= IEEE80211_TXCTL_NO_ACK;
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control.retry_limit = 1;
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ifsta->probe_resp = skb_copy(skb, GFP_ATOMIC);
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if (ifsta->probe_resp) {
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mgmt = (struct ieee80211_mgmt *)
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ifsta->probe_resp->data;
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mgmt->frame_control =
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IEEE80211_FC(IEEE80211_FTYPE_MGMT,
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IEEE80211_STYPE_PROBE_RESP);
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} else {
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printk(KERN_DEBUG "%s: Could not allocate ProbeResp "
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"template for IBSS\n", dev->name);
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}
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if (local->ops->beacon_update &&
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local->ops->beacon_update(local_to_hw(local),
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skb, &control) == 0) {
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printk(KERN_DEBUG "%s: Configured IBSS beacon "
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"template\n", dev->name);
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skb = NULL;
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}
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rates = 0;
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sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
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for (i = 0; i < bss->supp_rates_len; i++) {
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int bitrate = (bss->supp_rates[i] & 0x7f) * 5;
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for (j = 0; j < sband->n_bitrates; j++)
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if (sband->bitrates[j].bitrate == bitrate)
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rates |= BIT(j);
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}
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ifsta->supp_rates_bits[local->hw.conf.channel->band] = rates;
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} while (0);
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if (skb) {
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printk(KERN_DEBUG "%s: Failed to configure IBSS beacon "
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"template\n", dev->name);
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dev_kfree_skb(skb);
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}
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ifsta->state = IEEE80211_IBSS_JOINED;
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mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL);
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ieee80211_rx_bss_put(dev, bss);
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return res;
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}
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static void ieee80211_rx_bss_info(struct net_device *dev,
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struct ieee80211_mgmt *mgmt,
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size_t len,
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@ -2891,164 +3050,6 @@ static int ieee80211_sta_config_auth(struct net_device *dev,
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return -1;
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}
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static int ieee80211_sta_join_ibss(struct net_device *dev,
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struct ieee80211_if_sta *ifsta,
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struct ieee80211_sta_bss *bss)
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{
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struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
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int res, rates, i, j;
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struct sk_buff *skb;
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struct ieee80211_mgmt *mgmt;
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struct ieee80211_tx_control control;
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struct rate_selection ratesel;
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u8 *pos;
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struct ieee80211_sub_if_data *sdata;
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struct ieee80211_supported_band *sband;
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sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
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/* Remove possible STA entries from other IBSS networks. */
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sta_info_flush(local, NULL);
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if (local->ops->reset_tsf) {
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/* Reset own TSF to allow time synchronization work. */
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local->ops->reset_tsf(local_to_hw(local));
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}
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memcpy(ifsta->bssid, bss->bssid, ETH_ALEN);
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res = ieee80211_if_config(dev);
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if (res)
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return res;
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local->hw.conf.beacon_int = bss->beacon_int >= 10 ? bss->beacon_int : 10;
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sdata = IEEE80211_DEV_TO_SUB_IF(dev);
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sdata->drop_unencrypted = bss->capability &
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WLAN_CAPABILITY_PRIVACY ? 1 : 0;
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res = ieee80211_set_freq(local, bss->freq);
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if (local->oper_channel->flags & IEEE80211_CHAN_NO_IBSS) {
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printk(KERN_DEBUG "%s: IBSS not allowed on frequency "
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"%d MHz\n", dev->name, local->oper_channel->center_freq);
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return -1;
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}
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/* Set beacon template based on scan results */
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skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400);
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do {
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if (!skb)
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break;
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skb_reserve(skb, local->hw.extra_tx_headroom);
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mgmt = (struct ieee80211_mgmt *)
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skb_put(skb, 24 + sizeof(mgmt->u.beacon));
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memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon));
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mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
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IEEE80211_STYPE_BEACON);
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memset(mgmt->da, 0xff, ETH_ALEN);
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memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
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memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
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mgmt->u.beacon.beacon_int =
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cpu_to_le16(local->hw.conf.beacon_int);
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mgmt->u.beacon.capab_info = cpu_to_le16(bss->capability);
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pos = skb_put(skb, 2 + ifsta->ssid_len);
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*pos++ = WLAN_EID_SSID;
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*pos++ = ifsta->ssid_len;
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memcpy(pos, ifsta->ssid, ifsta->ssid_len);
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rates = bss->supp_rates_len;
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if (rates > 8)
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rates = 8;
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pos = skb_put(skb, 2 + rates);
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*pos++ = WLAN_EID_SUPP_RATES;
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*pos++ = rates;
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memcpy(pos, bss->supp_rates, rates);
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if (bss->band == IEEE80211_BAND_2GHZ) {
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pos = skb_put(skb, 2 + 1);
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*pos++ = WLAN_EID_DS_PARAMS;
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*pos++ = 1;
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*pos++ = ieee80211_frequency_to_channel(bss->freq);
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}
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pos = skb_put(skb, 2 + 2);
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*pos++ = WLAN_EID_IBSS_PARAMS;
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*pos++ = 2;
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/* FIX: set ATIM window based on scan results */
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*pos++ = 0;
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*pos++ = 0;
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if (bss->supp_rates_len > 8) {
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rates = bss->supp_rates_len - 8;
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pos = skb_put(skb, 2 + rates);
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*pos++ = WLAN_EID_EXT_SUPP_RATES;
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*pos++ = rates;
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memcpy(pos, &bss->supp_rates[8], rates);
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}
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memset(&control, 0, sizeof(control));
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rate_control_get_rate(dev, sband, skb, &ratesel);
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if (!ratesel.rate) {
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printk(KERN_DEBUG "%s: Failed to determine TX rate "
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"for IBSS beacon\n", dev->name);
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break;
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}
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control.vif = &sdata->vif;
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control.tx_rate = ratesel.rate;
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if (sdata->bss_conf.use_short_preamble &&
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ratesel.rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
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control.flags |= IEEE80211_TXCTL_SHORT_PREAMBLE;
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control.antenna_sel_tx = local->hw.conf.antenna_sel_tx;
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control.flags |= IEEE80211_TXCTL_NO_ACK;
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control.retry_limit = 1;
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ifsta->probe_resp = skb_copy(skb, GFP_ATOMIC);
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if (ifsta->probe_resp) {
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mgmt = (struct ieee80211_mgmt *)
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ifsta->probe_resp->data;
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mgmt->frame_control =
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IEEE80211_FC(IEEE80211_FTYPE_MGMT,
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IEEE80211_STYPE_PROBE_RESP);
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} else {
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printk(KERN_DEBUG "%s: Could not allocate ProbeResp "
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"template for IBSS\n", dev->name);
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}
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if (local->ops->beacon_update &&
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local->ops->beacon_update(local_to_hw(local),
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skb, &control) == 0) {
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printk(KERN_DEBUG "%s: Configured IBSS beacon "
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"template based on scan results\n", dev->name);
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skb = NULL;
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}
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rates = 0;
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sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
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for (i = 0; i < bss->supp_rates_len; i++) {
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int bitrate = (bss->supp_rates[i] & 0x7f) * 5;
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for (j = 0; j < sband->n_bitrates; j++)
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if (sband->bitrates[j].bitrate == bitrate)
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rates |= BIT(j);
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}
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ifsta->supp_rates_bits[local->hw.conf.channel->band] = rates;
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} while (0);
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if (skb) {
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printk(KERN_DEBUG "%s: Failed to configure IBSS beacon "
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"template\n", dev->name);
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dev_kfree_skb(skb);
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}
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ifsta->state = IEEE80211_IBSS_JOINED;
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mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL);
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ieee80211_rx_bss_put(dev, bss);
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return res;
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}
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static int ieee80211_sta_create_ibss(struct net_device *dev,
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struct ieee80211_if_sta *ifsta)
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