commit 9818babc8fd9a542978a235f1c1786f948cbac68 Author: Tomas Winkler Date: Wed Sep 3 23:42:19 2008 +0300 mac80211: Fix low bit rate in IBSS This patch fixes regression in iwlwifi IBSS rate scaling caused by patch: commit 6bc37c06bc424bcf3f944e6a79e2d5bb537e02ed Author: Vladimir Koutny Date: Fri Jun 13 16:50:44 2008 +0200 mac80211: eliminate IBSS warning in rate_lowest_index() An IBSS station is added in prepare_for_handlers where the rate scaling was initialized only with single rate matching the received packet. The correct rate scale information should be updated only in ieee80211_rx_bss_info function where beacon is parsed. Because of coding error the rate info was left untouched. If a beacon has triggered the connection the rate remined 1Mbps. This patch fixes this coding error Signed-off-by: Tomas Winkler Cc: Vladimir Koutny Signed-off-by: John W. Linville commit 80693ceb78b08baa3b66a900d9225b2cf9c6f0ed Author: Daniel Drake Date: Sat Jul 19 23:31:17 2008 +0100 mac80211: automatic IBSS channel selection When joining an ad-hoc network, the user is currently required to specify the channel. The network will not be joined otherwise, unless it happens to be sitting on the currently active channel. This patch implements automatic channel selection when the user has not locked the interface onto a specific channel. Signed-off-by: Daniel Drake Acked-by: Johannes Berg Signed-off-by: John W. Linville commit 1e188637902eb4b62d325d3cc76b076724f3ec55 Author: Emmanuel Grumbach Date: Thu Jul 10 17:54:14 2008 +0300 mac80211: dont add a STA which is not in the same IBSS This patch avoids adding STAs that don't belong to our IBSS ieee80211_bssid_match matches also bcast address so also APs were added Signed-off-by: Emmanuel Grumbach Signed-off-by: Tomas Winkler Signed-off-by: John W. Linville commit 87291c0269e77b029282676448fed3706a54211a Author: Vladimir Koutny Date: Fri Jun 13 16:50:44 2008 +0200 mac80211: eliminate IBSS warning in rate_lowest_index() In IBSS mode prior to join/creation of new IBSS it is possible that a frame from unknown station is received and an ibss_add_sta() is called. This will cause a warning in rate_lowest_index() since the list of supported rates of our station is not initialized yet. The fix is to add ibss stations with a rate we received that frame at; this single-element set will be extended later based on beacon data. Also there is no need to store stations from a foreign IBSS. Signed-off-by: Vladimir Koutny Signed-off-by: John W. Linville --- linux-2.6.18.noarch/net/mac80211/mlme.c.orig 2008-10-20 14:22:48.000000000 -0400 +++ linux-2.6.18.noarch/net/mac80211/mlme.c 2008-10-20 14:15:16.000000000 -0400 @@ -2577,7 +2577,7 @@ static void ieee80211_rx_bss_info(struct rx_status->band); prev_rates = sta->supp_rates[rx_status->band]; - sta->supp_rates[rx_status->band] &= supp_rates; + 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 @@ -2834,7 +2834,8 @@ static void ieee80211_rx_bss_info(struct 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); + mgmt->bssid, mgmt->sa, + BIT(rx_status->rate_idx)); } } @@ -3618,11 +3619,21 @@ static int ieee80211_sta_find_ibss(struc "%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->center_freq, - ifsta->ssid, ifsta->ssid_len))) { + + if (found && memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0) { int ret; + int search_freq; + + if (ifsta->flags & IEEE80211_STA_AUTO_CHANNEL_SEL) + search_freq = bss->freq; + else + search_freq = local->hw.conf.channel->center_freq; + + bss = ieee80211_rx_bss_get(dev, bssid, search_freq, + ifsta->ssid, ifsta->ssid_len); + if (!bss) + goto dont_join; + printk(KERN_DEBUG "%s: Selected IBSS BSSID %s" " based on configured SSID\n", dev->name, print_mac(mac, bssid)); @@ -3630,6 +3641,8 @@ static int ieee80211_sta_find_ibss(struc ieee80211_rx_bss_put(dev, bss); return ret; } + +dont_join: #ifdef CONFIG_MAC80211_IBSS_DEBUG printk(KERN_DEBUG " did not try to join ibss\n"); #endif /* CONFIG_MAC80211_IBSS_DEBUG */ @@ -4269,12 +4282,13 @@ int ieee80211_sta_set_extra_ie(struct ne struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev, struct sk_buff *skb, u8 *bssid, - u8 *addr) + u8 *addr, u64 supp_rates) { struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); struct sta_info *sta; struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); DECLARE_MAC_BUF(mac); + int band = local->hw.conf.channel->band; /* TODO: Could consider removing the least recently used entry and * allow new one to be added. */ @@ -4286,6 +4300,9 @@ struct sta_info * ieee80211_ibss_add_sta return NULL; } + if (compare_ether_addr(bssid, sdata->u.sta.bssid)) + return NULL; + printk(KERN_DEBUG "%s: Adding new IBSS station %s (dev=%s)\n", wiphy_name(local->hw.wiphy), print_mac(mac, addr), dev->name); @@ -4295,8 +4312,10 @@ struct sta_info * ieee80211_ibss_add_sta sta->flags |= WLAN_STA_AUTHORIZED; - sta->supp_rates[local->hw.conf.channel->band] = - sdata->u.sta.supp_rates_bits[local->hw.conf.channel->band]; + if (supp_rates) + sta->supp_rates[band] = supp_rates; + else + sta->supp_rates[band] = sdata->u.sta.supp_rates_bits[band]; rate_control_rate_init(sta, local); --- linux-2.6.18.noarch/net/mac80211/rx.c.orig 2008-10-20 14:22:48.000000000 -0400 +++ linux-2.6.18.noarch/net/mac80211/rx.c 2008-10-20 14:15:21.000000000 -0400 @@ -1806,8 +1806,13 @@ static int prepare_for_handlers(struct i if (!bssid) return 0; if ((rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT && - (rx->fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_BEACON) + (rx->fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_BEACON) { + if (!rx->sta) + rx->sta = ieee80211_ibss_add_sta(sdata->dev, + rx->skb, bssid, hdr->addr2, + BIT(rx->status->rate_idx)); return 1; + } else if (!ieee80211_bssid_match(bssid, sdata->u.sta.bssid)) { if (!(rx->flags & IEEE80211_RX_IN_SCAN)) return 0; @@ -1820,7 +1825,8 @@ static int prepare_for_handlers(struct i rx->flags &= ~IEEE80211_RX_RA_MATCH; } else if (!rx->sta) rx->sta = ieee80211_ibss_add_sta(sdata->dev, rx->skb, - bssid, hdr->addr2); + bssid, hdr->addr2, + BIT(rx->status->rate_idx)); break; case IEEE80211_IF_TYPE_MESH_POINT: if (!multicast && --- linux-2.6.18.noarch/net/mac80211/ieee80211_i.h.orig 2008-10-20 14:22:48.000000000 -0400 +++ linux-2.6.18.noarch/net/mac80211/ieee80211_i.h 2008-10-20 14:08:03.000000000 -0400 @@ -922,7 +922,7 @@ void ieee80211_rx_bss_list_deinit(struct int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len); struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev, struct sk_buff *skb, u8 *bssid, - u8 *addr); + u8 *addr, u64 supp_rates); int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason); int ieee80211_sta_disassociate(struct net_device *dev, u16 reason); void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,