From 87291c0269e77b029282676448fed3706a54211a Mon Sep 17 00:00:00 2001 From: Vladimir Koutny Date: Fri, 13 Jun 2008 16:50:44 +0200 Subject: [PATCH] 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 --- net/mac80211/ieee80211_i.h | 2 +- net/mac80211/mlme.c | 15 +++++++++++---- net/mac80211/rx.c | 10 ++++++++-- 3 files changed, 20 insertions(+), 7 deletions(-) diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index b19bd16703b..14fccf16b80 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -876,7 +876,7 @@ void ieee80211_rx_bss_list_deinit(struct net_device *dev); 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, diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 46f20374083..55659a730dc 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -2863,7 +2863,8 @@ static void ieee80211_rx_bss_info(struct net_device *dev, 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)); } } @@ -4307,12 +4308,13 @@ 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) { 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. */ @@ -4324,6 +4326,9 @@ struct sta_info *ieee80211_ibss_add_sta(struct net_device *dev, return NULL; } + if (!ieee80211_bssid_match(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); @@ -4333,8 +4338,10 @@ struct sta_info *ieee80211_ibss_add_sta(struct net_device *dev, set_sta_flags(sta, 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); diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index e80336f8f1e..c32a0bcd53b 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -1823,8 +1823,13 @@ static int prepare_for_handlers(struct ieee80211_sub_if_data *sdata, 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; @@ -1837,7 +1842,8 @@ static int prepare_for_handlers(struct ieee80211_sub_if_data *sdata, 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 && -- 2.41.1