From ce838da05df6b16b9d2ac4cf4df1e86e6c9da16f Mon Sep 17 00:00:00 2001 From: "Luis R. Rodriguez" Date: Fri, 1 Oct 2010 17:05:19 -0400 Subject: [PATCH] mac80211: fix channel assumption for association done work commit e7480bbb926c5816e4fbfca70748096bbe0e4978 upstream. Be consistent and use the wk->chan instead of the local->hw.conf.channel for the association done work. This prevents any possible races against channel changes while we run this work. In the case that the race did happen we would be initializing the bit rates for the new AP under the assumption of a wrong channel and in the worst case, wrong band. This could lead to trying to assuming we could use CCK frames on 5 GHz, for example. This patch has a fix for kernels >= v2.6.34 Signed-off-by: Luis R. Rodriguez Signed-off-by: John W. Linville Signed-off-by: Greg Kroah-Hartman Signed-off-by: Andi Kleen --- net/mac80211/mlme.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index f803f8b72a93..578b2896387d 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -1210,7 +1210,7 @@ static bool ieee80211_assoc_success(struct ieee80211_work *wk, rates = 0; basic_rates = 0; - sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; + sband = local->hw.wiphy->bands[wk->chan->band]; for (i = 0; i < elems.supp_rates_len; i++) { int rate = (elems.supp_rates[i] & 0x7f) * 5; @@ -1246,11 +1246,11 @@ static bool ieee80211_assoc_success(struct ieee80211_work *wk, } } - sta->sta.supp_rates[local->hw.conf.channel->band] = rates; + sta->sta.supp_rates[wk->chan->band] = rates; sdata->vif.bss_conf.basic_rates = basic_rates; /* cf. IEEE 802.11 9.2.12 */ - if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && + if (wk->chan->band == IEEE80211_BAND_2GHZ && have_higher_than_11mbit) sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; else -- 2.39.5