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mac80211: update the channel context after channel switch 

When the channel switch has been made, a vif is now using
the channel context which was reserved. When that happens,
we need to update the channel context since its parameters
may change.

I hit a case in which I switched to a 40Mhz channel but the
reserved channel context was still on 20Mhz. The rate control
would try to send 40Mhz packets on a 20Mhz channel context and
that made iwlwifi's firmware unhappy.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Emmanuel Grumbach 2014-11-30 17:17:26 +02:00 committed by Johannes Berg
parent f89f46cf3a
commit 722ddb0dab
1 changed files with 4 additions and 0 deletions
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4
net/mac80211/chan.c
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@ -1011,6 +1011,10 @@ ieee80211_vif_use_reserved_reassign(struct ieee80211_sub_if_data *sdata)
ieee80211_vif_update_chandef(sdata, &sdata->reserved_chandef);
ieee80211_recalc_smps_chanctx(local, new_ctx);
ieee80211_recalc_radar_chanctx(local, new_ctx);
ieee80211_recalc_chanctx_min_def(local, new_ctx);
if (changed)
ieee80211_bss_info_change_notify(sdata, changed);