Commit 722ddb0d authored Nov 30, 2014 by Emmanuel Grumbach Committed by Johannes Berg Dec 12, 2014

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>

parent f89f46cf

net/mac80211/chan.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -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);

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