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mac80211: check vif pointer before airtime calculation 

In case of monitor mode injection, vif may be NULL, don't crash
on that in ieee80211_calc_expected_tx_airtime().

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://lore.kernel.org/r/20200221104544.dddb7a3568fd.I0ede2733a3c76e95daeab07538449ea847e7b78d@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2020-02-21 10:45:45 +01:00
parent 3ee9306b35
commit ca98c47d54
1 changed files with 3 additions and 2 deletions
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5
net/mac80211/tx.c
View File

@ -5,7 +5,7 @@
* Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
* Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
* Copyright 2013-2014 Intel Mobile Communications GmbH
* Copyright (C) 2018 Intel Corporation
* Copyright (C) 2018-2020 Intel Corporation
*
* Transmit and frame generation functions.
*/
@ -3682,7 +3682,8 @@ begin:
encap_out:
IEEE80211_SKB_CB(skb)->control.vif = vif;
if (wiphy_ext_feature_isset(local->hw.wiphy, NL80211_EXT_FEATURE_AQL)) {
if (vif &&
wiphy_ext_feature_isset(local->hw.wiphy, NL80211_EXT_FEATURE_AQL)) {
u32 airtime;
airtime = ieee80211_calc_expected_tx_airtime(hw, vif, txq->sta,