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mac80211: fix a crash on using VHT rates 

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 43340
lede-17.01
Felix Fietkau 2014-11-21 22:29:48 +00:00
parent 6c1c3cac55
commit f80596c9df
1 changed files with 34 additions and 0 deletions
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34
package/kernel/mac80211/patches/322-mac80211-add-more-missing-checks-for-VHT-tx-rates.patch Normal file
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@ -0,0 +1,34 @@
From: Felix Fietkau <nbd@openwrt.org>
Date: Fri, 21 Nov 2014 23:27:33 +0100
Subject: [PATCH] mac80211: add more missing checks for VHT tx rates
Fixes a crash on attempting to calculate the frame duration for a VHT
packet (which needs to be handled by hw/driver instead).
Reported-by: Jouni Malinen <j@w1.fi>
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
---
--- a/net/mac80211/rate.c
+++ b/net/mac80211/rate.c
@@ -446,7 +446,8 @@ static void rate_fixup_ratelist(struct i
*
* XXX: Should this check all retry rates?
*/
- if (!(rates[0].flags & IEEE80211_TX_RC_MCS)) {
+ if (!(rates[0].flags &
+ (IEEE80211_TX_RC_MCS | IEEE80211_TX_RC_VHT_MCS))) {
u32 basic_rates = vif->bss_conf.basic_rates;
s8 baserate = basic_rates ? ffs(basic_rates) - 1 : 0;
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -60,7 +60,7 @@ static __le16 ieee80211_duration(struct
rcu_read_unlock();
/* assume HW handles this */
- if (tx->rate.flags & IEEE80211_TX_RC_MCS)
+ if (tx->rate.flags & (IEEE80211_TX_RC_MCS | IEEE80211_TX_RC_VHT_MCS))
return 0;
/* uh huh? */