35 lines
		
	
	
		
			1.1 KiB
		
	
	
	
		
			Diff
		
	
	
	
	
	
			
		
		
	
	
			35 lines
		
	
	
		
			1.1 KiB
		
	
	
	
		
			Diff
		
	
	
	
	
	
| From: Felix Fietkau <nbd@openwrt.org>
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| Date: Fri, 21 Nov 2014 23:27:33 +0100
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| Subject: [PATCH] mac80211: add more missing checks for VHT tx rates
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| 
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| Fixes a crash on attempting to calculate the frame duration for a VHT
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| packet (which needs to be handled by hw/driver instead).
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| 
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| Reported-by: Jouni Malinen <j@w1.fi>
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| Signed-off-by: Felix Fietkau <nbd@openwrt.org>
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| ---
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| 
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| --- a/net/mac80211/rate.c
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| +++ b/net/mac80211/rate.c
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| @@ -446,7 +446,8 @@ static void rate_fixup_ratelist(struct i
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|  	 *
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|  	 * XXX: Should this check all retry rates?
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|  	 */
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| -	if (!(rates[0].flags & IEEE80211_TX_RC_MCS)) {
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| +	if (!(rates[0].flags &
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| +	      (IEEE80211_TX_RC_MCS | IEEE80211_TX_RC_VHT_MCS))) {
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|  		u32 basic_rates = vif->bss_conf.basic_rates;
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|  		s8 baserate = basic_rates ? ffs(basic_rates) - 1 : 0;
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|  
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| --- a/net/mac80211/tx.c
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| +++ b/net/mac80211/tx.c
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| @@ -60,7 +60,7 @@ static __le16 ieee80211_duration(struct 
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|  	rcu_read_unlock();
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|  
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|  	/* assume HW handles this */
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| -	if (tx->rate.flags & IEEE80211_TX_RC_MCS)
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| +	if (tx->rate.flags & (IEEE80211_TX_RC_MCS | IEEE80211_TX_RC_VHT_MCS))
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|  		return 0;
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|  
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|  	/* uh huh? */
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