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Revert "mac80211/ath9k: fix duration calculation for short-guard-interval frames (thanks to Duy Nguyen for pointing this out)" again 

It appears to be causing trouble at least with some clients.

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@20115 3c298f89-4303-0410-b956-a3cf2f4a3e73
master
Felix Fietkau 2010-03-10 01:17:23 +00:00
parent ec9b5ca71b
commit 1d543fc2cc
2 changed files with 1 additions and 15 deletions
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2
package/mac80211/patches/560-minstrel_ht.patch
View File

@ -100,7 +100,7 @@
+/* Transmission time for a packet containing (syms) symbols */ +/* Transmission time for a packet containing (syms) symbols */
+#define MCS_SYMBOL_TIME(sgi, syms) \ +#define MCS_SYMBOL_TIME(sgi, syms) \
+ (sgi ? \ + (sgi ? \
+ ((syms) * 18 + 4) / 6 : /* syms * 3.6 us */ \ + ((syms) * 18 + 4) / 5 : /* syms * 3.6 us */ \
+ (syms) << 2 /* syms * 4 us */ \ + (syms) << 2 /* syms * 4 us */ \
+ ) + )
+ +

14
package/mac80211/patches/580-ath9k_fix_duration_calculation.patch
View File

@ -1,14 +0,0 @@
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -27,9 +27,9 @@
#define HT_STF 4
#define HT_LTF(_ns) (4 * (_ns))
#define SYMBOL_TIME(_ns) ((_ns) << 2) /* ns * 4 us */
-#define SYMBOL_TIME_HALFGI(_ns) (((_ns) * 18 + 4) / 5) /* ns * 3.6 us */
+#define SYMBOL_TIME_HALFGI(_ns) (((_ns) * 18 + 4) / 6) /* ns * 3.6 us */
#define NUM_SYMBOLS_PER_USEC(_usec) (_usec >> 2)
-#define NUM_SYMBOLS_PER_USEC_HALFGI(_usec) (((_usec*5)-4)/18)
+#define NUM_SYMBOLS_PER_USEC_HALFGI(_usec) (((_usec*6)-4)/18)
#define OFDM_SIFS_TIME 16