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openwrt-xburst/package/mac80211/patches/550-ath9k_tsf_fix.patch
nbd 1eb6639f5e ath9k: fix rx tsf parsing
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@22493 3c298f89-4303-0410-b956-a3cf2f4a3e73
2010-08-04 17:26:56 +00:00

45 lines
1.6 KiB
Diff

ath9k_rx_skb_preprocess nulls rxs and the mactime is never set again -
mactime is always 0. This causes problems in IBSS mode.
ieee80211_rx_bss_info uses mactime to decide if an IBSS merge is needed.
Without this patch the merge is triggered by each beacon received.
This can be recognized by the "beacon TSF higher than local TSF - IBSS
merge with BSSID" log message accompanying each beacon.
This problem was not completely fixed in commit
a6d2055b02dde1067075795274672720baadd3ca and is not a stable kernel fix.
It is solely intended for wireless-testing.
Signed-off-by: Jan Friedrich <jft@dev2day.de>
---
drivers/net/wireless/ath/ath9k/recv.c | 10 +++++-----
1 files changed, 5 insertions(+), 5 deletions(-)
--- a/drivers/net/wireless/ath/ath9k/recv.c
+++ b/drivers/net/wireless/ath/ath9k/recv.c
@@ -1140,6 +1140,11 @@ int ath_rx_tasklet(struct ath_softc *sc,
if (flush)
goto requeue;
+ retval = ath9k_rx_skb_preprocess(common, hw, hdr, &rs,
+ rxs, &decrypt_error);
+ if (retval)
+ goto requeue;
+
rxs->mactime = (tsf & ~0xffffffffULL) | rs.rs_tstamp;
if (rs.rs_tstamp > tsf_lower &&
unlikely(rs.rs_tstamp - tsf_lower > 0x10000000))
@@ -1149,11 +1154,6 @@ int ath_rx_tasklet(struct ath_softc *sc,
unlikely(tsf_lower - rs.rs_tstamp > 0x10000000))
rxs->mactime += 0x100000000ULL;
- retval = ath9k_rx_skb_preprocess(common, hw, hdr, &rs,
- rxs, &decrypt_error);
- if (retval)
- goto requeue;
-
/* Ensure we always have an skb to requeue once we are done
* processing the current buffer's skb */
requeue_skb = ath_rxbuf_alloc(common, common->rx_bufsize, GFP_ATOMIC);