From: Sujith <Sujith.Manoharan@atheros.com>
To: <linville@tuxdriver.com>
Cc: <linux-wireless@vger.kernel.org>, <Jouni.Malinen@Atheros.com>,
<Luis.Rodriguez@Atheros.com>
Subject: [PATCH 2/3] ath9k: Fix nexttbtt calculation
Date: Wed, 17 Sep 2008 10:15:36 +0530 [thread overview]
Message-ID: <18640.35696.421614.964818@gargle.gargle.HOWL> (raw)
nexttbtt has to be obtained from the timestamp of the beacon
obtained from mac80211. Fix this.
And <asm/unaligned.h> is not needed anymore.
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
---
drivers/net/wireless/ath9k/beacon.c | 9 ++++++---
drivers/net/wireless/ath9k/core.h | 1 +
2 files changed, 7 insertions(+), 3 deletions(-)
diff --git a/drivers/net/wireless/ath9k/beacon.c b/drivers/net/wireless/ath9k/beacon.c
index f8d952c..eedb465 100644
--- a/drivers/net/wireless/ath9k/beacon.c
+++ b/drivers/net/wireless/ath9k/beacon.c
@@ -16,7 +16,6 @@
/* Implementation of beacon processing. */
-#include <asm/unaligned.h>
#include "core.h"
/*
@@ -305,6 +304,7 @@ int ath_beacon_alloc(struct ath_softc *sc, int if_id)
struct ieee80211_hdr *hdr;
struct ath_buf *bf;
struct sk_buff *skb;
+ __le64 tstamp;
avp = sc->sc_vaps[if_id];
ASSERT(avp);
@@ -370,6 +370,9 @@ int ath_beacon_alloc(struct ath_softc *sc, int if_id)
return -ENOMEM;
}
+ tstamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
+ sc->bc_tstamp = le64_to_cpu(tstamp);
+
/*
* Calculate a TSF adjustment factor required for
* staggered beacons. Note that we assume the format
@@ -669,8 +672,8 @@ void ath_beacon_config(struct ath_softc *sc, int if_id)
conf.bmiss_timeout = ATH_DEFAULT_BMISS_LIMIT * conf.beacon_interval;
/* extract tstamp from last beacon and convert to TU */
- nexttbtt = TSF_TO_TU(get_unaligned_le32(conf.u.last_tstamp + 4),
- get_unaligned_le32(conf.u.last_tstamp));
+ nexttbtt = TSF_TO_TU(sc->bc_tstamp >> 32, sc->bc_tstamp);
+
/* XXX conditionalize multi-bss support? */
if (sc->sc_ah->ah_opmode == ATH9K_M_HOSTAP) {
/*
diff --git a/drivers/net/wireless/ath9k/core.h b/drivers/net/wireless/ath9k/core.h
index b66de29..6ff3bef 100644
--- a/drivers/net/wireless/ath9k/core.h
+++ b/drivers/net/wireless/ath9k/core.h
@@ -1001,6 +1001,7 @@ struct ath_softc {
u32 sc_bhalq;
u32 sc_bmisscount;
u32 ast_be_xmit; /* beacons transmitted */
+ u64 bc_tstamp;
/* Rate */
struct ieee80211_rate rates[IEEE80211_NUM_BANDS][ATH_RATE_MAX];
--
1.6.0.2
reply other threads:[~2008-09-17 4:47 UTC|newest]
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