From 281c56dd276e587a7b4a65764ac68ae250e73235 Mon Sep 17 00:00:00 2001 From: Bruno Randolf Date: Tue, 5 Feb 2008 18:44:55 +0900 Subject: ath5k: correct padding in tx descriptors when setting up the tx descriptors for the hardware we must account for any padding between the header and the data we might have added previously. frame len is the length of the frame in the air (including FCS but no padding) and buffer len is the length of the buffer (including padding, but without FCS). changing the way ah_setup_tx_desc is called: now excluding the FCS, since it's easier to add that in the function where we need it. before this fix we sent trailing zero bytes after the packet (because frame len included the padding) which was not a big problem without WEP, but with WEP this resultes in a wrong WEP checksum and the packet is discarded - which is how i noticed at all ;) an easy way to run into header padding problems, btw, is to connect to a QoS (WME) enabled access point (eg. madwifi) - QoS data frames are 2 byte longer and will require padding. this patch applies on top of luis latest patch series from 04.02.2008. drivers/net/wireless/ath5k/base.c: Changes-licensed-under: 3-Clause-BSD drivers/net/wireless/ath5k/hw.c: Changes-licensed-under: ISC Signed-off-by: Bruno Randolf Signed-off-by: John W. Linville --- drivers/net/wireless/ath5k/base.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/net/wireless/ath5k/base.c') diff --git a/drivers/net/wireless/ath5k/base.c b/drivers/net/wireless/ath5k/base.c index ddc87149fe3..dfdaec02073 100644 --- a/drivers/net/wireless/ath5k/base.c +++ b/drivers/net/wireless/ath5k/base.c @@ -1256,7 +1256,7 @@ ath5k_txbuf_setup(struct ath5k_softc *sc, struct ath5k_buf *bf, if (ctl->flags & IEEE80211_TXCTL_NO_ACK) flags |= AR5K_TXDESC_NOACK; - pktlen = skb->len + FCS_LEN; + pktlen = skb->len; if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT)) { keyidx = ctl->key_idx; @@ -1952,7 +1952,7 @@ ath5k_beacon_setup(struct ath5k_softc *sc, struct ath5k_buf *bf, } ds->ds_data = bf->skbaddr; - ret = ah->ah_setup_tx_desc(ah, ds, skb->len + FCS_LEN, + ret = ah->ah_setup_tx_desc(ah, ds, skb->len, ieee80211_get_hdrlen_from_skb(skb), AR5K_PKT_TYPE_BEACON, (ctl->power_level * 2), ctl->tx_rate, 1, AR5K_TXKEYIX_INVALID, antenna, flags, 0, 0); -- cgit v1.2.3 From 65872e6b434ca463123f7d03b530f143aabc6333 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Fri, 15 Feb 2008 21:58:51 +0100 Subject: WDEV: ath5k, fix lock imbalance Omitted lock causes sparse warning drivers/net/wireless/ath5k/base.c:1682:1: warning: context imbalance in 'ath5k_tasklet_rx' - different lock contexts for basic block Add the lock to the guilty fail path. Signed-off-by: Jiri Slaby Acked-by: Nick Kossifidis Cc: Luis R. Rodriguez Signed-off-by: John W. Linville --- drivers/net/wireless/ath5k/base.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/net/wireless/ath5k/base.c') diff --git a/drivers/net/wireless/ath5k/base.c b/drivers/net/wireless/ath5k/base.c index dfdaec02073..062d004076a 100644 --- a/drivers/net/wireless/ath5k/base.c +++ b/drivers/net/wireless/ath5k/base.c @@ -1715,6 +1715,7 @@ ath5k_tasklet_rx(unsigned long data) break; else if (unlikely(ret)) { ATH5K_ERR(sc, "error in processing rx descriptor\n"); + spin_unlock(&sc->rxbuflock); return; } -- cgit v1.2.3 From b988763857426020e50a19434c8434a1e08e70eb Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Fri, 15 Feb 2008 21:58:52 +0100 Subject: WDEV, ath5k, don't return int from bool function sparse sees int -> bool cast as an error: hw.c:3754:10: warning: cast truncates bits from constant value (ffffffea becomes 0) Fix it by converting the rettype to int and check appropriately. Signed-off-by: Jiri Slaby Cc: Nick Kossifidis Cc: Luis R. Rodriguez Signed-off-by: John W. Linville --- drivers/net/wireless/ath5k/ath5k.h | 2 +- drivers/net/wireless/ath5k/base.c | 5 ++++- drivers/net/wireless/ath5k/hw.c | 8 ++++---- 3 files changed, 9 insertions(+), 6 deletions(-) (limited to 'drivers/net/wireless/ath5k/base.c') diff --git a/drivers/net/wireless/ath5k/ath5k.h b/drivers/net/wireless/ath5k/ath5k.h index c79066b38d3..69dea339261 100644 --- a/drivers/net/wireless/ath5k/ath5k.h +++ b/drivers/net/wireless/ath5k/ath5k.h @@ -1035,7 +1035,7 @@ struct ath5k_hw { unsigned int, unsigned int, enum ath5k_pkt_type, unsigned int, unsigned int, unsigned int, unsigned int, unsigned int, unsigned int, unsigned int, unsigned int); - bool (*ah_setup_xtx_desc)(struct ath5k_hw *, struct ath5k_desc *, + int (*ah_setup_xtx_desc)(struct ath5k_hw *, struct ath5k_desc *, unsigned int, unsigned int, unsigned int, unsigned int, unsigned int, unsigned int); int (*ah_proc_tx_desc)(struct ath5k_hw *, struct ath5k_desc *); diff --git a/drivers/net/wireless/ath5k/base.c b/drivers/net/wireless/ath5k/base.c index 062d004076a..81b45b3e0f0 100644 --- a/drivers/net/wireless/ath5k/base.c +++ b/drivers/net/wireless/ath5k/base.c @@ -668,7 +668,10 @@ ath5k_attach(struct pci_dev *pdev, struct ieee80211_hw *hw) * return false w/o doing anything. MAC's that do * support it will return true w/o doing anything. */ - if (ah->ah_setup_xtx_desc(ah, NULL, 0, 0, 0, 0, 0, 0)) + ret = ah->ah_setup_xtx_desc(ah, NULL, 0, 0, 0, 0, 0, 0); + if (ret < 0) + goto err; + if (ret > 0) __set_bit(ATH_STAT_MRRETRY, sc->status); /* diff --git a/drivers/net/wireless/ath5k/hw.c b/drivers/net/wireless/ath5k/hw.c index 1ab57aa6e4d..c2de2d958e8 100644 --- a/drivers/net/wireless/ath5k/hw.c +++ b/drivers/net/wireless/ath5k/hw.c @@ -45,7 +45,7 @@ static int ath5k_hw_setup_4word_tx_desc(struct ath5k_hw *, struct ath5k_desc *, unsigned int, unsigned int, enum ath5k_pkt_type, unsigned int, unsigned int, unsigned int, unsigned int, unsigned int, unsigned int, unsigned int, unsigned int); -static bool ath5k_hw_setup_xr_tx_desc(struct ath5k_hw *, struct ath5k_desc *, +static int ath5k_hw_setup_xr_tx_desc(struct ath5k_hw *, struct ath5k_desc *, unsigned int, unsigned int, unsigned int, unsigned int, unsigned int, unsigned int); static int ath5k_hw_proc_4word_tx_status(struct ath5k_hw *, struct ath5k_desc *); @@ -3743,7 +3743,7 @@ static int ath5k_hw_setup_4word_tx_desc(struct ath5k_hw *ah, /* * Initialize a 4-word multirate tx descriptor on 5212 */ -static bool +static int ath5k_hw_setup_xr_tx_desc(struct ath5k_hw *ah, struct ath5k_desc *desc, unsigned int tx_rate1, u_int tx_tries1, u_int tx_rate2, u_int tx_tries2, unsigned int tx_rate3, u_int tx_tries3) @@ -3783,10 +3783,10 @@ ath5k_hw_setup_xr_tx_desc(struct ath5k_hw *ah, struct ath5k_desc *desc, #undef _XTX_TRIES - return true; + return 1; } - return false; + return 0; } /* -- cgit v1.2.3 From 04f93a87a2db84e7214a4ec56fccd2289e973ce5 Mon Sep 17 00:00:00 2001 From: David Miller Date: Fri, 15 Feb 2008 16:08:59 -0800 Subject: ath5k: Fix build warnings on some 64-bit platforms. 'u64' is not necessarily 'unsigned long long' drivers/net/wireless/ath5k/base.c: In function 'ath5k_beacon_update_timers': drivers/net/wireless/ath5k/base.c:2130: warning: format '%llx' expects type 'long long unsigned int', but argument 4 has type 'u64' drivers/net/wireless/ath5k/base.c:2130: warning: format '%llx' expects type 'long long unsigned int', but argument 5 has type 'u64' drivers/net/wireless/ath5k/base.c: In function 'ath5k_intr': drivers/net/wireless/ath5k/base.c:2391: warning: format '%llx' expects type 'long long unsigned int', but argument 6 has type 'u64' Signed-off-by: David S. Miller Signed-off-by: John W. Linville --- drivers/net/wireless/ath5k/base.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) (limited to 'drivers/net/wireless/ath5k/base.c') diff --git a/drivers/net/wireless/ath5k/base.c b/drivers/net/wireless/ath5k/base.c index 81b45b3e0f0..bef967ce34a 100644 --- a/drivers/net/wireless/ath5k/base.c +++ b/drivers/net/wireless/ath5k/base.c @@ -2130,8 +2130,9 @@ ath5k_beacon_update_timers(struct ath5k_softc *sc, u64 bc_tsf) "updated timers based on beacon TSF\n"); ATH5K_DBG_UNLIMIT(sc, ATH5K_DEBUG_BEACON, - "bc_tsf %llx hw_tsf %llx bc_tu %u hw_tu %u nexttbtt %u\n", - bc_tsf, hw_tsf, bc_tu, hw_tu, nexttbtt); + "bc_tsf %llx hw_tsf %llx bc_tu %u hw_tu %u nexttbtt %u\n", + (unsigned long long) bc_tsf, + (unsigned long long) hw_tsf, bc_tu, hw_tu, nexttbtt); ATH5K_DBG_UNLIMIT(sc, ATH5K_DEBUG_BEACON, "intval %u %s %s\n", intval & AR5K_BEACON_PERIOD, intval & AR5K_BEACON_ENA ? "AR5K_BEACON_ENA" : "", @@ -2389,10 +2390,11 @@ ath5k_intr(int irq, void *dev_id) u64 tsf = ath5k_hw_get_tsf64(ah); sc->nexttbtt += sc->bintval; ATH5K_DBG(sc, ATH5K_DEBUG_BEACON, - "SWBA nexttbtt: %x hw_tu: %x " - "TSF: %llx\n", - sc->nexttbtt, - TSF_TO_TU(tsf), tsf); + "SWBA nexttbtt: %x hw_tu: %x " + "TSF: %llx\n", + sc->nexttbtt, + TSF_TO_TU(tsf), + (unsigned long long) tsf); } else { ath5k_beacon_send(sc); } -- cgit v1.2.3