From 102e0572d330e6cdb89a8f8fbd3999e3c67a1f9e Mon Sep 17 00:00:00 2001 From: Sujith Date: Wed, 29 Oct 2008 10:15:16 +0530 Subject: [PATCH] ath9k: Ensure ath_node is not NULL when updating tx chainmask Also, random indentation and whitespace cleanup. Signed-off-by: Sujith Signed-off-by: John W. Linville --- drivers/net/wireless/ath9k/main.c | 3 +- drivers/net/wireless/ath9k/rc.c | 2 +- drivers/net/wireless/ath9k/recv.c | 6 ++-- drivers/net/wireless/ath9k/xmit.c | 57 +++++++++++++------------------ 4 files changed, 28 insertions(+), 40 deletions(-) diff --git a/drivers/net/wireless/ath9k/main.c b/drivers/net/wireless/ath9k/main.c index 839db2312ca5..0a0eb7ce0f5f 100644 --- a/drivers/net/wireless/ath9k/main.c +++ b/drivers/net/wireless/ath9k/main.c @@ -489,8 +489,7 @@ int _ath_rx_indicate(struct ath_softc *sc, return 0; } -int ath_rx_subframe(struct ath_node *an, - struct sk_buff *skb, +int ath_rx_subframe(struct ath_node *an, struct sk_buff *skb, struct ath_recv_status *status) { struct ath_softc *sc = an->an_sc; diff --git a/drivers/net/wireless/ath9k/rc.c b/drivers/net/wireless/ath9k/rc.c index 1305873b2a09..02931a111f1a 100644 --- a/drivers/net/wireless/ath9k/rc.c +++ b/drivers/net/wireless/ath9k/rc.c @@ -816,7 +816,7 @@ void ath_rate_detach(struct ath_rate_softc *asc) } u8 ath_rate_findrateix(struct ath_softc *sc, - u8 dot11rate) + u8 dot11rate) { const struct ath_rate_table *ratetable; struct ath_rate_softc *rsc = sc->sc_rc; diff --git a/drivers/net/wireless/ath9k/recv.c b/drivers/net/wireless/ath9k/recv.c index 27d6a981a106..80f26b4c4e06 100644 --- a/drivers/net/wireless/ath9k/recv.c +++ b/drivers/net/wireless/ath9k/recv.c @@ -356,8 +356,8 @@ static void ath_rx_timer(unsigned long data) /* Free all pending sub-frames in the re-ordering buffer */ -static void ath_rx_flush_tid(struct ath_softc *sc, - struct ath_arx_tid *rxtid, int drop) +static void ath_rx_flush_tid(struct ath_softc *sc, struct ath_arx_tid *rxtid, + int drop) { struct ath_rxbuf *rxbuf; unsigned long flag; @@ -1218,7 +1218,7 @@ void ath_rx_node_init(struct ath_softc *sc, struct ath_node *an) * (needs to be allocated when addba is received) */ - rxtid->rxbuf = NULL; + rxtid->rxbuf = NULL; setup_timer(&rxtid->timer, ath_rx_timer, (unsigned long)rxtid); spin_lock_init(&rxtid->tidlock); diff --git a/drivers/net/wireless/ath9k/xmit.c b/drivers/net/wireless/ath9k/xmit.c index 4e7108a179fb..bd902468868f 100644 --- a/drivers/net/wireless/ath9k/xmit.c +++ b/drivers/net/wireless/ath9k/xmit.c @@ -65,11 +65,12 @@ static u32 bits_per_symbol[][2] = { * NB: must be called with txq lock held */ -static void ath_tx_txqaddbuf(struct ath_softc *sc, - struct ath_txq *txq, struct list_head *head) +static void ath_tx_txqaddbuf(struct ath_softc *sc, struct ath_txq *txq, + struct list_head *head) { struct ath_hal *ah = sc->sc_ah; struct ath_buf *bf; + /* * Insert the frame on the outbound list and * pass it on to the hardware. @@ -360,6 +361,7 @@ static void ath_tx_complete_buf(struct ath_softc *sc, if (bf_isxretried(bf)) tx_status.flags |= ATH_TX_XRETRY; } + /* Unmap this frame */ pci_unmap_single(sc->pdev, bf->bf_dmacontext, @@ -497,8 +499,8 @@ static void ath_tx_set_retry(struct ath_softc *sc, struct ath_buf *bf) /* Update block ack window */ -static void ath_tx_update_baw(struct ath_softc *sc, - struct ath_atx_tid *tid, int seqno) +static void ath_tx_update_baw(struct ath_softc *sc, struct ath_atx_tid *tid, + int seqno) { int index, cindex; @@ -522,12 +524,8 @@ static void ath_tx_update_baw(struct ath_softc *sc, * half_gi - to use 4us v/s 3.6 us for symbol time */ -static u32 ath_pkt_duration(struct ath_softc *sc, - u8 rix, - struct ath_buf *bf, - int width, - int half_gi, - bool shortPreamble) +static u32 ath_pkt_duration(struct ath_softc *sc, u8 rix, struct ath_buf *bf, + int width, int half_gi, bool shortPreamble) { const struct ath9k_rate_table *rt = sc->sc_currates; u32 nbits, nsymbits, duration, nsymbols; @@ -541,11 +539,8 @@ static u32 ath_pkt_duration(struct ath_softc *sc, * for legacy rates, use old function to compute packet duration */ if (!IS_HT_RATE(rc)) - return ath9k_hw_computetxtime(sc->sc_ah, - rt, - pktlen, - rix, - shortPreamble); + return ath9k_hw_computetxtime(sc->sc_ah, rt, pktlen, rix, + shortPreamble); /* * find number of symbols: PLCP + data */ @@ -563,6 +558,7 @@ static u32 ath_pkt_duration(struct ath_softc *sc, */ streams = HT_RC_2_STREAMS(rc); duration += L_STF + L_LTF + L_SIG + HT_SIG + HT_STF + HT_LTF(streams); + return duration; } @@ -578,7 +574,6 @@ static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf) int i, flags, rtsctsena = 0; u32 ctsduration = 0; u8 rix = 0, cix, ctsrate = 0; - u32 aggr_limit_with_rts = ah->ah_caps.rts_aggr_limit; struct ath_node *an = NULL; struct sk_buff *skb; struct ieee80211_tx_info *tx_info; @@ -646,7 +641,7 @@ static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf) /* * For AR5416 - RTS cannot be followed by a frame larger than 8K. */ - if (bf_isaggr(bf) && (bf->bf_al > aggr_limit_with_rts)) { + if (bf_isaggr(bf) && (bf->bf_al > ah->ah_caps.rts_aggr_limit)) { /* * Ensure that in the case of SM Dynamic power save * while we are bursting the second aggregate the @@ -659,8 +654,8 @@ static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf) * CTS transmit rate is derived from the transmit rate * by looking in the h/w rate table. We must also factor * in whether or not a short preamble is to be used. + * NB: cix is set above where RTS/CTS is enabled */ - /* NB: cix is set above where RTS/CTS is enabled */ BUG_ON(cix == 0xff); ctsrate = rt->info[cix].rateCode | (bf_isshpreamble(bf) ? rt->info[cix].shortPreamble : 0); @@ -689,15 +684,13 @@ static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf) ((bf->bf_rcs[i].flags & ATH_RC_SGI_FLAG) ? ATH9K_RATESERIES_HALFGI : 0); - series[i].PktDuration = ath_pkt_duration( - sc, rix, bf, - (bf->bf_rcs[i].flags & ATH_RC_CW40_FLAG) != 0, - (bf->bf_rcs[i].flags & ATH_RC_SGI_FLAG), - bf_isshpreamble(bf)); + series[i].PktDuration = ath_pkt_duration(sc, rix, bf, + (bf->bf_rcs[i].flags & ATH_RC_CW40_FLAG) != 0, + (bf->bf_rcs[i].flags & ATH_RC_SGI_FLAG), + bf_isshpreamble(bf)); - if (bf_isht(bf)) - series[i].ChSel = - ath_chainmask_sel_logic(sc, an); + if (bf_isht(bf) && an) + series[i].ChSel = ath_chainmask_sel_logic(sc, an); else series[i].ChSel = sc->sc_tx_chainmask; @@ -748,6 +741,7 @@ static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf) ctsrate, ctsduration, series, 4, flags); + if (sc->sc_config.ath_aggr_prot && flags) ath9k_hw_set11n_burstduration(ah, ds, 8192); } @@ -1238,26 +1232,21 @@ static void ath_tx_stopdma(struct ath_softc *sc, struct ath_txq *txq) static void ath_drain_txdataq(struct ath_softc *sc, bool retry_tx) { struct ath_hal *ah = sc->sc_ah; - int i; - int npend = 0; + int i, status, npend = 0; - /* XXX return value */ if (!(sc->sc_flags & SC_OP_INVALID)) { for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) { if (ATH_TXQ_SETUP(sc, i)) { ath_tx_stopdma(sc, &sc->sc_txq[i]); - /* The TxDMA may not really be stopped. * Double check the hal tx pending count */ npend += ath9k_hw_numtxpending(ah, - sc->sc_txq[i].axq_qnum); + sc->sc_txq[i].axq_qnum); } } } if (npend) { - int status; - /* TxDMA not stopped, reset the hal */ DPRINTF(sc, ATH_DBG_XMIT, "%s: Unable to stop TxDMA. Reset HAL!\n", __func__); @@ -1360,6 +1349,7 @@ static int ath_tx_send_ampdu(struct ath_softc *sc, bf->bf_lastbf = bf->bf_lastfrm; /* one single frame */ ath_buf_set_rate(sc, bf); ath_tx_txqaddbuf(sc, txctl->txq, bf_head); + return 0; } @@ -1380,7 +1370,6 @@ static u32 ath_lookup_rate(struct ath_softc *sc, u16 aggr_limit, legacy = 0, maxampdu; int i; - skb = (struct sk_buff *)bf->bf_mpdu; tx_info = IEEE80211_SKB_CB(skb); tx_info_priv = (struct ath_tx_info_priv *) -- 2.20.1