Return-path: Received: from mail.atheros.com ([12.36.123.2]:39604 "EHLO mail.atheros.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750817AbYIQErN (ORCPT ); Wed, 17 Sep 2008 00:47:13 -0400 From: Sujith MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Message-ID: <18640.35669.341533.891954@gargle.gargle.HOWL> (sfid-20080917_064717_091229_8960DF44) Date: Wed, 17 Sep 2008 10:15:09 +0530 To: CC: , , Subject: [PATCH 1/3] ath9k: Whitespace cleanup Sender: linux-wireless-owner@vger.kernel.org List-ID: Also, remove comments that are not relevant anymore. Signed-off-by: Sujith --- drivers/net/wireless/ath9k/beacon.c | 136 +++++++++++++++------------------- 1 files changed, 60 insertions(+), 76 deletions(-) diff --git a/drivers/net/wireless/ath9k/beacon.c b/drivers/net/wireless/ath9k/beacon.c index c43fd58..f8d952c 100644 --- a/drivers/net/wireless/ath9k/beacon.c +++ b/drivers/net/wireless/ath9k/beacon.c @@ -26,7 +26,6 @@ * the operating mode of the station (AP or AdHoc). Parameters are AIFS * settings and channel width min/max */ - static int ath_beaconq_config(struct ath_softc *sc) { struct ath_hal *ah = sc->sc_ah; @@ -63,19 +62,18 @@ static int ath_beaconq_config(struct ath_softc *sc) * up all required antenna switch parameters, rate codes, and channel flags. * Beacons are always sent out at the lowest rate, and are not retried. */ - static void ath_beacon_setup(struct ath_softc *sc, - struct ath_vap *avp, struct ath_buf *bf) + struct ath_vap *avp, struct ath_buf *bf) { struct sk_buff *skb = (struct sk_buff *)bf->bf_mpdu; struct ath_hal *ah = sc->sc_ah; struct ath_desc *ds; - int flags, antenna; + struct ath9k_11n_rate_series series[4]; const struct ath9k_rate_table *rt; + int flags, antenna; u8 rix, rate; int ctsrate = 0; int ctsduration = 0; - struct ath9k_11n_rate_series series[4]; DPRINTF(sc, ATH_DBG_BEACON, "%s: m %p len %u\n", __func__, skb, skb->len); @@ -115,20 +113,21 @@ static void ath_beacon_setup(struct ath_softc *sc, rate |= rt->info[rix].shortPreamble; ath9k_hw_set11n_txdesc(ah, ds, - skb->len + FCS_LEN, /* frame length */ - ATH9K_PKT_TYPE_BEACON, /* Atheros packet type */ + skb->len + FCS_LEN, /* frame length */ + ATH9K_PKT_TYPE_BEACON, /* Atheros packet type */ avp->av_btxctl.txpower, /* txpower XXX */ - ATH9K_TXKEYIX_INVALID, /* no encryption */ - ATH9K_KEY_TYPE_CLEAR, /* no encryption */ - flags /* no ack, veol for beacons */ + ATH9K_TXKEYIX_INVALID, /* no encryption */ + ATH9K_KEY_TYPE_CLEAR, /* no encryption */ + flags /* no ack, + veol for beacons */ ); /* NB: beacon's BufLen must be a multiple of 4 bytes */ ath9k_hw_filltxdesc(ah, ds, roundup(skb->len, 4), /* buffer length */ - true, /* first segment */ - true, /* last segment */ - ds /* first descriptor */ + true, /* first segment */ + true, /* last segment */ + ds /* first descriptor */ ); memzero(series, sizeof(struct ath9k_11n_rate_series) * 4); @@ -153,22 +152,23 @@ static struct ath_buf *ath_beacon_generate(struct ath_softc *sc, int if_id) struct ath_buf *bf; struct ath_vap *avp; struct sk_buff *skb; - int cabq_depth; struct ath_txq *cabq; struct ieee80211_tx_info *info; + int cabq_depth; + avp = sc->sc_vaps[if_id]; + ASSERT(avp); cabq = sc->sc_cabq; - ASSERT(avp); - if (avp->av_bcbuf == NULL) { DPRINTF(sc, ATH_DBG_BEACON, "%s: avp=%p av_bcbuf=%p\n", __func__, avp, avp->av_bcbuf); return NULL; } + bf = avp->av_bcbuf; - skb = (struct sk_buff *) bf->bf_mpdu; + skb = (struct sk_buff *)bf->bf_mpdu; if (skb) { pci_unmap_single(sc->pdev, bf->bf_dmacontext, skb_end_pointer(skb) - skb->head, @@ -179,17 +179,19 @@ static struct ath_buf *ath_beacon_generate(struct ath_softc *sc, int if_id) bf->bf_mpdu = skb; if (skb == NULL) return NULL; + info = IEEE80211_SKB_CB(skb); if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) { /* * TODO: make sure the seq# gets assigned properly (vs. other * TX frames) */ - struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; sc->seq_no += 0x10; hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG); hdr->seq_ctrl |= cpu_to_le16(sc->seq_no); } + bf->bf_buf_addr = bf->bf_dmacontext = pci_map_single(sc->pdev, skb->data, skb_end_pointer(skb) - skb->head, @@ -241,7 +243,6 @@ static struct ath_buf *ath_beacon_generate(struct ath_softc *sc, int if_id) * Startup beacon transmission for adhoc mode when they are sent entirely * by the hardware using the self-linked descriptor + veol trick. */ - static void ath_beacon_start_adhoc(struct ath_softc *sc, int if_id) { struct ath_hal *ah = sc->sc_ah; @@ -278,7 +279,6 @@ static void ath_beacon_start_adhoc(struct ath_softc *sc, int if_id) * min/max, and enable aifs). The info structure does not need to be * persistant. */ - int ath_beaconq_setup(struct ath_hal *ah) { struct ath9k_tx_queue_info qi; @@ -299,11 +299,10 @@ int ath_beaconq_setup(struct ath_hal *ah) * the ATH interface. This routine also calculates the beacon "slot" for * staggared beacons in the mBSSID case. */ - int ath_beacon_alloc(struct ath_softc *sc, int if_id) { struct ath_vap *avp; - struct ieee80211_hdr *wh; + struct ieee80211_hdr *hdr; struct ath_buf *bf; struct sk_buff *skb; @@ -312,13 +311,11 @@ int ath_beacon_alloc(struct ath_softc *sc, int if_id) /* Allocate a beacon descriptor if we haven't done so. */ if (!avp->av_bcbuf) { - /* - * Allocate beacon state for hostap/ibss. We know - * a buffer is available. - */ + /* Allocate beacon state for hostap/ibss. We know + * a buffer is available. */ avp->av_bcbuf = list_first_entry(&sc->sc_bbuf, - struct ath_buf, list); + struct ath_buf, list); list_del(&avp->av_bcbuf->list); if (sc->sc_ah->ah_opmode == ATH9K_M_HOSTAP || @@ -362,9 +359,7 @@ int ath_beacon_alloc(struct ath_softc *sc, int if_id) } /* - * NB: the beacon data buffer must be 32-bit aligned; - * we assume the wbuf routines will return us something - * with this alignment (perhaps should assert). + * NB: the beacon data buffer must be 32-bit aligned. * FIXME: Fill avp->av_btxctl.txpower and * avp->av_btxctl.shortPreamble */ @@ -408,8 +403,8 @@ int ath_beacon_alloc(struct ath_softc *sc, int if_id) __func__, "stagger", avp->av_bslot, intval, (unsigned long long)tsfadjust); - wh = (struct ieee80211_hdr *)skb->data; - memcpy(&wh[1], &val, sizeof(val)); + hdr = (struct ieee80211_hdr *)skb->data; + memcpy(&hdr[1], &val, sizeof(val)); } bf->bf_buf_addr = bf->bf_dmacontext = @@ -425,9 +420,8 @@ int ath_beacon_alloc(struct ath_softc *sc, int if_id) * Reclaim beacon resources and return buffer to the pool. * * Checks the VAP to put the beacon frame buffer back to the ATH object - * queue, and de-allocates any wbuf frames that were sent as CAB traffic. + * queue, and de-allocates any skbs that were sent as CAB traffic. */ - void ath_beacon_return(struct ath_softc *sc, struct ath_vap *avp) { if (avp->av_bcbuf != NULL) { @@ -459,10 +453,7 @@ void ath_beacon_return(struct ath_softc *sc, struct ath_vap *avp) * Transmit one or more beacon frames at SWBA. Dynamic updates to the frame * contents are done as needed and the slot time is also adjusted based on * current state. - * - * This tasklet is not scheduled, it's called in ISR context. */ - void ath9k_beacon_tasklet(unsigned long data) { struct ath_softc *sc = (struct ath_softc *)data; @@ -490,6 +481,8 @@ void ath9k_beacon_tasklet(unsigned long data) * and wait for the next. Missed beacons indicate * a problem and should not occur. If we miss too * many consecutive beacons reset the device. + * + * FIXME: Clean up this mess !! */ if (ath9k_hw_numtxpending(ah, sc->sc_bhalq) != 0) { sc->sc_bmisscount++; @@ -505,19 +498,16 @@ void ath9k_beacon_tasklet(unsigned long data) __func__, sc->sc_bmisscount); if (show_cycles) { /* - * Display cycle counter stats - * from HW to aide in debug of - * stickiness. + * Display cycle counter stats from HW + * to aide in debug of stickiness. */ - DPRINTF(sc, - ATH_DBG_BEACON, + DPRINTF(sc, ATH_DBG_BEACON, "%s: busy times: rx_clear=%d, " "rx_frame=%d, tx_frame=%d\n", __func__, rx_clear, rx_frame, tx_frame); } else { - DPRINTF(sc, - ATH_DBG_BEACON, + DPRINTF(sc, ATH_DBG_BEACON, "%s: unable to obtain " "busy times\n", __func__); } @@ -529,8 +519,7 @@ void ath9k_beacon_tasklet(unsigned long data) } else if (sc->sc_bmisscount >= BSTUCK_THRESH) { if (sc->sc_flags & SC_OP_NO_RESET) { if (sc->sc_bmisscount == BSTUCK_THRESH) { - DPRINTF(sc, - ATH_DBG_BEACON, + DPRINTF(sc, ATH_DBG_BEACON, "%s: beacon is officially " "stuck\n", __func__); ath9k_hw_dmaRegDump(ah); @@ -542,13 +531,12 @@ void ath9k_beacon_tasklet(unsigned long data) ath_bstuck_process(sc); } } - return; } + if (sc->sc_bmisscount != 0) { if (sc->sc_flags & SC_OP_NO_RESET) { - DPRINTF(sc, - ATH_DBG_BEACON, + DPRINTF(sc, ATH_DBG_BEACON, "%s: resume beacon xmit after %u misses\n", __func__, sc->sc_bmisscount); } else { @@ -572,10 +560,12 @@ void ath9k_beacon_tasklet(unsigned long data) tsftu = TSF_TO_TU(tsf>>32, tsf); slot = ((tsftu % intval) * ATH_BCBUF) / intval; if_id = sc->sc_bslot[(slot + 1) % ATH_BCBUF]; + DPRINTF(sc, ATH_DBG_BEACON, - "%s: slot %d [tsf %llu tsftu %u intval %u] if_id %d\n", - __func__, slot, (unsigned long long) tsf, tsftu, - intval, if_id); + "%s: slot %d [tsf %llu tsftu %u intval %u] if_id %d\n", + __func__, slot, (unsigned long long)tsf, tsftu, + intval, if_id); + bfaddr = 0; if (if_id != ATH_IF_ID_ANY) { bf = ath_beacon_generate(sc, if_id); @@ -632,9 +622,8 @@ void ath9k_beacon_tasklet(unsigned long data) * Tasklet for Beacon Stuck processing * * Processing for Beacon Stuck. - * Basically calls the ath_internal_reset function to reset the chip. + * Basically resets the chip. */ - void ath_bstuck_process(struct ath_softc *sc) { DPRINTF(sc, ATH_DBG_BEACON, @@ -658,13 +647,12 @@ void ath_bstuck_process(struct ath_softc *sc) * interrupt when we stop seeing beacons from the AP * we've associated with. */ - void ath_beacon_config(struct ath_softc *sc, int if_id) { struct ath_hal *ah = sc->sc_ah; - u32 nexttbtt, intval; struct ath_beacon_config conf; enum ath9k_opmode av_opmode; + u32 nexttbtt, intval; if (if_id != ATH_IF_ID_ANY) av_opmode = sc->sc_vaps[if_id]->av_opmode; @@ -673,12 +661,6 @@ void ath_beacon_config(struct ath_softc *sc, int if_id) memzero(&conf, sizeof(struct ath_beacon_config)); - /* FIXME: Use default values for now - Sujith */ - /* Query beacon configuration first */ - /* - * Protocol stack doesn't support dynamic beacon configuration, - * use default configurations. - */ conf.beacon_interval = sc->hw->conf.beacon_int ? sc->hw->conf.beacon_int : ATH_DEFAULT_BINTVAL; conf.listen_interval = 1; @@ -704,12 +686,14 @@ void ath_beacon_config(struct ath_softc *sc, int if_id) intval = conf.beacon_interval & ATH9K_BEACON_PERIOD; } - if (nexttbtt == 0) /* e.g. for ap mode */ + if (nexttbtt == 0) /* e.g. for ap mode */ nexttbtt = intval; - else if (intval) /* NB: can be 0 for monitor mode */ + else if (intval) /* NB: can be 0 for monitor mode */ nexttbtt = roundup(nexttbtt, intval); + DPRINTF(sc, ATH_DBG_BEACON, "%s: nexttbtt %u intval %u (%u)\n", __func__, nexttbtt, intval, conf.beacon_interval); + /* Check for ATH9K_M_HOSTAP and sc_nostabeacons for WDS client */ if (sc->sc_ah->ah_opmode == ATH9K_M_STA) { struct ath9k_beacon_state bs; @@ -723,19 +707,19 @@ void ath_beacon_config(struct ath_softc *sc, int if_id) * last beacon we received (which may be none). */ dtimperiod = conf.dtim_period; - if (dtimperiod <= 0) /* NB: 0 if not known */ + if (dtimperiod <= 0) /* NB: 0 if not known */ dtimperiod = 1; dtimcount = conf.dtim_count; - if (dtimcount >= dtimperiod) /* NB: sanity check */ - dtimcount = 0; /* XXX? */ - cfpperiod = 1; /* NB: no PCF support yet */ + if (dtimcount >= dtimperiod) /* NB: sanity check */ + dtimcount = 0; + cfpperiod = 1; /* NB: no PCF support yet */ cfpcount = 0; sleepduration = conf.listen_interval * intval; if (sleepduration <= 0) sleepduration = intval; -#define FUDGE 2 +#define FUDGE 2 /* * Pull nexttbtt forward to reflect the current * TSF and calculate dtim+cfp state for the result. @@ -759,6 +743,7 @@ void ath_beacon_config(struct ath_softc *sc, int if_id) bs.bs_cfpperiod = cfpperiod*bs.bs_dtimperiod; bs.bs_cfpnext = bs.bs_nextdtim + cfpcount*bs.bs_dtimperiod; bs.bs_cfpmaxduration = 0; + /* * Calculate the number of consecutive beacons to miss * before taking a BMISS interrupt. The configuration @@ -767,9 +752,8 @@ void ath_beacon_config(struct ath_softc *sc, int if_id) * result to at most 15 beacons. */ if (sleepduration > intval) { - bs.bs_bmissthreshold = - conf.listen_interval * - ATH_DEFAULT_BMISS_LIMIT / 2; + bs.bs_bmissthreshold = conf.listen_interval * + ATH_DEFAULT_BMISS_LIMIT / 2; } else { bs.bs_bmissthreshold = DIV_ROUND_UP(conf.bmiss_timeout, intval); @@ -789,8 +773,8 @@ void ath_beacon_config(struct ath_softc *sc, int if_id) * XXX fixed at 100ms */ - bs.bs_sleepduration = - roundup(IEEE80211_MS_TO_TU(100), sleepduration); + bs.bs_sleepduration = roundup(IEEE80211_MS_TO_TU(100), + sleepduration); if (bs.bs_sleepduration > bs.bs_dtimperiod) bs.bs_sleepduration = bs.bs_dtimperiod; @@ -834,9 +818,9 @@ void ath_beacon_config(struct ath_softc *sc, int if_id) if (sc->sc_ah->ah_opmode == ATH9K_M_IBSS) { /* * Pull nexttbtt forward to reflect the current - * TSF . + * TSF */ -#define FUDGE 2 +#define FUDGE 2 if (!(intval & ATH9K_BEACON_RESET_TSF)) { tsf = ath9k_hw_gettsf64(ah); tsftu = TSF_TO_TU((u32)(tsf>>32), -- 1.6.0.2