From patchwork Sat Nov 7 20:18:46 2009 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luis Rodriguez X-Patchwork-Id: 58337 Received: from vger.kernel.org (vger.kernel.org [209.132.176.167]) by demeter.kernel.org (8.14.2/8.14.2) with ESMTP id nA7KJFRj011272 for ; Sat, 7 Nov 2009 20:19:15 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752842AbZKGUTG (ORCPT ); Sat, 7 Nov 2009 15:19:06 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752854AbZKGUTF (ORCPT ); Sat, 7 Nov 2009 15:19:05 -0500 Received: from bombadil.infradead.org ([18.85.46.34]:56108 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752716AbZKGUTC (ORCPT ); Sat, 7 Nov 2009 15:19:02 -0500 Received: from mcgrof by bombadil.infradead.org with local (Exim 4.69 #1 (Red Hat Linux)) id 1N6rkZ-0004h2-Ez; Sat, 07 Nov 2009 20:19:07 +0000 From: "Luis R. Rodriguez" To: linville@tuxdriver.com Cc: linux-wireless@vger.kernel.org, devel@driverdev.osuosl.org, mcgrof@gmail.com, "Luis R. Rodriguez" Subject: [PATCH 09/29] ath9k: do not pass the entire descriptor to ath_rx_prepare() Date: Sat, 7 Nov 2009 15:18:46 -0500 Message-Id: <1257625146-17971-10-git-send-email-lrodriguez@atheros.com> X-Mailer: git-send-email 1.6.2.rc1.3.g81d3f In-Reply-To: <1257625146-17971-1-git-send-email-lrodriguez@atheros.com> References: <1257625146-17971-1-git-send-email-lrodriguez@atheros.com> Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org diff --git a/drivers/net/wireless/ath/ath9k/recv.c b/drivers/net/wireless/ath/ath9k/recv.c index c6904f0..fd45f77 100644 --- a/drivers/net/wireless/ath/ath9k/recv.c +++ b/drivers/net/wireless/ath/ath9k/recv.c @@ -106,7 +106,7 @@ static u64 ath_extend_tsf(struct ath_softc *sc, u32 rstamp) * decryption key or real decryption error. This let us keep statistics there. */ static int ath_rx_prepare(struct ieee80211_hw *hw, - struct sk_buff *skb, struct ath_desc *ds, + struct sk_buff *skb, struct ath_rx_status *rx_stats, struct ieee80211_rx_status *rx_status, bool *decrypt_error, struct ath_softc *sc) { @@ -121,7 +121,7 @@ static int ath_rx_prepare(struct ieee80211_hw *hw, fc = hdr->frame_control; memset(rx_status, 0, sizeof(struct ieee80211_rx_status)); - if (ds->ds_rxstat.rs_more) { + if (rx_stats->rs_more) { /* * Frame spans multiple descriptors; this cannot happen yet * as we don't support jumbograms. If not in monitor mode, @@ -130,22 +130,22 @@ static int ath_rx_prepare(struct ieee80211_hw *hw, */ if (sc->sc_ah->opmode != NL80211_IFTYPE_MONITOR) goto rx_next; - } else if (ds->ds_rxstat.rs_status != 0) { - if (ds->ds_rxstat.rs_status & ATH9K_RXERR_CRC) + } else if (rx_stats->rs_status != 0) { + if (rx_stats->rs_status & ATH9K_RXERR_CRC) rx_status->flag |= RX_FLAG_FAILED_FCS_CRC; - if (ds->ds_rxstat.rs_status & ATH9K_RXERR_PHY) + if (rx_stats->rs_status & ATH9K_RXERR_PHY) goto rx_next; - if (ds->ds_rxstat.rs_status & ATH9K_RXERR_DECRYPT) { + if (rx_stats->rs_status & ATH9K_RXERR_DECRYPT) { *decrypt_error = true; - } else if (ds->ds_rxstat.rs_status & ATH9K_RXERR_MIC) { + } else if (rx_stats->rs_status & ATH9K_RXERR_MIC) { if (ieee80211_is_ctl(fc)) /* * Sometimes, we get invalid * MIC failures on valid control frames. * Remove these mic errors. */ - ds->ds_rxstat.rs_status &= ~ATH9K_RXERR_MIC; + rx_stats->rs_status &= ~ATH9K_RXERR_MIC; else rx_status->flag |= RX_FLAG_MMIC_ERROR; } @@ -155,26 +155,26 @@ static int ath_rx_prepare(struct ieee80211_hw *hw, * we also ignore the CRC error. */ if (sc->sc_ah->opmode == NL80211_IFTYPE_MONITOR) { - if (ds->ds_rxstat.rs_status & + if (rx_stats->rs_status & ~(ATH9K_RXERR_DECRYPT | ATH9K_RXERR_MIC | ATH9K_RXERR_CRC)) goto rx_next; } else { - if (ds->ds_rxstat.rs_status & + if (rx_stats->rs_status & ~(ATH9K_RXERR_DECRYPT | ATH9K_RXERR_MIC)) { goto rx_next; } } } - ratecode = ds->ds_rxstat.rs_rate; + ratecode = rx_stats->rs_rate; if (ratecode & 0x80) { /* HT rate */ rx_status->flag |= RX_FLAG_HT; - if (ds->ds_rxstat.rs_flags & ATH9K_RX_2040) + if (rx_stats->rs_flags & ATH9K_RX_2040) rx_status->flag |= RX_FLAG_40MHZ; - if (ds->ds_rxstat.rs_flags & ATH9K_RX_GI) + if (rx_stats->rs_flags & ATH9K_RX_GI) rx_status->flag |= RX_FLAG_SHORT_GI; rx_status->rate_idx = ratecode & 0x7f; } else { @@ -204,31 +204,31 @@ static int ath_rx_prepare(struct ieee80211_hw *hw, sta = ieee80211_find_sta_by_hw(hw, hdr->addr2); if (sta) { an = (struct ath_node *) sta->drv_priv; - if (ds->ds_rxstat.rs_rssi != ATH9K_RSSI_BAD && - !ds->ds_rxstat.rs_moreaggr) - ATH_RSSI_LPF(an->last_rssi, ds->ds_rxstat.rs_rssi); + if (rx_stats->rs_rssi != ATH9K_RSSI_BAD && + !rx_stats->rs_moreaggr) + ATH_RSSI_LPF(an->last_rssi, rx_stats->rs_rssi); last_rssi = an->last_rssi; } rcu_read_unlock(); if (likely(last_rssi != ATH_RSSI_DUMMY_MARKER)) - ds->ds_rxstat.rs_rssi = ATH_EP_RND(last_rssi, - ATH_RSSI_EP_MULTIPLIER); - if (ds->ds_rxstat.rs_rssi < 0) - ds->ds_rxstat.rs_rssi = 0; - else if (ds->ds_rxstat.rs_rssi > 127) - ds->ds_rxstat.rs_rssi = 127; + rx_stats->rs_rssi = ATH_EP_RND(last_rssi, + ATH_RSSI_EP_MULTIPLIER); + if (rx_stats->rs_rssi < 0) + rx_stats->rs_rssi = 0; + else if (rx_stats->rs_rssi > 127) + rx_stats->rs_rssi = 127; /* Update Beacon RSSI, this is used by ANI. */ if (ieee80211_is_beacon(fc)) - sc->sc_ah->stats.avgbrssi = ds->ds_rxstat.rs_rssi; + sc->sc_ah->stats.avgbrssi = rx_stats->rs_rssi; - rx_status->mactime = ath_extend_tsf(sc, ds->ds_rxstat.rs_tstamp); + rx_status->mactime = ath_extend_tsf(sc, rx_stats->rs_tstamp); rx_status->band = hw->conf.channel->band; rx_status->freq = hw->conf.channel->center_freq; rx_status->noise = sc->ani.noise_floor; - rx_status->signal = ATH_DEFAULT_NOISE_FLOOR + ds->ds_rxstat.rs_rssi; - rx_status->antenna = ds->ds_rxstat.rs_antenna; + rx_status->signal = ATH_DEFAULT_NOISE_FLOOR + rx_stats->rs_rssi; + rx_status->antenna = rx_stats->rs_antenna; /* * Theory for reporting quality: @@ -252,9 +252,9 @@ static int ath_rx_prepare(struct ieee80211_hw *hw, * */ if (conf_is_ht(&hw->conf)) - rx_status->qual = ds->ds_rxstat.rs_rssi * 100 / 45; + rx_status->qual = rx_stats->rs_rssi * 100 / 45; else - rx_status->qual = ds->ds_rxstat.rs_rssi * 100 / 35; + rx_status->qual = rx_stats->rs_rssi * 100 / 35; /* rssi can be more than 45 though, anything above that * should be considered at 100% */ @@ -659,6 +659,7 @@ int ath_rx_tasklet(struct ath_softc *sc, int flush) struct ath_buf *bf; struct ath_desc *ds; + struct ath_rx_status *rx_stats; struct sk_buff *skb = NULL, *requeue_skb; struct ieee80211_rx_status rx_status; struct ath_hw *ah = sc->sc_ah; @@ -750,6 +751,7 @@ int ath_rx_tasklet(struct ath_softc *sc, int flush) hdr = (struct ieee80211_hdr *) skb->data; hw = ath_get_virt_hw(sc, hdr); + rx_stats = &ds->ds_rxstat; /* * If we're asked to flush receive queue, directly @@ -758,14 +760,14 @@ int ath_rx_tasklet(struct ath_softc *sc, int flush) if (flush) goto requeue; - if (!ds->ds_rxstat.rs_datalen) + if (!rx_stats->rs_datalen) goto requeue; /* The status portion of the descriptor could get corrupted. */ - if (sc->rx.bufsize < ds->ds_rxstat.rs_datalen) + if (sc->rx.bufsize < rx_stats->rs_datalen) goto requeue; - if (!ath_rx_prepare(hw, skb, ds, + if (!ath_rx_prepare(hw, skb, rx_stats, &rx_status, &decrypt_error, sc)) goto requeue; @@ -785,7 +787,7 @@ int ath_rx_tasklet(struct ath_softc *sc, int flush) sc->rx.bufsize, DMA_FROM_DEVICE); - skb_put(skb, ds->ds_rxstat.rs_datalen); + skb_put(skb, rx_stats->rs_datalen); /* see if any padding is done by the hw and remove it */ hdrlen = ieee80211_get_hdrlen_from_skb(skb); @@ -805,7 +807,7 @@ int ath_rx_tasklet(struct ath_softc *sc, int flush) skb_pull(skb, padsize); } - keyix = ds->ds_rxstat.rs_keyix; + keyix = rx_stats->rs_keyix; if (!(keyix == ATH9K_RXKEYIX_INVALID) && !decrypt_error) { rx_status.flag |= RX_FLAG_DECRYPTED; @@ -845,7 +847,7 @@ int ath_rx_tasklet(struct ath_softc *sc, int flush) */ if (sc->rx.defant != ds->ds_rxstat.rs_antenna) { if (++sc->rx.rxotherant >= 3) - ath_setdefantenna(sc, ds->ds_rxstat.rs_antenna); + ath_setdefantenna(sc, rx_stats->rs_antenna); } else { sc->rx.rxotherant = 0; }