diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/recv.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/recv.c | 82 |
1 files changed, 79 insertions, 3 deletions
diff --git a/drivers/net/wireless/ath/ath9k/recv.c b/drivers/net/wireless/ath/ath9k/recv.c index 669734252664..d79837fe333f 100644 --- a/drivers/net/wireless/ath/ath9k/recv.c +++ b/drivers/net/wireless/ath/ath9k/recv.c @@ -867,10 +867,21 @@ static int ath9k_rx_skb_preprocess(struct ath_softc *sc, * can be dropped. */ if (rx_stats->rs_status & ATH9K_RXERR_PHY) { - ath9k_dfs_process_phyerr(sc, hdr, rx_stats, rx_status->mactime); - if (ath_cmn_process_fft(&sc->spec_priv, hdr, rx_stats, rx_status->mactime)) + /* + * DFS and spectral are mutually exclusive + * + * Since some chips use PHYERR_RADAR as indication for both, we + * need to double check which feature is enabled to prevent + * feeding spectral or dfs-detector with wrong frames. + */ + if (hw->conf.radar_enabled) { + ath9k_dfs_process_phyerr(sc, hdr, rx_stats, + rx_status->mactime); + } else if (sc->spec_priv.spectral_mode != SPECTRAL_DISABLED && + ath_cmn_process_fft(&sc->spec_priv, hdr, rx_stats, + rx_status->mactime)) { RX_STAT_INC(rx_spectral); - + } return -EINVAL; } @@ -991,6 +1002,70 @@ static void ath9k_apply_ampdu_details(struct ath_softc *sc, } } +static void ath_rx_count_airtime(struct ath_softc *sc, + struct ath_rx_status *rs, + struct sk_buff *skb) +{ + struct ath_node *an; + struct ath_acq *acq; + struct ath_vif *avp; + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; + struct ath_hw *ah = sc->sc_ah; + struct ath_common *common = ath9k_hw_common(ah); + struct ieee80211_sta *sta; + struct ieee80211_rx_status *rxs; + const struct ieee80211_rate *rate; + bool is_sgi, is_40, is_sp; + int phy; + u16 len = rs->rs_datalen; + u32 airtime = 0; + u8 tidno, acno; + + if (!ieee80211_is_data(hdr->frame_control)) + return; + + rcu_read_lock(); + + sta = ieee80211_find_sta_by_ifaddr(sc->hw, hdr->addr2, NULL); + if (!sta) + goto exit; + an = (struct ath_node *) sta->drv_priv; + avp = (struct ath_vif *) an->vif->drv_priv; + tidno = skb->priority & IEEE80211_QOS_CTL_TID_MASK; + acno = TID_TO_WME_AC(tidno); + acq = &avp->chanctx->acq[acno]; + + rxs = IEEE80211_SKB_RXCB(skb); + + is_sgi = !!(rxs->flag & RX_FLAG_SHORT_GI); + is_40 = !!(rxs->flag & RX_FLAG_40MHZ); + is_sp = !!(rxs->flag & RX_FLAG_SHORTPRE); + + if (!!(rxs->flag & RX_FLAG_HT)) { + /* MCS rates */ + + airtime += ath_pkt_duration(sc, rxs->rate_idx, len, + is_40, is_sgi, is_sp); + } else { + + phy = IS_CCK_RATE(rs->rs_rate) ? WLAN_RC_PHY_CCK : WLAN_RC_PHY_OFDM; + rate = &common->sbands[rxs->band].bitrates[rxs->rate_idx]; + airtime += ath9k_hw_computetxtime(ah, phy, rate->bitrate * 100, + len, rxs->rate_idx, is_sp); + } + + if (!!(sc->airtime_flags & AIRTIME_USE_RX)) { + spin_lock_bh(&acq->lock); + an->airtime_deficit[acno] -= airtime; + if (an->airtime_deficit[acno] <= 0) + __ath_tx_queue_tid(sc, ATH_AN_2_TID(an, tidno)); + spin_unlock_bh(&acq->lock); + } + ath_debug_airtime(sc, an, airtime, 0); +exit: + rcu_read_unlock(); +} + int ath_rx_tasklet(struct ath_softc *sc, int flush, bool hp) { struct ath_rxbuf *bf; @@ -1137,6 +1212,7 @@ int ath_rx_tasklet(struct ath_softc *sc, int flush, bool hp) ath9k_antenna_check(sc, &rs); ath9k_apply_ampdu_details(sc, &rs, rxs); ath_debug_rate_stats(sc, &rs, skb); + ath_rx_count_airtime(sc, &rs, skb); hdr = (struct ieee80211_hdr *)skb->data; if (ieee80211_is_ack(hdr->frame_control)) |