From patchwork Mon Jul 9 16:37:05 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Toke_H=C3=B8iland-J=C3=B8rgensen?= X-Patchwork-Id: 10515227 X-Patchwork-Delegate: johannes@sipsolutions.net Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 602BF6032C for ; Mon, 9 Jul 2018 16:37:20 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4D01F28D57 for ; Mon, 9 Jul 2018 16:37:20 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 415AA28D5B; Mon, 9 Jul 2018 16:37:20 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E1B0928D58 for ; Mon, 9 Jul 2018 16:37:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933237AbeGIQhR (ORCPT ); Mon, 9 Jul 2018 12:37:17 -0400 Received: from mail.toke.dk ([52.28.52.200]:48189 "EHLO mail.toke.dk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932770AbeGIQhJ (ORCPT ); Mon, 9 Jul 2018 12:37:09 -0400 Subject: [RFC v2 4/4] ath9k: Switch to mac80211 TXQ scheduling and airtime APIs DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=toke.dk; s=20161023; t=1531154226; bh=5JW2rD3aVPCKevETUXyQDmHWfshNt+H/tQXcSIK1zDc=; h=Subject:From:To:Cc:Date:In-Reply-To:References:From; b=PshG+jYxA4/jK8U9keoeXcsQROfNIdcxpZ8chp34auVZa59jTmVqvh/8KmNaEgBAU JoTyrCBsMLtjUPUAqvVPeWaHlBvArk6nQgDzKnb+KSAQBA6wvf1k/U9JMl0GWHoLig /FXKud4XSojEPHEn1fuW/SoPjCFOmW/Ops5BO+GjBFmcm2aoYsVvhhtY/DAqjmMYiL /yU4IPxWV5nAdr005VVSx1O6J3aRvk8Biiu3XvKVDgaqfSSKZshuC3hSLxbV3uECav RBCYHswv4tVlaEObdgW74tIHuodcTxKXcoYD8zb+EVRDmq6inw7QXNZPFoxxojEN7Y R5A1By6qza24w== From: Toke =?utf-8?q?H=C3=B8iland-J=C3=B8rgensen?= To: linux-wireless@vger.kernel.org Cc: make-wifi-fast@lists.bufferbloat.net, Felix Fietkau Date: Mon, 09 Jul 2018 18:37:05 +0200 X-Clacks-Overhead: GNU Terry Pratchett Message-ID: <153115422517.7447.43763883719180480.stgit@alrua-x1> In-Reply-To: <153115421866.7447.6363834356268564403.stgit@alrua-x1> References: <153115421866.7447.6363834356268564403.stgit@alrua-x1> MIME-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This moves the ath9k driver to use the mac80211 TXQ scheduling and airtime accounting APIs, removing the corresponding state tracking inside the driver. Signed-off-by: Toke Høiland-Jørgensen --- drivers/net/wireless/ath/ath9k/ath9k.h | 14 -- drivers/net/wireless/ath/ath9k/debug.c | 3 drivers/net/wireless/ath/ath9k/debug.h | 8 - drivers/net/wireless/ath/ath9k/debug_sta.c | 54 ------ drivers/net/wireless/ath/ath9k/init.c | 3 drivers/net/wireless/ath/ath9k/recv.c | 9 - drivers/net/wireless/ath/ath9k/xmit.c | 245 ++++++++-------------------- 7 files changed, 76 insertions(+), 260 deletions(-) diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h index ef0de4f1312c..f01aedfef24f 100644 --- a/drivers/net/wireless/ath/ath9k/ath9k.h +++ b/drivers/net/wireless/ath/ath9k/ath9k.h @@ -112,8 +112,6 @@ int ath_descdma_setup(struct ath_softc *sc, struct ath_descdma *dd, #define ATH_TXFIFO_DEPTH 8 #define ATH_TX_ERROR 0x01 -#define ATH_AIRTIME_QUANTUM 300 /* usec */ - /* Stop tx traffic 1ms before the GO goes away */ #define ATH_P2P_PS_STOP_TIME 1000 @@ -246,10 +244,8 @@ struct ath_atx_tid { s8 bar_index; bool active; bool clear_ps_filter; - bool has_queued; }; -void __ath_tx_queue_tid(struct ath_softc *sc, struct ath_atx_tid *tid); void ath_tx_queue_tid(struct ath_softc *sc, struct ath_atx_tid *tid); struct ath_node { @@ -263,12 +259,9 @@ struct ath_node { bool sleeping; bool no_ps_filter; - s64 airtime_deficit[IEEE80211_NUM_ACS]; - u32 airtime_rx_start; #ifdef CONFIG_ATH9K_STATION_STATISTICS struct ath_rx_rate_stats rx_rate_stats; - struct ath_airtime_stats airtime_stats; #endif u8 key_idx[4]; @@ -986,11 +979,6 @@ void ath_ant_comb_scan(struct ath_softc *sc, struct ath_rx_status *rs); #define ATH9K_NUM_CHANCTX 2 /* supports 2 operating channels */ -#define AIRTIME_USE_TX BIT(0) -#define AIRTIME_USE_RX BIT(1) -#define AIRTIME_USE_NEW_QUEUES BIT(2) -#define AIRTIME_ACTIVE(flags) (!!(flags & (AIRTIME_USE_TX|AIRTIME_USE_RX))) - struct ath_softc { struct ieee80211_hw *hw; struct device *dev; @@ -1034,8 +1022,6 @@ struct ath_softc { short nbcnvifs; unsigned long ps_usecount; - u16 airtime_flags; /* AIRTIME_* */ - struct ath_rx rx; struct ath_tx tx; struct ath_beacon beacon; diff --git a/drivers/net/wireless/ath/ath9k/debug.c b/drivers/net/wireless/ath/ath9k/debug.c index f685843a2ff3..ce62da4840e2 100644 --- a/drivers/net/wireless/ath/ath9k/debug.c +++ b/drivers/net/wireless/ath/ath9k/debug.c @@ -1456,9 +1456,6 @@ int ath9k_init_debug(struct ath_hw *ah) #endif debugfs_create_file("tpc", 0600, sc->debug.debugfs_phy, sc, &fops_tpc); - debugfs_create_u16("airtime_flags", 0600, - sc->debug.debugfs_phy, &sc->airtime_flags); - debugfs_create_file("nf_override", 0600, sc->debug.debugfs_phy, sc, &fops_nf_override); diff --git a/drivers/net/wireless/ath/ath9k/debug.h b/drivers/net/wireless/ath/ath9k/debug.h index 249f8141cd00..559d9628f280 100644 --- a/drivers/net/wireless/ath/ath9k/debug.h +++ b/drivers/net/wireless/ath/ath9k/debug.h @@ -319,20 +319,12 @@ ath9k_debug_sync_cause(struct ath_softc *sc, u32 sync_cause) void ath_debug_rate_stats(struct ath_softc *sc, struct ath_rx_status *rs, struct sk_buff *skb); -void ath_debug_airtime(struct ath_softc *sc, - struct ath_node *an, - u32 rx, u32 tx); #else static inline void ath_debug_rate_stats(struct ath_softc *sc, struct ath_rx_status *rs, struct sk_buff *skb) { } -static inline void ath_debug_airtime(struct ath_softc *sc, - struct ath_node *an, - u32 rx, u32 tx) -{ -} #endif /* CONFIG_ATH9K_STATION_STATISTICS */ #endif /* DEBUG_H */ diff --git a/drivers/net/wireless/ath/ath9k/debug_sta.c b/drivers/net/wireless/ath/ath9k/debug_sta.c index a6f45f1bb5bb..bb6f3250aa30 100644 --- a/drivers/net/wireless/ath/ath9k/debug_sta.c +++ b/drivers/net/wireless/ath/ath9k/debug_sta.c @@ -242,59 +242,6 @@ static const struct file_operations fops_node_recv = { .llseek = default_llseek, }; -void ath_debug_airtime(struct ath_softc *sc, - struct ath_node *an, - u32 rx, - u32 tx) -{ - struct ath_airtime_stats *astats = &an->airtime_stats; - - astats->rx_airtime += rx; - astats->tx_airtime += tx; -} - -static ssize_t read_airtime(struct file *file, char __user *user_buf, - size_t count, loff_t *ppos) -{ - struct ath_node *an = file->private_data; - struct ath_airtime_stats *astats; - static const char *qname[4] = { - "VO", "VI", "BE", "BK" - }; - u32 len = 0, size = 256; - char *buf; - size_t retval; - int i; - - buf = kzalloc(size, GFP_KERNEL); - if (buf == NULL) - return -ENOMEM; - - astats = &an->airtime_stats; - - len += scnprintf(buf + len, size - len, "RX: %u us\n", astats->rx_airtime); - len += scnprintf(buf + len, size - len, "TX: %u us\n", astats->tx_airtime); - len += scnprintf(buf + len, size - len, "Deficit: "); - for (i = 0; i < 4; i++) - len += scnprintf(buf+len, size - len, "%s: %lld us ", qname[i], an->airtime_deficit[i]); - if (len < size) - buf[len++] = '\n'; - - retval = simple_read_from_buffer(user_buf, count, ppos, buf, len); - kfree(buf); - - return retval; -} - - -static const struct file_operations fops_airtime = { - .read = read_airtime, - .open = simple_open, - .owner = THIS_MODULE, - .llseek = default_llseek, -}; - - void ath9k_sta_add_debugfs(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_sta *sta, @@ -304,5 +251,4 @@ void ath9k_sta_add_debugfs(struct ieee80211_hw *hw, debugfs_create_file("node_aggr", 0444, dir, an, &fops_node_aggr); debugfs_create_file("node_recv", 0444, dir, an, &fops_node_recv); - debugfs_create_file("airtime", 0444, dir, an, &fops_airtime); } diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c index c070a9e51ebf..45a31f8a1514 100644 --- a/drivers/net/wireless/ath/ath9k/init.c +++ b/drivers/net/wireless/ath/ath9k/init.c @@ -676,8 +676,6 @@ static int ath9k_init_softc(u16 devid, struct ath_softc *sc, /* Will be cleared in ath9k_start() */ set_bit(ATH_OP_INVALID, &common->op_flags); - sc->airtime_flags = (AIRTIME_USE_TX | AIRTIME_USE_RX | - AIRTIME_USE_NEW_QUEUES); sc->sc_ah = ah; sc->dfs_detector = dfs_pattern_detector_init(common, NL80211_DFS_UNSET); @@ -1013,6 +1011,7 @@ static void ath9k_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw) SET_IEEE80211_PERM_ADDR(hw, common->macaddr); wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST); + wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_AIRTIME_FAIRNESS); } int ath9k_init_device(u16 devid, struct ath_softc *sc, diff --git a/drivers/net/wireless/ath/ath9k/recv.c b/drivers/net/wireless/ath/ath9k/recv.c index a8ac42c96d71..fef8fbe12f45 100644 --- a/drivers/net/wireless/ath/ath9k/recv.c +++ b/drivers/net/wireless/ath/ath9k/recv.c @@ -1054,14 +1054,7 @@ static void ath_rx_count_airtime(struct ath_softc *sc, 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); + ieee80211_sta_register_airtime(sta, tidno, 0, airtime); exit: rcu_read_unlock(); } diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c index 7fdb152be0bb..5b6a1e3c3f24 100644 --- a/drivers/net/wireless/ath/ath9k/xmit.c +++ b/drivers/net/wireless/ath/ath9k/xmit.c @@ -112,44 +112,14 @@ void ath_txq_unlock_complete(struct ath_softc *sc, struct ath_txq *txq) ath_tx_status(hw, skb); } -void __ath_tx_queue_tid(struct ath_softc *sc, struct ath_atx_tid *tid) -{ - struct ath_vif *avp = (struct ath_vif *) tid->an->vif->drv_priv; - struct ath_chanctx *ctx = avp->chanctx; - struct ath_acq *acq; - struct list_head *tid_list; - u8 acno = TID_TO_WME_AC(tid->tidno); - - if (!ctx || !list_empty(&tid->list)) - return; - - - acq = &ctx->acq[acno]; - if ((sc->airtime_flags & AIRTIME_USE_NEW_QUEUES) && - tid->an->airtime_deficit[acno] > 0) - tid_list = &acq->acq_new; - else - tid_list = &acq->acq_old; - - list_add_tail(&tid->list, tid_list); -} - void ath_tx_queue_tid(struct ath_softc *sc, struct ath_atx_tid *tid) { - struct ath_vif *avp = (struct ath_vif *) tid->an->vif->drv_priv; - struct ath_chanctx *ctx = avp->chanctx; - struct ath_acq *acq; + struct ieee80211_txq *queue = + container_of((void *)tid, struct ieee80211_txq, drv_priv); - if (!ctx || !list_empty(&tid->list)) - return; - - acq = &ctx->acq[TID_TO_WME_AC(tid->tidno)]; - spin_lock_bh(&acq->lock); - __ath_tx_queue_tid(sc, tid); - spin_unlock_bh(&acq->lock); + ieee80211_schedule_txq(sc->hw, queue, true); } - void ath9k_wake_tx_queue(struct ieee80211_hw *hw, struct ieee80211_txq *queue) { struct ath_softc *sc = hw->priv; @@ -162,11 +132,7 @@ void ath9k_wake_tx_queue(struct ieee80211_hw *hw, struct ieee80211_txq *queue) tid->tidno); ath_txq_lock(sc, txq); - - tid->has_queued = true; - ath_tx_queue_tid(sc, tid); ath_txq_schedule(sc, txq); - ath_txq_unlock(sc, txq); } @@ -216,8 +182,8 @@ ath_get_skb_tid(struct ath_softc *sc, struct ath_node *an, struct sk_buff *skb) return ATH_AN_2_TID(an, tidno); } -static struct sk_buff * -ath_tid_pull(struct ath_atx_tid *tid) +static int +ath_tid_pull(struct ath_atx_tid *tid, struct sk_buff **skbuf) { struct ieee80211_txq *txq = container_of((void*)tid, struct ieee80211_txq, drv_priv); struct ath_softc *sc = tid->an->sc; @@ -228,20 +194,16 @@ ath_tid_pull(struct ath_atx_tid *tid) }; struct sk_buff *skb; struct ath_frame_info *fi; - int q; - - if (!tid->has_queued) - return NULL; + int q, ret; skb = ieee80211_tx_dequeue(hw, txq); - if (!skb) { - tid->has_queued = false; - return NULL; - } + if (!skb) + return -ENOENT; - if (ath_tx_prepare(hw, skb, &txctl)) { + ret = ath_tx_prepare(hw, skb, &txctl); + if (ret) { ieee80211_free_txskb(hw, skb); - return NULL; + return ret; } q = skb_get_queue_mapping(skb); @@ -251,24 +213,19 @@ ath_tid_pull(struct ath_atx_tid *tid) ++tid->txq->pending_frames; } - return skb; -} - - -static bool ath_tid_has_buffered(struct ath_atx_tid *tid) -{ - return !skb_queue_empty(&tid->retry_q) || tid->has_queued; + *skbuf = skb; + return 0; } -static struct sk_buff *ath_tid_dequeue(struct ath_atx_tid *tid) +static int ath_tid_dequeue(struct ath_atx_tid *tid, + struct sk_buff **skb) { - struct sk_buff *skb; - - skb = __skb_dequeue(&tid->retry_q); - if (!skb) - skb = ath_tid_pull(tid); + int ret = 0; + *skb = __skb_dequeue(&tid->retry_q); + if (!*skb) + ret = ath_tid_pull(tid, skb); - return skb; + return ret; } static void ath_tx_flush_tid(struct ath_softc *sc, struct ath_atx_tid *tid) @@ -356,11 +313,12 @@ static void ath_tid_drain(struct ath_softc *sc, struct ath_txq *txq, struct list_head bf_head; struct ath_tx_status ts; struct ath_frame_info *fi; + int ret; memset(&ts, 0, sizeof(ts)); INIT_LIST_HEAD(&bf_head); - while ((skb = ath_tid_dequeue(tid))) { + while ((ret = ath_tid_dequeue(tid, &skb)) == 0) { fi = get_frame_info(skb); bf = fi->bf; @@ -672,7 +630,6 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq, skb_queue_splice_tail(&bf_pending, &tid->retry_q); if (!an->sleeping) { ath_tx_queue_tid(sc, tid); - if (ts->ts_status & (ATH9K_TXERR_FILT | ATH9K_TXERR_XRETRY)) tid->clear_ps_filter = true; } @@ -699,11 +656,11 @@ static bool bf_is_ampdu_not_probing(struct ath_buf *bf) return bf_isampdu(bf) && !(info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE); } -static void ath_tx_count_airtime(struct ath_softc *sc, struct ath_node *an, - struct ath_atx_tid *tid, struct ath_buf *bf, +static void ath_tx_count_airtime(struct ath_softc *sc, + struct ieee80211_sta *sta, + struct ath_buf *bf, struct ath_tx_status *ts) { - struct ath_txq *txq = tid->txq; u32 airtime = 0; int i; @@ -713,17 +670,7 @@ static void ath_tx_count_airtime(struct ath_softc *sc, struct ath_node *an, airtime += rate_dur * bf->rates[i].count; } - if (sc->airtime_flags & AIRTIME_USE_TX) { - int q = txq->mac80211_qnum; - struct ath_acq *acq = &sc->cur_chan->acq[q]; - - spin_lock_bh(&acq->lock); - an->airtime_deficit[q] -= airtime; - if (an->airtime_deficit[q] <= 0) - __ath_tx_queue_tid(sc, tid); - spin_unlock_bh(&acq->lock); - } - ath_debug_airtime(sc, an, 0, airtime); + ieee80211_sta_register_airtime(sta, ts->tid, airtime, 0); } static void ath_tx_process_buffer(struct ath_softc *sc, struct ath_txq *txq, @@ -753,7 +700,7 @@ static void ath_tx_process_buffer(struct ath_softc *sc, struct ath_txq *txq, if (sta) { struct ath_node *an = (struct ath_node *)sta->drv_priv; tid = ath_get_skb_tid(sc, an, bf->bf_mpdu); - ath_tx_count_airtime(sc, an, tid, bf, ts); + ath_tx_count_airtime(sc, sta, bf, ts); if (ts->ts_status & (ATH9K_TXERR_FILT | ATH9K_TXERR_XRETRY)) tid->clear_ps_filter = true; } @@ -937,20 +884,21 @@ static int ath_compute_num_delims(struct ath_softc *sc, struct ath_atx_tid *tid, return ndelim; } -static struct ath_buf * +static int ath_tx_get_tid_subframe(struct ath_softc *sc, struct ath_txq *txq, - struct ath_atx_tid *tid) + struct ath_atx_tid *tid, struct ath_buf **buf) { struct ieee80211_tx_info *tx_info; struct ath_frame_info *fi; - struct sk_buff *skb, *first_skb = NULL; struct ath_buf *bf; + struct sk_buff *skb, *first_skb = NULL; u16 seqno; + int ret; while (1) { - skb = ath_tid_dequeue(tid); - if (!skb) - break; + ret = ath_tid_dequeue(tid, &skb); + if (ret < 0) + return ret; fi = get_frame_info(skb); bf = fi->bf; @@ -981,7 +929,7 @@ ath_tx_get_tid_subframe(struct ath_softc *sc, struct ath_txq *txq, if (!(tx_info->flags & IEEE80211_TX_CTL_AMPDU)) { bf->bf_state.bf_type = 0; - return bf; + break; } bf->bf_state.bf_type = BUF_AMPDU | BUF_AGGR; @@ -1000,7 +948,7 @@ ath_tx_get_tid_subframe(struct ath_softc *sc, struct ath_txq *txq, first_skb = skb; continue; } - break; + return -EINPROGRESS; } if (tid->bar_index > ATH_BA_INDEX(tid->seq_start, seqno)) { @@ -1014,10 +962,11 @@ ath_tx_get_tid_subframe(struct ath_softc *sc, struct ath_txq *txq, continue; } - return bf; + break; } - return NULL; + *buf = bf; + return 0; } static int @@ -1027,7 +976,7 @@ ath_tx_form_aggr(struct ath_softc *sc, struct ath_txq *txq, { #define PADBYTES(_len) ((4 - ((_len) % 4)) % 4) struct ath_buf *bf = bf_first, *bf_prev = NULL; - int nframes = 0, ndelim; + int nframes = 0, ndelim, ret; u16 aggr_limit = 0, al = 0, bpad = 0, al_delta, h_baw = tid->baw_size / 2; struct ieee80211_tx_info *tx_info; @@ -1081,7 +1030,9 @@ ath_tx_form_aggr(struct ath_softc *sc, struct ath_txq *txq, bf_prev = bf; - bf = ath_tx_get_tid_subframe(sc, txq, tid); + ret = ath_tx_get_tid_subframe(sc, txq, tid, &bf); + if (ret < 0) + break; } goto finish; stop: @@ -1478,7 +1429,7 @@ ath_tx_form_burst(struct ath_softc *sc, struct ath_txq *txq, struct ath_buf *bf_first) { struct ath_buf *bf = bf_first, *bf_prev = NULL; - int nframes = 0; + int nframes = 0, ret; do { struct ieee80211_tx_info *tx_info; @@ -1492,8 +1443,8 @@ ath_tx_form_burst(struct ath_softc *sc, struct ath_txq *txq, if (nframes >= 2) break; - bf = ath_tx_get_tid_subframe(sc, txq, tid); - if (!bf) + ret = ath_tx_get_tid_subframe(sc, txq, tid, &bf); + if (ret < 0) break; tx_info = IEEE80211_SKB_CB(bf->bf_mpdu); @@ -1506,30 +1457,27 @@ ath_tx_form_burst(struct ath_softc *sc, struct ath_txq *txq, } while (1); } -static bool ath_tx_sched_aggr(struct ath_softc *sc, struct ath_txq *txq, - struct ath_atx_tid *tid) +static int ath_tx_sched_aggr(struct ath_softc *sc, struct ath_txq *txq, + struct ath_atx_tid *tid) { - struct ath_buf *bf; + struct ath_buf *bf = NULL; struct ieee80211_tx_info *tx_info; struct list_head bf_q; - int aggr_len = 0; + int aggr_len = 0, ret; bool aggr; - if (!ath_tid_has_buffered(tid)) - return false; - INIT_LIST_HEAD(&bf_q); - bf = ath_tx_get_tid_subframe(sc, txq, tid); - if (!bf) - return false; + ret = ath_tx_get_tid_subframe(sc, txq, tid, &bf); + if (ret < 0) + return ret; tx_info = IEEE80211_SKB_CB(bf->bf_mpdu); aggr = !!(tx_info->flags & IEEE80211_TX_CTL_AMPDU); if ((aggr && txq->axq_ampdu_depth >= ATH_AGGR_MIN_QDEPTH) || (!aggr && txq->axq_depth >= ATH_NON_AGGR_MIN_QDEPTH)) { __skb_queue_tail(&tid->retry_q, bf->bf_mpdu); - return false; + return -EBUSY; } ath_set_rates(tid->an->vif, tid->an->sta, bf); @@ -1539,7 +1487,7 @@ static bool ath_tx_sched_aggr(struct ath_softc *sc, struct ath_txq *txq, ath_tx_form_burst(sc, txq, tid, &bf_q, bf); if (list_empty(&bf_q)) - return false; + return -EAGAIN; if (tid->clear_ps_filter || tid->an->no_ps_filter) { tid->clear_ps_filter = false; @@ -1548,7 +1496,7 @@ static bool ath_tx_sched_aggr(struct ath_softc *sc, struct ath_txq *txq, ath_tx_fill_desc(sc, bf, txq, aggr_len); ath_tx_txqaddbuf(sc, txq, &bf_q, false); - return true; + return 0; } int ath_tx_aggr_start(struct ath_softc *sc, struct ieee80211_sta *sta, @@ -1611,28 +1559,16 @@ void ath_tx_aggr_sleep(struct ieee80211_sta *sta, struct ath_softc *sc, { struct ath_common *common = ath9k_hw_common(sc->sc_ah); struct ath_atx_tid *tid; - struct ath_txq *txq; int tidno; ath_dbg(common, XMIT, "%s called\n", __func__); for (tidno = 0; tidno < IEEE80211_NUM_TIDS; tidno++) { tid = ath_node_to_tid(an, tidno); - txq = tid->txq; - - ath_txq_lock(sc, txq); - - if (list_empty(&tid->list)) { - ath_txq_unlock(sc, txq); - continue; - } if (!skb_queue_empty(&tid->retry_q)) ieee80211_sta_set_buffered(sta, tid->tidno, true); - list_del_init(&tid->list); - - ath_txq_unlock(sc, txq); } } @@ -1651,11 +1587,12 @@ void ath_tx_aggr_wakeup(struct ath_softc *sc, struct ath_node *an) ath_txq_lock(sc, txq); tid->clear_ps_filter = true; - if (ath_tid_has_buffered(tid)) { + if (!skb_queue_empty(&tid->retry_q)) { ath_tx_queue_tid(sc, tid); ath_txq_schedule(sc, txq); } ath_txq_unlock_complete(sc, txq); + } } @@ -1670,9 +1607,9 @@ void ath9k_release_buffered_frames(struct ieee80211_hw *hw, struct ath_txq *txq = sc->tx.uapsdq; struct ieee80211_tx_info *info; struct list_head bf_q; - struct ath_buf *bf_tail = NULL, *bf; + struct ath_buf *bf_tail = NULL, *bf = NULL; int sent = 0; - int i; + int i, ret; INIT_LIST_HEAD(&bf_q); for (i = 0; tids && nframes; i++, tids >>= 1) { @@ -1685,8 +1622,9 @@ void ath9k_release_buffered_frames(struct ieee80211_hw *hw, ath_txq_lock(sc, tid->txq); while (nframes > 0) { - bf = ath_tx_get_tid_subframe(sc, sc->tx.uapsdq, tid); - if (!bf) + ret = ath_tx_get_tid_subframe(sc, sc->tx.uapsdq, + tid, &bf); + if (ret < 0) break; list_add_tail(&bf->list, &bf_q); @@ -1950,11 +1888,12 @@ void ath_tx_cleanupq(struct ath_softc *sc, struct ath_txq *txq) */ void ath_txq_schedule(struct ath_softc *sc, struct ath_txq *txq) { + struct ieee80211_hw *hw = sc->hw; struct ath_common *common = ath9k_hw_common(sc->sc_ah); + struct ieee80211_txq *queue; struct ath_atx_tid *tid; - struct list_head *tid_list; - struct ath_acq *acq; - bool active = AIRTIME_ACTIVE(sc->airtime_flags); + bool first = true; + int ret; if (txq->mac80211_qnum < 0) return; @@ -1964,51 +1903,19 @@ void ath_txq_schedule(struct ath_softc *sc, struct ath_txq *txq) spin_lock_bh(&sc->chan_lock); rcu_read_lock(); - acq = &sc->cur_chan->acq[txq->mac80211_qnum]; if (sc->cur_chan->stopped) goto out; -begin: - tid_list = &acq->acq_new; - if (list_empty(tid_list)) { - tid_list = &acq->acq_old; - if (list_empty(tid_list)) - goto out; - } - tid = list_first_entry(tid_list, struct ath_atx_tid, list); - - if (active && tid->an->airtime_deficit[txq->mac80211_qnum] <= 0) { - spin_lock_bh(&acq->lock); - tid->an->airtime_deficit[txq->mac80211_qnum] += ATH_AIRTIME_QUANTUM; - list_move_tail(&tid->list, &acq->acq_old); - spin_unlock_bh(&acq->lock); - goto begin; - } - - if (!ath_tid_has_buffered(tid)) { - spin_lock_bh(&acq->lock); - if ((tid_list == &acq->acq_new) && !list_empty(&acq->acq_old)) - list_move_tail(&tid->list, &acq->acq_old); - else { - list_del_init(&tid->list); - } - spin_unlock_bh(&acq->lock); - goto begin; - } + while ((queue = ieee80211_next_txq(hw, txq->mac80211_qnum, first))) { + tid = (struct ath_atx_tid *)queue->drv_priv; + first = false; + ret = ath_tx_sched_aggr(sc, txq, tid); + ath_dbg(common, QUEUE, "ath_tx_sched_aggr returned %d\n", ret); - /* - * If we succeed in scheduling something, immediately restart to make - * sure we keep the HW busy. - */ - if(ath_tx_sched_aggr(sc, txq, tid)) { - if (!active) { - spin_lock_bh(&acq->lock); - list_move_tail(&tid->list, &acq->acq_old); - spin_unlock_bh(&acq->lock); - } - goto begin; + if (ret != -ENOENT) + ieee80211_schedule_txq(hw, queue, (ret == 0)); } out: @@ -2863,9 +2770,6 @@ void ath_tx_node_init(struct ath_softc *sc, struct ath_node *an) struct ath_atx_tid *tid; int tidno, acno; - for (acno = 0; acno < IEEE80211_NUM_ACS; acno++) - an->airtime_deficit[acno] = ATH_AIRTIME_QUANTUM; - for (tidno = 0; tidno < IEEE80211_NUM_TIDS; tidno++) { tid = ath_node_to_tid(an, tidno); tid->an = an; @@ -2875,7 +2779,6 @@ void ath_tx_node_init(struct ath_softc *sc, struct ath_node *an) tid->baw_head = tid->baw_tail = 0; tid->active = false; tid->clear_ps_filter = true; - tid->has_queued = false; __skb_queue_head_init(&tid->retry_q); INIT_LIST_HEAD(&tid->list); acno = TID_TO_WME_AC(tidno);