diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/xmit.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/xmit.c | 333 |
1 files changed, 266 insertions, 67 deletions
diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c index 1c9b1bac8b0d..7e19d9b5214e 100644 --- a/drivers/net/wireless/ath/ath9k/xmit.c +++ b/drivers/net/wireless/ath/ath9k/xmit.c @@ -518,6 +518,10 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq, ath_tx_complete_buf(sc, bf, txq, &bf_head, ts, !txfail); } else { + if (tx_info->flags & IEEE80211_TX_STATUS_EOSP) { + tx_info->flags &= ~IEEE80211_TX_STATUS_EOSP; + ieee80211_sta_eosp(sta); + } /* retry the un-acked ones */ if (bf->bf_next == NULL && bf_last->bf_stale) { struct ath_buf *tbf; @@ -786,25 +790,20 @@ static int ath_compute_num_delims(struct ath_softc *sc, struct ath_atx_tid *tid, return ndelim; } -static enum ATH_AGGR_STATUS ath_tx_form_aggr(struct ath_softc *sc, - struct ath_txq *txq, - struct ath_atx_tid *tid, - struct list_head *bf_q, - int *aggr_len) +static struct ath_buf * +ath_tx_get_tid_subframe(struct ath_softc *sc, struct ath_txq *txq, + struct ath_atx_tid *tid) { -#define PADBYTES(_len) ((4 - ((_len) % 4)) % 4) - struct ath_buf *bf, *bf_first = NULL, *bf_prev = NULL; - int rl = 0, nframes = 0, ndelim, prev_al = 0; - u16 aggr_limit = 0, al = 0, bpad = 0, - al_delta, h_baw = tid->baw_size / 2; - enum ATH_AGGR_STATUS status = ATH_AGGR_DONE; - struct ieee80211_tx_info *tx_info; struct ath_frame_info *fi; struct sk_buff *skb; + struct ath_buf *bf; u16 seqno; - do { + while (1) { skb = skb_peek(&tid->buf_q); + if (!skb) + break; + fi = get_frame_info(skb); bf = fi->bf; if (!fi->bf) @@ -820,10 +819,8 @@ static enum ATH_AGGR_STATUS ath_tx_form_aggr(struct ath_softc *sc, seqno = bf->bf_state.seqno; /* do not step over block-ack window */ - if (!BAW_WITHIN(tid->seq_start, tid->baw_size, seqno)) { - status = ATH_AGGR_BAW_CLOSED; + if (!BAW_WITHIN(tid->seq_start, tid->baw_size, seqno)) break; - } if (tid->bar_index > ATH_BA_INDEX(tid->seq_start, seqno)) { struct ath_tx_status ts = {}; @@ -837,6 +834,40 @@ static enum ATH_AGGR_STATUS ath_tx_form_aggr(struct ath_softc *sc, continue; } + bf->bf_next = NULL; + bf->bf_lastbf = bf; + return bf; + } + + return NULL; +} + +static enum ATH_AGGR_STATUS ath_tx_form_aggr(struct ath_softc *sc, + struct ath_txq *txq, + struct ath_atx_tid *tid, + struct list_head *bf_q, + int *aggr_len) +{ +#define PADBYTES(_len) ((4 - ((_len) % 4)) % 4) + struct ath_buf *bf, *bf_first = NULL, *bf_prev = NULL; + int rl = 0, nframes = 0, ndelim, prev_al = 0; + u16 aggr_limit = 0, al = 0, bpad = 0, + al_delta, h_baw = tid->baw_size / 2; + enum ATH_AGGR_STATUS status = ATH_AGGR_DONE; + struct ieee80211_tx_info *tx_info; + struct ath_frame_info *fi; + struct sk_buff *skb; + + do { + bf = ath_tx_get_tid_subframe(sc, txq, tid); + if (!bf) { + status = ATH_AGGR_BAW_CLOSED; + break; + } + + skb = bf->bf_mpdu; + fi = get_frame_info(skb); + if (!bf_first) bf_first = bf; @@ -882,7 +913,7 @@ static enum ATH_AGGR_STATUS ath_tx_form_aggr(struct ath_softc *sc, /* link buffers of this frame to the aggregate */ if (!fi->retries) - ath_tx_addto_baw(sc, tid, seqno); + ath_tx_addto_baw(sc, tid, bf->bf_state.seqno); bf->bf_state.ndelim = ndelim; __skb_unlink(skb, &tid->buf_q); @@ -1090,10 +1121,8 @@ static void ath_tx_fill_desc(struct ath_softc *sc, struct ath_buf *bf, struct ath_txq *txq, int len) { struct ath_hw *ah = sc->sc_ah; - struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(bf->bf_mpdu); - struct ath_buf *bf_first = bf; + struct ath_buf *bf_first = NULL; struct ath_tx_info info; - bool aggr = !!(bf->bf_state.bf_type & BUF_AGGR); memset(&info, 0, sizeof(info)); info.is_first = true; @@ -1101,24 +1130,11 @@ static void ath_tx_fill_desc(struct ath_softc *sc, struct ath_buf *bf, info.txpower = MAX_RATE_POWER; info.qcu = txq->axq_qnum; - info.flags = ATH9K_TXDESC_INTREQ; - if (tx_info->flags & IEEE80211_TX_CTL_NO_ACK) - info.flags |= ATH9K_TXDESC_NOACK; - if (tx_info->flags & IEEE80211_TX_CTL_LDPC) - info.flags |= ATH9K_TXDESC_LDPC; - - ath_buf_set_rate(sc, bf, &info, len); - - if (tx_info->flags & IEEE80211_TX_CTL_CLEAR_PS_FILT) - info.flags |= ATH9K_TXDESC_CLRDMASK; - - if (bf->bf_state.bfs_paprd) - info.flags |= (u32) bf->bf_state.bfs_paprd << ATH9K_TXDESC_PAPRD_S; - - while (bf) { struct sk_buff *skb = bf->bf_mpdu; + struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); struct ath_frame_info *fi = get_frame_info(skb); + bool aggr = !!(bf->bf_state.bf_type & BUF_AGGR); info.type = get_hw_packet_type(skb); if (bf->bf_next) @@ -1126,6 +1142,26 @@ static void ath_tx_fill_desc(struct ath_softc *sc, struct ath_buf *bf, else info.link = 0; + if (!bf_first) { + bf_first = bf; + + info.flags = ATH9K_TXDESC_INTREQ; + if ((tx_info->flags & IEEE80211_TX_CTL_CLEAR_PS_FILT) || + txq == sc->tx.uapsdq) + info.flags |= ATH9K_TXDESC_CLRDMASK; + + if (tx_info->flags & IEEE80211_TX_CTL_NO_ACK) + info.flags |= ATH9K_TXDESC_NOACK; + if (tx_info->flags & IEEE80211_TX_CTL_LDPC) + info.flags |= ATH9K_TXDESC_LDPC; + + if (bf->bf_state.bfs_paprd) + info.flags |= (u32) bf->bf_state.bfs_paprd << + ATH9K_TXDESC_PAPRD_S; + + ath_buf_set_rate(sc, bf, &info, len); + } + info.buf_addr[0] = bf->bf_buf_addr; info.buf_len[0] = skb->len; info.pkt_len = fi->framelen; @@ -1135,7 +1171,7 @@ static void ath_tx_fill_desc(struct ath_softc *sc, struct ath_buf *bf, if (aggr) { if (bf == bf_first) info.aggr = AGGR_BUF_FIRST; - else if (!bf->bf_next) + else if (bf == bf_first->bf_lastbf) info.aggr = AGGR_BUF_LAST; else info.aggr = AGGR_BUF_MIDDLE; @@ -1144,6 +1180,9 @@ static void ath_tx_fill_desc(struct ath_softc *sc, struct ath_buf *bf, info.aggr_len = len; } + if (bf == bf_first->bf_lastbf) + bf_first = NULL; + ath9k_hw_set_txdesc(ah, bf->bf_desc, &info); bf = bf->bf_next; } @@ -1328,6 +1367,70 @@ void ath_tx_aggr_resume(struct ath_softc *sc, struct ieee80211_sta *sta, ath_txq_unlock_complete(sc, txq); } +void ath9k_release_buffered_frames(struct ieee80211_hw *hw, + struct ieee80211_sta *sta, + u16 tids, int nframes, + enum ieee80211_frame_release_type reason, + bool more_data) +{ + struct ath_softc *sc = hw->priv; + struct ath_node *an = (struct ath_node *)sta->drv_priv; + struct ath_txq *txq = sc->tx.uapsdq; + struct ieee80211_tx_info *info; + struct list_head bf_q; + struct ath_buf *bf_tail = NULL, *bf; + int sent = 0; + int i; + + INIT_LIST_HEAD(&bf_q); + for (i = 0; tids && nframes; i++, tids >>= 1) { + struct ath_atx_tid *tid; + + if (!(tids & 1)) + continue; + + tid = ATH_AN_2_TID(an, i); + if (tid->paused) + continue; + + ath_txq_lock(sc, tid->ac->txq); + while (!skb_queue_empty(&tid->buf_q) && nframes > 0) { + bf = ath_tx_get_tid_subframe(sc, sc->tx.uapsdq, tid); + if (!bf) + break; + + __skb_unlink(bf->bf_mpdu, &tid->buf_q); + list_add_tail(&bf->list, &bf_q); + ath_set_rates(tid->an->vif, tid->an->sta, bf); + ath_tx_addto_baw(sc, tid, bf->bf_state.seqno); + bf->bf_state.bf_type &= ~BUF_AGGR; + if (bf_tail) + bf_tail->bf_next = bf; + + bf_tail = bf; + nframes--; + sent++; + TX_STAT_INC(txq->axq_qnum, a_queued_hw); + + if (skb_queue_empty(&tid->buf_q)) + ieee80211_sta_set_buffered(an->sta, i, false); + } + ath_txq_unlock_complete(sc, tid->ac->txq); + } + + if (list_empty(&bf_q)) + return; + + info = IEEE80211_SKB_CB(bf_tail->bf_mpdu); + info->flags |= IEEE80211_TX_STATUS_EOSP; + + bf = list_first_entry(&bf_q, struct ath_buf, list); + ath_txq_lock(sc, txq); + ath_tx_fill_desc(sc, bf, txq, 0); + ath_tx_txqaddbuf(sc, txq, &bf_q, false); + ath_txq_unlock(sc, txq); +} + /********************/ /* Queue Management */ /********************/ @@ -1681,8 +1784,9 @@ static void ath_tx_txqaddbuf(struct ath_softc *sc, struct ath_txq *txq, } } -static void ath_tx_send_ampdu(struct ath_softc *sc, struct ath_atx_tid *tid, - struct sk_buff *skb, struct ath_tx_control *txctl) +static void ath_tx_send_ampdu(struct ath_softc *sc, struct ath_txq *txq, + struct ath_atx_tid *tid, struct sk_buff *skb, + struct ath_tx_control *txctl) { struct ath_frame_info *fi = get_frame_info(skb); struct list_head bf_head; @@ -1695,21 +1799,22 @@ static void ath_tx_send_ampdu(struct ath_softc *sc, struct ath_atx_tid *tid, * - seqno is not within block-ack window * - h/w queue depth exceeds low water mark */ - if (!skb_queue_empty(&tid->buf_q) || tid->paused || - !BAW_WITHIN(tid->seq_start, tid->baw_size, tid->seq_next) || - txctl->txq->axq_ampdu_depth >= ATH_AGGR_MIN_QDEPTH) { + if ((!skb_queue_empty(&tid->buf_q) || tid->paused || + !BAW_WITHIN(tid->seq_start, tid->baw_size, tid->seq_next) || + txq->axq_ampdu_depth >= ATH_AGGR_MIN_QDEPTH) && + txq != sc->tx.uapsdq) { /* * Add this frame to software queue for scheduling later * for aggregation. */ - TX_STAT_INC(txctl->txq->axq_qnum, a_queued_sw); + TX_STAT_INC(txq->axq_qnum, a_queued_sw); __skb_queue_tail(&tid->buf_q, skb); if (!txctl->an || !txctl->an->sleeping) - ath_tx_queue_tid(txctl->txq, tid); + ath_tx_queue_tid(txq, tid); return; } - bf = ath_tx_setup_buffer(sc, txctl->txq, tid, skb); + bf = ath_tx_setup_buffer(sc, txq, tid, skb); if (!bf) { ieee80211_free_txskb(sc->hw, skb); return; @@ -1724,10 +1829,10 @@ static void ath_tx_send_ampdu(struct ath_softc *sc, struct ath_atx_tid *tid, ath_tx_addto_baw(sc, tid, bf->bf_state.seqno); /* Queue to h/w without aggregation */ - TX_STAT_INC(txctl->txq->axq_qnum, a_queued_hw); + TX_STAT_INC(txq->axq_qnum, a_queued_hw); bf->bf_lastbf = bf; - ath_tx_fill_desc(sc, bf, txctl->txq, fi->framelen); - ath_tx_txqaddbuf(sc, txctl->txq, &bf_head, false); + ath_tx_fill_desc(sc, bf, txq, fi->framelen); + ath_tx_txqaddbuf(sc, txq, &bf_head, false); } static void ath_tx_send_normal(struct ath_softc *sc, struct ath_txq *txq, @@ -1865,22 +1970,16 @@ static struct ath_buf *ath_tx_setup_buffer(struct ath_softc *sc, return bf; } -/* Upon failure caller should free skb */ -int ath_tx_start(struct ieee80211_hw *hw, struct sk_buff *skb, - struct ath_tx_control *txctl) +static int ath_tx_prepare(struct ieee80211_hw *hw, struct sk_buff *skb, + struct ath_tx_control *txctl) { struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); struct ieee80211_sta *sta = txctl->sta; struct ieee80211_vif *vif = info->control.vif; struct ath_softc *sc = hw->priv; - struct ath_txq *txq = txctl->txq; - struct ath_atx_tid *tid = NULL; - struct ath_buf *bf; - int padpos, padsize; int frmlen = skb->len + FCS_LEN; - u8 tidno; - int q; + int padpos, padsize; /* NOTE: sta can be NULL according to net/mac80211.h */ if (sta) @@ -1901,6 +2000,11 @@ int ath_tx_start(struct ieee80211_hw *hw, struct sk_buff *skb, hdr->seq_ctrl |= cpu_to_le16(sc->tx.seq_no); } + if ((vif && vif->type != NL80211_IFTYPE_AP && + vif->type != NL80211_IFTYPE_AP_VLAN) || + !ieee80211_is_data(hdr->frame_control)) + info->flags |= IEEE80211_TX_CTL_CLEAR_PS_FILT; + /* Add the padding after the header if this is not already done */ padpos = ieee80211_hdrlen(hdr->frame_control); padsize = padpos & 3; @@ -1910,16 +2014,34 @@ int ath_tx_start(struct ieee80211_hw *hw, struct sk_buff *skb, skb_push(skb, padsize); memmove(skb->data, skb->data + padsize, padpos); - hdr = (struct ieee80211_hdr *) skb->data; } - if ((vif && vif->type != NL80211_IFTYPE_AP && - vif->type != NL80211_IFTYPE_AP_VLAN) || - !ieee80211_is_data(hdr->frame_control)) - info->flags |= IEEE80211_TX_CTL_CLEAR_PS_FILT; - setup_frame_info(hw, sta, skb, frmlen); + return 0; +} + +/* Upon failure caller should free skb */ +int ath_tx_start(struct ieee80211_hw *hw, struct sk_buff *skb, + struct ath_tx_control *txctl) +{ + struct ieee80211_hdr *hdr; + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); + struct ieee80211_sta *sta = txctl->sta; + struct ieee80211_vif *vif = info->control.vif; + struct ath_softc *sc = hw->priv; + struct ath_txq *txq = txctl->txq; + struct ath_atx_tid *tid = NULL; + struct ath_buf *bf; + u8 tidno; + int q; + int ret; + + ret = ath_tx_prepare(hw, skb, txctl); + if (ret) + return ret; + + hdr = (struct ieee80211_hdr *) skb->data; /* * At this point, the vif, hw_key and sta pointers in the tx control * info are no longer valid (overwritten by the ath_frame_info data. @@ -1935,6 +2057,12 @@ int ath_tx_start(struct ieee80211_hw *hw, struct sk_buff *skb, txq->stopped = true; } + if (info->flags & IEEE80211_TX_CTL_PS_RESPONSE) { + ath_txq_unlock(sc, txq); + txq = sc->tx.uapsdq; + ath_txq_lock(sc, txq); + } + if (txctl->an && ieee80211_is_data_qos(hdr->frame_control)) { tidno = ieee80211_get_qos_ctl(hdr)[0] & IEEE80211_QOS_CTL_TID_MASK; @@ -1948,11 +2076,11 @@ int ath_tx_start(struct ieee80211_hw *hw, struct sk_buff *skb, * Try aggregation if it's a unicast data frame * and the destination is HT capable. */ - ath_tx_send_ampdu(sc, tid, skb, txctl); + ath_tx_send_ampdu(sc, txq, tid, skb, txctl); goto out; } - bf = ath_tx_setup_buffer(sc, txctl->txq, tid, skb); + bf = ath_tx_setup_buffer(sc, txq, tid, skb); if (!bf) { if (txctl->paprd) dev_kfree_skb_any(skb); @@ -1967,7 +2095,7 @@ int ath_tx_start(struct ieee80211_hw *hw, struct sk_buff *skb, bf->bf_state.bfs_paprd_timestamp = jiffies; ath_set_rates(vif, sta, bf); - ath_tx_send_normal(sc, txctl->txq, tid, skb); + ath_tx_send_normal(sc, txq, tid, skb); out: ath_txq_unlock(sc, txq); @@ -1975,6 +2103,74 @@ out: return 0; } +void ath_tx_cabq(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + struct sk_buff *skb) +{ + struct ath_softc *sc = hw->priv; + struct ath_tx_control txctl = { + .txq = sc->beacon.cabq + }; + struct ath_tx_info info = {}; + struct ieee80211_hdr *hdr; + struct ath_buf *bf_tail = NULL; + struct ath_buf *bf; + LIST_HEAD(bf_q); + int duration = 0; + int max_duration; + + max_duration = + sc->cur_beacon_conf.beacon_interval * 1000 * + sc->cur_beacon_conf.dtim_period / ATH_BCBUF; + + do { + struct ath_frame_info *fi = get_frame_info(skb); + + if (ath_tx_prepare(hw, skb, &txctl)) + break; + + bf = ath_tx_setup_buffer(sc, txctl.txq, NULL, skb); + if (!bf) + break; + + bf->bf_lastbf = bf; + ath_set_rates(vif, NULL, bf); + ath_buf_set_rate(sc, bf, &info, fi->framelen); + duration += info.rates[0].PktDuration; + if (bf_tail) + bf_tail->bf_next = bf; + + list_add_tail(&bf->list, &bf_q); + bf_tail = bf; + skb = NULL; + + if (duration > max_duration) + break; + + skb = ieee80211_get_buffered_bc(hw, vif); + } while(skb); + + if (skb) + ieee80211_free_txskb(hw, skb); + + if (list_empty(&bf_q)) + return; + + bf = list_first_entry(&bf_q, struct ath_buf, list); + hdr = (struct ieee80211_hdr *) bf->bf_mpdu->data; + + if (hdr->frame_control & IEEE80211_FCTL_MOREDATA) { + hdr->frame_control &= ~IEEE80211_FCTL_MOREDATA; + dma_sync_single_for_device(sc->dev, bf->bf_buf_addr, + sizeof(*hdr), DMA_TO_DEVICE); + } + + ath_txq_lock(sc, txctl.txq); + ath_tx_fill_desc(sc, bf, txctl.txq, 0); + ath_tx_txqaddbuf(sc, txctl.txq, &bf_q, false); + TX_STAT_INC(txctl.txq->axq_qnum, queued); + ath_txq_unlock(sc, txctl.txq); +} + /*****************/ /* TX Completion */ /*****************/ @@ -2020,7 +2216,12 @@ static void ath_tx_complete(struct ath_softc *sc, struct sk_buff *skb, } spin_unlock_irqrestore(&sc->sc_pm_lock, flags); + __skb_queue_tail(&txq->complete_q, skb); + q = skb_get_queue_mapping(skb); + if (txq == sc->tx.uapsdq) + txq = sc->tx.txq_map[q]; + if (txq == sc->tx.txq_map[q]) { if (WARN_ON(--txq->pending_frames < 0)) txq->pending_frames = 0; @@ -2031,8 +2232,6 @@ static void ath_tx_complete(struct ath_softc *sc, struct sk_buff *skb, txq->stopped = false; } } - - __skb_queue_tail(&txq->complete_q, skb); } static void ath_tx_complete_buf(struct ath_softc *sc, struct ath_buf *bf, |
