ath9k: more tx setup cleanups
- remove the BUF_HT flag, and instead check for IEEE80211_TX_CTL_AMPDU before calling ath_tx_send_ampdu. - remove a few unused variables - calculate frame length before adding the frame padding - merge the misnamed ath_tx_start_dma function into ath_tx_start - remove an unused argument for assign_aggr_tid_seqno Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Felix Fietkau
John W. Linville
parent
71a3bf3e94
commit
04caf86375
2 changed files with 59 additions and 74 deletions
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@ -86,7 +86,6 @@ struct ath_config {
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/**
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* enum buffer_type - Buffer type flags
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*
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* @BUF_HT: Send this buffer using HT capabilities
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* @BUF_AMPDU: This buffer is an ampdu, as part of an aggregate (during TX)
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* @BUF_AGGR: Indicates whether the buffer can be aggregated
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* (used in aggregation scheduling)
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@ -94,7 +93,6 @@ struct ath_config {
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* @BUF_XRETRY: To denote excessive retries of the buffer
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*/
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enum buffer_type {
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BUF_HT = BIT(1),
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BUF_AMPDU = BIT(2),
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BUF_AGGR = BIT(3),
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BUF_RETRY = BIT(4),
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@ -102,7 +100,6 @@ enum buffer_type {
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};
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#define bf_retries bf_state.bfs_retries
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#define bf_isht(bf) (bf->bf_state.bf_type & BUF_HT)
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#define bf_isampdu(bf) (bf->bf_state.bf_type & BUF_AMPDU)
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#define bf_isaggr(bf) (bf->bf_state.bf_type & BUF_AGGR)
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#define bf_isretried(bf) (bf->bf_state.bf_type & BUF_RETRY)
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@ -265,6 +262,7 @@ struct ath_tx_control {
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struct ath_txq *txq;
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int if_id;
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enum ath9k_internal_frame_type frame_type;
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int frmlen;
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u8 paprd;
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};
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@ -1344,13 +1344,11 @@ static void ath_tx_txqaddbuf(struct ath_softc *sc, struct ath_txq *txq,
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}
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static void ath_tx_send_ampdu(struct ath_softc *sc, struct ath_atx_tid *tid,
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struct list_head *bf_head,
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struct ath_tx_control *txctl, int frmlen)
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struct ath_buf *bf, struct ath_tx_control *txctl)
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{
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struct ath_buf *bf;
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struct list_head bf_head;
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u16 bf_seqno;
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bf = list_first_entry(bf_head, struct ath_buf, list);
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bf->bf_state.bf_type |= BUF_AMPDU;
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TX_STAT_INC(txctl->txq->axq_qnum, a_queued);
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bf_seqno = ath_frame_seqno(bf->bf_mpdu);
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@ -1369,19 +1367,22 @@ static void ath_tx_send_ampdu(struct ath_softc *sc, struct ath_atx_tid *tid,
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* Add this frame to software queue for scheduling later
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* for aggregation.
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*/
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list_move_tail(&bf->list, &tid->buf_q);
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list_add_tail(&bf->list, &tid->buf_q);
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ath_tx_queue_tid(txctl->txq, tid);
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return;
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}
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INIT_LIST_HEAD(&bf_head);
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list_add(&bf->list, &bf_head);
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/* Add sub-frame to BAW */
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if (!bf_isretried(bf))
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ath_tx_addto_baw(sc, tid, bf_seqno);
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/* Queue to h/w without aggregation */
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bf->bf_lastbf = bf;
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ath_buf_set_rate(sc, bf, frmlen);
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ath_tx_txqaddbuf(sc, txctl->txq, bf_head);
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ath_buf_set_rate(sc, bf, txctl->frmlen);
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ath_tx_txqaddbuf(sc, txctl->txq, &bf_head);
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}
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static void ath_tx_send_normal(struct ath_softc *sc, struct ath_txq *txq,
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@ -1426,8 +1427,7 @@ static enum ath9k_pkt_type get_hw_packet_type(struct sk_buff *skb)
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return htype;
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}
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static void assign_aggr_tid_seqno(struct sk_buff *skb,
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struct ath_buf *bf)
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static void assign_aggr_tid_seqno(struct sk_buff *skb)
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{
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struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
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struct ieee80211_hdr *hdr;
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@ -1608,15 +1608,20 @@ static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf, int len)
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}
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static struct ath_buf *ath_tx_setup_buffer(struct ieee80211_hw *hw,
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struct sk_buff *skb)
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struct ath_txq *txq,
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struct sk_buff *skb, int frmlen)
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{
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struct ath_wiphy *aphy = hw->priv;
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struct ath_softc *sc = aphy->sc;
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struct ath_hw *ah = sc->sc_ah;
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struct ath_common *common = ath9k_hw_common(sc->sc_ah);
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struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
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struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
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struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb;
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struct ath_buf *bf;
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int hdrlen;
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__le16 fc;
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struct ath_desc *ds;
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enum ath9k_key_type keytype;
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u32 keyix;
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int frm_type;
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bf = ath_tx_get_buffer(sc);
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if (!bf) {
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@ -1624,21 +1629,14 @@ static struct ath_buf *ath_tx_setup_buffer(struct ieee80211_hw *hw,
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return NULL;
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}
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hdrlen = ieee80211_get_hdrlen_from_skb(skb);
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fc = hdr->frame_control;
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ATH_TXBUF_RESET(bf);
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if (ieee80211_is_data_qos(hdr->frame_control) &&
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conf_is_ht(&hw->conf) && (sc->sc_flags & SC_OP_TXAGGR))
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assign_aggr_tid_seqno(skb);
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bf->aphy = aphy;
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if (ieee80211_is_data_qos(fc) && conf_is_ht(&hw->conf)) {
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bf->bf_state.bf_type |= BUF_HT;
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if (sc->sc_flags & SC_OP_TXAGGR)
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assign_aggr_tid_seqno(skb, bf);
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}
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bf->bf_flags = setup_tx_flags(skb);
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bf->bf_mpdu = skb;
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bf->bf_buf_addr = dma_map_single(sc->dev, skb->data,
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@ -1652,33 +1650,7 @@ static struct ath_buf *ath_tx_setup_buffer(struct ieee80211_hw *hw,
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return NULL;
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}
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return bf;
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}
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/* FIXME: tx power */
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static void ath_tx_start_dma(struct ath_softc *sc, struct ath_buf *bf,
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struct ath_tx_control *txctl)
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{
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struct sk_buff *skb = bf->bf_mpdu;
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struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
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struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
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struct ath_node *an = NULL;
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struct list_head bf_head;
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struct ath_desc *ds;
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struct ath_atx_tid *tid;
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struct ath_hw *ah = sc->sc_ah;
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enum ath9k_key_type keytype;
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u32 keyix;
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int frm_type;
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__le16 fc;
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u8 tidno;
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int frmlen;
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frm_type = get_hw_packet_type(skb);
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fc = hdr->frame_control;
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INIT_LIST_HEAD(&bf_head);
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list_add_tail(&bf->list, &bf_head);
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ds = bf->bf_desc;
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ath9k_hw_set_desc_link(ah, ds, 0);
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@ -1689,7 +1661,6 @@ static void ath_tx_start_dma(struct ath_softc *sc, struct ath_buf *bf,
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else
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keyix = ATH9K_TXKEYIX_INVALID;
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frmlen = ath_frame_len(bf->bf_mpdu);
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ath9k_hw_set11n_txdesc(ah, ds, frmlen, frm_type, MAX_RATE_POWER,
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keyix, keytype, bf->bf_flags);
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@ -1699,40 +1670,50 @@ static void ath_tx_start_dma(struct ath_softc *sc, struct ath_buf *bf,
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true, /* last segment */
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ds, /* first descriptor */
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bf->bf_buf_addr,
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txctl->txq->axq_qnum);
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txq->axq_qnum);
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return bf;
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}
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/* FIXME: tx power */
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static void ath_tx_start_dma(struct ath_softc *sc, struct ath_buf *bf,
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struct ath_tx_control *txctl)
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{
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struct sk_buff *skb = bf->bf_mpdu;
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struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
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struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
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struct ath_node *an = NULL;
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struct list_head bf_head;
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struct ath_atx_tid *tid;
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u8 tidno;
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spin_lock_bh(&txctl->txq->axq_lock);
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if (bf_isht(bf) && (sc->sc_flags & SC_OP_TXAGGR) &&
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tx_info->control.sta) {
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if ((tx_info->flags & IEEE80211_TX_CTL_AMPDU) && tx_info->control.sta) {
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an = (struct ath_node *)tx_info->control.sta->drv_priv;
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tidno = ieee80211_get_qos_ctl(hdr)[0] &
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IEEE80211_QOS_CTL_TID_MASK;
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tid = ATH_AN_2_TID(an, tidno);
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WARN_ON(tid->ac->txq != txctl->txq);
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if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) {
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/*
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* Try aggregation if it's a unicast data frame
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* and the destination is HT capable.
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*/
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ath_tx_send_ampdu(sc, tid, &bf_head, txctl, frmlen);
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} else {
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/*
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* Send this frame as regular when ADDBA
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* exchange is neither complete nor pending.
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*/
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ath_tx_send_normal(sc, txctl->txq, tid, &bf_head, frmlen);
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}
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/*
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* Try aggregation if it's a unicast data frame
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* and the destination is HT capable.
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*/
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ath_tx_send_ampdu(sc, tid, bf, txctl);
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} else {
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INIT_LIST_HEAD(&bf_head);
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list_add_tail(&bf->list, &bf_head);
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bf->bf_state.bfs_ftype = txctl->frame_type;
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bf->bf_state.bfs_paprd = txctl->paprd;
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if (bf->bf_state.bfs_paprd)
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ar9003_hw_set_paprd_txdesc(ah, ds, bf->bf_state.bfs_paprd);
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ar9003_hw_set_paprd_txdesc(sc->sc_ah, bf->bf_desc,
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bf->bf_state.bfs_paprd);
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ath_tx_send_normal(sc, txctl->txq, NULL, &bf_head, frmlen);
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ath_tx_send_normal(sc, txctl->txq, NULL, &bf_head, txctl->frmlen);
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}
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spin_unlock_bh(&txctl->txq->axq_lock);
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@ -1749,8 +1730,14 @@ int ath_tx_start(struct ieee80211_hw *hw, struct sk_buff *skb,
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struct ath_txq *txq = txctl->txq;
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struct ath_buf *bf;
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int padpos, padsize;
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int frmlen = skb->len + FCS_LEN;
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int q;
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if (info->control.hw_key)
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frmlen += info->control.hw_key->icv_len;
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txctl->frmlen = frmlen;
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/*
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* As a temporary workaround, assign seq# here; this will likely need
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* to be cleaned up to work better with Beacon transmission and virtual
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@ -1774,7 +1761,7 @@ int ath_tx_start(struct ieee80211_hw *hw, struct sk_buff *skb,
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memmove(skb->data, skb->data + padsize, padpos);
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}
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bf = ath_tx_setup_buffer(hw, skb);
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bf = ath_tx_setup_buffer(hw, txctl->txq, skb, frmlen);
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if (unlikely(!bf))
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return -ENOMEM;
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