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path: root/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c
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Diffstat (limited to 'drivers/net/wireless/ath/ath9k/htc_drv_txrx.c')
-rw-r--r--drivers/net/wireless/ath/ath9k/htc_drv_txrx.c778
1 files changed, 621 insertions, 157 deletions
diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c b/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c
index 4a4f27ba96af..a898dac22337 100644
--- a/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c
+++ b/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c
@@ -53,6 +53,138 @@ int get_hw_qnum(u16 queue, int *hwq_map)
}
}
+void ath9k_htc_check_stop_queues(struct ath9k_htc_priv *priv)
+{
+ spin_lock_bh(&priv->tx.tx_lock);
+ priv->tx.queued_cnt++;
+ if ((priv->tx.queued_cnt >= ATH9K_HTC_TX_THRESHOLD) &&
+ !(priv->tx.flags & ATH9K_HTC_OP_TX_QUEUES_STOP)) {
+ priv->tx.flags |= ATH9K_HTC_OP_TX_QUEUES_STOP;
+ ieee80211_stop_queues(priv->hw);
+ }
+ spin_unlock_bh(&priv->tx.tx_lock);
+}
+
+void ath9k_htc_check_wake_queues(struct ath9k_htc_priv *priv)
+{
+ spin_lock_bh(&priv->tx.tx_lock);
+ if ((priv->tx.queued_cnt < ATH9K_HTC_TX_THRESHOLD) &&
+ (priv->tx.flags & ATH9K_HTC_OP_TX_QUEUES_STOP)) {
+ priv->tx.flags &= ~ATH9K_HTC_OP_TX_QUEUES_STOP;
+ ieee80211_wake_queues(priv->hw);
+ }
+ spin_unlock_bh(&priv->tx.tx_lock);
+}
+
+int ath9k_htc_tx_get_slot(struct ath9k_htc_priv *priv)
+{
+ int slot;
+
+ spin_lock_bh(&priv->tx.tx_lock);
+ slot = find_first_zero_bit(priv->tx.tx_slot, MAX_TX_BUF_NUM);
+ if (slot >= MAX_TX_BUF_NUM) {
+ spin_unlock_bh(&priv->tx.tx_lock);
+ return -ENOBUFS;
+ }
+ __set_bit(slot, priv->tx.tx_slot);
+ spin_unlock_bh(&priv->tx.tx_lock);
+
+ return slot;
+}
+
+void ath9k_htc_tx_clear_slot(struct ath9k_htc_priv *priv, int slot)
+{
+ spin_lock_bh(&priv->tx.tx_lock);
+ __clear_bit(slot, priv->tx.tx_slot);
+ spin_unlock_bh(&priv->tx.tx_lock);
+}
+
+static inline enum htc_endpoint_id get_htc_epid(struct ath9k_htc_priv *priv,
+ u16 qnum)
+{
+ enum htc_endpoint_id epid;
+
+ switch (qnum) {
+ case 0:
+ TX_QSTAT_INC(WME_AC_VO);
+ epid = priv->data_vo_ep;
+ break;
+ case 1:
+ TX_QSTAT_INC(WME_AC_VI);
+ epid = priv->data_vi_ep;
+ break;
+ case 2:
+ TX_QSTAT_INC(WME_AC_BE);
+ epid = priv->data_be_ep;
+ break;
+ case 3:
+ default:
+ TX_QSTAT_INC(WME_AC_BK);
+ epid = priv->data_bk_ep;
+ break;
+ }
+
+ return epid;
+}
+
+static inline struct sk_buff_head*
+get_htc_epid_queue(struct ath9k_htc_priv *priv, u8 epid)
+{
+ struct ath_common *common = ath9k_hw_common(priv->ah);
+ struct sk_buff_head *epid_queue = NULL;
+
+ if (epid == priv->mgmt_ep)
+ epid_queue = &priv->tx.mgmt_ep_queue;
+ else if (epid == priv->cab_ep)
+ epid_queue = &priv->tx.cab_ep_queue;
+ else if (epid == priv->data_be_ep)
+ epid_queue = &priv->tx.data_be_queue;
+ else if (epid == priv->data_bk_ep)
+ epid_queue = &priv->tx.data_bk_queue;
+ else if (epid == priv->data_vi_ep)
+ epid_queue = &priv->tx.data_vi_queue;
+ else if (epid == priv->data_vo_ep)
+ epid_queue = &priv->tx.data_vo_queue;
+ else
+ ath_err(common, "Invalid EPID: %d\n", epid);
+
+ return epid_queue;
+}
+
+/*
+ * Removes the driver header and returns the TX slot number
+ */
+static inline int strip_drv_header(struct ath9k_htc_priv *priv,
+ struct sk_buff *skb)
+{
+ struct ath_common *common = ath9k_hw_common(priv->ah);
+ struct ath9k_htc_tx_ctl *tx_ctl;
+ int slot;
+
+ tx_ctl = HTC_SKB_CB(skb);
+
+ if (tx_ctl->epid == priv->mgmt_ep) {
+ struct tx_mgmt_hdr *tx_mhdr =
+ (struct tx_mgmt_hdr *)skb->data;
+ slot = tx_mhdr->cookie;
+ skb_pull(skb, sizeof(struct tx_mgmt_hdr));
+ } else if ((tx_ctl->epid == priv->data_bk_ep) ||
+ (tx_ctl->epid == priv->data_be_ep) ||
+ (tx_ctl->epid == priv->data_vi_ep) ||
+ (tx_ctl->epid == priv->data_vo_ep) ||
+ (tx_ctl->epid == priv->cab_ep)) {
+ struct tx_frame_hdr *tx_fhdr =
+ (struct tx_frame_hdr *)skb->data;
+ slot = tx_fhdr->cookie;
+ skb_pull(skb, sizeof(struct tx_frame_hdr));
+ } else {
+ ath_err(common, "Unsupported EPID: %d\n", tx_ctl->epid);
+ slot = -EINVAL;
+ }
+
+ return slot;
+}
+
int ath_htc_txq_update(struct ath9k_htc_priv *priv, int qnum,
struct ath9k_tx_queue_info *qinfo)
{
@@ -79,23 +211,140 @@ int ath_htc_txq_update(struct ath9k_htc_priv *priv, int qnum,
return error;
}
-int ath9k_htc_tx_start(struct ath9k_htc_priv *priv, struct sk_buff *skb)
+static void ath9k_htc_tx_mgmt(struct ath9k_htc_priv *priv,
+ struct ath9k_htc_vif *avp,
+ struct sk_buff *skb,
+ u8 sta_idx, u8 vif_idx, u8 slot)
+{
+ struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
+ struct ieee80211_mgmt *mgmt;
+ struct ieee80211_hdr *hdr;
+ struct tx_mgmt_hdr mgmt_hdr;
+ struct ath9k_htc_tx_ctl *tx_ctl;
+ u8 *tx_fhdr;
+
+ tx_ctl = HTC_SKB_CB(skb);
+ hdr = (struct ieee80211_hdr *) skb->data;
+
+ memset(tx_ctl, 0, sizeof(*tx_ctl));
+ memset(&mgmt_hdr, 0, sizeof(struct tx_mgmt_hdr));
+
+ /*
+ * Set the TSF adjust value for probe response
+ * frame also.
+ */
+ if (avp && unlikely(ieee80211_is_probe_resp(hdr->frame_control))) {
+ mgmt = (struct ieee80211_mgmt *)skb->data;
+ mgmt->u.probe_resp.timestamp = avp->tsfadjust;
+ }
+
+ tx_ctl->type = ATH9K_HTC_MGMT;
+
+ mgmt_hdr.node_idx = sta_idx;
+ mgmt_hdr.vif_idx = vif_idx;
+ mgmt_hdr.tidno = 0;
+ mgmt_hdr.flags = 0;
+ mgmt_hdr.cookie = slot;
+
+ mgmt_hdr.key_type = ath9k_cmn_get_hw_crypto_keytype(skb);
+ if (mgmt_hdr.key_type == ATH9K_KEY_TYPE_CLEAR)
+ mgmt_hdr.keyix = (u8) ATH9K_TXKEYIX_INVALID;
+ else
+ mgmt_hdr.keyix = tx_info->control.hw_key->hw_key_idx;
+
+ tx_fhdr = skb_push(skb, sizeof(mgmt_hdr));
+ memcpy(tx_fhdr, (u8 *) &mgmt_hdr, sizeof(mgmt_hdr));
+ tx_ctl->epid = priv->mgmt_ep;
+}
+
+static void ath9k_htc_tx_data(struct ath9k_htc_priv *priv,
+ struct ieee80211_vif *vif,
+ struct sk_buff *skb,
+ u8 sta_idx, u8 vif_idx, u8 slot,
+ bool is_cab)
+{
+ struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
+ struct ieee80211_hdr *hdr;
+ struct ath9k_htc_tx_ctl *tx_ctl;
+ struct tx_frame_hdr tx_hdr;
+ u32 flags = 0;
+ u8 *qc, *tx_fhdr;
+ u16 qnum;
+
+ tx_ctl = HTC_SKB_CB(skb);
+ hdr = (struct ieee80211_hdr *) skb->data;
+
+ memset(tx_ctl, 0, sizeof(*tx_ctl));
+ memset(&tx_hdr, 0, sizeof(struct tx_frame_hdr));
+
+ tx_hdr.node_idx = sta_idx;
+ tx_hdr.vif_idx = vif_idx;
+ tx_hdr.cookie = slot;
+
+ /*
+ * This is a bit redundant but it helps to get
+ * the per-packet index quickly when draining the
+ * TX queue in the HIF layer. Otherwise we would
+ * have to parse the packet contents ...
+ */
+ tx_ctl->sta_idx = sta_idx;
+
+ if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) {
+ tx_ctl->type = ATH9K_HTC_AMPDU;
+ tx_hdr.data_type = ATH9K_HTC_AMPDU;
+ } else {
+ tx_ctl->type = ATH9K_HTC_NORMAL;
+ tx_hdr.data_type = ATH9K_HTC_NORMAL;
+ }
+
+ if (ieee80211_is_data_qos(hdr->frame_control)) {
+ qc = ieee80211_get_qos_ctl(hdr);
+ tx_hdr.tidno = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
+ }
+
+ /* Check for RTS protection */
+ if (priv->hw->wiphy->rts_threshold != (u32) -1)
+ if (skb->len > priv->hw->wiphy->rts_threshold)
+ flags |= ATH9K_HTC_TX_RTSCTS;
+
+ /* CTS-to-self */
+ if (!(flags & ATH9K_HTC_TX_RTSCTS) &&
+ (vif && vif->bss_conf.use_cts_prot))
+ flags |= ATH9K_HTC_TX_CTSONLY;
+
+ tx_hdr.flags = cpu_to_be32(flags);
+ tx_hdr.key_type = ath9k_cmn_get_hw_crypto_keytype(skb);
+ if (tx_hdr.key_type == ATH9K_KEY_TYPE_CLEAR)
+ tx_hdr.keyix = (u8) ATH9K_TXKEYIX_INVALID;
+ else
+ tx_hdr.keyix = tx_info->control.hw_key->hw_key_idx;
+
+ tx_fhdr = skb_push(skb, sizeof(tx_hdr));
+ memcpy(tx_fhdr, (u8 *) &tx_hdr, sizeof(tx_hdr));
+
+ if (is_cab) {
+ CAB_STAT_INC;
+ tx_ctl->epid = priv->cab_ep;
+ return;
+ }
+
+ qnum = skb_get_queue_mapping(skb);
+ tx_ctl->epid = get_htc_epid(priv, qnum);
+}
+
+int ath9k_htc_tx_start(struct ath9k_htc_priv *priv,
+ struct sk_buff *skb,
+ u8 slot, bool is_cab)
{
struct ieee80211_hdr *hdr;
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
struct ieee80211_sta *sta = tx_info->control.sta;
struct ieee80211_vif *vif = tx_info->control.vif;
struct ath9k_htc_sta *ista;
- struct ath9k_htc_vif *avp;
- struct ath9k_htc_tx_ctl tx_ctl;
- enum htc_endpoint_id epid;
- u16 qnum;
- __le16 fc;
- u8 *tx_fhdr;
+ struct ath9k_htc_vif *avp = NULL;
u8 sta_idx, vif_idx;
hdr = (struct ieee80211_hdr *) skb->data;
- fc = hdr->frame_control;
/*
* Find out on which interface this packet has to be
@@ -124,218 +373,430 @@ int ath9k_htc_tx_start(struct ath9k_htc_priv *priv, struct sk_buff *skb)
sta_idx = priv->vif_sta_pos[vif_idx];
}
- memset(&tx_ctl, 0, sizeof(struct ath9k_htc_tx_ctl));
+ if (ieee80211_is_data(hdr->frame_control))
+ ath9k_htc_tx_data(priv, vif, skb,
+ sta_idx, vif_idx, slot, is_cab);
+ else
+ ath9k_htc_tx_mgmt(priv, avp, skb,
+ sta_idx, vif_idx, slot);
- if (ieee80211_is_data(fc)) {
- struct tx_frame_hdr tx_hdr;
- u32 flags = 0;
- u8 *qc;
- memset(&tx_hdr, 0, sizeof(struct tx_frame_hdr));
+ return htc_send(priv->htc, skb);
+}
- tx_hdr.node_idx = sta_idx;
- tx_hdr.vif_idx = vif_idx;
+static inline bool __ath9k_htc_check_tx_aggr(struct ath9k_htc_priv *priv,
+ struct ath9k_htc_sta *ista, u8 tid)
+{
+ bool ret = false;
- if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) {
- tx_ctl.type = ATH9K_HTC_AMPDU;
- tx_hdr.data_type = ATH9K_HTC_AMPDU;
- } else {
- tx_ctl.type = ATH9K_HTC_NORMAL;
- tx_hdr.data_type = ATH9K_HTC_NORMAL;
- }
+ spin_lock_bh(&priv->tx.tx_lock);
+ if ((tid < ATH9K_HTC_MAX_TID) && (ista->tid_state[tid] == AGGR_STOP))
+ ret = true;
+ spin_unlock_bh(&priv->tx.tx_lock);
+
+ return ret;
+}
+
+static void ath9k_htc_check_tx_aggr(struct ath9k_htc_priv *priv,
+ struct ieee80211_vif *vif,
+ struct sk_buff *skb)
+{
+ struct ieee80211_sta *sta;
+ struct ieee80211_hdr *hdr;
+ __le16 fc;
+
+ hdr = (struct ieee80211_hdr *) skb->data;
+ fc = hdr->frame_control;
+
+ rcu_read_lock();
+
+ sta = ieee80211_find_sta(vif, hdr->addr1);
+ if (!sta) {
+ rcu_read_unlock();
+ return;
+ }
+ if (sta && conf_is_ht(&priv->hw->conf) &&
+ !(skb->protocol == cpu_to_be16(ETH_P_PAE))) {
if (ieee80211_is_data_qos(fc)) {
+ u8 *qc, tid;
+ struct ath9k_htc_sta *ista;
+
qc = ieee80211_get_qos_ctl(hdr);
- tx_hdr.tidno = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
+ tid = qc[0] & 0xf;
+ ista = (struct ath9k_htc_sta *)sta->drv_priv;
+ if (__ath9k_htc_check_tx_aggr(priv, ista, tid)) {
+ ieee80211_start_tx_ba_session(sta, tid, 0);
+ spin_lock_bh(&priv->tx.tx_lock);
+ ista->tid_state[tid] = AGGR_PROGRESS;
+ spin_unlock_bh(&priv->tx.tx_lock);
+ }
}
+ }
- /* Check for RTS protection */
- if (priv->hw->wiphy->rts_threshold != (u32) -1)
- if (skb->len > priv->hw->wiphy->rts_threshold)
- flags |= ATH9K_HTC_TX_RTSCTS;
+ rcu_read_unlock();
+}
- /* CTS-to-self */
- if (!(flags & ATH9K_HTC_TX_RTSCTS) &&
- (vif && vif->bss_conf.use_cts_prot))
- flags |= ATH9K_HTC_TX_CTSONLY;
+static void ath9k_htc_tx_process(struct ath9k_htc_priv *priv,
+ struct sk_buff *skb,
+ struct __wmi_event_txstatus *txs)
+{
+ struct ieee80211_vif *vif;
+ struct ath9k_htc_tx_ctl *tx_ctl;
+ struct ieee80211_tx_info *tx_info;
+ struct ieee80211_tx_rate *rate;
+ struct ieee80211_conf *cur_conf = &priv->hw->conf;
+ bool txok;
+ int slot;
- tx_hdr.flags = cpu_to_be32(flags);
- tx_hdr.key_type = ath9k_cmn_get_hw_crypto_keytype(skb);
- if (tx_hdr.key_type == ATH9K_KEY_TYPE_CLEAR)
- tx_hdr.keyix = (u8) ATH9K_TXKEYIX_INVALID;
- else
- tx_hdr.keyix = tx_info->control.hw_key->hw_key_idx;
+ slot = strip_drv_header(priv, skb);
+ if (slot < 0) {
+ dev_kfree_skb_any(skb);
+ return;
+ }
- tx_fhdr = skb_push(skb, sizeof(tx_hdr));
- memcpy(tx_fhdr, (u8 *) &tx_hdr, sizeof(tx_hdr));
+ tx_ctl = HTC_SKB_CB(skb);
+ txok = tx_ctl->txok;
+ tx_info = IEEE80211_SKB_CB(skb);
+ vif = tx_info->control.vif;
+ rate = &tx_info->status.rates[0];
- qnum = skb_get_queue_mapping(skb);
+ memset(&tx_info->status, 0, sizeof(tx_info->status));
- switch (qnum) {
- case 0:
- TX_QSTAT_INC(WME_AC_VO);
- epid = priv->data_vo_ep;
- break;
- case 1:
- TX_QSTAT_INC(WME_AC_VI);
- epid = priv->data_vi_ep;
- break;
- case 2:
- TX_QSTAT_INC(WME_AC_BE);
- epid = priv->data_be_ep;
- break;
- case 3:
- default:
- TX_QSTAT_INC(WME_AC_BK);
- epid = priv->data_bk_ep;
- break;
- }
- } else {
- struct tx_mgmt_hdr mgmt_hdr;
+ /*
+ * URB submission failed for this frame, it never reached
+ * the target.
+ */
+ if (!txok || !vif || !txs)
+ goto send_mac80211;
+
+ if (txs->ts_flags & ATH9K_HTC_TXSTAT_ACK)
+ tx_info->flags |= IEEE80211_TX_STAT_ACK;
- memset(&mgmt_hdr, 0, sizeof(struct tx_mgmt_hdr));
+ if (txs->ts_flags & ATH9K_HTC_TXSTAT_FILT)
+ tx_info->flags |= IEEE80211_TX_STAT_TX_FILTERED;
- tx_ctl.type = ATH9K_HTC_NORMAL;
+ if (txs->ts_flags & ATH9K_HTC_TXSTAT_RTC_CTS)
+ rate->flags |= IEEE80211_TX_RC_USE_RTS_CTS;
- mgmt_hdr.node_idx = sta_idx;
- mgmt_hdr.vif_idx = vif_idx;
- mgmt_hdr.tidno = 0;
- mgmt_hdr.flags = 0;
+ rate->count = 1;
+ rate->idx = MS(txs->ts_rate, ATH9K_HTC_TXSTAT_RATE);
- mgmt_hdr.key_type = ath9k_cmn_get_hw_crypto_keytype(skb);
- if (mgmt_hdr.key_type == ATH9K_KEY_TYPE_CLEAR)
- mgmt_hdr.keyix = (u8) ATH9K_TXKEYIX_INVALID;
- else
- mgmt_hdr.keyix = tx_info->control.hw_key->hw_key_idx;
+ if (txs->ts_flags & ATH9K_HTC_TXSTAT_MCS) {
+ rate->flags |= IEEE80211_TX_RC_MCS;
- tx_fhdr = skb_push(skb, sizeof(mgmt_hdr));
- memcpy(tx_fhdr, (u8 *) &mgmt_hdr, sizeof(mgmt_hdr));
- epid = priv->mgmt_ep;
+ if (txs->ts_flags & ATH9K_HTC_TXSTAT_CW40)
+ rate->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
+ if (txs->ts_flags & ATH9K_HTC_TXSTAT_SGI)
+ rate->flags |= IEEE80211_TX_RC_SHORT_GI;
+ } else {
+ if (cur_conf->channel->band == IEEE80211_BAND_5GHZ)
+ rate->idx += 4; /* No CCK rates */
}
- return htc_send(priv->htc, skb, epid, &tx_ctl);
+ ath9k_htc_check_tx_aggr(priv, vif, skb);
+
+send_mac80211:
+ spin_lock_bh(&priv->tx.tx_lock);
+ if (WARN_ON(--priv->tx.queued_cnt < 0))
+ priv->tx.queued_cnt = 0;
+ spin_unlock_bh(&priv->tx.tx_lock);
+
+ ath9k_htc_tx_clear_slot(priv, slot);
+
+ /* Send status to mac80211 */
+ ieee80211_tx_status(priv->hw, skb);
}
-static bool ath9k_htc_check_tx_aggr(struct ath9k_htc_priv *priv,
- struct ath9k_htc_sta *ista, u8 tid)
+static inline void ath9k_htc_tx_drainq(struct ath9k_htc_priv *priv,
+ struct sk_buff_head *queue)
{
- bool ret = false;
+ struct sk_buff *skb;
- spin_lock_bh(&priv->tx_lock);
- if ((tid < ATH9K_HTC_MAX_TID) && (ista->tid_state[tid] == AGGR_STOP))
- ret = true;
- spin_unlock_bh(&priv->tx_lock);
+ while ((skb = skb_dequeue(queue)) != NULL) {
+ ath9k_htc_tx_process(priv, skb, NULL);
+ }
+}
- return ret;
+void ath9k_htc_tx_drain(struct ath9k_htc_priv *priv)
+{
+ struct ath9k_htc_tx_event *event, *tmp;
+
+ spin_lock_bh(&priv->tx.tx_lock);
+ priv->tx.flags |= ATH9K_HTC_OP_TX_DRAIN;
+ spin_unlock_bh(&priv->tx.tx_lock);
+
+ /*
+ * Ensure that all pending TX frames are flushed,
+ * and that the TX completion/failed tasklets is killed.
+ */
+ htc_stop(priv->htc);
+ tasklet_kill(&priv->wmi->wmi_event_tasklet);
+ tasklet_kill(&priv->tx_failed_tasklet);
+
+ ath9k_htc_tx_drainq(priv, &priv->tx.mgmt_ep_queue);
+ ath9k_htc_tx_drainq(priv, &priv->tx.cab_ep_queue);
+ ath9k_htc_tx_drainq(priv, &priv->tx.data_be_queue);
+ ath9k_htc_tx_drainq(priv, &priv->tx.data_bk_queue);
+ ath9k_htc_tx_drainq(priv, &priv->tx.data_vi_queue);
+ ath9k_htc_tx_drainq(priv, &priv->tx.data_vo_queue);
+ ath9k_htc_tx_drainq(priv, &priv->tx.tx_failed);
+
+ /*
+ * The TX cleanup timer has already been killed.
+ */
+ spin_lock_bh(&priv->wmi->event_lock);
+ list_for_each_entry_safe(event, tmp, &priv->wmi->pending_tx_events, list) {
+ list_del(&event->list);
+ kfree(event);
+ }
+ spin_unlock_bh(&priv->wmi->event_lock);
+
+ spin_lock_bh(&priv->tx.tx_lock);
+ priv->tx.flags &= ~ATH9K_HTC_OP_TX_DRAIN;
+ spin_unlock_bh(&priv->tx.tx_lock);
}
-void ath9k_tx_tasklet(unsigned long data)
+void ath9k_tx_failed_tasklet(unsigned long data)
{
struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *)data;
- struct ieee80211_vif *vif;
- struct ieee80211_sta *sta;
- struct ieee80211_hdr *hdr;
- struct ieee80211_tx_info *tx_info;
- struct sk_buff *skb = NULL;
- __le16 fc;
- while ((skb = skb_dequeue(&priv->tx_queue)) != NULL) {
+ spin_lock_bh(&priv->tx.tx_lock);
+ if (priv->tx.flags & ATH9K_HTC_OP_TX_DRAIN) {
+ spin_unlock_bh(&priv->tx.tx_lock);
+ return;
+ }
+ spin_unlock_bh(&priv->tx.tx_lock);
- hdr = (struct ieee80211_hdr *) skb->data;
- fc = hdr->frame_control;
- tx_info = IEEE80211_SKB_CB(skb);
- vif = tx_info->control.vif;
+ ath9k_htc_tx_drainq(priv, &priv->tx.tx_failed);
+}
- memset(&tx_info->status, 0, sizeof(tx_info->status));
+static inline bool check_cookie(struct ath9k_htc_priv *priv,
+ struct sk_buff *skb,
+ u8 cookie, u8 epid)
+{
+ u8 fcookie = 0;
+
+ if (epid == priv->mgmt_ep) {
+ struct tx_mgmt_hdr *hdr;
+ hdr = (struct tx_mgmt_hdr *) skb->data;
+ fcookie = hdr->cookie;
+ } else if ((epid == priv->data_bk_ep) ||
+ (epid == priv->data_be_ep) ||
+ (epid == priv->data_vi_ep) ||
+ (epid == priv->data_vo_ep) ||
+ (epid == priv->cab_ep)) {
+ struct tx_frame_hdr *hdr;
+ hdr = (struct tx_frame_hdr *) skb->data;
+ fcookie = hdr->cookie;
+ }
- if (!vif)
- goto send_mac80211;
+ if (fcookie == cookie)
+ return true;
- rcu_read_lock();
+ return false;
+}
- sta = ieee80211_find_sta(vif, hdr->addr1);
- if (!sta) {
- rcu_read_unlock();
- ieee80211_tx_status(priv->hw, skb);
- continue;
+static struct sk_buff* ath9k_htc_tx_get_packet(struct ath9k_htc_priv *priv,
+ struct __wmi_event_txstatus *txs)
+{
+ struct ath_common *common = ath9k_hw_common(priv->ah);
+ struct sk_buff_head *epid_queue;
+ struct sk_buff *skb, *tmp;
+ unsigned long flags;
+ u8 epid = MS(txs->ts_rate, ATH9K_HTC_TXSTAT_EPID);
+
+ epid_queue = get_htc_epid_queue(priv, epid);
+ if (!epid_queue)
+ return NULL;
+
+ spin_lock_irqsave(&epid_queue->lock, flags);
+ skb_queue_walk_safe(epid_queue, skb, tmp) {
+ if (check_cookie(priv, skb, txs->cookie, epid)) {
+ __skb_unlink(skb, epid_queue);
+ spin_unlock_irqrestore(&epid_queue->lock, flags);
+ return skb;
}
+ }
+ spin_unlock_irqrestore(&epid_queue->lock, flags);
+
+ ath_dbg(common, ATH_DBG_XMIT,
+ "No matching packet for cookie: %d, epid: %d\n",
+ txs->cookie, epid);
- /* Check if we need to start aggregation */
+ return NULL;
+}
- if (sta && conf_is_ht(&priv->hw->conf) &&
- !(skb->protocol == cpu_to_be16(ETH_P_PAE))) {
- if (ieee80211_is_data_qos(fc)) {
- u8 *qc, tid;
- struct ath9k_htc_sta *ista;
+void ath9k_htc_txstatus(struct ath9k_htc_priv *priv, void *wmi_event)
+{
+ struct wmi_event_txstatus *txs = (struct wmi_event_txstatus *)wmi_event;
+ struct __wmi_event_txstatus *__txs;
+ struct sk_buff *skb;
+ struct ath9k_htc_tx_event *tx_pend;
+ int i;
- qc = ieee80211_get_qos_ctl(hdr);
- tid = qc[0] & 0xf;
- ista = (struct ath9k_htc_sta *)sta->drv_priv;
+ for (i = 0; i < txs->cnt; i++) {
+ WARN_ON(txs->cnt > HTC_MAX_TX_STATUS);
- if (ath9k_htc_check_tx_aggr(priv, ista, tid)) {
- ieee80211_start_tx_ba_session(sta, tid, 0);
- spin_lock_bh(&priv->tx_lock);
- ista->tid_state[tid] = AGGR_PROGRESS;
- spin_unlock_bh(&priv->tx_lock);
- }
- }
- }
+ __txs = &txs->txstatus[i];
- rcu_read_unlock();
+ skb = ath9k_htc_tx_get_packet(priv, __txs);
+ if (!skb) {
+ /*
+ * Store this event, so that the TX cleanup
+ * routine can check later for the needed packet.
+ */
+ tx_pend = kzalloc(sizeof(struct ath9k_htc_tx_event),
+ GFP_ATOMIC);
+ if (!tx_pend)
+ continue;
+
+ memcpy(&tx_pend->txs, __txs,
+ sizeof(struct __wmi_event_txstatus));
+
+ spin_lock(&priv->wmi->event_lock);
+ list_add_tail(&tx_pend->list,
+ &priv->wmi->pending_tx_events);
+ spin_unlock(&priv->wmi->event_lock);
- send_mac80211:
- /* Send status to mac80211 */
- ieee80211_tx_status(priv->hw, skb);
+ continue;
+ }
+
+ ath9k_htc_tx_process(priv, skb, __txs);
}
/* Wake TX queues if needed */
- spin_lock_bh(&priv->tx_lock);
- if (priv->tx_queues_stop) {
- priv->tx_queues_stop = false;
- spin_unlock_bh(&priv->tx_lock);
- ath_dbg(ath9k_hw_common(priv->ah), ATH_DBG_XMIT,
- "Waking up TX queues\n");
- ieee80211_wake_queues(priv->hw);
- return;
- }
- spin_unlock_bh(&priv->tx_lock);
+ ath9k_htc_check_wake_queues(priv);
}
void ath9k_htc_txep(void *drv_priv, struct sk_buff *skb,
enum htc_endpoint_id ep_id, bool txok)
{
struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) drv_priv;
- struct ath_common *common = ath9k_hw_common(priv->ah);
- struct ieee80211_tx_info *tx_info;
+ struct ath9k_htc_tx_ctl *tx_ctl;
+ struct sk_buff_head *epid_queue;
- if (!skb)
+ tx_ctl = HTC_SKB_CB(skb);
+ tx_ctl->txok = txok;
+ tx_ctl->timestamp = jiffies;
+
+ if (!txok) {
+ skb_queue_tail(&priv->tx.tx_failed, skb);
+ tasklet_schedule(&priv->tx_failed_tasklet);
return;
+ }
- if (ep_id == priv->mgmt_ep) {
- skb_pull(skb, sizeof(struct tx_mgmt_hdr));
- } else if ((ep_id == priv->data_bk_ep) ||
- (ep_id == priv->data_be_ep) ||
- (ep_id == priv->data_vi_ep) ||
- (ep_id == priv->data_vo_ep)) {
- skb_pull(skb, sizeof(struct tx_frame_hdr));
- } else {
- ath_err(common, "Unsupported TX EPID: %d\n", ep_id);
+ epid_queue = get_htc_epid_queue(priv, ep_id);
+ if (!epid_queue) {
dev_kfree_skb_any(skb);
return;
}
- tx_info = IEEE80211_SKB_CB(skb);
+ skb_queue_tail(epid_queue, skb);
+}
- if (txok)
- tx_info->flags |= IEEE80211_TX_STAT_ACK;
+static inline bool check_packet(struct ath9k_htc_priv *priv, struct sk_buff *skb)
+{
+ struct ath_common *common = ath9k_hw_common(priv->ah);
+ struct ath9k_htc_tx_ctl *tx_ctl;
- skb_queue_tail(&priv->tx_queue, skb);
- tasklet_schedule(&priv->tx_tasklet);
+ tx_ctl = HTC_SKB_CB(skb);
+
+ if (time_after(jiffies,
+ tx_ctl->timestamp +
+ msecs_to_jiffies(ATH9K_HTC_TX_TIMEOUT_INTERVAL))) {
+ ath_dbg(common, ATH_DBG_XMIT,
+ "Dropping a packet due to TX timeout\n");
+ return true;
+ }
+
+ return false;
+}
+
+static void ath9k_htc_tx_cleanup_queue(struct ath9k_htc_priv *priv,
+ struct sk_buff_head *epid_queue)
+{
+ bool process = false;
+ unsigned long flags;
+ struct sk_buff *skb, *tmp;
+ struct sk_buff_head queue;
+
+ skb_queue_head_init(&queue);
+
+ spin_lock_irqsave(&epid_queue->lock, flags);
+ skb_queue_walk_safe(epid_queue, skb, tmp) {
+ if (check_packet(priv, skb)) {
+ __skb_unlink(skb, epid_queue);
+ __skb_queue_tail(&queue, skb);
+ process = true;
+ }
+ }
+ spin_unlock_irqrestore(&epid_queue->lock, flags);
+
+ if (process) {
+ skb_queue_walk_safe(&queue, skb, tmp) {
+ __skb_unlink(skb, &queue);
+ ath9k_htc_tx_process(priv, skb, NULL);
+ }
+ }
+}
+
+void ath9k_htc_tx_cleanup_timer(unsigned long data)
+{
+ struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) data;
+ struct ath_common *common = ath9k_hw_common(priv->ah);
+ struct ath9k_htc_tx_event *event, *tmp;
+ struct sk_buff *skb;
+
+ spin_lock(&priv->wmi->event_lock);
+ list_for_each_entry_safe(event, tmp, &priv->wmi->pending_tx_events, list) {
+
+ skb = ath9k_htc_tx_get_packet(priv, &event->txs);
+ if (skb) {
+ ath_dbg(common, ATH_DBG_XMIT,
+ "Found packet for cookie: %d, epid: %d\n",
+ event->txs.cookie,
+ MS(event->txs.ts_rate, ATH9K_HTC_TXSTAT_EPID));
+
+ ath9k_htc_tx_process(priv, skb, &event->txs);
+ list_del(&event->list);
+ kfree(event);
+ continue;
+ }
+
+ if (++event->count >= ATH9K_HTC_TX_TIMEOUT_COUNT) {
+ list_del(&event->list);
+ kfree(event);
+ }
+ }
+ spin_unlock(&priv->wmi->event_lock);
+
+ /*
+ * Check if status-pending packets have to be cleaned up.
+ */
+ ath9k_htc_tx_cleanup_queue(priv, &priv->tx.mgmt_ep_queue);
+ ath9k_htc_tx_cleanup_queue(priv, &priv->tx.cab_ep_queue);
+ ath9k_htc_tx_cleanup_queue(priv, &priv->tx.data_be_queue);
+ ath9k_htc_tx_cleanup_queue(priv, &priv->tx.data_bk_queue);
+ ath9k_htc_tx_cleanup_queue(priv, &priv->tx.data_vi_queue);
+ ath9k_htc_tx_cleanup_queue(priv, &priv->tx.data_vo_queue);
+
+ /* Wake TX queues if needed */
+ ath9k_htc_check_wake_queues(priv);
+
+ mod_timer(&priv->tx.cleanup_timer,
+ jiffies + msecs_to_jiffies(ATH9K_HTC_TX_CLEANUP_INTERVAL));
}
int ath9k_tx_init(struct ath9k_htc_priv *priv)
{
- skb_queue_head_init(&priv->tx_queue);
+ skb_queue_head_init(&priv->tx.mgmt_ep_queue);
+ skb_queue_head_init(&priv->tx.cab_ep_queue);
+ skb_queue_head_init(&priv->tx.data_be_queue);
+ skb_queue_head_init(&priv->tx.data_bk_queue);
+ skb_queue_head_init(&priv->tx.data_vi_queue);
+ skb_queue_head_init(&priv->tx.data_vo_queue);
+ skb_queue_head_init(&priv->tx.tx_failed);
return 0;
}
@@ -507,8 +968,9 @@ static bool ath9k_rx_prepare(struct ath9k_htc_priv *priv,
int last_rssi = ATH_RSSI_DUMMY_MARKER;
__le16 fc;
- if (skb->len <= HTC_RX_FRAME_HEADER_SIZE) {
- ath_err(common, "Corrupted RX frame, dropping\n");
+ if (skb->len < HTC_RX_FRAME_HEADER_SIZE) {
+ ath_err(common, "Corrupted RX frame, dropping (len: %d)\n",
+ skb->len);
goto rx_next;
}
@@ -522,6 +984,8 @@ static bool ath9k_rx_prepare(struct ath9k_htc_priv *priv,
goto rx_next;
}
+ ath9k_htc_err_stat_rx(priv, rxstatus);
+
/* Get the RX status information */
memcpy(&rxbuf->rxstatus, rxstatus, HTC_RX_FRAME_HEADER_SIZE);
skb_pull(skb, HTC_RX_FRAME_HEADER_SIZE);
generated by cgit v1.2.3 (git 2.0.4) at 2024-07-13 00:00:42 +0000