int iwlagn_rx_reply_tx(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb,
struct iwl_device_cmd *cmd)
{
struct iwl_rx_packet *pkt = rxb_addr(rxb);
u16 sequence = le16_to_cpu(pkt->hdr.sequence);
int txq_id = SEQ_TO_QUEUE(sequence);
int cmd_index __maybe_unused = SEQ_TO_INDEX(sequence);
struct iwlagn_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
struct ieee80211_hdr *hdr;
u32 status = le16_to_cpu(tx_resp->status.status);
u32 ssn = iwlagn_get_scd_ssn(tx_resp);
int tid;
int sta_id;
int freed;
struct ieee80211_tx_info *info;
unsigned long flags;
struct sk_buff_head skbs;
struct sk_buff *skb;
struct iwl_rxon_context *ctx;
bool is_agg = (txq_id >= IWLAGN_FIRST_AMPDU_QUEUE);
tid = (tx_resp->ra_tid & IWLAGN_TX_RES_TID_MSK) >>
IWLAGN_TX_RES_TID_POS;
sta_id = (tx_resp->ra_tid & IWLAGN_TX_RES_RA_MSK) >>
IWLAGN_TX_RES_RA_POS;
spin_lock_irqsave(&priv->shrd->sta_lock, flags);
if (is_agg)
iwl_rx_reply_tx_agg(priv, tx_resp);
if (tx_resp->frame_count == 1) {
IWL_DEBUG_TX_REPLY(priv, "Q %d, ssn %d", txq_id, ssn);
__skb_queue_head_init(&skbs);
/*we can free until ssn % q.n_bd not inclusive */
iwl_trans_reclaim(trans(priv), sta_id, tid, txq_id,
ssn, status, &skbs);
freed = 0;
while (!skb_queue_empty(&skbs)) {
skb = __skb_dequeue(&skbs);
hdr = (struct ieee80211_hdr *)skb->data;
if (!ieee80211_is_data_qos(hdr->frame_control))
priv->last_seq_ctl = tx_resp->seq_ctl;
info = IEEE80211_SKB_CB(skb);
ctx = info->driver_data[0];
kmem_cache_free(priv->tx_cmd_pool,
(info->driver_data[1]));
memset(&info->status, 0, sizeof(info->status));
if (status == TX_STATUS_FAIL_PASSIVE_NO_RX &&
iwl_is_associated_ctx(ctx) && ctx->vif &&
ctx->vif->type == NL80211_IFTYPE_STATION) {
ctx->last_tx_rejected = true;
iwl_trans_stop_queue(trans(priv), txq_id,
"Tx on passive channel");
IWL_DEBUG_TX_REPLY(priv,
"TXQ %d status %s (0x%08x) "
"rate_n_flags 0x%x retries %d\n",
txq_id,
iwl_get_tx_fail_reason(status),
status,
le32_to_cpu(tx_resp->rate_n_flags),
tx_resp->failure_frame);
IWL_DEBUG_TX_REPLY(priv,
"FrameCnt = %d, idx=%d\n",
tx_resp->frame_count, cmd_index);
}
/* check if BAR is needed */
if (is_agg && !iwl_is_tx_success(status))
info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK;
iwlagn_set_tx_status(priv, IEEE80211_SKB_CB(skb),
tx_resp, is_agg);
if (!is_agg)
iwlagn_non_agg_tx_status(priv, ctx, hdr->addr1);
ieee80211_tx_status_irqsafe(priv->hw, skb);
freed++;
}
WARN_ON(!is_agg && freed != 1);
}
iwl_check_abort_status(priv, tx_resp->frame_count, status);
spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
return 0;
}
static void iwl5000_rx_reply_tx(struct iwl_priv *priv,
struct iwl_rx_mem_buffer *rxb)
{
struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
u16 sequence = le16_to_cpu(pkt->hdr.sequence);
int txq_id = SEQ_TO_QUEUE(sequence);
int index = SEQ_TO_INDEX(sequence);
struct iwl_tx_queue *txq = &priv->txq[txq_id];
struct ieee80211_tx_info *info;
struct iwl5000_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
u32 status = le16_to_cpu(tx_resp->status.status);
int tid;
int sta_id;
int freed;
if ((index >= txq->q.n_bd) || (iwl_queue_used(&txq->q, index) == 0)) {
IWL_ERR(priv, "Read index for DMA queue txq_id (%d) index %d "
"is out of range [0-%d] %d %d\n", txq_id,
index, txq->q.n_bd, txq->q.write_ptr,
txq->q.read_ptr);
return;
}
info = IEEE80211_SKB_CB(txq->txb[txq->q.read_ptr].skb[0]);
memset(&info->status, 0, sizeof(info->status));
tid = (tx_resp->ra_tid & IWL50_TX_RES_TID_MSK) >> IWL50_TX_RES_TID_POS;
sta_id = (tx_resp->ra_tid & IWL50_TX_RES_RA_MSK) >> IWL50_TX_RES_RA_POS;
if (txq->sched_retry) {
const u32 scd_ssn = iwl5000_get_scd_ssn(tx_resp);
struct iwl_ht_agg *agg = NULL;
agg = &priv->stations[sta_id].tid[tid].agg;
iwl5000_tx_status_reply_tx(priv, agg, tx_resp, txq_id, index);
/* check if BAR is needed */
if ((tx_resp->frame_count == 1) && !iwl_is_tx_success(status))
info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK;
if (txq->q.read_ptr != (scd_ssn & 0xff)) {
index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
IWL_DEBUG_TX_REPLY(priv, "Retry scheduler reclaim "
"scd_ssn=%d idx=%d txq=%d swq=%d\n",
scd_ssn , index, txq_id, txq->swq_id);
freed = iwl_tx_queue_reclaim(priv, txq_id, index);
priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
if (priv->mac80211_registered &&
(iwl_queue_space(&txq->q) > txq->q.low_mark) &&
(agg->state != IWL_EMPTYING_HW_QUEUE_DELBA)) {
if (agg->state == IWL_AGG_OFF)
iwl_wake_queue(priv, txq_id);
else
iwl_wake_queue(priv, txq->swq_id);
}
}
} else {
BUG_ON(txq_id != txq->swq_id);
info->status.rates[0].count = tx_resp->failure_frame + 1;
info->flags |= iwl_is_tx_success(status) ?
IEEE80211_TX_STAT_ACK : 0;
iwl_hwrate_to_tx_control(priv,
le32_to_cpu(tx_resp->rate_n_flags),
info);
IWL_DEBUG_TX_REPLY(priv, "TXQ %d status %s (0x%08x) rate_n_flags "
"0x%x retries %d\n",
txq_id,
iwl_get_tx_fail_reason(status), status,
le32_to_cpu(tx_resp->rate_n_flags),
tx_resp->failure_frame);
freed = iwl_tx_queue_reclaim(priv, txq_id, index);
if (ieee80211_is_data_qos(tx_resp->frame_ctrl))
priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
if (priv->mac80211_registered &&
(iwl_queue_space(&txq->q) > txq->q.low_mark))
iwl_wake_queue(priv, txq_id);
}
if (ieee80211_is_data_qos(tx_resp->frame_ctrl))
iwl_txq_check_empty(priv, sta_id, tid, txq_id);
if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
IWL_ERR(priv, "TODO: Implement Tx ABORT REQUIRED!!!\n");
}
int iwlagn_rx_reply_tx(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb,
struct iwl_device_cmd *cmd)
{
struct iwl_rx_packet *pkt = rxb_addr(rxb);
u16 sequence = le16_to_cpu(pkt->hdr.sequence);
int txq_id = SEQ_TO_QUEUE(sequence);
int cmd_index __maybe_unused = SEQ_TO_INDEX(sequence);
struct iwlagn_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
struct ieee80211_hdr *hdr;
u32 status = le16_to_cpu(tx_resp->status.status);
u16 ssn = iwlagn_get_scd_ssn(tx_resp);
int tid;
int sta_id;
int freed;
struct ieee80211_tx_info *info;
unsigned long flags;
struct sk_buff_head skbs;
struct sk_buff *skb;
struct iwl_rxon_context *ctx;
bool is_agg = (txq_id >= IWLAGN_FIRST_AMPDU_QUEUE);
tid = (tx_resp->ra_tid & IWLAGN_TX_RES_TID_MSK) >>
IWLAGN_TX_RES_TID_POS;
sta_id = (tx_resp->ra_tid & IWLAGN_TX_RES_RA_MSK) >>
IWLAGN_TX_RES_RA_POS;
spin_lock_irqsave(&priv->shrd->sta_lock, flags);
if (is_agg)
iwl_rx_reply_tx_agg(priv, tx_resp);
if (tx_resp->frame_count == 1) {
u16 next_reclaimed = le16_to_cpu(tx_resp->seq_ctl);
next_reclaimed = SEQ_TO_SN(next_reclaimed + 0x10);
if (is_agg) {
/* If this is an aggregation queue, we can rely on the
* ssn since the wifi sequence number corresponds to
* the index in the TFD ring (%256).
* The seq_ctl is the sequence control of the packet
* to which this Tx response relates. But if there is a
* hole in the bitmap of the BA we received, this Tx
* response may allow to reclaim the hole and all the
* subsequent packets that were already acked.
* In that case, seq_ctl != ssn, and the next packet
* to be reclaimed will be ssn and not seq_ctl.
*/
next_reclaimed = ssn;
}
__skb_queue_head_init(&skbs);
priv->tid_data[sta_id][tid].next_reclaimed = next_reclaimed;
IWL_DEBUG_TX_REPLY(priv, "Next reclaimed packet:%d",
next_reclaimed);
/*we can free until ssn % q.n_bd not inclusive */
WARN_ON(iwl_trans_reclaim(trans(priv), sta_id, tid, txq_id,
ssn, status, &skbs));
iwlagn_check_ratid_empty(priv, sta_id, tid);
freed = 0;
while (!skb_queue_empty(&skbs)) {
skb = __skb_dequeue(&skbs);
hdr = (struct ieee80211_hdr *)skb->data;
if (!ieee80211_is_data_qos(hdr->frame_control))
priv->last_seq_ctl = tx_resp->seq_ctl;
info = IEEE80211_SKB_CB(skb);
ctx = info->driver_data[0];
kmem_cache_free(priv->tx_cmd_pool,
(info->driver_data[1]));
memset(&info->status, 0, sizeof(info->status));
if (status == TX_STATUS_FAIL_PASSIVE_NO_RX &&
iwl_is_associated_ctx(ctx) && ctx->vif &&
ctx->vif->type == NL80211_IFTYPE_STATION) {
ctx->last_tx_rejected = true;
iwl_trans_stop_queue(trans(priv), txq_id,
"Tx on passive channel");
IWL_DEBUG_TX_REPLY(priv,
"TXQ %d status %s (0x%08x) "
"rate_n_flags 0x%x retries %d\n",
txq_id,
iwl_get_tx_fail_reason(status),
status,
le32_to_cpu(tx_resp->rate_n_flags),
tx_resp->failure_frame);
IWL_DEBUG_TX_REPLY(priv,
"FrameCnt = %d, idx=%d\n",
tx_resp->frame_count, cmd_index);
}
/* check if BAR is needed */
if (is_agg && !iwl_is_tx_success(status))
info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK;
iwlagn_set_tx_status(priv, IEEE80211_SKB_CB(skb),
tx_resp, is_agg);
if (!is_agg)
iwlagn_non_agg_tx_status(priv, ctx, hdr->addr1);
ieee80211_tx_status_irqsafe(priv->hw, skb);
freed++;
}
WARN_ON(!is_agg && freed != 1);
}
iwl_check_abort_status(priv, tx_resp->frame_count, status);
spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
return 0;
}
