#include "iwl-dev.h"
#include "iwl-core.h"
-#include "iwl-sta.h"
#include "iwl-io.h"
-#include "iwl-helpers.h"
#include "iwl-agn-hw.h"
#include "iwl-agn.h"
#include "iwl-trans.h"
-static inline int get_ac_from_tid(u16 tid)
-{
- if (likely(tid < ARRAY_SIZE(tid_to_ac)))
- return tid_to_ac[tid];
-
- /* no support for TIDs 8-15 yet */
- return -EINVAL;
-}
-
-static int iwlagn_txq_agg_enable(struct iwl_priv *priv, int txq_id, int sta_id,
- int tid)
-{
- if ((IWLAGN_FIRST_AMPDU_QUEUE > txq_id) ||
- (IWLAGN_FIRST_AMPDU_QUEUE +
- hw_params(priv).num_ampdu_queues <= txq_id)) {
- IWL_WARN(priv,
- "queue number out of range: %d, must be %d to %d\n",
- txq_id, IWLAGN_FIRST_AMPDU_QUEUE,
- IWLAGN_FIRST_AMPDU_QUEUE +
- hw_params(priv).num_ampdu_queues - 1);
- return -EINVAL;
- }
-
- /* Modify device's station table to Tx this TID */
- return iwl_sta_tx_modify_enable_tid(priv, sta_id, tid);
-}
-
static void iwlagn_tx_cmd_protection(struct iwl_priv *priv,
struct ieee80211_tx_info *info,
__le16 fc, __le32 *tx_flags)
tx_cmd->next_frame_len = 0;
}
-#define RTS_DFAULT_RETRY_LIMIT 60
-
static void iwlagn_tx_cmd_build_rate(struct iwl_priv *priv,
struct iwl_tx_cmd *tx_cmd,
struct ieee80211_tx_info *info,
u8 data_retry_limit;
u8 rate_plcp;
- /* Set retry limit on DATA packets and Probe Responses*/
- if (ieee80211_is_probe_resp(fc))
- data_retry_limit = 3;
- else
- data_retry_limit = IWLAGN_DEFAULT_TX_RETRY;
- tx_cmd->data_retry_limit = data_retry_limit;
+ if (priv->shrd->wowlan) {
+ rts_retry_limit = IWLAGN_LOW_RETRY_LIMIT;
+ data_retry_limit = IWLAGN_LOW_RETRY_LIMIT;
+ } else {
+ /* Set retry limit on RTS packets */
+ rts_retry_limit = IWLAGN_RTS_DFAULT_RETRY_LIMIT;
+
+ /* Set retry limit on DATA packets and Probe Responses*/
+ if (ieee80211_is_probe_resp(fc)) {
+ data_retry_limit = IWLAGN_MGMT_DFAULT_RETRY_LIMIT;
+ rts_retry_limit =
+ min(data_retry_limit, rts_retry_limit);
+ } else if (ieee80211_is_back_req(fc))
+ data_retry_limit = IWLAGN_BAR_DFAULT_RETRY_LIMIT;
+ else
+ data_retry_limit = IWLAGN_DEFAULT_TX_RETRY;
+ }
- /* Set retry limit on RTS packets */
- rts_retry_limit = RTS_DFAULT_RETRY_LIMIT;
- if (data_retry_limit < rts_retry_limit)
- rts_retry_limit = data_retry_limit;
+ tx_cmd->data_retry_limit = data_retry_limit;
tx_cmd->rts_retry_limit = rts_retry_limit;
/* DATA packets will use the uCode station table for rate/antenna
struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
struct iwl_device_cmd *dev_cmd = NULL;
struct iwl_tx_cmd *tx_cmd;
- int txq_id;
- u16 seq_number = 0;
__le16 fc;
u8 hdr_len;
u16 len;
u8 sta_id;
- u8 tid = 0;
unsigned long flags;
bool is_agg = false;
sta_priv = (void *)info->control.sta->drv_priv;
if (sta_priv && sta_priv->asleep &&
- (info->flags & IEEE80211_TX_CTL_PSPOLL_RESPONSE)) {
+ (info->flags & IEEE80211_TX_CTL_POLL_RESPONSE)) {
/*
* This sends an asynchronous command to the device,
* but we can rely on it being processed before the
iwl_sta_modify_sleep_tx_count(priv, sta_id, 1);
}
- /*
- * Send this frame after DTIM -- there's a special queue
- * reserved for this for contexts that support AP mode.
- */
- if (info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM) {
- txq_id = ctx->mcast_queue;
- /*
- * The microcode will clear the more data
- * bit in the last frame it transmits.
- */
- hdr->frame_control |=
- cpu_to_le16(IEEE80211_FCTL_MOREDATA);
- } else if (info->flags & IEEE80211_TX_CTL_TX_OFFCHAN)
- txq_id = IWL_AUX_QUEUE;
- else
- txq_id = ctx->ac_to_queue[skb_get_queue_mapping(skb)];
+ if (info->flags & IEEE80211_TX_CTL_AMPDU)
+ is_agg = true;
/* irqs already disabled/saved above when locking priv->shrd->lock */
spin_lock(&priv->shrd->sta_lock);
- if (ieee80211_is_data_qos(fc)) {
- u8 *qc = NULL;
- struct iwl_tid_data *tid_data;
- qc = ieee80211_get_qos_ctl(hdr);
- tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
- tid_data = &priv->shrd->tid_data[sta_id][tid];
-
- if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT))
- goto drop_unlock_sta;
-
- seq_number = tid_data->seq_number;
- seq_number &= IEEE80211_SCTL_SEQ;
- hdr->seq_ctrl = hdr->seq_ctrl &
- cpu_to_le16(IEEE80211_SCTL_FRAG);
- hdr->seq_ctrl |= cpu_to_le16(seq_number);
- seq_number += 0x10;
- /* aggregation is on for this <sta,tid> */
- if (info->flags & IEEE80211_TX_CTL_AMPDU &&
- tid_data->agg.state == IWL_AGG_ON) {
- txq_id = tid_data->agg.txq_id;
- is_agg = true;
- }
- }
-
dev_cmd = kmem_cache_alloc(priv->tx_cmd_pool, GFP_ATOMIC);
if (unlikely(!dev_cmd))
goto drop_unlock_sta;
memset(dev_cmd, 0, sizeof(*dev_cmd));
- tx_cmd = &dev_cmd->cmd.tx;
-
- /* Copy MAC header from skb into command buffer */
- memcpy(tx_cmd->hdr, hdr, hdr_len);
+ tx_cmd = (struct iwl_tx_cmd *) dev_cmd->payload;
/* Total # bytes to be transmitted */
len = (u16)skb->len;
iwl_update_stats(priv, true, fc, len);
+ memset(&info->status, 0, sizeof(info->status));
+
info->driver_data[0] = ctx;
info->driver_data[1] = dev_cmd;
- if (iwl_trans_tx(trans(priv), skb, dev_cmd, txq_id, fc, is_agg))
+ if (iwl_trans_tx(trans(priv), skb, dev_cmd, ctx->ctxid, sta_id))
goto drop_unlock_sta;
- if (ieee80211_is_data_qos(fc)) {
- priv->shrd->tid_data[sta_id][tid].tfds_in_queue++;
- if (!ieee80211_has_morefrags(fc))
- priv->shrd->tid_data[sta_id][tid].seq_number =
- seq_number;
- }
-
spin_unlock(&priv->shrd->sta_lock);
spin_unlock_irqrestore(&priv->shrd->lock, flags);
return -1;
}
-/*
- * Find first available (lowest unused) Tx Queue, mark it "active".
- * Called only when finding queue for aggregation.
- * Should never return anything < 7, because they should already
- * be in use as EDCA AC (0-3), Command (4), reserved (5, 6)
- */
-static int iwlagn_txq_ctx_activate_free(struct iwl_priv *priv)
-{
- int txq_id;
-
- for (txq_id = 0; txq_id < hw_params(priv).max_txq_num; txq_id++)
- if (!test_and_set_bit(txq_id, &priv->txq_ctx_active_msk))
- return txq_id;
- return -1;
-}
-
int iwlagn_tx_agg_start(struct iwl_priv *priv, struct ieee80211_vif *vif,
struct ieee80211_sta *sta, u16 tid, u16 *ssn)
{
+ struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
int sta_id;
- int txq_id;
int ret;
- unsigned long flags;
- struct iwl_tid_data *tid_data;
IWL_DEBUG_HT(priv, "TX AGG request on ra = %pM tid = %d\n",
sta->addr, tid);
return -ENXIO;
}
- txq_id = iwlagn_txq_ctx_activate_free(priv);
- if (txq_id == -1) {
- IWL_ERR(priv, "No free aggregation queue available\n");
- return -ENXIO;
- }
-
- spin_lock_irqsave(&priv->shrd->sta_lock, flags);
- tid_data = &priv->shrd->tid_data[sta_id][tid];
- *ssn = SEQ_TO_SN(tid_data->seq_number);
- tid_data->agg.txq_id = txq_id;
- iwl_set_swq_id(&priv->txq[txq_id], get_ac_from_tid(tid), txq_id);
- spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
-
- ret = iwlagn_txq_agg_enable(priv, txq_id, sta_id, tid);
+ ret = iwl_sta_tx_modify_enable_tid(priv, sta_id, tid);
if (ret)
return ret;
- spin_lock_irqsave(&priv->shrd->sta_lock, flags);
- tid_data = &priv->shrd->tid_data[sta_id][tid];
- if (tid_data->tfds_in_queue == 0) {
- IWL_DEBUG_HT(priv, "HW queue is empty\n");
- tid_data->agg.state = IWL_AGG_ON;
- ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
- } else {
- IWL_DEBUG_HT(priv, "HW queue is NOT empty: %d packets in HW queue\n",
- tid_data->tfds_in_queue);
- tid_data->agg.state = IWL_EMPTYING_HW_QUEUE_ADDBA;
- }
- spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
+ ret = iwl_trans_tx_agg_alloc(trans(priv), vif_priv->ctx->ctxid, sta_id,
+ tid, ssn);
+
return ret;
}
int iwlagn_tx_agg_stop(struct iwl_priv *priv, struct ieee80211_vif *vif,
struct ieee80211_sta *sta, u16 tid)
{
- int txq_id, sta_id, ssn;
- struct iwl_tid_data *tid_data;
- int write_ptr, read_ptr;
- unsigned long flags;
+ int sta_id;
+ struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
sta_id = iwl_sta_id(sta);
return -ENXIO;
}
- spin_lock_irqsave(&priv->shrd->sta_lock, flags);
-
- tid_data = &priv->shrd->tid_data[sta_id][tid];
- ssn = (tid_data->seq_number & IEEE80211_SCTL_SEQ) >> 4;
- txq_id = tid_data->agg.txq_id;
-
- switch (priv->shrd->tid_data[sta_id][tid].agg.state) {
- case IWL_EMPTYING_HW_QUEUE_ADDBA:
- /*
- * This can happen if the peer stops aggregation
- * again before we've had a chance to drain the
- * queue we selected previously, i.e. before the
- * session was really started completely.
- */
- IWL_DEBUG_HT(priv, "AGG stop before setup done\n");
- goto turn_off;
- case IWL_AGG_ON:
- break;
- default:
- IWL_WARN(priv, "Stopping AGG while state not ON or starting\n");
- }
-
- write_ptr = priv->txq[txq_id].q.write_ptr;
- read_ptr = priv->txq[txq_id].q.read_ptr;
-
- /* The queue is not empty */
- if (write_ptr != read_ptr) {
- IWL_DEBUG_HT(priv, "Stopping a non empty AGG HW QUEUE\n");
- priv->shrd->tid_data[sta_id][tid].agg.state =
- IWL_EMPTYING_HW_QUEUE_DELBA;
- spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
- return 0;
- }
-
- IWL_DEBUG_HT(priv, "HW queue is empty\n");
- turn_off:
- priv->shrd->tid_data[sta_id][tid].agg.state = IWL_AGG_OFF;
-
- /* do not restore/save irqs */
- spin_unlock(&priv->shrd->sta_lock);
- spin_lock(&priv->shrd->lock);
-
- /*
- * the only reason this call can fail is queue number out of range,
- * which can happen if uCode is reloaded and all the station
- * information are lost. if it is outside the range, there is no need
- * to deactivate the uCode queue, just return "success" to allow
- * mac80211 to clean up it own data.
- */
- iwl_trans_txq_agg_disable(trans(priv), txq_id);
- spin_unlock_irqrestore(&priv->shrd->lock, flags);
-
- ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
-
- return 0;
-}
-
-static int iwlagn_txq_check_empty(struct iwl_priv *priv,
- int sta_id, u8 tid, int txq_id)
-{
- struct iwl_queue *q = &priv->txq[txq_id].q;
- u8 *addr = priv->stations[sta_id].sta.sta.addr;
- struct iwl_tid_data *tid_data = &priv->shrd->tid_data[sta_id][tid];
- struct iwl_rxon_context *ctx;
-
- ctx = &priv->contexts[priv->stations[sta_id].ctxid];
-
- lockdep_assert_held(&priv->shrd->sta_lock);
-
- switch (priv->shrd->tid_data[sta_id][tid].agg.state) {
- case IWL_EMPTYING_HW_QUEUE_DELBA:
- /* We are reclaiming the last packet of the */
- /* aggregated HW queue */
- if ((txq_id == tid_data->agg.txq_id) &&
- (q->read_ptr == q->write_ptr)) {
- IWL_DEBUG_HT(priv, "HW queue empty: continue DELBA flow\n");
- iwl_trans_txq_agg_disable(trans(priv), txq_id);
- tid_data->agg.state = IWL_AGG_OFF;
- ieee80211_stop_tx_ba_cb_irqsafe(ctx->vif, addr, tid);
- }
- break;
- case IWL_EMPTYING_HW_QUEUE_ADDBA:
- /* We are reclaiming the last packet of the queue */
- if (tid_data->tfds_in_queue == 0) {
- IWL_DEBUG_HT(priv, "HW queue empty: continue ADDBA flow\n");
- tid_data->agg.state = IWL_AGG_ON;
- ieee80211_start_tx_ba_cb_irqsafe(ctx->vif, addr, tid);
- }
- break;
- }
-
- return 0;
+ return iwl_trans_tx_agg_disable(trans(priv), vif_priv->ctx->ctxid,
+ sta_id, tid);
}
static void iwlagn_non_agg_tx_status(struct iwl_priv *priv,
IWL_DEBUG_COEX(priv, "receive reply tx w/ bt_kill\n");
}
+ if (tx_resp->frame_count == 1)
+ return;
+
/* Construct bit-map of pending frames within Tx window */
for (i = 0; i < tx_resp->frame_count; i++) {
u16 fstatus = le16_to_cpu(frame_status[i].status);
tx_resp->frame_count) & MAX_SN;
}
-static void iwl_free_tfds_in_queue(struct iwl_priv *priv,
- int sta_id, int tid, int freed)
-{
- lockdep_assert_held(&priv->shrd->sta_lock);
-
- if (priv->shrd->tid_data[sta_id][tid].tfds_in_queue >= freed)
- priv->shrd->tid_data[sta_id][tid].tfds_in_queue -= freed;
- else {
- IWL_DEBUG_TX(priv, "free more than tfds_in_queue (%u:%d)\n",
- priv->shrd->tid_data[sta_id][tid].tfds_in_queue,
- freed);
- priv->shrd->tid_data[sta_id][tid].tfds_in_queue = 0;
- }
-}
-
static void iwlagn_count_tx_err_status(struct iwl_priv *priv, u16 status)
{
status &= TX_STATUS_MSK;
}
}
-void iwlagn_rx_reply_tx(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
+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 = SEQ_TO_INDEX(sequence);
- struct iwl_tx_queue *txq = &priv->txq[txq_id];
+ 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);
struct sk_buff_head skbs;
struct sk_buff *skb;
struct iwl_rxon_context *ctx;
-
- if ((cmd_index >= txq->q.n_bd) ||
- (iwl_queue_used(&txq->q, cmd_index) == 0)) {
- IWL_ERR(priv, "%s: Read index for DMA queue txq_id (%d) "
- "cmd_index %d is out of range [0-%d] %d %d\n",
- __func__, txq_id, cmd_index, txq->q.n_bd,
- txq->q.write_ptr, txq->q.read_ptr);
- return;
- }
-
- txq->time_stamp = jiffies;
+ bool is_agg = (txq_id >= IWLAGN_FIRST_AMPDU_QUEUE);
tid = (tx_resp->ra_tid & IWLAGN_TX_RES_TID_MSK) >>
IWLAGN_TX_RES_TID_POS;
spin_lock_irqsave(&priv->shrd->sta_lock, flags);
- if (txq->sched_retry)
+ if (is_agg)
iwl_rx_reply_tx_agg(priv, tx_resp);
if (tx_resp->frame_count == 1) {
- bool is_agg = (txq_id >= IWLAGN_FIRST_AMPDU_QUEUE);
-
__skb_queue_head_init(&skbs);
/*we can free until ssn % q.n_bd not inclusive */
- iwl_trans_reclaim(trans(priv), txq_id, ssn, status, &skbs);
+ iwl_trans_reclaim(trans(priv), sta_id, tid, txq_id,
+ ssn, status, &skbs);
freed = 0;
while (!skb_queue_empty(&skbs)) {
skb = __skb_dequeue(&skbs);
iwl_is_associated_ctx(ctx) && ctx->vif &&
ctx->vif->type == NL80211_IFTYPE_STATION) {
ctx->last_tx_rejected = true;
- iwl_stop_queue(priv, &priv->txq[txq_id]);
+ iwl_trans_stop_queue(trans(priv), txq_id);
IWL_DEBUG_TX_REPLY(priv,
"TXQ %d status %s (0x%08x) "
}
WARN_ON(!is_agg && freed != 1);
-
- iwl_free_tfds_in_queue(priv, sta_id, tid, freed);
- iwlagn_txq_check_empty(priv, sta_id, tid, txq_id);
}
iwl_check_abort_status(priv, tx_resp->frame_count, status);
spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
+ return 0;
}
/**
* Handles block-acknowledge notification from device, which reports success
* of frames sent via aggregation.
*/
-void iwlagn_rx_reply_compressed_ba(struct iwl_priv *priv,
- struct iwl_rx_mem_buffer *rxb)
+int iwlagn_rx_reply_compressed_ba(struct iwl_priv *priv,
+ struct iwl_rx_mem_buffer *rxb,
+ struct iwl_device_cmd *cmd)
{
struct iwl_rx_packet *pkt = rxb_addr(rxb);
struct iwl_compressed_ba_resp *ba_resp = &pkt->u.compressed_ba;
- struct iwl_tx_queue *txq = NULL;
struct iwl_ht_agg *agg;
struct sk_buff_head reclaimed_skbs;
struct ieee80211_tx_info *info;
struct ieee80211_hdr *hdr;
struct sk_buff *skb;
unsigned long flags;
- int index;
int sta_id;
int tid;
int freed;
if (scd_flow >= hw_params(priv).max_txq_num) {
IWL_ERR(priv,
"BUG_ON scd_flow is bigger than number of queues\n");
- return;
+ return 0;
}
- txq = &priv->txq[scd_flow];
sta_id = ba_resp->sta_id;
tid = ba_resp->tid;
agg = &priv->shrd->tid_data[sta_id][tid].agg;
- /* Find index of block-ack window */
- index = ba_resp_scd_ssn & (txq->q.n_bd - 1);
-
spin_lock_irqsave(&priv->shrd->sta_lock, flags);
if (unlikely(agg->txq_id != scd_flow)) {
"BA scd_flow %d does not match txq_id %d\n",
scd_flow, agg->txq_id);
spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
- return;
+ return 0;
}
if (unlikely(!agg->wait_for_ba)) {
if (unlikely(ba_resp->bitmap))
IWL_ERR(priv, "Received BA when not expected\n");
spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
- return;
+ return 0;
}
IWL_DEBUG_TX_REPLY(priv, "REPLY_COMPRESSED_BA [%d] Received from %pM, "
ba_resp->scd_ssn);
/* Mark that the expected block-ack response arrived */
- agg->wait_for_ba = 0;
+ agg->wait_for_ba = false;
/* Sanity check values reported by uCode */
if (ba_resp->txed_2_done > ba_resp->txed) {
/* Release all TFDs before the SSN, i.e. all TFDs in front of
* block-ack window (we assume that they've been successfully
* transmitted ... if not, it's too late anyway). */
- iwl_trans_reclaim(trans(priv), scd_flow, ba_resp_scd_ssn, 0,
- &reclaimed_skbs);
+ iwl_trans_reclaim(trans(priv), sta_id, tid, scd_flow, ba_resp_scd_ssn,
+ 0, &reclaimed_skbs);
freed = 0;
while (!skb_queue_empty(&reclaimed_skbs)) {
else
WARN_ON_ONCE(1);
- if (freed == 0) {
+ info = IEEE80211_SKB_CB(skb);
+ kmem_cache_free(priv->tx_cmd_pool, (info->driver_data[1]));
+
+ if (freed == 1) {
/* this is the first skb we deliver in this batch */
/* put the rate scaling data there */
info = IEEE80211_SKB_CB(skb);
info);
}
- info = IEEE80211_SKB_CB(skb);
- kmem_cache_free(priv->tx_cmd_pool, (info->driver_data[1]));
-
ieee80211_tx_status_irqsafe(priv->hw, skb);
}
- iwl_free_tfds_in_queue(priv, sta_id, tid, freed);
- iwlagn_txq_check_empty(priv, sta_id, tid, scd_flow);
-
spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
+ return 0;
}
projects / cascardo / linux.git / blobdiff