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iwlwifi: tid_data logic move to upper layer - tx AGG stop 

The tid_data is not related to the transport layer, so move
the logic that depends on it to the upper layer.
This patch deals with tx AGG stop.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
This commit is contained in:
Emmanuel Grumbach 2011-11-21 13:25:31 +02:00 committed by Wey-Yi Guy
parent 1f40e145eb
commit bc23773059
5 changed files with 90 additions and 102 deletions
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88
drivers/net/wireless/iwlwifi/iwl-agn-tx.c
View File

@ -395,6 +395,77 @@ drop_unlock_priv:
return -1;
}
int iwlagn_tx_agg_stop(struct iwl_priv *priv, struct ieee80211_vif *vif,
struct ieee80211_sta *sta, u16 tid)
{
struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
struct iwl_tid_data *tid_data;
unsigned long flags;
int sta_id;
sta_id = iwl_sta_id(sta);
if (sta_id == IWL_INVALID_STATION) {
IWL_ERR(priv, "Invalid station for AGG tid %d\n", tid);
return -ENXIO;
}
spin_lock_irqsave(&priv->shrd->sta_lock, flags);
tid_data = &priv->shrd->tid_data[sta_id][tid];
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 for %d on %d (%d)\n", sta_id, tid,
priv->shrd->tid_data[sta_id][tid].agg.state);
spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
return 0;
}
tid_data->agg.ssn = SEQ_TO_SN(tid_data->seq_number);
/* There are still packets for this RA / TID in the HW */
if (tid_data->agg.ssn != tid_data->next_reclaimed) {
IWL_DEBUG_TX_QUEUES(priv, "Can't proceed: ssn %d, "
"next_recl = %d",
tid_data->agg.ssn,
tid_data->next_reclaimed);
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_TX_QUEUES(priv, "Can proceed: ssn = next_recl = %d",
tid_data->agg.ssn);
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);
iwl_trans_tx_agg_disable(trans(priv), sta_id, tid);
spin_unlock_irqrestore(&priv->shrd->lock, flags);
iwl_stop_tx_ba_trans_ready(priv, vif_priv->ctx->ctxid, sta_id, tid);
return 0;
}
int iwlagn_tx_agg_start(struct iwl_priv *priv, struct ieee80211_vif *vif,
struct ieee80211_sta *sta, u16 tid, u16 *ssn)
{
@ -428,23 +499,6 @@ int iwlagn_tx_agg_start(struct iwl_priv *priv, struct ieee80211_vif *vif,
return ret;
}
int iwlagn_tx_agg_stop(struct iwl_priv *priv, struct ieee80211_vif *vif,
struct ieee80211_sta *sta, u16 tid)
{
int sta_id;
struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
sta_id = iwl_sta_id(sta);
if (sta_id == IWL_INVALID_STATION) {
IWL_ERR(priv, "Invalid station for AGG tid %d\n", tid);
return -ENXIO;
}
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,
struct iwl_rxon_context *ctx,
const u8 *addr1)

4
drivers/net/wireless/iwlwifi/iwl-trans-pcie-int.h
View File

@ -280,10 +280,8 @@ void iwl_tx_cmd_complete(struct iwl_trans *trans,
void iwl_trans_txq_update_byte_cnt_tbl(struct iwl_trans *trans,
struct iwl_tx_queue *txq,
u16 byte_cnt);
void iwl_trans_pcie_txq_agg_disable(struct iwl_trans *trans, int txq_id);
int iwl_trans_pcie_tx_agg_disable(struct iwl_trans *trans,
enum iwl_rxon_context_id ctx, int sta_id,
int tid);
int sta_id, int tid);
void iwl_trans_set_wr_ptrs(struct iwl_trans *trans, int txq_id, u32 index);
void iwl_trans_tx_queue_set_status(struct iwl_trans *trans,
struct iwl_tx_queue *txq,

92
drivers/net/wireless/iwlwifi/iwl-trans-pcie-tx.c
View File

@ -578,9 +578,23 @@ int iwl_trans_pcie_tx_agg_alloc(struct iwl_trans *trans,
return 0;
}
void iwl_trans_pcie_txq_agg_disable(struct iwl_trans *trans, int txq_id)
int iwl_trans_pcie_tx_agg_disable(struct iwl_trans *trans, int sta_id, int tid)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
/* TODO: the transport layer shouldn't access the tid_data */
int txq_id = trans->shrd->tid_data[sta_id][tid].agg.txq_id;
if ((IWLAGN_FIRST_AMPDU_QUEUE > txq_id) ||
(IWLAGN_FIRST_AMPDU_QUEUE +
hw_params(trans).num_ampdu_queues <= txq_id)) {
IWL_ERR(trans,
"queue number out of range: %d, must be %d to %d\n",
txq_id, IWLAGN_FIRST_AMPDU_QUEUE,
IWLAGN_FIRST_AMPDU_QUEUE +
hw_params(trans).num_ampdu_queues - 1);
return -EINVAL;
}
iwlagn_tx_queue_stop_scheduler(trans, txq_id);
iwl_clear_bits_prph(bus(trans), SCD_AGGR_SEL, (1 << txq_id));
@ -593,82 +607,6 @@ void iwl_trans_pcie_txq_agg_disable(struct iwl_trans *trans, int txq_id)
iwl_clear_bits_prph(bus(trans), SCD_INTERRUPT_MASK, (1 << txq_id));
iwl_txq_ctx_deactivate(trans_pcie, txq_id);
iwl_trans_tx_queue_set_status(trans, &trans_pcie->txq[txq_id], 0, 0);
}
int iwl_trans_pcie_tx_agg_disable(struct iwl_trans *trans,
enum iwl_rxon_context_id ctx, int sta_id,
int tid)
{
struct iwl_tid_data *tid_data;
unsigned long flags;
int txq_id;
spin_lock_irqsave(&trans->shrd->sta_lock, flags);
tid_data = &trans->shrd->tid_data[sta_id][tid];
txq_id = tid_data->agg.txq_id;
if ((IWLAGN_FIRST_AMPDU_QUEUE > txq_id) ||
(IWLAGN_FIRST_AMPDU_QUEUE +
hw_params(trans).num_ampdu_queues <= txq_id)) {
IWL_ERR(trans,
"queue number out of range: %d, must be %d to %d\n",
txq_id, IWLAGN_FIRST_AMPDU_QUEUE,
IWLAGN_FIRST_AMPDU_QUEUE +
hw_params(trans).num_ampdu_queues - 1);
spin_unlock_irqrestore(&trans->shrd->sta_lock, flags);
return -EINVAL;
}
switch (trans->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(trans, "AGG stop before setup done\n");
goto turn_off;
case IWL_AGG_ON:
break;
default:
IWL_WARN(trans, "Stopping AGG while state not ON "
"or starting for %d on %d (%d)\n", sta_id, tid,
trans->shrd->tid_data[sta_id][tid].agg.state);
spin_unlock_irqrestore(&trans->shrd->sta_lock, flags);
return 0;
}
tid_data->agg.ssn = SEQ_TO_SN(tid_data->seq_number);
/* There are still packets for this RA / TID in the HW */
if (tid_data->agg.ssn != tid_data->next_reclaimed) {
IWL_DEBUG_TX_QUEUES(trans, "Can't proceed: ssn %d, "
"next_recl = %d",
tid_data->agg.ssn,
tid_data->next_reclaimed);
trans->shrd->tid_data[sta_id][tid].agg.state =
IWL_EMPTYING_HW_QUEUE_DELBA;
spin_unlock_irqrestore(&trans->shrd->sta_lock, flags);
return 0;
}
IWL_DEBUG_TX_QUEUES(trans, "Can proceed: ssn = next_recl = %d",
tid_data->agg.ssn);
turn_off:
trans->shrd->tid_data[sta_id][tid].agg.state = IWL_AGG_OFF;
/* do not restore/save irqs */
spin_unlock(&trans->shrd->sta_lock);
spin_lock(&trans->shrd->lock);
iwl_trans_pcie_txq_agg_disable(trans, txq_id);
spin_unlock_irqrestore(&trans->shrd->lock, flags);
iwl_stop_tx_ba_trans_ready(priv(trans), ctx, sta_id, tid);
return 0;
}

2
drivers/net/wireless/iwlwifi/iwl-trans-pcie.c
View File

@ -1290,7 +1290,7 @@ static int iwlagn_txq_check_empty(struct iwl_trans *trans,
IWL_DEBUG_TX_QUEUES(trans,
"Can continue DELBA flow ssn = next_recl ="
" %d", tid_data->next_reclaimed);
iwl_trans_pcie_txq_agg_disable(trans, txq_id);
iwl_trans_pcie_tx_agg_disable(trans, sta_id, tid);
tid_data->agg.state = IWL_AGG_OFF;
iwl_stop_tx_ba_trans_ready(priv(trans),
NUM_IWL_RXON_CTX,

6
drivers/net/wireless/iwlwifi/iwl-trans.h
View File

@ -184,8 +184,7 @@ struct iwl_trans_ops {
struct sk_buff_head *skbs);
int (*tx_agg_disable)(struct iwl_trans *trans,
enum iwl_rxon_context_id ctx, int sta_id,
int tid);
int sta_id, int tid);
int (*tx_agg_alloc)(struct iwl_trans *trans,
enum iwl_rxon_context_id ctx, int sta_id, int tid,
u16 *ssn);
@ -318,10 +317,9 @@ static inline void iwl_trans_reclaim(struct iwl_trans *trans, int sta_id,
}
static inline int iwl_trans_tx_agg_disable(struct iwl_trans *trans,
enum iwl_rxon_context_id ctx,
int sta_id, int tid)
{
return trans->ops->tx_agg_disable(trans, ctx, sta_id, tid);
return trans->ops->tx_agg_disable(trans, sta_id, tid);
}
static inline int iwl_trans_tx_agg_alloc(struct iwl_trans *trans,