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iwlwifi: allow to wait for a subset of the queues

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This will be used later to flush / wait for queues that are
related to a specific vif.

Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This commit is contained in:
Emmanuel Grumbach 2014-03-24 11:23:51 +02:00
parent d13c8dca67
commit 3cafdbe6ad
4 changed files with 12 additions and 8 deletions
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2
drivers/net/wireless/iwlwifi/dvm/lib.c
View File

@ -180,7 +180,7 @@ void iwlagn_dev_txfifo_flush(struct iwl_priv *priv)
goto done;
}
IWL_DEBUG_INFO(priv, "wait transmit/flush all frames\n");
iwl_trans_wait_tx_queue_empty(priv->trans);
iwl_trans_wait_tx_queue_empty(priv->trans, 0xffffffff);
done:
ieee80211_wake_queues(priv->hw);
mutex_unlock(&priv->mutex);

2
drivers/net/wireless/iwlwifi/dvm/mac80211.c
View File

@ -1119,7 +1119,7 @@ static void iwlagn_mac_flush(struct ieee80211_hw *hw, u32 queues, bool drop)
}
}
IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
iwl_trans_wait_tx_queue_empty(priv->trans);
iwl_trans_wait_tx_queue_empty(priv->trans, 0xffffffff);
done:
mutex_unlock(&priv->mutex);
IWL_DEBUG_MAC80211(priv, "leave\n");

10
drivers/net/wireless/iwlwifi/iwl-trans.h
View File

@ -437,8 +437,7 @@ struct iwl_trans;
* this one. The op_mode must not configure the HCMD queue. May sleep.
* @txq_disable: de-configure a Tx queue to send AMPDUs
* Must be atomic
* @wait_tx_queue_empty: wait until all tx queues are empty
* May sleep
* @wait_tx_queue_empty: wait until tx queues are empty. May sleep.
* @dbgfs_register: add the dbgfs files under this directory. Files will be
* automatically deleted.
* @write8: write a u8 to a register at offset ofs from the BAR
@ -490,7 +489,7 @@ struct iwl_trans_ops {
void (*txq_disable)(struct iwl_trans *trans, int queue);
int (*dbgfs_register)(struct iwl_trans *trans, struct dentry* dir);
int (*wait_tx_queue_empty)(struct iwl_trans *trans);
int (*wait_tx_queue_empty)(struct iwl_trans *trans, u32 txq_bm);
void (*write8)(struct iwl_trans *trans, u32 ofs, u8 val);
void (*write32)(struct iwl_trans *trans, u32 ofs, u32 val);
@ -759,12 +758,13 @@ static inline void iwl_trans_ac_txq_enable(struct iwl_trans *trans, int queue,
IWL_MAX_TID_COUNT, IWL_FRAME_LIMIT, 0);
}
static inline int iwl_trans_wait_tx_queue_empty(struct iwl_trans *trans)
static inline int iwl_trans_wait_tx_queue_empty(struct iwl_trans *trans,
u32 txq_bm)
{
if (unlikely(trans->state != IWL_TRANS_FW_ALIVE))
IWL_ERR(trans, "%s bad state = %d", __func__, trans->state);
return trans->ops->wait_tx_queue_empty(trans);
return trans->ops->wait_tx_queue_empty(trans, txq_bm);
}
static inline int iwl_trans_dbgfs_register(struct iwl_trans *trans,

6
drivers/net/wireless/iwlwifi/pcie/trans.c
View File

@ -1257,7 +1257,7 @@ static int iwl_trans_pcie_write_mem(struct iwl_trans *trans, u32 addr,
#define IWL_FLUSH_WAIT_MS 2000
static int iwl_trans_pcie_wait_txq_empty(struct iwl_trans *trans)
static int iwl_trans_pcie_wait_txq_empty(struct iwl_trans *trans, u32 txq_bm)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
struct iwl_txq *txq;
@ -1272,6 +1272,10 @@ static int iwl_trans_pcie_wait_txq_empty(struct iwl_trans *trans)
for (cnt = 0; cnt < trans->cfg->base_params->num_of_queues; cnt++) {
if (cnt == trans_pcie->cmd_queue)
continue;
if (!test_bit(cnt, trans_pcie->queue_used))
continue;
if (!(BIT(cnt) & txq_bm))
continue;
txq = &trans_pcie->txq[cnt];
q = &txq->q;
while (q->read_ptr != q->write_ptr && !time_after(jiffies,