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iwlagn: add an API to free the TX context

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Tx free functions move to the transport layer. Unify the functions that deal with tx queues and cmd queue.

Since the CMD queue is not fully allocated, but uses the q->n_bd / q->window trick, the release flow of TX queue and CMD queue was different.
iwlagn_txq_free_tfd receives now the index of the TFD to be freed, which allows to unify the release flow for all the queues.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Emmanuel Grumbach 2011-07-08 08:46:10 -07:00 • committed by John W. Linville
parent afaf6b5742
commit 1359ca4f30
8 changed files with 95 additions and 148 deletions
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3
drivers/net/wireless/iwlwifi/iwl-dev.h
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@ -1233,11 +1233,14 @@ struct iwl_trans;
* @rx_init: inits the rx memory, allocate it if needed
* @rx_free: frees the rx memory
* @tx_init:inits the tx memory, allocate if needed
* @tx_free: frees the tx memory
*/
struct iwl_trans_ops {
int (*rx_init)(struct iwl_priv *priv);
void (*rx_free)(struct iwl_priv *priv);
int (*tx_init)(struct iwl_priv *priv);
void (*tx_free)(struct iwl_priv *priv);
};
struct iwl_trans {