iwlagn: reclaim the packets in transport layer
The reclaim flow is really transport related. Define a simple API to allow the
upper layer to request from the transport layer to reclaim packets until an
index written in the Tx response / BA notification.
The transport layer prepares a list of the packets that are being freed and
passes this list to the upper layer.
Between the two layers, the CB of the skb is used to pass a pointer to the
context (BSS / PAN) in which the skb was sent.
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>
diff --git a/drivers/net/wireless/iwlwifi/iwl-trans.h b/drivers/net/wireless/iwlwifi/iwl-trans.h
index b4c7166..519ad91 100644
--- a/drivers/net/wireless/iwlwifi/iwl-trans.h
+++ b/drivers/net/wireless/iwlwifi/iwl-trans.h
@@ -90,6 +90,7 @@
* @send_cmd_pdu:send a host command: flags can be CMD_*
* @get_tx_cmd: returns a pointer to a new Tx cmd for the upper layer use
* @tx: send an skb
+ * @reclaim: free packet until ssn. Returns a list of freed packets.
* @txq_agg_setup: setup a tx queue for AMPDU - will be called once the HW is
* ready and a successful ADDBA response has been received.
* @txq_agg_disable: de-configure a Tx queue to send AMPDUs
@@ -123,6 +124,8 @@
int (*tx)(struct iwl_priv *priv, struct sk_buff *skb,
struct iwl_tx_cmd *tx_cmd, int txq_id, __le16 fc, bool ampdu,
struct iwl_rxon_context *ctx);
+ void (*reclaim)(struct iwl_trans *trans, int txq_id, int ssn,
+ u32 status, struct sk_buff_head *skbs);
int (*txq_agg_disable)(struct iwl_priv *priv, u16 txq_id,
u16 ssn_idx, u8 tx_fifo);
@@ -213,6 +216,13 @@
return trans->ops->tx(priv(trans), skb, tx_cmd, txq_id, fc, ampdu, ctx);
}
+static inline void iwl_trans_reclaim(struct iwl_trans *trans, int txq_id,
+ int ssn, u32 status,
+ struct sk_buff_head *skbs)
+{
+ trans->ops->reclaim(trans, txq_id, ssn, status, skbs);
+}
+
static inline int iwl_trans_txq_agg_disable(struct iwl_trans *trans, u16 txq_id,
u16 ssn_idx, u8 tx_fifo)
{