iwlwifi: add context into tx descriptor

In status processing we'll need to find the context
for a given frame, so add a context pointer to the
TX info for each frame.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>

drivers/net/wireless/iwlwifi/iwl-agn-tx.c

@@ -640,6 +640,7 @@ int iwlagn_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
 	/* Set up driver data for this TFD */
 	memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info));
 	txq->txb[q->write_ptr].skb = skb;
+	txq->txb[q->write_ptr].ctx = ctx;
 
 	/* Set up first empty entry in queue's array of Tx/cmd buffers */
 	out_cmd = txq->cmd[q->write_ptr];

drivers/net/wireless/iwlwifi/iwl-dev.h

@@ -144,6 +144,7 @@ struct iwl_queue {
 /* One for each TFD */
 struct iwl_tx_info {
 	struct sk_buff *skb;
+	struct iwl_rxon_context *ctx;
 };
 
 /**

drivers/net/wireless/iwlwifi/iwl3945-base.c

@@ -544,6 +544,7 @@ static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
 	/* Set up driver data for this TFD */
 	memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info));
 	txq->txb[q->write_ptr].skb = skb;
+	txq->txb[q->write_ptr].ctx = &priv->contexts[IWL_RXON_CTX_BSS];
 
 	/* Init first empty entry in queue's array of Tx/cmd buffers */
 	out_cmd = txq->cmd[idx];