iwlagn: Support flush queues for specified interface

Flush command can target specified interface or all interfaces

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
index 8bed3ae..99d473f 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
@@ -1530,10 +1530,12 @@
 	might_sleep();
 
 	memset(&flush_cmd, 0, sizeof(flush_cmd));
-	flush_cmd.fifo_control = IWL_SCD_VO_MSK | IWL_SCD_VI_MSK |
+	if (flush_control & BIT(IWL_RXON_CTX_BSS))
+		flush_cmd.fifo_control = IWL_SCD_VO_MSK | IWL_SCD_VI_MSK |
 				 IWL_SCD_BE_MSK | IWL_SCD_BK_MSK |
 				 IWL_SCD_MGMT_MSK;
-	if (priv->valid_contexts != BIT(IWL_RXON_CTX_BSS))
+	if ((flush_control & BIT(IWL_RXON_CTX_PAN)) &&
+	    (priv->valid_contexts != BIT(IWL_RXON_CTX_BSS)))
 		flush_cmd.fifo_control |= IWL_PAN_SCD_VO_MSK |
 				IWL_PAN_SCD_VI_MSK | IWL_PAN_SCD_BE_MSK |
 				IWL_PAN_SCD_BK_MSK | IWL_PAN_SCD_MGMT_MSK |