iwlwifi: add sleep_tx_count ucode station API

This field was marked as reserved before since we didn't
use it, but is present in all released firmwares afaict.
We're going to need it soon, so add it now.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

2 files changed, 17 insertions, 2 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-4965.c b/drivers/net/wireless/iwlwifi/iwl-4965.c
index 0efde87b4597..1e58c49dd768 100644
--- a/drivers/net/wireless/iwlwifi/iwl-4965.c
+++ b/drivers/net/wireless/iwlwifi/iwl-4965.c
@@ -1817,6 +1817,7 @@ static u16 iwl4965_build_addsta_hcmd(const struct iwl_addsta_cmd *cmd, u8 *data)
         addsta->add_immediate_ba_tid = cmd->add_immediate_ba_tid;
         addsta->remove_immediate_ba_tid = cmd->remove_immediate_ba_tid;
         addsta->add_immediate_ba_ssn = cmd->add_immediate_ba_ssn;
+        addsta->sleep_tx_count = cmd->sleep_tx_count;
         addsta->reserved1 = cpu_to_le16(0);
         addsta->reserved2 = cpu_to_le32(0);
 
diff --git a/drivers/net/wireless/iwlwifi/iwl-commands.h b/drivers/net/wireless/iwlwifi/iwl-commands.h
index 87a7f2832c53..aa4e38cbf071 100644
--- a/drivers/net/wireless/iwlwifi/iwl-commands.h
+++ b/drivers/net/wireless/iwlwifi/iwl-commands.h
@@ -1107,7 +1107,14 @@ struct iwl4965_addsta_cmd {
          * Set modify_mask bit STA_MODIFY_ADDBA_TID_MSK to use this field. */
         __le16 add_immediate_ba_ssn;
 
-        __le32 reserved2;
+        /*
+         * Number of packets OK to transmit to station even though
+         * it is asleep -- used to synchronise PS-poll and u-APSD
+         * responses while ucode keeps track of STA sleep state.
+         */
+        __le16 sleep_tx_count;
+
+        __le16 reserved2;
 } __attribute__ ((packed));
 
 /* 5000 */
@@ -1138,7 +1145,14 @@ struct iwl_addsta_cmd {
          * Set modify_mask bit STA_MODIFY_ADDBA_TID_MSK to use this field. */
         __le16 add_immediate_ba_ssn;
 
-        __le32 reserved2;
+        /*
+         * Number of packets OK to transmit to station even though
+         * it is asleep -- used to synchronise PS-poll and u-APSD
+         * responses while ucode keeps track of STA sleep state.
+         */
+        __le16 sleep_tx_count;
+
+        __le16 reserved2;
 } __attribute__ ((packed));