iwlagn: support off-channel TX

Add support to iwlagn for off-channel TX. The
microcode API for this is a bit strange in that
it uses a hacked-up scan command, so the scan
code needs to change quite a bit to accomodate
that and be able to send it out.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 7 insertions, 1 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-commands.h b/drivers/net/wireless/iwlwifi/iwl-commands.h
index 03cfb74da2bc..ca42ffa63ed7 100644
--- a/drivers/net/wireless/iwlwifi/iwl-commands.h
+++ b/drivers/net/wireless/iwlwifi/iwl-commands.h
@@ -2964,9 +2964,15 @@ struct iwl3945_scan_cmd {
         u8 data[0];
 } __packed;
 
+enum iwl_scan_flags {
+        /* BIT(0) currently unused */
+        IWL_SCAN_FLAGS_ACTION_FRAME_TX  = BIT(1),
+        /* bits 2-7 reserved */
+};
+
 struct iwl_scan_cmd {
         __le16 len;
-        u8 reserved0;
+        u8 scan_flags;          /* scan flags: see enum iwl_scan_flags */
         u8 channel_count;       /* # channels in channel list */
         __le16 quiet_time;      /* dwell only this # millisecs on quiet channel
                                  * (only for active scan) */