[PATCH v2 8/8] wifi: brcmsmac: ampdu: clarify standard compliance on QoS change

[Shivesh <chanelshivesh@gmail.com>]

From: Shivesh <chanelshivesh@gmail.com>

Updates XXX comment to properly reference IEEE 802.11n requirements
that all MPDUs in an A-MPDU must share the same TID.

Signed-off-by: Shivesh <chanelshivesh@gmail.com>
---
 .../net/wireless/broadcom/brcm80211/brcmsmac/ampdu.c  | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/ampdu.c b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/ampdu.c
index fc7a5dd2e5d8..3fd8bdbd35e5 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/ampdu.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/ampdu.c
@@ -516,12 +516,11 @@ int brcms_c_ampdu_add_frame(struct brcms_ampdu_session *session,
 			return -ENOSPC;
 
 		/*
-		 * We aren't really out of space if the new frame is of
-		 * a different priority, but we want the same behaviour
-		 * so return -ENOSPC anyway.
-		 *
-		 * XXX: The old AMPDU code did this, but is it really
-		 * necessary?
+		 * IEEE 802.11n standard requires that all MPDUs within an
+		 * A-MPDU belong to the same TID (Traffic Identifier).
+		 * Since priority maps to TID, a different priority means
+		 * we must close the current aggregate and start a new one,
+		 * so we return -ENOSPC here.
 		 */
 		first = skb_peek(&session->skb_list);
 		if (p->priority != first->priority)
-- 
2.53.0