[PATCH] wifi: cfg80211: fix bug of mapping AF3x to incorrect User Priority

hhorace
2024-08-05T07:18:20Z

According to RFC8325 4.3, Multimedia Streaming: AF31(011010, 26),
AF32(011100, 28), AF33(011110, 30) maps to User Priority = 4
and AC_VI (Video).

However, the original code remain the default three Most Significant
Bits (MSBs) of the DSCP, which makes AF3x map to User Priority = 3
and AC_BE (Best Effort).

Signed-off-by: hhorace <hhoracehsu@gmail.com>
---
net/wireless/util.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/net/wireless/util.c b/net/wireless/util.c
index 082c6f9..4e04618 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -998,7 +998,6 @@ unsigned int cfg80211_classify8021d(struct sk_buff *skb,
* Diffserv Service Classes no update is needed:
* - Standard: DF
* - Low Priority Data: CS1
- * - Multimedia Streaming: AF31, AF32, AF33
* - Multimedia Conferencing: AF41, AF42, AF43
* - Network Control Traffic: CS7
* - Real-Time Interactive: CS4
@@ -1026,6 +1025,12 @@ unsigned int cfg80211_classify8021d(struct sk_buff *skb,
/* Broadcasting video: CS3 */
ret = 4;
break;
+ case 26:
+ case 28:
+ case 30:
+ /* Multimedia Streaming: AF31, AF32, AF33 */
+ ret = 4;
+ break;
case 40:
/* Signaling: CS5 */
ret = 5;
--
2.42.0.windows.2