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

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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).

Fixes: 6fdb8b8781 ("wifi: cfg80211: Update the default DSCP-to-UP mapping")
Signed-off-by: hhorace <hhoracehsu@gmail.com>
Reviewed-by: Guillaume Nault <gnault@redhat.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://patch.msgid.link/20240807082205.1369-1-hhoracehsu@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
hhorace 2024-08-07 16:22:05 +08:00 committed by Johannes Berg
parent 7c3b69eade
commit a68b22e290
1 changed files with 6 additions and 4 deletions
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10
net/wireless/util.c
View File

@ -998,10 +998,10 @@ 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
* - Signaling: CS5
*/
switch (dscp >> 2) {
case 10:
@ -1026,9 +1026,11 @@ unsigned int cfg80211_classify8021d(struct sk_buff *skb,
/* Broadcasting video: CS3 */
ret = 4;
break;
case 40:
/* Signaling: CS5 */
ret = 5;
case 26:
case 28:
case 30:
/* Multimedia Streaming: AF31, AF32, AF33 */
ret = 4;
break;
case 44:
/* Voice Admit: VA */