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authorBenjamin Berg <benjamin.berg@intel.com>2025-03-11 14:17:04 +0300
committerJohannes Berg <johannes.berg@intel.com>2025-03-12 11:29:14 +0300
commit8ae227f8a7749eec92fc381dfbe213429c852278 (patch)
tree3dfce491887d630a3bd877486998dd4f9c2bf409
parent72d520476a2fab6f3489e8388ab524985d6c4b90 (diff)
downloadlinux-8ae227f8a7749eec92fc381dfbe213429c852278.tar.xz
wifi: mac80211: fix MPDU length parsing for EHT 5/6 GHz
The MPDU length is only configured using the EHT capabilities element on 2.4 GHz. On 5/6 GHz it is configured using the VHT or HE capabilities respectively. Fixes: cf0079279727 ("wifi: mac80211: parse A-MSDU len from EHT capabilities") Reviewed-by: Miriam Rachel Korenblit <miriam.rachel.korenblit@intel.com> Signed-off-by: Benjamin Berg <benjamin.berg@intel.com> Link: https://patch.msgid.link/20250311121704.0634d31f0883.I28063e4d3ef7d296b7e8a1c303460346a30bf09c@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
-rw-r--r--net/mac80211/eht.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/net/mac80211/eht.c b/net/mac80211/eht.c
index 7a3116c36df9..fd41046e3b68 100644
--- a/net/mac80211/eht.c
+++ b/net/mac80211/eht.c
@@ -2,7 +2,7 @@
/*
* EHT handling
*
- * Copyright(c) 2021-2024 Intel Corporation
+ * Copyright(c) 2021-2025 Intel Corporation
*/
#include "ieee80211_i.h"
@@ -76,6 +76,13 @@ ieee80211_eht_cap_ie_to_sta_eht_cap(struct ieee80211_sub_if_data *sdata,
link_sta->cur_max_bandwidth = ieee80211_sta_cap_rx_bw(link_sta);
link_sta->pub->bandwidth = ieee80211_sta_cur_vht_bw(link_sta);
+ /*
+ * The MPDU length bits are reserved on all but 2.4 GHz and get set via
+ * VHT (5 GHz) or HE (6 GHz) capabilities.
+ */
+ if (sband->band != NL80211_BAND_2GHZ)
+ return;
+
switch (u8_get_bits(eht_cap->eht_cap_elem.mac_cap_info[0],
IEEE80211_EHT_MAC_CAP0_MAX_MPDU_LEN_MASK)) {
case IEEE80211_EHT_MAC_CAP0_MAX_MPDU_LEN_11454: