From 5595870f77c7f9de3481b0c0d5ad03176586556e Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@nbd.name>
Date: Wed, 16 Sep 2020 18:46:11 +0200
Subject: [PATCH] mac80211: allow bigger A-MSDU sizes in VHT, even if HT is
limited
Some APs (e.g. Asus RT-AC88U) have been observed to report an HT MSDU size
limit of 3839 and a VHT limit of 7991. These APs can handle bigger frames
than 3839 bytes just fine, so we should remove the VHT limit based on the
HT capabilities. This improves tx throughput.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20200916164611.8022-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
net/mac80211/vht.c | 4 ----
1 file changed, 4 deletions(-)
diff --git a/net/mac80211/vht.c b/net/mac80211/vht.c
index 9c6045f9c24da..7e601d067d53c 100644
--- a/net/mac80211/vht.c
+++ b/net/mac80211/vht.c
@@ -315,10 +315,6 @@ ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
sta->sta.bandwidth = ieee80211_sta_cur_vht_bw(sta);
- /* If HT IE reported 3839 bytes only, stay with that size. */
- if (sta->sta.max_amsdu_len == IEEE80211_MAX_MPDU_LEN_HT_3839)
- return;
-
switch (vht_cap->cap & IEEE80211_VHT_CAP_MAX_MPDU_MASK) {
case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454:
sta->sta.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_11454;
--
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