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@@ -0,0 +1,36 @@
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+From: Ping-Ke Shih <[email protected]>
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+Date: Mon, 3 Jan 2022 09:36:21 +0800
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+Subject: [PATCH] mac80211: allow non-standard VHT MCS-10/11
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+
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+Some AP can possibly try non-standard VHT rate and mac80211 warns and drops
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+packets, and leads low TCP throughput.
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+
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+ Rate marked as a VHT rate but data is invalid: MCS: 10, NSS: 2
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+ WARNING: CPU: 1 PID: 7817 at net/mac80211/rx.c:4856 ieee80211_rx_list+0x223/0x2f0 [mac8021
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+
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+Since commit c27aa56a72b8 ("cfg80211: add VHT rate entries for MCS-10 and MCS-11")
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+has added, mac80211 adds this support as well.
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+
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+After this patch, throughput is good and iw can get the bitrate:
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+ rx bitrate: 975.1 MBit/s VHT-MCS 10 80MHz short GI VHT-NSS 2
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+or
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+ rx bitrate: 1083.3 MBit/s VHT-MCS 11 80MHz short GI VHT-NSS 2
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+
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+Buglink: https://bugzilla.suse.com/show_bug.cgi?id=1192891
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+Reported-by: Goldwyn Rodrigues <[email protected]>
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+Signed-off-by: Ping-Ke Shih <[email protected]>
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+Link: https://lore.kernel.org/r/[email protected]
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+Signed-off-by: Johannes Berg <[email protected]>
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+---
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+
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+--- a/net/mac80211/rx.c
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++++ b/net/mac80211/rx.c
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+@@ -4945,7 +4945,7 @@ void ieee80211_rx_list(struct ieee80211_
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+ goto drop;
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+ break;
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+ case RX_ENC_VHT:
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+- if (WARN_ONCE(status->rate_idx > 9 ||
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++ if (WARN_ONCE(status->rate_idx > 11 ||
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+ !status->nss ||
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+ status->nss > 8,
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+ "Rate marked as a VHT rate but data is invalid: MCS: %d, NSS: %d\n",
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Felix Fietkau