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37 lines
1.4 KiB
Diff
37 lines
1.4 KiB
Diff
From: Ping-Ke Shih <pkshih@realtek.com>
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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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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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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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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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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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Buglink: https://bugzilla.suse.com/show_bug.cgi?id=1192891
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Reported-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
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Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
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Link: https://lore.kernel.org/r/20220103013623.17052-1-pkshih@realtek.com
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Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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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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