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wifi: mt76: mt7925: add 320MHz bandwidth to bss_rlm_tlv

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bss_rlm_tlv() in mt7925_mcu_bss_rlm_tlv() has no case for
NL80211_CHAN_WIDTH_320. When associated to a 320MHz BSS, the switch
falls through to default and sends bw=0 (CMD_CBW_20MHZ) to firmware
via BSS_RLM TLV. Firmware then configures the RX radio for 20MHz
and cannot decode the AP's 320MHz frames, resulting in complete data
path failure at 320MHz.

Add the missing NL80211_CHAN_WIDTH_320 case with CMD_CBW_320MHZ and
center_chan2.

Tested on ASUS RT-BE92U: 320MHz throughput goes from 0 Mbps to
841 Mbps (iperf3 -t30 -P8), PHY 4803 Mbps EHT-MCS11.

Reported-by: 张旭涵 <Loong.0x00@gmail.com>
Closes: https://github.com/openwrt/mt76/issues/927
Tested-by: 张旭涵 <Loong.0x00@gmail.com>
Tested-by: Marcin FM <marcin@lgic.pl>
Tested-by: Cristian-Florin Radoi <radoi.chris@gmail.com>
Tested-by: George Salukvadze <giosal90@gmail.com>
Tested-by: Evgeny Kapusta <3193631@gmail.com>
Tested-by: Samu Toljamo <samu.toljamo@gmail.com>
Tested-by: Ariel Rosenfeld <ariel.rosenfeld.750@gmail.com>
Tested-by: Chapuis Dario <chapuisdario4@gmail.com>
Tested-by: Thibaut François <tibo@humeurlibre.fr>
Reviewed-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Javier Tia <floss@jetm.me>
Link: https://patch.msgid.link/20260425195011.790265-3-sean.wang@kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Javier Tia 2026-04-25 14:49:52 -05:00 committed by Felix Fietkau
parent 9f1accf306
commit efc9a10d1d
1 changed files with 4 additions and 0 deletions
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4
drivers/net/wireless/mediatek/mt76/mt7925/mcu.c
View File

@ -2339,6 +2339,10 @@ void mt7925_mcu_bss_rlm_tlv(struct sk_buff *skb, struct mt76_phy *phy,
case NL80211_CHAN_WIDTH_160:
req->bw = CMD_CBW_160MHZ;
break;
case NL80211_CHAN_WIDTH_320:
req->bw = CMD_CBW_320MHZ;
req->center_chan2 = ieee80211_frequency_to_channel(freq2);
break;
case NL80211_CHAN_WIDTH_5:
req->bw = CMD_CBW_5MHZ;
break;