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[213.36.7.13]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-43661200abesm597380345e9.18.2025.01.07.06.45.53 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 07 Jan 2025 06:45:53 -0800 (PST) Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Tue, 07 Jan 2025 15:45:52 +0100 Message-Id: Cc: "Steffen Moser" Subject: Re: Potential Broadcast Issues After GTK Key Exchange on ath11k with IPQ8072A (QCN5024/QCN5054) From: "Nicolas Escande" To: , X-Mailer: aerc 0.18.2-0-ge037c095a049 References: In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250107_064556_786327_33138C6B X-CRM114-Status: GOOD ( 24.02 ) X-BeenThere: ath11k@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "ath11k" Errors-To: ath11k-bounces+ath11k=archiver.kernel.org@lists.infradead.org On Sat Dec 28, 2024 at 11:13 AM CET, Steffen Moser wrote: > Dear Remi, > > thank you very much for the pointer to the patch. Sebastian integrated=20 > it into DD-WRT. Now the DynaLink DL-WRX36 runs absolutely smoothly, the= =20 > WLAN links are stable, the packet loss is gone. No weird states anymore,= =20 > independent from the group key exchange interval: > > https://data.saps.uni-ulm.de/index.php/s/NLNpWqjc8iGsaEM > > So your idea was a direct hit! Thank you very, very much. Several months= =20 > of debugging have come to an end... So this is at least the second time this commit breaks a setup. =20 @ath11k why isn't this pushed to mainline ? This seems to be a clear regression, so even if there is no need to rush th= ings in the long run this still needs to to reverted mainline right ? > > Thank you very much and all the best for 2025! > > Kind regards, > Steffen > > On 19.12.24 4:35 PM, Remi Pommarel wrote: > > Hi Steffen. > >=20 > > On Thu, Dec 19, 2024 at 04:02:30PM +0100, Steffen Moser wrote: > >> Hello everyone, > >>=20 > >> I've encountered a possible issue in a DD-WRT [1] setup where broadcas= t > >> packets stop being delivered after a GTK (Group Temporal Key) exchange= . This > >> issue occurs on a system with the following hardware: > >>=20 > >> =C2=A0=C2=A0=C2=A0 Access Point Hardware: DynaLink DL-WRX36 > >> =C2=A0=C2=A0=C2=A0 Router Software: DD-WRT v3.0-r58819 std (12/13/24) > >> =C2=A0=C2=A0=C2=A0 CPU: Qualcomm IPQ8072A > >> =C2=A0=C2=A0=C2=A0 WiFi Chips: Qualcomm QCN5024 and Qualcomm QCN5054 > >> =C2=A0=C2=A0=C2=A0 WiFi Driver: ath11k > >> =C2=A0=C2=A0=C2=A0 Firmware: WLAN.HK.2.12-01460-QCAHKSWPL_SILICONZ-1 > >> =C2=A0=C2=A0=C2=A0 NSS FW version: NSS.FW.12.5-210-HK.R > >> =C2=A0=C2=A0=C2=A0 Kernel: Linux WL-AP-EG 6.6.64-rt29 #1791 SMP Thu De= c 12 16:41:51 +07 > >> 2024 aarch64 DD-WRT > >>=20 > >> The behavior is such that after a GTK exchange, the AP can get into a = "weird > >> state". When being there, broadcast frames like ARP or mDNS are no lon= ger > >> reliably delivered to connected clients while unicasts come still thro= ugh. > >> In this "weird state", the channel quality (active time vs. busy time)= goes > >> down and latencies to the still reachable WIFI clients rise. > >=20 > > This looks a lot like an issue we hit a while back. There is this patch > > [0] from Qualcomm's wlan-open repository. It is a revert of [1]. Using > > that the issue was never reproduced. Maybe this can help. > >=20 > > Also adding ath11k list. > >=20 > > Regards. > >=20