From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1792682844; b=x2GWCq31KESHdcDpt8dJMpuKU7JCWaWARkFM98CUW4s18bIND/VY38FcpMSP43u5N0rU qIY4x7XGPMs4udHdmsBN3O6rxdXjQeyX9SeYw7V7po2BCTgg4hYbz9rEbptc2JR0VBVTG TKVRLFEvWCOXuwPuOtBDTAOVlxEwOvWHBoRG3kgjfRBP1H2wBvpzkqyilDs6VkrXR4a0d d3imPaArXIyhFkvYltlUDYsY6RQ3a9cA9Wew+dt514h0gbo0JRYroYRp9zaa18PDvunkv IoOZpO7RkrY8epxo8HsKuDw4wO+J/Ixtwak3oLAIeQd95jCejLPrvnJhLQ6lxWtUvFQ== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1792682844; h=Received:DKIM-Signature:Message-ID:From:Subject:Reply-To:To: In-Reply-To:References:Content-Type:Content-Transfer-Encoding:Date; bh=yH8As+NcrjkHp+YkiMZ78rIKFlBcftu/7KRfnzwilYc=; b=hXI7RbUml7uR02qNx1CfBA8Tzfyvnc86p4e9+yadKn5tx+1sviCbfZ0f8ob+qcC5lVQz mPwMCHjSBgAFZJKD1eK26LYh7LgebQ867byQLuoX7sMZc+hJroKp3NT444WLlZZ4buBEf IixSVfh1gbrS98DUJ2+BhmxV/Nrn7CCadhsucU8s5Yo5KFtMDv/MbbGIOnPvwcTjQHN3B 2w/gSGZasda+w/woO+ibsGqzzdW369hY4bQ96b6pKIURfY/7THY7Lf2RhU4xVQQjmOdiO hjQwpN52fsX323kJKXITs81Y4IXqyWHNnn3//GaLqnnR2qSjmNus1b3r2m8sPdqIhVQ== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=U7Oe5sIK; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2B3A2606A319 for ; Thu, 22 Oct 2026 15:27:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=U7Oe5sIK Received: by smtp.kernel.org (Postfix) with ESMTPSA id 94FCD1F01825; Thu, 22 Oct 2026 15:27:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1792682843; bh=yH8As+NcrjkHp+YkiMZ78rIKFlBcftu/7KRfnzwilYc=; h=From:Subject:Reply-To:To:In-Reply-To:References:Date; b=U7Oe5sIK95CDOXgwrEK3+wQL/DPO700DMIIXE0b6h7fXXg/hJSPklcaauika9iEeG ysYXssaDZ5x3UBZ349YgCOzhxz1EGzuIpu5CFss/yxS2zHDEpchKSaFfsnAizs79yT BdtdartYEolhMx83zFJz45nqiH5Pskc2DIJagSSeq9Qj7rLMN3EH01OFPjCKosX8Iy NnX2ZQK8QIeP85zwH3zPZBYvkb6O+7t9rblEj3+nrEtf9cMXLPBI6xz5ULx1AL8WIc M8FndSYfCTAKdSlJRdRNJB+Hf4TiG4cqjH0NViJ/seMfEMyg7VfUWwnqozo2X2hbuY Hxni0C8Sqzedg== Message-ID: From: sashiko-bot@kernel.org Subject: Re: [PATCH net v3] net: mana: Add support to process throttled EQEs Reply-To: sashiko-reviews@lists.linux.dev To: "Sahil Chandna" , linux-rdma@vger.kernel.org In-Reply-To: <20261022145428.323576-1-sahilchandna@linux.microsoft.com> References: <20261022145428.323576-1-sahilchandna@linux.microsoft.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Thu, 22 Oct 2026 15:27:23 +0000 X-Mailing-List: linux-rdma@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list > When an event queue nears full, the hardware coalesces the per-CQ > GDMA_EQE_COMPLETION notifications into a single throttle EQE (type 4) > that carries no cq_id. The driver does not handle this event type, so > it falls through to the default case and is dropped. Any CQ whose > completion notification was replaced by the throttle EQE can remain > unserviced, causing its queue to stall. > The issue was observed internally and following Tx stall logs were > seen: >=20 > 2026-10-03T05:29:01 hv_netvsc eth0: VF slot 0 removed > 2026-10-03T05:29:23 mana 7870:00:00.0 ens1: NETDEV WATCHDOG: CPU: 45: > transmit queue 1 timed out 15133 ms > 2026-10-03T05:31:05 mana 7870:00:00.0: HWC: Request timed out: 60000 ms > 2026-10-03T05:31:05 mana 7870:00:00.0: Gf stats wk handler: gf stats > query timed out. > [ ... ] > EQEs count. >=20 > Fixes: ca9c54d2d6a5 ("net: mana: Add a driver for Microsoft Azure Network= Adapter (MANA)") > Cc: stable@vger.kernel.org > Signed-off-by: Sahil Chandna Sashiko has reviewed this patch and found no issues. --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/20261022145428.3235= 76-1-sahilchandna@linux.microsoft.com?part=3D1