From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-dy1-f179.google.com (mail-dy1-f179.google.com [74.125.82.179]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 55FF43B0AE5 for ; Tue, 10 Mar 2026 21:59:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.82.179 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773179958; cv=none; b=o1lcWRP0FFsJBBJkevKI8SY6D+KVcQPlnwsu/oFGwM+PzLzHRPkmTPgWgoUYC1puC2obEgmHbhoj/A7dx3VQI3LO2uASvJNP+0WgMtLzDRbQQbMSKOW9VlmITzXhjehbwg96507t536JSFnFwJ9BVMK377UlEAd0R1UAohwYKbw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773179958; c=relaxed/simple; bh=hKdyWhRhCAkbG7E8ZHtWFXqtf4Qe/ei7hy67peNpqNA=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=N2id2MU5vfTfRalimnhc8Rd1SlSvI435F143jwH/zJQ0LXdzwy1CUkZYMXh8th9h6EqG91kZss0mTC8OPWR8ueMpc+sTWonAW1a/49xgSDZVj2DMaIJwIiDRsSCGo04yID08FFuHLos9Z9MndTuI+AH+TMEVQkxe0lV3KRr16fo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=RvDF5ORZ; arc=none smtp.client-ip=74.125.82.179 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="RvDF5ORZ" Received: by mail-dy1-f179.google.com with SMTP id 5a478bee46e88-2bdfd129c52so9580861eec.0 for ; Tue, 10 Mar 2026 14:59:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1773179956; x=1773784756; darn=vger.kernel.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=NxyfcB33GE/k1PDLeg6Kuo4n34bpOdFO2uouX6LZt2I=; b=RvDF5ORZAKOWIxiwK6acc9j8Dh4MUwMf+1NvO0RNN9pRVlkmN3UZf9vB/eGSrIbYlK SruJKycc7VFyJc+oytiQdctvc9CVCzSmSay4xypOlNFJGIDZWm/1jnZluSdaFpswhe7r akdFAMYmC+RZ28viNco2b7Whjg/Q8u+cjpuxXZh0siVCg+MIoxxrg9nsloFY/7O7YbSu gstyfXH//+OPhEbh2/t2XfPSqLp76OzpsCSCLzMNCWAC7XO7iRDwPaIf7MT6iE7c+Mpq Mn4C/DT5RTnVKjcyo8egwa5GMg1jXcKOocs01tMnfS/neffylrbVOipKkQgc/j8wffNs LDUw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1773179956; x=1773784756; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-gg:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=NxyfcB33GE/k1PDLeg6Kuo4n34bpOdFO2uouX6LZt2I=; b=j61Kw8AT5WLgOB7dXBxAblH08SxruPNNBrWhfvxSMYk/1i6cm4OKJMvrPNLJMsUQtf RWB7At/Kzi0fQ8R20VdJOgQI4ctFg0DQLS9DYflmZmXw2qQ//Jd4KWzciCL4DxP0hEwN SvJo7LfrsIBicW4zOgVE+hvFqbh3UwO9bfQJUeSlT9fKukBnepz5MMPdGnvVt+ki1/Wp tjNQy0U8iEy+Vq96sPjD9x8h+eIKUaDkw9BCgXSHMv+pLckSz4PCH7qdpCQFyGseWICZ hjUIKdkNMNQ7nrt0bz1F9UbFRQ3Da6aJM+Mt9RM8ywP9BGsc5JU3mhYBOU4Yspl68OUk N+IA== X-Gm-Message-State: AOJu0YzVd1mHHpDuUajsUP+lbgZnBTI69Y6CrrAS/g/U03x9yi5JzPPB aFUpKaG0aL5wWZ6n9XEbg9OYrVlDc8bw1009IeexjUG4DkFjS4lcuKs= X-Gm-Gg: ATEYQzz9dAzwc/7a/Q8KxDTBpj5w1w0QZ1YnoW+ov3LByrgBQF4fpyfY3udBm62XUsB dawX1klm35qyfE61ENURJbUd5qBilIVQJ4NCeM9RuhBw4ue0NHFhxVSEJ3wgsyAdz8zkCdtvZp7 dBwa19BOHMFrHDrWJLuh5eY3LFkX+tOw47VsGnntd+jVy4D5HE9iy7kK48udsdnTV2NJ2SAB6Q1 GYobsEYgzwpzPkGOhoPV+0SBJAKg7xEQLaWP18qwf5us5akdNmh/6OLKzQB1QlJFYge4oJhOtor 29GfT4YNlj4eCV5zBQS7jVcOX5jJLgyrF7Bnn7hIQz7QvTZ3silo51+L1UFf2WXxNIF0TM+7Ctc rOFMr9OhHiMsQwqVVK68u9VX3Zj3GbWtCmBhorlKlxaLHOYThJAIrz3M0ntE2UOmmwlnbJBpSSW EIU4Tkjk7yENc+39lpsuSNP+7aIUzQZ4L6e59Dd86gxJ27hNGBXltEKYs9T3v2OLno0B4eXbPgT WpQOcOXf+lgr+2kAQZ2NONdYUAp X-Received: by 2002:a05:7301:2f88:b0:2bd:cbc7:16e2 with SMTP id 5a478bee46e88-2be8a272742mr100548eec.13.1773179956335; Tue, 10 Mar 2026 14:59:16 -0700 (PDT) Received: from localhost (c-76-102-12-149.hsd1.ca.comcast.net. [76.102.12.149]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-2be8aa6a15asm127327eec.23.2026.03.10.14.59.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 10 Mar 2026 14:59:15 -0700 (PDT) Date: Tue, 10 Mar 2026 14:59:14 -0700 From: Stanislav Fomichev To: Maciej Fijalkowski Cc: netdev@vger.kernel.org, bpf@vger.kernel.org, magnus.karlsson@intel.com, kuba@kernel.org, pabeni@redhat.com, horms@kernel.org Subject: Re: [PATCH net-next] xsk: use __xsk_rcv_zc_safe for ZC multi-buffer Rx processing Message-ID: References: <20260310133024.422464-1-maciej.fijalkowski@intel.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20260310133024.422464-1-maciej.fijalkowski@intel.com> On 03/10, Maciej Fijalkowski wrote: > Commit f620af11c27b ("xsk: avoid double checking against rx queue being > full") addressed a case in copy mode, when working with multi-buffer > xdp_buff, where we were peeking onto XSK Rx queue twice, to find out if > there is a space to produce descriptors. > > Adjust ZC path to follow the same principle. > > Signed-off-by: Maciej Fijalkowski Acked-by: Stanislav Fomichev (build bot seems to be confused because f620af11c27b went via bpf-next?)