From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f178.google.com (mail-pl1-f178.google.com [209.85.214.178]) (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 9C2C9192D97 for ; Sun, 4 Jan 2026 03:23:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.178 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767497004; cv=none; b=DO6YOvh6LtlkE3NDsKn1jeLoFFCyXfg1oYp5YwhCrvnTIolC+OjxNfvPzSGctc/ICRj3lqdkJYK0D9K62ycIVxJPPDx7HX1mDYg47xJiOCVrrnOlM9xpNauJ/jgeCwL9EfWMUjVCXLuAbHl5yknfPw4iBqp8Dc1+a7O/zgYzFb0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767497004; c=relaxed/simple; bh=H7Lp4hlHYKaLNrD6hSx22K2kF/5UZefq0VDM2fZgvew=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=VQMHJ5ZLxaoQHwcIs4g9PIMZVazsYTV07yLkk4T/MRJ9PcERTYfW6BJbIk/ESzSOZgl9jAsOF+KCpVHU4bzhgho4dLnMTT0Wd42zhGPASLhpr5LHd0hA0DOnOZTH/foA8U9qXczLjc/XMWCLuC8rkZKqG90wRqvOWFWoKOjh/0o= 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=DyyvFlxg; arc=none smtp.client-ip=209.85.214.178 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="DyyvFlxg" Received: by mail-pl1-f178.google.com with SMTP id d9443c01a7336-2a110548cdeso176580705ad.0 for ; Sat, 03 Jan 2026 19:23:22 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1767497002; x=1768101802; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=I84VtQc9KkyspRiC2X9X4Oiyff91gGOYfJWSeOoC4yY=; b=DyyvFlxghUhBICA5ogPG+ypmRMUp0WAOCnjPFM6Y2gTJZa2PZqONkZv2+/OwVp8qBG TIUZyQa5iHkGfv8BirxzuT7cXMmsYFw9KoeRxEiQr5Fx/bdyrQiUV2GE0z/LNkUcSeIA O7+V7hPn77p5zNXbZfeTQ7Fm8QZ0EmkuKFBkLjaplnwegVRIulqHRDeZU59wp07YhCdV y7oHn+0NjVzuDuFxJi/mI9GQ/RlSDF8VNXSFR1OZFRxgceddopnIjM8K8xhhDXNbcfOx rk5stXrQUjpxXyZEq/bb/FC/2ffrjd5iV0LnnpaTBetIB9omVakDTeRDo9IdwOADhoJV s0nA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1767497002; x=1768101802; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=I84VtQc9KkyspRiC2X9X4Oiyff91gGOYfJWSeOoC4yY=; b=tZX62HgGqY4QgznGFTORjUXhzxNpC9jgGK/R6WhjlCpC3QjTOUIpm3i99ntQC+cmdN DXwreKduxRuAeT81ukRn4RaauVlOBxRa8ffE3WlC8wOZUJzJ1eHuDEd2mtWVeq/iH13F vbST1LnKsT4iv1HIrL/spyu1iHbTwz1DXnPlLRBYh3B0dmfosL7HB8l0IDsV9ZGWhhHp HCgRyQ2K6Lk4Vld6Xge4SZHQJnb52PefOnN+m7sZmN48szlzzwc+huoDhmXsEOnQ+9o2 Dea14lQDxFCYWe7I6Vtl47YLQJIn/uIjGCPW3fCMkrtKN5OECpsz1/5NZQszBkafIw2D bFQQ== X-Forwarded-Encrypted: i=1; AJvYcCVX3t+tJfv9PuUXnEGQiuV0lNEsoXkUjXWEuLQKshqPOOCPIP+LaZt7NT90ZhsPnJ/flNMVn/w=@vger.kernel.org X-Gm-Message-State: AOJu0YyPR7j8o/ZQTPtAC0W3umz7ZHwunzCqIo/blWyQFh0I2kvQIQr3 rm55XoJdGpf0ju4wJgHYaQ95mQCdhZTA8JJiBKdHGWi2Hx0CMhUTkqgV X-Gm-Gg: AY/fxX6AC3kUC3NymEyhu1zmX3Zi+WytWFsXg2/XNw3AAQ9wjA0pdh6KNI3+Ur/Y3NJ MnsaHnCy5LDADwMmDclwQhFB9Y8CVptFOhZRYYM4Dc6TgUAKp9VTABQkAy52Kwq3wIaTnvbEM7s MgJDT6rCxCmSJ1h7ay/QkbtcmZeFQYthdL/nX3wpAdgiLR5UrieSpd1wbrqMM8OifLQJEn/PUZz /xvGJfkUOoCpWt7RYctBU9vdcv6ZSe8f/HFLbNc10ltnAhqufSaNRv334042I3x3XDOkXXvhuR5 OXtdZizH6C51lNaHMDm2NXNf864pT9EbzkKf793njN3OckLKVQJguxTZ7w2tr86kJsM4ELj+J4f pKTHacGVdYoyw7KhIkXD70+EPCBxgYf/vljOJkA0IkT3OOdqtM8hgE2XrMSN/xqqSpJs/P870kd IfL2shh57QkaraboMS0FjOVTRtUF2J3CDzlzshApSpnPSdvqt9/8qMHHhn9MkPQJ/AGwN/ X-Google-Smtp-Source: AGHT+IH+1cbf7PbR9rmOhkZLX547un8Ww+01xAk9sjVgjF9ZNkVhQe+dnO9QBNOQLu57YQwxrNcFEA== X-Received: by 2002:a17:902:c403:b0:297:f527:a38f with SMTP id d9443c01a7336-2a2f2231764mr467489455ad.18.1767497001872; Sat, 03 Jan 2026 19:23:21 -0800 (PST) Received: from KERNELXING-MB0.tencent.com ([43.132.141.21]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2a2f3d6d557sm405852335ad.84.2026.01.03.19.23.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 03 Jan 2026 19:23:21 -0800 (PST) From: Jason Xing To: davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, bjorn@kernel.org, magnus.karlsson@intel.com, maciej.fijalkowski@intel.com, jonathan.lemon@gmail.com, sdf@fomichev.me, ast@kernel.org, daniel@iogearbox.net, hawk@kernel.org, john.fastabend@gmail.com Cc: bpf@vger.kernel.org, netdev@vger.kernel.org, Jason Xing Subject: [PATCH bpf-next v3 0/2] xsk: introduce pre-allocated memory per xsk CQ Date: Sun, 4 Jan 2026 11:23:11 +0800 Message-Id: <20260104032313.76121-1-kerneljasonxing@gmail.com> X-Mailer: git-send-email 2.33.0 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Jason Xing This series was made based on the previous work[1] to fix the issue without causing too much performance impact through adding a pre-allocated memory for each xsk. [1]: commit 30f241fcf52a ("xsk: Fix immature cq descriptor production") --- v3 link: https://lore.kernel.org/all/20251216052623.2697-1-kerneljasonxing@gmail.com/ 1. fix double free of lcq in xsk_clear_local_cq() 2. keep lcq->prod align with cq->cached_prod, which can be found in xsk_cq_cancel_locked(). 3. move xsk_clear_local_cq() from xsk_release() to xsk_destruct() to avoid crash when using lcq in xsk_destruct_skb() after lcq is already freed. v2 link: https://lore.kernel.org/all/20251209085950.96231-1-kerneljasonxing@gmail.com/ 1. add if condition to test if cq is NULL 2. initialize the prod of local_cq Jason Xing (2): xsk: introduce local_cq for each af_xdp socket xsk: introduce a dedicated local completion queue for each xsk include/net/xdp_sock.h | 8 ++ net/xdp/xsk.c | 222 +++++++++++++++++++++-------------------- 2 files changed, 122 insertions(+), 108 deletions(-) -- 2.41.3