From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f172.google.com (mail-pl1-f172.google.com [209.85.214.172]) (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 B3D611EA7DF for ; Sun, 4 Jan 2026 03:23:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767497004; cv=none; b=TnzKIf3vlDke+4qhJs2zITZlImHXo80pXPgc3N2s1ZGJESrvq3dfZJRlypYkFF6I21qfZ64jpnWSAaCi+x0HKq/cAdiD3S4m+zo+LF63Y+dgGM5LU0tYUn28wIP7W2kZXrz1uWuUOtT73R60dn8GCaqIF/hCmuuBPN4Xx3rRChs= 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=209.85.214.172 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-f172.google.com with SMTP id d9443c01a7336-2a0fe77d141so148937415ad.1 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=Xab+ik1hDNI9nYtk2KTcQTclulLn20RVZjHLNK1kijiY2EofPzIPqGkb4qwk4OayIE V1LyrbcbSywH5VwLQAp8WDUluedLDFgTWJut8jnvIJHslkSCZIT/K/6eiA6orKCfBj24 edrWcauiqGLlWsIjtawCUPXt4/8f0owJ4Bpwvj9dt4HHbci5mPMWEmRlCaqZb1AOvjfj x8yklIlkmQmX+jTaTaLHXQLYmjXnvYNeQWFBLeQXGmChdIycwuXquYxBN3KJpvocilZI niAcM/RBgzKEGytxOIVmbLfRZF8qpEV0uI0sPRKjoXaSt7L384UaRhXHVOMUq3KtFROr mK8w== X-Gm-Message-State: AOJu0YxYu6DoM9lqVETgJ26xtdo4LQZAIbKqSg/f0YFUExhDTY0sHatx nAVCSPsxdOwBPFEr/A6tl92MYA0xHEy6umAT0iO2gQJ79grfMOAzNzr9 X-Gm-Gg: AY/fxX6fJq8P6QsECHPuoRlVucKR6rqs8UZ/1tgfhpPnQmDdxeXC1OIFb9lfpKwQPoj i7NJzfOf2lwMhB9Mlr9bCprxFV9fSVMuO2wLZ0vt6vG4raXdj0GXuaXKDDMxJIi+VItdspafUH2 n97N8apY0yCrTsYTSVZVtcrdrlq1yZMypNcXG70b4O1zLxaQHhpZuWQKTi3Xo4dK3eXXlvdMy/f VYnrTrPwjswd8sZXBV36vfhkR84DPkCGIyi9YSzGwnmq6tdU6NbahTdHaLVkmBtjsuGAJWiLuE2 Z1hSBUXjVvDl9LrYrUo85+16Gw8I7hrgqXdtOT/Wtx62DW8i1sTbcguLySerhcPV67Aq/lGomNE lgAIq8lnu7686SKqNaU5GRwe2z8CaI4Wzf3PZWbpDfAZ8d4uYOMaKZUu6sVeO5RlS+esTHkzu/y 5EJ+sC6zOyVNZag4rR5UJ7wy0xRwFJEGssRn2nR6kBmpVd5TXG+FkjAZMYqXB5cHmzEOwI 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: bpf@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