From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pz2-f38.google.com (mail-pz2-f38.google.com [74.125.228.38]) (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 622E03515CD for ; Mon, 21 Sep 2026 04:29:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.228.38 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789964975; cv=none; b=H/yBfpd9+lvcBCIoIQbbJCKd59wR1GWjTTnYAIdnQQmV5FWVkhgq3wtk45p5oO2/kb6wAkMw/X3HMapXISSw5+p6ZlEf3bhzvnk9k7/EhD0xElVW8oaHfxFGvTquXt/l5C6t/kxduevmcmVLl0CmB9h8Yp4L99XUiOoeLdOTiWo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789964975; c=relaxed/simple; bh=EZLcDrNg0p7u3xoE2NaBQYfiA5P6zOjGWIsa0ShloL4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=rw29X2MbYM+nbwh6IiC2+nOxWzauWiDWXArkxHIRknj0xdDx7NIo0qTZZ3SXZy990taTFqjxQ39ygXBew1TgTohCh468Iq2X7pLmLZF+yIfGKyEXfCQjUOuVwldfSJ6bdCfRvbWn2SzF1CUTLredNGM8F5odYA5/mP/3fzvhnuo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=smartx.com; spf=pass smtp.mailfrom=smartx.com; dkim=pass (2048-bit key) header.d=smartx-com.20251104.gappssmtp.com header.i=@smartx-com.20251104.gappssmtp.com header.b=ag0UyYwu; arc=none smtp.client-ip=74.125.228.38 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=smartx.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=smartx.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=smartx-com.20251104.gappssmtp.com header.i=@smartx-com.20251104.gappssmtp.com header.b="ag0UyYwu" Received: by mail-pz2-f38.google.com with SMTP id 41be03b00d2f7-cc1cea4c7a0so1188499a12.1 for ; Sun, 20 Sep 2026 21:29:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=smartx-com.20251104.gappssmtp.com; s=20251104; t=1789964972; x=1790569772; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to:content-type; bh=X+ARZ05U0Ry/4bPhSuYtgrWnaz/OcQpWLrFkKl/prSk=; b=ag0UyYwuzMXRWRrydL2p3etfZ4L4o86Mg19du3tKsa8Ujp7FceO7CVxALCsEJanTM5 p2jXA93qJmD+qmCxeX+7vEtAFlobm2qGoXkAAT+nTXVoZyHzPXArbDFWYIYWqCfciRpn nkJWZ1PzCW3RZ+BER5B6Ql55pUXyDAwLKSJv4c4IPIJv8Exy9KiRERDvftn9a7uwrZx+ HzddLks6gLFo1xFm0BsJ1I3lSITrHDnKbCAhpr0KJSnhC8W1eubWcEg9Z5XlnrWFxOR6 jakSn3ab3yD5MPRfTf17eFHVnJGSiFKSo5Xrsy6YgtWAqwymV5/xl6dkgdugIEmSPOEh LUPA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1789964972; x=1790569772; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to:content-type; bh=X+ARZ05U0Ry/4bPhSuYtgrWnaz/OcQpWLrFkKl/prSk=; b=V33oUkyfJeV3s1vwfVEa2zRkKGYxdKo4TKbqtAi2h2jDVV86GXCU7Ze97g0dMNtg9x RlZl9A7LYA1hXIkEZKymGf92hvewKnWLl2ANh5w8FZECo4XWsqai/2WNtXlXInGdTcON c0WjlTQFPClPnlFr09+99pAsd972g8Kh4WI8JKXeatYlQG5eUWk2O/3tMUKdlWDmwf4x I4g5+9L9K7Jywmxavsa0LQc2SgSRYQcA44AkuGwEd3hHqr9Hm/50JqdwYk+f4/EvegUM Ow5hDDVXH3XXMvPgjI2U49kp4SteCnzer95EJGjWmI1lIWdM/atTShryG4olJsHqmQld xKZw== X-Gm-Message-State: AFuF++k8CDXy4KSaNrWaTJcCeRdn43t68LND0GZ9isCMzyZoMO/CrVUW 1/xlPzN7rAl4p90bBCi2c8C6eSGwDGi/ueMHvg5ZFfJCq7SbiZu4aHFiVy+77Fyj8DmerYh+Dox jkwd+pLLzBYLQQOUTyyz9PZzOlx6aebgG2ocmyDlEZKB+WmIWSOVx/47WN3SdqUirgTRy4QN3Fs 2Gaw== X-Gm-Gg: AYBFou1WI7C4R771KJA6UFvjkJZOj5eaEWkAyCQc5lJBLBcl6aTafJLnSvRzO8jeWDq VRt4qycpqDOEMysT4rfiQtGSogIR5cjpmuHVlgx9E9Vl4rLNvAgfBh3ZU92O7x4fbwQv1BZjVXN Ig+hE/z7DD6A5sITebcXp9eUl4KdwUkKbg641b9fJLnSwb7ba1SNszpLemEBrCzHaSiYIOT45ES cYT8M14csmV+RMT7C9qbpHta9fFmiA6wa0vXiISAe9l3jL6gks2MvmO6dBrl/IKRDE/Yo7GbzG9 8c2AwDdYtVh33fBE6ef26FbzpI28A1ATw+ETqhkV5riphvdEwLbV3esS+1lWswnr4romeb6TmZB EHk2lVF6RVmbDbP8FlSYr0rY9t3sW07xlfP1cDRQa4GU+x5yELWwSG3aMjasyn8XWXtBvFP+lzU AmFp2hLtgHwbZxxoYbKIC6nywY7yZWxHe0iVpRGZkuLPwZrwbMXPQazlOPla6R2y/u18USu9tsX nHjABeJPvk= X-Received: by 2002:a17:90b:4d0d:b0:39e:6c6a:208c with SMTP id 98e67ed59e1d1-39e6c6a31edmr8745588a91.45.1789964971912; Sun, 20 Sep 2026 21:29:31 -0700 (PDT) Received: from localhost.localdomain ([23.148.204.241]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-144da432647sm25579483c88.5.2026.09.20.21.29.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 20 Sep 2026 21:29:31 -0700 (PDT) From: Wang Zhan To: netdev@vger.kernel.org, Zihan Xi Cc: Wang Zhan , davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, horms@kernel.org, steffen.klassert@secunet.com, herbert@gondor.apana.org.au, dsahern@kernel.org, idosch@nvidia.com, willemb@google.com, kuniyu@google.com, kees@kernel.org, richardbgobert@gmail.com, alice.kernel@fastmail.im, gal@nvidia.com, jibin.zhang@mediatek.com, luoxuanqiang@kylinos.cn, linux-kernel@vger.kernel.org, stable@vger.kernel.org, Vega , Luxing Yin Subject: Re: [PATCH net v3 1/1] net: gso: limit recursive IP-in-IP segmentation Date: Mon, 21 Sep 2026 12:29:07 +0800 Message-ID: <20260921042907.3658794-1-wang.zhan@smartx.com> X-Mailer: git-send-email 2.47.3 In-Reply-To: <43510074c063f57e5738ecc55057e7fbbcdb1fbc.1789802623.git.zihanx@nebusec.ai> References: <43510074c063f57e5738ecc55057e7fbbcdb1fbc.1789802623.git.zihanx@nebusec.ai> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit On Sat, 19 Sep 2026 11:14:40 +0000 Zihan Xi wrote: > @@ -19,10 +19,39 @@ struct skb_gso_cb { > int encap_level; > __wsum csum; > __u16 csum_start; > + /* Bytes charged to the current GSO callback chain. */ > + u16 gso_header_len; > }; Hi, I think skb_gso_cb->mac_offset already has enough information to tell whether the budget is exceeded, so adding a field for it is unnecessary.