From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A6F5AC433DF for ; Mon, 29 Jun 2020 21:52:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 83829206A5 for ; Mon, 29 Jun 2020 21:52:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1593467562; bh=VVOg+fL6XpTbAZZVUFGIaPYMxx6lWAAVziHMXpUFrYg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=za35kYwkmnNF64paxFWMDe4lms7pFW8XHvuOod7vomroSiN6RLO94LJJlap20+x1J xmkBquB/UxaW2GDT9K1j89U2ERXss+RVdUXhlKtfX0VWD1FHZ+iupRhD/KC3ssuLQD fkQVr2OJxSfG7A5thkNj+PtpfE35twzlR/4qUYMo= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2391526AbgF2Vwl (ORCPT ); Mon, 29 Jun 2020 17:52:41 -0400 Received: from mail.kernel.org ([198.145.29.99]:56908 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726638AbgF2Sfj (ORCPT ); Mon, 29 Jun 2020 14:35:39 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 3A31D2469C; Mon, 29 Jun 2020 15:19:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1593443994; bh=VVOg+fL6XpTbAZZVUFGIaPYMxx6lWAAVziHMXpUFrYg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=haOG7BQVr1aUs0m4VfDMrLJfjuAaLBO/OJzzI/J/b3wHGfPgJZlzIRbzBHDkAiHj5 q2evblmwnascV/CXF/SllglrXK1CoJGpPS73MqKuOH1MwkPCutA2PkRv6pjSfn8Jvj wm8JUXEBbB0HmffadlT8SPXZRo91OTM2z3rTSYCA= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Huy Nguyen , Boris Pismenny , Raed Salem , Saeed Mahameed , Steffen Klassert , Sasha Levin Subject: [PATCH 5.7 098/265] xfrm: Fix double ESP trailer insertion in IPsec crypto offload. Date: Mon, 29 Jun 2020 11:15:31 -0400 Message-Id: <20200629151818.2493727-99-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200629151818.2493727-1-sashal@kernel.org> References: <20200629151818.2493727-1-sashal@kernel.org> MIME-Version: 1.0 X-KernelTest-Patch: http://kernel.org/pub/linux/kernel/v5.x/stable-review/patch-5.7.7-rc1.gz X-KernelTest-Tree: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git X-KernelTest-Branch: linux-5.7.y X-KernelTest-Patches: git://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git X-KernelTest-Version: 5.7.7-rc1 X-KernelTest-Deadline: 2020-07-01T15:14+00:00 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Huy Nguyen [ Upstream commit 94579ac3f6d0820adc83b5dc5358ead0158101e9 ] During IPsec performance testing, we see bad ICMP checksum. The error packet has duplicated ESP trailer due to double validate_xmit_xfrm calls. The first call is from ip_output, but the packet cannot be sent because netif_xmit_frozen_or_stopped is true and the packet gets dev_requeue_skb. The second call is from NET_TX softirq. However after the first call, the packet already has the ESP trailer. Fix by marking the skb with XFRM_XMIT bit after the packet is handled by validate_xmit_xfrm to avoid duplicate ESP trailer insertion. Fixes: f6e27114a60a ("net: Add a xfrm validate function to validate_xmit_skb") Signed-off-by: Huy Nguyen Reviewed-by: Boris Pismenny Reviewed-by: Raed Salem Reviewed-by: Saeed Mahameed Signed-off-by: Steffen Klassert Signed-off-by: Sasha Levin --- include/net/xfrm.h | 1 + net/xfrm/xfrm_device.c | 4 +++- 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/include/net/xfrm.h b/include/net/xfrm.h index 8f71c111e65af..03024701c79f7 100644 --- a/include/net/xfrm.h +++ b/include/net/xfrm.h @@ -1013,6 +1013,7 @@ struct xfrm_offload { #define XFRM_GRO 32 #define XFRM_ESP_NO_TRAILER 64 #define XFRM_DEV_RESUME 128 +#define XFRM_XMIT 256 __u32 status; #define CRYPTO_SUCCESS 1 diff --git a/net/xfrm/xfrm_device.c b/net/xfrm/xfrm_device.c index f50d1f97cf8ec..626096bd0d294 100644 --- a/net/xfrm/xfrm_device.c +++ b/net/xfrm/xfrm_device.c @@ -108,7 +108,7 @@ struct sk_buff *validate_xmit_xfrm(struct sk_buff *skb, netdev_features_t featur struct xfrm_offload *xo = xfrm_offload(skb); struct sec_path *sp; - if (!xo) + if (!xo || (xo->flags & XFRM_XMIT)) return skb; if (!(features & NETIF_F_HW_ESP)) @@ -129,6 +129,8 @@ struct sk_buff *validate_xmit_xfrm(struct sk_buff *skb, netdev_features_t featur return skb; } + xo->flags |= XFRM_XMIT; + if (skb_is_gso(skb)) { struct net_device *dev = skb->dev; -- 2.25.1