From patchwork Mon Jan 13 09:00:36 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xu Wang X-Patchwork-Id: 1222021 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=iscas.ac.cn Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 47x6y23BmYz9sP6 for ; Mon, 13 Jan 2020 20:00:58 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726074AbgAMJAy (ORCPT ); Mon, 13 Jan 2020 04:00:54 -0500 Received: from smtp25.cstnet.cn ([159.226.251.25]:60406 "EHLO cstnet.cn" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725268AbgAMJAy (ORCPT ); Mon, 13 Jan 2020 04:00:54 -0500 Received: from localhost.localdomain (unknown [159.226.5.100]) by APP-05 (Coremail) with SMTP id zQCowACHeIm1MRxe8EVkCQ--.28S3; Mon, 13 Jan 2020 17:00:37 +0800 (CST) From: Xu Wang To: davem@davemloft.net, herbert@gondor.apana.org.au, steffen.klassert@secunet.com Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] xfrm: interface: do not confirm neighbor when do pmtu update Date: Mon, 13 Jan 2020 09:00:36 +0000 Message-Id: <1578906036-20623-1-git-send-email-vulab@iscas.ac.cn> X-Mailer: git-send-email 2.7.4 X-CM-TRANSID: zQCowACHeIm1MRxe8EVkCQ--.28S3 X-Coremail-Antispam: 1UD129KBjvdXoWrZFyDZFyDKrWUKFWUCr18Grg_yoW3Cwc_Wr 1xur4UW3srKF9xC345Ar4xZr1DX34ku3s7ua97Kryjqa40qFZ3AasFqr1xGr47GrWDur1U JF1qqrs8Aw45AjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUb7kYjsxI4VWDJwAYFVCjjxCrM7AC8VAFwI0_Jr0_Gr1l1xkIjI8I 6I8E6xAIw20EY4v20xvaj40_Wr0E3s1l1IIY67AEw4v_Jr0_Jr4l8cAvFVAK0II2c7xJM2 8CjxkF64kEwVA0rcxSw2x7M28EF7xvwVC0I7IYx2IY67AKxVW5JVW7JwA2z4x0Y4vE2Ix0 cI8IcVCY1x0267AKxVWxJVW8Jr1l84ACjcxK6I8E87Iv67AKxVW0oVCq3wA2z4x0Y4vEx4 A2jsIEc7CjxVAFwI0_GcCE3s1le2I262IYc4CY6c8Ij28IcVAaY2xG8wAqx4xG64xvF2IE w4CE5I8CrVC2j2WlYx0E2Ix0cI8IcVAFwI0_JrI_JrylYx0Ex4A2jsIE14v26r1j6r4UMc vjeVCFs4IE7xkEbVWUJVW8JwACjcxG0xvY0x0EwIxGrwCY02Avz4vE14v_GFWl42xK82IY c2Ij64vIr41l4I8I3I0E4IkC6x0Yz7v_Jr0_Gr1lx2IqxVAqx4xG67AKxVWUJVWUGwC20s 026x8GjcxK67AKxVWUGVWUWwC2zVAF1VAY17CE14v26r126r1DMIIYrxkI7VAKI48JMIIF 0xvE2Ix0cI8IcVAFwI0_Jr0_JF4lIxAIcVC0I7IYx2IY6xkF7I0E14v26r1j6r4UMIIF0x vE42xK8VAvwI8IcIk0rVW3JVWrJr1lIxAIcVC2z280aVAFwI0_Jr0_Gr1lIxAIcVC2z280 aVCY1x0267AKxVWUJVW8JbIYCTnIWIevJa73UjIFyTuYvjxUct8nUUUUU X-Originating-IP: [159.226.5.100] X-CM-SenderInfo: pyxotu46lvutnvoduhdfq/1tbiDAIOA1z4isI6AAAAsV Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org When do IPv6 tunnel PMTU update and calls __ip6_rt_update_pmtu() in the end, we should not call dst_confirm_neigh() as there is no two-way communication. Signed-off-by: Xu Wang --- net/xfrm/xfrm_interface.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/xfrm/xfrm_interface.c b/net/xfrm/xfrm_interface.c index 7ac1542..e732637 100644 --- a/net/xfrm/xfrm_interface.c +++ b/net/xfrm/xfrm_interface.c @@ -297,7 +297,7 @@ xfrmi_xmit2(struct sk_buff *skb, struct net_device *dev, struct flowi *fl) mtu = dst_mtu(dst); if (!skb->ignore_df && skb->len > mtu) { - skb_dst_update_pmtu(skb, mtu); + skb_dst_update_pmtu_no_confirm(skb, mtu); if (skb->protocol == htons(ETH_P_IPV6)) { if (mtu < IPV6_MIN_MTU)