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=-6.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS 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 67A74C48BD4 for ; Tue, 25 Jun 2019 10:11:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3C5A020644 for ; Tue, 25 Jun 2019 10:11:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729995AbfFYKLj (ORCPT ); Tue, 25 Jun 2019 06:11:39 -0400 Received: from mx1.redhat.com ([209.132.183.28]:40314 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728766AbfFYKLi (ORCPT ); Tue, 25 Jun 2019 06:11:38 -0400 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 02540308FED2; Tue, 25 Jun 2019 10:11:38 +0000 (UTC) Received: from hog.localdomain, (ovpn-204-41.brq.redhat.com [10.40.204.41]) by smtp.corp.redhat.com (Postfix) with ESMTP id E0FBF60BE5; Tue, 25 Jun 2019 10:11:36 +0000 (UTC) From: Sabrina Dubroca To: netdev@vger.kernel.org Cc: Herbert Xu , Steffen Klassert , Sabrina Dubroca Subject: [PATCH RFC ipsec-next 4/7] xfrm: add route lookup to xfrm4_rcv_encap Date: Tue, 25 Jun 2019 12:11:37 +0200 Message-Id: <7d1744b53acf3dd776fb774be58863b1d95fb0ba.1561457281.git.sd@queasysnail.net> In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.49]); Tue, 25 Jun 2019 10:11:38 +0000 (UTC) Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org At this point, with TCP encapsulation, the dst may be gone, but xfrm_input needs one. Signed-off-by: Sabrina Dubroca --- net/ipv4/xfrm4_protocol.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/net/ipv4/xfrm4_protocol.c b/net/ipv4/xfrm4_protocol.c index bcab48944c15..1665e1a05ec5 100644 --- a/net/ipv4/xfrm4_protocol.c +++ b/net/ipv4/xfrm4_protocol.c @@ -76,6 +76,14 @@ int xfrm4_rcv_encap(struct sk_buff *skb, int nexthdr, __be32 spi, if (!head) goto out; + if (!skb_dst(skb)) { + const struct iphdr *iph = ip_hdr(skb); + + if (ip_route_input_noref(skb, iph->daddr, iph->saddr, + iph->tos, skb->dev)) + goto drop; + } + for_each_protocol_rcu(*head, handler) if ((ret = handler->input_handler(skb, nexthdr, spi, encap_type)) != -EINVAL) return ret; @@ -83,6 +91,7 @@ int xfrm4_rcv_encap(struct sk_buff *skb, int nexthdr, __be32 spi, out: icmp_send(skb, ICMP_DEST_UNREACH, ICMP_PORT_UNREACH, 0); +drop: kfree_skb(skb); return 0; } -- 2.22.0