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=unavailable 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 283F6C43141 for ; Sat, 16 Nov 2019 16:06:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E7BBF21843 for ; Sat, 16 Nov 2019 16:06:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573920385; bh=3mmOq32V0Wmhic/ngarUJuG2Q8A/YOgyAwDdDnCgk5k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ApYtMBh/WmMQkBUZNsK+Ty3l8ioHGXeP8gpAr1vjEO8L/Vd5uOM4oW2MYr8hJg5/C egFJZfbFX7l/dP2SbMfZjtSW+e4QxNUBgPba0QVAtHnEO0VfXJfEzEyIsKBZfGt2gq nOGtysxuOVkM4l9nqrqdWXl32/aIZ9wlzdLVi3Mk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731160AbfKPQGX (ORCPT ); Sat, 16 Nov 2019 11:06:23 -0500 Received: from mail.kernel.org ([198.145.29.99]:59224 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730635AbfKPPuu (ORCPT ); Sat, 16 Nov 2019 10:50:50 -0500 Received: from sasha-vm.mshome.net (unknown [50.234.116.4]) (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 A7A13214E0; Sat, 16 Nov 2019 15:50:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573919450; bh=3mmOq32V0Wmhic/ngarUJuG2Q8A/YOgyAwDdDnCgk5k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Su4qA54wGzInwGyMgy5YDA5wRYIFfMIHf4aHkyx6tuAdPT8Tz68xM5FrWMsMe0wrX Gwj/hF9T8zygRRJCA4TiyThx0JDIdO9yP5cztipvNYSfYbIKl+I0XY02FS6Sg8bsDn kJwvhYsAQq5wJMlapeV96LH7UfNspSb9yy3TnZPU= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: David Ahern , Donald Sharp , Mike Manning , "David S . Miller" , Sasha Levin , netdev@vger.kernel.org Subject: [PATCH AUTOSEL 4.14 149/150] ipv6: Fix handling of LLA with VRF and sockets bound to VRF Date: Sat, 16 Nov 2019 10:47:27 -0500 Message-Id: <20191116154729.9573-149-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191116154729.9573-1-sashal@kernel.org> References: <20191116154729.9573-1-sashal@kernel.org> MIME-Version: 1.0 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: David Ahern [ Upstream commit c2027d1e17582903e368abf5d4838b22a98f2b7b ] A recent commit allows sockets bound to a VRF to receive ipv6 link local packets. However, it only works for UDP and worse TCP connection attempts to the LLA with the only listener bound to the VRF just hang where as before the client gets a reset and connection refused. Fix by adjusting ir_iif for LL addresses and packets received through a device enslaved to a VRF. Fixes: 6f12fa775530 ("vrf: mark skb for multicast or link-local as enslaved to VRF") Reported-by: Donald Sharp Cc: Mike Manning Signed-off-by: David Ahern Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- net/ipv6/tcp_ipv6.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index 7b4ce3f9e2f4e..5ec73cf386dfe 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -718,6 +718,7 @@ static void tcp_v6_init_req(struct request_sock *req, const struct sock *sk_listener, struct sk_buff *skb) { + bool l3_slave = ipv6_l3mdev_skb(TCP_SKB_CB(skb)->header.h6.flags); struct inet_request_sock *ireq = inet_rsk(req); const struct ipv6_pinfo *np = inet6_sk(sk_listener); @@ -725,7 +726,7 @@ static void tcp_v6_init_req(struct request_sock *req, ireq->ir_v6_loc_addr = ipv6_hdr(skb)->daddr; /* So that link locals have meaning */ - if (!sk_listener->sk_bound_dev_if && + if ((!sk_listener->sk_bound_dev_if || l3_slave) && ipv6_addr_type(&ireq->ir_v6_rmt_addr) & IPV6_ADDR_LINKLOCAL) ireq->ir_iif = tcp_v6_iif(skb); -- 2.20.1