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Mon, 12 Oct 2020 08:38:43 +0000 From: Reji Thomas To: dlebrun@google.com Cc: davem@davemloft.net, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, rejithomas@juniper.net, rejithomas.d@gmail.com Subject: [PATCH SRv6 End.X] Signed-off-by: Reji Thomas Date: Mon, 12 Oct 2020 14:07:49 +0530 Message-Id: <20201012083749.37076-1-rejithomas@juniper.net> X-Mailer: git-send-email 2.20.1 (Apple Git-117) Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [116.197.184.10] X-ClientProxiedBy: MAXPR0101CA0038.INDPRD01.PROD.OUTLOOK.COM (2603:1096:a00:d::24) To BYAPR05MB6709.namprd05.prod.outlook.com (2603:10b6:a03:e3::13) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from rejithomas-mbp.jnpr.net (116.197.184.10) by MAXPR0101CA0038.INDPRD01.PROD.OUTLOOK.COM (2603:1096:a00:d::24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.20.3455.23 via Frontend Transport; Mon, 12 Oct 2020 08:38:40 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-HT: Tenant X-MS-Office365-Filtering-Correlation-Id: 70ce0560-c0d1-4e9d-f93e-08d86e8a3a15 X-MS-TrafficTypeDiagnostic: BYAPR05MB6167: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:6430; 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Currently End.X action doesn't consider the outgoing interface while looking up the nexthop.This breaks packet path functionality while using link local address as the End.X nexthop.The patch fixes this for link local addresses. Signed-off-by: Reji Thomas --- net/ipv6/seg6_local.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/net/ipv6/seg6_local.c b/net/ipv6/seg6_local.c index eba23279912d..26a1c1e3e560 100644 --- a/net/ipv6/seg6_local.c +++ b/net/ipv6/seg6_local.c @@ -246,6 +246,16 @@ static int input_action_end_x(struct sk_buff *skb, struct seg6_local_lwt *slwt) advance_nextseg(srh, &ipv6_hdr(skb)->daddr); + if (ipv6_addr_type(&slwt->nh6) & IPV6_ADDR_LINKLOCAL) { + struct net *net = dev_net(skb->dev); + struct net_device *odev; + + odev = dev_get_by_index_rcu(net, slwt->oif); + if (!odev) + goto drop; + skb->dev = odev; + } + seg6_lookup_nexthop(skb, &slwt->nh6, 0); return dst_input(skb); @@ -566,7 +576,8 @@ static struct seg6_action_desc seg6_action_table[] = { }, { .action = SEG6_LOCAL_ACTION_END_X, - .attrs = (1 << SEG6_LOCAL_NH6), + .attrs = ((1 << SEG6_LOCAL_NH6) | + (1 << SEG6_LOCAL_OIF)), .input = input_action_end_x, }, { -- 2.17.1