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Miller" , Sasha Levin Subject: [PATCH AUTOSEL for 4.4 022/101] net: ipv6: send unsolicited NA on admin up Thread-Topic: [PATCH AUTOSEL for 4.4 022/101] net: ipv6: send unsolicited NA on admin up Thread-Index: AQHTtpqHP4d1vfBaOkylbigukQpDXw== Date: Thu, 8 Mar 2018 05:01:33 +0000 Message-ID: <20180308050023.8548-22-alexander.levin@microsoft.com> References: <20180308050023.8548-1-alexander.levin@microsoft.com> In-Reply-To: <20180308050023.8548-1-alexander.levin@microsoft.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [52.168.54.252] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;DM5PR2101MB0727;7:xOwyw2KIVKi1/qS5CVrF3EbamWodJLCuWvVsW3luXXYJFPtP5rxDUpV0lAtrm3iM4oWIaTIVBNfemvDQ0PCxJwaNcTX91w97JGlX9mbfm+v/C9t3vX1dvsLlsm+ysZi1ZFBrum99Pug5Ulek+uVkFeolGQlJDCkgHe81Hz//kevzBBf/HkGaxYMRbpIbVXyZpWuIK5da5Shm5/fcYbR4+984E0deCyQNGGzT9t1n/YN1ImDGwxYsiQJmVK9P+T0e;20:MtIps6vRAVn18R/AB32pU3cIUt2bUM9EM9HUcFyh1oQuULISoFLj729y44Ckn2l9An79X0CNhAhpbGcqKJ8qm95EiZRr5qWAifHD0Rq1lraU/GxorHk/gisVdYytX/1JD1+Ppea8neRVlacTFNwwm/y39MYmnTnNb6p7Pnqlruk= x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: 4d8202e3-1378-4097-4e84-08d584b22d17 x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(48565401081)(5600026)(4604075)(3008032)(4534165)(4627221)(201703031133081)(201702281549075)(2017052603328)(7193020);SRVR:DM5PR2101MB0727; x-ms-traffictypediagnostic: DM5PR2101MB0727: authentication-results: spf=none (sender IP is ) smtp.mailfrom=Alexander.Levin@microsoft.com; x-microsoft-antispam-prvs: x-exchange-antispam-report-test: UriScan:(28532068793085)(89211679590171); x-exchange-antispam-report-cfa-test: BCL:0;PCL:0;RULEID:(8211001083)(61425038)(6040501)(2401047)(5005006)(8121501046)(3002001)(10201501046)(3231220)(944501244)(52105095)(93006095)(93001095)(6055026)(61426038)(61427038)(6041288)(20161123562045)(201703131423095)(201702281528075)(20161123555045)(201703061421075)(201703061406153)(20161123560045)(20161123558120)(20161123564045)(6072148)(201708071742011);SRVR:DM5PR2101MB0727;BCL:0;PCL:0;RULEID:;SRVR:DM5PR2101MB0727; x-forefront-prvs: 060503E79B x-forefront-antispam-report: SFV:NSPM;SFS:(10019020)(39860400002)(39380400002)(396003)(366004)(376002)(346002)(199004)(189003)(81156014)(4326008)(97736004)(105586002)(2906002)(6666003)(8676002)(26005)(10290500003)(76176011)(186003)(110136005)(22452003)(7736002)(54906003)(25786009)(2950100002)(3280700002)(305945005)(81166006)(2900100001)(8936002)(102836004)(6506007)(68736007)(106356001)(10090500001)(1076002)(6512007)(86362001)(3846002)(2501003)(14454004)(478600001)(99286004)(72206003)(6116002)(3660700001)(5250100002)(53936002)(107886003)(6436002)(5660300001)(316002)(6486002)(36756003)(86612001)(66066001)(22906009)(217873001);DIR:OUT;SFP:1102;SCL:1;SRVR:DM5PR2101MB0727;H:DM5PR2101MB1032.namprd21.prod.outlook.com;FPR:;SPF:None;PTR:InfoNoRecords;A:1;MX:1;LANG:en; x-microsoft-antispam-message-info: YvBr5uzhutMEcYXQ1q0wi+iPHZ5nQWMf323BzVFpTIHhCP37D/Epos+5G0iUm2E9IKvTqF5Ok6vVGOKPFhZ3w4+1k7QuIa8qQhjjC6ABbdRepZsRtkm94QdP/WG1Qnrw8/ZMwHg8hJoLo6LvPOPEO+v6lTttF7ilrfM4T6o4PxBfOeNcQ2af89p2cd3k8qHIgq49twLDZ76jIj/uVJxTkXF6ASsRHHF7n4YX5gUGMpCkprNd8eCvP300op+dEBC7ndvj83rZ1XEHUExzPcvOUQVQ4yHsZA6gGBzt2B+lxjhJkO+gLf6FDLvScZoAEZeHiDCsJ7wQ35ABes9DFirr1g== spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: 4d8202e3-1378-4097-4e84-08d584b22d17 X-MS-Exchange-CrossTenant-originalarrivaltime: 08 Mar 2018 05:01:33.2974 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR2101MB0727 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: From: David Ahern [ Upstream commit 4a6e3c5def13c91adf2acc613837001f09af3baa ] ndisc_notify is the ipv6 equivalent to arp_notify. When arp_notify is set to 1, gratuitous arp requests are sent when the device is brought up. The same is expected when ndisc_notify is set to 1 (per ndisc_notify in Documentation/networking/ip-sysctl.txt). The NA is not sent on NETDEV_UP event; add it. Fixes: 5cb04436eef6 ("ipv6: add knob to send unsolicited ND on link-layer a= ddress change") Signed-off-by: David Ahern Acked-by: Hannes Frederic Sowa Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- net/ipv6/ndisc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c index 84afb9a77278..55810e4899f1 100644 --- a/net/ipv6/ndisc.c +++ b/net/ipv6/ndisc.c @@ -1686,6 +1686,8 @@ static int ndisc_netdev_event(struct notifier_block *= this, unsigned long event, case NETDEV_CHANGEADDR: neigh_changeaddr(&nd_tbl, dev); fib6_run_gc(0, net, false); + /* fallthrough */ + case NETDEV_UP: idev =3D in6_dev_get(dev); if (!idev) break; --=20 2.14.1