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Miller" , Sasha Levin Subject: [PATCH AUTOSEL for 4.9 038/190] net: ipv6: send unsolicited NA on admin up Thread-Topic: [PATCH AUTOSEL for 4.9 038/190] net: ipv6: send unsolicited NA on admin up Thread-Index: AQHTtpowPAjT+SaZaUCzC85ouzFCuA== Date: Thu, 8 Mar 2018 04:59:08 +0000 Message-ID: <20180308045810.8041-38-alexander.levin@microsoft.com> References: <20180308045810.8041-1-alexander.levin@microsoft.com> In-Reply-To: <20180308045810.8041-1-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;DM5PR2101MB1112;7:jbKaKZjg6R4qEOFIWQEIqYeXtEhiVEpHVt0tV4o+coowpGDoZm3DClna+O5rX1NKkxELSWm4HQS2H8ASdBIyJy7qjHj5liDYrx7cMqD3OCD/08T0hU1/gqQumsHZDFBp1Y7jf933SHaAJ+JJT2Rs8o0hhSnnZxCkdU+zkPOIfuH0e3CUIY+IBg5am0iLCHCtE6TnjKKSv2zw/jyR872/QAWEgV4lkuu0ht3Y5r/NKzylvk5HpTEwJc43L/zl8yf2;20:SvtZoWFiG67VeoZHQUHbprAMxjOoBc05GXo84/Z3EoQwb3BYdItzp2L9KaQO/TPy5K+UFdQmEmzie2Za3HdTKSSvm+0BRExFvP2AAYqYAgfS8S4QNpBqqlVGI3BkuTu3eHV2Vut2uIV5q0+alEUwxYEDRmJZVe7/RMZ2H+Gos1c= x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: 3011f326-b494-41e4-28f9-08d584b18988 x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(48565401081)(5600026)(4604075)(3008032)(4534165)(4627221)(201703031133081)(201702281549075)(2017052603328)(7193020);SRVR:DM5PR2101MB1112; x-ms-traffictypediagnostic: DM5PR2101MB1112: 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)(8121501046)(5005006)(93006095)(93001095)(3231220)(944501244)(52105095)(10201501046)(3002001)(6055026)(61426038)(61427038)(6041288)(20161123562045)(20161123558120)(201703131423095)(201702281528075)(20161123555045)(201703061421075)(201703061406153)(20161123564045)(20161123560045)(6072148)(201708071742011);SRVR:DM5PR2101MB1112;BCL:0;PCL:0;RULEID:;SRVR:DM5PR2101MB1112; x-forefront-prvs: 060503E79B x-forefront-antispam-report: SFV:NSPM;SFS:(10019020)(39860400002)(346002)(376002)(39380400002)(366004)(396003)(189003)(199004)(54906003)(81156014)(7736002)(86612001)(25786009)(81166006)(6512007)(6486002)(4326008)(3846002)(1076002)(6436002)(36756003)(305945005)(6116002)(8936002)(2900100001)(6666003)(97736004)(66066001)(2950100002)(105586002)(68736007)(14454004)(72206003)(3660700001)(478600001)(10290500003)(3280700002)(53936002)(106356001)(10090500001)(5660300001)(102836004)(107886003)(316002)(110136005)(22452003)(86362001)(2501003)(5250100002)(6506007)(76176011)(99286004)(2906002)(26005)(186003)(8676002)(22906009)(217873001);DIR:OUT;SFP:1102;SCL:1;SRVR:DM5PR2101MB1112;H:DM5PR2101MB1032.namprd21.prod.outlook.com;FPR:;SPF:None;PTR:InfoNoRecords;MX:1;A:1;LANG:en; x-microsoft-antispam-message-info: AoYSpJqSCeDrIE1QM+N7XHTVw7sNIpju48wDI5eqw2q874Gm/YbzKsckj3efA4wjsaX83DfddnKdoxUN/WWru08NWb90OZqemQF0c9lwfshrBxUzRLRjhanqw+GBatN/nMfOPAgsCzV5vIWQ62PPVe+9ncWzkgFJRA219xUijC8FuaVkyJGr/Ts8xHfUhfWb/yIIvG2wz+NkzD4SqwFzGtBqjRHp2de+mxUCyvom6QZF12/9ePBoa+JrxvcjAvH2nQ7E/gsj3O+SsyVUja0mVBn++DvY0GKvzdh7ScvX3ycaMxTl98oQCMYa/avr6oKCKhtZoYGMq52N1XetZrmtuQ== 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: 3011f326-b494-41e4-28f9-08d584b18988 X-MS-Exchange-CrossTenant-originalarrivaltime: 08 Mar 2018 04:59:08.1126 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR2101MB1112 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 d8e671457d10..41c22cb33424 100644 --- a/net/ipv6/ndisc.c +++ b/net/ipv6/ndisc.c @@ -1723,6 +1723,8 @@ 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