From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932609AbdLGPx6 (ORCPT ); Thu, 7 Dec 2017 10:53:58 -0500 Received: from omzsmtpe01.verizonbusiness.com ([199.249.25.210]:36441 "EHLO omzsmtpe01.verizonbusiness.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932556AbdLGPxv (ORCPT ); Thu, 7 Dec 2017 10:53:51 -0500 From: alexander.levin@verizon.com Cc: Vlad Yasevich , Vladislav Yasevich , "David S . Miller" , alexander.levin@verizon.com X-Host: surveyor.tdc.vzwcorp.com To: "linux-kernel@vger.kernel.org" , "stable@vger.kernel.org" Subject: [PATCH AUTOSEL for 4.4 019/101] net: Resend IGMP memberships upon peer notification. Thread-Topic: [PATCH AUTOSEL for 4.4 019/101] net: Resend IGMP memberships upon peer notification. Thread-Index: AQHTb3MT3VAxRn2HgEawqH1u/TSeEg== Date: Thu, 7 Dec 2017 15:50:16 +0000 Message-ID: <20171207155005.5852-19-alexander.levin@verizon.com> References: <20171207155005.5852-1-alexander.levin@verizon.com> In-Reply-To: <20171207155005.5852-1-alexander.levin@verizon.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.144.60.250] Content-Type: text/plain; charset="iso-8859-1" MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by nfs id vB7GnkcX017353 From: Vlad Yasevich [ Upstream commit 37c343b4f4e70e9dc328ab04903c0ec8d154c1a4 ] When we notify peers of potential changes, it's also good to update IGMP memberships. For example, during VM migration, updating IGMP memberships will redirect existing multicast streams to the VM at the new location. Signed-off-by: Vladislav Yasevich Acked-by: Michael S. Tsirkin Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- net/core/dev.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/core/dev.c b/net/core/dev.c index 630704d8d6a2..3b67c1e5756f 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -1300,6 +1300,7 @@ void netdev_notify_peers(struct net_device *dev) { rtnl_lock(); call_netdevice_notifiers(NETDEV_NOTIFY_PEERS, dev); + call_netdevice_notifiers(NETDEV_RESEND_IGMP, dev); rtnl_unlock(); } EXPORT_SYMBOL(netdev_notify_peers); -- 2.11.0