From patchwork Tue Sep 8 09:10:30 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ido Schimmel X-Patchwork-Id: 261365 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=-12.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 142CAC433E2 for ; Tue, 8 Sep 2020 09:12:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E1E8021741 for ; Tue, 8 Sep 2020 09:12:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729251AbgIHJMJ (ORCPT ); Tue, 8 Sep 2020 05:12:09 -0400 Received: from wout4-smtp.messagingengine.com ([64.147.123.20]:45637 "EHLO wout4-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728893AbgIHJLt (ORCPT ); Tue, 8 Sep 2020 05:11:49 -0400 Received: from compute4.internal (compute4.nyi.internal [10.202.2.44]) by mailout.west.internal (Postfix) with ESMTP id 831673C6; Tue, 8 Sep 2020 05:11:48 -0400 (EDT) Received: from mailfrontend2 ([10.202.2.163]) by compute4.internal (MEProxy); Tue, 08 Sep 2020 05:11:49 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:date:from :in-reply-to:message-id:mime-version:references:subject:to :x-me-proxy:x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s= fm3; bh=6sDvyV6nHM2e+43BZ0OKQE+nuM4eHY//eaxzRdo1xIo=; b=FampHECY +jWair606A38BT1qqLWr9El+glrcf++W1ukgeELHUi8X4IDxBq5nlhQjccFcMw/B 60xTU+A93nKOkOJlCizrr6Uqd+oM1qPxO+sIHtqC1DjhIbG9+5EZxco72RaDzU1I EoRs6H5ylOCjaxfk6iUcdNYpcZSH0OCldjmRzpN9m60skkXiRBufZ0Gmo4tNRl7G A3EcSXKoNGrL/dX+vPKcVXzjAajNlHGDWzUH8YBk7YbQdXuFrs8LspkFGNlnvpI5 3S/XfP1xRegLlXPR2RT8TeNN9IOlXnxTmN0fgQv7Ox7tfKGYG2O6avxVD0k94Uq4 8eZPWfeCyFwe4w== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeduiedrudehvddguddvucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucenucfjughrpefhvffufffkofgjfhgggfestdekre dtredttdenucfhrhhomhepkfguohcuufgthhhimhhmvghluceoihguohhstghhsehiugho shgthhdrohhrgheqnecuggftrfgrthhtvghrnhepudetieevffffveelkeeljeffkefhke ehgfdtffethfelvdejgffghefgveejkefhnecukfhppeekgedrvddvledrfeeirdduvdek necuvehluhhsthgvrhfuihiivgepudefnecurfgrrhgrmhepmhgrihhlfhhrohhmpehiug hoshgthhesihguohhstghhrdhorhhg X-ME-Proxy: Received: from shredder.mtl.com (igld-84-229-36-128.inter.net.il [84.229.36.128]) by mail.messagingengine.com (Postfix) with ESMTPA id BF4CA3064680; Tue, 8 Sep 2020 05:11:46 -0400 (EDT) From: Ido Schimmel To: netdev@vger.kernel.org Cc: davem@davemloft.net, kuba@kernel.org, dsahern@gmail.com, roopa@nvidia.com, mlxsw@nvidia.com, Ido Schimmel Subject: [RFC PATCH net-next 15/22] nexthop: Emit a notification when a nexthop group is reduced Date: Tue, 8 Sep 2020 12:10:30 +0300 Message-Id: <20200908091037.2709823-16-idosch@idosch.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200908091037.2709823-1-idosch@idosch.org> References: <20200908091037.2709823-1-idosch@idosch.org> MIME-Version: 1.0 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Ido Schimmel When a single nexthop is deleted, the configuration of all the groups using the nexthop is effectively modified. In this case, emit a notification in the nexthop notification chain for each modified group so that listeners would not need to keep track of which nexthops are member in which groups. In the rare cases where the notification fails, emit an error to the kernel log. Signed-off-by: Ido Schimmel --- net/ipv4/nexthop.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/net/ipv4/nexthop.c b/net/ipv4/nexthop.c index 0edc3e73d416..33f611bbce1f 100644 --- a/net/ipv4/nexthop.c +++ b/net/ipv4/nexthop.c @@ -893,7 +893,7 @@ static void remove_nh_grp_entry(struct net *net, struct nh_grp_entry *nhge, struct nexthop *nhp = nhge->nh_parent; struct nexthop *nh = nhge->nh; struct nh_group *nhg, *newg; - int i, j; + int i, j, err; WARN_ON(!nh); @@ -941,6 +941,10 @@ static void remove_nh_grp_entry(struct net *net, struct nh_grp_entry *nhge, list_del(&nhge->nh_list); nexthop_put(nhge->nh); + err = call_nexthop_notifiers(net, NEXTHOP_EVENT_REPLACE, nhp, NULL); + if (err) + pr_err("Failed to replace nexthop group after nexthop deletion\n"); + if (nlinfo) nexthop_notify(RTM_NEWNEXTHOP, nhp, nlinfo); }