From mboxrd@z Thu Jan 1 00:00:00 1970 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=-18.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, 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 E7A49C433E9 for ; Mon, 1 Mar 2021 17:00:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B7A78650F3 for ; Mon, 1 Mar 2021 17:00:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236450AbhCARAg (ORCPT ); Mon, 1 Mar 2021 12:00:36 -0500 Received: from mail.kernel.org ([198.145.29.99]:54172 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236405AbhCAQyF (ORCPT ); Mon, 1 Mar 2021 11:54:05 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 0183664FC2; Mon, 1 Mar 2021 16:34:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1614616496; bh=Dc0V88mP9vN9B8FGTHdosOrupTOqRmd+la+jOgweKGk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=k5ZvGSBz5B29XYyiXUWdkNLXfxWhu6bUGHtp0pwfA22RlsjfphpfJU6OlwOw89qxZ XNjFBzrAqAF+ZIXIEbkNZ5p49ijR2aoeTXLaNhmvwK/lRVY4qNcm9FnNChU7raIQSb jlt0ohJM9ocshqasxJ9fK1X7rsmPRJR82TBHzR/E= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, "Jason A. Donenfeld" , Shannon Nelson , "David S. Miller" Subject: [PATCH 4.14 172/176] sunvnet: use icmp_ndo_send helper Date: Mon, 1 Mar 2021 17:14:05 +0100 Message-Id: <20210301161029.575840597@linuxfoundation.org> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210301161020.931630716@linuxfoundation.org> References: <20210301161020.931630716@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Jason A. Donenfeld commit 67c9a7e1e3ac491b5df018803639addc36f154ba upstream. Because sunvnet is calling icmp from network device context, it should use the ndo helper so that the rate limiting applies correctly. While we're at it, doing the additional route lookup before calling icmp_ndo_send is superfluous, since this is the job of the icmp code in the first place. Signed-off-by: Jason A. Donenfeld Cc: Shannon Nelson Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- drivers/net/ethernet/sun/sunvnet_common.c | 23 ++++------------------- 1 file changed, 4 insertions(+), 19 deletions(-) --- a/drivers/net/ethernet/sun/sunvnet_common.c +++ b/drivers/net/ethernet/sun/sunvnet_common.c @@ -1352,27 +1352,12 @@ sunvnet_start_xmit_common(struct sk_buff if (vio_version_after_eq(&port->vio, 1, 3)) localmtu -= VLAN_HLEN; - if (skb->protocol == htons(ETH_P_IP)) { - struct flowi4 fl4; - struct rtable *rt = NULL; - - memset(&fl4, 0, sizeof(fl4)); - fl4.flowi4_oif = dev->ifindex; - fl4.flowi4_tos = RT_TOS(ip_hdr(skb)->tos); - fl4.daddr = ip_hdr(skb)->daddr; - fl4.saddr = ip_hdr(skb)->saddr; - - rt = ip_route_output_key(dev_net(dev), &fl4); - if (!IS_ERR(rt)) { - skb_dst_set(skb, &rt->dst); - icmp_send(skb, ICMP_DEST_UNREACH, - ICMP_FRAG_NEEDED, - htonl(localmtu)); - } - } + if (skb->protocol == htons(ETH_P_IP)) + icmp_ndo_send(skb, ICMP_DEST_UNREACH, ICMP_FRAG_NEEDED, + htonl(localmtu)); #if IS_ENABLED(CONFIG_IPV6) else if (skb->protocol == htons(ETH_P_IPV6)) - icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, localmtu); + icmpv6_ndo_send(skb, ICMPV6_PKT_TOOBIG, 0, localmtu); #endif goto out_dropped; }