{"id":810321,"url":"http://patchwork.ozlabs.org/api/1.2/patches/810321/?format=json","web_url":"http://patchwork.ozlabs.org/project/netdev/patch/1504654510-31004-8-git-send-email-andrew@lunn.ch/","project":{"id":7,"url":"http://patchwork.ozlabs.org/api/1.2/projects/7/?format=json","name":"Linux network development","link_name":"netdev","list_id":"netdev.vger.kernel.org","list_email":"netdev@vger.kernel.org","web_url":null,"scm_url":null,"webscm_url":null,"list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<1504654510-31004-8-git-send-email-andrew@lunn.ch>","list_archive_url":null,"date":"2017-09-05T23:35:09","name":"[v2,rfc,7/8] net: dsa: set offload_fwd_mark on received packets","commit_ref":null,"pull_url":null,"state":"rfc","archived":true,"hash":"3f36c73bdc41b5debf2c49c817619073c413c3fd","submitter":{"id":13608,"url":"http://patchwork.ozlabs.org/api/1.2/people/13608/?format=json","name":"Andrew Lunn","email":"andrew@lunn.ch"},"delegate":{"id":34,"url":"http://patchwork.ozlabs.org/api/1.2/users/34/?format=json","username":"davem","first_name":"David","last_name":"Miller","email":"davem@davemloft.net"},"mbox":"http://patchwork.ozlabs.org/project/netdev/patch/1504654510-31004-8-git-send-email-andrew@lunn.ch/mbox/","series":[{"id":1666,"url":"http://patchwork.ozlabs.org/api/1.2/series/1666/?format=json","web_url":"http://patchwork.ozlabs.org/project/netdev/list/?series=1666","date":"2017-09-05T23:35:04","name":"IGMP snooping for local traffic","version":2,"mbox":"http://patchwork.ozlabs.org/series/1666/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/810321/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/810321/checks/","tags":{},"related":[],"headers":{"Return-Path":"","X-Original-To":"patchwork-incoming@ozlabs.org","Delivered-To":"patchwork-incoming@ozlabs.org","Authentication-Results":"ozlabs.org;\n\tspf=none (mailfrom) smtp.mailfrom=vger.kernel.org\n\t(client-ip=209.132.180.67; helo=vger.kernel.org;\n\tenvelope-from=netdev-owner@vger.kernel.org;\n\treceiver=)","Received":["from vger.kernel.org (vger.kernel.org [209.132.180.67])\n\tby ozlabs.org (Postfix) with ESMTP id 3xn34l0Dhzz9s7h\n\tfor ;\n\tWed, 6 Sep 2017 09:36:07 +1000 (AEST)","(majordomo@vger.kernel.org) by vger.kernel.org via listexpand\n\tid S1753657AbdIEXgF (ORCPT );\n\tTue, 5 Sep 2017 19:36:05 -0400","from vps0.lunn.ch ([178.209.37.122]:58199 \"EHLO vps0.lunn.ch\"\n\trhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP\n\tid S1753475AbdIEXgE (ORCPT );\n\tTue, 5 Sep 2017 19:36:04 -0400","from andrew by vps0.lunn.ch with local (Exim 4.84_2)\n\t(envelope-from )\n\tid 1dpNNG-00085C-Jm; Wed, 06 Sep 2017 01:35:18 +0200"],"From":"Andrew Lunn ","To":"netdev ","Cc":"jiri@resnulli.us, nikolay@cumulusnetworks.com,\n\tFlorian Fainelli ,\n\tVivien Didelot ,\n\tAndrew Lunn ","Subject":"[PATCH v2 rfc 7/8] net: dsa: set offload_fwd_mark on received\n\tpackets","Date":"Wed, 6 Sep 2017 01:35:09 +0200","Message-Id":"<1504654510-31004-8-git-send-email-andrew@lunn.ch>","X-Mailer":"git-send-email 2.1.4","In-Reply-To":"<1504654510-31004-1-git-send-email-andrew@lunn.ch>","References":"<1504654510-31004-1-git-send-email-andrew@lunn.ch>","Sender":"netdev-owner@vger.kernel.org","Precedence":"bulk","List-ID":"","X-Mailing-List":"netdev@vger.kernel.org"},"content":"The software bridge needs to know if a packet has already been bridged\nby hardware offload to ports in the same hardware offload, in order\nthat it does not re-flood them, causing duplicates. This is\nparticularly true for multicast traffic which the host has required.\n\nBy setting offload_fwd_mark in the skb the bridge will only flood to\nports in other offloads and other netifs.\n\nSigned-off-by: Andrew Lunn \n---\n net/dsa/dsa.c | 1 +\n 1 file changed, 1 insertion(+)","diff":"diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c\nindex 03c58b0eb082..5732696ac71c 100644\n--- a/net/dsa/dsa.c\n+++ b/net/dsa/dsa.c\n@@ -213,6 +213,7 @@ static int dsa_switch_rcv(struct sk_buff *skb, struct net_device *dev,\n \tskb_push(skb, ETH_HLEN);\n \tskb->pkt_type = PACKET_HOST;\n \tskb->protocol = eth_type_trans(skb, skb->dev);\n+\tskb->offload_fwd_mark = 1;\n \n \ts = this_cpu_ptr(p->stats64);\n \tu64_stats_update_begin(&s->syncp);\n","prefixes":["v2","rfc","7/8"]}