From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Message-ID: <1483710841.12677.1.camel@sipsolutions.net> From: Johannes Berg Date: Fri, 06 Jan 2017 14:54:01 +0100 In-Reply-To: <8836daaa-9638-4502-d079-fd428595f822@nbd.name> References: <20170102193214.31723-1-linus.luessing@c0d3.blue> <1483706872.4089.8.camel@sipsolutions.net> <8836daaa-9638-4502-d079-fd428595f822@nbd.name> Content-Type: text/plain; charset="UTF-8" Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: Re: [Bridge] [PATCH net-next] bridge: multicast to unicast List-Id: Linux Ethernet Bridging List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Felix Fietkau , Linus =?ISO-8859-1?Q?L=FCssing?= , netdev@vger.kernel.org Cc: bridge@lists.linux-foundation.org, linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org, "David S . Miller" , Michael Braun > The bridge layer can use IGMP snooping to ensure that the multicast > stream is only transmitted to clients that are actually a member of > the group. Can the mac80211 feature do the same? No, it'll convert the packet for all clients that are behind that netdev. But that's an argument for dropping the mac80211 feature, which hasn't been merged upstream yet, no? johannes From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from s3.sipsolutions.net ([5.9.151.49]:60468 "EHLO sipsolutions.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757177AbdAFNyI (ORCPT ); Fri, 6 Jan 2017 08:54:08 -0500 Message-ID: <1483710841.12677.1.camel@sipsolutions.net> (sfid-20170106_145438_248442_484DE4C5) Subject: Re: [PATCH net-next] bridge: multicast to unicast From: Johannes Berg To: Felix Fietkau , Linus =?ISO-8859-1?Q?L=FCssing?= , netdev@vger.kernel.org Cc: "David S . Miller" , Stephen Hemminger , bridge@lists.linux-foundation.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, Michael Braun Date: Fri, 06 Jan 2017 14:54:01 +0100 In-Reply-To: <8836daaa-9638-4502-d079-fd428595f822@nbd.name> References: <20170102193214.31723-1-linus.luessing@c0d3.blue> <1483706872.4089.8.camel@sipsolutions.net> <8836daaa-9638-4502-d079-fd428595f822@nbd.name> Content-Type: text/plain; charset="UTF-8" Mime-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org List-ID: > The bridge layer can use IGMP snooping to ensure that the multicast > stream is only transmitted to clients that are actually a member of > the group. Can the mac80211 feature do the same? No, it'll convert the packet for all clients that are behind that netdev. But that's an argument for dropping the mac80211 feature, which hasn't been merged upstream yet, no? johannes From mboxrd@z Thu Jan 1 00:00:00 1970 From: Johannes Berg Subject: Re: [PATCH net-next] bridge: multicast to unicast Date: Fri, 06 Jan 2017 14:54:01 +0100 Message-ID: <1483710841.12677.1.camel@sipsolutions.net> References: <20170102193214.31723-1-linus.luessing@c0d3.blue> <1483706872.4089.8.camel@sipsolutions.net> <8836daaa-9638-4502-d079-fd428595f822@nbd.name> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: bridge@lists.linux-foundation.org, linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org, "David S . Miller" , Michael Braun To: Felix Fietkau , Linus =?ISO-8859-1?Q?L=FCssing?= , netdev@vger.kernel.org Return-path: In-Reply-To: <8836daaa-9638-4502-d079-fd428595f822@nbd.name> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: bridge-bounces@lists.linux-foundation.org Errors-To: bridge-bounces@lists.linux-foundation.org List-Id: netdev.vger.kernel.org > The bridge layer can use IGMP snooping to ensure that the multicast > stream is only transmitted to clients that are actually a member of > the group. Can the mac80211 feature do the same? No, it'll convert the packet for all clients that are behind that netdev. But that's an argument for dropping the mac80211 feature, which hasn't been merged upstream yet, no? johannes