netdev - Re: [Bridge] [PATCH net-next v2 2/2] net: bridge: add per-port multicast flood flag

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Date:   Wed, 31 Aug 2016 03:37:26 +0200
From:   Linus Lüssing <linus.luessing@...3.blue>
To:     Nikolay Aleksandrov <nikolay@...ulusnetworks.com>
Cc:     netdev@...r.kernel.org, roopa@...ulusnetworks.com,
        bridge@...ts.linux-foundation.org, davem@...emloft.net
Subject: Re: [Bridge] [PATCH net-next v2 2/2] net: bridge: add per-port
 multicast flood flag

On Tue, Aug 30, 2016 at 05:23:08PM +0200, Nikolay Aleksandrov via Bridge wrote:
> diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c
> index 1da3221845f1..ed0dd3340084 100644
> --- a/net/bridge/br_if.c
> +++ b/net/bridge/br_if.c
> @@ -362,7 +362,7 @@ static struct net_bridge_port *new_nbp(struct net_bridge *br,
>  	p->path_cost = port_cost(dev);
>  	p->priority = 0x8000 >> BR_PORT_BITS;
>  	p->port_no = index;
> -	p->flags = BR_LEARNING | BR_FLOOD;
> +	p->flags = BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD;

I'm discontent with this new flag becoming the default.

Could you elaborate a little more on your use-case, when/why do
you want/need this flag?