netdev - Re: [PATCH net-next 3/3] net: sparx5: add support for mrouter ports

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Date:   Tue, 23 Aug 2022 11:46:05 +0200
From:   Steen Hegelund <steen.hegelund@...rochip.com>
To:     Casper Andersson <casper.casan@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, <netdev@...r.kernel.org>
CC:     Horatiu Vultur <horatiu.vultur@...rochip.com>,
        Lars Povlsen <lars.povlsen@...rochip.com>,
        <UNGLinuxDriver@...rochip.com>
Subject: Re: [PATCH net-next 3/3] net: sparx5: add support for mrouter ports

Hi Casper,

On Mon, 2022-08-22 at 16:08 +0200, Casper Andersson wrote:
> +static void sparx5_port_attr_mrouter_set(struct sparx5_port *port,
> +                                        struct net_device *orig_dev,
> +                                        bool enable)
> +{
> +       struct sparx5 *sparx5 = port->sparx5;
> +       struct sparx5_mdb_entry *e;
> +       bool flood_flag;
> +
> +       if ((enable && port->is_mrouter) || (!enable && !port->is_mrouter))
> +               return;
> +
> +       /* Add/del mrouter port on all active mdb entries in HW.
> +        * Don't change entry port mask, since that represents
> +        * ports that actually joined that group.
> +        */
> +       mutex_lock(&sparx5->mdb_lock);
> +       list_for_each_entry(e, &sparx5->mdb_entries, list) {
> +               if (!test_bit(port->portno, e->port_mask) &&
> +                   ether_addr_is_ip_mcast(e->addr))
> +                       sparx5_pgid_update_mask(port, e->pgid_idx, enable);
> +       }
> +       mutex_unlock(&sparx5->mdb_lock);
> +
> +       /* Enable/disable flooding depeding on if port is mrouter port

depending

> +        * or if mcast flood is enabled.
> +        */
> +       port->is_mrouter = enable;
> +       flood_flag = br_port_flag_is_set(port->ndev, BR_MCAST_FLOOD);
> +       sparx5_port_update_mcast_ip_flood(port, flood_flag);
> +}
> 

BR
Steen