netdev - Re: [PATCH net-next v2] net: sparx5: Support offloading of bridge port flooding flags

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Date:   Tue, 22 Feb 2022 19:08:54 +0100
From:   Horatiu Vultur <horatiu.vultur@...rochip.com>
To:     Casper Andersson <casper.casan@...il.com>
CC:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Lars Povlsen <lars.povlsen@...rochip.com>,
        Steen Hegelund <Steen.Hegelund@...rochip.com>,
        <UNGLinuxDriver@...rochip.com>, <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next v2] net: sparx5: Support offloading of bridge
 port flooding flags

The 02/22/2022 15:35, Casper Andersson wrote:
> [Some people who received this message don't often get email from casper.casan@...il.com. Learn why this is important at http://aka.ms/LearnAboutSenderIdentification.]
> 
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> 
> Though the SparX-5i can control IPv4/6 multicasts separately from non-IP
> multicasts, these are all muxed onto the bridge's BR_MCAST_FLOOD flag.
> 
> Signed-off-by: Casper Andersson <casper.casan@...il.com>

Reviewed-by: Horatiu Vultur <horatiu.vultur@...rochip.com>

> ---
> Since Protonmail apparently caused issues with certain email clients
> I have now switched to using gmail. Hopefully, there will be no issues
> this time.
> 
> Changes in v2:
>  - Added SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS callback
> 
>  .../microchip/sparx5/sparx5_switchdev.c       | 21 ++++++++++++++++++-
>  1 file changed, 20 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_switchdev.c b/drivers/net/ethernet/microchip/sparx5/sparx5_switchdev.c
> index 649ca609884a..dc79791201d8 100644
> --- a/drivers/net/ethernet/microchip/sparx5/sparx5_switchdev.c
> +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_switchdev.c
> @@ -19,11 +19,27 @@ struct sparx5_switchdev_event_work {
>         unsigned long event;
>  };
> 
> +static int sparx5_port_attr_pre_bridge_flags(struct sparx5_port *port,
> +                                            struct switchdev_brport_flags flags)
> +{
> +       if (flags.mask & ~(BR_FLOOD | BR_MCAST_FLOOD | BR_BCAST_FLOOD))
> +               return -EINVAL;
> +
> +       return 0;
> +}
> +
>  static void sparx5_port_attr_bridge_flags(struct sparx5_port *port,
>                                           struct switchdev_brport_flags flags)
>  {
> +       int pgid;
> +
>         if (flags.mask & BR_MCAST_FLOOD)
> -               sparx5_pgid_update_mask(port, PGID_MC_FLOOD, true);
> +               for (pgid = PGID_MC_FLOOD; pgid <= PGID_IPV6_MC_CTRL; pgid++)
> +                       sparx5_pgid_update_mask(port, pgid, !!(flags.val & BR_MCAST_FLOOD));
> +       if (flags.mask & BR_FLOOD)
> +               sparx5_pgid_update_mask(port, PGID_UC_FLOOD, !!(flags.val & BR_FLOOD));
> +       if (flags.mask & BR_BCAST_FLOOD)
> +               sparx5_pgid_update_mask(port, PGID_BCAST, !!(flags.val & BR_BCAST_FLOOD));
>  }
> 
>  static void sparx5_attr_stp_state_set(struct sparx5_port *port,
> @@ -72,6 +88,9 @@ static int sparx5_port_attr_set(struct net_device *dev, const void *ctx,
>         struct sparx5_port *port = netdev_priv(dev);
> 
>         switch (attr->id) {
> +       case SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS:
> +               return sparx5_port_attr_pre_bridge_flags(port,
> +                                                        attr->u.brport_flags);
>         case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
>                 sparx5_port_attr_bridge_flags(port, attr->u.brport_flags);
>                 break;
> --
> 2.30.2
> 

-- 
/Horatiu