netdev - Re: [PATCH v2 rfc 4/8] net: dsa: slave: Handle switchdev host mdb add/del

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Date:   Wed, 06 Sep 2017 11:37:42 -0400
From:   Vivien Didelot <vivien.didelot@...oirfairelinux.com>
To:     Andrew Lunn <andrew@...n.ch>, netdev <netdev@...r.kernel.org>
Cc:     jiri@...nulli.us, nikolay@...ulusnetworks.com,
        Florian Fainelli <f.fainelli@...il.com>,
        Andrew Lunn <andrew@...n.ch>
Subject: Re: [PATCH v2 rfc 4/8] net: dsa: slave: Handle switchdev host mdb add/del

Hi Andrew,

Andrew Lunn <andrew@...n.ch> writes:

> Add code to handle switchdev host mdb add/del. As with normal mdb
> add/del, send a notification to the switch layer.
>
> Signed-off-by: Andrew Lunn <andrew@...n.ch>
> ---
>  net/dsa/dsa_priv.h |  7 +++++++
>  net/dsa/port.c     | 26 ++++++++++++++++++++++++++
>  net/dsa/slave.c    |  6 ++++++
>  3 files changed, 39 insertions(+)
>
> diff --git a/net/dsa/dsa_priv.h b/net/dsa/dsa_priv.h
> index 9c3eeb72462d..0ffe49f78d14 100644
> --- a/net/dsa/dsa_priv.h
> +++ b/net/dsa/dsa_priv.h
> @@ -24,6 +24,8 @@ enum {
>  	DSA_NOTIFIER_FDB_DEL,
>  	DSA_NOTIFIER_MDB_ADD,
>  	DSA_NOTIFIER_MDB_DEL,
> +	DSA_NOTIFIER_HOST_MDB_ADD,
> +	DSA_NOTIFIER_HOST_MDB_DEL,
>  	DSA_NOTIFIER_VLAN_ADD,
>  	DSA_NOTIFIER_VLAN_DEL,
>  };
> @@ -131,6 +133,11 @@ int dsa_port_mdb_add(struct dsa_port *dp,
>  		     struct switchdev_trans *trans);
>  int dsa_port_mdb_del(struct dsa_port *dp,
>  		     const struct switchdev_obj_port_mdb *mdb);
> +int dsa_host_mdb_add(struct dsa_port *dp,
> +		     const struct switchdev_obj_port_mdb *mdb,
> +		     struct switchdev_trans *trans);
> +int dsa_host_mdb_del(struct dsa_port *dp,
> +		     const struct switchdev_obj_port_mdb *mdb);
>  int dsa_port_vlan_add(struct dsa_port *dp,
>  		      const struct switchdev_obj_port_vlan *vlan,
>  		      struct switchdev_trans *trans);
> diff --git a/net/dsa/port.c b/net/dsa/port.c
> index 659676ba3f8b..5b18b9fe2219 100644
> --- a/net/dsa/port.c
> +++ b/net/dsa/port.c
> @@ -199,6 +199,32 @@ int dsa_port_mdb_del(struct dsa_port *dp,
>  	return dsa_port_notify(dp, DSA_NOTIFIER_MDB_DEL, &info);
>  }
>  
> +int dsa_host_mdb_add(struct dsa_port *dp,
> +		     const struct switchdev_obj_port_mdb *mdb,
> +		     struct switchdev_trans *trans)
> +{
> +	struct dsa_notifier_mdb_info info = {
> +		.sw_index = dp->ds->index,
> +		.port = dp->index,
> +		.trans = trans,
> +		.mdb = mdb,
> +	};
> +
> +	return dsa_port_notify(dp, DSA_NOTIFIER_HOST_MDB_ADD, &info);
> +}
> +
> +int dsa_host_mdb_del(struct dsa_port *dp,
> +		     const struct switchdev_obj_port_mdb *mdb)
> +{
> +	struct dsa_notifier_mdb_info info = {
> +		.sw_index = dp->ds->index,
> +		.port = dp->index,
> +		.mdb = mdb,
> +	};
> +
> +	return dsa_port_notify(dp, DSA_NOTIFIER_HOST_MDB_DEL, &info);
> +}
> +
>  int dsa_port_vlan_add(struct dsa_port *dp,
>  		      const struct switchdev_obj_port_vlan *vlan,
>  		      struct switchdev_trans *trans)
> diff --git a/net/dsa/slave.c b/net/dsa/slave.c
> index 78e78a6e6833..2e07be149415 100644
> --- a/net/dsa/slave.c
> +++ b/net/dsa/slave.c
> @@ -330,6 +330,9 @@ static int dsa_slave_port_obj_add(struct net_device *dev,
>  	case SWITCHDEV_OBJ_ID_PORT_MDB:
>  		err = dsa_port_mdb_add(dp, SWITCHDEV_OBJ_PORT_MDB(obj), trans);
>  		break;
> +	case SWITCHDEV_OBJ_ID_HOST_MDB:
> +		err = dsa_host_mdb_add(dp, SWITCHDEV_OBJ_PORT_MDB(obj), trans);
> +		break;

If SWITCHDEV_OBJ_ID_HOST_MDB is really necessary, 

    case SWITCHDEV_OBJ_ID_HOST_MDB:
        err = dsa_port_mdb_add(dp->cpu_dp, SWITCHDEV_OBJ_PORT_MDB(obj), trans);
        break;

should be enough. DSA_NOTIFIER_HOST_MDB_* are not necessary.


Thanks,

        Vivien