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Commit 0ccddcd1 authored by Yan Burman's avatar Yan Burman Committed by David S. Miller
Browse files

net/mlx4_en: Implement ndo fdb functionality 



Add support for setting embedded switch fdb in case of SRIOV, by
implementing ndo_fdb_{add, del, dump}. This will allow to use
bridged configuration with multi-function. In order to add VM MAC
to the eSwitch fdb, the following command may be used over the relevant function interface:
bridge fdb add <MAC> permanent self dev <IFACE>

Signed-off-by: default avatarYan Burman <yanb@mellanox.com>
Signed-off-by: default avatarAmir Vadai <amirv@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent cc5387f7

drivers/net/ethernet/mellanox/mlx4/en_netdev.c

+75 −0
Original line number Diff line number Diff line
@@ -1931,6 +1931,78 @@ static int mlx4_en_set_features(struct net_device *netdev, 


}



static int mlx4_en_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],

			   struct net_device *dev,

			   const unsigned char *addr, u16 flags)

{

	struct mlx4_en_priv *priv = netdev_priv(dev);

	struct mlx4_dev *mdev = priv->mdev->dev;

	int err;



	if (!mlx4_is_mfunc(mdev))

		return -EOPNOTSUPP;



	/* Hardware does not support aging addresses, allow only

	 * permanent addresses if ndm_state is given

	 */

	if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {

		en_info(priv, "Add FDB only supports static addresses\n");

		return -EINVAL;

	}



	if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))

		err = dev_uc_add_excl(dev, addr);

	else if (is_multicast_ether_addr(addr))

		err = dev_mc_add_excl(dev, addr);

	else

		err = -EINVAL;



	/* Only return duplicate errors if NLM_F_EXCL is set */

	if (err == -EEXIST && !(flags & NLM_F_EXCL))

		err = 0;



	return err;

}



static int mlx4_en_fdb_del(struct ndmsg *ndm,

			   struct net_device *dev,

			   const unsigned char *addr)

{

	struct mlx4_en_priv *priv = netdev_priv(dev);

	struct mlx4_dev *mdev = priv->mdev->dev;

	int err;



	if (!mlx4_is_mfunc(mdev))

		return -EOPNOTSUPP;



	if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {

		en_info(priv, "Del FDB only supports static addresses\n");

		return -EINVAL;

	}



	if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))

		err = dev_uc_del(dev, addr);

	else if (is_multicast_ether_addr(addr))

		err = dev_mc_del(dev, addr);

	else

		err = -EINVAL;



	return err;

}



static int mlx4_en_fdb_dump(struct sk_buff *skb,

			    struct netlink_callback *cb,

			    struct net_device *dev, int idx)

{

	struct mlx4_en_priv *priv = netdev_priv(dev);

	struct mlx4_dev *mdev = priv->mdev->dev;



	if (mlx4_is_mfunc(mdev))

		idx = ndo_dflt_fdb_dump(skb, cb, dev, idx);



	return idx;

}



static const struct net_device_ops mlx4_netdev_ops = {

	.ndo_open		= mlx4_en_open,

	.ndo_stop		= mlx4_en_close,
@@ -1952,6 +2024,9 @@ static const struct net_device_ops mlx4_netdev_ops = { 
#ifdef CONFIG_RFS_ACCEL

	.ndo_rx_flow_steer	= mlx4_en_filter_rfs,

#endif

	.ndo_fdb_add		= mlx4_en_fdb_add,

	.ndo_fdb_del		= mlx4_en_fdb_del,

	.ndo_fdb_dump		= mlx4_en_fdb_dump,

};



int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,