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Commit 4ba0dea5 authored by Greg Rose's avatar Greg Rose Committed by Jeff Kirsher
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i40e: Add bridge FDB add/del/dump ops 



Add the netdev ops to support addition of static FDB entries in the
physical function (PF)  MAC/VLAN filter table so that virtual functions
(VFs) can communicate with bridged virtual Ethernet ports such as those
provided by the virtio driver.

Change-ID: Ifbd6817a75074e3b5cdf945a5635f26440bf15df
Signed-off-by: default avatarGreg Rose <gregory.v.rose@intel.com>
Signed-off-by: default avatarCatherine Sullivan <catherine.sullivan@intel.com>
Tested-by: default avatarKavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
parent 5a9d19ab

drivers/net/ethernet/intel/i40e/i40e_main.c

+97 −0
Original line number Diff line number Diff line
@@ -6644,6 +6644,96 @@ static void i40e_del_vxlan_port(struct net_device *netdev, 
}



#endif

#ifdef HAVE_FDB_OPS

#ifdef USE_CONST_DEV_UC_CHAR

static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],

			    struct net_device *dev,

			    const unsigned char *addr,

			    u16 flags)

#else

static int i40e_ndo_fdb_add(struct ndmsg *ndm,

			    struct net_device *dev,

			    unsigned char *addr,

			    u16 flags)

#endif

{

	struct i40e_netdev_priv *np = netdev_priv(dev);

	struct i40e_pf *pf = np->vsi->back;

	int err = 0;



	if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))

		return -EOPNOTSUPP;



	/* Hardware does not support aging addresses so if a

	 * ndm_state is given only allow permanent addresses

	 */

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

		netdev_info(dev, "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;

}



#ifndef USE_DEFAULT_FDB_DEL_DUMP

#ifdef USE_CONST_DEV_UC_CHAR

static int i40e_ndo_fdb_del(struct ndmsg *ndm,

			    struct net_device *dev,

			    const unsigned char *addr)

#else

static int i40e_ndo_fdb_del(struct ndmsg *ndm,

			    struct net_device *dev,

			    unsigned char *addr)

#endif

{

	struct i40e_netdev_priv *np = netdev_priv(dev);

	struct i40e_pf *pf = np->vsi->back;

	int err = -EOPNOTSUPP;



	if (ndm->ndm_state & NUD_PERMANENT) {

		netdev_info(dev, "FDB only supports static addresses\n");

		return -EINVAL;

	}



	if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {

		if (is_unicast_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 i40e_ndo_fdb_dump(struct sk_buff *skb,

			     struct netlink_callback *cb,

			     struct net_device *dev,

			     int idx)

{

	struct i40e_netdev_priv *np = netdev_priv(dev);

	struct i40e_pf *pf = np->vsi->back;



	if (pf->flags & I40E_FLAG_SRIOV_ENABLED)

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



	return idx;

}



#endif /* USE_DEFAULT_FDB_DEL_DUMP */

#endif /* HAVE_FDB_OPS */

static const struct net_device_ops i40e_netdev_ops = {

	.ndo_open		= i40e_open,

	.ndo_stop		= i40e_close,
@@ -6671,6 +6761,13 @@ static const struct net_device_ops i40e_netdev_ops = { 
	.ndo_add_vxlan_port	= i40e_add_vxlan_port,

	.ndo_del_vxlan_port	= i40e_del_vxlan_port,

#endif

#ifdef HAVE_FDB_OPS

	.ndo_fdb_add		= i40e_ndo_fdb_add,

#ifndef USE_DEFAULT_FDB_DEL_DUMP

	.ndo_fdb_del		= i40e_ndo_fdb_del,

	.ndo_fdb_dump		= i40e_ndo_fdb_dump,

#endif

#endif

};



/**