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Commit ccdfd4f7 authored by Petr Machata's avatar Petr Machata Committed by David S. Miller
Browse files

vxlan: Have vxlan_fdb_replace() save original rdst value 



To enable rollbacks after vetoed FDB updates, extend vxlan_fdb_replace()
to take an additional argument where it should store the original values
of a modified rdst. Update the sole caller.

The following patch will make use of the saved value.

Signed-off-by: default avatarPetr Machata <petrm@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent a76d1ca2

drivers/net/vxlan.c

+4 −2
Original line number Diff line number Diff line
@@ -625,7 +625,7 @@ EXPORT_SYMBOL_GPL(vxlan_fdb_clear_offload); 
/* Replace destination of unicast mac */

static int vxlan_fdb_replace(struct vxlan_fdb *f,

			     union vxlan_addr *ip, __be16 port, __be32 vni,

			     __u32 ifindex)

			     __u32 ifindex, struct vxlan_rdst *oldrd)

{

	struct vxlan_rdst *rd;
@@ -637,6 +637,7 @@ static int vxlan_fdb_replace(struct vxlan_fdb *f, 
	if (!rd)

		return 0;



	*oldrd = *rd;

	dst_cache_reset(&rd->dst_cache);

	rd->remote_ip = *ip;

	rd->remote_port = port;
@@ -865,6 +866,7 @@ static int vxlan_fdb_update_existing(struct vxlan_dev *vxlan, 
{

	__u16 fdb_flags = (ndm_flags & ~NTF_USE);

	struct vxlan_rdst *rd = NULL;

	struct vxlan_rdst oldrd;

	int notify = 0;

	int rc;
@@ -890,7 +892,7 @@ static int vxlan_fdb_update_existing(struct vxlan_dev *vxlan, 
		if (!(is_multicast_ether_addr(f->eth_addr) ||

		      is_zero_ether_addr(f->eth_addr))) {

			rc = vxlan_fdb_replace(f, ip, port, vni,

					       ifindex);

					       ifindex, &oldrd);

			notify |= rc;

		} else {

			return -EOPNOTSUPP;