diff options
| author |   Petr Machata <petrm@mellanox.com> | 2019-01-16 23:06:34 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2019-01-17 15:18:46 -0800 |
| commit | ccdfd4f71d10937504cac8663cb1782063319e39 (patch) | |
| tree | b7f1f4f3660164c11de7fada7c0d124e2f3597f1 | |
| parent | vxlan: Split vxlan_fdb_update() in two (diff) | |
| download | linux-dev-ccdfd4f71d10937504cac8663cb1782063319e39.tar.xz linux-dev-ccdfd4f71d10937504cac8663cb1782063319e39.zip | |
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: Petr Machata <petrm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/vxlan.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index aeaa429229c7..1c8d8c8e0961 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -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; |