diff options
Diffstat (limited to 'drivers/net/vxlan.c')
| -rw-r--r-- | drivers/net/vxlan.c | 23 |
1 files changed, 18 insertions, 5 deletions
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index bdfe46e50c49..306bd94efa89 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -388,21 +388,34 @@ static struct vxlan_fdb *vxlan_find_mac(struct vxlan_dev *vxlan, return f; } -/* Add/update destinations for multicast */ -static int vxlan_fdb_append(struct vxlan_fdb *f, - __be32 ip, __be16 port, __u32 vni, __u32 ifindex) +/* caller should hold vxlan->hash_lock */ +static struct vxlan_rdst *vxlan_fdb_find_rdst(struct vxlan_fdb *f, + __be32 ip, __be16 port, + __u32 vni, __u32 ifindex) { struct vxlan_rdst *rd; - /* protected by vxlan->hash_lock */ list_for_each_entry(rd, &f->remotes, list) { if (rd->remote_ip == ip && rd->remote_port == port && rd->remote_vni == vni && rd->remote_ifindex == ifindex) - return 0; + return rd; } + return NULL; +} + +/* Add/update destinations for multicast */ +static int vxlan_fdb_append(struct vxlan_fdb *f, + __be32 ip, __be16 port, __u32 vni, __u32 ifindex) +{ + struct vxlan_rdst *rd; + + rd = vxlan_fdb_find_rdst(f, ip, port, vni, ifindex); + if (rd) + return 0; + rd = kmalloc(sizeof(*rd), GFP_ATOMIC); if (rd == NULL) return -ENOBUFS; |
