vxlan: Factor out device configuration
This factors out the device configuration out of the RTNL newlink
API which allows for in-kernel creation of VXLAN net_devices.
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/vxlan.h b/include/net/vxlan.h
index 80a2da2..19535f8 100644
--- a/include/net/vxlan.h
+++ b/include/net/vxlan.h
@@ -95,6 +95,11 @@
#define VXLAN_VNI_MASK (VXLAN_VID_MASK << 8)
#define VXLAN_HLEN (sizeof(struct udphdr) + sizeof(struct vxlanhdr))
+#define VNI_HASH_BITS 10
+#define VNI_HASH_SIZE (1<<VNI_HASH_BITS)
+#define FDB_HASH_BITS 8
+#define FDB_HASH_SIZE (1<<FDB_HASH_BITS)
+
struct vxlan_metadata {
__be32 vni;
u32 gbp;
@@ -121,6 +126,57 @@
u32 flags;
};
+union vxlan_addr {
+ struct sockaddr_in sin;
+ struct sockaddr_in6 sin6;
+ struct sockaddr sa;
+};
+
+struct vxlan_rdst {
+ union vxlan_addr remote_ip;
+ __be16 remote_port;
+ u32 remote_vni;
+ u32 remote_ifindex;
+ struct list_head list;
+ struct rcu_head rcu;
+};
+
+struct vxlan_config {
+ union vxlan_addr remote_ip;
+ union vxlan_addr saddr;
+ u32 vni;
+ int remote_ifindex;
+ int mtu;
+ __be16 dst_port;
+ __u16 port_min;
+ __u16 port_max;
+ __u8 tos;
+ __u8 ttl;
+ u32 flags;
+ unsigned long age_interval;
+ unsigned int addrmax;
+ bool no_share;
+};
+
+/* Pseudo network device */
+struct vxlan_dev {
+ struct hlist_node hlist; /* vni hash table */
+ struct list_head next; /* vxlan's per namespace list */
+ struct vxlan_sock *vn_sock; /* listening socket */
+ struct net_device *dev;
+ struct net *net; /* netns for packet i/o */
+ struct vxlan_rdst default_dst; /* default destination */
+ u32 flags; /* VXLAN_F_* in vxlan.h */
+
+ struct timer_list age_timer;
+ spinlock_t hash_lock;
+ unsigned int addrcnt;
+
+ struct vxlan_config cfg;
+
+ struct hlist_head fdb_head[FDB_HASH_SIZE];
+};
+
#define VXLAN_F_LEARN 0x01
#define VXLAN_F_PROXY 0x02
#define VXLAN_F_RSC 0x04
@@ -151,6 +207,9 @@
vxlan_rcv_t *rcv, void *data,
bool no_share, u32 flags);
+struct net_device *vxlan_dev_create(struct net *net, const char *name,
+ u8 name_assign_type, struct vxlan_config *conf);
+
void vxlan_sock_release(struct vxlan_sock *vs);
int vxlan_xmit_skb(struct rtable *rt, struct sock *sk, struct sk_buff *skb,