1 #ifndef __NET_UDP_TUNNEL_H
2 #define __NET_UDP_TUNNEL_H
4 #include <net/ip_tunnels.h>
7 #if IS_ENABLED(CONFIG_IPV6)
9 #include <net/addrconf.h>
15 /* Used only for kernel-created sockets */
17 struct in_addr local_ip;
18 #if IS_ENABLED(CONFIG_IPV6)
19 struct in6_addr local_ip6;
24 struct in_addr peer_ip;
25 #if IS_ENABLED(CONFIG_IPV6)
26 struct in6_addr peer_ip6;
30 __be16 local_udp_port;
32 unsigned int use_udp_checksums:1,
33 use_udp6_tx_checksums:1,
34 use_udp6_rx_checksums:1;
37 int udp_sock_create4(struct net *net, struct udp_port_cfg *cfg,
38 struct socket **sockp);
40 #if IS_ENABLED(CONFIG_IPV6)
41 int udp_sock_create6(struct net *net, struct udp_port_cfg *cfg,
42 struct socket **sockp);
44 static inline int udp_sock_create6(struct net *net, struct udp_port_cfg *cfg,
45 struct socket **sockp)
51 static inline int udp_sock_create(struct net *net,
52 struct udp_port_cfg *cfg,
53 struct socket **sockp)
55 if (cfg->family == AF_INET)
56 return udp_sock_create4(net, cfg, sockp);
58 if (cfg->family == AF_INET6)
59 return udp_sock_create6(net, cfg, sockp);
64 typedef int (*udp_tunnel_encap_rcv_t)(struct sock *sk, struct sk_buff *skb);
65 typedef void (*udp_tunnel_encap_destroy_t)(struct sock *sk);
67 struct udp_tunnel_sock_cfg {
68 void *sk_user_data; /* user data used by encap_rcv call back */
69 /* Used for setting up udp_sock fields, see udp.h for details */
71 udp_tunnel_encap_rcv_t encap_rcv;
72 udp_tunnel_encap_destroy_t encap_destroy;
75 /* Setup the given (UDP) sock to receive UDP encapsulated packets */
76 void setup_udp_tunnel_sock(struct net *net, struct socket *sock,
77 struct udp_tunnel_sock_cfg *sock_cfg);
79 /* Transmit the skb using UDP encapsulation. */
80 int udp_tunnel_xmit_skb(struct socket *sock, struct rtable *rt,
81 struct sk_buff *skb, __be32 src, __be32 dst,
82 __u8 tos, __u8 ttl, __be16 df, __be16 src_port,
83 __be16 dst_port, bool xnet);
85 #if IS_ENABLED(CONFIG_IPV6)
86 int udp_tunnel6_xmit_skb(struct socket *sock, struct dst_entry *dst,
87 struct sk_buff *skb, struct net_device *dev,
88 struct in6_addr *saddr, struct in6_addr *daddr,
89 __u8 prio, __u8 ttl, __be16 src_port,
93 void udp_tunnel_sock_release(struct socket *sock);
95 static inline struct sk_buff *udp_tunnel_handle_offloads(struct sk_buff *skb,
98 int type = udp_csum ? SKB_GSO_UDP_TUNNEL_CSUM : SKB_GSO_UDP_TUNNEL;
100 return iptunnel_handle_offloads(skb, udp_csum, type);
103 static inline void udp_tunnel_encap_enable(struct socket *sock)
105 #if IS_ENABLED(CONFIG_IPV6)
106 if (sock->sk->sk_family == PF_INET6)
107 ipv6_stub->udpv6_encap_enable();