1 #ifndef __NET_UDP_TUNNEL_WRAPPER_H
2 #define __NET_UDP_TUNNEL_WRAPPER_H
4 #include <linux/version.h>
5 #include <linux/kconfig.h>
7 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4,0,0)
8 #include_next <net/udp_tunnel.h>
10 static inline struct sk_buff *
11 rpl_udp_tunnel_handle_offloads(struct sk_buff *skb, bool udp_csum,
14 if (skb_is_gso(skb) && skb_is_encapsulated(skb)) {
16 return ERR_PTR(-ENOSYS);
18 return udp_tunnel_handle_offloads(skb, udp_csum);
20 #define udp_tunnel_handle_offloads rpl_udp_tunnel_handle_offloads
22 #if LINUX_VERSION_CODE < KERNEL_VERSION(4,1,0)
23 static inline int rpl_udp_tunnel_xmit_skb(struct rtable *rt,
24 struct sock *sk, struct sk_buff *skb,
25 __be32 src, __be32 dst, __u8 tos, __u8 ttl,
26 __be16 df, __be16 src_port, __be16 dst_port,
27 bool xnet, bool nocheck)
29 return udp_tunnel_xmit_skb(rt, skb, src, dst, tos, ttl, df, src_port,
30 dst_port, xnet, nocheck);
32 #define udp_tunnel_xmit_skb rpl_udp_tunnel_xmit_skb
36 #include <net/ip_tunnels.h>
42 /* Used only for kernel-created sockets */
44 struct in_addr local_ip;
45 #if IS_ENABLED(CONFIG_IPV6)
46 struct in6_addr local_ip6;
51 struct in_addr peer_ip;
52 #if IS_ENABLED(CONFIG_IPV6)
53 struct in6_addr peer_ip6;
57 __be16 local_udp_port;
59 unsigned int use_udp_checksums:1,
60 use_udp6_tx_checksums:1,
61 use_udp6_rx_checksums:1;
64 #define udp_sock_create rpl_udp_sock_create
65 int rpl_udp_sock_create(struct net *net, struct udp_port_cfg *cfg,
66 struct socket **sockp);
68 typedef int (*udp_tunnel_encap_rcv_t)(struct sock *sk, struct sk_buff *skb);
69 typedef void (*udp_tunnel_encap_destroy_t)(struct sock *sk);
71 struct udp_tunnel_sock_cfg {
72 void *sk_user_data; /* user data used by encap_rcv call back */
73 /* Used for setting up udp_sock fields, see udp.h for details */
75 udp_tunnel_encap_rcv_t encap_rcv;
76 udp_tunnel_encap_destroy_t encap_destroy;
79 /* Setup the given (UDP) sock to receive UDP encapsulated packets */
80 #define setup_udp_tunnel_sock rpl_setup_udp_tunnel_sock
81 void rpl_setup_udp_tunnel_sock(struct net *net, struct socket *sock,
82 struct udp_tunnel_sock_cfg *sock_cfg);
84 /* Transmit the skb using UDP encapsulation. */
85 #define udp_tunnel_xmit_skb rpl_udp_tunnel_xmit_skb
86 int rpl_udp_tunnel_xmit_skb(struct rtable *rt,
87 struct sock *sk, struct sk_buff *skb,
88 __be32 src, __be32 dst, __u8 tos, __u8 ttl,
89 __be16 df, __be16 src_port, __be16 dst_port,
90 bool xnet, bool nocheck);
93 #define udp_tunnel_sock_release rpl_udp_tunnel_sock_release
94 void rpl_udp_tunnel_sock_release(struct socket *sock);
96 void ovs_udp_gso(struct sk_buff *skb);
97 void ovs_udp_csum_gso(struct sk_buff *skb);
99 static inline struct sk_buff *udp_tunnel_handle_offloads(struct sk_buff *skb,
103 int type = udp_csum ? SKB_GSO_UDP_TUNNEL_CSUM : SKB_GSO_UDP_TUNNEL;
104 void (*fix_segment)(struct sk_buff *);
107 fix_segment = ovs_udp_gso;
109 fix_segment = ovs_udp_csum_gso;
111 #if LINUX_VERSION_CODE < KERNEL_VERSION(3,18,0)
116 return ovs_iptunnel_handle_offloads(skb, udp_csum, type, fix_segment);
119 #define udp_tunnel_encap_enable(sock) udp_encap_enable()
121 #endif /* Linux version < 4.0 */