xref: /linux/include/net/ipv6_stubs.h (revision 14340de506c9aa08baa9540ee6250c9d978c16b7)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _IPV6_STUBS_H
3 #define _IPV6_STUBS_H
4 
5 #include <linux/in6.h>
6 #include <linux/netdevice.h>
7 #include <linux/skbuff.h>
8 #include <net/dst.h>
9 #include <net/flow.h>
10 #include <net/neighbour.h>
11 #include <net/sock.h>
12 
13 /* structs from net/ip6_fib.h */
14 struct fib6_info;
15 struct fib6_nh;
16 struct fib6_config;
17 struct fib6_result;
18 
19 /* This is ugly, ideally these symbols should be built
20  * into the core kernel.
21  */
22 struct ipv6_stub {
23 	int (*ipv6_sock_mc_join)(struct sock *sk, int ifindex,
24 				 const struct in6_addr *addr);
25 	int (*ipv6_sock_mc_drop)(struct sock *sk, int ifindex,
26 				 const struct in6_addr *addr);
27 	int (*ipv6_dst_lookup)(struct net *net, struct sock *sk,
28 			       struct dst_entry **dst, struct flowi6 *fl6);
29 	int (*ipv6_route_input)(struct sk_buff *skb);
30 
31 	struct fib6_table *(*fib6_get_table)(struct net *net, u32 id);
32 	int (*fib6_lookup)(struct net *net, int oif, struct flowi6 *fl6,
33 			   struct fib6_result *res, int flags);
34 	int (*fib6_table_lookup)(struct net *net, struct fib6_table *table,
35 				 int oif, struct flowi6 *fl6,
36 				 struct fib6_result *res, int flags);
37 	void (*fib6_select_path)(const struct net *net, struct fib6_result *res,
38 				 struct flowi6 *fl6, int oif, bool oif_match,
39 				 const struct sk_buff *skb, int strict);
40 	u32 (*ip6_mtu_from_fib6)(const struct fib6_result *res,
41 				 const struct in6_addr *daddr,
42 				 const struct in6_addr *saddr);
43 
44 	int (*fib6_nh_init)(struct net *net, struct fib6_nh *fib6_nh,
45 			    struct fib6_config *cfg, gfp_t gfp_flags,
46 			    struct netlink_ext_ack *extack);
47 	void (*fib6_nh_release)(struct fib6_nh *fib6_nh);
48 	void (*udpv6_encap_enable)(void);
49 	void (*ndisc_send_na)(struct net_device *dev, const struct in6_addr *daddr,
50 			      const struct in6_addr *solicited_addr,
51 			      bool router, bool solicited, bool override, bool inc_opt);
52 	struct neigh_table *nd_tbl;
53 };
54 extern const struct ipv6_stub *ipv6_stub __read_mostly;
55 
56 /* A stub used by bpf helpers. Similarly ugly as ipv6_stub */
57 struct ipv6_bpf_stub {
58 	int (*inet6_bind)(struct sock *sk, struct sockaddr *uaddr, int addr_len,
59 			  bool force_bind_address_no_port, bool with_lock);
60 	struct sock *(*udp6_lib_lookup)(struct net *net,
61 				     const struct in6_addr *saddr, __be16 sport,
62 				     const struct in6_addr *daddr, __be16 dport,
63 				     int dif, int sdif, struct udp_table *tbl,
64 				     struct sk_buff *skb);
65 };
66 extern const struct ipv6_bpf_stub *ipv6_bpf_stub __read_mostly;
67 
68 #endif
69