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 | struct dst_entry *(*ipv6_dst_lookup_flow)(struct net *net, |
28 | const struct sock *sk, |
29 | struct flowi6 *fl6, |
30 | const struct in6_addr *final_dst); |
31 | int (*ipv6_route_input)(struct sk_buff *skb); |
32 | |
33 | struct fib6_table *(*fib6_get_table)(struct net *net, u32 id); |
34 | int (*fib6_lookup)(struct net *net, int oif, struct flowi6 *fl6, |
35 | struct fib6_result *res, int flags); |
36 | int (*fib6_table_lookup)(struct net *net, struct fib6_table *table, |
37 | int oif, struct flowi6 *fl6, |
38 | struct fib6_result *res, int flags); |
39 | void (*fib6_select_path)(const struct net *net, struct fib6_result *res, |
40 | struct flowi6 *fl6, int oif, bool oif_match, |
41 | const struct sk_buff *skb, int strict); |
42 | u32 (*ip6_mtu_from_fib6)(const struct fib6_result *res, |
43 | const struct in6_addr *daddr, |
44 | const struct in6_addr *saddr); |
45 | |
46 | int (*fib6_nh_init)(struct net *net, struct fib6_nh *fib6_nh, |
47 | struct fib6_config *cfg, gfp_t gfp_flags, |
48 | struct netlink_ext_ack *extack); |
49 | void (*fib6_nh_release)(struct fib6_nh *fib6_nh); |
50 | void (*fib6_nh_release_dsts)(struct fib6_nh *fib6_nh); |
51 | void (*fib6_update_sernum)(struct net *net, struct fib6_info *rt); |
52 | int (*ip6_del_rt)(struct net *net, struct fib6_info *rt, bool skip_notify); |
53 | void (*fib6_rt_update)(struct net *net, struct fib6_info *rt, |
54 | struct nl_info *info); |
55 | |
56 | void (*udpv6_encap_enable)(void); |
57 | void (*ndisc_send_na)(struct net_device *dev, const struct in6_addr *daddr, |
58 | const struct in6_addr *solicited_addr, |
59 | bool router, bool solicited, bool override, bool inc_opt); |
60 | #if IS_ENABLED(CONFIG_XFRM) |
61 | void (*xfrm6_local_rxpmtu)(struct sk_buff *skb, u32 mtu); |
62 | int (*xfrm6_udp_encap_rcv)(struct sock *sk, struct sk_buff *skb); |
63 | struct sk_buff *(*xfrm6_gro_udp_encap_rcv)(struct sock *sk, |
64 | struct list_head *head, |
65 | struct sk_buff *skb); |
66 | int (*xfrm6_rcv_encap)(struct sk_buff *skb, int nexthdr, __be32 spi, |
67 | int encap_type); |
68 | #endif |
69 | struct neigh_table *nd_tbl; |
70 | |
71 | int (*ipv6_fragment)(struct net *net, struct sock *sk, struct sk_buff *skb, |
72 | int (*output)(struct net *, struct sock *, struct sk_buff *)); |
73 | struct net_device *(*ipv6_dev_find)(struct net *net, const struct in6_addr *addr, |
74 | struct net_device *dev); |
75 | }; |
76 | extern const struct ipv6_stub *ipv6_stub __read_mostly; |
77 | |
78 | /* A stub used by bpf helpers. Similarly ugly as ipv6_stub */ |
79 | struct ipv6_bpf_stub { |
80 | int (*inet6_bind)(struct sock *sk, struct sockaddr *uaddr, int addr_len, |
81 | u32 flags); |
82 | struct sock *(*udp6_lib_lookup)(struct net *net, |
83 | const struct in6_addr *saddr, __be16 sport, |
84 | const struct in6_addr *daddr, __be16 dport, |
85 | int dif, int sdif, struct udp_table *tbl, |
86 | struct sk_buff *skb); |
87 | int (*ipv6_setsockopt)(struct sock *sk, int level, int optname, |
88 | sockptr_t optval, unsigned int optlen); |
89 | int (*ipv6_getsockopt)(struct sock *sk, int level, int optname, |
90 | sockptr_t optval, sockptr_t optlen); |
91 | int (*ipv6_dev_get_saddr)(struct net *net, |
92 | const struct net_device *dst_dev, |
93 | const struct in6_addr *daddr, |
94 | unsigned int prefs, |
95 | struct in6_addr *saddr); |
96 | }; |
97 | extern const struct ipv6_bpf_stub *ipv6_bpf_stub __read_mostly; |
98 | |
99 | #endif |
100 | |