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 int (*xfrm6_rcv_encap)(struct sk_buff *skb, int nexthdr, __be32 spi, 64 int encap_type); 65 #endif 66 struct neigh_table *nd_tbl; 67 68 int (*ipv6_fragment)(struct net *net, struct sock *sk, struct sk_buff *skb, 69 int (*output)(struct net *, struct sock *, struct sk_buff *)); 70 struct net_device *(*ipv6_dev_find)(struct net *net, const struct in6_addr *addr, 71 struct net_device *dev); 72 }; 73 extern const struct ipv6_stub *ipv6_stub __read_mostly; 74 75 /* A stub used by bpf helpers. Similarly ugly as ipv6_stub */ 76 struct ipv6_bpf_stub { 77 int (*inet6_bind)(struct sock *sk, struct sockaddr *uaddr, int addr_len, 78 u32 flags); 79 struct sock *(*udp6_lib_lookup)(struct net *net, 80 const struct in6_addr *saddr, __be16 sport, 81 const struct in6_addr *daddr, __be16 dport, 82 int dif, int sdif, struct udp_table *tbl, 83 struct sk_buff *skb); 84 int (*ipv6_setsockopt)(struct sock *sk, int level, int optname, 85 sockptr_t optval, unsigned int optlen); 86 int (*ipv6_getsockopt)(struct sock *sk, int level, int optname, 87 sockptr_t optval, sockptr_t optlen); 88 }; 89 extern const struct ipv6_bpf_stub *ipv6_bpf_stub __read_mostly; 90 91 #endif 92