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_update_sernum)(struct net *net, struct fib6_info *rt); 51 int (*ip6_del_rt)(struct net *net, struct fib6_info *rt, bool skip_notify); 52 void (*fib6_rt_update)(struct net *net, struct fib6_info *rt, 53 struct nl_info *info); 54 55 void (*udpv6_encap_enable)(void); 56 void (*ndisc_send_na)(struct net_device *dev, const struct in6_addr *daddr, 57 const struct in6_addr *solicited_addr, 58 bool router, bool solicited, bool override, bool inc_opt); 59 #if IS_ENABLED(CONFIG_XFRM) 60 void (*xfrm6_local_rxpmtu)(struct sk_buff *skb, u32 mtu); 61 int (*xfrm6_udp_encap_rcv)(struct sock *sk, struct sk_buff *skb); 62 int (*xfrm6_rcv_encap)(struct sk_buff *skb, int nexthdr, __be32 spi, 63 int encap_type); 64 #endif 65 struct neigh_table *nd_tbl; 66 67 int (*ipv6_fragment)(struct net *net, struct sock *sk, struct sk_buff *skb, 68 int (*output)(struct net *, struct sock *, struct sk_buff *)); 69 struct net_device *(*ipv6_dev_find)(struct net *net, const struct in6_addr *addr, 70 struct net_device *dev); 71 }; 72 extern const struct ipv6_stub *ipv6_stub __read_mostly; 73 74 /* A stub used by bpf helpers. Similarly ugly as ipv6_stub */ 75 struct ipv6_bpf_stub { 76 int (*inet6_bind)(struct sock *sk, struct sockaddr *uaddr, int addr_len, 77 u32 flags); 78 struct sock *(*udp6_lib_lookup)(struct net *net, 79 const struct in6_addr *saddr, __be16 sport, 80 const struct in6_addr *daddr, __be16 dport, 81 int dif, int sdif, struct udp_table *tbl, 82 struct sk_buff *skb); 83 }; 84 extern const struct ipv6_bpf_stub *ipv6_bpf_stub __read_mostly; 85 86 #endif 87