include/net/ipv6_stubs.h

   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 extern const struct ipv6_stub *ipv6_stub __read_mostly;
  68
  69 /* A stub used by bpf helpers. Similarly ugly as ipv6_stub */
  70 struct ipv6_bpf_stub {
  71         int (*inet6_bind)(struct sock *sk, struct sockaddr *uaddr, int addr_len,
  72                           u32 flags);
  73         struct sock *(*udp6_lib_lookup)(struct net *net,
  74                                      const struct in6_addr *saddr, __be16 sport,
  75                                      const struct in6_addr *daddr, __be16 dport,
  76                                      int dif, int sdif, struct udp_table *tbl,
  77                                      struct sk_buff *skb);
  78 };
  79 extern const struct ipv6_bpf_stub *ipv6_bpf_stub __read_mostly;
  80
  81 #endif