LXR linux/include/net/ipv6

   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 */
  14struct fib6_info;
  15struct fib6_nh;
  16struct fib6_config;
  17struct fib6_result;
  18
  19/* This is ugly, ideally these symbols should be built
  20 * into the core kernel.
  21 */
  22struct 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};
  72extern const struct ipv6_stub *ipv6_stub __read_mostly;
  73
  74/* A stub used by bpf helpers. Similarly ugly as ipv6_stub */
  75struct 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};
  84extern const struct ipv6_bpf_stub *ipv6_bpf_stub __read_mostly;
  85
  86#endif
  87