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 #include <net/ipv6.h>
  13
  14 /* structs from net/ip6_fib.h */
  15 struct fib6_info;
  16 struct fib6_nh;
  17 struct fib6_config;
  18 struct fib6_result;
  19
  20 /* This is ugly, ideally these symbols should be built
  21  * into the core kernel.
  22  */
  23 struct ipv6_stub {
  24         int (*ipv6_sock_mc_join)(struct sock *sk, int ifindex,
  25                                  const struct in6_addr *addr);
  26         int (*ipv6_sock_mc_drop)(struct sock *sk, int ifindex,
  27                                  const struct in6_addr *addr);
  28         struct dst_entry *(*ipv6_dst_lookup_flow)(struct net *net,
  29                                                   const struct sock *sk,
  30                                                   struct flowi6 *fl6,
  31                                                   const struct in6_addr *final_dst);
  32         int (*ipv6_route_input)(struct sk_buff *skb);
  33
  34         struct fib6_table *(*fib6_get_table)(struct net *net, u32 id);
  35         int (*fib6_lookup)(struct net *net, int oif, struct flowi6 *fl6,
  36                            struct fib6_result *res, int flags);
  37         int (*fib6_table_lookup)(struct net *net, struct fib6_table *table,
  38                                  int oif, struct flowi6 *fl6,
  39                                  struct fib6_result *res, int flags);
  40         void (*fib6_select_path)(const struct net *net, struct fib6_result *res,
  41                                  struct flowi6 *fl6, int oif, bool oif_match,
  42                                  const struct sk_buff *skb, int strict);
  43         u32 (*ip6_mtu_from_fib6)(const struct fib6_result *res,
  44                                  const struct in6_addr *daddr,
  45                                  const struct in6_addr *saddr);
  46
  47         int (*fib6_nh_init)(struct net *net, struct fib6_nh *fib6_nh,
  48                             struct fib6_config *cfg, gfp_t gfp_flags,
  49                             struct netlink_ext_ack *extack);
  50         void (*fib6_nh_release)(struct fib6_nh *fib6_nh);
  51         void (*fib6_nh_release_dsts)(struct fib6_nh *fib6_nh);
  52         void (*fib6_update_sernum)(struct net *net, struct fib6_info *rt);
  53         int (*ip6_del_rt)(struct net *net, struct fib6_info *rt, bool skip_notify);
  54         void (*fib6_rt_update)(struct net *net, struct fib6_info *rt,
  55                                struct nl_info *info);
  56
  57         void (*udpv6_encap_enable)(void);
  58         void (*ndisc_send_na)(struct net_device *dev, const struct in6_addr *daddr,
  59                               const struct in6_addr *solicited_addr,
  60                               bool router, bool solicited, bool override, bool inc_opt);
  61 #if IS_ENABLED(CONFIG_XFRM)
  62         void (*xfrm6_local_rxpmtu)(struct sk_buff *skb, u32 mtu);
  63         int (*xfrm6_udp_encap_rcv)(struct sock *sk, struct sk_buff *skb);
  64         struct sk_buff *(*xfrm6_gro_udp_encap_rcv)(struct sock *sk,
  65                                                    struct list_head *head,
  66                                                    struct sk_buff *skb);
  67         int (*xfrm6_rcv_encap)(struct sk_buff *skb, int nexthdr, __be32 spi,
  68                                int encap_type);
  69 #endif
  70         struct neigh_table *nd_tbl;
  71
  72         int (*ipv6_fragment)(struct net *net, struct sock *sk, struct sk_buff *skb,
  73                              int (*output)(struct net *, struct sock *, struct sk_buff *));
  74         struct net_device *(*ipv6_dev_find)(struct net *net, const struct in6_addr *addr,
  75                                             struct net_device *dev);
  76         int (*ip6_xmit)(const struct sock *sk, struct sk_buff *skb, struct flowi6 *fl6,
  77                         __u32 mark, struct ipv6_txoptions *opt, int tclass, u32 priority);
  78 };
  79 extern const struct ipv6_stub *ipv6_stub __read_mostly;
  80
  81 /* A stub used by bpf helpers. Similarly ugly as ipv6_stub */
  82 struct ipv6_bpf_stub {
  83         int (*inet6_bind)(struct sock *sk, struct sockaddr *uaddr, int addr_len,
  84                           u32 flags);
  85         struct sock *(*udp6_lib_lookup)(const struct net *net,
  86                                      const struct in6_addr *saddr, __be16 sport,
  87                                      const struct in6_addr *daddr, __be16 dport,
  88                                      int dif, int sdif, struct udp_table *tbl,
  89                                      struct sk_buff *skb);
  90         int (*ipv6_setsockopt)(struct sock *sk, int level, int optname,
  91                                sockptr_t optval, unsigned int optlen);
  92         int (*ipv6_getsockopt)(struct sock *sk, int level, int optname,
  93                                sockptr_t optval, sockptr_t optlen);
  94         int (*ipv6_dev_get_saddr)(struct net *net,
  95                                   const struct net_device *dst_dev,
  96                                   const struct in6_addr *daddr,
  97                                   unsigned int prefs,
  98                                   struct in6_addr *saddr);
  99 };
 100 extern const struct ipv6_bpf_stub *ipv6_bpf_stub __read_mostly;
 101
 102 #endif