include/linux/inet_diag.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _INET_DIAG_H_
   3 #define _INET_DIAG_H_ 1
   4
   5 #include <net/netlink.h>
   6 #include <uapi/linux/inet_diag.h>
   7
   8 struct inet_hashinfo;
   9
  10 struct inet_diag_handler {
  11         struct module   *owner;
  12         void            (*dump)(struct sk_buff *skb,
  13                                 struct netlink_callback *cb,
  14                                 const struct inet_diag_req_v2 *r);
  15
  16         int             (*dump_one)(struct netlink_callback *cb,
  17                                     const struct inet_diag_req_v2 *req);
  18
  19         void            (*idiag_get_info)(struct sock *sk,
  20                                           struct inet_diag_msg *r,
  21                                           void *info);
  22
  23         int             (*idiag_get_aux)(struct sock *sk,
  24                                          bool net_admin,
  25                                          struct sk_buff *skb);
  26
  27         size_t          (*idiag_get_aux_size)(struct sock *sk,
  28                                               bool net_admin);
  29
  30         int             (*destroy)(struct sk_buff *in_skb,
  31                                    const struct inet_diag_req_v2 *req);
  32
  33         __u16           idiag_type;
  34         __u16           idiag_info_size;
  35 };
  36
  37 struct bpf_sk_storage_diag;
  38 struct inet_diag_dump_data {
  39         struct nlattr *req_nlas[__INET_DIAG_REQ_MAX];
  40 #define inet_diag_nla_bc req_nlas[INET_DIAG_REQ_BYTECODE]
  41 #define inet_diag_nla_bpf_stgs req_nlas[INET_DIAG_REQ_SK_BPF_STORAGES]
  42
  43         struct bpf_sk_storage_diag *bpf_stg_diag;
  44 };
  45
  46 struct inet_connection_sock;
  47 int inet_sk_diag_fill(struct sock *sk, struct inet_connection_sock *icsk,
  48                       struct sk_buff *skb, struct netlink_callback *cb,
  49                       const struct inet_diag_req_v2 *req,
  50                       u16 nlmsg_flags, bool net_admin);
  51 void inet_diag_dump_icsk(struct inet_hashinfo *h, struct sk_buff *skb,
  52                          struct netlink_callback *cb,
  53                          const struct inet_diag_req_v2 *r);
  54 int inet_diag_dump_one_icsk(struct inet_hashinfo *hashinfo,
  55                             struct netlink_callback *cb,
  56                             const struct inet_diag_req_v2 *req);
  57
  58 struct sock *inet_diag_find_one_icsk(struct net *net,
  59                                      struct inet_hashinfo *hashinfo,
  60                                      const struct inet_diag_req_v2 *req);
  61
  62 int inet_diag_bc_sk(const struct nlattr *_bc, struct sock *sk);
  63
  64 void inet_diag_msg_common_fill(struct inet_diag_msg *r, struct sock *sk);
  65
  66 static inline size_t inet_diag_msg_attrs_size(void)
  67 {
  68         return    nla_total_size(1)  /* INET_DIAG_SHUTDOWN */
  69                 + nla_total_size(1)  /* INET_DIAG_TOS */
  70 #if IS_ENABLED(CONFIG_IPV6)
  71                 + nla_total_size(1)  /* INET_DIAG_TCLASS */
  72                 + nla_total_size(1)  /* INET_DIAG_SKV6ONLY */
  73 #endif
  74                 + nla_total_size(4)  /* INET_DIAG_MARK */
  75                 + nla_total_size(4)  /* INET_DIAG_CLASS_ID */
  76 #ifdef CONFIG_SOCK_CGROUP_DATA
  77                 + nla_total_size_64bit(sizeof(u64))  /* INET_DIAG_CGROUP_ID */
  78 #endif
  79                 + nla_total_size(sizeof(struct inet_diag_sockopt))
  80                                                      /* INET_DIAG_SOCKOPT */
  81                 ;
  82 }
  83 int inet_diag_msg_attrs_fill(struct sock *sk, struct sk_buff *skb,
  84                              struct inet_diag_msg *r, int ext,
  85                              struct user_namespace *user_ns, bool net_admin);
  86
  87 extern int  inet_diag_register(const struct inet_diag_handler *handler);
  88 extern void inet_diag_unregister(const struct inet_diag_handler *handler);
  89 #endif /* _INET_DIAG_H_ */