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