include/linux/inet_diag.h

   1 #ifndef _INET_DIAG_H_
   2 #define _INET_DIAG_H_ 1
   3
   4 #include <linux/types.h>
   5
   6 /* Just some random number */
   7 #define TCPDIAG_GETSOCK 18
   8 #define DCCPDIAG_GETSOCK 19
   9
  10 #define INET_DIAG_GETSOCK_MAX 24
  11
  12 /* Socket identity */
  13 struct inet_diag_sockid {
  14         __be16  idiag_sport;
  15         __be16  idiag_dport;
  16         __be32  idiag_src[4];
  17         __be32  idiag_dst[4];
  18         __u32   idiag_if;
  19         __u32   idiag_cookie[2];
  20 #define INET_DIAG_NOCOOKIE (~0U)
  21 };
  22
  23 /* Request structure */
  24
  25 struct inet_diag_req {
  26         __u8    idiag_family;           /* Family of addresses. */
  27         __u8    idiag_src_len;
  28         __u8    idiag_dst_len;
  29         __u8    idiag_ext;              /* Query extended information */
  30
  31         struct inet_diag_sockid id;
  32
  33         __u32   idiag_states;           /* States to dump */
  34         __u32   idiag_dbs;              /* Tables to dump (NI) */
  35 };
  36
  37 enum {
  38         INET_DIAG_REQ_NONE,
  39         INET_DIAG_REQ_BYTECODE,
  40 };
  41
  42 #define INET_DIAG_REQ_MAX INET_DIAG_REQ_BYTECODE
  43
  44 /* Bytecode is sequence of 4 byte commands followed by variable arguments.
  45  * All the commands identified by "code" are conditional jumps forward:
  46  * to offset cc+"yes" or to offset cc+"no". "yes" is supposed to be
  47  * length of the command and its arguments.
  48  */
  49
  50 struct inet_diag_bc_op {
  51         unsigned char   code;
  52         unsigned char   yes;
  53         unsigned short  no;
  54 };
  55
  56 enum {
  57         INET_DIAG_BC_NOP,
  58         INET_DIAG_BC_JMP,
  59         INET_DIAG_BC_S_GE,
  60         INET_DIAG_BC_S_LE,
  61         INET_DIAG_BC_D_GE,
  62         INET_DIAG_BC_D_LE,
  63         INET_DIAG_BC_AUTO,
  64         INET_DIAG_BC_S_COND,
  65         INET_DIAG_BC_D_COND,
  66 };
  67
  68 struct inet_diag_hostcond {
  69         __u8    family;
  70         __u8    prefix_len;
  71         int     port;
  72         __be32  addr[0];
  73 };
  74
  75 /* Base info structure. It contains socket identity (addrs/ports/cookie)
  76  * and, alas, the information shown by netstat. */
  77 struct inet_diag_msg {
  78         __u8    idiag_family;
  79         __u8    idiag_state;
  80         __u8    idiag_timer;
  81         __u8    idiag_retrans;
  82
  83         struct inet_diag_sockid id;
  84
  85         __u32   idiag_expires;
  86         __u32   idiag_rqueue;
  87         __u32   idiag_wqueue;
  88         __u32   idiag_uid;
  89         __u32   idiag_inode;
  90 };
  91
  92 /* Extensions */
  93
  94 enum {
  95         INET_DIAG_NONE,
  96         INET_DIAG_MEMINFO,
  97         INET_DIAG_INFO,
  98         INET_DIAG_VEGASINFO,
  99         INET_DIAG_CONG,
 100 };
 101
 102 #define INET_DIAG_MAX INET_DIAG_CONG
 103
 104
 105 /* INET_DIAG_MEM */
 106
 107 struct inet_diag_meminfo {
 108         __u32   idiag_rmem;
 109         __u32   idiag_wmem;
 110         __u32   idiag_fmem;
 111         __u32   idiag_tmem;
 112 };
 113
 114 /* INET_DIAG_VEGASINFO */
 115
 116 struct tcpvegas_info {
 117         __u32   tcpv_enabled;
 118         __u32   tcpv_rttcnt;
 119         __u32   tcpv_rtt;
 120         __u32   tcpv_minrtt;
 121 };
 122
 123 #ifdef __KERNEL__
 124 struct sock;
 125 struct inet_hashinfo;
 126
 127 struct inet_diag_handler {
 128         struct inet_hashinfo    *idiag_hashinfo;
 129         void                    (*idiag_get_info)(struct sock *sk,
 130                                                   struct inet_diag_msg *r,
 131                                                   void *info);
 132         __u16                   idiag_info_size;
 133         __u16                   idiag_type;
 134 };
 135
 136 extern int  inet_diag_register(const struct inet_diag_handler *handler);
 137 extern void inet_diag_unregister(const struct inet_diag_handler *handler);
 138 #endif /* __KERNEL__ */
 139
 140 #endif /* _INET_DIAG_H_ */