include/tcp_diag.h

   1 #ifndef _TCP_DIAG_H_
   2 #define _TCP_DIAG_H_ 1
   3
   4 /* Replace with dymanically allocated value */
   5 #define NETLINK_TCPDIAG 4
   6
   7 /* Just some random number */
   8 #define TCPDIAG_GETSOCK 18
   9
  10 /* Socket identity */
  11 struct tcpdiag_sockid
  12 {
  13         __u16   tcpdiag_sport;
  14         __u16   tcpdiag_dport;
  15         __u32   tcpdiag_src[4];
  16         __u32   tcpdiag_dst[4];
  17         __u32   tcpdiag_if;
  18         __u32   tcpdiag_cookie[2];
  19 #define TCPDIAG_NOCOOKIE (~0U)
  20 };
  21
  22 /* Request structure */
  23
  24 struct tcpdiagreq
  25 {
  26         __u8    tcpdiag_family;         /* Family of addresses. */
  27         __u8    tcpdiag_src_len;
  28         __u8    tcpdiag_dst_len;
  29         __u8    tcpdiag_ext;            /* Query extended information */
  30
  31         struct tcpdiag_sockid id;
  32
  33         __u32   tcpdiag_states;         /* States to dump */
  34         __u32   tcpdiag_dbs;            /* Tables to dump (NI) */
  35 };
  36
  37 enum
  38 {
  39         TCPDIAG_REQ_NONE,
  40         TCPDIAG_REQ_BYTECODE,
  41 };
  42
  43 #define TCPDIAG_REQ_MAX TCPDIAG_REQ_BYTECODE
  44
  45 /* Bytecode is sequence of 4 byte commands followed by variable arguments.
  46  * All the commands identified by "code" are conditional jumps forward:
  47  * to offset cc+"yes" or to offset cc+"no". "yes" is supposed to be
  48  * length of the command and its arguments.
  49  */
  50
  51 struct tcpdiag_bc_op
  52 {
  53         unsigned char   code;
  54         unsigned char   yes;
  55         unsigned short  no;
  56 };
  57
  58 enum
  59 {
  60         TCPDIAG_BC_NOP,
  61         TCPDIAG_BC_JMP,
  62         TCPDIAG_BC_S_GE,
  63         TCPDIAG_BC_S_LE,
  64         TCPDIAG_BC_D_GE,
  65         TCPDIAG_BC_D_LE,
  66         TCPDIAG_BC_AUTO,
  67         TCPDIAG_BC_S_COND,
  68         TCPDIAG_BC_D_COND,
  69 };
  70
  71 struct tcpdiag_hostcond
  72 {
  73         __u8    family;
  74         __u8    prefix_len;
  75         int     port;
  76         __u32   addr[0];
  77 };
  78
  79 /* Base info structure. It contains socket identity (addrs/ports/cookie)
  80  * and, alas, the information shown by netstat. */
  81 struct tcpdiagmsg
  82 {
  83         __u8    tcpdiag_family;
  84         __u8    tcpdiag_state;
  85         __u8    tcpdiag_timer;
  86         __u8    tcpdiag_retrans;
  87
  88         struct tcpdiag_sockid id;
  89
  90         __u32   tcpdiag_expires;
  91         __u32   tcpdiag_rqueue;
  92         __u32   tcpdiag_wqueue;
  93         __u32   tcpdiag_uid;
  94         __u32   tcpdiag_inode;
  95 };
  96
  97 /* Extensions */
  98
  99 enum
 100 {
 101         TCPDIAG_NONE,
 102         TCPDIAG_MEMINFO,
 103         TCPDIAG_INFO,
 104 };
 105
 106 #define TCPDIAG_MAX TCPDIAG_INFO
 107
 108
 109 /* TCPDIAG_MEM */
 110
 111 struct tcpdiag_meminfo
 112 {
 113         __u32   tcpdiag_rmem;
 114         __u32   tcpdiag_wmem;
 115         __u32   tcpdiag_fmem;
 116         __u32   tcpdiag_tmem;
 117 };
 118
 119 #endif /* _TCP_DIAG_H_ */