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 struct inet_diag_req_v2 {
  38         __u8    sdiag_family;
  39         __u8    sdiag_protocol;
  40         __u8    idiag_ext;
  41         __u8    pad;
  42         __u32   idiag_states;
  43         struct inet_diag_sockid id;
  44 };
  45
  46 enum {
  47         INET_DIAG_REQ_NONE,
  48         INET_DIAG_REQ_BYTECODE,
  49 };
  50
  51 #define INET_DIAG_REQ_MAX INET_DIAG_REQ_BYTECODE
  52
  53 /* Bytecode is sequence of 4 byte commands followed by variable arguments.
  54  * All the commands identified by "code" are conditional jumps forward:
  55  * to offset cc+"yes" or to offset cc+"no". "yes" is supposed to be
  56  * length of the command and its arguments.
  57  */
  58
  59 struct inet_diag_bc_op {
  60         unsigned char   code;
  61         unsigned char   yes;
  62         unsigned short  no;
  63 };
  64
  65 enum {
  66         INET_DIAG_BC_NOP,
  67         INET_DIAG_BC_JMP,
  68         INET_DIAG_BC_S_GE,
  69         INET_DIAG_BC_S_LE,
  70         INET_DIAG_BC_D_GE,
  71         INET_DIAG_BC_D_LE,
  72         INET_DIAG_BC_AUTO,
  73         INET_DIAG_BC_S_COND,
  74         INET_DIAG_BC_D_COND,
  75 };
  76
  77 struct inet_diag_hostcond {
  78         __u8    family;
  79         __u8    prefix_len;
  80         int     port;
  81         __be32  addr[0];
  82 };
  83
  84 /* Base info structure. It contains socket identity (addrs/ports/cookie)
  85  * and, alas, the information shown by netstat. */
  86 struct inet_diag_msg {
  87         __u8    idiag_family;
  88         __u8    idiag_state;
  89         __u8    idiag_timer;
  90         __u8    idiag_retrans;
  91
  92         struct inet_diag_sockid id;
  93
  94         __u32   idiag_expires;
  95         __u32   idiag_rqueue;
  96         __u32   idiag_wqueue;
  97         __u32   idiag_uid;
  98         __u32   idiag_inode;
  99 };
 100
 101 /* Extensions */
 102
 103 enum {
 104         INET_DIAG_NONE,
 105         INET_DIAG_MEMINFO,
 106         INET_DIAG_INFO,
 107         INET_DIAG_VEGASINFO,
 108         INET_DIAG_CONG,
 109         INET_DIAG_TOS,
 110         INET_DIAG_TCLASS,
 111         INET_DIAG_SKMEMINFO,
 112 };
 113
 114 #define INET_DIAG_MAX INET_DIAG_SKMEMINFO
 115
 116
 117 /* INET_DIAG_MEM */
 118
 119 struct inet_diag_meminfo {
 120         __u32   idiag_rmem;
 121         __u32   idiag_wmem;
 122         __u32   idiag_fmem;
 123         __u32   idiag_tmem;
 124 };
 125
 126 /* INET_DIAG_VEGASINFO */
 127
 128 struct tcpvegas_info {
 129         __u32   tcpv_enabled;
 130         __u32   tcpv_rttcnt;
 131         __u32   tcpv_rtt;
 132         __u32   tcpv_minrtt;
 133 };
 134
 135 #ifdef __KERNEL__
 136 struct sock;
 137 struct inet_hashinfo;
 138 struct nlattr;
 139 struct nlmsghdr;
 140 struct sk_buff;
 141 struct netlink_callback;
 142
 143 struct inet_diag_handler {
 144         void                    (*dump)(struct sk_buff *skb,
 145                                         struct netlink_callback *cb,
 146                                         struct inet_diag_req_v2 *r,
 147                                         struct nlattr *bc);
 148
 149         int                     (*dump_one)(struct sk_buff *in_skb,
 150                                         const struct nlmsghdr *nlh,
 151                                         struct inet_diag_req_v2 *req);
 152
 153         void                    (*idiag_get_info)(struct sock *sk,
 154                                                   struct inet_diag_msg *r,
 155                                                   void *info);
 156         __u16                   idiag_type;
 157 };
 158
 159 struct inet_connection_sock;
 160 int inet_sk_diag_fill(struct sock *sk, struct inet_connection_sock *icsk,
 161                               struct sk_buff *skb, struct inet_diag_req_v2 *req,
 162                               u32 pid, u32 seq, u16 nlmsg_flags,
 163                               const struct nlmsghdr *unlh);
 164 void inet_diag_dump_icsk(struct inet_hashinfo *h, struct sk_buff *skb,
 165                 struct netlink_callback *cb, struct inet_diag_req_v2 *r,
 166                 struct nlattr *bc);
 167 int inet_diag_dump_one_icsk(struct inet_hashinfo *hashinfo,
 168                 struct sk_buff *in_skb, const struct nlmsghdr *nlh,
 169                 struct inet_diag_req_v2 *req);
 170
 171 int inet_diag_bc_sk(const struct nlattr *_bc, struct sock *sk);
 172
 173 extern int  inet_diag_register(const struct inet_diag_handler *handler);
 174 extern void inet_diag_unregister(const struct inet_diag_handler *handler);
 175 #endif /* __KERNEL__ */
 176
 177 #endif /* _INET_DIAG_H_ */