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      1 #ifndef _INET_DIAG_H_
      2 #define _INET_DIAG_H_
      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 	INET_DIAG_SHUTDOWN,
    113 	INET_DIAG_DCTCPINFO,
    114 	INET_DIAG_PROTOCOL,  /* response attribute only */
    115 	INET_DIAG_SKV6ONLY,
    116 };
    117 
    118 #define INET_DIAG_MAX INET_DIAG_SKV6ONLY
    119 
    120 /* INET_DIAG_MEM */
    121 
    122 struct inet_diag_meminfo {
    123 	__u32	idiag_rmem;
    124 	__u32	idiag_wmem;
    125 	__u32	idiag_fmem;
    126 	__u32	idiag_tmem;
    127 };
    128 
    129 /* INET_DIAG_VEGASINFO */
    130 
    131 struct tcpvegas_info {
    132 	__u32	tcpv_enabled;
    133 	__u32	tcpv_rttcnt;
    134 	__u32	tcpv_rtt;
    135 	__u32	tcpv_minrtt;
    136 };
    137 
    138 /* INET_DIAG_DCTCPINFO */
    139 
    140 struct tcp_dctcp_info {
    141 	__u16	dctcp_enabled;
    142 	__u16	dctcp_ce_state;
    143 	__u32	dctcp_alpha;
    144 	__u32	dctcp_ab_ecn;
    145 	__u32	dctcp_ab_tot;
    146 };
    147 
    148 union tcp_cc_info {
    149 	struct tcpvegas_info	vegas;
    150 	struct tcp_dctcp_info	dctcp;
    151 };
    152 #endif /* _INET_DIAG_H_ */
    153