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_ */
141