1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2#ifndef _UAPI_INET_DIAG_H_
3#define _UAPI_INET_DIAG_H_
4
5#include <linux/types.h>
6
7/* Just some random number */
8#define TCPDIAG_GETSOCK 18
9#define DCCPDIAG_GETSOCK 19
10
11#define INET_DIAG_GETSOCK_MAX 24
12
13/* Socket identity */
14struct inet_diag_sockid {
15 __be16 idiag_sport;
16 __be16 idiag_dport;
17 __be32 idiag_src[4];
18 __be32 idiag_dst[4];
19 __u32 idiag_if;
20 __u32 idiag_cookie[2];
21#define INET_DIAG_NOCOOKIE (~0U)
22};
23
24/* Request structure */
25
26struct inet_diag_req {
27 __u8 idiag_family; /* Family of addresses. */
28 __u8 idiag_src_len;
29 __u8 idiag_dst_len;
30 __u8 idiag_ext; /* Query extended information */
31
32 struct inet_diag_sockid id;
33
34 __u32 idiag_states; /* States to dump */
35 __u32 idiag_dbs; /* Tables to dump (NI) */
36};
37
38struct inet_diag_req_v2 {
39 __u8 sdiag_family;
40 __u8 sdiag_protocol;
41 __u8 idiag_ext;
42 __u8 pad;
43 __u32 idiag_states;
44 struct inet_diag_sockid id;
45};
46
47/*
48 * SOCK_RAW sockets require the underlied protocol to be
49 * additionally specified so we can use @pad member for
50 * this, but we can't rename it because userspace programs
51 * still may depend on this name. Instead lets use another
52 * structure definition as an alias for struct
53 * @inet_diag_req_v2.
54 */
55struct inet_diag_req_raw {
56 __u8 sdiag_family;
57 __u8 sdiag_protocol;
58 __u8 idiag_ext;
59 __u8 sdiag_raw_protocol;
60 __u32 idiag_states;
61 struct inet_diag_sockid id;
62};
63
64enum {
65 INET_DIAG_REQ_NONE,
66 INET_DIAG_REQ_BYTECODE,
67};
68
69#define INET_DIAG_REQ_MAX INET_DIAG_REQ_BYTECODE
70
71/* Bytecode is sequence of 4 byte commands followed by variable arguments.
72 * All the commands identified by "code" are conditional jumps forward:
73 * to offset cc+"yes" or to offset cc+"no". "yes" is supposed to be
74 * length of the command and its arguments.
75 */
76
77struct inet_diag_bc_op {
78 unsigned char code;
79 unsigned char yes;
80 unsigned short no;
81};
82
83enum {
84 INET_DIAG_BC_NOP,
85 INET_DIAG_BC_JMP,
86 INET_DIAG_BC_S_GE,
87 INET_DIAG_BC_S_LE,
88 INET_DIAG_BC_D_GE,
89 INET_DIAG_BC_D_LE,
90 INET_DIAG_BC_AUTO,
91 INET_DIAG_BC_S_COND,
92 INET_DIAG_BC_D_COND,
93 INET_DIAG_BC_DEV_COND, /* u32 ifindex */
94 INET_DIAG_BC_MARK_COND,
95 INET_DIAG_BC_S_EQ,
96 INET_DIAG_BC_D_EQ,
97};
98
99struct inet_diag_hostcond {
100 __u8 family;
101 __u8 prefix_len;
102 int port;
103 __be32 addr[0];
104};
105
106struct inet_diag_markcond {
107 __u32 mark;
108 __u32 mask;
109};
110
111/* Base info structure. It contains socket identity (addrs/ports/cookie)
112 * and, alas, the information shown by netstat. */
113struct inet_diag_msg {
114 __u8 idiag_family;
115 __u8 idiag_state;
116 __u8 idiag_timer;
117 __u8 idiag_retrans;
118
119 struct inet_diag_sockid id;
120
121 __u32 idiag_expires;
122 __u32 idiag_rqueue;
123 __u32 idiag_wqueue;
124 __u32 idiag_uid;
125 __u32 idiag_inode;
126};
127
128/* Extensions */
129
130enum {
131 INET_DIAG_NONE,
132 INET_DIAG_MEMINFO,
133 INET_DIAG_INFO,
134 INET_DIAG_VEGASINFO,
135 INET_DIAG_CONG,
136 INET_DIAG_TOS,
137 INET_DIAG_TCLASS,
138 INET_DIAG_SKMEMINFO,
139 INET_DIAG_SHUTDOWN,
140
141 /*
142 * Next extenstions cannot be requested in struct inet_diag_req_v2:
143 * its field idiag_ext has only 8 bits.
144 */
145
146 INET_DIAG_DCTCPINFO, /* request as INET_DIAG_VEGASINFO */
147 INET_DIAG_PROTOCOL, /* response attribute only */
148 INET_DIAG_SKV6ONLY,
149 INET_DIAG_LOCALS,
150 INET_DIAG_PEERS,
151 INET_DIAG_PAD,
152 INET_DIAG_MARK, /* only with CAP_NET_ADMIN */
153 INET_DIAG_BBRINFO, /* request as INET_DIAG_VEGASINFO */
154 INET_DIAG_CLASS_ID, /* request as INET_DIAG_TCLASS */
155 INET_DIAG_MD5SIG,
156 __INET_DIAG_MAX,
157};
158
159#define INET_DIAG_MAX (__INET_DIAG_MAX - 1)
160
161/* INET_DIAG_MEM */
162
163struct inet_diag_meminfo {
164 __u32 idiag_rmem;
165 __u32 idiag_wmem;
166 __u32 idiag_fmem;
167 __u32 idiag_tmem;
168};
169
170/* INET_DIAG_VEGASINFO */
171
172struct tcpvegas_info {
173 __u32 tcpv_enabled;
174 __u32 tcpv_rttcnt;
175 __u32 tcpv_rtt;
176 __u32 tcpv_minrtt;
177};
178
179/* INET_DIAG_DCTCPINFO */
180
181struct tcp_dctcp_info {
182 __u16 dctcp_enabled;
183 __u16 dctcp_ce_state;
184 __u32 dctcp_alpha;
185 __u32 dctcp_ab_ecn;
186 __u32 dctcp_ab_tot;
187};
188
189/* INET_DIAG_BBRINFO */
190
191struct tcp_bbr_info {
192 /* u64 bw: max-filtered BW (app throughput) estimate in Byte per sec: */
193 __u32 bbr_bw_lo; /* lower 32 bits of bw */
194 __u32 bbr_bw_hi; /* upper 32 bits of bw */
195 __u32 bbr_min_rtt; /* min-filtered RTT in uSec */
196 __u32 bbr_pacing_gain; /* pacing gain shifted left 8 bits */
197 __u32 bbr_cwnd_gain; /* cwnd gain shifted left 8 bits */
198};
199
200union tcp_cc_info {
201 struct tcpvegas_info vegas;
202 struct tcp_dctcp_info dctcp;
203 struct tcp_bbr_info bbr;
204};
205#endif /* _UAPI_INET_DIAG_H_ */
206