1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2#ifndef _INET_DIAG_H_
3#define _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 INET_DIAG_REQ_SK_BPF_STORAGES,
68 INET_DIAG_REQ_PROTOCOL,
69 __INET_DIAG_REQ_MAX,
70};
71
72#define INET_DIAG_REQ_MAX (__INET_DIAG_REQ_MAX - 1)
73
74/* Bytecode is sequence of 4 byte commands followed by variable arguments.
75 * All the commands identified by "code" are conditional jumps forward:
76 * to offset cc+"yes" or to offset cc+"no". "yes" is supposed to be
77 * length of the command and its arguments.
78 */
79
80struct inet_diag_bc_op {
81 unsigned char code;
82 unsigned char yes;
83 unsigned short no;
84};
85
86enum {
87 INET_DIAG_BC_NOP,
88 INET_DIAG_BC_JMP,
89 INET_DIAG_BC_S_GE,
90 INET_DIAG_BC_S_LE,
91 INET_DIAG_BC_D_GE,
92 INET_DIAG_BC_D_LE,
93 INET_DIAG_BC_AUTO,
94 INET_DIAG_BC_S_COND,
95 INET_DIAG_BC_D_COND,
96 INET_DIAG_BC_DEV_COND, /* u32 ifindex */
97 INET_DIAG_BC_MARK_COND,
98 INET_DIAG_BC_S_EQ,
99 INET_DIAG_BC_D_EQ,
100 INET_DIAG_BC_CGROUP_COND, /* u64 cgroup v2 ID */
101};
102
103struct inet_diag_hostcond {
104 __u8 family;
105 __u8 prefix_len;
106 int port;
107 __be32 addr[];
108};
109
110struct inet_diag_markcond {
111 __u32 mark;
112 __u32 mask;
113};
114
115/* Base info structure. It contains socket identity (addrs/ports/cookie)
116 * and, alas, the information shown by netstat. */
117struct inet_diag_msg {
118 __u8 idiag_family;
119 __u8 idiag_state;
120 __u8 idiag_timer;
121 __u8 idiag_retrans;
122
123 struct inet_diag_sockid id;
124
125 __u32 idiag_expires;
126 __u32 idiag_rqueue;
127 __u32 idiag_wqueue;
128 __u32 idiag_uid;
129 __u32 idiag_inode;
130};
131
132enum {
133 IDIAG_TIMER_OFF,
134 IDIAG_TIMER_ON,
135 IDIAG_TIMER_KEEPALIVE,
136 IDIAG_TIMER_TIMEWAIT,
137 IDIAG_TIMER_PROBE0,
138 IDIAG_TIMER_DELACK,
139};
140
141/* Extensions */
142
143enum {
144 INET_DIAG_NONE,
145 INET_DIAG_MEMINFO,
146 INET_DIAG_INFO,
147 INET_DIAG_VEGASINFO,
148 INET_DIAG_CONG,
149 INET_DIAG_TOS,
150 INET_DIAG_TCLASS,
151 INET_DIAG_SKMEMINFO,
152 INET_DIAG_SHUTDOWN,
153
154 /*
155 * Next extensions cannot be requested in struct inet_diag_req_v2:
156 * its field idiag_ext has only 8 bits.
157 */
158
159 INET_DIAG_DCTCPINFO, /* request as INET_DIAG_VEGASINFO */
160 INET_DIAG_PROTOCOL, /* response attribute only */
161 INET_DIAG_SKV6ONLY,
162 INET_DIAG_LOCALS,
163 INET_DIAG_PEERS,
164 INET_DIAG_PAD,
165 INET_DIAG_MARK, /* only with CAP_NET_ADMIN */
166 INET_DIAG_BBRINFO, /* request as INET_DIAG_VEGASINFO */
167 INET_DIAG_CLASS_ID, /* request as INET_DIAG_TCLASS */
168 INET_DIAG_MD5SIG,
169 INET_DIAG_ULP_INFO,
170 INET_DIAG_SK_BPF_STORAGES,
171 INET_DIAG_CGROUP_ID,
172 INET_DIAG_SOCKOPT,
173 __INET_DIAG_MAX,
174};
175
176#define INET_DIAG_MAX (__INET_DIAG_MAX - 1)
177
178enum {
179 INET_ULP_INFO_UNSPEC,
180 INET_ULP_INFO_NAME,
181 INET_ULP_INFO_TLS,
182 INET_ULP_INFO_MPTCP,
183 __INET_ULP_INFO_MAX,
184};
185#define INET_ULP_INFO_MAX (__INET_ULP_INFO_MAX - 1)
186
187/* INET_DIAG_MEM */
188
189struct inet_diag_meminfo {
190 __u32 idiag_rmem;
191 __u32 idiag_wmem;
192 __u32 idiag_fmem;
193 __u32 idiag_tmem;
194};
195
196/* INET_DIAG_SOCKOPT */
197
198struct inet_diag_sockopt {
199 __u8 recverr:1,
200 is_icsk:1,
201 freebind:1,
202 hdrincl:1,
203 mc_loop:1,
204 transparent:1,
205 mc_all:1,
206 nodefrag:1;
207 __u8 bind_address_no_port:1,
208 recverr_rfc4884:1,
209 defer_connect:1,
210 unused:5;
211};
212
213/* INET_DIAG_VEGASINFO */
214
215struct tcpvegas_info {
216 __u32 tcpv_enabled;
217 __u32 tcpv_rttcnt;
218 __u32 tcpv_rtt;
219 __u32 tcpv_minrtt;
220};
221
222/* INET_DIAG_DCTCPINFO */
223
224struct tcp_dctcp_info {
225 __u16 dctcp_enabled;
226 __u16 dctcp_ce_state;
227 __u32 dctcp_alpha;
228 __u32 dctcp_ab_ecn;
229 __u32 dctcp_ab_tot;
230};
231
232/* INET_DIAG_BBRINFO */
233
234struct tcp_bbr_info {
235 /* u64 bw: max-filtered BW (app throughput) estimate in Byte per sec: */
236 __u32 bbr_bw_lo; /* lower 32 bits of bw */
237 __u32 bbr_bw_hi; /* upper 32 bits of bw */
238 __u32 bbr_min_rtt; /* min-filtered RTT in uSec */
239 __u32 bbr_pacing_gain; /* pacing gain shifted left 8 bits */
240 __u32 bbr_cwnd_gain; /* cwnd gain shifted left 8 bits */
241};
242
243union tcp_cc_info {
244 struct tcpvegas_info vegas;
245 struct tcp_dctcp_info dctcp;
246 struct tcp_bbr_info bbr;
247};
248#endif /* _INET_DIAG_H_ */