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 */
14 struct 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 
26 struct 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 
38 struct 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  */
55 struct 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 
64 enum {
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 
80 struct inet_diag_bc_op {
81 	unsigned char	code;
82 	unsigned char	yes;
83 	unsigned short	no;
84 };
85 
86 enum {
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 
103 struct inet_diag_hostcond {
104 	__u8	family;
105 	__u8	prefix_len;
106 	int	port;
107 	__be32	addr[];
108 };
109 
110 struct 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. */
117 struct 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 
132 /* Extensions */
133 
134 enum {
135 	INET_DIAG_NONE,
136 	INET_DIAG_MEMINFO,
137 	INET_DIAG_INFO,
138 	INET_DIAG_VEGASINFO,
139 	INET_DIAG_CONG,
140 	INET_DIAG_TOS,
141 	INET_DIAG_TCLASS,
142 	INET_DIAG_SKMEMINFO,
143 	INET_DIAG_SHUTDOWN,
144 
145 	/*
146 	 * Next extenstions cannot be requested in struct inet_diag_req_v2:
147 	 * its field idiag_ext has only 8 bits.
148 	 */
149 
150 	INET_DIAG_DCTCPINFO,	/* request as INET_DIAG_VEGASINFO */
151 	INET_DIAG_PROTOCOL,	/* response attribute only */
152 	INET_DIAG_SKV6ONLY,
153 	INET_DIAG_LOCALS,
154 	INET_DIAG_PEERS,
155 	INET_DIAG_PAD,
156 	INET_DIAG_MARK,		/* only with CAP_NET_ADMIN */
157 	INET_DIAG_BBRINFO,	/* request as INET_DIAG_VEGASINFO */
158 	INET_DIAG_CLASS_ID,	/* request as INET_DIAG_TCLASS */
159 	INET_DIAG_MD5SIG,
160 	INET_DIAG_ULP_INFO,
161 	INET_DIAG_SK_BPF_STORAGES,
162 	INET_DIAG_CGROUP_ID,
163 	INET_DIAG_SOCKOPT,
164 	__INET_DIAG_MAX,
165 };
166 
167 #define INET_DIAG_MAX (__INET_DIAG_MAX - 1)
168 
169 enum {
170 	INET_ULP_INFO_UNSPEC,
171 	INET_ULP_INFO_NAME,
172 	INET_ULP_INFO_TLS,
173 	INET_ULP_INFO_MPTCP,
174 	__INET_ULP_INFO_MAX,
175 };
176 #define INET_ULP_INFO_MAX (__INET_ULP_INFO_MAX - 1)
177 
178 /* INET_DIAG_MEM */
179 
180 struct inet_diag_meminfo {
181 	__u32	idiag_rmem;
182 	__u32	idiag_wmem;
183 	__u32	idiag_fmem;
184 	__u32	idiag_tmem;
185 };
186 
187 /* INET_DIAG_SOCKOPT */
188 
189 struct inet_diag_sockopt {
190 	__u8	recverr:1,
191 		is_icsk:1,
192 		freebind:1,
193 		hdrincl:1,
194 		mc_loop:1,
195 		transparent:1,
196 		mc_all:1,
197 		nodefrag:1;
198 	__u8	bind_address_no_port:1,
199 		recverr_rfc4884:1,
200 		defer_connect:1,
201 		unused:5;
202 };
203 
204 /* INET_DIAG_VEGASINFO */
205 
206 struct tcpvegas_info {
207 	__u32	tcpv_enabled;
208 	__u32	tcpv_rttcnt;
209 	__u32	tcpv_rtt;
210 	__u32	tcpv_minrtt;
211 };
212 
213 /* INET_DIAG_DCTCPINFO */
214 
215 struct tcp_dctcp_info {
216 	__u16	dctcp_enabled;
217 	__u16	dctcp_ce_state;
218 	__u32	dctcp_alpha;
219 	__u32	dctcp_ab_ecn;
220 	__u32	dctcp_ab_tot;
221 };
222 
223 /* INET_DIAG_BBRINFO */
224 
225 struct tcp_bbr_info {
226 	/* u64 bw: max-filtered BW (app throughput) estimate in Byte per sec: */
227 	__u32	bbr_bw_lo;		/* lower 32 bits of bw */
228 	__u32	bbr_bw_hi;		/* upper 32 bits of bw */
229 	__u32	bbr_min_rtt;		/* min-filtered RTT in uSec */
230 	__u32	bbr_pacing_gain;	/* pacing gain shifted left 8 bits */
231 	__u32	bbr_cwnd_gain;		/* cwnd gain shifted left 8 bits */
232 };
233 
234 union tcp_cc_info {
235 	struct tcpvegas_info	vegas;
236 	struct tcp_dctcp_info	dctcp;
237 	struct tcp_bbr_info	bbr;
238 };
239 #endif /* _UAPI_INET_DIAG_H_ */
240