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 };
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 
77 struct inet_diag_bc_op {
78 	unsigned char	code;
79 	unsigned char	yes;
80 	unsigned short	no;
81 };
82 
83 enum {
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 
99 struct inet_diag_hostcond {
100 	__u8	family;
101 	__u8	prefix_len;
102 	int	port;
103 	__be32	addr[0];
104 };
105 
106 struct 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. */
113 struct 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 
130 enum {
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 
163 struct 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 
172 struct 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 
181 struct 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 
191 struct 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 
200 union 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