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18#ifndef _UAPI_LINUX_TCP_H
19#define _UAPI_LINUX_TCP_H
20
21#include <linux/types.h>
22#include <asm/byteorder.h>
23#include <linux/socket.h>
24
25struct tcphdr {
26 __be16 source;
27 __be16 dest;
28 __be32 seq;
29 __be32 ack_seq;
30#if defined(__LITTLE_ENDIAN_BITFIELD)
31 __u16 res1:4,
32 doff:4,
33 fin:1,
34 syn:1,
35 rst:1,
36 psh:1,
37 ack:1,
38 urg:1,
39 ece:1,
40 cwr:1;
41#elif defined(__BIG_ENDIAN_BITFIELD)
42 __u16 doff:4,
43 res1:4,
44 cwr:1,
45 ece:1,
46 urg:1,
47 ack:1,
48 psh:1,
49 rst:1,
50 syn:1,
51 fin:1;
52#else
53#error "Adjust your <asm/byteorder.h> defines"
54#endif
55 __be16 window;
56 __sum16 check;
57 __be16 urg_ptr;
58};
59
60
61
62
63
64
65union tcp_word_hdr {
66 struct tcphdr hdr;
67 __be32 words[5];
68};
69
70#define tcp_flag_word(tp) ( ((union tcp_word_hdr *)(tp))->words [3])
71
72enum {
73 TCP_FLAG_CWR = __constant_cpu_to_be32(0x00800000),
74 TCP_FLAG_ECE = __constant_cpu_to_be32(0x00400000),
75 TCP_FLAG_URG = __constant_cpu_to_be32(0x00200000),
76 TCP_FLAG_ACK = __constant_cpu_to_be32(0x00100000),
77 TCP_FLAG_PSH = __constant_cpu_to_be32(0x00080000),
78 TCP_FLAG_RST = __constant_cpu_to_be32(0x00040000),
79 TCP_FLAG_SYN = __constant_cpu_to_be32(0x00020000),
80 TCP_FLAG_FIN = __constant_cpu_to_be32(0x00010000),
81 TCP_RESERVED_BITS = __constant_cpu_to_be32(0x0F000000),
82 TCP_DATA_OFFSET = __constant_cpu_to_be32(0xF0000000)
83};
84
85
86
87
88#define TCP_MSS_DEFAULT 536U
89#define TCP_MSS_DESIRED 1220U
90
91
92#define TCP_NODELAY 1
93#define TCP_MAXSEG 2
94#define TCP_CORK 3
95#define TCP_KEEPIDLE 4
96#define TCP_KEEPINTVL 5
97#define TCP_KEEPCNT 6
98#define TCP_SYNCNT 7
99#define TCP_LINGER2 8
100#define TCP_DEFER_ACCEPT 9
101#define TCP_WINDOW_CLAMP 10
102#define TCP_INFO 11
103#define TCP_QUICKACK 12
104#define TCP_CONGESTION 13
105#define TCP_MD5SIG 14
106#define TCP_THIN_LINEAR_TIMEOUTS 16
107#define TCP_THIN_DUPACK 17
108#define TCP_USER_TIMEOUT 18
109#define TCP_REPAIR 19
110#define TCP_REPAIR_QUEUE 20
111#define TCP_QUEUE_SEQ 21
112#define TCP_REPAIR_OPTIONS 22
113#define TCP_FASTOPEN 23
114#define TCP_TIMESTAMP 24
115#define TCP_NOTSENT_LOWAT 25
116#define TCP_CC_INFO 26
117#define TCP_SAVE_SYN 27
118#define TCP_SAVED_SYN 28
119#define TCP_REPAIR_WINDOW 29
120#define TCP_FASTOPEN_CONNECT 30
121#define TCP_ULP 31
122#define TCP_MD5SIG_EXT 32
123#define TCP_FASTOPEN_KEY 33
124#define TCP_FASTOPEN_NO_COOKIE 34
125#define TCP_ZEROCOPY_RECEIVE 35
126#define TCP_INQ 36
127
128#define TCP_CM_INQ TCP_INQ
129
130#define TCP_TX_DELAY 37
131
132
133#define TCP_REPAIR_ON 1
134#define TCP_REPAIR_OFF 0
135#define TCP_REPAIR_OFF_NO_WP -1
136
137struct tcp_repair_opt {
138 __u32 opt_code;
139 __u32 opt_val;
140};
141
142struct tcp_repair_window {
143 __u32 snd_wl1;
144 __u32 snd_wnd;
145 __u32 max_window;
146
147 __u32 rcv_wnd;
148 __u32 rcv_wup;
149};
150
151enum {
152 TCP_NO_QUEUE,
153 TCP_RECV_QUEUE,
154 TCP_SEND_QUEUE,
155 TCP_QUEUES_NR,
156};
157
158
159#define TCPI_OPT_TIMESTAMPS 1
160#define TCPI_OPT_SACK 2
161#define TCPI_OPT_WSCALE 4
162#define TCPI_OPT_ECN 8
163#define TCPI_OPT_ECN_SEEN 16
164#define TCPI_OPT_SYN_DATA 32
165
166
167
168
169
170
171enum tcp_ca_state {
172
173
174
175
176 TCP_CA_Open = 0,
177#define TCPF_CA_Open (1<<TCP_CA_Open)
178
179
180
181
182
183
184 TCP_CA_Disorder = 1,
185#define TCPF_CA_Disorder (1<<TCP_CA_Disorder)
186
187
188
189
190
191 TCP_CA_CWR = 2,
192#define TCPF_CA_CWR (1<<TCP_CA_CWR)
193
194
195
196
197 TCP_CA_Recovery = 3,
198#define TCPF_CA_Recovery (1<<TCP_CA_Recovery)
199
200
201
202 TCP_CA_Loss = 4
203#define TCPF_CA_Loss (1<<TCP_CA_Loss)
204};
205
206struct tcp_info {
207 __u8 tcpi_state;
208 __u8 tcpi_ca_state;
209 __u8 tcpi_retransmits;
210 __u8 tcpi_probes;
211 __u8 tcpi_backoff;
212 __u8 tcpi_options;
213 __u8 tcpi_snd_wscale : 4, tcpi_rcv_wscale : 4;
214 __u8 tcpi_delivery_rate_app_limited:1;
215
216 __u32 tcpi_rto;
217 __u32 tcpi_ato;
218 __u32 tcpi_snd_mss;
219 __u32 tcpi_rcv_mss;
220
221 __u32 tcpi_unacked;
222 __u32 tcpi_sacked;
223 __u32 tcpi_lost;
224 __u32 tcpi_retrans;
225 __u32 tcpi_fackets;
226
227
228 __u32 tcpi_last_data_sent;
229 __u32 tcpi_last_ack_sent;
230 __u32 tcpi_last_data_recv;
231 __u32 tcpi_last_ack_recv;
232
233
234 __u32 tcpi_pmtu;
235 __u32 tcpi_rcv_ssthresh;
236 __u32 tcpi_rtt;
237 __u32 tcpi_rttvar;
238 __u32 tcpi_snd_ssthresh;
239 __u32 tcpi_snd_cwnd;
240 __u32 tcpi_advmss;
241 __u32 tcpi_reordering;
242
243 __u32 tcpi_rcv_rtt;
244 __u32 tcpi_rcv_space;
245
246 __u32 tcpi_total_retrans;
247
248 __u64 tcpi_pacing_rate;
249 __u64 tcpi_max_pacing_rate;
250 __u64 tcpi_bytes_acked;
251 __u64 tcpi_bytes_received;
252 __u32 tcpi_segs_out;
253 __u32 tcpi_segs_in;
254
255 __u32 tcpi_notsent_bytes;
256 __u32 tcpi_min_rtt;
257 __u32 tcpi_data_segs_in;
258 __u32 tcpi_data_segs_out;
259
260 __u64 tcpi_delivery_rate;
261
262 __u64 tcpi_busy_time;
263 __u64 tcpi_rwnd_limited;
264 __u64 tcpi_sndbuf_limited;
265
266 __u32 tcpi_delivered;
267 __u32 tcpi_delivered_ce;
268
269 __u64 tcpi_bytes_sent;
270 __u64 tcpi_bytes_retrans;
271 __u32 tcpi_dsack_dups;
272 __u32 tcpi_reord_seen;
273};
274
275
276enum {
277 TCP_NLA_PAD,
278 TCP_NLA_BUSY,
279 TCP_NLA_RWND_LIMITED,
280 TCP_NLA_SNDBUF_LIMITED,
281 TCP_NLA_DATA_SEGS_OUT,
282 TCP_NLA_TOTAL_RETRANS,
283 TCP_NLA_PACING_RATE,
284 TCP_NLA_DELIVERY_RATE,
285 TCP_NLA_SND_CWND,
286 TCP_NLA_REORDERING,
287 TCP_NLA_MIN_RTT,
288 TCP_NLA_RECUR_RETRANS,
289 TCP_NLA_DELIVERY_RATE_APP_LMT,
290 TCP_NLA_SNDQ_SIZE,
291 TCP_NLA_CA_STATE,
292 TCP_NLA_SND_SSTHRESH,
293 TCP_NLA_DELIVERED,
294 TCP_NLA_DELIVERED_CE,
295 TCP_NLA_BYTES_SENT,
296 TCP_NLA_BYTES_RETRANS,
297 TCP_NLA_DSACK_DUPS,
298 TCP_NLA_REORD_SEEN,
299 TCP_NLA_SRTT,
300};
301
302
303#define TCP_MD5SIG_MAXKEYLEN 80
304
305
306#define TCP_MD5SIG_FLAG_PREFIX 1
307
308struct tcp_md5sig {
309 struct __kernel_sockaddr_storage tcpm_addr;
310 __u8 tcpm_flags;
311 __u8 tcpm_prefixlen;
312 __u16 tcpm_keylen;
313 __u32 __tcpm_pad;
314 __u8 tcpm_key[TCP_MD5SIG_MAXKEYLEN];
315};
316
317
318struct tcp_diag_md5sig {
319 __u8 tcpm_family;
320 __u8 tcpm_prefixlen;
321 __u16 tcpm_keylen;
322 __be32 tcpm_addr[4];
323 __u8 tcpm_key[TCP_MD5SIG_MAXKEYLEN];
324};
325
326
327
328struct tcp_zerocopy_receive {
329 __u64 address;
330 __u32 length;
331 __u32 recv_skip_hint;
332};
333#endif
334