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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_REPAIR_ON 1
131#define TCP_REPAIR_OFF 0
132#define TCP_REPAIR_OFF_NO_WP -1
133
134struct tcp_repair_opt {
135 __u32 opt_code;
136 __u32 opt_val;
137};
138
139struct tcp_repair_window {
140 __u32 snd_wl1;
141 __u32 snd_wnd;
142 __u32 max_window;
143
144 __u32 rcv_wnd;
145 __u32 rcv_wup;
146};
147
148enum {
149 TCP_NO_QUEUE,
150 TCP_RECV_QUEUE,
151 TCP_SEND_QUEUE,
152 TCP_QUEUES_NR,
153};
154
155
156#define TCPI_OPT_TIMESTAMPS 1
157#define TCPI_OPT_SACK 2
158#define TCPI_OPT_WSCALE 4
159#define TCPI_OPT_ECN 8
160#define TCPI_OPT_ECN_SEEN 16
161#define TCPI_OPT_SYN_DATA 32
162
163enum tcp_ca_state {
164 TCP_CA_Open = 0,
165#define TCPF_CA_Open (1<<TCP_CA_Open)
166 TCP_CA_Disorder = 1,
167#define TCPF_CA_Disorder (1<<TCP_CA_Disorder)
168 TCP_CA_CWR = 2,
169#define TCPF_CA_CWR (1<<TCP_CA_CWR)
170 TCP_CA_Recovery = 3,
171#define TCPF_CA_Recovery (1<<TCP_CA_Recovery)
172 TCP_CA_Loss = 4
173#define TCPF_CA_Loss (1<<TCP_CA_Loss)
174};
175
176struct tcp_info {
177 __u8 tcpi_state;
178 __u8 tcpi_ca_state;
179 __u8 tcpi_retransmits;
180 __u8 tcpi_probes;
181 __u8 tcpi_backoff;
182 __u8 tcpi_options;
183 __u8 tcpi_snd_wscale : 4, tcpi_rcv_wscale : 4;
184 __u8 tcpi_delivery_rate_app_limited:1;
185
186 __u32 tcpi_rto;
187 __u32 tcpi_ato;
188 __u32 tcpi_snd_mss;
189 __u32 tcpi_rcv_mss;
190
191 __u32 tcpi_unacked;
192 __u32 tcpi_sacked;
193 __u32 tcpi_lost;
194 __u32 tcpi_retrans;
195 __u32 tcpi_fackets;
196
197
198 __u32 tcpi_last_data_sent;
199 __u32 tcpi_last_ack_sent;
200 __u32 tcpi_last_data_recv;
201 __u32 tcpi_last_ack_recv;
202
203
204 __u32 tcpi_pmtu;
205 __u32 tcpi_rcv_ssthresh;
206 __u32 tcpi_rtt;
207 __u32 tcpi_rttvar;
208 __u32 tcpi_snd_ssthresh;
209 __u32 tcpi_snd_cwnd;
210 __u32 tcpi_advmss;
211 __u32 tcpi_reordering;
212
213 __u32 tcpi_rcv_rtt;
214 __u32 tcpi_rcv_space;
215
216 __u32 tcpi_total_retrans;
217
218 __u64 tcpi_pacing_rate;
219 __u64 tcpi_max_pacing_rate;
220 __u64 tcpi_bytes_acked;
221 __u64 tcpi_bytes_received;
222 __u32 tcpi_segs_out;
223 __u32 tcpi_segs_in;
224
225 __u32 tcpi_notsent_bytes;
226 __u32 tcpi_min_rtt;
227 __u32 tcpi_data_segs_in;
228 __u32 tcpi_data_segs_out;
229
230 __u64 tcpi_delivery_rate;
231
232 __u64 tcpi_busy_time;
233 __u64 tcpi_rwnd_limited;
234 __u64 tcpi_sndbuf_limited;
235
236 __u32 tcpi_delivered;
237 __u32 tcpi_delivered_ce;
238};
239
240
241enum {
242 TCP_NLA_PAD,
243 TCP_NLA_BUSY,
244 TCP_NLA_RWND_LIMITED,
245 TCP_NLA_SNDBUF_LIMITED,
246 TCP_NLA_DATA_SEGS_OUT,
247 TCP_NLA_TOTAL_RETRANS,
248 TCP_NLA_PACING_RATE,
249 TCP_NLA_DELIVERY_RATE,
250 TCP_NLA_SND_CWND,
251 TCP_NLA_REORDERING,
252 TCP_NLA_MIN_RTT,
253 TCP_NLA_RECUR_RETRANS,
254 TCP_NLA_DELIVERY_RATE_APP_LMT,
255 TCP_NLA_SNDQ_SIZE,
256 TCP_NLA_CA_STATE,
257 TCP_NLA_SND_SSTHRESH,
258 TCP_NLA_DELIVERED,
259 TCP_NLA_DELIVERED_CE,
260
261};
262
263
264#define TCP_MD5SIG_MAXKEYLEN 80
265
266
267#define TCP_MD5SIG_FLAG_PREFIX 1
268
269struct tcp_md5sig {
270 struct __kernel_sockaddr_storage tcpm_addr;
271 __u8 tcpm_flags;
272 __u8 tcpm_prefixlen;
273 __u16 tcpm_keylen;
274 __u32 __tcpm_pad;
275 __u8 tcpm_key[TCP_MD5SIG_MAXKEYLEN];
276};
277
278
279struct tcp_diag_md5sig {
280 __u8 tcpm_family;
281 __u8 tcpm_prefixlen;
282 __u16 tcpm_keylen;
283 __be32 tcpm_addr[4];
284 __u8 tcpm_key[TCP_MD5SIG_MAXKEYLEN];
285};
286
287
288
289struct tcp_zerocopy_receive {
290 __u64 address;
291 __u32 length;
292 __u32 recv_skip_hint;
293};
294#endif
295