1#ifndef _NETINET_TCP_H
2#define _NETINET_TCP_H
3
4#include <features.h>
5
6#define TCP_NODELAY 1
7#define TCP_MAXSEG	 2
8#define TCP_CORK	 3
9#define TCP_KEEPIDLE	 4
10#define TCP_KEEPINTVL	 5
11#define TCP_KEEPCNT	 6
12#define TCP_SYNCNT	 7
13#define TCP_LINGER2	 8
14#define TCP_DEFER_ACCEPT 9
15#define TCP_WINDOW_CLAMP 10
16#define TCP_INFO	 11
17#define	TCP_QUICKACK	 12
18#define TCP_CONGESTION	 13
19#define TCP_MD5SIG	 14
20#define TCP_THIN_LINEAR_TIMEOUTS 16
21#define TCP_THIN_DUPACK  17
22#define TCP_USER_TIMEOUT 18
23#define TCP_REPAIR       19
24#define TCP_REPAIR_QUEUE 20
25#define TCP_QUEUE_SEQ    21
26#define TCP_REPAIR_OPTIONS 22
27#define TCP_FASTOPEN     23
28#define TCP_TIMESTAMP    24
29#define TCP_NOTSENT_LOWAT 25
30#define TCP_CC_INFO      26
31#define TCP_SAVE_SYN     27
32#define TCP_SAVED_SYN    28
33#define TCP_REPAIR_WINDOW 29
34
35#define TCP_ESTABLISHED  1
36#define TCP_SYN_SENT     2
37#define TCP_SYN_RECV     3
38#define TCP_FIN_WAIT1    4
39#define TCP_FIN_WAIT2    5
40#define TCP_TIME_WAIT    6
41#define TCP_CLOSE        7
42#define TCP_CLOSE_WAIT   8
43#define TCP_LAST_ACK     9
44#define TCP_LISTEN       10
45#define TCP_CLOSING      11
46
47#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
48#define TCPOPT_EOL              0
49#define TCPOPT_NOP              1
50#define TCPOPT_MAXSEG           2
51#define TCPOPT_WINDOW           3
52#define TCPOPT_SACK_PERMITTED   4
53#define TCPOPT_SACK             5
54#define TCPOPT_TIMESTAMP        8
55#define TCPOLEN_SACK_PERMITTED  2
56#define TCPOLEN_WINDOW          3
57#define TCPOLEN_MAXSEG          4
58#define TCPOLEN_TIMESTAMP       10
59
60#define SOL_TCP 6
61
62#include <sys/types.h>
63#include <sys/socket.h>
64#include <stdint.h>
65#include <endian.h>
66
67typedef uint32_t tcp_seq;
68
69#define TH_FIN 0x01
70#define TH_SYN 0x02
71#define TH_RST 0x04
72#define TH_PUSH 0x08
73#define TH_ACK 0x10
74#define TH_URG 0x20
75
76struct tcphdr {
77#ifdef _GNU_SOURCE
78#ifdef __GNUC__
79	__extension__
80#endif
81	union { struct {
82
83	uint16_t source;
84	uint16_t dest;
85	uint32_t seq;
86	uint32_t ack_seq;
87#if __BYTE_ORDER == __LITTLE_ENDIAN
88	uint16_t res1:4;
89	uint16_t doff:4;
90	uint16_t fin:1;
91	uint16_t syn:1;
92	uint16_t rst:1;
93	uint16_t psh:1;
94	uint16_t ack:1;
95	uint16_t urg:1;
96	uint16_t res2:2;
97#else
98	uint16_t doff:4;
99	uint16_t res1:4;
100	uint16_t res2:2;
101	uint16_t urg:1;
102	uint16_t ack:1;
103	uint16_t psh:1;
104	uint16_t rst:1;
105	uint16_t syn:1;
106	uint16_t fin:1;
107#endif
108	uint16_t window;
109	uint16_t check;
110	uint16_t urg_ptr;
111
112	}; struct {
113#endif
114
115	uint16_t th_sport;
116	uint16_t th_dport;
117	uint32_t th_seq;
118	uint32_t th_ack;
119#if __BYTE_ORDER == __LITTLE_ENDIAN
120	uint8_t th_x2:4;
121	uint8_t th_off:4;
122#else
123	uint8_t th_off:4;
124	uint8_t th_x2:4;
125#endif
126	uint8_t th_flags;
127	uint16_t th_win;
128	uint16_t th_sum;
129	uint16_t th_urp;
130
131#ifdef _GNU_SOURCE
132	}; };
133#endif
134};
135#endif
136
137#ifdef _GNU_SOURCE
138#define TCPI_OPT_TIMESTAMPS	1
139#define TCPI_OPT_SACK		2
140#define TCPI_OPT_WSCALE		4
141#define TCPI_OPT_ECN		8
142
143#define TCP_CA_Open		0
144#define TCP_CA_Disorder		1
145#define TCP_CA_CWR		2
146#define TCP_CA_Recovery		3
147#define TCP_CA_Loss		4
148
149struct tcp_info {
150	uint8_t tcpi_state;
151	uint8_t tcpi_ca_state;
152	uint8_t tcpi_retransmits;
153	uint8_t tcpi_probes;
154	uint8_t tcpi_backoff;
155	uint8_t tcpi_options;
156	uint8_t tcpi_snd_wscale : 4, tcpi_rcv_wscale : 4;
157	uint8_t tcpi_delivery_rate_app_limited : 1;
158	uint32_t tcpi_rto;
159	uint32_t tcpi_ato;
160	uint32_t tcpi_snd_mss;
161	uint32_t tcpi_rcv_mss;
162	uint32_t tcpi_unacked;
163	uint32_t tcpi_sacked;
164	uint32_t tcpi_lost;
165	uint32_t tcpi_retrans;
166	uint32_t tcpi_fackets;
167	uint32_t tcpi_last_data_sent;
168	uint32_t tcpi_last_ack_sent;
169	uint32_t tcpi_last_data_recv;
170	uint32_t tcpi_last_ack_recv;
171	uint32_t tcpi_pmtu;
172	uint32_t tcpi_rcv_ssthresh;
173	uint32_t tcpi_rtt;
174	uint32_t tcpi_rttvar;
175	uint32_t tcpi_snd_ssthresh;
176	uint32_t tcpi_snd_cwnd;
177	uint32_t tcpi_advmss;
178	uint32_t tcpi_reordering;
179	uint32_t tcpi_rcv_rtt;
180	uint32_t tcpi_rcv_space;
181	uint32_t tcpi_total_retrans;
182	uint64_t tcpi_pacing_rate;
183	uint64_t tcpi_max_pacing_rate;
184	uint64_t tcpi_bytes_acked;
185	uint64_t tcpi_bytes_received;
186	uint32_t tcpi_segs_out;
187	uint32_t tcpi_segs_in;
188	uint32_t tcpi_notsent_bytes;
189	uint32_t tcpi_min_rtt;
190	uint32_t tcpi_data_segs_in;
191	uint32_t tcpi_data_segs_out;
192	uint64_t tcpi_delivery_rate;
193};
194
195#define TCP_MD5SIG_MAXKEYLEN    80
196
197struct tcp_md5sig {
198	struct sockaddr_storage tcpm_addr;
199	uint16_t __tcpm_pad1;
200	uint16_t tcpm_keylen;
201	uint32_t __tcpm_pad2;
202	uint8_t tcpm_key[TCP_MD5SIG_MAXKEYLEN];
203};
204
205struct tcp_repair_window {
206	uint32_t snd_wl1;
207	uint32_t snd_wnd;
208	uint32_t max_window;
209	uint32_t rcv_wnd;
210	uint32_t rcv_wup;
211};
212
213#endif
214
215#endif
216