aboutsummaryrefslogtreecommitdiffstats
path: root/include/linux/tcp.h
diff options
context:
space:
mode:
authorDavid Howells <dhowells@redhat.com>2012-10-13 05:46:48 -0400
committerDavid Howells <dhowells@redhat.com>2012-10-13 05:46:48 -0400
commit607ca46e97a1b6594b29647d98a32d545c24bdff (patch)
tree30f4c0784bfddb57332cdc0678bd06d1e77fa185 /include/linux/tcp.h
parent08cce05c5a91f5017f4edc9866cf026908c73f9f (diff)
UAPI: (Scripted) Disintegrate include/linux
Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Michael Kerrisk <mtk.manpages@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Dave Jones <davej@redhat.com>
Diffstat (limited to 'include/linux/tcp.h')
-rw-r--r--include/linux/tcp.h208
1 files changed, 1 insertions, 207 deletions
diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index 67c789ae719c..8a7fc4be2d75 100644
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -17,217 +17,13 @@
17#ifndef _LINUX_TCP_H 17#ifndef _LINUX_TCP_H
18#define _LINUX_TCP_H 18#define _LINUX_TCP_H
19 19
20#include <linux/types.h>
21#include <asm/byteorder.h>
22#include <linux/socket.h>
23
24struct tcphdr {
25 __be16 source;
26 __be16 dest;
27 __be32 seq;
28 __be32 ack_seq;
29#if defined(__LITTLE_ENDIAN_BITFIELD)
30 __u16 res1:4,
31 doff:4,
32 fin:1,
33 syn:1,
34 rst:1,
35 psh:1,
36 ack:1,
37 urg:1,
38 ece:1,
39 cwr:1;
40#elif defined(__BIG_ENDIAN_BITFIELD)
41 __u16 doff:4,
42 res1:4,
43 cwr:1,
44 ece:1,
45 urg:1,
46 ack:1,
47 psh:1,
48 rst:1,
49 syn:1,
50 fin:1;
51#else
52#error "Adjust your <asm/byteorder.h> defines"
53#endif
54 __be16 window;
55 __sum16 check;
56 __be16 urg_ptr;
57};
58
59/*
60 * The union cast uses a gcc extension to avoid aliasing problems
61 * (union is compatible to any of its members)
62 * This means this part of the code is -fstrict-aliasing safe now.
63 */
64union tcp_word_hdr {
65 struct tcphdr hdr;
66 __be32 words[5];
67};
68
69#define tcp_flag_word(tp) ( ((union tcp_word_hdr *)(tp))->words [3])
70
71enum {
72 TCP_FLAG_CWR = __constant_cpu_to_be32(0x00800000),
73 TCP_FLAG_ECE = __constant_cpu_to_be32(0x00400000),
74 TCP_FLAG_URG = __constant_cpu_to_be32(0x00200000),
75 TCP_FLAG_ACK = __constant_cpu_to_be32(0x00100000),
76 TCP_FLAG_PSH = __constant_cpu_to_be32(0x00080000),
77 TCP_FLAG_RST = __constant_cpu_to_be32(0x00040000),
78 TCP_FLAG_SYN = __constant_cpu_to_be32(0x00020000),
79 TCP_FLAG_FIN = __constant_cpu_to_be32(0x00010000),
80 TCP_RESERVED_BITS = __constant_cpu_to_be32(0x0F000000),
81 TCP_DATA_OFFSET = __constant_cpu_to_be32(0xF0000000)
82};
83
84/*
85 * TCP general constants
86 */
87#define TCP_MSS_DEFAULT 536U /* IPv4 (RFC1122, RFC2581) */
88#define TCP_MSS_DESIRED 1220U /* IPv6 (tunneled), EDNS0 (RFC3226) */
89
90/* TCP socket options */
91#define TCP_NODELAY 1 /* Turn off Nagle's algorithm. */
92#define TCP_MAXSEG 2 /* Limit MSS */
93#define TCP_CORK 3 /* Never send partially complete segments */
94#define TCP_KEEPIDLE 4 /* Start keeplives after this period */
95#define TCP_KEEPINTVL 5 /* Interval between keepalives */
96#define TCP_KEEPCNT 6 /* Number of keepalives before death */
97#define TCP_SYNCNT 7 /* Number of SYN retransmits */
98#define TCP_LINGER2 8 /* Life time of orphaned FIN-WAIT-2 state */
99#define TCP_DEFER_ACCEPT 9 /* Wake up listener only when data arrive */
100#define TCP_WINDOW_CLAMP 10 /* Bound advertised window */
101#define TCP_INFO 11 /* Information about this connection. */
102#define TCP_QUICKACK 12 /* Block/reenable quick acks */
103#define TCP_CONGESTION 13 /* Congestion control algorithm */
104#define TCP_MD5SIG 14 /* TCP MD5 Signature (RFC2385) */
105#define TCP_COOKIE_TRANSACTIONS 15 /* TCP Cookie Transactions */
106#define TCP_THIN_LINEAR_TIMEOUTS 16 /* Use linear timeouts for thin streams*/
107#define TCP_THIN_DUPACK 17 /* Fast retrans. after 1 dupack */
108#define TCP_USER_TIMEOUT 18 /* How long for loss retry before timeout */
109#define TCP_REPAIR 19 /* TCP sock is under repair right now */
110#define TCP_REPAIR_QUEUE 20
111#define TCP_QUEUE_SEQ 21
112#define TCP_REPAIR_OPTIONS 22
113#define TCP_FASTOPEN 23 /* Enable FastOpen on listeners */
114
115struct tcp_repair_opt {
116 __u32 opt_code;
117 __u32 opt_val;
118};
119
120enum {
121 TCP_NO_QUEUE,
122 TCP_RECV_QUEUE,
123 TCP_SEND_QUEUE,
124 TCP_QUEUES_NR,
125};
126
127/* for TCP_INFO socket option */
128#define TCPI_OPT_TIMESTAMPS 1
129#define TCPI_OPT_SACK 2
130#define TCPI_OPT_WSCALE 4
131#define TCPI_OPT_ECN 8 /* ECN was negociated at TCP session init */
132#define TCPI_OPT_ECN_SEEN 16 /* we received at least one packet with ECT */
133
134enum tcp_ca_state {
135 TCP_CA_Open = 0,
136#define TCPF_CA_Open (1<<TCP_CA_Open)
137 TCP_CA_Disorder = 1,
138#define TCPF_CA_Disorder (1<<TCP_CA_Disorder)
139 TCP_CA_CWR = 2,
140#define TCPF_CA_CWR (1<<TCP_CA_CWR)
141 TCP_CA_Recovery = 3,
142#define TCPF_CA_Recovery (1<<TCP_CA_Recovery)
143 TCP_CA_Loss = 4
144#define TCPF_CA_Loss (1<<TCP_CA_Loss)
145};
146
147struct tcp_info {
148 __u8 tcpi_state;
149 __u8 tcpi_ca_state;
150 __u8 tcpi_retransmits;
151 __u8 tcpi_probes;
152 __u8 tcpi_backoff;
153 __u8 tcpi_options;
154 __u8 tcpi_snd_wscale : 4, tcpi_rcv_wscale : 4;
155
156 __u32 tcpi_rto;
157 __u32 tcpi_ato;
158 __u32 tcpi_snd_mss;
159 __u32 tcpi_rcv_mss;
160
161 __u32 tcpi_unacked;
162 __u32 tcpi_sacked;
163 __u32 tcpi_lost;
164 __u32 tcpi_retrans;
165 __u32 tcpi_fackets;
166
167 /* Times. */
168 __u32 tcpi_last_data_sent;
169 __u32 tcpi_last_ack_sent; /* Not remembered, sorry. */
170 __u32 tcpi_last_data_recv;
171 __u32 tcpi_last_ack_recv;
172
173 /* Metrics. */
174 __u32 tcpi_pmtu;
175 __u32 tcpi_rcv_ssthresh;
176 __u32 tcpi_rtt;
177 __u32 tcpi_rttvar;
178 __u32 tcpi_snd_ssthresh;
179 __u32 tcpi_snd_cwnd;
180 __u32 tcpi_advmss;
181 __u32 tcpi_reordering;
182
183 __u32 tcpi_rcv_rtt;
184 __u32 tcpi_rcv_space;
185
186 __u32 tcpi_total_retrans;
187};
188
189/* for TCP_MD5SIG socket option */
190#define TCP_MD5SIG_MAXKEYLEN 80
191
192struct tcp_md5sig {
193 struct __kernel_sockaddr_storage tcpm_addr; /* address associated */
194 __u16 __tcpm_pad1; /* zero */
195 __u16 tcpm_keylen; /* key length */
196 __u32 __tcpm_pad2; /* zero */
197 __u8 tcpm_key[TCP_MD5SIG_MAXKEYLEN]; /* key (binary) */
198};
199
200/* for TCP_COOKIE_TRANSACTIONS (TCPCT) socket option */
201#define TCP_COOKIE_MIN 8 /* 64-bits */
202#define TCP_COOKIE_MAX 16 /* 128-bits */
203#define TCP_COOKIE_PAIR_SIZE (2*TCP_COOKIE_MAX)
204
205/* Flags for both getsockopt and setsockopt */
206#define TCP_COOKIE_IN_ALWAYS (1 << 0) /* Discard SYN without cookie */
207#define TCP_COOKIE_OUT_NEVER (1 << 1) /* Prohibit outgoing cookies,
208 * supercedes everything. */
209
210/* Flags for getsockopt */
211#define TCP_S_DATA_IN (1 << 2) /* Was data received? */
212#define TCP_S_DATA_OUT (1 << 3) /* Was data sent? */
213
214/* TCP_COOKIE_TRANSACTIONS data */
215struct tcp_cookie_transactions {
216 __u16 tcpct_flags; /* see above */
217 __u8 __tcpct_pad1; /* zero */
218 __u8 tcpct_cookie_desired; /* bytes */
219 __u16 tcpct_s_data_desired; /* bytes of variable data */
220 __u16 tcpct_used; /* bytes in value */
221 __u8 tcpct_value[TCP_MSS_DEFAULT];
222};
223
224#ifdef __KERNEL__
225 20
226#include <linux/skbuff.h> 21#include <linux/skbuff.h>
227#include <linux/dmaengine.h> 22#include <linux/dmaengine.h>
228#include <net/sock.h> 23#include <net/sock.h>
229#include <net/inet_connection_sock.h> 24#include <net/inet_connection_sock.h>
230#include <net/inet_timewait_sock.h> 25#include <net/inet_timewait_sock.h>
26#include <uapi/linux/tcp.h>
231 27
232static inline struct tcphdr *tcp_hdr(const struct sk_buff *skb) 28static inline struct tcphdr *tcp_hdr(const struct sk_buff *skb)
233{ 29{
@@ -595,6 +391,4 @@ static inline int fastopen_init_queue(struct sock *sk, int backlog)
595 return 0; 391 return 0;
596} 392}
597 393
598#endif /* __KERNEL__ */
599
600#endif /* _LINUX_TCP_H */ 394#endif /* _LINUX_TCP_H */
generated by cgit v1.2.2 (git 2.25.0) at 2026-02-21 16:49:51 -0500