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musl/include/netinet/tcp.h

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initial check-in, version 0.5.0
2011-02-12 05:22:29 +00:00
#ifndef _NETINET_TCP_H
#define _NETINET_TCP_H
default features: make musl usable without feature test macros the old behavior of exposing nothing except plain ISO C can be obtained by defining __STRICT_ANSI__ or using a compiler option (such as -std=c99) that predefines it. the new default featureset is POSIX with XSI plus _BSD_SOURCE. any explicit feature test macros will inhibit the default. installation docs have also been updated to reflect this change.
2012-09-08 03:13:55 +00:00
#include <features.h>
more bits junk (tcp.h)
2011-09-18 19:39:52 +00:00
#define TCP_NODELAY 1
support _BSD_SOURCE feature test macro patch by Isaac Dunham. matched closely (maybe not exact) to glibc's idea of what _BSD_SOURCE should make visible.
2012-05-23 01:52:08 +00:00
#define TCP_MAXSEG 2
#define TCP_CORK 3
#define TCP_KEEPIDLE 4
#define TCP_KEEPINTVL 5
#define TCP_KEEPCNT 6
#define TCP_SYNCNT 7
#define TCP_LINGER2 8
#define TCP_DEFER_ACCEPT 9
#define TCP_WINDOW_CLAMP 10
#define TCP_INFO 11
#define TCP_QUICKACK 12
#define TCP_CONGESTION 13
#define TCP_MD5SIG 14
add new linux tcp socket option flags to netinet/tcp.h
2013-03-23 19:49:38 +00:00
#define TCP_THIN_LINEAR_TIMEOUTS 16
#define TCP_THIN_DUPACK 17
#define TCP_USER_TIMEOUT 18
#define TCP_REPAIR 19
#define TCP_REPAIR_QUEUE 20
#define TCP_QUEUE_SEQ 21
#define TCP_REPAIR_OPTIONS 22
#define TCP_FASTOPEN 23
#define TCP_TIMESTAMP 24
add TCP_NOTSENT_LOWAT tcp socket option, new in linux v3.12
2013-11-23 23:04:55 +00:00
#define TCP_NOTSENT_LOWAT 25
update netinet/tcp.h for linux v4.2 TCP_CC_INFO is a new socket option to get congestion control info without netlink (union tcp_cc_info is in linux/inet_diag.h kernel header). linux commit 6e9250f59ef9efb932c84850cd221f22c2a03c4a TCP_SAVE_SYN, TCP_SAVED_SYN socket options are for saving and getting the SYN headers of passive connections in a server application. linux commit cd8ae85299d54155702a56811b2e035e63064d3d Add new tcpi_* fields to struct tcp_info implementing RFC4898 counters. linux commit 2efd055c53c06b7e89c167c98069bab9afce7e59
2015-09-08 19:50:26 +00:00
#define TCP_CC_INFO 26
#define TCP_SAVE_SYN 27
#define TCP_SAVED_SYN 28
add TCP_REPAIR_WINDOW to netinet/tcp.h from linux v4.8 another kernel internal state exposure for checkpoint-restore. see linux commit b1ed4c4fa9a5ccf325184fd90edc50978ef6e33a
2016-10-09 17:02:08 +00:00
#define TCP_REPAIR_WINDOW 29
TCP_* is in the reserved namespace for tcp.h; make use of that
2012-09-08 03:56:32 +00:00
add linux tcp state enums
2013-10-14 05:28:19 +00:00
#define TCP_ESTABLISHED 1
#define TCP_SYN_SENT 2
#define TCP_SYN_RECV 3
#define TCP_FIN_WAIT1 4
#define TCP_FIN_WAIT2 5
#define TCP_TIME_WAIT 6
#define TCP_CLOSE 7
#define TCP_CLOSE_WAIT 8
#define TCP_LAST_ACK 9
#define TCP_LISTEN 10
#define TCP_CLOSING 11
TCP_* is in the reserved namespace for tcp.h; make use of that
2012-09-08 03:56:32 +00:00
#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
netinet/tcp: Add TCPOPT, TCPOLEN constants Programs such as iptables depend on these constants, which can also be found defined in other libcs. Since only TCP_* is reserved as part of tcp.h's namespace, we hide them behind _BSD_SOURCE (and therefore _DEFAULT_SOURCE) to expose them by default, but keep it standard conforming.
2015-12-30 22:24:02 +00:00
#define TCPOPT_EOL 0
#define TCPOPT_NOP 1
#define TCPOPT_MAXSEG 2
#define TCPOPT_WINDOW 3
#define TCPOPT_SACK_PERMITTED 4
#define TCPOPT_SACK 5
#define TCPOPT_TIMESTAMP 8
#define TCPOLEN_SACK_PERMITTED 2
#define TCPOLEN_WINDOW 3
#define TCPOLEN_MAXSEG 4
#define TCPOLEN_TIMESTAMP 10
SOL_TCP is nonstandard and not in the reserved namespace alternatively, we could define it in sys/socket.h since SO* is reserved there, and tcp.h includes sys/socket.h in extensions mode. note that SOL_TCP is simply wrong and it's only here for compatibility with broken applications. the correct argument to pass for setting TCP socket options is IPPROTO_TCP, which of course has the same value as SOL_TCP but works everywhere.
2013-01-31 05:49:53 +00:00
#define SOL_TCP 6
netinet/tcp: Add TCPOPT, TCPOLEN constants Programs such as iptables depend on these constants, which can also be found defined in other libcs. Since only TCP_* is reserved as part of tcp.h's namespace, we hide them behind _BSD_SOURCE (and therefore _DEFAULT_SOURCE) to expose them by default, but keep it standard conforming.
2015-12-30 22:24:02 +00:00
TCP_* is in the reserved namespace for tcp.h; make use of that
2012-09-08 03:56:32 +00:00
#include <sys/types.h>
#include <sys/socket.h>
fix use of legacy u_intN_t types in netinet/tcp.h policy is to avoid using these types except where they are needed for namespace conformance. C99-style stdint.h types should be used instead.
2014-02-05 22:22:26 +00:00
#include <stdint.h>
add support for BSD struct tcphdr in netinet/tcp.h there are two versions of this structure: the BSD version and the GNU version. previously only the GNU version was supported. the only way to support both simultaneously is with an anonymous union, which was a nonstandard extension prior to C11, so some effort is made to avoid breakage with compilers which do not support anonymous unions. this commit is based on a patch by Timo Teräs, but with some changes. in particular, the GNU version of the structure is not exposed unless _GNU_SOURCE is defined; this both avoids namespace pollution and dependency on anonymous unions in the default feature profile.
2014-02-05 21:55:30 +00:00
#include <endian.h>
fix use of legacy u_intN_t types in netinet/tcp.h policy is to avoid using these types except where they are needed for namespace conformance. C99-style stdint.h types should be used instead.
2014-02-05 22:22:26 +00:00
typedef uint32_t tcp_seq;
add struct tcphdr in netinet/tcp.h
2013-08-30 20:50:00 +00:00
add support for BSD struct tcphdr in netinet/tcp.h there are two versions of this structure: the BSD version and the GNU version. previously only the GNU version was supported. the only way to support both simultaneously is with an anonymous union, which was a nonstandard extension prior to C11, so some effort is made to avoid breakage with compilers which do not support anonymous unions. this commit is based on a patch by Timo Teräs, but with some changes. in particular, the GNU version of the structure is not exposed unless _GNU_SOURCE is defined; this both avoids namespace pollution and dependency on anonymous unions in the default feature profile.
2014-02-05 21:55:30 +00:00
#define TH_FIN 0x01
#define TH_SYN 0x02
#define TH_RST 0x04
#define TH_PUSH 0x08
#define TH_ACK 0x10
#define TH_URG 0x20
struct tcphdr {
only expose struct tcphdr under _GNU_SOURCE the BSD and GNU versions of this structure differ, so exposing it in the default _BSD_SOURCE profile is possibly problematic. both versions could be simultaneously supported with anonymous unions if needed in the future, but for now, just omitting it except under _GNU_SOURCE should be safe.
2013-08-30 21:06:17 +00:00
#ifdef _GNU_SOURCE
add support for BSD struct tcphdr in netinet/tcp.h there are two versions of this structure: the BSD version and the GNU version. previously only the GNU version was supported. the only way to support both simultaneously is with an anonymous union, which was a nonstandard extension prior to C11, so some effort is made to avoid breakage with compilers which do not support anonymous unions. this commit is based on a patch by Timo Teräs, but with some changes. in particular, the GNU version of the structure is not exposed unless _GNU_SOURCE is defined; this both avoids namespace pollution and dependency on anonymous unions in the default feature profile.
2014-02-05 21:55:30 +00:00
#ifdef __GNUC__
__extension__
#endif
union { struct {
fix use of legacy u_intN_t types in netinet/tcp.h policy is to avoid using these types except where they are needed for namespace conformance. C99-style stdint.h types should be used instead.
2014-02-05 22:22:26 +00:00
uint16_t source;
uint16_t dest;
uint32_t seq;
uint32_t ack_seq;
add struct tcphdr in netinet/tcp.h
2013-08-30 20:50:00 +00:00
#if __BYTE_ORDER == __LITTLE_ENDIAN
fix use of legacy u_intN_t types in netinet/tcp.h policy is to avoid using these types except where they are needed for namespace conformance. C99-style stdint.h types should be used instead.
2014-02-05 22:22:26 +00:00
uint16_t res1:4;
uint16_t doff:4;
uint16_t fin:1;
uint16_t syn:1;
uint16_t rst:1;
uint16_t psh:1;
uint16_t ack:1;
uint16_t urg:1;
uint16_t res2:2;
add struct tcphdr in netinet/tcp.h
2013-08-30 20:50:00 +00:00
#else
fix use of legacy u_intN_t types in netinet/tcp.h policy is to avoid using these types except where they are needed for namespace conformance. C99-style stdint.h types should be used instead.
2014-02-05 22:22:26 +00:00
uint16_t doff:4;
uint16_t res1:4;
uint16_t res2:2;
uint16_t urg:1;
uint16_t ack:1;
uint16_t psh:1;
uint16_t rst:1;
uint16_t syn:1;
uint16_t fin:1;
add struct tcphdr in netinet/tcp.h
2013-08-30 20:50:00 +00:00
#endif
fix use of legacy u_intN_t types in netinet/tcp.h policy is to avoid using these types except where they are needed for namespace conformance. C99-style stdint.h types should be used instead.
2014-02-05 22:22:26 +00:00
uint16_t window;
uint16_t check;
uint16_t urg_ptr;
add support for BSD struct tcphdr in netinet/tcp.h there are two versions of this structure: the BSD version and the GNU version. previously only the GNU version was supported. the only way to support both simultaneously is with an anonymous union, which was a nonstandard extension prior to C11, so some effort is made to avoid breakage with compilers which do not support anonymous unions. this commit is based on a patch by Timo Teräs, but with some changes. in particular, the GNU version of the structure is not exposed unless _GNU_SOURCE is defined; this both avoids namespace pollution and dependency on anonymous unions in the default feature profile.
2014-02-05 21:55:30 +00:00
}; struct {
#endif
fix use of legacy u_intN_t types in netinet/tcp.h policy is to avoid using these types except where they are needed for namespace conformance. C99-style stdint.h types should be used instead.
2014-02-05 22:22:26 +00:00
uint16_t th_sport;
uint16_t th_dport;
uint32_t th_seq;
uint32_t th_ack;
add support for BSD struct tcphdr in netinet/tcp.h there are two versions of this structure: the BSD version and the GNU version. previously only the GNU version was supported. the only way to support both simultaneously is with an anonymous union, which was a nonstandard extension prior to C11, so some effort is made to avoid breakage with compilers which do not support anonymous unions. this commit is based on a patch by Timo Teräs, but with some changes. in particular, the GNU version of the structure is not exposed unless _GNU_SOURCE is defined; this both avoids namespace pollution and dependency on anonymous unions in the default feature profile.
2014-02-05 21:55:30 +00:00
#if __BYTE_ORDER == __LITTLE_ENDIAN
fix use of legacy u_intN_t types in netinet/tcp.h policy is to avoid using these types except where they are needed for namespace conformance. C99-style stdint.h types should be used instead.
2014-02-05 22:22:26 +00:00
uint8_t th_x2:4;
uint8_t th_off:4;
add support for BSD struct tcphdr in netinet/tcp.h there are two versions of this structure: the BSD version and the GNU version. previously only the GNU version was supported. the only way to support both simultaneously is with an anonymous union, which was a nonstandard extension prior to C11, so some effort is made to avoid breakage with compilers which do not support anonymous unions. this commit is based on a patch by Timo Teräs, but with some changes. in particular, the GNU version of the structure is not exposed unless _GNU_SOURCE is defined; this both avoids namespace pollution and dependency on anonymous unions in the default feature profile.
2014-02-05 21:55:30 +00:00
#else
fix use of legacy u_intN_t types in netinet/tcp.h policy is to avoid using these types except where they are needed for namespace conformance. C99-style stdint.h types should be used instead.
2014-02-05 22:22:26 +00:00
uint8_t th_off:4;
uint8_t th_x2:4;
add support for BSD struct tcphdr in netinet/tcp.h there are two versions of this structure: the BSD version and the GNU version. previously only the GNU version was supported. the only way to support both simultaneously is with an anonymous union, which was a nonstandard extension prior to C11, so some effort is made to avoid breakage with compilers which do not support anonymous unions. this commit is based on a patch by Timo Teräs, but with some changes. in particular, the GNU version of the structure is not exposed unless _GNU_SOURCE is defined; this both avoids namespace pollution and dependency on anonymous unions in the default feature profile.
2014-02-05 21:55:30 +00:00
#endif
fix use of legacy u_intN_t types in netinet/tcp.h policy is to avoid using these types except where they are needed for namespace conformance. C99-style stdint.h types should be used instead.
2014-02-05 22:22:26 +00:00
uint8_t th_flags;
uint16_t th_win;
uint16_t th_sum;
uint16_t th_urp;
add support for BSD struct tcphdr in netinet/tcp.h there are two versions of this structure: the BSD version and the GNU version. previously only the GNU version was supported. the only way to support both simultaneously is with an anonymous union, which was a nonstandard extension prior to C11, so some effort is made to avoid breakage with compilers which do not support anonymous unions. this commit is based on a patch by Timo Teräs, but with some changes. in particular, the GNU version of the structure is not exposed unless _GNU_SOURCE is defined; this both avoids namespace pollution and dependency on anonymous unions in the default feature profile.
2014-02-05 21:55:30 +00:00
#ifdef _GNU_SOURCE
}; };
#endif
add struct tcphdr in netinet/tcp.h
2013-08-30 20:50:00 +00:00
};
add support for BSD struct tcphdr in netinet/tcp.h there are two versions of this structure: the BSD version and the GNU version. previously only the GNU version was supported. the only way to support both simultaneously is with an anonymous union, which was a nonstandard extension prior to C11, so some effort is made to avoid breakage with compilers which do not support anonymous unions. this commit is based on a patch by Timo Teräs, but with some changes. in particular, the GNU version of the structure is not exposed unless _GNU_SOURCE is defined; this both avoids namespace pollution and dependency on anonymous unions in the default feature profile.
2014-02-05 21:55:30 +00:00
#endif
add TCP_INFO and TCP_MD5SIG socket option related structures
2013-12-18 11:53:11 +00:00
add support for BSD struct tcphdr in netinet/tcp.h there are two versions of this structure: the BSD version and the GNU version. previously only the GNU version was supported. the only way to support both simultaneously is with an anonymous union, which was a nonstandard extension prior to C11, so some effort is made to avoid breakage with compilers which do not support anonymous unions. this commit is based on a patch by Timo Teräs, but with some changes. in particular, the GNU version of the structure is not exposed unless _GNU_SOURCE is defined; this both avoids namespace pollution and dependency on anonymous unions in the default feature profile.
2014-02-05 21:55:30 +00:00
#ifdef _GNU_SOURCE
add TCP_INFO and TCP_MD5SIG socket option related structures
2013-12-18 11:53:11 +00:00
#define TCPI_OPT_TIMESTAMPS 1
#define TCPI_OPT_SACK 2
#define TCPI_OPT_WSCALE 4
#define TCPI_OPT_ECN 8
#define TCP_CA_Open 0
#define TCP_CA_Disorder 1
#define TCP_CA_CWR 2
#define TCP_CA_Recovery 3
#define TCP_CA_Loss 4
make brace placement in public header struct definitions consistent placing the opening brace on the same line as the struct keyword/tag is the style I prefer and seems to be the prevailing practice in more recent additions. these changes were generated by the command: find include/ arch/*/bits -name '*.h' \ -exec sed -i '/^struct [^;{]*$/{N;s/\n/ /;}' {} + and subsequently checked by hand to ensure that the regex did not pick up any false positives.
2016-07-03 18:40:11 +00:00
struct tcp_info {
fix use of legacy u_intN_t types in netinet/tcp.h policy is to avoid using these types except where they are needed for namespace conformance. C99-style stdint.h types should be used instead.
2014-02-05 22:22:26 +00:00
uint8_t tcpi_state;
uint8_t tcpi_ca_state;
uint8_t tcpi_retransmits;
uint8_t tcpi_probes;
uint8_t tcpi_backoff;
uint8_t tcpi_options;
uint8_t tcpi_snd_wscale : 4, tcpi_rcv_wscale : 4;
uint32_t tcpi_rto;
uint32_t tcpi_ato;
uint32_t tcpi_snd_mss;
uint32_t tcpi_rcv_mss;
uint32_t tcpi_unacked;
uint32_t tcpi_sacked;
uint32_t tcpi_lost;
uint32_t tcpi_retrans;
uint32_t tcpi_fackets;
uint32_t tcpi_last_data_sent;
uint32_t tcpi_last_ack_sent;
uint32_t tcpi_last_data_recv;
uint32_t tcpi_last_ack_recv;
uint32_t tcpi_pmtu;
uint32_t tcpi_rcv_ssthresh;
uint32_t tcpi_rtt;
uint32_t tcpi_rttvar;
uint32_t tcpi_snd_ssthresh;
uint32_t tcpi_snd_cwnd;
uint32_t tcpi_advmss;
uint32_t tcpi_reordering;
uint32_t tcpi_rcv_rtt;
uint32_t tcpi_rcv_space;
uint32_t tcpi_total_retrans;
add pacing rate information to the tcp_info struct in tcp.h used by monitoring applications such as ss from iproute2 introduced in linux 3.15 commit 977cb0ecf82eb6d15562573c31edebf90db35163
2014-07-20 14:09:33 +00:00
uint64_t tcpi_pacing_rate;
uint64_t tcpi_max_pacing_rate;
update netinet/tcp.h for linux v4.2 TCP_CC_INFO is a new socket option to get congestion control info without netlink (union tcp_cc_info is in linux/inet_diag.h kernel header). linux commit 6e9250f59ef9efb932c84850cd221f22c2a03c4a TCP_SAVE_SYN, TCP_SAVED_SYN socket options are for saving and getting the SYN headers of passive connections in a server application. linux commit cd8ae85299d54155702a56811b2e035e63064d3d Add new tcpi_* fields to struct tcp_info implementing RFC4898 counters. linux commit 2efd055c53c06b7e89c167c98069bab9afce7e59
2015-09-08 19:50:26 +00:00
uint64_t tcpi_bytes_acked;
uint64_t tcpi_bytes_received;
uint32_t tcpi_segs_out;
uint32_t tcpi_segs_in;
add new tcp_info fields from linux v4.6 new fields and associated linux commit: tcpi_notsent_bytes, tcpi_min_rtt cd9b266095f422267bddbec88f9098b48ea548fc tcpi_data_segs_in, tcpi_data_segs_out a44d6eacdaf56f74fad699af7f4925a5f5ac0e7f
2016-05-26 20:07:09 +00:00
uint32_t tcpi_notsent_bytes;
uint32_t tcpi_min_rtt;
uint32_t tcpi_data_segs_in;
uint32_t tcpi_data_segs_out;
add TCP_INFO and TCP_MD5SIG socket option related structures
2013-12-18 11:53:11 +00:00
};
#define TCP_MD5SIG_MAXKEYLEN 80
make brace placement in public header struct definitions consistent placing the opening brace on the same line as the struct keyword/tag is the style I prefer and seems to be the prevailing practice in more recent additions. these changes were generated by the command: find include/ arch/*/bits -name '*.h' \ -exec sed -i '/^struct [^;{]*$/{N;s/\n/ /;}' {} + and subsequently checked by hand to ensure that the regex did not pick up any false positives.
2016-07-03 18:40:11 +00:00
struct tcp_md5sig {
add TCP_INFO and TCP_MD5SIG socket option related structures
2013-12-18 11:53:11 +00:00
struct sockaddr_storage tcpm_addr;
fix use of legacy u_intN_t types in netinet/tcp.h policy is to avoid using these types except where they are needed for namespace conformance. C99-style stdint.h types should be used instead.
2014-02-05 22:22:26 +00:00
uint16_t __tcpm_pad1;
uint16_t tcpm_keylen;
uint32_t __tcpm_pad2;
uint8_t tcpm_key[TCP_MD5SIG_MAXKEYLEN];
add TCP_INFO and TCP_MD5SIG socket option related structures
2013-12-18 11:53:11 +00:00
};
add TCP_REPAIR_WINDOW to netinet/tcp.h from linux v4.8 another kernel internal state exposure for checkpoint-restore. see linux commit b1ed4c4fa9a5ccf325184fd90edc50978ef6e33a
2016-10-09 17:02:08 +00:00
struct tcp_repair_window {
uint32_t snd_wl1;
uint32_t snd_wnd;
uint32_t max_window;
uint32_t rcv_wnd;
uint32_t rcv_wup;
};
support _BSD_SOURCE feature test macro patch by Isaac Dunham. matched closely (maybe not exact) to glibc's idea of what _BSD_SOURCE should make visible.
2012-05-23 01:52:08 +00:00
#endif
initial check-in, version 0.5.0
2011-02-12 05:22:29 +00:00
#endif