diff options
Diffstat (limited to 'include/netinet/tcp.h')
| -rw-r--r-- | include/netinet/tcp.h | 157 |
1 files changed, 108 insertions, 49 deletions
diff --git a/include/netinet/tcp.h b/include/netinet/tcp.h index 36976369e..87099ec14 100644 --- a/include/netinet/tcp.h +++ b/include/netinet/tcp.h @@ -10,10 +10,6 @@ * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. @@ -37,11 +33,27 @@ #define _NETINET_TCP_H 1 #include <features.h> -#include <sys/types.h> -__BEGIN_DECLS +/* + * User-settable options (used with setsockopt). + */ +#define TCP_NODELAY 1 /* Don't delay send to coalesce packets */ +#define TCP_MAXSEG 2 /* Set maximum segment size */ +#define TCP_CORK 3 /* Control sending of partial frames */ +#define TCP_KEEPIDLE 4 /* Start keeplives after this period */ +#define TCP_KEEPINTVL 5 /* Interval between keepalives */ +#define TCP_KEEPCNT 6 /* Number of keepalives before death */ +#define TCP_SYNCNT 7 /* Number of SYN retransmits */ +#define TCP_LINGER2 8 /* Life time of orphaned FIN-WAIT-2 state */ +#define TCP_DEFER_ACCEPT 9 /* Wake up listener only when data arrive */ +#define TCP_WINDOW_CLAMP 10 /* Bound advertised window */ +#define TCP_INFO 11 /* Information about this connection. */ +#define TCP_QUICKACK 12 /* Bock/reenable quick ACKs. */ -#ifdef __FAVOR_BSD +#ifdef __USE_MISC +# include <sys/types.h> + +# ifdef __FAVOR_BSD typedef u_int32_t tcp_seq; /* * TCP header. @@ -53,34 +65,34 @@ struct tcphdr u_int16_t th_dport; /* destination port */ tcp_seq th_seq; /* sequence number */ tcp_seq th_ack; /* acknowledgement number */ -#if __BYTE_ORDER == __LITTLE_ENDIAN +# if __BYTE_ORDER == __LITTLE_ENDIAN u_int8_t th_x2:4; /* (unused) */ u_int8_t th_off:4; /* data offset */ -#endif -#if __BYTE_ORDER == __BIG_ENDIAN +# endif +# if __BYTE_ORDER == __BIG_ENDIAN u_int8_t th_off:4; /* data offset */ u_int8_t th_x2:4; /* (unused) */ -#endif +# endif u_int8_t th_flags; -#define TH_FIN 0x01 -#define TH_SYN 0x02 -#define TH_RST 0x04 -#define TH_PUSH 0x08 -#define TH_ACK 0x10 -#define TH_URG 0x20 +# define TH_FIN 0x01 +# define TH_SYN 0x02 +# define TH_RST 0x04 +# define TH_PUSH 0x08 +# define TH_ACK 0x10 +# define TH_URG 0x20 u_int16_t th_win; /* window */ u_int16_t th_sum; /* checksum */ u_int16_t th_urp; /* urgent pointer */ }; -#else /* !__FAVOR_BSD */ +# else /* !__FAVOR_BSD */ struct tcphdr { u_int16_t source; u_int16_t dest; u_int32_t seq; u_int32_t ack_seq; -#if __BYTE_ORDER == __LITTLE_ENDIAN +# if __BYTE_ORDER == __LITTLE_ENDIAN u_int16_t res1:4; u_int16_t doff:4; u_int16_t fin:1; @@ -90,7 +102,7 @@ struct tcphdr u_int16_t ack:1; u_int16_t urg:1; u_int16_t res2:2; -#elif __BYTE_ORDER == __BIG_ENDIAN +# elif __BYTE_ORDER == __BIG_ENDIAN u_int16_t doff:4; u_int16_t res1:4; u_int16_t res2:2; @@ -100,14 +112,14 @@ struct tcphdr u_int16_t rst:1; u_int16_t syn:1; u_int16_t fin:1; -#else -#error "Adjust your <bits/endian.h> defines" -#endif +# else +# error "Adjust your <bits/endian.h> defines" +# endif u_int16_t window; u_int16_t check; u_int16_t urg_ptr; }; -#endif /* __FAVOR_BSD */ +# endif /* __FAVOR_BSD */ enum { @@ -124,20 +136,20 @@ enum TCP_CLOSING /* now a valid state */ }; -#define TCPOPT_EOL 0 -#define TCPOPT_NOP 1 -#define TCPOPT_MAXSEG 2 -#define TCPOLEN_MAXSEG 4 -#define TCPOPT_WINDOW 3 -#define TCPOLEN_WINDOW 3 -#define TCPOPT_SACK_PERMITTED 4 /* Experimental */ -#define TCPOLEN_SACK_PERMITTED 2 -#define TCPOPT_SACK 5 /* Experimental */ -#define TCPOPT_TIMESTAMP 8 -#define TCPOLEN_TIMESTAMP 10 -#define TCPOLEN_TSTAMP_APPA (TCPOLEN_TIMESTAMP+2) /* appendix A */ - -#define TCPOPT_TSTAMP_HDR \ +# define TCPOPT_EOL 0 +# define TCPOPT_NOP 1 +# define TCPOPT_MAXSEG 2 +# define TCPOLEN_MAXSEG 4 +# define TCPOPT_WINDOW 3 +# define TCPOLEN_WINDOW 3 +# define TCPOPT_SACK_PERMITTED 4 /* Experimental */ +# define TCPOLEN_SACK_PERMITTED 2 +# define TCPOPT_SACK 5 /* Experimental */ +# define TCPOPT_TIMESTAMP 8 +# define TCPOLEN_TIMESTAMP 10 +# define TCPOLEN_TSTAMP_APPA (TCPOLEN_TIMESTAMP+2) /* appendix A */ + +# define TCPOPT_TSTAMP_HDR \ (TCPOPT_NOP<<24|TCPOPT_NOP<<16|TCPOPT_TIMESTAMP<<8|TCPOLEN_TIMESTAMP) /* @@ -146,21 +158,68 @@ enum * but 512 is probably more convenient. * This should be defined as MIN(512, IP_MSS - sizeof (struct tcpiphdr)). */ -#define TCP_MSS 512 +# define TCP_MSS 512 -#define TCP_MAXWIN 65535 /* largest value for (unscaled) window */ +# define TCP_MAXWIN 65535 /* largest value for (unscaled) window */ -#define TCP_MAX_WINSHIFT 14 /* maximum window shift */ +# define TCP_MAX_WINSHIFT 14 /* maximum window shift */ -/* - * User-settable options (used with setsockopt). - */ -#define TCP_NODELAY 0x01 /* don't delay send to coalesce packets */ -#define TCP_MAXSEG 0x02 /* set maximum segment size */ -#define TCP_CORK 0x03 /* control sending of partial frames */ +# define SOL_TCP 6 /* TCP level */ + + +# define TCPI_OPT_TIMESTAMPS 1 +# define TCPI_OPT_SACK 2 +# define TCPI_OPT_WSCALE 4 +# define TCPI_OPT_ECN 8 -#define SOL_TCP 6 /* TCP level */ +/* Values for tcpi_state. */ +enum tcp_ca_state +{ + TCP_CA_Open = 0, + TCP_CA_Disorder = 1, + TCP_CA_CWR = 2, + TCP_CA_Recovery = 3, + TCP_CA_Loss = 4 +}; + +struct tcp_info +{ + u_int8_t tcpi_state; + u_int8_t tcpi_ca_state; + u_int8_t tcpi_retransmits; + u_int8_t tcpi_probes; + u_int8_t tcpi_backoff; + u_int8_t tcpi_options; + u_int8_t tcpi_snd_wscale : 4, tcpi_rcv_wscale : 4; + + u_int32_t tcpi_rto; + u_int32_t tcpi_ato; + u_int32_t tcpi_snd_mss; + u_int32_t tcpi_rcv_mss; + + u_int32_t tcpi_unacked; + u_int32_t tcpi_sacked; + u_int32_t tcpi_lost; + u_int32_t tcpi_retrans; + u_int32_t tcpi_fackets; + + /* Times. */ + u_int32_t tcpi_last_data_sent; + u_int32_t tcpi_last_ack_sent; /* Not remembered, sorry. */ + u_int32_t tcpi_last_data_recv; + u_int32_t tcpi_last_ack_recv; + + /* Metrics. */ + u_int32_t tcpi_pmtu; + u_int32_t tcpi_rcv_ssthresh; + u_int32_t tcpi_rtt; + u_int32_t tcpi_rttvar; + u_int32_t tcpi_snd_ssthresh; + u_int32_t tcpi_snd_cwnd; + u_int32_t tcpi_advmss; + u_int32_t tcpi_reordering; +}; -__END_DECLS +#endif /* Misc. */ #endif /* netinet/tcp.h */ |