tcp.h File Reference

#include "tcpproxy.h"

Go to the source code of this file.

Defines
#define	TCP_PROTO   6
#define	IP_VERSION   4
#define	IP_START_TTL   254
#define	TCP_LINK_MSS   1402
#define	TCP_TWO_MSL   60000
#define	TCP_WIN_CLAMP_SIZE   12618
Typedefs
typedef tcp_cid	Ttcp_cid
typedef enum tcp_state	Ttcp_state
typedef tcp_cb	Ttcp_cb
Enumerations
enum	tcp_state {   TCPS_FREE = 0, TCPS_NEW, TCPS_SYN_SENT, TCPS_SYN_RECV,   TCPS_ESTABLISHED, TCPS_FIN_WAIT1, TCPS_FIN_WAIT2, TCPS_TIME_WAIT,   TCPS_CLOSED, TCPS_CLOSE_WAIT, TCPS_LAST_ACK, TCPS_CLOSING,   TCPS_MAX_STATES }
enum	{ TCP_INIT_MH_SEQ = 1, TCP_INIT_MH_ACK = 2, TCP_INIT_FH_SEQ = 4, TCP_INIT_FH_ACK = 8 }
Functions
void	init_tcp ()
void	cleanup_tcp ()
int	seq_cmp (unsigned a, unsigned b)
int	tcp_data_size (Tpacket_data *pd)
void	tcp_timeout (void *ptr)
int	handle_tcp (Tpacket_data *pd)

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Define Documentation

#define IP_START_TTL   254

Definition at line 12 of file tcp.h. Referenced by send_tcp_rst().

#define IP_VERSION   4

Definition at line 11 of file tcp.h. Referenced by send_tcp_rst().

#define TCP_LINK_MSS   1402

Definition at line 13 of file tcp.h.

#define TCP_PROTO   6

Definition at line 10 of file tcp.h. Referenced by send_tcp_rst(), and tcp_chksum().

#define TCP_TWO_MSL   60000

Definition at line 14 of file tcp.h. Referenced by tcps_close_wait(), tcps_closing(), tcps_fin_wait1(), tcps_fin_wait2(), and tcps_new().

#define TCP_WIN_CLAMP_SIZE   12618

Definition at line 15 of file tcp.h.

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Typedef Documentation

typedef struct tcp_cb Ttcp_cb

typedef struct tcp_cid Ttcp_cid

typedef enum tcp_state Ttcp_state

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Enumeration Type Documentation

anonymous enum

Enumeration values: TCP_INIT_MH_SEQ  TCP_INIT_MH_ACK  TCP_INIT_FH_SEQ  TCP_INIT_FH_ACK  Definition at line 44 of file tcp.h.

enum tcp_state

Enumeration values: TCPS_FREE  TCPS_NEW  TCPS_SYN_SENT  TCPS_SYN_RECV  TCPS_ESTABLISHED  TCPS_FIN_WAIT1  TCPS_FIN_WAIT2  TCPS_TIME_WAIT  TCPS_CLOSED  TCPS_CLOSE_WAIT  TCPS_LAST_ACK  TCPS_CLOSING  TCPS_MAX_STATES  Definition at line 27 of file tcp.h.

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Function Documentation

void cleanup_tcp (   )

Definition at line 52 of file tcp.c. Referenced by main().

int handle_tcp (  Tpacket_data *  pd  )

Definition at line 668 of file tcp.c. References alloc_tcp_cb(), allow_conn(), tcp_cb::cid, clamp_tcp_win(), clear_timer(), tcp_cid::daddr, dealloc_packet_data(), dealloc_tcp_cb(), packet_data::dir, tcp_cid::dport, DPRINT, tcp_cb::fh_ack, tcp_cb::fh_seq, tcp_cb::init, packet_data::ip, packet_data::ipq_pm, tcp_cb::mh_ack, mh_ack_rcvd(), tcp_cb::mh_seq, tcp_cb::mut, mutex_lock(), mutex_unlock(), tcp_cb::out_queue, PACKET_DIR_IN, queue_hipri(), queue_tcp(), reset_tcp_queue(), tcp_cid::saddr, send_tcp_rst(), seq_cmp(), tcp_cid::sport, tcp_cb::state, tcp_chksum(), tcp_data_size(), TCP_INIT_FH_ACK, TCP_INIT_FH_SEQ, TCP_INIT_MH_ACK, TCP_INIT_MH_SEQ, TCP_MAX_CONN, tcp_switch, tcp_tab_mut, tcp_timeout(), TCPS_CLOSED, TCPS_FREE, and packet_data::trans. Referenced by handle_packet().

void init_tcp (   )

Definition at line 34 of file tcp.c. References tcp_cb::out_queue, tcp_cb::state, TCP_MAX_CONN, tcp_tab_mut, and TCPS_FREE. Referenced by main().

int seq_cmp (  unsigned  a, unsigned  b )  [inline]

Definition at line 66 of file tcp.c. Referenced by add_tcp_sent(), handle_tcp(), and mh_ack_rcvd().

int tcp_data_size (  Tpacket_data *  pd  )  [inline]

Definition at line 305 of file tcp.c. References packet_data::ip, packet_data::ipq_pm, and packet_data::trans. Referenced by handle_tcp(), and scheduler().

void tcp_timeout (  void *  ptr  )

Definition at line 634 of file tcp.c. References dealloc_tcp_cb(), DPRINT, EPRINT, tcp_cb::mut, mutex_lock(), mutex_unlock(), tcp_cb::state, TCPS_CLOSED, TCPS_LAST_ACK, TCPS_SYN_SENT, and TCPS_TIME_WAIT. Referenced by clear_tcp_timers(), handle_tcp(), tcps_close_wait(), tcps_closing(), tcps_fin_wait1(), tcps_fin_wait2(), tcps_new(), and tcps_syn_sent().

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