tcp.c File Reference

TCP module implementation. More...

#include <assert.h>
#include <async.h>
#include <fibril_synch.h>
#include <malloc.h>
#include <stdio.h>
#include <ipc/ipc.h>
#include <ipc/services.h>
#include "../../err.h"
#include "../../messages.h"
#include "../../modules.h"
#include "../../structures/dynamic_fifo.h"
#include "../../structures/packet/packet_client.h"
#include "../../include/checksum.h"
#include "../../include/in.h"
#include "../../include/in6.h"
#include "../../include/inet.h"
#include "../../include/ip_client.h"
#include "../../include/ip_interface.h"
#include "../../include/ip_protocols.h"
#include "../../include/icmp_client.h"
#include "../../include/icmp_interface.h"
#include "../../include/net_interface.h"
#include "../../include/socket_codes.h"
#include "../../include/socket_errno.h"
#include "../../include/tcp_codes.h"
#include "../../socket/socket_core.h"
#include "../../socket/socket_messages.h"
#include "../tl_common.h"
#include "../tl_messages.h"
#include "tcp.h"
#include "tcp_header.h"
#include "tcp_module.h"

Include dependency graph for tcp.c:

Data Structures
struct	tcp_timeout
	TCP reply timeout data. More...
Defines
#define	NET_DEFAULT_TCP_WINDOW   10240
	The TCP window default value.
#define	NET_DEFAULT_TCP_INITIAL_TIMEOUT   3000000L
	Initial timeout for new connections.
#define	NET_DEFAULT_TCP_TIME_WAIT_TIMEOUT   2000L
	Default timeout for closing.
#define	TCP_INITIAL_SEQUENCE_NUMBER   2999
	The initial outgoing sequence number.
#define	MAX_TCP_FRAGMENT_SIZE   65535
	Maximum TCP fragment size.
#define	TCP_FREE_PORTS_START   1025
	Free ports pool start.
#define	TCP_FREE_PORTS_END   65535
	Free ports pool end.
#define	TCP_SYN_SENT_TIMEOUT   1000000L
	Timeout for connection initialization, SYN sent.
#define	TCP_MAX_TIMEOUTS   8
	The maximum number of timeouts in a row before singaling connection lost.
#define	TCP_FAST_RETRANSMIT_COUNT   3
	The number of acknowledgements before retransmit.
#define	IS_IN_INTERVAL_OVERFLOW(lower, value, higher_equal)   ((((lower) < (value)) && (((value) <= (higher_equal)) || ((higher_equal) < (lower)))) || (((value) <= (higher_equal)) && ((higher_equal) < (lower))))
	Returns a value indicating whether the value is in the interval respecting the possible overflow.
Typedefs
typedef struct tcp_timeout	tcp_timeout_t
	Type definition of the TCP timeout.
typedef tcp_timeout_t *	tcp_timeout_ref
	Type definition of the TCP timeout pointer.
Functions
int	tcp_release_and_return (packet_t packet, int result)
	Releases the packet and returns the result.
void	tcp_prepare_operation_header (socket_core_ref socket, tcp_socket_data_ref socket_data, tcp_header_ref header, int synchronize, int finalize)
int	tcp_prepare_timeout (int(*timeout_function)(void *tcp_timeout_t), socket_core_ref socket, tcp_socket_data_ref socket_data, size_t sequence_number, tcp_socket_state_t state, suseconds_t timeout, int globals_read_only)
void	tcp_free_socket_data (socket_core_ref socket)
int	tcp_timeout (void *data)
int	tcp_release_after_timeout (void *data)
int	tcp_process_packet (device_id_t device_id, packet_t packet, services_t error)
int	tcp_connect_core (socket_core_ref socket, socket_cores_ref local_sockets, struct sockaddr *addr, socklen_t addrlen)
int	tcp_queue_prepare_packet (socket_core_ref socket, tcp_socket_data_ref socket_data, packet_t packet, size_t data_length)
int	tcp_queue_packet (socket_core_ref socket, tcp_socket_data_ref socket_data, packet_t packet, size_t data_length)
packet_t	tcp_get_packets_to_send (socket_core_ref socket, tcp_socket_data_ref socket_data)
void	tcp_send_packets (device_id_t device_id, packet_t packet)
void	tcp_process_acknowledgement (socket_core_ref socket, tcp_socket_data_ref socket_data, tcp_header_ref header)
packet_t	tcp_send_prepare_packet (socket_core_ref socket, tcp_socket_data_ref socket_data, packet_t packet, size_t data_length, size_t sequence_number)
packet_t	tcp_prepare_copy (socket_core_ref socket, tcp_socket_data_ref socket_data, packet_t packet, size_t data_length, size_t sequence_number)
void	tcp_retransmit_packet (socket_core_ref socket, tcp_socket_data_ref socket_data, size_t sequence_number)
int	tcp_create_notification_packet (packet_t *packet, socket_core_ref socket, tcp_socket_data_ref socket_data, int synchronize, int finalize)
void	tcp_refresh_socket_data (tcp_socket_data_ref socket_data)
void	tcp_initialize_socket_data (tcp_socket_data_ref socket_data)
int	tcp_process_listen (socket_core_ref listening_socket, tcp_socket_data_ref listening_socket_data, tcp_header_ref header, packet_t packet, struct sockaddr *src, struct sockaddr *dest, size_t addrlen)
int	tcp_process_syn_sent (socket_core_ref socket, tcp_socket_data_ref socket_data, tcp_header_ref header, packet_t packet)
int	tcp_process_syn_received (socket_core_ref socket, tcp_socket_data_ref socket_data, tcp_header_ref header, packet_t packet)
int	tcp_process_established (socket_core_ref socket, tcp_socket_data_ref socket_data, tcp_header_ref header, packet_t packet, int fragments, size_t total_length)
int	tcp_queue_received_packet (socket_core_ref socket, tcp_socket_data_ref socket_data, packet_t packet, int fragments, size_t total_length)
int	tcp_received_msg (device_id_t device_id, packet_t packet, services_t receiver, services_t error)
int	tcp_process_client_messages (ipc_callid_t callid, ipc_call_t call)
int	tcp_listen_message (socket_cores_ref local_sockets, int socket_id, int backlog)
int	tcp_connect_message (socket_cores_ref local_sockets, int socket_id, struct sockaddr *addr, socklen_t addrlen)
int	tcp_recvfrom_message (socket_cores_ref local_sockets, int socket_id, int flags, size_t *addrlen)
int	tcp_send_message (socket_cores_ref local_sockets, int socket_id, int fragments, size_t *data_fragment_size, int flags)
int	tcp_accept_message (socket_cores_ref local_sockets, int socket_id, int new_socket_id, size_t *data_fragment_size, size_t *addrlen)
int	tcp_close_message (socket_cores_ref local_sockets, int socket_id)
int	tcp_initialize (async_client_conn_t client_connection)
	Initializes the TCP module.
int	tcp_message (ipc_callid_t callid, ipc_call_t *call, ipc_call_t *answer, int *answer_count)
	Processes the TCP message.
Variables
tcp_globals_t	tcp_globals
	TCP global data.

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Detailed Description

TCP module implementation.

See also:

tcp.h