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79 lines
1.7 KiB
C
79 lines
1.7 KiB
C
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/*
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* tcp.h
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*
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* Created on: 29.09.2011
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* Author: Oliver
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*/
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#ifndef TCP_H_
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#define TCP_H_
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#define TCP_HDR_LEN 20
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enum tcp_flags_
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{
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TCP_ACK = 0x08,
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TCP_URG_PSH = 0x14,
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TCP_RST = 0x20,
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TCP_SYN = 0x40,
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TCP_SYN_ACK = 0x48,
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TCP_FIN = 0x80,
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TCP_FIN_ACK = 0x88
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};
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enum tcp_states
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{
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CLOSED = 0,
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LISTEN = 1,
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SYN_SENT = 2,
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SYN_RCVD = 3,
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ESTABLISHED = 4,
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FIN_WAIT_1 = 5,
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FIN_WAIT_2 = 6,
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CLOSE_WAIT = 7,
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CLOSING = 8,
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LAST_ACK = 9,
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TIME_WAIT = 10
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};
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#define IS_TCP_ACK(a) ((a & ~TCP_URG_PSH) | TCP_ACK) // Test for ACK flag only, iognore URG und PSH flag
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#define IS_TCP_RST(a) ((a & ~TCP_URG_PSH) | TCP_RST)
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#define IS_TCP_SYN(a) ((a & ~TCP_URG_PSH) | TCP_SYN)
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#define IS_TCP_SYN_ACK(a) ((a & ~TCP_URG_PSH) | TCP_SYN_ACK)
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#define IS_TCP_FIN(a) ((a & ~TCP_URG_PSH) | TCP_FIN)
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#define IS_TCP_FIN_ACK(a) ((a & ~TCP_URG_PSH) | TCP_FIN_ACK)
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// TODO: Probably stack size too high
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#define TCP_STACK_SIZE 2048
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#include "sys/net/sixlowpan/sixlowip.h"
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typedef struct __attribute__ ((packed)) tcp_socket_status_t
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{
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uint32_t seq_nr;
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uint32_t ack_nr;
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uint16_t window;
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uint8_t state;
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} tcp_socket_status_t;
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typedef struct __attribute__ ((packed)) tcp_hdr_t
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{
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uint16_t src_port;
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uint16_t dst_port;
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uint32_t seq_nr;
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uint32_t ack_nr;
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uint8_t dataOffset_reserved;
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uint8_t reserved_flags;
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uint16_t window;
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uint16_t checksum;
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uint16_t urg_pointer;
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} tcp_hdr_t;
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uint8_t buffer_tcp[BUFFER_SIZE];
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char tcp_stack_buffer[TCP_STACK_SIZE];
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void tcp_packet_handler (void);
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#endif /* TCP_H_ */
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