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This enum is also used to set the tcp flags within a tcp header. With the current values in this enum, wireshark is not able to recognize the tcp segments as their actual tcp type, and thus odd messages in wireshark appear. destiny: reusing tcp flags for combinations
109 lines
3.3 KiB
C
109 lines
3.3 KiB
C
/**
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* Destiny TCP header
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*
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* Copyright (C) 2013 INRIA.
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*
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* This file is subject to the terms and conditions of the GNU Lesser General
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* Public License. See the file LICENSE in the top level directory for more
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* details.
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*
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* @ingroup destiny
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* @{
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* @file
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* @brief TCP data structs and prototypes
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* @author Oliver Gesch <oliver.gesch@googlemail.com>
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*/
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#ifndef TCP_H_
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#define TCP_H_
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#include "ipv6.h"
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#include "destiny/types.h"
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#define TCP_EOO_OPTION (0x00) /* End of option list */
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#define TCP_NOP_OPTION (0x01) /* No operation */
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#define TCP_MSS_OPTION (0x02) /* Maximum segment size */
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#define TCP_WSF_OPTION (0x03) /* Window scale factor */
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#define TCP_TS_OPTION (0x08) /* Timestamp */
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enum tcp_flags {
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TCP_FIN = (1 << 0),
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TCP_SYN = (1 << 1),
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TCP_RST = (1 << 2),
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TCP_PSH = (1 << 3),
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TCP_ACK = (1 << 4),
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TCP_URG = (1 << 5),
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TCP_ECE = (1 << 6),
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TCP_CWR = (1 << 7),
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TCP_SYN_ACK = (TCP_SYN | TCP_ACK),
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TCP_URG_PSH = (TCP_URG | TCP_PSH),
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TCP_FIN_ACK = (TCP_FIN | TCP_ACK)
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};
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enum tcp_states {
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TCP_CLOSED = 0,
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TCP_LISTEN = 1,
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TCP_SYN_SENT = 2,
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TCP_SYN_RCVD = 3,
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TCP_ESTABLISHED = 4,
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TCP_FIN_WAIT_1 = 5,
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TCP_FIN_WAIT_2 = 6,
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TCP_CLOSE_WAIT = 7,
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TCP_CLOSING = 8,
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TCP_LAST_ACK = 9,
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TCP_TIME_WAIT = 10,
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TCP_UNKNOWN = 11
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};
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enum tcp_codes {
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UNDEFINED = 0,
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PACKET_OK = 1,
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CLOSE_CONN = 2,
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SEQ_NO_TOO_SMALL = 3,
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ACK_NO_TOO_SMALL = 4,
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ACK_NO_TOO_BIG = 5
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};
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#define REMOVE_RESERVED (0xFC)
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#define IS_TCP_ACK(a) (((a) & TCP_ACK) == TCP_ACK) /* Test for ACK flag only, ignore URG und PSH flag */
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#define IS_TCP_RST(a) (((a) & TCP_RST) == TCP_RST)
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#define IS_TCP_SYN(a) (((a) & TCP_SYN) == TCP_SYN)
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#define IS_TCP_SYN_ACK(a) (((a) & TCP_SYN_ACK) == TCP_SYN_ACK)
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#define IS_TCP_FIN(a) (((a) & TCP_FIN) == TCP_FIN)
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#define IS_TCP_FIN_ACK(a) (((a) & TCP_FIN_ACK) == TCP_FIN_ACK)
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#define SET_TCP_ACK(a) (a) = TCP_ACK
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#define SET_TCP_RST(a) (a) = TCP_RST
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#define SET_TCP_SYN(a) (a) = TCP_SYN
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#define SET_TCP_SYN_ACK(a) (a) = TCP_SYN_ACK
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#define SET_TCP_FIN(a) (a) = TCP_FIN
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#define SET_TCP_FIN_ACK(a) (a) = TCP_FIN_ACK
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#define TCP_STACK_SIZE (KERNEL_CONF_STACKSIZE_DEFAULT)
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typedef struct __attribute__((packed)) tcp_mms_o_t {
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uint8_t kind;
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uint8_t len;
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uint16_t mss;
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} tcp_mss_option_t;
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#ifdef TCP_HC
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extern mutex_t global_context_counter_mutex;
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extern uint8_t global_context_counter;
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#endif
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extern mutex_t global_sequence_counter_mutex;
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extern uint32_t global_sequence_counter;
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void tcp_packet_handler(void);
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uint16_t tcp_csum(ipv6_hdr_t *ipv6_header, tcp_hdr_t *tcp_header);
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void printTCPHeader(tcp_hdr_t *tcp_header);
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void printArrayRange_tcp(uint8_t *udp_header, uint16_t len);
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/**
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* @}
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*/
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#endif /* TCP_H_ */
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