| 0,0 → 1,155 |
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| /* |
| * Copyright (c) 2009 Lukas Mejdrech |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - 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. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| /** @addtogroup tcp |
| * @{ |
| */ |
| |
| /** @file |
| * TCP header definition. |
| * Names according to the linux src/include/linux/tcp.h header file. |
| */ |
| |
| #ifndef __NET_TCP_HEADER_H__ |
| #define __NET_TCP_HEADER_H__ |
| |
| #include <sys/types.h> |
| |
| /** Type definition of the transmission datagram header. |
| * @see tcp_header |
| */ |
| typedef struct tcp_header tcp_header_t; |
| |
| /** Type definition of the transmission datagram header pointer. |
| * @see tcp_header |
| */ |
| typedef tcp_header_t * tcp_header_ref; |
| |
| /** Transmission datagram header. |
| */ |
| struct tcp_header{ |
| /** The 16-bit source port number, used by the receiver to reply. |
| */ |
| uint16_t source; |
| /** The 16-bit destination port number. |
| */ |
| uint16_t dest; |
| /** The sequence number of the first data byte in this segment. |
| * If the SYN control bit is set, the sequence number is the initial sequence number (n) and the first data byte is n+1. |
| */ |
| uint32_t seq; |
| /** If the ACK control bit is set, this field contains the value of the next sequence number that the receiver is expecting to receive. |
| */ |
| uint32_t ack_seq; |
| #ifdef ARCH_IS_BIG_ENDIAN |
| /** The number of 32-bit words in the TCP header. |
| * It indicates where the data begins. |
| */ |
| uint8_t doff:4; |
| /** Four bits reserved for future use. |
| * Must be zero. |
| */ |
| uint8_t res1:4; |
| #else |
| /** Four bits reserved for future use. |
| * Must be zero. |
| */ |
| uint8_t res1:4; |
| /** The number of 32-bit words in the TCP header. |
| * It indicates where the data begins. |
| */ |
| uint8_t doff:4; |
| #endif |
| #ifdef ARCH_IS_BIG_ENDIAN |
| /** Two bits reserved for future use. |
| * Must be zero. |
| */ |
| uint8_t res2:2; |
| /** Indicates that the urgent pointer field is significant in this segment. |
| */ |
| uint8_t urg:1; |
| /** Indicates that the acknowledgment field is significant in this segment. |
| */ |
| uint8_t ack:1; |
| /** Push function. |
| */ |
| uint8_t psh:1; |
| /** Resets the connection. |
| */ |
| uint8_t rst:1; |
| /** Synchronizes the sequence numbers. |
| */ |
| uint8_t syn:1; |
| /** No more data from sender. |
| */ |
| uint8_t fin:1; |
| #else |
| /** No more data from sender. |
| */ |
| uint8_t fin:1; |
| /** Synchronizes the sequence numbers. |
| */ |
| uint8_t syn:1; |
| /** Resets the connection. |
| */ |
| uint8_t rst:1; |
| /** Push function. |
| */ |
| uint8_t psh:1; |
| /** Indicates that the acknowledgment field is significant in this segment. |
| */ |
| uint8_t ack:1; |
| /** Indicates that the urgent pointer field is significant in this segment. |
| */ |
| uint8_t urg:1; |
| /** Two bits reserved for future use. |
| * Must be zero. |
| */ |
| uint8_t res2:2; |
| #endif |
| /** Used in ACK segments. |
| * It specifies the number of data bytes, beginning with the one indicated in the acknowledgment number field that the receiver (the sender of this segment) is willing to accept. |
| */ |
| uint16_t window; |
| /** The 16-bit one's complement of the one's complement sum of all 16-bit words in a pseudo-header, the TCP header, and the TCP data. |
| * While computing the checksum, the checksum field itself is considered zero. |
| * The pseudo header conceptually prefixed to the TCP header contains the source address, the destination address, the protocol, and the TCP length. |
| * This information gives protection against misrouted datagrams. |
| * If the computed checksum is zero, it is transmitted as all ones (the equivalent in one's complement arithmetic). |
| */ |
| uint16_t check; |
| /** Points to the first data octet following the urgent data. |
| * Only significant when the URG control bit is set. |
| */ |
| uint16_t urg_ptr; |
| } __attribute__ ((packed)); |
| |
| #endif |
| |
| /** @} |
| */ |
| Property changes: |
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| Added: svn:eol-style |
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| +native |
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| \ No newline at end of property |
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