WebSVN – HelenOS – Diff – /branches/network/uspace/srv/net/tl/tcp/tcp_header.h


/*
 * 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.
 *  Based on the RFC~793.
 */
 
#ifndef __NET_TCP_HEADER_H__
#define __NET_TCP_HEADER_H__
 
#include <sys/types.h>
 
/** Returns the actual TCP header length in bytes.
 *  @param[in] header The TCP packet header.
 */
#define TCP_HEADER_LENGTH( header )     (( header )->header_length * 4u )
 
/** Returns the TCP header length.
 *  @param[in] length The TCP header length in bytes.
 */
#define TCP_COMPUTE_HEADER_LENGTH( length )     (( uint8_t ) (( length ) / 4u ))
 
/** 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;
 
/** Type definition of the transmission datagram header option.
 *  @see tcp_option
 */
typedef struct tcp_option   tcp_option_t;
 
/** Type definition of the transmission datagram header option pointer.
 *  @see tcp_option
 */
typedef tcp_option_t *      tcp_option_ref;
 
/** Type definition of the Maximum segment size TCP option.
 *  @see ...
 */
typedef struct tcp_max_segment_size_option  tcp_max_segment_size_option_t;
 
/** Type definition of the Maximum segment size TCP option pointer.
 *  @see tcp_max_segment_size_option
 */
typedef tcp_max_segment_size_option_t *     tcp_max_segment_size_option_ref;
 
/** Transmission datagram header.
 */
struct tcp_header{
    /** The source port number.
     */
    uint16_t    source_port;
    /** The destination port number.
     */
    uint16_t    destination_port;
    /** The sequence number of the first data octet in this segment (except when SYN is present).
     *  If SYN is present the sequence number is the initial sequence number (ISN) and the first data octet is ISN+1.
     */
    uint32_t    sequence_number;
    /** If the ACK control bit is set this field contains the value of the next sequence number the sender of the segment is expecting to receive.
     *  Once a~connection is established this is always sent.
     *  @see acknowledge
     */
    uint32_t    acknowledgement_number;
#ifdef ARCH_IS_BIG_ENDIAN
    /** The number of 32~bit words in the TCP Header.
     *  This indicates where the data begins.
     *  The TCP header (even one including options) is an integral number of 32~bits long.
     */
    uint8_t header_length:4;
    /** Four bits reserved for future use.
     *  Must be zero.
     */
    uint8_t reserved1:4;
#else
    /** Four bits reserved for future use.
     *  Must be zero.
     */
    uint8_t reserved1:4;
    /** The number of 32~bit words in the TCP Header.
     *  This indicates where the data begins.
     *  The TCP header (even one including options) is an integral number of 32~bits long.
     */
    uint8_t header_length:4;
#endif
#ifdef ARCH_IS_BIG_ENDIAN
    /** Two bits reserved for future use.
     *  Must be zero.
     */
    uint8_t reserved2:2;
    /** Urgent Pointer field significant.
     *  @see tcp_header:urgent_pointer
     */
    uint8_t urgent:1;
    /** Acknowledgment field significant
     *  @see tcp_header:acknowledgement_number
     */
    uint8_t acknowledge:1;
    /** Push function.
     */
    uint8_t push:1;
    /** Reset the connection.
     */
    uint8_t reset:1;
    /** Synchronize the sequence numbers.
     */
    uint8_t synchronize:1;
    /** No more data from the sender.
     */
    uint8_t finalize:1;
#else
    /** No more data from the sender.
     */
    uint8_t finalize:1;
    /** Synchronize the sequence numbers.
     */
    uint8_t synchronize:1;
    /** Reset the connection.
     */
    uint8_t reset:1;
    /** Push function.
     */
    uint8_t push:1;
    /** Acknowledgment field significant.
     *  @see tcp_header:acknowledgement_number
     */
    uint8_t acknowledge:1;
    /** Urgent Pointer field significant.
     *  @see tcp_header:urgent_pointer
     */
    uint8_t urgent:1;
    /** Two bits reserved for future use.
     *  Must be zero.
     */
    uint8_t reserved2:2;
#endif
    /** The number of data octets beginning with the one indicated in the acknowledgment field which the sender of this segment is willing to accept.
     *  @see tcp_header:acknowledge
     */
    uint16_t    window;
    /** The checksum field is the 16~bit one's complement of the one's complement sum of all 16~bit words in the header and text.
     *  If a~segment contains an odd number of header and text octets to be checksummed, the last octet is padded on the right with zeros to form a~16~bit word for checksum purposes.
     *  The pad is not transmitted as part of the segment.
     *  While computing the checksum, the checksum field itself is replaced with zeros.
     *  The checksum also coves a~pseudo header conceptually.
     *  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    checksum;
    /** This field communicates the current value of the urgent pointer as a~positive offset from the sequence number in this segment.
     *  The urgent pointer points to the sequence number of the octet following the urgent data.
     *  This field is only be interpreted in segments with the URG control bit set.
     *  @see tcp_header:urgent
     */
    uint16_t    urgent_pointer;
} __attribute__ ((packed));
 
/** Transmission datagram header option.
 */
struct tcp_option{
    /** Option type.
     */
    uint8_t     type;
    /** Option length.
     */
    uint8_t     length;
};
 
/** Maximum segment size TCP option.
 */
struct tcp_max_segment_size_option{
    /** TCP option.
     *  @see TCPOPT_MAX_SEGMENT_SIZE
     *  @see TCPOPT_MAX_SEGMENT_SIZE_LENGTH
     */
    tcp_option_t    option;
    /** Maximum segment size in bytes.
     */
    uint16_t        max_segment_size;
} __attribute__ ((packed));
 
#endif
 
/** @}
 */
 

Rev 4743	Rev 4756
1	/*	1	/*
2	* Copyright (c) 2009 Lukas Mejdrech	2	* Copyright (c) 2009 Lukas Mejdrech
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	13	* documentation and/or other materials provided with the distribution.
14	* - The name of the author may not be used to endorse or promote products	14	* - The name of the author may not be used to endorse or promote products
15	* derived from this software without specific prior written permission.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	/** @addtogroup tcp	29	/** @addtogroup tcp
30	* @{	30	* @{
31	*/	31	*/
32		32
33	/** @file	33	/** @file
34	* TCP header definition.	34	* TCP header definition.
35	* Based on the RFC~793.	35	* Based on the RFC~793.
36	*/	36	*/
37		37
38	#ifndef __NET_TCP_HEADER_H__	38	#ifndef __NET_TCP_HEADER_H__
39	#define __NET_TCP_HEADER_H__	39	#define __NET_TCP_HEADER_H__
40		40
41	#include <sys/types.h>	41	#include <sys/types.h>
42		42
43	/** Returns the actual TCP header length.	43	/** Returns the actual TCP header length in bytes.
44	* @param header The TCP packet header. Input parameter.	44	* @param[in] header The TCP packet header.
45	*/	45	*/
46	#define TCP_HEADER_LENGTH( header ) (( header )->header_length * 4u )	46	#define TCP_HEADER_LENGTH( header ) (( header )->header_length * 4u )
47		47
48	/** Returns the actual TCP header length.	48	/** Returns the TCP header length.
49	* @param header The TCP packet header. Input parameter.	49	* @param[in] length The TCP header length in bytes.
50	*/	50	*/
51	#define TCP_COMPUTE_HEADER_LENGTH( length ) (( uint8_t ) (( length ) / 4u ))	51	#define TCP_COMPUTE_HEADER_LENGTH( length ) (( uint8_t ) (( length ) / 4u ))
52		52
53	/** Type definition of the transmission datagram header.	53	/** Type definition of the transmission datagram header.
54	* @see tcp_header	54	* @see tcp_header
55	*/	55	*/
56	typedef struct tcp_header tcp_header_t;	56	typedef struct tcp_header tcp_header_t;
57		57
58	/** Type definition of the transmission datagram header pointer.	58	/** Type definition of the transmission datagram header pointer.
59	* @see tcp_header	59	* @see tcp_header
60	*/	60	*/
61	typedef tcp_header_t * tcp_header_ref;	61	typedef tcp_header_t * tcp_header_ref;
62		62
63	/** Type definition of the transmission datagram header option.	63	/** Type definition of the transmission datagram header option.
64	* @see tcp_option	64	* @see tcp_option
65	*/	65	*/
66	typedef struct tcp_option tcp_option_t;	66	typedef struct tcp_option tcp_option_t;
67		67
68	/** Type definition of the transmission datagram header option pointer.	68	/** Type definition of the transmission datagram header option pointer.
69	* @see tcp_option	69	* @see tcp_option
70	*/	70	*/
71	typedef tcp_option_t * tcp_option_ref;	71	typedef tcp_option_t * tcp_option_ref;
72		72
73	/** Type definition of the Maximum segment size TCP option.	73	/** Type definition of the Maximum segment size TCP option.
74	* @see ...	74	* @see ...
75	*/	75	*/
76	typedef struct tcp_max_segment_size_option tcp_max_segment_size_option_t;	76	typedef struct tcp_max_segment_size_option tcp_max_segment_size_option_t;
77		77
78	/** Type definition of the Maximum segment size TCP option pointer.	78	/** Type definition of the Maximum segment size TCP option pointer.
79	* @see tcp_max_segment_size_option	79	* @see tcp_max_segment_size_option
80	*/	80	*/
81	typedef tcp_max_segment_size_option_t * tcp_max_segment_size_option_ref;	81	typedef tcp_max_segment_size_option_t * tcp_max_segment_size_option_ref;
82		82
83	/** Transmission datagram header.	83	/** Transmission datagram header.
84	*/	84	*/
85	struct tcp_header{	85	struct tcp_header{
86	/** The source port number.	86	/** The source port number.
87	*/	87	*/
88	uint16_t source_port;	88	uint16_t source_port;
89	/** The destination port number.	89	/** The destination port number.
90	*/	90	*/
91	uint16_t destination_port;	91	uint16_t destination_port;
92	/** The sequence number of the first data octet in this segment (except when SYN is present).	92	/** The sequence number of the first data octet in this segment (except when SYN is present).
93	* If SYN is present the sequence number is the initial sequence number (ISN) and the first data octet is ISN+1.	93	* If SYN is present the sequence number is the initial sequence number (ISN) and the first data octet is ISN+1.
94	*/	94	*/
95	uint32_t sequence_number;	95	uint32_t sequence_number;
96	/** If the ACK control bit is set this field contains the value of the next sequence number the sender of the segment is expecting to receive.	96	/** If the ACK control bit is set this field contains the value of the next sequence number the sender of the segment is expecting to receive.
97	* Once a~connection is established this is always sent.	97	* Once a~connection is established this is always sent.
98	* @see acknowledge	98	* @see acknowledge
99	*/	99	*/
100	uint32_t acknowledgement_number;	100	uint32_t acknowledgement_number;
101	#ifdef ARCH_IS_BIG_ENDIAN	101	#ifdef ARCH_IS_BIG_ENDIAN
102	/** The number of 32~bit words in the TCP Header.	102	/** The number of 32~bit words in the TCP Header.
103	* This indicates where the data begins.	103	* This indicates where the data begins.
104	* The TCP header (even one including options) is an integral number of 32~bits long.	104	* The TCP header (even one including options) is an integral number of 32~bits long.
105	*/	105	*/
106	uint8_t header_length:4;	106	uint8_t header_length:4;
107	/** Four bits reserved for future use.	107	/** Four bits reserved for future use.
108	* Must be zero.	108	* Must be zero.
109	*/	109	*/
110	uint8_t reserved1:4;	110	uint8_t reserved1:4;
111	#else	111	#else
112	/** Four bits reserved for future use.	112	/** Four bits reserved for future use.
113	* Must be zero.	113	* Must be zero.
114	*/	114	*/
115	uint8_t reserved1:4;	115	uint8_t reserved1:4;
116	/** The number of 32~bit words in the TCP Header.	116	/** The number of 32~bit words in the TCP Header.
117	* This indicates where the data begins.	117	* This indicates where the data begins.
118	* The TCP header (even one including options) is an integral number of 32~bits long.	118	* The TCP header (even one including options) is an integral number of 32~bits long.
119	*/	119	*/
120	uint8_t header_length:4;	120	uint8_t header_length:4;
121	#endif	121	#endif
122	#ifdef ARCH_IS_BIG_ENDIAN	122	#ifdef ARCH_IS_BIG_ENDIAN
123	/** Two bits reserved for future use.	123	/** Two bits reserved for future use.
124	* Must be zero.	124	* Must be zero.
125	*/	125	*/
126	uint8_t reserved2:2;	126	uint8_t reserved2:2;
127	/** Urgent Pointer field significant.	127	/** Urgent Pointer field significant.
128	* @see tcp_header:urgent_pointer	128	* @see tcp_header:urgent_pointer
129	*/	129	*/
130	uint8_t urgent:1;	130	uint8_t urgent:1;
131	/** Acknowledgment field significant	131	/** Acknowledgment field significant
132	* @see tcp_header:acknowledgement_number	132	* @see tcp_header:acknowledgement_number
133	*/	133	*/
134	uint8_t acknowledge:1;	134	uint8_t acknowledge:1;
135	/** Push function.	135	/** Push function.
136	*/	136	*/
137	uint8_t push:1;	137	uint8_t push:1;
138	/** Reset the connection.	138	/** Reset the connection.
139	*/	139	*/
140	uint8_t reset:1;	140	uint8_t reset:1;
141	/** Synchronize the sequence numbers.	141	/** Synchronize the sequence numbers.
142	*/	142	*/
143	uint8_t synchronize:1;	143	uint8_t synchronize:1;
144	/** No more data from the sender.	144	/** No more data from the sender.
145	*/	145	*/
146	uint8_t finalize:1;	146	uint8_t finalize:1;
147	#else	147	#else
148	/** No more data from the sender.	148	/** No more data from the sender.
149	*/	149	*/
150	uint8_t finalize:1;	150	uint8_t finalize:1;
151	/** Synchronize the sequence numbers.	151	/** Synchronize the sequence numbers.
152	*/	152	*/
153	uint8_t synchronize:1;	153	uint8_t synchronize:1;
154	/** Reset the connection.	154	/** Reset the connection.
155	*/	155	*/
156	uint8_t reset:1;	156	uint8_t reset:1;
157	/** Push function.	157	/** Push function.
158	*/	158	*/
159	uint8_t push:1;	159	uint8_t push:1;
160	/** Acknowledgment field significant.	160	/** Acknowledgment field significant.
161	* @see tcp_header:acknowledgement_number	161	* @see tcp_header:acknowledgement_number
162	*/	162	*/
163	uint8_t acknowledge:1;	163	uint8_t acknowledge:1;
164	/** Urgent Pointer field significant.	164	/** Urgent Pointer field significant.
165	* @see tcp_header:urgent_pointer	165	* @see tcp_header:urgent_pointer
166	*/	166	*/
167	uint8_t urgent:1;	167	uint8_t urgent:1;
168	/** Two bits reserved for future use.	168	/** Two bits reserved for future use.
169	* Must be zero.	169	* Must be zero.
170	*/	170	*/
171	uint8_t reserved2:2;	171	uint8_t reserved2:2;
172	#endif	172	#endif
173	/** The number of data octets beginning with the one indicated in the acknowledgment field which the sender of this segment is willing to accept.	173	/** The number of data octets beginning with the one indicated in the acknowledgment field which the sender of this segment is willing to accept.
174	* @see tcp_header:acknowledge	174	* @see tcp_header:acknowledge
175	*/	175	*/
176	uint16_t window;	176	uint16_t window;
177	/** The checksum field is the 16~bit one's complement of the one's complement sum of all 16~bit words in the header and text.	177	/** The checksum field is the 16~bit one's complement of the one's complement sum of all 16~bit words in the header and text.
178	* If a~segment contains an odd number of header and text octets to be checksummed, the last octet is padded on the right with zeros to form a~16~bit word for checksum purposes.	178	* If a~segment contains an odd number of header and text octets to be checksummed, the last octet is padded on the right with zeros to form a~16~bit word for checksum purposes.
179	* The pad is not transmitted as part of the segment.	179	* The pad is not transmitted as part of the segment.
180	* While computing the checksum, the checksum field itself is replaced with zeros.	180	* While computing the checksum, the checksum field itself is replaced with zeros.
181	* The checksum also coves a~pseudo header conceptually.	181	* The checksum also coves a~pseudo header conceptually.
182	* The pseudo header conceptually prefixed to the TCP header contains the source address, the destination address, the protocol, and the TCP length.	182	* The pseudo header conceptually prefixed to the TCP header contains the source address, the destination address, the protocol, and the TCP length.
183	* This information gives protection against misrouted datagrams.	183	* This information gives protection against misrouted datagrams.
184	* If the computed checksum is zero, it is transmitted as all ones (the equivalent in one's complement arithmetic).	184	* If the computed checksum is zero, it is transmitted as all ones (the equivalent in one's complement arithmetic).
185	*/	185	*/
186	uint16_t checksum;	186	uint16_t checksum;
187	/** This field communicates the current value of the urgent pointer as a~positive offset from the sequence number in this segment.	187	/** This field communicates the current value of the urgent pointer as a~positive offset from the sequence number in this segment.
188	* The urgent pointer points to the sequence number of the octet following the urgent data.	188	* The urgent pointer points to the sequence number of the octet following the urgent data.
189	* This field is only be interpreted in segments with the URG control bit set.	189	* This field is only be interpreted in segments with the URG control bit set.
190	* @see tcp_header:urgent	190	* @see tcp_header:urgent
191	*/	191	*/
192	uint16_t urgent_pointer;	192	uint16_t urgent_pointer;
193	} __attribute__ ((packed));	193	} __attribute__ ((packed));
194		194
195	/** Transmission datagram header option.	195	/** Transmission datagram header option.
196	*/	196	*/
197	struct tcp_option{	197	struct tcp_option{
198	/** Option type.	198	/** Option type.
199	*/	199	*/
200	uint8_t type;	200	uint8_t type;
201	/** Option length.	201	/** Option length.
202	*/	202	*/
203	uint8_t length;	203	uint8_t length;
204	};	204	};
205		205
206	/** Maximum segment size TCP option.	206	/** Maximum segment size TCP option.
207	*/	207	*/
208	struct tcp_max_segment_size_option{	208	struct tcp_max_segment_size_option{
209	/** TCP option.	209	/** TCP option.
210	* @see TCPOPT_MAX_SEGMENT_SIZE	210	* @see TCPOPT_MAX_SEGMENT_SIZE
211	* @see TCPOPT_MAX_SEGMENT_SIZE_LENGTH	211	* @see TCPOPT_MAX_SEGMENT_SIZE_LENGTH
212	*/	212	*/
213	tcp_option_t option;	213	tcp_option_t option;
214	/** Maximum segment size in bytes.	214	/** Maximum segment size in bytes.
215	*/	215	*/
216	uint16_t max_segment_size;	216	uint16_t max_segment_size;
217	} __attribute__ ((packed));	217	} __attribute__ ((packed));
218		218
219	#endif	219	#endif
220		220
221	/** @}	221	/** @}
222	*/	222	*/
223		223

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(root)/branches/network/uspace/srv/net/tl/tcp/tcp_header.h – Rev 4743 → 4756