[apple/xnu.git] / bsd / netinet / mptcp_seq.h

/*
 * Copyright (c) 2012-2017 Apple Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 *
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 *
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 *
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */

#ifndef _NETINET_MPTCP_SEQ_H_
#define	_NETINET_MPTCP_SEQ_H_

/*
 * Use 64-bit modulo arithmetic for comparing
 * Data Sequence Numbers and Data ACKs. Implies
 * 2**63 space is available for sending data.
 */
#define	MPTCP_SEQ_LT(a, b)	((int64_t)((a) - (b)) < 0)
#define	MPTCP_SEQ_LEQ(a, b)	((int64_t)((a) - (b)) <= 0)
#define	MPTCP_SEQ_GT(a, b)	((int64_t)((a) - (b)) > 0)
#define	MPTCP_SEQ_GEQ(a, b)	((int64_t)((a) - (b)) >= 0)

#endif	/* _NETINET_MPTCP_SEQ_H_ */
Commit	Line	Data
1c79356b	1	/*
5ba3f43e	2	* Copyright (c) 2012-2017 Apple Inc. All rights reserved.
1c79356b	3	*
2d21ac55	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
39236c6e	5	*
2d21ac55 A	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. The rights granted to you under the License
	10	* may not be used to create, or enable the creation or redistribution of,
	11	* unlawful or unlicensed copies of an Apple operating system, or to
	12	* circumvent, violate, or enable the circumvention or violation of, any
	13	* terms of an Apple operating system software license agreement.
39236c6e	14	*
2d21ac55 A	15	* Please obtain a copy of the License at
2d21ac55 A	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
39236c6e	17	*
2d21ac55 A	18	* The Original Code and all software distributed under the License are
2d21ac55 A	19	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
8f6c56a5 A	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
8f6c56a5 A	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
2d21ac55 A	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
	24	* limitations under the License.
39236c6e	25	*
2d21ac55	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
1c79356b	27	*/
1c79356b	28
39236c6e A	29	#ifndef _NETINET_MPTCP_SEQ_H_
39236c6e A	30	#define _NETINET_MPTCP_SEQ_H_
1c79356b A	31
1c79356b A	32	/*
39236c6e A	33	* Use 64-bit modulo arithmetic for comparing
	34	* Data Sequence Numbers and Data ACKs. Implies
	35	* 2**63 space is available for sending data.
1c79356b	36	*/
39236c6e A	37	#define MPTCP_SEQ_LT(a, b) ((int64_t)((a) - (b)) < 0)
	38	#define MPTCP_SEQ_LEQ(a, b) ((int64_t)((a) - (b)) <= 0)
	39	#define MPTCP_SEQ_GT(a, b) ((int64_t)((a) - (b)) > 0)
	40	#define MPTCP_SEQ_GEQ(a, b) ((int64_t)((a) - (b)) >= 0)
1c79356b	41
39236c6e	42	#endif /* _NETINET_MPTCP_SEQ_H_ */