[net-next-2.6.git] / drivers / infiniband / core / smi.h

/*
 * Copyright (c) 2004 Mellanox Technologies Ltd.  All rights reserved.
 * Copyright (c) 2004 Infinicon Corporation.  All rights reserved.
 * Copyright (c) 2004 Intel Corporation.  All rights reserved.
 * Copyright (c) 2004 Topspin Corporation.  All rights reserved.
 * Copyright (c) 2004-2007 Voltaire Corporation.  All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     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 SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 */

#ifndef __SMI_H_
#define __SMI_H_

#include <rdma/ib_smi.h>

enum smi_action {
	IB_SMI_DISCARD,
	IB_SMI_HANDLE
};

enum smi_forward_action {
	IB_SMI_LOCAL,	/* SMP should be completed up the stack */
	IB_SMI_SEND,	/* received DR SMP should be forwarded to the send queue */
	IB_SMI_FORWARD	/* SMP should be forwarded (for switches only) */
};

enum smi_action smi_handle_dr_smp_recv(struct ib_smp *smp, u8 node_type,
				       int port_num, int phys_port_cnt);
int smi_get_fwd_port(struct ib_smp *smp);
extern enum smi_forward_action smi_check_forward_dr_smp(struct ib_smp *smp);
extern enum smi_action smi_handle_dr_smp_send(struct ib_smp *smp,
					      u8 node_type, int port_num);

/*
 * Return IB_SMI_HANDLE if the SMP should be handled by the local SMA/SM
 * via process_mad
 */
static inline enum smi_action smi_check_local_smp(struct ib_smp *smp,
						  struct ib_device *device)
{
	/* C14-9:3 -- We're at the end of the DR segment of path */
	/* C14-9:4 -- Hop Pointer = Hop Count + 1 -> give to SMA/SM */
	return ((device->process_mad &&
		!ib_get_smp_direction(smp) &&
		(smp->hop_ptr == smp->hop_cnt + 1)) ?
		IB_SMI_HANDLE : IB_SMI_DISCARD);
}

/*
 * Return IB_SMI_HANDLE if the SMP should be handled by the local SMA/SM
 * via process_mad
 */
static inline enum smi_action smi_check_local_returning_smp(struct ib_smp *smp,
						   struct ib_device *device)
{
	/* C14-13:3 -- We're at the end of the DR segment of path */
	/* C14-13:4 -- Hop Pointer == 0 -> give to SM */
	return ((device->process_mad &&
		ib_get_smp_direction(smp) &&
		!smp->hop_ptr) ? IB_SMI_HANDLE : IB_SMI_DISCARD);
}

#endif	/* __SMI_H_ */
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Copyright (c) 2004 Mellanox Technologies Ltd. All rights reserved.
	3	* Copyright (c) 2004 Infinicon Corporation. All rights reserved.
	4	* Copyright (c) 2004 Intel Corporation. All rights reserved.
	5	* Copyright (c) 2004 Topspin Corporation. All rights reserved.
de493d47	6	* Copyright (c) 2004-2007 Voltaire Corporation. All rights reserved.
1da177e4 LT	7	*
	8	* This software is available to you under a choice of one of two
	9	* licenses. You may choose to be licensed under the terms of the GNU
	10	* General Public License (GPL) Version 2, available from the file
	11	* COPYING in the main directory of this source tree, or the
	12	* OpenIB.org BSD license below:
	13	*
	14	* Redistribution and use in source and binary forms, with or
	15	* without modification, are permitted provided that the following
	16	* conditions are met:
	17	*
	18	* - Redistributions of source code must retain the above
	19	* copyright notice, this list of conditions and the following
	20	* disclaimer.
	21	*
	22	* - Redistributions in binary form must reproduce the above
	23	* copyright notice, this list of conditions and the following
	24	* disclaimer in the documentation and/or other materials
	25	* provided with the distribution.
	26	*
	27	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	28	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	29	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	30	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	31	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	32	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	33	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	34	* SOFTWARE.
	35	*
1da177e4 LT	36	*/
	37
	38	#ifndef __SMI_H_
	39	#define __SMI_H_
	40
34816ad9 SH	41	#include <rdma/ib_smi.h>
34816ad9 SH	42
de493d47 HR	43	enum smi_action {
	44	IB_SMI_DISCARD,
	45	IB_SMI_HANDLE
	46	};
	47
	48	enum smi_forward_action {
	49	IB_SMI_LOCAL, /* SMP should be completed up the stack */
	50	IB_SMI_SEND, /* received DR SMP should be forwarded to the send queue */
1bae4dbf	51	IB_SMI_FORWARD /* SMP should be forwarded (for switches only) */
de493d47 HR	52	};
	53
	54	enum smi_action smi_handle_dr_smp_recv(struct ib_smp *smp, u8 node_type,
	55	int port_num, int phys_port_cnt);
1bae4dbf	56	int smi_get_fwd_port(struct ib_smp *smp);
de493d47 HR	57	extern enum smi_forward_action smi_check_forward_dr_smp(struct ib_smp *smp);
	58	extern enum smi_action smi_handle_dr_smp_send(struct ib_smp *smp,
	59	u8 node_type, int port_num);
1da177e4 LT	60
1da177e4 LT	61	/*
727792da SW	62	* Return IB_SMI_HANDLE if the SMP should be handled by the local SMA/SM
727792da SW	63	* via process_mad
1da177e4	64	*/
de493d47 HR	65	static inline enum smi_action smi_check_local_smp(struct ib_smp *smp,
de493d47 HR	66	struct ib_device *device)
1da177e4 LT	67	{
	68	/* C14-9:3 -- We're at the end of the DR segment of path */
	69	/* C14-9:4 -- Hop Pointer = Hop Count + 1 -> give to SMA/SM */
5e9f71a1	70	return ((device->process_mad &&
1da177e4	71	!ib_get_smp_direction(smp) &&
de493d47 HR	72	(smp->hop_ptr == smp->hop_cnt + 1)) ?
de493d47 HR	73	IB_SMI_HANDLE : IB_SMI_DISCARD);
1da177e4	74	}
727792da SW	75
	76	/*
	77	* Return IB_SMI_HANDLE if the SMP should be handled by the local SMA/SM
	78	* via process_mad
	79	*/
	80	static inline enum smi_action smi_check_local_returning_smp(struct ib_smp *smp,
	81	struct ib_device *device)
	82	{
	83	/* C14-13:3 -- We're at the end of the DR segment of path */
	84	/* C14-13:4 -- Hop Pointer == 0 -> give to SM */
	85	return ((device->process_mad &&
	86	ib_get_smp_direction(smp) &&
	87	!smp->hop_ptr) ? IB_SMI_HANDLE : IB_SMI_DISCARD);
	88	}
	89
1da177e4	90	#endif /* __SMI_H_ */