1/*-
2 * SPDX-License-Identifier: BSD-2-Clause OR GPL-2.0
3 *
4 * Copyright (c) 2014 Intel Corporation.  All rights reserved.
5 *
6 * This software is available to you under a choice of one of two
7 * licenses.  You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
11 *
12 *     Redistribution and use in source and binary forms, with or
13 *     without modification, are permitted provided that the following
14 *     conditions are met:
15 *
16 *      - Redistributions of source code must retain the above
17 *        copyright notice, this list of conditions and the following
18 *        disclaimer.
19 *
20 *      - Redistributions in binary form must reproduce the above
21 *        copyright notice, this list of conditions and the following
22 *        disclaimer in the documentation and/or other materials
23 *        provided with the distribution.
24 *
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 * SOFTWARE.
33 *
34 * $FreeBSD: stable/11/sys/ofed/drivers/infiniband/core/opa_smi.h 331772 2018-03-30 18:17:33Z hselasky $
35 */
36
37#ifndef __OPA_SMI_H_
38#define __OPA_SMI_H_
39
40#include <rdma/ib_smi.h>
41#include <rdma/opa_smi.h>
42
43#include "smi.h"
44
45enum smi_action opa_smi_handle_dr_smp_recv(struct opa_smp *smp, bool is_switch,
46				       int port_num, int phys_port_cnt);
47int opa_smi_get_fwd_port(struct opa_smp *smp);
48extern enum smi_forward_action opa_smi_check_forward_dr_smp(struct opa_smp *smp);
49extern enum smi_action opa_smi_handle_dr_smp_send(struct opa_smp *smp,
50					      bool is_switch, int port_num);
51
52/*
53 * Return IB_SMI_HANDLE if the SMP should be handled by the local SMA/SM
54 * via process_mad
55 */
56static inline enum smi_action opa_smi_check_local_smp(struct opa_smp *smp,
57						      struct ib_device *device)
58{
59	/* C14-9:3 -- We're at the end of the DR segment of path */
60	/* C14-9:4 -- Hop Pointer = Hop Count + 1 -> give to SMA/SM */
61	return (device->process_mad &&
62		!opa_get_smp_direction(smp) &&
63		(smp->hop_ptr == smp->hop_cnt + 1)) ?
64		IB_SMI_HANDLE : IB_SMI_DISCARD;
65}
66
67/*
68 * Return IB_SMI_HANDLE if the SMP should be handled by the local SMA/SM
69 * via process_mad
70 */
71static inline enum smi_action opa_smi_check_local_returning_smp(struct opa_smp *smp,
72								struct ib_device *device)
73{
74	/* C14-13:3 -- We're at the end of the DR segment of path */
75	/* C14-13:4 -- Hop Pointer == 0 -> give to SM */
76	return (device->process_mad &&
77		opa_get_smp_direction(smp) &&
78		!smp->hop_ptr) ? IB_SMI_HANDLE : IB_SMI_DISCARD;
79}
80
81#endif	/* __OPA_SMI_H_ */
82