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