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. |
6 | * Copyright (c) 2004-2007 Voltaire Corporation. All rights reserved. |
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 | * |
36 | */ |
37 | |
38 | #ifndef __SMI_H_ |
39 | #define __SMI_H_ |
40 | |
41 | #include <rdma/ib_smi.h> |
42 | |
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 */ |
51 | IB_SMI_FORWARD /* SMP should be forwarded (for switches only) */ |
52 | }; |
53 | |
54 | enum smi_action smi_handle_dr_smp_recv(struct ib_smp *smp, bool is_switch, |
55 | u32 port_num, int phys_port_cnt); |
56 | int smi_get_fwd_port(struct ib_smp *smp); |
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 | bool is_switch, u32 port_num); |
60 | |
61 | /* |
62 | * Return IB_SMI_HANDLE if the SMP should be handled by the local SMA/SM |
63 | * via process_mad |
64 | */ |
65 | static inline enum smi_action smi_check_local_smp(struct ib_smp *smp, |
66 | struct ib_device *device) |
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 */ |
70 | return ((device->ops.process_mad && |
71 | !ib_get_smp_direction(smp) && |
72 | (smp->hop_ptr == smp->hop_cnt + 1)) ? |
73 | IB_SMI_HANDLE : IB_SMI_DISCARD); |
74 | } |
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->ops.process_mad && |
86 | ib_get_smp_direction(smp) && |
87 | !smp->hop_ptr) ? IB_SMI_HANDLE : IB_SMI_DISCARD); |
88 | } |
89 | |
90 | #endif /* __SMI_H_ */ |
91 | |