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1 | /* |
2 | * Copyright (c) 2013, Mellanox Technologies inc. 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 | #include <linux/mlx5/cmd.h> | |
34 | #include <rdma/ib_mad.h> | |
35 | #include <rdma/ib_smi.h> | |
36 | #include "mlx5_ib.h" | |
37 | ||
38 | enum { | |
39 | MLX5_IB_VENDOR_CLASS1 = 0x9, | |
40 | MLX5_IB_VENDOR_CLASS2 = 0xa | |
41 | }; | |
42 | ||
43 | int mlx5_MAD_IFC(struct mlx5_ib_dev *dev, int ignore_mkey, int ignore_bkey, | |
f241e749 | 44 | u8 port, struct ib_wc *in_wc, struct ib_grh *in_grh, |
e126ba97 EC |
45 | void *in_mad, void *response_mad) |
46 | { | |
47 | u8 op_modifier = 0; | |
48 | ||
49 | /* Key check traps can't be generated unless we have in_wc to | |
50 | * tell us where to send the trap. | |
51 | */ | |
52 | if (ignore_mkey || !in_wc) | |
53 | op_modifier |= 0x1; | |
54 | if (ignore_bkey || !in_wc) | |
55 | op_modifier |= 0x2; | |
56 | ||
9603b61d | 57 | return mlx5_core_mad_ifc(dev->mdev, in_mad, response_mad, op_modifier, port); |
e126ba97 EC |
58 | } |
59 | ||
60 | int mlx5_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num, | |
61 | struct ib_wc *in_wc, struct ib_grh *in_grh, | |
62 | struct ib_mad *in_mad, struct ib_mad *out_mad) | |
63 | { | |
64 | u16 slid; | |
65 | int err; | |
66 | ||
67 | slid = in_wc ? in_wc->slid : be16_to_cpu(IB_LID_PERMISSIVE); | |
68 | ||
69 | if (in_mad->mad_hdr.method == IB_MGMT_METHOD_TRAP && slid == 0) | |
70 | return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; | |
71 | ||
72 | if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED || | |
73 | in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) { | |
74 | if (in_mad->mad_hdr.method != IB_MGMT_METHOD_GET && | |
75 | in_mad->mad_hdr.method != IB_MGMT_METHOD_SET && | |
76 | in_mad->mad_hdr.method != IB_MGMT_METHOD_TRAP_REPRESS) | |
77 | return IB_MAD_RESULT_SUCCESS; | |
78 | ||
79 | /* Don't process SMInfo queries -- the SMA can't handle them. | |
80 | */ | |
81 | if (in_mad->mad_hdr.attr_id == IB_SMP_ATTR_SM_INFO) | |
82 | return IB_MAD_RESULT_SUCCESS; | |
83 | } else if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_PERF_MGMT || | |
84 | in_mad->mad_hdr.mgmt_class == MLX5_IB_VENDOR_CLASS1 || | |
85 | in_mad->mad_hdr.mgmt_class == MLX5_IB_VENDOR_CLASS2 || | |
86 | in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_CONG_MGMT) { | |
87 | if (in_mad->mad_hdr.method != IB_MGMT_METHOD_GET && | |
88 | in_mad->mad_hdr.method != IB_MGMT_METHOD_SET) | |
89 | return IB_MAD_RESULT_SUCCESS; | |
90 | } else { | |
91 | return IB_MAD_RESULT_SUCCESS; | |
92 | } | |
93 | ||
94 | err = mlx5_MAD_IFC(to_mdev(ibdev), | |
95 | mad_flags & IB_MAD_IGNORE_MKEY, | |
96 | mad_flags & IB_MAD_IGNORE_BKEY, | |
97 | port_num, in_wc, in_grh, in_mad, out_mad); | |
98 | if (err) | |
99 | return IB_MAD_RESULT_FAILURE; | |
100 | ||
101 | /* set return bit in status of directed route responses */ | |
102 | if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) | |
103 | out_mad->mad_hdr.status |= cpu_to_be16(1 << 15); | |
104 | ||
105 | if (in_mad->mad_hdr.method == IB_MGMT_METHOD_TRAP_REPRESS) | |
106 | /* no response for trap repress */ | |
107 | return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; | |
108 | ||
109 | return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY; | |
110 | } | |
111 | ||
112 | int mlx5_query_ext_port_caps(struct mlx5_ib_dev *dev, u8 port) | |
113 | { | |
114 | struct ib_smp *in_mad = NULL; | |
115 | struct ib_smp *out_mad = NULL; | |
116 | int err = -ENOMEM; | |
117 | u16 packet_error; | |
118 | ||
119 | in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL); | |
120 | out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL); | |
121 | if (!in_mad || !out_mad) | |
122 | goto out; | |
123 | ||
124 | init_query_mad(in_mad); | |
125 | in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO; | |
126 | in_mad->attr_mod = cpu_to_be32(port); | |
127 | ||
128 | err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad); | |
129 | ||
130 | packet_error = be16_to_cpu(out_mad->status); | |
131 | ||
c7a08ac7 | 132 | dev->mdev->caps.gen.ext_port_cap[port - 1] = (!err && !packet_error) ? |
e126ba97 EC |
133 | MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO : 0; |
134 | ||
135 | out: | |
136 | kfree(in_mad); | |
137 | kfree(out_mad); | |
138 | return err; | |
139 | } |