1 /*
2 * Copyright (c) 2004-2009 Voltaire 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
34 #if HAVE_CONFIG_H
35 # include <config.h>
36 #endif /* HAVE_CONFIG_H */
37
38 #include <string.h>
39
40 #include <infiniband/mad.h>
41
42 #undef DEBUG
43 #define DEBUG if (ibdebug) IBWARN
44
response_expected(int method)45 static inline int response_expected(int method)
46 {
47 return method == IB_MAD_METHOD_GET ||
48 method == IB_MAD_METHOD_SET || method == IB_MAD_METHOD_TRAP;
49 }
50
bm_call_via(void * data,ib_portid_t * portid,ib_bm_call_t * call,struct ibmad_port * srcport)51 uint8_t *bm_call_via(void *data, ib_portid_t * portid, ib_bm_call_t * call,
52 struct ibmad_port * srcport)
53 {
54 ib_rpc_t rpc = { 0 };
55 int resp_expected;
56 struct {
57 uint64_t bkey;
58 uint8_t reserved[32];
59 uint8_t data[IB_BM_DATA_SZ];
60 } bm_data;
61
62 DEBUG("route %s data %p", portid2str(portid), data);
63 if (portid->lid <= 0) {
64 IBWARN("only lid routes are supported");
65 return NULL;
66 }
67
68 resp_expected = response_expected(call->method);
69
70 rpc.mgtclass = IB_BOARD_MGMT_CLASS;
71
72 rpc.method = call->method;
73 rpc.attr.id = call->attrid;
74 rpc.attr.mod = call->mod;
75 rpc.timeout = resp_expected ? call->timeout : 0;
76 // send data and bkey
77 rpc.datasz = IB_BM_BKEY_AND_DATA_SZ;
78 rpc.dataoffs = IB_BM_BKEY_OFFS;
79
80 // copy data to a buffer which also includes the bkey
81 bm_data.bkey = htonll(call->bkey);
82 memset(bm_data.reserved, 0, sizeof(bm_data.reserved));
83 memcpy(bm_data.data, data, IB_BM_DATA_SZ);
84
85 DEBUG
86 ("method 0x%x attr 0x%x mod 0x%x datasz %d off %d res_ex %d bkey 0x%08x%08x",
87 rpc.method, rpc.attr.id, rpc.attr.mod, rpc.datasz, rpc.dataoffs,
88 resp_expected, (int)(call->bkey >> 32), (int)call->bkey);
89
90 portid->qp = 1;
91 if (!portid->qkey)
92 portid->qkey = IB_DEFAULT_QP1_QKEY;
93
94 if (resp_expected) {
95 /* FIXME: no RMPP for now */
96 if (mad_rpc(srcport, &rpc, portid, &bm_data, &bm_data))
97 goto return_ok;
98 return NULL;
99 }
100
101 if (mad_send_via(&rpc, portid, 0, &bm_data, srcport) < 0)
102 return NULL;
103
104 return_ok:
105 memcpy(data, bm_data.data, IB_BM_DATA_SZ);
106 return data;
107 }
108