1/*
2 * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
3 */
4
5/*
6 * This file contains code imported from the OFED rds source file ib_stats.c
7 * Oracle elects to have and use the contents of ib_stats.c under and governed
8 * by the OpenIB.org BSD license (see below for full license text). However,
9 * the following notice accompanied the original version of this file:
10 */
11
12/*
13 * Copyright (c) 2006 Oracle.  All rights reserved.
14 *
15 * This software is available to you under a choice of one of two
16 * licenses.  You may choose to be licensed under the terms of the GNU
17 * General Public License (GPL) Version 2, available from the file
18 * COPYING in the main directory of this source tree, or the
19 * OpenIB.org BSD license below:
20 *
21 *     Redistribution and use in source and binary forms, with or
22 *     without modification, are permitted provided that the following
23 *     conditions are met:
24 *
25 *      - Redistributions of source code must retain the above
26 *        copyright notice, this list of conditions and the following
27 *        disclaimer.
28 *
29 *      - Redistributions in binary form must reproduce the above
30 *        copyright notice, this list of conditions and the following
31 *        disclaimer in the documentation and/or other materials
32 *        provided with the distribution.
33 *
34 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
35 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
36 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
37 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
38 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
39 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
40 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
41 * SOFTWARE.
42 *
43 */
44#include <sys/rds.h>
45
46#include <sys/ib/clients/rdsv3/rdsv3.h>
47#include <sys/ib/clients/rdsv3/ib.h>
48#include <sys/ib/clients/rdsv3/rdsv3_debug.h>
49
50struct rdsv3_ib_statistics	*rdsv3_ib_stats = NULL;
51
52static char *rdsv3_ib_stat_names[] = {
53	"ib_connect_raced",
54	"ib_listen_closed_stale",
55	"ib_evt_handler_call",
56	"ib_tasklet_call",
57	"ib_tx_cq_event",
58	"ib_tx_ring_full",
59	"ib_tx_throttle",
60	"ib_tx_sg_mapping_failure",
61	"ib_tx_stalled",
62	"ib_tx_credit_updates",
63	"ib_rx_cq_event",
64	"ib_rx_ring_empty",
65	"ib_rx_refill_from_cq",
66	"ib_rx_refill_from_thread",
67	"ib_rx_alloc_limit",
68	"ib_rx_credit_updates",
69	"ib_ack_sent",
70	"ib_ack_send_failure",
71	"ib_ack_send_delayed",
72	"ib_ack_send_piggybacked",
73	"ib_ack_received",
74	"ib_rdma_mr_alloc",
75	"ib_rdma_mr_free",
76	"ib_rdma_mr_used",
77	"ib_rdma_mr_pool_flush",
78	"ib_rdma_mr_pool_wait",
79	"ib_rdma_mr_pool_depleted",
80};
81
82unsigned int
83rdsv3_ib_stats_info_copy(struct rdsv3_info_iterator *iter,
84    unsigned int avail)
85{
86	struct rdsv3_ib_statistics stats = {0, };
87	uint64_t *src;
88	uint64_t *sum;
89	size_t i;
90	int cpu;
91
92	RDSV3_DPRINTF4("rdsv3_ib_stats_info_copy", "iter: %p, avail: %d",
93	    iter, avail);
94
95	if (avail < ARRAY_SIZE(rdsv3_ib_stat_names))
96		goto out;
97
98	for (cpu = 0; cpu < nr_cpus; cpu++) {
99		src = (uint64_t *)&(rdsv3_per_cpu(rdsv3_ib_stats, cpu));
100		sum = (uint64_t *)&stats;
101		for (i = 0; i < sizeof (stats) / sizeof (uint64_t); i++)
102			*(sum++) += *(src++);
103	}
104
105	rdsv3_stats_info_copy(iter, (uint64_t *)&stats, rdsv3_ib_stat_names,
106	    ARRAY_SIZE(rdsv3_ib_stat_names));
107
108	RDSV3_DPRINTF4("rdsv3_ib_stats_info_copy",
109	    "Return: iter: %p, avail: %d", iter, avail);
110out:
111	return (ARRAY_SIZE(rdsv3_ib_stat_names));
112}
113