usr/src/uts/common/io/ib/clients/rdsv3/ib_stats.c

   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
  50 struct rdsv3_ib_statistics      *rdsv3_ib_stats = NULL;
  51
  52 static 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
  82 unsigned int
  83 rdsv3_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);
 110 out:
 111         return (ARRAY_SIZE(rdsv3_ib_stat_names));
 112 }