LXR linux/drivers/infiniband/sw/rxe/rxe_hw

   1/*
   2 * Copyright (c) 2017 Mellanox Technologies Ltd. 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 "rxe.h"
  34#include "rxe_hw_counters.h"
  35
  36static const char * const rxe_counter_name[] = {
  37        [RXE_CNT_SENT_PKTS]           =  "sent_pkts",
  38        [RXE_CNT_RCVD_PKTS]           =  "rcvd_pkts",
  39        [RXE_CNT_DUP_REQ]             =  "duplicate_request",
  40        [RXE_CNT_OUT_OF_SEQ_REQ]      =  "out_of_seq_request",
  41        [RXE_CNT_RCV_RNR]             =  "rcvd_rnr_err",
  42        [RXE_CNT_SND_RNR]             =  "send_rnr_err",
  43        [RXE_CNT_RCV_SEQ_ERR]         =  "rcvd_seq_err",
  44        [RXE_CNT_COMPLETER_SCHED]     =  "ack_deferred",
  45        [RXE_CNT_RETRY_EXCEEDED]      =  "retry_exceeded_err",
  46        [RXE_CNT_RNR_RETRY_EXCEEDED]  =  "retry_rnr_exceeded_err",
  47        [RXE_CNT_COMP_RETRY]          =  "completer_retry_err",
  48        [RXE_CNT_SEND_ERR]            =  "send_err",
  49        [RXE_CNT_LINK_DOWNED]         =  "link_downed",
  50        [RXE_CNT_RDMA_SEND]           =  "rdma_sends",
  51        [RXE_CNT_RDMA_RECV]           =  "rdma_recvs",
  52};
  53
  54int rxe_ib_get_hw_stats(struct ib_device *ibdev,
  55                        struct rdma_hw_stats *stats,
  56                        u8 port, int index)
  57{
  58        struct rxe_dev *dev = to_rdev(ibdev);
  59        unsigned int cnt;
  60
  61        if (!port || !stats)
  62                return -EINVAL;
  63
  64        for (cnt = 0; cnt  < ARRAY_SIZE(rxe_counter_name); cnt++)
  65                stats->value[cnt] = atomic64_read(&dev->stats_counters[cnt]);
  66
  67        return ARRAY_SIZE(rxe_counter_name);
  68}
  69
  70struct rdma_hw_stats *rxe_ib_alloc_hw_stats(struct ib_device *ibdev,
  71                                            u8 port_num)
  72{
  73        BUILD_BUG_ON(ARRAY_SIZE(rxe_counter_name) != RXE_NUM_OF_COUNTERS);
  74        /* We support only per port stats */
  75        if (!port_num)
  76                return NULL;
  77
  78        return rdma_alloc_hw_stats_struct(rxe_counter_name,
  79                                          ARRAY_SIZE(rxe_counter_name),
  80                                          RDMA_HW_STATS_DEFAULT_LIFESPAN);
  81}
  82