drivers/infiniband/sw/rxe/rxe_hw_counters.c

   1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
   2 /*
   3  * Copyright (c) 2017 Mellanox Technologies Ltd. All rights reserved.
   4  */
   5
   6 #include "rxe.h"
   7 #include "rxe_hw_counters.h"
   8
   9 static const char * const rxe_counter_name[] = {
  10         [RXE_CNT_SENT_PKTS]           =  "sent_pkts",
  11         [RXE_CNT_RCVD_PKTS]           =  "rcvd_pkts",
  12         [RXE_CNT_DUP_REQ]             =  "duplicate_request",
  13         [RXE_CNT_OUT_OF_SEQ_REQ]      =  "out_of_seq_request",
  14         [RXE_CNT_RCV_RNR]             =  "rcvd_rnr_err",
  15         [RXE_CNT_SND_RNR]             =  "send_rnr_err",
  16         [RXE_CNT_RCV_SEQ_ERR]         =  "rcvd_seq_err",
  17         [RXE_CNT_COMPLETER_SCHED]     =  "ack_deferred",
  18         [RXE_CNT_RETRY_EXCEEDED]      =  "retry_exceeded_err",
  19         [RXE_CNT_RNR_RETRY_EXCEEDED]  =  "retry_rnr_exceeded_err",
  20         [RXE_CNT_COMP_RETRY]          =  "completer_retry_err",
  21         [RXE_CNT_SEND_ERR]            =  "send_err",
  22         [RXE_CNT_LINK_DOWNED]         =  "link_downed",
  23         [RXE_CNT_RDMA_SEND]           =  "rdma_sends",
  24         [RXE_CNT_RDMA_RECV]           =  "rdma_recvs",
  25 };
  26
  27 int rxe_ib_get_hw_stats(struct ib_device *ibdev,
  28                         struct rdma_hw_stats *stats,
  29                         u32 port, int index)
  30 {
  31         struct rxe_dev *dev = to_rdev(ibdev);
  32         unsigned int cnt;
  33
  34         if (!port || !stats)
  35                 return -EINVAL;
  36
  37         for (cnt = 0; cnt  < ARRAY_SIZE(rxe_counter_name); cnt++)
  38                 stats->value[cnt] = atomic64_read(&dev->stats_counters[cnt]);
  39
  40         return ARRAY_SIZE(rxe_counter_name);
  41 }
  42
  43 struct rdma_hw_stats *rxe_ib_alloc_hw_stats(struct ib_device *ibdev,
  44                                             u32 port_num)
  45 {
  46         BUILD_BUG_ON(ARRAY_SIZE(rxe_counter_name) != RXE_NUM_OF_COUNTERS);
  47         /* We support only per port stats */
  48         if (!port_num)
  49                 return NULL;
  50
  51         return rdma_alloc_hw_stats_struct(rxe_counter_name,
  52                                           ARRAY_SIZE(rxe_counter_name),
  53                                           RDMA_HW_STATS_DEFAULT_LIFESPAN);
  54 }