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
36 static 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
54 int 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
70 struct 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 }