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 }
82