1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * RDMA Transport Layer
4 *
5 * Copyright (c) 2014 - 2018 ProfitBricks GmbH. All rights reserved.
6 * Copyright (c) 2018 - 2019 1&1 IONOS Cloud GmbH. All rights reserved.
7 * Copyright (c) 2019 - 2020 1&1 IONOS SE. All rights reserved.
8 */
9#undef pr_fmt
10#define pr_fmt(fmt) KBUILD_MODNAME " L" __stringify(__LINE__) ": " fmt
11
12#include "rtrs-srv.h"
13
14int rtrs_srv_reset_rdma_stats(struct rtrs_srv_stats *stats, bool enable)
15{
16	if (enable) {
17		int cpu;
18		struct rtrs_srv_stats_rdma_stats *r;
19
20		for_each_possible_cpu(cpu) {
21			r = per_cpu_ptr(stats->rdma_stats, cpu);
22			memset(r, 0, sizeof(*r));
23		}
24
25		return 0;
26	}
27
28	return -EINVAL;
29}
30
31ssize_t rtrs_srv_stats_rdma_to_str(struct rtrs_srv_stats *stats, char *page)
32{
33	int cpu;
34	struct rtrs_srv_stats_rdma_stats sum;
35	struct rtrs_srv_stats_rdma_stats *r;
36
37	memset(&sum, 0, sizeof(sum));
38
39	for_each_possible_cpu(cpu) {
40		r = per_cpu_ptr(stats->rdma_stats, cpu);
41
42		sum.dir[READ].cnt	  += r->dir[READ].cnt;
43		sum.dir[READ].size_total  += r->dir[READ].size_total;
44		sum.dir[WRITE].cnt	  += r->dir[WRITE].cnt;
45		sum.dir[WRITE].size_total += r->dir[WRITE].size_total;
46	}
47
48	return sysfs_emit(page, "%llu %llu %llu %llu\n",
49			  sum.dir[READ].cnt, sum.dir[READ].size_total,
50			  sum.dir[WRITE].cnt, sum.dir[WRITE].size_total);
51}
52