From: Jack Wang <jinpu.wang@xxxxxxxxxxxxxxx>
This introduces set of functions used on server side to account
statistics of RDMA data sent/received.
Signed-off-by: Danil Kipnis <danil.kipnis@xxxxxxxxxxxxxxx>
Signed-off-by: Jack Wang <jinpu.wang@xxxxxxxxxxxxxxx>
---
drivers/infiniband/ulp/rtrs/rtrs-srv-stats.c | 91 ++++++++++++++++++++
1 file changed, 91 insertions(+)
create mode 100644 drivers/infiniband/ulp/rtrs/rtrs-srv-stats.c
diff --git a/drivers/infiniband/ulp/rtrs/rtrs-srv-stats.c b/drivers/infiniband/ulp/rtrs/rtrs-srv-stats.c
new file mode 100644
index 000000000000..fe00c55719d6
--- /dev/null
+++ b/drivers/infiniband/ulp/rtrs/rtrs-srv-stats.c
@@ -0,0 +1,91 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * RDMA Transport Layer
+ *
+ * Copyright (c) 2014 - 2018 ProfitBricks GmbH. All rights reserved.
+ *
+ * Copyright (c) 2018 - 2019 1&1 IONOS Cloud GmbH. All rights reserved.
+ *
+ * Copyright (c) 2019 - 2020 1&1 IONOS SE. All rights reserved.
+ */
+#undef pr_fmt
+#define pr_fmt(fmt) KBUILD_MODNAME " L" __stringify(__LINE__) ": " fmt
+
+#include "rtrs-srv.h"
+
+void rtrs_srv_update_rdma_stats(struct rtrs_srv_stats *s,
+ size_t size, int d)
+{
+ atomic64_inc(&s->rdma_stats.dir[d].cnt);
+ atomic64_add(size, &s->rdma_stats.dir[d].size_total);
+}
+
+void rtrs_srv_update_wc_stats(struct rtrs_srv_stats *s)
+{
+ atomic64_inc(&s->wc_comp.calls);
+ atomic64_inc(&s->wc_comp.total_wc_cnt);
+}
+
+int rtrs_srv_reset_rdma_stats(struct rtrs_srv_stats *stats, bool enable)
+{
+ if (enable) {
+ struct rtrs_srv_stats_rdma_stats *r = &stats->rdma_stats;
+
+ memset(r, 0, sizeof(*r));
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+ssize_t rtrs_srv_stats_rdma_to_str(struct rtrs_srv_stats *stats,
+ char *page, size_t len)
+{
+ struct rtrs_srv_stats_rdma_stats *r = &stats->rdma_stats;
+ struct rtrs_srv_sess *sess;
+
+ sess = container_of(stats, typeof(*sess), stats);
+
+ return scnprintf(page, len, "%lld %lld %lld %lld %u\n",
+ (s64)atomic64_read(&r->dir[READ].cnt),
+ (s64)atomic64_read(&r->dir[READ].size_total),
+ (s64)atomic64_read(&r->dir[WRITE].cnt),
+ (s64)atomic64_read(&r->dir[WRITE].size_total),
+ atomic_read(&sess->ids_inflight));
+}
+
+int rtrs_srv_reset_wc_completion_stats(struct rtrs_srv_stats *stats,
+ bool enable)
+{
+ if (enable) {
+ memset(&stats->wc_comp, 0, sizeof(stats->wc_comp));
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+int rtrs_srv_stats_wc_completion_to_str(struct rtrs_srv_stats *stats,
+ char *buf, size_t len)
+{
+ return snprintf(buf, len, "%lld %lld\n",
+ (s64)atomic64_read(&stats->wc_comp.total_wc_cnt),
+ (s64)atomic64_read(&stats->wc_comp.calls));
+}
+
+ssize_t rtrs_srv_reset_all_help(struct rtrs_srv_stats *stats,
+ char *page, size_t len)
+{
+ return scnprintf(page, PAGE_SIZE, "echo 1 to reset all statistics\n");
+}
+
+int rtrs_srv_reset_all_stats(struct rtrs_srv_stats *stats, bool enable)
+{
+ if (enable) {
+ rtrs_srv_reset_wc_completion_stats(stats, enable);
+ rtrs_srv_reset_rdma_stats(stats, enable);
+ return 0;
+ }
+
+ return -EINVAL;
+}
--
2.17.1
