RDMA/bnxt_re: Implement the alloc/get_hw_stats callback

Expose HW counters using the get_hw_stats callback

Signed-off-by: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

1 files changed, 114 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/bnxt_re/hw_counters.c b/drivers/infiniband/hw/bnxt_re/hw_counters.c
new file mode 100644
index 000000000000..7b28219eba46
--- /dev/null
+++ b/drivers/infiniband/hw/bnxt_re/hw_counters.c
@@ -0,0 +1,114 @@
+/*
+ * Broadcom NetXtreme-E RoCE driver.
+ *
+ * Copyright (c) 2016 - 2017, Broadcom. All rights reserved.  The term
+ * Broadcom refers to Broadcom Limited and/or its subsidiaries.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Description: Statistics
+ *
+ */
+
+#include <linux/interrupt.h>
+#include <linux/types.h>
+#include <linux/spinlock.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/pci.h>
+#include <linux/prefetch.h>
+#include <linux/delay.h>
+
+#include <rdma/ib_addr.h>
+
+#include "bnxt_ulp.h"
+#include "roce_hsi.h"
+#include "qplib_res.h"
+#include "qplib_sp.h"
+#include "qplib_fp.h"
+#include "qplib_rcfw.h"
+#include "bnxt_re.h"
+#include "hw_counters.h"
+
+static const char * const bnxt_re_stat_name[] = {
+	[BNXT_RE_ACTIVE_QP]           =  "active_qps",
+	[BNXT_RE_ACTIVE_SRQ]          =  "active_srqs",
+	[BNXT_RE_ACTIVE_CQ]           =  "active_cqs",
+	[BNXT_RE_ACTIVE_MR]           =  "active_mrs",
+	[BNXT_RE_ACTIVE_MW]           =  "active_mws",
+	[BNXT_RE_RX_PKTS]             =  "rx_pkts",
+	[BNXT_RE_RX_BYTES]            =  "rx_bytes",
+	[BNXT_RE_TX_PKTS]             =  "tx_pkts",
+	[BNXT_RE_TX_BYTES]            =  "tx_bytes",
+	[BNXT_RE_RECOVERABLE_ERRORS]  =  "recoverable_errors"
+};
+
+int bnxt_re_ib_get_hw_stats(struct ib_device *ibdev,
+			    struct rdma_hw_stats *stats,
+			    u8 port, int index)
+{
+	struct bnxt_re_dev *rdev = to_bnxt_re_dev(ibdev, ibdev);
+	struct ctx_hw_stats *bnxt_re_stats = rdev->qplib_ctx.stats.dma;
+
+	if (!port || !stats)
+		return -EINVAL;
+
+	stats->value[BNXT_RE_ACTIVE_QP] = atomic_read(&rdev->qp_count);
+	stats->value[BNXT_RE_ACTIVE_SRQ] = atomic_read(&rdev->srq_count);
+	stats->value[BNXT_RE_ACTIVE_CQ] = atomic_read(&rdev->cq_count);
+	stats->value[BNXT_RE_ACTIVE_MR] = atomic_read(&rdev->mr_count);
+	stats->value[BNXT_RE_ACTIVE_MW] = atomic_read(&rdev->mw_count);
+	if (bnxt_re_stats) {
+		stats->value[BNXT_RE_RECOVERABLE_ERRORS] =
+			le64_to_cpu(bnxt_re_stats->tx_bcast_pkts);
+		stats->value[BNXT_RE_RX_PKTS] =
+			le64_to_cpu(bnxt_re_stats->rx_ucast_pkts);
+		stats->value[BNXT_RE_RX_BYTES] =
+			le64_to_cpu(bnxt_re_stats->rx_ucast_bytes);
+		stats->value[BNXT_RE_TX_PKTS] =
+			le64_to_cpu(bnxt_re_stats->tx_ucast_pkts);
+		stats->value[BNXT_RE_TX_BYTES] =
+			le64_to_cpu(bnxt_re_stats->tx_ucast_bytes);
+	}
+	return ARRAY_SIZE(bnxt_re_stat_name);
+}
+
+struct rdma_hw_stats *bnxt_re_ib_alloc_hw_stats(struct ib_device *ibdev,
+						u8 port_num)
+{
+	BUILD_BUG_ON(ARRAY_SIZE(bnxt_re_stat_name) != BNXT_RE_NUM_COUNTERS);
+	/* We support only per port stats */
+	if (!port_num)
+		return NULL;
+
+	return rdma_alloc_hw_stats_struct(bnxt_re_stat_name,
+					  ARRAY_SIZE(bnxt_re_stat_name),
+					  RDMA_HW_STATS_DEFAULT_LIFESPAN);
+}