IB/rxe: Add port protocol stats

Expose new counters using the get_hw_stats callback.
We expose the following counters:

+---------------------+----------------------------------------+
|      Name           |           Description                  |
|---------------------+----------------------------------------|
|sent_pkts            | number of sent pkts                    |
|---------------------+----------------------------------------|
|rcvd_pkts            | number of received packets             |
|---------------------+----------------------------------------|
|out_of_sequence      | number of errors due to packet         |
|                     | transport sequence number              |
|---------------------+----------------------------------------|
|duplicate_request    | number of received duplicated packets. |
|                     | A request that previously executed is  |
|                     | named duplicated.                      |
|---------------------+----------------------------------------|
|rcvd_rnr_err         | number of received RNR by completer    |
|---------------------+----------------------------------------|
|send_rnr_err         | number of sent RNR by responder        |
|---------------------+----------------------------------------|
|rcvd_seq_err         | number of out of sequence packets      |
|                     | received                               |
|---------------------+----------------------------------------|
|ack_deffered         | number of deferred handling of ack     |
|                     | packets.                               |
|---------------------+----------------------------------------|
|retry_exceeded_err   | number of times retry exceeded         |
|---------------------+----------------------------------------|
|completer_retry_err  | number of times completer decided to   |
|                     | retry                                  |
|---------------------+----------------------------------------|
|send_err             | number of failed send packet           |
+---------------------+----------------------------------------+

Signed-off-by: Yonatan Cohen <yonatanc@mellanox.com>
Reviewed-by: Moni Shoua <monis@mellanox.com>
Reviewed-by: Andrew Boyer <andrew.boyer@dell.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>

1 files changed, 61 insertions, 0 deletions

diff --git a/drivers/infiniband/sw/rxe/rxe_hw_counters.h b/drivers/infiniband/sw/rxe/rxe_hw_counters.h
new file mode 100644
index 000000000000..f44df1b76742
--- /dev/null
+++ b/drivers/infiniband/sw/rxe/rxe_hw_counters.h
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2017 Mellanox Technologies Ltd. All rights reserved.
+ *
+ * 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
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *	- Redistributions of source code must retain the above
+ *	  copyright notice, this list of conditions and the following
+ *	  disclaimer.
+ *
+ *	- 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.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef RXE_HW_COUNTERS_H
+#define RXE_HW_COUNTERS_H
+
+/*
+ * when adding counters to enum also add
+ * them to rxe_counter_name[] vector.
+ */
+enum rxe_counters {
+	RXE_CNT_SENT_PKTS,
+	RXE_CNT_RCVD_PKTS,
+	RXE_CNT_DUP_REQ,
+	RXE_CNT_OUT_OF_SEQ_REQ,
+	RXE_CNT_RCV_RNR,
+	RXE_CNT_SND_RNR,
+	RXE_CNT_RCV_SEQ_ERR,
+	RXE_CNT_COMPLETER_SCHED,
+	RXE_CNT_RETRY_EXCEEDED,
+	RXE_CNT_RNR_RETRY_EXCEEDED,
+	RXE_CNT_COMP_RETRY,
+	RXE_CNT_SEND_ERR,
+	RXE_NUM_OF_COUNTERS
+};
+
+struct rdma_hw_stats *rxe_ib_alloc_hw_stats(struct ib_device *ibdev,
+					    u8 port_num);
+int rxe_ib_get_hw_stats(struct ib_device *ibdev,
+			struct rdma_hw_stats *stats,
+			u8 port, int index);
+#endif /* RXE_HW_COUNTERS_H */