[dpdk-dev] [PATCH 5/5] librte_ethdev: add to use apistats

[Hideyuki Yamashita <yamashita.hideyuki@ntt-tx.co.jp>]

This patch modifies to use apistats by librte_ethdev.

Signed-off-by: Hideyuki Yamashita <yamashtia.hideyuki@ntt-tx.co.jp>
---
 lib/librte_ethdev/meson.build    |  6 ++-
 lib/librte_ethdev/rte_apistats.c | 64 ++++++++++++++++++++++++++++++++
 lib/librte_ethdev/rte_apistats.h | 64 ++++++++++++++++++++++++++++++++
 lib/librte_ethdev/rte_ethdev.h   |  7 ++++
 lib/librte_ethdev/version.map    |  5 +++
 5 files changed, 144 insertions(+), 2 deletions(-)
 create mode 100644 lib/librte_ethdev/rte_apistats.c
 create mode 100644 lib/librte_ethdev/rte_apistats.h

diff --git a/lib/librte_ethdev/meson.build b/lib/librte_ethdev/meson.build
index e4b6102..d03e784 100644
--- a/lib/librte_ethdev/meson.build
+++ b/lib/librte_ethdev/meson.build
@@ -8,7 +8,8 @@ sources = files('ethdev_private.c',
 	'rte_ethdev.c',
 	'rte_flow.c',
 	'rte_mtr.c',
-	'rte_tm.c')
+	'rte_tm.c' ,
+        'rte_apistats.c')
 
 headers = files('rte_ethdev.h',
 	'rte_ethdev_driver.h',
@@ -24,6 +25,7 @@ headers = files('rte_ethdev.h',
 	'rte_mtr.h',
 	'rte_mtr_driver.h',
 	'rte_tm.h',
-	'rte_tm_driver.h')
+	'rte_tm_driver.h',
+        'rte_apistats.h')
 
 deps += ['net', 'kvargs', 'meter', 'telemetry']
diff --git a/lib/librte_ethdev/rte_apistats.c b/lib/librte_ethdev/rte_apistats.c
new file mode 100644
index 0000000..c4bde34
--- /dev/null
+++ b/lib/librte_ethdev/rte_apistats.c
@@ -0,0 +1,64 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2019 NTT TechnoCross Corporation
+ */
+
+
+#include <unistd.h>
+#include <sys/types.h>
+#include <string.h>
+#include <rte_log.h>
+#include <rte_memzone.h>
+#include <rte_lcore.h>
+
+#include "rte_apistats.h"
+
+/* Macros for printing using RTE_LOG */
+#define RTE_LOGTYPE_APISTATS RTE_LOGTYPE_USER1
+
+#define MZ_APISTATS "rte_apistats"
+
+struct rte_apistats *rte_apicounts;
+
+int rte_apistats_init(void)
+{
+	int i;
+	const struct rte_memzone *mz = NULL;
+	const unsigned int flags = 0;
+
+	/** Allocate stats in shared memory fo multi process support */
+	if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
+		mz = rte_memzone_lookup(MZ_APISTATS);
+		if (mz == NULL) {
+			RTE_LOG(ERR, APISTATS, "Cannot get info structure\n");
+			return -1;
+		}
+		rte_apicounts = mz->addr;
+	} else {
+		/* RTE_PROC_PRIMARY */
+		mz = rte_memzone_reserve(MZ_APISTATS, sizeof(*rte_apicounts),
+			rte_socket_id(), flags);
+		if (mz == NULL) {
+			RTE_LOG(ERR, APISTATS, "Cannot reserve memory zone\n");
+			return -ENOMEM;
+		}
+		rte_apicounts = mz->addr;
+		memset(rte_apicounts, 0, sizeof(*rte_apicounts));
+	}
+
+	/* set up array for data */
+	RTE_LCORE_FOREACH(i) {
+		rte_apicounts->lcoreid_list[i] = 1;
+		RTE_LOG(INFO, APISTATS, "Enable core usage for lcore %u\n", i);
+	}
+	return 0;
+}
+
+int rte_apistats_uninit(void)
+{
+	const struct rte_memzone *mz = NULL;
+	/* free up the memzone */
+	mz = rte_memzone_lookup(MZ_APISTATS);
+	if (mz)
+		rte_memzone_free(mz);
+	return 0;
+}
diff --git a/lib/librte_ethdev/rte_apistats.h b/lib/librte_ethdev/rte_apistats.h
new file mode 100644
index 0000000..afea50e
--- /dev/null
+++ b/lib/librte_ethdev/rte_apistats.h
@@ -0,0 +1,64 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2019 NTT TechnoCross Corporation
+ */
+
+#ifndef _RTE_APISTATS_H_
+#define _RTE_APISTATS_H_
+
+/**
+ * @file
+ * RTE apistats
+ *
+ * library to provide rte_rx_burst/tx_burst api stats.
+ */
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <rte_compat.h>
+#include <rte_lcore.h>
+
+/**
+ * A structure for rte_rx_burst/tx_burst api statistics.
+ */
+struct rte_apistats {
+	int lcoreid_list[RTE_MAX_LCORE];        /**< In use lcoreid list */
+	/**< Total rte_rx_burst call counts */
+	uint64_t rx_burst_counts[RTE_MAX_LCORE];
+
+	/**< Total rte_tx_burst call counts */
+	uint64_t tx_burst_counts[RTE_MAX_LCORE];
+};
+
+extern struct rte_apistats *rte_apicounts;
+
+/**
+ *  Initialize rte_rx_burst/tx_burst call count area.
+ *  @b EXPERIMENTAL: this API may change without prior notice.
+ *
+ *  @return
+ *   -1     : On error
+ *   -ENOMEM: On error
+ *    0     : On success
+ */
+__rte_experimental
+int rte_apistats_init(void);
+
+/**
+ *  Clean up and free memory.
+ *  @b EXPERIMENTAL: this API may change without prior notice.
+ *
+ *  @return
+ *   -1: On error
+ *    0: On success
+ */
+__rte_experimental
+int rte_apistats_uninit(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _RTE_APISTATS_H_ */
diff --git a/lib/librte_ethdev/rte_ethdev.h b/lib/librte_ethdev/rte_ethdev.h
index f5f8919..bef9bc6 100644
--- a/lib/librte_ethdev/rte_ethdev.h
+++ b/lib/librte_ethdev/rte_ethdev.h
@@ -160,6 +160,7 @@ extern "C" {
 
 #include "rte_ethdev_trace_fp.h"
 #include "rte_dev_info.h"
+#include <rte_apistats.h>
 
 extern int rte_eth_dev_logtype;
 
@@ -4849,6 +4850,9 @@ rte_eth_rx_burst(uint16_t port_id, uint16_t queue_id,
 	nb_rx = (*dev->rx_pkt_burst)(dev->data->rx_queues[queue_id],
 				     rx_pkts, nb_pkts);
 
+	int lcore_id = rte_lcore_id();
+	rte_apicounts->rx_burst_counts[lcore_id]++;
+
 #ifdef RTE_ETHDEV_RXTX_CALLBACKS
 	struct rte_eth_rxtx_callback *cb;
 
@@ -5124,6 +5128,9 @@ rte_eth_tx_burst(uint16_t port_id, uint16_t queue_id,
 	}
 #endif
 
+	int lcore_id = rte_lcore_id();
+	rte_apicounts->tx_burst_counts[lcore_id]++;
+
 #ifdef RTE_ETHDEV_RXTX_CALLBACKS
 	struct rte_eth_rxtx_callback *cb;
 
diff --git a/lib/librte_ethdev/version.map b/lib/librte_ethdev/version.map
index d3f5410..adea432 100644
--- a/lib/librte_ethdev/version.map
+++ b/lib/librte_ethdev/version.map
@@ -240,6 +240,11 @@ EXPERIMENTAL {
 	rte_flow_get_restore_info;
 	rte_flow_tunnel_action_decap_release;
 	rte_flow_tunnel_item_release;
+
+        # added in 21.02
+        rte_apistats_init;
+        rte_apistats_uninit;
+        rte_apicounts;
 };
 
 INTERNAL {
-- 
2.18.0