[dpdk-dev] [PATCH v4 03/10] examples/l2fwd-event: add infra to split eventdev framework

[<pbhagavatula@marvell.com>]

From: Pavan Nikhilesh <pbhagavatula@marvell.com>

Add infra to split eventdev framework based on event Tx adapter
capability.
If event Tx adapter has internal port capability then we use
`rte_event_eth_tx_adapter_enqueue` to transmitting packets else
we use a SINGLE_LINK event queue to enqueue packets to a service
core which is responsible for transmitting packets.

Signed-off-by: Sunil Kumar Kori <skori@marvell.com>
Signed-off-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
---
 examples/l2fwd-event/Makefile                 |  2 ++
 examples/l2fwd-event/l2fwd_eventdev.c         | 29 +++++++++++++++++++
 examples/l2fwd-event/l2fwd_eventdev.h         | 20 +++++++++++++
 examples/l2fwd-event/l2fwd_eventdev_generic.c | 24 +++++++++++++++
 .../l2fwd_eventdev_internal_port.c            | 24 +++++++++++++++
 examples/l2fwd-event/meson.build              |  4 ++-
 6 files changed, 102 insertions(+), 1 deletion(-)
 create mode 100644 examples/l2fwd-event/l2fwd_eventdev_generic.c
 create mode 100644 examples/l2fwd-event/l2fwd_eventdev_internal_port.c

diff --git a/examples/l2fwd-event/Makefile b/examples/l2fwd-event/Makefile
index bfe0058a2..c1f700a65 100644
--- a/examples/l2fwd-event/Makefile
+++ b/examples/l2fwd-event/Makefile
@@ -8,6 +8,8 @@ APP = l2fwd-event
 # all source are stored in SRCS-y
 SRCS-y := main.c
 SRCS-y += l2fwd_eventdev.c
+SRCS-y += l2fwd_eventdev_internal_port.c
+SRCS-y += l2fwd_eventdev_generic.c
 
 # Build using pkg-config variables if possible
 ifeq ($(shell pkg-config --exists libdpdk && echo 0),0)
diff --git a/examples/l2fwd-event/l2fwd_eventdev.c b/examples/l2fwd-event/l2fwd_eventdev.c
index 19efb6d1e..df76f1c1f 100644
--- a/examples/l2fwd-event/l2fwd_eventdev.c
+++ b/examples/l2fwd-event/l2fwd_eventdev.c
@@ -76,6 +76,31 @@ parse_eventdev_args(char **argv, int argc)
 	return 0;
 }
 
+static void
+eventdev_capability_setup(void)
+{
+	struct eventdev_resources *eventdev_rsrc = get_eventdev_rsrc();
+	uint32_t caps = 0;
+	uint16_t i;
+	int ret;
+
+	RTE_ETH_FOREACH_DEV(i) {
+		ret = rte_event_eth_tx_adapter_caps_get(0, i, &caps);
+		if (ret)
+			rte_exit(EXIT_FAILURE,
+				 "Invalid capability for Tx adptr port %d\n",
+				 i);
+
+		eventdev_rsrc->tx_mode_q |= !(caps &
+				   RTE_EVENT_ETH_TX_ADAPTER_CAP_INTERNAL_PORT);
+	}
+
+	if (eventdev_rsrc->tx_mode_q)
+		eventdev_set_generic_ops(&eventdev_rsrc->ops);
+	else
+		eventdev_set_internal_port_ops(&eventdev_rsrc->ops);
+}
+
 void
 eventdev_resource_setup(void)
 {
@@ -90,6 +115,10 @@ eventdev_resource_setup(void)
 
 	if (!rte_event_dev_count())
 		rte_exit(EXIT_FAILURE, "No Eventdev found");
+
+	/* Setup eventdev capability callbacks */
+	eventdev_capability_setup();
+
 	/* Start event device service */
 	ret = rte_event_dev_service_id_get(eventdev_rsrc->event_d_id,
 			&service_id);
diff --git a/examples/l2fwd-event/l2fwd_eventdev.h b/examples/l2fwd-event/l2fwd_eventdev.h
index 2e8d95e67..8b6606b4c 100644
--- a/examples/l2fwd-event/l2fwd_eventdev.h
+++ b/examples/l2fwd-event/l2fwd_eventdev.h
@@ -18,8 +18,26 @@ enum {
 	CMD_LINE_OPT_EVENTQ_SYNC_NUM,
 };
 
+typedef void (*event_queue_setup_cb)(uint16_t ethdev_count,
+				     uint32_t event_queue_cfg);
+typedef uint32_t (*eventdev_setup_cb)(uint16_t ethdev_count);
+typedef void (*adapter_setup_cb)(uint16_t ethdev_count);
+typedef void (*event_port_setup_cb)(void);
+typedef void (*service_setup_cb)(void);
+typedef void (*event_loop_cb)(void);
+
+struct eventdev_setup_ops {
+	event_queue_setup_cb event_queue_setup;
+	event_port_setup_cb event_port_setup;
+	eventdev_setup_cb eventdev_setup;
+	adapter_setup_cb adapter_setup;
+	service_setup_cb service_setup;
+	event_loop_cb l2fwd_event_loop;
+};
+
 struct eventdev_resources {
 	struct l2fwd_port_statistics *stats;
+	struct eventdev_setup_ops ops;
 	struct rte_mempool *pkt_pool;
 	uint64_t timer_period;
 	uint32_t *dst_ports;
@@ -58,5 +76,7 @@ get_eventdev_rsrc(void)
 }
 
 void eventdev_resource_setup(void);
+void eventdev_set_generic_ops(struct eventdev_setup_ops *ops);
+void eventdev_set_internal_port_ops(struct eventdev_setup_ops *ops);
 
 #endif /* __L2FWD_EVENTDEV_H__ */
diff --git a/examples/l2fwd-event/l2fwd_eventdev_generic.c b/examples/l2fwd-event/l2fwd_eventdev_generic.c
new file mode 100644
index 000000000..e3990f8b0
--- /dev/null
+++ b/examples/l2fwd-event/l2fwd_eventdev_generic.c
@@ -0,0 +1,24 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(C) 2019 Marvell International Ltd.
+ */
+
+#include <stdbool.h>
+#include <getopt.h>
+
+#include <rte_cycles.h>
+#include <rte_ethdev.h>
+#include <rte_eventdev.h>
+#include <rte_event_eth_rx_adapter.h>
+#include <rte_event_eth_tx_adapter.h>
+#include <rte_lcore.h>
+#include <rte_log.h>
+#include <rte_spinlock.h>
+
+#include "l2fwd_common.h"
+#include "l2fwd_eventdev.h"
+
+void
+eventdev_set_generic_ops(struct eventdev_setup_ops *ops)
+{
+	RTE_SET_USED(ops);
+}
diff --git a/examples/l2fwd-event/l2fwd_eventdev_internal_port.c b/examples/l2fwd-event/l2fwd_eventdev_internal_port.c
new file mode 100644
index 000000000..a0d2111f9
--- /dev/null
+++ b/examples/l2fwd-event/l2fwd_eventdev_internal_port.c
@@ -0,0 +1,24 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(C) 2019 Marvell International Ltd.
+ */
+
+#include <stdbool.h>
+#include <getopt.h>
+
+#include <rte_cycles.h>
+#include <rte_ethdev.h>
+#include <rte_eventdev.h>
+#include <rte_event_eth_rx_adapter.h>
+#include <rte_event_eth_tx_adapter.h>
+#include <rte_lcore.h>
+#include <rte_log.h>
+#include <rte_spinlock.h>
+
+#include "l2fwd_common.h"
+#include "l2fwd_eventdev.h"
+
+void
+eventdev_set_internal_port_ops(struct eventdev_setup_ops *ops)
+{
+	RTE_SET_USED(ops);
+}
diff --git a/examples/l2fwd-event/meson.build b/examples/l2fwd-event/meson.build
index b1ad48cc5..38560840c 100644
--- a/examples/l2fwd-event/meson.build
+++ b/examples/l2fwd-event/meson.build
@@ -9,5 +9,7 @@
 
 sources = files(
 	'main.c',
-	'l2fwd_eventdev.c'
+	'l2fwd_eventdev.c',
+	'l2fwd_eventdev_internal_port.c',
+	'l2fwd_eventdev_generic.c'
 )
-- 
2.17.1