[spp] [PATCH 1/2] spp_nfv: move forward func to be shared

[Yasufumi Ogawa <yasufum.o@gmail.com>]

This update is to move forward() and some data structs used by this
function to shared dir to enable it to be used from other processes
including spp_primary.

Signed-off-by: Yasufumi Ogawa <yasufum.o@gmail.com>
---
 src/nfv/Makefile              |  2 +-
 src/nfv/main.c                | 49 +------------------------------
 src/nfv/params.h              |  4 ---
 src/shared/basic_forwarder.c  | 55 +++++++++++++++++++++++++++++++++++
 src/shared/basic_forwarder.h  | 13 +++++++++
 src/shared/common.h           |  3 ++
 src/shared/secondary/common.h |  2 --
 7 files changed, 73 insertions(+), 55 deletions(-)
 create mode 100644 src/shared/basic_forwarder.c
 create mode 100644 src/shared/basic_forwarder.h

diff --git a/src/nfv/Makefile b/src/nfv/Makefile
index 1328f61..a8b5629 100644
--- a/src/nfv/Makefile
+++ b/src/nfv/Makefile
@@ -14,7 +14,7 @@ APP = spp_nfv
 
 # all source are stored in SRCS-y
 SRCS-y := main.c nfv_status.c
-SRCS-y += ../shared/common.c
+SRCS-y += ../shared/common.c ../shared/basic_forwarder.c
 SRCS-y += ../shared/secondary/common.c
 SRCS-y += ../shared/secondary/utils.c ../shared/secondary/add_port.c
 
diff --git a/src/nfv/main.c b/src/nfv/main.c
index 89e7714..dbefba4 100644
--- a/src/nfv/main.c
+++ b/src/nfv/main.c
@@ -16,6 +16,7 @@
 #include "shared/secondary/add_port.h"
 #include "shared/secondary/common.h"
 #include "shared/common.h"
+#include "shared/basic_forwarder.h"
 
 #include "params.h"
 #include "init.h"
@@ -105,54 +106,6 @@ parse_app_args(int argc, char *argv[])
 	return 0;
 }
 
-static void
-forward(void)
-{
-	uint16_t nb_rx;
-	uint16_t nb_tx;
-	int in_port;
-	int out_port;
-	uint16_t buf;
-	int i;
-
-	/* Go through every possible port numbers*/
-	for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
-		struct rte_mbuf *bufs[MAX_PKT_BURST];
-
-		if (ports_fwd_array[i].in_port_id == PORT_RESET)
-			continue;
-
-		if (ports_fwd_array[i].out_port_id == PORT_RESET)
-			continue;
-
-		/* if status active, i count is in port*/
-		in_port = i;
-		out_port = ports_fwd_array[i].out_port_id;
-
-		/* Get burst of RX packets, from first port of pair. */
-		/*first port rx, second port tx*/
-		nb_rx = ports_fwd_array[in_port].rx_func(in_port, 0, bufs,
-			MAX_PKT_BURST);
-		if (unlikely(nb_rx == 0))
-			continue;
-
-		port_map[in_port].stats->rx += nb_rx;
-
-		/* Send burst of TX packets, to second port of pair. */
-		nb_tx = ports_fwd_array[out_port].tx_func(out_port, 0, bufs,
-			nb_rx);
-
-		port_map[out_port].stats->tx += nb_tx;
-
-		/* Free any unsent packets. */
-		if (unlikely(nb_tx < nb_rx)) {
-			port_map[out_port].stats->tx_drop += nb_rx - nb_tx;
-			for (buf = nb_tx; buf < nb_rx; buf++)
-				rte_pktmbuf_free(bufs[buf]);
-		}
-	}
-}
-
 /* main processing loop */
 static void
 nfv_loop(void)
diff --git a/src/nfv/params.h b/src/nfv/params.h
index 5850791..7197baf 100644
--- a/src/nfv/params.h
+++ b/src/nfv/params.h
@@ -22,13 +22,9 @@ struct porttype_map portmap[] = {
 	{ .port_name = NULL,    .port_type = UNDEF, },
 };
 
-static struct port ports_fwd_array[RTE_MAX_ETHPORTS];
-
 /* the port details */
 struct port_info *ports;
 
 static enum cmd_type cmd;
 
-static struct port_map port_map[RTE_MAX_ETHPORTS];
-
 #endif // _NFV_PARAMS_H_
diff --git a/src/shared/basic_forwarder.c b/src/shared/basic_forwarder.c
new file mode 100644
index 0000000..7aefaaa
--- /dev/null
+++ b/src/shared/basic_forwarder.c
@@ -0,0 +1,55 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2019 Nippon Telegraph and Telephone Corporation
+ */
+
+#include <stdint.h>
+#include "shared/common.h"
+#include "shared/basic_forwarder.h"
+
+void
+forward(void)
+{
+	uint16_t nb_rx;
+	uint16_t nb_tx;
+	int in_port;
+	int out_port;
+	uint16_t buf;
+	int i;
+
+	/* Go through every possible port numbers*/
+	for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
+		struct rte_mbuf *bufs[MAX_PKT_BURST];
+
+		if (ports_fwd_array[i].in_port_id == PORT_RESET)
+			continue;
+
+		if (ports_fwd_array[i].out_port_id == PORT_RESET)
+			continue;
+
+		/* if status active, i count is in port*/
+		in_port = i;
+		out_port = ports_fwd_array[i].out_port_id;
+
+		/* Get burst of RX packets, from first port of pair. */
+		/*first port rx, second port tx*/
+		nb_rx = ports_fwd_array[in_port].rx_func(in_port, 0, bufs,
+			MAX_PKT_BURST);
+		if (unlikely(nb_rx == 0))
+			continue;
+
+		port_map[in_port].stats->rx += nb_rx;
+
+		/* Send burst of TX packets, to second port of pair. */
+		nb_tx = ports_fwd_array[out_port].tx_func(out_port, 0, bufs,
+			nb_rx);
+
+		port_map[out_port].stats->tx += nb_tx;
+
+		/* Free any unsent packets. */
+		if (unlikely(nb_tx < nb_rx)) {
+			port_map[out_port].stats->tx_drop += nb_rx - nb_tx;
+			for (buf = nb_tx; buf < nb_rx; buf++)
+				rte_pktmbuf_free(bufs[buf]);
+		}
+	}
+}
diff --git a/src/shared/basic_forwarder.h b/src/shared/basic_forwarder.h
new file mode 100644
index 0000000..173cab3
--- /dev/null
+++ b/src/shared/basic_forwarder.h
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2019 Nippon Telegraph and Telephone Corporation
+ */
+
+#ifndef __SHARED_FORWARDER_H__
+#define __SHARED_FORWARDER_H__
+
+struct port_map port_map[RTE_MAX_ETHPORTS];
+struct port ports_fwd_array[RTE_MAX_ETHPORTS];
+
+void forward(void);
+
+#endif
diff --git a/src/shared/common.h b/src/shared/common.h
index cbd1bcf..9c46a64 100644
--- a/src/shared/common.h
+++ b/src/shared/common.h
@@ -29,6 +29,9 @@
 #define RTE_MP_RX_DESC_DEFAULT 512
 #define RTE_MP_TX_DESC_DEFAULT 512
 
+/* Packets are read in a burst of size MAX_PKT_BURST from RX queue. */
+#define MAX_PKT_BURST 32
+
 #define VDEV_ETH_RING "eth_ring"
 #define VDEV_NET_RING "net_ring"
 #define VDEV_ETH_VHOST "eth_vhost"
diff --git a/src/shared/secondary/common.h b/src/shared/secondary/common.h
index 44c1b8b..4b70708 100644
--- a/src/shared/secondary/common.h
+++ b/src/shared/secondary/common.h
@@ -5,8 +5,6 @@
 #ifndef __SHARED_SECONDARY_COMMON_H__
 #define __SHARED_SECONDARY_COMMON_H__
 
-#define MAX_PKT_BURST 32
-
 #define IPADDR_LEN 16  /* Length of IP address in string. */
 
 /**
-- 
2.17.1