[spp] [PATCH 1/6] shared: fix include error of add_port libs

[ogawa.yasufumi@lab.ntt.co.jp]

From: Yasufumi Ogawa <ogawa.yasufumi@lab.ntt.co.jp>

Change common add_port libraries not to be static function to avoid
`not used` error while compiling.

Signed-off-by: Yasufumi Ogawa <ogawa.yasufumi@lab.ntt.co.jp>
---
 src/shared/secondary/add_port.c | 336 +++++++++++++++++++++++++++
 src/shared/secondary/add_port.h | 386 ++++++--------------------------
 2 files changed, 400 insertions(+), 322 deletions(-)
 create mode 100644 src/shared/secondary/add_port.c

diff --git a/src/shared/secondary/add_port.c b/src/shared/secondary/add_port.c
new file mode 100644
index 0000000..ca55a04
--- /dev/null
+++ b/src/shared/secondary/add_port.c
@@ -0,0 +1,336 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2015-2016 Intel Corporation
+ * Copyright(c) 2019 Nippon Telegraph and Telephone Corporation
+ */
+
+#include <arpa/inet.h>
+#include <stdio.h>
+#include <rte_ethdev_driver.h>
+#include <rte_eth_ring.h>
+
+#include "shared/common.h"
+#include "shared/secondary/add_port.h"
+#include "shared/secondary/utils.h"
+
+char *
+get_vhost_backend_name(unsigned int id)
+{
+	/*
+	 * buffer for return value. Size calculated by %u being replaced
+	 * by maximum 3 digits (plus an extra byte for safety)
+	 */
+	static char buffer[sizeof(VHOST_BACKEND_NAME) + 2];
+
+	snprintf(buffer, sizeof(buffer) - 1, VHOST_BACKEND_NAME, id);
+	return buffer;
+}
+
+char *
+get_vhost_iface_name(unsigned int id)
+{
+	/*
+	 * buffer for return value. Size calculated by %u being replaced
+	 * by maximum 3 digits (plus an extra byte for safety)
+	 */
+	static char buffer[sizeof(VHOST_IFACE_NAME) + 2];
+
+	snprintf(buffer, sizeof(buffer) - 1, VHOST_IFACE_NAME, id);
+	return buffer;
+}
+
+static inline const char *
+get_pcap_pmd_name(int id)
+{
+	static char buffer[sizeof(PCAP_PMD_DEV_NAME) + 2];
+	snprintf(buffer, sizeof(buffer) - 1, PCAP_PMD_DEV_NAME, id);
+	return buffer;
+}
+
+static inline const char *
+get_null_pmd_name(int id)
+{
+	static char buffer[sizeof(NULL_PMD_DEV_NAME) + 2];
+	snprintf(buffer, sizeof(buffer) - 1, NULL_PMD_DEV_NAME, id);
+	return buffer;
+}
+
+/*
+ * Create an empty rx pcap file to given path if it does not exit
+ * Return 0 for succeeded, or -1 for failed.
+ */
+static int
+create_pcap_rx(char *rx_fpath)
+{
+	int res;
+	FILE *tmp_fp;
+	char cmd_str[256];
+
+	// empty file is required for 'text2pcap' command for
+	// creating a pcap file.
+	char template[] = "/tmp/spp-emptyfile.txt";
+
+	// create empty file if it is not exist
+	tmp_fp = fopen(template, "r");
+	if (tmp_fp == NULL) {
+		(tmp_fp = fopen(template, "w"));
+		if (tmp_fp == NULL) {
+			RTE_LOG(ERR, SHARED, "Failed to open %s\n", template);
+			return -1;
+		}
+	}
+
+	sprintf(cmd_str, "text2pcap %s %s", template, rx_fpath);
+	res = system(cmd_str);
+	if (res != 0) {
+		RTE_LOG(ERR, SHARED,
+				"Failed to create pcap device %s\n",
+				rx_fpath);
+		return -1;
+	}
+	RTE_LOG(INFO, SHARED, "PCAP device created\n");
+	fclose(tmp_fp);
+	return 0;
+}
+
+/*
+ * Create a ring PMD with given ring_id.
+ */
+int
+add_ring_pmd(int ring_id)
+{
+	struct rte_ring *ring;
+	int res;
+	char rx_queue_name[32];  /* Prefix and number like as 'eth_ring_0' */
+
+	memset(rx_queue_name, '\0', sizeof(rx_queue_name));
+	sprintf(rx_queue_name, "%s", get_rx_queue_name(ring_id));
+
+	/* Look up ring with provided ring_id */
+	ring = rte_ring_lookup(rx_queue_name);
+	if (ring == NULL) {
+		RTE_LOG(ERR, SHARED,
+			"Failed to get RX ring %s - is primary running?\n",
+			rx_queue_name);
+		return -1;
+	}
+	RTE_LOG(INFO, SHARED, "Looked up ring '%s'\n", rx_queue_name);
+
+	/* create ring pmd*/
+	res = rte_eth_from_ring(ring);
+	if (res < 0) {
+		RTE_LOG(ERR, SHARED,
+			"Cannot create eth dev with rte_eth_from_ring()\n");
+		return -1;
+	}
+	RTE_LOG(INFO, SHARED, "Created ring PMD: %d\n", res);
+
+	return res;
+}
+
+int
+add_vhost_pmd(int index)
+{
+	struct rte_eth_conf port_conf = {
+		.rxmode = { .max_rx_pkt_len = ETHER_MAX_LEN }
+	};
+	struct rte_mempool *mp;
+	uint16_t vhost_port_id;
+	int nr_queues = 1;
+	const char *name;
+	char devargs[64];
+	char *iface;
+	uint16_t q;
+	int ret;
+
+	mp = rte_mempool_lookup(PKTMBUF_POOL_NAME);
+	if (mp == NULL)
+		rte_exit(EXIT_FAILURE, "Cannot get mempool for mbufs\n");
+
+	/* eth_vhost0 index 0 iface /tmp/sock0 on numa 0 */
+	name = get_vhost_backend_name(index);
+	iface = get_vhost_iface_name(index);
+
+	sprintf(devargs, "%s,iface=%s,queues=%d", name, iface, nr_queues);
+	ret = dev_attach_by_devargs(devargs, &vhost_port_id);
+	if (ret < 0)
+		return ret;
+
+	ret = rte_eth_dev_configure(vhost_port_id, nr_queues, nr_queues,
+		&port_conf);
+	if (ret < 0)
+		return ret;
+
+	/* Allocate and set up 1 RX queue per Ethernet port. */
+	for (q = 0; q < nr_queues; q++) {
+		ret = rte_eth_rx_queue_setup(vhost_port_id, q, NR_DESCS,
+			rte_eth_dev_socket_id(vhost_port_id), NULL, mp);
+		if (ret < 0)
+			return ret;
+	}
+
+	/* Allocate and set up 1 TX queue per Ethernet port. */
+	for (q = 0; q < nr_queues; q++) {
+		ret = rte_eth_tx_queue_setup(vhost_port_id, q, NR_DESCS,
+			rte_eth_dev_socket_id(vhost_port_id), NULL);
+		if (ret < 0)
+			return ret;
+	}
+
+	/* Start the Ethernet port. */
+	ret = rte_eth_dev_start(vhost_port_id);
+	if (ret < 0)
+		return ret;
+
+	RTE_LOG(DEBUG, SHARED, "vhost port id %d\n", vhost_port_id);
+
+	return vhost_port_id;
+}
+
+/*
+ * Open pcap files with given index for rx and tx.
+ * Index is given as a argument of 'patch' command.
+ * This function returns a port ID if it is succeeded,
+ * or negative int if failed.
+ */
+int
+add_pcap_pmd(int index)
+{
+	struct rte_eth_conf port_conf = {
+		.rxmode = { .max_rx_pkt_len = ETHER_MAX_LEN }
+	};
+
+	struct rte_mempool *mp;
+	const char *name;
+	char devargs[256];
+	uint16_t pcap_pmd_port_id;
+	uint16_t nr_queues = 1;
+	int ret;
+
+	// PCAP file path
+	char rx_fpath[128];
+	char tx_fpath[128];
+
+	FILE *rx_fp;
+
+	sprintf(rx_fpath, PCAP_IFACE_RX, index);
+	sprintf(tx_fpath, PCAP_IFACE_TX, index);
+
+	// create rx pcap file if it does not exist
+	rx_fp = fopen(rx_fpath, "r");
+	if (rx_fp == NULL) {
+		ret = create_pcap_rx(rx_fpath);
+		if (ret < 0)
+			return ret;
+	}
+
+	mp = rte_mempool_lookup(PKTMBUF_POOL_NAME);
+	if (mp == NULL)
+		rte_exit(EXIT_FAILURE, "Cannon get mempool for mbuf\n");
+
+	name = get_pcap_pmd_name(index);
+	sprintf(devargs,
+			"%s,rx_pcap=%s,tx_pcap=%s",
+			name, rx_fpath, tx_fpath);
+	ret = dev_attach_by_devargs(devargs, &pcap_pmd_port_id);
+
+	if (ret < 0)
+		return ret;
+
+	ret = rte_eth_dev_configure(
+			pcap_pmd_port_id, nr_queues, nr_queues, &port_conf);
+
+	if (ret < 0)
+		return ret;
+
+	/* Allocate and set up 1 RX queue per Ethernet port. */
+	uint16_t q;
+	for (q = 0; q < nr_queues; q++) {
+		ret = rte_eth_rx_queue_setup(
+				pcap_pmd_port_id, q, NR_DESCS,
+				rte_eth_dev_socket_id(pcap_pmd_port_id),
+				NULL, mp);
+		if (ret < 0)
+			return ret;
+	}
+
+	/* Allocate and set up 1 TX queue per Ethernet port. */
+	for (q = 0; q < nr_queues; q++) {
+		ret = rte_eth_tx_queue_setup(
+				pcap_pmd_port_id, q, NR_DESCS,
+				rte_eth_dev_socket_id(pcap_pmd_port_id),
+				NULL);
+		if (ret < 0)
+			return ret;
+	}
+
+	ret = rte_eth_dev_start(pcap_pmd_port_id);
+
+	if (ret < 0)
+		return ret;
+
+	RTE_LOG(DEBUG, SHARED, "pcap port id %d\n", pcap_pmd_port_id);
+
+	return pcap_pmd_port_id;
+}
+
+int
+add_null_pmd(int index)
+{
+	struct rte_eth_conf port_conf = {
+			.rxmode = { .max_rx_pkt_len = ETHER_MAX_LEN }
+	};
+
+	struct rte_mempool *mp;
+	const char *name;
+	char devargs[64];
+	uint16_t null_pmd_port_id;
+	uint16_t nr_queues = 1;
+
+	int ret;
+
+	mp = rte_mempool_lookup(PKTMBUF_POOL_NAME);
+	if (mp == NULL)
+		rte_exit(EXIT_FAILURE, "Cannon get mempool for mbuf\n");
+
+	name = get_null_pmd_name(index);
+	sprintf(devargs, "%s", name);
+	ret = dev_attach_by_devargs(devargs, &null_pmd_port_id);
+	if (ret < 0)
+		return ret;
+
+	ret = rte_eth_dev_configure(
+			null_pmd_port_id, nr_queues, nr_queues,
+			&port_conf);
+	if (ret < 0)
+		return ret;
+
+	/* Allocate and set up 1 RX queue per Ethernet port. */
+	uint16_t q;
+	for (q = 0; q < nr_queues; q++) {
+		ret = rte_eth_rx_queue_setup(
+				null_pmd_port_id, q, NR_DESCS,
+				rte_eth_dev_socket_id(
+					null_pmd_port_id), NULL, mp);
+		if (ret < 0)
+			return ret;
+	}
+
+	/* Allocate and set up 1 TX queue per Ethernet port. */
+	for (q = 0; q < nr_queues; q++) {
+		ret = rte_eth_tx_queue_setup(
+				null_pmd_port_id, q, NR_DESCS,
+				rte_eth_dev_socket_id(
+					null_pmd_port_id),
+				NULL);
+		if (ret < 0)
+			return ret;
+	}
+
+	ret = rte_eth_dev_start(null_pmd_port_id);
+	if (ret < 0)
+		return ret;
+
+	RTE_LOG(DEBUG, SHARED, "null port id %d\n", null_pmd_port_id);
+
+	return null_pmd_port_id;
+}
diff --git a/src/shared/secondary/add_port.h b/src/shared/secondary/add_port.h
index 83f2514..cfae1af 100644
--- a/src/shared/secondary/add_port.h
+++ b/src/shared/secondary/add_port.h
@@ -6,9 +6,6 @@
 #ifndef _SHARED_SECONDARY_ADD_PORT_H_
 #define _SHARED_SECONDARY_ADD_PORT_H_
 
-#include <arpa/inet.h>
-#include "utils.h"
-
 // The number of receive descriptors to allocate for the receive ring.
 #define NR_DESCS 128
 
@@ -23,327 +20,72 @@
 
 #define RTE_LOGTYPE_SHARED RTE_LOGTYPE_USER1
 
-static inline const char *
-get_vhost_backend_name(unsigned int id)
-{
-	/*
-	 * buffer for return value. Size calculated by %u being replaced
-	 * by maximum 3 digits (plus an extra byte for safety)
-	 */
-	static char buffer[sizeof(VHOST_BACKEND_NAME) + 2];
-
-	snprintf(buffer, sizeof(buffer) - 1, VHOST_BACKEND_NAME, id);
-	return buffer;
-}
-
-static inline char *
-get_vhost_iface_name(unsigned int id)
-{
-	/*
-	 * buffer for return value. Size calculated by %u being replaced
-	 * by maximum 3 digits (plus an extra byte for safety)
-	 */
-	static char buffer[sizeof(VHOST_IFACE_NAME) + 2];
-
-	snprintf(buffer, sizeof(buffer) - 1, VHOST_IFACE_NAME, id);
-	return buffer;
-}
-
-static inline const char *
-get_pcap_pmd_name(int id)
-{
-	static char buffer[sizeof(PCAP_PMD_DEV_NAME) + 2];
-	snprintf(buffer, sizeof(buffer) - 1, PCAP_PMD_DEV_NAME, id);
-	return buffer;
-}
-
-static inline const char *
-get_null_pmd_name(int id)
-{
-	static char buffer[sizeof(NULL_PMD_DEV_NAME) + 2];
-	snprintf(buffer, sizeof(buffer) - 1, NULL_PMD_DEV_NAME, id);
-	return buffer;
-}
-
-/*
- * Create an empty rx pcap file to given path if it does not exit
- * Return 0 for succeeded, or -1 for failed.
+/**
+ * Get unique name used to reserve vhost interface.
+ *
+ * @param port_id
+ *   ID of the next possible valid port.
+ * @return
+ *   Unique name with VHOST_BACKEND_NAME and ID.
+ *   e.g. `eth_vhost0`
  */
-static int
-create_pcap_rx(char *rx_fpath)
-{
-	int res;
-	FILE *tmp_fp;
-	char cmd_str[256];
-
-	// empty file is required for 'text2pcap' command for
-	// creating a pcap file.
-	char template[] = "/tmp/spp-emptyfile.txt";
-
-	// create empty file if it is not exist
-	tmp_fp = fopen(template, "r");
-	if (tmp_fp == NULL) {
-		(tmp_fp = fopen(template, "w"));
-		if (tmp_fp == NULL) {
-			RTE_LOG(ERR, SHARED, "Failed to open %s\n", template);
-			return -1;
-		}
-	}
-
-	sprintf(cmd_str, "text2pcap %s %s", template, rx_fpath);
-	res = system(cmd_str);
-	if (res != 0) {
-		RTE_LOG(ERR, SHARED,
-				"Failed to create pcap device %s\n",
-				rx_fpath);
-		return -1;
-	}
-	RTE_LOG(INFO, SHARED, "PCAP device created\n");
-	fclose(tmp_fp);
-	return 0;
-}
-
-/*
- * Create ring PMD with given ring_id.
+char *
+get_vhost_backend_name(unsigned int id);
+
+/**
+ * Get vhost name as the path of sock device.
+ *
+ * @param port_id
+ *   ID of the next possible valid port.
+ * @return
+ *   Unique name with VHOST_IFACE_NAME and ID.
+ *   e.g. `tmp/sock0`
  */
-static int
-add_ring_pmd(int ring_id)
-{
-	struct rte_ring *ring;
-	int res;
-	char rx_queue_name[32];  /* Prefix and number like as 'eth_ring_0' */
-
-	memset(rx_queue_name, '\0', sizeof(rx_queue_name));
-	sprintf(rx_queue_name, "%s", get_rx_queue_name(ring_id));
-
-	/* Look up ring with provided ring_id */
-	ring = rte_ring_lookup(rx_queue_name);
-	if (ring == NULL) {
-		RTE_LOG(ERR, SHARED,
-			"Failed to get RX ring %s - is primary running?\n",
-			rx_queue_name);
-		return -1;
-	}
-	RTE_LOG(INFO, SHARED, "Looked up ring '%s'\n", rx_queue_name);
-
-	/* create ring pmd*/
-	res = rte_eth_from_ring(ring);
-	if (res < 0) {
-		RTE_LOG(ERR, SHARED,
-			"Cannot create eth dev with rte_eth_from_ring()\n");
-		return -1;
-	}
-	RTE_LOG(INFO, SHARED, "Created ring PMD: %d\n", res);
-
-	return res;
-}
-
-static int
-add_vhost_pmd(int index)
-{
-	struct rte_eth_conf port_conf = {
-		.rxmode = { .max_rx_pkt_len = ETHER_MAX_LEN }
-	};
-	struct rte_mempool *mp;
-	uint16_t vhost_port_id;
-	int nr_queues = 1;
-	const char *name;
-	char devargs[64];
-	char *iface;
-	uint16_t q;
-	int ret;
-
-	mp = rte_mempool_lookup(PKTMBUF_POOL_NAME);
-	if (mp == NULL)
-		rte_exit(EXIT_FAILURE, "Cannot get mempool for mbufs\n");
-
-	/* eth_vhost0 index 0 iface /tmp/sock0 on numa 0 */
-	name = get_vhost_backend_name(index);
-	iface = get_vhost_iface_name(index);
-
-	sprintf(devargs, "%s,iface=%s,queues=%d", name, iface, nr_queues);
-	ret = dev_attach_by_devargs(devargs, &vhost_port_id);
-	if (ret < 0)
-		return ret;
-
-	ret = rte_eth_dev_configure(vhost_port_id, nr_queues, nr_queues,
-		&port_conf);
-	if (ret < 0)
-		return ret;
-
-	/* Allocate and set up 1 RX queue per Ethernet port. */
-	for (q = 0; q < nr_queues; q++) {
-		ret = rte_eth_rx_queue_setup(vhost_port_id, q, NR_DESCS,
-			rte_eth_dev_socket_id(vhost_port_id), NULL, mp);
-		if (ret < 0)
-			return ret;
-	}
-
-	/* Allocate and set up 1 TX queue per Ethernet port. */
-	for (q = 0; q < nr_queues; q++) {
-		ret = rte_eth_tx_queue_setup(vhost_port_id, q, NR_DESCS,
-			rte_eth_dev_socket_id(vhost_port_id), NULL);
-		if (ret < 0)
-			return ret;
-	}
-
-	/* Start the Ethernet port. */
-	ret = rte_eth_dev_start(vhost_port_id);
-	if (ret < 0)
-		return ret;
-
-	RTE_LOG(DEBUG, SHARED, "vhost port id %d\n", vhost_port_id);
-
-	return vhost_port_id;
-}
-
-/*
- * Open pcap files with given index for rx and tx.
- * Index is given as a argument of 'patch' command.
- * This function returns a port ID if it is succeeded,
- * or negative int if failed.
+char *
+get_vhost_iface_name(unsigned int id);
+
+/**
+ * Create a ring PMD with given ring_id.
+ *
+ * @param port_id
+ *   ID of the next possible valid port.
+ * @return
+ *   Unique port ID
  */
-static int
-add_pcap_pmd(int index)
-{
-	struct rte_eth_conf port_conf = {
-		.rxmode = { .max_rx_pkt_len = ETHER_MAX_LEN }
-	};
-
-	struct rte_mempool *mp;
-	const char *name;
-	char devargs[256];
-	uint16_t pcap_pmd_port_id;
-	uint16_t nr_queues = 1;
-	int ret;
-
-	// PCAP file path
-	char rx_fpath[128];
-	char tx_fpath[128];
-
-	FILE *rx_fp;
-
-	sprintf(rx_fpath, PCAP_IFACE_RX, index);
-	sprintf(tx_fpath, PCAP_IFACE_TX, index);
-
-	// create rx pcap file if it does not exist
-	rx_fp = fopen(rx_fpath, "r");
-	if (rx_fp == NULL) {
-		ret = create_pcap_rx(rx_fpath);
-		if (ret < 0)
-			return ret;
-	}
-
-	mp = rte_mempool_lookup(PKTMBUF_POOL_NAME);
-	if (mp == NULL)
-		rte_exit(EXIT_FAILURE, "Cannon get mempool for mbuf\n");
-
-	name = get_pcap_pmd_name(index);
-	sprintf(devargs,
-			"%s,rx_pcap=%s,tx_pcap=%s",
-			name, rx_fpath, tx_fpath);
-	ret = dev_attach_by_devargs(devargs, &pcap_pmd_port_id);
-
-	if (ret < 0)
-		return ret;
-
-	ret = rte_eth_dev_configure(
-			pcap_pmd_port_id, nr_queues, nr_queues, &port_conf);
-
-	if (ret < 0)
-		return ret;
-
-	/* Allocate and set up 1 RX queue per Ethernet port. */
-	uint16_t q;
-	for (q = 0; q < nr_queues; q++) {
-		ret = rte_eth_rx_queue_setup(
-				pcap_pmd_port_id, q, NR_DESCS,
-				rte_eth_dev_socket_id(pcap_pmd_port_id),
-				NULL, mp);
-		if (ret < 0)
-			return ret;
-	}
-
-	/* Allocate and set up 1 TX queue per Ethernet port. */
-	for (q = 0; q < nr_queues; q++) {
-		ret = rte_eth_tx_queue_setup(
-				pcap_pmd_port_id, q, NR_DESCS,
-				rte_eth_dev_socket_id(pcap_pmd_port_id),
-				NULL);
-		if (ret < 0)
-			return ret;
-	}
-
-	ret = rte_eth_dev_start(pcap_pmd_port_id);
-
-	if (ret < 0)
-		return ret;
-
-	RTE_LOG(DEBUG, SHARED, "pcap port id %d\n", pcap_pmd_port_id);
-
-	return pcap_pmd_port_id;
-}
-
-static int
-add_null_pmd(int index)
-{
-	struct rte_eth_conf port_conf = {
-			.rxmode = { .max_rx_pkt_len = ETHER_MAX_LEN }
-	};
-
-	struct rte_mempool *mp;
-	const char *name;
-	char devargs[64];
-	uint16_t null_pmd_port_id;
-	uint16_t nr_queues = 1;
-
-	int ret;
-
-	mp = rte_mempool_lookup(PKTMBUF_POOL_NAME);
-	if (mp == NULL)
-		rte_exit(EXIT_FAILURE, "Cannon get mempool for mbuf\n");
-
-	name = get_null_pmd_name(index);
-	sprintf(devargs, "%s", name);
-	ret = dev_attach_by_devargs(devargs, &null_pmd_port_id);
-	if (ret < 0)
-		return ret;
-
-	ret = rte_eth_dev_configure(
-			null_pmd_port_id, nr_queues, nr_queues,
-			&port_conf);
-	if (ret < 0)
-		return ret;
-
-	/* Allocate and set up 1 RX queue per Ethernet port. */
-	uint16_t q;
-	for (q = 0; q < nr_queues; q++) {
-		ret = rte_eth_rx_queue_setup(
-				null_pmd_port_id, q, NR_DESCS,
-				rte_eth_dev_socket_id(
-					null_pmd_port_id), NULL, mp);
-		if (ret < 0)
-			return ret;
-	}
-
-	/* Allocate and set up 1 TX queue per Ethernet port. */
-	for (q = 0; q < nr_queues; q++) {
-		ret = rte_eth_tx_queue_setup(
-				null_pmd_port_id, q, NR_DESCS,
-				rte_eth_dev_socket_id(
-					null_pmd_port_id),
-				NULL);
-		if (ret < 0)
-			return ret;
-	}
-
-	ret = rte_eth_dev_start(null_pmd_port_id);
-	if (ret < 0)
-		return ret;
-
-	RTE_LOG(DEBUG, SHARED, "null port id %d\n", null_pmd_port_id);
-
-	return null_pmd_port_id;
-}
+int
+add_ring_pmd(int ring_id);
+
+/**
+ * Create a vhost PMD with given ring_id.
+ *
+ * @param port_id
+ *   ID of the next possible valid port.
+ * @return
+ *   Unique port ID
+ */
+int
+add_vhost_pmd(int index);
+
+/**
+ * Create a PCAP PMD with given ring_id.
+ *
+ * @param port_id
+ *   ID of the next possible valid port.
+ * @return
+ *   Unique port ID
+ */
+int
+add_pcap_pmd(int index);
+
+/**
+ * Create a null PMD with given ID.
+ *
+ * @param port_id
+ *   ID of the next possible valid port.
+ * @return
+ *   Unique port ID
+ */
+int
+add_null_pmd(int index);
 
 #endif
-- 
2.17.1