Imported Upstream version 16.11

Change-Id: I1944c65ddc88a9ad70f8c0eb6731552b84fbcb77
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>

1 files changed, 0 insertions, 795 deletions

diff --git a/lib/librte_vhost/vhost_user/vhost-net-user.c b/lib/librte_vhost/vhost_user/vhost-net-user.c
deleted file mode 100644
index b35594d9..00000000
--- a/lib/librte_vhost/vhost_user/vhost-net-user.c
+++ /dev/null
@@ -1,795 +0,0 @@
-/*-
- *   BSD LICENSE
- *
- *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
- *   All rights reserved.
- *
- *   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.
- *     * Neither the name of Intel Corporation nor the names of its
- *       contributors may be used to endorse or promote products derived
- *       from this software without specific prior written permission.
- *
- *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <stdint.h>
-#include <stdio.h>
-#include <stdbool.h>
-#include <limits.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <string.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <sys/un.h>
-#include <sys/queue.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <pthread.h>
-
-#include <rte_log.h>
-#include <rte_virtio_net.h>
-
-#include "fd_man.h"
-#include "vhost-net-user.h"
-#include "vhost-net.h"
-#include "virtio-net-user.h"
-
-/*
- * Every time rte_vhost_driver_register() is invoked, an associated
- * vhost_user_socket struct will be created.
- */
-struct vhost_user_socket {
-	char *path;
-	int listenfd;
-	int connfd;
-	bool is_server;
-	bool reconnect;
-};
-
-struct vhost_user_connection {
-	struct vhost_user_socket *vsocket;
-	int vid;
-};
-
-#define MAX_VHOST_SOCKET 1024
-struct vhost_user {
-	struct vhost_user_socket *vsockets[MAX_VHOST_SOCKET];
-	struct fdset fdset;
-	int vsocket_cnt;
-	pthread_mutex_t mutex;
-};
-
-#define MAX_VIRTIO_BACKLOG 128
-
-static void vhost_user_server_new_connection(int fd, void *data, int *remove);
-static void vhost_user_msg_handler(int fd, void *dat, int *remove);
-static int vhost_user_create_client(struct vhost_user_socket *vsocket);
-
-static struct vhost_user vhost_user = {
-	.fdset = {
-		.fd = { [0 ... MAX_FDS - 1] = {-1, NULL, NULL, NULL, 0} },
-		.fd_mutex = PTHREAD_MUTEX_INITIALIZER,
-		.num = 0
-	},
-	.vsocket_cnt = 0,
-	.mutex = PTHREAD_MUTEX_INITIALIZER,
-};
-
-static const char *vhost_message_str[VHOST_USER_MAX] = {
-	[VHOST_USER_NONE] = "VHOST_USER_NONE",
-	[VHOST_USER_GET_FEATURES] = "VHOST_USER_GET_FEATURES",
-	[VHOST_USER_SET_FEATURES] = "VHOST_USER_SET_FEATURES",
-	[VHOST_USER_SET_OWNER] = "VHOST_USER_SET_OWNER",
-	[VHOST_USER_RESET_OWNER] = "VHOST_USER_RESET_OWNER",
-	[VHOST_USER_SET_MEM_TABLE] = "VHOST_USER_SET_MEM_TABLE",
-	[VHOST_USER_SET_LOG_BASE] = "VHOST_USER_SET_LOG_BASE",
-	[VHOST_USER_SET_LOG_FD] = "VHOST_USER_SET_LOG_FD",
-	[VHOST_USER_SET_VRING_NUM] = "VHOST_USER_SET_VRING_NUM",
-	[VHOST_USER_SET_VRING_ADDR] = "VHOST_USER_SET_VRING_ADDR",
-	[VHOST_USER_SET_VRING_BASE] = "VHOST_USER_SET_VRING_BASE",
-	[VHOST_USER_GET_VRING_BASE] = "VHOST_USER_GET_VRING_BASE",
-	[VHOST_USER_SET_VRING_KICK] = "VHOST_USER_SET_VRING_KICK",
-	[VHOST_USER_SET_VRING_CALL] = "VHOST_USER_SET_VRING_CALL",
-	[VHOST_USER_SET_VRING_ERR]  = "VHOST_USER_SET_VRING_ERR",
-	[VHOST_USER_GET_PROTOCOL_FEATURES]  = "VHOST_USER_GET_PROTOCOL_FEATURES",
-	[VHOST_USER_SET_PROTOCOL_FEATURES]  = "VHOST_USER_SET_PROTOCOL_FEATURES",
-	[VHOST_USER_GET_QUEUE_NUM]  = "VHOST_USER_GET_QUEUE_NUM",
-	[VHOST_USER_SET_VRING_ENABLE]  = "VHOST_USER_SET_VRING_ENABLE",
-	[VHOST_USER_SEND_RARP]  = "VHOST_USER_SEND_RARP",
-};
-
-/* return bytes# of read on success or negative val on failure. */
-static int
-read_fd_message(int sockfd, char *buf, int buflen, int *fds, int fd_num)
-{
-	struct iovec iov;
-	struct msghdr msgh;
-	size_t fdsize = fd_num * sizeof(int);
-	char control[CMSG_SPACE(fdsize)];
-	struct cmsghdr *cmsg;
-	int ret;
-
-	memset(&msgh, 0, sizeof(msgh));
-	iov.iov_base = buf;
-	iov.iov_len  = buflen;
-
-	msgh.msg_iov = &iov;
-	msgh.msg_iovlen = 1;
-	msgh.msg_control = control;
-	msgh.msg_controllen = sizeof(control);
-
-	ret = recvmsg(sockfd, &msgh, 0);
-	if (ret <= 0) {
-		RTE_LOG(ERR, VHOST_CONFIG, "recvmsg failed\n");
-		return ret;
-	}
-
-	if (msgh.msg_flags & (MSG_TRUNC | MSG_CTRUNC)) {
-		RTE_LOG(ERR, VHOST_CONFIG, "truncted msg\n");
-		return -1;
-	}
-
-	for (cmsg = CMSG_FIRSTHDR(&msgh); cmsg != NULL;
-		cmsg = CMSG_NXTHDR(&msgh, cmsg)) {
-		if ((cmsg->cmsg_level == SOL_SOCKET) &&
-			(cmsg->cmsg_type == SCM_RIGHTS)) {
-			memcpy(fds, CMSG_DATA(cmsg), fdsize);
-			break;
-		}
-	}
-
-	return ret;
-}
-
-/* return bytes# of read on success or negative val on failure. */
-static int
-read_vhost_message(int sockfd, struct VhostUserMsg *msg)
-{
-	int ret;
-
-	ret = read_fd_message(sockfd, (char *)msg, VHOST_USER_HDR_SIZE,
-		msg->fds, VHOST_MEMORY_MAX_NREGIONS);
-	if (ret <= 0)
-		return ret;
-
-	if (msg && msg->size) {
-		if (msg->size > sizeof(msg->payload)) {
-			RTE_LOG(ERR, VHOST_CONFIG,
-				"invalid msg size: %d\n", msg->size);
-			return -1;
-		}
-		ret = read(sockfd, &msg->payload, msg->size);
-		if (ret <= 0)
-			return ret;
-		if (ret != (int)msg->size) {
-			RTE_LOG(ERR, VHOST_CONFIG,
-				"read control message failed\n");
-			return -1;
-		}
-	}
-
-	return ret;
-}
-
-static int
-send_fd_message(int sockfd, char *buf, int buflen, int *fds, int fd_num)
-{
-
-	struct iovec iov;
-	struct msghdr msgh;
-	size_t fdsize = fd_num * sizeof(int);
-	char control[CMSG_SPACE(fdsize)];
-	struct cmsghdr *cmsg;
-	int ret;
-
-	memset(&msgh, 0, sizeof(msgh));
-	iov.iov_base = buf;
-	iov.iov_len = buflen;
-
-	msgh.msg_iov = &iov;
-	msgh.msg_iovlen = 1;
-
-	if (fds && fd_num > 0) {
-		msgh.msg_control = control;
-		msgh.msg_controllen = sizeof(control);
-		cmsg = CMSG_FIRSTHDR(&msgh);
-		cmsg->cmsg_len = CMSG_LEN(fdsize);
-		cmsg->cmsg_level = SOL_SOCKET;
-		cmsg->cmsg_type = SCM_RIGHTS;
-		memcpy(CMSG_DATA(cmsg), fds, fdsize);
-	} else {
-		msgh.msg_control = NULL;
-		msgh.msg_controllen = 0;
-	}
-
-	do {
-		ret = sendmsg(sockfd, &msgh, 0);
-	} while (ret < 0 && errno == EINTR);
-
-	if (ret < 0) {
-		RTE_LOG(ERR, VHOST_CONFIG,  "sendmsg error\n");
-		return ret;
-	}
-
-	return ret;
-}
-
-static int
-send_vhost_message(int sockfd, struct VhostUserMsg *msg)
-{
-	int ret;
-
-	if (!msg)
-		return 0;
-
-	msg->flags &= ~VHOST_USER_VERSION_MASK;
-	msg->flags |= VHOST_USER_VERSION;
-	msg->flags |= VHOST_USER_REPLY_MASK;
-
-	ret = send_fd_message(sockfd, (char *)msg,
-		VHOST_USER_HDR_SIZE + msg->size, NULL, 0);
-
-	return ret;
-}
-
-
-static void
-vhost_user_add_connection(int fd, struct vhost_user_socket *vsocket)
-{
-	int vid;
-	size_t size;
-	struct vhost_user_connection *conn;
-	int ret;
-
-	conn = malloc(sizeof(*conn));
-	if (conn == NULL) {
-		close(fd);
-		return;
-	}
-
-	vid = vhost_new_device();
-	if (vid == -1) {
-		close(fd);
-		free(conn);
-		return;
-	}
-
-	size = strnlen(vsocket->path, PATH_MAX);
-	vhost_set_ifname(vid, vsocket->path, size);
-
-	RTE_LOG(INFO, VHOST_CONFIG, "new device, handle is %d\n", vid);
-
-	vsocket->connfd = fd;
-	conn->vsocket = vsocket;
-	conn->vid = vid;
-	ret = fdset_add(&vhost_user.fdset, fd, vhost_user_msg_handler,
-			NULL, conn);
-	if (ret < 0) {
-		vsocket->connfd = -1;
-		free(conn);
-		close(fd);
-		RTE_LOG(ERR, VHOST_CONFIG,
-			"failed to add fd %d into vhost server fdset\n",
-			fd);
-	}
-}
-
-/* call back when there is new vhost-user connection from client  */
-static void
-vhost_user_server_new_connection(int fd, void *dat, int *remove __rte_unused)
-{
-	struct vhost_user_socket *vsocket = dat;
-
-	fd = accept(fd, NULL, NULL);
-	if (fd < 0)
-		return;
-
-	RTE_LOG(INFO, VHOST_CONFIG, "new vhost user connection is %d\n", fd);
-	vhost_user_add_connection(fd, vsocket);
-}
-
-/* callback when there is message on the connfd */
-static void
-vhost_user_msg_handler(int connfd, void *dat, int *remove)
-{
-	int vid;
-	struct vhost_user_connection *conn = dat;
-	struct VhostUserMsg msg;
-	uint64_t features;
-	int ret;
-
-	vid = conn->vid;
-	ret = read_vhost_message(connfd, &msg);
-	if (ret <= 0 || msg.request >= VHOST_USER_MAX) {
-		struct vhost_user_socket *vsocket = conn->vsocket;
-
-		if (ret < 0)
-			RTE_LOG(ERR, VHOST_CONFIG,
-				"vhost read message failed\n");
-		else if (ret == 0)
-			RTE_LOG(INFO, VHOST_CONFIG,
-				"vhost peer closed\n");
-		else
-			RTE_LOG(ERR, VHOST_CONFIG,
-				"vhost read incorrect message\n");
-
-		vsocket->connfd = -1;
-		close(connfd);
-		*remove = 1;
-		free(conn);
-		vhost_destroy_device(vid);
-
-		if (vsocket->reconnect)
-			vhost_user_create_client(vsocket);
-
-		return;
-	}
-
-	RTE_LOG(INFO, VHOST_CONFIG, "read message %s\n",
-		vhost_message_str[msg.request]);
-	switch (msg.request) {
-	case VHOST_USER_GET_FEATURES:
-		ret = vhost_get_features(vid, &features);
-		msg.payload.u64 = features;
-		msg.size = sizeof(msg.payload.u64);
-		send_vhost_message(connfd, &msg);
-		break;
-	case VHOST_USER_SET_FEATURES:
-		features = msg.payload.u64;
-		vhost_set_features(vid, &features);
-		break;
-
-	case VHOST_USER_GET_PROTOCOL_FEATURES:
-		msg.payload.u64 = VHOST_USER_PROTOCOL_FEATURES;
-		msg.size = sizeof(msg.payload.u64);
-		send_vhost_message(connfd, &msg);
-		break;
-	case VHOST_USER_SET_PROTOCOL_FEATURES:
-		user_set_protocol_features(vid, msg.payload.u64);
-		break;
-
-	case VHOST_USER_SET_OWNER:
-		vhost_set_owner(vid);
-		break;
-	case VHOST_USER_RESET_OWNER:
-		vhost_reset_owner(vid);
-		break;
-
-	case VHOST_USER_SET_MEM_TABLE:
-		user_set_mem_table(vid, &msg);
-		break;
-
-	case VHOST_USER_SET_LOG_BASE:
-		user_set_log_base(vid, &msg);
-
-		/* it needs a reply */
-		msg.size = sizeof(msg.payload.u64);
-		send_vhost_message(connfd, &msg);
-		break;
-	case VHOST_USER_SET_LOG_FD:
-		close(msg.fds[0]);
-		RTE_LOG(INFO, VHOST_CONFIG, "not implemented.\n");
-		break;
-
-	case VHOST_USER_SET_VRING_NUM:
-		vhost_set_vring_num(vid, &msg.payload.state);
-		break;
-	case VHOST_USER_SET_VRING_ADDR:
-		vhost_set_vring_addr(vid, &msg.payload.addr);
-		break;
-	case VHOST_USER_SET_VRING_BASE:
-		vhost_set_vring_base(vid, &msg.payload.state);
-		break;
-
-	case VHOST_USER_GET_VRING_BASE:
-		ret = user_get_vring_base(vid, &msg.payload.state);
-		msg.size = sizeof(msg.payload.state);
-		send_vhost_message(connfd, &msg);
-		break;
-
-	case VHOST_USER_SET_VRING_KICK:
-		user_set_vring_kick(vid, &msg);
-		break;
-	case VHOST_USER_SET_VRING_CALL:
-		user_set_vring_call(vid, &msg);
-		break;
-
-	case VHOST_USER_SET_VRING_ERR:
-		if (!(msg.payload.u64 & VHOST_USER_VRING_NOFD_MASK))
-			close(msg.fds[0]);
-		RTE_LOG(INFO, VHOST_CONFIG, "not implemented\n");
-		break;
-
-	case VHOST_USER_GET_QUEUE_NUM:
-		msg.payload.u64 = VHOST_MAX_QUEUE_PAIRS;
-		msg.size = sizeof(msg.payload.u64);
-		send_vhost_message(connfd, &msg);
-		break;
-
-	case VHOST_USER_SET_VRING_ENABLE:
-		user_set_vring_enable(vid, &msg.payload.state);
-		break;
-	case VHOST_USER_SEND_RARP:
-		user_send_rarp(vid, &msg);
-		break;
-
-	default:
-		break;
-
-	}
-}
-
-static int
-create_unix_socket(const char *path, struct sockaddr_un *un, bool is_server)
-{
-	int fd;
-
-	fd = socket(AF_UNIX, SOCK_STREAM, 0);
-	if (fd < 0)
-		return -1;
-	RTE_LOG(INFO, VHOST_CONFIG, "vhost-user %s: socket created, fd: %d\n",
-		is_server ? "server" : "client", fd);
-
-	if (!is_server && fcntl(fd, F_SETFL, O_NONBLOCK)) {
-		RTE_LOG(ERR, VHOST_CONFIG,
-			"vhost-user: can't set nonblocking mode for socket, fd: "
-			"%d (%s)\n", fd, strerror(errno));
-		close(fd);
-		return -1;
-	}
-
-	memset(un, 0, sizeof(*un));
-	un->sun_family = AF_UNIX;
-	strncpy(un->sun_path, path, sizeof(un->sun_path));
-	un->sun_path[sizeof(un->sun_path) - 1] = '\0';
-
-	return fd;
-}
-
-static int
-vhost_user_create_server(struct vhost_user_socket *vsocket)
-{
-	int fd;
-	int ret;
-	struct sockaddr_un un;
-	const char *path = vsocket->path;
-
-	fd = create_unix_socket(path, &un, vsocket->is_server);
-	if (fd < 0)
-		return -1;
-
-	ret = bind(fd, (struct sockaddr *)&un, sizeof(un));
-	if (ret < 0) {
-		RTE_LOG(ERR, VHOST_CONFIG,
-			"failed to bind to %s: %s; remove it and try again\n",
-			path, strerror(errno));
-		goto err;
-	}
-	RTE_LOG(INFO, VHOST_CONFIG, "bind to %s\n", path);
-
-	ret = listen(fd, MAX_VIRTIO_BACKLOG);
-	if (ret < 0)
-		goto err;
-
-	vsocket->listenfd = fd;
-	ret = fdset_add(&vhost_user.fdset, fd, vhost_user_server_new_connection,
-		  NULL, vsocket);
-	if (ret < 0) {
-		RTE_LOG(ERR, VHOST_CONFIG,
-			"failed to add listen fd %d to vhost server fdset\n",
-			fd);
-		goto err;
-	}
-
-	return 0;
-
-err:
-	close(fd);
-	return -1;
-}
-
-struct vhost_user_reconnect {
-	struct sockaddr_un un;
-	int fd;
-	struct vhost_user_socket *vsocket;
-
-	TAILQ_ENTRY(vhost_user_reconnect) next;
-};
-
-TAILQ_HEAD(vhost_user_reconnect_tailq_list, vhost_user_reconnect);
-struct vhost_user_reconnect_list {
-	struct vhost_user_reconnect_tailq_list head;
-	pthread_mutex_t mutex;
-};
-
-static struct vhost_user_reconnect_list reconn_list;
-static pthread_t reconn_tid;
-
-static int
-vhost_user_connect_nonblock(int fd, struct sockaddr *un, size_t sz)
-{
-	int ret, flags;
-
-	ret = connect(fd, un, sz);
-	if (ret < 0 && errno != EISCONN)
-		return -1;
-
-	flags = fcntl(fd, F_GETFL, 0);
-	if (flags < 0) {
-		RTE_LOG(ERR, VHOST_CONFIG,
-			"can't get flags for connfd %d\n", fd);
-		return -2;
-	}
-	if ((flags & O_NONBLOCK) && fcntl(fd, F_SETFL, flags & ~O_NONBLOCK)) {
-		RTE_LOG(ERR, VHOST_CONFIG,
-				"can't disable nonblocking on fd %d\n", fd);
-		return -2;
-	}
-	return 0;
-}
-
-static void *
-vhost_user_client_reconnect(void *arg __rte_unused)
-{
-	int ret;
-	struct vhost_user_reconnect *reconn, *next;
-
-	while (1) {
-		pthread_mutex_lock(&reconn_list.mutex);
-
-		/*
-		 * An equal implementation of TAILQ_FOREACH_SAFE,
-		 * which does not exist on all platforms.
-		 */
-		for (reconn = TAILQ_FIRST(&reconn_list.head);
-		     reconn != NULL; reconn = next) {
-			next = TAILQ_NEXT(reconn, next);
-
-			ret = vhost_user_connect_nonblock(reconn->fd,
-						(struct sockaddr *)&reconn->un,
-						sizeof(reconn->un));
-			if (ret == -2) {
-				close(reconn->fd);
-				RTE_LOG(ERR, VHOST_CONFIG,
-					"reconnection for fd %d failed\n",
-					reconn->fd);
-				goto remove_fd;
-			}
-			if (ret == -1)
-				continue;
-
-			RTE_LOG(INFO, VHOST_CONFIG,
-				"%s: connected\n", reconn->vsocket->path);
-			vhost_user_add_connection(reconn->fd, reconn->vsocket);
-remove_fd:
-			TAILQ_REMOVE(&reconn_list.head, reconn, next);
-			free(reconn);
-		}
-
-		pthread_mutex_unlock(&reconn_list.mutex);
-		sleep(1);
-	}
-
-	return NULL;
-}
-
-static int
-vhost_user_reconnect_init(void)
-{
-	int ret;
-
-	pthread_mutex_init(&reconn_list.mutex, NULL);
-	TAILQ_INIT(&reconn_list.head);
-
-	ret = pthread_create(&reconn_tid, NULL,
-			     vhost_user_client_reconnect, NULL);
-	if (ret < 0)
-		RTE_LOG(ERR, VHOST_CONFIG, "failed to create reconnect thread");
-
-	return ret;
-}
-
-static int
-vhost_user_create_client(struct vhost_user_socket *vsocket)
-{
-	int fd;
-	int ret;
-	struct sockaddr_un un;
-	const char *path = vsocket->path;
-	struct vhost_user_reconnect *reconn;
-
-	fd = create_unix_socket(path, &un, vsocket->is_server);
-	if (fd < 0)
-		return -1;
-
-	ret = vhost_user_connect_nonblock(fd, (struct sockaddr *)&un,
-					  sizeof(un));
-	if (ret == 0) {
-		vhost_user_add_connection(fd, vsocket);
-		return 0;
-	}
-
-	RTE_LOG(ERR, VHOST_CONFIG,
-		"failed to connect to %s: %s\n",
-		path, strerror(errno));
-
-	if (ret == -2 || !vsocket->reconnect) {
-		close(fd);
-		return -1;
-	}
-
-	RTE_LOG(ERR, VHOST_CONFIG, "%s: reconnecting...\n", path);
-	reconn = malloc(sizeof(*reconn));
-	if (reconn == NULL) {
-		RTE_LOG(ERR, VHOST_CONFIG,
-			"failed to allocate memory for reconnect\n");
-		close(fd);
-		return -1;
-	}
-	reconn->un = un;
-	reconn->fd = fd;
-	reconn->vsocket = vsocket;
-	pthread_mutex_lock(&reconn_list.mutex);
-	TAILQ_INSERT_TAIL(&reconn_list.head, reconn, next);
-	pthread_mutex_unlock(&reconn_list.mutex);
-
-	return 0;
-}
-
-/*
- * Register a new vhost-user socket; here we could act as server
- * (the default case), or client (when RTE_VHOST_USER_CLIENT) flag
- * is set.
- */
-int
-rte_vhost_driver_register(const char *path, uint64_t flags)
-{
-	int ret = -1;
-	struct vhost_user_socket *vsocket;
-
-	if (!path)
-		return -1;
-
-	pthread_mutex_lock(&vhost_user.mutex);
-
-	if (vhost_user.vsocket_cnt == MAX_VHOST_SOCKET) {
-		RTE_LOG(ERR, VHOST_CONFIG,
-			"error: the number of vhost sockets reaches maximum\n");
-		goto out;
-	}
-
-	vsocket = malloc(sizeof(struct vhost_user_socket));
-	if (!vsocket)
-		goto out;
-	memset(vsocket, 0, sizeof(struct vhost_user_socket));
-	vsocket->path = strdup(path);
-	vsocket->connfd = -1;
-
-	if ((flags & RTE_VHOST_USER_CLIENT) != 0) {
-		vsocket->reconnect = !(flags & RTE_VHOST_USER_NO_RECONNECT);
-		if (vsocket->reconnect && reconn_tid == 0) {
-			if (vhost_user_reconnect_init() < 0) {
-				free(vsocket->path);
-				free(vsocket);
-				goto out;
-			}
-		}
-		ret = vhost_user_create_client(vsocket);
-	} else {
-		vsocket->is_server = true;
-		ret = vhost_user_create_server(vsocket);
-	}
-	if (ret < 0) {
-		free(vsocket->path);
-		free(vsocket);
-		goto out;
-	}
-
-	vhost_user.vsockets[vhost_user.vsocket_cnt++] = vsocket;
-
-out:
-	pthread_mutex_unlock(&vhost_user.mutex);
-
-	return ret;
-}
-
-static bool
-vhost_user_remove_reconnect(struct vhost_user_socket *vsocket)
-{
-	int found = false;
-	struct vhost_user_reconnect *reconn, *next;
-
-	pthread_mutex_lock(&reconn_list.mutex);
-
-	for (reconn = TAILQ_FIRST(&reconn_list.head);
-	     reconn != NULL; reconn = next) {
-		next = TAILQ_NEXT(reconn, next);
-
-		if (reconn->vsocket == vsocket) {
-			TAILQ_REMOVE(&reconn_list.head, reconn, next);
-			close(reconn->fd);
-			free(reconn);
-			found = true;
-			break;
-		}
-	}
-	pthread_mutex_unlock(&reconn_list.mutex);
-	return found;
-}
-
-/**
- * Unregister the specified vhost socket
- */
-int
-rte_vhost_driver_unregister(const char *path)
-{
-	int i;
-	int count;
-	struct vhost_user_connection *conn;
-
-	pthread_mutex_lock(&vhost_user.mutex);
-
-	for (i = 0; i < vhost_user.vsocket_cnt; i++) {
-		struct vhost_user_socket *vsocket = vhost_user.vsockets[i];
-
-		if (!strcmp(vsocket->path, path)) {
-			if (vsocket->is_server) {
-				fdset_del(&vhost_user.fdset, vsocket->listenfd);
-				close(vsocket->listenfd);
-				unlink(path);
-			} else if (vsocket->reconnect) {
-				vhost_user_remove_reconnect(vsocket);
-			}
-
-			conn = fdset_del(&vhost_user.fdset, vsocket->connfd);
-			if (conn) {
-				RTE_LOG(INFO, VHOST_CONFIG,
-					"free connfd = %d for device '%s'\n",
-					vsocket->connfd, path);
-				close(vsocket->connfd);
-				vhost_destroy_device(conn->vid);
-				free(conn);
-			}
-
-			free(vsocket->path);
-			free(vsocket);
-
-			count = --vhost_user.vsocket_cnt;
-			vhost_user.vsockets[i] = vhost_user.vsockets[count];
-			vhost_user.vsockets[count] = NULL;
-			pthread_mutex_unlock(&vhost_user.mutex);
-
-			return 0;
-		}
-	}
-	pthread_mutex_unlock(&vhost_user.mutex);
-
-	return -1;
-}
-
-int
-rte_vhost_driver_session_start(void)
-{
-	fdset_event_dispatch(&vhost_user.fdset);
-	return 0;
-}