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authorYuanhan Liu <yuanhan.liu@linux.intel.com>2016-05-07 04:13:22 +0800
committerYuanhan Liu <yuanhan.liu@linux.intel.com>2016-06-22 09:44:21 +0200
commit9ebcd4f9c74ed5d873932be0e29590b9a13e48c7 (patch)
tree5e216a0d507b616ce9cedf1bb28224d96b8be369 /lib/librte_vhost
parent7fd5dde987cf1ffa709516a405ff4e7db13053fa (diff)
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vhost: rename structs for enabling client mode
DPDK vhost-user just acts as server so far, so, using a struct named as "vhost_server" is okay. However, if we add client mode, it doesn't make sense any more. Here renames it to "vhost_user_socket". There was no obvious wrong about "connfd_ctx", but I think it's obviously better to rename it to "vhost_user_connection", as it does represent a connection, a connection between the backend (DPDK) and the frontend (QEMU). Similarly, few more renames are taken, such as "vserver_new_vq_conn" to "vhost_user_new_connection". Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Diffstat (limited to 'lib/librte_vhost')
-rw-r--r--lib/librte_vhost/vhost_user/vhost-net-user.c131
-rw-r--r--lib/librte_vhost/vhost_user/vhost-net-user.h6
2 files changed, 70 insertions, 67 deletions
diff --git a/lib/librte_vhost/vhost_user/vhost-net-user.c b/lib/librte_vhost/vhost_user/vhost-net-user.c
index 68fc9b9..f485a3b 100644
--- a/lib/librte_vhost/vhost_user/vhost-net-user.c
+++ b/lib/librte_vhost/vhost_user/vhost-net-user.c
@@ -51,32 +51,41 @@
#include "vhost-net.h"
#include "virtio-net-user.h"
-#define MAX_VIRTIO_BACKLOG 128
-
-static void vserver_new_vq_conn(int fd, void *data, int *remove);
-static void vserver_message_handler(int fd, void *dat, int *remove);
+/*
+ * 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;
+};
-struct connfd_ctx {
- struct vhost_server *vserver;
+struct vhost_user_connection {
+ struct vhost_user_socket *vsocket;
int vid;
};
-#define MAX_VHOST_SERVER 1024
-struct _vhost_server {
- struct vhost_server *server[MAX_VHOST_SERVER];
+#define MAX_VHOST_SOCKET 1024
+struct vhost_user {
+ struct vhost_user_socket *vsockets[MAX_VHOST_SOCKET];
struct fdset fdset;
- int vserver_cnt;
- pthread_mutex_t server_mutex;
+ int vsocket_cnt;
+ pthread_mutex_t mutex;
};
-static struct _vhost_server g_vhost_server = {
+#define MAX_VIRTIO_BACKLOG 128
+
+static void vhost_user_new_connection(int fd, void *data, int *remove);
+static void vhost_user_msg_handler(int fd, void *dat, int *remove);
+
+static struct vhost_user vhost_user = {
.fdset = {
.fd = { [0 ... MAX_FDS - 1] = {-1, NULL, NULL, NULL, 0} },
.fd_mutex = PTHREAD_MUTEX_INITIALIZER,
.num = 0
},
- .vserver_cnt = 0,
- .server_mutex = PTHREAD_MUTEX_INITIALIZER,
+ .vsocket_cnt = 0,
+ .mutex = PTHREAD_MUTEX_INITIALIZER,
};
static const char *vhost_message_str[VHOST_USER_MAX] = {
@@ -278,13 +287,13 @@ send_vhost_message(int sockfd, struct VhostUserMsg *msg)
return ret;
}
-/* call back when there is new virtio connection. */
+/* call back when there is new vhost-user connection. */
static void
-vserver_new_vq_conn(int fd, void *dat, __rte_unused int *remove)
+vhost_user_new_connection(int fd, void *dat, int *remove __rte_unused)
{
- struct vhost_server *vserver = (struct vhost_server *)dat;
+ struct vhost_user_socket *vsocket = dat;
int conn_fd;
- struct connfd_ctx *ctx;
+ struct vhost_user_connection *conn;
int vid;
unsigned int size;
@@ -294,41 +303,41 @@ vserver_new_vq_conn(int fd, void *dat, __rte_unused int *remove)
if (conn_fd < 0)
return;
- ctx = calloc(1, sizeof(*ctx));
- if (ctx == NULL) {
+ conn = calloc(1, sizeof(*conn));
+ if (conn == NULL) {
close(conn_fd);
return;
}
vid = vhost_new_device();
if (vid == -1) {
- free(ctx);
+ free(conn);
close(conn_fd);
return;
}
- size = strnlen(vserver->path, PATH_MAX);
- vhost_set_ifname(vid, vserver->path, size);
+ 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);
- ctx->vserver = vserver;
- ctx->vid = vid;
- fdset_add(&g_vhost_server.fdset,
- conn_fd, vserver_message_handler, NULL, ctx);
+ conn->vsocket = vsocket;
+ conn->vid = vid;
+ fdset_add(&vhost_user.fdset,
+ conn_fd, vhost_user_msg_handler, NULL, conn);
}
/* callback when there is message on the connfd */
static void
-vserver_message_handler(int connfd, void *dat, int *remove)
+vhost_user_msg_handler(int connfd, void *dat, int *remove)
{
int vid;
- struct connfd_ctx *cfd_ctx = (struct connfd_ctx *)dat;
+ struct vhost_user_connection *conn = dat;
struct VhostUserMsg msg;
uint64_t features;
int ret;
- vid = cfd_ctx->vid;
+ vid = conn->vid;
ret = read_vhost_message(connfd, &msg);
if (ret <= 0 || msg.request >= VHOST_USER_MAX) {
if (ret < 0)
@@ -343,7 +352,7 @@ vserver_message_handler(int connfd, void *dat, int *remove)
close(connfd);
*remove = 1;
- free(cfd_ctx);
+ free(conn);
vhost_destroy_device(vid);
return;
@@ -449,37 +458,37 @@ vserver_message_handler(int connfd, void *dat, int *remove)
int
rte_vhost_driver_register(const char *path)
{
- struct vhost_server *vserver;
+ struct vhost_user_socket *vsocket;
- pthread_mutex_lock(&g_vhost_server.server_mutex);
+ pthread_mutex_lock(&vhost_user.mutex);
- if (g_vhost_server.vserver_cnt == MAX_VHOST_SERVER) {
+ if (vhost_user.vsocket_cnt == MAX_VHOST_SOCKET) {
RTE_LOG(ERR, VHOST_CONFIG,
"error: the number of servers reaches maximum\n");
- pthread_mutex_unlock(&g_vhost_server.server_mutex);
+ pthread_mutex_unlock(&vhost_user.mutex);
return -1;
}
- vserver = calloc(sizeof(struct vhost_server), 1);
- if (vserver == NULL) {
- pthread_mutex_unlock(&g_vhost_server.server_mutex);
+ vsocket = calloc(sizeof(struct vhost_user_socket), 1);
+ if (vsocket == NULL) {
+ pthread_mutex_unlock(&vhost_user.mutex);
return -1;
}
- vserver->listenfd = uds_socket(path);
- if (vserver->listenfd < 0) {
- free(vserver);
- pthread_mutex_unlock(&g_vhost_server.server_mutex);
+ vsocket->listenfd = uds_socket(path);
+ if (vsocket->listenfd < 0) {
+ free(vsocket);
+ pthread_mutex_unlock(&vhost_user.mutex);
return -1;
}
- vserver->path = strdup(path);
+ vsocket->path = strdup(path);
- fdset_add(&g_vhost_server.fdset, vserver->listenfd,
- vserver_new_vq_conn, NULL, vserver);
+ fdset_add(&vhost_user.fdset, vsocket->listenfd,
+ vhost_user_new_connection, NULL, vsocket);
- g_vhost_server.server[g_vhost_server.vserver_cnt++] = vserver;
- pthread_mutex_unlock(&g_vhost_server.server_mutex);
+ vhost_user.vsockets[vhost_user.vsocket_cnt++] = vsocket;
+ pthread_mutex_unlock(&vhost_user.mutex);
return 0;
}
@@ -494,28 +503,28 @@ rte_vhost_driver_unregister(const char *path)
int i;
int count;
- pthread_mutex_lock(&g_vhost_server.server_mutex);
+ pthread_mutex_lock(&vhost_user.mutex);
- for (i = 0; i < g_vhost_server.vserver_cnt; i++) {
- if (!strcmp(g_vhost_server.server[i]->path, path)) {
- fdset_del(&g_vhost_server.fdset,
- g_vhost_server.server[i]->listenfd);
+ for (i = 0; i < vhost_user.vsocket_cnt; i++) {
+ if (!strcmp(vhost_user.vsockets[i]->path, path)) {
+ fdset_del(&vhost_user.fdset,
+ vhost_user.vsockets[i]->listenfd);
- close(g_vhost_server.server[i]->listenfd);
- free(g_vhost_server.server[i]->path);
- free(g_vhost_server.server[i]);
+ close(vhost_user.vsockets[i]->listenfd);
+ free(vhost_user.vsockets[i]->path);
+ free(vhost_user.vsockets[i]);
unlink(path);
- count = --g_vhost_server.vserver_cnt;
- g_vhost_server.server[i] = g_vhost_server.server[count];
- g_vhost_server.server[count] = NULL;
- pthread_mutex_unlock(&g_vhost_server.server_mutex);
+ 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(&g_vhost_server.server_mutex);
+ pthread_mutex_unlock(&vhost_user.mutex);
return -1;
}
@@ -523,6 +532,6 @@ rte_vhost_driver_unregister(const char *path)
int
rte_vhost_driver_session_start(void)
{
- fdset_event_dispatch(&g_vhost_server.fdset);
+ fdset_event_dispatch(&vhost_user.fdset);
return 0;
}
diff --git a/lib/librte_vhost/vhost_user/vhost-net-user.h b/lib/librte_vhost/vhost_user/vhost-net-user.h
index ec68b96..f533239 100644
--- a/lib/librte_vhost/vhost_user/vhost-net-user.h
+++ b/lib/librte_vhost/vhost_user/vhost-net-user.h
@@ -38,12 +38,6 @@
#include <linux/vhost.h>
#include "rte_virtio_net.h"
-#include "fd_man.h"
-
-struct vhost_server {
- char *path; /**< The path the uds is bind to. */
- int listenfd; /**< The listener sockfd. */
-};
/* refer to hw/virtio/vhost-user.c */