*/
#include "qemu/osdep.h"
-#include "contrib/libvhost-user/libvhost-user.h"
+#include <iscsi/iscsi.h>
+#include <iscsi/scsi-lowlevel.h>
+#include "contrib/libvhost-user/libvhost-user-glib.h"
#include "standard-headers/linux/virtio_scsi.h"
-#include "iscsi/iscsi.h"
-#include "iscsi/scsi-lowlevel.h"
-#include <glib.h>
#define VUS_ISCSI_INITIATOR "iqn.2016-11.com.nutanix:vhost-user-scsi"
+enum {
+ VHOST_USER_SCSI_MAX_QUEUES = 8,
+};
+
typedef struct VusIscsiLun {
struct iscsi_context *iscsi_ctx;
int iscsi_lun;
} VusIscsiLun;
typedef struct VusDev {
- VuDev vu_dev;
- int server_sock;
- GMainLoop *loop;
- GHashTable *fdmap; /* fd -> gsource */
+ VugDev parent;
+
VusIscsiLun lun;
+ GMainLoop *loop;
} VusDev;
-/** glib event loop integration for libvhost-user and misc callbacks **/
-
-QEMU_BUILD_BUG_ON((int)G_IO_IN != (int)VU_WATCH_IN);
-QEMU_BUILD_BUG_ON((int)G_IO_OUT != (int)VU_WATCH_OUT);
-QEMU_BUILD_BUG_ON((int)G_IO_PRI != (int)VU_WATCH_PRI);
-QEMU_BUILD_BUG_ON((int)G_IO_ERR != (int)VU_WATCH_ERR);
-QEMU_BUILD_BUG_ON((int)G_IO_HUP != (int)VU_WATCH_HUP);
-
-typedef struct vus_gsrc {
- GSource parent;
- VusDev *vdev_scsi;
- GPollFD gfd;
-} vus_gsrc_t;
-
-static gboolean vus_gsrc_prepare(GSource *src, gint *timeout)
-{
- assert(timeout);
-
- *timeout = -1;
- return FALSE;
-}
-
-static gboolean vus_gsrc_check(GSource *src)
-{
- vus_gsrc_t *vus_src = (vus_gsrc_t *)src;
-
- assert(vus_src);
-
- return vus_src->gfd.revents & vus_src->gfd.events;
-}
-
-static gboolean vus_gsrc_dispatch(GSource *src, GSourceFunc cb, gpointer data)
-{
- VusDev *vdev_scsi;
- vus_gsrc_t *vus_src = (vus_gsrc_t *)src;
-
- assert(vus_src);
-
- vdev_scsi = vus_src->vdev_scsi;
-
- assert(vdev_scsi);
-
- ((vu_watch_cb)cb)(&vdev_scsi->vu_dev, vus_src->gfd.revents, data);
-
- return G_SOURCE_CONTINUE;
-}
-
-static GSourceFuncs vus_gsrc_funcs = {
- vus_gsrc_prepare,
- vus_gsrc_check,
- vus_gsrc_dispatch,
- NULL
-};
-
-static GSource *vus_gsrc_new(VusDev *vdev_scsi, int fd, GIOCondition cond,
- vu_watch_cb vu_cb, GSourceFunc gsrc_cb, gpointer data)
-{
- GSource *vus_gsrc;
- vus_gsrc_t *vus_src;
- guint id;
-
- assert(vdev_scsi);
- assert(fd >= 0);
- assert(vu_cb || gsrc_cb);
- assert(!(vu_cb && gsrc_cb));
-
- vus_gsrc = g_source_new(&vus_gsrc_funcs, sizeof(vus_gsrc_t));
- g_source_set_callback(vus_gsrc, (GSourceFunc) vu_cb, data, NULL);
- vus_src = (vus_gsrc_t *)vus_gsrc;
- vus_src->vdev_scsi = vdev_scsi;
- vus_src->gfd.fd = fd;
- vus_src->gfd.events = cond;
-
- g_source_add_poll(vus_gsrc, &vus_src->gfd);
- g_source_set_callback(vus_gsrc, gsrc_cb, data, NULL);
- id = g_source_attach(vus_gsrc, NULL);
- assert(id);
- g_source_unref(vus_gsrc);
-
- return vus_gsrc;
-}
-
/** libiscsi integration **/
typedef struct virtio_scsi_cmd_req VirtIOSCSICmdReq;
static void vus_panic_cb(VuDev *vu_dev, const char *buf)
{
+ VugDev *gdev;
VusDev *vdev_scsi;
assert(vu_dev);
- vdev_scsi = container_of(vu_dev, VusDev, vu_dev);
+ gdev = container_of(vu_dev, VugDev, parent);
+ vdev_scsi = container_of(gdev, VusDev, parent);
if (buf) {
g_warning("vu_panic: %s", buf);
}
g_main_loop_quit(vdev_scsi->loop);
}
-static void vus_add_watch_cb(VuDev *vu_dev, int fd, int vu_evt, vu_watch_cb cb,
- void *pvt)
-{
- GSource *src;
- VusDev *vdev_scsi;
-
- assert(vu_dev);
- assert(fd >= 0);
- assert(cb);
-
- vdev_scsi = container_of(vu_dev, VusDev, vu_dev);
- src = vus_gsrc_new(vdev_scsi, fd, vu_evt, cb, NULL, pvt);
- g_hash_table_replace(vdev_scsi->fdmap, GINT_TO_POINTER(fd), src);
-}
-
-static void vus_del_watch_cb(VuDev *vu_dev, int fd)
-{
- VusDev *vdev_scsi;
-
- assert(vu_dev);
- assert(fd >= 0);
-
- vdev_scsi = container_of(vu_dev, VusDev, vu_dev);
- g_hash_table_remove(vdev_scsi->fdmap, GINT_TO_POINTER(fd));
-}
-
static void vus_proc_req(VuDev *vu_dev, int idx)
{
+ VugDev *gdev;
VusDev *vdev_scsi;
VuVirtq *vq;
assert(vu_dev);
- vdev_scsi = container_of(vu_dev, VusDev, vu_dev);
- if (idx < 0 || idx >= VHOST_MAX_NR_VIRTQUEUE) {
- g_warning("VQ Index out of range: %d", idx);
- vus_panic_cb(vu_dev, NULL);
- return;
- }
+ gdev = container_of(vu_dev, VugDev, parent);
+ vdev_scsi = container_of(gdev, VusDev, parent);
vq = vu_get_queue(vu_dev, idx);
if (!vq) {
assert(vu_dev);
- if (idx < 0 || idx >= VHOST_MAX_NR_VIRTQUEUE) {
- g_warning("VQ Index out of range: %d", idx);
- vus_panic_cb(vu_dev, NULL);
- return;
- }
-
vq = vu_get_queue(vu_dev, idx);
if (idx == 0 || idx == 1) {
.queue_set_started = vus_queue_set_started,
};
-static gboolean vus_vhost_cb(gpointer data)
-{
- VuDev *vu_dev = (VuDev *)data;
-
- assert(vu_dev);
-
- if (!vu_dispatch(vu_dev) != 0) {
- g_warning("Error processing vhost message");
- vus_panic_cb(vu_dev, NULL);
- return G_SOURCE_REMOVE;
- }
-
- return G_SOURCE_CONTINUE;
-}
-
/** misc helpers **/
static int unix_sock_new(char *unix_fn)
/** vhost-user-scsi **/
-static void vdev_scsi_free(VusDev *vdev_scsi)
-{
- if (vdev_scsi->server_sock >= 0) {
- close(vdev_scsi->server_sock);
- }
- g_main_loop_unref(vdev_scsi->loop);
- g_hash_table_unref(vdev_scsi->fdmap);
- g_free(vdev_scsi);
-}
-
-static VusDev *vdev_scsi_new(int server_sock)
-{
- VusDev *vdev_scsi;
-
- vdev_scsi = g_new0(VusDev, 1);
- vdev_scsi->server_sock = server_sock;
- vdev_scsi->loop = g_main_loop_new(NULL, FALSE);
- vdev_scsi->fdmap =
- g_hash_table_new_full(NULL, NULL, NULL,
- (GDestroyNotify) g_source_destroy);
-
- return vdev_scsi;
-}
-
-static int vdev_scsi_run(VusDev *vdev_scsi)
-{
- int cli_sock;
- int ret = 0;
-
- assert(vdev_scsi);
- assert(vdev_scsi->server_sock >= 0);
- assert(vdev_scsi->loop);
-
- cli_sock = accept(vdev_scsi->server_sock, NULL, NULL);
- if (cli_sock < 0) {
- perror("accept");
- return -1;
- }
-
- vu_init(&vdev_scsi->vu_dev,
- cli_sock,
- vus_panic_cb,
- vus_add_watch_cb,
- vus_del_watch_cb,
- &vus_iface);
-
- vus_gsrc_new(vdev_scsi, cli_sock, G_IO_IN, NULL, vus_vhost_cb,
- &vdev_scsi->vu_dev);
-
- g_main_loop_run(vdev_scsi->loop);
-
- vu_deinit(&vdev_scsi->vu_dev);
-
- return ret;
-}
-
int main(int argc, char **argv)
{
VusDev *vdev_scsi = NULL;
char *unix_fn = NULL;
char *iscsi_uri = NULL;
- int sock, opt, err = EXIT_SUCCESS;
+ int lsock = -1, csock = -1, opt, err = EXIT_SUCCESS;
while ((opt = getopt(argc, argv, "u:i:")) != -1) {
switch (opt) {
goto help;
}
- sock = unix_sock_new(unix_fn);
- if (sock < 0) {
+ lsock = unix_sock_new(unix_fn);
+ if (lsock < 0) {
goto err;
}
- vdev_scsi = vdev_scsi_new(sock);
+
+ csock = accept(lsock, NULL, NULL);
+ if (csock < 0) {
+ perror("accept");
+ goto err;
+ }
+
+ vdev_scsi = g_new0(VusDev, 1);
+ vdev_scsi->loop = g_main_loop_new(NULL, FALSE);
if (vus_iscsi_add_lun(&vdev_scsi->lun, iscsi_uri) != 0) {
goto err;
}
- if (vdev_scsi_run(vdev_scsi) != 0) {
+ if (!vug_init(&vdev_scsi->parent, VHOST_USER_SCSI_MAX_QUEUES, csock,
+ vus_panic_cb, &vus_iface)) {
+ g_printerr("Failed to initialize libvhost-user-glib\n");
goto err;
}
+ g_main_loop_run(vdev_scsi->loop);
+
+ vug_deinit(&vdev_scsi->parent);
+
out:
if (vdev_scsi) {
- vdev_scsi_free(vdev_scsi);
+ g_main_loop_unref(vdev_scsi->loop);
+ g_free(vdev_scsi);
unlink(unix_fn);
}
+ if (csock >= 0) {
+ close(csock);
+ }
+ if (lsock >= 0) {
+ close(lsock);
+ }
g_free(unix_fn);
g_free(iscsi_uri);
projects / mirror_qemu.git / blobdiff