diff options
author | Marc-André Lureau <marcandre.lureau@redhat.com> | 2017-08-17 21:04:56 +0200 |
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committer | Marc-André Lureau <marcandre.lureau@redhat.com> | 2017-10-10 23:31:09 +0200 |
commit | 62ddfba03452beff05dffe40abc44e8b10429d58 (patch) | |
tree | 89cc8d5a2a7ca56e39e1c8d50be1bb89dcc0bb01 | |
parent | 8bb7ddb78a1c68f2408a66a61c748330903fd5f2 (diff) |
vhost-user-scsi: use libvhost-user glib helper
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
-rw-r--r-- | contrib/vhost-user-scsi/vhost-user-scsi.c | 162 |
1 files changed, 16 insertions, 146 deletions
diff --git a/contrib/vhost-user-scsi/vhost-user-scsi.c b/contrib/vhost-user-scsi/vhost-user-scsi.c index ff817d6643..615e2a76bb 100644 --- a/contrib/vhost-user-scsi/vhost-user-scsi.c +++ b/contrib/vhost-user-scsi/vhost-user-scsi.c @@ -11,7 +11,7 @@ */ #include "qemu/osdep.h" -#include "contrib/libvhost-user/libvhost-user.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" @@ -26,95 +26,13 @@ typedef struct VusIscsiLun { } VusIscsiLun; typedef struct VusDev { - VuDev vu_dev; + VugDev parent; + int server_sock; - GMainLoop *loop; - GHashTable *fdmap; /* fd -> gsource */ 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; @@ -291,11 +209,13 @@ static int handle_cmd_sync(struct iscsi_context *ctx, 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); } @@ -303,40 +223,16 @@ static void vus_panic_cb(VuDev *vu_dev, const char *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); + gdev = container_of(vu_dev, VugDev, parent); + vdev_scsi = container_of(gdev, VusDev, parent); if (idx < 0 || idx >= VHOST_MAX_NR_VIRTQUEUE) { g_warning("VQ Index out of range: %d", idx); vus_panic_cb(vu_dev, NULL); @@ -420,21 +316,6 @@ static const VuDevIface vus_iface = { .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) @@ -482,7 +363,6 @@ static void vdev_scsi_free(VusDev *vdev_scsi) close(vdev_scsi->server_sock); } g_main_loop_unref(vdev_scsi->loop); - g_hash_table_unref(vdev_scsi->fdmap); g_free(vdev_scsi); } @@ -493,9 +373,6 @@ static VusDev *vdev_scsi_new(int server_sock) 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; } @@ -503,11 +380,9 @@ static VusDev *vdev_scsi_new(int server_sock) 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) { @@ -515,21 +390,16 @@ static int vdev_scsi_run(VusDev *vdev_scsi) 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); + vug_init(&vdev_scsi->parent, + cli_sock, + vus_panic_cb, + &vus_iface); g_main_loop_run(vdev_scsi->loop); - vu_deinit(&vdev_scsi->vu_dev); + vug_deinit(&vdev_scsi->parent); - return ret; + return 0; } int main(int argc, char **argv) |