// Called from CGO code.
int dpdk_init(void)
{
int i;
engine_start_notify = (sem_t*)
malloc(sizeof(sem_t) * sysconf (_SC_NPROCESSORS_CONF));
for (i = 0; i < sysconf (_SC_NPROCESSORS_CONF); i++)
sem_init(&engine_start_notify[i], 0, 0);
// Call dpdk_main from a thread
pthread_create(&engine_thread, NULL, dpdk_init_worker, NULL);
// Wait till all cores are in engine loop
for (i = 0; i < sysconf (_SC_NPROCESSORS_CONF); i++)
sem_wait(&engine_start_notify[i]);
// Initialize the lock for virtio net linked list
pthread_mutex_init(&ll_virtio_net_lock, NULL);
// Initialize virtio framework
if (rte_vhost_driver_callback_register(&virtio_ops) < 0) {
log_crit( "rte_vhost_driver_callback_register failed\n");
return -1;
}
// Run vhost-user listener
if (pthread_create(&vhost_thread, NULL, vhost_worker, NULL) < 0) {
log_crit( "Failed to create cmd thread\n");
return -1;
}
log_info( "VHOST Socket is up and running!\n");
return 0;
}
static struct vhost_scsi_ctrlr *
vhost_scsi_ctrlr_construct(const char *ctrlr_name)
{
int ret;
struct vhost_scsi_ctrlr *ctrlr;
char *path;
char cwd[PATH_MAX];
/* always use current directory */
path = getcwd(cwd, PATH_MAX);
if (!path) {
fprintf(stderr, "Cannot get current working directory\n");
return NULL;
}
snprintf(dev_pathname, sizeof(dev_pathname), "%s/%s", path, ctrlr_name);
if (access(dev_pathname, F_OK) != -1) {
if (unlink(dev_pathname) != 0)
rte_exit(EXIT_FAILURE, "Cannot remove %s.\n",
dev_pathname);
}
if (rte_vhost_driver_register(dev_pathname, 0) != 0) {
fprintf(stderr, "socket %s already exists\n", dev_pathname);
return NULL;
}
fprintf(stdout, "socket file: %s created\n", dev_pathname);
ret = rte_vhost_driver_set_features(dev_pathname, VIRTIO_SCSI_FEATURES);
if (ret != 0) {
fprintf(stderr, "Set vhost driver features failed\n");
return NULL;
}
ctrlr = rte_zmalloc(NULL, sizeof(*ctrlr), RTE_CACHE_LINE_SIZE);
if (!ctrlr)
return NULL;
rte_vhost_driver_callback_register(dev_pathname,
&vhost_scsi_device_ops);
return ctrlr;
}
