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;
}
// Attach a VIF to a vrf
struct vif* vif_add(char* name, uint8_t* ip, uint8_t mask, uint8_t* macaddr,
uint32_t label, char* path, int cpus, int cpusets[])
{
int i;
struct vif* vif = (struct vif*) malloc (sizeof(struct vif));
if (!vif) {
log_crit("Failed to allocated memory for vif struct (%s)\n", name);
return NULL;
}
strcpy(vif->name, name);
vif->label = label;
vif->mask = mask;
memcpy(vif->ip, ip, 4);
memcpy(vif->macaddr, macaddr, 4);
strcpy(vif->path, path);
rte_atomic64_clear(&vif->rx_packets);
rte_atomic64_clear(&vif->tx_packets);
rte_atomic64_clear(&vif->dropped_packets);
rte_atomic64_clear(&vif->error_packets);
vif->cpus = cpus;
for (i = 0; i < cpus; i++) {
CPU_ZERO(&vif->cpusets[i]);
CPU_SET(cpusets[i], &vif->cpusets[i]);
}
vif->lldev = NULL;
// Add route to this VM in VRF/RIB.
vif->nh.data = vif;
vif->nh.fn = virtio_tx_packet;
ipv4_route_add(label, ip, &vif->nh);
/* Create VHOST-User socket */
unlink(vif->path);
if (rte_vhost_driver_register(vif->path) < 0) {
free(vif);
return NULL;
}
return vif;
}
