* This function works as the action for both primary and secondary process * for static vdev discovery when a secondary process is booting. * * step 1, secondary process sends a sync request to ask for vdev in primary; * step 2, primary process receives the request, and send vdevs one by one; * step 3, primary process sends back reply, which indicates how many vdevs * are sent. */
| 406 | * are sent. |
| 407 | */ |
| 408 | static int |
| 409 | vdev_action(const struct rte_mp_msg *mp_msg, const void *peer) |
| 410 | { |
| 411 | struct rte_vdev_device *dev; |
| 412 | struct rte_mp_msg mp_resp; |
| 413 | struct vdev_param *ou = (struct vdev_param *)&mp_resp.param; |
| 414 | const struct vdev_param *in = (const struct vdev_param *)mp_msg->param; |
| 415 | const char *devname; |
| 416 | int num; |
| 417 | int ret; |
| 418 | |
| 419 | strlcpy(mp_resp.name, VDEV_MP_KEY, sizeof(mp_resp.name)); |
| 420 | mp_resp.len_param = sizeof(*ou); |
| 421 | mp_resp.num_fds = 0; |
| 422 | |
| 423 | switch (in->type) { |
| 424 | case VDEV_SCAN_REQ: |
| 425 | ou->type = VDEV_SCAN_ONE; |
| 426 | ou->num = 1; |
| 427 | num = 0; |
| 428 | |
| 429 | rte_spinlock_recursive_lock(&vdev_device_list_lock); |
| 430 | TAILQ_FOREACH(dev, &vdev_device_list, next) { |
| 431 | devname = rte_vdev_device_name(dev); |
| 432 | if (strlen(devname) == 0) { |
| 433 | VDEV_LOG(INFO, "vdev with no name is not sent"); |
| 434 | continue; |
| 435 | } |
| 436 | VDEV_LOG(INFO, "send vdev, %s", devname); |
| 437 | strlcpy(ou->name, devname, RTE_DEV_NAME_MAX_LEN); |
| 438 | if (rte_mp_sendmsg(&mp_resp) < 0) |
| 439 | VDEV_LOG(ERR, "send vdev, %s, failed, %s", |
| 440 | devname, strerror(rte_errno)); |
| 441 | num++; |
| 442 | } |
| 443 | rte_spinlock_recursive_unlock(&vdev_device_list_lock); |
| 444 | |
| 445 | ou->type = VDEV_SCAN_REP; |
| 446 | ou->num = num; |
| 447 | if (rte_mp_reply(&mp_resp, peer) < 0) |
| 448 | VDEV_LOG(ERR, "Failed to reply a scan request"); |
| 449 | break; |
| 450 | case VDEV_SCAN_ONE: |
| 451 | VDEV_LOG(INFO, "receive vdev, %s", in->name); |
| 452 | ret = insert_vdev(in->name, NULL, NULL, false); |
| 453 | if (ret == -EEXIST) |
| 454 | VDEV_LOG(DEBUG, "device already exist, %s", in->name); |
| 455 | else if (ret < 0) |
| 456 | VDEV_LOG(ERR, "failed to add vdev, %s", in->name); |
| 457 | break; |
| 458 | default: |
| 459 | VDEV_LOG(ERR, "vdev cannot recognize this message"); |
| 460 | } |
| 461 | |
| 462 | return 0; |
| 463 | } |
| 464 | |
| 465 | static int |
nothing calls this directly
no test coverage detected