- CFS_LIST_HEAD(deathrow);
- struct uuid_nid_data *data;
-
- cfs_spin_lock(&g_uuid_lock);
- if (uuid != NULL) {
- struct obd_uuid tmp;
-
- obd_str2uuid(&tmp, uuid);
- cfs_list_for_each_entry(data, &g_uuid_list, un_list) {
- if (obd_uuid_equals(&data->un_uuid, &tmp)) {
- cfs_list_move(&data->un_list, &deathrow);
- break;
- }
- }
- } else
- cfs_list_splice_init(&g_uuid_list, &deathrow);
- cfs_spin_unlock(&g_uuid_lock);
-
- if (uuid != NULL && cfs_list_empty(&deathrow)) {
- CDEBUG(D_INFO, "Try to delete a non-existent uuid %s\n", uuid);
- return -EINVAL;
- }
-
- while (!cfs_list_empty(&deathrow)) {
- data = cfs_list_entry(deathrow.next, struct uuid_nid_data,
- un_list);
- cfs_list_del(&data->un_list);
-
- CDEBUG(D_INFO, "del uuid %s %s/%d\n",
- obd_uuid2str(&data->un_uuid),
- libcfs_nid2str(data->un_nids[0]),
- data->un_nid_count);
-
- OBD_FREE(data, sizeof(*data));
- }
-
- return 0;
+ struct uuid_nid_data *data;
+ LIST_HEAD(deathrow);
+
+ spin_lock(&g_uuid_lock);
+ if (uuid != NULL) {
+ struct obd_uuid tmp;
+
+ obd_str2uuid(&tmp, uuid);
+ list_for_each_entry(data, &g_uuid_list, un_list) {
+ if (obd_uuid_equals(&data->un_uuid, &tmp)) {
+ list_move(&data->un_list, &deathrow);
+ break;
+ }
+ }
+ } else
+ list_splice_init(&g_uuid_list, &deathrow);
+ spin_unlock(&g_uuid_lock);
+
+ if (uuid != NULL && list_empty(&deathrow)) {
+ CDEBUG(D_INFO, "Try to delete a non-existent uuid %s\n", uuid);
+ return -EINVAL;
+ }
+
+ while ((data = list_first_entry_or_null(&deathrow, struct uuid_nid_data,
+ un_list)) != NULL) {
+ list_del(&data->un_list);
+
+ CDEBUG(D_INFO, "del uuid %s %s/%d\n",
+ obd_uuid2str(&data->un_uuid),
+ libcfs_nid2str(data->un_nids[0]),
+ data->un_nid_count);
+
+ OBD_FREE(data, sizeof(*data));
+ }
+ return 0;
+}
+
+int class_add_nids_to_uuid(struct obd_uuid *uuid, lnet_nid_t *nids,
+ int nid_count)
+{
+ struct uuid_nid_data *entry;
+ int i, rc;
+ bool matched = false;
+
+ ENTRY;
+
+ if (nid_count >= MTI_NIDS_MAX) {
+ CDEBUG(D_NET, "too many NIDs (%d) for UUID '%s'\n",
+ nid_count, obd_uuid2str(uuid));
+ return -ENOSPC;
+ }
+
+ spin_lock(&g_uuid_lock);
+ list_for_each_entry(entry, &g_uuid_list, un_list) {
+ CDEBUG(D_NET, "Comparing %s with %s\n",
+ obd_uuid2str(uuid), obd_uuid2str(&entry->un_uuid));
+
+ if (!obd_uuid_equals(&entry->un_uuid, uuid))
+ continue;
+
+ matched = true;
+ CDEBUG(D_NET, "Updating UUID '%s'\n", obd_uuid2str(uuid));
+ for (i = 0; i < nid_count; i++)
+ entry->un_nids[i] = nids[i];
+ entry->un_nid_count = nid_count;
+ break;
+ }
+ spin_unlock(&g_uuid_lock);
+ if (matched) {
+ rc = LNetAddPeer(entry->un_nids, entry->un_nid_count);
+ CDEBUG(D_INFO, "Add peer %s rc = %d\n",
+ libcfs_nid2str(entry->un_nids[0]), rc);
+ }
+
+ RETURN(0);