-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
/*
* Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#define DEBUG_SUBSYSTEM S_RPC
-#ifndef __KERNEL__
-# include <liblustre.h>
-#endif
#include <obd.h>
#include <obd_support.h>
#include <obd_class.h>
#define NIDS_MAX 32
struct uuid_nid_data {
- cfs_list_t un_list;
- struct obd_uuid un_uuid;
- int un_nid_count;
- lnet_nid_t un_nids[NIDS_MAX];
+ struct list_head un_list;
+ struct obd_uuid un_uuid;
+ int un_nid_count;
+ lnet_nid_t un_nids[NIDS_MAX];
};
/* FIXME: This should probably become more elegant than a global linked list */
-static cfs_list_t g_uuid_list;
-static cfs_spinlock_t g_uuid_lock;
-
-void class_init_uuidlist(void)
-{
- CFS_INIT_LIST_HEAD(&g_uuid_list);
- cfs_spin_lock_init(&g_uuid_lock);
-}
-
-void class_exit_uuidlist(void)
-{
- /* delete all */
- class_del_uuid(NULL);
-}
+static LIST_HEAD(g_uuid_list);
+static DEFINE_SPINLOCK(g_uuid_lock);
int lustre_uuid_to_peer(const char *uuid, lnet_nid_t *peer_nid, int index)
{
- struct uuid_nid_data *data;
- struct obd_uuid tmp;
- int rc = -ENOENT;
-
- obd_str2uuid(&tmp, uuid);
- cfs_spin_lock(&g_uuid_lock);
- cfs_list_for_each_entry(data, &g_uuid_list, un_list) {
- if (obd_uuid_equals(&data->un_uuid, &tmp)) {
- if (index >= data->un_nid_count)
- break;
-
- rc = 0;
- *peer_nid = data->un_nids[index];
- break;
- }
- }
- cfs_spin_unlock(&g_uuid_lock);
- return rc;
+ struct uuid_nid_data *data;
+ struct obd_uuid tmp;
+ int rc = -ENOENT;
+
+ obd_str2uuid(&tmp, uuid);
+ spin_lock(&g_uuid_lock);
+ list_for_each_entry(data, &g_uuid_list, un_list) {
+ if (obd_uuid_equals(&data->un_uuid, &tmp)) {
+ if (index >= data->un_nid_count)
+ break;
+
+ rc = 0;
+ *peer_nid = data->un_nids[index];
+ break;
+ }
+ }
+ spin_unlock(&g_uuid_lock);
+ return rc;
}
+EXPORT_SYMBOL(lustre_uuid_to_peer);
/* Add a nid to a niduuid. Multiple nids can be added to a single uuid;
LNET will choose the best one. */
int class_add_uuid(const char *uuid, __u64 nid)
{
- struct uuid_nid_data *data, *entry;
- int found = 0;
-
- LASSERT(nid != 0); /* valid newconfig NID is never zero */
-
- if (strlen(uuid) > UUID_MAX - 1)
- return -EOVERFLOW;
-
- OBD_ALLOC_PTR(data);
- if (data == NULL)
- return -ENOMEM;
-
- obd_str2uuid(&data->un_uuid, uuid);
- data->un_nids[0] = nid;
- data->un_nid_count = 1;
-
- cfs_spin_lock(&g_uuid_lock);
- cfs_list_for_each_entry(entry, &g_uuid_list, un_list) {
- if (obd_uuid_equals(&entry->un_uuid, &data->un_uuid)) {
- int i;
-
- found = 1;
- for (i = 0; i < data->un_nid_count; i++)
- if (nid == entry->un_nids[i])
- break;
-
- if (i == data->un_nid_count) {
- LASSERT(data->un_nid_count < NIDS_MAX);
- data->un_nids[++data->un_nid_count] = nid;
- break;
- }
- }
- }
- if (!found)
- cfs_list_add(&data->un_list, &g_uuid_list);
- cfs_spin_unlock(&g_uuid_lock);
-
- if (found) {
- CDEBUG(D_INFO, "found uuid %s %s cnt=%d\n", uuid,
- libcfs_nid2str(nid), entry->un_nid_count);
- OBD_FREE(data, sizeof(*data));
- } else {
- CDEBUG(D_INFO, "add uuid %s %s\n", uuid, libcfs_nid2str(nid));
- }
- return 0;
+ struct uuid_nid_data *data, *entry;
+ int found = 0;
+
+ LASSERT(nid != 0); /* valid newconfig NID is never zero */
+
+ if (strlen(uuid) > UUID_MAX - 1)
+ return -EOVERFLOW;
+
+ OBD_ALLOC_PTR(data);
+ if (data == NULL)
+ return -ENOMEM;
+
+ obd_str2uuid(&data->un_uuid, uuid);
+ data->un_nids[0] = nid;
+ data->un_nid_count = 1;
+
+ spin_lock(&g_uuid_lock);
+ list_for_each_entry(entry, &g_uuid_list, un_list) {
+ if (obd_uuid_equals(&entry->un_uuid, &data->un_uuid)) {
+ int i;
+
+ found = 1;
+ for (i = 0; i < entry->un_nid_count; i++)
+ if (nid == entry->un_nids[i])
+ break;
+
+ if (i == entry->un_nid_count) {
+ LASSERT(entry->un_nid_count < NIDS_MAX);
+ entry->un_nids[entry->un_nid_count++] = nid;
+ }
+ break;
+ }
+ }
+ if (!found)
+ list_add(&data->un_list, &g_uuid_list);
+ spin_unlock(&g_uuid_lock);
+
+ if (found) {
+ CDEBUG(D_INFO, "found uuid %s %s cnt=%d\n", uuid,
+ libcfs_nid2str(nid), entry->un_nid_count);
+ OBD_FREE(data, sizeof(*data));
+ } else {
+ CDEBUG(D_INFO, "add uuid %s %s\n", uuid, libcfs_nid2str(nid));
+ }
+ return 0;
}
/* Delete the nids for one uuid if specified, otherwise delete all */
int class_del_uuid(const char *uuid)
{
- 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 (!list_empty(&deathrow)) {
+ data = list_entry(deathrow.next, struct uuid_nid_data,
+ un_list);
+ 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;
}
/* check if @nid exists in nid list of @uuid */
int class_check_uuid(struct obd_uuid *uuid, __u64 nid)
{
- struct uuid_nid_data *entry;
- int found = 0;
- ENTRY;
+ struct uuid_nid_data *entry;
+ int found = 0;
+
+ ENTRY;
- CDEBUG(D_INFO, "check if uuid %s has %s.\n",
- obd_uuid2str(uuid), libcfs_nid2str(nid));
+ CDEBUG(D_INFO, "check if uuid %s has %s.\n",
+ obd_uuid2str(uuid), libcfs_nid2str(nid));
- cfs_spin_lock(&g_uuid_lock);
- cfs_list_for_each_entry(entry, &g_uuid_list, un_list) {
- int i;
+ spin_lock(&g_uuid_lock);
+ list_for_each_entry(entry, &g_uuid_list, un_list) {
+ int i;
- if (!obd_uuid_equals(&entry->un_uuid, uuid))
+ if (!obd_uuid_equals(&entry->un_uuid, uuid))
continue;
- /* found the uuid, check if it has @nid */
- for (i = 0; i < entry->un_nid_count; i++) {
- if (entry->un_nids[i] == nid) {
- found = 1;
- break;
- }
- }
- }
- cfs_spin_unlock (&g_uuid_lock);
- RETURN(found);
+ /* found the uuid, check if it has @nid */
+ for (i = 0; i < entry->un_nid_count; i++) {
+ if (entry->un_nids[i] == nid) {
+ found = 1;
+ break;
+ }
+ }
+ break;
+ }
+ spin_unlock(&g_uuid_lock);
+ RETURN(found);
}
EXPORT_SYMBOL(class_check_uuid);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff