*
* Copyright (C) 2002 Cluster File Systems, Inc.
*
- * This file is part of Lustre, http://www.lustre.org.
+ * This file is part of the Lustre file system, http://www.lustre.org
+ * Lustre is a trademark of Cluster File Systems, Inc.
*
- * Lustre is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
+ * You may have signed or agreed to another license before downloading
+ * this software. If so, you are bound by the terms and conditions
+ * of that agreement, and the following does not apply to you. See the
+ * LICENSE file included with this distribution for more information.
*
- * Lustre is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * If you did not agree to a different license, then this copy of Lustre
+ * is open source software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
*
- * You should have received a copy of the GNU General Public License
- * along with Lustre; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * In either case, Lustre is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * license text for more details.
*
*/
#define DEBUG_SUBSYSTEM S_RPC
+#ifdef __KERNEL__
+#include <obd_support.h>
+#include <obd_class.h>
+#include <lustre_net.h>
+#else
+#include <liblustre.h>
+#endif
-#include <linux/obd_support.h>
-#include <linux/obd_class.h>
-#include <linux/lustre_net.h>
+#include "ptlrpc_internal.h"
static spinlock_t conn_lock;
static struct list_head conn_list;
static struct list_head conn_unused_list;
-/* If UUID is NULL, c->c_remote_uuid must be all zeroes
- * If UUID is non-NULL, c->c_remote_uuid must match. */
-static int match_connection_uuid(struct ptlrpc_connection *c, struct obd_uuid *uuid)
+void ptlrpc_dump_connections(void)
{
- struct obd_uuid zero_uuid;
- memset(&zero_uuid, 0, sizeof(zero_uuid));
-
- if (uuid)
- return memcmp(c->c_remote_uuid.uuid, uuid->uuid,
- sizeof(uuid->uuid));
+ struct list_head *tmp;
+ struct ptlrpc_connection *c;
+ ENTRY;
- return memcmp(c->c_remote_uuid.uuid, &zero_uuid, sizeof(zero_uuid));
+ list_for_each(tmp, &conn_list) {
+ c = list_entry(tmp, struct ptlrpc_connection, c_link);
+ CERROR("Connection %p/%s has refcount %d (nid=%s->%s)\n",
+ c, c->c_remote_uuid.uuid, atomic_read(&c->c_refcount),
+ libcfs_nid2str(c->c_self),
+ libcfs_nid2str(c->c_peer.nid));
+ }
+ EXIT;
}
-struct ptlrpc_connection *ptlrpc_get_connection(struct lustre_peer *peer,
- struct obd_uuid *uuid)
+struct ptlrpc_connection*
+ptlrpc_lookup_conn_locked (lnet_process_id_t peer)
{
- struct list_head *tmp, *pos;
struct ptlrpc_connection *c;
- ENTRY;
-
- CDEBUG(D_INFO, "peer is %08x %08lx %08lx\n",
- peer->peer_nid, peer->peer_ni.nal_idx, peer->peer_ni.handle_idx);
+ struct list_head *tmp;
- spin_lock(&conn_lock);
list_for_each(tmp, &conn_list) {
c = list_entry(tmp, struct ptlrpc_connection, c_link);
- if (memcmp(peer, &c->c_peer, sizeof(*peer)) == 0 &&
- !match_connection_uuid(c, uuid)) {
- ptlrpc_connection_addref(c);
- GOTO(out, c);
- }
+
+ if (peer.nid == c->c_peer.nid &&
+ peer.pid == c->c_peer.pid)
+ return ptlrpc_connection_addref(c);
}
- list_for_each_safe(tmp, pos, &conn_unused_list) {
+ list_for_each(tmp, &conn_unused_list) {
c = list_entry(tmp, struct ptlrpc_connection, c_link);
- if (memcmp(peer, &c->c_peer, sizeof(*peer)) == 0 &&
- !match_connection_uuid(c, uuid)) {
- ptlrpc_connection_addref(c);
+
+ if (peer.nid == c->c_peer.nid &&
+ peer.pid == c->c_peer.pid) {
list_del(&c->c_link);
list_add(&c->c_link, &conn_list);
- GOTO(out, c);
+ return ptlrpc_connection_addref(c);
}
}
- /* FIXME: this should be a slab once we can validate slab addresses
- * without OOPSing */
+ return NULL;
+}
+
+
+struct ptlrpc_connection *ptlrpc_get_connection(lnet_process_id_t peer,
+ lnet_nid_t self, struct obd_uuid *uuid)
+{
+ struct ptlrpc_connection *c;
+ struct ptlrpc_connection *c2;
+ ENTRY;
+
+ CDEBUG(D_INFO, "self %s peer %s\n",
+ libcfs_nid2str(self), libcfs_id2str(peer));
+
+ spin_lock(&conn_lock);
+
+ c = ptlrpc_lookup_conn_locked(peer);
+
+ spin_unlock(&conn_lock);
+
+ if (c != NULL)
+ RETURN (c);
+
OBD_ALLOC(c, sizeof(*c));
if (c == NULL)
- GOTO(out, c);
+ RETURN (NULL);
- c->c_generation = 1;
- c->c_epoch = 1;
- c->c_bootcount = 0;
- c->c_flags = 0;
- if (uuid->uuid)
+ atomic_set(&c->c_refcount, 1);
+ c->c_peer = peer;
+ c->c_self = self;
+ if (uuid != NULL)
obd_str2uuid(&c->c_remote_uuid, uuid->uuid);
- INIT_LIST_HEAD(&c->c_imports);
- INIT_LIST_HEAD(&c->c_exports);
- INIT_LIST_HEAD(&c->c_sb_chain);
- INIT_LIST_HEAD(&c->c_recovd_data.rd_managed_chain);
- INIT_LIST_HEAD(&c->c_delayed_head);
- atomic_set(&c->c_refcount, 0);
- ptlrpc_connection_addref(c);
- spin_lock_init(&c->c_lock);
-
- memcpy(&c->c_peer, peer, sizeof(c->c_peer));
- list_add(&c->c_link, &conn_list);
- EXIT;
- out:
+ spin_lock(&conn_lock);
+
+ c2 = ptlrpc_lookup_conn_locked(peer);
+ if (c2 == NULL)
+ list_add(&c->c_link, &conn_list);
+
spin_unlock(&conn_lock);
- return c;
+
+ if (c2 == NULL)
+ RETURN (c);
+
+ OBD_FREE(c, sizeof(*c));
+ RETURN (c2);
}
int ptlrpc_put_connection(struct ptlrpc_connection *c)
{
int rc = 0;
+ lnet_process_id_t peer;
ENTRY;
if (c == NULL) {
RETURN(0);
}
- CDEBUG(D_INFO, "connection=%p refcount %d\n",
- c, atomic_read(&c->c_refcount) - 1);
+ peer = c->c_peer;
+
+ CDEBUG (D_INFO, "connection=%p refcount %d to %s\n",
+ c, atomic_read(&c->c_refcount) - 1,
+ libcfs_nid2str(c->c_peer.nid));
+
if (atomic_dec_and_test(&c->c_refcount)) {
- recovd_conn_unmanage(c);
spin_lock(&conn_lock);
list_del(&c->c_link);
list_add(&c->c_link, &conn_unused_list);
struct ptlrpc_connection *ptlrpc_connection_addref(struct ptlrpc_connection *c)
{
ENTRY;
- CDEBUG(D_INFO, "connection=%p refcount %d\n",
- c, atomic_read(&c->c_refcount) + 1);
atomic_inc(&c->c_refcount);
+ CDEBUG (D_INFO, "connection=%p refcount %d to %s\n",
+ c, atomic_read(&c->c_refcount),
+ libcfs_nid2str(c->c_peer.nid));
RETURN(c);
}
void ptlrpc_init_connection(void)
{
- INIT_LIST_HEAD(&conn_list);
- INIT_LIST_HEAD(&conn_unused_list);
- conn_lock = SPIN_LOCK_UNLOCKED;
+ CFS_INIT_LIST_HEAD(&conn_list);
+ CFS_INIT_LIST_HEAD(&conn_unused_list);
+ spin_lock_init(&conn_lock);
}
void ptlrpc_cleanup_connection(void)
}
list_for_each_safe(tmp, pos, &conn_list) {
c = list_entry(tmp, struct ptlrpc_connection, c_link);
- CERROR("Connection %p/%s has refcount %d (nid=%lu)\n",
+ CERROR("Connection %p/%s has refcount %d (nid=%s)\n",
c, c->c_remote_uuid.uuid, atomic_read(&c->c_refcount),
- (unsigned long)c->c_peer.peer_nid);
+ libcfs_nid2str(c->c_peer.nid));
list_del(&c->c_link);
OBD_FREE(c, sizeof(*c));
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff