*
*/
-#define EXPORT_SYMTAB
-
#define DEBUG_SUBSYSTEM S_RPC
-
+#ifdef __KERNEL__
+#include <linux/obd_support.h>
+#include <linux/obd_class.h>
#include <linux/lustre_net.h>
+#else
+#include <liblustre.h>
+#endif
+
+#include "ptlrpc_internal.h"
static spinlock_t conn_lock;
static struct list_head conn_list;
static struct list_head conn_unused_list;
-struct ptlrpc_connection *ptlrpc_get_connection(struct lustre_peer *peer)
+void ptlrpc_dump_connections(void)
+{
+ char str[PTL_NALFMT_SIZE];
+ struct list_head *tmp;
+ struct ptlrpc_connection *c;
+ ENTRY;
+
+ list_for_each(tmp, &conn_list) {
+ c = list_entry(tmp, struct ptlrpc_connection, c_link);
+ CERROR("Connection %p/%s has refcount %d (nid=%s on %s)\n",
+ c, c->c_remote_uuid.uuid, atomic_read(&c->c_refcount),
+ ptlrpc_peernid2str(&c->c_peer, str),
+ c->c_peer.peer_ni->pni_name);
+ }
+ EXIT;
+}
+
+struct ptlrpc_connection *ptlrpc_get_connection(struct ptlrpc_peer *peer,
+ struct obd_uuid *uuid)
{
+ char str[PTL_NALFMT_SIZE];
struct list_head *tmp, *pos;
struct ptlrpc_connection *c;
ENTRY;
+
+ CDEBUG(D_INFO, "peer is %s on %s\n",
+ ptlrpc_peernid2str(peer, str), peer->peer_ni->pni_name);
+
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) {
- atomic_inc(&c->c_refcount);
+ if (peer->peer_nid == c->c_peer.peer_nid &&
+ peer->peer_ni == c->c_peer.peer_ni) {
+ ptlrpc_connection_addref(c);
GOTO(out, c);
}
}
list_for_each_safe(tmp, pos, &conn_unused_list) {
c = list_entry(tmp, struct ptlrpc_connection, c_link);
- if (memcmp(peer, &c->c_peer, sizeof(*peer)) == 0) {
- atomic_inc(&c->c_refcount);
+ if (peer->peer_nid == c->c_peer.peer_nid &&
+ peer->peer_ni == c->c_peer.peer_ni) {
+ ptlrpc_connection_addref(c);
list_del(&c->c_link);
list_add(&c->c_link, &conn_list);
GOTO(out, c);
/* FIXME: this should be a slab once we can validate slab addresses
* without OOPSing */
- OBD_ALLOC(c, sizeof(*c));
+ OBD_ALLOC_GFP(c, sizeof(*c), GFP_ATOMIC);
+
if (c == NULL)
GOTO(out, c);
- c->c_xid_in = 1;
- c->c_xid_out = 1;
- c->c_generation = 1;
- c->c_epoch = 1;
- c->c_bootcount = 0;
- atomic_set(&c->c_refcount, 1);
- spin_lock_init(&c->c_lock);
-
+ if (uuid && uuid->uuid) /* XXX ???? */
+ obd_str2uuid(&c->c_remote_uuid, uuid->uuid);
+ atomic_set(&c->c_refcount, 0);
memcpy(&c->c_peer, peer, sizeof(c->c_peer));
+
+ ptlrpc_connection_addref(c);
+
list_add(&c->c_link, &conn_list);
EXIT;
int ptlrpc_put_connection(struct ptlrpc_connection *c)
{
+ char str[PTL_NALFMT_SIZE];
int rc = 0;
+ ENTRY;
+
+ if (c == NULL) {
+ CERROR("NULL connection\n");
+ RETURN(0);
+ }
+
+ CDEBUG (D_INFO, "connection=%p refcount %d to %s on %s\n",
+ c, atomic_read(&c->c_refcount) - 1,
+ ptlrpc_peernid2str(&c->c_peer, str),
+ c->c_peer.peer_ni->pni_name);
if (atomic_dec_and_test(&c->c_refcount)) {
spin_lock(&conn_lock);
spin_unlock(&conn_lock);
rc = 1;
}
+ if (atomic_read(&c->c_refcount) < 0)
+ CERROR("connection %p refcount %d!\n",
+ c, atomic_read(&c->c_refcount));
- return rc;
+ RETURN(rc);
}
struct ptlrpc_connection *ptlrpc_connection_addref(struct ptlrpc_connection *c)
{
+ char str[PTL_NALFMT_SIZE];
+ ENTRY;
atomic_inc(&c->c_refcount);
- return c;
+ CDEBUG (D_INFO, "connection=%p refcount %d to %s on %s\n",
+ c, atomic_read(&c->c_refcount),
+ ptlrpc_peernid2str(&c->c_peer, str),
+ c->c_peer.peer_ni->pni_name);
+ RETURN(c);
}
void ptlrpc_init_connection(void)
void ptlrpc_cleanup_connection(void)
{
+ char str[PTL_NALFMT_SIZE];
struct list_head *tmp, *pos;
struct ptlrpc_connection *c;
}
list_for_each_safe(tmp, pos, &conn_list) {
c = list_entry(tmp, struct ptlrpc_connection, c_link);
- CERROR("Connection %p has refcount %d at cleanup (nid=%lu)!\n",
- c, atomic_read(&c->c_refcount),
- (unsigned long)c->c_peer.peer_nid);
+ CERROR("Connection %p/%s has refcount %d (nid=%s on %s)\n",
+ c, c->c_remote_uuid.uuid, atomic_read(&c->c_refcount),
+ ptlrpc_peernid2str(&c->c_peer, str),
+ c->c_peer.peer_ni->pni_name);
list_del(&c->c_link);
OBD_FREE(c, sizeof(*c));
}