/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=8:tabstop=8:
*
- * Copyright (C) 2001, 2002 Cluster File Systems, Inc.
- * Author: Zach Brown <zab@zabbo.net>
- * Author: Peter J. Braam <braam@clusterfs.com>
- * Author: Phil Schwan <phil@clusterfs.com>
- * Author: Eric Barton <eric@bartonsoftware.com>
+ * GPL HEADER START
*
- * This file is part of Portals, http://www.sf.net/projects/sandiaportals/
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * Portals 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.
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
*
- * Portals 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.
+ * This program 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 version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
*
- * You should have received a copy of the GNU General Public License
- * along with Portals; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * 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.
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Use is subject to license terms.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ *
+ * lnet/klnds/socklnd/socklnd.c
+ *
+ * Author: Zach Brown <zab@zabbo.net>
+ * Author: Peter J. Braam <braam@clusterfs.com>
+ * Author: Phil Schwan <phil@clusterfs.com>
+ * Author: Eric Barton <eric@bartonsoftware.com>
*/
#include "socklnd.h"
if (net->ksnn_shutdown) {
spin_unlock_bh (&net->ksnn_lock);
-
+
LIBCFS_FREE(peer, sizeof(*peer));
CERROR("Can't create peer: network shutdown\n");
return -ESHUTDOWN;
{
ksock_net_t *net = peer->ksnp_ni->ni_data;
- CDEBUG (D_NET, "peer %s %p deleted\n",
+ CDEBUG (D_NET, "peer %s %p deleted\n",
libcfs_id2str(peer->ksnp_id), peer);
LASSERT (atomic_read (&peer->ksnp_refcount) == 0);
continue;
CDEBUG(D_NET, "got peer [%p] -> %s (%d)\n",
- peer, libcfs_id2str(id),
+ peer, libcfs_id2str(id),
atomic_read(&peer->ksnp_refcount));
return (peer);
}
{
int i;
__u32 ip;
+ ksock_interface_t *iface;
for (i = 0; i < peer->ksnp_n_passive_ips; i++) {
LASSERT (i < LNET_MAX_INTERFACES);
ip = peer->ksnp_passive_ips[i];
- ksocknal_ip2iface(peer->ksnp_ni, ip)->ksni_npeers--;
+ iface = ksocknal_ip2iface(peer->ksnp_ni, ip);
+ /* All IPs in peer->ksnp_passive_ips[] come from the
+ * interface list, therefore the call must succeed. */
+ LASSERT (iface != NULL);
+
+ CDEBUG(D_NET, "peer=%p iface=%p ksni_nroutes=%d\n",
+ peer, iface, iface->ksni_nroutes);
+ iface->ksni_npeers--;
}
LASSERT (list_empty(&peer->ksnp_conns));
}
int
-ksocknal_get_peer_info (lnet_ni_t *ni, int index,
+ksocknal_get_peer_info (lnet_ni_t *ni, int index,
lnet_process_id_t *id, __u32 *myip, __u32 *peer_ip, int *port,
int *conn_count, int *share_count)
{
if (route2->ksnr_ipaddr == route->ksnr_ipaddr) {
CERROR ("Duplicate route %s %u.%u.%u.%u\n",
- libcfs_id2str(peer->ksnp_id),
+ libcfs_id2str(peer->ksnp_id),
HIPQUAD(route->ksnr_ipaddr));
LBUG();
}
read_unlock (&ksocknal_data.ksnd_global_lock);
return 0;
}
-
+
for (i = 0; i < nip; i++) {
ipaddrs[i] = net->ksnn_interfaces[i].ksni_ipaddr;
LASSERT (ipaddrs[i] != 0);
write_unlock_bh (global_lock);
return;
}
-
+
LASSERT (npeer_ipaddrs <= LNET_MAX_INTERFACES);
for (i = 0; i < npeer_ipaddrs; i++) {
list_add_tail(&cr->ksncr_list, &ksocknal_data.ksnd_connd_connreqs);
cfs_waitq_signal(&ksocknal_data.ksnd_connd_waitq);
-
+
spin_unlock_bh (&ksocknal_data.ksnd_connd_lock);
return 0;
}
int
-ksocknal_connecting (ksock_peer_t *peer, __u32 ipaddr)
+ksocknal_connecting (ksock_peer_t *peer, __u32 ipaddr)
{
ksock_route_t *route;
-
+
list_for_each_entry (route, &peer->ksnp_routes, ksnr_list) {
if (route->ksnr_ipaddr == ipaddr)
}
int
-ksocknal_create_conn (lnet_ni_t *ni, ksock_route_t *route,
+ksocknal_create_conn (lnet_ni_t *ni, ksock_route_t *route,
cfs_socket_t *sock, int type)
{
rwlock_t *global_lock = &ksocknal_data.ksnd_global_lock;
conn->ksnc_peer = NULL;
conn->ksnc_route = NULL;
conn->ksnc_sock = sock;
- atomic_set (&conn->ksnc_sock_refcount, 1); /* 1 ref for conn */
+ /* 2 ref, 1 for conn, another extra ref prevents socket
+ * being closed before establishment of connection */
+ atomic_set (&conn->ksnc_sock_refcount, 2);
conn->ksnc_type = type;
ksocknal_lib_save_callback(sock, conn);
atomic_set (&conn->ksnc_conn_refcount, 1); /* 1 ref for me */
write_lock_bh(global_lock);
conn->ksnc_proto = peer->ksnp_proto;
write_unlock_bh(global_lock);
-
+
if (conn->ksnc_proto == NULL) {
conn->ksnc_proto = &ksocknal_protocol_v2x;
#if SOCKNAL_VERSION_DEBUG
/* +1 ref for me */
ksocknal_peer_addref(peer);
peer->ksnp_accepting++;
-
+
/* Am I already connecting to this guy? Resolve in
* favour of higher NID... */
if (peerid.nid < ni->ni_nid &&
goto failed_2;
}
- if (peer->ksnp_proto == NULL) {
+ if (peer->ksnp_proto == NULL) {
/* Never connected before.
* NB recv_hello may have returned EPROTO to signal my peer
* wants a different protocol than the one I asked for.
*/
LASSERT (list_empty(&peer->ksnp_conns));
-
+
peer->ksnp_proto = conn->ksnc_proto;
peer->ksnp_incarnation = incarnation;
}
peer->ksnp_proto = NULL;
rc = ESTALE;
- warn = peer->ksnp_incarnation != incarnation ?
+ warn = peer->ksnp_incarnation != incarnation ?
"peer rebooted" :
"wrong proto version";
goto failed_2;
hello->kshm_nips);
rc = ksocknal_send_hello(ni, conn, peerid.nid, hello);
}
-
+
LIBCFS_FREE(hello, offsetof(ksock_hello_msg_t,
kshm_ips[LNET_MAX_INTERFACES]));
ksocknal_connsock_decref(conn);
}
+ ksocknal_connsock_decref(conn);
ksocknal_conn_decref(conn);
return rc;
list_del_init(&peer->ksnp_tx_queue);
ksocknal_unlink_peer_locked(peer);
}
-
+
write_unlock_bh (global_lock);
if (warn != NULL) {
peer->ksnp_accepting--;
write_unlock_bh(global_lock);
}
-
+
ksocknal_txlist_done(ni, &zombies, 1);
ksocknal_peer_decref(peer);
/* There has been a connection failure or comms error; but I'll only
* tell LNET I think the peer is dead if it's to another kernel and
* there are no connections or connection attempts in existance. */
-
+
read_lock (&ksocknal_data.ksnd_global_lock);
if ((peer->ksnp_id.pid & LNET_PID_USERFLAG) == 0 &&
cfs_duration_sec(cfs_time_current() -
peer->ksnp_last_alive);
}
-
+
read_unlock (&ksocknal_data.ksnd_global_lock);
if (notify)
}
void
+ksocknal_finalize_zcreq(ksock_conn_t *conn)
+{
+ ksock_peer_t *peer = conn->ksnc_peer;
+ ksock_tx_t *tx;
+ ksock_tx_t *tmp;
+ CFS_LIST_HEAD (zlist);
+
+ /* NB safe to finalize TXs because closing of socket will
+ * abort all buffered data */
+ LASSERT (conn->ksnc_sock == NULL);
+
+ spin_lock(&peer->ksnp_lock);
+
+ list_for_each_entry_safe(tx, tmp, &peer->ksnp_zc_req_list, tx_zc_list) {
+ if (tx->tx_conn != conn)
+ continue;
+
+ LASSERT (tx->tx_msg.ksm_zc_req_cookie != 0);
+
+ tx->tx_msg.ksm_zc_req_cookie = 0;
+ list_del(&tx->tx_zc_list);
+ list_add(&tx->tx_zc_list, &zlist);
+ }
+
+ spin_unlock(&peer->ksnp_lock);
+
+ while (!list_empty(&zlist)) {
+ tx = list_entry(zlist.next, ksock_tx_t, tx_zc_list);
+
+ list_del(&tx->tx_zc_list);
+ ksocknal_tx_decref(tx);
+ }
+}
+
+void
ksocknal_terminate_conn (ksock_conn_t *conn)
{
/* This gets called by the reaper (guaranteed thread context) to
ksock_peer_t *peer = conn->ksnc_peer;
ksock_sched_t *sched = conn->ksnc_scheduler;
int failed = 0;
- struct list_head *tmp;
- struct list_head *nxt;
- ksock_tx_t *tx;
- LIST_HEAD (zlist);
LASSERT(conn->ksnc_closing);
/* wake up the scheduler to "send" all remaining packets to /dev/null */
spin_lock_bh (&sched->kss_lock);
+ /* a closing conn is always ready to tx */
+ conn->ksnc_tx_ready = 1;
+
if (!conn->ksnc_tx_scheduled &&
!list_empty(&conn->ksnc_tx_queue)){
list_add_tail (&conn->ksnc_tx_list,
&sched->kss_tx_conns);
- /* a closing conn is always ready to tx */
- conn->ksnc_tx_ready = 1;
conn->ksnc_tx_scheduled = 1;
/* extra ref for scheduler */
ksocknal_conn_addref(conn);
spin_unlock_bh (&sched->kss_lock);
- spin_lock(&peer->ksnp_lock);
-
- list_for_each_safe(tmp, nxt, &peer->ksnp_zc_req_list) {
- tx = list_entry(tmp, ksock_tx_t, tx_zc_list);
-
- if (tx->tx_conn != conn)
- continue;
-
- LASSERT (tx->tx_msg.ksm_zc_req_cookie != 0);
-
- tx->tx_msg.ksm_zc_req_cookie = 0;
- list_del(&tx->tx_zc_list);
- list_add(&tx->tx_zc_list, &zlist);
- }
-
- spin_unlock(&peer->ksnp_lock);
-
- list_for_each_safe(tmp, nxt, &zlist) {
- tx = list_entry(tmp, ksock_tx_t, tx_zc_list);
-
- list_del(&tx->tx_zc_list);
- ksocknal_tx_decref(tx);
- }
-
/* serialise with callbacks */
write_lock_bh (&ksocknal_data.ksnd_global_lock);
list_add_tail(&conn->ksnc_list, &ksocknal_data.ksnd_zombie_conns);
cfs_waitq_signal(&ksocknal_data.ksnd_reaper_waitq);
-
+
spin_unlock_bh (&ksocknal_data.ksnd_reaper_lock);
}
", ip %d.%d.%d.%d:%d, with error\n",
libcfs_id2str(conn->ksnc_peer->ksnp_id),
HIPQUAD(conn->ksnc_ipaddr), conn->ksnc_port);
- lnet_finalize (conn->ksnc_peer->ksnp_ni,
+ lnet_finalize (conn->ksnc_peer->ksnp_ni,
conn->ksnc_cookie, -EIO);
break;
case SOCKNAL_RX_LNET_HEADER:
* gateway state.... */
lnet_process_id_t id = {.nid = gw_nid, .pid = LNET_PID_ANY};
- CDEBUG (D_NET, "gw %s %s\n", libcfs_nid2str(gw_nid),
+ CDEBUG (D_NET, "gw %s %s\n", libcfs_nid2str(gw_nid),
alive ? "up" : "down");
if (!alive) {
data->ioc_u32[1]); /* net mask */
case IOC_LIBCFS_DEL_INTERFACE:
- return ksocknal_del_interface(ni,
+ return ksocknal_del_interface(ni,
data->ioc_u32[0]); /* IP address */
case IOC_LIBCFS_GET_PEER: {
&conn_count, &share_count);
if (rc != 0)
return rc;
-
+
data->ioc_nid = id.nid;
data->ioc_count = share_count;
data->ioc_u32[0] = ip;
}
case IOC_LIBCFS_REGISTER_MYNID:
/* Ignore if this is a noop */
- if (data->ioc_nid == ni->ni_nid)
- return 0;
+ if (data->ioc_nid == ni->ni_nid)
+ return 0;
- CERROR("obsolete IOC_LIBCFS_REGISTER_MYNID: %s(%s)\n",
- libcfs_nid2str(data->ioc_nid),
- libcfs_nid2str(ni->ni_nid));
- return -EINVAL;
+ CERROR("obsolete IOC_LIBCFS_REGISTER_MYNID: %s(%s)\n",
+ libcfs_nid2str(data->ioc_nid),
+ libcfs_nid2str(ni->ni_nid));
+ return -EINVAL;
case IOC_LIBCFS_PUSH_CONNECTION: {
lnet_process_id_t id = {.nid = data->ioc_nid,
.pid = LNET_PID_ANY};
-
+
return ksocknal_push(ni, id);
}
default:
* connecting */
if (*ksocknal_tunables.ksnd_nconnds < 2)
*ksocknal_tunables.ksnd_nconnds = 2;
-
+
for (i = 0; i < *ksocknal_tunables.ksnd_nconnds; i++) {
rc = ksocknal_thread_start (ksocknal_connd, (void *)((long)i));
if (rc != 0) {
}
LIBCFS_FREE(net, sizeof(*net));
-
+
ksocknal_data.ksnd_nnets--;
if (ksocknal_data.ksnd_nnets == 0)
ksocknal_base_shutdown();
int j;
int rc;
int n;
-
+
n = libcfs_ipif_enumerate(&names);
if (n <= 0) {
CERROR("Can't enumerate interfaces: %d\n", n);
names[i], rc);
continue;
}
-
+
if (!up) {
CWARN("Ignoring interface %s (down)\n",
names[i]);
}
libcfs_ipif_free_enumeration(names, n);
-
+
if (j == 0)
CERROR("Can't find any usable interfaces\n");
-
+
return j;
}
if (rc != 0)
return rc;
}
-
+
LIBCFS_ALLOC(net, sizeof(*net));
if (net == NULL)
goto fail_0;
-
+
memset(net, 0, sizeof(*net));
spin_lock_init(&net->ksnn_lock);
net->ksnn_incarnation = ksocknal_new_incarnation();
ni->ni_data = net;
ni->ni_maxtxcredits = *ksocknal_tunables.ksnd_credits;
ni->ni_peertxcredits = *ksocknal_tunables.ksnd_peercredits;
-
+
if (ni->ni_interfaces[0] == NULL) {
rc = ksocknal_enumerate_interfaces(net);
if (rc <= 0)
ni->ni_interfaces[i], &up,
&net->ksnn_interfaces[i].ksni_ipaddr,
&net->ksnn_interfaces[i].ksni_netmask);
-
+
if (rc != 0) {
CERROR("Can't get interface %s info: %d\n",
ni->ni_interfaces[i], rc);
goto fail_1;
}
-
+
if (!up) {
CERROR("Interface %s is down\n",
ni->ni_interfaces[i]);
ksocknal_data.ksnd_nnets++;
return 0;
-
+
fail_1:
LIBCFS_FREE(net, sizeof(*net));
fail_0:
/* check ksnr_connected/connecting field large enough */
CLASSERT(SOCKLND_CONN_NTYPES <= 4);
-
+
rc = ksocknal_lib_tunables_init();
if (rc != 0)
return rc;
return 0;
}
-MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
+MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
MODULE_DESCRIPTION("Kernel TCP Socket LND v2.0.0");
MODULE_LICENSE("GPL");
git://git.whamcloud.com / fs / lustre-release.git / blobdiff