2307 lines
53 KiB
C
2307 lines
53 KiB
C
/*
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* GPL HEADER START
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*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 only,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License version 2 for more details (a copy is included
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* in the LICENSE file that accompanied this code).
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*
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* You should have received a copy of the GNU General Public License
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* version 2 along with this program; If not, see
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* http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*
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* GPL HEADER END
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*/
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/*
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* Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
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* Use is subject to license terms.
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*
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* Copyright (c) 2011, 2015, Intel Corporation.
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*/
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/*
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* This file is part of Lustre, http://www.lustre.org/
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* Lustre is a trademark of Sun Microsystems, Inc.
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*/
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#define DEBUG_SUBSYSTEM S_LNET
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#include <linux/log2.h>
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#include <linux/ktime.h>
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#include "../../include/linux/lnet/lib-lnet.h"
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#include "../../include/linux/lnet/lib-dlc.h"
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#define D_LNI D_CONSOLE
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lnet_t the_lnet; /* THE state of the network */
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EXPORT_SYMBOL(the_lnet);
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static char *ip2nets = "";
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module_param(ip2nets, charp, 0444);
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MODULE_PARM_DESC(ip2nets, "LNET network <- IP table");
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static char *networks = "";
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module_param(networks, charp, 0444);
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MODULE_PARM_DESC(networks, "local networks");
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static char *routes = "";
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module_param(routes, charp, 0444);
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MODULE_PARM_DESC(routes, "routes to non-local networks");
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static int rnet_htable_size = LNET_REMOTE_NETS_HASH_DEFAULT;
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module_param(rnet_htable_size, int, 0444);
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MODULE_PARM_DESC(rnet_htable_size, "size of remote network hash table");
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static int lnet_ping(lnet_process_id_t id, int timeout_ms,
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lnet_process_id_t __user *ids, int n_ids);
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static char *
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lnet_get_routes(void)
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{
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return routes;
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}
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static char *
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lnet_get_networks(void)
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{
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char *nets;
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int rc;
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if (*networks && *ip2nets) {
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LCONSOLE_ERROR_MSG(0x101, "Please specify EITHER 'networks' or 'ip2nets' but not both at once\n");
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return NULL;
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}
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if (*ip2nets) {
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rc = lnet_parse_ip2nets(&nets, ip2nets);
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return !rc ? nets : NULL;
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}
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if (*networks)
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return networks;
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return "tcp";
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}
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static void
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lnet_init_locks(void)
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{
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spin_lock_init(&the_lnet.ln_eq_wait_lock);
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init_waitqueue_head(&the_lnet.ln_eq_waitq);
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init_waitqueue_head(&the_lnet.ln_rc_waitq);
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mutex_init(&the_lnet.ln_lnd_mutex);
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mutex_init(&the_lnet.ln_api_mutex);
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}
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static int
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lnet_create_remote_nets_table(void)
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{
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int i;
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struct list_head *hash;
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LASSERT(!the_lnet.ln_remote_nets_hash);
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LASSERT(the_lnet.ln_remote_nets_hbits > 0);
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LIBCFS_ALLOC(hash, LNET_REMOTE_NETS_HASH_SIZE * sizeof(*hash));
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if (!hash) {
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CERROR("Failed to create remote nets hash table\n");
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return -ENOMEM;
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}
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for (i = 0; i < LNET_REMOTE_NETS_HASH_SIZE; i++)
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INIT_LIST_HEAD(&hash[i]);
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the_lnet.ln_remote_nets_hash = hash;
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return 0;
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}
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static void
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lnet_destroy_remote_nets_table(void)
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{
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int i;
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if (!the_lnet.ln_remote_nets_hash)
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return;
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for (i = 0; i < LNET_REMOTE_NETS_HASH_SIZE; i++)
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LASSERT(list_empty(&the_lnet.ln_remote_nets_hash[i]));
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LIBCFS_FREE(the_lnet.ln_remote_nets_hash,
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LNET_REMOTE_NETS_HASH_SIZE *
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sizeof(the_lnet.ln_remote_nets_hash[0]));
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the_lnet.ln_remote_nets_hash = NULL;
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}
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static void
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lnet_destroy_locks(void)
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{
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if (the_lnet.ln_res_lock) {
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cfs_percpt_lock_free(the_lnet.ln_res_lock);
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the_lnet.ln_res_lock = NULL;
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}
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if (the_lnet.ln_net_lock) {
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cfs_percpt_lock_free(the_lnet.ln_net_lock);
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the_lnet.ln_net_lock = NULL;
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}
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}
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static int
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lnet_create_locks(void)
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{
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lnet_init_locks();
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the_lnet.ln_res_lock = cfs_percpt_lock_alloc(lnet_cpt_table());
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if (!the_lnet.ln_res_lock)
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goto failed;
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the_lnet.ln_net_lock = cfs_percpt_lock_alloc(lnet_cpt_table());
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if (!the_lnet.ln_net_lock)
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goto failed;
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return 0;
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failed:
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lnet_destroy_locks();
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return -ENOMEM;
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}
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static void lnet_assert_wire_constants(void)
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{
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/*
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* Wire protocol assertions generated by 'wirecheck'
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* running on Linux robert.bartonsoftware.com 2.6.8-1.521
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* #1 Mon Aug 16 09:01:18 EDT 2004 i686 athlon i386 GNU/Linux
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* with gcc version 3.3.3 20040412 (Red Hat Linux 3.3.3-7)
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*/
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/* Constants... */
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CLASSERT(LNET_PROTO_TCP_MAGIC == 0xeebc0ded);
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CLASSERT(LNET_PROTO_TCP_VERSION_MAJOR == 1);
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CLASSERT(LNET_PROTO_TCP_VERSION_MINOR == 0);
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CLASSERT(LNET_MSG_ACK == 0);
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CLASSERT(LNET_MSG_PUT == 1);
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CLASSERT(LNET_MSG_GET == 2);
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CLASSERT(LNET_MSG_REPLY == 3);
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CLASSERT(LNET_MSG_HELLO == 4);
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/* Checks for struct ptl_handle_wire_t */
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CLASSERT((int)sizeof(lnet_handle_wire_t) == 16);
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CLASSERT((int)offsetof(lnet_handle_wire_t, wh_interface_cookie) == 0);
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CLASSERT((int)sizeof(((lnet_handle_wire_t *)0)->wh_interface_cookie) == 8);
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CLASSERT((int)offsetof(lnet_handle_wire_t, wh_object_cookie) == 8);
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CLASSERT((int)sizeof(((lnet_handle_wire_t *)0)->wh_object_cookie) == 8);
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/* Checks for struct lnet_magicversion_t */
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CLASSERT((int)sizeof(lnet_magicversion_t) == 8);
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CLASSERT((int)offsetof(lnet_magicversion_t, magic) == 0);
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CLASSERT((int)sizeof(((lnet_magicversion_t *)0)->magic) == 4);
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CLASSERT((int)offsetof(lnet_magicversion_t, version_major) == 4);
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CLASSERT((int)sizeof(((lnet_magicversion_t *)0)->version_major) == 2);
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CLASSERT((int)offsetof(lnet_magicversion_t, version_minor) == 6);
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CLASSERT((int)sizeof(((lnet_magicversion_t *)0)->version_minor) == 2);
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/* Checks for struct lnet_hdr_t */
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CLASSERT((int)sizeof(lnet_hdr_t) == 72);
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CLASSERT((int)offsetof(lnet_hdr_t, dest_nid) == 0);
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CLASSERT((int)sizeof(((lnet_hdr_t *)0)->dest_nid) == 8);
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CLASSERT((int)offsetof(lnet_hdr_t, src_nid) == 8);
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CLASSERT((int)sizeof(((lnet_hdr_t *)0)->src_nid) == 8);
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CLASSERT((int)offsetof(lnet_hdr_t, dest_pid) == 16);
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CLASSERT((int)sizeof(((lnet_hdr_t *)0)->dest_pid) == 4);
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CLASSERT((int)offsetof(lnet_hdr_t, src_pid) == 20);
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CLASSERT((int)sizeof(((lnet_hdr_t *)0)->src_pid) == 4);
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CLASSERT((int)offsetof(lnet_hdr_t, type) == 24);
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CLASSERT((int)sizeof(((lnet_hdr_t *)0)->type) == 4);
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CLASSERT((int)offsetof(lnet_hdr_t, payload_length) == 28);
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CLASSERT((int)sizeof(((lnet_hdr_t *)0)->payload_length) == 4);
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CLASSERT((int)offsetof(lnet_hdr_t, msg) == 32);
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CLASSERT((int)sizeof(((lnet_hdr_t *)0)->msg) == 40);
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/* Ack */
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CLASSERT((int)offsetof(lnet_hdr_t, msg.ack.dst_wmd) == 32);
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CLASSERT((int)sizeof(((lnet_hdr_t *)0)->msg.ack.dst_wmd) == 16);
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CLASSERT((int)offsetof(lnet_hdr_t, msg.ack.match_bits) == 48);
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CLASSERT((int)sizeof(((lnet_hdr_t *)0)->msg.ack.match_bits) == 8);
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CLASSERT((int)offsetof(lnet_hdr_t, msg.ack.mlength) == 56);
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CLASSERT((int)sizeof(((lnet_hdr_t *)0)->msg.ack.mlength) == 4);
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/* Put */
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CLASSERT((int)offsetof(lnet_hdr_t, msg.put.ack_wmd) == 32);
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CLASSERT((int)sizeof(((lnet_hdr_t *)0)->msg.put.ack_wmd) == 16);
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CLASSERT((int)offsetof(lnet_hdr_t, msg.put.match_bits) == 48);
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CLASSERT((int)sizeof(((lnet_hdr_t *)0)->msg.put.match_bits) == 8);
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CLASSERT((int)offsetof(lnet_hdr_t, msg.put.hdr_data) == 56);
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CLASSERT((int)sizeof(((lnet_hdr_t *)0)->msg.put.hdr_data) == 8);
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CLASSERT((int)offsetof(lnet_hdr_t, msg.put.ptl_index) == 64);
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CLASSERT((int)sizeof(((lnet_hdr_t *)0)->msg.put.ptl_index) == 4);
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CLASSERT((int)offsetof(lnet_hdr_t, msg.put.offset) == 68);
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CLASSERT((int)sizeof(((lnet_hdr_t *)0)->msg.put.offset) == 4);
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/* Get */
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CLASSERT((int)offsetof(lnet_hdr_t, msg.get.return_wmd) == 32);
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CLASSERT((int)sizeof(((lnet_hdr_t *)0)->msg.get.return_wmd) == 16);
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CLASSERT((int)offsetof(lnet_hdr_t, msg.get.match_bits) == 48);
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CLASSERT((int)sizeof(((lnet_hdr_t *)0)->msg.get.match_bits) == 8);
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CLASSERT((int)offsetof(lnet_hdr_t, msg.get.ptl_index) == 56);
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CLASSERT((int)sizeof(((lnet_hdr_t *)0)->msg.get.ptl_index) == 4);
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CLASSERT((int)offsetof(lnet_hdr_t, msg.get.src_offset) == 60);
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CLASSERT((int)sizeof(((lnet_hdr_t *)0)->msg.get.src_offset) == 4);
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CLASSERT((int)offsetof(lnet_hdr_t, msg.get.sink_length) == 64);
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CLASSERT((int)sizeof(((lnet_hdr_t *)0)->msg.get.sink_length) == 4);
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/* Reply */
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CLASSERT((int)offsetof(lnet_hdr_t, msg.reply.dst_wmd) == 32);
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CLASSERT((int)sizeof(((lnet_hdr_t *)0)->msg.reply.dst_wmd) == 16);
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/* Hello */
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CLASSERT((int)offsetof(lnet_hdr_t, msg.hello.incarnation) == 32);
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CLASSERT((int)sizeof(((lnet_hdr_t *)0)->msg.hello.incarnation) == 8);
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CLASSERT((int)offsetof(lnet_hdr_t, msg.hello.type) == 40);
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CLASSERT((int)sizeof(((lnet_hdr_t *)0)->msg.hello.type) == 4);
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}
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static lnd_t *
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lnet_find_lnd_by_type(__u32 type)
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{
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lnd_t *lnd;
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struct list_head *tmp;
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/* holding lnd mutex */
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list_for_each(tmp, &the_lnet.ln_lnds) {
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lnd = list_entry(tmp, lnd_t, lnd_list);
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if (lnd->lnd_type == type)
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return lnd;
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}
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return NULL;
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}
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void
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lnet_register_lnd(lnd_t *lnd)
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{
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mutex_lock(&the_lnet.ln_lnd_mutex);
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LASSERT(libcfs_isknown_lnd(lnd->lnd_type));
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LASSERT(!lnet_find_lnd_by_type(lnd->lnd_type));
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list_add_tail(&lnd->lnd_list, &the_lnet.ln_lnds);
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lnd->lnd_refcount = 0;
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CDEBUG(D_NET, "%s LND registered\n", libcfs_lnd2str(lnd->lnd_type));
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mutex_unlock(&the_lnet.ln_lnd_mutex);
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}
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EXPORT_SYMBOL(lnet_register_lnd);
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void
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lnet_unregister_lnd(lnd_t *lnd)
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{
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mutex_lock(&the_lnet.ln_lnd_mutex);
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LASSERT(lnet_find_lnd_by_type(lnd->lnd_type) == lnd);
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LASSERT(!lnd->lnd_refcount);
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list_del(&lnd->lnd_list);
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CDEBUG(D_NET, "%s LND unregistered\n", libcfs_lnd2str(lnd->lnd_type));
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mutex_unlock(&the_lnet.ln_lnd_mutex);
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}
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EXPORT_SYMBOL(lnet_unregister_lnd);
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void
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lnet_counters_get(lnet_counters_t *counters)
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{
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lnet_counters_t *ctr;
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int i;
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memset(counters, 0, sizeof(*counters));
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lnet_net_lock(LNET_LOCK_EX);
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cfs_percpt_for_each(ctr, i, the_lnet.ln_counters) {
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counters->msgs_max += ctr->msgs_max;
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counters->msgs_alloc += ctr->msgs_alloc;
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counters->errors += ctr->errors;
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counters->send_count += ctr->send_count;
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counters->recv_count += ctr->recv_count;
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counters->route_count += ctr->route_count;
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counters->drop_count += ctr->drop_count;
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counters->send_length += ctr->send_length;
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counters->recv_length += ctr->recv_length;
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counters->route_length += ctr->route_length;
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counters->drop_length += ctr->drop_length;
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}
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lnet_net_unlock(LNET_LOCK_EX);
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}
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EXPORT_SYMBOL(lnet_counters_get);
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void
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lnet_counters_reset(void)
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{
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lnet_counters_t *counters;
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int i;
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lnet_net_lock(LNET_LOCK_EX);
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cfs_percpt_for_each(counters, i, the_lnet.ln_counters)
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memset(counters, 0, sizeof(lnet_counters_t));
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lnet_net_unlock(LNET_LOCK_EX);
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}
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static char *
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lnet_res_type2str(int type)
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{
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switch (type) {
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default:
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LBUG();
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case LNET_COOKIE_TYPE_MD:
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return "MD";
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case LNET_COOKIE_TYPE_ME:
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return "ME";
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case LNET_COOKIE_TYPE_EQ:
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return "EQ";
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}
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}
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static void
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lnet_res_container_cleanup(struct lnet_res_container *rec)
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{
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int count = 0;
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if (!rec->rec_type) /* not set yet, it's uninitialized */
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return;
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while (!list_empty(&rec->rec_active)) {
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struct list_head *e = rec->rec_active.next;
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list_del_init(e);
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if (rec->rec_type == LNET_COOKIE_TYPE_EQ) {
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lnet_eq_free(list_entry(e, lnet_eq_t, eq_list));
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} else if (rec->rec_type == LNET_COOKIE_TYPE_MD) {
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lnet_md_free(list_entry(e, lnet_libmd_t, md_list));
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} else { /* NB: Active MEs should be attached on portals */
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LBUG();
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}
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count++;
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}
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if (count > 0) {
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/*
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* Found alive MD/ME/EQ, user really should unlink/free
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* all of them before finalize LNet, but if someone didn't,
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* we have to recycle garbage for him
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*/
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CERROR("%d active elements on exit of %s container\n",
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count, lnet_res_type2str(rec->rec_type));
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}
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if (rec->rec_lh_hash) {
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LIBCFS_FREE(rec->rec_lh_hash,
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LNET_LH_HASH_SIZE * sizeof(rec->rec_lh_hash[0]));
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rec->rec_lh_hash = NULL;
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}
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rec->rec_type = 0; /* mark it as finalized */
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}
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|
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static int
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lnet_res_container_setup(struct lnet_res_container *rec, int cpt, int type)
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{
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int rc = 0;
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int i;
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LASSERT(!rec->rec_type);
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rec->rec_type = type;
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INIT_LIST_HEAD(&rec->rec_active);
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rec->rec_lh_cookie = (cpt << LNET_COOKIE_TYPE_BITS) | type;
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/* Arbitrary choice of hash table size */
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LIBCFS_CPT_ALLOC(rec->rec_lh_hash, lnet_cpt_table(), cpt,
|
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LNET_LH_HASH_SIZE * sizeof(rec->rec_lh_hash[0]));
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if (!rec->rec_lh_hash) {
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rc = -ENOMEM;
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goto out;
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}
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for (i = 0; i < LNET_LH_HASH_SIZE; i++)
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INIT_LIST_HEAD(&rec->rec_lh_hash[i]);
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return 0;
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|
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out:
|
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CERROR("Failed to setup %s resource container\n",
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lnet_res_type2str(type));
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lnet_res_container_cleanup(rec);
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return rc;
|
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}
|
|
|
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static void
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|
lnet_res_containers_destroy(struct lnet_res_container **recs)
|
|
{
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|
struct lnet_res_container *rec;
|
|
int i;
|
|
|
|
cfs_percpt_for_each(rec, i, recs)
|
|
lnet_res_container_cleanup(rec);
|
|
|
|
cfs_percpt_free(recs);
|
|
}
|
|
|
|
static struct lnet_res_container **
|
|
lnet_res_containers_create(int type)
|
|
{
|
|
struct lnet_res_container **recs;
|
|
struct lnet_res_container *rec;
|
|
int rc;
|
|
int i;
|
|
|
|
recs = cfs_percpt_alloc(lnet_cpt_table(), sizeof(*rec));
|
|
if (!recs) {
|
|
CERROR("Failed to allocate %s resource containers\n",
|
|
lnet_res_type2str(type));
|
|
return NULL;
|
|
}
|
|
|
|
cfs_percpt_for_each(rec, i, recs) {
|
|
rc = lnet_res_container_setup(rec, i, type);
|
|
if (rc) {
|
|
lnet_res_containers_destroy(recs);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
return recs;
|
|
}
|
|
|
|
lnet_libhandle_t *
|
|
lnet_res_lh_lookup(struct lnet_res_container *rec, __u64 cookie)
|
|
{
|
|
/* ALWAYS called with lnet_res_lock held */
|
|
struct list_head *head;
|
|
lnet_libhandle_t *lh;
|
|
unsigned int hash;
|
|
|
|
if ((cookie & LNET_COOKIE_MASK) != rec->rec_type)
|
|
return NULL;
|
|
|
|
hash = cookie >> (LNET_COOKIE_TYPE_BITS + LNET_CPT_BITS);
|
|
head = &rec->rec_lh_hash[hash & LNET_LH_HASH_MASK];
|
|
|
|
list_for_each_entry(lh, head, lh_hash_chain) {
|
|
if (lh->lh_cookie == cookie)
|
|
return lh;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
void
|
|
lnet_res_lh_initialize(struct lnet_res_container *rec, lnet_libhandle_t *lh)
|
|
{
|
|
/* ALWAYS called with lnet_res_lock held */
|
|
unsigned int ibits = LNET_COOKIE_TYPE_BITS + LNET_CPT_BITS;
|
|
unsigned int hash;
|
|
|
|
lh->lh_cookie = rec->rec_lh_cookie;
|
|
rec->rec_lh_cookie += 1 << ibits;
|
|
|
|
hash = (lh->lh_cookie >> ibits) & LNET_LH_HASH_MASK;
|
|
|
|
list_add(&lh->lh_hash_chain, &rec->rec_lh_hash[hash]);
|
|
}
|
|
|
|
static int lnet_unprepare(void);
|
|
|
|
static int
|
|
lnet_prepare(lnet_pid_t requested_pid)
|
|
{
|
|
/* Prepare to bring up the network */
|
|
struct lnet_res_container **recs;
|
|
int rc = 0;
|
|
|
|
if (requested_pid == LNET_PID_ANY) {
|
|
/* Don't instantiate LNET just for me */
|
|
return -ENETDOWN;
|
|
}
|
|
|
|
LASSERT(!the_lnet.ln_refcount);
|
|
|
|
the_lnet.ln_routing = 0;
|
|
|
|
LASSERT(!(requested_pid & LNET_PID_USERFLAG));
|
|
the_lnet.ln_pid = requested_pid;
|
|
|
|
INIT_LIST_HEAD(&the_lnet.ln_test_peers);
|
|
INIT_LIST_HEAD(&the_lnet.ln_nis);
|
|
INIT_LIST_HEAD(&the_lnet.ln_nis_cpt);
|
|
INIT_LIST_HEAD(&the_lnet.ln_nis_zombie);
|
|
INIT_LIST_HEAD(&the_lnet.ln_routers);
|
|
INIT_LIST_HEAD(&the_lnet.ln_drop_rules);
|
|
INIT_LIST_HEAD(&the_lnet.ln_delay_rules);
|
|
|
|
rc = lnet_create_remote_nets_table();
|
|
if (rc)
|
|
goto failed;
|
|
/*
|
|
* NB the interface cookie in wire handles guards against delayed
|
|
* replies and ACKs appearing valid after reboot.
|
|
*/
|
|
the_lnet.ln_interface_cookie = ktime_get_ns();
|
|
|
|
the_lnet.ln_counters = cfs_percpt_alloc(lnet_cpt_table(),
|
|
sizeof(lnet_counters_t));
|
|
if (!the_lnet.ln_counters) {
|
|
CERROR("Failed to allocate counters for LNet\n");
|
|
rc = -ENOMEM;
|
|
goto failed;
|
|
}
|
|
|
|
rc = lnet_peer_tables_create();
|
|
if (rc)
|
|
goto failed;
|
|
|
|
rc = lnet_msg_containers_create();
|
|
if (rc)
|
|
goto failed;
|
|
|
|
rc = lnet_res_container_setup(&the_lnet.ln_eq_container, 0,
|
|
LNET_COOKIE_TYPE_EQ);
|
|
if (rc)
|
|
goto failed;
|
|
|
|
recs = lnet_res_containers_create(LNET_COOKIE_TYPE_ME);
|
|
if (!recs) {
|
|
rc = -ENOMEM;
|
|
goto failed;
|
|
}
|
|
|
|
the_lnet.ln_me_containers = recs;
|
|
|
|
recs = lnet_res_containers_create(LNET_COOKIE_TYPE_MD);
|
|
if (!recs) {
|
|
rc = -ENOMEM;
|
|
goto failed;
|
|
}
|
|
|
|
the_lnet.ln_md_containers = recs;
|
|
|
|
rc = lnet_portals_create();
|
|
if (rc) {
|
|
CERROR("Failed to create portals for LNet: %d\n", rc);
|
|
goto failed;
|
|
}
|
|
|
|
return 0;
|
|
|
|
failed:
|
|
lnet_unprepare();
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
lnet_unprepare(void)
|
|
{
|
|
/*
|
|
* NB no LNET_LOCK since this is the last reference. All LND instances
|
|
* have shut down already, so it is safe to unlink and free all
|
|
* descriptors, even those that appear committed to a network op (eg MD
|
|
* with non-zero pending count)
|
|
*/
|
|
lnet_fail_nid(LNET_NID_ANY, 0);
|
|
|
|
LASSERT(!the_lnet.ln_refcount);
|
|
LASSERT(list_empty(&the_lnet.ln_test_peers));
|
|
LASSERT(list_empty(&the_lnet.ln_nis));
|
|
LASSERT(list_empty(&the_lnet.ln_nis_cpt));
|
|
LASSERT(list_empty(&the_lnet.ln_nis_zombie));
|
|
|
|
lnet_portals_destroy();
|
|
|
|
if (the_lnet.ln_md_containers) {
|
|
lnet_res_containers_destroy(the_lnet.ln_md_containers);
|
|
the_lnet.ln_md_containers = NULL;
|
|
}
|
|
|
|
if (the_lnet.ln_me_containers) {
|
|
lnet_res_containers_destroy(the_lnet.ln_me_containers);
|
|
the_lnet.ln_me_containers = NULL;
|
|
}
|
|
|
|
lnet_res_container_cleanup(&the_lnet.ln_eq_container);
|
|
|
|
lnet_msg_containers_destroy();
|
|
lnet_peer_tables_destroy();
|
|
lnet_rtrpools_free(0);
|
|
|
|
if (the_lnet.ln_counters) {
|
|
cfs_percpt_free(the_lnet.ln_counters);
|
|
the_lnet.ln_counters = NULL;
|
|
}
|
|
lnet_destroy_remote_nets_table();
|
|
|
|
return 0;
|
|
}
|
|
|
|
lnet_ni_t *
|
|
lnet_net2ni_locked(__u32 net, int cpt)
|
|
{
|
|
struct list_head *tmp;
|
|
lnet_ni_t *ni;
|
|
|
|
LASSERT(cpt != LNET_LOCK_EX);
|
|
|
|
list_for_each(tmp, &the_lnet.ln_nis) {
|
|
ni = list_entry(tmp, lnet_ni_t, ni_list);
|
|
|
|
if (LNET_NIDNET(ni->ni_nid) == net) {
|
|
lnet_ni_addref_locked(ni, cpt);
|
|
return ni;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
lnet_ni_t *
|
|
lnet_net2ni(__u32 net)
|
|
{
|
|
lnet_ni_t *ni;
|
|
|
|
lnet_net_lock(0);
|
|
ni = lnet_net2ni_locked(net, 0);
|
|
lnet_net_unlock(0);
|
|
|
|
return ni;
|
|
}
|
|
EXPORT_SYMBOL(lnet_net2ni);
|
|
|
|
static unsigned int
|
|
lnet_nid_cpt_hash(lnet_nid_t nid, unsigned int number)
|
|
{
|
|
__u64 key = nid;
|
|
unsigned int val;
|
|
|
|
LASSERT(number >= 1 && number <= LNET_CPT_NUMBER);
|
|
|
|
if (number == 1)
|
|
return 0;
|
|
|
|
val = hash_long(key, LNET_CPT_BITS);
|
|
/* NB: LNET_CP_NUMBER doesn't have to be PO2 */
|
|
if (val < number)
|
|
return val;
|
|
|
|
return (unsigned int)(key + val + (val >> 1)) % number;
|
|
}
|
|
|
|
int
|
|
lnet_cpt_of_nid_locked(lnet_nid_t nid)
|
|
{
|
|
struct lnet_ni *ni;
|
|
|
|
/* must called with hold of lnet_net_lock */
|
|
if (LNET_CPT_NUMBER == 1)
|
|
return 0; /* the only one */
|
|
|
|
/* take lnet_net_lock(any) would be OK */
|
|
if (!list_empty(&the_lnet.ln_nis_cpt)) {
|
|
list_for_each_entry(ni, &the_lnet.ln_nis_cpt, ni_cptlist) {
|
|
if (LNET_NIDNET(ni->ni_nid) != LNET_NIDNET(nid))
|
|
continue;
|
|
|
|
LASSERT(ni->ni_cpts);
|
|
return ni->ni_cpts[lnet_nid_cpt_hash
|
|
(nid, ni->ni_ncpts)];
|
|
}
|
|
}
|
|
|
|
return lnet_nid_cpt_hash(nid, LNET_CPT_NUMBER);
|
|
}
|
|
|
|
int
|
|
lnet_cpt_of_nid(lnet_nid_t nid)
|
|
{
|
|
int cpt;
|
|
int cpt2;
|
|
|
|
if (LNET_CPT_NUMBER == 1)
|
|
return 0; /* the only one */
|
|
|
|
if (list_empty(&the_lnet.ln_nis_cpt))
|
|
return lnet_nid_cpt_hash(nid, LNET_CPT_NUMBER);
|
|
|
|
cpt = lnet_net_lock_current();
|
|
cpt2 = lnet_cpt_of_nid_locked(nid);
|
|
lnet_net_unlock(cpt);
|
|
|
|
return cpt2;
|
|
}
|
|
EXPORT_SYMBOL(lnet_cpt_of_nid);
|
|
|
|
int
|
|
lnet_islocalnet(__u32 net)
|
|
{
|
|
struct lnet_ni *ni;
|
|
int cpt;
|
|
|
|
cpt = lnet_net_lock_current();
|
|
|
|
ni = lnet_net2ni_locked(net, cpt);
|
|
if (ni)
|
|
lnet_ni_decref_locked(ni, cpt);
|
|
|
|
lnet_net_unlock(cpt);
|
|
|
|
return !!ni;
|
|
}
|
|
|
|
lnet_ni_t *
|
|
lnet_nid2ni_locked(lnet_nid_t nid, int cpt)
|
|
{
|
|
struct lnet_ni *ni;
|
|
struct list_head *tmp;
|
|
|
|
LASSERT(cpt != LNET_LOCK_EX);
|
|
|
|
list_for_each(tmp, &the_lnet.ln_nis) {
|
|
ni = list_entry(tmp, lnet_ni_t, ni_list);
|
|
|
|
if (ni->ni_nid == nid) {
|
|
lnet_ni_addref_locked(ni, cpt);
|
|
return ni;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
int
|
|
lnet_islocalnid(lnet_nid_t nid)
|
|
{
|
|
struct lnet_ni *ni;
|
|
int cpt;
|
|
|
|
cpt = lnet_net_lock_current();
|
|
ni = lnet_nid2ni_locked(nid, cpt);
|
|
if (ni)
|
|
lnet_ni_decref_locked(ni, cpt);
|
|
lnet_net_unlock(cpt);
|
|
|
|
return !!ni;
|
|
}
|
|
|
|
int
|
|
lnet_count_acceptor_nis(void)
|
|
{
|
|
/* Return the # of NIs that need the acceptor. */
|
|
int count = 0;
|
|
struct list_head *tmp;
|
|
struct lnet_ni *ni;
|
|
int cpt;
|
|
|
|
cpt = lnet_net_lock_current();
|
|
list_for_each(tmp, &the_lnet.ln_nis) {
|
|
ni = list_entry(tmp, lnet_ni_t, ni_list);
|
|
|
|
if (ni->ni_lnd->lnd_accept)
|
|
count++;
|
|
}
|
|
|
|
lnet_net_unlock(cpt);
|
|
|
|
return count;
|
|
}
|
|
|
|
static lnet_ping_info_t *
|
|
lnet_ping_info_create(int num_ni)
|
|
{
|
|
lnet_ping_info_t *ping_info;
|
|
unsigned int infosz;
|
|
|
|
infosz = offsetof(lnet_ping_info_t, pi_ni[num_ni]);
|
|
LIBCFS_ALLOC(ping_info, infosz);
|
|
if (!ping_info) {
|
|
CERROR("Can't allocate ping info[%d]\n", num_ni);
|
|
return NULL;
|
|
}
|
|
|
|
ping_info->pi_nnis = num_ni;
|
|
ping_info->pi_pid = the_lnet.ln_pid;
|
|
ping_info->pi_magic = LNET_PROTO_PING_MAGIC;
|
|
ping_info->pi_features = LNET_PING_FEAT_NI_STATUS;
|
|
|
|
return ping_info;
|
|
}
|
|
|
|
static inline int
|
|
lnet_get_ni_count(void)
|
|
{
|
|
struct lnet_ni *ni;
|
|
int count = 0;
|
|
|
|
lnet_net_lock(0);
|
|
|
|
list_for_each_entry(ni, &the_lnet.ln_nis, ni_list)
|
|
count++;
|
|
|
|
lnet_net_unlock(0);
|
|
|
|
return count;
|
|
}
|
|
|
|
static inline void
|
|
lnet_ping_info_free(lnet_ping_info_t *pinfo)
|
|
{
|
|
LIBCFS_FREE(pinfo,
|
|
offsetof(lnet_ping_info_t,
|
|
pi_ni[pinfo->pi_nnis]));
|
|
}
|
|
|
|
static void
|
|
lnet_ping_info_destroy(void)
|
|
{
|
|
struct lnet_ni *ni;
|
|
|
|
lnet_net_lock(LNET_LOCK_EX);
|
|
|
|
list_for_each_entry(ni, &the_lnet.ln_nis, ni_list) {
|
|
lnet_ni_lock(ni);
|
|
ni->ni_status = NULL;
|
|
lnet_ni_unlock(ni);
|
|
}
|
|
|
|
lnet_ping_info_free(the_lnet.ln_ping_info);
|
|
the_lnet.ln_ping_info = NULL;
|
|
|
|
lnet_net_unlock(LNET_LOCK_EX);
|
|
}
|
|
|
|
static void
|
|
lnet_ping_event_handler(lnet_event_t *event)
|
|
{
|
|
lnet_ping_info_t *pinfo = event->md.user_ptr;
|
|
|
|
if (event->unlinked)
|
|
pinfo->pi_features = LNET_PING_FEAT_INVAL;
|
|
}
|
|
|
|
static int
|
|
lnet_ping_info_setup(lnet_ping_info_t **ppinfo, lnet_handle_md_t *md_handle,
|
|
int ni_count, bool set_eq)
|
|
{
|
|
lnet_process_id_t id = {LNET_NID_ANY, LNET_PID_ANY};
|
|
lnet_handle_me_t me_handle;
|
|
lnet_md_t md = { NULL };
|
|
int rc, rc2;
|
|
|
|
if (set_eq) {
|
|
rc = LNetEQAlloc(0, lnet_ping_event_handler,
|
|
&the_lnet.ln_ping_target_eq);
|
|
if (rc) {
|
|
CERROR("Can't allocate ping EQ: %d\n", rc);
|
|
return rc;
|
|
}
|
|
}
|
|
|
|
*ppinfo = lnet_ping_info_create(ni_count);
|
|
if (!*ppinfo) {
|
|
rc = -ENOMEM;
|
|
goto failed_0;
|
|
}
|
|
|
|
rc = LNetMEAttach(LNET_RESERVED_PORTAL, id,
|
|
LNET_PROTO_PING_MATCHBITS, 0,
|
|
LNET_UNLINK, LNET_INS_AFTER,
|
|
&me_handle);
|
|
if (rc) {
|
|
CERROR("Can't create ping ME: %d\n", rc);
|
|
goto failed_1;
|
|
}
|
|
|
|
/* initialize md content */
|
|
md.start = *ppinfo;
|
|
md.length = offsetof(lnet_ping_info_t,
|
|
pi_ni[(*ppinfo)->pi_nnis]);
|
|
md.threshold = LNET_MD_THRESH_INF;
|
|
md.max_size = 0;
|
|
md.options = LNET_MD_OP_GET | LNET_MD_TRUNCATE |
|
|
LNET_MD_MANAGE_REMOTE;
|
|
md.user_ptr = NULL;
|
|
md.eq_handle = the_lnet.ln_ping_target_eq;
|
|
md.user_ptr = *ppinfo;
|
|
|
|
rc = LNetMDAttach(me_handle, md, LNET_RETAIN, md_handle);
|
|
if (rc) {
|
|
CERROR("Can't attach ping MD: %d\n", rc);
|
|
goto failed_2;
|
|
}
|
|
|
|
return 0;
|
|
|
|
failed_2:
|
|
rc2 = LNetMEUnlink(me_handle);
|
|
LASSERT(!rc2);
|
|
failed_1:
|
|
lnet_ping_info_free(*ppinfo);
|
|
*ppinfo = NULL;
|
|
failed_0:
|
|
if (set_eq)
|
|
LNetEQFree(the_lnet.ln_ping_target_eq);
|
|
return rc;
|
|
}
|
|
|
|
static void
|
|
lnet_ping_md_unlink(lnet_ping_info_t *pinfo, lnet_handle_md_t *md_handle)
|
|
{
|
|
sigset_t blocked = cfs_block_allsigs();
|
|
|
|
LNetMDUnlink(*md_handle);
|
|
LNetInvalidateHandle(md_handle);
|
|
|
|
/* NB md could be busy; this just starts the unlink */
|
|
while (pinfo->pi_features != LNET_PING_FEAT_INVAL) {
|
|
CDEBUG(D_NET, "Still waiting for ping MD to unlink\n");
|
|
set_current_state(TASK_UNINTERRUPTIBLE);
|
|
schedule_timeout(cfs_time_seconds(1));
|
|
}
|
|
|
|
cfs_restore_sigs(blocked);
|
|
}
|
|
|
|
static void
|
|
lnet_ping_info_install_locked(lnet_ping_info_t *ping_info)
|
|
{
|
|
lnet_ni_status_t *ns;
|
|
lnet_ni_t *ni;
|
|
int i = 0;
|
|
|
|
list_for_each_entry(ni, &the_lnet.ln_nis, ni_list) {
|
|
LASSERT(i < ping_info->pi_nnis);
|
|
|
|
ns = &ping_info->pi_ni[i];
|
|
|
|
ns->ns_nid = ni->ni_nid;
|
|
|
|
lnet_ni_lock(ni);
|
|
ns->ns_status = (ni->ni_status) ?
|
|
ni->ni_status->ns_status : LNET_NI_STATUS_UP;
|
|
ni->ni_status = ns;
|
|
lnet_ni_unlock(ni);
|
|
|
|
i++;
|
|
}
|
|
}
|
|
|
|
static void
|
|
lnet_ping_target_update(lnet_ping_info_t *pinfo, lnet_handle_md_t md_handle)
|
|
{
|
|
lnet_ping_info_t *old_pinfo = NULL;
|
|
lnet_handle_md_t old_md;
|
|
|
|
/* switch the NIs to point to the new ping info created */
|
|
lnet_net_lock(LNET_LOCK_EX);
|
|
|
|
if (!the_lnet.ln_routing)
|
|
pinfo->pi_features |= LNET_PING_FEAT_RTE_DISABLED;
|
|
lnet_ping_info_install_locked(pinfo);
|
|
|
|
if (the_lnet.ln_ping_info) {
|
|
old_pinfo = the_lnet.ln_ping_info;
|
|
old_md = the_lnet.ln_ping_target_md;
|
|
}
|
|
the_lnet.ln_ping_target_md = md_handle;
|
|
the_lnet.ln_ping_info = pinfo;
|
|
|
|
lnet_net_unlock(LNET_LOCK_EX);
|
|
|
|
if (old_pinfo) {
|
|
/* unlink the old ping info */
|
|
lnet_ping_md_unlink(old_pinfo, &old_md);
|
|
lnet_ping_info_free(old_pinfo);
|
|
}
|
|
}
|
|
|
|
static void
|
|
lnet_ping_target_fini(void)
|
|
{
|
|
int rc;
|
|
|
|
lnet_ping_md_unlink(the_lnet.ln_ping_info,
|
|
&the_lnet.ln_ping_target_md);
|
|
|
|
rc = LNetEQFree(the_lnet.ln_ping_target_eq);
|
|
LASSERT(!rc);
|
|
|
|
lnet_ping_info_destroy();
|
|
}
|
|
|
|
static int
|
|
lnet_ni_tq_credits(lnet_ni_t *ni)
|
|
{
|
|
int credits;
|
|
|
|
LASSERT(ni->ni_ncpts >= 1);
|
|
|
|
if (ni->ni_ncpts == 1)
|
|
return ni->ni_maxtxcredits;
|
|
|
|
credits = ni->ni_maxtxcredits / ni->ni_ncpts;
|
|
credits = max(credits, 8 * ni->ni_peertxcredits);
|
|
credits = min(credits, ni->ni_maxtxcredits);
|
|
|
|
return credits;
|
|
}
|
|
|
|
static void
|
|
lnet_ni_unlink_locked(lnet_ni_t *ni)
|
|
{
|
|
if (!list_empty(&ni->ni_cptlist)) {
|
|
list_del_init(&ni->ni_cptlist);
|
|
lnet_ni_decref_locked(ni, 0);
|
|
}
|
|
|
|
/* move it to zombie list and nobody can find it anymore */
|
|
LASSERT(!list_empty(&ni->ni_list));
|
|
list_move(&ni->ni_list, &the_lnet.ln_nis_zombie);
|
|
lnet_ni_decref_locked(ni, 0); /* drop ln_nis' ref */
|
|
}
|
|
|
|
static void
|
|
lnet_clear_zombies_nis_locked(void)
|
|
{
|
|
int i;
|
|
int islo;
|
|
lnet_ni_t *ni;
|
|
lnet_ni_t *temp;
|
|
|
|
/*
|
|
* Now wait for the NI's I just nuked to show up on ln_zombie_nis
|
|
* and shut them down in guaranteed thread context
|
|
*/
|
|
i = 2;
|
|
list_for_each_entry_safe(ni, temp, &the_lnet.ln_nis_zombie, ni_list) {
|
|
int *ref;
|
|
int j;
|
|
|
|
list_del_init(&ni->ni_list);
|
|
cfs_percpt_for_each(ref, j, ni->ni_refs) {
|
|
if (!*ref)
|
|
continue;
|
|
/* still busy, add it back to zombie list */
|
|
list_add(&ni->ni_list, &the_lnet.ln_nis_zombie);
|
|
break;
|
|
}
|
|
|
|
if (!list_empty(&ni->ni_list)) {
|
|
lnet_net_unlock(LNET_LOCK_EX);
|
|
++i;
|
|
if ((i & (-i)) == i) {
|
|
CDEBUG(D_WARNING, "Waiting for zombie LNI %s\n",
|
|
libcfs_nid2str(ni->ni_nid));
|
|
}
|
|
set_current_state(TASK_UNINTERRUPTIBLE);
|
|
schedule_timeout(cfs_time_seconds(1));
|
|
lnet_net_lock(LNET_LOCK_EX);
|
|
continue;
|
|
}
|
|
|
|
ni->ni_lnd->lnd_refcount--;
|
|
lnet_net_unlock(LNET_LOCK_EX);
|
|
|
|
islo = ni->ni_lnd->lnd_type == LOLND;
|
|
|
|
LASSERT(!in_interrupt());
|
|
ni->ni_lnd->lnd_shutdown(ni);
|
|
|
|
/*
|
|
* can't deref lnd anymore now; it might have unregistered
|
|
* itself...
|
|
*/
|
|
if (!islo)
|
|
CDEBUG(D_LNI, "Removed LNI %s\n",
|
|
libcfs_nid2str(ni->ni_nid));
|
|
|
|
lnet_ni_free(ni);
|
|
i = 2;
|
|
|
|
lnet_net_lock(LNET_LOCK_EX);
|
|
}
|
|
}
|
|
|
|
static void
|
|
lnet_shutdown_lndnis(void)
|
|
{
|
|
lnet_ni_t *ni;
|
|
lnet_ni_t *temp;
|
|
int i;
|
|
|
|
/* NB called holding the global mutex */
|
|
|
|
/* All quiet on the API front */
|
|
LASSERT(!the_lnet.ln_shutdown);
|
|
LASSERT(!the_lnet.ln_refcount);
|
|
LASSERT(list_empty(&the_lnet.ln_nis_zombie));
|
|
|
|
lnet_net_lock(LNET_LOCK_EX);
|
|
the_lnet.ln_shutdown = 1; /* flag shutdown */
|
|
|
|
/* Unlink NIs from the global table */
|
|
list_for_each_entry_safe(ni, temp, &the_lnet.ln_nis, ni_list) {
|
|
lnet_ni_unlink_locked(ni);
|
|
}
|
|
|
|
/* Drop the cached loopback NI. */
|
|
if (the_lnet.ln_loni) {
|
|
lnet_ni_decref_locked(the_lnet.ln_loni, 0);
|
|
the_lnet.ln_loni = NULL;
|
|
}
|
|
|
|
lnet_net_unlock(LNET_LOCK_EX);
|
|
|
|
/*
|
|
* Clear lazy portals and drop delayed messages which hold refs
|
|
* on their lnet_msg_t::msg_rxpeer
|
|
*/
|
|
for (i = 0; i < the_lnet.ln_nportals; i++)
|
|
LNetClearLazyPortal(i);
|
|
|
|
/*
|
|
* Clear the peer table and wait for all peers to go (they hold refs on
|
|
* their NIs)
|
|
*/
|
|
lnet_peer_tables_cleanup(NULL);
|
|
|
|
lnet_net_lock(LNET_LOCK_EX);
|
|
|
|
lnet_clear_zombies_nis_locked();
|
|
the_lnet.ln_shutdown = 0;
|
|
lnet_net_unlock(LNET_LOCK_EX);
|
|
}
|
|
|
|
/* shutdown down the NI and release refcount */
|
|
static void
|
|
lnet_shutdown_lndni(struct lnet_ni *ni)
|
|
{
|
|
int i;
|
|
|
|
lnet_net_lock(LNET_LOCK_EX);
|
|
lnet_ni_unlink_locked(ni);
|
|
lnet_net_unlock(LNET_LOCK_EX);
|
|
|
|
/* clear messages for this NI on the lazy portal */
|
|
for (i = 0; i < the_lnet.ln_nportals; i++)
|
|
lnet_clear_lazy_portal(ni, i, "Shutting down NI");
|
|
|
|
/* Do peer table cleanup for this ni */
|
|
lnet_peer_tables_cleanup(ni);
|
|
|
|
lnet_net_lock(LNET_LOCK_EX);
|
|
lnet_clear_zombies_nis_locked();
|
|
lnet_net_unlock(LNET_LOCK_EX);
|
|
}
|
|
|
|
static int
|
|
lnet_startup_lndni(struct lnet_ni *ni, __s32 peer_timeout,
|
|
__s32 peer_cr, __s32 peer_buf_cr, __s32 credits)
|
|
{
|
|
int rc = -EINVAL;
|
|
int lnd_type;
|
|
lnd_t *lnd;
|
|
struct lnet_tx_queue *tq;
|
|
int i;
|
|
|
|
lnd_type = LNET_NETTYP(LNET_NIDNET(ni->ni_nid));
|
|
|
|
LASSERT(libcfs_isknown_lnd(lnd_type));
|
|
|
|
if (lnd_type == CIBLND || lnd_type == OPENIBLND ||
|
|
lnd_type == IIBLND || lnd_type == VIBLND) {
|
|
CERROR("LND %s obsoleted\n", libcfs_lnd2str(lnd_type));
|
|
goto failed0;
|
|
}
|
|
|
|
/* Make sure this new NI is unique. */
|
|
lnet_net_lock(LNET_LOCK_EX);
|
|
rc = lnet_net_unique(LNET_NIDNET(ni->ni_nid), &the_lnet.ln_nis);
|
|
lnet_net_unlock(LNET_LOCK_EX);
|
|
if (!rc) {
|
|
if (lnd_type == LOLND) {
|
|
lnet_ni_free(ni);
|
|
return 0;
|
|
}
|
|
|
|
CERROR("Net %s is not unique\n",
|
|
libcfs_net2str(LNET_NIDNET(ni->ni_nid)));
|
|
rc = -EEXIST;
|
|
goto failed0;
|
|
}
|
|
|
|
mutex_lock(&the_lnet.ln_lnd_mutex);
|
|
lnd = lnet_find_lnd_by_type(lnd_type);
|
|
|
|
if (!lnd) {
|
|
mutex_unlock(&the_lnet.ln_lnd_mutex);
|
|
rc = request_module("%s", libcfs_lnd2modname(lnd_type));
|
|
mutex_lock(&the_lnet.ln_lnd_mutex);
|
|
|
|
lnd = lnet_find_lnd_by_type(lnd_type);
|
|
if (!lnd) {
|
|
mutex_unlock(&the_lnet.ln_lnd_mutex);
|
|
CERROR("Can't load LND %s, module %s, rc=%d\n",
|
|
libcfs_lnd2str(lnd_type),
|
|
libcfs_lnd2modname(lnd_type), rc);
|
|
rc = -EINVAL;
|
|
goto failed0;
|
|
}
|
|
}
|
|
|
|
lnet_net_lock(LNET_LOCK_EX);
|
|
lnd->lnd_refcount++;
|
|
lnet_net_unlock(LNET_LOCK_EX);
|
|
|
|
ni->ni_lnd = lnd;
|
|
|
|
rc = lnd->lnd_startup(ni);
|
|
|
|
mutex_unlock(&the_lnet.ln_lnd_mutex);
|
|
|
|
if (rc) {
|
|
LCONSOLE_ERROR_MSG(0x105, "Error %d starting up LNI %s\n",
|
|
rc, libcfs_lnd2str(lnd->lnd_type));
|
|
lnet_net_lock(LNET_LOCK_EX);
|
|
lnd->lnd_refcount--;
|
|
lnet_net_unlock(LNET_LOCK_EX);
|
|
goto failed0;
|
|
}
|
|
|
|
/*
|
|
* If given some LND tunable parameters, parse those now to
|
|
* override the values in the NI structure.
|
|
*/
|
|
if (peer_buf_cr >= 0)
|
|
ni->ni_peerrtrcredits = peer_buf_cr;
|
|
if (peer_timeout >= 0)
|
|
ni->ni_peertimeout = peer_timeout;
|
|
/*
|
|
* TODO
|
|
* Note: For now, don't allow the user to change
|
|
* peertxcredits as this number is used in the
|
|
* IB LND to control queue depth.
|
|
* if (peer_cr != -1)
|
|
* ni->ni_peertxcredits = peer_cr;
|
|
*/
|
|
if (credits >= 0)
|
|
ni->ni_maxtxcredits = credits;
|
|
|
|
LASSERT(ni->ni_peertimeout <= 0 || lnd->lnd_query);
|
|
|
|
lnet_net_lock(LNET_LOCK_EX);
|
|
/* refcount for ln_nis */
|
|
lnet_ni_addref_locked(ni, 0);
|
|
list_add_tail(&ni->ni_list, &the_lnet.ln_nis);
|
|
if (ni->ni_cpts) {
|
|
lnet_ni_addref_locked(ni, 0);
|
|
list_add_tail(&ni->ni_cptlist, &the_lnet.ln_nis_cpt);
|
|
}
|
|
|
|
lnet_net_unlock(LNET_LOCK_EX);
|
|
|
|
if (lnd->lnd_type == LOLND) {
|
|
lnet_ni_addref(ni);
|
|
LASSERT(!the_lnet.ln_loni);
|
|
the_lnet.ln_loni = ni;
|
|
return 0;
|
|
}
|
|
|
|
if (!ni->ni_peertxcredits || !ni->ni_maxtxcredits) {
|
|
LCONSOLE_ERROR_MSG(0x107, "LNI %s has no %scredits\n",
|
|
libcfs_lnd2str(lnd->lnd_type),
|
|
!ni->ni_peertxcredits ?
|
|
"" : "per-peer ");
|
|
/*
|
|
* shutdown the NI since if we get here then it must've already
|
|
* been started
|
|
*/
|
|
lnet_shutdown_lndni(ni);
|
|
return -EINVAL;
|
|
}
|
|
|
|
cfs_percpt_for_each(tq, i, ni->ni_tx_queues) {
|
|
tq->tq_credits_min =
|
|
tq->tq_credits_max =
|
|
tq->tq_credits = lnet_ni_tq_credits(ni);
|
|
}
|
|
|
|
CDEBUG(D_LNI, "Added LNI %s [%d/%d/%d/%d]\n",
|
|
libcfs_nid2str(ni->ni_nid), ni->ni_peertxcredits,
|
|
lnet_ni_tq_credits(ni) * LNET_CPT_NUMBER,
|
|
ni->ni_peerrtrcredits, ni->ni_peertimeout);
|
|
|
|
return 0;
|
|
failed0:
|
|
lnet_ni_free(ni);
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
lnet_startup_lndnis(struct list_head *nilist)
|
|
{
|
|
struct lnet_ni *ni;
|
|
int rc;
|
|
int ni_count = 0;
|
|
|
|
while (!list_empty(nilist)) {
|
|
ni = list_entry(nilist->next, lnet_ni_t, ni_list);
|
|
list_del(&ni->ni_list);
|
|
rc = lnet_startup_lndni(ni, -1, -1, -1, -1);
|
|
|
|
if (rc < 0)
|
|
goto failed;
|
|
|
|
ni_count++;
|
|
}
|
|
|
|
return ni_count;
|
|
failed:
|
|
lnet_shutdown_lndnis();
|
|
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* Initialize LNet library.
|
|
*
|
|
* Automatically called at module loading time. Caller has to call
|
|
* lnet_lib_exit() after a call to lnet_lib_init(), if and only if the
|
|
* latter returned 0. It must be called exactly once.
|
|
*
|
|
* \retval 0 on success
|
|
* \retval -ve on failures.
|
|
*/
|
|
int lnet_lib_init(void)
|
|
{
|
|
int rc;
|
|
|
|
lnet_assert_wire_constants();
|
|
|
|
memset(&the_lnet, 0, sizeof(the_lnet));
|
|
|
|
/* refer to global cfs_cpt_table for now */
|
|
the_lnet.ln_cpt_table = cfs_cpt_table;
|
|
the_lnet.ln_cpt_number = cfs_cpt_number(cfs_cpt_table);
|
|
|
|
LASSERT(the_lnet.ln_cpt_number > 0);
|
|
if (the_lnet.ln_cpt_number > LNET_CPT_MAX) {
|
|
/* we are under risk of consuming all lh_cookie */
|
|
CERROR("Can't have %d CPTs for LNet (max allowed is %d), please change setting of CPT-table and retry\n",
|
|
the_lnet.ln_cpt_number, LNET_CPT_MAX);
|
|
return -E2BIG;
|
|
}
|
|
|
|
while ((1 << the_lnet.ln_cpt_bits) < the_lnet.ln_cpt_number)
|
|
the_lnet.ln_cpt_bits++;
|
|
|
|
rc = lnet_create_locks();
|
|
if (rc) {
|
|
CERROR("Can't create LNet global locks: %d\n", rc);
|
|
return rc;
|
|
}
|
|
|
|
the_lnet.ln_refcount = 0;
|
|
LNetInvalidateHandle(&the_lnet.ln_rc_eqh);
|
|
INIT_LIST_HEAD(&the_lnet.ln_lnds);
|
|
INIT_LIST_HEAD(&the_lnet.ln_rcd_zombie);
|
|
INIT_LIST_HEAD(&the_lnet.ln_rcd_deathrow);
|
|
|
|
/*
|
|
* The hash table size is the number of bits it takes to express the set
|
|
* ln_num_routes, minus 1 (better to under estimate than over so we
|
|
* don't waste memory).
|
|
*/
|
|
if (rnet_htable_size <= 0)
|
|
rnet_htable_size = LNET_REMOTE_NETS_HASH_DEFAULT;
|
|
else if (rnet_htable_size > LNET_REMOTE_NETS_HASH_MAX)
|
|
rnet_htable_size = LNET_REMOTE_NETS_HASH_MAX;
|
|
the_lnet.ln_remote_nets_hbits = max_t(int, 1,
|
|
order_base_2(rnet_htable_size) - 1);
|
|
|
|
/*
|
|
* All LNDs apart from the LOLND are in separate modules. They
|
|
* register themselves when their module loads, and unregister
|
|
* themselves when their module is unloaded.
|
|
*/
|
|
lnet_register_lnd(&the_lolnd);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Finalize LNet library.
|
|
*
|
|
* \pre lnet_lib_init() called with success.
|
|
* \pre All LNet users called LNetNIFini() for matching LNetNIInit() calls.
|
|
*/
|
|
void lnet_lib_exit(void)
|
|
{
|
|
LASSERT(!the_lnet.ln_refcount);
|
|
|
|
while (!list_empty(&the_lnet.ln_lnds))
|
|
lnet_unregister_lnd(list_entry(the_lnet.ln_lnds.next,
|
|
lnd_t, lnd_list));
|
|
lnet_destroy_locks();
|
|
}
|
|
|
|
/**
|
|
* Set LNet PID and start LNet interfaces, routing, and forwarding.
|
|
*
|
|
* Users must call this function at least once before any other functions.
|
|
* For each successful call there must be a corresponding call to
|
|
* LNetNIFini(). For subsequent calls to LNetNIInit(), \a requested_pid is
|
|
* ignored.
|
|
*
|
|
* The PID used by LNet may be different from the one requested.
|
|
* See LNetGetId().
|
|
*
|
|
* \param requested_pid PID requested by the caller.
|
|
*
|
|
* \return >= 0 on success, and < 0 error code on failures.
|
|
*/
|
|
int
|
|
LNetNIInit(lnet_pid_t requested_pid)
|
|
{
|
|
int im_a_router = 0;
|
|
int rc;
|
|
int ni_count;
|
|
lnet_ping_info_t *pinfo;
|
|
lnet_handle_md_t md_handle;
|
|
struct list_head net_head;
|
|
|
|
INIT_LIST_HEAD(&net_head);
|
|
|
|
mutex_lock(&the_lnet.ln_api_mutex);
|
|
|
|
CDEBUG(D_OTHER, "refs %d\n", the_lnet.ln_refcount);
|
|
|
|
if (the_lnet.ln_refcount > 0) {
|
|
rc = the_lnet.ln_refcount++;
|
|
mutex_unlock(&the_lnet.ln_api_mutex);
|
|
return rc;
|
|
}
|
|
|
|
rc = lnet_prepare(requested_pid);
|
|
if (rc) {
|
|
mutex_unlock(&the_lnet.ln_api_mutex);
|
|
return rc;
|
|
}
|
|
|
|
/* Add in the loopback network */
|
|
if (!lnet_ni_alloc(LNET_MKNET(LOLND, 0), NULL, &net_head)) {
|
|
rc = -ENOMEM;
|
|
goto err_empty_list;
|
|
}
|
|
|
|
/*
|
|
* If LNet is being initialized via DLC it is possible
|
|
* that the user requests not to load module parameters (ones which
|
|
* are supported by DLC) on initialization. Therefore, make sure not
|
|
* to load networks, routes and forwarding from module parameters
|
|
* in this case. On cleanup in case of failure only clean up
|
|
* routes if it has been loaded
|
|
*/
|
|
if (!the_lnet.ln_nis_from_mod_params) {
|
|
rc = lnet_parse_networks(&net_head, lnet_get_networks());
|
|
if (rc < 0)
|
|
goto err_empty_list;
|
|
}
|
|
|
|
ni_count = lnet_startup_lndnis(&net_head);
|
|
if (ni_count < 0) {
|
|
rc = ni_count;
|
|
goto err_empty_list;
|
|
}
|
|
|
|
if (!the_lnet.ln_nis_from_mod_params) {
|
|
rc = lnet_parse_routes(lnet_get_routes(), &im_a_router);
|
|
if (rc)
|
|
goto err_shutdown_lndnis;
|
|
|
|
rc = lnet_check_routes();
|
|
if (rc)
|
|
goto err_destory_routes;
|
|
|
|
rc = lnet_rtrpools_alloc(im_a_router);
|
|
if (rc)
|
|
goto err_destory_routes;
|
|
}
|
|
|
|
rc = lnet_acceptor_start();
|
|
if (rc)
|
|
goto err_destory_routes;
|
|
|
|
the_lnet.ln_refcount = 1;
|
|
/* Now I may use my own API functions... */
|
|
|
|
rc = lnet_ping_info_setup(&pinfo, &md_handle, ni_count, true);
|
|
if (rc)
|
|
goto err_acceptor_stop;
|
|
|
|
lnet_ping_target_update(pinfo, md_handle);
|
|
|
|
rc = lnet_router_checker_start();
|
|
if (rc)
|
|
goto err_stop_ping;
|
|
|
|
lnet_fault_init();
|
|
lnet_router_debugfs_init();
|
|
|
|
mutex_unlock(&the_lnet.ln_api_mutex);
|
|
|
|
return 0;
|
|
|
|
err_stop_ping:
|
|
lnet_ping_target_fini();
|
|
err_acceptor_stop:
|
|
the_lnet.ln_refcount = 0;
|
|
lnet_acceptor_stop();
|
|
err_destory_routes:
|
|
if (!the_lnet.ln_nis_from_mod_params)
|
|
lnet_destroy_routes();
|
|
err_shutdown_lndnis:
|
|
lnet_shutdown_lndnis();
|
|
err_empty_list:
|
|
lnet_unprepare();
|
|
LASSERT(rc < 0);
|
|
mutex_unlock(&the_lnet.ln_api_mutex);
|
|
while (!list_empty(&net_head)) {
|
|
struct lnet_ni *ni;
|
|
|
|
ni = list_entry(net_head.next, struct lnet_ni, ni_list);
|
|
list_del_init(&ni->ni_list);
|
|
lnet_ni_free(ni);
|
|
}
|
|
return rc;
|
|
}
|
|
EXPORT_SYMBOL(LNetNIInit);
|
|
|
|
/**
|
|
* Stop LNet interfaces, routing, and forwarding.
|
|
*
|
|
* Users must call this function once for each successful call to LNetNIInit().
|
|
* Once the LNetNIFini() operation has been started, the results of pending
|
|
* API operations are undefined.
|
|
*
|
|
* \return always 0 for current implementation.
|
|
*/
|
|
int
|
|
LNetNIFini(void)
|
|
{
|
|
mutex_lock(&the_lnet.ln_api_mutex);
|
|
|
|
LASSERT(the_lnet.ln_refcount > 0);
|
|
|
|
if (the_lnet.ln_refcount != 1) {
|
|
the_lnet.ln_refcount--;
|
|
} else {
|
|
LASSERT(!the_lnet.ln_niinit_self);
|
|
|
|
lnet_fault_fini();
|
|
lnet_router_debugfs_fini();
|
|
lnet_router_checker_stop();
|
|
lnet_ping_target_fini();
|
|
|
|
/* Teardown fns that use my own API functions BEFORE here */
|
|
the_lnet.ln_refcount = 0;
|
|
|
|
lnet_acceptor_stop();
|
|
lnet_destroy_routes();
|
|
lnet_shutdown_lndnis();
|
|
lnet_unprepare();
|
|
}
|
|
|
|
mutex_unlock(&the_lnet.ln_api_mutex);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(LNetNIFini);
|
|
|
|
/**
|
|
* Grabs the ni data from the ni structure and fills the out
|
|
* parameters
|
|
*
|
|
* \param[in] ni network interface structure
|
|
* \param[out] cpt_count the number of cpts the ni is on
|
|
* \param[out] nid Network Interface ID
|
|
* \param[out] peer_timeout NI peer timeout
|
|
* \param[out] peer_tx_crdits NI peer transmit credits
|
|
* \param[out] peer_rtr_credits NI peer router credits
|
|
* \param[out] max_tx_credits NI max transmit credit
|
|
* \param[out] net_config Network configuration
|
|
*/
|
|
static void
|
|
lnet_fill_ni_info(struct lnet_ni *ni, __u32 *cpt_count, __u64 *nid,
|
|
int *peer_timeout, int *peer_tx_credits,
|
|
int *peer_rtr_credits, int *max_tx_credits,
|
|
struct lnet_ioctl_net_config *net_config)
|
|
{
|
|
int i;
|
|
|
|
if (!ni)
|
|
return;
|
|
|
|
if (!net_config)
|
|
return;
|
|
|
|
BUILD_BUG_ON(ARRAY_SIZE(ni->ni_interfaces) !=
|
|
ARRAY_SIZE(net_config->ni_interfaces));
|
|
|
|
for (i = 0; i < ARRAY_SIZE(ni->ni_interfaces); i++) {
|
|
if (!ni->ni_interfaces[i])
|
|
break;
|
|
|
|
strncpy(net_config->ni_interfaces[i],
|
|
ni->ni_interfaces[i],
|
|
sizeof(net_config->ni_interfaces[i]));
|
|
}
|
|
|
|
*nid = ni->ni_nid;
|
|
*peer_timeout = ni->ni_peertimeout;
|
|
*peer_tx_credits = ni->ni_peertxcredits;
|
|
*peer_rtr_credits = ni->ni_peerrtrcredits;
|
|
*max_tx_credits = ni->ni_maxtxcredits;
|
|
|
|
net_config->ni_status = ni->ni_status->ns_status;
|
|
|
|
if (ni->ni_cpts) {
|
|
int num_cpts = min(ni->ni_ncpts, LNET_MAX_SHOW_NUM_CPT);
|
|
|
|
for (i = 0; i < num_cpts; i++)
|
|
net_config->ni_cpts[i] = ni->ni_cpts[i];
|
|
|
|
*cpt_count = num_cpts;
|
|
}
|
|
}
|
|
|
|
int
|
|
lnet_get_net_config(int idx, __u32 *cpt_count, __u64 *nid, int *peer_timeout,
|
|
int *peer_tx_credits, int *peer_rtr_credits,
|
|
int *max_tx_credits,
|
|
struct lnet_ioctl_net_config *net_config)
|
|
{
|
|
struct lnet_ni *ni;
|
|
struct list_head *tmp;
|
|
int cpt, i = 0;
|
|
int rc = -ENOENT;
|
|
|
|
cpt = lnet_net_lock_current();
|
|
|
|
list_for_each(tmp, &the_lnet.ln_nis) {
|
|
if (i++ != idx)
|
|
continue;
|
|
|
|
ni = list_entry(tmp, lnet_ni_t, ni_list);
|
|
lnet_ni_lock(ni);
|
|
lnet_fill_ni_info(ni, cpt_count, nid, peer_timeout,
|
|
peer_tx_credits, peer_rtr_credits,
|
|
max_tx_credits, net_config);
|
|
lnet_ni_unlock(ni);
|
|
rc = 0;
|
|
break;
|
|
}
|
|
|
|
lnet_net_unlock(cpt);
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
lnet_dyn_add_ni(lnet_pid_t requested_pid, char *nets,
|
|
__s32 peer_timeout, __s32 peer_cr, __s32 peer_buf_cr,
|
|
__s32 credits)
|
|
{
|
|
lnet_ping_info_t *pinfo;
|
|
lnet_handle_md_t md_handle;
|
|
struct lnet_ni *ni;
|
|
struct list_head net_head;
|
|
lnet_remotenet_t *rnet;
|
|
int rc;
|
|
|
|
INIT_LIST_HEAD(&net_head);
|
|
|
|
/* Create a ni structure for the network string */
|
|
rc = lnet_parse_networks(&net_head, nets);
|
|
if (rc <= 0)
|
|
return !rc ? -EINVAL : rc;
|
|
|
|
mutex_lock(&the_lnet.ln_api_mutex);
|
|
|
|
if (rc > 1) {
|
|
rc = -EINVAL; /* only add one interface per call */
|
|
goto failed0;
|
|
}
|
|
|
|
ni = list_entry(net_head.next, struct lnet_ni, ni_list);
|
|
|
|
lnet_net_lock(LNET_LOCK_EX);
|
|
rnet = lnet_find_net_locked(LNET_NIDNET(ni->ni_nid));
|
|
lnet_net_unlock(LNET_LOCK_EX);
|
|
/*
|
|
* make sure that the net added doesn't invalidate the current
|
|
* configuration LNet is keeping
|
|
*/
|
|
if (rnet) {
|
|
CERROR("Adding net %s will invalidate routing configuration\n",
|
|
nets);
|
|
rc = -EUSERS;
|
|
goto failed0;
|
|
}
|
|
|
|
rc = lnet_ping_info_setup(&pinfo, &md_handle, 1 + lnet_get_ni_count(),
|
|
false);
|
|
if (rc)
|
|
goto failed0;
|
|
|
|
list_del_init(&ni->ni_list);
|
|
|
|
rc = lnet_startup_lndni(ni, peer_timeout, peer_cr,
|
|
peer_buf_cr, credits);
|
|
if (rc)
|
|
goto failed1;
|
|
|
|
if (ni->ni_lnd->lnd_accept) {
|
|
rc = lnet_acceptor_start();
|
|
if (rc < 0) {
|
|
/* shutdown the ni that we just started */
|
|
CERROR("Failed to start up acceptor thread\n");
|
|
lnet_shutdown_lndni(ni);
|
|
goto failed1;
|
|
}
|
|
}
|
|
|
|
lnet_ping_target_update(pinfo, md_handle);
|
|
mutex_unlock(&the_lnet.ln_api_mutex);
|
|
|
|
return 0;
|
|
|
|
failed1:
|
|
lnet_ping_md_unlink(pinfo, &md_handle);
|
|
lnet_ping_info_free(pinfo);
|
|
failed0:
|
|
mutex_unlock(&the_lnet.ln_api_mutex);
|
|
while (!list_empty(&net_head)) {
|
|
ni = list_entry(net_head.next, struct lnet_ni, ni_list);
|
|
list_del_init(&ni->ni_list);
|
|
lnet_ni_free(ni);
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
lnet_dyn_del_ni(__u32 net)
|
|
{
|
|
lnet_ni_t *ni;
|
|
lnet_ping_info_t *pinfo;
|
|
lnet_handle_md_t md_handle;
|
|
int rc;
|
|
|
|
/* don't allow userspace to shutdown the LOLND */
|
|
if (LNET_NETTYP(net) == LOLND)
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&the_lnet.ln_api_mutex);
|
|
/* create and link a new ping info, before removing the old one */
|
|
rc = lnet_ping_info_setup(&pinfo, &md_handle,
|
|
lnet_get_ni_count() - 1, false);
|
|
if (rc)
|
|
goto out;
|
|
|
|
ni = lnet_net2ni(net);
|
|
if (!ni) {
|
|
rc = -EINVAL;
|
|
goto failed;
|
|
}
|
|
|
|
/* decrement the reference counter taken by lnet_net2ni() */
|
|
lnet_ni_decref_locked(ni, 0);
|
|
|
|
lnet_shutdown_lndni(ni);
|
|
|
|
if (!lnet_count_acceptor_nis())
|
|
lnet_acceptor_stop();
|
|
|
|
lnet_ping_target_update(pinfo, md_handle);
|
|
goto out;
|
|
failed:
|
|
lnet_ping_md_unlink(pinfo, &md_handle);
|
|
lnet_ping_info_free(pinfo);
|
|
out:
|
|
mutex_unlock(&the_lnet.ln_api_mutex);
|
|
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* LNet ioctl handler.
|
|
*
|
|
*/
|
|
int
|
|
LNetCtl(unsigned int cmd, void *arg)
|
|
{
|
|
struct libcfs_ioctl_data *data = arg;
|
|
struct lnet_ioctl_config_data *config;
|
|
lnet_process_id_t id = {0};
|
|
lnet_ni_t *ni;
|
|
int rc;
|
|
unsigned long secs_passed;
|
|
|
|
switch (cmd) {
|
|
case IOC_LIBCFS_GET_NI:
|
|
rc = LNetGetId(data->ioc_count, &id);
|
|
data->ioc_nid = id.nid;
|
|
return rc;
|
|
|
|
case IOC_LIBCFS_FAIL_NID:
|
|
return lnet_fail_nid(data->ioc_nid, data->ioc_count);
|
|
|
|
case IOC_LIBCFS_ADD_ROUTE:
|
|
config = arg;
|
|
|
|
if (config->cfg_hdr.ioc_len < sizeof(*config))
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&the_lnet.ln_api_mutex);
|
|
rc = lnet_add_route(config->cfg_net,
|
|
config->cfg_config_u.cfg_route.rtr_hop,
|
|
config->cfg_nid,
|
|
config->cfg_config_u.cfg_route.rtr_priority);
|
|
if (!rc) {
|
|
rc = lnet_check_routes();
|
|
if (rc)
|
|
lnet_del_route(config->cfg_net,
|
|
config->cfg_nid);
|
|
}
|
|
mutex_unlock(&the_lnet.ln_api_mutex);
|
|
return rc;
|
|
|
|
case IOC_LIBCFS_DEL_ROUTE:
|
|
config = arg;
|
|
|
|
if (config->cfg_hdr.ioc_len < sizeof(*config))
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&the_lnet.ln_api_mutex);
|
|
rc = lnet_del_route(config->cfg_net, config->cfg_nid);
|
|
mutex_unlock(&the_lnet.ln_api_mutex);
|
|
return rc;
|
|
|
|
case IOC_LIBCFS_GET_ROUTE:
|
|
config = arg;
|
|
|
|
if (config->cfg_hdr.ioc_len < sizeof(*config))
|
|
return -EINVAL;
|
|
|
|
return lnet_get_route(config->cfg_count,
|
|
&config->cfg_net,
|
|
&config->cfg_config_u.cfg_route.rtr_hop,
|
|
&config->cfg_nid,
|
|
&config->cfg_config_u.cfg_route.rtr_flags,
|
|
&config->cfg_config_u.cfg_route.rtr_priority);
|
|
|
|
case IOC_LIBCFS_GET_NET: {
|
|
struct lnet_ioctl_net_config *net_config;
|
|
size_t total = sizeof(*config) + sizeof(*net_config);
|
|
|
|
config = arg;
|
|
|
|
if (config->cfg_hdr.ioc_len < total)
|
|
return -EINVAL;
|
|
|
|
net_config = (struct lnet_ioctl_net_config *)
|
|
config->cfg_bulk;
|
|
if (!net_config)
|
|
return -EINVAL;
|
|
|
|
return lnet_get_net_config(config->cfg_count,
|
|
&config->cfg_ncpts,
|
|
&config->cfg_nid,
|
|
&config->cfg_config_u.cfg_net.net_peer_timeout,
|
|
&config->cfg_config_u.cfg_net.net_peer_tx_credits,
|
|
&config->cfg_config_u.cfg_net.net_peer_rtr_credits,
|
|
&config->cfg_config_u.cfg_net.net_max_tx_credits,
|
|
net_config);
|
|
}
|
|
|
|
case IOC_LIBCFS_GET_LNET_STATS: {
|
|
struct lnet_ioctl_lnet_stats *lnet_stats = arg;
|
|
|
|
if (lnet_stats->st_hdr.ioc_len < sizeof(*lnet_stats))
|
|
return -EINVAL;
|
|
|
|
lnet_counters_get(&lnet_stats->st_cntrs);
|
|
return 0;
|
|
}
|
|
|
|
case IOC_LIBCFS_CONFIG_RTR:
|
|
config = arg;
|
|
|
|
if (config->cfg_hdr.ioc_len < sizeof(*config))
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&the_lnet.ln_api_mutex);
|
|
if (config->cfg_config_u.cfg_buffers.buf_enable) {
|
|
rc = lnet_rtrpools_enable();
|
|
mutex_unlock(&the_lnet.ln_api_mutex);
|
|
return rc;
|
|
}
|
|
lnet_rtrpools_disable();
|
|
mutex_unlock(&the_lnet.ln_api_mutex);
|
|
return 0;
|
|
|
|
case IOC_LIBCFS_ADD_BUF:
|
|
config = arg;
|
|
|
|
if (config->cfg_hdr.ioc_len < sizeof(*config))
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&the_lnet.ln_api_mutex);
|
|
rc = lnet_rtrpools_adjust(config->cfg_config_u.cfg_buffers.buf_tiny,
|
|
config->cfg_config_u.cfg_buffers.buf_small,
|
|
config->cfg_config_u.cfg_buffers.buf_large);
|
|
mutex_unlock(&the_lnet.ln_api_mutex);
|
|
return rc;
|
|
|
|
case IOC_LIBCFS_GET_BUF: {
|
|
struct lnet_ioctl_pool_cfg *pool_cfg;
|
|
size_t total = sizeof(*config) + sizeof(*pool_cfg);
|
|
|
|
config = arg;
|
|
|
|
if (config->cfg_hdr.ioc_len < total)
|
|
return -EINVAL;
|
|
|
|
pool_cfg = (struct lnet_ioctl_pool_cfg *)config->cfg_bulk;
|
|
return lnet_get_rtr_pool_cfg(config->cfg_count, pool_cfg);
|
|
}
|
|
|
|
case IOC_LIBCFS_GET_PEER_INFO: {
|
|
struct lnet_ioctl_peer *peer_info = arg;
|
|
|
|
if (peer_info->pr_hdr.ioc_len < sizeof(*peer_info))
|
|
return -EINVAL;
|
|
|
|
return lnet_get_peer_info(peer_info->pr_count,
|
|
&peer_info->pr_nid,
|
|
peer_info->pr_lnd_u.pr_peer_credits.cr_aliveness,
|
|
&peer_info->pr_lnd_u.pr_peer_credits.cr_ncpt,
|
|
&peer_info->pr_lnd_u.pr_peer_credits.cr_refcount,
|
|
&peer_info->pr_lnd_u.pr_peer_credits.cr_ni_peer_tx_credits,
|
|
&peer_info->pr_lnd_u.pr_peer_credits.cr_peer_tx_credits,
|
|
&peer_info->pr_lnd_u.pr_peer_credits.cr_peer_rtr_credits,
|
|
&peer_info->pr_lnd_u.pr_peer_credits.cr_peer_min_rtr_credits,
|
|
&peer_info->pr_lnd_u.pr_peer_credits.cr_peer_tx_qnob);
|
|
}
|
|
|
|
case IOC_LIBCFS_NOTIFY_ROUTER:
|
|
secs_passed = (ktime_get_real_seconds() - data->ioc_u64[0]);
|
|
secs_passed *= msecs_to_jiffies(MSEC_PER_SEC);
|
|
|
|
return lnet_notify(NULL, data->ioc_nid, data->ioc_flags,
|
|
jiffies - secs_passed);
|
|
|
|
case IOC_LIBCFS_LNET_DIST:
|
|
rc = LNetDist(data->ioc_nid, &data->ioc_nid, &data->ioc_u32[1]);
|
|
if (rc < 0 && rc != -EHOSTUNREACH)
|
|
return rc;
|
|
|
|
data->ioc_u32[0] = rc;
|
|
return 0;
|
|
|
|
case IOC_LIBCFS_TESTPROTOCOMPAT:
|
|
lnet_net_lock(LNET_LOCK_EX);
|
|
the_lnet.ln_testprotocompat = data->ioc_flags;
|
|
lnet_net_unlock(LNET_LOCK_EX);
|
|
return 0;
|
|
|
|
case IOC_LIBCFS_LNET_FAULT:
|
|
return lnet_fault_ctl(data->ioc_flags, data);
|
|
|
|
case IOC_LIBCFS_PING:
|
|
id.nid = data->ioc_nid;
|
|
id.pid = data->ioc_u32[0];
|
|
rc = lnet_ping(id, data->ioc_u32[1], /* timeout */
|
|
data->ioc_pbuf1,
|
|
data->ioc_plen1 / sizeof(lnet_process_id_t));
|
|
if (rc < 0)
|
|
return rc;
|
|
data->ioc_count = rc;
|
|
return 0;
|
|
|
|
default:
|
|
ni = lnet_net2ni(data->ioc_net);
|
|
if (!ni)
|
|
return -EINVAL;
|
|
|
|
if (!ni->ni_lnd->lnd_ctl)
|
|
rc = -EINVAL;
|
|
else
|
|
rc = ni->ni_lnd->lnd_ctl(ni, cmd, arg);
|
|
|
|
lnet_ni_decref(ni);
|
|
return rc;
|
|
}
|
|
/* not reached */
|
|
}
|
|
EXPORT_SYMBOL(LNetCtl);
|
|
|
|
void LNetDebugPeer(lnet_process_id_t id)
|
|
{
|
|
lnet_debug_peer(id.nid);
|
|
}
|
|
EXPORT_SYMBOL(LNetDebugPeer);
|
|
|
|
/**
|
|
* Retrieve the lnet_process_id_t ID of LNet interface at \a index. Note that
|
|
* all interfaces share a same PID, as requested by LNetNIInit().
|
|
*
|
|
* \param index Index of the interface to look up.
|
|
* \param id On successful return, this location will hold the
|
|
* lnet_process_id_t ID of the interface.
|
|
*
|
|
* \retval 0 If an interface exists at \a index.
|
|
* \retval -ENOENT If no interface has been found.
|
|
*/
|
|
int
|
|
LNetGetId(unsigned int index, lnet_process_id_t *id)
|
|
{
|
|
struct lnet_ni *ni;
|
|
struct list_head *tmp;
|
|
int cpt;
|
|
int rc = -ENOENT;
|
|
|
|
LASSERT(the_lnet.ln_refcount > 0);
|
|
|
|
cpt = lnet_net_lock_current();
|
|
|
|
list_for_each(tmp, &the_lnet.ln_nis) {
|
|
if (index--)
|
|
continue;
|
|
|
|
ni = list_entry(tmp, lnet_ni_t, ni_list);
|
|
|
|
id->nid = ni->ni_nid;
|
|
id->pid = the_lnet.ln_pid;
|
|
rc = 0;
|
|
break;
|
|
}
|
|
|
|
lnet_net_unlock(cpt);
|
|
return rc;
|
|
}
|
|
EXPORT_SYMBOL(LNetGetId);
|
|
|
|
/**
|
|
* Print a string representation of handle \a h into buffer \a str of
|
|
* \a len bytes.
|
|
*/
|
|
void
|
|
LNetSnprintHandle(char *str, int len, lnet_handle_any_t h)
|
|
{
|
|
snprintf(str, len, "%#llx", h.cookie);
|
|
}
|
|
EXPORT_SYMBOL(LNetSnprintHandle);
|
|
|
|
static int lnet_ping(lnet_process_id_t id, int timeout_ms,
|
|
lnet_process_id_t __user *ids, int n_ids)
|
|
{
|
|
lnet_handle_eq_t eqh;
|
|
lnet_handle_md_t mdh;
|
|
lnet_event_t event;
|
|
lnet_md_t md = { NULL };
|
|
int which;
|
|
int unlinked = 0;
|
|
int replied = 0;
|
|
const int a_long_time = 60000; /* mS */
|
|
int infosz;
|
|
lnet_ping_info_t *info;
|
|
lnet_process_id_t tmpid;
|
|
int i;
|
|
int nob;
|
|
int rc;
|
|
int rc2;
|
|
sigset_t blocked;
|
|
|
|
infosz = offsetof(lnet_ping_info_t, pi_ni[n_ids]);
|
|
|
|
if (n_ids <= 0 ||
|
|
id.nid == LNET_NID_ANY ||
|
|
timeout_ms > 500000 || /* arbitrary limit! */
|
|
n_ids > 20) /* arbitrary limit! */
|
|
return -EINVAL;
|
|
|
|
if (id.pid == LNET_PID_ANY)
|
|
id.pid = LNET_PID_LUSTRE;
|
|
|
|
LIBCFS_ALLOC(info, infosz);
|
|
if (!info)
|
|
return -ENOMEM;
|
|
|
|
/* NB 2 events max (including any unlink event) */
|
|
rc = LNetEQAlloc(2, LNET_EQ_HANDLER_NONE, &eqh);
|
|
if (rc) {
|
|
CERROR("Can't allocate EQ: %d\n", rc);
|
|
goto out_0;
|
|
}
|
|
|
|
/* initialize md content */
|
|
md.start = info;
|
|
md.length = infosz;
|
|
md.threshold = 2; /*GET/REPLY*/
|
|
md.max_size = 0;
|
|
md.options = LNET_MD_TRUNCATE;
|
|
md.user_ptr = NULL;
|
|
md.eq_handle = eqh;
|
|
|
|
rc = LNetMDBind(md, LNET_UNLINK, &mdh);
|
|
if (rc) {
|
|
CERROR("Can't bind MD: %d\n", rc);
|
|
goto out_1;
|
|
}
|
|
|
|
rc = LNetGet(LNET_NID_ANY, mdh, id,
|
|
LNET_RESERVED_PORTAL,
|
|
LNET_PROTO_PING_MATCHBITS, 0);
|
|
|
|
if (rc) {
|
|
/* Don't CERROR; this could be deliberate! */
|
|
|
|
rc2 = LNetMDUnlink(mdh);
|
|
LASSERT(!rc2);
|
|
|
|
/* NB must wait for the UNLINK event below... */
|
|
unlinked = 1;
|
|
timeout_ms = a_long_time;
|
|
}
|
|
|
|
do {
|
|
/* MUST block for unlink to complete */
|
|
if (unlinked)
|
|
blocked = cfs_block_allsigs();
|
|
|
|
rc2 = LNetEQPoll(&eqh, 1, timeout_ms, &event, &which);
|
|
|
|
if (unlinked)
|
|
cfs_restore_sigs(blocked);
|
|
|
|
CDEBUG(D_NET, "poll %d(%d %d)%s\n", rc2,
|
|
(rc2 <= 0) ? -1 : event.type,
|
|
(rc2 <= 0) ? -1 : event.status,
|
|
(rc2 > 0 && event.unlinked) ? " unlinked" : "");
|
|
|
|
LASSERT(rc2 != -EOVERFLOW); /* can't miss anything */
|
|
|
|
if (rc2 <= 0 || event.status) {
|
|
/* timeout or error */
|
|
if (!replied && !rc)
|
|
rc = (rc2 < 0) ? rc2 :
|
|
!rc2 ? -ETIMEDOUT :
|
|
event.status;
|
|
|
|
if (!unlinked) {
|
|
/* Ensure completion in finite time... */
|
|
LNetMDUnlink(mdh);
|
|
/* No assertion (racing with network) */
|
|
unlinked = 1;
|
|
timeout_ms = a_long_time;
|
|
} else if (!rc2) {
|
|
/* timed out waiting for unlink */
|
|
CWARN("ping %s: late network completion\n",
|
|
libcfs_id2str(id));
|
|
}
|
|
} else if (event.type == LNET_EVENT_REPLY) {
|
|
replied = 1;
|
|
rc = event.mlength;
|
|
}
|
|
|
|
} while (rc2 <= 0 || !event.unlinked);
|
|
|
|
if (!replied) {
|
|
if (rc >= 0)
|
|
CWARN("%s: Unexpected rc >= 0 but no reply!\n",
|
|
libcfs_id2str(id));
|
|
rc = -EIO;
|
|
goto out_1;
|
|
}
|
|
|
|
nob = rc;
|
|
LASSERT(nob >= 0 && nob <= infosz);
|
|
|
|
rc = -EPROTO; /* if I can't parse... */
|
|
|
|
if (nob < 8) {
|
|
/* can't check magic/version */
|
|
CERROR("%s: ping info too short %d\n",
|
|
libcfs_id2str(id), nob);
|
|
goto out_1;
|
|
}
|
|
|
|
if (info->pi_magic == __swab32(LNET_PROTO_PING_MAGIC)) {
|
|
lnet_swap_pinginfo(info);
|
|
} else if (info->pi_magic != LNET_PROTO_PING_MAGIC) {
|
|
CERROR("%s: Unexpected magic %08x\n",
|
|
libcfs_id2str(id), info->pi_magic);
|
|
goto out_1;
|
|
}
|
|
|
|
if (!(info->pi_features & LNET_PING_FEAT_NI_STATUS)) {
|
|
CERROR("%s: ping w/o NI status: 0x%x\n",
|
|
libcfs_id2str(id), info->pi_features);
|
|
goto out_1;
|
|
}
|
|
|
|
if (nob < offsetof(lnet_ping_info_t, pi_ni[0])) {
|
|
CERROR("%s: Short reply %d(%d min)\n", libcfs_id2str(id),
|
|
nob, (int)offsetof(lnet_ping_info_t, pi_ni[0]));
|
|
goto out_1;
|
|
}
|
|
|
|
if (info->pi_nnis < n_ids)
|
|
n_ids = info->pi_nnis;
|
|
|
|
if (nob < offsetof(lnet_ping_info_t, pi_ni[n_ids])) {
|
|
CERROR("%s: Short reply %d(%d expected)\n", libcfs_id2str(id),
|
|
nob, (int)offsetof(lnet_ping_info_t, pi_ni[n_ids]));
|
|
goto out_1;
|
|
}
|
|
|
|
rc = -EFAULT; /* If I SEGV... */
|
|
|
|
memset(&tmpid, 0, sizeof(tmpid));
|
|
for (i = 0; i < n_ids; i++) {
|
|
tmpid.pid = info->pi_pid;
|
|
tmpid.nid = info->pi_ni[i].ns_nid;
|
|
if (copy_to_user(&ids[i], &tmpid, sizeof(tmpid)))
|
|
goto out_1;
|
|
}
|
|
rc = info->pi_nnis;
|
|
|
|
out_1:
|
|
rc2 = LNetEQFree(eqh);
|
|
if (rc2)
|
|
CERROR("rc2 %d\n", rc2);
|
|
LASSERT(!rc2);
|
|
|
|
out_0:
|
|
LIBCFS_FREE(info, infosz);
|
|
return rc;
|
|
}
|