4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
32 #define DEBUG_SUBSYSTEM S_LNET
34 #include <linux/ctype.h>
35 #include <linux/generic-radix-tree.h>
36 #include <linux/log2.h>
37 #include <linux/ktime.h>
38 #include <linux/moduleparam.h>
39 #include <linux/uaccess.h>
40 #ifdef HAVE_SCHED_HEADERS
41 #include <linux/sched/signal.h>
43 #include <net/genetlink.h>
45 #include <libcfs/linux/linux-net.h>
46 #include <lnet/udsp.h>
47 #include <lnet/lib-lnet.h>
49 #define D_LNI D_CONSOLE
52 * initialize ln_api_mutex statically, since it needs to be used in
53 * discovery_set callback. That module parameter callback can be called
54 * before module init completes. The mutex needs to be ready for use then.
56 struct lnet the_lnet = {
57 .ln_api_mutex = __MUTEX_INITIALIZER(the_lnet.ln_api_mutex),
58 }; /* THE state of the network */
59 EXPORT_SYMBOL(the_lnet);
61 static char *ip2nets = "";
62 module_param(ip2nets, charp, 0444);
63 MODULE_PARM_DESC(ip2nets, "LNET network <- IP table");
65 static char *networks = "";
66 module_param(networks, charp, 0444);
67 MODULE_PARM_DESC(networks, "local networks");
69 static char *routes = "";
70 module_param(routes, charp, 0444);
71 MODULE_PARM_DESC(routes, "routes to non-local networks");
73 static int rnet_htable_size = LNET_REMOTE_NETS_HASH_DEFAULT;
74 module_param(rnet_htable_size, int, 0444);
75 MODULE_PARM_DESC(rnet_htable_size, "size of remote network hash table");
77 static int use_tcp_bonding;
78 module_param(use_tcp_bonding, int, 0444);
79 MODULE_PARM_DESC(use_tcp_bonding,
80 "use_tcp_bonding parameter has been removed");
82 unsigned int lnet_numa_range = 0;
83 module_param(lnet_numa_range, uint, 0444);
84 MODULE_PARM_DESC(lnet_numa_range,
85 "NUMA range to consider during Multi-Rail selection");
88 * lnet_health_sensitivity determines by how much we decrement the health
89 * value on sending error. The value defaults to 100, which means health
90 * interface health is decremented by 100 points every failure.
92 unsigned int lnet_health_sensitivity = 100;
93 static int sensitivity_set(const char *val, cfs_kernel_param_arg_t *kp);
94 #ifdef HAVE_KERNEL_PARAM_OPS
95 static struct kernel_param_ops param_ops_health_sensitivity = {
96 .set = sensitivity_set,
99 #define param_check_health_sensitivity(name, p) \
100 __param_check(name, p, int)
101 module_param(lnet_health_sensitivity, health_sensitivity, S_IRUGO|S_IWUSR);
103 module_param_call(lnet_health_sensitivity, sensitivity_set, param_get_int,
104 &lnet_health_sensitivity, S_IRUGO|S_IWUSR);
106 MODULE_PARM_DESC(lnet_health_sensitivity,
107 "Value to decrement the health value by on error");
110 * lnet_recovery_interval determines how often we should perform recovery
111 * on unhealthy interfaces.
113 unsigned int lnet_recovery_interval = 1;
114 static int recovery_interval_set(const char *val, cfs_kernel_param_arg_t *kp);
115 #ifdef HAVE_KERNEL_PARAM_OPS
116 static struct kernel_param_ops param_ops_recovery_interval = {
117 .set = recovery_interval_set,
118 .get = param_get_int,
120 #define param_check_recovery_interval(name, p) \
121 __param_check(name, p, int)
122 module_param(lnet_recovery_interval, recovery_interval, S_IRUGO|S_IWUSR);
124 module_param_call(lnet_recovery_interval, recovery_interval_set, param_get_int,
125 &lnet_recovery_interval, S_IRUGO|S_IWUSR);
127 MODULE_PARM_DESC(lnet_recovery_interval,
128 "DEPRECATED - Interval to recover unhealthy interfaces in seconds");
130 unsigned int lnet_recovery_limit;
131 module_param(lnet_recovery_limit, uint, 0644);
132 MODULE_PARM_DESC(lnet_recovery_limit,
133 "How long to attempt recovery of unhealthy peer interfaces in seconds. Set to 0 to allow indefinite recovery");
135 unsigned int lnet_max_recovery_ping_interval = 900;
136 unsigned int lnet_max_recovery_ping_count = 9;
137 static int max_recovery_ping_interval_set(const char *val,
138 cfs_kernel_param_arg_t *kp);
140 #define param_check_max_recovery_ping_interval(name, p) \
141 __param_check(name, p, int)
143 #ifdef HAVE_KERNEL_PARAM_OPS
144 static struct kernel_param_ops param_ops_max_recovery_ping_interval = {
145 .set = max_recovery_ping_interval_set,
146 .get = param_get_int,
148 module_param(lnet_max_recovery_ping_interval, max_recovery_ping_interval, 0644);
150 module_param_call(lnet_max_recovery_ping_interval, max_recovery_ping_interval,
151 param_get_int, &lnet_max_recovery_ping_interval, 0644);
153 MODULE_PARM_DESC(lnet_max_recovery_ping_interval,
154 "The max interval between LNet recovery pings, in seconds");
156 static int lnet_interfaces_max = LNET_INTERFACES_MAX_DEFAULT;
157 static int intf_max_set(const char *val, cfs_kernel_param_arg_t *kp);
159 static struct kernel_param_ops param_ops_interfaces_max = {
161 .get = param_get_int,
164 #define param_check_interfaces_max(name, p) \
165 __param_check(name, p, int)
167 #ifdef HAVE_KERNEL_PARAM_OPS
168 module_param(lnet_interfaces_max, interfaces_max, 0644);
170 module_param_call(lnet_interfaces_max, intf_max_set, param_get_int,
171 ¶m_ops_interfaces_max, 0644);
173 MODULE_PARM_DESC(lnet_interfaces_max,
174 "Maximum number of interfaces in a node.");
176 unsigned lnet_peer_discovery_disabled = 0;
177 static int discovery_set(const char *val, cfs_kernel_param_arg_t *kp);
179 static struct kernel_param_ops param_ops_discovery_disabled = {
180 .set = discovery_set,
181 .get = param_get_int,
184 #define param_check_discovery_disabled(name, p) \
185 __param_check(name, p, int)
186 #ifdef HAVE_KERNEL_PARAM_OPS
187 module_param(lnet_peer_discovery_disabled, discovery_disabled, 0644);
189 module_param_call(lnet_peer_discovery_disabled, discovery_set, param_get_int,
190 ¶m_ops_discovery_disabled, 0644);
192 MODULE_PARM_DESC(lnet_peer_discovery_disabled,
193 "Set to 1 to disable peer discovery on this node.");
195 unsigned int lnet_drop_asym_route;
196 static int drop_asym_route_set(const char *val, cfs_kernel_param_arg_t *kp);
198 static struct kernel_param_ops param_ops_drop_asym_route = {
199 .set = drop_asym_route_set,
200 .get = param_get_int,
203 #define param_check_drop_asym_route(name, p) \
204 __param_check(name, p, int)
205 #ifdef HAVE_KERNEL_PARAM_OPS
206 module_param(lnet_drop_asym_route, drop_asym_route, 0644);
208 module_param_call(lnet_drop_asym_route, drop_asym_route_set, param_get_int,
209 ¶m_ops_drop_asym_route, 0644);
211 MODULE_PARM_DESC(lnet_drop_asym_route,
212 "Set to 1 to drop asymmetrical route messages.");
214 #define LNET_TRANSACTION_TIMEOUT_DEFAULT 150
215 unsigned int lnet_transaction_timeout = LNET_TRANSACTION_TIMEOUT_DEFAULT;
216 static int transaction_to_set(const char *val, cfs_kernel_param_arg_t *kp);
217 #ifdef HAVE_KERNEL_PARAM_OPS
218 static struct kernel_param_ops param_ops_transaction_timeout = {
219 .set = transaction_to_set,
220 .get = param_get_int,
223 #define param_check_transaction_timeout(name, p) \
224 __param_check(name, p, int)
225 module_param(lnet_transaction_timeout, transaction_timeout, S_IRUGO|S_IWUSR);
227 module_param_call(lnet_transaction_timeout, transaction_to_set, param_get_int,
228 &lnet_transaction_timeout, S_IRUGO|S_IWUSR);
230 MODULE_PARM_DESC(lnet_transaction_timeout,
231 "Maximum number of seconds to wait for a peer response.");
233 #define LNET_RETRY_COUNT_DEFAULT 2
234 unsigned int lnet_retry_count = LNET_RETRY_COUNT_DEFAULT;
235 static int retry_count_set(const char *val, cfs_kernel_param_arg_t *kp);
236 #ifdef HAVE_KERNEL_PARAM_OPS
237 static struct kernel_param_ops param_ops_retry_count = {
238 .set = retry_count_set,
239 .get = param_get_int,
242 #define param_check_retry_count(name, p) \
243 __param_check(name, p, int)
244 module_param(lnet_retry_count, retry_count, S_IRUGO|S_IWUSR);
246 module_param_call(lnet_retry_count, retry_count_set, param_get_int,
247 &lnet_retry_count, S_IRUGO|S_IWUSR);
249 MODULE_PARM_DESC(lnet_retry_count,
250 "Maximum number of times to retry transmitting a message");
252 unsigned int lnet_response_tracking = 3;
253 static int response_tracking_set(const char *val, cfs_kernel_param_arg_t *kp);
255 #ifdef HAVE_KERNEL_PARAM_OPS
256 static struct kernel_param_ops param_ops_response_tracking = {
257 .set = response_tracking_set,
258 .get = param_get_int,
261 #define param_check_response_tracking(name, p) \
262 __param_check(name, p, int)
263 module_param(lnet_response_tracking, response_tracking, 0644);
265 module_param_call(lnet_response_tracking, response_tracking_set, param_get_int,
266 &lnet_response_tracking, 0644);
268 MODULE_PARM_DESC(lnet_response_tracking,
269 "(0|1|2|3) LNet Internal Only|GET Reply only|PUT ACK only|Full Tracking (default)");
271 int lock_prim_nid = 1;
272 module_param(lock_prim_nid, int, 0444);
273 MODULE_PARM_DESC(lock_prim_nid,
274 "Whether nid passed down by Lustre is locked as primary");
276 #define LNET_LND_TIMEOUT_DEFAULT ((LNET_TRANSACTION_TIMEOUT_DEFAULT - 1) / \
277 (LNET_RETRY_COUNT_DEFAULT + 1))
278 unsigned int lnet_lnd_timeout = LNET_LND_TIMEOUT_DEFAULT;
279 static void lnet_set_lnd_timeout(void)
281 lnet_lnd_timeout = max((lnet_transaction_timeout - 1) /
282 (lnet_retry_count + 1), 1U);
286 * This sequence number keeps track of how many times DLC was used to
287 * update the local NIs. It is incremented when a NI is added or
288 * removed and checked when sending a message to determine if there is
289 * a need to re-run the selection algorithm. See lnet_select_pathway()
290 * for more details on its usage.
292 static atomic_t lnet_dlc_seq_no = ATOMIC_INIT(0);
294 struct lnet_fail_ping {
295 struct lnet_processid lfp_id;
300 struct lnet_genl_ping_list {
301 unsigned int lgpl_index;
302 unsigned int lgpl_list_count;
303 unsigned int lgpl_failed_count;
304 signed long lgpl_timeout;
305 struct lnet_nid lgpl_src_nid;
306 GENRADIX(struct lnet_fail_ping) lgpl_failed;
307 GENRADIX(struct lnet_processid) lgpl_list;
310 static int lnet_ping(struct lnet_processid *id, struct lnet_nid *src_nid,
311 signed long timeout, struct lnet_genl_ping_list *plist,
314 static int lnet_discover(struct lnet_processid *id, u32 force,
315 struct lnet_genl_ping_list *dlists);
318 sensitivity_set(const char *val, cfs_kernel_param_arg_t *kp)
321 unsigned *sensitivity = (unsigned *)kp->arg;
324 rc = kstrtoul(val, 0, &value);
326 CERROR("Invalid module parameter value for 'lnet_health_sensitivity'\n");
331 * The purpose of locking the api_mutex here is to ensure that
332 * the correct value ends up stored properly.
334 mutex_lock(&the_lnet.ln_api_mutex);
336 if (value > LNET_MAX_HEALTH_VALUE) {
337 mutex_unlock(&the_lnet.ln_api_mutex);
338 CERROR("Invalid health value. Maximum: %d value = %lu\n",
339 LNET_MAX_HEALTH_VALUE, value);
343 if (*sensitivity != 0 && value == 0 && lnet_retry_count != 0) {
344 lnet_retry_count = 0;
345 lnet_set_lnd_timeout();
348 *sensitivity = value;
350 mutex_unlock(&the_lnet.ln_api_mutex);
356 recovery_interval_set(const char *val, cfs_kernel_param_arg_t *kp)
358 CWARN("'lnet_recovery_interval' has been deprecated\n");
364 max_recovery_ping_interval_set(const char *val, cfs_kernel_param_arg_t *kp)
369 rc = kstrtoul(val, 0, &value);
371 CERROR("Invalid module parameter value for 'lnet_max_recovery_ping_interval'\n");
376 CERROR("Invalid max ping timeout. Must be strictly positive\n");
380 /* The purpose of locking the api_mutex here is to ensure that
381 * the correct value ends up stored properly.
383 mutex_lock(&the_lnet.ln_api_mutex);
384 lnet_max_recovery_ping_interval = value;
385 lnet_max_recovery_ping_count = 0;
388 lnet_max_recovery_ping_count++;
391 mutex_unlock(&the_lnet.ln_api_mutex);
397 discovery_set(const char *val, cfs_kernel_param_arg_t *kp)
400 unsigned *discovery_off = (unsigned *)kp->arg;
402 struct lnet_ping_buffer *pbuf;
404 rc = kstrtoul(val, 0, &value);
406 CERROR("Invalid module parameter value for 'lnet_peer_discovery_disabled'\n");
410 value = (value) ? 1 : 0;
413 * The purpose of locking the api_mutex here is to ensure that
414 * the correct value ends up stored properly.
416 mutex_lock(&the_lnet.ln_api_mutex);
418 if (value == *discovery_off) {
419 mutex_unlock(&the_lnet.ln_api_mutex);
424 * We still want to set the discovery value even when LNet is not
425 * running. This is the case when LNet is being loaded and we want
426 * the module parameters to take effect. Otherwise if we're
427 * changing the value dynamically, we want to set it after
430 if (the_lnet.ln_state != LNET_STATE_RUNNING) {
431 *discovery_off = value;
432 mutex_unlock(&the_lnet.ln_api_mutex);
436 /* tell peers that discovery setting has changed */
437 lnet_net_lock(LNET_LOCK_EX);
438 pbuf = the_lnet.ln_ping_target;
440 pbuf->pb_info.pi_features &= ~LNET_PING_FEAT_DISCOVERY;
442 pbuf->pb_info.pi_features |= LNET_PING_FEAT_DISCOVERY;
443 lnet_net_unlock(LNET_LOCK_EX);
445 /* only send a push when we're turning off discovery */
446 if (*discovery_off <= 0 && value > 0)
447 lnet_push_update_to_peers(1);
448 *discovery_off = value;
450 mutex_unlock(&the_lnet.ln_api_mutex);
456 drop_asym_route_set(const char *val, cfs_kernel_param_arg_t *kp)
459 unsigned int *drop_asym_route = (unsigned int *)kp->arg;
462 rc = kstrtoul(val, 0, &value);
464 CERROR("Invalid module parameter value for "
465 "'lnet_drop_asym_route'\n");
470 * The purpose of locking the api_mutex here is to ensure that
471 * the correct value ends up stored properly.
473 mutex_lock(&the_lnet.ln_api_mutex);
475 if (value == *drop_asym_route) {
476 mutex_unlock(&the_lnet.ln_api_mutex);
480 *drop_asym_route = value;
482 mutex_unlock(&the_lnet.ln_api_mutex);
488 transaction_to_set(const char *val, cfs_kernel_param_arg_t *kp)
491 unsigned *transaction_to = (unsigned *)kp->arg;
494 rc = kstrtoul(val, 0, &value);
496 CERROR("Invalid module parameter value for 'lnet_transaction_timeout'\n");
501 * The purpose of locking the api_mutex here is to ensure that
502 * the correct value ends up stored properly.
504 mutex_lock(&the_lnet.ln_api_mutex);
506 if (value <= lnet_retry_count || value == 0) {
507 mutex_unlock(&the_lnet.ln_api_mutex);
508 CERROR("Invalid value for lnet_transaction_timeout (%lu). "
509 "Has to be greater than lnet_retry_count (%u)\n",
510 value, lnet_retry_count);
514 if (value == *transaction_to) {
515 mutex_unlock(&the_lnet.ln_api_mutex);
519 *transaction_to = value;
520 /* Update the lnet_lnd_timeout now that we've modified the
521 * transaction timeout
523 lnet_set_lnd_timeout();
525 mutex_unlock(&the_lnet.ln_api_mutex);
531 retry_count_set(const char *val, cfs_kernel_param_arg_t *kp)
534 unsigned *retry_count = (unsigned *)kp->arg;
537 rc = kstrtoul(val, 0, &value);
539 CERROR("Invalid module parameter value for 'lnet_retry_count'\n");
544 * The purpose of locking the api_mutex here is to ensure that
545 * the correct value ends up stored properly.
547 mutex_lock(&the_lnet.ln_api_mutex);
549 if (lnet_health_sensitivity == 0 && value > 0) {
550 mutex_unlock(&the_lnet.ln_api_mutex);
551 CERROR("Can not set lnet_retry_count when health feature is turned off\n");
555 if (value > lnet_transaction_timeout) {
556 mutex_unlock(&the_lnet.ln_api_mutex);
557 CERROR("Invalid value for lnet_retry_count (%lu). "
558 "Has to be smaller than lnet_transaction_timeout (%u)\n",
559 value, lnet_transaction_timeout);
563 *retry_count = value;
565 /* Update the lnet_lnd_timeout now that we've modified the
568 lnet_set_lnd_timeout();
570 mutex_unlock(&the_lnet.ln_api_mutex);
576 intf_max_set(const char *val, cfs_kernel_param_arg_t *kp)
580 rc = kstrtoint(val, 0, &value);
582 CERROR("Invalid module parameter value for 'lnet_interfaces_max'\n");
586 if (value < LNET_INTERFACES_MIN) {
587 CWARN("max interfaces provided are too small, setting to %d\n",
588 LNET_INTERFACES_MAX_DEFAULT);
589 value = LNET_INTERFACES_MAX_DEFAULT;
592 *(int *)kp->arg = value;
598 response_tracking_set(const char *val, cfs_kernel_param_arg_t *kp)
601 unsigned long new_value;
603 rc = kstrtoul(val, 0, &new_value);
605 CERROR("Invalid value for 'lnet_response_tracking'\n");
609 if (new_value < 0 || new_value > 3) {
610 CWARN("Invalid value (%lu) for 'lnet_response_tracking'\n",
615 lnet_response_tracking = new_value;
621 lnet_get_routes(void)
627 lnet_get_networks(void)
632 if (*networks != 0 && *ip2nets != 0) {
633 LCONSOLE_ERROR_MSG(0x101, "Please specify EITHER 'networks' or "
634 "'ip2nets' but not both at once\n");
639 rc = lnet_parse_ip2nets(&nets, ip2nets);
640 return (rc == 0) ? nets : NULL;
650 lnet_init_locks(void)
652 spin_lock_init(&the_lnet.ln_eq_wait_lock);
653 spin_lock_init(&the_lnet.ln_msg_resend_lock);
654 init_completion(&the_lnet.ln_mt_wait_complete);
655 mutex_init(&the_lnet.ln_lnd_mutex);
658 struct kmem_cache *lnet_mes_cachep; /* MEs kmem_cache */
659 struct kmem_cache *lnet_small_mds_cachep; /* <= LNET_SMALL_MD_SIZE bytes
661 struct kmem_cache *lnet_udsp_cachep; /* udsp cache */
662 struct kmem_cache *lnet_rspt_cachep; /* response tracker cache */
663 struct kmem_cache *lnet_msg_cachep;
666 lnet_slab_setup(void)
668 /* create specific kmem_cache for MEs and small MDs (i.e., originally
669 * allocated in <size-xxx> kmem_cache).
671 lnet_mes_cachep = kmem_cache_create("lnet_MEs", sizeof(struct lnet_me),
673 if (!lnet_mes_cachep)
676 lnet_small_mds_cachep = kmem_cache_create("lnet_small_MDs",
677 LNET_SMALL_MD_SIZE, 0, 0,
679 if (!lnet_small_mds_cachep)
682 lnet_udsp_cachep = kmem_cache_create("lnet_udsp",
683 sizeof(struct lnet_udsp),
685 if (!lnet_udsp_cachep)
688 lnet_rspt_cachep = kmem_cache_create("lnet_rspt", sizeof(struct lnet_rsp_tracker),
690 if (!lnet_rspt_cachep)
693 lnet_msg_cachep = kmem_cache_create("lnet_msg", sizeof(struct lnet_msg),
695 if (!lnet_msg_cachep)
702 lnet_slab_cleanup(void)
704 if (lnet_msg_cachep) {
705 kmem_cache_destroy(lnet_msg_cachep);
706 lnet_msg_cachep = NULL;
709 if (lnet_rspt_cachep) {
710 kmem_cache_destroy(lnet_rspt_cachep);
711 lnet_rspt_cachep = NULL;
714 if (lnet_udsp_cachep) {
715 kmem_cache_destroy(lnet_udsp_cachep);
716 lnet_udsp_cachep = NULL;
719 if (lnet_small_mds_cachep) {
720 kmem_cache_destroy(lnet_small_mds_cachep);
721 lnet_small_mds_cachep = NULL;
724 if (lnet_mes_cachep) {
725 kmem_cache_destroy(lnet_mes_cachep);
726 lnet_mes_cachep = NULL;
731 lnet_create_remote_nets_table(void)
734 struct list_head *hash;
736 LASSERT(the_lnet.ln_remote_nets_hash == NULL);
737 LASSERT(the_lnet.ln_remote_nets_hbits > 0);
738 CFS_ALLOC_PTR_ARRAY(hash, LNET_REMOTE_NETS_HASH_SIZE);
740 CERROR("Failed to create remote nets hash table\n");
744 for (i = 0; i < LNET_REMOTE_NETS_HASH_SIZE; i++)
745 INIT_LIST_HEAD(&hash[i]);
746 the_lnet.ln_remote_nets_hash = hash;
751 lnet_destroy_remote_nets_table(void)
755 if (the_lnet.ln_remote_nets_hash == NULL)
758 for (i = 0; i < LNET_REMOTE_NETS_HASH_SIZE; i++)
759 LASSERT(list_empty(&the_lnet.ln_remote_nets_hash[i]));
761 CFS_FREE_PTR_ARRAY(the_lnet.ln_remote_nets_hash,
762 LNET_REMOTE_NETS_HASH_SIZE);
763 the_lnet.ln_remote_nets_hash = NULL;
767 lnet_destroy_locks(void)
769 if (the_lnet.ln_res_lock != NULL) {
770 cfs_percpt_lock_free(the_lnet.ln_res_lock);
771 the_lnet.ln_res_lock = NULL;
774 if (the_lnet.ln_net_lock != NULL) {
775 cfs_percpt_lock_free(the_lnet.ln_net_lock);
776 the_lnet.ln_net_lock = NULL;
781 lnet_create_locks(void)
785 the_lnet.ln_res_lock = cfs_percpt_lock_alloc(lnet_cpt_table());
786 if (the_lnet.ln_res_lock == NULL)
789 the_lnet.ln_net_lock = cfs_percpt_lock_alloc(lnet_cpt_table());
790 if (the_lnet.ln_net_lock == NULL)
796 lnet_destroy_locks();
800 static void lnet_assert_wire_constants(void)
802 /* Wire protocol assertions generated by 'wirecheck'
803 * running on Linux robert.bartonsoftware.com 2.6.8-1.521
804 * #1 Mon Aug 16 09:01:18 EDT 2004 i686 athlon i386 GNU/Linux
805 * with gcc version 3.3.3 20040412 (Red Hat Linux 3.3.3-7)
809 BUILD_BUG_ON(LNET_PROTO_TCP_MAGIC != 0xeebc0ded);
810 BUILD_BUG_ON(LNET_PROTO_TCP_VERSION_MAJOR != 1);
811 BUILD_BUG_ON(LNET_PROTO_TCP_VERSION_MINOR != 0);
812 BUILD_BUG_ON(LNET_MSG_ACK != 0);
813 BUILD_BUG_ON(LNET_MSG_PUT != 1);
814 BUILD_BUG_ON(LNET_MSG_GET != 2);
815 BUILD_BUG_ON(LNET_MSG_REPLY != 3);
816 BUILD_BUG_ON(LNET_MSG_HELLO != 4);
818 BUILD_BUG_ON((int)sizeof(lnet_nid_t) != 8);
819 BUILD_BUG_ON((int)sizeof(lnet_pid_t) != 4);
821 /* Checks for struct lnet_nid */
822 BUILD_BUG_ON((int)sizeof(struct lnet_nid) != 20);
823 BUILD_BUG_ON((int)offsetof(struct lnet_nid, nid_size) != 0);
824 BUILD_BUG_ON((int)sizeof(((struct lnet_nid *)0)->nid_size) != 1);
825 BUILD_BUG_ON((int)offsetof(struct lnet_nid, nid_type) != 1);
826 BUILD_BUG_ON((int)sizeof(((struct lnet_nid *)0)->nid_type) != 1);
827 BUILD_BUG_ON((int)offsetof(struct lnet_nid, nid_num) != 2);
828 BUILD_BUG_ON((int)sizeof(((struct lnet_nid *)0)->nid_num) != 2);
829 BUILD_BUG_ON((int)offsetof(struct lnet_nid, nid_addr) != 4);
830 BUILD_BUG_ON((int)sizeof(((struct lnet_nid *)0)->nid_addr) != 16);
832 /* Checks for struct lnet_process_id_packed */
833 BUILD_BUG_ON((int)sizeof(struct lnet_process_id_packed) != 12);
834 BUILD_BUG_ON((int)offsetof(struct lnet_process_id_packed, nid) != 0);
835 BUILD_BUG_ON((int)sizeof(((struct lnet_process_id_packed *)0)->nid) != 8);
836 BUILD_BUG_ON((int)offsetof(struct lnet_process_id_packed, pid) != 8);
837 BUILD_BUG_ON((int)sizeof(((struct lnet_process_id_packed *)0)->pid) != 4);
839 /* Checks for struct lnet_handle_wire */
840 BUILD_BUG_ON((int)sizeof(struct lnet_handle_wire) != 16);
841 BUILD_BUG_ON((int)offsetof(struct lnet_handle_wire,
842 wh_interface_cookie) != 0);
843 BUILD_BUG_ON((int)sizeof(((struct lnet_handle_wire *)0)->wh_interface_cookie) != 8);
844 BUILD_BUG_ON((int)offsetof(struct lnet_handle_wire,
845 wh_object_cookie) != 8);
846 BUILD_BUG_ON((int)sizeof(((struct lnet_handle_wire *)0)->wh_object_cookie) != 8);
848 /* Checks for struct struct lnet_magicversion */
849 BUILD_BUG_ON((int)sizeof(struct lnet_magicversion) != 8);
850 BUILD_BUG_ON((int)offsetof(struct lnet_magicversion, magic) != 0);
851 BUILD_BUG_ON((int)sizeof(((struct lnet_magicversion *)0)->magic) != 4);
852 BUILD_BUG_ON((int)offsetof(struct lnet_magicversion, version_major) != 4);
853 BUILD_BUG_ON((int)sizeof(((struct lnet_magicversion *)0)->version_major) != 2);
854 BUILD_BUG_ON((int)offsetof(struct lnet_magicversion,
855 version_minor) != 6);
856 BUILD_BUG_ON((int)sizeof(((struct lnet_magicversion *)0)->version_minor) != 2);
858 /* Checks for struct _lnet_hdr_nid4 */
859 BUILD_BUG_ON((int)sizeof(struct _lnet_hdr_nid4) != 72);
860 BUILD_BUG_ON((int)offsetof(struct _lnet_hdr_nid4, dest_nid) != 0);
861 BUILD_BUG_ON((int)sizeof(((struct _lnet_hdr_nid4 *)0)->dest_nid) != 8);
862 BUILD_BUG_ON((int)offsetof(struct _lnet_hdr_nid4, src_nid) != 8);
863 BUILD_BUG_ON((int)sizeof(((struct _lnet_hdr_nid4 *)0)->src_nid) != 8);
864 BUILD_BUG_ON((int)offsetof(struct _lnet_hdr_nid4, dest_pid) != 16);
865 BUILD_BUG_ON((int)sizeof(((struct _lnet_hdr_nid4 *)0)->dest_pid) != 4);
866 BUILD_BUG_ON((int)offsetof(struct _lnet_hdr_nid4, src_pid) != 20);
867 BUILD_BUG_ON((int)sizeof(((struct _lnet_hdr_nid4 *)0)->src_pid) != 4);
868 BUILD_BUG_ON((int)offsetof(struct _lnet_hdr_nid4, type) != 24);
869 BUILD_BUG_ON((int)sizeof(((struct _lnet_hdr_nid4 *)0)->type) != 4);
870 BUILD_BUG_ON((int)offsetof(struct _lnet_hdr_nid4, payload_length) != 28);
871 BUILD_BUG_ON((int)sizeof(((struct _lnet_hdr_nid4 *)0)->payload_length) != 4);
872 BUILD_BUG_ON((int)offsetof(struct _lnet_hdr_nid4, msg) != 32);
873 BUILD_BUG_ON((int)sizeof(((struct _lnet_hdr_nid4 *)0)->msg) != 40);
876 BUILD_BUG_ON((int)offsetof(struct _lnet_hdr_nid4, msg.ack.dst_wmd) != 32);
877 BUILD_BUG_ON((int)sizeof(((struct _lnet_hdr_nid4 *)0)->msg.ack.dst_wmd) != 16);
878 BUILD_BUG_ON((int)offsetof(struct _lnet_hdr_nid4, msg.ack.match_bits) != 48);
879 BUILD_BUG_ON((int)sizeof(((struct _lnet_hdr_nid4 *)0)->msg.ack.match_bits) != 8);
880 BUILD_BUG_ON((int)offsetof(struct _lnet_hdr_nid4, msg.ack.mlength) != 56);
881 BUILD_BUG_ON((int)sizeof(((struct _lnet_hdr_nid4 *)0)->msg.ack.mlength) != 4);
884 BUILD_BUG_ON((int)offsetof(struct _lnet_hdr_nid4, msg.put.ack_wmd) != 32);
885 BUILD_BUG_ON((int)sizeof(((struct _lnet_hdr_nid4 *)0)->msg.put.ack_wmd) != 16);
886 BUILD_BUG_ON((int)offsetof(struct _lnet_hdr_nid4, msg.put.match_bits) != 48);
887 BUILD_BUG_ON((int)sizeof(((struct _lnet_hdr_nid4 *)0)->msg.put.match_bits) != 8);
888 BUILD_BUG_ON((int)offsetof(struct _lnet_hdr_nid4, msg.put.hdr_data) != 56);
889 BUILD_BUG_ON((int)sizeof(((struct _lnet_hdr_nid4 *)0)->msg.put.hdr_data) != 8);
890 BUILD_BUG_ON((int)offsetof(struct _lnet_hdr_nid4, msg.put.ptl_index) != 64);
891 BUILD_BUG_ON((int)sizeof(((struct _lnet_hdr_nid4 *)0)->msg.put.ptl_index) != 4);
892 BUILD_BUG_ON((int)offsetof(struct _lnet_hdr_nid4, msg.put.offset) != 68);
893 BUILD_BUG_ON((int)sizeof(((struct _lnet_hdr_nid4 *)0)->msg.put.offset) != 4);
896 BUILD_BUG_ON((int)offsetof(struct _lnet_hdr_nid4, msg.get.return_wmd) != 32);
897 BUILD_BUG_ON((int)sizeof(((struct _lnet_hdr_nid4 *)0)->msg.get.return_wmd) != 16);
898 BUILD_BUG_ON((int)offsetof(struct _lnet_hdr_nid4, msg.get.match_bits) != 48);
899 BUILD_BUG_ON((int)sizeof(((struct _lnet_hdr_nid4 *)0)->msg.get.match_bits) != 8);
900 BUILD_BUG_ON((int)offsetof(struct _lnet_hdr_nid4, msg.get.ptl_index) != 56);
901 BUILD_BUG_ON((int)sizeof(((struct _lnet_hdr_nid4 *)0)->msg.get.ptl_index) != 4);
902 BUILD_BUG_ON((int)offsetof(struct _lnet_hdr_nid4, msg.get.src_offset) != 60);
903 BUILD_BUG_ON((int)sizeof(((struct _lnet_hdr_nid4 *)0)->msg.get.src_offset) != 4);
904 BUILD_BUG_ON((int)offsetof(struct _lnet_hdr_nid4, msg.get.sink_length) != 64);
905 BUILD_BUG_ON((int)sizeof(((struct _lnet_hdr_nid4 *)0)->msg.get.sink_length) != 4);
908 BUILD_BUG_ON((int)offsetof(struct _lnet_hdr_nid4, msg.reply.dst_wmd) != 32);
909 BUILD_BUG_ON((int)sizeof(((struct _lnet_hdr_nid4 *)0)->msg.reply.dst_wmd) != 16);
912 BUILD_BUG_ON((int)offsetof(struct _lnet_hdr_nid4, msg.hello.incarnation) != 32);
913 BUILD_BUG_ON((int)sizeof(((struct _lnet_hdr_nid4 *)0)->msg.hello.incarnation) != 8);
914 BUILD_BUG_ON((int)offsetof(struct _lnet_hdr_nid4, msg.hello.type) != 40);
915 BUILD_BUG_ON((int)sizeof(((struct _lnet_hdr_nid4 *)0)->msg.hello.type) != 4);
917 /* Checks for struct lnet_ni_status and related constants */
918 BUILD_BUG_ON(LNET_NI_STATUS_INVALID != 0x00000000);
919 BUILD_BUG_ON(LNET_NI_STATUS_UP != 0x15aac0de);
920 BUILD_BUG_ON(LNET_NI_STATUS_DOWN != 0xdeadface);
922 /* Checks for struct lnet_ni_status */
923 BUILD_BUG_ON((int)sizeof(struct lnet_ni_status) != 16);
924 BUILD_BUG_ON((int)offsetof(struct lnet_ni_status, ns_nid) != 0);
925 BUILD_BUG_ON((int)sizeof(((struct lnet_ni_status *)0)->ns_nid) != 8);
926 BUILD_BUG_ON((int)offsetof(struct lnet_ni_status, ns_status) != 8);
927 BUILD_BUG_ON((int)sizeof(((struct lnet_ni_status *)0)->ns_status) != 4);
928 BUILD_BUG_ON((int)offsetof(struct lnet_ni_status, ns_msg_size) != 12);
929 BUILD_BUG_ON((int)sizeof(((struct lnet_ni_status *)0)->ns_msg_size) != 4);
931 /* Checks for struct lnet_ni_large_status */
932 BUILD_BUG_ON((int)sizeof(struct lnet_ni_large_status) != 24);
933 BUILD_BUG_ON((int)offsetof(struct lnet_ni_large_status, ns_status) != 0);
934 BUILD_BUG_ON((int)sizeof(((struct lnet_ni_large_status *)0)->ns_status) != 4);
935 BUILD_BUG_ON((int)offsetof(struct lnet_ni_large_status, ns_nid) != 4);
936 BUILD_BUG_ON((int)sizeof(((struct lnet_ni_large_status *)0)->ns_nid) != 20);
938 /* Checks for struct lnet_ping_info and related constants */
939 BUILD_BUG_ON(LNET_PROTO_PING_MAGIC != 0x70696E67);
940 BUILD_BUG_ON(LNET_PING_FEAT_INVAL != 0);
941 BUILD_BUG_ON(LNET_PING_FEAT_BASE != 1);
942 BUILD_BUG_ON(LNET_PING_FEAT_NI_STATUS != 2);
943 BUILD_BUG_ON(LNET_PING_FEAT_RTE_DISABLED != 4);
944 BUILD_BUG_ON(LNET_PING_FEAT_MULTI_RAIL != 8);
945 BUILD_BUG_ON(LNET_PING_FEAT_DISCOVERY != 16);
946 BUILD_BUG_ON(LNET_PING_FEAT_LARGE_ADDR != 32);
947 BUILD_BUG_ON(LNET_PING_FEAT_PRIMARY_LARGE != 64);
948 BUILD_BUG_ON(LNET_PING_FEAT_BITS != 127);
950 /* Checks for struct lnet_ping_info */
951 BUILD_BUG_ON((int)sizeof(struct lnet_ping_info) != 16);
952 BUILD_BUG_ON((int)offsetof(struct lnet_ping_info, pi_magic) != 0);
953 BUILD_BUG_ON((int)sizeof(((struct lnet_ping_info *)0)->pi_magic) != 4);
954 BUILD_BUG_ON((int)offsetof(struct lnet_ping_info, pi_features) != 4);
955 BUILD_BUG_ON((int)sizeof(((struct lnet_ping_info *)0)->pi_features) != 4);
956 BUILD_BUG_ON((int)offsetof(struct lnet_ping_info, pi_pid) != 8);
957 BUILD_BUG_ON((int)sizeof(((struct lnet_ping_info *)0)->pi_pid) != 4);
958 BUILD_BUG_ON((int)offsetof(struct lnet_ping_info, pi_nnis) != 12);
959 BUILD_BUG_ON((int)sizeof(((struct lnet_ping_info *)0)->pi_nnis) != 4);
960 BUILD_BUG_ON((int)offsetof(struct lnet_ping_info, pi_ni) != 16);
961 BUILD_BUG_ON(offsetof(struct lnet_ping_info, pi_ni) != sizeof(struct lnet_ping_info));
963 /* Acceptor connection request */
964 BUILD_BUG_ON(LNET_PROTO_ACCEPTOR_VERSION != 1);
966 /* Checks for struct lnet_acceptor_connreq */
967 BUILD_BUG_ON((int)sizeof(struct lnet_acceptor_connreq) != 16);
968 BUILD_BUG_ON((int)offsetof(struct lnet_acceptor_connreq, acr_magic) != 0);
969 BUILD_BUG_ON((int)sizeof(((struct lnet_acceptor_connreq *)0)->acr_magic) != 4);
970 BUILD_BUG_ON((int)offsetof(struct lnet_acceptor_connreq, acr_version) != 4);
971 BUILD_BUG_ON((int)sizeof(((struct lnet_acceptor_connreq *)0)->acr_version) != 4);
972 BUILD_BUG_ON((int)offsetof(struct lnet_acceptor_connreq, acr_nid) != 8);
973 BUILD_BUG_ON((int)sizeof(((struct lnet_acceptor_connreq *)0)->acr_nid) != 8);
975 /* Checks for struct lnet_acceptor_connreq_v2 */
976 BUILD_BUG_ON((int)sizeof(struct lnet_acceptor_connreq_v2) != 28);
977 BUILD_BUG_ON((int)offsetof(struct lnet_acceptor_connreq_v2, acr_magic) != 0);
978 BUILD_BUG_ON((int)sizeof(((struct lnet_acceptor_connreq_v2 *)0)->acr_magic) != 4);
979 BUILD_BUG_ON((int)offsetof(struct lnet_acceptor_connreq_v2, acr_version) != 4);
980 BUILD_BUG_ON((int)sizeof(((struct lnet_acceptor_connreq_v2 *)0)->acr_version) != 4);
981 BUILD_BUG_ON((int)offsetof(struct lnet_acceptor_connreq_v2, acr_nid) != 8);
982 BUILD_BUG_ON((int)sizeof(((struct lnet_acceptor_connreq_v2 *)0)->acr_nid) != 20);
984 /* Checks for struct lnet_counters_common */
985 BUILD_BUG_ON((int)sizeof(struct lnet_counters_common) != 60);
986 BUILD_BUG_ON((int)offsetof(struct lnet_counters_common, lcc_msgs_alloc) != 0);
987 BUILD_BUG_ON((int)sizeof(((struct lnet_counters_common *)0)->lcc_msgs_alloc) != 4);
988 BUILD_BUG_ON((int)offsetof(struct lnet_counters_common, lcc_msgs_max) != 4);
989 BUILD_BUG_ON((int)sizeof(((struct lnet_counters_common *)0)->lcc_msgs_max) != 4);
990 BUILD_BUG_ON((int)offsetof(struct lnet_counters_common, lcc_errors) != 8);
991 BUILD_BUG_ON((int)sizeof(((struct lnet_counters_common *)0)->lcc_errors) != 4);
992 BUILD_BUG_ON((int)offsetof(struct lnet_counters_common, lcc_send_count) != 12);
993 BUILD_BUG_ON((int)sizeof(((struct lnet_counters_common *)0)->lcc_send_count) != 4);
994 BUILD_BUG_ON((int)offsetof(struct lnet_counters_common, lcc_recv_count) != 16);
995 BUILD_BUG_ON((int)sizeof(((struct lnet_counters_common *)0)->lcc_recv_count) != 4);
996 BUILD_BUG_ON((int)offsetof(struct lnet_counters_common, lcc_route_count) != 20);
997 BUILD_BUG_ON((int)sizeof(((struct lnet_counters_common *)0)->lcc_route_count) != 4);
998 BUILD_BUG_ON((int)offsetof(struct lnet_counters_common, lcc_drop_count) != 24);
999 BUILD_BUG_ON((int)sizeof(((struct lnet_counters_common *)0)->lcc_drop_count) != 4);
1000 BUILD_BUG_ON((int)offsetof(struct lnet_counters_common, lcc_send_length) != 28);
1001 BUILD_BUG_ON((int)sizeof(((struct lnet_counters_common *)0)->lcc_send_length) != 8);
1002 BUILD_BUG_ON((int)offsetof(struct lnet_counters_common, lcc_recv_length) != 36);
1003 BUILD_BUG_ON((int)sizeof(((struct lnet_counters_common *)0)->lcc_recv_length) != 8);
1004 BUILD_BUG_ON((int)offsetof(struct lnet_counters_common, lcc_route_length) != 44);
1005 BUILD_BUG_ON((int)sizeof(((struct lnet_counters_common *)0)->lcc_route_length) != 8);
1006 BUILD_BUG_ON((int)offsetof(struct lnet_counters_common, lcc_drop_length) != 52);
1007 BUILD_BUG_ON((int)sizeof(((struct lnet_counters_common *)0)->lcc_drop_length) != 8);
1010 static const struct lnet_lnd *lnet_find_lnd_by_type(__u32 type)
1012 const struct lnet_lnd *lnd;
1014 /* holding lnd mutex */
1015 if (type >= NUM_LNDS)
1017 lnd = the_lnet.ln_lnds[type];
1018 LASSERT(!lnd || lnd->lnd_type == type);
1024 lnet_get_lnd_timeout(void)
1026 return lnet_lnd_timeout;
1028 EXPORT_SYMBOL(lnet_get_lnd_timeout);
1031 lnet_register_lnd(const struct lnet_lnd *lnd)
1033 mutex_lock(&the_lnet.ln_lnd_mutex);
1035 LASSERT(libcfs_isknown_lnd(lnd->lnd_type));
1036 LASSERT(lnet_find_lnd_by_type(lnd->lnd_type) == NULL);
1038 the_lnet.ln_lnds[lnd->lnd_type] = lnd;
1040 CDEBUG(D_NET, "%s LND registered\n", libcfs_lnd2str(lnd->lnd_type));
1042 mutex_unlock(&the_lnet.ln_lnd_mutex);
1044 EXPORT_SYMBOL(lnet_register_lnd);
1047 lnet_unregister_lnd(const struct lnet_lnd *lnd)
1049 mutex_lock(&the_lnet.ln_lnd_mutex);
1051 LASSERT(lnet_find_lnd_by_type(lnd->lnd_type) == lnd);
1053 the_lnet.ln_lnds[lnd->lnd_type] = NULL;
1054 CDEBUG(D_NET, "%s LND unregistered\n", libcfs_lnd2str(lnd->lnd_type));
1056 mutex_unlock(&the_lnet.ln_lnd_mutex);
1058 EXPORT_SYMBOL(lnet_unregister_lnd);
1061 lnet_counters_get_common_locked(struct lnet_counters_common *common)
1063 struct lnet_counters *ctr;
1066 /* FIXME !!! Their is no assert_lnet_net_locked() to ensure this
1067 * actually called under the protection of the lnet_net_lock.
1069 memset(common, 0, sizeof(*common));
1071 cfs_percpt_for_each(ctr, i, the_lnet.ln_counters) {
1072 common->lcc_msgs_max += ctr->lct_common.lcc_msgs_max;
1073 common->lcc_msgs_alloc += ctr->lct_common.lcc_msgs_alloc;
1074 common->lcc_errors += ctr->lct_common.lcc_errors;
1075 common->lcc_send_count += ctr->lct_common.lcc_send_count;
1076 common->lcc_recv_count += ctr->lct_common.lcc_recv_count;
1077 common->lcc_route_count += ctr->lct_common.lcc_route_count;
1078 common->lcc_drop_count += ctr->lct_common.lcc_drop_count;
1079 common->lcc_send_length += ctr->lct_common.lcc_send_length;
1080 common->lcc_recv_length += ctr->lct_common.lcc_recv_length;
1081 common->lcc_route_length += ctr->lct_common.lcc_route_length;
1082 common->lcc_drop_length += ctr->lct_common.lcc_drop_length;
1087 lnet_counters_get_common(struct lnet_counters_common *common)
1089 lnet_net_lock(LNET_LOCK_EX);
1090 lnet_counters_get_common_locked(common);
1091 lnet_net_unlock(LNET_LOCK_EX);
1093 EXPORT_SYMBOL(lnet_counters_get_common);
1096 lnet_counters_get(struct lnet_counters *counters)
1098 struct lnet_counters *ctr;
1099 struct lnet_counters_health *health = &counters->lct_health;
1102 memset(counters, 0, sizeof(*counters));
1104 lnet_net_lock(LNET_LOCK_EX);
1106 if (the_lnet.ln_state != LNET_STATE_RUNNING)
1107 GOTO(out_unlock, rc = -ENODEV);
1109 lnet_counters_get_common_locked(&counters->lct_common);
1111 cfs_percpt_for_each(ctr, i, the_lnet.ln_counters) {
1112 health->lch_rst_alloc += ctr->lct_health.lch_rst_alloc;
1113 health->lch_resend_count += ctr->lct_health.lch_resend_count;
1114 health->lch_response_timeout_count +=
1115 ctr->lct_health.lch_response_timeout_count;
1116 health->lch_local_interrupt_count +=
1117 ctr->lct_health.lch_local_interrupt_count;
1118 health->lch_local_dropped_count +=
1119 ctr->lct_health.lch_local_dropped_count;
1120 health->lch_local_aborted_count +=
1121 ctr->lct_health.lch_local_aborted_count;
1122 health->lch_local_no_route_count +=
1123 ctr->lct_health.lch_local_no_route_count;
1124 health->lch_local_timeout_count +=
1125 ctr->lct_health.lch_local_timeout_count;
1126 health->lch_local_error_count +=
1127 ctr->lct_health.lch_local_error_count;
1128 health->lch_remote_dropped_count +=
1129 ctr->lct_health.lch_remote_dropped_count;
1130 health->lch_remote_error_count +=
1131 ctr->lct_health.lch_remote_error_count;
1132 health->lch_remote_timeout_count +=
1133 ctr->lct_health.lch_remote_timeout_count;
1134 health->lch_network_timeout_count +=
1135 ctr->lct_health.lch_network_timeout_count;
1138 lnet_net_unlock(LNET_LOCK_EX);
1141 EXPORT_SYMBOL(lnet_counters_get);
1144 lnet_counters_reset(void)
1146 struct lnet_counters *counters;
1149 lnet_net_lock(LNET_LOCK_EX);
1151 if (the_lnet.ln_state != LNET_STATE_RUNNING)
1154 cfs_percpt_for_each(counters, i, the_lnet.ln_counters)
1155 memset(counters, 0, sizeof(struct lnet_counters));
1157 lnet_net_unlock(LNET_LOCK_EX);
1161 lnet_res_type2str(int type)
1166 case LNET_COOKIE_TYPE_MD:
1168 case LNET_COOKIE_TYPE_ME:
1170 case LNET_COOKIE_TYPE_EQ:
1176 lnet_res_container_cleanup(struct lnet_res_container *rec)
1180 if (rec->rec_type == 0) /* not set yet, it's uninitialized */
1183 while (!list_empty(&rec->rec_active)) {
1184 struct list_head *e = rec->rec_active.next;
1187 if (rec->rec_type == LNET_COOKIE_TYPE_MD) {
1188 lnet_md_free(list_entry(e, struct lnet_libmd, md_list));
1190 } else { /* NB: Active MEs should be attached on portals */
1197 /* Found alive MD/ME/EQ, user really should unlink/free
1198 * all of them before finalize LNet, but if someone didn't,
1199 * we have to recycle garbage for him */
1200 CERROR("%d active elements on exit of %s container\n",
1201 count, lnet_res_type2str(rec->rec_type));
1204 if (rec->rec_lh_hash != NULL) {
1205 CFS_FREE_PTR_ARRAY(rec->rec_lh_hash, LNET_LH_HASH_SIZE);
1206 rec->rec_lh_hash = NULL;
1209 rec->rec_type = 0; /* mark it as finalized */
1213 lnet_res_container_setup(struct lnet_res_container *rec, int cpt, int type)
1218 LASSERT(rec->rec_type == 0);
1220 rec->rec_type = type;
1221 INIT_LIST_HEAD(&rec->rec_active);
1223 rec->rec_lh_cookie = (cpt << LNET_COOKIE_TYPE_BITS) | type;
1225 /* Arbitrary choice of hash table size */
1226 LIBCFS_CPT_ALLOC(rec->rec_lh_hash, lnet_cpt_table(), cpt,
1227 LNET_LH_HASH_SIZE * sizeof(rec->rec_lh_hash[0]));
1228 if (rec->rec_lh_hash == NULL) {
1233 for (i = 0; i < LNET_LH_HASH_SIZE; i++)
1234 INIT_LIST_HEAD(&rec->rec_lh_hash[i]);
1239 CERROR("Failed to setup %s resource container\n",
1240 lnet_res_type2str(type));
1241 lnet_res_container_cleanup(rec);
1246 lnet_res_containers_destroy(struct lnet_res_container **recs)
1248 struct lnet_res_container *rec;
1251 cfs_percpt_for_each(rec, i, recs)
1252 lnet_res_container_cleanup(rec);
1254 cfs_percpt_free(recs);
1257 static struct lnet_res_container **
1258 lnet_res_containers_create(int type)
1260 struct lnet_res_container **recs;
1261 struct lnet_res_container *rec;
1265 recs = cfs_percpt_alloc(lnet_cpt_table(), sizeof(*rec));
1267 CERROR("Failed to allocate %s resource containers\n",
1268 lnet_res_type2str(type));
1272 cfs_percpt_for_each(rec, i, recs) {
1273 rc = lnet_res_container_setup(rec, i, type);
1275 lnet_res_containers_destroy(recs);
1283 struct lnet_libhandle *
1284 lnet_res_lh_lookup(struct lnet_res_container *rec, __u64 cookie)
1286 /* ALWAYS called with lnet_res_lock held */
1287 struct list_head *head;
1288 struct lnet_libhandle *lh;
1291 if ((cookie & LNET_COOKIE_MASK) != rec->rec_type)
1294 hash = cookie >> (LNET_COOKIE_TYPE_BITS + LNET_CPT_BITS);
1295 head = &rec->rec_lh_hash[hash & LNET_LH_HASH_MASK];
1297 list_for_each_entry(lh, head, lh_hash_chain) {
1298 if (lh->lh_cookie == cookie)
1306 lnet_res_lh_initialize(struct lnet_res_container *rec,
1307 struct lnet_libhandle *lh)
1309 /* ALWAYS called with lnet_res_lock held */
1310 unsigned int ibits = LNET_COOKIE_TYPE_BITS + LNET_CPT_BITS;
1313 lh->lh_cookie = rec->rec_lh_cookie;
1314 rec->rec_lh_cookie += 1 << ibits;
1316 hash = (lh->lh_cookie >> ibits) & LNET_LH_HASH_MASK;
1318 list_add(&lh->lh_hash_chain, &rec->rec_lh_hash[hash]);
1322 lnet_create_array_of_queues(void)
1324 struct list_head **qs;
1325 struct list_head *q;
1328 qs = cfs_percpt_alloc(lnet_cpt_table(),
1329 sizeof(struct list_head));
1331 CERROR("Failed to allocate queues\n");
1335 cfs_percpt_for_each(q, i, qs)
1341 static int lnet_unprepare(void);
1344 lnet_prepare(lnet_pid_t requested_pid)
1346 /* Prepare to bring up the network */
1347 struct lnet_res_container **recs;
1350 if (requested_pid == LNET_PID_ANY) {
1351 /* Don't instantiate LNET just for me */
1355 LASSERT(the_lnet.ln_refcount == 0);
1357 the_lnet.ln_routing = 0;
1359 LASSERT((requested_pid & LNET_PID_USERFLAG) == 0);
1360 the_lnet.ln_pid = requested_pid;
1362 INIT_LIST_HEAD(&the_lnet.ln_test_peers);
1363 INIT_LIST_HEAD(&the_lnet.ln_remote_peer_ni_list);
1364 INIT_LIST_HEAD(&the_lnet.ln_nets);
1365 INIT_LIST_HEAD(&the_lnet.ln_routers);
1366 INIT_LIST_HEAD(&the_lnet.ln_drop_rules);
1367 INIT_LIST_HEAD(&the_lnet.ln_delay_rules);
1368 INIT_LIST_HEAD(&the_lnet.ln_dc_request);
1369 INIT_LIST_HEAD(&the_lnet.ln_dc_working);
1370 INIT_LIST_HEAD(&the_lnet.ln_dc_expired);
1371 INIT_LIST_HEAD(&the_lnet.ln_mt_localNIRecovq);
1372 INIT_LIST_HEAD(&the_lnet.ln_mt_peerNIRecovq);
1373 INIT_LIST_HEAD(&the_lnet.ln_udsp_list);
1374 init_waitqueue_head(&the_lnet.ln_dc_waitq);
1375 the_lnet.ln_mt_handler = NULL;
1376 init_completion(&the_lnet.ln_started);
1377 atomic_set(&the_lnet.ln_late_msg_count, 0);
1378 atomic64_set(&the_lnet.ln_late_msg_nsecs, 0);
1380 rc = lnet_slab_setup();
1384 rc = lnet_create_remote_nets_table();
1389 * NB the interface cookie in wire handles guards against delayed
1390 * replies and ACKs appearing valid after reboot.
1392 the_lnet.ln_interface_cookie = ktime_get_real_ns();
1394 the_lnet.ln_counters = cfs_percpt_alloc(lnet_cpt_table(),
1395 sizeof(struct lnet_counters));
1396 if (the_lnet.ln_counters == NULL) {
1397 CERROR("Failed to allocate counters for LNet\n");
1402 rc = lnet_peer_tables_create();
1406 rc = lnet_msg_containers_create();
1410 rc = lnet_res_container_setup(&the_lnet.ln_eq_container, 0,
1411 LNET_COOKIE_TYPE_EQ);
1415 recs = lnet_res_containers_create(LNET_COOKIE_TYPE_MD);
1421 the_lnet.ln_md_containers = recs;
1423 rc = lnet_portals_create();
1425 CERROR("Failed to create portals for LNet: %d\n", rc);
1429 the_lnet.ln_mt_zombie_rstqs = lnet_create_array_of_queues();
1430 if (!the_lnet.ln_mt_zombie_rstqs) {
1443 lnet_unprepare(void)
1445 /* NB no LNET_LOCK since this is the last reference. All LND instances
1446 * have shut down already, so it is safe to unlink and free all
1447 * descriptors, even those that appear committed to a network op (eg MD
1448 * with non-zero pending count) */
1450 lnet_fail_nid(LNET_NID_ANY, 0);
1452 LASSERT(the_lnet.ln_refcount == 0);
1453 LASSERT(list_empty(&the_lnet.ln_test_peers));
1454 LASSERT(list_empty(&the_lnet.ln_nets));
1456 if (the_lnet.ln_mt_zombie_rstqs) {
1457 lnet_clean_zombie_rstqs();
1458 the_lnet.ln_mt_zombie_rstqs = NULL;
1461 lnet_assert_handler_unused(the_lnet.ln_mt_handler);
1462 the_lnet.ln_mt_handler = NULL;
1464 lnet_portals_destroy();
1466 if (the_lnet.ln_md_containers != NULL) {
1467 lnet_res_containers_destroy(the_lnet.ln_md_containers);
1468 the_lnet.ln_md_containers = NULL;
1471 lnet_res_container_cleanup(&the_lnet.ln_eq_container);
1473 lnet_msg_containers_destroy();
1475 lnet_rtrpools_free(0);
1477 if (the_lnet.ln_counters != NULL) {
1478 cfs_percpt_free(the_lnet.ln_counters);
1479 the_lnet.ln_counters = NULL;
1481 lnet_destroy_remote_nets_table();
1482 lnet_udsp_destroy(true);
1483 lnet_slab_cleanup();
1489 lnet_net2ni_locked(__u32 net_id, int cpt)
1492 struct lnet_net *net;
1494 LASSERT(cpt != LNET_LOCK_EX);
1496 list_for_each_entry(net, &the_lnet.ln_nets, net_list) {
1497 if (net->net_id == net_id) {
1498 ni = list_first_entry(&net->net_ni_list, struct lnet_ni,
1508 lnet_net2ni_addref(__u32 net)
1513 ni = lnet_net2ni_locked(net, 0);
1515 lnet_ni_addref_locked(ni, 0);
1520 EXPORT_SYMBOL(lnet_net2ni_addref);
1523 lnet_get_net_locked(__u32 net_id)
1525 struct lnet_net *net;
1527 list_for_each_entry(net, &the_lnet.ln_nets, net_list) {
1528 if (net->net_id == net_id)
1536 lnet_net_clr_pref_rtrs(struct lnet_net *net)
1538 struct list_head zombies;
1539 struct lnet_nid_list *ne;
1540 struct lnet_nid_list *tmp;
1542 INIT_LIST_HEAD(&zombies);
1544 lnet_net_lock(LNET_LOCK_EX);
1545 list_splice_init(&net->net_rtr_pref_nids, &zombies);
1546 lnet_net_unlock(LNET_LOCK_EX);
1548 list_for_each_entry_safe(ne, tmp, &zombies, nl_list) {
1549 list_del_init(&ne->nl_list);
1550 LIBCFS_FREE(ne, sizeof(*ne));
1555 lnet_net_add_pref_rtr(struct lnet_net *net,
1556 struct lnet_nid *gw_nid)
1557 __must_hold(&the_lnet.ln_api_mutex)
1559 struct lnet_nid_list *ne;
1561 /* This function is called with api_mutex held. When the api_mutex
1562 * is held the list can not be modified, as it is only modified as
1563 * a result of applying a UDSP and that happens under api_mutex
1566 list_for_each_entry(ne, &net->net_rtr_pref_nids, nl_list) {
1567 if (nid_same(&ne->nl_nid, gw_nid))
1571 LIBCFS_ALLOC(ne, sizeof(*ne));
1575 ne->nl_nid = *gw_nid;
1577 /* Lock the cpt to protect against addition and checks in the
1578 * selection algorithm
1580 lnet_net_lock(LNET_LOCK_EX);
1581 list_add(&ne->nl_list, &net->net_rtr_pref_nids);
1582 lnet_net_unlock(LNET_LOCK_EX);
1588 lnet_nid4_cpt_hash(lnet_nid_t nid, unsigned int number)
1591 __u16 lnd = LNET_NETTYP(LNET_NIDNET(nid));
1594 if (lnd == KFILND || lnd == GNILND) {
1595 cpt = hash_long(key, LNET_CPT_BITS);
1597 /* NB: The number of CPTs needn't be a power of 2 */
1599 cpt = (key + cpt + (cpt >> 1)) % number;
1601 __u64 pair_bits = 0x0001000100010001LLU;
1602 __u64 mask = pair_bits * 0xFF;
1604 /* For ipv4 NIDs, use (sum-by-multiplication of nid bytes) mod
1605 * (number of CPTs) to match nid to a CPT.
1607 pair_sum = (key & mask) + ((key >> 8) & mask);
1608 pair_sum = (pair_sum * pair_bits) >> 48;
1609 cpt = (unsigned int)(pair_sum) % number;
1612 CDEBUG(D_NET, "Match nid %s to cpt %u\n",
1613 libcfs_nid2str(nid), cpt);
1619 lnet_nid_cpt_hash(struct lnet_nid *nid, unsigned int number)
1625 LASSERT(number >= 1 && number <= LNET_CPT_NUMBER);
1630 if (nid_is_nid4(nid))
1631 return lnet_nid4_cpt_hash(lnet_nid_to_nid4(nid), number);
1633 for (i = 0; i < 4; i++)
1634 h = cfs_hash_32(nid->nid_addr[i]^h, 32);
1635 val = cfs_hash_32(LNET_NID_NET(nid) ^ h, LNET_CPT_BITS);
1638 return (unsigned int)(h + val + (val >> 1)) % number;
1642 lnet_cpt_of_nid_locked(struct lnet_nid *nid, struct lnet_ni *ni)
1644 struct lnet_net *net;
1646 /* must called with hold of lnet_net_lock */
1647 if (LNET_CPT_NUMBER == 1)
1648 return 0; /* the only one */
1651 * If NI is provided then use the CPT identified in the NI cpt
1652 * list if one exists. If one doesn't exist, then that NI is
1653 * associated with all CPTs and it follows that the net it belongs
1654 * to is implicitly associated with all CPTs, so just hash the nid
1658 if (ni->ni_cpts != NULL)
1659 return ni->ni_cpts[lnet_nid_cpt_hash(nid,
1662 return lnet_nid_cpt_hash(nid, LNET_CPT_NUMBER);
1665 /* no NI provided so look at the net */
1666 net = lnet_get_net_locked(LNET_NID_NET(nid));
1668 if (net != NULL && net->net_cpts != NULL) {
1669 return net->net_cpts[lnet_nid_cpt_hash(nid, net->net_ncpts)];
1672 return lnet_nid_cpt_hash(nid, LNET_CPT_NUMBER);
1676 lnet_nid2cpt(struct lnet_nid *nid, struct lnet_ni *ni)
1681 if (LNET_CPT_NUMBER == 1)
1682 return 0; /* the only one */
1684 cpt = lnet_net_lock_current();
1686 cpt2 = lnet_cpt_of_nid_locked(nid, ni);
1688 lnet_net_unlock(cpt);
1692 EXPORT_SYMBOL(lnet_nid2cpt);
1695 lnet_cpt_of_nid(lnet_nid_t nid4, struct lnet_ni *ni)
1697 struct lnet_nid nid;
1699 if (LNET_CPT_NUMBER == 1)
1700 return 0; /* the only one */
1702 lnet_nid4_to_nid(nid4, &nid);
1703 return lnet_nid2cpt(&nid, ni);
1705 EXPORT_SYMBOL(lnet_cpt_of_nid);
1708 lnet_islocalnet_locked(__u32 net_id)
1710 struct lnet_net *net;
1713 net = lnet_get_net_locked(net_id);
1715 local = net != NULL;
1721 lnet_islocalnet(__u32 net_id)
1726 cpt = lnet_net_lock_current();
1728 local = lnet_islocalnet_locked(net_id);
1730 lnet_net_unlock(cpt);
1736 lnet_nid_to_ni_locked(struct lnet_nid *nid, int cpt)
1738 struct lnet_net *net;
1741 LASSERT(cpt != LNET_LOCK_EX);
1743 list_for_each_entry(net, &the_lnet.ln_nets, net_list) {
1744 list_for_each_entry(ni, &net->net_ni_list, ni_netlist) {
1745 if (nid_same(&ni->ni_nid, nid))
1754 lnet_nid_to_ni_addref(struct lnet_nid *nid)
1759 ni = lnet_nid_to_ni_locked(nid, 0);
1761 lnet_ni_addref_locked(ni, 0);
1766 EXPORT_SYMBOL(lnet_nid_to_ni_addref);
1769 lnet_islocalnid(struct lnet_nid *nid)
1774 cpt = lnet_net_lock_current();
1775 ni = lnet_nid_to_ni_locked(nid, cpt);
1776 lnet_net_unlock(cpt);
1782 lnet_count_acceptor_nets(void)
1784 /* Return the # of NIs that need the acceptor. */
1786 struct lnet_net *net;
1789 cpt = lnet_net_lock_current();
1790 list_for_each_entry(net, &the_lnet.ln_nets, net_list) {
1791 /* all socklnd type networks should have the acceptor
1793 if (net->net_lnd->lnd_accept != NULL)
1797 lnet_net_unlock(cpt);
1802 struct lnet_ping_buffer *
1803 lnet_ping_buffer_alloc(int nbytes, gfp_t gfp)
1805 struct lnet_ping_buffer *pbuf;
1807 LIBCFS_ALLOC_GFP(pbuf, LNET_PING_BUFFER_SIZE(nbytes), gfp);
1809 pbuf->pb_nbytes = nbytes; /* sizeof of pb_info */
1810 pbuf->pb_needs_post = false;
1811 atomic_set(&pbuf->pb_refcnt, 1);
1818 lnet_ping_buffer_free(struct lnet_ping_buffer *pbuf)
1820 LASSERT(atomic_read(&pbuf->pb_refcnt) == 0);
1821 LIBCFS_FREE(pbuf, LNET_PING_BUFFER_SIZE(pbuf->pb_nbytes));
1824 static struct lnet_ping_buffer *
1825 lnet_ping_target_create(int nbytes)
1827 struct lnet_ping_buffer *pbuf;
1829 pbuf = lnet_ping_buffer_alloc(nbytes, GFP_NOFS);
1831 CERROR("Can't allocate ping source [%d]\n", nbytes);
1835 pbuf->pb_info.pi_nnis = 0;
1836 pbuf->pb_info.pi_pid = the_lnet.ln_pid;
1837 pbuf->pb_info.pi_magic = LNET_PROTO_PING_MAGIC;
1838 pbuf->pb_info.pi_features =
1839 LNET_PING_FEAT_NI_STATUS | LNET_PING_FEAT_MULTI_RAIL;
1845 lnet_get_net_ni_bytes_locked(struct lnet_net *net)
1850 list_for_each_entry(ni, &net->net_ni_list, ni_netlist)
1851 bytes += lnet_ping_sts_size(&ni->ni_nid);
1857 lnet_get_ni_bytes(void)
1860 struct lnet_net *net;
1865 list_for_each_entry(net, &the_lnet.ln_nets, net_list) {
1866 list_for_each_entry(ni, &net->net_ni_list, ni_netlist)
1867 bytes += lnet_ping_sts_size(&ni->ni_nid);
1876 lnet_swap_pinginfo(struct lnet_ping_buffer *pbuf)
1878 struct lnet_ni_large_status *lstat, *lend;
1879 struct lnet_ni_status *stat, *end;
1883 __swab32s(&pbuf->pb_info.pi_magic);
1884 __swab32s(&pbuf->pb_info.pi_features);
1885 __swab32s(&pbuf->pb_info.pi_pid);
1886 __swab32s(&pbuf->pb_info.pi_nnis);
1887 nnis = pbuf->pb_info.pi_nnis;
1888 stat = &pbuf->pb_info.pi_ni[0];
1889 end = (void *)&pbuf->pb_info + pbuf->pb_nbytes;
1890 for (i = 0; i < nnis && stat + 1 <= end; i++, stat++) {
1891 __swab64s(&stat->ns_nid);
1892 __swab32s(&stat->ns_status);
1894 /* Might be total size */
1895 __swab32s(&stat->ns_msg_size);
1897 if (!(pbuf->pb_info.pi_features & LNET_PING_FEAT_LARGE_ADDR))
1900 lstat = (struct lnet_ni_large_status *)stat;
1902 while (lstat + 1 <= lend) {
1903 __swab32s(&lstat->ns_status);
1904 /* struct lnet_nid never needs to be swabed */
1905 lstat = lnet_ping_sts_next(lstat);
1910 lnet_ping_info_validate(struct lnet_ping_info *pinfo)
1914 if (pinfo->pi_magic != LNET_PROTO_PING_MAGIC)
1916 if (!(pinfo->pi_features & LNET_PING_FEAT_NI_STATUS))
1918 /* Loopback is guaranteed to be present */
1919 if (pinfo->pi_nnis < 1 || pinfo->pi_nnis > lnet_interfaces_max)
1921 if (LNET_PING_INFO_LONI(pinfo) != LNET_NID_LO_0)
1927 lnet_ping_target_destroy(void)
1929 struct lnet_net *net;
1932 lnet_net_lock(LNET_LOCK_EX);
1934 list_for_each_entry(net, &the_lnet.ln_nets, net_list) {
1935 list_for_each_entry(ni, &net->net_ni_list, ni_netlist) {
1937 ni->ni_status = NULL;
1942 lnet_ping_buffer_decref(the_lnet.ln_ping_target);
1943 the_lnet.ln_ping_target = NULL;
1945 lnet_net_unlock(LNET_LOCK_EX);
1949 lnet_ping_target_event_handler(struct lnet_event *event)
1951 struct lnet_ping_buffer *pbuf = event->md_user_ptr;
1953 if (event->unlinked)
1954 lnet_ping_buffer_decref(pbuf);
1958 lnet_ping_target_setup(struct lnet_ping_buffer **ppbuf,
1959 struct lnet_handle_md *ping_mdh,
1960 int ni_bytes, bool set_eq)
1962 struct lnet_processid id = {
1963 .nid = LNET_ANY_NID,
1967 struct lnet_md md = { NULL };
1971 the_lnet.ln_ping_target_handler =
1972 lnet_ping_target_event_handler;
1974 *ppbuf = lnet_ping_target_create(ni_bytes);
1975 if (*ppbuf == NULL) {
1980 /* Ping target ME/MD */
1981 me = LNetMEAttach(LNET_RESERVED_PORTAL, &id,
1982 LNET_PROTO_PING_MATCHBITS, 0,
1983 LNET_UNLINK, LNET_INS_AFTER);
1986 CERROR("Can't create ping target ME: %d\n", rc);
1987 goto fail_decref_ping_buffer;
1990 /* initialize md content */
1991 md.start = &(*ppbuf)->pb_info;
1992 md.length = (*ppbuf)->pb_nbytes;
1993 md.threshold = LNET_MD_THRESH_INF;
1995 md.options = LNET_MD_OP_GET | LNET_MD_TRUNCATE |
1996 LNET_MD_MANAGE_REMOTE;
1997 md.handler = the_lnet.ln_ping_target_handler;
1998 md.user_ptr = *ppbuf;
2000 rc = LNetMDAttach(me, &md, LNET_RETAIN, ping_mdh);
2002 CERROR("Can't attach ping target MD: %d\n", rc);
2003 goto fail_decref_ping_buffer;
2005 lnet_ping_buffer_addref(*ppbuf);
2009 fail_decref_ping_buffer:
2010 LASSERT(atomic_read(&(*ppbuf)->pb_refcnt) == 1);
2011 lnet_ping_buffer_decref(*ppbuf);
2018 lnet_ping_md_unlink(struct lnet_ping_buffer *pbuf,
2019 struct lnet_handle_md *ping_mdh)
2021 LNetMDUnlink(*ping_mdh);
2022 LNetInvalidateMDHandle(ping_mdh);
2024 /* NB the MD could be busy; this just starts the unlink */
2025 wait_var_event_warning(&pbuf->pb_refcnt,
2026 atomic_read(&pbuf->pb_refcnt) <= 1,
2027 "Still waiting for ping data MD to unlink\n");
2031 lnet_ping_target_install_locked(struct lnet_ping_buffer *pbuf)
2034 struct lnet_net *net;
2035 struct lnet_ni_status *ns, *end;
2036 struct lnet_ni_large_status *lns, *lend;
2039 pbuf->pb_info.pi_nnis = 0;
2040 ns = &pbuf->pb_info.pi_ni[0];
2041 end = (void *)&pbuf->pb_info + pbuf->pb_nbytes;
2042 list_for_each_entry(net, &the_lnet.ln_nets, net_list) {
2043 list_for_each_entry(ni, &net->net_ni_list, ni_netlist) {
2044 if (!nid_is_nid4(&ni->ni_nid)) {
2045 if (ns == &pbuf->pb_info.pi_ni[1]) {
2046 /* This is primary, and it is long */
2047 pbuf->pb_info.pi_features |=
2048 LNET_PING_FEAT_PRIMARY_LARGE;
2052 LASSERT(ns + 1 <= end);
2053 ns->ns_nid = lnet_nid_to_nid4(&ni->ni_nid);
2056 ns->ns_status = lnet_ni_get_status_locked(ni);
2057 ni->ni_status = &ns->ns_status;
2060 pbuf->pb_info.pi_nnis++;
2067 list_for_each_entry(net, &the_lnet.ln_nets, net_list) {
2068 list_for_each_entry(ni, &net->net_ni_list, ni_netlist) {
2069 if (nid_is_nid4(&ni->ni_nid))
2071 LASSERT(lns + 1 <= lend);
2073 lns->ns_nid = ni->ni_nid;
2076 ns->ns_status = lnet_ni_get_status_locked(ni);
2077 ni->ni_status = &lns->ns_status;
2080 lns = lnet_ping_sts_next(lns);
2083 if ((void *)lns > (void *)ns) {
2084 /* Record total info size */
2085 pbuf->pb_info.pi_ni[0].ns_msg_size =
2086 (void *)lns - (void *)&pbuf->pb_info;
2087 pbuf->pb_info.pi_features |= LNET_PING_FEAT_LARGE_ADDR;
2090 /* We (ab)use the ns_status of the loopback interface to
2091 * transmit the sequence number. The first interface listed
2092 * must be the loopback interface.
2094 rc = lnet_ping_info_validate(&pbuf->pb_info);
2096 LCONSOLE_EMERG("Invalid ping target: %d\n", rc);
2099 LNET_PING_BUFFER_SEQNO(pbuf) =
2100 atomic_inc_return(&the_lnet.ln_ping_target_seqno);
2104 lnet_ping_target_update(struct lnet_ping_buffer *pbuf,
2105 struct lnet_handle_md ping_mdh)
2106 __must_hold(&the_lnet.ln_api_mutex)
2108 struct lnet_ping_buffer *old_pbuf = NULL;
2109 struct lnet_handle_md old_ping_md;
2111 /* switch the NIs to point to the new ping info created */
2112 lnet_net_lock(LNET_LOCK_EX);
2114 if (!the_lnet.ln_routing)
2115 pbuf->pb_info.pi_features |= LNET_PING_FEAT_RTE_DISABLED;
2116 if (!lnet_peer_discovery_disabled)
2117 pbuf->pb_info.pi_features |= LNET_PING_FEAT_DISCOVERY;
2119 /* Ensure only known feature bits have been set. */
2120 LASSERT(pbuf->pb_info.pi_features & LNET_PING_FEAT_BITS);
2121 LASSERT(!(pbuf->pb_info.pi_features & ~LNET_PING_FEAT_BITS));
2123 lnet_ping_target_install_locked(pbuf);
2125 if (the_lnet.ln_ping_target) {
2126 old_pbuf = the_lnet.ln_ping_target;
2127 old_ping_md = the_lnet.ln_ping_target_md;
2129 the_lnet.ln_ping_target_md = ping_mdh;
2130 the_lnet.ln_ping_target = pbuf;
2132 lnet_net_unlock(LNET_LOCK_EX);
2135 /* unlink and free the old ping info.
2136 * There may be outstanding traffic on this MD, and
2137 * ln_api_mutex may be required to finalize that
2138 * traffic. Release ln_api_mutex while we wait for
2139 * refs on this ping buffer to drop
2141 mutex_unlock(&the_lnet.ln_api_mutex);
2142 lnet_ping_md_unlink(old_pbuf, &old_ping_md);
2143 mutex_lock(&the_lnet.ln_api_mutex);
2144 lnet_ping_buffer_decref(old_pbuf);
2147 lnet_push_update_to_peers(0);
2151 lnet_ping_target_fini(void)
2153 lnet_ping_md_unlink(the_lnet.ln_ping_target,
2154 &the_lnet.ln_ping_target_md);
2156 lnet_assert_handler_unused(the_lnet.ln_ping_target_handler);
2157 lnet_ping_target_destroy();
2160 /* Resize the push target. */
2161 int lnet_push_target_resize(void)
2163 struct lnet_handle_md mdh;
2164 struct lnet_handle_md old_mdh;
2165 struct lnet_ping_buffer *pbuf;
2166 struct lnet_ping_buffer *old_pbuf;
2171 nbytes = the_lnet.ln_push_target_nbytes;
2173 CDEBUG(D_NET, "Invalid nbytes %d\n", nbytes);
2177 /* NB: lnet_ping_buffer_alloc() sets pbuf refcount to 1. That ref is
2178 * dropped when we need to resize again (see "old_pbuf" below) or when
2179 * LNet is shutdown (see lnet_push_target_fini())
2181 pbuf = lnet_ping_buffer_alloc(nbytes, GFP_NOFS);
2183 CDEBUG(D_NET, "Can't allocate pbuf for nbytes %d\n", nbytes);
2187 rc = lnet_push_target_post(pbuf, &mdh);
2189 CDEBUG(D_NET, "Failed to post push target: %d\n", rc);
2190 lnet_ping_buffer_decref(pbuf);
2194 lnet_net_lock(LNET_LOCK_EX);
2195 old_pbuf = the_lnet.ln_push_target;
2196 old_mdh = the_lnet.ln_push_target_md;
2197 the_lnet.ln_push_target = pbuf;
2198 the_lnet.ln_push_target_md = mdh;
2199 lnet_net_unlock(LNET_LOCK_EX);
2202 LNetMDUnlink(old_mdh);
2203 /* Drop ref set by lnet_ping_buffer_alloc() */
2204 lnet_ping_buffer_decref(old_pbuf);
2207 /* Received another push or reply that requires a larger buffer */
2208 if (nbytes < the_lnet.ln_push_target_nbytes)
2211 CDEBUG(D_NET, "nbytes %d success\n", nbytes);
2215 int lnet_push_target_post(struct lnet_ping_buffer *pbuf,
2216 struct lnet_handle_md *mdhp)
2218 struct lnet_processid id = { LNET_ANY_NID, LNET_PID_ANY };
2219 struct lnet_md md = { NULL };
2223 me = LNetMEAttach(LNET_RESERVED_PORTAL, &id,
2224 LNET_PROTO_PING_MATCHBITS, 0,
2225 LNET_UNLINK, LNET_INS_AFTER);
2228 CERROR("Can't create push target ME: %d\n", rc);
2232 pbuf->pb_needs_post = false;
2234 /* This reference is dropped by lnet_push_target_event_handler() */
2235 lnet_ping_buffer_addref(pbuf);
2237 /* initialize md content */
2238 md.start = &pbuf->pb_info;
2239 md.length = pbuf->pb_nbytes;
2242 md.options = LNET_MD_OP_PUT | LNET_MD_TRUNCATE;
2244 md.handler = the_lnet.ln_push_target_handler;
2246 rc = LNetMDAttach(me, &md, LNET_UNLINK, mdhp);
2248 CERROR("Can't attach push MD: %d\n", rc);
2249 lnet_ping_buffer_decref(pbuf);
2250 pbuf->pb_needs_post = true;
2254 CDEBUG(D_NET, "posted push target %p\n", pbuf);
2259 static void lnet_push_target_event_handler(struct lnet_event *ev)
2261 struct lnet_ping_buffer *pbuf = ev->md_user_ptr;
2263 CDEBUG(D_NET, "type %d status %d unlinked %d\n", ev->type, ev->status,
2266 if (pbuf->pb_info.pi_magic == __swab32(LNET_PROTO_PING_MAGIC))
2267 lnet_swap_pinginfo(pbuf);
2269 if (ev->type == LNET_EVENT_UNLINK) {
2270 /* Drop ref added by lnet_push_target_post() */
2271 lnet_ping_buffer_decref(pbuf);
2275 lnet_peer_push_event(ev);
2277 /* Drop ref added by lnet_push_target_post */
2278 lnet_ping_buffer_decref(pbuf);
2281 /* Initialize the push target. */
2282 static int lnet_push_target_init(void)
2286 if (the_lnet.ln_push_target)
2289 the_lnet.ln_push_target_handler =
2290 lnet_push_target_event_handler;
2292 rc = LNetSetLazyPortal(LNET_RESERVED_PORTAL);
2295 /* Start at the required minimum, we'll enlarge if required. */
2296 the_lnet.ln_push_target_nbytes = LNET_PING_INFO_MIN_SIZE;
2298 rc = lnet_push_target_resize();
2300 LNetClearLazyPortal(LNET_RESERVED_PORTAL);
2301 the_lnet.ln_push_target_handler = NULL;
2307 /* Clean up the push target. */
2308 static void lnet_push_target_fini(void)
2310 if (!the_lnet.ln_push_target)
2313 /* Unlink and invalidate to prevent new references. */
2314 LNetMDUnlink(the_lnet.ln_push_target_md);
2315 LNetInvalidateMDHandle(&the_lnet.ln_push_target_md);
2317 /* Wait for the unlink to complete. */
2318 wait_var_event_warning(&the_lnet.ln_push_target->pb_refcnt,
2319 atomic_read(&the_lnet.ln_push_target->pb_refcnt) <= 1,
2320 "Still waiting for ping data MD to unlink\n");
2322 /* Drop ref set by lnet_ping_buffer_alloc() */
2323 lnet_ping_buffer_decref(the_lnet.ln_push_target);
2324 the_lnet.ln_push_target = NULL;
2325 the_lnet.ln_push_target_nbytes = 0;
2327 LNetClearLazyPortal(LNET_RESERVED_PORTAL);
2328 lnet_assert_handler_unused(the_lnet.ln_push_target_handler);
2329 the_lnet.ln_push_target_handler = NULL;
2333 lnet_ni_tq_credits(struct lnet_ni *ni)
2337 LASSERT(ni->ni_ncpts >= 1);
2339 if (ni->ni_ncpts == 1)
2340 return ni->ni_net->net_tunables.lct_max_tx_credits;
2342 credits = ni->ni_net->net_tunables.lct_max_tx_credits / ni->ni_ncpts;
2343 credits = max(credits, 8 * ni->ni_net->net_tunables.lct_peer_tx_credits);
2344 credits = min(credits, ni->ni_net->net_tunables.lct_max_tx_credits);
2350 lnet_ni_unlink_locked(struct lnet_ni *ni)
2352 /* move it to zombie list and nobody can find it anymore */
2353 LASSERT(!list_empty(&ni->ni_netlist));
2354 list_move(&ni->ni_netlist, &ni->ni_net->net_ni_zombie);
2355 lnet_ni_decref_locked(ni, 0);
2359 lnet_clear_zombies_nis_locked(struct lnet_net *net)
2364 struct list_head *zombie_list = &net->net_ni_zombie;
2367 * Now wait for the NIs I just nuked to show up on the zombie
2368 * list and shut them down in guaranteed thread context
2371 while ((ni = list_first_entry_or_null(zombie_list,
2373 ni_netlist)) != NULL) {
2377 list_del_init(&ni->ni_netlist);
2378 /* the ni should be in deleting state. If it's not it's
2380 LASSERT(ni->ni_state == LNET_NI_STATE_DELETING);
2381 cfs_percpt_for_each(ref, j, ni->ni_refs) {
2384 /* still busy, add it back to zombie list */
2385 list_add(&ni->ni_netlist, zombie_list);
2389 if (!list_empty(&ni->ni_netlist)) {
2390 /* Unlock mutex while waiting to allow other
2391 * threads to read the LNet state and fall through
2394 lnet_net_unlock(LNET_LOCK_EX);
2395 mutex_unlock(&the_lnet.ln_api_mutex);
2398 if ((i & (-i)) == i) {
2400 "Waiting for zombie LNI %s\n",
2401 libcfs_nidstr(&ni->ni_nid));
2403 schedule_timeout_uninterruptible(cfs_time_seconds(1));
2405 mutex_lock(&the_lnet.ln_api_mutex);
2406 lnet_net_lock(LNET_LOCK_EX);
2410 lnet_net_unlock(LNET_LOCK_EX);
2412 islo = ni->ni_net->net_lnd->lnd_type == LOLND;
2414 LASSERT(!in_interrupt());
2415 /* Holding the LND mutex makes it safe for lnd_shutdown
2416 * to call module_put(). Module unload cannot finish
2417 * until lnet_unregister_lnd() completes, and that
2418 * requires the LND mutex.
2420 mutex_unlock(&the_lnet.ln_api_mutex);
2421 mutex_lock(&the_lnet.ln_lnd_mutex);
2422 (net->net_lnd->lnd_shutdown)(ni);
2423 mutex_unlock(&the_lnet.ln_lnd_mutex);
2424 mutex_lock(&the_lnet.ln_api_mutex);
2427 CDEBUG(D_LNI, "Removed LNI %s\n",
2428 libcfs_nidstr(&ni->ni_nid));
2432 lnet_net_lock(LNET_LOCK_EX);
2436 /* shutdown down the NI and release refcount */
2438 lnet_shutdown_lndni(struct lnet_ni *ni)
2441 struct lnet_net *net = ni->ni_net;
2443 lnet_net_lock(LNET_LOCK_EX);
2445 ni->ni_state = LNET_NI_STATE_DELETING;
2447 lnet_ni_unlink_locked(ni);
2448 lnet_incr_dlc_seq();
2449 lnet_net_unlock(LNET_LOCK_EX);
2451 /* clear messages for this NI on the lazy portal */
2452 for (i = 0; i < the_lnet.ln_nportals; i++)
2453 lnet_clear_lazy_portal(ni, i, "Shutting down NI");
2455 lnet_net_lock(LNET_LOCK_EX);
2456 lnet_clear_zombies_nis_locked(net);
2457 lnet_net_unlock(LNET_LOCK_EX);
2461 lnet_shutdown_lndnet(struct lnet_net *net)
2465 lnet_net_lock(LNET_LOCK_EX);
2467 list_del_init(&net->net_list);
2469 while ((ni = list_first_entry_or_null(&net->net_ni_list,
2471 ni_netlist)) != NULL) {
2472 lnet_net_unlock(LNET_LOCK_EX);
2473 lnet_shutdown_lndni(ni);
2474 lnet_net_lock(LNET_LOCK_EX);
2477 lnet_net_unlock(LNET_LOCK_EX);
2479 /* Do peer table cleanup for this net */
2480 lnet_peer_tables_cleanup(net);
2486 lnet_shutdown_lndnets(void)
2488 struct lnet_net *net;
2490 struct lnet_msg *msg, *tmp;
2492 /* NB called holding the global mutex */
2494 /* All quiet on the API front */
2495 LASSERT(the_lnet.ln_state == LNET_STATE_RUNNING ||
2496 the_lnet.ln_state == LNET_STATE_STOPPING);
2497 LASSERT(the_lnet.ln_refcount == 0);
2499 lnet_net_lock(LNET_LOCK_EX);
2500 the_lnet.ln_state = LNET_STATE_STOPPING;
2503 * move the nets to the zombie list to avoid them being
2504 * picked up for new work. LONET is also included in the
2505 * Nets that will be moved to the zombie list
2507 list_splice_init(&the_lnet.ln_nets, &the_lnet.ln_net_zombie);
2509 /* Drop the cached loopback Net. */
2510 if (the_lnet.ln_loni != NULL) {
2511 lnet_ni_decref_locked(the_lnet.ln_loni, 0);
2512 the_lnet.ln_loni = NULL;
2514 lnet_net_unlock(LNET_LOCK_EX);
2516 /* iterate through the net zombie list and delete each net */
2517 while ((net = list_first_entry_or_null(&the_lnet.ln_net_zombie,
2520 lnet_shutdown_lndnet(net);
2522 spin_lock(&the_lnet.ln_msg_resend_lock);
2523 list_splice(&the_lnet.ln_msg_resend, &resend);
2524 spin_unlock(&the_lnet.ln_msg_resend_lock);
2526 list_for_each_entry_safe(msg, tmp, &resend, msg_list) {
2527 list_del_init(&msg->msg_list);
2528 msg->msg_no_resend = true;
2529 lnet_finalize(msg, -ECANCELED);
2532 lnet_net_lock(LNET_LOCK_EX);
2533 the_lnet.ln_state = LNET_STATE_SHUTDOWN;
2534 lnet_net_unlock(LNET_LOCK_EX);
2538 lnet_startup_lndni(struct lnet_ni *ni, struct lnet_lnd_tunables *tun)
2541 struct lnet_tx_queue *tq;
2543 struct lnet_net *net = ni->ni_net;
2545 mutex_lock(&the_lnet.ln_lnd_mutex);
2548 memcpy(&ni->ni_lnd_tunables, tun, sizeof(*tun));
2549 ni->ni_lnd_tunables_set = true;
2552 rc = (net->net_lnd->lnd_startup)(ni);
2554 mutex_unlock(&the_lnet.ln_lnd_mutex);
2557 LCONSOLE_ERROR_MSG(0x105, "Error %d starting up LNI %s\n",
2558 rc, libcfs_lnd2str(net->net_lnd->lnd_type));
2562 /* We keep a reference on the loopback net through the loopback NI */
2563 if (net->net_lnd->lnd_type == LOLND) {
2565 LASSERT(the_lnet.ln_loni == NULL);
2566 the_lnet.ln_loni = ni;
2567 ni->ni_net->net_tunables.lct_peer_tx_credits = 0;
2568 ni->ni_net->net_tunables.lct_peer_rtr_credits = 0;
2569 ni->ni_net->net_tunables.lct_max_tx_credits = 0;
2570 ni->ni_net->net_tunables.lct_peer_timeout = 0;
2574 if (ni->ni_net->net_tunables.lct_peer_tx_credits == 0 ||
2575 ni->ni_net->net_tunables.lct_max_tx_credits == 0) {
2576 LCONSOLE_ERROR_MSG(0x107, "LNI %s has no %scredits\n",
2577 libcfs_lnd2str(net->net_lnd->lnd_type),
2578 ni->ni_net->net_tunables.lct_peer_tx_credits == 0 ?
2580 /* shutdown the NI since if we get here then it must've already
2583 lnet_shutdown_lndni(ni);
2587 cfs_percpt_for_each(tq, i, ni->ni_tx_queues) {
2588 tq->tq_credits_min =
2589 tq->tq_credits_max =
2590 tq->tq_credits = lnet_ni_tq_credits(ni);
2593 atomic_set(&ni->ni_tx_credits,
2594 lnet_ni_tq_credits(ni) * ni->ni_ncpts);
2595 atomic_set(&ni->ni_healthv, LNET_MAX_HEALTH_VALUE);
2597 /* Nodes with small feet have little entropy. The NID for this
2598 * node gives the most entropy in the low bits.
2600 add_device_randomness(&ni->ni_nid, sizeof(ni->ni_nid));
2602 CDEBUG(D_LNI, "Added LNI %s [%d/%d/%d/%d]\n",
2603 libcfs_nidstr(&ni->ni_nid),
2604 ni->ni_net->net_tunables.lct_peer_tx_credits,
2605 lnet_ni_tq_credits(ni) * LNET_CPT_NUMBER,
2606 ni->ni_net->net_tunables.lct_peer_rtr_credits,
2607 ni->ni_net->net_tunables.lct_peer_timeout);
2615 static const struct lnet_lnd *lnet_load_lnd(u32 lnd_type)
2617 const struct lnet_lnd *lnd;
2620 mutex_lock(&the_lnet.ln_lnd_mutex);
2621 lnd = lnet_find_lnd_by_type(lnd_type);
2623 mutex_unlock(&the_lnet.ln_lnd_mutex);
2624 rc = request_module("%s", libcfs_lnd2modname(lnd_type));
2625 mutex_lock(&the_lnet.ln_lnd_mutex);
2627 lnd = lnet_find_lnd_by_type(lnd_type);
2629 mutex_unlock(&the_lnet.ln_lnd_mutex);
2630 CERROR("Can't load LND %s, module %s, rc=%d\n",
2631 libcfs_lnd2str(lnd_type),
2632 libcfs_lnd2modname(lnd_type), rc);
2633 #ifndef HAVE_MODULE_LOADING_SUPPORT
2634 LCONSOLE_ERROR_MSG(0x104,
2635 "Your kernel must be compiled with kernel module loading support.");
2637 return ERR_PTR(-EINVAL);
2640 mutex_unlock(&the_lnet.ln_lnd_mutex);
2646 lnet_startup_lndnet(struct lnet_net *net, struct lnet_lnd_tunables *tun)
2649 struct lnet_net *net_l = NULL;
2650 LIST_HEAD(local_ni_list);
2654 const struct lnet_lnd *lnd;
2656 net->net_tunables.lct_peer_timeout;
2658 net->net_tunables.lct_max_tx_credits;
2659 int peerrtrcredits =
2660 net->net_tunables.lct_peer_rtr_credits;
2663 * make sure that this net is unique. If it isn't then
2664 * we are adding interfaces to an already existing network, and
2665 * 'net' is just a convenient way to pass in the list.
2666 * if it is unique we need to find the LND and load it if
2669 if (lnet_net_unique(net->net_id, &the_lnet.ln_nets, &net_l)) {
2670 lnd_type = LNET_NETTYP(net->net_id);
2672 lnd = lnet_load_lnd(lnd_type);
2678 mutex_lock(&the_lnet.ln_lnd_mutex);
2680 mutex_unlock(&the_lnet.ln_lnd_mutex);
2686 * net_l: if the network being added is unique then net_l
2687 * will point to that network
2688 * if the network being added is not unique then
2689 * net_l points to the existing network.
2691 * When we enter the loop below, we'll pick NIs off he
2692 * network beign added and start them up, then add them to
2693 * a local ni list. Once we've successfully started all
2694 * the NIs then we join the local NI list (of started up
2695 * networks) with the net_l->net_ni_list, which should
2696 * point to the correct network to add the new ni list to
2698 * If any of the new NIs fail to start up, then we want to
2699 * iterate through the local ni list, which should include
2700 * any NIs which were successfully started up, and shut
2703 * After than we want to delete the network being added,
2704 * to avoid a memory leak.
2706 while ((ni = list_first_entry_or_null(&net->net_ni_added,
2708 ni_netlist)) != NULL) {
2709 list_del_init(&ni->ni_netlist);
2711 /* make sure that the the NI we're about to start
2712 * up is actually unique. if it's not fail. */
2713 if (!lnet_ni_unique_net(&net_l->net_ni_list,
2714 ni->ni_interface)) {
2719 /* adjust the pointer the parent network, just in case it
2720 * the net is a duplicate */
2723 rc = lnet_startup_lndni(ni, tun);
2729 list_add_tail(&ni->ni_netlist, &local_ni_list);
2734 lnet_net_lock(LNET_LOCK_EX);
2735 list_splice_tail(&local_ni_list, &net_l->net_ni_list);
2736 lnet_incr_dlc_seq();
2738 list_for_each_entry(ni, &net_l->net_ni_list, ni_netlist) {
2742 ni->ni_state = LNET_NI_STATE_ACTIVE;
2745 lnet_net_unlock(LNET_LOCK_EX);
2747 /* if the network is not unique then we don't want to keep
2748 * it around after we're done. Free it. Otherwise add that
2749 * net to the global the_lnet.ln_nets */
2750 if (net_l != net && net_l != NULL) {
2752 * TODO - note. currently the tunables can not be updated
2758 * restore tunables after it has been overwitten by the
2761 if (peer_timeout != -1)
2762 net->net_tunables.lct_peer_timeout = peer_timeout;
2763 if (maxtxcredits != -1)
2764 net->net_tunables.lct_max_tx_credits = maxtxcredits;
2765 if (peerrtrcredits != -1)
2766 net->net_tunables.lct_peer_rtr_credits = peerrtrcredits;
2768 lnet_net_lock(LNET_LOCK_EX);
2769 list_add_tail(&net->net_list, &the_lnet.ln_nets);
2770 lnet_net_unlock(LNET_LOCK_EX);
2777 * shutdown the new NIs that are being started up
2778 * free the NET being started
2780 while ((ni = list_first_entry_or_null(&local_ni_list,
2782 ni_netlist)) != NULL)
2783 lnet_shutdown_lndni(ni);
2792 lnet_startup_lndnets(struct list_head *netlist)
2794 struct lnet_net *net;
2799 * Change to running state before bringing up the LNDs. This
2800 * allows lnet_shutdown_lndnets() to assert that we've passed
2803 lnet_net_lock(LNET_LOCK_EX);
2804 the_lnet.ln_state = LNET_STATE_RUNNING;
2805 lnet_net_unlock(LNET_LOCK_EX);
2807 while ((net = list_first_entry_or_null(netlist,
2809 net_list)) != NULL) {
2810 list_del_init(&net->net_list);
2812 rc = lnet_startup_lndnet(net, NULL);
2822 lnet_shutdown_lndnets();
2827 static int lnet_genl_parse_list(struct sk_buff *msg,
2828 const struct ln_key_list *data[], u16 idx)
2830 const struct ln_key_list *list = data[idx];
2831 const struct ln_key_props *props;
2832 struct nlattr *node;
2838 if (!list->lkl_maxattr)
2841 props = list->lkl_list;
2845 node = nla_nest_start(msg, LN_SCALAR_ATTR_LIST);
2849 for (count = 1; count <= list->lkl_maxattr; count++) {
2850 struct nlattr *key = nla_nest_start(msg, count);
2853 nla_put_u16(msg, LN_SCALAR_ATTR_LIST_SIZE,
2856 nla_put_u16(msg, LN_SCALAR_ATTR_INDEX, count);
2857 if (props[count].lkp_value)
2858 nla_put_string(msg, LN_SCALAR_ATTR_VALUE,
2859 props[count].lkp_value);
2860 if (props[count].lkp_key_format)
2861 nla_put_u16(msg, LN_SCALAR_ATTR_KEY_FORMAT,
2862 props[count].lkp_key_format);
2863 nla_put_u16(msg, LN_SCALAR_ATTR_NLA_TYPE,
2864 props[count].lkp_data_type);
2865 if (props[count].lkp_data_type == NLA_NESTED) {
2868 rc = lnet_genl_parse_list(msg, data, ++idx);
2874 nla_nest_end(msg, key);
2877 nla_nest_end(msg, node);
2881 int lnet_genl_send_scalar_list(struct sk_buff *msg, u32 portid, u32 seq,
2882 const struct genl_family *family, int flags,
2883 u8 cmd, const struct ln_key_list *data[])
2891 hdr = genlmsg_put(msg, portid, seq, family, flags, cmd);
2893 GOTO(canceled, rc = -EMSGSIZE);
2895 rc = lnet_genl_parse_list(msg, data, 0);
2899 genlmsg_end(msg, hdr);
2902 genlmsg_cancel(msg, hdr);
2903 return rc > 0 ? 0 : rc;
2905 EXPORT_SYMBOL(lnet_genl_send_scalar_list);
2907 static struct genl_family lnet_family;
2910 * Initialize LNet library.
2912 * Automatically called at module loading time. Caller has to call
2913 * lnet_lib_exit() after a call to lnet_lib_init(), if and only if the
2914 * latter returned 0. It must be called exactly once.
2916 * \retval 0 on success
2917 * \retval -ve on failures.
2919 int lnet_lib_init(void)
2923 lnet_assert_wire_constants();
2925 /* refer to global cfs_cpt_table for now */
2926 the_lnet.ln_cpt_table = cfs_cpt_tab;
2927 the_lnet.ln_cpt_number = cfs_cpt_number(cfs_cpt_tab);
2929 LASSERT(the_lnet.ln_cpt_number > 0);
2930 if (the_lnet.ln_cpt_number > LNET_CPT_MAX) {
2931 /* we are under risk of consuming all lh_cookie */
2932 CERROR("Can't have %d CPTs for LNet (max allowed is %d), "
2933 "please change setting of CPT-table and retry\n",
2934 the_lnet.ln_cpt_number, LNET_CPT_MAX);
2938 while ((1 << the_lnet.ln_cpt_bits) < the_lnet.ln_cpt_number)
2939 the_lnet.ln_cpt_bits++;
2941 rc = lnet_create_locks();
2943 CERROR("Can't create LNet global locks: %d\n", rc);
2947 rc = genl_register_family(&lnet_family);
2949 lnet_destroy_locks();
2950 CERROR("Can't register LNet netlink family: %d\n", rc);
2954 the_lnet.ln_refcount = 0;
2955 INIT_LIST_HEAD(&the_lnet.ln_net_zombie);
2956 INIT_LIST_HEAD(&the_lnet.ln_msg_resend);
2958 /* The hash table size is the number of bits it takes to express the set
2959 * ln_num_routes, minus 1 (better to under estimate than over so we
2960 * don't waste memory). */
2961 if (rnet_htable_size <= 0)
2962 rnet_htable_size = LNET_REMOTE_NETS_HASH_DEFAULT;
2963 else if (rnet_htable_size > LNET_REMOTE_NETS_HASH_MAX)
2964 rnet_htable_size = LNET_REMOTE_NETS_HASH_MAX;
2965 the_lnet.ln_remote_nets_hbits = max_t(int, 1,
2966 order_base_2(rnet_htable_size) - 1);
2968 /* All LNDs apart from the LOLND are in separate modules. They
2969 * register themselves when their module loads, and unregister
2970 * themselves when their module is unloaded. */
2971 lnet_register_lnd(&the_lolnd);
2976 * Finalize LNet library.
2978 * \pre lnet_lib_init() called with success.
2979 * \pre All LNet users called LNetNIFini() for matching LNetNIInit() calls.
2981 * As this happens at module-unload, all lnds must already be unloaded,
2982 * so they must already be unregistered.
2984 void lnet_lib_exit(void)
2988 LASSERT(the_lnet.ln_refcount == 0);
2989 lnet_unregister_lnd(&the_lolnd);
2990 for (i = 0; i < NUM_LNDS; i++)
2991 LASSERT(!the_lnet.ln_lnds[i]);
2992 lnet_destroy_locks();
2993 genl_unregister_family(&lnet_family);
2997 * Set LNet PID and start LNet interfaces, routing, and forwarding.
2999 * Users must call this function at least once before any other functions.
3000 * For each successful call there must be a corresponding call to
3001 * LNetNIFini(). For subsequent calls to LNetNIInit(), \a requested_pid is
3004 * The PID used by LNet may be different from the one requested.
3007 * \param requested_pid PID requested by the caller.
3009 * \return >= 0 on success, and < 0 error code on failures.
3012 LNetNIInit(lnet_pid_t requested_pid)
3014 int im_a_router = 0;
3017 struct lnet_ping_buffer *pbuf;
3018 struct lnet_handle_md ping_mdh;
3019 LIST_HEAD(net_head);
3020 struct lnet_net *net;
3022 mutex_lock(&the_lnet.ln_api_mutex);
3024 CDEBUG(D_OTHER, "refs %d\n", the_lnet.ln_refcount);
3026 if (the_lnet.ln_state == LNET_STATE_STOPPING) {
3027 mutex_unlock(&the_lnet.ln_api_mutex);
3031 if (the_lnet.ln_refcount > 0) {
3032 rc = the_lnet.ln_refcount++;
3033 mutex_unlock(&the_lnet.ln_api_mutex);
3037 rc = lnet_prepare(requested_pid);
3039 mutex_unlock(&the_lnet.ln_api_mutex);
3043 /* create a network for Loopback network */
3044 net = lnet_net_alloc(LNET_MKNET(LOLND, 0), &net_head);
3047 goto err_empty_list;
3050 /* Add in the loopback NI */
3051 if (lnet_ni_alloc(net, NULL, NULL) == NULL) {
3053 goto err_empty_list;
3056 if (use_tcp_bonding)
3057 CWARN("use_tcp_bonding has been removed. Use Multi-Rail and Dynamic Discovery instead, see LU-13641\n");
3059 /* If LNet is being initialized via DLC it is possible
3060 * that the user requests not to load module parameters (ones which
3061 * are supported by DLC) on initialization. Therefore, make sure not
3062 * to load networks, routes and forwarding from module parameters
3063 * in this case. On cleanup in case of failure only clean up
3064 * routes if it has been loaded */
3065 if (!the_lnet.ln_nis_from_mod_params) {
3066 rc = lnet_parse_networks(&net_head, lnet_get_networks());
3068 goto err_empty_list;
3071 rc = lnet_startup_lndnets(&net_head);
3073 goto err_empty_list;
3075 if (!the_lnet.ln_nis_from_mod_params) {
3076 rc = lnet_parse_routes(lnet_get_routes(), &im_a_router);
3078 goto err_shutdown_lndnis;
3080 rc = lnet_rtrpools_alloc(im_a_router);
3082 goto err_destroy_routes;
3085 rc = lnet_acceptor_start();
3087 goto err_destroy_routes;
3089 the_lnet.ln_refcount = 1;
3090 /* Now I may use my own API functions... */
3092 ni_bytes = LNET_PING_INFO_HDR_SIZE;
3093 list_for_each_entry(net, &the_lnet.ln_nets, net_list)
3094 ni_bytes += lnet_get_net_ni_bytes_locked(net);
3096 rc = lnet_ping_target_setup(&pbuf, &ping_mdh, ni_bytes, true);
3098 goto err_acceptor_stop;
3100 lnet_ping_target_update(pbuf, ping_mdh);
3102 the_lnet.ln_mt_handler = lnet_mt_event_handler;
3104 rc = lnet_push_target_init();
3108 rc = lnet_monitor_thr_start();
3110 goto err_destroy_push_target;
3112 rc = lnet_peer_discovery_start();
3114 goto err_stop_monitor_thr;
3117 lnet_router_debugfs_init();
3119 mutex_unlock(&the_lnet.ln_api_mutex);
3121 complete_all(&the_lnet.ln_started);
3123 /* wait for all routers to start */
3124 lnet_wait_router_start();
3128 err_stop_monitor_thr:
3129 lnet_monitor_thr_stop();
3130 err_destroy_push_target:
3131 lnet_push_target_fini();
3133 lnet_ping_target_fini();
3135 the_lnet.ln_refcount = 0;
3136 lnet_acceptor_stop();
3138 if (!the_lnet.ln_nis_from_mod_params)
3139 lnet_destroy_routes();
3140 err_shutdown_lndnis:
3141 lnet_shutdown_lndnets();
3145 mutex_unlock(&the_lnet.ln_api_mutex);
3146 while ((net = list_first_entry_or_null(&net_head,
3148 net_list)) != NULL) {
3149 list_del_init(&net->net_list);
3154 EXPORT_SYMBOL(LNetNIInit);
3157 * Stop LNet interfaces, routing, and forwarding.
3159 * Users must call this function once for each successful call to LNetNIInit().
3160 * Once the LNetNIFini() operation has been started, the results of pending
3161 * API operations are undefined.
3163 * \return always 0 for current implementation.
3168 mutex_lock(&the_lnet.ln_api_mutex);
3170 LASSERT(the_lnet.ln_refcount > 0);
3172 if (the_lnet.ln_refcount != 1) {
3173 the_lnet.ln_refcount--;
3175 LASSERT(!the_lnet.ln_niinit_self);
3177 lnet_net_lock(LNET_LOCK_EX);
3178 the_lnet.ln_state = LNET_STATE_STOPPING;
3179 lnet_net_unlock(LNET_LOCK_EX);
3183 lnet_router_debugfs_fini();
3184 lnet_peer_discovery_stop();
3185 lnet_monitor_thr_stop();
3186 lnet_push_target_fini();
3187 lnet_ping_target_fini();
3189 /* Teardown fns that use my own API functions BEFORE here */
3190 the_lnet.ln_refcount = 0;
3192 lnet_acceptor_stop();
3193 lnet_destroy_routes();
3194 lnet_shutdown_lndnets();
3198 mutex_unlock(&the_lnet.ln_api_mutex);
3201 EXPORT_SYMBOL(LNetNIFini);
3204 * Grabs the ni data from the ni structure and fills the out
3207 * \param[in] ni network interface structure
3208 * \param[out] cfg_ni NI config information
3209 * \param[out] tun network and LND tunables
3212 lnet_fill_ni_info(struct lnet_ni *ni, struct lnet_ioctl_config_ni *cfg_ni,
3213 struct lnet_ioctl_config_lnd_tunables *tun,
3214 struct lnet_ioctl_element_stats *stats,
3217 size_t min_size = 0;
3220 if (!ni || !cfg_ni || !tun || !nid_is_nid4(&ni->ni_nid))
3223 if (ni->ni_interface != NULL) {
3224 strncpy(cfg_ni->lic_ni_intf,
3226 sizeof(cfg_ni->lic_ni_intf));
3229 cfg_ni->lic_nid = lnet_nid_to_nid4(&ni->ni_nid);
3230 cfg_ni->lic_status = lnet_ni_get_status_locked(ni);
3231 cfg_ni->lic_dev_cpt = ni->ni_dev_cpt;
3233 memcpy(&tun->lt_cmn, &ni->ni_net->net_tunables, sizeof(tun->lt_cmn));
3236 stats->iel_send_count = lnet_sum_stats(&ni->ni_stats,
3237 LNET_STATS_TYPE_SEND);
3238 stats->iel_recv_count = lnet_sum_stats(&ni->ni_stats,
3239 LNET_STATS_TYPE_RECV);
3240 stats->iel_drop_count = lnet_sum_stats(&ni->ni_stats,
3241 LNET_STATS_TYPE_DROP);
3245 * tun->lt_tun will always be present, but in order to be
3246 * backwards compatible, we need to deal with the cases when
3247 * tun->lt_tun is smaller than what the kernel has, because it
3248 * comes from an older version of a userspace program, then we'll
3249 * need to copy as much information as we have available space.
3251 min_size = tun_size - sizeof(tun->lt_cmn);
3252 memcpy(&tun->lt_tun, &ni->ni_lnd_tunables, min_size);
3254 /* copy over the cpts */
3255 if (ni->ni_ncpts == LNET_CPT_NUMBER &&
3256 ni->ni_cpts == NULL) {
3257 for (i = 0; i < ni->ni_ncpts; i++)
3258 cfg_ni->lic_cpts[i] = i;
3261 ni->ni_cpts != NULL && i < ni->ni_ncpts &&
3262 i < LNET_MAX_SHOW_NUM_CPT;
3264 cfg_ni->lic_cpts[i] = ni->ni_cpts[i];
3266 cfg_ni->lic_ncpts = ni->ni_ncpts;
3270 * NOTE: This is a legacy function left in the code to be backwards
3271 * compatible with older userspace programs. It should eventually be
3274 * Grabs the ni data from the ni structure and fills the out
3277 * \param[in] ni network interface structure
3278 * \param[out] config config information
3281 lnet_fill_ni_info_legacy(struct lnet_ni *ni,
3282 struct lnet_ioctl_config_data *config)
3284 struct lnet_ioctl_net_config *net_config;
3285 struct lnet_ioctl_config_lnd_tunables *lnd_cfg = NULL;
3286 size_t min_size, tunable_size = 0;
3289 if (!ni || !config || !nid_is_nid4(&ni->ni_nid))
3292 net_config = (struct lnet_ioctl_net_config *) config->cfg_bulk;
3296 if (!ni->ni_interface)
3299 strncpy(net_config->ni_interface,
3301 sizeof(net_config->ni_interface));
3303 config->cfg_nid = lnet_nid_to_nid4(&ni->ni_nid);
3304 config->cfg_config_u.cfg_net.net_peer_timeout =
3305 ni->ni_net->net_tunables.lct_peer_timeout;
3306 config->cfg_config_u.cfg_net.net_max_tx_credits =
3307 ni->ni_net->net_tunables.lct_max_tx_credits;
3308 config->cfg_config_u.cfg_net.net_peer_tx_credits =
3309 ni->ni_net->net_tunables.lct_peer_tx_credits;
3310 config->cfg_config_u.cfg_net.net_peer_rtr_credits =
3311 ni->ni_net->net_tunables.lct_peer_rtr_credits;
3313 net_config->ni_status = lnet_ni_get_status_locked(ni);
3316 int num_cpts = min(ni->ni_ncpts, LNET_MAX_SHOW_NUM_CPT);
3318 for (i = 0; i < num_cpts; i++)
3319 net_config->ni_cpts[i] = ni->ni_cpts[i];
3321 config->cfg_ncpts = num_cpts;
3325 * See if user land tools sent in a newer and larger version
3326 * of struct lnet_tunables than what the kernel uses.
3328 min_size = sizeof(*config) + sizeof(*net_config);
3330 if (config->cfg_hdr.ioc_len > min_size)
3331 tunable_size = config->cfg_hdr.ioc_len - min_size;
3333 /* Don't copy too much data to user space */
3334 min_size = min(tunable_size, sizeof(ni->ni_lnd_tunables));
3335 lnd_cfg = (struct lnet_ioctl_config_lnd_tunables *)net_config->cfg_bulk;
3337 if (lnd_cfg && min_size) {
3338 memcpy(&lnd_cfg->lt_tun, &ni->ni_lnd_tunables, min_size);
3339 config->cfg_config_u.cfg_net.net_interface_count = 1;
3341 /* Tell user land that kernel side has less data */
3342 if (tunable_size > sizeof(ni->ni_lnd_tunables)) {
3343 min_size = tunable_size - sizeof(ni->ni_lnd_tunables);
3344 config->cfg_hdr.ioc_len -= min_size;
3350 lnet_get_ni_idx_locked(int idx)
3353 struct lnet_net *net;
3355 list_for_each_entry(net, &the_lnet.ln_nets, net_list) {
3356 list_for_each_entry(ni, &net->net_ni_list, ni_netlist) {
3365 int lnet_get_net_healthv_locked(struct lnet_net *net)
3368 int best_healthv = 0;
3369 int healthv, ni_fatal;
3371 list_for_each_entry(ni, &net->net_ni_list, ni_netlist) {
3372 healthv = atomic_read(&ni->ni_healthv);
3373 ni_fatal = atomic_read(&ni->ni_fatal_error_on);
3374 if (!ni_fatal && healthv > best_healthv)
3375 best_healthv = healthv;
3378 return best_healthv;
3382 lnet_get_next_ni_locked(struct lnet_net *mynet, struct lnet_ni *prev)
3385 struct lnet_net *net = mynet;
3388 * It is possible that the net has been cleaned out while there is
3389 * a message being sent. This function accessed the net without
3390 * checking if the list is empty
3394 net = list_first_entry(&the_lnet.ln_nets,
3397 if (list_empty(&net->net_ni_list))
3399 ni = list_first_entry(&net->net_ni_list, struct lnet_ni,
3405 if (prev->ni_netlist.next == &prev->ni_net->net_ni_list) {
3406 /* if you reached the end of the ni list and the net is
3407 * specified, then there are no more nis in that net */
3411 /* we reached the end of this net ni list. move to the
3413 if (prev->ni_net->net_list.next == &the_lnet.ln_nets)
3414 /* no more nets and no more NIs. */
3417 /* get the next net */
3418 net = list_first_entry(&prev->ni_net->net_list, struct lnet_net,
3420 if (list_empty(&net->net_ni_list))
3422 /* get the ni on it */
3423 ni = list_first_entry(&net->net_ni_list, struct lnet_ni,
3429 if (list_empty(&prev->ni_netlist))
3432 /* there are more nis left */
3433 ni = list_first_entry(&prev->ni_netlist, struct lnet_ni, ni_netlist);
3439 lnet_get_net_config(struct lnet_ioctl_config_data *config)
3444 int idx = config->cfg_count;
3446 cpt = lnet_net_lock_current();
3448 ni = lnet_get_ni_idx_locked(idx);
3453 lnet_fill_ni_info_legacy(ni, config);
3457 lnet_net_unlock(cpt);
3462 lnet_get_ni_config(struct lnet_ioctl_config_ni *cfg_ni,
3463 struct lnet_ioctl_config_lnd_tunables *tun,
3464 struct lnet_ioctl_element_stats *stats,
3471 if (!cfg_ni || !tun || !stats)
3474 cpt = lnet_net_lock_current();
3476 ni = lnet_get_ni_idx_locked(cfg_ni->lic_idx);
3481 lnet_fill_ni_info(ni, cfg_ni, tun, stats, tun_size);
3485 lnet_net_unlock(cpt);
3489 static int lnet_get_ni_stats(struct lnet_ioctl_element_msg_stats *msg_stats)
3497 ni = lnet_get_ni_idx_locked(msg_stats->im_idx);
3500 lnet_usr_translate_stats(msg_stats, &ni->ni_stats);
3507 static int lnet_add_net_common(struct lnet_net *net,
3508 struct lnet_ioctl_config_lnd_tunables *tun)
3510 struct lnet_handle_md ping_mdh;
3511 struct lnet_ping_buffer *pbuf;
3512 struct lnet_remotenet *rnet;
3517 lnet_net_lock(LNET_LOCK_EX);
3518 rnet = lnet_find_rnet_locked(net->net_id);
3519 lnet_net_unlock(LNET_LOCK_EX);
3521 * make sure that the net added doesn't invalidate the current
3522 * configuration LNet is keeping
3525 CERROR("Adding net %s will invalidate routing configuration\n",
3526 libcfs_net2str(net->net_id));
3532 memcpy(&net->net_tunables,
3533 &tun->lt_cmn, sizeof(net->net_tunables));
3535 memset(&net->net_tunables, -1, sizeof(net->net_tunables));
3537 net_id = net->net_id;
3539 rc = lnet_startup_lndnet(net,
3540 (tun) ? &tun->lt_tun : NULL);
3544 /* make sure you calculate the correct number of slots in the ping
3545 * buffer. Since the ping info is a flattened list of all the NIs,
3546 * we should allocate enough slots to accomodate the number of NIs
3547 * which will be added.
3549 rc = lnet_ping_target_setup(&pbuf, &ping_mdh,
3550 LNET_PING_INFO_HDR_SIZE +
3551 lnet_get_ni_bytes(),
3554 lnet_shutdown_lndnet(net);
3558 lnet_net_lock(LNET_LOCK_EX);
3559 net = lnet_get_net_locked(net_id);
3562 /* apply the UDSPs */
3563 rc = lnet_udsp_apply_policies_on_net(net);
3565 CERROR("Failed to apply UDSPs on local net %s\n",
3566 libcfs_net2str(net->net_id));
3568 /* At this point we lost track of which NI was just added, so we
3569 * just re-apply the policies on all of the NIs on this net
3571 list_for_each_entry(ni, &net->net_ni_list, ni_netlist) {
3572 rc = lnet_udsp_apply_policies_on_ni(ni);
3574 CERROR("Failed to apply UDSPs on ni %s\n",
3575 libcfs_nidstr(&ni->ni_nid));
3577 lnet_net_unlock(LNET_LOCK_EX);
3580 * Start the acceptor thread if this is the first network
3581 * being added that requires the thread.
3583 if (net->net_lnd->lnd_accept) {
3584 rc = lnet_acceptor_start();
3586 /* shutdown the net that we just started */
3587 CERROR("Failed to start up acceptor thread\n");
3588 lnet_shutdown_lndnet(net);
3593 lnet_net_lock(LNET_LOCK_EX);
3594 lnet_peer_net_added(net);
3595 lnet_net_unlock(LNET_LOCK_EX);
3597 lnet_ping_target_update(pbuf, ping_mdh);
3602 lnet_ping_md_unlink(pbuf, &ping_mdh);
3603 lnet_ping_buffer_decref(pbuf);
3608 lnet_set_tune_defaults(struct lnet_ioctl_config_lnd_tunables *tun)
3611 if (tun->lt_cmn.lct_peer_timeout < 0)
3612 tun->lt_cmn.lct_peer_timeout = DEFAULT_PEER_TIMEOUT;
3613 if (!tun->lt_cmn.lct_peer_tx_credits)
3614 tun->lt_cmn.lct_peer_tx_credits = DEFAULT_PEER_CREDITS;
3615 if (!tun->lt_cmn.lct_max_tx_credits)
3616 tun->lt_cmn.lct_max_tx_credits = DEFAULT_CREDITS;
3620 static int lnet_handle_legacy_ip2nets(char *ip2nets,
3621 struct lnet_ioctl_config_lnd_tunables *tun)
3623 struct lnet_net *net;
3626 LIST_HEAD(net_head);
3628 rc = lnet_parse_ip2nets(&nets, ip2nets);
3632 rc = lnet_parse_networks(&net_head, nets);
3636 lnet_set_tune_defaults(tun);
3638 mutex_lock(&the_lnet.ln_api_mutex);
3639 if (the_lnet.ln_state != LNET_STATE_RUNNING) {
3644 while ((net = list_first_entry_or_null(&net_head,
3646 net_list)) != NULL) {
3647 list_del_init(&net->net_list);
3648 rc = lnet_add_net_common(net, tun);
3654 mutex_unlock(&the_lnet.ln_api_mutex);
3656 while ((net = list_first_entry_or_null(&net_head,
3658 net_list)) != NULL) {
3659 list_del_init(&net->net_list);
3665 int lnet_dyn_add_ni(struct lnet_ioctl_config_ni *conf, u32 net_id,
3666 struct lnet_ioctl_config_lnd_tunables *tun)
3668 struct lnet_net *net;
3673 /* handle legacy ip2nets from DLC */
3674 if (conf->lic_legacy_ip2nets[0] != '\0')
3675 return lnet_handle_legacy_ip2nets(conf->lic_legacy_ip2nets,
3678 lnd_type = LNET_NETTYP(net_id);
3680 if (!libcfs_isknown_lnd(lnd_type)) {
3681 CERROR("No valid net and lnd information provided\n");
3685 net = lnet_net_alloc(net_id, NULL);
3689 for (i = 0; i < conf->lic_ncpts; i++) {
3690 if (conf->lic_cpts[i] >= LNET_CPT_NUMBER) {
3696 ni = lnet_ni_alloc_w_cpt_array(net, conf->lic_cpts, conf->lic_ncpts,
3703 lnet_set_tune_defaults(tun);
3705 mutex_lock(&the_lnet.ln_api_mutex);
3706 if (the_lnet.ln_state != LNET_STATE_RUNNING) {
3710 rc = lnet_add_net_common(net, tun);
3713 mutex_unlock(&the_lnet.ln_api_mutex);
3715 /* If NI already exist delete this new unused copy */
3722 int lnet_dyn_del_ni(struct lnet_nid *nid)
3724 struct lnet_net *net;
3726 u32 net_id = LNET_NID_NET(nid);
3727 struct lnet_ping_buffer *pbuf;
3728 struct lnet_handle_md ping_mdh;
3732 /* don't allow userspace to shutdown the LOLND */
3733 if (LNET_NETTYP(net_id) == LOLND)
3736 mutex_lock(&the_lnet.ln_api_mutex);
3737 if (the_lnet.ln_state != LNET_STATE_RUNNING) {
3739 goto unlock_api_mutex;
3744 net = lnet_get_net_locked(net_id);
3746 CERROR("net %s not found\n",
3747 libcfs_net2str(net_id));
3752 if (!nid_addr_is_set(nid)) {
3753 /* remove the entire net */
3754 net_bytes = lnet_get_net_ni_bytes_locked(net);
3758 /* create and link a new ping info, before removing the old one */
3759 rc = lnet_ping_target_setup(&pbuf, &ping_mdh,
3760 LNET_PING_INFO_HDR_SIZE +
3761 lnet_get_ni_bytes() - net_bytes,
3764 goto unlock_api_mutex;
3766 lnet_shutdown_lndnet(net);
3768 lnet_acceptor_stop();
3770 lnet_ping_target_update(pbuf, ping_mdh);
3772 goto unlock_api_mutex;
3775 ni = lnet_nid_to_ni_locked(nid, 0);
3777 CERROR("nid %s not found\n", libcfs_nidstr(nid));
3782 net_bytes = lnet_get_net_ni_bytes_locked(net);
3783 net_empty = list_is_singular(&net->net_ni_list);
3787 /* create and link a new ping info, before removing the old one */
3788 rc = lnet_ping_target_setup(&pbuf, &ping_mdh,
3789 (LNET_PING_INFO_HDR_SIZE +
3790 lnet_get_ni_bytes() -
3791 lnet_ping_sts_size(&ni->ni_nid)),
3794 goto unlock_api_mutex;
3796 lnet_shutdown_lndni(ni);
3798 lnet_acceptor_stop();
3800 lnet_ping_target_update(pbuf, ping_mdh);
3802 /* check if the net is empty and remove it if it is */
3804 lnet_shutdown_lndnet(net);
3806 goto unlock_api_mutex;
3811 mutex_unlock(&the_lnet.ln_api_mutex);
3817 * lnet_dyn_add_net and lnet_dyn_del_net are now deprecated.
3818 * They are only expected to be called for unique networks.
3819 * That can be as a result of older DLC library
3820 * calls. Multi-Rail DLC and beyond no longer uses these APIs.
3823 lnet_dyn_add_net(struct lnet_ioctl_config_data *conf)
3825 struct lnet_net *net;
3826 LIST_HEAD(net_head);
3828 struct lnet_ioctl_config_lnd_tunables tun;
3829 const char *nets = conf->cfg_config_u.cfg_net.net_intf;
3831 /* Create a net/ni structures for the network string */
3832 rc = lnet_parse_networks(&net_head, nets);
3834 return rc == 0 ? -EINVAL : rc;
3836 mutex_lock(&the_lnet.ln_api_mutex);
3837 if (the_lnet.ln_state != LNET_STATE_RUNNING) {
3839 goto out_unlock_clean;
3843 rc = -EINVAL; /* only add one network per call */
3844 goto out_unlock_clean;
3847 net = list_first_entry(&net_head, struct lnet_net, net_list);
3848 list_del_init(&net->net_list);
3850 LASSERT(lnet_net_unique(net->net_id, &the_lnet.ln_nets, NULL));
3852 memset(&tun, 0, sizeof(tun));
3854 tun.lt_cmn.lct_peer_timeout =
3855 (!conf->cfg_config_u.cfg_net.net_peer_timeout) ? DEFAULT_PEER_TIMEOUT :
3856 conf->cfg_config_u.cfg_net.net_peer_timeout;
3857 tun.lt_cmn.lct_peer_tx_credits =
3858 (!conf->cfg_config_u.cfg_net.net_peer_tx_credits) ? DEFAULT_PEER_CREDITS :
3859 conf->cfg_config_u.cfg_net.net_peer_tx_credits;
3860 tun.lt_cmn.lct_peer_rtr_credits =
3861 conf->cfg_config_u.cfg_net.net_peer_rtr_credits;
3862 tun.lt_cmn.lct_max_tx_credits =
3863 (!conf->cfg_config_u.cfg_net.net_max_tx_credits) ? DEFAULT_CREDITS :
3864 conf->cfg_config_u.cfg_net.net_max_tx_credits;
3866 rc = lnet_add_net_common(net, &tun);
3869 mutex_unlock(&the_lnet.ln_api_mutex);
3870 /* net_head list is empty in success case */
3871 while ((net = list_first_entry_or_null(&net_head,
3873 net_list)) != NULL) {
3874 list_del_init(&net->net_list);
3881 lnet_dyn_del_net(u32 net_id)
3883 struct lnet_net *net;
3884 struct lnet_ping_buffer *pbuf;
3885 struct lnet_handle_md ping_mdh;
3886 int net_ni_bytes, rc;
3888 /* don't allow userspace to shutdown the LOLND */
3889 if (LNET_NETTYP(net_id) == LOLND)
3892 mutex_lock(&the_lnet.ln_api_mutex);
3893 if (the_lnet.ln_state != LNET_STATE_RUNNING) {
3900 net = lnet_get_net_locked(net_id);
3907 net_ni_bytes = lnet_get_net_ni_bytes_locked(net);
3911 /* create and link a new ping info, before removing the old one */
3912 rc = lnet_ping_target_setup(&pbuf, &ping_mdh,
3913 LNET_PING_INFO_HDR_SIZE +
3914 lnet_get_ni_bytes() - net_ni_bytes,
3919 lnet_shutdown_lndnet(net);
3921 lnet_acceptor_stop();
3923 lnet_ping_target_update(pbuf, ping_mdh);
3926 mutex_unlock(&the_lnet.ln_api_mutex);
3931 void lnet_mark_ping_buffer_for_update(void)
3933 if (the_lnet.ln_routing)
3936 atomic_set(&the_lnet.ln_update_ping_buf, 1);
3937 complete(&the_lnet.ln_mt_wait_complete);
3939 EXPORT_SYMBOL(lnet_mark_ping_buffer_for_update);
3941 void lnet_update_ping_buffer(struct work_struct *work)
3943 struct lnet_ping_buffer *pbuf;
3944 struct lnet_handle_md ping_mdh;
3946 mutex_lock(&the_lnet.ln_api_mutex);
3948 atomic_set(&the_lnet.ln_pb_update_ready, 1);
3950 if ((the_lnet.ln_state == LNET_STATE_RUNNING) &&
3951 !lnet_ping_target_setup(&pbuf, &ping_mdh,
3952 LNET_PING_INFO_HDR_SIZE +
3953 lnet_get_ni_bytes(),
3955 lnet_ping_target_update(pbuf, ping_mdh);
3958 mutex_unlock(&the_lnet.ln_api_mutex);
3962 void lnet_queue_ping_buffer_update(void)
3964 /* don't queue pb update if it is not needed */
3965 if (atomic_dec_if_positive(&the_lnet.ln_update_ping_buf) < 0)
3968 /* don't queue pb update if already queued and not processed */
3969 if (atomic_dec_if_positive(&the_lnet.ln_pb_update_ready) < 0)
3972 INIT_WORK(&the_lnet.ln_pb_update_work, lnet_update_ping_buffer);
3973 queue_work(the_lnet.ln_pb_update_wq, &the_lnet.ln_pb_update_work);
3976 void lnet_incr_dlc_seq(void)
3978 atomic_inc(&lnet_dlc_seq_no);
3981 __u32 lnet_get_dlc_seq_locked(void)
3983 return atomic_read(&lnet_dlc_seq_no);
3987 lnet_ni_set_healthv(lnet_nid_t nid, int value, bool all)
3989 struct lnet_net *net;
3992 lnet_net_lock(LNET_LOCK_EX);
3993 list_for_each_entry(net, &the_lnet.ln_nets, net_list) {
3994 list_for_each_entry(ni, &net->net_ni_list, ni_netlist) {
3995 if (all || (nid_is_nid4(&ni->ni_nid) &&
3996 lnet_nid_to_nid4(&ni->ni_nid) == nid)) {
3997 atomic_set(&ni->ni_healthv, value);
3998 if (list_empty(&ni->ni_recovery) &&
3999 value < LNET_MAX_HEALTH_VALUE) {
4000 CERROR("manually adding local NI %s to recovery\n",
4001 libcfs_nidstr(&ni->ni_nid));
4002 list_add_tail(&ni->ni_recovery,
4003 &the_lnet.ln_mt_localNIRecovq);
4004 lnet_ni_addref_locked(ni, 0);
4007 lnet_net_unlock(LNET_LOCK_EX);
4013 lnet_net_unlock(LNET_LOCK_EX);
4017 lnet_ni_set_conns_per_peer(lnet_nid_t nid, int value, bool all)
4019 struct lnet_net *net;
4022 lnet_net_lock(LNET_LOCK_EX);
4023 list_for_each_entry(net, &the_lnet.ln_nets, net_list) {
4024 list_for_each_entry(ni, &net->net_ni_list, ni_netlist) {
4025 if (lnet_nid_to_nid4(&ni->ni_nid) != nid && !all)
4027 if (LNET_NETTYP(net->net_id) == SOCKLND)
4028 ni->ni_lnd_tunables.lnd_tun_u.lnd_sock.lnd_conns_per_peer = value;
4029 else if (LNET_NETTYP(net->net_id) == O2IBLND)
4030 ni->ni_lnd_tunables.lnd_tun_u.lnd_o2ib.lnd_conns_per_peer = value;
4032 lnet_net_unlock(LNET_LOCK_EX);
4037 lnet_net_unlock(LNET_LOCK_EX);
4041 lnet_get_local_ni_hstats(struct lnet_ioctl_local_ni_hstats *stats)
4045 struct lnet_nid nid;
4047 lnet_nid4_to_nid(stats->hlni_nid, &nid);
4048 cpt = lnet_net_lock_current();
4049 ni = lnet_nid_to_ni_locked(&nid, cpt);
4055 stats->hlni_local_interrupt = atomic_read(&ni->ni_hstats.hlt_local_interrupt);
4056 stats->hlni_local_dropped = atomic_read(&ni->ni_hstats.hlt_local_dropped);
4057 stats->hlni_local_aborted = atomic_read(&ni->ni_hstats.hlt_local_aborted);
4058 stats->hlni_local_no_route = atomic_read(&ni->ni_hstats.hlt_local_no_route);
4059 stats->hlni_local_timeout = atomic_read(&ni->ni_hstats.hlt_local_timeout);
4060 stats->hlni_local_error = atomic_read(&ni->ni_hstats.hlt_local_error);
4061 stats->hlni_fatal_error = atomic_read(&ni->ni_fatal_error_on);
4062 stats->hlni_health_value = atomic_read(&ni->ni_healthv);
4063 stats->hlni_ping_count = ni->ni_ping_count;
4064 stats->hlni_next_ping = ni->ni_next_ping;
4067 lnet_net_unlock(cpt);
4073 lnet_get_local_ni_recovery_list(struct lnet_ioctl_recovery_list *list)
4078 lnet_net_lock(LNET_LOCK_EX);
4079 list_for_each_entry(ni, &the_lnet.ln_mt_localNIRecovq, ni_recovery) {
4080 if (!nid_is_nid4(&ni->ni_nid))
4082 list->rlst_nid_array[i] = lnet_nid_to_nid4(&ni->ni_nid);
4084 if (i >= LNET_MAX_SHOW_NUM_NID)
4087 lnet_net_unlock(LNET_LOCK_EX);
4088 list->rlst_num_nids = i;
4094 lnet_get_peer_ni_recovery_list(struct lnet_ioctl_recovery_list *list)
4096 struct lnet_peer_ni *lpni;
4099 lnet_net_lock(LNET_LOCK_EX);
4100 list_for_each_entry(lpni, &the_lnet.ln_mt_peerNIRecovq, lpni_recovery) {
4101 list->rlst_nid_array[i] = lnet_nid_to_nid4(&lpni->lpni_nid);
4103 if (i >= LNET_MAX_SHOW_NUM_NID)
4106 lnet_net_unlock(LNET_LOCK_EX);
4107 list->rlst_num_nids = i;
4113 * LNet ioctl handler.
4117 LNetCtl(unsigned int cmd, void *arg)
4119 struct libcfs_ioctl_data *data = arg;
4120 struct lnet_ioctl_config_data *config;
4122 struct lnet_nid nid;
4125 BUILD_BUG_ON(sizeof(struct lnet_ioctl_net_config) +
4126 sizeof(struct lnet_ioctl_config_data) > LIBCFS_IOC_DATA_MAX);
4129 case IOC_LIBCFS_GET_NI: {
4130 struct lnet_processid id = {};
4132 rc = LNetGetId(data->ioc_count, &id, false);
4133 data->ioc_nid = lnet_nid_to_nid4(&id.nid);
4136 case IOC_LIBCFS_FAIL_NID:
4137 return lnet_fail_nid(data->ioc_nid, data->ioc_count);
4139 case IOC_LIBCFS_ADD_ROUTE: {
4140 /* default router sensitivity to 1 */
4141 unsigned int sensitivity = 1;
4144 if (config->cfg_hdr.ioc_len < sizeof(*config))
4147 if (config->cfg_config_u.cfg_route.rtr_sensitivity) {
4149 config->cfg_config_u.cfg_route.rtr_sensitivity;
4152 lnet_nid4_to_nid(config->cfg_nid, &nid);
4153 mutex_lock(&the_lnet.ln_api_mutex);
4154 rc = lnet_add_route(config->cfg_net,
4155 config->cfg_config_u.cfg_route.rtr_hop,
4157 config->cfg_config_u.cfg_route.
4158 rtr_priority, sensitivity);
4159 mutex_unlock(&the_lnet.ln_api_mutex);
4163 case IOC_LIBCFS_DEL_ROUTE:
4166 if (config->cfg_hdr.ioc_len < sizeof(*config))
4169 lnet_nid4_to_nid(config->cfg_nid, &nid);
4170 mutex_lock(&the_lnet.ln_api_mutex);
4171 rc = lnet_del_route(config->cfg_net, &nid);
4172 mutex_unlock(&the_lnet.ln_api_mutex);
4175 case IOC_LIBCFS_GET_ROUTE:
4178 if (config->cfg_hdr.ioc_len < sizeof(*config))
4181 mutex_lock(&the_lnet.ln_api_mutex);
4182 rc = lnet_get_route(config->cfg_count,
4184 &config->cfg_config_u.cfg_route.rtr_hop,
4186 &config->cfg_config_u.cfg_route.rtr_flags,
4187 &config->cfg_config_u.cfg_route.
4189 &config->cfg_config_u.cfg_route.
4191 mutex_unlock(&the_lnet.ln_api_mutex);
4194 case IOC_LIBCFS_GET_LOCAL_NI: {
4195 struct lnet_ioctl_config_ni *cfg_ni;
4196 struct lnet_ioctl_config_lnd_tunables *tun = NULL;
4197 struct lnet_ioctl_element_stats *stats;
4202 /* get the tunables if they are available */
4203 if (cfg_ni->lic_cfg_hdr.ioc_len <
4204 sizeof(*cfg_ni) + sizeof(*stats) + sizeof(*tun))
4207 stats = (struct lnet_ioctl_element_stats *)
4209 tun = (struct lnet_ioctl_config_lnd_tunables *)
4210 (cfg_ni->lic_bulk + sizeof(*stats));
4212 tun_size = cfg_ni->lic_cfg_hdr.ioc_len - sizeof(*cfg_ni) -
4215 mutex_lock(&the_lnet.ln_api_mutex);
4216 rc = lnet_get_ni_config(cfg_ni, tun, stats, tun_size);
4217 mutex_unlock(&the_lnet.ln_api_mutex);
4221 case IOC_LIBCFS_GET_LOCAL_NI_MSG_STATS: {
4222 struct lnet_ioctl_element_msg_stats *msg_stats = arg;
4225 if (msg_stats->im_hdr.ioc_len != sizeof(*msg_stats))
4228 mutex_lock(&the_lnet.ln_api_mutex);
4230 cpt = lnet_net_lock_current();
4231 rc = lnet_get_ni_stats(msg_stats);
4232 lnet_net_unlock(cpt);
4234 mutex_unlock(&the_lnet.ln_api_mutex);
4239 case IOC_LIBCFS_GET_NET: {
4240 size_t total = sizeof(*config) +
4241 sizeof(struct lnet_ioctl_net_config);
4244 if (config->cfg_hdr.ioc_len < total)
4247 mutex_lock(&the_lnet.ln_api_mutex);
4248 rc = lnet_get_net_config(config);
4249 mutex_unlock(&the_lnet.ln_api_mutex);
4253 case IOC_LIBCFS_GET_LNET_STATS:
4255 struct lnet_ioctl_lnet_stats *lnet_stats = arg;
4257 if (lnet_stats->st_hdr.ioc_len < sizeof(*lnet_stats))
4260 mutex_lock(&the_lnet.ln_api_mutex);
4261 rc = lnet_counters_get(&lnet_stats->st_cntrs);
4262 mutex_unlock(&the_lnet.ln_api_mutex);
4266 case IOC_LIBCFS_RESET_LNET_STATS:
4268 mutex_lock(&the_lnet.ln_api_mutex);
4269 lnet_counters_reset();
4270 mutex_unlock(&the_lnet.ln_api_mutex);
4274 case IOC_LIBCFS_CONFIG_RTR:
4277 if (config->cfg_hdr.ioc_len < sizeof(*config))
4280 mutex_lock(&the_lnet.ln_api_mutex);
4281 if (config->cfg_config_u.cfg_buffers.buf_enable) {
4282 rc = lnet_rtrpools_enable();
4283 mutex_unlock(&the_lnet.ln_api_mutex);
4286 lnet_rtrpools_disable();
4287 mutex_unlock(&the_lnet.ln_api_mutex);
4290 case IOC_LIBCFS_ADD_BUF:
4293 if (config->cfg_hdr.ioc_len < sizeof(*config))
4296 mutex_lock(&the_lnet.ln_api_mutex);
4297 rc = lnet_rtrpools_adjust(config->cfg_config_u.cfg_buffers.
4299 config->cfg_config_u.cfg_buffers.
4301 config->cfg_config_u.cfg_buffers.
4303 mutex_unlock(&the_lnet.ln_api_mutex);
4306 case IOC_LIBCFS_SET_NUMA_RANGE: {
4307 struct lnet_ioctl_set_value *numa;
4309 if (numa->sv_hdr.ioc_len != sizeof(*numa))
4311 lnet_net_lock(LNET_LOCK_EX);
4312 lnet_numa_range = numa->sv_value;
4313 lnet_net_unlock(LNET_LOCK_EX);
4317 case IOC_LIBCFS_GET_NUMA_RANGE: {
4318 struct lnet_ioctl_set_value *numa;
4320 if (numa->sv_hdr.ioc_len != sizeof(*numa))
4322 numa->sv_value = lnet_numa_range;
4326 case IOC_LIBCFS_GET_BUF: {
4327 struct lnet_ioctl_pool_cfg *pool_cfg;
4328 size_t total = sizeof(*config) + sizeof(*pool_cfg);
4332 if (config->cfg_hdr.ioc_len < total)
4335 pool_cfg = (struct lnet_ioctl_pool_cfg *)config->cfg_bulk;
4337 mutex_lock(&the_lnet.ln_api_mutex);
4338 rc = lnet_get_rtr_pool_cfg(config->cfg_count, pool_cfg);
4339 mutex_unlock(&the_lnet.ln_api_mutex);
4343 case IOC_LIBCFS_GET_LOCAL_HSTATS: {
4344 struct lnet_ioctl_local_ni_hstats *stats = arg;
4346 if (stats->hlni_hdr.ioc_len < sizeof(*stats))
4349 mutex_lock(&the_lnet.ln_api_mutex);
4350 rc = lnet_get_local_ni_hstats(stats);
4351 mutex_unlock(&the_lnet.ln_api_mutex);
4356 case IOC_LIBCFS_GET_RECOVERY_QUEUE: {
4357 struct lnet_ioctl_recovery_list *list = arg;
4358 if (list->rlst_hdr.ioc_len < sizeof(*list))
4361 mutex_lock(&the_lnet.ln_api_mutex);
4362 if (list->rlst_type == LNET_HEALTH_TYPE_LOCAL_NI)
4363 rc = lnet_get_local_ni_recovery_list(list);
4365 rc = lnet_get_peer_ni_recovery_list(list);
4366 mutex_unlock(&the_lnet.ln_api_mutex);
4370 case IOC_LIBCFS_ADD_PEER_NI: {
4371 struct lnet_ioctl_peer_cfg *cfg = arg;
4372 struct lnet_nid prim_nid;
4374 if (cfg->prcfg_hdr.ioc_len < sizeof(*cfg))
4377 mutex_lock(&the_lnet.ln_api_mutex);
4378 lnet_nid4_to_nid(cfg->prcfg_prim_nid, &prim_nid);
4379 lnet_nid4_to_nid(cfg->prcfg_cfg_nid, &nid);
4380 rc = lnet_user_add_peer_ni(&prim_nid, &nid, cfg->prcfg_mr,
4381 cfg->prcfg_count == 1);
4382 mutex_unlock(&the_lnet.ln_api_mutex);
4386 case IOC_LIBCFS_DEL_PEER_NI: {
4387 struct lnet_ioctl_peer_cfg *cfg = arg;
4388 struct lnet_nid prim_nid;
4390 if (cfg->prcfg_hdr.ioc_len < sizeof(*cfg))
4393 mutex_lock(&the_lnet.ln_api_mutex);
4394 lnet_nid4_to_nid(cfg->prcfg_prim_nid, &prim_nid);
4395 lnet_nid4_to_nid(cfg->prcfg_cfg_nid, &nid);
4396 rc = lnet_del_peer_ni(&prim_nid,
4399 mutex_unlock(&the_lnet.ln_api_mutex);
4403 case IOC_LIBCFS_GET_PEER_INFO: {
4404 struct lnet_ioctl_peer *peer_info = arg;
4406 if (peer_info->pr_hdr.ioc_len < sizeof(*peer_info))
4409 mutex_lock(&the_lnet.ln_api_mutex);
4410 rc = lnet_get_peer_ni_info(
4411 peer_info->pr_count,
4413 peer_info->pr_lnd_u.pr_peer_credits.cr_aliveness,
4414 &peer_info->pr_lnd_u.pr_peer_credits.cr_ncpt,
4415 &peer_info->pr_lnd_u.pr_peer_credits.cr_refcount,
4416 &peer_info->pr_lnd_u.pr_peer_credits.cr_ni_peer_tx_credits,
4417 &peer_info->pr_lnd_u.pr_peer_credits.cr_peer_tx_credits,
4418 &peer_info->pr_lnd_u.pr_peer_credits.cr_peer_rtr_credits,
4419 &peer_info->pr_lnd_u.pr_peer_credits.cr_peer_min_tx_credits,
4420 &peer_info->pr_lnd_u.pr_peer_credits.cr_peer_tx_qnob);
4421 mutex_unlock(&the_lnet.ln_api_mutex);
4425 case IOC_LIBCFS_GET_PEER_NI: {
4426 struct lnet_ioctl_peer_cfg *cfg = arg;
4428 if (cfg->prcfg_hdr.ioc_len < sizeof(*cfg))
4431 mutex_lock(&the_lnet.ln_api_mutex);
4432 rc = lnet_get_peer_info(cfg,
4433 (void __user *)cfg->prcfg_bulk);
4434 mutex_unlock(&the_lnet.ln_api_mutex);
4438 case IOC_LIBCFS_GET_PEER_LIST: {
4439 struct lnet_ioctl_peer_cfg *cfg = arg;
4441 if (cfg->prcfg_hdr.ioc_len < sizeof(*cfg))
4444 mutex_lock(&the_lnet.ln_api_mutex);
4445 rc = lnet_get_peer_list(&cfg->prcfg_count, &cfg->prcfg_size,
4446 (struct lnet_process_id __user *)cfg->prcfg_bulk);
4447 mutex_unlock(&the_lnet.ln_api_mutex);
4451 case IOC_LIBCFS_SET_HEALHV: {
4452 struct lnet_ioctl_reset_health_cfg *cfg = arg;
4455 if (cfg->rh_hdr.ioc_len < sizeof(*cfg))
4457 if (cfg->rh_value < 0 ||
4458 cfg->rh_value > LNET_MAX_HEALTH_VALUE)
4459 value = LNET_MAX_HEALTH_VALUE;
4461 value = cfg->rh_value;
4462 CDEBUG(D_NET, "Manually setting healthv to %d for %s:%s. all = %d\n",
4463 value, (cfg->rh_type == LNET_HEALTH_TYPE_LOCAL_NI) ?
4464 "local" : "peer", libcfs_nid2str(cfg->rh_nid), cfg->rh_all);
4465 lnet_nid4_to_nid(cfg->rh_nid, &nid);
4466 mutex_lock(&the_lnet.ln_api_mutex);
4467 if (cfg->rh_type == LNET_HEALTH_TYPE_LOCAL_NI)
4468 lnet_ni_set_healthv(cfg->rh_nid, value,
4471 lnet_peer_ni_set_healthv(&nid, value, cfg->rh_all);
4472 mutex_unlock(&the_lnet.ln_api_mutex);
4476 case IOC_LIBCFS_SET_PEER: {
4477 struct lnet_ioctl_peer_cfg *cfg = arg;
4478 struct lnet_peer *lp;
4480 if (cfg->prcfg_hdr.ioc_len < sizeof(*cfg))
4483 mutex_lock(&the_lnet.ln_api_mutex);
4484 lnet_nid4_to_nid(cfg->prcfg_prim_nid, &nid);
4485 lp = lnet_find_peer(&nid);
4487 mutex_unlock(&the_lnet.ln_api_mutex);
4490 spin_lock(&lp->lp_lock);
4491 lp->lp_state = cfg->prcfg_state;
4492 spin_unlock(&lp->lp_lock);
4493 lnet_peer_decref_locked(lp);
4494 mutex_unlock(&the_lnet.ln_api_mutex);
4495 CDEBUG(D_NET, "Set peer %s state to %u\n",
4496 libcfs_nid2str(cfg->prcfg_prim_nid), cfg->prcfg_state);
4500 case IOC_LIBCFS_SET_CONNS_PER_PEER: {
4501 struct lnet_ioctl_reset_conns_per_peer_cfg *cfg = arg;
4504 if (cfg->rcpp_hdr.ioc_len < sizeof(*cfg))
4506 if (cfg->rcpp_value < 0)
4509 value = cfg->rcpp_value;
4511 "Setting conns_per_peer to %d for %s. all = %d\n",
4512 value, libcfs_nid2str(cfg->rcpp_nid), cfg->rcpp_all);
4513 mutex_lock(&the_lnet.ln_api_mutex);
4514 lnet_ni_set_conns_per_peer(cfg->rcpp_nid, value, cfg->rcpp_all);
4515 mutex_unlock(&the_lnet.ln_api_mutex);
4519 case IOC_LIBCFS_NOTIFY_ROUTER: {
4520 /* Convert the user-supplied real time to monotonic.
4521 * NB: "when" is always in the past
4523 time64_t when = ktime_get_seconds() -
4524 (ktime_get_real_seconds() - data->ioc_u64[0]);
4526 lnet_nid4_to_nid(data->ioc_nid, &nid);
4527 return lnet_notify(NULL, &nid, data->ioc_flags, false, when);
4530 case IOC_LIBCFS_LNET_DIST:
4531 lnet_nid4_to_nid(data->ioc_nid, &nid);
4532 rc = LNetDist(&nid, &nid, &data->ioc_u32[1]);
4533 if (rc < 0 && rc != -EHOSTUNREACH)
4536 data->ioc_nid = lnet_nid_to_nid4(&nid);
4537 data->ioc_u32[0] = rc;
4540 case IOC_LIBCFS_TESTPROTOCOMPAT:
4541 the_lnet.ln_testprotocompat = data->ioc_flags;
4544 case IOC_LIBCFS_LNET_FAULT:
4545 return lnet_fault_ctl(data->ioc_flags, data);
4547 case IOC_LIBCFS_PING_PEER: {
4548 struct lnet_ioctl_ping_data *ping = arg;
4549 struct lnet_process_id __user *ids = ping->ping_buf;
4550 struct lnet_nid src_nid = LNET_ANY_NID;
4551 struct lnet_genl_ping_list plist;
4552 struct lnet_processid id;
4553 struct lnet_peer *lp;
4554 signed long timeout;
4557 /* Check if the supplied ping data supports source nid
4558 * NB: This check is sufficient if lnet_ioctl_ping_data has
4559 * additional fields added, but if they are re-ordered or
4560 * fields removed then this will break. It is expected that
4561 * these ioctls will be replaced with netlink implementation, so
4562 * it is probably not worth coming up with a more robust version
4563 * compatibility scheme.
4565 if (ping->ping_hdr.ioc_len >= sizeof(struct lnet_ioctl_ping_data))
4566 lnet_nid4_to_nid(ping->ping_src, &src_nid);
4568 /* If timeout is negative then set default of 3 minutes */
4569 if (((s32)ping->op_param) <= 0 ||
4570 ping->op_param > (DEFAULT_PEER_TIMEOUT * MSEC_PER_SEC))
4571 timeout = cfs_time_seconds(DEFAULT_PEER_TIMEOUT);
4573 timeout = nsecs_to_jiffies(ping->op_param * NSEC_PER_MSEC);
4575 id.pid = ping->ping_id.pid;
4576 lnet_nid4_to_nid(ping->ping_id.nid, &id.nid);
4577 rc = lnet_ping(&id, &src_nid, timeout, &plist,
4580 goto report_ping_err;
4584 for (i = 0; i < count; i++) {
4585 struct lnet_processid *result;
4586 struct lnet_process_id tmpid;
4588 result = genradix_ptr(&plist.lgpl_list, i);
4589 memset(&tmpid, 0, sizeof(tmpid));
4590 tmpid.pid = result->pid;
4591 tmpid.nid = lnet_nid_to_nid4(&result->nid);
4592 if (copy_to_user(&ids[i], &tmpid, sizeof(tmpid))) {
4594 goto report_ping_err;
4598 mutex_lock(&the_lnet.ln_api_mutex);
4599 lp = lnet_find_peer(&id.nid);
4602 lnet_nid_to_nid4(&lp->lp_primary_nid);
4603 ping->mr_info = lnet_peer_is_multi_rail(lp);
4604 lnet_peer_decref_locked(lp);
4606 mutex_unlock(&the_lnet.ln_api_mutex);
4608 ping->ping_count = count;
4610 genradix_free(&plist.lgpl_list);
4614 case IOC_LIBCFS_DISCOVER: {
4615 struct lnet_ioctl_ping_data *discover = arg;
4616 struct lnet_process_id __user *ids;
4617 struct lnet_genl_ping_list dlists;
4618 struct lnet_processid id;
4619 struct lnet_peer *lp;
4622 if (discover->ping_count <= 0)
4625 genradix_init(&dlists.lgpl_list);
4626 /* If the user buffer has more space than the lnet_interfaces_max,
4627 * then only fill it up to lnet_interfaces_max.
4629 if (discover->ping_count > lnet_interfaces_max)
4630 discover->ping_count = lnet_interfaces_max;
4632 id.pid = discover->ping_id.pid;
4633 lnet_nid4_to_nid(discover->ping_id.nid, &id.nid);
4634 rc = lnet_discover(&id, discover->op_param, &dlists);
4636 goto report_discover_err;
4639 ids = discover->ping_buf;
4640 for (i = 0; i < count; i++) {
4641 struct lnet_processid *result;
4642 struct lnet_process_id tmpid;
4644 result = genradix_ptr(&dlists.lgpl_list, i);
4645 memset(&tmpid, 0, sizeof(tmpid));
4646 tmpid.pid = result->pid;
4647 tmpid.nid = lnet_nid_to_nid4(&result->nid);
4648 if (copy_to_user(&ids[i], &tmpid, sizeof(tmpid))) {
4650 goto report_discover_err;
4653 if (i >= discover->ping_count)
4658 mutex_lock(&the_lnet.ln_api_mutex);
4659 lp = lnet_find_peer(&id.nid);
4661 discover->ping_id.nid =
4662 lnet_nid_to_nid4(&lp->lp_primary_nid);
4663 discover->mr_info = lnet_peer_is_multi_rail(lp);
4664 lnet_peer_decref_locked(lp);
4666 mutex_unlock(&the_lnet.ln_api_mutex);
4668 discover->ping_count = count;
4669 report_discover_err:
4670 genradix_free(&dlists.lgpl_list);
4674 case IOC_LIBCFS_ADD_UDSP: {
4675 struct lnet_ioctl_udsp *ioc_udsp = arg;
4676 __u32 bulk_size = ioc_udsp->iou_hdr.ioc_len;
4678 mutex_lock(&the_lnet.ln_api_mutex);
4679 rc = lnet_udsp_demarshal_add(arg, bulk_size);
4681 rc = lnet_udsp_apply_policies(NULL, false);
4682 CDEBUG(D_NET, "policy application returned %d\n", rc);
4685 mutex_unlock(&the_lnet.ln_api_mutex);
4690 case IOC_LIBCFS_DEL_UDSP: {
4691 struct lnet_ioctl_udsp *ioc_udsp = arg;
4692 int idx = ioc_udsp->iou_idx;
4694 if (ioc_udsp->iou_hdr.ioc_len < sizeof(*ioc_udsp))
4697 mutex_lock(&the_lnet.ln_api_mutex);
4698 rc = lnet_udsp_del_policy(idx);
4699 mutex_unlock(&the_lnet.ln_api_mutex);
4704 case IOC_LIBCFS_GET_UDSP_SIZE: {
4705 struct lnet_ioctl_udsp *ioc_udsp = arg;
4706 struct lnet_udsp *udsp;
4708 if (ioc_udsp->iou_hdr.ioc_len < sizeof(*ioc_udsp))
4713 mutex_lock(&the_lnet.ln_api_mutex);
4714 udsp = lnet_udsp_get_policy(ioc_udsp->iou_idx);
4718 /* coming in iou_idx will hold the idx of the udsp
4719 * to get the size of. going out the iou_idx will
4720 * hold the size of the UDSP found at the passed
4723 ioc_udsp->iou_idx = lnet_get_udsp_size(udsp);
4724 if (ioc_udsp->iou_idx < 0)
4727 mutex_unlock(&the_lnet.ln_api_mutex);
4732 case IOC_LIBCFS_GET_UDSP: {
4733 struct lnet_ioctl_udsp *ioc_udsp = arg;
4734 struct lnet_udsp *udsp;
4736 if (ioc_udsp->iou_hdr.ioc_len < sizeof(*ioc_udsp))
4741 mutex_lock(&the_lnet.ln_api_mutex);
4742 udsp = lnet_udsp_get_policy(ioc_udsp->iou_idx);
4746 rc = lnet_udsp_marshal(udsp, ioc_udsp);
4747 mutex_unlock(&the_lnet.ln_api_mutex);
4752 case IOC_LIBCFS_GET_CONST_UDSP_INFO: {
4753 struct lnet_ioctl_construct_udsp_info *info = arg;
4755 if (info->cud_hdr.ioc_len < sizeof(*info))
4758 CDEBUG(D_NET, "GET_UDSP_INFO for %s\n",
4759 libcfs_nid2str(info->cud_nid));
4761 lnet_nid4_to_nid(info->cud_nid, &nid);
4762 mutex_lock(&the_lnet.ln_api_mutex);
4764 lnet_udsp_get_construct_info(info, &nid);
4766 mutex_unlock(&the_lnet.ln_api_mutex);
4772 ni = lnet_net2ni_addref(data->ioc_net);
4776 if (ni->ni_net->net_lnd->lnd_ctl == NULL)
4779 rc = ni->ni_net->net_lnd->lnd_ctl(ni, cmd, arg);
4782 return rc <= 0 ? rc : 0;
4786 EXPORT_SYMBOL(LNetCtl);
4788 struct lnet_nid_cpt {
4789 struct lnet_nid lnc_nid;
4790 unsigned int lnc_cpt;
4793 struct lnet_genl_nid_cpt_list {
4794 unsigned int lgncl_index;
4795 unsigned int lgncl_list_count;
4796 GENRADIX(struct lnet_nid_cpt) lgncl_lnc_list;
4799 static inline struct lnet_genl_nid_cpt_list *
4800 lnet_cpt_of_nid_dump_ctx(struct netlink_callback *cb)
4802 return (struct lnet_genl_nid_cpt_list *)cb->args[0];
4805 static int lnet_cpt_of_nid_show_done(struct netlink_callback *cb)
4807 struct lnet_genl_nid_cpt_list *lgncl;
4809 lgncl = lnet_cpt_of_nid_dump_ctx(cb);
4812 genradix_free(&lgncl->lgncl_lnc_list);
4813 LIBCFS_FREE(lgncl, sizeof(*lgncl));
4820 static int lnet_cpt_of_nid_show_start(struct netlink_callback *cb)
4822 struct genlmsghdr *gnlh = nlmsg_data(cb->nlh);
4823 #ifdef HAVE_NL_PARSE_WITH_EXT_ACK
4824 struct netlink_ext_ack *extack = NULL;
4826 struct lnet_genl_nid_cpt_list *lgncl;
4827 int msg_len = genlmsg_len(gnlh);
4828 struct nlattr *params, *top;
4831 #ifdef HAVE_NL_DUMP_WITH_EXT_ACK
4832 extack = cb->extack;
4835 mutex_lock(&the_lnet.ln_api_mutex);
4836 if (the_lnet.ln_state != LNET_STATE_RUNNING) {
4837 NL_SET_ERR_MSG(extack, "Network is down");
4838 mutex_unlock(&the_lnet.ln_api_mutex);
4842 msg_len = genlmsg_len(gnlh);
4844 NL_SET_ERR_MSG(extack, "Missing NID argument(s)");
4845 mutex_unlock(&the_lnet.ln_api_mutex);
4849 LIBCFS_ALLOC(lgncl, sizeof(*lgncl));
4851 mutex_unlock(&the_lnet.ln_api_mutex);
4855 genradix_init(&lgncl->lgncl_lnc_list);
4856 lgncl->lgncl_list_count = 0;
4857 cb->args[0] = (long)lgncl;
4859 params = genlmsg_data(gnlh);
4860 nla_for_each_attr(top, params, msg_len, rem) {
4861 struct nlattr *nids;
4864 switch (nla_type(top)) {
4865 case LN_SCALAR_ATTR_LIST:
4866 nla_for_each_nested(nids, top, rem2) {
4867 char nidstr[LNET_NIDSTR_SIZE + 1];
4868 struct lnet_nid_cpt *lnc;
4870 if (nla_type(nids) != LN_SCALAR_ATTR_VALUE)
4873 memset(nidstr, 0, sizeof(nidstr));
4874 rc = nla_strscpy(nidstr, nids, sizeof(nidstr));
4876 NL_SET_ERR_MSG(extack,
4877 "failed to get NID");
4878 GOTO(report_err, rc);
4881 lnc = genradix_ptr_alloc(&lgncl->lgncl_lnc_list,
4882 lgncl->lgncl_list_count++,
4885 NL_SET_ERR_MSG(extack,
4886 "failed to allocate NID");
4887 GOTO(report_err, rc = -ENOMEM);
4890 rc = libcfs_strnid(&lnc->lnc_nid, strim(nidstr));
4892 NL_SET_ERR_MSG(extack, "invalid NID");
4893 GOTO(report_err, rc);
4896 CDEBUG(D_NET, "nid: %s\n", libcfs_nidstr(&lnc->lnc_nid));
4904 mutex_unlock(&the_lnet.ln_api_mutex);
4907 lnet_cpt_of_nid_show_done(cb);
4912 static const struct ln_key_list cpt_of_nid_props_list = {
4913 .lkl_maxattr = LNET_CPT_OF_NID_ATTR_MAX,
4915 [LNET_CPT_OF_NID_ATTR_HDR] = {
4916 .lkp_value = "cpt-of-nid",
4917 .lkp_key_format = LNKF_SEQUENCE | LNKF_MAPPING,
4918 .lkp_data_type = NLA_NUL_STRING,
4920 [LNET_CPT_OF_NID_ATTR_NID] = {
4922 .lkp_data_type = NLA_STRING,
4924 [LNET_CPT_OF_NID_ATTR_CPT] = {
4926 .lkp_data_type = NLA_U32,
4931 static int lnet_cpt_of_nid_show_dump(struct sk_buff *msg,
4932 struct netlink_callback *cb)
4934 struct lnet_genl_nid_cpt_list *lgncl;
4935 #ifdef HAVE_NL_PARSE_WITH_EXT_ACK
4936 struct netlink_ext_ack *extack = NULL;
4938 int portid = NETLINK_CB(cb->skb).portid;
4939 int seq = cb->nlh->nlmsg_seq;
4942 bool need_hdr = true;
4944 #ifdef HAVE_NL_DUMP_WITH_EXT_ACK
4945 extack = cb->extack;
4948 mutex_lock(&the_lnet.ln_api_mutex);
4949 if (the_lnet.ln_state != LNET_STATE_RUNNING) {
4950 NL_SET_ERR_MSG(extack, "Network is down");
4951 GOTO(send_error, rc = -ENETDOWN);
4954 lgncl = lnet_cpt_of_nid_dump_ctx(cb);
4955 idx = lgncl->lgncl_index;
4957 if (!lgncl->lgncl_index) {
4958 const struct ln_key_list *all[] = {
4959 &cpt_of_nid_props_list, NULL, NULL
4962 rc = lnet_genl_send_scalar_list(msg, portid, seq, &lnet_family,
4963 NLM_F_CREATE | NLM_F_MULTI,
4964 LNET_CMD_CPT_OF_NID, all);
4966 NL_SET_ERR_MSG(extack, "failed to send key table");
4967 GOTO(send_error, rc);
4971 while (idx < lgncl->lgncl_list_count) {
4972 struct lnet_nid_cpt *lnc;
4976 lnc = genradix_ptr(&lgncl->lgncl_lnc_list, idx++);
4978 cpt = lnet_nid_cpt_hash(&lnc->lnc_nid, LNET_CPT_NUMBER);
4980 CDEBUG(D_NET, "nid: %s cpt: %d\n", libcfs_nidstr(&lnc->lnc_nid), cpt);
4981 hdr = genlmsg_put(msg, portid, seq, &lnet_family,
4982 NLM_F_MULTI, LNET_CMD_CPT_OF_NID);
4984 NL_SET_ERR_MSG(extack, "failed to send values");
4985 genlmsg_cancel(msg, hdr);
4986 GOTO(send_error, rc = -EMSGSIZE);
4990 nla_put_string(msg, LNET_CPT_OF_NID_ATTR_HDR, "");
4994 nla_put_string(msg, LNET_CPT_OF_NID_ATTR_NID,
4995 libcfs_nidstr(&lnc->lnc_nid));
4996 nla_put_u32(msg, LNET_CPT_OF_NID_ATTR_CPT, cpt);
4998 genlmsg_end(msg, hdr);
5001 genradix_free(&lgncl->lgncl_lnc_list);
5003 lgncl->lgncl_index = idx;
5006 mutex_unlock(&the_lnet.ln_api_mutex);
5008 return lnet_nl_send_error(cb->skb, portid, seq, rc);
5011 #ifndef HAVE_NETLINK_CALLBACK_START
5012 static int lnet_old_cpt_of_nid_show_dump(struct sk_buff *msg,
5013 struct netlink_callback *cb)
5016 int rc = lnet_cpt_of_nid_show_start(cb);
5022 return lnet_cpt_of_nid_show_dump(msg, cb);
5026 /* This is the keys for the UDSP info which is used by many
5029 static const struct ln_key_list udsp_info_list = {
5030 .lkl_maxattr = LNET_UDSP_INFO_ATTR_MAX,
5032 [LNET_UDSP_INFO_ATTR_NET_PRIORITY] = {
5033 .lkp_value = "net priority",
5034 .lkp_data_type = NLA_S32
5036 [LNET_UDSP_INFO_ATTR_NID_PRIORITY] = {
5037 .lkp_value = "nid priority",
5038 .lkp_data_type = NLA_S32
5040 [LNET_UDSP_INFO_ATTR_PREF_RTR_NIDS_LIST] = {
5041 .lkp_value = "Preferred gateway NIDs",
5042 .lkp_key_format = LNKF_MAPPING,
5043 .lkp_data_type = NLA_NESTED,
5045 [LNET_UDSP_INFO_ATTR_PREF_NIDS_LIST] = {
5046 .lkp_value = "Preferred source NIDs",
5047 .lkp_key_format = LNKF_MAPPING,
5048 .lkp_data_type = NLA_NESTED,
5053 static const struct ln_key_list udsp_info_pref_nids_list = {
5054 .lkl_maxattr = LNET_UDSP_INFO_PREF_NIDS_ATTR_MAX,
5056 [LNET_UDSP_INFO_PREF_NIDS_ATTR_INDEX] = {
5057 .lkp_value = "NID-0",
5058 .lkp_data_type = NLA_NUL_STRING,
5060 [LNET_UDSP_INFO_PREF_NIDS_ATTR_NID] = {
5061 .lkp_value = "0@lo",
5062 .lkp_data_type = NLA_STRING,
5067 static int lnet_udsp_info_send(struct sk_buff *msg, int attr,
5068 struct lnet_nid *nid, bool remote)
5070 struct lnet_ioctl_construct_udsp_info *udsp;
5071 struct nlattr *udsp_attr, *udsp_info;
5072 struct nlattr *udsp_list_attr;
5073 struct nlattr *udsp_list_info;
5076 CFS_ALLOC_PTR(udsp);
5080 udsp->cud_peer = remote;
5081 lnet_udsp_get_construct_info(udsp, nid);
5083 udsp_info = nla_nest_start(msg, attr);
5084 udsp_attr = nla_nest_start(msg, 0);
5085 nla_put_s32(msg, LNET_UDSP_INFO_ATTR_NET_PRIORITY,
5086 udsp->cud_net_priority);
5087 nla_put_s32(msg, LNET_UDSP_INFO_ATTR_NID_PRIORITY,
5088 udsp->cud_nid_priority);
5090 if (udsp->cud_pref_rtr_nid[0] == 0)
5093 udsp_list_info = nla_nest_start(msg,
5094 LNET_UDSP_INFO_ATTR_PREF_RTR_NIDS_LIST);
5095 for (i = 0; i < LNET_MAX_SHOW_NUM_NID; i++) {
5096 char tmp[8]; /* NID-"3 number"\0 */
5098 if (udsp->cud_pref_rtr_nid[i] == 0)
5101 udsp_list_attr = nla_nest_start(msg, i);
5102 snprintf(tmp, sizeof(tmp), "NID-%d", i);
5103 nla_put_string(msg, LNET_UDSP_INFO_PREF_NIDS_ATTR_INDEX,
5105 nla_put_string(msg, LNET_UDSP_INFO_PREF_NIDS_ATTR_NID,
5106 libcfs_nid2str(udsp->cud_pref_rtr_nid[i]));
5107 nla_nest_end(msg, udsp_list_attr);
5109 nla_nest_end(msg, udsp_list_info);
5111 nla_nest_end(msg, udsp_attr);
5112 nla_nest_end(msg, udsp_info);
5113 LIBCFS_FREE(udsp, sizeof(*udsp));
5118 /* LNet NI handling */
5119 static const struct ln_key_list net_props_list = {
5120 .lkl_maxattr = LNET_NET_ATTR_MAX,
5122 [LNET_NET_ATTR_HDR] = {
5124 .lkp_key_format = LNKF_SEQUENCE | LNKF_MAPPING,
5125 .lkp_data_type = NLA_NUL_STRING,
5127 [LNET_NET_ATTR_TYPE] = {
5128 .lkp_value = "net type",
5129 .lkp_data_type = NLA_STRING
5131 [LNET_NET_ATTR_LOCAL] = {
5132 .lkp_value = "local NI(s)",
5133 .lkp_key_format = LNKF_SEQUENCE | LNKF_MAPPING,
5134 .lkp_data_type = NLA_NESTED
5139 static struct ln_key_list local_ni_list = {
5140 .lkl_maxattr = LNET_NET_LOCAL_NI_ATTR_MAX,
5142 [LNET_NET_LOCAL_NI_ATTR_NID] = {
5144 .lkp_data_type = NLA_STRING
5146 [LNET_NET_LOCAL_NI_ATTR_STATUS] = {
5147 .lkp_value = "status",
5148 .lkp_data_type = NLA_STRING
5150 [LNET_NET_LOCAL_NI_ATTR_INTERFACE] = {
5151 .lkp_value = "interfaces",
5152 .lkp_key_format = LNKF_MAPPING,
5153 .lkp_data_type = NLA_NESTED
5155 [LNET_NET_LOCAL_NI_ATTR_STATS] = {
5156 .lkp_value = "statistics",
5157 .lkp_key_format = LNKF_MAPPING,
5158 .lkp_data_type = NLA_NESTED
5160 [LNET_NET_LOCAL_NI_ATTR_UDSP_INFO] = {
5161 .lkp_value = "udsp info",
5162 .lkp_key_format = LNKF_MAPPING,
5163 .lkp_data_type = NLA_NESTED
5165 [LNET_NET_LOCAL_NI_ATTR_SEND_STATS] = {
5166 .lkp_value = "sent_stats",
5167 .lkp_key_format = LNKF_MAPPING,
5168 .lkp_data_type = NLA_NESTED
5170 [LNET_NET_LOCAL_NI_ATTR_RECV_STATS] = {
5171 .lkp_value = "received_stats",
5172 .lkp_key_format = LNKF_MAPPING,
5173 .lkp_data_type = NLA_NESTED
5175 [LNET_NET_LOCAL_NI_ATTR_DROPPED_STATS] = {
5176 .lkp_value = "dropped_stats",
5177 .lkp_key_format = LNKF_MAPPING,
5178 .lkp_data_type = NLA_NESTED
5181 [LNET_NET_LOCAL_NI_ATTR_HEALTH_STATS] = {
5182 .lkp_value = "health stats",
5183 .lkp_key_format = LNKF_MAPPING,
5184 .lkp_data_type = NLA_NESTED
5186 [LNET_NET_LOCAL_NI_ATTR_TUNABLES] = {
5187 .lkp_value = "tunables",
5188 .lkp_key_format = LNKF_MAPPING,
5189 .lkp_data_type = NLA_NESTED
5191 [LNET_NET_LOCAL_NI_ATTR_LND_TUNABLES] = {
5192 .lkp_value = "lnd tunables",
5193 .lkp_key_format = LNKF_MAPPING,
5194 .lkp_data_type = NLA_NESTED
5196 [LNET_NET_LOCAL_NI_DEV_CPT] = {
5197 .lkp_value = "dev cpt",
5198 .lkp_data_type = NLA_S32,
5200 [LNET_NET_LOCAL_NI_CPTS] = {
5202 .lkp_data_type = NLA_STRING,
5207 static const struct ln_key_list local_ni_interfaces_list = {
5208 .lkl_maxattr = LNET_NET_LOCAL_NI_INTF_ATTR_MAX,
5210 [LNET_NET_LOCAL_NI_INTF_ATTR_TYPE] = {
5212 .lkp_data_type = NLA_STRING
5217 static const struct ln_key_list local_ni_stats_list = {
5218 .lkl_maxattr = LNET_NET_LOCAL_NI_STATS_ATTR_MAX,
5220 [LNET_NET_LOCAL_NI_STATS_ATTR_SEND_COUNT] = {
5221 .lkp_value = "send_count",
5222 .lkp_data_type = NLA_U32
5224 [LNET_NET_LOCAL_NI_STATS_ATTR_RECV_COUNT] = {
5225 .lkp_value = "recv_count",
5226 .lkp_data_type = NLA_U32
5228 [LNET_NET_LOCAL_NI_STATS_ATTR_DROP_COUNT] = {
5229 .lkp_value = "drop_count",
5230 .lkp_data_type = NLA_U32
5235 static const struct ln_key_list local_ni_msg_stats_list = {
5236 .lkl_maxattr = LNET_NET_LOCAL_NI_MSG_STATS_ATTR_MAX,
5238 [LNET_NET_LOCAL_NI_MSG_STATS_ATTR_PUT_COUNT] = {
5240 .lkp_data_type = NLA_U32
5242 [LNET_NET_LOCAL_NI_MSG_STATS_ATTR_GET_COUNT] = {
5244 .lkp_data_type = NLA_U32
5246 [LNET_NET_LOCAL_NI_MSG_STATS_ATTR_REPLY_COUNT] = {
5247 .lkp_value = "reply",
5248 .lkp_data_type = NLA_U32
5250 [LNET_NET_LOCAL_NI_MSG_STATS_ATTR_ACK_COUNT] = {
5252 .lkp_data_type = NLA_U32
5254 [LNET_NET_LOCAL_NI_MSG_STATS_ATTR_HELLO_COUNT] = {
5255 .lkp_value = "hello",
5256 .lkp_data_type = NLA_U32
5261 static const struct ln_key_list local_ni_health_stats_list = {
5262 .lkl_maxattr = LNET_NET_LOCAL_NI_HEALTH_STATS_ATTR_MAX,
5264 [LNET_NET_LOCAL_NI_HEALTH_STATS_ATTR_FATAL_ERRORS] = {
5265 .lkp_value = "fatal_error",
5266 .lkp_data_type = NLA_S32
5268 [LNET_NET_LOCAL_NI_HEALTH_STATS_ATTR_LEVEL] = {
5269 .lkp_value = "health value",
5270 .lkp_data_type = NLA_S32
5272 [LNET_NET_LOCAL_NI_HEALTH_STATS_ATTR_INTERRUPTS] = {
5273 .lkp_value = "interrupts",
5274 .lkp_data_type = NLA_U32
5276 [LNET_NET_LOCAL_NI_HEALTH_STATS_ATTR_DROPPED] = {
5277 .lkp_value = "dropped",
5278 .lkp_data_type = NLA_U32
5280 [LNET_NET_LOCAL_NI_HEALTH_STATS_ATTR_ABORTED] = {
5281 .lkp_value = "aborted",
5282 .lkp_data_type = NLA_U32
5284 [LNET_NET_LOCAL_NI_HEALTH_STATS_ATTR_NO_ROUTE] = {
5285 .lkp_value = "no route",
5286 .lkp_data_type = NLA_U32
5288 [LNET_NET_LOCAL_NI_HEALTH_STATS_ATTR_TIMEOUTS] = {
5289 .lkp_value = "timeouts",
5290 .lkp_data_type = NLA_U32
5292 [LNET_NET_LOCAL_NI_HEALTH_STATS_ATTR_ERROR] = {
5293 .lkp_value = "error",
5294 .lkp_data_type = NLA_U32
5296 [LNET_NET_LOCAL_NI_HEALTH_STATS_ATTR_PING_COUNT] = {
5297 .lkp_value = "ping_count",
5298 .lkp_data_type = NLA_U32,
5300 [LNET_NET_LOCAL_NI_HEALTH_STATS_ATTR_NEXT_PING] = {
5301 .lkp_value = "next_ping",
5302 .lkp_data_type = NLA_U64
5307 static const struct ln_key_list local_ni_tunables_list = {
5308 .lkl_maxattr = LNET_NET_LOCAL_NI_TUNABLES_ATTR_MAX,
5310 [LNET_NET_LOCAL_NI_TUNABLES_ATTR_PEER_TIMEOUT] = {
5311 .lkp_value = "peer_timeout",
5312 .lkp_data_type = NLA_S32
5314 [LNET_NET_LOCAL_NI_TUNABLES_ATTR_PEER_CREDITS] = {
5315 .lkp_value = "peer_credits",
5316 .lkp_data_type = NLA_S32
5318 [LNET_NET_LOCAL_NI_TUNABLES_ATTR_PEER_BUFFER_CREDITS] = {
5319 .lkp_value = "peer_buffer_credits",
5320 .lkp_data_type = NLA_S32
5322 [LNET_NET_LOCAL_NI_TUNABLES_ATTR_CREDITS] = {
5323 .lkp_value = "credits",
5324 .lkp_data_type = NLA_S32
5329 /* Use an index since the traversal is across LNet nets and ni collections */
5330 struct lnet_genl_net_list {
5331 unsigned int lngl_net_id;
5332 unsigned int lngl_idx;
5335 static inline struct lnet_genl_net_list *
5336 lnet_net_dump_ctx(struct netlink_callback *cb)
5338 return (struct lnet_genl_net_list *)cb->args[0];
5341 static int lnet_net_show_done(struct netlink_callback *cb)
5343 struct lnet_genl_net_list *nlist = lnet_net_dump_ctx(cb);
5346 LIBCFS_FREE(nlist, sizeof(*nlist));
5353 /* LNet net ->start() handler for GET requests */
5354 static int lnet_net_show_start(struct netlink_callback *cb)
5356 struct genlmsghdr *gnlh = nlmsg_data(cb->nlh);
5357 #ifdef HAVE_NL_PARSE_WITH_EXT_ACK
5358 struct netlink_ext_ack *extack = NULL;
5360 struct lnet_genl_net_list *nlist;
5361 int msg_len = genlmsg_len(gnlh);
5362 struct nlattr *params, *top;
5365 #ifdef HAVE_NL_DUMP_WITH_EXT_ACK
5366 extack = cb->extack;
5368 if (the_lnet.ln_refcount == 0) {
5369 NL_SET_ERR_MSG(extack, "LNet stack down");
5373 LIBCFS_ALLOC(nlist, sizeof(*nlist));
5377 nlist->lngl_net_id = LNET_NET_ANY;
5378 nlist->lngl_idx = 0;
5379 cb->args[0] = (long)nlist;
5384 params = genlmsg_data(gnlh);
5385 if (!(nla_type(params) & LN_SCALAR_ATTR_LIST)) {
5386 NL_SET_ERR_MSG(extack, "invalid configuration");
5390 nla_for_each_nested(top, params, rem) {
5394 nla_for_each_nested(net, top, rem2) {
5395 char filter[LNET_NIDSTR_SIZE];
5397 if (nla_type(net) != LN_SCALAR_ATTR_VALUE ||
5398 nla_strcmp(net, "net type") != 0)
5401 net = nla_next(net, &rem2);
5402 if (nla_type(net) != LN_SCALAR_ATTR_VALUE) {
5403 NL_SET_ERR_MSG(extack, "invalid config param");
5404 GOTO(report_err, rc = -EINVAL);
5407 rc = nla_strscpy(filter, net, sizeof(filter));
5409 NL_SET_ERR_MSG(extack, "failed to get param");
5410 GOTO(report_err, rc);
5414 nlist->lngl_net_id = libcfs_str2net(filter);
5415 if (nlist->lngl_net_id == LNET_NET_ANY) {
5416 NL_SET_ERR_MSG(extack, "cannot parse net");
5417 GOTO(report_err, rc = -ENOENT);
5423 lnet_net_show_done(cb);
5428 static int lnet_net_show_dump(struct sk_buff *msg,
5429 struct netlink_callback *cb)
5431 struct lnet_genl_net_list *nlist = lnet_net_dump_ctx(cb);
5432 #ifdef HAVE_NL_PARSE_WITH_EXT_ACK
5433 struct netlink_ext_ack *extack = NULL;
5435 struct genlmsghdr *gnlh = nlmsg_data(cb->nlh);
5436 int portid = NETLINK_CB(cb->skb).portid;
5437 bool found = false, started = true;
5438 const struct lnet_lnd *lnd = NULL;
5439 int idx = nlist->lngl_idx, rc = 0;
5440 int seq = cb->nlh->nlmsg_seq;
5441 struct lnet_net *net;
5444 #ifdef HAVE_NL_DUMP_WITH_EXT_ACK
5445 extack = cb->extack;
5447 lnet_net_lock(LNET_LOCK_EX);
5449 list_for_each_entry(net, &the_lnet.ln_nets, net_list) {
5450 struct nlattr *local_ni, *ni_attr;
5454 if (nlist->lngl_net_id != LNET_NET_ANY &&
5455 nlist->lngl_net_id != net->net_id)
5458 if (gnlh->version && LNET_NETTYP(net->net_id) != LOLND) {
5459 if (!net->net_lnd) {
5460 NL_SET_ERR_MSG(extack,
5461 "LND not setup for NI");
5462 GOTO(net_unlock, rc = -ENODEV);
5464 if (net->net_lnd != lnd)
5470 /* We need to resend the key table every time the base LND
5474 const struct ln_key_list *all[] = {
5475 &net_props_list, &local_ni_list,
5476 &local_ni_interfaces_list,
5477 &local_ni_stats_list,
5479 &udsp_info_pref_nids_list,
5480 &udsp_info_pref_nids_list,
5481 &local_ni_msg_stats_list,
5482 &local_ni_msg_stats_list,
5483 &local_ni_msg_stats_list,
5484 &local_ni_health_stats_list,
5485 &local_ni_tunables_list,
5486 NULL, /* lnd tunables */
5489 int flags = NLM_F_CREATE | NLM_F_MULTI;
5492 all[ARRAY_SIZE(all) - 2] = lnd->lnd_keys;
5494 flags |= NLM_F_REPLACE;
5498 rc = lnet_genl_send_scalar_list(msg, portid, seq,
5499 &lnet_family, flags,
5500 LNET_CMD_NETS, all);
5502 NL_SET_ERR_MSG(extack, "failed to send key table");
5503 GOTO(net_unlock, rc);
5507 hdr = genlmsg_put(msg, portid, seq, &lnet_family,
5508 NLM_F_MULTI, LNET_CMD_NETS);
5510 NL_SET_ERR_MSG(extack, "failed to send values");
5511 GOTO(net_unlock, rc = -EMSGSIZE);
5515 nla_put_string(msg, LNET_NET_ATTR_HDR, "");
5519 nla_put_string(msg, LNET_NET_ATTR_TYPE,
5520 libcfs_net2str(net->net_id));
5522 local_ni = nla_nest_start(msg, LNET_NET_ATTR_LOCAL);
5523 list_for_each_entry(ni, &net->net_ni_list, ni_netlist) {
5524 char *status = "up";
5526 if (idx++ < nlist->lngl_idx)
5529 ni_attr = nla_nest_start(msg, dev++);
5532 nla_put_string(msg, LNET_NET_LOCAL_NI_ATTR_NID,
5533 libcfs_nidstr(&ni->ni_nid));
5534 if (!nid_is_lo0(&ni->ni_nid) &&
5535 lnet_ni_get_status_locked(ni) != LNET_NI_STATUS_UP)
5537 nla_put_string(msg, LNET_NET_LOCAL_NI_ATTR_STATUS,
5540 if (!nid_is_lo0(&ni->ni_nid) && ni->ni_interface) {
5541 struct nlattr *intf_nest, *intf_attr;
5543 intf_nest = nla_nest_start(msg,
5544 LNET_NET_LOCAL_NI_ATTR_INTERFACE);
5545 intf_attr = nla_nest_start(msg, 0);
5547 LNET_NET_LOCAL_NI_INTF_ATTR_TYPE,
5549 nla_nest_end(msg, intf_attr);
5550 nla_nest_end(msg, intf_nest);
5553 if (gnlh->version) {
5554 char cpts[LNET_MAX_SHOW_NUM_CPT * 4 + 4], *cpt;
5555 struct lnet_ioctl_element_msg_stats msg_stats;
5556 struct lnet_ioctl_element_stats stats;
5557 size_t buf_len = sizeof(cpts), len;
5558 struct nlattr *health_attr, *health_stats;
5559 struct nlattr *send_attr, *send_stats;
5560 struct nlattr *recv_attr, *recv_stats;
5561 struct nlattr *drop_attr, *drop_stats;
5562 struct nlattr *stats_attr, *ni_stats;
5563 struct nlattr *tun_attr, *ni_tun;
5566 stats.iel_send_count = lnet_sum_stats(&ni->ni_stats,
5567 LNET_STATS_TYPE_SEND);
5568 stats.iel_recv_count = lnet_sum_stats(&ni->ni_stats,
5569 LNET_STATS_TYPE_RECV);
5570 stats.iel_drop_count = lnet_sum_stats(&ni->ni_stats,
5571 LNET_STATS_TYPE_DROP);
5574 stats_attr = nla_nest_start(msg, LNET_NET_LOCAL_NI_ATTR_STATS);
5575 ni_stats = nla_nest_start(msg, 0);
5576 nla_put_u32(msg, LNET_NET_LOCAL_NI_STATS_ATTR_SEND_COUNT,
5577 stats.iel_send_count);
5578 nla_put_u32(msg, LNET_NET_LOCAL_NI_STATS_ATTR_RECV_COUNT,
5579 stats.iel_recv_count);
5580 nla_put_u32(msg, LNET_NET_LOCAL_NI_STATS_ATTR_DROP_COUNT,
5581 stats.iel_drop_count);
5582 nla_nest_end(msg, ni_stats);
5583 nla_nest_end(msg, stats_attr);
5585 if (gnlh->version < 4)
5589 rc = lnet_udsp_info_send(msg, LNET_NET_LOCAL_NI_ATTR_UDSP_INFO,
5590 &ni->ni_nid, false);
5592 NL_SET_ERR_MSG(extack,
5593 "Failed to get udsp info");
5594 genlmsg_cancel(msg, hdr);
5595 GOTO(net_unlock, rc = -ENOMEM);
5598 if (gnlh->version < 2)
5599 goto skip_msg_stats;
5601 msg_stats.im_idx = idx - 1;
5602 rc = lnet_get_ni_stats(&msg_stats);
5604 NL_SET_ERR_MSG(extack,
5605 "failed to get msg stats");
5606 genlmsg_cancel(msg, hdr);
5607 GOTO(net_unlock, rc = -ENOMEM);
5610 send_stats = nla_nest_start(msg, LNET_NET_LOCAL_NI_ATTR_SEND_STATS);
5611 send_attr = nla_nest_start(msg, 0);
5612 nla_put_u32(msg, LNET_NET_LOCAL_NI_MSG_STATS_ATTR_PUT_COUNT,
5613 msg_stats.im_send_stats.ico_get_count);
5614 nla_put_u32(msg, LNET_NET_LOCAL_NI_MSG_STATS_ATTR_GET_COUNT,
5615 msg_stats.im_send_stats.ico_put_count);
5616 nla_put_u32(msg, LNET_NET_LOCAL_NI_MSG_STATS_ATTR_REPLY_COUNT,
5617 msg_stats.im_send_stats.ico_reply_count);
5618 nla_put_u32(msg, LNET_NET_LOCAL_NI_MSG_STATS_ATTR_ACK_COUNT,
5619 msg_stats.im_send_stats.ico_ack_count);
5620 nla_put_u32(msg, LNET_NET_LOCAL_NI_MSG_STATS_ATTR_HELLO_COUNT,
5621 msg_stats.im_send_stats.ico_hello_count);
5622 nla_nest_end(msg, send_attr);
5623 nla_nest_end(msg, send_stats);
5625 recv_stats = nla_nest_start(msg, LNET_NET_LOCAL_NI_ATTR_RECV_STATS);
5626 recv_attr = nla_nest_start(msg, 0);
5627 nla_put_u32(msg, LNET_NET_LOCAL_NI_MSG_STATS_ATTR_PUT_COUNT,
5628 msg_stats.im_recv_stats.ico_get_count);
5629 nla_put_u32(msg, LNET_NET_LOCAL_NI_MSG_STATS_ATTR_GET_COUNT,
5630 msg_stats.im_recv_stats.ico_put_count);
5631 nla_put_u32(msg, LNET_NET_LOCAL_NI_MSG_STATS_ATTR_REPLY_COUNT,
5632 msg_stats.im_recv_stats.ico_reply_count);
5633 nla_put_u32(msg, LNET_NET_LOCAL_NI_MSG_STATS_ATTR_ACK_COUNT,
5634 msg_stats.im_recv_stats.ico_ack_count);
5635 nla_put_u32(msg, LNET_NET_LOCAL_NI_MSG_STATS_ATTR_HELLO_COUNT,
5636 msg_stats.im_recv_stats.ico_hello_count);
5637 nla_nest_end(msg, recv_attr);
5638 nla_nest_end(msg, recv_stats);
5640 drop_stats = nla_nest_start(msg,
5641 LNET_NET_LOCAL_NI_ATTR_DROPPED_STATS);
5642 drop_attr = nla_nest_start(msg, 0);
5643 nla_put_u32(msg, LNET_NET_LOCAL_NI_MSG_STATS_ATTR_PUT_COUNT,
5644 msg_stats.im_drop_stats.ico_get_count);
5645 nla_put_u32(msg, LNET_NET_LOCAL_NI_MSG_STATS_ATTR_GET_COUNT,
5646 msg_stats.im_drop_stats.ico_put_count);
5647 nla_put_u32(msg, LNET_NET_LOCAL_NI_MSG_STATS_ATTR_REPLY_COUNT,
5648 msg_stats.im_drop_stats.ico_reply_count);
5649 nla_put_u32(msg, LNET_NET_LOCAL_NI_MSG_STATS_ATTR_ACK_COUNT,
5650 msg_stats.im_drop_stats.ico_ack_count);
5651 nla_put_u32(msg, LNET_NET_LOCAL_NI_MSG_STATS_ATTR_HELLO_COUNT,
5652 msg_stats.im_drop_stats.ico_hello_count);
5653 nla_nest_end(msg, drop_attr);
5654 nla_nest_end(msg, drop_stats);
5657 health_stats = nla_nest_start(msg,
5658 LNET_NET_LOCAL_NI_ATTR_HEALTH_STATS);
5659 health_attr = nla_nest_start(msg, 0);
5660 nla_put_s32(msg, LNET_NET_LOCAL_NI_HEALTH_STATS_ATTR_FATAL_ERRORS,
5661 atomic_read(&ni->ni_fatal_error_on));
5662 nla_put_s32(msg, LNET_NET_LOCAL_NI_HEALTH_STATS_ATTR_LEVEL,
5663 atomic_read(&ni->ni_healthv));
5664 nla_put_u32(msg, LNET_NET_LOCAL_NI_HEALTH_STATS_ATTR_INTERRUPTS,
5665 atomic_read(&ni->ni_hstats.hlt_local_interrupt));
5666 nla_put_u32(msg, LNET_NET_LOCAL_NI_HEALTH_STATS_ATTR_DROPPED,
5667 atomic_read(&ni->ni_hstats.hlt_local_dropped));
5668 nla_put_u32(msg, LNET_NET_LOCAL_NI_HEALTH_STATS_ATTR_ABORTED,
5669 atomic_read(&ni->ni_hstats.hlt_local_aborted));
5670 nla_put_u32(msg, LNET_NET_LOCAL_NI_HEALTH_STATS_ATTR_NO_ROUTE,
5671 atomic_read(&ni->ni_hstats.hlt_local_no_route));
5672 nla_put_u32(msg, LNET_NET_LOCAL_NI_HEALTH_STATS_ATTR_TIMEOUTS,
5673 atomic_read(&ni->ni_hstats.hlt_local_timeout));
5674 nla_put_u32(msg, LNET_NET_LOCAL_NI_HEALTH_STATS_ATTR_ERROR,
5675 atomic_read(&ni->ni_hstats.hlt_local_error));
5676 nla_put_u32(msg, LNET_NET_LOCAL_NI_HEALTH_STATS_ATTR_PING_COUNT,
5678 nla_put_u64_64bit(msg, LNET_NET_LOCAL_NI_HEALTH_STATS_ATTR_NEXT_PING,
5680 LNET_NET_LOCAL_NI_HEALTH_STATS_ATTR_PAD);
5681 nla_nest_end(msg, health_attr);
5682 nla_nest_end(msg, health_stats);
5684 /* Report net tunables */
5685 tun_attr = nla_nest_start(msg, LNET_NET_LOCAL_NI_ATTR_TUNABLES);
5686 ni_tun = nla_nest_start(msg, 0);
5687 nla_put_s32(msg, LNET_NET_LOCAL_NI_TUNABLES_ATTR_PEER_TIMEOUT,
5688 ni->ni_net->net_tunables.lct_peer_timeout);
5689 nla_put_s32(msg, LNET_NET_LOCAL_NI_TUNABLES_ATTR_PEER_CREDITS,
5690 ni->ni_net->net_tunables.lct_peer_tx_credits);
5691 nla_put_s32(msg, LNET_NET_LOCAL_NI_TUNABLES_ATTR_PEER_BUFFER_CREDITS,
5692 ni->ni_net->net_tunables.lct_peer_rtr_credits);
5693 nla_put_s32(msg, LNET_NET_LOCAL_NI_TUNABLES_ATTR_CREDITS,
5694 ni->ni_net->net_tunables.lct_max_tx_credits);
5695 nla_nest_end(msg, ni_tun);
5697 nla_nest_end(msg, tun_attr);
5699 if (lnd && lnd->lnd_nl_get && lnd->lnd_keys) {
5700 struct nlattr *lnd_tun_attr, *lnd_ni_tun;
5702 lnd_tun_attr = nla_nest_start(msg,
5703 LNET_NET_LOCAL_NI_ATTR_LND_TUNABLES);
5704 lnd_ni_tun = nla_nest_start(msg, 0);
5705 rc = lnd->lnd_nl_get(LNET_CMD_NETS, msg,
5706 LNET_NET_LOCAL_NI_ATTR_LND_TUNABLES,
5709 NL_SET_ERR_MSG(extack,
5710 "failed to get lnd tunables");
5711 genlmsg_cancel(msg, hdr);
5712 GOTO(net_unlock, rc);
5714 nla_nest_end(msg, lnd_ni_tun);
5715 nla_nest_end(msg, lnd_tun_attr);
5718 nla_put_s32(msg, LNET_NET_LOCAL_NI_DEV_CPT, ni->ni_dev_cpt);
5720 /* Report cpts. We could send this as a nested list
5721 * of integers but older versions of the tools
5722 * except a string. The new versions can handle
5723 * both formats so in the future we can change
5724 * this to a nested list.
5726 len = snprintf(cpts, buf_len, "\"[");
5730 if (ni->ni_ncpts == LNET_CPT_NUMBER && !ni->ni_cpts) {
5731 for (j = 0; j < ni->ni_ncpts; j++) {
5732 len = snprintf(cpt, buf_len, "%d,", j);
5738 ni->ni_cpts && j < ni->ni_ncpts &&
5739 j < LNET_MAX_SHOW_NUM_CPT; j++) {
5740 len = snprintf(cpt, buf_len, "%d,",
5746 snprintf(cpt - 1, sizeof(cpts), "]\"");
5748 nla_put_string(msg, LNET_NET_LOCAL_NI_CPTS, cpts);
5752 nla_nest_end(msg, ni_attr);
5754 nla_nest_end(msg, local_ni);
5756 genlmsg_end(msg, hdr);
5760 struct nlmsghdr *nlh = nlmsg_hdr(msg);
5762 nlmsg_cancel(msg, nlh);
5763 NL_SET_ERR_MSG(extack, "Network is down");
5766 nlist->lngl_idx = idx;
5768 lnet_net_unlock(LNET_LOCK_EX);
5770 return lnet_nl_send_error(cb->skb, portid, seq, rc);
5773 #ifndef HAVE_NETLINK_CALLBACK_START
5774 static int lnet_old_net_show_dump(struct sk_buff *msg,
5775 struct netlink_callback *cb)
5778 int rc = lnet_net_show_start(cb);
5784 return lnet_net_show_dump(msg, cb);
5788 static int lnet_genl_parse_tunables(struct nlattr *settings,
5789 struct lnet_ioctl_config_lnd_tunables *tun)
5791 struct nlattr *param;
5794 nla_for_each_nested(param, settings, rem) {
5795 int type = LNET_NET_LOCAL_NI_TUNABLES_ATTR_UNSPEC;
5798 if (nla_type(param) != LN_SCALAR_ATTR_VALUE)
5801 if (nla_strcmp(param, "peer_timeout") == 0)
5802 type = LNET_NET_LOCAL_NI_TUNABLES_ATTR_PEER_TIMEOUT;
5803 else if (nla_strcmp(param, "peer_credits") == 0)
5804 type = LNET_NET_LOCAL_NI_TUNABLES_ATTR_PEER_CREDITS;
5805 else if (nla_strcmp(param, "peer_buffer_credits") == 0)
5806 type = LNET_NET_LOCAL_NI_TUNABLES_ATTR_PEER_BUFFER_CREDITS;
5807 else if (nla_strcmp(param, "credits") == 0)
5808 type = LNET_NET_LOCAL_NI_TUNABLES_ATTR_CREDITS;
5810 param = nla_next(param, &rem);
5811 if (nla_type(param) != LN_SCALAR_ATTR_INT_VALUE)
5814 num = nla_get_s64(param);
5816 case LNET_NET_LOCAL_NI_TUNABLES_ATTR_PEER_TIMEOUT:
5818 tun->lt_cmn.lct_peer_timeout = num;
5820 case LNET_NET_LOCAL_NI_TUNABLES_ATTR_PEER_CREDITS:
5822 tun->lt_cmn.lct_peer_tx_credits = num;
5824 case LNET_NET_LOCAL_NI_TUNABLES_ATTR_PEER_BUFFER_CREDITS:
5826 tun->lt_cmn.lct_peer_rtr_credits = num;
5828 case LNET_NET_LOCAL_NI_TUNABLES_ATTR_CREDITS:
5830 tun->lt_cmn.lct_max_tx_credits = num;
5840 static int lnet_genl_parse_lnd_tunables(struct nlattr *settings,
5841 struct lnet_lnd_tunables *tun,
5842 const struct lnet_lnd *lnd)
5844 const struct ln_key_list *list = lnd->lnd_keys;
5845 struct nlattr *param;
5849 /* silently ignore these setting if the LND driver doesn't
5850 * support any LND tunables
5852 if (!list || !lnd->lnd_nl_set || !list->lkl_maxattr)
5855 nla_for_each_nested(param, settings, rem) {
5856 if (nla_type(param) != LN_SCALAR_ATTR_VALUE)
5859 for (i = 1; i <= list->lkl_maxattr; i++) {
5860 if (!list->lkl_list[i].lkp_value ||
5861 nla_strcmp(param, list->lkl_list[i].lkp_value) != 0)
5864 param = nla_next(param, &rem);
5865 rc = lnd->lnd_nl_set(LNET_CMD_NETS, param, i, tun);
5875 lnet_genl_parse_local_ni(struct nlattr *entry, struct genl_info *info,
5876 int net_id, struct lnet_ioctl_config_ni *conf,
5879 bool create = info->nlhdr->nlmsg_flags & NLM_F_CREATE;
5880 struct lnet_ioctl_config_lnd_tunables *tun;
5881 struct nlattr *settings;
5884 LIBCFS_ALLOC(tun, sizeof(struct lnet_ioctl_config_lnd_tunables));
5886 GENL_SET_ERR_MSG(info, "cannot allocate memory for tunables");
5887 GOTO(out, rc = -ENOMEM);
5890 /* Use LND defaults */
5891 tun->lt_cmn.lct_peer_timeout = -1;
5892 tun->lt_cmn.lct_peer_tx_credits = -1;
5893 tun->lt_cmn.lct_peer_rtr_credits = -1;
5894 tun->lt_cmn.lct_max_tx_credits = -1;
5895 conf->lic_ncpts = 0;
5897 nla_for_each_nested(settings, entry, rem3) {
5898 if (nla_type(settings) != LN_SCALAR_ATTR_VALUE)
5901 if (nla_strcmp(settings, "interfaces") == 0) {
5902 struct nlattr *intf;
5905 settings = nla_next(settings, &rem3);
5906 if (nla_type(settings) !=
5907 LN_SCALAR_ATTR_LIST) {
5908 GENL_SET_ERR_MSG(info,
5909 "invalid interfaces");
5910 GOTO(out, rc = -EINVAL);
5913 nla_for_each_nested(intf, settings, rem4) {
5914 intf = nla_next(intf, &rem4);
5915 if (nla_type(intf) !=
5916 LN_SCALAR_ATTR_VALUE) {
5917 GENL_SET_ERR_MSG(info,
5918 "cannot parse interface");
5919 GOTO(out, rc = -EINVAL);
5922 rc = nla_strscpy(conf->lic_ni_intf, intf,
5923 sizeof(conf->lic_ni_intf));
5925 GENL_SET_ERR_MSG(info,
5926 "failed to parse interfaces");
5931 } else if (nla_strcmp(settings, "tunables") == 0) {
5932 settings = nla_next(settings, &rem3);
5933 if (nla_type(settings) !=
5934 LN_SCALAR_ATTR_LIST) {
5935 GENL_SET_ERR_MSG(info,
5936 "invalid tunables");
5937 GOTO(out, rc = -EINVAL);
5940 rc = lnet_genl_parse_tunables(settings, tun);
5942 GENL_SET_ERR_MSG(info,
5943 "failed to parse tunables");
5946 } else if ((nla_strcmp(settings, "lnd tunables") == 0)) {
5947 const struct lnet_lnd *lnd;
5949 lnd = lnet_load_lnd(LNET_NETTYP(net_id));
5951 GENL_SET_ERR_MSG(info,
5952 "LND type not supported");
5953 GOTO(out, rc = PTR_ERR(lnd));
5956 settings = nla_next(settings, &rem3);
5957 if (nla_type(settings) !=
5958 LN_SCALAR_ATTR_LIST) {
5959 GENL_SET_ERR_MSG(info,
5960 "lnd tunables should be list\n");
5961 GOTO(out, rc = -EINVAL);
5964 rc = lnet_genl_parse_lnd_tunables(settings,
5967 GENL_SET_ERR_MSG(info,
5968 "failed to parse lnd tunables");
5971 } else if (nla_strcmp(settings, "CPT") == 0) {
5975 settings = nla_next(settings, &rem3);
5976 if (nla_type(settings) != LN_SCALAR_ATTR_LIST) {
5977 GENL_SET_ERR_MSG(info,
5978 "CPT should be list");
5979 GOTO(out, rc = -EINVAL);
5982 nla_for_each_nested(cpt, settings, rem4) {
5985 if (nla_type(cpt) !=
5986 LN_SCALAR_ATTR_INT_VALUE) {
5987 GENL_SET_ERR_MSG(info,
5988 "invalid CPT config");
5989 GOTO(out, rc = -EINVAL);
5992 core = nla_get_s64(cpt);
5993 if (core >= LNET_CPT_NUMBER) {
5994 GENL_SET_ERR_MSG(info,
5995 "invalid CPT value");
5996 GOTO(out, rc = -ERANGE);
5999 conf->lic_cpts[conf->lic_ncpts] = core;
6006 struct lnet_net *net;
6010 if (!strlen(conf->lic_ni_intf)) {
6011 GENL_SET_ERR_MSG(info,
6012 "interface is missing");
6016 lnet_net_lock(LNET_LOCK_EX);
6017 net = lnet_get_net_locked(net_id);
6019 GENL_SET_ERR_MSG(info,
6020 "LNet net doesn't exist");
6021 lnet_net_unlock(LNET_LOCK_EX);
6025 list_for_each_entry(ni, &net->net_ni_list,
6027 if (!ni->ni_interface ||
6028 strcmp(ni->ni_interface,
6029 conf->lic_ni_intf) != 0)
6032 lnet_net_unlock(LNET_LOCK_EX);
6033 rc = lnet_dyn_del_ni(&ni->ni_nid);
6035 GENL_SET_ERR_MSG(info,
6036 "cannot del LNet NI");
6042 if (rc < 0) { /* will be -ENODEV */
6043 GENL_SET_ERR_MSG(info,
6044 "interface invalid for deleting LNet NI");
6045 lnet_net_unlock(LNET_LOCK_EX);
6048 if (!strlen(conf->lic_ni_intf)) {
6049 GENL_SET_ERR_MSG(info,
6050 "interface is missing");
6054 rc = lnet_dyn_add_ni(conf, net_id, tun);
6057 GENL_SET_ERR_MSG(info,
6058 "cannot parse net");
6061 GENL_SET_ERR_MSG(info,
6065 GENL_SET_ERR_MSG(info,
6066 "cannot add LNet NI");
6073 LIBCFS_FREE(tun, sizeof(struct lnet_ioctl_config_lnd_tunables));
6078 static int lnet_net_cmd(struct sk_buff *skb, struct genl_info *info)
6080 struct nlmsghdr *nlh = nlmsg_hdr(skb);
6081 struct genlmsghdr *gnlh = nlmsg_data(nlh);
6082 struct nlattr *params = genlmsg_data(gnlh);
6083 int msg_len, rem, rc = 0;
6084 struct nlattr *attr;
6086 msg_len = genlmsg_len(gnlh);
6088 GENL_SET_ERR_MSG(info, "no configuration");
6092 if (!(nla_type(params) & LN_SCALAR_ATTR_LIST)) {
6093 GENL_SET_ERR_MSG(info, "invalid configuration");
6097 nla_for_each_nested(attr, params, rem) {
6098 bool ni_list = false, ipnets = false;
6099 struct lnet_ioctl_config_ni conf;
6100 u32 net_id = LNET_NET_ANY;
6101 struct nlattr *entry;
6104 if (nla_type(attr) != LN_SCALAR_ATTR_LIST)
6107 nla_for_each_nested(entry, attr, rem2) {
6108 switch (nla_type(entry)) {
6109 case LN_SCALAR_ATTR_VALUE: {
6112 memset(&conf, 0, sizeof(conf));
6113 if (nla_strcmp(entry, "ip2net") == 0) {
6114 entry = nla_next(entry, &rem2);
6115 if (nla_type(entry) !=
6116 LN_SCALAR_ATTR_VALUE) {
6117 GENL_SET_ERR_MSG(info,
6118 "ip2net has invalid key");
6119 GOTO(out, rc = -EINVAL);
6122 len = nla_strscpy(conf.lic_legacy_ip2nets,
6124 sizeof(conf.lic_legacy_ip2nets));
6126 GENL_SET_ERR_MSG(info,
6127 "ip2net key string is invalid");
6128 GOTO(out, rc = len);
6132 } else if (nla_strcmp(entry, "net type") == 0) {
6133 char tmp[LNET_NIDSTR_SIZE];
6135 entry = nla_next(entry, &rem2);
6136 if (nla_type(entry) !=
6137 LN_SCALAR_ATTR_VALUE) {
6138 GENL_SET_ERR_MSG(info,
6139 "net type has invalid key");
6140 GOTO(out, rc = -EINVAL);
6143 len = nla_strscpy(tmp, entry,
6146 GENL_SET_ERR_MSG(info,
6147 "net type key string is invalid");
6148 GOTO(out, rc = len);
6151 net_id = libcfs_str2net(tmp);
6153 GENL_SET_ERR_MSG(info,
6154 "cannot parse net");
6155 GOTO(out, rc = -ENODEV);
6157 if (LNET_NETTYP(net_id) == LOLND) {
6158 GENL_SET_ERR_MSG(info,
6159 "setting @lo not allowed");
6160 GOTO(out, rc = -ENODEV);
6162 conf.lic_legacy_ip2nets[0] = '\0';
6163 conf.lic_ni_intf[0] = '\0';
6170 case LN_SCALAR_ATTR_LIST: {
6171 struct nlattr *interface;
6175 nla_for_each_nested(interface, entry, rem3) {
6176 rc = lnet_genl_parse_local_ni(interface, info,
6184 /* it is possible a newer version of the user land send
6185 * values older kernels doesn't handle. So silently
6186 * ignore these values
6193 /* Handle case of just sent NET with no list of NIDs */
6194 if (!(info->nlhdr->nlmsg_flags & NLM_F_CREATE) && !ni_list) {
6195 rc = lnet_dyn_del_net(net_id);
6197 GENL_SET_ERR_MSG(info,
6198 "cannot del network");
6200 } else if ((info->nlhdr->nlmsg_flags & NLM_F_CREATE) &&
6201 ipnets && ni_list) {
6202 rc = lnet_handle_legacy_ip2nets(conf.lic_legacy_ip2nets,
6205 GENL_SET_ERR_MSG(info,
6206 "cannot setup ip2nets");
6213 /* Called with ln_api_mutex */
6214 static int lnet_parse_peer_nis(struct nlattr *rlist, struct genl_info *info,
6215 struct lnet_nid *pnid, bool mr,
6218 struct lnet_nid snid = LNET_ANY_NID;
6219 struct nlattr *props;
6223 nla_for_each_nested(props, rlist, rem) {
6224 if (nla_type(props) != LN_SCALAR_ATTR_VALUE)
6227 if (nla_strcmp(props, "nid") == 0) {
6228 char nidstr[LNET_NIDSTR_SIZE];
6230 props = nla_next(props, &rem);
6231 if (nla_type(props) != LN_SCALAR_ATTR_VALUE) {
6232 GENL_SET_ERR_MSG(info,
6233 "invalid secondary NID");
6234 GOTO(report_err, rc = -EINVAL);
6237 rc = nla_strscpy(nidstr, props, sizeof(nidstr));
6239 GENL_SET_ERR_MSG(info,
6240 "failed to get secondary NID");
6241 GOTO(report_err, rc);
6244 rc = libcfs_strnid(&snid, strim(nidstr));
6246 GENL_SET_ERR_MSG(info, "unsupported secondary NID");
6247 GOTO(report_err, rc);
6250 if (LNET_NID_IS_ANY(&snid) || nid_same(&snid, pnid))
6251 *create_some = false;
6252 } else if (nla_strcmp(props, "health stats") == 0) {
6253 struct nlattr *health;
6256 props = nla_next(props, &rem);
6257 if (nla_type(props) !=
6258 LN_SCALAR_ATTR_LIST) {
6259 GENL_SET_ERR_MSG(info,
6260 "invalid health configuration");
6261 GOTO(report_err, rc = -EINVAL);
6264 nla_for_each_nested(health, props, rem2) {
6265 if (nla_type(health) != LN_SCALAR_ATTR_VALUE ||
6266 nla_strcmp(health, "health value") != 0) {
6267 GENL_SET_ERR_MSG(info,
6268 "wrong health config format");
6269 GOTO(report_err, rc = -EINVAL);
6272 health = nla_next(health, &rem2);
6273 if (nla_type(health) !=
6274 LN_SCALAR_ATTR_INT_VALUE) {
6275 GENL_SET_ERR_MSG(info,
6276 "invalid health config format");
6277 GOTO(report_err, rc = -EINVAL);
6280 num = nla_get_s64(health);
6281 clamp_t(s64, num, 0, LNET_MAX_HEALTH_VALUE);
6286 if (info->nlhdr->nlmsg_flags & NLM_F_REPLACE && num != -1) {
6287 lnet_peer_ni_set_healthv(pnid, num, !*create_some);
6288 } else if (info->nlhdr->nlmsg_flags & NLM_F_CREATE) {
6289 bool lock_prim = info->nlhdr->nlmsg_flags & NLM_F_EXCL;
6291 rc = lnet_user_add_peer_ni(pnid, &snid, mr, lock_prim);
6293 GENL_SET_ERR_MSG(info,
6294 "failed to add peer");
6295 } else if (!(info->nlhdr->nlmsg_flags & NLM_F_CREATE) && *create_some) {
6296 bool force = info->nlhdr->nlmsg_flags & NLM_F_EXCL;
6298 rc = lnet_del_peer_ni(pnid, &snid, force);
6300 GENL_SET_ERR_MSG(info,
6301 "failed to del peer");
6307 static int lnet_peer_ni_cmd(struct sk_buff *skb, struct genl_info *info)
6309 struct nlmsghdr *nlh = nlmsg_hdr(skb);
6310 struct genlmsghdr *gnlh = nlmsg_data(nlh);
6311 struct nlattr *params = genlmsg_data(gnlh);
6312 int msg_len, rem, rc = 0;
6313 struct lnet_nid pnid;
6314 struct nlattr *attr;
6316 mutex_lock(&the_lnet.ln_api_mutex);
6317 if (the_lnet.ln_state != LNET_STATE_RUNNING) {
6318 GENL_SET_ERR_MSG(info, "Network is down");
6319 mutex_unlock(&the_lnet.ln_api_mutex);
6323 msg_len = genlmsg_len(gnlh);
6325 GENL_SET_ERR_MSG(info, "no configuration");
6326 mutex_unlock(&the_lnet.ln_api_mutex);
6330 if (!(nla_type(params) & LN_SCALAR_ATTR_LIST)) {
6331 GENL_SET_ERR_MSG(info, "invalid configuration");
6332 mutex_unlock(&the_lnet.ln_api_mutex);
6336 nla_for_each_nested(attr, params, rem) {
6337 bool parse_peer_nis = false;
6338 struct nlattr *pnid_prop;
6341 if (nla_type(attr) != LN_SCALAR_ATTR_LIST)
6344 pnid = LNET_ANY_NID;
6345 nla_for_each_nested(pnid_prop, attr, rem2) {
6348 if (nla_type(pnid_prop) != LN_SCALAR_ATTR_VALUE)
6351 if (nla_strcmp(pnid_prop, "primary nid") == 0) {
6352 char nidstr[LNET_NIDSTR_SIZE];
6354 pnid_prop = nla_next(pnid_prop, &rem2);
6355 if (nla_type(pnid_prop) !=
6356 LN_SCALAR_ATTR_VALUE) {
6357 GENL_SET_ERR_MSG(info,
6358 "invalid primary NID type");
6359 GOTO(report_err, rc = -EINVAL);
6362 rc = nla_strscpy(nidstr, pnid_prop,
6365 GENL_SET_ERR_MSG(info,
6366 "failed to get primary NID");
6367 GOTO(report_err, rc);
6370 rc = libcfs_strnid(&pnid, strim(nidstr));
6372 GENL_SET_ERR_MSG(info,
6373 "unsupported primary NID");
6374 GOTO(report_err, rc);
6377 /* we must create primary NID for peer ni
6380 if (info->nlhdr->nlmsg_flags & NLM_F_CREATE) {
6383 lock_prim = info->nlhdr->nlmsg_flags & NLM_F_EXCL;
6384 rc = lnet_user_add_peer_ni(&pnid,
6388 GENL_SET_ERR_MSG(info,
6389 "failed to add primary peer");
6390 GOTO(report_err, rc);
6393 } else if (nla_strcmp(pnid_prop, "Multi-Rail") == 0) {
6394 pnid_prop = nla_next(pnid_prop, &rem2);
6395 if (nla_type(pnid_prop) !=
6396 LN_SCALAR_ATTR_INT_VALUE) {
6397 GENL_SET_ERR_MSG(info,
6398 "invalid MR flag param");
6399 GOTO(report_err, rc = -EINVAL);
6402 if (nla_get_s64(pnid_prop) == 0)
6404 } else if (nla_strcmp(pnid_prop, "peer state") == 0) {
6405 struct lnet_peer_ni *lpni;
6406 struct lnet_peer *lp;
6408 pnid_prop = nla_next(pnid_prop, &rem2);
6409 if (nla_type(pnid_prop) !=
6410 LN_SCALAR_ATTR_INT_VALUE) {
6411 GENL_SET_ERR_MSG(info,
6412 "invalid peer state param");
6413 GOTO(report_err, rc = -EINVAL);
6416 lpni = lnet_peer_ni_find_locked(&pnid);
6418 GENL_SET_ERR_MSG(info,
6419 "invalid peer state param");
6420 GOTO(report_err, rc = -ENOENT);
6422 lnet_peer_ni_decref_locked(lpni);
6423 lp = lpni->lpni_peer_net->lpn_peer;
6424 lp->lp_state = nla_get_s64(pnid_prop);
6425 } else if (nla_strcmp(pnid_prop, "peer ni") == 0) {
6426 struct nlattr *rlist;
6429 if (LNET_NID_IS_ANY(&pnid)) {
6430 GENL_SET_ERR_MSG(info,
6431 "missing required primary NID");
6432 GOTO(report_err, rc);
6435 pnid_prop = nla_next(pnid_prop, &rem2);
6436 if (nla_type(pnid_prop) !=
6437 LN_SCALAR_ATTR_LIST) {
6438 GENL_SET_ERR_MSG(info,
6439 "invalid NIDs list");
6440 GOTO(report_err, rc = -EINVAL);
6443 parse_peer_nis = true;
6444 nla_for_each_nested(rlist, pnid_prop, rem3) {
6445 rc = lnet_parse_peer_nis(rlist, info,
6449 GOTO(report_err, rc);
6454 /* If we have remote peer ni's we already add /del peers */
6458 if (LNET_NID_IS_ANY(&pnid)) {
6459 GENL_SET_ERR_MSG(info, "missing primary NID");
6460 GOTO(report_err, rc);
6463 if (!(info->nlhdr->nlmsg_flags & NLM_F_CREATE)) {
6464 bool force = info->nlhdr->nlmsg_flags & NLM_F_EXCL;
6466 rc = lnet_del_peer_ni(&pnid, &LNET_ANY_NID,
6469 GENL_SET_ERR_MSG(info,
6470 "failed to del primary peer");
6471 GOTO(report_err, rc);
6476 /* If we failed on creation and encounter a latter error then
6477 * delete the primary nid.
6479 if (rc < 0 && info->nlhdr->nlmsg_flags & NLM_F_CREATE &&
6480 !LNET_NID_IS_ANY(&pnid))
6481 lnet_del_peer_ni(&pnid, &LNET_ANY_NID,
6482 info->nlhdr->nlmsg_flags & NLM_F_EXCL);
6483 mutex_unlock(&the_lnet.ln_api_mutex);
6488 /** LNet route handling */
6490 /* We can't use struct lnet_ioctl_config_data since it lacks
6491 * support for large NIDS
6493 struct lnet_route_properties {
6494 struct lnet_nid lrp_gateway;
6499 u32 lrp_sensitivity;
6502 struct lnet_genl_route_list {
6503 unsigned int lgrl_index;
6504 unsigned int lgrl_count;
6505 GENRADIX(struct lnet_route_properties) lgrl_list;
6508 static inline struct lnet_genl_route_list *
6509 lnet_route_dump_ctx(struct netlink_callback *cb)
6511 return (struct lnet_genl_route_list *)cb->args[0];
6514 static int lnet_route_show_done(struct netlink_callback *cb)
6516 struct lnet_genl_route_list *rlist = lnet_route_dump_ctx(cb);
6519 genradix_free(&rlist->lgrl_list);
6520 CFS_FREE_PTR(rlist);
6527 static int lnet_scan_route(struct lnet_genl_route_list *rlist,
6528 struct lnet_route_properties *settings)
6530 struct lnet_remotenet *rnet;
6531 struct list_head *rn_list;
6532 struct lnet_route *route;
6535 cpt = lnet_net_lock_current();
6537 for (i = 0; i < LNET_REMOTE_NETS_HASH_SIZE; i++) {
6538 rn_list = &the_lnet.ln_remote_nets_hash[i];
6539 list_for_each_entry(rnet, rn_list, lrn_list) {
6540 if (settings->lrp_net != LNET_NET_ANY &&
6541 settings->lrp_net != rnet->lrn_net)
6544 list_for_each_entry(route, &rnet->lrn_routes,
6546 struct lnet_route_properties *prop;
6548 if (!LNET_NID_IS_ANY(&settings->lrp_gateway) &&
6549 !nid_same(&settings->lrp_gateway,
6554 if (settings->lrp_hop != -1 &&
6555 settings->lrp_hop != route->lr_hops)
6558 if (settings->lrp_priority != -1 &&
6559 settings->lrp_priority != route->lr_priority)
6562 if (settings->lrp_sensitivity != -1 &&
6563 settings->lrp_sensitivity !=
6564 route->lr_gateway->lp_health_sensitivity)
6567 prop = genradix_ptr_alloc(&rlist->lgrl_list,
6568 rlist->lgrl_count++,
6571 GOTO(failed_alloc, rc = -ENOMEM);
6573 prop->lrp_net = rnet->lrn_net;
6574 prop->lrp_gateway = route->lr_nid;
6575 prop->lrp_hop = route->lr_hops;
6576 prop->lrp_priority = route->lr_priority;
6577 prop->lrp_sensitivity =
6578 route->lr_gateway->lp_health_sensitivity;
6579 if (lnet_is_route_alive(route))
6580 prop->lrp_flags |= LNET_RT_ALIVE;
6582 prop->lrp_flags &= ~LNET_RT_ALIVE;
6583 if (route->lr_single_hop)
6584 prop->lrp_flags &= ~LNET_RT_MULTI_HOP;
6586 prop->lrp_flags |= LNET_RT_MULTI_HOP;
6592 lnet_net_unlock(cpt);
6596 /* LNet route ->start() handler for GET requests */
6597 static int lnet_route_show_start(struct netlink_callback *cb)
6599 struct genlmsghdr *gnlh = nlmsg_data(cb->nlh);
6600 #ifdef HAVE_NL_PARSE_WITH_EXT_ACK
6601 struct netlink_ext_ack *extack = NULL;
6603 struct lnet_genl_route_list *rlist;
6604 int msg_len = genlmsg_len(gnlh);
6607 #ifdef HAVE_NL_DUMP_WITH_EXT_ACK
6608 extack = cb->extack;
6610 if (the_lnet.ln_refcount == 0 ||
6611 the_lnet.ln_state != LNET_STATE_RUNNING) {
6612 NL_SET_ERR_MSG(extack, "Network is down");
6616 CFS_ALLOC_PTR(rlist);
6618 NL_SET_ERR_MSG(extack, "No memory for route list");
6622 genradix_init(&rlist->lgrl_list);
6623 rlist->lgrl_count = 0;
6624 rlist->lgrl_index = 0;
6625 cb->args[0] = (long)rlist;
6627 mutex_lock(&the_lnet.ln_api_mutex);
6629 struct lnet_route_properties tmp = {
6630 .lrp_gateway = LNET_ANY_NID,
6631 .lrp_net = LNET_NET_ANY,
6634 .lrp_sensitivity = -1,
6637 rc = lnet_scan_route(rlist, &tmp);
6639 NL_SET_ERR_MSG(extack,
6640 "failed to allocate router data");
6641 GOTO(report_err, rc);
6644 struct nlattr *params = genlmsg_data(gnlh);
6645 struct nlattr *attr;
6648 nla_for_each_nested(attr, params, rem) {
6649 struct lnet_route_properties tmp = {
6650 .lrp_gateway = LNET_ANY_NID,
6651 .lrp_net = LNET_NET_ANY,
6654 .lrp_sensitivity = -1,
6656 struct nlattr *route;
6659 if (nla_type(attr) != LN_SCALAR_ATTR_LIST)
6662 nla_for_each_nested(route, attr, rem2) {
6663 if (nla_type(route) != LN_SCALAR_ATTR_VALUE)
6666 if (nla_strcmp(route, "net") == 0) {
6667 char nw[LNET_NIDSTR_SIZE];
6669 route = nla_next(route, &rem2);
6670 if (nla_type(route) !=
6671 LN_SCALAR_ATTR_VALUE) {
6672 NL_SET_ERR_MSG(extack,
6673 "invalid net param");
6674 GOTO(report_err, rc = -EINVAL);
6677 rc = nla_strscpy(nw, route, sizeof(nw));
6679 NL_SET_ERR_MSG(extack,
6680 "failed to get route param");
6681 GOTO(report_err, rc);
6684 tmp.lrp_net = libcfs_str2net(strim(nw));
6685 } else if (nla_strcmp(route, "gateway") == 0) {
6686 char gw[LNET_NIDSTR_SIZE];
6688 route = nla_next(route, &rem2);
6689 if (nla_type(route) !=
6690 LN_SCALAR_ATTR_VALUE) {
6691 NL_SET_ERR_MSG(extack,
6692 "invalid gateway param");
6693 GOTO(report_err, rc = -EINVAL);
6696 rc = nla_strscpy(gw, route, sizeof(gw));
6698 NL_SET_ERR_MSG(extack,
6699 "failed to get route param");
6700 GOTO(report_err, rc);
6703 rc = libcfs_strnid(&tmp.lrp_gateway, strim(gw));
6705 NL_SET_ERR_MSG(extack,
6706 "cannot parse gateway");
6707 GOTO(report_err, rc = -ENODEV);
6710 } else if (nla_strcmp(route, "hop") == 0) {
6711 route = nla_next(route, &rem2);
6712 if (nla_type(route) !=
6713 LN_SCALAR_ATTR_INT_VALUE) {
6714 NL_SET_ERR_MSG(extack,
6715 "invalid hop param");
6716 GOTO(report_err, rc = -EINVAL);
6719 tmp.lrp_hop = nla_get_s64(route);
6720 if (tmp.lrp_hop != -1)
6721 clamp_t(s32, tmp.lrp_hop, 1, 127);
6722 } else if (nla_strcmp(route, "priority") == 0) {
6723 route = nla_next(route, &rem2);
6724 if (nla_type(route) !=
6725 LN_SCALAR_ATTR_INT_VALUE) {
6726 NL_SET_ERR_MSG(extack,
6727 "invalid priority param");
6728 GOTO(report_err, rc = -EINVAL);
6731 tmp.lrp_priority = nla_get_s64(route);
6735 rc = lnet_scan_route(rlist, &tmp);
6737 NL_SET_ERR_MSG(extack,
6738 "failed to allocate router data");
6739 GOTO(report_err, rc);
6744 mutex_unlock(&the_lnet.ln_api_mutex);
6747 lnet_route_show_done(cb);
6752 static const struct ln_key_list route_props_list = {
6753 .lkl_maxattr = LNET_ROUTE_ATTR_MAX,
6755 [LNET_ROUTE_ATTR_HDR] = {
6756 .lkp_value = "route",
6757 .lkp_key_format = LNKF_SEQUENCE | LNKF_MAPPING,
6758 .lkp_data_type = NLA_NUL_STRING,
6760 [LNET_ROUTE_ATTR_NET] = {
6762 .lkp_data_type = NLA_STRING
6764 [LNET_ROUTE_ATTR_GATEWAY] = {
6765 .lkp_value = "gateway",
6766 .lkp_data_type = NLA_STRING
6768 [LNET_ROUTE_ATTR_HOP] = {
6770 .lkp_data_type = NLA_S32
6772 [LNET_ROUTE_ATTR_PRIORITY] = {
6773 .lkp_value = "priority",
6774 .lkp_data_type = NLA_U32
6776 [LNET_ROUTE_ATTR_HEALTH_SENSITIVITY] = {
6777 .lkp_value = "health_sensitivity",
6778 .lkp_data_type = NLA_U32
6780 [LNET_ROUTE_ATTR_STATE] = {
6781 .lkp_value = "state",
6782 .lkp_data_type = NLA_STRING,
6784 [LNET_ROUTE_ATTR_TYPE] = {
6785 .lkp_value = "type",
6786 .lkp_data_type = NLA_STRING,
6792 static int lnet_route_show_dump(struct sk_buff *msg,
6793 struct netlink_callback *cb)
6795 struct lnet_genl_route_list *rlist = lnet_route_dump_ctx(cb);
6796 struct genlmsghdr *gnlh = nlmsg_data(cb->nlh);
6797 #ifdef HAVE_NL_PARSE_WITH_EXT_ACK
6798 struct netlink_ext_ack *extack = NULL;
6800 int portid = NETLINK_CB(cb->skb).portid;
6801 int seq = cb->nlh->nlmsg_seq;
6802 int idx = rlist->lgrl_index;
6805 #ifdef HAVE_NL_DUMP_WITH_EXT_ACK
6806 extack = cb->extack;
6808 if (!rlist->lgrl_count) {
6809 NL_SET_ERR_MSG(extack, "No routes found");
6810 GOTO(send_error, rc = -ENOENT);
6814 const struct ln_key_list *all[] = {
6815 &route_props_list, NULL
6818 rc = lnet_genl_send_scalar_list(msg, portid, seq,
6820 NLM_F_CREATE | NLM_F_MULTI,
6821 LNET_CMD_ROUTES, all);
6823 NL_SET_ERR_MSG(extack, "failed to send key table");
6824 GOTO(send_error, rc);
6828 /* If not routes found send an empty message and not an error */
6829 if (!rlist->lgrl_count) {
6832 hdr = genlmsg_put(msg, portid, seq, &lnet_family,
6833 NLM_F_MULTI, LNET_CMD_ROUTES);
6835 NL_SET_ERR_MSG(extack, "failed to send values");
6836 genlmsg_cancel(msg, hdr);
6837 GOTO(send_error, rc = -EMSGSIZE);
6839 genlmsg_end(msg, hdr);
6844 while (idx < rlist->lgrl_count) {
6845 struct lnet_route_properties *prop;
6848 prop = genradix_ptr(&rlist->lgrl_list, idx++);
6850 hdr = genlmsg_put(msg, portid, seq, &lnet_family,
6851 NLM_F_MULTI, LNET_CMD_ROUTES);
6853 NL_SET_ERR_MSG(extack, "failed to send values");
6854 genlmsg_cancel(msg, hdr);
6855 GOTO(send_error, rc = -EMSGSIZE);
6859 nla_put_string(msg, LNET_ROUTE_ATTR_HDR, "");
6861 nla_put_string(msg, LNET_ROUTE_ATTR_NET,
6862 libcfs_net2str(prop->lrp_net));
6863 nla_put_string(msg, LNET_ROUTE_ATTR_GATEWAY,
6864 libcfs_nidstr(&prop->lrp_gateway));
6865 if (gnlh->version) {
6866 nla_put_s32(msg, LNET_ROUTE_ATTR_HOP, prop->lrp_hop);
6867 nla_put_u32(msg, LNET_ROUTE_ATTR_PRIORITY, prop->lrp_priority);
6868 nla_put_u32(msg, LNET_ROUTE_ATTR_HEALTH_SENSITIVITY,
6869 prop->lrp_sensitivity);
6871 nla_put_string(msg, LNET_ROUTE_ATTR_STATE,
6872 prop->lrp_flags & LNET_RT_ALIVE ?
6874 nla_put_string(msg, LNET_ROUTE_ATTR_TYPE,
6875 prop->lrp_flags & LNET_RT_MULTI_HOP ?
6876 "multi-hop" : "single-hop");
6878 genlmsg_end(msg, hdr);
6880 rlist->lgrl_index = idx;
6882 return lnet_nl_send_error(cb->skb, portid, seq, rc);
6885 #ifndef HAVE_NETLINK_CALLBACK_START
6886 static int lnet_old_route_show_dump(struct sk_buff *msg,
6887 struct netlink_callback *cb)
6890 int rc = lnet_route_show_start(cb);
6896 return lnet_route_show_dump(msg, cb);
6898 #endif /* !HAVE_NETLINK_CALLBACK_START */
6900 /** LNet peer handling */
6901 struct lnet_genl_processid_list {
6902 unsigned int lgpl_index;
6903 unsigned int lgpl_count;
6904 GENRADIX(struct lnet_processid) lgpl_list;
6907 static inline struct lnet_genl_processid_list *
6908 lnet_peer_dump_ctx(struct netlink_callback *cb)
6910 return (struct lnet_genl_processid_list *)cb->args[0];
6913 static int lnet_peer_ni_show_done(struct netlink_callback *cb)
6915 struct lnet_genl_processid_list *plist = lnet_peer_dump_ctx(cb);
6918 genradix_free(&plist->lgpl_list);
6919 CFS_FREE_PTR(plist);
6926 /* LNet peer ->start() handler for GET requests */
6927 static int lnet_peer_ni_show_start(struct netlink_callback *cb)
6929 struct genlmsghdr *gnlh = nlmsg_data(cb->nlh);
6930 #ifdef HAVE_NL_PARSE_WITH_EXT_ACK
6931 struct netlink_ext_ack *extack = NULL;
6933 struct lnet_genl_processid_list *plist;
6934 int msg_len = genlmsg_len(gnlh);
6937 #ifdef HAVE_NL_DUMP_WITH_EXT_ACK
6938 extack = cb->extack;
6940 mutex_lock(&the_lnet.ln_api_mutex);
6941 if (the_lnet.ln_state != LNET_STATE_RUNNING) {
6942 NL_SET_ERR_MSG(extack, "Network is down");
6943 mutex_unlock(&the_lnet.ln_api_mutex);
6947 CFS_ALLOC_PTR(plist);
6949 NL_SET_ERR_MSG(extack, "No memory for peer list");
6950 mutex_unlock(&the_lnet.ln_api_mutex);
6954 genradix_init(&plist->lgpl_list);
6955 plist->lgpl_count = 0;
6956 plist->lgpl_index = 0;
6957 cb->args[0] = (long)plist;
6960 struct lnet_peer_table *ptable;
6963 cfs_percpt_for_each(ptable, cpt, the_lnet.ln_peer_tables) {
6964 struct lnet_peer *lp;
6966 list_for_each_entry(lp, &ptable->pt_peer_list, lp_peer_list) {
6967 struct lnet_processid *lpi;
6969 lpi = genradix_ptr_alloc(&plist->lgpl_list,
6970 plist->lgpl_count++,
6973 NL_SET_ERR_MSG(extack, "failed to allocate NID");
6974 GOTO(report_err, rc = -ENOMEM);
6977 lpi->pid = LNET_PID_LUSTRE;
6978 lpi->nid = lp->lp_primary_nid;
6982 struct nlattr *params = genlmsg_data(gnlh);
6983 struct nlattr *attr;
6986 nla_for_each_nested(attr, params, rem) {
6990 if (nla_type(attr) != LN_SCALAR_ATTR_LIST)
6993 nla_for_each_nested(nid, attr, rem2) {
6994 char addr[LNET_NIDSTR_SIZE];
6995 struct lnet_processid *id;
6997 if (nla_type(nid) != LN_SCALAR_ATTR_VALUE ||
6998 nla_strcmp(nid, "primary nid") != 0)
7001 nid = nla_next(nid, &rem2);
7002 if (nla_type(nid) != LN_SCALAR_ATTR_VALUE) {
7003 NL_SET_ERR_MSG(extack,
7004 "invalid primary nid param");
7005 GOTO(report_err, rc = -EINVAL);
7008 rc = nla_strscpy(addr, nid, sizeof(addr));
7010 NL_SET_ERR_MSG(extack,
7011 "failed to get primary nid param");
7012 GOTO(report_err, rc);
7015 id = genradix_ptr_alloc(&plist->lgpl_list,
7016 plist->lgpl_count++,
7019 NL_SET_ERR_MSG(extack, "failed to allocate NID");
7020 GOTO(report_err, rc = -ENOMEM);
7023 rc = libcfs_strid(id, strim(addr));
7025 NL_SET_ERR_MSG(extack, "invalid NID");
7026 GOTO(report_err, rc);
7033 mutex_unlock(&the_lnet.ln_api_mutex);
7036 lnet_peer_ni_show_done(cb);
7041 static const struct ln_key_list lnet_peer_ni_keys = {
7042 .lkl_maxattr = LNET_PEER_NI_ATTR_MAX,
7044 [LNET_PEER_NI_ATTR_HDR] = {
7045 .lkp_value = "peer",
7046 .lkp_key_format = LNKF_SEQUENCE | LNKF_MAPPING,
7047 .lkp_data_type = NLA_NUL_STRING,
7049 [LNET_PEER_NI_ATTR_PRIMARY_NID] = {
7050 .lkp_value = "primary nid",
7051 .lkp_data_type = NLA_STRING,
7053 [LNET_PEER_NI_ATTR_MULTIRAIL] = {
7054 .lkp_value = "Multi-Rail",
7055 .lkp_data_type = NLA_FLAG
7057 [LNET_PEER_NI_ATTR_STATE] = {
7058 .lkp_value = "peer state",
7059 .lkp_data_type = NLA_U32
7061 [LNET_PEER_NI_ATTR_PEER_NI_LIST] = {
7062 .lkp_value = "peer ni",
7063 .lkp_key_format = LNKF_SEQUENCE | LNKF_MAPPING,
7064 .lkp_data_type = NLA_NESTED,
7069 static const struct ln_key_list lnet_peer_ni_list = {
7070 .lkl_maxattr = LNET_PEER_NI_LIST_ATTR_MAX,
7072 [LNET_PEER_NI_LIST_ATTR_NID] = {
7074 .lkp_data_type = NLA_STRING,
7076 [LNET_PEER_NI_LIST_ATTR_UDSP_INFO] = {
7077 .lkp_value = "udsp info",
7078 .lkp_key_format = LNKF_MAPPING,
7079 .lkp_data_type = NLA_NESTED,
7081 [LNET_PEER_NI_LIST_ATTR_STATE] = {
7082 .lkp_value = "state",
7083 .lkp_data_type = NLA_STRING,
7085 [LNET_PEER_NI_LIST_ATTR_MAX_TX_CREDITS] = {
7086 .lkp_value = "max_ni_tx_credits",
7087 .lkp_data_type = NLA_U32,
7089 [LNET_PEER_NI_LIST_ATTR_CUR_TX_CREDITS] = {
7090 .lkp_value = "available_tx_credits",
7091 .lkp_data_type = NLA_U32,
7093 [LNET_PEER_NI_LIST_ATTR_MIN_TX_CREDITS] = {
7094 .lkp_value = "min_tx_credits",
7095 .lkp_data_type = NLA_U32,
7097 [LNET_PEER_NI_LIST_ATTR_QUEUE_BUF_COUNT] = {
7098 .lkp_value = "tx_q_num_of_buf",
7099 .lkp_data_type = NLA_U32,
7101 [LNET_PEER_NI_LIST_ATTR_CUR_RTR_CREDITS] = {
7102 .lkp_value = "available_rtr_credits",
7103 .lkp_data_type = NLA_U32,
7105 [LNET_PEER_NI_LIST_ATTR_MIN_RTR_CREDITS] = {
7106 .lkp_value = "min_rtr_credits",
7107 .lkp_data_type = NLA_U32,
7109 [LNET_PEER_NI_LIST_ATTR_REFCOUNT] = {
7110 .lkp_value = "refcount",
7111 .lkp_data_type = NLA_U32,
7113 [LNET_PEER_NI_LIST_ATTR_STATS_COUNT] = {
7114 .lkp_value = "statistics",
7115 .lkp_key_format = LNKF_MAPPING,
7116 .lkp_data_type = NLA_NESTED
7118 [LNET_PEER_NI_LIST_ATTR_SENT_STATS] = {
7119 .lkp_value = "sent_stats",
7120 .lkp_key_format = LNKF_MAPPING,
7121 .lkp_data_type = NLA_NESTED
7123 [LNET_PEER_NI_LIST_ATTR_RECV_STATS] = {
7124 .lkp_value = "received_stats",
7125 .lkp_key_format = LNKF_MAPPING,
7126 .lkp_data_type = NLA_NESTED
7128 [LNET_PEER_NI_LIST_ATTR_DROP_STATS] = {
7129 .lkp_value = "dropped_stats",
7130 .lkp_key_format = LNKF_MAPPING,
7131 .lkp_data_type = NLA_NESTED
7133 [LNET_PEER_NI_LIST_ATTR_HEALTH_STATS] = {
7134 .lkp_value = "health stats",
7135 .lkp_key_format = LNKF_MAPPING,
7136 .lkp_data_type = NLA_NESTED
7141 static const struct ln_key_list lnet_peer_ni_list_stats_count = {
7142 .lkl_maxattr = LNET_PEER_NI_LIST_STATS_COUNT_ATTR_MAX,
7144 [LNET_PEER_NI_LIST_STATS_COUNT_ATTR_SEND_COUNT] = {
7145 .lkp_value = "send_count",
7146 .lkp_data_type = NLA_U32,
7148 [LNET_PEER_NI_LIST_STATS_COUNT_ATTR_RECV_COUNT] = {
7149 .lkp_value = "recv_count",
7150 .lkp_data_type = NLA_U32,
7152 [LNET_PEER_NI_LIST_STATS_COUNT_ATTR_DROP_COUNT] = {
7153 .lkp_value = "drop_count",
7154 .lkp_data_type = NLA_U32,
7159 static const struct ln_key_list lnet_peer_ni_list_stats = {
7160 .lkl_maxattr = LNET_PEER_NI_LIST_STATS_ATTR_MAX,
7162 [LNET_PEER_NI_LIST_STATS_ATTR_PUT] = {
7164 .lkp_data_type = NLA_U32,
7166 [LNET_PEER_NI_LIST_STATS_ATTR_GET] = {
7168 .lkp_data_type = NLA_U32,
7170 [LNET_PEER_NI_LIST_STATS_ATTR_REPLY] = {
7171 .lkp_value = "reply",
7172 .lkp_data_type = NLA_U32,
7174 [LNET_PEER_NI_LIST_STATS_ATTR_ACK] = {
7176 .lkp_data_type = NLA_U32,
7178 [LNET_PEER_NI_LIST_STATS_ATTR_HELLO] = {
7179 .lkp_value = "hello",
7180 .lkp_data_type = NLA_U32,
7185 static const struct ln_key_list lnet_peer_ni_list_health = {
7186 .lkl_maxattr = LNET_PEER_NI_LIST_HEALTH_STATS_ATTR_MAX,
7188 [LNET_PEER_NI_LIST_HEALTH_STATS_ATTR_VALUE] = {
7189 .lkp_value = "health value",
7190 .lkp_data_type = NLA_S32,
7192 [LNET_PEER_NI_LIST_HEALTH_STATS_ATTR_DROPPED] = {
7193 .lkp_value = "dropped",
7194 .lkp_data_type = NLA_U32,
7196 [LNET_PEER_NI_LIST_HEALTH_STATS_ATTR_TIMEOUT] = {
7197 .lkp_value = "timeout",
7198 .lkp_data_type = NLA_U32,
7200 [LNET_PEER_NI_LIST_HEALTH_STATS_ATTR_ERROR] = {
7201 .lkp_value = "error",
7202 .lkp_data_type = NLA_U32,
7204 [LNET_PEER_NI_LIST_HEALTH_STATS_ATTR_NETWORK_TIMEOUT] = {
7205 .lkp_value = "network timeout",
7206 .lkp_data_type = NLA_U32,
7208 [LNET_PEER_NI_LIST_HEALTH_STATS_ATTR_PING_COUNT] = {
7209 .lkp_value = "ping_count",
7210 .lkp_data_type = NLA_U32,
7212 [LNET_PEER_NI_LIST_HEALTH_STATS_ATTR_NEXT_PING] = {
7213 .lkp_value = "next_ping",
7214 .lkp_data_type = NLA_S64,
7219 static int lnet_peer_ni_show_dump(struct sk_buff *msg,
7220 struct netlink_callback *cb)
7222 struct lnet_genl_processid_list *plist = lnet_peer_dump_ctx(cb);
7223 struct genlmsghdr *gnlh = nlmsg_data(cb->nlh);
7224 #ifdef HAVE_NL_PARSE_WITH_EXT_ACK
7225 struct netlink_ext_ack *extack = NULL;
7227 int portid = NETLINK_CB(cb->skb).portid;
7228 int seq = cb->nlh->nlmsg_seq;
7229 int idx = plist->lgpl_index;
7232 #ifdef HAVE_NL_DUMP_WITH_EXT_ACK
7233 extack = cb->extack;
7235 if (!plist->lgpl_count) {
7236 NL_SET_ERR_MSG(extack, "No peers found");
7237 GOTO(send_error, rc = -ENOENT);
7241 const struct ln_key_list *all[] = {
7242 &lnet_peer_ni_keys, &lnet_peer_ni_list,
7243 &udsp_info_list, &udsp_info_pref_nids_list,
7244 &udsp_info_pref_nids_list,
7245 &lnet_peer_ni_list_stats_count,
7246 &lnet_peer_ni_list_stats, /* send_stats */
7247 &lnet_peer_ni_list_stats, /* recv_stats */
7248 &lnet_peer_ni_list_stats, /* drop stats */
7249 &lnet_peer_ni_list_health,
7253 rc = lnet_genl_send_scalar_list(msg, portid, seq,
7255 NLM_F_CREATE | NLM_F_MULTI,
7256 LNET_CMD_PEERS, all);
7258 NL_SET_ERR_MSG(extack, "failed to send key table");
7259 GOTO(send_error, rc);
7263 mutex_lock(&the_lnet.ln_api_mutex);
7264 if (the_lnet.ln_state != LNET_STATE_RUNNING) {
7265 NL_SET_ERR_MSG(extack, "Network is down");
7266 GOTO(unlock_api_mutex, rc = -ENETDOWN);
7269 while (idx < plist->lgpl_count) {
7270 struct lnet_processid *id;
7271 struct lnet_peer_ni *lpni;
7272 struct nlattr *nid_list;
7273 struct lnet_peer *lp;
7277 id = genradix_ptr(&plist->lgpl_list, idx++);
7278 if (nid_is_lo0(&id->nid))
7281 hdr = genlmsg_put(msg, portid, seq, &lnet_family,
7282 NLM_F_MULTI, LNET_CMD_PEERS);
7284 NL_SET_ERR_MSG(extack, "failed to send values");
7285 genlmsg_cancel(msg, hdr);
7286 GOTO(unlock_api_mutex, rc = -EMSGSIZE);
7289 lp = lnet_find_peer(&id->nid);
7291 NL_SET_ERR_MSG(extack, "cannot find peer");
7292 GOTO(unlock_api_mutex, rc = -ENOENT);
7296 nla_put_string(msg, LNET_PEER_NI_ATTR_HDR, "");
7298 nla_put_string(msg, LNET_PEER_NI_ATTR_PRIMARY_NID,
7299 libcfs_nidstr(&lp->lp_primary_nid));
7300 if (lnet_peer_is_multi_rail(lp))
7301 nla_put_flag(msg, LNET_PEER_NI_ATTR_MULTIRAIL);
7303 if (gnlh->version >= 3)
7304 nla_put_u32(msg, LNET_PEER_NI_ATTR_STATE, lp->lp_state);
7306 nid_list = nla_nest_start(msg, LNET_PEER_NI_ATTR_PEER_NI_LIST);
7307 while ((lpni = lnet_get_next_peer_ni_locked(lp, NULL, lpni)) != NULL) {
7308 struct nlattr *peer_nid = nla_nest_start(msg, count++);
7310 nla_put_string(msg, LNET_PEER_NI_LIST_ATTR_NID,
7311 libcfs_nidstr(&lpni->lpni_nid));
7313 if (gnlh->version >= 4) {
7314 rc = lnet_udsp_info_send(msg,
7315 LNET_PEER_NI_LIST_ATTR_UDSP_INFO,
7316 &lpni->lpni_nid, true);
7318 lnet_peer_decref_locked(lp);
7319 NL_SET_ERR_MSG(extack,
7320 "failed to get UDSP info");
7321 GOTO(unlock_api_mutex, rc);
7325 if (lnet_isrouter(lpni) ||
7326 lnet_peer_aliveness_enabled(lpni)) {
7327 nla_put_string(msg, LNET_PEER_NI_LIST_ATTR_STATE,
7328 lnet_is_peer_ni_alive(lpni) ?
7331 nla_put_string(msg, LNET_PEER_NI_LIST_ATTR_STATE,
7335 if (gnlh->version) {
7336 struct lnet_ioctl_element_msg_stats lpni_msg_stats;
7337 struct nlattr *send_stats_list, *send_stats;
7338 struct nlattr *recv_stats_list, *recv_stats;
7339 struct nlattr *drop_stats_list, *drop_stats;
7340 struct nlattr *health_list, *health_stats;
7341 struct lnet_ioctl_element_stats stats;
7342 struct nlattr *stats_attr, *ni_stats;
7345 LNET_PEER_NI_LIST_ATTR_MAX_TX_CREDITS,
7347 lpni->lpni_net->net_tunables.lct_peer_tx_credits : 0);
7349 LNET_PEER_NI_LIST_ATTR_CUR_TX_CREDITS,
7350 lpni->lpni_txcredits);
7352 LNET_PEER_NI_LIST_ATTR_MIN_TX_CREDITS,
7353 lpni->lpni_mintxcredits);
7355 LNET_PEER_NI_LIST_ATTR_QUEUE_BUF_COUNT,
7358 LNET_PEER_NI_LIST_ATTR_CUR_RTR_CREDITS,
7359 lpni->lpni_rtrcredits);
7361 LNET_PEER_NI_LIST_ATTR_MIN_RTR_CREDITS,
7362 lpni->lpni_minrtrcredits);
7364 LNET_PEER_NI_LIST_ATTR_REFCOUNT,
7365 kref_read(&lpni->lpni_kref));
7367 memset(&stats, 0, sizeof(stats));
7368 stats.iel_send_count = lnet_sum_stats(&lpni->lpni_stats,
7369 LNET_STATS_TYPE_SEND);
7370 stats.iel_recv_count = lnet_sum_stats(&lpni->lpni_stats,
7371 LNET_STATS_TYPE_RECV);
7372 stats.iel_drop_count = lnet_sum_stats(&lpni->lpni_stats,
7373 LNET_STATS_TYPE_DROP);
7375 stats_attr = nla_nest_start(msg,
7376 LNET_PEER_NI_LIST_ATTR_STATS_COUNT);
7377 ni_stats = nla_nest_start(msg, 0);
7379 LNET_PEER_NI_LIST_STATS_COUNT_ATTR_SEND_COUNT,
7380 stats.iel_send_count);
7382 LNET_PEER_NI_LIST_STATS_COUNT_ATTR_RECV_COUNT,
7383 stats.iel_recv_count);
7385 LNET_PEER_NI_LIST_STATS_COUNT_ATTR_DROP_COUNT,
7386 stats.iel_drop_count);
7387 nla_nest_end(msg, ni_stats);
7388 nla_nest_end(msg, stats_attr);
7390 if (gnlh->version < 2)
7391 goto skip_msg_stats;
7393 lnet_usr_translate_stats(&lpni_msg_stats, &lpni->lpni_stats);
7395 send_stats_list = nla_nest_start(msg,
7396 LNET_PEER_NI_LIST_ATTR_SENT_STATS);
7397 send_stats = nla_nest_start(msg, 0);
7399 LNET_PEER_NI_LIST_STATS_ATTR_PUT,
7400 lpni_msg_stats.im_send_stats.ico_put_count);
7402 LNET_PEER_NI_LIST_STATS_ATTR_GET,
7403 lpni_msg_stats.im_send_stats.ico_get_count);
7405 LNET_PEER_NI_LIST_STATS_ATTR_REPLY,
7406 lpni_msg_stats.im_send_stats.ico_reply_count);
7408 LNET_PEER_NI_LIST_STATS_ATTR_ACK,
7409 lpni_msg_stats.im_send_stats.ico_ack_count);
7411 LNET_PEER_NI_LIST_STATS_ATTR_HELLO,
7412 lpni_msg_stats.im_send_stats.ico_hello_count);
7413 nla_nest_end(msg, send_stats);
7414 nla_nest_end(msg, send_stats_list);
7416 recv_stats_list = nla_nest_start(msg,
7417 LNET_PEER_NI_LIST_ATTR_RECV_STATS);
7418 recv_stats = nla_nest_start(msg, 0);
7420 LNET_PEER_NI_LIST_STATS_ATTR_PUT,
7421 lpni_msg_stats.im_recv_stats.ico_put_count);
7423 LNET_PEER_NI_LIST_STATS_ATTR_GET,
7424 lpni_msg_stats.im_recv_stats.ico_get_count);
7426 LNET_PEER_NI_LIST_STATS_ATTR_REPLY,
7427 lpni_msg_stats.im_recv_stats.ico_reply_count);
7429 LNET_PEER_NI_LIST_STATS_ATTR_ACK,
7430 lpni_msg_stats.im_recv_stats.ico_ack_count);
7432 LNET_PEER_NI_LIST_STATS_ATTR_HELLO,
7433 lpni_msg_stats.im_recv_stats.ico_hello_count);
7434 nla_nest_end(msg, recv_stats);
7435 nla_nest_end(msg, recv_stats_list);
7437 drop_stats_list = nla_nest_start(msg,
7438 LNET_PEER_NI_LIST_ATTR_DROP_STATS);
7439 drop_stats = nla_nest_start(msg, 0);
7441 LNET_PEER_NI_LIST_STATS_ATTR_PUT,
7442 lpni_msg_stats.im_drop_stats.ico_put_count);
7444 LNET_PEER_NI_LIST_STATS_ATTR_GET,
7445 lpni_msg_stats.im_drop_stats.ico_get_count);
7447 LNET_PEER_NI_LIST_STATS_ATTR_REPLY,
7448 lpni_msg_stats.im_drop_stats.ico_reply_count);
7450 LNET_PEER_NI_LIST_STATS_ATTR_ACK,
7451 lpni_msg_stats.im_drop_stats.ico_ack_count);
7453 LNET_PEER_NI_LIST_STATS_ATTR_HELLO,
7454 lpni_msg_stats.im_drop_stats.ico_hello_count);
7455 nla_nest_end(msg, drop_stats);
7456 nla_nest_end(msg, drop_stats_list);
7458 health_list = nla_nest_start(msg,
7459 LNET_PEER_NI_LIST_ATTR_HEALTH_STATS);
7460 health_stats = nla_nest_start(msg, 0);
7462 LNET_PEER_NI_LIST_HEALTH_STATS_ATTR_VALUE,
7463 atomic_read(&lpni->lpni_healthv));
7465 LNET_PEER_NI_LIST_HEALTH_STATS_ATTR_DROPPED,
7466 atomic_read(&lpni->lpni_hstats.hlt_remote_dropped));
7468 LNET_PEER_NI_LIST_HEALTH_STATS_ATTR_TIMEOUT,
7469 atomic_read(&lpni->lpni_hstats.hlt_remote_timeout));
7471 LNET_PEER_NI_LIST_HEALTH_STATS_ATTR_ERROR,
7472 atomic_read(&lpni->lpni_hstats.hlt_remote_error));
7474 LNET_PEER_NI_LIST_HEALTH_STATS_ATTR_NETWORK_TIMEOUT,
7475 atomic_read(&lpni->lpni_hstats.hlt_network_timeout));
7477 LNET_PEER_NI_LIST_HEALTH_STATS_ATTR_PING_COUNT,
7478 lpni->lpni_ping_count);
7480 LNET_PEER_NI_LIST_HEALTH_STATS_ATTR_NEXT_PING,
7481 lpni->lpni_next_ping,
7482 LNET_PEER_NI_LIST_HEALTH_STATS_ATTR_PAD);
7483 nla_nest_end(msg, health_stats);
7484 nla_nest_end(msg, health_list);
7487 nla_nest_end(msg, peer_nid);
7489 nla_nest_end(msg, nid_list);
7491 genlmsg_end(msg, hdr);
7492 lnet_peer_decref_locked(lp);
7494 plist->lgpl_index = idx;
7496 mutex_unlock(&the_lnet.ln_api_mutex);
7498 return lnet_nl_send_error(cb->skb, portid, seq, rc);
7501 #ifndef HAVE_NETLINK_CALLBACK_START
7502 static int lnet_old_peer_ni_show_dump(struct sk_buff *msg,
7503 struct netlink_callback *cb)
7506 int rc = lnet_peer_ni_show_start(cb);
7512 return lnet_peer_ni_show_dump(msg, cb);
7516 static int lnet_route_cmd(struct sk_buff *skb, struct genl_info *info)
7518 struct nlmsghdr *nlh = nlmsg_hdr(skb);
7519 struct genlmsghdr *gnlh = nlmsg_data(nlh);
7520 struct nlattr *params = genlmsg_data(gnlh);
7521 int msg_len, rem, rc = 0;
7522 struct nlattr *attr;
7524 mutex_lock(&the_lnet.ln_api_mutex);
7525 if (the_lnet.ln_state != LNET_STATE_RUNNING) {
7526 GENL_SET_ERR_MSG(info, "Network is down");
7527 mutex_unlock(&the_lnet.ln_api_mutex);
7531 msg_len = genlmsg_len(gnlh);
7533 GENL_SET_ERR_MSG(info, "no configuration");
7534 mutex_unlock(&the_lnet.ln_api_mutex);
7538 if (!(nla_type(params) & LN_SCALAR_ATTR_LIST)) {
7539 GENL_SET_ERR_MSG(info, "invalid configuration");
7540 mutex_unlock(&the_lnet.ln_api_mutex);
7544 nla_for_each_nested(attr, params, rem) {
7545 u32 net_id = LNET_NET_ANY, hops = LNET_UNDEFINED_HOPS;
7546 u32 priority = 0, sensitivity = 1;
7547 struct lnet_nid gw_nid = LNET_ANY_NID;
7548 struct nlattr *route_prop;
7553 if (nla_type(attr) != LN_SCALAR_ATTR_LIST)
7556 nla_for_each_nested(route_prop, attr, rem2) {
7557 char tmp[LNET_NIDSTR_SIZE];
7561 if (nla_type(route_prop) != LN_SCALAR_ATTR_VALUE)
7564 if (nla_strcmp(route_prop, "net") == 0) {
7565 route_prop = nla_next(route_prop, &rem2);
7566 if (nla_type(route_prop) !=
7567 LN_SCALAR_ATTR_VALUE) {
7568 GENL_SET_ERR_MSG(info,
7569 "net is invalid key");
7570 GOTO(report_err, rc = -EINVAL);
7573 len = nla_strscpy(tmp, route_prop, sizeof(tmp));
7575 GENL_SET_ERR_MSG(info,
7576 "net key string is invalid");
7577 GOTO(report_err, rc = len);
7580 net_id = libcfs_str2net(tmp);
7582 GENL_SET_ERR_MSG(info,
7583 "cannot parse remote net");
7584 GOTO(report_err, rc = -ENODEV);
7587 if (LNET_NETTYP(net_id) == LOLND) {
7588 GENL_SET_ERR_MSG(info,
7589 "setting @lo not allowed");
7590 GOTO(report_err, rc = -EACCES);
7593 if (net_id == LNET_NET_ANY) {
7594 GENL_SET_ERR_MSG(info,
7595 "setting LNET_NET_ANY not allowed");
7596 GOTO(report_err, rc = -ENXIO);
7598 } else if (nla_strcmp(route_prop, "gateway") == 0) {
7599 route_prop = nla_next(route_prop, &rem2);
7600 if (nla_type(route_prop) !=
7601 LN_SCALAR_ATTR_VALUE) {
7602 GENL_SET_ERR_MSG(info,
7603 "gateway is invalid key");
7604 GOTO(report_err, rc = -EINVAL);
7607 len = nla_strscpy(tmp, route_prop, sizeof(tmp));
7609 GENL_SET_ERR_MSG(info,
7610 "gateway string is invalid");
7611 GOTO(report_err, rc = len);
7614 rc = libcfs_strnid(&gw_nid, strim(tmp));
7616 GENL_SET_ERR_MSG(info,
7617 "cannot parse gateway");
7618 GOTO(report_err, rc = -ENODEV);
7620 } else if (nla_strcmp(route_prop, "state") == 0) {
7621 route_prop = nla_next(route_prop, &rem2);
7622 if (nla_type(route_prop) !=
7623 LN_SCALAR_ATTR_VALUE) {
7624 GENL_SET_ERR_MSG(info,
7625 "state is invalid key");
7626 GOTO(report_err, rc = -EINVAL);
7629 if (nla_strcmp(route_prop, "down") == 0) {
7631 } else if (nla_strcmp(route_prop, "up") == 0) {
7634 GENL_SET_ERR_MSG(info,
7635 "status string bad value");
7636 GOTO(report_err, rc = -EINVAL);
7638 } else if (nla_strcmp(route_prop, "notify_time") == 0) {
7639 route_prop = nla_next(route_prop, &rem2);
7640 if (nla_type(route_prop) !=
7641 LN_SCALAR_ATTR_INT_VALUE) {
7642 GENL_SET_ERR_MSG(info,
7643 "notify_time is invalid key");
7644 GOTO(report_err, rc = -EINVAL);
7647 when = nla_get_s64(route_prop);
7648 if (ktime_get_real_seconds() < when) {
7649 GENL_SET_ERR_MSG(info,
7650 "notify_time is in the future");
7651 GOTO(report_err, rc = -EINVAL);
7653 } else if (nla_strcmp(route_prop, "hop") == 0) {
7654 route_prop = nla_next(route_prop, &rem2);
7655 if (nla_type(route_prop) !=
7656 LN_SCALAR_ATTR_INT_VALUE) {
7657 GENL_SET_ERR_MSG(info,
7658 "hop has invalid key");
7659 GOTO(report_err, rc = -EINVAL);
7662 hops = nla_get_s64(route_prop);
7663 if ((hops < 1 || hops > 255) && hops != -1) {
7664 GENL_SET_ERR_MSG(info,
7665 "invalid hop count must be between 1 and 255");
7666 GOTO(report_err, rc = -EINVAL);
7668 } else if (nla_strcmp(route_prop, "priority") == 0) {
7669 route_prop = nla_next(route_prop, &rem2);
7670 if (nla_type(route_prop) !=
7671 LN_SCALAR_ATTR_INT_VALUE) {
7672 GENL_SET_ERR_MSG(info,
7673 "priority has invalid key");
7674 GOTO(report_err, rc = -EINVAL);
7677 num = nla_get_s64(route_prop);
7679 GENL_SET_ERR_MSG(info,
7680 "invalid priority, must not be negative");
7681 GOTO(report_err, rc = -EINVAL);
7684 } else if (nla_strcmp(route_prop,
7685 "health_sensitivity") == 0) {
7686 route_prop = nla_next(route_prop, &rem2);
7687 if (nla_type(route_prop) !=
7688 LN_SCALAR_ATTR_INT_VALUE) {
7689 GENL_SET_ERR_MSG(info,
7690 "sensitivity has invalid key");
7691 GOTO(report_err, rc = -EINVAL);
7694 num = nla_get_s64(route_prop);
7696 GENL_SET_ERR_MSG(info,
7697 "invalid health sensitivity, must be 1 or greater");
7698 GOTO(report_err, rc = -EINVAL);
7704 if (net_id == LNET_NET_ANY) {
7705 GENL_SET_ERR_MSG(info,
7706 "missing mandatory parameter: network");
7707 GOTO(report_err, rc = -ENODEV);
7710 if (LNET_NID_IS_ANY(&gw_nid)) {
7711 GENL_SET_ERR_MSG(info,
7712 "missing mandatory parameter: gateway");
7713 GOTO(report_err, rc = -ENODEV);
7716 if (info->nlhdr->nlmsg_flags & NLM_F_REPLACE) {
7717 /* Convert the user-supplied real time to monotonic.
7718 * NB: "when" is always in the past
7720 when = ktime_get_seconds() -
7721 (ktime_get_real_seconds() - when);
7723 mutex_unlock(&the_lnet.ln_api_mutex);
7724 rc = lnet_notify(NULL, &gw_nid, alive, false, when);
7725 mutex_lock(&the_lnet.ln_api_mutex);
7727 GOTO(report_err, rc);
7728 else if (the_lnet.ln_state != LNET_STATE_RUNNING)
7729 GOTO(report_err, rc = -ENETDOWN);
7730 } else if (info->nlhdr->nlmsg_flags & NLM_F_CREATE) {
7731 rc = lnet_add_route(net_id, hops, &gw_nid, priority,
7736 GENL_SET_ERR_MSG(info,
7737 "invalid settings for route creation");
7740 GENL_SET_ERR_MSG(info,
7741 "No interface configured on the same net as gateway");
7744 GENL_SET_ERR_MSG(info,
7748 GENL_SET_ERR_MSG(info,
7749 "Route already exists or the specified network is local");
7752 GENL_SET_ERR_MSG(info,
7753 "failed to create route");
7756 GOTO(report_err, rc);
7758 } else if (!(info->nlhdr->nlmsg_flags & NLM_F_CREATE)) {
7759 rc = lnet_del_route(net_id, &gw_nid);
7761 GENL_SET_ERR_MSG(info,
7762 "failed to delete route");
7763 GOTO(report_err, rc);
7768 mutex_unlock(&the_lnet.ln_api_mutex);
7773 static inline struct lnet_genl_ping_list *
7774 lnet_ping_dump_ctx(struct netlink_callback *cb)
7776 return (struct lnet_genl_ping_list *)cb->args[0];
7779 static int lnet_ping_show_done(struct netlink_callback *cb)
7781 struct lnet_genl_ping_list *plist = lnet_ping_dump_ctx(cb);
7784 genradix_free(&plist->lgpl_failed);
7785 genradix_free(&plist->lgpl_list);
7786 LIBCFS_FREE(plist, sizeof(*plist));
7793 /* LNet ping ->start() handler for GET requests */
7794 static int lnet_ping_show_start(struct netlink_callback *cb)
7796 struct genlmsghdr *gnlh = nlmsg_data(cb->nlh);
7797 #ifdef HAVE_NL_PARSE_WITH_EXT_ACK
7798 struct netlink_ext_ack *extack = NULL;
7800 struct lnet_genl_ping_list *plist;
7801 int msg_len = genlmsg_len(gnlh);
7802 struct nlattr *params, *top;
7805 #ifdef HAVE_NL_DUMP_WITH_EXT_ACK
7806 extack = cb->extack;
7808 if (the_lnet.ln_refcount == 0) {
7809 NL_SET_ERR_MSG(extack, "Network is down");
7814 NL_SET_ERR_MSG(extack, "Ping needs NID targets");
7818 LIBCFS_ALLOC(plist, sizeof(*plist));
7820 NL_SET_ERR_MSG(extack, "failed to setup ping list");
7823 genradix_init(&plist->lgpl_list);
7824 plist->lgpl_timeout = cfs_time_seconds(DEFAULT_PEER_TIMEOUT);
7825 plist->lgpl_src_nid = LNET_ANY_NID;
7826 plist->lgpl_index = 0;
7827 plist->lgpl_list_count = 0;
7828 cb->args[0] = (long)plist;
7830 params = genlmsg_data(gnlh);
7831 nla_for_each_attr(top, params, msg_len, rem) {
7832 struct nlattr *nids;
7835 switch (nla_type(top)) {
7836 case LN_SCALAR_ATTR_VALUE:
7837 if (nla_strcmp(top, "timeout") == 0) {
7840 top = nla_next(top, &rem);
7841 if (nla_type(top) != LN_SCALAR_ATTR_INT_VALUE) {
7842 NL_SET_ERR_MSG(extack,
7843 "invalid timeout param");
7844 GOTO(report_err, rc = -EINVAL);
7847 /* If timeout is negative then set default of
7850 timeout = nla_get_s64(top);
7852 timeout < (DEFAULT_PEER_TIMEOUT * MSEC_PER_SEC))
7853 plist->lgpl_timeout =
7854 nsecs_to_jiffies(timeout * NSEC_PER_MSEC);
7855 } else if (nla_strcmp(top, "source") == 0) {
7856 char nidstr[LNET_NIDSTR_SIZE + 1];
7858 top = nla_next(top, &rem);
7859 if (nla_type(top) != LN_SCALAR_ATTR_VALUE) {
7860 NL_SET_ERR_MSG(extack,
7861 "invalid source param");
7862 GOTO(report_err, rc = -EINVAL);
7865 rc = nla_strscpy(nidstr, top, sizeof(nidstr));
7867 NL_SET_ERR_MSG(extack,
7868 "failed to parse source nid");
7869 GOTO(report_err, rc);
7872 rc = libcfs_strnid(&plist->lgpl_src_nid,
7875 NL_SET_ERR_MSG(extack,
7876 "invalid source nid");
7877 GOTO(report_err, rc);
7882 case LN_SCALAR_ATTR_LIST:
7883 nla_for_each_nested(nids, top, rem2) {
7884 char nid[LNET_NIDSTR_SIZE + 1];
7885 struct lnet_processid *id;
7887 if (nla_type(nids) != LN_SCALAR_ATTR_VALUE)
7890 memset(nid, 0, sizeof(nid));
7891 rc = nla_strscpy(nid, nids, sizeof(nid));
7893 NL_SET_ERR_MSG(extack,
7894 "failed to get NID");
7895 GOTO(report_err, rc);
7898 id = genradix_ptr_alloc(&plist->lgpl_list,
7899 plist->lgpl_list_count++,
7902 NL_SET_ERR_MSG(extack,
7903 "failed to allocate NID");
7904 GOTO(report_err, rc = -ENOMEM);
7907 rc = libcfs_strid(id, strim(nid));
7909 NL_SET_ERR_MSG(extack, "invalid NID");
7910 GOTO(report_err, rc);
7921 lnet_ping_show_done(cb);
7926 static const struct ln_key_list ping_props_list = {
7927 .lkl_maxattr = LNET_PING_ATTR_MAX,
7929 [LNET_PING_ATTR_HDR] = {
7930 .lkp_value = "ping",
7931 .lkp_key_format = LNKF_SEQUENCE | LNKF_MAPPING,
7932 .lkp_data_type = NLA_NUL_STRING,
7934 [LNET_PING_ATTR_PRIMARY_NID] = {
7935 .lkp_value = "primary nid",
7936 .lkp_data_type = NLA_STRING
7938 [LNET_PING_ATTR_ERRNO] = {
7939 .lkp_value = "errno",
7940 .lkp_data_type = NLA_S16
7942 [LNET_PING_ATTR_MULTIRAIL] = {
7943 .lkp_value = "Multi-Rail",
7944 .lkp_data_type = NLA_FLAG
7946 [LNET_PING_ATTR_PEER_NI_LIST] = {
7947 .lkp_value = "peer_ni",
7948 .lkp_key_format = LNKF_SEQUENCE | LNKF_MAPPING,
7949 .lkp_data_type = NLA_NESTED
7954 static struct ln_key_list ping_peer_ni_list = {
7955 .lkl_maxattr = LNET_PING_PEER_NI_ATTR_MAX,
7957 [LNET_PING_PEER_NI_ATTR_NID] = {
7959 .lkp_data_type = NLA_STRING
7964 static int lnet_ping_show_dump(struct sk_buff *msg,
7965 struct netlink_callback *cb)
7967 struct lnet_genl_ping_list *plist = lnet_ping_dump_ctx(cb);
7968 struct genlmsghdr *gnlh = nlmsg_data(cb->nlh);
7969 #ifdef HAVE_NL_PARSE_WITH_EXT_ACK
7970 struct netlink_ext_ack *extack = NULL;
7972 int portid = NETLINK_CB(cb->skb).portid;
7973 int seq = cb->nlh->nlmsg_seq;
7974 int idx = plist->lgpl_index;
7977 #ifdef HAVE_NL_DUMP_WITH_EXT_ACK
7978 extack = cb->extack;
7980 if (!plist->lgpl_index) {
7981 const struct ln_key_list *all[] = {
7982 &ping_props_list, &ping_peer_ni_list, NULL
7985 rc = lnet_genl_send_scalar_list(msg, portid, seq,
7987 NLM_F_CREATE | NLM_F_MULTI,
7988 LNET_CMD_PING, all);
7990 NL_SET_ERR_MSG(extack, "failed to send key table");
7991 GOTO(send_error, rc);
7994 genradix_init(&plist->lgpl_failed);
7997 while (idx < plist->lgpl_list_count) {
7998 struct lnet_nid primary_nid = LNET_ANY_NID;
7999 struct lnet_genl_ping_list peers;
8000 struct lnet_processid *id;
8001 struct nlattr *nid_list;
8002 struct lnet_peer *lp;
8003 bool mr_flag = false;
8007 id = genradix_ptr(&plist->lgpl_list, idx++);
8008 if (nid_is_lo0(&id->nid))
8011 rc = lnet_ping(id, &plist->lgpl_src_nid, plist->lgpl_timeout,
8012 &peers, lnet_interfaces_max);
8014 struct lnet_fail_ping *fail;
8016 fail = genradix_ptr_alloc(&plist->lgpl_failed,
8017 plist->lgpl_failed_count++,
8020 NL_SET_ERR_MSG(extack,
8021 "failed to allocate failed NID");
8022 GOTO(send_error, rc);
8025 fail->lfp_errno = rc;
8029 mutex_lock(&the_lnet.ln_api_mutex);
8030 lp = lnet_find_peer(&id->nid);
8032 primary_nid = lp->lp_primary_nid;
8033 mr_flag = lnet_peer_is_multi_rail(lp);
8034 lnet_peer_decref_locked(lp);
8036 mutex_unlock(&the_lnet.ln_api_mutex);
8038 hdr = genlmsg_put(msg, portid, seq, &lnet_family,
8039 NLM_F_MULTI, LNET_CMD_PING);
8041 NL_SET_ERR_MSG(extack, "failed to send values");
8042 genlmsg_cancel(msg, hdr);
8043 GOTO(send_error, rc = -EMSGSIZE);
8047 nla_put_string(msg, LNET_PING_ATTR_HDR, "");
8049 nla_put_string(msg, LNET_PING_ATTR_PRIMARY_NID,
8050 libcfs_nidstr(&primary_nid));
8052 nla_put_flag(msg, LNET_PING_ATTR_MULTIRAIL);
8054 nid_list = nla_nest_start(msg, LNET_PING_ATTR_PEER_NI_LIST);
8055 for (count = 0; count < rc; count++) {
8056 struct lnet_processid *result;
8057 struct nlattr *nid_attr;
8060 result = genradix_ptr(&peers.lgpl_list, count);
8061 if (nid_is_lo0(&result->nid))
8064 nid_attr = nla_nest_start(msg, count + 1);
8065 if (gnlh->version == 1)
8066 idstr = libcfs_nidstr(&result->nid);
8068 idstr = libcfs_idstr(result);
8069 nla_put_string(msg, LNET_PING_PEER_NI_ATTR_NID, idstr);
8070 nla_nest_end(msg, nid_attr);
8072 nla_nest_end(msg, nid_list);
8073 genlmsg_end(msg, hdr);
8075 genradix_free(&peers.lgpl_list);
8078 for (i = 0; i < plist->lgpl_failed_count; i++) {
8079 struct lnet_fail_ping *fail;
8082 fail = genradix_ptr(&plist->lgpl_failed, i);
8084 hdr = genlmsg_put(msg, portid, seq, &lnet_family,
8085 NLM_F_MULTI, LNET_CMD_PING);
8087 NL_SET_ERR_MSG(extack, "failed to send failed values");
8088 genlmsg_cancel(msg, hdr);
8089 GOTO(send_error, rc = -EMSGSIZE);
8093 nla_put_string(msg, LNET_PING_ATTR_HDR, "");
8095 nla_put_string(msg, LNET_PING_ATTR_PRIMARY_NID,
8096 libcfs_nidstr(&fail->lfp_id.nid));
8097 nla_put_s16(msg, LNET_PING_ATTR_ERRNO, fail->lfp_errno);
8098 genlmsg_end(msg, hdr);
8100 rc = 0; /* don't treat it as an error */
8102 plist->lgpl_index = idx;
8104 return lnet_nl_send_error(cb->skb, portid, seq, rc);
8107 #ifndef HAVE_NETLINK_CALLBACK_START
8108 static int lnet_old_ping_show_dump(struct sk_buff *msg,
8109 struct netlink_callback *cb)
8112 int rc = lnet_ping_show_start(cb);
8118 return lnet_ping_show_dump(msg, cb);
8122 static const struct ln_key_list discover_err_props_list = {
8123 .lkl_maxattr = LNET_ERR_ATTR_MAX,
8125 [LNET_ERR_ATTR_HDR] = {
8126 .lkp_value = "manage",
8127 .lkp_key_format = LNKF_SEQUENCE | LNKF_MAPPING,
8128 .lkp_data_type = NLA_NUL_STRING,
8130 [LNET_ERR_ATTR_TYPE] = {
8131 .lkp_value = "discover",
8132 .lkp_data_type = NLA_STRING,
8134 [LNET_ERR_ATTR_ERRNO] = {
8135 .lkp_value = "errno",
8136 .lkp_data_type = NLA_S16,
8138 [LNET_ERR_ATTR_DESCR] = {
8139 .lkp_value = "descr",
8140 .lkp_data_type = NLA_STRING,
8145 static const struct ln_key_list discover_props_list = {
8146 .lkl_maxattr = LNET_PING_ATTR_MAX,
8148 [LNET_PING_ATTR_HDR] = {
8149 .lkp_value = "discover",
8150 .lkp_key_format = LNKF_SEQUENCE | LNKF_MAPPING,
8151 .lkp_data_type = NLA_NUL_STRING,
8153 [LNET_PING_ATTR_PRIMARY_NID] = {
8154 .lkp_value = "primary nid",
8155 .lkp_data_type = NLA_STRING
8157 [LNET_PING_ATTR_ERRNO] = {
8158 .lkp_value = "errno",
8159 .lkp_data_type = NLA_S16
8161 [LNET_PING_ATTR_MULTIRAIL] = {
8162 .lkp_value = "Multi-Rail",
8163 .lkp_data_type = NLA_FLAG
8165 [LNET_PING_ATTR_PEER_NI_LIST] = {
8166 .lkp_value = "peer_ni",
8167 .lkp_key_format = LNKF_SEQUENCE | LNKF_MAPPING,
8168 .lkp_data_type = NLA_NESTED
8173 static int lnet_ping_cmd(struct sk_buff *skb, struct genl_info *info)
8175 const struct ln_key_list *all[] = {
8176 &discover_props_list, &ping_peer_ni_list, NULL
8178 struct nlmsghdr *nlh = nlmsg_hdr(skb);
8179 struct genlmsghdr *gnlh = nlmsg_data(nlh);
8180 struct nlattr *params = genlmsg_data(gnlh);
8181 struct lnet_genl_ping_list dlists;
8182 int msg_len, rem, rc = 0, i;
8183 bool clear_hdr = false;
8184 struct sk_buff *reply;
8185 struct nlattr *attr;
8188 msg_len = genlmsg_len(gnlh);
8190 GENL_SET_ERR_MSG(info, "no configuration");
8194 if (!(info->nlhdr->nlmsg_flags & NLM_F_CREATE)) {
8195 GENL_SET_ERR_MSG(info, "only NLM_F_CREATE setting is allowed");
8199 reply = genlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
8201 GENL_SET_ERR_MSG(info,
8202 "fail to allocate reply");
8206 genradix_init(&dlists.lgpl_failed);
8207 dlists.lgpl_failed_count = 0;
8208 genradix_init(&dlists.lgpl_list);
8209 dlists.lgpl_list_count = 0;
8211 rc = lnet_genl_send_scalar_list(reply, info->snd_portid,
8212 info->snd_seq, &lnet_family,
8213 NLM_F_CREATE | NLM_F_MULTI,
8214 LNET_CMD_PING, all);
8216 GENL_SET_ERR_MSG(info,
8217 "failed to send key table");
8218 GOTO(report_err, rc);
8221 nla_for_each_attr(attr, params, msg_len, rem) {
8222 struct nlattr *nids;
8225 /* We only care about the NID list to discover with */
8226 if (nla_type(attr) != LN_SCALAR_ATTR_LIST)
8229 nla_for_each_nested(nids, attr, rem2) {
8230 char nid[LNET_NIDSTR_SIZE + 1];
8231 struct lnet_processid id;
8232 struct nlattr *nid_list;
8233 struct lnet_peer *lp;
8236 if (nla_type(nids) != LN_SCALAR_ATTR_VALUE)
8239 memset(nid, 0, sizeof(nid));
8240 rc = nla_strscpy(nid, nids, sizeof(nid));
8242 GENL_SET_ERR_MSG(info,
8243 "failed to get NID");
8244 GOTO(report_err, rc);
8247 len = libcfs_strid(&id, strim(nid));
8249 struct lnet_fail_ping *fail;
8251 fail = genradix_ptr_alloc(&dlists.lgpl_failed,
8252 dlists.lgpl_failed_count++,
8255 GENL_SET_ERR_MSG(info,
8256 "failed to allocate improper NID");
8257 GOTO(report_err, rc = -ENOMEM);
8259 memset(fail->lfp_msg, '\0', sizeof(fail->lfp_msg));
8260 snprintf(fail->lfp_msg, sizeof(fail->lfp_msg),
8261 "cannot parse NID '%s'", strim(nid));
8263 fail->lfp_errno = len;
8267 if (LNET_NID_IS_ANY(&id.nid))
8270 rc = lnet_discover(&id,
8271 info->nlhdr->nlmsg_flags & NLM_F_EXCL,
8274 struct lnet_fail_ping *fail;
8276 fail = genradix_ptr_alloc(&dlists.lgpl_failed,
8277 dlists.lgpl_failed_count++,
8280 GENL_SET_ERR_MSG(info,
8281 "failed to allocate failed NID");
8282 GOTO(report_err, rc = -ENOMEM);
8284 memset(fail->lfp_msg, '\0', sizeof(fail->lfp_msg));
8285 snprintf(fail->lfp_msg, sizeof(fail->lfp_msg),
8286 "failed to discover %s",
8287 libcfs_nidstr(&id.nid));
8289 fail->lfp_errno = rc;
8293 /* create the genetlink message header */
8294 hdr = genlmsg_put(reply, info->snd_portid, info->snd_seq,
8295 &lnet_family, NLM_F_MULTI, LNET_CMD_PING);
8297 GENL_SET_ERR_MSG(info,
8298 "failed to allocate hdr");
8299 GOTO(report_err, rc = -ENOMEM);
8303 nla_put_string(reply, LNET_PING_ATTR_HDR, "");
8307 lp = lnet_find_peer(&id.nid);
8309 nla_put_string(reply, LNET_PING_ATTR_PRIMARY_NID,
8310 libcfs_nidstr(&lp->lp_primary_nid));
8311 if (lnet_peer_is_multi_rail(lp))
8312 nla_put_flag(reply, LNET_PING_ATTR_MULTIRAIL);
8313 lnet_peer_decref_locked(lp);
8316 nid_list = nla_nest_start(reply, LNET_PING_ATTR_PEER_NI_LIST);
8317 for (i = 0; i < dlists.lgpl_list_count; i++) {
8318 struct lnet_processid *found;
8319 struct nlattr *nid_attr;
8322 found = genradix_ptr(&dlists.lgpl_list, i);
8323 if (nid_is_lo0(&found->nid))
8326 nid_attr = nla_nest_start(reply, i + 1);
8327 if (id.pid == LNET_PID_LUSTRE)
8328 idstr = libcfs_nidstr(&found->nid);
8330 idstr = libcfs_idstr(found);
8331 nla_put_string(reply, LNET_PING_PEER_NI_ATTR_NID, idstr);
8332 nla_nest_end(reply, nid_attr);
8334 nla_nest_end(reply, nid_list);
8336 genlmsg_end(reply, hdr);
8340 if (dlists.lgpl_failed_count) {
8341 int flags = NLM_F_CREATE | NLM_F_REPLACE | NLM_F_MULTI;
8342 const struct ln_key_list *fail[] = {
8343 &discover_err_props_list, NULL
8346 rc = lnet_genl_send_scalar_list(reply, info->snd_portid,
8347 info->snd_seq, &lnet_family,
8348 flags, LNET_CMD_PING, fail);
8350 GENL_SET_ERR_MSG(info,
8351 "failed to send new key table");
8352 GOTO(report_err, rc);
8355 for (i = 0; i < dlists.lgpl_failed_count; i++) {
8356 struct lnet_fail_ping *fail;
8358 hdr = genlmsg_put(reply, info->snd_portid, info->snd_seq,
8359 &lnet_family, NLM_F_MULTI, LNET_CMD_PING);
8361 GENL_SET_ERR_MSG(info,
8362 "failed to send failed values");
8363 GOTO(report_err, rc = -ENOMSG);
8366 fail = genradix_ptr(&dlists.lgpl_failed, i);
8368 nla_put_string(reply, LNET_ERR_ATTR_HDR, "");
8370 nla_put_string(reply, LNET_ERR_ATTR_TYPE, "\n");
8371 nla_put_s16(reply, LNET_ERR_ATTR_ERRNO,
8373 nla_put_string(reply, LNET_ERR_ATTR_DESCR,
8375 genlmsg_end(reply, hdr);
8379 nlh = nlmsg_put(reply, info->snd_portid, info->snd_seq, NLMSG_DONE, 0,
8382 genlmsg_cancel(reply, hdr);
8383 GENL_SET_ERR_MSG(info,
8384 "failed to finish message");
8385 GOTO(report_err, rc = -EMSGSIZE);
8389 genradix_free(&dlists.lgpl_failed);
8390 genradix_free(&dlists.lgpl_list);
8393 genlmsg_cancel(reply, hdr);
8396 rc = genlmsg_reply(reply, info);
8402 static const struct genl_multicast_group lnet_mcast_grps[] = {
8403 { .name = "ip2net", },
8405 { .name = "peer", },
8406 { .name = "route", },
8407 { .name = "ping", },
8408 { .name = "discover", },
8409 { .name = "cpt-of-nid", },
8412 static const struct genl_ops lnet_genl_ops[] = {
8414 .cmd = LNET_CMD_NETS,
8415 .flags = GENL_ADMIN_PERM,
8416 #ifdef HAVE_NETLINK_CALLBACK_START
8417 .start = lnet_net_show_start,
8418 .dumpit = lnet_net_show_dump,
8420 .dumpit = lnet_old_net_show_dump,
8422 .done = lnet_net_show_done,
8423 .doit = lnet_net_cmd,
8426 .cmd = LNET_CMD_PEERS,
8427 .flags = GENL_ADMIN_PERM,
8428 #ifdef HAVE_NETLINK_CALLBACK_START
8429 .start = lnet_peer_ni_show_start,
8430 .dumpit = lnet_peer_ni_show_dump,
8432 .dumpit = lnet_old_peer_ni_show_dump,
8434 .done = lnet_peer_ni_show_done,
8435 .doit = lnet_peer_ni_cmd,
8438 .cmd = LNET_CMD_ROUTES,
8439 .flags = GENL_ADMIN_PERM,
8440 #ifdef HAVE_NETLINK_CALLBACK_START
8441 .start = lnet_route_show_start,
8442 .dumpit = lnet_route_show_dump,
8444 .dumpit = lnet_old_route_show_dump,
8446 .done = lnet_route_show_done,
8447 .doit = lnet_route_cmd,
8450 .cmd = LNET_CMD_PING,
8451 .flags = GENL_ADMIN_PERM,
8452 #ifdef HAVE_NETLINK_CALLBACK_START
8453 .start = lnet_ping_show_start,
8454 .dumpit = lnet_ping_show_dump,
8456 .dumpit = lnet_old_ping_show_dump,
8458 .done = lnet_ping_show_done,
8459 .doit = lnet_ping_cmd,
8462 .cmd = LNET_CMD_CPT_OF_NID,
8463 #ifdef HAVE_NETLINK_CALLBACK_START
8464 .start = lnet_cpt_of_nid_show_start,
8465 .dumpit = lnet_cpt_of_nid_show_dump,
8467 .dumpit = lnet_old_cpt_of_nid_show_dump,
8469 .done = lnet_cpt_of_nid_show_done,
8473 static struct genl_family lnet_family = {
8474 .name = LNET_GENL_NAME,
8475 .version = LNET_GENL_VERSION,
8476 .module = THIS_MODULE,
8478 .ops = lnet_genl_ops,
8479 .n_ops = ARRAY_SIZE(lnet_genl_ops),
8480 .mcgrps = lnet_mcast_grps,
8481 .n_mcgrps = ARRAY_SIZE(lnet_mcast_grps),
8482 #ifdef GENL_FAMILY_HAS_RESV_START_OP
8483 .resv_start_op = __LNET_CMD_MAX_PLUS_ONE,
8487 void LNetDebugPeer(struct lnet_processid *id)
8489 lnet_debug_peer(&id->nid);
8491 EXPORT_SYMBOL(LNetDebugPeer);
8494 * Determine if the specified peer \a nid is on the local node.
8496 * \param nid peer nid to check
8498 * \retval true If peer NID is on the local node.
8499 * \retval false If peer NID is not on the local node.
8501 bool LNetIsPeerLocal(struct lnet_nid *nid)
8503 struct lnet_net *net;
8507 cpt = lnet_net_lock_current();
8508 list_for_each_entry(net, &the_lnet.ln_nets, net_list) {
8509 list_for_each_entry(ni, &net->net_ni_list, ni_netlist) {
8510 if (nid_same(&ni->ni_nid, nid)) {
8511 lnet_net_unlock(cpt);
8516 lnet_net_unlock(cpt);
8520 EXPORT_SYMBOL(LNetIsPeerLocal);
8523 * Retrieve the struct lnet_process_id ID of LNet interface at \a index.
8524 * Note that all interfaces share a same PID, as requested by LNetNIInit().
8526 * @index Index of the interface to look up.
8527 * @id On successful return, this location will hold the
8528 * struct lnet_process_id ID of the interface.
8529 * @large_nids Report large NIDs if this is true.
8531 * RETURN 0 If an interface exists at \a index.
8532 * -ENOENT If no interface has been found.
8535 LNetGetId(unsigned int index, struct lnet_processid *id, bool large_nids)
8538 struct lnet_net *net;
8542 LASSERT(the_lnet.ln_refcount > 0);
8544 cpt = lnet_net_lock_current();
8546 list_for_each_entry(net, &the_lnet.ln_nets, net_list) {
8547 list_for_each_entry(ni, &net->net_ni_list, ni_netlist) {
8548 if (!large_nids && !nid_is_nid4(&ni->ni_nid))
8554 id->nid = ni->ni_nid;
8555 id->pid = the_lnet.ln_pid;
8561 lnet_net_unlock(cpt);
8564 EXPORT_SYMBOL(LNetGetId);
8570 struct lnet_handle_md mdh;
8571 struct completion completion;
8575 lnet_ping_event_handler(struct lnet_event *event)
8577 struct ping_data *pd = event->md_user_ptr;
8579 CDEBUG(D_NET, "ping event (%d %d)%s\n",
8580 event->type, event->status,
8581 event->unlinked ? " unlinked" : "");
8583 if (event->status) {
8585 pd->rc = event->status;
8586 } else if (event->type == LNET_EVENT_REPLY) {
8588 pd->rc = event->mlength;
8591 if (event->unlinked)
8592 pd->pd_unlinked = 1;
8594 if (event->unlinked ||
8595 (event->type == LNET_EVENT_SEND && event->status))
8596 complete(&pd->completion);
8599 static int lnet_ping(struct lnet_processid *id, struct lnet_nid *src_nid,
8600 signed long timeout, struct lnet_genl_ping_list *plist,
8603 int id_bytes = sizeof(struct lnet_ni_status); /* For 0@lo */
8604 struct lnet_md md = { NULL };
8605 struct ping_data pd = { 0 };
8606 struct lnet_ping_buffer *pbuf;
8607 struct lnet_processid pid;
8608 struct lnet_ping_iter pi;
8615 genradix_init(&plist->lgpl_list);
8617 /* n_ids limit is arbitrary */
8618 if (n_ids <= 0 || LNET_NID_IS_ANY(&id->nid))
8621 /* if the user buffer has more space than the lnet_interfaces_max
8622 * then only fill it up to lnet_interfaces_max
8624 if (n_ids > lnet_interfaces_max)
8625 n_ids = lnet_interfaces_max;
8627 if (id->pid == LNET_PID_ANY)
8628 id->pid = LNET_PID_LUSTRE;
8630 id_bytes += lnet_ping_sts_size(&id->nid) * n_ids;
8631 pbuf = lnet_ping_buffer_alloc(id_bytes, GFP_NOFS);
8635 /* initialize md content */
8636 md.start = &pbuf->pb_info;
8637 md.length = id_bytes;
8638 md.threshold = 2; /* GET/REPLY */
8640 md.options = LNET_MD_TRUNCATE;
8642 md.handler = lnet_ping_event_handler;
8644 init_completion(&pd.completion);
8646 rc = LNetMDBind(&md, LNET_UNLINK, &pd.mdh);
8648 CERROR("Can't bind MD: %d\n", rc);
8649 goto fail_ping_buffer_decref;
8652 rc = LNetGet(src_nid, pd.mdh, id, LNET_RESERVED_PORTAL,
8653 LNET_PROTO_PING_MATCHBITS, 0, false);
8655 /* Don't CERROR; this could be deliberate! */
8656 rc2 = LNetMDUnlink(pd.mdh);
8659 /* NB must wait for the UNLINK event below... */
8662 /* Ensure completion in finite time... */
8663 wait_for_completion_timeout(&pd.completion, timeout);
8664 if (!pd.pd_unlinked) {
8665 LNetMDUnlink(pd.mdh);
8666 wait_for_completion(&pd.completion);
8671 goto fail_ping_buffer_decref;
8675 LASSERT(nob >= 0 && nob <= id_bytes);
8677 rc = -EPROTO; /* if I can't parse... */
8679 if (nob < LNET_PING_INFO_HDR_SIZE) {
8680 CERROR("%s: ping info too short %d\n",
8681 libcfs_idstr(id), nob);
8682 goto fail_ping_buffer_decref;
8685 if (pbuf->pb_info.pi_magic == __swab32(LNET_PROTO_PING_MAGIC)) {
8686 lnet_swap_pinginfo(pbuf);
8687 } else if (pbuf->pb_info.pi_magic != LNET_PROTO_PING_MAGIC) {
8688 CERROR("%s: Unexpected magic %08x\n",
8689 libcfs_idstr(id), pbuf->pb_info.pi_magic);
8690 goto fail_ping_buffer_decref;
8693 if ((pbuf->pb_info.pi_features & LNET_PING_FEAT_NI_STATUS) == 0) {
8694 CERROR("%s: ping w/o NI status: 0x%x\n",
8695 libcfs_idstr(id), pbuf->pb_info.pi_features);
8696 goto fail_ping_buffer_decref;
8699 /* Test if smaller than lnet_pinginfo with just one pi_ni status info.
8700 * That one might contain size when large nids are used.
8702 if (nob < offsetof(struct lnet_ping_info, pi_ni[1])) {
8703 CERROR("%s: Short reply %d(%lu min)\n",
8704 libcfs_idstr(id), nob,
8705 offsetof(struct lnet_ping_info, pi_ni[1]));
8706 goto fail_ping_buffer_decref;
8709 if (ping_info_count_entries(pbuf) < n_ids) {
8710 n_ids = ping_info_count_entries(pbuf);
8711 id_bytes = lnet_ping_info_size(&pbuf->pb_info);
8714 if (nob < id_bytes) {
8715 CERROR("%s: Short reply %d(%d expected)\n",
8716 libcfs_idstr(id), nob, id_bytes);
8717 goto fail_ping_buffer_decref;
8720 for (st = ping_iter_first(&pi, pbuf, &pid.nid);
8722 st = ping_iter_next(&pi, &pid.nid)) {
8723 id = genradix_ptr_alloc(&plist->lgpl_list, i++, GFP_ATOMIC);
8726 goto fail_ping_buffer_decref;
8729 id->pid = pbuf->pb_info.pi_pid;
8733 fail_ping_buffer_decref:
8734 lnet_ping_buffer_decref(pbuf);
8739 lnet_discover(struct lnet_processid *pid, u32 force,
8740 struct lnet_genl_ping_list *dlist)
8742 struct lnet_peer_ni *lpni;
8743 struct lnet_peer_ni *p;
8744 struct lnet_peer *lp;
8748 if (LNET_NID_IS_ANY(&pid->nid))
8751 if (pid->pid == LNET_PID_ANY)
8752 pid->pid = LNET_PID_LUSTRE;
8754 cpt = lnet_net_lock_current();
8755 lpni = lnet_peerni_by_nid_locked(&pid->nid, NULL, cpt);
8762 * Clearing the NIDS_UPTODATE flag ensures the peer will
8763 * be discovered, provided discovery has not been disabled.
8765 lp = lpni->lpni_peer_net->lpn_peer;
8766 spin_lock(&lp->lp_lock);
8767 lp->lp_state &= ~LNET_PEER_NIDS_UPTODATE;
8768 /* If the force flag is set, force a PING and PUSH as well. */
8770 lp->lp_state |= LNET_PEER_FORCE_PING | LNET_PEER_FORCE_PUSH;
8771 spin_unlock(&lp->lp_lock);
8772 rc = lnet_discover_peer_locked(lpni, cpt, true);
8776 /* The lpni (or lp) for this NID may have changed and our ref is
8777 * the only thing keeping the old one around. Release the ref
8778 * and lookup the lpni again
8780 lnet_peer_ni_decref_locked(lpni);
8781 lpni = lnet_peer_ni_find_locked(&pid->nid);
8786 lp = lpni->lpni_peer_net->lpn_peer;
8788 dlist->lgpl_list_count = 0;
8790 while ((p = lnet_get_next_peer_ni_locked(lp, NULL, p)) != NULL) {
8791 struct lnet_processid *id;
8793 id = genradix_ptr_alloc(&dlist->lgpl_list,
8794 dlist->lgpl_list_count++, GFP_KERNEL);
8800 id->nid = p->lpni_nid;
8802 rc = dlist->lgpl_list_count;
8805 lnet_peer_ni_decref_locked(lpni);
8807 lnet_net_unlock(cpt);
8813 * Retrieve peer discovery status.
8815 * \retval 1 if lnet_peer_discovery_disabled is 0
8816 * \retval 0 if lnet_peer_discovery_disabled is 1
8819 LNetGetPeerDiscoveryStatus(void)
8821 return !lnet_peer_discovery_disabled;
8823 EXPORT_SYMBOL(LNetGetPeerDiscoveryStatus);