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) 2012, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
31 * lnet/include/lnet/lib-lnet.h
33 * Top level include for library side routines
36 #ifndef __LNET_LIB_LNET_H__
37 #define __LNET_LIB_LNET_H__
40 #define CFS_FAIL_PTLRPC_OST_BULK_CB2 0xe000
41 #define CFS_FAIL_MATCH_MD_NID 0xe001
43 #include <linux/netdevice.h>
45 #include <libcfs/libcfs.h>
47 #include <lnet/lib-cpt.h>
48 #include <lnet/lib-types.h>
49 #include <uapi/linux/lnet/lnet-dlc.h>
50 #include <uapi/linux/lnet/lnet-types.h>
51 #include <uapi/linux/lnet/lnetctl.h>
52 #include <uapi/linux/lnet/nidstr.h>
56 extern struct lnet the_lnet; /* THE network */
58 #if (BITS_PER_LONG == 32)
59 /* 2 CPTs, allowing more CPTs might make us under memory pressure */
60 # define LNET_CPT_MAX_BITS 1
62 #else /* 64-bit system */
64 * 256 CPTs for thousands of CPUs, allowing more CPTs might make us
65 * under risk of consuming all lh_cookie.
67 # define LNET_CPT_MAX_BITS 8
68 #endif /* BITS_PER_LONG == 32 */
70 /* max allowed CPT number */
71 #define LNET_CPT_MAX (1 << LNET_CPT_MAX_BITS)
73 #define LNET_CPT_NUMBER (the_lnet.ln_cpt_number)
74 #define LNET_CPT_BITS (the_lnet.ln_cpt_bits)
75 #define LNET_CPT_MASK ((1ULL << LNET_CPT_BITS) - 1)
78 #define LNET_LOCK_EX CFS_PERCPT_LOCK_EX
80 /* need both kernel and user-land acceptor */
81 #define LNET_ACCEPTOR_MIN_RESERVED_PORT 512
82 #define LNET_ACCEPTOR_MAX_RESERVED_PORT 1023
84 /* default timeout and credits */
85 #define DEFAULT_PEER_TIMEOUT 180
86 #define DEFAULT_PEER_CREDITS 8
87 #define DEFAULT_CREDITS 256
89 /* default number of connections per peer */
90 #define DEFAULT_CONNS_PER_PEER 0
92 #ifdef HAVE_KERN_SOCK_GETNAME_2ARGS
93 #define lnet_kernel_getpeername(sock, addr, addrlen) \
94 kernel_getpeername(sock, addr)
95 #define lnet_kernel_getsockname(sock, addr, addrlen) \
96 kernel_getsockname(sock, addr)
98 #define lnet_kernel_getpeername(sock, addr, addrlen) \
99 kernel_getpeername(sock, addr, addrlen)
100 #define lnet_kernel_getsockname(sock, addr, addrlen) \
101 kernel_getsockname(sock, addr, addrlen)
105 * kernel 5.3: commit ef11db3310e272d3d8dbe8739e0770820dd20e52
106 * kernel 4.18.0-193.el8:
107 * added in_dev_for_each_ifa_rtnl and in_dev_for_each_ifa_rcu
108 * and removed for_ifa and endfor_ifa.
109 * Use the _rntl variant as the current locking is rtnl.
111 #ifdef HAVE_IN_DEV_FOR_EACH_IFA_RTNL
112 #define DECLARE_CONST_IN_IFADDR(ifa) const struct in_ifaddr *ifa
113 #define endfor_ifa(in_dev)
115 #define DECLARE_CONST_IN_IFADDR(ifa)
116 #define in_dev_for_each_ifa_rtnl(ifa, in_dev) for_ifa((in_dev))
117 #define in_dev_for_each_ifa_rcu(ifa, in_dev) for_ifa((in_dev))
121 # if defined(__GNUC__) && __GNUC__ >= 7
122 # define fallthrough __attribute__((fallthrough)) /* fallthrough */
124 # define fallthrough do {} while (0) /* fallthrough */
128 int choose_ipv4_src(__u32 *ret,
129 int interface, __u32 dst_ipaddr, struct net *ns);
131 bool lnet_is_route_alive(struct lnet_route *route);
132 bool lnet_is_gateway_alive(struct lnet_peer *gw);
134 static inline int lnet_is_wire_handle_none(struct lnet_handle_wire *wh)
136 return (wh->wh_interface_cookie == LNET_WIRE_HANDLE_COOKIE_NONE &&
137 wh->wh_object_cookie == LNET_WIRE_HANDLE_COOKIE_NONE);
140 static inline int lnet_md_exhausted(struct lnet_libmd *md)
142 return (md->md_threshold == 0 ||
143 ((md->md_options & LNET_MD_MAX_SIZE) != 0 &&
144 md->md_offset + md->md_max_size > md->md_length));
147 static inline int lnet_md_unlinkable(struct lnet_libmd *md)
149 /* Should unlink md when its refcount is 0 and either:
150 * - md has been flagged for deletion (by auto unlink or LNetM[DE]Unlink,
151 * in the latter case md may not be exhausted).
152 * - auto unlink is on and md is exhausted.
154 if (md->md_refcount != 0)
157 if ((md->md_flags & LNET_MD_FLAG_ZOMBIE) != 0)
160 return ((md->md_flags & LNET_MD_FLAG_AUTO_UNLINK) != 0 &&
161 lnet_md_exhausted(md));
164 #define lnet_cpt_table() (the_lnet.ln_cpt_table)
165 #define lnet_cpt_current() cfs_cpt_current(the_lnet.ln_cpt_table, 1)
168 lnet_cpt_of_cookie(__u64 cookie)
170 unsigned int cpt = (cookie >> LNET_COOKIE_TYPE_BITS) & LNET_CPT_MASK;
172 /* LNET_CPT_NUMBER doesn't have to be power2, which means we can
173 * get illegal cpt from it's invalid cookie */
174 return cpt < LNET_CPT_NUMBER ? cpt : cpt % LNET_CPT_NUMBER;
178 lnet_res_lock(int cpt)
180 cfs_percpt_lock(the_lnet.ln_res_lock, cpt);
184 lnet_res_unlock(int cpt)
186 cfs_percpt_unlock(the_lnet.ln_res_lock, cpt);
190 lnet_res_lock_current(void)
192 int cpt = lnet_cpt_current();
199 lnet_net_lock(int cpt)
201 cfs_percpt_lock(the_lnet.ln_net_lock, cpt);
205 lnet_net_unlock(int cpt)
207 cfs_percpt_unlock(the_lnet.ln_net_lock, cpt);
211 lnet_net_lock_current(void)
213 int cpt = lnet_cpt_current();
219 #define LNET_LOCK() lnet_net_lock(LNET_LOCK_EX)
220 #define LNET_UNLOCK() lnet_net_unlock(LNET_LOCK_EX)
222 #define lnet_ptl_lock(ptl) spin_lock(&(ptl)->ptl_lock)
223 #define lnet_ptl_unlock(ptl) spin_unlock(&(ptl)->ptl_lock)
224 #define lnet_ni_lock(ni) spin_lock(&(ni)->ni_lock)
225 #define lnet_ni_unlock(ni) spin_unlock(&(ni)->ni_lock)
227 #define MAX_PORTALS 64
229 #define LNET_SMALL_MD_SIZE offsetof(struct lnet_libmd, md_kiov[1])
230 extern struct kmem_cache *lnet_mes_cachep; /* MEs kmem_cache */
231 extern struct kmem_cache *lnet_small_mds_cachep; /* <= LNET_SMALL_MD_SIZE bytes
233 extern struct kmem_cache *lnet_udsp_cachep;
234 extern struct kmem_cache *lnet_rspt_cachep;
235 extern struct kmem_cache *lnet_msg_cachep;
238 lnet_ni_set_status_locked(struct lnet_ni *ni, __u32 status)
239 __must_hold(&ni->ni_lock)
243 if (ni->ni_status && *ni->ni_status != status) {
244 CDEBUG(D_NET, "ni %s status changed from %#x to %#x\n",
245 libcfs_nidstr(&ni->ni_nid),
246 *ni->ni_status, status);
247 *ni->ni_status = status;
254 static inline unsigned int
255 lnet_ni_get_status_locked(struct lnet_ni *ni)
256 __must_hold(&ni->ni_lock)
258 if (nid_is_lo0(&ni->ni_nid))
259 return LNET_NI_STATUS_UP;
260 else if (atomic_read(&ni->ni_fatal_error_on))
261 return LNET_NI_STATUS_DOWN;
262 else if (the_lnet.ln_routing && ni->ni_status)
263 return *ni->ni_status;
265 return LNET_NI_STATUS_UP;
269 lnet_ni_set_status(struct lnet_ni *ni, __u32 status)
274 update = lnet_ni_set_status_locked(ni, status);
280 static inline void lnet_md_wait_handling(struct lnet_libmd *md, int cpt)
282 wait_queue_head_t *wq = __var_waitqueue(md);
283 #if defined(HAVE_WAIT_BIT_QUEUE_ENTRY) || !defined(HAVE_WAIT_VAR_EVENT)
284 struct wait_bit_queue_entry entry;
285 wait_queue_entry_t *wqe = &entry.wq_entry;
287 struct wait_bit_queue entry;
288 wait_queue_entry_t *wqe = &entry.wait;
290 init_wait_var_entry(&entry, md, 0);
291 prepare_to_wait_event(wq, wqe, TASK_IDLE);
292 if (md->md_flags & LNET_MD_FLAG_HANDLING) {
293 /* Race with unlocked call to ->md_handler.
294 * It is safe to drop the res_lock here as the
295 * caller has only just claimed it.
297 lnet_res_unlock(cpt);
299 /* Cannot check md now, it might be freed. Caller
300 * must reclaim reference and check.
304 finish_wait(wq, wqe);
308 lnet_md_free(struct lnet_libmd *md)
312 LASSERTF(!md->md_rspt_ptr, "md %px rsp %px\n", md, md->md_rspt_ptr);
314 size = offsetof(struct lnet_libmd, md_kiov[md->md_niov]);
316 if (size <= LNET_SMALL_MD_SIZE) {
317 LIBCFS_MEM_MSG(md, size, "slab-freed");
318 kmem_cache_free(lnet_small_mds_cachep, md);
320 LIBCFS_FREE(md, size);
324 struct lnet_libhandle *lnet_res_lh_lookup(struct lnet_res_container *rec,
326 void lnet_res_lh_initialize(struct lnet_res_container *rec,
327 struct lnet_libhandle *lh);
329 lnet_res_lh_invalidate(struct lnet_libhandle *lh)
331 /* ALWAYS called with resource lock held */
332 /* NB: cookie is still useful, don't reset it */
333 list_del(&lh->lh_hash_chain);
337 lnet_md2handle(struct lnet_handle_md *handle, struct lnet_libmd *md)
339 handle->cookie = md->md_lh.lh_cookie;
342 static inline struct lnet_libmd *
343 lnet_handle2md(struct lnet_handle_md *handle)
345 /* ALWAYS called with resource lock held */
346 struct lnet_libhandle *lh;
349 cpt = lnet_cpt_of_cookie(handle->cookie);
350 lh = lnet_res_lh_lookup(the_lnet.ln_md_containers[cpt],
355 return lh_entry(lh, struct lnet_libmd, md_lh);
358 static inline struct lnet_libmd *
359 lnet_wire_handle2md(struct lnet_handle_wire *wh)
361 /* ALWAYS called with resource lock held */
362 struct lnet_libhandle *lh;
365 if (wh->wh_interface_cookie != the_lnet.ln_interface_cookie)
368 cpt = lnet_cpt_of_cookie(wh->wh_object_cookie);
369 lh = lnet_res_lh_lookup(the_lnet.ln_md_containers[cpt],
370 wh->wh_object_cookie);
374 return lh_entry(lh, struct lnet_libmd, md_lh);
378 lnet_peer_net_addref_locked(struct lnet_peer_net *lpn)
380 atomic_inc(&lpn->lpn_refcount);
383 extern void lnet_destroy_peer_net_locked(struct lnet_peer_net *lpn);
386 lnet_peer_net_decref_locked(struct lnet_peer_net *lpn)
388 if (atomic_dec_and_test(&lpn->lpn_refcount))
389 lnet_destroy_peer_net_locked(lpn);
393 lnet_peer_addref_locked(struct lnet_peer *lp)
395 atomic_inc(&lp->lp_refcount);
398 extern void lnet_destroy_peer_locked(struct lnet_peer *lp);
401 lnet_peer_decref_locked(struct lnet_peer *lp)
403 if (atomic_dec_and_test(&lp->lp_refcount))
404 lnet_destroy_peer_locked(lp);
408 lnet_peer_ni_addref_locked(struct lnet_peer_ni *lp)
410 kref_get(&lp->lpni_kref);
413 extern void lnet_destroy_peer_ni_locked(struct kref *ref);
416 lnet_peer_ni_decref_locked(struct lnet_peer_ni *lp)
418 kref_put(&lp->lpni_kref, lnet_destroy_peer_ni_locked);
422 lnet_isrouter(struct lnet_peer_ni *lpni)
424 return lpni->lpni_peer_net->lpn_peer->lp_rtr_refcount != 0;
428 lnet_ni_addref_locked(struct lnet_ni *ni, int cpt)
430 LASSERT(cpt >= 0 && cpt < LNET_CPT_NUMBER);
431 LASSERT(*ni->ni_refs[cpt] >= 0);
433 (*ni->ni_refs[cpt])++;
437 lnet_ni_addref(struct lnet_ni *ni)
440 lnet_ni_addref_locked(ni, 0);
445 lnet_ni_decref_locked(struct lnet_ni *ni, int cpt)
447 LASSERT(cpt >= 0 && cpt < LNET_CPT_NUMBER);
448 LASSERT(*ni->ni_refs[cpt] > 0);
450 (*ni->ni_refs[cpt])--;
454 lnet_ni_decref(struct lnet_ni *ni)
457 lnet_ni_decref_locked(ni, 0);
461 static inline struct lnet_msg *
464 struct lnet_msg *msg;
466 msg = kmem_cache_zalloc(lnet_msg_cachep, GFP_NOFS);
472 lnet_msg_free(struct lnet_msg *msg)
474 LASSERT(!msg->msg_onactivelist);
475 kmem_cache_free(lnet_msg_cachep, msg);
478 static inline struct lnet_rsp_tracker *
479 lnet_rspt_alloc(int cpt)
481 struct lnet_rsp_tracker *rspt;
483 rspt = kmem_cache_zalloc(lnet_rspt_cachep, GFP_NOFS);
486 the_lnet.ln_counters[cpt]->lct_health.lch_rst_alloc++;
487 lnet_net_unlock(cpt);
489 LIBCFS_ALLOC_POST(rspt, sizeof(*rspt), "alloc");
494 lnet_rspt_free(struct lnet_rsp_tracker *rspt, int cpt)
496 LIBCFS_FREE_PRE(rspt, sizeof(*rspt), "free");
497 kmem_cache_free(lnet_rspt_cachep, rspt);
499 the_lnet.ln_counters[cpt]->lct_health.lch_rst_alloc--;
500 lnet_net_unlock(cpt);
503 int lnet_configure(void *arg);
504 int lnet_unconfigure(void);
506 void lnet_ni_free(struct lnet_ni *ni);
507 void lnet_net_free(struct lnet_net *net);
510 lnet_net_alloc(__u32 net_type, struct list_head *netlist);
513 lnet_ni_alloc(struct lnet_net *net, struct cfs_expr_list *el,
516 lnet_ni_alloc_w_cpt_array(struct lnet_net *net, struct lnet_nid *nid,
517 u32 *cpts, u32 ncpts, char *iface);
518 int lnet_ni_add_interface(struct lnet_ni *ni, char *iface);
521 lnet_nid2peerhash(struct lnet_nid *nid)
526 for (i = 0; i < 4; i++)
527 h = cfs_hash_32(nid->nid_addr[i]^h, 32);
528 return cfs_hash_32(LNET_NID_NET(nid) ^ h, LNET_PEER_HASH_BITS);
531 static inline struct list_head *
532 lnet_net2rnethash(__u32 net)
534 return &the_lnet.ln_remote_nets_hash[(LNET_NETNUM(net) +
536 ((1U << the_lnet.ln_remote_nets_hbits) - 1)];
539 static inline void lnet_hdr_from_nid4(struct lnet_hdr *hdr,
540 const struct lnet_hdr_nid4 *vhdr)
542 const struct _lnet_hdr_nid4 *hdr_nid4 = (void *)vhdr;
544 lnet_nid4_to_nid(le64_to_cpu(hdr_nid4->dest_nid), &hdr->dest_nid);
545 lnet_nid4_to_nid(le64_to_cpu(hdr_nid4->src_nid), &hdr->src_nid);
546 hdr->dest_pid = le32_to_cpu(hdr_nid4->dest_pid);
547 hdr->src_pid = le32_to_cpu(hdr_nid4->src_pid);
548 hdr->type = le32_to_cpu(hdr_nid4->type);
549 hdr->payload_length = le32_to_cpu(hdr_nid4->payload_length);
551 hdr->msg = hdr_nid4->msg;
554 static inline void lnet_hdr_to_nid4(const struct lnet_hdr *hdr,
555 struct lnet_hdr_nid4 *vhdr)
557 struct _lnet_hdr_nid4 *hdr_nid4 = (void *)vhdr;
559 hdr_nid4->dest_nid = cpu_to_le64(lnet_nid_to_nid4(&hdr->dest_nid));
560 hdr_nid4->src_nid = cpu_to_le64(lnet_nid_to_nid4(&hdr->src_nid));
561 hdr_nid4->dest_pid = cpu_to_le32(hdr->dest_pid);
562 hdr_nid4->src_pid = cpu_to_le32(hdr->src_pid);
563 hdr_nid4->type = cpu_to_le32(hdr->type);
564 hdr_nid4->payload_length = cpu_to_le32(hdr->payload_length);
566 hdr_nid4->msg = hdr->msg;
569 static inline void lnet_hdr_from_nid16(struct lnet_hdr *hdr,
570 const struct lnet_hdr_nid16 *vhdr)
572 const struct lnet_hdr *hdr16 = (void *)vhdr;
574 hdr->dest_nid = hdr16->dest_nid;
575 hdr->src_nid = hdr16->src_nid;
576 hdr->dest_pid = le32_to_cpu(hdr16->dest_pid);
577 hdr->src_pid = le32_to_cpu(hdr16->src_pid);
578 hdr->type = le32_to_cpu(hdr16->type);
579 hdr->payload_length = le32_to_cpu(hdr16->payload_length);
581 hdr->msg = hdr16->msg;
584 static inline void lnet_hdr_to_nid16(const struct lnet_hdr *hdr,
585 struct lnet_hdr_nid16 *vhdr)
587 struct lnet_hdr *hdr16 = (void *)vhdr;
589 hdr16->dest_nid = hdr->dest_nid;
590 hdr16->src_nid = hdr->src_nid;
591 hdr16->dest_pid = cpu_to_le32(hdr->dest_pid);
592 hdr16->src_pid = cpu_to_le32(hdr->src_pid);
593 hdr16->type = cpu_to_le32(hdr->type);
594 hdr16->payload_length = cpu_to_le32(hdr->payload_length);
596 hdr16->msg = hdr->msg;
599 extern const struct lnet_lnd the_lolnd;
600 extern int avoid_asym_router_failure;
602 extern unsigned int lnet_nid_cpt_hash(struct lnet_nid *nid,
603 unsigned int number);
604 extern int lnet_cpt_of_nid_locked(struct lnet_nid *nid, struct lnet_ni *ni);
605 extern int lnet_cpt_of_nid(lnet_nid_t nid, struct lnet_ni *ni);
606 extern int lnet_nid2cpt(struct lnet_nid *nid, struct lnet_ni *ni);
607 extern struct lnet_ni *lnet_nid_to_ni_locked(struct lnet_nid *nid, int cpt);
608 extern struct lnet_ni *lnet_net2ni_locked(__u32 net, int cpt);
609 extern struct lnet_ni *lnet_net2ni_addref(__u32 net);
610 extern struct lnet_ni *lnet_nid_to_ni_addref(struct lnet_nid *nid);
611 struct lnet_net *lnet_get_net_locked(__u32 net_id);
613 int lnet_lib_init(void);
614 void lnet_lib_exit(void);
615 void lnet_router_exit(void);
617 extern unsigned int lnet_response_tracking;
618 extern unsigned lnet_transaction_timeout;
619 extern unsigned lnet_retry_count;
620 extern unsigned int lnet_lnd_timeout;
621 extern unsigned int lnet_numa_range;
622 extern unsigned int lnet_health_sensitivity;
623 extern unsigned int lnet_recovery_interval;
624 extern unsigned int lnet_recovery_limit;
625 extern unsigned int lnet_peer_discovery_disabled;
626 extern unsigned int lnet_drop_asym_route;
627 extern unsigned int lnet_max_recovery_ping_interval;
628 extern unsigned int lnet_max_recovery_ping_count;
629 extern unsigned int router_sensitivity_percentage;
630 extern int alive_router_check_interval;
631 extern int live_router_check_interval;
632 extern int dead_router_check_interval;
633 extern int portal_rotor;
634 extern int lock_prim_nid;
636 void lnet_mt_event_handler(struct lnet_event *event);
638 int lnet_notify(struct lnet_ni *ni, struct lnet_nid *peer, bool alive,
639 bool reset, time64_t when);
640 void lnet_notify_locked(struct lnet_peer_ni *lp, int notifylnd, int alive,
642 int lnet_add_route(__u32 net, __u32 hops, struct lnet_nid *gateway,
643 __u32 priority, __u32 sensitivity);
644 int lnet_del_route(__u32 net, struct lnet_nid *gw_nid);
645 void lnet_move_route(struct lnet_route *route, struct lnet_peer *lp,
646 struct list_head *rt_list);
647 void lnet_destroy_routes(void);
648 int lnet_get_route(int idx, __u32 *net, __u32 *hops,
649 lnet_nid_t *gateway, __u32 *alive, __u32 *priority,
651 int lnet_get_rtr_pool_cfg(int idx, struct lnet_ioctl_pool_cfg *pool_cfg);
652 struct lnet_ni *lnet_get_next_ni_locked(struct lnet_net *mynet,
653 struct lnet_ni *prev);
654 struct lnet_ni *lnet_get_ni_idx_locked(int idx);
655 int lnet_get_net_healthv_locked(struct lnet_net *net);
657 extern int lnet_get_peer_list(__u32 *countp, __u32 *sizep,
658 struct lnet_process_id __user *ids);
659 void lnet_peer_ni_set_healthv(struct lnet_nid *nid, int value, bool all);
660 extern void lnet_peer_ni_add_to_recoveryq_locked(struct lnet_peer_ni *lpni,
661 struct list_head *queue,
663 extern int lnet_peer_add_pref_nid(struct lnet_peer_ni *lpni,
664 struct lnet_nid *nid);
665 extern void lnet_peer_clr_pref_nids(struct lnet_peer_ni *lpni);
666 extern int lnet_peer_del_pref_nid(struct lnet_peer_ni *lpni,
667 struct lnet_nid *nid);
668 void lnet_peer_ni_set_selection_priority(struct lnet_peer_ni *lpni,
670 extern void lnet_ni_add_to_recoveryq_locked(struct lnet_ni *ni,
671 struct list_head *queue,
674 void lnet_router_debugfs_init(void);
675 void lnet_router_debugfs_fini(void);
676 int lnet_rtrpools_alloc(int im_a_router);
677 void lnet_destroy_rtrbuf(struct lnet_rtrbuf *rb, int npages);
678 int lnet_rtrpools_adjust(int tiny, int small, int large);
679 int lnet_rtrpools_enable(void);
680 void lnet_rtrpools_disable(void);
681 void lnet_rtrpools_free(int keep_pools);
682 void lnet_rtr_transfer_to_peer(struct lnet_peer *src,
683 struct lnet_peer *target);
684 struct lnet_remotenet *lnet_find_rnet_locked(__u32 net);
685 int lnet_dyn_add_net(struct lnet_ioctl_config_data *conf);
686 int lnet_dyn_del_net(__u32 net);
687 int lnet_dyn_add_ni(struct lnet_ioctl_config_ni *conf, u32 net,
688 struct lnet_nid *nid,
689 struct lnet_ioctl_config_lnd_tunables *tun);
690 int lnet_dyn_del_ni(struct lnet_nid *nid);
691 int lnet_clear_lazy_portal(struct lnet_ni *ni, int portal, char *reason);
692 struct lnet_net *lnet_get_net_locked(__u32 net_id);
693 void lnet_net_clr_pref_rtrs(struct lnet_net *net);
694 int lnet_net_add_pref_rtr(struct lnet_net *net, struct lnet_nid *gw_nid);
696 int lnet_islocalnid(struct lnet_nid *nid);
697 int lnet_islocalnet(__u32 net);
698 int lnet_islocalnet_locked(__u32 net);
700 void lnet_msg_attach_md(struct lnet_msg *msg, struct lnet_libmd *md,
701 unsigned int offset, unsigned int mlen);
702 void lnet_build_unlink_event(struct lnet_libmd *md, struct lnet_event *ev);
703 void lnet_build_msg_event(struct lnet_msg *msg, enum lnet_event_kind ev_type);
704 void lnet_msg_commit(struct lnet_msg *msg, int cpt);
705 void lnet_msg_decommit(struct lnet_msg *msg, int cpt, int status);
707 void lnet_prep_send(struct lnet_msg *msg, int type,
708 struct lnet_processid *target, unsigned int offset,
710 int lnet_send(struct lnet_nid *nid, struct lnet_msg *msg,
711 struct lnet_nid *rtr_nid);
712 int lnet_send_ping(struct lnet_nid *dest_nid, struct lnet_handle_md *mdh,
713 int bytes, void *user_ptr, lnet_handler_t handler,
715 void lnet_return_tx_credits_locked(struct lnet_msg *msg);
716 void lnet_return_rx_credits_locked(struct lnet_msg *msg);
717 void lnet_schedule_blocked_locked(struct lnet_rtrbufpool *rbp);
718 void lnet_drop_routed_msgs_locked(struct list_head *list, int cpt);
720 struct list_head **lnet_create_array_of_queues(void);
722 /* portals functions */
723 /* portals attributes */
725 lnet_ptl_is_lazy(struct lnet_portal *ptl)
727 return !!(ptl->ptl_options & LNET_PTL_LAZY);
731 lnet_ptl_is_unique(struct lnet_portal *ptl)
733 return !!(ptl->ptl_options & LNET_PTL_MATCH_UNIQUE);
737 lnet_ptl_is_wildcard(struct lnet_portal *ptl)
739 return !!(ptl->ptl_options & LNET_PTL_MATCH_WILDCARD);
743 lnet_ptl_setopt(struct lnet_portal *ptl, int opt)
745 ptl->ptl_options |= opt;
749 lnet_ptl_unsetopt(struct lnet_portal *ptl, int opt)
751 ptl->ptl_options &= ~opt;
754 /* match-table functions */
755 struct list_head *lnet_mt_match_head(struct lnet_match_table *mtable,
756 struct lnet_processid *id, __u64 mbits);
757 struct lnet_match_table *lnet_mt_of_attach(unsigned int index,
758 struct lnet_processid *id,
759 __u64 mbits, __u64 ignore_bits,
760 enum lnet_ins_pos pos);
761 int lnet_mt_match_md(struct lnet_match_table *mtable,
762 struct lnet_match_info *info, struct lnet_msg *msg);
764 /* portals match/attach functions */
765 void lnet_ptl_attach_md(struct lnet_me *me, struct lnet_libmd *md,
766 struct list_head *matches, struct list_head *drops);
767 void lnet_ptl_detach_md(struct lnet_me *me, struct lnet_libmd *md);
768 int lnet_ptl_match_md(struct lnet_match_info *info, struct lnet_msg *msg);
770 /* initialized and finalize portals */
771 int lnet_portals_create(void);
772 void lnet_portals_destroy(void);
774 /* message functions */
775 int lnet_parse(struct lnet_ni *ni, struct lnet_hdr *hdr,
776 struct lnet_nid *fromnid, void *private, int rdma_req);
777 int lnet_parse_local(struct lnet_ni *ni, struct lnet_msg *msg);
778 int lnet_parse_forward_locked(struct lnet_ni *ni, struct lnet_msg *msg);
780 void lnet_recv(struct lnet_ni *ni, void *private, struct lnet_msg *msg,
781 int delayed, unsigned int offset, unsigned int mlen,
783 void lnet_ni_recv(struct lnet_ni *ni, void *private, struct lnet_msg *msg,
784 int delayed, unsigned int offset,
785 unsigned int mlen, unsigned int rlen);
786 void lnet_ni_send(struct lnet_ni *ni, struct lnet_msg *msg);
788 struct lnet_msg *lnet_create_reply_msg(struct lnet_ni *ni,
789 struct lnet_msg *get_msg);
790 void lnet_set_reply_msg_len(struct lnet_ni *ni, struct lnet_msg *msg,
792 void lnet_detach_rsp_tracker(struct lnet_libmd *md, int cpt);
793 void lnet_clean_zombie_rstqs(void);
795 bool lnet_md_discarded(struct lnet_libmd *md);
796 void lnet_finalize(struct lnet_msg *msg, int rc);
797 bool lnet_send_error_simulation(struct lnet_msg *msg,
798 enum lnet_msg_hstatus *hstatus);
799 void lnet_handle_remote_failure_locked(struct lnet_peer_ni *lpni);
801 void lnet_drop_message(struct lnet_ni *ni, int cpt, void *private,
802 unsigned int nob, __u32 msg_type);
803 void lnet_drop_delayed_msg_list(struct list_head *head, char *reason);
804 void lnet_recv_delayed_msg_list(struct list_head *head);
806 int lnet_msg_container_setup(struct lnet_msg_container *container, int cpt);
807 void lnet_msg_container_cleanup(struct lnet_msg_container *container);
808 void lnet_msg_containers_destroy(void);
809 int lnet_msg_containers_create(void);
811 char *lnet_health_error2str(enum lnet_msg_hstatus hstatus);
812 char *lnet_msgtyp2str(int type);
813 int lnet_fail_nid(lnet_nid_t nid, unsigned int threshold);
815 /** \addtogroup lnet_fault_simulation @{ */
817 /* See struct lnet_fault_attr4 for a description of these fields */
818 struct lnet_fault_large_attr {
819 struct lnet_nid fa_src;
820 struct lnet_nid fa_dst;
821 struct lnet_nid fa_local_nid;
828 u32 da_health_error_mask;
840 int lnet_fault_ctl(int cmd, struct libcfs_ioctl_data *data);
841 int lnet_fault_init(void);
842 void lnet_fault_fini(void);
844 bool lnet_drop_rule_match(struct lnet_hdr *hdr, struct lnet_nid *local_nid,
845 enum lnet_msg_hstatus *hstatus);
847 int lnet_delay_rule_add(struct lnet_fault_large_attr *attr);
848 int lnet_delay_rule_del(struct lnet_nid *src, struct lnet_nid *dst,
850 int lnet_delay_rule_list(int pos, struct lnet_fault_large_attr *attr,
851 struct lnet_fault_stat *stat);
852 void lnet_delay_rule_reset(void);
853 void lnet_delay_rule_check(void);
854 bool lnet_delay_rule_match_locked(struct lnet_hdr *hdr, struct lnet_msg *msg);
856 /** @} lnet_fault_simulation */
858 void lnet_counters_get_common(struct lnet_counters_common *common);
859 int lnet_counters_get(struct lnet_counters *counters);
860 void lnet_counters_reset(void);
862 lnet_ni_set_sel_priority_locked(struct lnet_ni *ni, __u32 priority)
864 ni->ni_sel_priority = priority;
868 lnet_net_set_sel_priority_locked(struct lnet_net *net, __u32 priority)
870 net->net_sel_priority = priority;
873 unsigned int lnet_iov_nob(unsigned int niov, struct kvec *iov);
874 unsigned int lnet_kiov_nob(unsigned int niov, struct bio_vec *iov);
875 int lnet_extract_kiov(int dst_niov, struct bio_vec *dst,
876 int src_niov, struct bio_vec *src,
877 unsigned int offset, unsigned int len);
879 void lnet_copy_iov2iov(unsigned int ndiov, struct kvec *diov,
880 unsigned int doffset,
881 unsigned int nsiov, struct kvec *siov,
882 unsigned int soffset, unsigned int nob);
883 void lnet_copy_kiov2iov(unsigned int niov, struct kvec *iov,
884 unsigned int iovoffset,
885 unsigned int nkiov, struct bio_vec *kiov,
886 unsigned int kiovoffset, unsigned int nob);
887 void lnet_copy_iov2kiov(unsigned int nkiov, struct bio_vec *kiov,
888 unsigned int kiovoffset,
889 unsigned int niov, struct kvec *iov,
890 unsigned int iovoffset, unsigned int nob);
891 void lnet_copy_kiov2kiov(unsigned int ndkiov, struct bio_vec *dkiov,
892 unsigned int doffset,
893 unsigned int nskiov, struct bio_vec *skiov,
894 unsigned int soffset, unsigned int nob);
897 lnet_copy_kiov2flat(int dlen, void *dest, unsigned int doffset,
898 unsigned int nsiov, struct bio_vec *skiov,
899 unsigned int soffset, unsigned int nob)
901 struct kvec diov = { .iov_base = dest, .iov_len = dlen };
903 lnet_copy_kiov2iov(1, &diov, doffset,
904 nsiov, skiov, soffset, nob);
908 lnet_copy_flat2kiov(unsigned int ndiov, struct bio_vec *dkiov,
909 unsigned int doffset, int slen, void *src,
910 unsigned int soffset, unsigned int nob)
912 struct kvec siov = { .iov_base = src, .iov_len = slen };
913 lnet_copy_iov2kiov(ndiov, dkiov, doffset,
914 1, &siov, soffset, nob);
917 void lnet_me_unlink(struct lnet_me *me);
919 void lnet_md_unlink(struct lnet_libmd *md);
920 void lnet_md_deconstruct(struct lnet_libmd *lmd, struct lnet_event *ev);
921 struct page *lnet_get_first_page(struct lnet_libmd *md, unsigned int offset);
922 int lnet_cpt_of_md(struct lnet_libmd *md, unsigned int offset);
924 unsigned int lnet_get_lnd_timeout(void);
925 void lnet_register_lnd(const struct lnet_lnd *lnd);
926 void lnet_unregister_lnd(const struct lnet_lnd *lnd);
928 struct socket *lnet_connect(struct lnet_nid *peer_nid, int interface,
929 struct sockaddr *peeraddr, struct net *ns);
930 void lnet_connect_console_error(int rc, struct lnet_nid *peer_nid,
931 struct sockaddr *sa);
932 int lnet_count_acceptor_nets(void);
933 int lnet_acceptor_timeout(void);
934 int lnet_acceptor_port(void);
935 int lnet_acceptor_start(void);
936 void lnet_acceptor_stop(void);
938 struct lnet_inetdev {
950 char li_name[IFNAMSIZ];
953 int lnet_inet_enumerate(struct lnet_inetdev **dev_list, struct net *ns,
955 int lnet_inet_select(struct lnet_ni *ni, struct lnet_inetdev *ifaces,
958 void lnet_sock_setbuf(struct socket *socket, int txbufsize, int rxbufsize);
959 void lnet_sock_getbuf(struct socket *socket, int *txbufsize, int *rxbufsize);
960 int lnet_sock_getaddr(struct socket *socket, bool remote,
961 struct sockaddr_storage *peer);
962 int lnet_sock_write(struct socket *sock, void *buffer, int nob, int timeout);
963 int lnet_sock_read(struct socket *sock, void *buffer, int nob, int timeout);
965 struct socket *lnet_sock_listen(int port, int backlog,
967 struct socket *lnet_sock_connect(int interface, int local_port,
968 struct sockaddr *peeraddr,
971 int lnet_peers_start_down(void);
972 int lnet_peer_buffer_credits(struct lnet_net *net);
973 void lnet_consolidate_routes_locked(struct lnet_peer *orig_lp,
974 struct lnet_peer *new_lp);
975 void lnet_router_discovery_complete(struct lnet_peer *lp);
976 void lnet_router_discovery_ping_reply(struct lnet_peer *lp,
977 struct lnet_ping_buffer *pbuf);
979 int lnet_monitor_thr_start(void);
980 void lnet_monitor_thr_stop(void);
982 bool lnet_router_checker_active(void);
983 void lnet_check_routers(void);
984 void lnet_wait_router_start(void);
985 void lnet_swap_pinginfo(struct lnet_ping_buffer *pbuf);
987 int lnet_ping_info_validate(struct lnet_ping_info *pinfo);
988 struct lnet_ping_buffer *lnet_ping_buffer_alloc(int bytes, gfp_t gfp);
989 void lnet_ping_buffer_free(struct lnet_ping_buffer *pbuf);
990 int lnet_get_link_status(struct net_device *dev);
991 __u32 lnet_set_link_fatal_state(struct lnet_ni *ni, unsigned int link_state);
993 static inline void lnet_ping_buffer_addref(struct lnet_ping_buffer *pbuf)
995 atomic_inc(&pbuf->pb_refcnt);
998 static inline void lnet_ping_buffer_decref(struct lnet_ping_buffer *pbuf)
1000 if (atomic_dec_and_test(&pbuf->pb_refcnt)) {
1001 wake_up_var(&pbuf->pb_refcnt);
1002 lnet_ping_buffer_free(pbuf);
1006 struct lnet_ping_iter {
1007 struct lnet_ping_info *pinfo;
1011 u32 *ping_iter_first(struct lnet_ping_iter *pi, struct lnet_ping_buffer *pbuf,
1012 struct lnet_nid *nid);
1013 u32 *ping_iter_next(struct lnet_ping_iter *pi, struct lnet_nid *nid);
1014 int ping_info_count_entries(struct lnet_ping_buffer *pbuf);
1016 static inline int lnet_push_target_resize_needed(void)
1018 return the_lnet.ln_push_target->pb_nbytes < the_lnet.ln_push_target_nbytes;
1021 int lnet_push_target_resize(void);
1022 int lnet_push_target_post(struct lnet_ping_buffer *pbuf,
1023 struct lnet_handle_md *mdh);
1024 void lnet_peer_push_event(struct lnet_event *ev);
1026 int lnet_parse_ip2nets(const char **networksp, const char *ip2nets);
1027 int lnet_parse_routes(const char *route_str, int *im_a_router);
1028 int lnet_parse_networks(struct list_head *nilist, const char *networks);
1029 bool lnet_net_unique(__u32 net_id, struct list_head *nilist,
1030 struct lnet_net **net);
1031 bool lnet_ni_unique_net(struct list_head *nilist, char *iface);
1032 void lnet_incr_dlc_seq(void);
1033 __u32 lnet_get_dlc_seq_locked(void);
1035 struct lnet_peer_net *lnet_get_next_peer_net_locked(struct lnet_peer *lp,
1037 struct lnet_peer_ni *lnet_get_next_peer_ni_locked(struct lnet_peer *peer,
1038 struct lnet_peer_net *peer_net,
1039 struct lnet_peer_ni *prev);
1040 struct lnet_peer_ni *lnet_peerni_by_nid_locked(struct lnet_nid *nid,
1041 struct lnet_nid *pref,
1043 struct lnet_peer_ni *lnet_nid2peerni_ex(struct lnet_nid *nid);
1044 struct lnet_peer_ni *lnet_peer_ni_get_locked(struct lnet_peer *lp,
1045 struct lnet_nid *nid);
1046 struct lnet_peer_ni *lnet_peer_ni_find_locked(struct lnet_nid *nid);
1047 struct lnet_peer *lnet_find_peer(struct lnet_nid *nid);
1048 void lnet_peer_net_added(struct lnet_net *net);
1049 void lnet_peer_primary_nid_locked(struct lnet_nid *nid,
1050 struct lnet_nid *result);
1051 int lnet_discover_peer_locked(struct lnet_peer_ni *lpni, int cpt, bool block);
1052 void lnet_peer_queue_message(struct lnet_peer *lp, struct lnet_msg *msg);
1053 int lnet_peer_discovery_start(void);
1054 void lnet_peer_discovery_stop(void);
1055 void lnet_push_update_to_peers(int force);
1056 void lnet_peer_tables_cleanup(struct lnet_net *net);
1057 void lnet_peer_uninit(void);
1058 int lnet_peer_tables_create(void);
1059 void lnet_debug_peer(struct lnet_nid *nid);
1060 struct lnet_peer_net *lnet_peer_get_net_locked(struct lnet_peer *peer,
1062 bool lnet_peer_is_pref_nid_locked(struct lnet_peer_ni *lpni,
1063 struct lnet_nid *nid);
1064 int lnet_peer_add_pref_nid(struct lnet_peer_ni *lpni, struct lnet_nid *nid);
1065 void lnet_peer_clr_pref_nids(struct lnet_peer_ni *lpni);
1066 bool lnet_peer_is_pref_rtr_locked(struct lnet_peer_ni *lpni,
1067 struct lnet_nid *gw_nid);
1068 void lnet_peer_clr_pref_rtrs(struct lnet_peer_ni *lpni);
1069 int lnet_peer_add_pref_rtr(struct lnet_peer_ni *lpni, struct lnet_nid *nid);
1070 int lnet_peer_ni_set_non_mr_pref_nid(struct lnet_peer_ni *lpni,
1071 struct lnet_nid *nid);
1072 int lnet_user_add_peer_ni(struct lnet_nid *key_nid, struct lnet_nid *nid,
1073 bool mr, bool lock_prim);
1074 int lnet_del_peer_ni(struct lnet_nid *key_nid, struct lnet_nid *nid,
1076 int lnet_get_peer_info(struct lnet_ioctl_peer_cfg *cfg, void __user *bulk);
1077 int lnet_get_peer_ni_info(__u32 peer_index, __u64 *nid,
1078 char alivness[LNET_MAX_STR_LEN],
1079 __u32 *cpt_iter, __u32 *refcount,
1080 __u32 *ni_peer_tx_credits, __u32 *peer_tx_credits,
1081 __u32 *peer_rtr_credits, __u32 *peer_min_rtr_credtis,
1082 __u32 *peer_tx_qnob);
1083 int lnet_get_peer_ni_hstats(struct lnet_ioctl_peer_ni_hstats *stats);
1086 lnet_peer_net_set_sel_priority_locked(struct lnet_peer_net *lpn, __u32 priority)
1088 lpn->lpn_sel_priority = priority;
1092 static inline struct lnet_peer_net *
1093 lnet_find_peer_net_locked(struct lnet_peer *peer, __u32 net_id)
1095 struct lnet_peer_net *peer_net;
1097 list_for_each_entry(peer_net, &peer->lp_peer_nets, lpn_peer_nets) {
1098 if (peer_net->lpn_net_id == net_id)
1106 lnet_peer_is_multi_rail(struct lnet_peer *lp)
1108 if (lp->lp_state & LNET_PEER_MULTI_RAIL)
1114 lnet_peer_ni_is_configured(struct lnet_peer_ni *lpni)
1116 if (lpni->lpni_peer_net->lpn_peer->lp_state & LNET_PEER_CONFIGURED)
1122 lnet_peer_ni_is_primary(struct lnet_peer_ni *lpni)
1124 return nid_same(&lpni->lpni_nid,
1125 &lpni->lpni_peer_net->lpn_peer->lp_primary_nid);
1128 bool lnet_peer_is_uptodate(struct lnet_peer *lp);
1129 bool lnet_peer_is_uptodate_locked(struct lnet_peer *lp);
1130 bool lnet_is_discovery_disabled(struct lnet_peer *lp);
1131 bool lnet_is_discovery_disabled_locked(struct lnet_peer *lp);
1132 bool lnet_peer_gw_discovery(struct lnet_peer *lp);
1135 lnet_peer_needs_push(struct lnet_peer *lp)
1137 if (!(lp->lp_state & LNET_PEER_MULTI_RAIL))
1139 if (lp->lp_state & LNET_PEER_MARK_DELETED)
1141 if (lp->lp_state & LNET_PEER_FORCE_PUSH)
1143 if (lp->lp_state & LNET_PEER_NO_DISCOVERY)
1145 /* if discovery is not enabled then no need to push */
1146 if (lnet_peer_discovery_disabled)
1148 if (lp->lp_node_seqno < atomic_read(&the_lnet.ln_ping_target_seqno))
1153 static inline unsigned int
1154 lnet_get_next_recovery_ping(unsigned int ping_count, time64_t now)
1156 unsigned int interval;
1158 /* lnet_max_recovery_interval <= 2^lnet_max_recovery_ping_count */
1159 if (ping_count > lnet_max_recovery_ping_count)
1160 interval = lnet_max_recovery_ping_interval;
1162 interval = 1 << ping_count;
1164 return now + interval;
1168 lnet_peer_ni_set_next_ping(struct lnet_peer_ni *lpni, time64_t now)
1170 lpni->lpni_next_ping =
1171 lnet_get_next_recovery_ping(lpni->lpni_ping_count, now);
1175 lnet_ni_set_next_ping(struct lnet_ni *ni, time64_t now)
1177 ni->ni_next_ping = lnet_get_next_recovery_ping(ni->ni_ping_count, now);
1181 * A peer NI is alive if it satisfies the following two conditions:
1182 * 1. peer NI health >= LNET_MAX_HEALTH_VALUE * router_sensitivity_percentage
1183 * 2. the cached NI status received when we discover the peer is UP
1186 lnet_is_peer_ni_alive(struct lnet_peer_ni *lpni)
1188 bool halive = false;
1190 halive = (atomic_read(&lpni->lpni_healthv) >=
1191 (LNET_MAX_HEALTH_VALUE * router_sensitivity_percentage / 100));
1193 return halive && lpni->lpni_ns_status == LNET_NI_STATUS_UP;
1197 lnet_update_peer_net_healthv(struct lnet_peer_ni *lpni)
1199 struct lnet_peer_net *lpn;
1200 int best_healthv = 0;
1202 lpn = lpni->lpni_peer_net;
1204 list_for_each_entry(lpni, &lpn->lpn_peer_nis, lpni_peer_nis) {
1205 int lpni_healthv = atomic_read(&lpni->lpni_healthv);
1206 if (best_healthv < lpni_healthv)
1207 best_healthv = lpni_healthv;
1210 lpn->lpn_healthv = best_healthv;
1214 lnet_set_lpni_healthv_locked(struct lnet_peer_ni *lpni, int value)
1216 if (atomic_read(&lpni->lpni_healthv) == value)
1218 atomic_set(&lpni->lpni_healthv, value);
1219 lnet_update_peer_net_healthv(lpni);
1223 lnet_atomic_add_unless_max(atomic_t *v, int a, int u)
1225 int c = atomic_read(v);
1238 old = atomic_cmpxchg(v, c, m);
1254 lnet_dec_healthv_locked(atomic_t *healthv, int sensitivity)
1256 int h = atomic_read(healthv);
1261 if (h < sensitivity)
1266 return (atomic_xchg(healthv, h) != h);
1270 lnet_dec_lpni_healthv_locked(struct lnet_peer_ni *lpni)
1272 /* If there is a health sensitivity in the peer then use that
1273 * instead of the globally set one.
1274 * only adjust the net health if the lpni health value changed
1276 if (lnet_dec_healthv_locked(&lpni->lpni_healthv,
1277 lpni->lpni_peer_net->lpn_peer->lp_health_sensitivity ? :
1278 lnet_health_sensitivity)) {
1279 lnet_update_peer_net_healthv(lpni);
1284 lnet_inc_lpni_healthv_locked(struct lnet_peer_ni *lpni)
1286 /* If there is a health sensitivity in the peer then use that
1287 * instead of the globally set one.
1288 * only adjust the net health if the lpni health value changed
1290 if (lnet_atomic_add_unless_max(&lpni->lpni_healthv,
1291 lpni->lpni_peer_net->lpn_peer->lp_health_sensitivity ? :
1292 lnet_health_sensitivity,
1293 LNET_MAX_HEALTH_VALUE)) {
1294 lnet_update_peer_net_healthv(lpni);
1299 lnet_inc_healthv(atomic_t *healthv, int value)
1301 lnet_atomic_add_unless_max(healthv, value, LNET_MAX_HEALTH_VALUE);
1305 lnet_get_list_len(struct list_head *list)
1307 struct list_head *l;
1310 list_for_each(l, list)
1316 void lnet_incr_stats(struct lnet_element_stats *stats,
1317 enum lnet_msg_type msg_type,
1318 enum lnet_stats_type stats_type);
1320 __u32 lnet_sum_stats(struct lnet_element_stats *stats,
1321 enum lnet_stats_type stats_type);
1323 void lnet_usr_translate_stats(struct lnet_ioctl_element_msg_stats *msg_stats,
1324 struct lnet_element_stats *stats);
1326 lnet_set_route_aliveness(struct lnet_route *route, bool alive)
1328 bool old = atomic_xchg(&route->lr_alive, alive);
1331 CERROR("route to %s through %s has gone from %s to %s\n",
1332 libcfs_net2str(route->lr_net),
1333 libcfs_nidstr(&route->lr_gateway->lp_primary_nid),
1334 old ? "up" : "down",
1335 alive ? "up" : "down");
1338 extern struct blocking_notifier_head lnet_ioctl_list;
1339 static inline int notifier_from_ioctl_errno(int err)
1343 return notifier_from_errno(err) | NOTIFY_STOP_MASK;
1346 void lnet_mark_ping_buffer_for_update(void);
1347 void lnet_queue_ping_buffer_update(void);