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
42 #include <linux/netdevice.h>
44 #include <libcfs/libcfs.h>
46 #include <lnet/lib-types.h>
47 #include <uapi/linux/lnet/lnet-dlc.h>
48 #include <uapi/linux/lnet/lnet-types.h>
49 #include <uapi/linux/lnet/lnetctl.h>
50 #include <uapi/linux/lnet/nidstr.h>
54 extern struct lnet the_lnet; /* THE network */
56 #if (BITS_PER_LONG == 32)
57 /* 2 CPTs, allowing more CPTs might make us under memory pressure */
58 # define LNET_CPT_MAX_BITS 1
60 #else /* 64-bit system */
62 * 256 CPTs for thousands of CPUs, allowing more CPTs might make us
63 * under risk of consuming all lh_cookie.
65 # define LNET_CPT_MAX_BITS 8
66 #endif /* BITS_PER_LONG == 32 */
68 /* max allowed CPT number */
69 #define LNET_CPT_MAX (1 << LNET_CPT_MAX_BITS)
71 #define LNET_CPT_NUMBER (the_lnet.ln_cpt_number)
72 #define LNET_CPT_BITS (the_lnet.ln_cpt_bits)
73 #define LNET_CPT_MASK ((1ULL << LNET_CPT_BITS) - 1)
76 #define LNET_LOCK_EX CFS_PERCPT_LOCK_EX
78 /* need both kernel and user-land acceptor */
79 #define LNET_ACCEPTOR_MIN_RESERVED_PORT 512
80 #define LNET_ACCEPTOR_MAX_RESERVED_PORT 1023
82 /* default timeout and credits */
83 #define DEFAULT_PEER_TIMEOUT 180
84 #define DEFAULT_PEER_CREDITS 8
85 #define DEFAULT_CREDITS 256
87 /* default number of connections per peer */
88 #define DEFAULT_CONNS_PER_PEER 0
90 #ifdef HAVE_KERN_SOCK_GETNAME_2ARGS
91 #define lnet_kernel_getpeername(sock, addr, addrlen) \
92 kernel_getpeername(sock, addr)
93 #define lnet_kernel_getsockname(sock, addr, addrlen) \
94 kernel_getsockname(sock, addr)
96 #define lnet_kernel_getpeername(sock, addr, addrlen) \
97 kernel_getpeername(sock, addr, addrlen)
98 #define lnet_kernel_getsockname(sock, addr, addrlen) \
99 kernel_getsockname(sock, addr, addrlen)
103 * kernel 5.3: commit ef11db3310e272d3d8dbe8739e0770820dd20e52
104 * kernel 4.18.0-193.el8:
105 * added in_dev_for_each_ifa_rtnl and in_dev_for_each_ifa_rcu
106 * and removed for_ifa and endfor_ifa.
107 * Use the _rntl variant as the current locking is rtnl.
109 #ifdef HAVE_IN_DEV_FOR_EACH_IFA_RTNL
110 #define DECLARE_CONST_IN_IFADDR(ifa) const struct in_ifaddr *ifa
111 #define endfor_ifa(in_dev)
113 #define DECLARE_CONST_IN_IFADDR(ifa)
114 #define in_dev_for_each_ifa_rtnl(ifa, in_dev) for_ifa((in_dev))
115 #define in_dev_for_each_ifa_rcu(ifa, in_dev) for_ifa((in_dev))
119 # if defined(__GNUC__) && __GNUC__ >= 7
120 # define fallthrough __attribute__((fallthrough)) /* fallthrough */
122 # define fallthrough do {} while (0) /* fallthrough */
126 int choose_ipv4_src(__u32 *ret,
127 int interface, __u32 dst_ipaddr, struct net *ns);
129 bool lnet_is_route_alive(struct lnet_route *route);
130 bool lnet_is_gateway_alive(struct lnet_peer *gw);
132 static inline int lnet_is_wire_handle_none(struct lnet_handle_wire *wh)
134 return (wh->wh_interface_cookie == LNET_WIRE_HANDLE_COOKIE_NONE &&
135 wh->wh_object_cookie == LNET_WIRE_HANDLE_COOKIE_NONE);
138 static inline int lnet_md_exhausted(struct lnet_libmd *md)
140 return (md->md_threshold == 0 ||
141 ((md->md_options & LNET_MD_MAX_SIZE) != 0 &&
142 md->md_offset + md->md_max_size > md->md_length));
145 static inline int lnet_md_unlinkable(struct lnet_libmd *md)
147 /* Should unlink md when its refcount is 0 and either:
148 * - md has been flagged for deletion (by auto unlink or LNetM[DE]Unlink,
149 * in the latter case md may not be exhausted).
150 * - auto unlink is on and md is exhausted.
152 if (md->md_refcount != 0)
155 if ((md->md_flags & LNET_MD_FLAG_ZOMBIE) != 0)
158 return ((md->md_flags & LNET_MD_FLAG_AUTO_UNLINK) != 0 &&
159 lnet_md_exhausted(md));
162 #define lnet_cpt_table() (the_lnet.ln_cpt_table)
163 #define lnet_cpt_current() cfs_cpt_current(the_lnet.ln_cpt_table, 1)
166 lnet_cpt_of_cookie(__u64 cookie)
168 unsigned int cpt = (cookie >> LNET_COOKIE_TYPE_BITS) & LNET_CPT_MASK;
170 /* LNET_CPT_NUMBER doesn't have to be power2, which means we can
171 * get illegal cpt from it's invalid cookie */
172 return cpt < LNET_CPT_NUMBER ? cpt : cpt % LNET_CPT_NUMBER;
176 lnet_res_lock(int cpt)
178 cfs_percpt_lock(the_lnet.ln_res_lock, cpt);
182 lnet_res_unlock(int cpt)
184 cfs_percpt_unlock(the_lnet.ln_res_lock, cpt);
188 lnet_res_lock_current(void)
190 int cpt = lnet_cpt_current();
197 lnet_net_lock(int cpt)
199 cfs_percpt_lock(the_lnet.ln_net_lock, cpt);
203 lnet_net_unlock(int cpt)
205 cfs_percpt_unlock(the_lnet.ln_net_lock, cpt);
209 lnet_net_lock_current(void)
211 int cpt = lnet_cpt_current();
217 #define LNET_LOCK() lnet_net_lock(LNET_LOCK_EX)
218 #define LNET_UNLOCK() lnet_net_unlock(LNET_LOCK_EX)
220 #define lnet_ptl_lock(ptl) spin_lock(&(ptl)->ptl_lock)
221 #define lnet_ptl_unlock(ptl) spin_unlock(&(ptl)->ptl_lock)
222 #define lnet_ni_lock(ni) spin_lock(&(ni)->ni_lock)
223 #define lnet_ni_unlock(ni) spin_unlock(&(ni)->ni_lock)
225 #define MAX_PORTALS 64
227 #define LNET_SMALL_MD_SIZE offsetof(struct lnet_libmd, md_kiov[1])
228 extern struct kmem_cache *lnet_mes_cachep; /* MEs kmem_cache */
229 extern struct kmem_cache *lnet_small_mds_cachep; /* <= LNET_SMALL_MD_SIZE bytes
231 extern struct kmem_cache *lnet_udsp_cachep;
232 extern struct kmem_cache *lnet_rspt_cachep;
233 extern struct kmem_cache *lnet_msg_cachep;
236 lnet_ni_set_status_locked(struct lnet_ni *ni, __u32 status)
237 __must_hold(&ni->ni_lock)
241 if (ni->ni_status && *ni->ni_status != status) {
242 CDEBUG(D_NET, "ni %s status changed from %#x to %#x\n",
243 libcfs_nidstr(&ni->ni_nid),
244 *ni->ni_status, status);
245 *ni->ni_status = status;
252 static inline unsigned int
253 lnet_ni_get_status_locked(struct lnet_ni *ni)
254 __must_hold(&ni->ni_lock)
256 if (nid_is_lo0(&ni->ni_nid))
257 return LNET_NI_STATUS_UP;
258 else if (atomic_read(&ni->ni_fatal_error_on))
259 return LNET_NI_STATUS_DOWN;
260 else if (the_lnet.ln_routing && ni->ni_status)
261 return *ni->ni_status;
263 return LNET_NI_STATUS_UP;
267 lnet_ni_set_status(struct lnet_ni *ni, __u32 status)
272 update = lnet_ni_set_status_locked(ni, status);
278 static inline void lnet_md_wait_handling(struct lnet_libmd *md, int cpt)
280 wait_queue_head_t *wq = __var_waitqueue(md);
281 #if defined(HAVE_WAIT_BIT_QUEUE_ENTRY) || !defined(HAVE_WAIT_VAR_EVENT)
282 struct wait_bit_queue_entry entry;
283 wait_queue_entry_t *wqe = &entry.wq_entry;
285 struct wait_bit_queue entry;
286 wait_queue_entry_t *wqe = &entry.wait;
288 init_wait_var_entry(&entry, md, 0);
289 prepare_to_wait_event(wq, wqe, TASK_IDLE);
290 if (md->md_flags & LNET_MD_FLAG_HANDLING) {
291 /* Race with unlocked call to ->md_handler.
292 * It is safe to drop the res_lock here as the
293 * caller has only just claimed it.
295 lnet_res_unlock(cpt);
297 /* Cannot check md now, it might be freed. Caller
298 * must reclaim reference and check.
302 finish_wait(wq, wqe);
306 lnet_md_free(struct lnet_libmd *md)
310 LASSERTF(md->md_rspt_ptr == NULL, "md %p rsp %p\n", md, md->md_rspt_ptr);
312 size = offsetof(struct lnet_libmd, md_kiov[md->md_niov]);
314 if (size <= LNET_SMALL_MD_SIZE) {
315 LIBCFS_MEM_MSG(md, size, "slab-freed");
316 kmem_cache_free(lnet_small_mds_cachep, md);
318 LIBCFS_FREE(md, size);
322 struct lnet_libhandle *lnet_res_lh_lookup(struct lnet_res_container *rec,
324 void lnet_res_lh_initialize(struct lnet_res_container *rec,
325 struct lnet_libhandle *lh);
327 lnet_res_lh_invalidate(struct lnet_libhandle *lh)
329 /* ALWAYS called with resource lock held */
330 /* NB: cookie is still useful, don't reset it */
331 list_del(&lh->lh_hash_chain);
335 lnet_md2handle(struct lnet_handle_md *handle, struct lnet_libmd *md)
337 handle->cookie = md->md_lh.lh_cookie;
340 static inline struct lnet_libmd *
341 lnet_handle2md(struct lnet_handle_md *handle)
343 /* ALWAYS called with resource lock held */
344 struct lnet_libhandle *lh;
347 cpt = lnet_cpt_of_cookie(handle->cookie);
348 lh = lnet_res_lh_lookup(the_lnet.ln_md_containers[cpt],
353 return lh_entry(lh, struct lnet_libmd, md_lh);
356 static inline struct lnet_libmd *
357 lnet_wire_handle2md(struct lnet_handle_wire *wh)
359 /* ALWAYS called with resource lock held */
360 struct lnet_libhandle *lh;
363 if (wh->wh_interface_cookie != the_lnet.ln_interface_cookie)
366 cpt = lnet_cpt_of_cookie(wh->wh_object_cookie);
367 lh = lnet_res_lh_lookup(the_lnet.ln_md_containers[cpt],
368 wh->wh_object_cookie);
372 return lh_entry(lh, struct lnet_libmd, md_lh);
376 lnet_peer_net_addref_locked(struct lnet_peer_net *lpn)
378 atomic_inc(&lpn->lpn_refcount);
381 extern void lnet_destroy_peer_net_locked(struct lnet_peer_net *lpn);
384 lnet_peer_net_decref_locked(struct lnet_peer_net *lpn)
386 if (atomic_dec_and_test(&lpn->lpn_refcount))
387 lnet_destroy_peer_net_locked(lpn);
391 lnet_peer_addref_locked(struct lnet_peer *lp)
393 atomic_inc(&lp->lp_refcount);
396 extern void lnet_destroy_peer_locked(struct lnet_peer *lp);
399 lnet_peer_decref_locked(struct lnet_peer *lp)
401 if (atomic_dec_and_test(&lp->lp_refcount))
402 lnet_destroy_peer_locked(lp);
406 lnet_peer_ni_addref_locked(struct lnet_peer_ni *lp)
408 kref_get(&lp->lpni_kref);
411 extern void lnet_destroy_peer_ni_locked(struct kref *ref);
414 lnet_peer_ni_decref_locked(struct lnet_peer_ni *lp)
416 kref_put(&lp->lpni_kref, lnet_destroy_peer_ni_locked);
420 lnet_isrouter(struct lnet_peer_ni *lpni)
422 return lpni->lpni_peer_net->lpn_peer->lp_rtr_refcount != 0;
426 lnet_ni_addref_locked(struct lnet_ni *ni, int cpt)
428 LASSERT(cpt >= 0 && cpt < LNET_CPT_NUMBER);
429 LASSERT(*ni->ni_refs[cpt] >= 0);
431 (*ni->ni_refs[cpt])++;
435 lnet_ni_addref(struct lnet_ni *ni)
438 lnet_ni_addref_locked(ni, 0);
443 lnet_ni_decref_locked(struct lnet_ni *ni, int cpt)
445 LASSERT(cpt >= 0 && cpt < LNET_CPT_NUMBER);
446 LASSERT(*ni->ni_refs[cpt] > 0);
448 (*ni->ni_refs[cpt])--;
452 lnet_ni_decref(struct lnet_ni *ni)
455 lnet_ni_decref_locked(ni, 0);
459 static inline struct lnet_msg *
462 struct lnet_msg *msg;
464 msg = kmem_cache_zalloc(lnet_msg_cachep, GFP_NOFS);
470 lnet_msg_free(struct lnet_msg *msg)
472 LASSERT(!msg->msg_onactivelist);
473 kmem_cache_free(lnet_msg_cachep, msg);
476 static inline struct lnet_rsp_tracker *
477 lnet_rspt_alloc(int cpt)
479 struct lnet_rsp_tracker *rspt;
481 rspt = kmem_cache_zalloc(lnet_rspt_cachep, GFP_NOFS);
484 the_lnet.ln_counters[cpt]->lct_health.lch_rst_alloc++;
485 lnet_net_unlock(cpt);
487 LIBCFS_ALLOC_POST(rspt, sizeof(*rspt), "alloc");
492 lnet_rspt_free(struct lnet_rsp_tracker *rspt, int cpt)
494 LIBCFS_FREE_PRE(rspt, sizeof(*rspt), "free");
495 kmem_cache_free(lnet_rspt_cachep, rspt);
497 the_lnet.ln_counters[cpt]->lct_health.lch_rst_alloc--;
498 lnet_net_unlock(cpt);
501 void lnet_ni_free(struct lnet_ni *ni);
502 void lnet_net_free(struct lnet_net *net);
505 lnet_net_alloc(__u32 net_type, struct list_head *netlist);
508 lnet_ni_alloc(struct lnet_net *net, struct cfs_expr_list *el,
511 lnet_ni_alloc_w_cpt_array(struct lnet_net *net, __u32 *cpts, __u32 ncpts,
513 int lnet_ni_add_interface(struct lnet_ni *ni, char *iface);
516 lnet_nid2peerhash(struct lnet_nid *nid)
521 for (i = 0; i < 4; i++)
522 h = cfs_hash_32(nid->nid_addr[i]^h, 32);
523 return cfs_hash_32(LNET_NID_NET(nid) ^ h, LNET_PEER_HASH_BITS);
526 static inline struct list_head *
527 lnet_net2rnethash(__u32 net)
529 return &the_lnet.ln_remote_nets_hash[(LNET_NETNUM(net) +
531 ((1U << the_lnet.ln_remote_nets_hbits) - 1)];
534 static inline void lnet_hdr_from_nid4(struct lnet_hdr *hdr,
535 const struct lnet_hdr_nid4 *vhdr)
537 const struct _lnet_hdr_nid4 *hdr_nid4 = (void *)vhdr;
539 lnet_nid4_to_nid(le64_to_cpu(hdr_nid4->dest_nid), &hdr->dest_nid);
540 lnet_nid4_to_nid(le64_to_cpu(hdr_nid4->src_nid), &hdr->src_nid);
541 hdr->dest_pid = le32_to_cpu(hdr_nid4->dest_pid);
542 hdr->src_pid = le32_to_cpu(hdr_nid4->src_pid);
543 hdr->type = le32_to_cpu(hdr_nid4->type);
544 hdr->payload_length = le32_to_cpu(hdr_nid4->payload_length);
546 hdr->msg = hdr_nid4->msg;
549 static inline void lnet_hdr_to_nid4(const struct lnet_hdr *hdr,
550 struct lnet_hdr_nid4 *vhdr)
552 struct _lnet_hdr_nid4 *hdr_nid4 = (void *)vhdr;
554 hdr_nid4->dest_nid = cpu_to_le64(lnet_nid_to_nid4(&hdr->dest_nid));
555 hdr_nid4->src_nid = cpu_to_le64(lnet_nid_to_nid4(&hdr->src_nid));
556 hdr_nid4->dest_pid = cpu_to_le32(hdr->dest_pid);
557 hdr_nid4->src_pid = cpu_to_le32(hdr->src_pid);
558 hdr_nid4->type = cpu_to_le32(hdr->type);
559 hdr_nid4->payload_length = cpu_to_le32(hdr->payload_length);
561 hdr_nid4->msg = hdr->msg;
564 static inline void lnet_hdr_from_nid16(struct lnet_hdr *hdr,
565 const struct lnet_hdr_nid16 *vhdr)
567 const struct lnet_hdr *hdr16 = (void *)vhdr;
569 hdr->dest_nid = hdr16->dest_nid;
570 hdr->src_nid = hdr16->src_nid;
571 hdr->dest_pid = le32_to_cpu(hdr16->dest_pid);
572 hdr->src_pid = le32_to_cpu(hdr16->src_pid);
573 hdr->type = le32_to_cpu(hdr16->type);
574 hdr->payload_length = le32_to_cpu(hdr16->payload_length);
576 hdr->msg = hdr16->msg;
579 static inline void lnet_hdr_to_nid16(const struct lnet_hdr *hdr,
580 struct lnet_hdr_nid16 *vhdr)
582 struct lnet_hdr *hdr16 = (void *)vhdr;
584 hdr16->dest_nid = hdr->dest_nid;
585 hdr16->src_nid = hdr->src_nid;
586 hdr16->dest_pid = cpu_to_le32(hdr->dest_pid);
587 hdr16->src_pid = cpu_to_le32(hdr->src_pid);
588 hdr16->type = cpu_to_le32(hdr->type);
589 hdr16->payload_length = cpu_to_le32(hdr->payload_length);
591 hdr16->msg = hdr->msg;
594 extern const struct lnet_lnd the_lolnd;
595 extern int avoid_asym_router_failure;
597 extern unsigned int lnet_nid_cpt_hash(struct lnet_nid *nid,
598 unsigned int number);
599 extern int lnet_cpt_of_nid_locked(struct lnet_nid *nid, struct lnet_ni *ni);
600 extern int lnet_cpt_of_nid(lnet_nid_t nid, struct lnet_ni *ni);
601 extern int lnet_nid2cpt(struct lnet_nid *nid, struct lnet_ni *ni);
602 extern struct lnet_ni *lnet_nid_to_ni_locked(struct lnet_nid *nid, int cpt);
603 extern struct lnet_ni *lnet_net2ni_locked(__u32 net, int cpt);
604 extern struct lnet_ni *lnet_net2ni_addref(__u32 net);
605 extern struct lnet_ni *lnet_nid_to_ni_addref(struct lnet_nid *nid);
606 struct lnet_net *lnet_get_net_locked(__u32 net_id);
608 int lnet_lib_init(void);
609 void lnet_lib_exit(void);
610 void lnet_router_exit(void);
612 extern unsigned int lnet_response_tracking;
613 extern unsigned lnet_transaction_timeout;
614 extern unsigned lnet_retry_count;
615 extern unsigned int lnet_lnd_timeout;
616 extern unsigned int lnet_numa_range;
617 extern unsigned int lnet_health_sensitivity;
618 extern unsigned int lnet_recovery_interval;
619 extern unsigned int lnet_recovery_limit;
620 extern unsigned int lnet_peer_discovery_disabled;
621 extern unsigned int lnet_drop_asym_route;
622 extern unsigned int lnet_max_recovery_ping_interval;
623 extern unsigned int lnet_max_recovery_ping_count;
624 extern unsigned int router_sensitivity_percentage;
625 extern int alive_router_check_interval;
626 extern int live_router_check_interval;
627 extern int dead_router_check_interval;
628 extern int portal_rotor;
629 extern int lock_prim_nid;
631 void lnet_mt_event_handler(struct lnet_event *event);
633 int lnet_notify(struct lnet_ni *ni, struct lnet_nid *peer, bool alive,
634 bool reset, time64_t when);
635 void lnet_notify_locked(struct lnet_peer_ni *lp, int notifylnd, int alive,
637 int lnet_add_route(__u32 net, __u32 hops, struct lnet_nid *gateway,
638 __u32 priority, __u32 sensitivity);
639 int lnet_del_route(__u32 net, struct lnet_nid *gw_nid);
640 void lnet_move_route(struct lnet_route *route, struct lnet_peer *lp,
641 struct list_head *rt_list);
642 void lnet_destroy_routes(void);
643 int lnet_get_route(int idx, __u32 *net, __u32 *hops,
644 lnet_nid_t *gateway, __u32 *alive, __u32 *priority,
646 int lnet_get_rtr_pool_cfg(int idx, struct lnet_ioctl_pool_cfg *pool_cfg);
647 struct lnet_ni *lnet_get_next_ni_locked(struct lnet_net *mynet,
648 struct lnet_ni *prev);
649 struct lnet_ni *lnet_get_ni_idx_locked(int idx);
650 int lnet_get_net_healthv_locked(struct lnet_net *net);
652 extern int lnet_get_peer_list(__u32 *countp, __u32 *sizep,
653 struct lnet_process_id __user *ids);
654 void lnet_peer_ni_set_healthv(struct lnet_nid *nid, int value, bool all);
655 extern void lnet_peer_ni_add_to_recoveryq_locked(struct lnet_peer_ni *lpni,
656 struct list_head *queue,
658 extern int lnet_peer_add_pref_nid(struct lnet_peer_ni *lpni,
659 struct lnet_nid *nid);
660 extern void lnet_peer_clr_pref_nids(struct lnet_peer_ni *lpni);
661 extern int lnet_peer_del_pref_nid(struct lnet_peer_ni *lpni,
662 struct lnet_nid *nid);
663 void lnet_peer_ni_set_selection_priority(struct lnet_peer_ni *lpni,
665 extern void lnet_ni_add_to_recoveryq_locked(struct lnet_ni *ni,
666 struct list_head *queue,
669 void lnet_router_debugfs_init(void);
670 void lnet_router_debugfs_fini(void);
671 int lnet_rtrpools_alloc(int im_a_router);
672 void lnet_destroy_rtrbuf(struct lnet_rtrbuf *rb, int npages);
673 int lnet_rtrpools_adjust(int tiny, int small, int large);
674 int lnet_rtrpools_enable(void);
675 void lnet_rtrpools_disable(void);
676 void lnet_rtrpools_free(int keep_pools);
677 void lnet_rtr_transfer_to_peer(struct lnet_peer *src,
678 struct lnet_peer *target);
679 struct lnet_remotenet *lnet_find_rnet_locked(__u32 net);
680 int lnet_dyn_add_net(struct lnet_ioctl_config_data *conf);
681 int lnet_dyn_del_net(__u32 net);
682 int lnet_dyn_add_ni(struct lnet_ioctl_config_ni *conf, u32 net,
683 struct lnet_ioctl_config_lnd_tunables *tun);
684 int lnet_dyn_del_ni(struct lnet_nid *nid);
685 int lnet_clear_lazy_portal(struct lnet_ni *ni, int portal, char *reason);
686 struct lnet_net *lnet_get_net_locked(__u32 net_id);
687 void lnet_net_clr_pref_rtrs(struct lnet_net *net);
688 int lnet_net_add_pref_rtr(struct lnet_net *net, struct lnet_nid *gw_nid);
690 int lnet_islocalnid(struct lnet_nid *nid);
691 int lnet_islocalnet(__u32 net);
692 int lnet_islocalnet_locked(__u32 net);
694 void lnet_msg_attach_md(struct lnet_msg *msg, struct lnet_libmd *md,
695 unsigned int offset, unsigned int mlen);
696 void lnet_build_unlink_event(struct lnet_libmd *md, struct lnet_event *ev);
697 void lnet_build_msg_event(struct lnet_msg *msg, enum lnet_event_kind ev_type);
698 void lnet_msg_commit(struct lnet_msg *msg, int cpt);
699 void lnet_msg_decommit(struct lnet_msg *msg, int cpt, int status);
701 void lnet_prep_send(struct lnet_msg *msg, int type,
702 struct lnet_processid *target, unsigned int offset,
704 int lnet_send(struct lnet_nid *nid, struct lnet_msg *msg,
705 struct lnet_nid *rtr_nid);
706 int lnet_send_ping(struct lnet_nid *dest_nid, struct lnet_handle_md *mdh,
707 int bytes, void *user_ptr, lnet_handler_t handler,
709 void lnet_return_tx_credits_locked(struct lnet_msg *msg);
710 void lnet_return_rx_credits_locked(struct lnet_msg *msg);
711 void lnet_schedule_blocked_locked(struct lnet_rtrbufpool *rbp);
712 void lnet_drop_routed_msgs_locked(struct list_head *list, int cpt);
714 struct list_head **lnet_create_array_of_queues(void);
716 /* portals functions */
717 /* portals attributes */
719 lnet_ptl_is_lazy(struct lnet_portal *ptl)
721 return !!(ptl->ptl_options & LNET_PTL_LAZY);
725 lnet_ptl_is_unique(struct lnet_portal *ptl)
727 return !!(ptl->ptl_options & LNET_PTL_MATCH_UNIQUE);
731 lnet_ptl_is_wildcard(struct lnet_portal *ptl)
733 return !!(ptl->ptl_options & LNET_PTL_MATCH_WILDCARD);
737 lnet_ptl_setopt(struct lnet_portal *ptl, int opt)
739 ptl->ptl_options |= opt;
743 lnet_ptl_unsetopt(struct lnet_portal *ptl, int opt)
745 ptl->ptl_options &= ~opt;
748 /* match-table functions */
749 struct list_head *lnet_mt_match_head(struct lnet_match_table *mtable,
750 struct lnet_processid *id, __u64 mbits);
751 struct lnet_match_table *lnet_mt_of_attach(unsigned int index,
752 struct lnet_processid *id,
753 __u64 mbits, __u64 ignore_bits,
754 enum lnet_ins_pos pos);
755 int lnet_mt_match_md(struct lnet_match_table *mtable,
756 struct lnet_match_info *info, struct lnet_msg *msg);
758 /* portals match/attach functions */
759 void lnet_ptl_attach_md(struct lnet_me *me, struct lnet_libmd *md,
760 struct list_head *matches, struct list_head *drops);
761 void lnet_ptl_detach_md(struct lnet_me *me, struct lnet_libmd *md);
762 int lnet_ptl_match_md(struct lnet_match_info *info, struct lnet_msg *msg);
764 /* initialized and finalize portals */
765 int lnet_portals_create(void);
766 void lnet_portals_destroy(void);
768 /* message functions */
769 int lnet_parse(struct lnet_ni *ni, struct lnet_hdr *hdr,
770 struct lnet_nid *fromnid, void *private, int rdma_req);
771 int lnet_parse_local(struct lnet_ni *ni, struct lnet_msg *msg);
772 int lnet_parse_forward_locked(struct lnet_ni *ni, struct lnet_msg *msg);
774 void lnet_recv(struct lnet_ni *ni, void *private, struct lnet_msg *msg,
775 int delayed, unsigned int offset, unsigned int mlen,
777 void lnet_ni_recv(struct lnet_ni *ni, void *private, struct lnet_msg *msg,
778 int delayed, unsigned int offset,
779 unsigned int mlen, unsigned int rlen);
780 void lnet_ni_send(struct lnet_ni *ni, struct lnet_msg *msg);
782 struct lnet_msg *lnet_create_reply_msg(struct lnet_ni *ni,
783 struct lnet_msg *get_msg);
784 void lnet_set_reply_msg_len(struct lnet_ni *ni, struct lnet_msg *msg,
786 void lnet_detach_rsp_tracker(struct lnet_libmd *md, int cpt);
787 void lnet_clean_zombie_rstqs(void);
789 bool lnet_md_discarded(struct lnet_libmd *md);
790 void lnet_finalize(struct lnet_msg *msg, int rc);
791 bool lnet_send_error_simulation(struct lnet_msg *msg,
792 enum lnet_msg_hstatus *hstatus);
793 void lnet_handle_remote_failure_locked(struct lnet_peer_ni *lpni);
795 void lnet_drop_message(struct lnet_ni *ni, int cpt, void *private,
796 unsigned int nob, __u32 msg_type);
797 void lnet_drop_delayed_msg_list(struct list_head *head, char *reason);
798 void lnet_recv_delayed_msg_list(struct list_head *head);
800 int lnet_msg_container_setup(struct lnet_msg_container *container, int cpt);
801 void lnet_msg_container_cleanup(struct lnet_msg_container *container);
802 void lnet_msg_containers_destroy(void);
803 int lnet_msg_containers_create(void);
805 char *lnet_health_error2str(enum lnet_msg_hstatus hstatus);
806 char *lnet_msgtyp2str(int type);
807 int lnet_fail_nid(lnet_nid_t nid, unsigned int threshold);
809 /** \addtogroup lnet_fault_simulation @{ */
811 int lnet_fault_ctl(int cmd, struct libcfs_ioctl_data *data);
812 int lnet_fault_init(void);
813 void lnet_fault_fini(void);
815 bool lnet_drop_rule_match(struct lnet_hdr *hdr, struct lnet_nid *local_nid,
816 enum lnet_msg_hstatus *hstatus);
818 int lnet_delay_rule_add(struct lnet_fault_attr *attr);
819 int lnet_delay_rule_del(lnet_nid_t src, lnet_nid_t dst, bool shutdown);
820 int lnet_delay_rule_list(int pos, struct lnet_fault_attr *attr,
821 struct lnet_fault_stat *stat);
822 void lnet_delay_rule_reset(void);
823 void lnet_delay_rule_check(void);
824 bool lnet_delay_rule_match_locked(struct lnet_hdr *hdr, struct lnet_msg *msg);
826 /** @} lnet_fault_simulation */
828 void lnet_counters_get_common(struct lnet_counters_common *common);
829 int lnet_counters_get(struct lnet_counters *counters);
830 void lnet_counters_reset(void);
832 lnet_ni_set_sel_priority_locked(struct lnet_ni *ni, __u32 priority)
834 ni->ni_sel_priority = priority;
838 lnet_net_set_sel_priority_locked(struct lnet_net *net, __u32 priority)
840 net->net_sel_priority = priority;
843 unsigned int lnet_iov_nob(unsigned int niov, struct kvec *iov);
844 unsigned int lnet_kiov_nob(unsigned int niov, struct bio_vec *iov);
845 int lnet_extract_kiov(int dst_niov, struct bio_vec *dst,
846 int src_niov, struct bio_vec *src,
847 unsigned int offset, unsigned int len);
849 void lnet_copy_iov2iov(unsigned int ndiov, struct kvec *diov,
850 unsigned int doffset,
851 unsigned int nsiov, struct kvec *siov,
852 unsigned int soffset, unsigned int nob);
853 void lnet_copy_kiov2iov(unsigned int niov, struct kvec *iov,
854 unsigned int iovoffset,
855 unsigned int nkiov, struct bio_vec *kiov,
856 unsigned int kiovoffset, unsigned int nob);
857 void lnet_copy_iov2kiov(unsigned int nkiov, struct bio_vec *kiov,
858 unsigned int kiovoffset,
859 unsigned int niov, struct kvec *iov,
860 unsigned int iovoffset, unsigned int nob);
861 void lnet_copy_kiov2kiov(unsigned int ndkiov, struct bio_vec *dkiov,
862 unsigned int doffset,
863 unsigned int nskiov, struct bio_vec *skiov,
864 unsigned int soffset, unsigned int nob);
867 lnet_copy_kiov2flat(int dlen, void *dest, unsigned int doffset,
868 unsigned int nsiov, struct bio_vec *skiov,
869 unsigned int soffset, unsigned int nob)
871 struct kvec diov = { .iov_base = dest, .iov_len = dlen };
873 lnet_copy_kiov2iov(1, &diov, doffset,
874 nsiov, skiov, soffset, nob);
878 lnet_copy_flat2kiov(unsigned int ndiov, struct bio_vec *dkiov,
879 unsigned int doffset, int slen, void *src,
880 unsigned int soffset, unsigned int nob)
882 struct kvec siov = { .iov_base = src, .iov_len = slen };
883 lnet_copy_iov2kiov(ndiov, dkiov, doffset,
884 1, &siov, soffset, nob);
887 void lnet_me_unlink(struct lnet_me *me);
889 void lnet_md_unlink(struct lnet_libmd *md);
890 void lnet_md_deconstruct(struct lnet_libmd *lmd, struct lnet_event *ev);
891 struct page *lnet_get_first_page(struct lnet_libmd *md, unsigned int offset);
892 int lnet_cpt_of_md(struct lnet_libmd *md, unsigned int offset);
894 unsigned int lnet_get_lnd_timeout(void);
895 void lnet_register_lnd(const struct lnet_lnd *lnd);
896 void lnet_unregister_lnd(const struct lnet_lnd *lnd);
898 struct socket *lnet_connect(struct lnet_nid *peer_nid, int interface,
899 struct sockaddr *peeraddr, struct net *ns);
900 void lnet_connect_console_error(int rc, struct lnet_nid *peer_nid,
901 struct sockaddr *sa);
902 int lnet_count_acceptor_nets(void);
903 int lnet_acceptor_timeout(void);
904 int lnet_acceptor_port(void);
905 int lnet_acceptor_start(void);
906 void lnet_acceptor_stop(void);
908 struct lnet_inetdev {
920 char li_name[IFNAMSIZ];
923 int lnet_inet_enumerate(struct lnet_inetdev **dev_list, struct net *ns,
925 int lnet_inet_select(struct lnet_ni *ni, struct lnet_inetdev *ifaces,
928 void lnet_sock_setbuf(struct socket *socket, int txbufsize, int rxbufsize);
929 void lnet_sock_getbuf(struct socket *socket, int *txbufsize, int *rxbufsize);
930 int lnet_sock_getaddr(struct socket *socket, bool remote,
931 struct sockaddr_storage *peer);
932 int lnet_sock_write(struct socket *sock, void *buffer, int nob, int timeout);
933 int lnet_sock_read(struct socket *sock, void *buffer, int nob, int timeout);
935 struct socket *lnet_sock_listen(int port, int backlog,
937 struct socket *lnet_sock_connect(int interface, int local_port,
938 struct sockaddr *peeraddr,
941 int lnet_peers_start_down(void);
942 int lnet_peer_buffer_credits(struct lnet_net *net);
943 void lnet_consolidate_routes_locked(struct lnet_peer *orig_lp,
944 struct lnet_peer *new_lp);
945 void lnet_router_discovery_complete(struct lnet_peer *lp);
946 void lnet_router_discovery_ping_reply(struct lnet_peer *lp,
947 struct lnet_ping_buffer *pbuf);
949 int lnet_monitor_thr_start(void);
950 void lnet_monitor_thr_stop(void);
952 bool lnet_router_checker_active(void);
953 void lnet_check_routers(void);
954 void lnet_wait_router_start(void);
955 void lnet_swap_pinginfo(struct lnet_ping_buffer *pbuf);
957 int lnet_ping_info_validate(struct lnet_ping_info *pinfo);
958 struct lnet_ping_buffer *lnet_ping_buffer_alloc(int bytes, gfp_t gfp);
959 void lnet_ping_buffer_free(struct lnet_ping_buffer *pbuf);
960 int lnet_get_link_status(struct net_device *dev);
961 __u32 lnet_set_link_fatal_state(struct lnet_ni *ni, unsigned int link_state);
963 static inline void lnet_ping_buffer_addref(struct lnet_ping_buffer *pbuf)
965 atomic_inc(&pbuf->pb_refcnt);
968 static inline void lnet_ping_buffer_decref(struct lnet_ping_buffer *pbuf)
970 if (atomic_dec_and_test(&pbuf->pb_refcnt)) {
971 wake_up_var(&pbuf->pb_refcnt);
972 lnet_ping_buffer_free(pbuf);
976 struct lnet_ping_iter {
977 struct lnet_ping_info *pinfo;
981 u32 *ping_iter_first(struct lnet_ping_iter *pi, struct lnet_ping_buffer *pbuf,
982 struct lnet_nid *nid);
983 u32 *ping_iter_next(struct lnet_ping_iter *pi, struct lnet_nid *nid);
984 int ping_info_count_entries(struct lnet_ping_buffer *pbuf);
986 static inline int lnet_push_target_resize_needed(void)
988 return the_lnet.ln_push_target->pb_nbytes < the_lnet.ln_push_target_nbytes;
991 int lnet_push_target_resize(void);
992 int lnet_push_target_post(struct lnet_ping_buffer *pbuf,
993 struct lnet_handle_md *mdh);
994 void lnet_peer_push_event(struct lnet_event *ev);
996 int lnet_parse_ip2nets(const char **networksp, const char *ip2nets);
997 int lnet_parse_routes(const char *route_str, int *im_a_router);
998 int lnet_parse_networks(struct list_head *nilist, const char *networks);
999 bool lnet_net_unique(__u32 net_id, struct list_head *nilist,
1000 struct lnet_net **net);
1001 bool lnet_ni_unique_net(struct list_head *nilist, char *iface);
1002 void lnet_incr_dlc_seq(void);
1003 __u32 lnet_get_dlc_seq_locked(void);
1005 struct lnet_peer_net *lnet_get_next_peer_net_locked(struct lnet_peer *lp,
1007 struct lnet_peer_ni *lnet_get_next_peer_ni_locked(struct lnet_peer *peer,
1008 struct lnet_peer_net *peer_net,
1009 struct lnet_peer_ni *prev);
1010 struct lnet_peer_ni *lnet_peerni_by_nid_locked(struct lnet_nid *nid,
1011 struct lnet_nid *pref,
1013 struct lnet_peer_ni *lnet_nid2peerni_ex(struct lnet_nid *nid);
1014 struct lnet_peer_ni *lnet_peer_ni_get_locked(struct lnet_peer *lp,
1015 struct lnet_nid *nid);
1016 struct lnet_peer_ni *lnet_peer_ni_find_locked(struct lnet_nid *nid);
1017 struct lnet_peer *lnet_find_peer(struct lnet_nid *nid);
1018 void lnet_peer_net_added(struct lnet_net *net);
1019 void lnet_peer_primary_nid_locked(struct lnet_nid *nid,
1020 struct lnet_nid *result);
1021 int lnet_discover_peer_locked(struct lnet_peer_ni *lpni, int cpt, bool block);
1022 void lnet_peer_queue_message(struct lnet_peer *lp, struct lnet_msg *msg);
1023 int lnet_peer_discovery_start(void);
1024 void lnet_peer_discovery_stop(void);
1025 void lnet_push_update_to_peers(int force);
1026 void lnet_peer_tables_cleanup(struct lnet_net *net);
1027 void lnet_peer_uninit(void);
1028 int lnet_peer_tables_create(void);
1029 void lnet_debug_peer(struct lnet_nid *nid);
1030 struct lnet_peer_net *lnet_peer_get_net_locked(struct lnet_peer *peer,
1032 bool lnet_peer_is_pref_nid_locked(struct lnet_peer_ni *lpni,
1033 struct lnet_nid *nid);
1034 int lnet_peer_add_pref_nid(struct lnet_peer_ni *lpni, struct lnet_nid *nid);
1035 void lnet_peer_clr_pref_nids(struct lnet_peer_ni *lpni);
1036 bool lnet_peer_is_pref_rtr_locked(struct lnet_peer_ni *lpni,
1037 struct lnet_nid *gw_nid);
1038 void lnet_peer_clr_pref_rtrs(struct lnet_peer_ni *lpni);
1039 int lnet_peer_add_pref_rtr(struct lnet_peer_ni *lpni, struct lnet_nid *nid);
1040 int lnet_peer_ni_set_non_mr_pref_nid(struct lnet_peer_ni *lpni,
1041 struct lnet_nid *nid);
1042 int lnet_user_add_peer_ni(struct lnet_nid *key_nid, struct lnet_nid *nid,
1043 bool mr, bool lock_prim);
1044 int lnet_del_peer_ni(struct lnet_nid *key_nid, struct lnet_nid *nid,
1046 int lnet_get_peer_info(struct lnet_ioctl_peer_cfg *cfg, void __user *bulk);
1047 int lnet_get_peer_ni_info(__u32 peer_index, __u64 *nid,
1048 char alivness[LNET_MAX_STR_LEN],
1049 __u32 *cpt_iter, __u32 *refcount,
1050 __u32 *ni_peer_tx_credits, __u32 *peer_tx_credits,
1051 __u32 *peer_rtr_credits, __u32 *peer_min_rtr_credtis,
1052 __u32 *peer_tx_qnob);
1053 int lnet_get_peer_ni_hstats(struct lnet_ioctl_peer_ni_hstats *stats);
1056 lnet_peer_net_set_sel_priority_locked(struct lnet_peer_net *lpn, __u32 priority)
1058 lpn->lpn_sel_priority = priority;
1062 static inline struct lnet_peer_net *
1063 lnet_find_peer_net_locked(struct lnet_peer *peer, __u32 net_id)
1065 struct lnet_peer_net *peer_net;
1067 list_for_each_entry(peer_net, &peer->lp_peer_nets, lpn_peer_nets) {
1068 if (peer_net->lpn_net_id == net_id)
1076 lnet_peer_is_multi_rail(struct lnet_peer *lp)
1078 if (lp->lp_state & LNET_PEER_MULTI_RAIL)
1084 lnet_peer_ni_is_configured(struct lnet_peer_ni *lpni)
1086 if (lpni->lpni_peer_net->lpn_peer->lp_state & LNET_PEER_CONFIGURED)
1092 lnet_peer_ni_is_primary(struct lnet_peer_ni *lpni)
1094 return nid_same(&lpni->lpni_nid,
1095 &lpni->lpni_peer_net->lpn_peer->lp_primary_nid);
1098 bool lnet_peer_is_uptodate(struct lnet_peer *lp);
1099 bool lnet_peer_is_uptodate_locked(struct lnet_peer *lp);
1100 bool lnet_is_discovery_disabled(struct lnet_peer *lp);
1101 bool lnet_is_discovery_disabled_locked(struct lnet_peer *lp);
1102 bool lnet_peer_gw_discovery(struct lnet_peer *lp);
1105 lnet_peer_needs_push(struct lnet_peer *lp)
1107 if (!(lp->lp_state & LNET_PEER_MULTI_RAIL))
1109 if (lp->lp_state & LNET_PEER_MARK_DELETED)
1111 if (lp->lp_state & LNET_PEER_FORCE_PUSH)
1113 if (lp->lp_state & LNET_PEER_NO_DISCOVERY)
1115 /* if discovery is not enabled then no need to push */
1116 if (lnet_peer_discovery_disabled)
1118 if (lp->lp_node_seqno < atomic_read(&the_lnet.ln_ping_target_seqno))
1123 static inline unsigned int
1124 lnet_get_next_recovery_ping(unsigned int ping_count, time64_t now)
1126 unsigned int interval;
1128 /* lnet_max_recovery_interval <= 2^lnet_max_recovery_ping_count */
1129 if (ping_count > lnet_max_recovery_ping_count)
1130 interval = lnet_max_recovery_ping_interval;
1132 interval = 1 << ping_count;
1134 return now + interval;
1138 lnet_peer_ni_set_next_ping(struct lnet_peer_ni *lpni, time64_t now)
1140 lpni->lpni_next_ping =
1141 lnet_get_next_recovery_ping(lpni->lpni_ping_count, now);
1145 lnet_ni_set_next_ping(struct lnet_ni *ni, time64_t now)
1147 ni->ni_next_ping = lnet_get_next_recovery_ping(ni->ni_ping_count, now);
1151 * A peer NI is alive if it satisfies the following two conditions:
1152 * 1. peer NI health >= LNET_MAX_HEALTH_VALUE * router_sensitivity_percentage
1153 * 2. the cached NI status received when we discover the peer is UP
1156 lnet_is_peer_ni_alive(struct lnet_peer_ni *lpni)
1158 bool halive = false;
1160 halive = (atomic_read(&lpni->lpni_healthv) >=
1161 (LNET_MAX_HEALTH_VALUE * router_sensitivity_percentage / 100));
1163 return halive && lpni->lpni_ns_status == LNET_NI_STATUS_UP;
1167 lnet_update_peer_net_healthv(struct lnet_peer_ni *lpni)
1169 struct lnet_peer_net *lpn;
1170 int best_healthv = 0;
1172 lpn = lpni->lpni_peer_net;
1174 list_for_each_entry(lpni, &lpn->lpn_peer_nis, lpni_peer_nis) {
1175 int lpni_healthv = atomic_read(&lpni->lpni_healthv);
1176 if (best_healthv < lpni_healthv)
1177 best_healthv = lpni_healthv;
1180 lpn->lpn_healthv = best_healthv;
1184 lnet_set_lpni_healthv_locked(struct lnet_peer_ni *lpni, int value)
1186 if (atomic_read(&lpni->lpni_healthv) == value)
1188 atomic_set(&lpni->lpni_healthv, value);
1189 lnet_update_peer_net_healthv(lpni);
1193 lnet_atomic_add_unless_max(atomic_t *v, int a, int u)
1195 int c = atomic_read(v);
1208 old = atomic_cmpxchg(v, c, m);
1224 lnet_dec_healthv_locked(atomic_t *healthv, int sensitivity)
1226 int h = atomic_read(healthv);
1231 if (h < sensitivity)
1236 return (atomic_xchg(healthv, h) != h);
1240 lnet_dec_lpni_healthv_locked(struct lnet_peer_ni *lpni)
1242 /* If there is a health sensitivity in the peer then use that
1243 * instead of the globally set one.
1244 * only adjust the net health if the lpni health value changed
1246 if (lnet_dec_healthv_locked(&lpni->lpni_healthv,
1247 lpni->lpni_peer_net->lpn_peer->lp_health_sensitivity ? :
1248 lnet_health_sensitivity)) {
1249 lnet_update_peer_net_healthv(lpni);
1254 lnet_inc_lpni_healthv_locked(struct lnet_peer_ni *lpni)
1256 /* If there is a health sensitivity in the peer then use that
1257 * instead of the globally set one.
1258 * only adjust the net health if the lpni health value changed
1260 if (lnet_atomic_add_unless_max(&lpni->lpni_healthv,
1261 lpni->lpni_peer_net->lpn_peer->lp_health_sensitivity ? :
1262 lnet_health_sensitivity,
1263 LNET_MAX_HEALTH_VALUE)) {
1264 lnet_update_peer_net_healthv(lpni);
1269 lnet_inc_healthv(atomic_t *healthv, int value)
1271 lnet_atomic_add_unless_max(healthv, value, LNET_MAX_HEALTH_VALUE);
1275 lnet_get_list_len(struct list_head *list)
1277 struct list_head *l;
1280 list_for_each(l, list)
1286 void lnet_incr_stats(struct lnet_element_stats *stats,
1287 enum lnet_msg_type msg_type,
1288 enum lnet_stats_type stats_type);
1290 __u32 lnet_sum_stats(struct lnet_element_stats *stats,
1291 enum lnet_stats_type stats_type);
1293 void lnet_usr_translate_stats(struct lnet_ioctl_element_msg_stats *msg_stats,
1294 struct lnet_element_stats *stats);
1296 lnet_set_route_aliveness(struct lnet_route *route, bool alive)
1298 bool old = atomic_xchg(&route->lr_alive, alive);
1301 CERROR("route to %s through %s has gone from %s to %s\n",
1302 libcfs_net2str(route->lr_net),
1303 libcfs_nidstr(&route->lr_gateway->lp_primary_nid),
1304 old ? "up" : "down",
1305 alive ? "up" : "down");
1308 extern struct blocking_notifier_head lnet_ioctl_list;
1309 static inline int notifier_from_ioctl_errno(int err)
1313 return notifier_from_errno(err) | NOTIFY_STOP_MASK;
1316 void lnet_mark_ping_buffer_for_update(void);
1317 void lnet_queue_ping_buffer_update(void);