1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2002 Cluster File Systems, Inc.
6 * This file is part of Portals
7 * http://sourceforge.net/projects/sandiaportals/
9 * Portals is free software; you can redistribute it and/or
10 * modify it under the terms of version 2 of the GNU General Public
11 * License as published by the Free Software Foundation.
13 * Portals is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with Portals; if not, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 LIST_HEAD(kpr_routes);
27 LIST_HEAD(kpr_gateways);
30 unsigned long long kpr_fwd_bytes;
31 unsigned long kpr_fwd_packets;
32 unsigned long kpr_fwd_errors;
33 atomic_t kpr_queue_depth;
35 /* Mostly the tables are read-only (thread and interrupt context)
37 * Once in a blue moon we register/deregister NALs and add/remove routing
38 * entries (thread context only)... */
39 rwlock_t kpr_rwlock = RW_LOCK_UNLOCKED;
41 kpr_router_interface_t kpr_router_interface = {
42 kprri_register: kpr_register_nal,
43 kprri_lookup: kpr_lookup_target,
44 kprri_fwd_start: kpr_forward_packet,
45 kprri_fwd_done: kpr_complete_packet,
46 kprri_notify: kpr_nal_notify,
47 kprri_shutdown: kpr_shutdown_nal,
48 kprri_deregister: kpr_deregister_nal,
52 kpr_register_nal (kpr_nal_interface_t *nalif, void **argp)
58 CDEBUG (D_NET, "Registering NAL %d\n", nalif->kprni_nalid);
60 PORTAL_ALLOC (ne, sizeof (*ne));
64 memset (ne, 0, sizeof (*ne));
65 memcpy ((void *)&ne->kpne_interface, (void *)nalif, sizeof (*nalif));
67 LASSERT (!in_interrupt());
68 write_lock_irqsave (&kpr_rwlock, flags);
70 for (e = kpr_nals.next; e != &kpr_nals; e = e->next)
72 kpr_nal_entry_t *ne2 = list_entry (e, kpr_nal_entry_t, kpne_list);
74 if (ne2->kpne_interface.kprni_nalid == ne->kpne_interface.kprni_nalid)
76 write_unlock_irqrestore (&kpr_rwlock, flags);
78 CERROR ("Attempt to register same NAL %d twice\n", ne->kpne_interface.kprni_nalid);
80 PORTAL_FREE (ne, sizeof (*ne));
85 list_add (&ne->kpne_list, &kpr_nals);
87 write_unlock_irqrestore (&kpr_rwlock, flags);
95 kpr_do_upcall (void *arg)
97 kpr_upcall_t *u = (kpr_upcall_t *)arg;
106 u->kpru_alive ? "up" : "down",
110 snprintf (nalstr, sizeof(nalstr), "%d", u->kpru_nal_id);
111 snprintf (nidstr, sizeof(nidstr), LPX64, u->kpru_nid);
112 snprintf (whenstr, sizeof(whenstr), "%ld", u->kpru_when);
114 portals_run_upcall (argv);
120 kpr_upcall (int gw_nalid, ptl_nid_t gw_nid, int alive, time_t when)
122 char str[PTL_NALFMT_SIZE];
124 /* May be in arbitrary context */
125 kpr_upcall_t *u = kmalloc (sizeof (kpr_upcall_t), GFP_ATOMIC);
128 CERROR ("Upcall out of memory: nal %d nid "LPX64" (%s) %s\n",
130 portals_nid2str(gw_nalid, gw_nid, str),
131 alive ? "up" : "down");
135 u->kpru_nal_id = gw_nalid;
136 u->kpru_nid = gw_nid;
137 u->kpru_alive = alive;
140 prepare_work (&u->kpru_tq, kpr_do_upcall, u);
141 schedule_work (&u->kpru_tq);
145 kpr_do_notify (int byNal, int gateway_nalid, ptl_nid_t gateway_nid,
146 int alive, time_t when)
150 kpr_nal_entry_t *ne = NULL;
151 kpr_gateway_entry_t *ge = NULL;
155 char str[PTL_NALFMT_SIZE];
157 CDEBUG (D_NET, "%s notifying [%d] "LPX64": %s\n",
158 byNal ? "NAL" : "userspace",
159 gateway_nalid, gateway_nid, alive ? "up" : "down");
161 /* can't do predictions... */
162 do_gettimeofday (&now);
163 if (when > now.tv_sec) {
164 CWARN ("Ignoring prediction from %s of [%d] "LPX64" %s "
165 "%ld seconds in the future\n",
166 byNal ? "NAL" : "userspace",
167 gateway_nalid, gateway_nid,
168 alive ? "up" : "down",
173 LASSERT (when <= now.tv_sec);
175 /* Serialise with lookups (i.e. write lock) */
176 write_lock_irqsave(&kpr_rwlock, flags);
179 list_for_each_safe (e, n, &kpr_gateways) {
181 ge = list_entry(e, kpr_gateway_entry_t, kpge_list);
182 if ((gateway_nalid != 0 &&
183 ge->kpge_nalid != gateway_nalid) ||
184 ge->kpge_nid != gateway_nid)
192 /* gateway not found */
193 write_unlock_irqrestore(&kpr_rwlock, flags);
194 CDEBUG (D_NET, "Gateway not found\n");
198 if (when < ge->kpge_timestamp) {
199 /* out of date information */
200 write_unlock_irqrestore (&kpr_rwlock, flags);
201 CDEBUG (D_NET, "Out of date\n");
205 /* update timestamp */
206 ge->kpge_timestamp = when;
208 if ((!ge->kpge_alive) == (!alive)) {
209 /* new date for old news */
210 write_unlock_irqrestore (&kpr_rwlock, flags);
211 CDEBUG (D_NET, "Old news\n");
215 ge->kpge_alive = alive;
216 CDEBUG(D_NET, "set "LPX64" [%p] %d\n", gateway_nid, ge, alive);
219 /* Reset all gateway weights so the newly-enabled gateway
220 * doesn't have to play catch-up */
221 list_for_each_safe (e, n, &kpr_gateways) {
222 kpr_gateway_entry_t *ge = list_entry(e, kpr_gateway_entry_t,
224 atomic_set (&ge->kpge_weight, 0);
230 /* userland notified me: notify NAL? */
231 ne = kpr_find_nal_entry_locked (ge->kpge_nalid);
233 if (!ne->kpne_shutdown &&
234 ne->kpne_interface.kprni_notify != NULL) {
235 /* take a ref on this NAL until notifying
236 * it has completed... */
237 atomic_inc (&ne->kpne_refcount);
243 write_unlock_irqrestore(&kpr_rwlock, flags);
246 ne->kpne_interface.kprni_notify (ne->kpne_interface.kprni_arg,
248 /* 'ne' can disappear now... */
249 atomic_dec (&ne->kpne_refcount);
253 /* It wasn't userland that notified me... */
254 CWARN ("Upcall: NAL %d NID "LPX64" (%s) is %s\n",
255 gateway_nalid, gateway_nid,
256 portals_nid2str(gateway_nalid, gateway_nid, str),
257 alive ? "alive" : "dead");
258 kpr_upcall (gateway_nalid, gateway_nid, alive, when);
260 CDEBUG (D_NET, " NOT Doing upcall\n");
267 kpr_nal_notify (void *arg, ptl_nid_t peer, int alive, time_t when)
269 kpr_nal_entry_t *ne = (kpr_nal_entry_t *)arg;
271 kpr_do_notify (1, ne->kpne_interface.kprni_nalid, peer, alive, when);
275 kpr_shutdown_nal (void *arg)
278 kpr_nal_entry_t *ne = (kpr_nal_entry_t *)arg;
280 CDEBUG (D_NET, "Shutting down NAL %d\n", ne->kpne_interface.kprni_nalid);
282 LASSERT (!ne->kpne_shutdown);
283 LASSERT (!in_interrupt());
285 write_lock_irqsave (&kpr_rwlock, flags);
286 ne->kpne_shutdown = 1;
287 write_unlock_irqrestore (&kpr_rwlock, flags);
291 kpr_deregister_nal (void *arg)
294 kpr_nal_entry_t *ne = (kpr_nal_entry_t *)arg;
296 CDEBUG (D_NET, "Deregister NAL %d\n", ne->kpne_interface.kprni_nalid);
298 LASSERT (ne->kpne_shutdown); /* caller must have issued shutdown already */
299 LASSERT (!in_interrupt());
301 write_lock_irqsave (&kpr_rwlock, flags);
302 list_del (&ne->kpne_list);
303 write_unlock_irqrestore (&kpr_rwlock, flags);
305 /* Wait until all outstanding messages/notifications have completed */
306 while (atomic_read (&ne->kpne_refcount) != 0)
308 CDEBUG (D_NET, "Waiting for refcount on NAL %d to reach zero (%d)\n",
309 ne->kpne_interface.kprni_nalid, atomic_read (&ne->kpne_refcount));
311 set_current_state (TASK_UNINTERRUPTIBLE);
312 schedule_timeout (HZ);
315 PORTAL_FREE (ne, sizeof (*ne));
320 kpr_ge_isbetter (kpr_gateway_entry_t *ge1, kpr_gateway_entry_t *ge2)
322 const int significant_bits = 0x00ffffff;
323 /* We use atomic_t to record/compare route weights for
324 * load-balancing. Here we limit ourselves to only using
325 * 'significant_bits' when we do an 'after' comparison */
327 int diff = (atomic_read (&ge1->kpge_weight) -
328 atomic_read (&ge2->kpge_weight)) & significant_bits;
329 int rc = (diff > (significant_bits >> 1));
331 CDEBUG(D_NET, "[%p]"LPX64"=%d %s [%p]"LPX64"=%d\n",
332 ge1, ge1->kpge_nid, atomic_read (&ge1->kpge_weight),
334 ge2, ge2->kpge_nid, atomic_read (&ge2->kpge_weight));
340 kpr_update_weight (kpr_gateway_entry_t *ge, int nob)
342 int weight = 1 + (nob + sizeof (ptl_hdr_t)/2)/sizeof (ptl_hdr_t);
344 /* We've chosen this route entry (i.e. gateway) to forward payload
345 * of length 'nob'; update the route's weight to make it less
346 * favoured. Note that the weight is 1 plus the payload size
347 * rounded and scaled to the portals header size, so we get better
348 * use of the significant bits in kpge_weight. */
350 CDEBUG(D_NET, "gateway [%p]"LPX64" += %d\n", ge,
351 ge->kpge_nid, weight);
353 atomic_add (weight, &ge->kpge_weight);
357 kpr_lookup_target (void *arg, ptl_nid_t target_nid, int nob,
358 ptl_nid_t *gateway_nidp)
360 kpr_nal_entry_t *ne = (kpr_nal_entry_t *)arg;
362 kpr_route_entry_t *re;
363 kpr_gateway_entry_t *ge = NULL;
366 /* Caller wants to know if 'target_nid' can be reached via a gateway
367 * ON HER OWN NETWORK */
369 CDEBUG (D_NET, "lookup "LPX64" from NAL %d\n", target_nid,
370 ne->kpne_interface.kprni_nalid);
371 LASSERT (!in_interrupt());
373 read_lock (&kpr_rwlock);
375 if (ne->kpne_shutdown) { /* caller is shutting down */
376 read_unlock (&kpr_rwlock);
380 /* Search routes for one that has a gateway to target_nid on the callers network */
382 list_for_each (e, &kpr_routes) {
383 re = list_entry (e, kpr_route_entry_t, kpre_list);
385 if (re->kpre_lo_nid > target_nid ||
386 re->kpre_hi_nid < target_nid)
389 /* found table entry */
391 if (re->kpre_gateway->kpge_nalid != ne->kpne_interface.kprni_nalid ||
392 !re->kpre_gateway->kpge_alive) {
393 /* different NAL or gateway down */
399 kpr_ge_isbetter (re->kpre_gateway, ge))
400 ge = re->kpre_gateway;
404 kpr_update_weight (ge, nob);
405 *gateway_nidp = ge->kpge_nid;
409 read_unlock (&kpr_rwlock);
411 /* NB can't deref 're' now; it might have been removed! */
413 CDEBUG (D_NET, "lookup "LPX64" from NAL %d: %d ("LPX64")\n",
414 target_nid, ne->kpne_interface.kprni_nalid, rc,
415 (rc == 0) ? *gateway_nidp : (ptl_nid_t)0);
420 kpr_find_nal_entry_locked (int nal_id)
424 /* Called with kpr_rwlock held */
426 list_for_each (e, &kpr_nals) {
427 kpr_nal_entry_t *ne = list_entry (e, kpr_nal_entry_t, kpne_list);
429 if (nal_id != ne->kpne_interface.kprni_nalid) /* no match */
439 kpr_forward_packet (void *arg, kpr_fwd_desc_t *fwd)
441 kpr_nal_entry_t *src_ne = (kpr_nal_entry_t *)arg;
442 ptl_nid_t target_nid = fwd->kprfd_target_nid;
443 int nob = fwd->kprfd_nob;
444 kpr_gateway_entry_t *ge = NULL;
445 kpr_nal_entry_t *dst_ne = NULL;
447 kpr_route_entry_t *re;
448 kpr_nal_entry_t *tmp_ne;
451 CDEBUG (D_NET, "forward [%p] "LPX64" from NAL %d\n", fwd,
452 target_nid, src_ne->kpne_interface.kprni_nalid);
454 LASSERT (nob == lib_kiov_nob (fwd->kprfd_niov, fwd->kprfd_kiov));
455 LASSERT (!in_interrupt());
457 read_lock (&kpr_rwlock);
459 kpr_fwd_packets++; /* (loose) stats accounting */
460 kpr_fwd_bytes += nob + sizeof(ptl_hdr_t);
462 if (src_ne->kpne_shutdown) { /* caller is shutting down */
467 fwd->kprfd_router_arg = src_ne; /* stash caller's nal entry */
469 /* Search routes for one that has a gateway to target_nid NOT on the caller's network */
471 list_for_each (e, &kpr_routes) {
472 re = list_entry (e, kpr_route_entry_t, kpre_list);
474 if (re->kpre_lo_nid > target_nid || /* no match */
475 re->kpre_hi_nid < target_nid)
478 if (re->kpre_gateway->kpge_nalid == src_ne->kpne_interface.kprni_nalid)
479 continue; /* don't route to same NAL */
481 if (!re->kpre_gateway->kpge_alive)
482 continue; /* gateway is dead */
484 tmp_ne = kpr_find_nal_entry_locked (re->kpre_gateway->kpge_nalid);
486 if (tmp_ne == NULL ||
487 tmp_ne->kpne_shutdown) {
488 /* NAL must be registered and not shutting down */
493 kpr_ge_isbetter (re->kpre_gateway, ge)) {
494 ge = re->kpre_gateway;
500 LASSERT (dst_ne != NULL);
502 kpr_update_weight (ge, nob);
504 fwd->kprfd_gateway_nid = ge->kpge_nid;
505 atomic_inc (&src_ne->kpne_refcount); /* source and dest nals are */
506 atomic_inc (&dst_ne->kpne_refcount); /* busy until fwd completes */
507 atomic_inc (&kpr_queue_depth);
509 read_unlock (&kpr_rwlock);
511 CDEBUG (D_NET, "forward [%p] "LPX64" from NAL %d: "
512 "to "LPX64" on NAL %d\n",
513 fwd, target_nid, src_ne->kpne_interface.kprni_nalid,
514 fwd->kprfd_gateway_nid, dst_ne->kpne_interface.kprni_nalid);
516 dst_ne->kpne_interface.kprni_fwd (dst_ne->kpne_interface.kprni_arg, fwd);
524 CDEBUG (D_NET, "Failed to forward [%p] "LPX64" from NAL %d: %d\n",
525 fwd, target_nid, src_ne->kpne_interface.kprni_nalid, rc);
527 (fwd->kprfd_callback)(fwd->kprfd_callback_arg, rc);
529 read_unlock (&kpr_rwlock);
533 kpr_complete_packet (void *arg, kpr_fwd_desc_t *fwd, int error)
535 kpr_nal_entry_t *dst_ne = (kpr_nal_entry_t *)arg;
536 kpr_nal_entry_t *src_ne = (kpr_nal_entry_t *)fwd->kprfd_router_arg;
538 CDEBUG (D_NET, "complete(1) [%p] from NAL %d to NAL %d: %d\n", fwd,
539 src_ne->kpne_interface.kprni_nalid, dst_ne->kpne_interface.kprni_nalid, error);
541 atomic_dec (&dst_ne->kpne_refcount); /* CAVEAT EMPTOR dst_ne can disappear now!!! */
543 (fwd->kprfd_callback)(fwd->kprfd_callback_arg, error);
545 CDEBUG (D_NET, "complete(2) [%p] from NAL %d: %d\n", fwd,
546 src_ne->kpne_interface.kprni_nalid, error);
548 atomic_dec (&kpr_queue_depth);
549 atomic_dec (&src_ne->kpne_refcount); /* CAVEAT EMPTOR src_ne can disappear now!!! */
553 kpr_add_route (int gateway_nalid, ptl_nid_t gateway_nid,
554 ptl_nid_t lo_nid, ptl_nid_t hi_nid)
558 kpr_route_entry_t *re;
559 kpr_gateway_entry_t *ge;
562 CDEBUG(D_NET, "Add route: %d "LPX64" : "LPX64" - "LPX64"\n",
563 gateway_nalid, gateway_nid, lo_nid, hi_nid);
565 if (gateway_nalid == PTL_NID_ANY ||
566 lo_nid == PTL_NID_ANY ||
567 hi_nid == PTL_NID_ANY ||
571 PORTAL_ALLOC (ge, sizeof (*ge));
575 ge->kpge_nalid = gateway_nalid;
576 ge->kpge_nid = gateway_nid;
578 ge->kpge_timestamp = 0;
579 ge->kpge_refcount = 0;
580 atomic_set (&ge->kpge_weight, 0);
582 PORTAL_ALLOC (re, sizeof (*re));
584 PORTAL_FREE (ge, sizeof (*ge));
588 re->kpre_lo_nid = lo_nid;
589 re->kpre_hi_nid = hi_nid;
591 LASSERT(!in_interrupt());
592 write_lock_irqsave (&kpr_rwlock, flags);
594 list_for_each (e, &kpr_gateways) {
595 kpr_gateway_entry_t *ge2 = list_entry(e, kpr_gateway_entry_t,
598 if (ge2->kpge_nalid == gateway_nalid &&
599 ge2->kpge_nid == gateway_nid) {
600 PORTAL_FREE (ge, sizeof (*ge));
608 /* Adding a new gateway... */
610 list_add (&ge->kpge_list, &kpr_gateways);
612 /* ...zero all gateway weights so this one doesn't have to
615 list_for_each (e, &kpr_gateways) {
616 kpr_gateway_entry_t *ge2 = list_entry(e, kpr_gateway_entry_t,
618 atomic_set (&ge2->kpge_weight, 0);
623 re->kpre_gateway = ge;
625 list_add (&re->kpre_list, &kpr_routes);
627 write_unlock_irqrestore (&kpr_rwlock, flags);
632 kpr_sys_notify (int gateway_nalid, ptl_nid_t gateway_nid,
633 int alive, time_t when)
635 return (kpr_do_notify (0, gateway_nalid, gateway_nid, alive, when));
639 kpr_del_route (int gw_nalid, ptl_nid_t gw_nid,
640 ptl_nid_t lo, ptl_nid_t hi)
642 int specific = (lo != PTL_NID_ANY);
648 CDEBUG(D_NET, "Del route [%d] "LPX64" : "LPX64" - "LPX64"\n",
649 gw_nalid, gw_nid, lo, hi);
651 LASSERT(!in_interrupt());
653 /* NB Caller may specify either all routes via the given gateway
654 * (lo/hi == PTL_NID_ANY) or a specific route entry (lo/hi are
657 if (specific ? (hi == PTL_NID_ANY || hi < lo) : (hi != PTL_NID_ANY))
660 write_lock_irqsave(&kpr_rwlock, flags);
662 list_for_each_safe (e, n, &kpr_routes) {
663 kpr_route_entry_t *re = list_entry(e, kpr_route_entry_t,
665 kpr_gateway_entry_t *ge = re->kpre_gateway;
667 if (ge->kpge_nalid != gw_nalid ||
668 ge->kpge_nid != gw_nid ||
670 (lo != re->kpre_lo_nid || hi != re->kpre_hi_nid)))
675 if (--ge->kpge_refcount == 0) {
676 list_del (&ge->kpge_list);
677 PORTAL_FREE (ge, sizeof (*ge));
680 list_del (&re->kpre_list);
681 PORTAL_FREE(re, sizeof (*re));
687 write_unlock_irqrestore(&kpr_rwlock, flags);
692 kpr_get_route (int idx, __u32 *gateway_nalid, ptl_nid_t *gateway_nid,
693 ptl_nid_t *lo_nid, ptl_nid_t *hi_nid, __u32 *alive)
697 LASSERT (!in_interrupt());
698 read_lock(&kpr_rwlock);
700 for (e = kpr_routes.next; e != &kpr_routes; e = e->next) {
701 kpr_route_entry_t *re = list_entry(e, kpr_route_entry_t,
703 kpr_gateway_entry_t *ge = re->kpre_gateway;
706 *gateway_nalid = ge->kpge_nalid;
707 *gateway_nid = ge->kpge_nid;
708 *alive = ge->kpge_alive;
709 *lo_nid = re->kpre_lo_nid;
710 *hi_nid = re->kpre_hi_nid;
712 read_unlock(&kpr_rwlock);
717 read_unlock (&kpr_rwlock);
722 kpr_nal_cmd(struct portals_cfg *pcfg, void * private)
727 switch(pcfg->pcfg_command) {
729 CDEBUG(D_IOCTL, "Inappropriate cmd: %d\n", pcfg->pcfg_command);
732 case NAL_CMD_ADD_ROUTE:
733 CDEBUG(D_IOCTL, "Adding route: [%d] "LPU64" : "LPU64" - "LPU64"\n",
734 pcfg->pcfg_nal, pcfg->pcfg_nid,
735 pcfg->pcfg_nid2, pcfg->pcfg_nid3);
736 err = kpr_add_route(pcfg->pcfg_gw_nal, pcfg->pcfg_nid,
737 pcfg->pcfg_nid2, pcfg->pcfg_nid3);
740 case NAL_CMD_DEL_ROUTE:
741 CDEBUG (D_IOCTL, "Removing routes via [%d] "LPU64" : "LPU64" - "LPU64"\n",
742 pcfg->pcfg_gw_nal, pcfg->pcfg_nid,
743 pcfg->pcfg_nid2, pcfg->pcfg_nid3);
744 err = kpr_del_route (pcfg->pcfg_gw_nal, pcfg->pcfg_nid,
745 pcfg->pcfg_nid2, pcfg->pcfg_nid3);
748 case NAL_CMD_NOTIFY_ROUTER: {
749 CDEBUG (D_IOCTL, "Notifying peer [%d] "LPU64" %s @ %ld\n",
750 pcfg->pcfg_gw_nal, pcfg->pcfg_nid,
751 pcfg->pcfg_flags ? "Enabling" : "Disabling",
752 (time_t)pcfg->pcfg_nid3);
754 err = kpr_sys_notify (pcfg->pcfg_gw_nal, pcfg->pcfg_nid,
755 pcfg->pcfg_flags, (time_t)pcfg->pcfg_nid3);
759 case NAL_CMD_GET_ROUTE:
760 CDEBUG (D_IOCTL, "Getting route [%d]\n", pcfg->pcfg_count);
761 err = kpr_get_route(pcfg->pcfg_count, &pcfg->pcfg_gw_nal,
763 &pcfg->pcfg_nid2, &pcfg->pcfg_nid3,
771 static void /*__exit*/
774 LASSERT (list_empty (&kpr_nals));
776 libcfs_nal_cmd_unregister(ROUTER);
778 PORTAL_SYMBOL_UNREGISTER(kpr_router_interface);
782 while (!list_empty (&kpr_routes)) {
783 kpr_route_entry_t *re = list_entry(kpr_routes.next,
787 list_del(&re->kpre_list);
788 PORTAL_FREE(re, sizeof (*re));
791 CDEBUG(D_MALLOC, "kpr_finalise: kmem back to %d\n",
792 atomic_read(&portal_kmemory));
796 kpr_initialise (void)
800 CDEBUG(D_MALLOC, "kpr_initialise: kmem %d\n",
801 atomic_read(&portal_kmemory));
805 rc = libcfs_nal_cmd_register(ROUTER, kpr_nal_cmd, NULL);
807 CERROR("Can't register nal cmd handler\n");
811 PORTAL_SYMBOL_REGISTER(kpr_router_interface);
815 MODULE_AUTHOR("Eric Barton");
816 MODULE_DESCRIPTION("Kernel Portals Router v0.01");
817 MODULE_LICENSE("GPL");
819 module_init (kpr_initialise);
820 module_exit (kpr_finalise);
822 EXPORT_SYMBOL (kpr_router_interface);