2 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
4 * Copyright (c) 2011, 2012, Intel Corporation.
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.
24 #define DEBUG_SUBSYSTEM S_LNET
25 #include <linux/libcfs/libcfs.h>
26 #include <linux/lnet/lib-lnet.h>
28 #if defined(LNET_ROUTER)
30 /* This is really lnet_proc.c. You might need to update sanity test 215
31 * if any file format is changed. */
33 static ctl_table_header_t *lnet_table_header;
35 #define CTL_LNET (0x100)
37 PSDEV_LNET_STATS = 100,
46 #define LNET_LOFFT_BITS (sizeof(loff_t) * 8)
48 * NB: max allowed LNET_CPT_BITS is 8 on 64-bit system and 2 on 32-bit system
50 #define LNET_PROC_CPT_BITS (LNET_CPT_BITS + 1)
51 /* change version, 16 bits or 8 bits */
52 #define LNET_PROC_VER_BITS MAX(((MIN(LNET_LOFFT_BITS, 64)) / 4), 8)
54 #define LNET_PROC_HASH_BITS LNET_PEER_HASH_BITS
56 * bits for peer hash offset
57 * NB: we don't use the highest bit of *ppos because it's signed
59 #define LNET_PROC_HOFF_BITS (LNET_LOFFT_BITS - \
60 LNET_PROC_CPT_BITS - \
61 LNET_PROC_VER_BITS - \
62 LNET_PROC_HASH_BITS - 1)
63 /* bits for hash index + position */
64 #define LNET_PROC_HPOS_BITS (LNET_PROC_HASH_BITS + LNET_PROC_HOFF_BITS)
65 /* bits for peer hash table + hash version */
66 #define LNET_PROC_VPOS_BITS (LNET_PROC_HPOS_BITS + LNET_PROC_VER_BITS)
68 #define LNET_PROC_CPT_MASK ((1ULL << LNET_PROC_CPT_BITS) - 1)
69 #define LNET_PROC_VER_MASK ((1ULL << LNET_PROC_VER_BITS) - 1)
70 #define LNET_PROC_HASH_MASK ((1ULL << LNET_PROC_HASH_BITS) - 1)
71 #define LNET_PROC_HOFF_MASK ((1ULL << LNET_PROC_HOFF_BITS) - 1)
73 #define LNET_PROC_CPT_GET(pos) \
74 (int)(((pos) >> LNET_PROC_VPOS_BITS) & LNET_PROC_CPT_MASK)
76 #define LNET_PROC_VER_GET(pos) \
77 (int)(((pos) >> LNET_PROC_HPOS_BITS) & LNET_PROC_VER_MASK)
79 #define LNET_PROC_HASH_GET(pos) \
80 (int)(((pos) >> LNET_PROC_HOFF_BITS) & LNET_PROC_HASH_MASK)
82 #define LNET_PROC_HOFF_GET(pos) \
83 (int)((pos) & LNET_PROC_HOFF_MASK)
85 #define LNET_PROC_POS_MAKE(cpt, ver, hash, off) \
86 (((((loff_t)(cpt)) & LNET_PROC_CPT_MASK) << LNET_PROC_VPOS_BITS) | \
87 ((((loff_t)(ver)) & LNET_PROC_VER_MASK) << LNET_PROC_HPOS_BITS) | \
88 ((((loff_t)(hash)) & LNET_PROC_HASH_MASK) << LNET_PROC_HOFF_BITS) | \
89 ((off) & LNET_PROC_HOFF_MASK))
91 #define LNET_PROC_VERSION(v) ((unsigned int)((v) & LNET_PROC_VER_MASK))
93 static int __proc_lnet_stats(void *data, int write,
94 loff_t pos, void *buffer, int nob)
97 lnet_counters_t *ctrs;
100 const int tmpsiz = 256; /* 7 %u and 4 LPU64 */
103 lnet_counters_reset();
109 LIBCFS_ALLOC(ctrs, sizeof(*ctrs));
113 LIBCFS_ALLOC(tmpstr, tmpsiz);
114 if (tmpstr == NULL) {
115 LIBCFS_FREE(ctrs, sizeof(*ctrs));
119 lnet_counters_get(ctrs);
121 len = snprintf(tmpstr, tmpsiz,
122 "%u %u %u %u %u %u %u "LPU64" "LPU64" "
124 ctrs->msgs_alloc, ctrs->msgs_max,
126 ctrs->send_count, ctrs->recv_count,
127 ctrs->route_count, ctrs->drop_count,
128 ctrs->send_length, ctrs->recv_length,
129 ctrs->route_length, ctrs->drop_length);
131 if (pos >= min_t(int, len, strlen(tmpstr)))
134 rc = cfs_trace_copyout_string(buffer, nob,
137 LIBCFS_FREE(tmpstr, tmpsiz);
138 LIBCFS_FREE(ctrs, sizeof(*ctrs));
142 DECLARE_PROC_HANDLER(proc_lnet_stats);
144 int LL_PROC_PROTO(proc_lnet_routes)
146 const int tmpsiz = 256;
154 DECLARE_LL_PROC_PPOS_DECL;
156 CLASSERT(sizeof(loff_t) >= 4);
158 off = LNET_PROC_HOFF_GET(*ppos);
159 ver = LNET_PROC_VER_GET(*ppos);
166 LIBCFS_ALLOC(tmpstr, tmpsiz);
170 s = tmpstr; /* points to current position in tmpstr[] */
173 s += snprintf(s, tmpstr + tmpsiz - s, "Routing %s\n",
174 the_lnet.ln_routing ? "enabled" : "disabled");
175 LASSERT(tmpstr + tmpsiz - s > 0);
177 s += snprintf(s, tmpstr + tmpsiz - s, "%-8s %4s %8s %7s %s\n",
178 "net", "hops", "priority", "state", "router");
179 LASSERT(tmpstr + tmpsiz - s > 0);
182 ver = (unsigned int)the_lnet.ln_remote_nets_version;
184 *ppos = LNET_PROC_POS_MAKE(0, ver, 0, off);
188 lnet_route_t *route = NULL;
189 lnet_remotenet_t *rnet = NULL;
191 struct list_head *rn_list;
196 if (ver != LNET_PROC_VERSION(the_lnet.ln_remote_nets_version)) {
198 LIBCFS_FREE(tmpstr, tmpsiz);
202 for (i = 0; i < LNET_REMOTE_NETS_HASH_SIZE && route == NULL;
204 rn_list = &the_lnet.ln_remote_nets_hash[i];
208 while (n != rn_list && route == NULL) {
209 rnet = list_entry(n, lnet_remotenet_t,
212 r = rnet->lrn_routes.next;
214 while (r != &rnet->lrn_routes) {
216 list_entry(r, lnet_route_t,
232 __u32 net = rnet->lrn_net;
233 unsigned int hops = route->lr_hops;
234 unsigned int priority = route->lr_priority;
235 lnet_nid_t nid = route->lr_gateway->lp_nid;
236 int alive = route->lr_gateway->lp_alive;
238 s += snprintf(s, tmpstr + tmpsiz - s,
239 "%-8s %4u %8u %7s %s\n",
240 libcfs_net2str(net), hops,
242 alive ? "up" : "down",
243 libcfs_nid2str(nid));
244 LASSERT(tmpstr + tmpsiz - s > 0);
250 len = s - tmpstr; /* how many bytes was written */
252 if (len > *lenp) { /* linux-supplied buffer is too small */
254 } else if (len > 0) { /* wrote something */
255 if (copy_to_user(buffer, tmpstr, len))
259 *ppos = LNET_PROC_POS_MAKE(0, ver, 0, off);
263 LIBCFS_FREE(tmpstr, tmpsiz);
271 int LL_PROC_PROTO(proc_lnet_routers)
276 const int tmpsiz = 256;
281 DECLARE_LL_PROC_PPOS_DECL;
283 off = LNET_PROC_HOFF_GET(*ppos);
284 ver = LNET_PROC_VER_GET(*ppos);
291 LIBCFS_ALLOC(tmpstr, tmpsiz);
295 s = tmpstr; /* points to current position in tmpstr[] */
298 s += snprintf(s, tmpstr + tmpsiz - s,
299 "%-4s %7s %9s %6s %12s %9s %8s %7s %s\n",
300 "ref", "rtr_ref", "alive_cnt", "state",
301 "last_ping", "ping_sent", "deadline",
302 "down_ni", "router");
303 LASSERT(tmpstr + tmpsiz - s > 0);
306 ver = (unsigned int)the_lnet.ln_routers_version;
308 *ppos = LNET_PROC_POS_MAKE(0, ver, 0, off);
311 struct lnet_peer *peer = NULL;
316 if (ver != LNET_PROC_VERSION(the_lnet.ln_routers_version)) {
319 LIBCFS_FREE(tmpstr, tmpsiz);
323 r = the_lnet.ln_routers.next;
325 while (r != &the_lnet.ln_routers) {
326 lnet_peer_t *lp = list_entry(r, lnet_peer_t,
339 lnet_nid_t nid = peer->lp_nid;
340 cfs_time_t now = cfs_time_current();
341 cfs_time_t deadline = peer->lp_ping_deadline;
342 int nrefs = peer->lp_refcount;
343 int nrtrrefs = peer->lp_rtr_refcount;
344 int alive_cnt = peer->lp_alive_count;
345 int alive = peer->lp_alive;
346 int pingsent = !peer->lp_ping_notsent;
347 int last_ping = cfs_duration_sec(cfs_time_sub(now,
348 peer->lp_ping_timestamp));
352 if ((peer->lp_ping_feats &
353 LNET_PING_FEAT_NI_STATUS) != 0) {
354 list_for_each_entry(rtr, &peer->lp_routes,
356 /* downis on any route should be the
357 * number of downis on the gateway */
358 if (rtr->lr_downis != 0) {
359 down_ni = rtr->lr_downis;
366 s += snprintf(s, tmpstr + tmpsiz - s,
367 "%-4d %7d %9d %6s %12d %9d %8s %7d %s\n",
368 nrefs, nrtrrefs, alive_cnt,
369 alive ? "up" : "down", last_ping,
370 pingsent, "NA", down_ni,
371 libcfs_nid2str(nid));
373 s += snprintf(s, tmpstr + tmpsiz - s,
374 "%-4d %7d %9d %6s %12d %9d %8lu %7d %s\n",
375 nrefs, nrtrrefs, alive_cnt,
376 alive ? "up" : "down", last_ping,
378 cfs_duration_sec(cfs_time_sub(deadline, now)),
379 down_ni, libcfs_nid2str(nid));
380 LASSERT(tmpstr + tmpsiz - s > 0);
386 len = s - tmpstr; /* how many bytes was written */
388 if (len > *lenp) { /* linux-supplied buffer is too small */
390 } else if (len > 0) { /* wrote something */
391 if (copy_to_user(buffer, tmpstr, len))
395 *ppos = LNET_PROC_POS_MAKE(0, ver, 0, off);
399 LIBCFS_FREE(tmpstr, tmpsiz);
407 int LL_PROC_PROTO(proc_lnet_peers)
409 const int tmpsiz = 256;
410 struct lnet_peer_table *ptable;
413 int cpt = LNET_PROC_CPT_GET(*ppos);
414 int ver = LNET_PROC_VER_GET(*ppos);
415 int hash = LNET_PROC_HASH_GET(*ppos);
416 int hoff = LNET_PROC_HOFF_GET(*ppos);
420 CLASSERT(LNET_PROC_HASH_BITS >= LNET_PEER_HASH_BITS);
426 if (cpt >= LNET_CPT_NUMBER) {
431 LIBCFS_ALLOC(tmpstr, tmpsiz);
435 s = tmpstr; /* points to current position in tmpstr[] */
438 s += snprintf(s, tmpstr + tmpsiz - s,
439 "%-24s %4s %5s %5s %5s %5s %5s %5s %5s %s\n",
440 "nid", "refs", "state", "last", "max",
441 "rtr", "min", "tx", "min", "queue");
442 LASSERT(tmpstr + tmpsiz - s > 0);
446 struct lnet_peer *peer;
455 ptable = the_lnet.ln_peer_tables[cpt];
457 ver = LNET_PROC_VERSION(ptable->pt_version);
459 if (ver != LNET_PROC_VERSION(ptable->pt_version)) {
460 lnet_net_unlock(cpt);
461 LIBCFS_FREE(tmpstr, tmpsiz);
465 while (hash < LNET_PEER_HASH_SIZE) {
467 p = ptable->pt_hash[hash].next;
469 while (p != &ptable->pt_hash[hash]) {
470 lnet_peer_t *lp = list_entry(p, lnet_peer_t,
475 /* minor optimization: start from idx+1
476 * on next iteration if we've just
477 * drained lp_hashlist */
478 if (lp->lp_hashlist.next ==
479 &ptable->pt_hash[hash]) {
490 p = lp->lp_hashlist.next;
502 lnet_nid_t nid = peer->lp_nid;
503 int nrefs = peer->lp_refcount;
505 char *aliveness = "NA";
506 int maxcr = peer->lp_ni->ni_peertxcredits;
507 int txcr = peer->lp_txcredits;
508 int mintxcr = peer->lp_mintxcredits;
509 int rtrcr = peer->lp_rtrcredits;
510 int minrtrcr = peer->lp_minrtrcredits;
511 int txqnob = peer->lp_txqnob;
513 if (lnet_isrouter(peer) ||
514 lnet_peer_aliveness_enabled(peer))
515 aliveness = peer->lp_alive ? "up" : "down";
517 if (lnet_peer_aliveness_enabled(peer)) {
518 cfs_time_t now = cfs_time_current();
519 cfs_duration_t delta;
521 delta = cfs_time_sub(now, peer->lp_last_alive);
522 lastalive = cfs_duration_sec(delta);
524 /* No need to mess up peers contents with
525 * arbitrarily long integers - it suffices to
526 * know that lastalive is more than 10000s old
528 if (lastalive >= 10000)
532 lnet_net_unlock(cpt);
534 s += snprintf(s, tmpstr + tmpsiz - s,
535 "%-24s %4d %5s %5d %5d %5d %5d %5d %5d %d\n",
536 libcfs_nid2str(nid), nrefs, aliveness,
537 lastalive, maxcr, rtrcr, minrtrcr, txcr,
539 LASSERT(tmpstr + tmpsiz - s > 0);
541 } else { /* peer is NULL */
542 lnet_net_unlock(cpt);
545 if (hash == LNET_PEER_HASH_SIZE) {
549 if (peer == NULL && cpt < LNET_CPT_NUMBER)
554 len = s - tmpstr; /* how many bytes was written */
556 if (len > *lenp) { /* linux-supplied buffer is too small */
558 } else if (len > 0) { /* wrote something */
559 if (copy_to_user(buffer, tmpstr, len))
562 *ppos = LNET_PROC_POS_MAKE(cpt, ver, hash, hoff);
565 LIBCFS_FREE(tmpstr, tmpsiz);
573 static int __proc_lnet_buffers(void *data, int write,
574 loff_t pos, void *buffer, int nob)
586 /* (4 %d) * 4 * LNET_CPT_NUMBER */
587 tmpsiz = 64 * (LNET_NRBPOOLS + 1) * LNET_CPT_NUMBER;
588 LIBCFS_ALLOC(tmpstr, tmpsiz);
592 s = tmpstr; /* points to current position in tmpstr[] */
594 s += snprintf(s, tmpstr + tmpsiz - s,
596 "pages", "count", "credits", "min");
597 LASSERT(tmpstr + tmpsiz - s > 0);
599 if (the_lnet.ln_rtrpools == NULL)
600 goto out; /* I'm not a router */
602 for (idx = 0; idx < LNET_NRBPOOLS; idx++) {
603 lnet_rtrbufpool_t *rbp;
605 lnet_net_lock(LNET_LOCK_EX);
606 cfs_percpt_for_each(rbp, i, the_lnet.ln_rtrpools) {
607 s += snprintf(s, tmpstr + tmpsiz - s,
610 rbp[idx].rbp_nbuffers,
611 rbp[idx].rbp_credits,
612 rbp[idx].rbp_mincredits);
613 LASSERT(tmpstr + tmpsiz - s > 0);
615 lnet_net_unlock(LNET_LOCK_EX);
621 if (pos >= min_t(int, len, strlen(tmpstr)))
624 rc = cfs_trace_copyout_string(buffer, nob,
627 LIBCFS_FREE(tmpstr, tmpsiz);
631 DECLARE_PROC_HANDLER(proc_lnet_buffers);
633 int LL_PROC_PROTO(proc_lnet_nis)
635 int tmpsiz = 128 * LNET_CPT_NUMBER;
641 DECLARE_LL_PROC_PPOS_DECL;
648 LIBCFS_ALLOC(tmpstr, tmpsiz);
652 s = tmpstr; /* points to current position in tmpstr[] */
655 s += snprintf(s, tmpstr + tmpsiz - s,
656 "%-24s %6s %5s %4s %4s %4s %5s %5s %5s\n",
657 "nid", "status", "alive", "refs", "peer",
658 "rtr", "max", "tx", "min");
659 LASSERT(tmpstr + tmpsiz - s > 0);
662 lnet_ni_t *ni = NULL;
663 int skip = *ppos - 1;
667 n = the_lnet.ln_nis.next;
669 while (n != &the_lnet.ln_nis) {
670 lnet_ni_t *a_ni = list_entry(n, lnet_ni_t, ni_list);
682 struct lnet_tx_queue *tq;
684 long now = cfs_time_current_sec();
689 if (the_lnet.ln_routing)
690 last_alive = now - ni->ni_last_alive;
692 /* @lo forever alive */
693 if (ni->ni_lnd->lnd_type == LOLND)
697 LASSERT(ni->ni_status != NULL);
698 stat = (ni->ni_status->ns_status ==
699 LNET_NI_STATUS_UP) ? "up" : "down";
702 /* we actually output credits information for
703 * TX queue of each partition */
704 cfs_percpt_for_each(tq, i, ni->ni_tx_queues) {
705 for (j = 0; ni->ni_cpts != NULL &&
706 j < ni->ni_ncpts; j++) {
707 if (i == ni->ni_cpts[j])
711 if (j == ni->ni_ncpts)
717 s += snprintf(s, tmpstr + tmpsiz - s,
718 "%-24s %6s %5d %4d %4d %4d %5d %5d %5d\n",
719 libcfs_nid2str(ni->ni_nid), stat,
720 last_alive, *ni->ni_refs[i],
721 ni->ni_peertxcredits,
722 ni->ni_peerrtrcredits,
724 tq->tq_credits, tq->tq_credits_min);
728 LASSERT(tmpstr + tmpsiz - s > 0);
734 len = s - tmpstr; /* how many bytes was written */
736 if (len > *lenp) { /* linux-supplied buffer is too small */
738 } else if (len > 0) { /* wrote something */
739 if (copy_to_user(buffer, tmpstr, len))
745 LIBCFS_FREE(tmpstr, tmpsiz);
753 struct lnet_portal_rotors {
759 static struct lnet_portal_rotors portal_rotors[] = {
761 .pr_value = LNET_PTL_ROTOR_OFF,
763 .pr_desc = "Turn off message rotor for wildcard portals"
766 .pr_value = LNET_PTL_ROTOR_ON,
768 .pr_desc = "round-robin dispatch all PUT messages for "
772 .pr_value = LNET_PTL_ROTOR_RR_RT,
774 .pr_desc = "round-robin dispatch routed PUT message for "
778 .pr_value = LNET_PTL_ROTOR_HASH_RT,
779 .pr_name = "HASH_RT",
780 .pr_desc = "dispatch routed PUT message by hashing source "
781 "NID for wildcard portals"
790 extern int portal_rotor;
792 static int __proc_lnet_portal_rotor(void *data, int write,
793 loff_t pos, void *buffer, int nob)
795 const int buf_len = 128;
801 LIBCFS_ALLOC(buf, buf_len);
808 for (i = 0; portal_rotors[i].pr_value >= 0; i++) {
809 if (portal_rotors[i].pr_value == portal_rotor)
813 LASSERT(portal_rotors[i].pr_value == portal_rotor);
816 rc = snprintf(buf, buf_len,
817 "{\n\tportals: all\n"
818 "\trotor: %s\n\tdescription: %s\n}",
819 portal_rotors[i].pr_name,
820 portal_rotors[i].pr_desc);
822 if (pos >= min_t(int, rc, buf_len)) {
825 rc = cfs_trace_copyout_string(buffer, nob,
831 rc = cfs_trace_copyin_string(buf, buf_len, buffer, nob);
835 tmp = cfs_trimwhite(buf);
839 for (i = 0; portal_rotors[i].pr_name != NULL; i++) {
840 if (cfs_strncasecmp(portal_rotors[i].pr_name, tmp,
841 strlen(portal_rotors[i].pr_name)) == 0) {
842 portal_rotor = portal_rotors[i].pr_value;
849 LIBCFS_FREE(buf, buf_len);
852 DECLARE_PROC_HANDLER(proc_lnet_portal_rotor);
854 static ctl_table_t lnet_table[] = {
856 * NB No .strategy entries have been provided since sysctl(8) prefers
857 * to go via /proc for portability.
862 .proc_handler = &proc_lnet_stats,
865 .procname = "routes",
867 .proc_handler = &proc_lnet_routes,
870 .procname = "routers",
872 .proc_handler = &proc_lnet_routers,
877 .proc_handler = &proc_lnet_peers,
880 .procname = "buffers",
882 .proc_handler = &proc_lnet_buffers,
887 .proc_handler = &proc_lnet_nis,
890 .procname = "portal_rotor",
892 .proc_handler = &proc_lnet_portal_rotor,
898 static ctl_table_t top_table[] = {
913 if (lnet_table_header == NULL)
914 lnet_table_header = register_sysctl_table(top_table);
920 if (lnet_table_header != NULL)
921 unregister_sysctl_table(lnet_table_header);
923 lnet_table_header = NULL;