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d7e09d03 PT |
1 | /* |
2 | * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. | |
3 | * | |
4 | * Copyright (c) 2011, 2012, Intel Corporation. | |
5 | * | |
6 | * This file is part of Portals | |
7 | * http://sourceforge.net/projects/sandiaportals/ | |
8 | * | |
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. | |
12 | * | |
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. | |
17 | * | |
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. | |
21 | * | |
22 | */ | |
23 | ||
24 | #define DEBUG_SUBSYSTEM S_LNET | |
9fdaf8c0 GKH |
25 | #include "../../include/linux/libcfs/libcfs.h" |
26 | #include "../../include/linux/lnet/lib-lnet.h" | |
d7e09d03 | 27 | |
d7e09d03 PT |
28 | /* This is really lnet_proc.c. You might need to update sanity test 215 |
29 | * if any file format is changed. */ | |
30 | ||
d7e09d03 PT |
31 | #define LNET_LOFFT_BITS (sizeof(loff_t) * 8) |
32 | /* | |
33 | * NB: max allowed LNET_CPT_BITS is 8 on 64-bit system and 2 on 32-bit system | |
34 | */ | |
35 | #define LNET_PROC_CPT_BITS (LNET_CPT_BITS + 1) | |
36 | /* change version, 16 bits or 8 bits */ | |
387915de | 37 | #define LNET_PROC_VER_BITS max_t(size_t, min_t(size_t, LNET_LOFFT_BITS, 64) / 4, 8) |
d7e09d03 PT |
38 | |
39 | #define LNET_PROC_HASH_BITS LNET_PEER_HASH_BITS | |
40 | /* | |
41 | * bits for peer hash offset | |
42 | * NB: we don't use the highest bit of *ppos because it's signed | |
43 | */ | |
44 | #define LNET_PROC_HOFF_BITS (LNET_LOFFT_BITS - \ | |
45 | LNET_PROC_CPT_BITS - \ | |
46 | LNET_PROC_VER_BITS - \ | |
47 | LNET_PROC_HASH_BITS - 1) | |
48 | /* bits for hash index + position */ | |
49 | #define LNET_PROC_HPOS_BITS (LNET_PROC_HASH_BITS + LNET_PROC_HOFF_BITS) | |
50 | /* bits for peer hash table + hash version */ | |
51 | #define LNET_PROC_VPOS_BITS (LNET_PROC_HPOS_BITS + LNET_PROC_VER_BITS) | |
52 | ||
53 | #define LNET_PROC_CPT_MASK ((1ULL << LNET_PROC_CPT_BITS) - 1) | |
54 | #define LNET_PROC_VER_MASK ((1ULL << LNET_PROC_VER_BITS) - 1) | |
55 | #define LNET_PROC_HASH_MASK ((1ULL << LNET_PROC_HASH_BITS) - 1) | |
56 | #define LNET_PROC_HOFF_MASK ((1ULL << LNET_PROC_HOFF_BITS) - 1) | |
57 | ||
58 | #define LNET_PROC_CPT_GET(pos) \ | |
59 | (int)(((pos) >> LNET_PROC_VPOS_BITS) & LNET_PROC_CPT_MASK) | |
60 | ||
61 | #define LNET_PROC_VER_GET(pos) \ | |
62 | (int)(((pos) >> LNET_PROC_HPOS_BITS) & LNET_PROC_VER_MASK) | |
63 | ||
64 | #define LNET_PROC_HASH_GET(pos) \ | |
65 | (int)(((pos) >> LNET_PROC_HOFF_BITS) & LNET_PROC_HASH_MASK) | |
66 | ||
67 | #define LNET_PROC_HOFF_GET(pos) \ | |
68 | (int)((pos) & LNET_PROC_HOFF_MASK) | |
69 | ||
70 | #define LNET_PROC_POS_MAKE(cpt, ver, hash, off) \ | |
71 | (((((loff_t)(cpt)) & LNET_PROC_CPT_MASK) << LNET_PROC_VPOS_BITS) | \ | |
72 | ((((loff_t)(ver)) & LNET_PROC_VER_MASK) << LNET_PROC_HPOS_BITS) | \ | |
73 | ((((loff_t)(hash)) & LNET_PROC_HASH_MASK) << LNET_PROC_HOFF_BITS) | \ | |
74 | ((off) & LNET_PROC_HOFF_MASK)) | |
75 | ||
76 | #define LNET_PROC_VERSION(v) ((unsigned int)((v) & LNET_PROC_VER_MASK)) | |
77 | ||
5a08f067 LC |
78 | static int proc_call_handler(void *data, int write, loff_t *ppos, |
79 | void __user *buffer, size_t *lenp, | |
80 | int (*handler)(void *data, int write, | |
81 | loff_t pos, void __user *buffer, int len)) | |
9b335e2b GKH |
82 | { |
83 | int rc = handler(data, write, *ppos, buffer, *lenp); | |
84 | ||
85 | if (rc < 0) | |
86 | return rc; | |
87 | ||
88 | if (write) { | |
89 | *ppos += *lenp; | |
90 | } else { | |
91 | *lenp = rc; | |
92 | *ppos += rc; | |
93 | } | |
94 | return 0; | |
95 | } | |
96 | ||
d7e09d03 | 97 | static int __proc_lnet_stats(void *data, int write, |
5a08f067 | 98 | loff_t pos, void __user *buffer, int nob) |
d7e09d03 | 99 | { |
7e7ab095 | 100 | int rc; |
d7e09d03 | 101 | lnet_counters_t *ctrs; |
7e7ab095 MS |
102 | int len; |
103 | char *tmpstr; | |
104 | const int tmpsiz = 256; /* 7 %u and 4 %llu */ | |
d7e09d03 PT |
105 | |
106 | if (write) { | |
107 | lnet_counters_reset(); | |
108 | return 0; | |
109 | } | |
110 | ||
111 | /* read */ | |
112 | ||
113 | LIBCFS_ALLOC(ctrs, sizeof(*ctrs)); | |
114 | if (ctrs == NULL) | |
115 | return -ENOMEM; | |
116 | ||
117 | LIBCFS_ALLOC(tmpstr, tmpsiz); | |
118 | if (tmpstr == NULL) { | |
119 | LIBCFS_FREE(ctrs, sizeof(*ctrs)); | |
120 | return -ENOMEM; | |
121 | } | |
122 | ||
123 | lnet_counters_get(ctrs); | |
124 | ||
125 | len = snprintf(tmpstr, tmpsiz, | |
b0f5aad5 | 126 | "%u %u %u %u %u %u %u %llu %llu %llu %llu", |
d7e09d03 PT |
127 | ctrs->msgs_alloc, ctrs->msgs_max, |
128 | ctrs->errors, | |
129 | ctrs->send_count, ctrs->recv_count, | |
130 | ctrs->route_count, ctrs->drop_count, | |
131 | ctrs->send_length, ctrs->recv_length, | |
132 | ctrs->route_length, ctrs->drop_length); | |
133 | ||
134 | if (pos >= min_t(int, len, strlen(tmpstr))) | |
135 | rc = 0; | |
136 | else | |
137 | rc = cfs_trace_copyout_string(buffer, nob, | |
138 | tmpstr + pos, "\n"); | |
139 | ||
140 | LIBCFS_FREE(tmpstr, tmpsiz); | |
141 | LIBCFS_FREE(ctrs, sizeof(*ctrs)); | |
142 | return rc; | |
143 | } | |
144 | ||
9b335e2b GKH |
145 | static int proc_lnet_stats(struct ctl_table *table, int write, |
146 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
147 | { | |
148 | return proc_call_handler(table->data, write, ppos, buffer, lenp, | |
149 | __proc_lnet_stats); | |
150 | } | |
d7e09d03 | 151 | |
09512525 VT |
152 | static int proc_lnet_routes(struct ctl_table *table, int write, |
153 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
d7e09d03 | 154 | { |
7e7ab095 MS |
155 | const int tmpsiz = 256; |
156 | char *tmpstr; | |
157 | char *s; | |
158 | int rc = 0; | |
159 | int len; | |
160 | int ver; | |
161 | int off; | |
d7e09d03 | 162 | |
d7e09d03 PT |
163 | CLASSERT(sizeof(loff_t) >= 4); |
164 | ||
165 | off = LNET_PROC_HOFF_GET(*ppos); | |
166 | ver = LNET_PROC_VER_GET(*ppos); | |
167 | ||
5f45aa16 | 168 | LASSERT(!write); |
d7e09d03 PT |
169 | |
170 | if (*lenp == 0) | |
171 | return 0; | |
172 | ||
173 | LIBCFS_ALLOC(tmpstr, tmpsiz); | |
174 | if (tmpstr == NULL) | |
175 | return -ENOMEM; | |
176 | ||
177 | s = tmpstr; /* points to current position in tmpstr[] */ | |
178 | ||
179 | if (*ppos == 0) { | |
180 | s += snprintf(s, tmpstr + tmpsiz - s, "Routing %s\n", | |
181 | the_lnet.ln_routing ? "enabled" : "disabled"); | |
5f45aa16 | 182 | LASSERT(tmpstr + tmpsiz - s > 0); |
d7e09d03 | 183 | |
e75fb87f DO |
184 | s += snprintf(s, tmpstr + tmpsiz - s, "%-8s %4s %8s %7s %s\n", |
185 | "net", "hops", "priority", "state", "router"); | |
5f45aa16 | 186 | LASSERT(tmpstr + tmpsiz - s > 0); |
d7e09d03 PT |
187 | |
188 | lnet_net_lock(0); | |
189 | ver = (unsigned int)the_lnet.ln_remote_nets_version; | |
190 | lnet_net_unlock(0); | |
191 | *ppos = LNET_PROC_POS_MAKE(0, ver, 0, off); | |
192 | } else { | |
7e7ab095 MS |
193 | struct list_head *n; |
194 | struct list_head *r; | |
195 | lnet_route_t *route = NULL; | |
196 | lnet_remotenet_t *rnet = NULL; | |
197 | int skip = off - 1; | |
198 | struct list_head *rn_list; | |
199 | int i; | |
d7e09d03 PT |
200 | |
201 | lnet_net_lock(0); | |
202 | ||
203 | if (ver != LNET_PROC_VERSION(the_lnet.ln_remote_nets_version)) { | |
204 | lnet_net_unlock(0); | |
205 | LIBCFS_FREE(tmpstr, tmpsiz); | |
206 | return -ESTALE; | |
207 | } | |
208 | ||
209 | for (i = 0; i < LNET_REMOTE_NETS_HASH_SIZE && route == NULL; | |
210 | i++) { | |
211 | rn_list = &the_lnet.ln_remote_nets_hash[i]; | |
212 | ||
213 | n = rn_list->next; | |
214 | ||
215 | while (n != rn_list && route == NULL) { | |
216 | rnet = list_entry(n, lnet_remotenet_t, | |
217 | lrn_list); | |
218 | ||
219 | r = rnet->lrn_routes.next; | |
220 | ||
221 | while (r != &rnet->lrn_routes) { | |
222 | lnet_route_t *re = | |
223 | list_entry(r, lnet_route_t, | |
224 | lr_list); | |
225 | if (skip == 0) { | |
226 | route = re; | |
227 | break; | |
228 | } | |
229 | ||
230 | skip--; | |
231 | r = r->next; | |
232 | } | |
233 | ||
234 | n = n->next; | |
235 | } | |
236 | } | |
237 | ||
238 | if (route != NULL) { | |
7e7ab095 MS |
239 | __u32 net = rnet->lrn_net; |
240 | unsigned int hops = route->lr_hops; | |
241 | unsigned int priority = route->lr_priority; | |
242 | lnet_nid_t nid = route->lr_gateway->lp_nid; | |
243 | int alive = route->lr_gateway->lp_alive; | |
d7e09d03 PT |
244 | |
245 | s += snprintf(s, tmpstr + tmpsiz - s, | |
e75fb87f | 246 | "%-8s %4u %8u %7s %s\n", |
d7e09d03 | 247 | libcfs_net2str(net), hops, |
e75fb87f | 248 | priority, |
d7e09d03 PT |
249 | alive ? "up" : "down", |
250 | libcfs_nid2str(nid)); | |
251 | LASSERT(tmpstr + tmpsiz - s > 0); | |
252 | } | |
253 | ||
254 | lnet_net_unlock(0); | |
255 | } | |
256 | ||
257 | len = s - tmpstr; /* how many bytes was written */ | |
258 | ||
259 | if (len > *lenp) { /* linux-supplied buffer is too small */ | |
260 | rc = -EINVAL; | |
261 | } else if (len > 0) { /* wrote something */ | |
262 | if (copy_to_user(buffer, tmpstr, len)) | |
263 | rc = -EFAULT; | |
264 | else { | |
265 | off += 1; | |
266 | *ppos = LNET_PROC_POS_MAKE(0, ver, 0, off); | |
267 | } | |
268 | } | |
269 | ||
270 | LIBCFS_FREE(tmpstr, tmpsiz); | |
271 | ||
272 | if (rc == 0) | |
273 | *lenp = len; | |
274 | ||
275 | return rc; | |
276 | } | |
277 | ||
09512525 VT |
278 | static int proc_lnet_routers(struct ctl_table *table, int write, |
279 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
d7e09d03 | 280 | { |
7e7ab095 MS |
281 | int rc = 0; |
282 | char *tmpstr; | |
283 | char *s; | |
284 | const int tmpsiz = 256; | |
285 | int len; | |
286 | int ver; | |
287 | int off; | |
d7e09d03 | 288 | |
d7e09d03 PT |
289 | off = LNET_PROC_HOFF_GET(*ppos); |
290 | ver = LNET_PROC_VER_GET(*ppos); | |
291 | ||
5f45aa16 | 292 | LASSERT(!write); |
d7e09d03 PT |
293 | |
294 | if (*lenp == 0) | |
295 | return 0; | |
296 | ||
297 | LIBCFS_ALLOC(tmpstr, tmpsiz); | |
298 | if (tmpstr == NULL) | |
299 | return -ENOMEM; | |
300 | ||
301 | s = tmpstr; /* points to current position in tmpstr[] */ | |
302 | ||
303 | if (*ppos == 0) { | |
304 | s += snprintf(s, tmpstr + tmpsiz - s, | |
305 | "%-4s %7s %9s %6s %12s %9s %8s %7s %s\n", | |
306 | "ref", "rtr_ref", "alive_cnt", "state", | |
307 | "last_ping", "ping_sent", "deadline", | |
308 | "down_ni", "router"); | |
309 | LASSERT(tmpstr + tmpsiz - s > 0); | |
310 | ||
311 | lnet_net_lock(0); | |
312 | ver = (unsigned int)the_lnet.ln_routers_version; | |
313 | lnet_net_unlock(0); | |
314 | *ppos = LNET_PROC_POS_MAKE(0, ver, 0, off); | |
315 | } else { | |
7e7ab095 MS |
316 | struct list_head *r; |
317 | struct lnet_peer *peer = NULL; | |
318 | int skip = off - 1; | |
d7e09d03 PT |
319 | |
320 | lnet_net_lock(0); | |
321 | ||
322 | if (ver != LNET_PROC_VERSION(the_lnet.ln_routers_version)) { | |
323 | lnet_net_unlock(0); | |
324 | ||
325 | LIBCFS_FREE(tmpstr, tmpsiz); | |
326 | return -ESTALE; | |
327 | } | |
328 | ||
329 | r = the_lnet.ln_routers.next; | |
330 | ||
331 | while (r != &the_lnet.ln_routers) { | |
332 | lnet_peer_t *lp = list_entry(r, lnet_peer_t, | |
333 | lp_rtr_list); | |
334 | ||
335 | if (skip == 0) { | |
336 | peer = lp; | |
337 | break; | |
338 | } | |
339 | ||
340 | skip--; | |
341 | r = r->next; | |
342 | } | |
343 | ||
344 | if (peer != NULL) { | |
345 | lnet_nid_t nid = peer->lp_nid; | |
a649ad1d GKH |
346 | unsigned long now = cfs_time_current(); |
347 | unsigned long deadline = peer->lp_ping_deadline; | |
7e7ab095 MS |
348 | int nrefs = peer->lp_refcount; |
349 | int nrtrrefs = peer->lp_rtr_refcount; | |
d7e09d03 | 350 | int alive_cnt = peer->lp_alive_count; |
7e7ab095 MS |
351 | int alive = peer->lp_alive; |
352 | int pingsent = !peer->lp_ping_notsent; | |
d7e09d03 PT |
353 | int last_ping = cfs_duration_sec(cfs_time_sub(now, |
354 | peer->lp_ping_timestamp)); | |
7e7ab095 | 355 | int down_ni = 0; |
d7e09d03 PT |
356 | lnet_route_t *rtr; |
357 | ||
358 | if ((peer->lp_ping_feats & | |
359 | LNET_PING_FEAT_NI_STATUS) != 0) { | |
360 | list_for_each_entry(rtr, &peer->lp_routes, | |
361 | lr_gwlist) { | |
362 | /* downis on any route should be the | |
363 | * number of downis on the gateway */ | |
364 | if (rtr->lr_downis != 0) { | |
365 | down_ni = rtr->lr_downis; | |
366 | break; | |
367 | } | |
368 | } | |
369 | } | |
370 | ||
371 | if (deadline == 0) | |
372 | s += snprintf(s, tmpstr + tmpsiz - s, | |
373 | "%-4d %7d %9d %6s %12d %9d %8s %7d %s\n", | |
374 | nrefs, nrtrrefs, alive_cnt, | |
375 | alive ? "up" : "down", last_ping, | |
376 | pingsent, "NA", down_ni, | |
377 | libcfs_nid2str(nid)); | |
378 | else | |
379 | s += snprintf(s, tmpstr + tmpsiz - s, | |
380 | "%-4d %7d %9d %6s %12d %9d %8lu %7d %s\n", | |
381 | nrefs, nrtrrefs, alive_cnt, | |
382 | alive ? "up" : "down", last_ping, | |
383 | pingsent, | |
384 | cfs_duration_sec(cfs_time_sub(deadline, now)), | |
385 | down_ni, libcfs_nid2str(nid)); | |
5f45aa16 | 386 | LASSERT(tmpstr + tmpsiz - s > 0); |
d7e09d03 PT |
387 | } |
388 | ||
389 | lnet_net_unlock(0); | |
390 | } | |
391 | ||
392 | len = s - tmpstr; /* how many bytes was written */ | |
393 | ||
394 | if (len > *lenp) { /* linux-supplied buffer is too small */ | |
395 | rc = -EINVAL; | |
396 | } else if (len > 0) { /* wrote something */ | |
397 | if (copy_to_user(buffer, tmpstr, len)) | |
398 | rc = -EFAULT; | |
399 | else { | |
400 | off += 1; | |
401 | *ppos = LNET_PROC_POS_MAKE(0, ver, 0, off); | |
402 | } | |
403 | } | |
404 | ||
405 | LIBCFS_FREE(tmpstr, tmpsiz); | |
406 | ||
407 | if (rc == 0) | |
408 | *lenp = len; | |
409 | ||
410 | return rc; | |
411 | } | |
412 | ||
09512525 VT |
413 | static int proc_lnet_peers(struct ctl_table *table, int write, |
414 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
d7e09d03 | 415 | { |
7e7ab095 MS |
416 | const int tmpsiz = 256; |
417 | struct lnet_peer_table *ptable; | |
418 | char *tmpstr; | |
419 | char *s; | |
420 | int cpt = LNET_PROC_CPT_GET(*ppos); | |
421 | int ver = LNET_PROC_VER_GET(*ppos); | |
422 | int hash = LNET_PROC_HASH_GET(*ppos); | |
423 | int hoff = LNET_PROC_HOFF_GET(*ppos); | |
424 | int rc = 0; | |
425 | int len; | |
d7e09d03 PT |
426 | |
427 | CLASSERT(LNET_PROC_HASH_BITS >= LNET_PEER_HASH_BITS); | |
428 | LASSERT(!write); | |
429 | ||
430 | if (*lenp == 0) | |
431 | return 0; | |
432 | ||
433 | if (cpt >= LNET_CPT_NUMBER) { | |
434 | *lenp = 0; | |
435 | return 0; | |
436 | } | |
437 | ||
438 | LIBCFS_ALLOC(tmpstr, tmpsiz); | |
439 | if (tmpstr == NULL) | |
440 | return -ENOMEM; | |
441 | ||
442 | s = tmpstr; /* points to current position in tmpstr[] */ | |
443 | ||
444 | if (*ppos == 0) { | |
445 | s += snprintf(s, tmpstr + tmpsiz - s, | |
446 | "%-24s %4s %5s %5s %5s %5s %5s %5s %5s %s\n", | |
447 | "nid", "refs", "state", "last", "max", | |
448 | "rtr", "min", "tx", "min", "queue"); | |
5f45aa16 | 449 | LASSERT(tmpstr + tmpsiz - s > 0); |
d7e09d03 PT |
450 | |
451 | hoff++; | |
452 | } else { | |
7e7ab095 MS |
453 | struct lnet_peer *peer; |
454 | struct list_head *p; | |
455 | int skip; | |
d7e09d03 PT |
456 | again: |
457 | p = NULL; | |
458 | peer = NULL; | |
459 | skip = hoff - 1; | |
460 | ||
461 | lnet_net_lock(cpt); | |
462 | ptable = the_lnet.ln_peer_tables[cpt]; | |
463 | if (hoff == 1) | |
464 | ver = LNET_PROC_VERSION(ptable->pt_version); | |
465 | ||
466 | if (ver != LNET_PROC_VERSION(ptable->pt_version)) { | |
467 | lnet_net_unlock(cpt); | |
468 | LIBCFS_FREE(tmpstr, tmpsiz); | |
469 | return -ESTALE; | |
470 | } | |
471 | ||
472 | while (hash < LNET_PEER_HASH_SIZE) { | |
473 | if (p == NULL) | |
474 | p = ptable->pt_hash[hash].next; | |
475 | ||
476 | while (p != &ptable->pt_hash[hash]) { | |
477 | lnet_peer_t *lp = list_entry(p, lnet_peer_t, | |
478 | lp_hashlist); | |
479 | if (skip == 0) { | |
480 | peer = lp; | |
481 | ||
482 | /* minor optimization: start from idx+1 | |
483 | * on next iteration if we've just | |
484 | * drained lp_hashlist */ | |
485 | if (lp->lp_hashlist.next == | |
486 | &ptable->pt_hash[hash]) { | |
487 | hoff = 1; | |
488 | hash++; | |
489 | } else { | |
490 | hoff++; | |
491 | } | |
492 | ||
493 | break; | |
494 | } | |
495 | ||
496 | skip--; | |
497 | p = lp->lp_hashlist.next; | |
498 | } | |
499 | ||
500 | if (peer != NULL) | |
501 | break; | |
502 | ||
503 | p = NULL; | |
504 | hoff = 1; | |
505 | hash++; | |
506 | } | |
507 | ||
508 | if (peer != NULL) { | |
7e7ab095 MS |
509 | lnet_nid_t nid = peer->lp_nid; |
510 | int nrefs = peer->lp_refcount; | |
511 | int lastalive = -1; | |
512 | char *aliveness = "NA"; | |
513 | int maxcr = peer->lp_ni->ni_peertxcredits; | |
514 | int txcr = peer->lp_txcredits; | |
515 | int mintxcr = peer->lp_mintxcredits; | |
516 | int rtrcr = peer->lp_rtrcredits; | |
517 | int minrtrcr = peer->lp_minrtrcredits; | |
518 | int txqnob = peer->lp_txqnob; | |
d7e09d03 PT |
519 | |
520 | if (lnet_isrouter(peer) || | |
521 | lnet_peer_aliveness_enabled(peer)) | |
522 | aliveness = peer->lp_alive ? "up" : "down"; | |
523 | ||
524 | if (lnet_peer_aliveness_enabled(peer)) { | |
7e7ab095 | 525 | unsigned long now = cfs_time_current(); |
b2d201bd | 526 | long delta; |
d7e09d03 PT |
527 | |
528 | delta = cfs_time_sub(now, peer->lp_last_alive); | |
529 | lastalive = cfs_duration_sec(delta); | |
530 | ||
531 | /* No need to mess up peers contents with | |
532 | * arbitrarily long integers - it suffices to | |
533 | * know that lastalive is more than 10000s old | |
534 | */ | |
535 | if (lastalive >= 10000) | |
536 | lastalive = 9999; | |
537 | } | |
538 | ||
539 | lnet_net_unlock(cpt); | |
540 | ||
541 | s += snprintf(s, tmpstr + tmpsiz - s, | |
542 | "%-24s %4d %5s %5d %5d %5d %5d %5d %5d %d\n", | |
543 | libcfs_nid2str(nid), nrefs, aliveness, | |
544 | lastalive, maxcr, rtrcr, minrtrcr, txcr, | |
545 | mintxcr, txqnob); | |
5f45aa16 | 546 | LASSERT(tmpstr + tmpsiz - s > 0); |
d7e09d03 PT |
547 | |
548 | } else { /* peer is NULL */ | |
549 | lnet_net_unlock(cpt); | |
550 | } | |
551 | ||
552 | if (hash == LNET_PEER_HASH_SIZE) { | |
553 | cpt++; | |
554 | hash = 0; | |
555 | hoff = 1; | |
556 | if (peer == NULL && cpt < LNET_CPT_NUMBER) | |
557 | goto again; | |
558 | } | |
559 | } | |
560 | ||
561 | len = s - tmpstr; /* how many bytes was written */ | |
562 | ||
563 | if (len > *lenp) { /* linux-supplied buffer is too small */ | |
564 | rc = -EINVAL; | |
565 | } else if (len > 0) { /* wrote something */ | |
566 | if (copy_to_user(buffer, tmpstr, len)) | |
567 | rc = -EFAULT; | |
568 | else | |
569 | *ppos = LNET_PROC_POS_MAKE(cpt, ver, hash, hoff); | |
570 | } | |
571 | ||
572 | LIBCFS_FREE(tmpstr, tmpsiz); | |
573 | ||
574 | if (rc == 0) | |
575 | *lenp = len; | |
576 | ||
577 | return rc; | |
578 | } | |
579 | ||
580 | static int __proc_lnet_buffers(void *data, int write, | |
5a08f067 | 581 | loff_t pos, void __user *buffer, int nob) |
d7e09d03 | 582 | { |
7e7ab095 MS |
583 | char *s; |
584 | char *tmpstr; | |
585 | int tmpsiz; | |
586 | int idx; | |
587 | int len; | |
588 | int rc; | |
589 | int i; | |
d7e09d03 PT |
590 | |
591 | LASSERT(!write); | |
592 | ||
593 | /* (4 %d) * 4 * LNET_CPT_NUMBER */ | |
594 | tmpsiz = 64 * (LNET_NRBPOOLS + 1) * LNET_CPT_NUMBER; | |
595 | LIBCFS_ALLOC(tmpstr, tmpsiz); | |
596 | if (tmpstr == NULL) | |
597 | return -ENOMEM; | |
598 | ||
599 | s = tmpstr; /* points to current position in tmpstr[] */ | |
600 | ||
601 | s += snprintf(s, tmpstr + tmpsiz - s, | |
602 | "%5s %5s %7s %7s\n", | |
603 | "pages", "count", "credits", "min"); | |
5f45aa16 | 604 | LASSERT(tmpstr + tmpsiz - s > 0); |
d7e09d03 PT |
605 | |
606 | if (the_lnet.ln_rtrpools == NULL) | |
607 | goto out; /* I'm not a router */ | |
608 | ||
609 | for (idx = 0; idx < LNET_NRBPOOLS; idx++) { | |
610 | lnet_rtrbufpool_t *rbp; | |
611 | ||
612 | lnet_net_lock(LNET_LOCK_EX); | |
613 | cfs_percpt_for_each(rbp, i, the_lnet.ln_rtrpools) { | |
614 | s += snprintf(s, tmpstr + tmpsiz - s, | |
615 | "%5d %5d %7d %7d\n", | |
616 | rbp[idx].rbp_npages, | |
617 | rbp[idx].rbp_nbuffers, | |
618 | rbp[idx].rbp_credits, | |
619 | rbp[idx].rbp_mincredits); | |
620 | LASSERT(tmpstr + tmpsiz - s > 0); | |
621 | } | |
622 | lnet_net_unlock(LNET_LOCK_EX); | |
623 | } | |
624 | ||
625 | out: | |
626 | len = s - tmpstr; | |
627 | ||
628 | if (pos >= min_t(int, len, strlen(tmpstr))) | |
629 | rc = 0; | |
630 | else | |
631 | rc = cfs_trace_copyout_string(buffer, nob, | |
632 | tmpstr + pos, NULL); | |
633 | ||
634 | LIBCFS_FREE(tmpstr, tmpsiz); | |
635 | return rc; | |
636 | } | |
637 | ||
9b335e2b GKH |
638 | static int proc_lnet_buffers(struct ctl_table *table, int write, |
639 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
640 | { | |
641 | return proc_call_handler(table->data, write, ppos, buffer, lenp, | |
642 | __proc_lnet_buffers); | |
643 | } | |
d7e09d03 | 644 | |
09512525 VT |
645 | static int proc_lnet_nis(struct ctl_table *table, int write, |
646 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
d7e09d03 | 647 | { |
7e7ab095 MS |
648 | int tmpsiz = 128 * LNET_CPT_NUMBER; |
649 | int rc = 0; | |
650 | char *tmpstr; | |
651 | char *s; | |
652 | int len; | |
d7e09d03 | 653 | |
5f45aa16 | 654 | LASSERT(!write); |
d7e09d03 PT |
655 | |
656 | if (*lenp == 0) | |
657 | return 0; | |
658 | ||
659 | LIBCFS_ALLOC(tmpstr, tmpsiz); | |
660 | if (tmpstr == NULL) | |
661 | return -ENOMEM; | |
662 | ||
663 | s = tmpstr; /* points to current position in tmpstr[] */ | |
664 | ||
665 | if (*ppos == 0) { | |
666 | s += snprintf(s, tmpstr + tmpsiz - s, | |
667 | "%-24s %6s %5s %4s %4s %4s %5s %5s %5s\n", | |
668 | "nid", "status", "alive", "refs", "peer", | |
669 | "rtr", "max", "tx", "min"); | |
5f45aa16 | 670 | LASSERT(tmpstr + tmpsiz - s > 0); |
d7e09d03 | 671 | } else { |
7e7ab095 MS |
672 | struct list_head *n; |
673 | lnet_ni_t *ni = NULL; | |
674 | int skip = *ppos - 1; | |
d7e09d03 PT |
675 | |
676 | lnet_net_lock(0); | |
677 | ||
678 | n = the_lnet.ln_nis.next; | |
679 | ||
680 | while (n != &the_lnet.ln_nis) { | |
681 | lnet_ni_t *a_ni = list_entry(n, lnet_ni_t, ni_list); | |
682 | ||
683 | if (skip == 0) { | |
684 | ni = a_ni; | |
685 | break; | |
686 | } | |
687 | ||
688 | skip--; | |
689 | n = n->next; | |
690 | } | |
691 | ||
692 | if (ni != NULL) { | |
7e7ab095 MS |
693 | struct lnet_tx_queue *tq; |
694 | char *stat; | |
695 | long now = get_seconds(); | |
696 | int last_alive = -1; | |
697 | int i; | |
698 | int j; | |
d7e09d03 PT |
699 | |
700 | if (the_lnet.ln_routing) | |
701 | last_alive = now - ni->ni_last_alive; | |
702 | ||
703 | /* @lo forever alive */ | |
704 | if (ni->ni_lnd->lnd_type == LOLND) | |
705 | last_alive = 0; | |
706 | ||
707 | lnet_ni_lock(ni); | |
708 | LASSERT(ni->ni_status != NULL); | |
709 | stat = (ni->ni_status->ns_status == | |
710 | LNET_NI_STATUS_UP) ? "up" : "down"; | |
711 | lnet_ni_unlock(ni); | |
712 | ||
713 | /* we actually output credits information for | |
714 | * TX queue of each partition */ | |
715 | cfs_percpt_for_each(tq, i, ni->ni_tx_queues) { | |
716 | for (j = 0; ni->ni_cpts != NULL && | |
717 | j < ni->ni_ncpts; j++) { | |
718 | if (i == ni->ni_cpts[j]) | |
719 | break; | |
720 | } | |
721 | ||
722 | if (j == ni->ni_ncpts) | |
723 | continue; | |
724 | ||
725 | if (i != 0) | |
726 | lnet_net_lock(i); | |
727 | ||
728 | s += snprintf(s, tmpstr + tmpsiz - s, | |
729 | "%-24s %6s %5d %4d %4d %4d %5d %5d %5d\n", | |
730 | libcfs_nid2str(ni->ni_nid), stat, | |
731 | last_alive, *ni->ni_refs[i], | |
732 | ni->ni_peertxcredits, | |
733 | ni->ni_peerrtrcredits, | |
734 | tq->tq_credits_max, | |
735 | tq->tq_credits, tq->tq_credits_min); | |
736 | if (i != 0) | |
737 | lnet_net_unlock(i); | |
738 | } | |
739 | LASSERT(tmpstr + tmpsiz - s > 0); | |
740 | } | |
741 | ||
742 | lnet_net_unlock(0); | |
743 | } | |
744 | ||
745 | len = s - tmpstr; /* how many bytes was written */ | |
746 | ||
747 | if (len > *lenp) { /* linux-supplied buffer is too small */ | |
748 | rc = -EINVAL; | |
749 | } else if (len > 0) { /* wrote something */ | |
750 | if (copy_to_user(buffer, tmpstr, len)) | |
751 | rc = -EFAULT; | |
752 | else | |
753 | *ppos += 1; | |
754 | } | |
755 | ||
756 | LIBCFS_FREE(tmpstr, tmpsiz); | |
757 | ||
758 | if (rc == 0) | |
759 | *lenp = len; | |
760 | ||
761 | return rc; | |
762 | } | |
763 | ||
764 | struct lnet_portal_rotors { | |
7e7ab095 MS |
765 | int pr_value; |
766 | const char *pr_name; | |
767 | const char *pr_desc; | |
d7e09d03 PT |
768 | }; |
769 | ||
770 | static struct lnet_portal_rotors portal_rotors[] = { | |
771 | { | |
772 | .pr_value = LNET_PTL_ROTOR_OFF, | |
773 | .pr_name = "OFF", | |
774 | .pr_desc = "Turn off message rotor for wildcard portals" | |
775 | }, | |
776 | { | |
777 | .pr_value = LNET_PTL_ROTOR_ON, | |
778 | .pr_name = "ON", | |
2d00bd17 | 779 | .pr_desc = "round-robin dispatch all PUT messages for wildcard portals" |
d7e09d03 PT |
780 | }, |
781 | { | |
782 | .pr_value = LNET_PTL_ROTOR_RR_RT, | |
783 | .pr_name = "RR_RT", | |
2d00bd17 | 784 | .pr_desc = "round-robin dispatch routed PUT message for wildcard portals" |
d7e09d03 PT |
785 | }, |
786 | { | |
787 | .pr_value = LNET_PTL_ROTOR_HASH_RT, | |
788 | .pr_name = "HASH_RT", | |
2d00bd17 | 789 | .pr_desc = "dispatch routed PUT message by hashing source NID for wildcard portals" |
d7e09d03 PT |
790 | }, |
791 | { | |
792 | .pr_value = -1, | |
793 | .pr_name = NULL, | |
794 | .pr_desc = NULL | |
795 | }, | |
796 | }; | |
797 | ||
798 | extern int portal_rotor; | |
799 | ||
800 | static int __proc_lnet_portal_rotor(void *data, int write, | |
5a08f067 | 801 | loff_t pos, void __user *buffer, int nob) |
d7e09d03 | 802 | { |
7e7ab095 MS |
803 | const int buf_len = 128; |
804 | char *buf; | |
805 | char *tmp; | |
806 | int rc; | |
807 | int i; | |
d7e09d03 PT |
808 | |
809 | LIBCFS_ALLOC(buf, buf_len); | |
810 | if (buf == NULL) | |
811 | return -ENOMEM; | |
812 | ||
813 | if (!write) { | |
814 | lnet_res_lock(0); | |
815 | ||
816 | for (i = 0; portal_rotors[i].pr_value >= 0; i++) { | |
817 | if (portal_rotors[i].pr_value == portal_rotor) | |
818 | break; | |
819 | } | |
820 | ||
821 | LASSERT(portal_rotors[i].pr_value == portal_rotor); | |
822 | lnet_res_unlock(0); | |
823 | ||
824 | rc = snprintf(buf, buf_len, | |
825 | "{\n\tportals: all\n" | |
826 | "\trotor: %s\n\tdescription: %s\n}", | |
827 | portal_rotors[i].pr_name, | |
828 | portal_rotors[i].pr_desc); | |
829 | ||
830 | if (pos >= min_t(int, rc, buf_len)) { | |
831 | rc = 0; | |
832 | } else { | |
833 | rc = cfs_trace_copyout_string(buffer, nob, | |
834 | buf + pos, "\n"); | |
835 | } | |
836 | goto out; | |
837 | } | |
838 | ||
839 | rc = cfs_trace_copyin_string(buf, buf_len, buffer, nob); | |
840 | if (rc < 0) | |
841 | goto out; | |
842 | ||
843 | tmp = cfs_trimwhite(buf); | |
844 | ||
845 | rc = -EINVAL; | |
846 | lnet_res_lock(0); | |
847 | for (i = 0; portal_rotors[i].pr_name != NULL; i++) { | |
7a724582 PT |
848 | if (strncasecmp(portal_rotors[i].pr_name, tmp, |
849 | strlen(portal_rotors[i].pr_name)) == 0) { | |
d7e09d03 PT |
850 | portal_rotor = portal_rotors[i].pr_value; |
851 | rc = 0; | |
852 | break; | |
853 | } | |
854 | } | |
855 | lnet_res_unlock(0); | |
856 | out: | |
857 | LIBCFS_FREE(buf, buf_len); | |
858 | return rc; | |
859 | } | |
9b335e2b GKH |
860 | |
861 | static int proc_lnet_portal_rotor(struct ctl_table *table, int write, | |
862 | void __user *buffer, size_t *lenp, | |
863 | loff_t *ppos) | |
864 | { | |
865 | return proc_call_handler(table->data, write, ppos, buffer, lenp, | |
866 | __proc_lnet_portal_rotor); | |
867 | } | |
d7e09d03 | 868 | |
691bc0eb | 869 | static struct ctl_table lnet_table[] = { |
d7e09d03 PT |
870 | /* |
871 | * NB No .strategy entries have been provided since sysctl(8) prefers | |
872 | * to go via /proc for portability. | |
873 | */ | |
874 | { | |
7e7ab095 MS |
875 | .procname = "stats", |
876 | .mode = 0644, | |
d7e09d03 PT |
877 | .proc_handler = &proc_lnet_stats, |
878 | }, | |
879 | { | |
7e7ab095 MS |
880 | .procname = "routes", |
881 | .mode = 0444, | |
d7e09d03 PT |
882 | .proc_handler = &proc_lnet_routes, |
883 | }, | |
884 | { | |
7e7ab095 MS |
885 | .procname = "routers", |
886 | .mode = 0444, | |
d7e09d03 PT |
887 | .proc_handler = &proc_lnet_routers, |
888 | }, | |
889 | { | |
7e7ab095 MS |
890 | .procname = "peers", |
891 | .mode = 0444, | |
d7e09d03 PT |
892 | .proc_handler = &proc_lnet_peers, |
893 | }, | |
894 | { | |
7e7ab095 MS |
895 | .procname = "buffers", |
896 | .mode = 0444, | |
d7e09d03 PT |
897 | .proc_handler = &proc_lnet_buffers, |
898 | }, | |
899 | { | |
7e7ab095 MS |
900 | .procname = "nis", |
901 | .mode = 0444, | |
d7e09d03 PT |
902 | .proc_handler = &proc_lnet_nis, |
903 | }, | |
904 | { | |
7e7ab095 MS |
905 | .procname = "portal_rotor", |
906 | .mode = 0644, | |
d7e09d03 PT |
907 | .proc_handler = &proc_lnet_portal_rotor, |
908 | }, | |
909 | { | |
d7e09d03 PT |
910 | } |
911 | }; | |
912 | ||
b03f395a | 913 | void lnet_router_debugfs_init(void) |
d7e09d03 | 914 | { |
b03f395a | 915 | lustre_insert_debugfs(lnet_table, NULL); |
d7e09d03 PT |
916 | } |
917 | ||
b03f395a | 918 | void lnet_router_debugfs_fini(void) |
d7e09d03 | 919 | { |
d7e09d03 | 920 | } |