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1/*
2 * Copyright (c) 2014, Ericsson AB
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the names of the copyright holders nor the names of its
14 * contributors may be used to endorse or promote products derived from
15 * this software without specific prior written permission.
16 *
17 * Alternatively, this software may be distributed under the terms of the
18 * GNU General Public License ("GPL") version 2 as published by the Free
19 * Software Foundation.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
22 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
25 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
32 */
33
34#include "core.h"
35#include "bearer.h"
36#include "link.h"
37#include "name_table.h"
38#include "socket.h"
39#include "node.h"
40#include "net.h"
41#include <net/genetlink.h>
42#include <linux/tipc_config.h>
43
44/* The legacy API had an artificial message length limit called
45 * ULTRA_STRING_MAX_LEN.
46 */
47#define ULTRA_STRING_MAX_LEN 32768
48
49#define TIPC_SKB_MAX TLV_SPACE(ULTRA_STRING_MAX_LEN)
50
51#define REPLY_TRUNCATED "<truncated>\n"
52
53struct tipc_nl_compat_msg {
54 u16 cmd;
55 int rep_type;
56 int rep_size;
57 int req_type;
58 struct net *net;
59 struct sk_buff *rep;
60 struct tlv_desc *req;
61 struct sock *dst_sk;
62};
63
64struct tipc_nl_compat_cmd_dump {
65 int (*header)(struct tipc_nl_compat_msg *);
66 int (*dumpit)(struct sk_buff *, struct netlink_callback *);
67 int (*format)(struct tipc_nl_compat_msg *msg, struct nlattr **attrs);
68};
69
70struct tipc_nl_compat_cmd_doit {
71 int (*doit)(struct sk_buff *skb, struct genl_info *info);
72 int (*transcode)(struct tipc_nl_compat_cmd_doit *cmd,
73 struct sk_buff *skb, struct tipc_nl_compat_msg *msg);
74};
75
76static int tipc_skb_tailroom(struct sk_buff *skb)
77{
78 int tailroom;
79 int limit;
80
81 tailroom = skb_tailroom(skb);
82 limit = TIPC_SKB_MAX - skb->len;
83
84 if (tailroom < limit)
85 return tailroom;
86
87 return limit;
88}
89
90static int tipc_add_tlv(struct sk_buff *skb, u16 type, void *data, u16 len)
91{
92 struct tlv_desc *tlv = (struct tlv_desc *)skb_tail_pointer(skb);
93
94 if (tipc_skb_tailroom(skb) < TLV_SPACE(len))
95 return -EMSGSIZE;
96
97 skb_put(skb, TLV_SPACE(len));
98 tlv->tlv_type = htons(type);
99 tlv->tlv_len = htons(TLV_LENGTH(len));
100 if (len && data)
101 memcpy(TLV_DATA(tlv), data, len);
102
103 return 0;
104}
105
106static void tipc_tlv_init(struct sk_buff *skb, u16 type)
107{
108 struct tlv_desc *tlv = (struct tlv_desc *)skb->data;
109
110 TLV_SET_LEN(tlv, 0);
111 TLV_SET_TYPE(tlv, type);
112 skb_put(skb, sizeof(struct tlv_desc));
113}
114
115static int tipc_tlv_sprintf(struct sk_buff *skb, const char *fmt, ...)
116{
117 int n;
118 u16 len;
119 u32 rem;
120 char *buf;
121 struct tlv_desc *tlv;
122 va_list args;
123
124 rem = tipc_skb_tailroom(skb);
125
126 tlv = (struct tlv_desc *)skb->data;
127 len = TLV_GET_LEN(tlv);
128 buf = TLV_DATA(tlv) + len;
129
130 va_start(args, fmt);
131 n = vscnprintf(buf, rem, fmt, args);
132 va_end(args);
133
134 TLV_SET_LEN(tlv, n + len);
135 skb_put(skb, n);
136
137 return n;
138}
139
140static struct sk_buff *tipc_tlv_alloc(int size)
141{
142 int hdr_len;
143 struct sk_buff *buf;
144
145 size = TLV_SPACE(size);
146 hdr_len = nlmsg_total_size(GENL_HDRLEN + TIPC_GENL_HDRLEN);
147
148 buf = alloc_skb(hdr_len + size, GFP_KERNEL);
149 if (!buf)
150 return NULL;
151
152 skb_reserve(buf, hdr_len);
153
154 return buf;
155}
156
157static struct sk_buff *tipc_get_err_tlv(char *str)
158{
159 int str_len = strlen(str) + 1;
160 struct sk_buff *buf;
161
162 buf = tipc_tlv_alloc(TLV_SPACE(str_len));
163 if (buf)
164 tipc_add_tlv(buf, TIPC_TLV_ERROR_STRING, str, str_len);
165
166 return buf;
167}
168
169static int __tipc_nl_compat_dumpit(struct tipc_nl_compat_cmd_dump *cmd,
170 struct tipc_nl_compat_msg *msg,
171 struct sk_buff *arg)
172{
173 int len = 0;
174 int err;
175 struct sk_buff *buf;
176 struct nlmsghdr *nlmsg;
177 struct netlink_callback cb;
178
179 memset(&cb, 0, sizeof(cb));
180 cb.nlh = (struct nlmsghdr *)arg->data;
181 cb.skb = arg;
182
183 buf = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
184 if (!buf)
185 return -ENOMEM;
186
187 buf->sk = msg->dst_sk;
188
189 do {
190 int rem;
191
192 len = (*cmd->dumpit)(buf, &cb);
193
194 nlmsg_for_each_msg(nlmsg, nlmsg_hdr(buf), len, rem) {
195 struct nlattr **attrs;
196
197 err = tipc_nlmsg_parse(nlmsg, &attrs);
198 if (err)
199 goto err_out;
200
201 err = (*cmd->format)(msg, attrs);
202 if (err)
203 goto err_out;
204
205 if (tipc_skb_tailroom(msg->rep) <= 1) {
206 err = -EMSGSIZE;
207 goto err_out;
208 }
209 }
210
211 skb_reset_tail_pointer(buf);
212 buf->len = 0;
213
214 } while (len);
215
216 err = 0;
217
218err_out:
219 kfree_skb(buf);
220
221 if (err == -EMSGSIZE) {
222 /* The legacy API only considered messages filling
223 * "ULTRA_STRING_MAX_LEN" to be truncated.
224 */
225 if ((TIPC_SKB_MAX - msg->rep->len) <= 1) {
226 char *tail = skb_tail_pointer(msg->rep);
227
228 if (*tail != '\0')
229 sprintf(tail - sizeof(REPLY_TRUNCATED) - 1,
230 REPLY_TRUNCATED);
231 }
232
233 return 0;
234 }
235
236 return err;
237}
238
239static int tipc_nl_compat_dumpit(struct tipc_nl_compat_cmd_dump *cmd,
240 struct tipc_nl_compat_msg *msg)
241{
242 int err;
243 struct sk_buff *arg;
244
245 if (msg->req_type && !TLV_CHECK_TYPE(msg->req, msg->req_type))
246 return -EINVAL;
247
248 msg->rep = tipc_tlv_alloc(msg->rep_size);
249 if (!msg->rep)
250 return -ENOMEM;
251
252 if (msg->rep_type)
253 tipc_tlv_init(msg->rep, msg->rep_type);
254
255 if (cmd->header)
256 (*cmd->header)(msg);
257
258 arg = nlmsg_new(0, GFP_KERNEL);
259 if (!arg) {
260 kfree_skb(msg->rep);
261 msg->rep = NULL;
262 return -ENOMEM;
263 }
264
265 err = __tipc_nl_compat_dumpit(cmd, msg, arg);
266 if (err) {
267 kfree_skb(msg->rep);
268 msg->rep = NULL;
269 }
270 kfree_skb(arg);
271
272 return err;
273}
274
275static int __tipc_nl_compat_doit(struct tipc_nl_compat_cmd_doit *cmd,
276 struct tipc_nl_compat_msg *msg)
277{
278 int err;
279 struct sk_buff *doit_buf;
280 struct sk_buff *trans_buf;
281 struct nlattr **attrbuf;
282 struct genl_info info;
283
284 trans_buf = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
285 if (!trans_buf)
286 return -ENOMEM;
287
288 attrbuf = kmalloc((tipc_genl_family.maxattr + 1) *
289 sizeof(struct nlattr *), GFP_KERNEL);
290 if (!attrbuf) {
291 err = -ENOMEM;
292 goto trans_out;
293 }
294
295 doit_buf = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
296 if (!doit_buf) {
297 err = -ENOMEM;
298 goto attrbuf_out;
299 }
300
301 memset(&info, 0, sizeof(info));
302 info.attrs = attrbuf;
303
304 rtnl_lock();
305 err = (*cmd->transcode)(cmd, trans_buf, msg);
306 if (err)
307 goto doit_out;
308
309 err = nla_parse(attrbuf, tipc_genl_family.maxattr,
310 (const struct nlattr *)trans_buf->data,
311 trans_buf->len, NULL, NULL);
312 if (err)
313 goto doit_out;
314
315 doit_buf->sk = msg->dst_sk;
316
317 err = (*cmd->doit)(doit_buf, &info);
318doit_out:
319 rtnl_unlock();
320
321 kfree_skb(doit_buf);
322attrbuf_out:
323 kfree(attrbuf);
324trans_out:
325 kfree_skb(trans_buf);
326
327 return err;
328}
329
330static int tipc_nl_compat_doit(struct tipc_nl_compat_cmd_doit *cmd,
331 struct tipc_nl_compat_msg *msg)
332{
333 int err;
334
335 if (msg->req_type && !TLV_CHECK_TYPE(msg->req, msg->req_type))
336 return -EINVAL;
337
338 err = __tipc_nl_compat_doit(cmd, msg);
339 if (err)
340 return err;
341
342 /* The legacy API considered an empty message a success message */
343 msg->rep = tipc_tlv_alloc(0);
344 if (!msg->rep)
345 return -ENOMEM;
346
347 return 0;
348}
349
350static int tipc_nl_compat_bearer_dump(struct tipc_nl_compat_msg *msg,
351 struct nlattr **attrs)
352{
353 struct nlattr *bearer[TIPC_NLA_BEARER_MAX + 1];
354 int err;
355
356 if (!attrs[TIPC_NLA_BEARER])
357 return -EINVAL;
358
359 err = nla_parse_nested(bearer, TIPC_NLA_BEARER_MAX,
360 attrs[TIPC_NLA_BEARER], NULL, NULL);
361 if (err)
362 return err;
363
364 return tipc_add_tlv(msg->rep, TIPC_TLV_BEARER_NAME,
365 nla_data(bearer[TIPC_NLA_BEARER_NAME]),
366 nla_len(bearer[TIPC_NLA_BEARER_NAME]));
367}
368
369static int tipc_nl_compat_bearer_enable(struct tipc_nl_compat_cmd_doit *cmd,
370 struct sk_buff *skb,
371 struct tipc_nl_compat_msg *msg)
372{
373 struct nlattr *prop;
374 struct nlattr *bearer;
375 struct tipc_bearer_config *b;
376
377 b = (struct tipc_bearer_config *)TLV_DATA(msg->req);
378
379 bearer = nla_nest_start(skb, TIPC_NLA_BEARER);
380 if (!bearer)
381 return -EMSGSIZE;
382
383 if (nla_put_string(skb, TIPC_NLA_BEARER_NAME, b->name))
384 return -EMSGSIZE;
385
386 if (nla_put_u32(skb, TIPC_NLA_BEARER_DOMAIN, ntohl(b->disc_domain)))
387 return -EMSGSIZE;
388
389 if (ntohl(b->priority) <= TIPC_MAX_LINK_PRI) {
390 prop = nla_nest_start(skb, TIPC_NLA_BEARER_PROP);
391 if (!prop)
392 return -EMSGSIZE;
393 if (nla_put_u32(skb, TIPC_NLA_PROP_PRIO, ntohl(b->priority)))
394 return -EMSGSIZE;
395 nla_nest_end(skb, prop);
396 }
397 nla_nest_end(skb, bearer);
398
399 return 0;
400}
401
402static int tipc_nl_compat_bearer_disable(struct tipc_nl_compat_cmd_doit *cmd,
403 struct sk_buff *skb,
404 struct tipc_nl_compat_msg *msg)
405{
406 char *name;
407 struct nlattr *bearer;
408
409 name = (char *)TLV_DATA(msg->req);
410
411 bearer = nla_nest_start(skb, TIPC_NLA_BEARER);
412 if (!bearer)
413 return -EMSGSIZE;
414
415 if (nla_put_string(skb, TIPC_NLA_BEARER_NAME, name))
416 return -EMSGSIZE;
417
418 nla_nest_end(skb, bearer);
419
420 return 0;
421}
422
423static inline u32 perc(u32 count, u32 total)
424{
425 return (count * 100 + (total / 2)) / total;
426}
427
428static void __fill_bc_link_stat(struct tipc_nl_compat_msg *msg,
429 struct nlattr *prop[], struct nlattr *stats[])
430{
431 tipc_tlv_sprintf(msg->rep, " Window:%u packets\n",
432 nla_get_u32(prop[TIPC_NLA_PROP_WIN]));
433
434 tipc_tlv_sprintf(msg->rep,
435 " RX packets:%u fragments:%u/%u bundles:%u/%u\n",
436 nla_get_u32(stats[TIPC_NLA_STATS_RX_INFO]),
437 nla_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTS]),
438 nla_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTED]),
439 nla_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLES]),
440 nla_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLED]));
441
442 tipc_tlv_sprintf(msg->rep,
443 " TX packets:%u fragments:%u/%u bundles:%u/%u\n",
444 nla_get_u32(stats[TIPC_NLA_STATS_TX_INFO]),
445 nla_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTS]),
446 nla_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTED]),
447 nla_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLES]),
448 nla_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLED]));
449
450 tipc_tlv_sprintf(msg->rep, " RX naks:%u defs:%u dups:%u\n",
451 nla_get_u32(stats[TIPC_NLA_STATS_RX_NACKS]),
452 nla_get_u32(stats[TIPC_NLA_STATS_RX_DEFERRED]),
453 nla_get_u32(stats[TIPC_NLA_STATS_DUPLICATES]));
454
455 tipc_tlv_sprintf(msg->rep, " TX naks:%u acks:%u dups:%u\n",
456 nla_get_u32(stats[TIPC_NLA_STATS_TX_NACKS]),
457 nla_get_u32(stats[TIPC_NLA_STATS_TX_ACKS]),
458 nla_get_u32(stats[TIPC_NLA_STATS_RETRANSMITTED]));
459
460 tipc_tlv_sprintf(msg->rep,
461 " Congestion link:%u Send queue max:%u avg:%u",
462 nla_get_u32(stats[TIPC_NLA_STATS_LINK_CONGS]),
463 nla_get_u32(stats[TIPC_NLA_STATS_MAX_QUEUE]),
464 nla_get_u32(stats[TIPC_NLA_STATS_AVG_QUEUE]));
465}
466
467static int tipc_nl_compat_link_stat_dump(struct tipc_nl_compat_msg *msg,
468 struct nlattr **attrs)
469{
470 char *name;
471 struct nlattr *link[TIPC_NLA_LINK_MAX + 1];
472 struct nlattr *prop[TIPC_NLA_PROP_MAX + 1];
473 struct nlattr *stats[TIPC_NLA_STATS_MAX + 1];
474 int err;
475
476 if (!attrs[TIPC_NLA_LINK])
477 return -EINVAL;
478
479 err = nla_parse_nested(link, TIPC_NLA_LINK_MAX, attrs[TIPC_NLA_LINK],
480 NULL, NULL);
481 if (err)
482 return err;
483
484 if (!link[TIPC_NLA_LINK_PROP])
485 return -EINVAL;
486
487 err = nla_parse_nested(prop, TIPC_NLA_PROP_MAX,
488 link[TIPC_NLA_LINK_PROP], NULL, NULL);
489 if (err)
490 return err;
491
492 if (!link[TIPC_NLA_LINK_STATS])
493 return -EINVAL;
494
495 err = nla_parse_nested(stats, TIPC_NLA_STATS_MAX,
496 link[TIPC_NLA_LINK_STATS], NULL, NULL);
497 if (err)
498 return err;
499
500 name = (char *)TLV_DATA(msg->req);
501 if (strcmp(name, nla_data(link[TIPC_NLA_LINK_NAME])) != 0)
502 return 0;
503
504 tipc_tlv_sprintf(msg->rep, "\nLink <%s>\n",
505 nla_data(link[TIPC_NLA_LINK_NAME]));
506
507 if (link[TIPC_NLA_LINK_BROADCAST]) {
508 __fill_bc_link_stat(msg, prop, stats);
509 return 0;
510 }
511
512 if (link[TIPC_NLA_LINK_ACTIVE])
513 tipc_tlv_sprintf(msg->rep, " ACTIVE");
514 else if (link[TIPC_NLA_LINK_UP])
515 tipc_tlv_sprintf(msg->rep, " STANDBY");
516 else
517 tipc_tlv_sprintf(msg->rep, " DEFUNCT");
518
519 tipc_tlv_sprintf(msg->rep, " MTU:%u Priority:%u",
520 nla_get_u32(link[TIPC_NLA_LINK_MTU]),
521 nla_get_u32(prop[TIPC_NLA_PROP_PRIO]));
522
523 tipc_tlv_sprintf(msg->rep, " Tolerance:%u ms Window:%u packets\n",
524 nla_get_u32(prop[TIPC_NLA_PROP_TOL]),
525 nla_get_u32(prop[TIPC_NLA_PROP_WIN]));
526
527 tipc_tlv_sprintf(msg->rep,
528 " RX packets:%u fragments:%u/%u bundles:%u/%u\n",
529 nla_get_u32(link[TIPC_NLA_LINK_RX]) -
530 nla_get_u32(stats[TIPC_NLA_STATS_RX_INFO]),
531 nla_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTS]),
532 nla_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTED]),
533 nla_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLES]),
534 nla_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLED]));
535
536 tipc_tlv_sprintf(msg->rep,
537 " TX packets:%u fragments:%u/%u bundles:%u/%u\n",
538 nla_get_u32(link[TIPC_NLA_LINK_TX]) -
539 nla_get_u32(stats[TIPC_NLA_STATS_TX_INFO]),
540 nla_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTS]),
541 nla_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTED]),
542 nla_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLES]),
543 nla_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLED]));
544
545 tipc_tlv_sprintf(msg->rep,
546 " TX profile sample:%u packets average:%u octets\n",
547 nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_CNT]),
548 nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_TOT]) /
549 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT]));
550
551 tipc_tlv_sprintf(msg->rep,
552 " 0-64:%u%% -256:%u%% -1024:%u%% -4096:%u%% ",
553 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P0]),
554 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])),
555 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P1]),
556 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])),
557 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P2]),
558 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])),
559 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P3]),
560 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])));
561
562 tipc_tlv_sprintf(msg->rep, "-16384:%u%% -32768:%u%% -66000:%u%%\n",
563 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P4]),
564 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])),
565 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P5]),
566 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])),
567 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P6]),
568 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])));
569
570 tipc_tlv_sprintf(msg->rep,
571 " RX states:%u probes:%u naks:%u defs:%u dups:%u\n",
572 nla_get_u32(stats[TIPC_NLA_STATS_RX_STATES]),
573 nla_get_u32(stats[TIPC_NLA_STATS_RX_PROBES]),
574 nla_get_u32(stats[TIPC_NLA_STATS_RX_NACKS]),
575 nla_get_u32(stats[TIPC_NLA_STATS_RX_DEFERRED]),
576 nla_get_u32(stats[TIPC_NLA_STATS_DUPLICATES]));
577
578 tipc_tlv_sprintf(msg->rep,
579 " TX states:%u probes:%u naks:%u acks:%u dups:%u\n",
580 nla_get_u32(stats[TIPC_NLA_STATS_TX_STATES]),
581 nla_get_u32(stats[TIPC_NLA_STATS_TX_PROBES]),
582 nla_get_u32(stats[TIPC_NLA_STATS_TX_NACKS]),
583 nla_get_u32(stats[TIPC_NLA_STATS_TX_ACKS]),
584 nla_get_u32(stats[TIPC_NLA_STATS_RETRANSMITTED]));
585
586 tipc_tlv_sprintf(msg->rep,
587 " Congestion link:%u Send queue max:%u avg:%u",
588 nla_get_u32(stats[TIPC_NLA_STATS_LINK_CONGS]),
589 nla_get_u32(stats[TIPC_NLA_STATS_MAX_QUEUE]),
590 nla_get_u32(stats[TIPC_NLA_STATS_AVG_QUEUE]));
591
592 return 0;
593}
594
595static int tipc_nl_compat_link_dump(struct tipc_nl_compat_msg *msg,
596 struct nlattr **attrs)
597{
598 struct nlattr *link[TIPC_NLA_LINK_MAX + 1];
599 struct tipc_link_info link_info;
600 int err;
601
602 if (!attrs[TIPC_NLA_LINK])
603 return -EINVAL;
604
605 err = nla_parse_nested(link, TIPC_NLA_LINK_MAX, attrs[TIPC_NLA_LINK],
606 NULL, NULL);
607 if (err)
608 return err;
609
610 link_info.dest = nla_get_flag(link[TIPC_NLA_LINK_DEST]);
611 link_info.up = htonl(nla_get_flag(link[TIPC_NLA_LINK_UP]));
612 nla_strlcpy(link_info.str, link[TIPC_NLA_LINK_NAME],
613 TIPC_MAX_LINK_NAME);
614
615 return tipc_add_tlv(msg->rep, TIPC_TLV_LINK_INFO,
616 &link_info, sizeof(link_info));
617}
618
619static int __tipc_add_link_prop(struct sk_buff *skb,
620 struct tipc_nl_compat_msg *msg,
621 struct tipc_link_config *lc)
622{
623 switch (msg->cmd) {
624 case TIPC_CMD_SET_LINK_PRI:
625 return nla_put_u32(skb, TIPC_NLA_PROP_PRIO, ntohl(lc->value));
626 case TIPC_CMD_SET_LINK_TOL:
627 return nla_put_u32(skb, TIPC_NLA_PROP_TOL, ntohl(lc->value));
628 case TIPC_CMD_SET_LINK_WINDOW:
629 return nla_put_u32(skb, TIPC_NLA_PROP_WIN, ntohl(lc->value));
630 }
631
632 return -EINVAL;
633}
634
635static int tipc_nl_compat_media_set(struct sk_buff *skb,
636 struct tipc_nl_compat_msg *msg)
637{
638 struct nlattr *prop;
639 struct nlattr *media;
640 struct tipc_link_config *lc;
641
642 lc = (struct tipc_link_config *)TLV_DATA(msg->req);
643
644 media = nla_nest_start(skb, TIPC_NLA_MEDIA);
645 if (!media)
646 return -EMSGSIZE;
647
648 if (nla_put_string(skb, TIPC_NLA_MEDIA_NAME, lc->name))
649 return -EMSGSIZE;
650
651 prop = nla_nest_start(skb, TIPC_NLA_MEDIA_PROP);
652 if (!prop)
653 return -EMSGSIZE;
654
655 __tipc_add_link_prop(skb, msg, lc);
656 nla_nest_end(skb, prop);
657 nla_nest_end(skb, media);
658
659 return 0;
660}
661
662static int tipc_nl_compat_bearer_set(struct sk_buff *skb,
663 struct tipc_nl_compat_msg *msg)
664{
665 struct nlattr *prop;
666 struct nlattr *bearer;
667 struct tipc_link_config *lc;
668
669 lc = (struct tipc_link_config *)TLV_DATA(msg->req);
670
671 bearer = nla_nest_start(skb, TIPC_NLA_BEARER);
672 if (!bearer)
673 return -EMSGSIZE;
674
675 if (nla_put_string(skb, TIPC_NLA_BEARER_NAME, lc->name))
676 return -EMSGSIZE;
677
678 prop = nla_nest_start(skb, TIPC_NLA_BEARER_PROP);
679 if (!prop)
680 return -EMSGSIZE;
681
682 __tipc_add_link_prop(skb, msg, lc);
683 nla_nest_end(skb, prop);
684 nla_nest_end(skb, bearer);
685
686 return 0;
687}
688
689static int __tipc_nl_compat_link_set(struct sk_buff *skb,
690 struct tipc_nl_compat_msg *msg)
691{
692 struct nlattr *prop;
693 struct nlattr *link;
694 struct tipc_link_config *lc;
695
696 lc = (struct tipc_link_config *)TLV_DATA(msg->req);
697
698 link = nla_nest_start(skb, TIPC_NLA_LINK);
699 if (!link)
700 return -EMSGSIZE;
701
702 if (nla_put_string(skb, TIPC_NLA_LINK_NAME, lc->name))
703 return -EMSGSIZE;
704
705 prop = nla_nest_start(skb, TIPC_NLA_LINK_PROP);
706 if (!prop)
707 return -EMSGSIZE;
708
709 __tipc_add_link_prop(skb, msg, lc);
710 nla_nest_end(skb, prop);
711 nla_nest_end(skb, link);
712
713 return 0;
714}
715
716static int tipc_nl_compat_link_set(struct tipc_nl_compat_cmd_doit *cmd,
717 struct sk_buff *skb,
718 struct tipc_nl_compat_msg *msg)
719{
720 struct tipc_link_config *lc;
721 struct tipc_bearer *bearer;
722 struct tipc_media *media;
723
724 lc = (struct tipc_link_config *)TLV_DATA(msg->req);
725
726 media = tipc_media_find(lc->name);
727 if (media) {
728 cmd->doit = &__tipc_nl_media_set;
729 return tipc_nl_compat_media_set(skb, msg);
730 }
731
732 bearer = tipc_bearer_find(msg->net, lc->name);
733 if (bearer) {
734 cmd->doit = &__tipc_nl_bearer_set;
735 return tipc_nl_compat_bearer_set(skb, msg);
736 }
737
738 return __tipc_nl_compat_link_set(skb, msg);
739}
740
741static int tipc_nl_compat_link_reset_stats(struct tipc_nl_compat_cmd_doit *cmd,
742 struct sk_buff *skb,
743 struct tipc_nl_compat_msg *msg)
744{
745 char *name;
746 struct nlattr *link;
747
748 name = (char *)TLV_DATA(msg->req);
749
750 link = nla_nest_start(skb, TIPC_NLA_LINK);
751 if (!link)
752 return -EMSGSIZE;
753
754 if (nla_put_string(skb, TIPC_NLA_LINK_NAME, name))
755 return -EMSGSIZE;
756
757 nla_nest_end(skb, link);
758
759 return 0;
760}
761
762static int tipc_nl_compat_name_table_dump_header(struct tipc_nl_compat_msg *msg)
763{
764 int i;
765 u32 depth;
766 struct tipc_name_table_query *ntq;
767 static const char * const header[] = {
768 "Type ",
769 "Lower Upper ",
770 "Port Identity ",
771 "Publication Scope"
772 };
773
774 ntq = (struct tipc_name_table_query *)TLV_DATA(msg->req);
775
776 depth = ntohl(ntq->depth);
777
778 if (depth > 4)
779 depth = 4;
780 for (i = 0; i < depth; i++)
781 tipc_tlv_sprintf(msg->rep, header[i]);
782 tipc_tlv_sprintf(msg->rep, "\n");
783
784 return 0;
785}
786
787static int tipc_nl_compat_name_table_dump(struct tipc_nl_compat_msg *msg,
788 struct nlattr **attrs)
789{
790 char port_str[27];
791 struct tipc_name_table_query *ntq;
792 struct nlattr *nt[TIPC_NLA_NAME_TABLE_MAX + 1];
793 struct nlattr *publ[TIPC_NLA_PUBL_MAX + 1];
794 u32 node, depth, type, lowbound, upbound;
795 static const char * const scope_str[] = {"", " zone", " cluster",
796 " node"};
797 int err;
798
799 if (!attrs[TIPC_NLA_NAME_TABLE])
800 return -EINVAL;
801
802 err = nla_parse_nested(nt, TIPC_NLA_NAME_TABLE_MAX,
803 attrs[TIPC_NLA_NAME_TABLE], NULL, NULL);
804 if (err)
805 return err;
806
807 if (!nt[TIPC_NLA_NAME_TABLE_PUBL])
808 return -EINVAL;
809
810 err = nla_parse_nested(publ, TIPC_NLA_PUBL_MAX,
811 nt[TIPC_NLA_NAME_TABLE_PUBL], NULL, NULL);
812 if (err)
813 return err;
814
815 ntq = (struct tipc_name_table_query *)TLV_DATA(msg->req);
816
817 depth = ntohl(ntq->depth);
818 type = ntohl(ntq->type);
819 lowbound = ntohl(ntq->lowbound);
820 upbound = ntohl(ntq->upbound);
821
822 if (!(depth & TIPC_NTQ_ALLTYPES) &&
823 (type != nla_get_u32(publ[TIPC_NLA_PUBL_TYPE])))
824 return 0;
825 if (lowbound && (lowbound > nla_get_u32(publ[TIPC_NLA_PUBL_UPPER])))
826 return 0;
827 if (upbound && (upbound < nla_get_u32(publ[TIPC_NLA_PUBL_LOWER])))
828 return 0;
829
830 tipc_tlv_sprintf(msg->rep, "%-10u ",
831 nla_get_u32(publ[TIPC_NLA_PUBL_TYPE]));
832
833 if (depth == 1)
834 goto out;
835
836 tipc_tlv_sprintf(msg->rep, "%-10u %-10u ",
837 nla_get_u32(publ[TIPC_NLA_PUBL_LOWER]),
838 nla_get_u32(publ[TIPC_NLA_PUBL_UPPER]));
839
840 if (depth == 2)
841 goto out;
842
843 node = nla_get_u32(publ[TIPC_NLA_PUBL_NODE]);
844 sprintf(port_str, "<%u.%u.%u:%u>", tipc_zone(node), tipc_cluster(node),
845 tipc_node(node), nla_get_u32(publ[TIPC_NLA_PUBL_REF]));
846 tipc_tlv_sprintf(msg->rep, "%-26s ", port_str);
847
848 if (depth == 3)
849 goto out;
850
851 tipc_tlv_sprintf(msg->rep, "%-10u %s",
852 nla_get_u32(publ[TIPC_NLA_PUBL_KEY]),
853 scope_str[nla_get_u32(publ[TIPC_NLA_PUBL_SCOPE])]);
854out:
855 tipc_tlv_sprintf(msg->rep, "\n");
856
857 return 0;
858}
859
860static int __tipc_nl_compat_publ_dump(struct tipc_nl_compat_msg *msg,
861 struct nlattr **attrs)
862{
863 u32 type, lower, upper;
864 struct nlattr *publ[TIPC_NLA_PUBL_MAX + 1];
865 int err;
866
867 if (!attrs[TIPC_NLA_PUBL])
868 return -EINVAL;
869
870 err = nla_parse_nested(publ, TIPC_NLA_PUBL_MAX, attrs[TIPC_NLA_PUBL],
871 NULL, NULL);
872 if (err)
873 return err;
874
875 type = nla_get_u32(publ[TIPC_NLA_PUBL_TYPE]);
876 lower = nla_get_u32(publ[TIPC_NLA_PUBL_LOWER]);
877 upper = nla_get_u32(publ[TIPC_NLA_PUBL_UPPER]);
878
879 if (lower == upper)
880 tipc_tlv_sprintf(msg->rep, " {%u,%u}", type, lower);
881 else
882 tipc_tlv_sprintf(msg->rep, " {%u,%u,%u}", type, lower, upper);
883
884 return 0;
885}
886
887static int tipc_nl_compat_publ_dump(struct tipc_nl_compat_msg *msg, u32 sock)
888{
889 int err;
890 void *hdr;
891 struct nlattr *nest;
892 struct sk_buff *args;
893 struct tipc_nl_compat_cmd_dump dump;
894
895 args = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
896 if (!args)
897 return -ENOMEM;
898
899 hdr = genlmsg_put(args, 0, 0, &tipc_genl_family, NLM_F_MULTI,
900 TIPC_NL_PUBL_GET);
901
902 nest = nla_nest_start(args, TIPC_NLA_SOCK);
903 if (!nest) {
904 kfree_skb(args);
905 return -EMSGSIZE;
906 }
907
908 if (nla_put_u32(args, TIPC_NLA_SOCK_REF, sock)) {
909 kfree_skb(args);
910 return -EMSGSIZE;
911 }
912
913 nla_nest_end(args, nest);
914 genlmsg_end(args, hdr);
915
916 dump.dumpit = tipc_nl_publ_dump;
917 dump.format = __tipc_nl_compat_publ_dump;
918
919 err = __tipc_nl_compat_dumpit(&dump, msg, args);
920
921 kfree_skb(args);
922
923 return err;
924}
925
926static int tipc_nl_compat_sk_dump(struct tipc_nl_compat_msg *msg,
927 struct nlattr **attrs)
928{
929 int err;
930 u32 sock_ref;
931 struct nlattr *sock[TIPC_NLA_SOCK_MAX + 1];
932
933 if (!attrs[TIPC_NLA_SOCK])
934 return -EINVAL;
935
936 err = nla_parse_nested(sock, TIPC_NLA_SOCK_MAX, attrs[TIPC_NLA_SOCK],
937 NULL, NULL);
938 if (err)
939 return err;
940
941 sock_ref = nla_get_u32(sock[TIPC_NLA_SOCK_REF]);
942 tipc_tlv_sprintf(msg->rep, "%u:", sock_ref);
943
944 if (sock[TIPC_NLA_SOCK_CON]) {
945 u32 node;
946 struct nlattr *con[TIPC_NLA_CON_MAX + 1];
947
948 nla_parse_nested(con, TIPC_NLA_CON_MAX,
949 sock[TIPC_NLA_SOCK_CON], NULL, NULL);
950
951 node = nla_get_u32(con[TIPC_NLA_CON_NODE]);
952 tipc_tlv_sprintf(msg->rep, " connected to <%u.%u.%u:%u>",
953 tipc_zone(node),
954 tipc_cluster(node),
955 tipc_node(node),
956 nla_get_u32(con[TIPC_NLA_CON_SOCK]));
957
958 if (con[TIPC_NLA_CON_FLAG])
959 tipc_tlv_sprintf(msg->rep, " via {%u,%u}\n",
960 nla_get_u32(con[TIPC_NLA_CON_TYPE]),
961 nla_get_u32(con[TIPC_NLA_CON_INST]));
962 else
963 tipc_tlv_sprintf(msg->rep, "\n");
964 } else if (sock[TIPC_NLA_SOCK_HAS_PUBL]) {
965 tipc_tlv_sprintf(msg->rep, " bound to");
966
967 err = tipc_nl_compat_publ_dump(msg, sock_ref);
968 if (err)
969 return err;
970 }
971 tipc_tlv_sprintf(msg->rep, "\n");
972
973 return 0;
974}
975
976static int tipc_nl_compat_media_dump(struct tipc_nl_compat_msg *msg,
977 struct nlattr **attrs)
978{
979 struct nlattr *media[TIPC_NLA_MEDIA_MAX + 1];
980 int err;
981
982 if (!attrs[TIPC_NLA_MEDIA])
983 return -EINVAL;
984
985 err = nla_parse_nested(media, TIPC_NLA_MEDIA_MAX,
986 attrs[TIPC_NLA_MEDIA], NULL, NULL);
987 if (err)
988 return err;
989
990 return tipc_add_tlv(msg->rep, TIPC_TLV_MEDIA_NAME,
991 nla_data(media[TIPC_NLA_MEDIA_NAME]),
992 nla_len(media[TIPC_NLA_MEDIA_NAME]));
993}
994
995static int tipc_nl_compat_node_dump(struct tipc_nl_compat_msg *msg,
996 struct nlattr **attrs)
997{
998 struct tipc_node_info node_info;
999 struct nlattr *node[TIPC_NLA_NODE_MAX + 1];
1000 int err;
1001
1002 if (!attrs[TIPC_NLA_NODE])
1003 return -EINVAL;
1004
1005 err = nla_parse_nested(node, TIPC_NLA_NODE_MAX, attrs[TIPC_NLA_NODE],
1006 NULL, NULL);
1007 if (err)
1008 return err;
1009
1010 node_info.addr = htonl(nla_get_u32(node[TIPC_NLA_NODE_ADDR]));
1011 node_info.up = htonl(nla_get_flag(node[TIPC_NLA_NODE_UP]));
1012
1013 return tipc_add_tlv(msg->rep, TIPC_TLV_NODE_INFO, &node_info,
1014 sizeof(node_info));
1015}
1016
1017static int tipc_nl_compat_net_set(struct tipc_nl_compat_cmd_doit *cmd,
1018 struct sk_buff *skb,
1019 struct tipc_nl_compat_msg *msg)
1020{
1021 u32 val;
1022 struct nlattr *net;
1023
1024 val = ntohl(*(__be32 *)TLV_DATA(msg->req));
1025
1026 net = nla_nest_start(skb, TIPC_NLA_NET);
1027 if (!net)
1028 return -EMSGSIZE;
1029
1030 if (msg->cmd == TIPC_CMD_SET_NODE_ADDR) {
1031 if (nla_put_u32(skb, TIPC_NLA_NET_ADDR, val))
1032 return -EMSGSIZE;
1033 } else if (msg->cmd == TIPC_CMD_SET_NETID) {
1034 if (nla_put_u32(skb, TIPC_NLA_NET_ID, val))
1035 return -EMSGSIZE;
1036 }
1037 nla_nest_end(skb, net);
1038
1039 return 0;
1040}
1041
1042static int tipc_nl_compat_net_dump(struct tipc_nl_compat_msg *msg,
1043 struct nlattr **attrs)
1044{
1045 __be32 id;
1046 struct nlattr *net[TIPC_NLA_NET_MAX + 1];
1047 int err;
1048
1049 if (!attrs[TIPC_NLA_NET])
1050 return -EINVAL;
1051
1052 err = nla_parse_nested(net, TIPC_NLA_NET_MAX, attrs[TIPC_NLA_NET],
1053 NULL, NULL);
1054 if (err)
1055 return err;
1056
1057 id = htonl(nla_get_u32(net[TIPC_NLA_NET_ID]));
1058
1059 return tipc_add_tlv(msg->rep, TIPC_TLV_UNSIGNED, &id, sizeof(id));
1060}
1061
1062static int tipc_cmd_show_stats_compat(struct tipc_nl_compat_msg *msg)
1063{
1064 msg->rep = tipc_tlv_alloc(ULTRA_STRING_MAX_LEN);
1065 if (!msg->rep)
1066 return -ENOMEM;
1067
1068 tipc_tlv_init(msg->rep, TIPC_TLV_ULTRA_STRING);
1069 tipc_tlv_sprintf(msg->rep, "TIPC version " TIPC_MOD_VER "\n");
1070
1071 return 0;
1072}
1073
1074static int tipc_nl_compat_handle(struct tipc_nl_compat_msg *msg)
1075{
1076 struct tipc_nl_compat_cmd_dump dump;
1077 struct tipc_nl_compat_cmd_doit doit;
1078
1079 memset(&dump, 0, sizeof(dump));
1080 memset(&doit, 0, sizeof(doit));
1081
1082 switch (msg->cmd) {
1083 case TIPC_CMD_NOOP:
1084 msg->rep = tipc_tlv_alloc(0);
1085 if (!msg->rep)
1086 return -ENOMEM;
1087 return 0;
1088 case TIPC_CMD_GET_BEARER_NAMES:
1089 msg->rep_size = MAX_BEARERS * TLV_SPACE(TIPC_MAX_BEARER_NAME);
1090 dump.dumpit = tipc_nl_bearer_dump;
1091 dump.format = tipc_nl_compat_bearer_dump;
1092 return tipc_nl_compat_dumpit(&dump, msg);
1093 case TIPC_CMD_ENABLE_BEARER:
1094 msg->req_type = TIPC_TLV_BEARER_CONFIG;
1095 doit.doit = __tipc_nl_bearer_enable;
1096 doit.transcode = tipc_nl_compat_bearer_enable;
1097 return tipc_nl_compat_doit(&doit, msg);
1098 case TIPC_CMD_DISABLE_BEARER:
1099 msg->req_type = TIPC_TLV_BEARER_NAME;
1100 doit.doit = __tipc_nl_bearer_disable;
1101 doit.transcode = tipc_nl_compat_bearer_disable;
1102 return tipc_nl_compat_doit(&doit, msg);
1103 case TIPC_CMD_SHOW_LINK_STATS:
1104 msg->req_type = TIPC_TLV_LINK_NAME;
1105 msg->rep_size = ULTRA_STRING_MAX_LEN;
1106 msg->rep_type = TIPC_TLV_ULTRA_STRING;
1107 dump.dumpit = tipc_nl_node_dump_link;
1108 dump.format = tipc_nl_compat_link_stat_dump;
1109 return tipc_nl_compat_dumpit(&dump, msg);
1110 case TIPC_CMD_GET_LINKS:
1111 msg->req_type = TIPC_TLV_NET_ADDR;
1112 msg->rep_size = ULTRA_STRING_MAX_LEN;
1113 dump.dumpit = tipc_nl_node_dump_link;
1114 dump.format = tipc_nl_compat_link_dump;
1115 return tipc_nl_compat_dumpit(&dump, msg);
1116 case TIPC_CMD_SET_LINK_TOL:
1117 case TIPC_CMD_SET_LINK_PRI:
1118 case TIPC_CMD_SET_LINK_WINDOW:
1119 msg->req_type = TIPC_TLV_LINK_CONFIG;
1120 doit.doit = tipc_nl_node_set_link;
1121 doit.transcode = tipc_nl_compat_link_set;
1122 return tipc_nl_compat_doit(&doit, msg);
1123 case TIPC_CMD_RESET_LINK_STATS:
1124 msg->req_type = TIPC_TLV_LINK_NAME;
1125 doit.doit = tipc_nl_node_reset_link_stats;
1126 doit.transcode = tipc_nl_compat_link_reset_stats;
1127 return tipc_nl_compat_doit(&doit, msg);
1128 case TIPC_CMD_SHOW_NAME_TABLE:
1129 msg->req_type = TIPC_TLV_NAME_TBL_QUERY;
1130 msg->rep_size = ULTRA_STRING_MAX_LEN;
1131 msg->rep_type = TIPC_TLV_ULTRA_STRING;
1132 dump.header = tipc_nl_compat_name_table_dump_header;
1133 dump.dumpit = tipc_nl_name_table_dump;
1134 dump.format = tipc_nl_compat_name_table_dump;
1135 return tipc_nl_compat_dumpit(&dump, msg);
1136 case TIPC_CMD_SHOW_PORTS:
1137 msg->rep_size = ULTRA_STRING_MAX_LEN;
1138 msg->rep_type = TIPC_TLV_ULTRA_STRING;
1139 dump.dumpit = tipc_nl_sk_dump;
1140 dump.format = tipc_nl_compat_sk_dump;
1141 return tipc_nl_compat_dumpit(&dump, msg);
1142 case TIPC_CMD_GET_MEDIA_NAMES:
1143 msg->rep_size = MAX_MEDIA * TLV_SPACE(TIPC_MAX_MEDIA_NAME);
1144 dump.dumpit = tipc_nl_media_dump;
1145 dump.format = tipc_nl_compat_media_dump;
1146 return tipc_nl_compat_dumpit(&dump, msg);
1147 case TIPC_CMD_GET_NODES:
1148 msg->rep_size = ULTRA_STRING_MAX_LEN;
1149 dump.dumpit = tipc_nl_node_dump;
1150 dump.format = tipc_nl_compat_node_dump;
1151 return tipc_nl_compat_dumpit(&dump, msg);
1152 case TIPC_CMD_SET_NODE_ADDR:
1153 msg->req_type = TIPC_TLV_NET_ADDR;
1154 doit.doit = __tipc_nl_net_set;
1155 doit.transcode = tipc_nl_compat_net_set;
1156 return tipc_nl_compat_doit(&doit, msg);
1157 case TIPC_CMD_SET_NETID:
1158 msg->req_type = TIPC_TLV_UNSIGNED;
1159 doit.doit = __tipc_nl_net_set;
1160 doit.transcode = tipc_nl_compat_net_set;
1161 return tipc_nl_compat_doit(&doit, msg);
1162 case TIPC_CMD_GET_NETID:
1163 msg->rep_size = sizeof(u32);
1164 dump.dumpit = tipc_nl_net_dump;
1165 dump.format = tipc_nl_compat_net_dump;
1166 return tipc_nl_compat_dumpit(&dump, msg);
1167 case TIPC_CMD_SHOW_STATS:
1168 return tipc_cmd_show_stats_compat(msg);
1169 }
1170
1171 return -EOPNOTSUPP;
1172}
1173
1174static int tipc_nl_compat_recv(struct sk_buff *skb, struct genl_info *info)
1175{
1176 int err;
1177 int len;
1178 struct tipc_nl_compat_msg msg;
1179 struct nlmsghdr *req_nlh;
1180 struct nlmsghdr *rep_nlh;
1181 struct tipc_genlmsghdr *req_userhdr = info->userhdr;
1182
1183 memset(&msg, 0, sizeof(msg));
1184
1185 req_nlh = (struct nlmsghdr *)skb->data;
1186 msg.req = nlmsg_data(req_nlh) + GENL_HDRLEN + TIPC_GENL_HDRLEN;
1187 msg.cmd = req_userhdr->cmd;
1188 msg.net = genl_info_net(info);
1189 msg.dst_sk = skb->sk;
1190
1191 if ((msg.cmd & 0xC000) && (!netlink_net_capable(skb, CAP_NET_ADMIN))) {
1192 msg.rep = tipc_get_err_tlv(TIPC_CFG_NOT_NET_ADMIN);
1193 err = -EACCES;
1194 goto send;
1195 }
1196
1197 len = nlmsg_attrlen(req_nlh, GENL_HDRLEN + TIPC_GENL_HDRLEN);
1198 if (len && !TLV_OK(msg.req, len)) {
1199 msg.rep = tipc_get_err_tlv(TIPC_CFG_NOT_SUPPORTED);
1200 err = -EOPNOTSUPP;
1201 goto send;
1202 }
1203
1204 err = tipc_nl_compat_handle(&msg);
1205 if ((err == -EOPNOTSUPP) || (err == -EPERM))
1206 msg.rep = tipc_get_err_tlv(TIPC_CFG_NOT_SUPPORTED);
1207 else if (err == -EINVAL)
1208 msg.rep = tipc_get_err_tlv(TIPC_CFG_TLV_ERROR);
1209send:
1210 if (!msg.rep)
1211 return err;
1212
1213 len = nlmsg_total_size(GENL_HDRLEN + TIPC_GENL_HDRLEN);
1214 skb_push(msg.rep, len);
1215 rep_nlh = nlmsg_hdr(msg.rep);
1216 memcpy(rep_nlh, info->nlhdr, len);
1217 rep_nlh->nlmsg_len = msg.rep->len;
1218 genlmsg_unicast(msg.net, msg.rep, NETLINK_CB(skb).portid);
1219
1220 return err;
1221}
1222
1223static const struct genl_ops tipc_genl_compat_ops[] = {
1224 {
1225 .cmd = TIPC_GENL_CMD,
1226 .doit = tipc_nl_compat_recv,
1227 },
1228};
1229
1230static struct genl_family tipc_genl_compat_family __ro_after_init = {
1231 .name = TIPC_GENL_NAME,
1232 .version = TIPC_GENL_VERSION,
1233 .hdrsize = TIPC_GENL_HDRLEN,
1234 .maxattr = 0,
1235 .netnsok = true,
1236 .module = THIS_MODULE,
1237 .ops = tipc_genl_compat_ops,
1238 .n_ops = ARRAY_SIZE(tipc_genl_compat_ops),
1239};
1240
1241int __init tipc_netlink_compat_start(void)
1242{
1243 int res;
1244
1245 res = genl_register_family(&tipc_genl_compat_family);
1246 if (res) {
1247 pr_err("Failed to register legacy compat interface\n");
1248 return res;
1249 }
1250
1251 return 0;
1252}
1253
1254void tipc_netlink_compat_stop(void)
1255{
1256 genl_unregister_family(&tipc_genl_compat_family);
1257}
1/*
2 * Copyright (c) 2014, Ericsson AB
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the names of the copyright holders nor the names of its
14 * contributors may be used to endorse or promote products derived from
15 * this software without specific prior written permission.
16 *
17 * Alternatively, this software may be distributed under the terms of the
18 * GNU General Public License ("GPL") version 2 as published by the Free
19 * Software Foundation.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
22 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
25 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
32 */
33
34#include "core.h"
35#include "bearer.h"
36#include "link.h"
37#include "name_table.h"
38#include "socket.h"
39#include "node.h"
40#include "net.h"
41#include <net/genetlink.h>
42#include <linux/tipc_config.h>
43
44/* The legacy API had an artificial message length limit called
45 * ULTRA_STRING_MAX_LEN.
46 */
47#define ULTRA_STRING_MAX_LEN 32768
48
49#define TIPC_SKB_MAX TLV_SPACE(ULTRA_STRING_MAX_LEN)
50
51#define REPLY_TRUNCATED "<truncated>\n"
52
53struct tipc_nl_compat_msg {
54 u16 cmd;
55 int rep_type;
56 int rep_size;
57 int req_type;
58 int req_size;
59 struct net *net;
60 struct sk_buff *rep;
61 struct tlv_desc *req;
62 struct sock *dst_sk;
63};
64
65struct tipc_nl_compat_cmd_dump {
66 int (*header)(struct tipc_nl_compat_msg *);
67 int (*dumpit)(struct sk_buff *, struct netlink_callback *);
68 int (*format)(struct tipc_nl_compat_msg *msg, struct nlattr **attrs);
69};
70
71struct tipc_nl_compat_cmd_doit {
72 int (*doit)(struct sk_buff *skb, struct genl_info *info);
73 int (*transcode)(struct tipc_nl_compat_cmd_doit *cmd,
74 struct sk_buff *skb, struct tipc_nl_compat_msg *msg);
75};
76
77static int tipc_skb_tailroom(struct sk_buff *skb)
78{
79 int tailroom;
80 int limit;
81
82 tailroom = skb_tailroom(skb);
83 limit = TIPC_SKB_MAX - skb->len;
84
85 if (tailroom < limit)
86 return tailroom;
87
88 return limit;
89}
90
91static inline int TLV_GET_DATA_LEN(struct tlv_desc *tlv)
92{
93 return TLV_GET_LEN(tlv) - TLV_SPACE(0);
94}
95
96static int tipc_add_tlv(struct sk_buff *skb, u16 type, void *data, u16 len)
97{
98 struct tlv_desc *tlv = (struct tlv_desc *)skb_tail_pointer(skb);
99
100 if (tipc_skb_tailroom(skb) < TLV_SPACE(len))
101 return -EMSGSIZE;
102
103 skb_put(skb, TLV_SPACE(len));
104 tlv->tlv_type = htons(type);
105 tlv->tlv_len = htons(TLV_LENGTH(len));
106 if (len && data)
107 memcpy(TLV_DATA(tlv), data, len);
108
109 return 0;
110}
111
112static void tipc_tlv_init(struct sk_buff *skb, u16 type)
113{
114 struct tlv_desc *tlv = (struct tlv_desc *)skb->data;
115
116 TLV_SET_LEN(tlv, 0);
117 TLV_SET_TYPE(tlv, type);
118 skb_put(skb, sizeof(struct tlv_desc));
119}
120
121static int tipc_tlv_sprintf(struct sk_buff *skb, const char *fmt, ...)
122{
123 int n;
124 u16 len;
125 u32 rem;
126 char *buf;
127 struct tlv_desc *tlv;
128 va_list args;
129
130 rem = tipc_skb_tailroom(skb);
131
132 tlv = (struct tlv_desc *)skb->data;
133 len = TLV_GET_LEN(tlv);
134 buf = TLV_DATA(tlv) + len;
135
136 va_start(args, fmt);
137 n = vscnprintf(buf, rem, fmt, args);
138 va_end(args);
139
140 TLV_SET_LEN(tlv, n + len);
141 skb_put(skb, n);
142
143 return n;
144}
145
146static struct sk_buff *tipc_tlv_alloc(int size)
147{
148 int hdr_len;
149 struct sk_buff *buf;
150
151 size = TLV_SPACE(size);
152 hdr_len = nlmsg_total_size(GENL_HDRLEN + TIPC_GENL_HDRLEN);
153
154 buf = alloc_skb(hdr_len + size, GFP_KERNEL);
155 if (!buf)
156 return NULL;
157
158 skb_reserve(buf, hdr_len);
159
160 return buf;
161}
162
163static struct sk_buff *tipc_get_err_tlv(char *str)
164{
165 int str_len = strlen(str) + 1;
166 struct sk_buff *buf;
167
168 buf = tipc_tlv_alloc(TLV_SPACE(str_len));
169 if (buf)
170 tipc_add_tlv(buf, TIPC_TLV_ERROR_STRING, str, str_len);
171
172 return buf;
173}
174
175static inline bool string_is_valid(char *s, int len)
176{
177 return memchr(s, '\0', len) ? true : false;
178}
179
180static int __tipc_nl_compat_dumpit(struct tipc_nl_compat_cmd_dump *cmd,
181 struct tipc_nl_compat_msg *msg,
182 struct sk_buff *arg)
183{
184 struct genl_dumpit_info info;
185 int len = 0;
186 int err;
187 struct sk_buff *buf;
188 struct nlmsghdr *nlmsg;
189 struct netlink_callback cb;
190 struct nlattr **attrbuf;
191
192 memset(&cb, 0, sizeof(cb));
193 cb.nlh = (struct nlmsghdr *)arg->data;
194 cb.skb = arg;
195 cb.data = &info;
196
197 buf = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
198 if (!buf)
199 return -ENOMEM;
200
201 buf->sk = msg->dst_sk;
202 if (__tipc_dump_start(&cb, msg->net)) {
203 kfree_skb(buf);
204 return -ENOMEM;
205 }
206
207 attrbuf = kcalloc(tipc_genl_family.maxattr + 1,
208 sizeof(struct nlattr *), GFP_KERNEL);
209 if (!attrbuf) {
210 err = -ENOMEM;
211 goto err_out;
212 }
213
214 info.attrs = attrbuf;
215 err = nlmsg_parse_deprecated(cb.nlh, GENL_HDRLEN, attrbuf,
216 tipc_genl_family.maxattr,
217 tipc_genl_family.policy, NULL);
218 if (err)
219 goto err_out;
220
221 do {
222 int rem;
223
224 len = (*cmd->dumpit)(buf, &cb);
225
226 nlmsg_for_each_msg(nlmsg, nlmsg_hdr(buf), len, rem) {
227 err = nlmsg_parse_deprecated(nlmsg, GENL_HDRLEN,
228 attrbuf,
229 tipc_genl_family.maxattr,
230 tipc_genl_family.policy,
231 NULL);
232 if (err)
233 goto err_out;
234
235 err = (*cmd->format)(msg, attrbuf);
236 if (err)
237 goto err_out;
238
239 if (tipc_skb_tailroom(msg->rep) <= 1) {
240 err = -EMSGSIZE;
241 goto err_out;
242 }
243 }
244
245 skb_reset_tail_pointer(buf);
246 buf->len = 0;
247
248 } while (len);
249
250 err = 0;
251
252err_out:
253 kfree(attrbuf);
254 tipc_dump_done(&cb);
255 kfree_skb(buf);
256
257 if (err == -EMSGSIZE) {
258 /* The legacy API only considered messages filling
259 * "ULTRA_STRING_MAX_LEN" to be truncated.
260 */
261 if ((TIPC_SKB_MAX - msg->rep->len) <= 1) {
262 char *tail = skb_tail_pointer(msg->rep);
263
264 if (*tail != '\0')
265 sprintf(tail - sizeof(REPLY_TRUNCATED) - 1,
266 REPLY_TRUNCATED);
267 }
268
269 return 0;
270 }
271
272 return err;
273}
274
275static int tipc_nl_compat_dumpit(struct tipc_nl_compat_cmd_dump *cmd,
276 struct tipc_nl_compat_msg *msg)
277{
278 struct nlmsghdr *nlh;
279 struct sk_buff *arg;
280 int err;
281
282 if (msg->req_type && (!msg->req_size ||
283 !TLV_CHECK_TYPE(msg->req, msg->req_type)))
284 return -EINVAL;
285
286 msg->rep = tipc_tlv_alloc(msg->rep_size);
287 if (!msg->rep)
288 return -ENOMEM;
289
290 if (msg->rep_type)
291 tipc_tlv_init(msg->rep, msg->rep_type);
292
293 if (cmd->header) {
294 err = (*cmd->header)(msg);
295 if (err) {
296 kfree_skb(msg->rep);
297 msg->rep = NULL;
298 return err;
299 }
300 }
301
302 arg = nlmsg_new(0, GFP_KERNEL);
303 if (!arg) {
304 kfree_skb(msg->rep);
305 msg->rep = NULL;
306 return -ENOMEM;
307 }
308
309 nlh = nlmsg_put(arg, 0, 0, tipc_genl_family.id, 0, NLM_F_MULTI);
310 if (!nlh) {
311 kfree_skb(arg);
312 kfree_skb(msg->rep);
313 msg->rep = NULL;
314 return -EMSGSIZE;
315 }
316 nlmsg_end(arg, nlh);
317
318 err = __tipc_nl_compat_dumpit(cmd, msg, arg);
319 if (err) {
320 kfree_skb(msg->rep);
321 msg->rep = NULL;
322 }
323 kfree_skb(arg);
324
325 return err;
326}
327
328static int __tipc_nl_compat_doit(struct tipc_nl_compat_cmd_doit *cmd,
329 struct tipc_nl_compat_msg *msg)
330{
331 int err;
332 struct sk_buff *doit_buf;
333 struct sk_buff *trans_buf;
334 struct nlattr **attrbuf;
335 struct genl_info info;
336
337 trans_buf = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
338 if (!trans_buf)
339 return -ENOMEM;
340
341 attrbuf = kmalloc_array(tipc_genl_family.maxattr + 1,
342 sizeof(struct nlattr *),
343 GFP_KERNEL);
344 if (!attrbuf) {
345 err = -ENOMEM;
346 goto trans_out;
347 }
348
349 doit_buf = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
350 if (!doit_buf) {
351 err = -ENOMEM;
352 goto attrbuf_out;
353 }
354
355 memset(&info, 0, sizeof(info));
356 info.attrs = attrbuf;
357
358 rtnl_lock();
359 err = (*cmd->transcode)(cmd, trans_buf, msg);
360 if (err)
361 goto doit_out;
362
363 err = nla_parse_deprecated(attrbuf, tipc_genl_family.maxattr,
364 (const struct nlattr *)trans_buf->data,
365 trans_buf->len, NULL, NULL);
366 if (err)
367 goto doit_out;
368
369 doit_buf->sk = msg->dst_sk;
370
371 err = (*cmd->doit)(doit_buf, &info);
372doit_out:
373 rtnl_unlock();
374
375 kfree_skb(doit_buf);
376attrbuf_out:
377 kfree(attrbuf);
378trans_out:
379 kfree_skb(trans_buf);
380
381 return err;
382}
383
384static int tipc_nl_compat_doit(struct tipc_nl_compat_cmd_doit *cmd,
385 struct tipc_nl_compat_msg *msg)
386{
387 int err;
388
389 if (msg->req_type && (!msg->req_size ||
390 !TLV_CHECK_TYPE(msg->req, msg->req_type)))
391 return -EINVAL;
392
393 err = __tipc_nl_compat_doit(cmd, msg);
394 if (err)
395 return err;
396
397 /* The legacy API considered an empty message a success message */
398 msg->rep = tipc_tlv_alloc(0);
399 if (!msg->rep)
400 return -ENOMEM;
401
402 return 0;
403}
404
405static int tipc_nl_compat_bearer_dump(struct tipc_nl_compat_msg *msg,
406 struct nlattr **attrs)
407{
408 struct nlattr *bearer[TIPC_NLA_BEARER_MAX + 1];
409 int err;
410
411 if (!attrs[TIPC_NLA_BEARER])
412 return -EINVAL;
413
414 err = nla_parse_nested_deprecated(bearer, TIPC_NLA_BEARER_MAX,
415 attrs[TIPC_NLA_BEARER], NULL, NULL);
416 if (err)
417 return err;
418
419 return tipc_add_tlv(msg->rep, TIPC_TLV_BEARER_NAME,
420 nla_data(bearer[TIPC_NLA_BEARER_NAME]),
421 nla_len(bearer[TIPC_NLA_BEARER_NAME]));
422}
423
424static int tipc_nl_compat_bearer_enable(struct tipc_nl_compat_cmd_doit *cmd,
425 struct sk_buff *skb,
426 struct tipc_nl_compat_msg *msg)
427{
428 struct nlattr *prop;
429 struct nlattr *bearer;
430 struct tipc_bearer_config *b;
431 int len;
432
433 b = (struct tipc_bearer_config *)TLV_DATA(msg->req);
434
435 bearer = nla_nest_start_noflag(skb, TIPC_NLA_BEARER);
436 if (!bearer)
437 return -EMSGSIZE;
438
439 len = TLV_GET_DATA_LEN(msg->req);
440 len -= offsetof(struct tipc_bearer_config, name);
441 if (len <= 0)
442 return -EINVAL;
443
444 len = min_t(int, len, TIPC_MAX_BEARER_NAME);
445 if (!string_is_valid(b->name, len))
446 return -EINVAL;
447
448 if (nla_put_string(skb, TIPC_NLA_BEARER_NAME, b->name))
449 return -EMSGSIZE;
450
451 if (nla_put_u32(skb, TIPC_NLA_BEARER_DOMAIN, ntohl(b->disc_domain)))
452 return -EMSGSIZE;
453
454 if (ntohl(b->priority) <= TIPC_MAX_LINK_PRI) {
455 prop = nla_nest_start_noflag(skb, TIPC_NLA_BEARER_PROP);
456 if (!prop)
457 return -EMSGSIZE;
458 if (nla_put_u32(skb, TIPC_NLA_PROP_PRIO, ntohl(b->priority)))
459 return -EMSGSIZE;
460 nla_nest_end(skb, prop);
461 }
462 nla_nest_end(skb, bearer);
463
464 return 0;
465}
466
467static int tipc_nl_compat_bearer_disable(struct tipc_nl_compat_cmd_doit *cmd,
468 struct sk_buff *skb,
469 struct tipc_nl_compat_msg *msg)
470{
471 char *name;
472 struct nlattr *bearer;
473 int len;
474
475 name = (char *)TLV_DATA(msg->req);
476
477 bearer = nla_nest_start_noflag(skb, TIPC_NLA_BEARER);
478 if (!bearer)
479 return -EMSGSIZE;
480
481 len = TLV_GET_DATA_LEN(msg->req);
482 if (len <= 0)
483 return -EINVAL;
484
485 len = min_t(int, len, TIPC_MAX_BEARER_NAME);
486 if (!string_is_valid(name, len))
487 return -EINVAL;
488
489 if (nla_put_string(skb, TIPC_NLA_BEARER_NAME, name))
490 return -EMSGSIZE;
491
492 nla_nest_end(skb, bearer);
493
494 return 0;
495}
496
497static inline u32 perc(u32 count, u32 total)
498{
499 return (count * 100 + (total / 2)) / total;
500}
501
502static void __fill_bc_link_stat(struct tipc_nl_compat_msg *msg,
503 struct nlattr *prop[], struct nlattr *stats[])
504{
505 tipc_tlv_sprintf(msg->rep, " Window:%u packets\n",
506 nla_get_u32(prop[TIPC_NLA_PROP_WIN]));
507
508 tipc_tlv_sprintf(msg->rep,
509 " RX packets:%u fragments:%u/%u bundles:%u/%u\n",
510 nla_get_u32(stats[TIPC_NLA_STATS_RX_INFO]),
511 nla_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTS]),
512 nla_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTED]),
513 nla_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLES]),
514 nla_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLED]));
515
516 tipc_tlv_sprintf(msg->rep,
517 " TX packets:%u fragments:%u/%u bundles:%u/%u\n",
518 nla_get_u32(stats[TIPC_NLA_STATS_TX_INFO]),
519 nla_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTS]),
520 nla_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTED]),
521 nla_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLES]),
522 nla_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLED]));
523
524 tipc_tlv_sprintf(msg->rep, " RX naks:%u defs:%u dups:%u\n",
525 nla_get_u32(stats[TIPC_NLA_STATS_RX_NACKS]),
526 nla_get_u32(stats[TIPC_NLA_STATS_RX_DEFERRED]),
527 nla_get_u32(stats[TIPC_NLA_STATS_DUPLICATES]));
528
529 tipc_tlv_sprintf(msg->rep, " TX naks:%u acks:%u dups:%u\n",
530 nla_get_u32(stats[TIPC_NLA_STATS_TX_NACKS]),
531 nla_get_u32(stats[TIPC_NLA_STATS_TX_ACKS]),
532 nla_get_u32(stats[TIPC_NLA_STATS_RETRANSMITTED]));
533
534 tipc_tlv_sprintf(msg->rep,
535 " Congestion link:%u Send queue max:%u avg:%u",
536 nla_get_u32(stats[TIPC_NLA_STATS_LINK_CONGS]),
537 nla_get_u32(stats[TIPC_NLA_STATS_MAX_QUEUE]),
538 nla_get_u32(stats[TIPC_NLA_STATS_AVG_QUEUE]));
539}
540
541static int tipc_nl_compat_link_stat_dump(struct tipc_nl_compat_msg *msg,
542 struct nlattr **attrs)
543{
544 char *name;
545 struct nlattr *link[TIPC_NLA_LINK_MAX + 1];
546 struct nlattr *prop[TIPC_NLA_PROP_MAX + 1];
547 struct nlattr *stats[TIPC_NLA_STATS_MAX + 1];
548 int err;
549 int len;
550
551 if (!attrs[TIPC_NLA_LINK])
552 return -EINVAL;
553
554 err = nla_parse_nested_deprecated(link, TIPC_NLA_LINK_MAX,
555 attrs[TIPC_NLA_LINK], NULL, NULL);
556 if (err)
557 return err;
558
559 if (!link[TIPC_NLA_LINK_PROP])
560 return -EINVAL;
561
562 err = nla_parse_nested_deprecated(prop, TIPC_NLA_PROP_MAX,
563 link[TIPC_NLA_LINK_PROP], NULL,
564 NULL);
565 if (err)
566 return err;
567
568 if (!link[TIPC_NLA_LINK_STATS])
569 return -EINVAL;
570
571 err = nla_parse_nested_deprecated(stats, TIPC_NLA_STATS_MAX,
572 link[TIPC_NLA_LINK_STATS], NULL,
573 NULL);
574 if (err)
575 return err;
576
577 name = (char *)TLV_DATA(msg->req);
578
579 len = TLV_GET_DATA_LEN(msg->req);
580 if (len <= 0)
581 return -EINVAL;
582
583 len = min_t(int, len, TIPC_MAX_LINK_NAME);
584 if (!string_is_valid(name, len))
585 return -EINVAL;
586
587 if (strcmp(name, nla_data(link[TIPC_NLA_LINK_NAME])) != 0)
588 return 0;
589
590 tipc_tlv_sprintf(msg->rep, "\nLink <%s>\n",
591 nla_data(link[TIPC_NLA_LINK_NAME]));
592
593 if (link[TIPC_NLA_LINK_BROADCAST]) {
594 __fill_bc_link_stat(msg, prop, stats);
595 return 0;
596 }
597
598 if (link[TIPC_NLA_LINK_ACTIVE])
599 tipc_tlv_sprintf(msg->rep, " ACTIVE");
600 else if (link[TIPC_NLA_LINK_UP])
601 tipc_tlv_sprintf(msg->rep, " STANDBY");
602 else
603 tipc_tlv_sprintf(msg->rep, " DEFUNCT");
604
605 tipc_tlv_sprintf(msg->rep, " MTU:%u Priority:%u",
606 nla_get_u32(link[TIPC_NLA_LINK_MTU]),
607 nla_get_u32(prop[TIPC_NLA_PROP_PRIO]));
608
609 tipc_tlv_sprintf(msg->rep, " Tolerance:%u ms Window:%u packets\n",
610 nla_get_u32(prop[TIPC_NLA_PROP_TOL]),
611 nla_get_u32(prop[TIPC_NLA_PROP_WIN]));
612
613 tipc_tlv_sprintf(msg->rep,
614 " RX packets:%u fragments:%u/%u bundles:%u/%u\n",
615 nla_get_u32(link[TIPC_NLA_LINK_RX]) -
616 nla_get_u32(stats[TIPC_NLA_STATS_RX_INFO]),
617 nla_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTS]),
618 nla_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTED]),
619 nla_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLES]),
620 nla_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLED]));
621
622 tipc_tlv_sprintf(msg->rep,
623 " TX packets:%u fragments:%u/%u bundles:%u/%u\n",
624 nla_get_u32(link[TIPC_NLA_LINK_TX]) -
625 nla_get_u32(stats[TIPC_NLA_STATS_TX_INFO]),
626 nla_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTS]),
627 nla_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTED]),
628 nla_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLES]),
629 nla_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLED]));
630
631 tipc_tlv_sprintf(msg->rep,
632 " TX profile sample:%u packets average:%u octets\n",
633 nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_CNT]),
634 nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_TOT]) /
635 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT]));
636
637 tipc_tlv_sprintf(msg->rep,
638 " 0-64:%u%% -256:%u%% -1024:%u%% -4096:%u%% ",
639 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P0]),
640 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])),
641 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P1]),
642 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])),
643 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P2]),
644 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])),
645 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P3]),
646 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])));
647
648 tipc_tlv_sprintf(msg->rep, "-16384:%u%% -32768:%u%% -66000:%u%%\n",
649 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P4]),
650 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])),
651 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P5]),
652 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])),
653 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P6]),
654 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])));
655
656 tipc_tlv_sprintf(msg->rep,
657 " RX states:%u probes:%u naks:%u defs:%u dups:%u\n",
658 nla_get_u32(stats[TIPC_NLA_STATS_RX_STATES]),
659 nla_get_u32(stats[TIPC_NLA_STATS_RX_PROBES]),
660 nla_get_u32(stats[TIPC_NLA_STATS_RX_NACKS]),
661 nla_get_u32(stats[TIPC_NLA_STATS_RX_DEFERRED]),
662 nla_get_u32(stats[TIPC_NLA_STATS_DUPLICATES]));
663
664 tipc_tlv_sprintf(msg->rep,
665 " TX states:%u probes:%u naks:%u acks:%u dups:%u\n",
666 nla_get_u32(stats[TIPC_NLA_STATS_TX_STATES]),
667 nla_get_u32(stats[TIPC_NLA_STATS_TX_PROBES]),
668 nla_get_u32(stats[TIPC_NLA_STATS_TX_NACKS]),
669 nla_get_u32(stats[TIPC_NLA_STATS_TX_ACKS]),
670 nla_get_u32(stats[TIPC_NLA_STATS_RETRANSMITTED]));
671
672 tipc_tlv_sprintf(msg->rep,
673 " Congestion link:%u Send queue max:%u avg:%u",
674 nla_get_u32(stats[TIPC_NLA_STATS_LINK_CONGS]),
675 nla_get_u32(stats[TIPC_NLA_STATS_MAX_QUEUE]),
676 nla_get_u32(stats[TIPC_NLA_STATS_AVG_QUEUE]));
677
678 return 0;
679}
680
681static int tipc_nl_compat_link_dump(struct tipc_nl_compat_msg *msg,
682 struct nlattr **attrs)
683{
684 struct nlattr *link[TIPC_NLA_LINK_MAX + 1];
685 struct tipc_link_info link_info;
686 int err;
687
688 if (!attrs[TIPC_NLA_LINK])
689 return -EINVAL;
690
691 err = nla_parse_nested_deprecated(link, TIPC_NLA_LINK_MAX,
692 attrs[TIPC_NLA_LINK], NULL, NULL);
693 if (err)
694 return err;
695
696 link_info.dest = nla_get_flag(link[TIPC_NLA_LINK_DEST]);
697 link_info.up = htonl(nla_get_flag(link[TIPC_NLA_LINK_UP]));
698 nla_strlcpy(link_info.str, link[TIPC_NLA_LINK_NAME],
699 TIPC_MAX_LINK_NAME);
700
701 return tipc_add_tlv(msg->rep, TIPC_TLV_LINK_INFO,
702 &link_info, sizeof(link_info));
703}
704
705static int __tipc_add_link_prop(struct sk_buff *skb,
706 struct tipc_nl_compat_msg *msg,
707 struct tipc_link_config *lc)
708{
709 switch (msg->cmd) {
710 case TIPC_CMD_SET_LINK_PRI:
711 return nla_put_u32(skb, TIPC_NLA_PROP_PRIO, ntohl(lc->value));
712 case TIPC_CMD_SET_LINK_TOL:
713 return nla_put_u32(skb, TIPC_NLA_PROP_TOL, ntohl(lc->value));
714 case TIPC_CMD_SET_LINK_WINDOW:
715 return nla_put_u32(skb, TIPC_NLA_PROP_WIN, ntohl(lc->value));
716 }
717
718 return -EINVAL;
719}
720
721static int tipc_nl_compat_media_set(struct sk_buff *skb,
722 struct tipc_nl_compat_msg *msg)
723{
724 struct nlattr *prop;
725 struct nlattr *media;
726 struct tipc_link_config *lc;
727
728 lc = (struct tipc_link_config *)TLV_DATA(msg->req);
729
730 media = nla_nest_start_noflag(skb, TIPC_NLA_MEDIA);
731 if (!media)
732 return -EMSGSIZE;
733
734 if (nla_put_string(skb, TIPC_NLA_MEDIA_NAME, lc->name))
735 return -EMSGSIZE;
736
737 prop = nla_nest_start_noflag(skb, TIPC_NLA_MEDIA_PROP);
738 if (!prop)
739 return -EMSGSIZE;
740
741 __tipc_add_link_prop(skb, msg, lc);
742 nla_nest_end(skb, prop);
743 nla_nest_end(skb, media);
744
745 return 0;
746}
747
748static int tipc_nl_compat_bearer_set(struct sk_buff *skb,
749 struct tipc_nl_compat_msg *msg)
750{
751 struct nlattr *prop;
752 struct nlattr *bearer;
753 struct tipc_link_config *lc;
754
755 lc = (struct tipc_link_config *)TLV_DATA(msg->req);
756
757 bearer = nla_nest_start_noflag(skb, TIPC_NLA_BEARER);
758 if (!bearer)
759 return -EMSGSIZE;
760
761 if (nla_put_string(skb, TIPC_NLA_BEARER_NAME, lc->name))
762 return -EMSGSIZE;
763
764 prop = nla_nest_start_noflag(skb, TIPC_NLA_BEARER_PROP);
765 if (!prop)
766 return -EMSGSIZE;
767
768 __tipc_add_link_prop(skb, msg, lc);
769 nla_nest_end(skb, prop);
770 nla_nest_end(skb, bearer);
771
772 return 0;
773}
774
775static int __tipc_nl_compat_link_set(struct sk_buff *skb,
776 struct tipc_nl_compat_msg *msg)
777{
778 struct nlattr *prop;
779 struct nlattr *link;
780 struct tipc_link_config *lc;
781
782 lc = (struct tipc_link_config *)TLV_DATA(msg->req);
783
784 link = nla_nest_start_noflag(skb, TIPC_NLA_LINK);
785 if (!link)
786 return -EMSGSIZE;
787
788 if (nla_put_string(skb, TIPC_NLA_LINK_NAME, lc->name))
789 return -EMSGSIZE;
790
791 prop = nla_nest_start_noflag(skb, TIPC_NLA_LINK_PROP);
792 if (!prop)
793 return -EMSGSIZE;
794
795 __tipc_add_link_prop(skb, msg, lc);
796 nla_nest_end(skb, prop);
797 nla_nest_end(skb, link);
798
799 return 0;
800}
801
802static int tipc_nl_compat_link_set(struct tipc_nl_compat_cmd_doit *cmd,
803 struct sk_buff *skb,
804 struct tipc_nl_compat_msg *msg)
805{
806 struct tipc_link_config *lc;
807 struct tipc_bearer *bearer;
808 struct tipc_media *media;
809 int len;
810
811 lc = (struct tipc_link_config *)TLV_DATA(msg->req);
812
813 len = TLV_GET_DATA_LEN(msg->req);
814 len -= offsetof(struct tipc_link_config, name);
815 if (len <= 0)
816 return -EINVAL;
817
818 len = min_t(int, len, TIPC_MAX_LINK_NAME);
819 if (!string_is_valid(lc->name, len))
820 return -EINVAL;
821
822 media = tipc_media_find(lc->name);
823 if (media) {
824 cmd->doit = &__tipc_nl_media_set;
825 return tipc_nl_compat_media_set(skb, msg);
826 }
827
828 bearer = tipc_bearer_find(msg->net, lc->name);
829 if (bearer) {
830 cmd->doit = &__tipc_nl_bearer_set;
831 return tipc_nl_compat_bearer_set(skb, msg);
832 }
833
834 return __tipc_nl_compat_link_set(skb, msg);
835}
836
837static int tipc_nl_compat_link_reset_stats(struct tipc_nl_compat_cmd_doit *cmd,
838 struct sk_buff *skb,
839 struct tipc_nl_compat_msg *msg)
840{
841 char *name;
842 struct nlattr *link;
843 int len;
844
845 name = (char *)TLV_DATA(msg->req);
846
847 link = nla_nest_start_noflag(skb, TIPC_NLA_LINK);
848 if (!link)
849 return -EMSGSIZE;
850
851 len = TLV_GET_DATA_LEN(msg->req);
852 if (len <= 0)
853 return -EINVAL;
854
855 len = min_t(int, len, TIPC_MAX_LINK_NAME);
856 if (!string_is_valid(name, len))
857 return -EINVAL;
858
859 if (nla_put_string(skb, TIPC_NLA_LINK_NAME, name))
860 return -EMSGSIZE;
861
862 nla_nest_end(skb, link);
863
864 return 0;
865}
866
867static int tipc_nl_compat_name_table_dump_header(struct tipc_nl_compat_msg *msg)
868{
869 int i;
870 u32 depth;
871 struct tipc_name_table_query *ntq;
872 static const char * const header[] = {
873 "Type ",
874 "Lower Upper ",
875 "Port Identity ",
876 "Publication Scope"
877 };
878
879 ntq = (struct tipc_name_table_query *)TLV_DATA(msg->req);
880 if (TLV_GET_DATA_LEN(msg->req) < sizeof(struct tipc_name_table_query))
881 return -EINVAL;
882
883 depth = ntohl(ntq->depth);
884
885 if (depth > 4)
886 depth = 4;
887 for (i = 0; i < depth; i++)
888 tipc_tlv_sprintf(msg->rep, header[i]);
889 tipc_tlv_sprintf(msg->rep, "\n");
890
891 return 0;
892}
893
894static int tipc_nl_compat_name_table_dump(struct tipc_nl_compat_msg *msg,
895 struct nlattr **attrs)
896{
897 char port_str[27];
898 struct tipc_name_table_query *ntq;
899 struct nlattr *nt[TIPC_NLA_NAME_TABLE_MAX + 1];
900 struct nlattr *publ[TIPC_NLA_PUBL_MAX + 1];
901 u32 node, depth, type, lowbound, upbound;
902 static const char * const scope_str[] = {"", " zone", " cluster",
903 " node"};
904 int err;
905
906 if (!attrs[TIPC_NLA_NAME_TABLE])
907 return -EINVAL;
908
909 err = nla_parse_nested_deprecated(nt, TIPC_NLA_NAME_TABLE_MAX,
910 attrs[TIPC_NLA_NAME_TABLE], NULL,
911 NULL);
912 if (err)
913 return err;
914
915 if (!nt[TIPC_NLA_NAME_TABLE_PUBL])
916 return -EINVAL;
917
918 err = nla_parse_nested_deprecated(publ, TIPC_NLA_PUBL_MAX,
919 nt[TIPC_NLA_NAME_TABLE_PUBL], NULL,
920 NULL);
921 if (err)
922 return err;
923
924 ntq = (struct tipc_name_table_query *)TLV_DATA(msg->req);
925
926 depth = ntohl(ntq->depth);
927 type = ntohl(ntq->type);
928 lowbound = ntohl(ntq->lowbound);
929 upbound = ntohl(ntq->upbound);
930
931 if (!(depth & TIPC_NTQ_ALLTYPES) &&
932 (type != nla_get_u32(publ[TIPC_NLA_PUBL_TYPE])))
933 return 0;
934 if (lowbound && (lowbound > nla_get_u32(publ[TIPC_NLA_PUBL_UPPER])))
935 return 0;
936 if (upbound && (upbound < nla_get_u32(publ[TIPC_NLA_PUBL_LOWER])))
937 return 0;
938
939 tipc_tlv_sprintf(msg->rep, "%-10u ",
940 nla_get_u32(publ[TIPC_NLA_PUBL_TYPE]));
941
942 if (depth == 1)
943 goto out;
944
945 tipc_tlv_sprintf(msg->rep, "%-10u %-10u ",
946 nla_get_u32(publ[TIPC_NLA_PUBL_LOWER]),
947 nla_get_u32(publ[TIPC_NLA_PUBL_UPPER]));
948
949 if (depth == 2)
950 goto out;
951
952 node = nla_get_u32(publ[TIPC_NLA_PUBL_NODE]);
953 sprintf(port_str, "<%u.%u.%u:%u>", tipc_zone(node), tipc_cluster(node),
954 tipc_node(node), nla_get_u32(publ[TIPC_NLA_PUBL_REF]));
955 tipc_tlv_sprintf(msg->rep, "%-26s ", port_str);
956
957 if (depth == 3)
958 goto out;
959
960 tipc_tlv_sprintf(msg->rep, "%-10u %s",
961 nla_get_u32(publ[TIPC_NLA_PUBL_KEY]),
962 scope_str[nla_get_u32(publ[TIPC_NLA_PUBL_SCOPE])]);
963out:
964 tipc_tlv_sprintf(msg->rep, "\n");
965
966 return 0;
967}
968
969static int __tipc_nl_compat_publ_dump(struct tipc_nl_compat_msg *msg,
970 struct nlattr **attrs)
971{
972 u32 type, lower, upper;
973 struct nlattr *publ[TIPC_NLA_PUBL_MAX + 1];
974 int err;
975
976 if (!attrs[TIPC_NLA_PUBL])
977 return -EINVAL;
978
979 err = nla_parse_nested_deprecated(publ, TIPC_NLA_PUBL_MAX,
980 attrs[TIPC_NLA_PUBL], NULL, NULL);
981 if (err)
982 return err;
983
984 type = nla_get_u32(publ[TIPC_NLA_PUBL_TYPE]);
985 lower = nla_get_u32(publ[TIPC_NLA_PUBL_LOWER]);
986 upper = nla_get_u32(publ[TIPC_NLA_PUBL_UPPER]);
987
988 if (lower == upper)
989 tipc_tlv_sprintf(msg->rep, " {%u,%u}", type, lower);
990 else
991 tipc_tlv_sprintf(msg->rep, " {%u,%u,%u}", type, lower, upper);
992
993 return 0;
994}
995
996static int tipc_nl_compat_publ_dump(struct tipc_nl_compat_msg *msg, u32 sock)
997{
998 int err;
999 void *hdr;
1000 struct nlattr *nest;
1001 struct sk_buff *args;
1002 struct tipc_nl_compat_cmd_dump dump;
1003
1004 args = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
1005 if (!args)
1006 return -ENOMEM;
1007
1008 hdr = genlmsg_put(args, 0, 0, &tipc_genl_family, NLM_F_MULTI,
1009 TIPC_NL_PUBL_GET);
1010 if (!hdr) {
1011 kfree_skb(args);
1012 return -EMSGSIZE;
1013 }
1014
1015 nest = nla_nest_start_noflag(args, TIPC_NLA_SOCK);
1016 if (!nest) {
1017 kfree_skb(args);
1018 return -EMSGSIZE;
1019 }
1020
1021 if (nla_put_u32(args, TIPC_NLA_SOCK_REF, sock)) {
1022 kfree_skb(args);
1023 return -EMSGSIZE;
1024 }
1025
1026 nla_nest_end(args, nest);
1027 genlmsg_end(args, hdr);
1028
1029 dump.dumpit = tipc_nl_publ_dump;
1030 dump.format = __tipc_nl_compat_publ_dump;
1031
1032 err = __tipc_nl_compat_dumpit(&dump, msg, args);
1033
1034 kfree_skb(args);
1035
1036 return err;
1037}
1038
1039static int tipc_nl_compat_sk_dump(struct tipc_nl_compat_msg *msg,
1040 struct nlattr **attrs)
1041{
1042 int err;
1043 u32 sock_ref;
1044 struct nlattr *sock[TIPC_NLA_SOCK_MAX + 1];
1045
1046 if (!attrs[TIPC_NLA_SOCK])
1047 return -EINVAL;
1048
1049 err = nla_parse_nested_deprecated(sock, TIPC_NLA_SOCK_MAX,
1050 attrs[TIPC_NLA_SOCK], NULL, NULL);
1051 if (err)
1052 return err;
1053
1054 sock_ref = nla_get_u32(sock[TIPC_NLA_SOCK_REF]);
1055 tipc_tlv_sprintf(msg->rep, "%u:", sock_ref);
1056
1057 if (sock[TIPC_NLA_SOCK_CON]) {
1058 u32 node;
1059 struct nlattr *con[TIPC_NLA_CON_MAX + 1];
1060
1061 err = nla_parse_nested_deprecated(con, TIPC_NLA_CON_MAX,
1062 sock[TIPC_NLA_SOCK_CON],
1063 NULL, NULL);
1064
1065 if (err)
1066 return err;
1067
1068 node = nla_get_u32(con[TIPC_NLA_CON_NODE]);
1069 tipc_tlv_sprintf(msg->rep, " connected to <%u.%u.%u:%u>",
1070 tipc_zone(node),
1071 tipc_cluster(node),
1072 tipc_node(node),
1073 nla_get_u32(con[TIPC_NLA_CON_SOCK]));
1074
1075 if (con[TIPC_NLA_CON_FLAG])
1076 tipc_tlv_sprintf(msg->rep, " via {%u,%u}\n",
1077 nla_get_u32(con[TIPC_NLA_CON_TYPE]),
1078 nla_get_u32(con[TIPC_NLA_CON_INST]));
1079 else
1080 tipc_tlv_sprintf(msg->rep, "\n");
1081 } else if (sock[TIPC_NLA_SOCK_HAS_PUBL]) {
1082 tipc_tlv_sprintf(msg->rep, " bound to");
1083
1084 err = tipc_nl_compat_publ_dump(msg, sock_ref);
1085 if (err)
1086 return err;
1087 }
1088 tipc_tlv_sprintf(msg->rep, "\n");
1089
1090 return 0;
1091}
1092
1093static int tipc_nl_compat_media_dump(struct tipc_nl_compat_msg *msg,
1094 struct nlattr **attrs)
1095{
1096 struct nlattr *media[TIPC_NLA_MEDIA_MAX + 1];
1097 int err;
1098
1099 if (!attrs[TIPC_NLA_MEDIA])
1100 return -EINVAL;
1101
1102 err = nla_parse_nested_deprecated(media, TIPC_NLA_MEDIA_MAX,
1103 attrs[TIPC_NLA_MEDIA], NULL, NULL);
1104 if (err)
1105 return err;
1106
1107 return tipc_add_tlv(msg->rep, TIPC_TLV_MEDIA_NAME,
1108 nla_data(media[TIPC_NLA_MEDIA_NAME]),
1109 nla_len(media[TIPC_NLA_MEDIA_NAME]));
1110}
1111
1112static int tipc_nl_compat_node_dump(struct tipc_nl_compat_msg *msg,
1113 struct nlattr **attrs)
1114{
1115 struct tipc_node_info node_info;
1116 struct nlattr *node[TIPC_NLA_NODE_MAX + 1];
1117 int err;
1118
1119 if (!attrs[TIPC_NLA_NODE])
1120 return -EINVAL;
1121
1122 err = nla_parse_nested_deprecated(node, TIPC_NLA_NODE_MAX,
1123 attrs[TIPC_NLA_NODE], NULL, NULL);
1124 if (err)
1125 return err;
1126
1127 node_info.addr = htonl(nla_get_u32(node[TIPC_NLA_NODE_ADDR]));
1128 node_info.up = htonl(nla_get_flag(node[TIPC_NLA_NODE_UP]));
1129
1130 return tipc_add_tlv(msg->rep, TIPC_TLV_NODE_INFO, &node_info,
1131 sizeof(node_info));
1132}
1133
1134static int tipc_nl_compat_net_set(struct tipc_nl_compat_cmd_doit *cmd,
1135 struct sk_buff *skb,
1136 struct tipc_nl_compat_msg *msg)
1137{
1138 u32 val;
1139 struct nlattr *net;
1140
1141 val = ntohl(*(__be32 *)TLV_DATA(msg->req));
1142
1143 net = nla_nest_start_noflag(skb, TIPC_NLA_NET);
1144 if (!net)
1145 return -EMSGSIZE;
1146
1147 if (msg->cmd == TIPC_CMD_SET_NODE_ADDR) {
1148 if (nla_put_u32(skb, TIPC_NLA_NET_ADDR, val))
1149 return -EMSGSIZE;
1150 } else if (msg->cmd == TIPC_CMD_SET_NETID) {
1151 if (nla_put_u32(skb, TIPC_NLA_NET_ID, val))
1152 return -EMSGSIZE;
1153 }
1154 nla_nest_end(skb, net);
1155
1156 return 0;
1157}
1158
1159static int tipc_nl_compat_net_dump(struct tipc_nl_compat_msg *msg,
1160 struct nlattr **attrs)
1161{
1162 __be32 id;
1163 struct nlattr *net[TIPC_NLA_NET_MAX + 1];
1164 int err;
1165
1166 if (!attrs[TIPC_NLA_NET])
1167 return -EINVAL;
1168
1169 err = nla_parse_nested_deprecated(net, TIPC_NLA_NET_MAX,
1170 attrs[TIPC_NLA_NET], NULL, NULL);
1171 if (err)
1172 return err;
1173
1174 id = htonl(nla_get_u32(net[TIPC_NLA_NET_ID]));
1175
1176 return tipc_add_tlv(msg->rep, TIPC_TLV_UNSIGNED, &id, sizeof(id));
1177}
1178
1179static int tipc_cmd_show_stats_compat(struct tipc_nl_compat_msg *msg)
1180{
1181 msg->rep = tipc_tlv_alloc(ULTRA_STRING_MAX_LEN);
1182 if (!msg->rep)
1183 return -ENOMEM;
1184
1185 tipc_tlv_init(msg->rep, TIPC_TLV_ULTRA_STRING);
1186 tipc_tlv_sprintf(msg->rep, "TIPC version " TIPC_MOD_VER "\n");
1187
1188 return 0;
1189}
1190
1191static int tipc_nl_compat_handle(struct tipc_nl_compat_msg *msg)
1192{
1193 struct tipc_nl_compat_cmd_dump dump;
1194 struct tipc_nl_compat_cmd_doit doit;
1195
1196 memset(&dump, 0, sizeof(dump));
1197 memset(&doit, 0, sizeof(doit));
1198
1199 switch (msg->cmd) {
1200 case TIPC_CMD_NOOP:
1201 msg->rep = tipc_tlv_alloc(0);
1202 if (!msg->rep)
1203 return -ENOMEM;
1204 return 0;
1205 case TIPC_CMD_GET_BEARER_NAMES:
1206 msg->rep_size = MAX_BEARERS * TLV_SPACE(TIPC_MAX_BEARER_NAME);
1207 dump.dumpit = tipc_nl_bearer_dump;
1208 dump.format = tipc_nl_compat_bearer_dump;
1209 return tipc_nl_compat_dumpit(&dump, msg);
1210 case TIPC_CMD_ENABLE_BEARER:
1211 msg->req_type = TIPC_TLV_BEARER_CONFIG;
1212 doit.doit = __tipc_nl_bearer_enable;
1213 doit.transcode = tipc_nl_compat_bearer_enable;
1214 return tipc_nl_compat_doit(&doit, msg);
1215 case TIPC_CMD_DISABLE_BEARER:
1216 msg->req_type = TIPC_TLV_BEARER_NAME;
1217 doit.doit = __tipc_nl_bearer_disable;
1218 doit.transcode = tipc_nl_compat_bearer_disable;
1219 return tipc_nl_compat_doit(&doit, msg);
1220 case TIPC_CMD_SHOW_LINK_STATS:
1221 msg->req_type = TIPC_TLV_LINK_NAME;
1222 msg->rep_size = ULTRA_STRING_MAX_LEN;
1223 msg->rep_type = TIPC_TLV_ULTRA_STRING;
1224 dump.dumpit = tipc_nl_node_dump_link;
1225 dump.format = tipc_nl_compat_link_stat_dump;
1226 return tipc_nl_compat_dumpit(&dump, msg);
1227 case TIPC_CMD_GET_LINKS:
1228 msg->req_type = TIPC_TLV_NET_ADDR;
1229 msg->rep_size = ULTRA_STRING_MAX_LEN;
1230 dump.dumpit = tipc_nl_node_dump_link;
1231 dump.format = tipc_nl_compat_link_dump;
1232 return tipc_nl_compat_dumpit(&dump, msg);
1233 case TIPC_CMD_SET_LINK_TOL:
1234 case TIPC_CMD_SET_LINK_PRI:
1235 case TIPC_CMD_SET_LINK_WINDOW:
1236 msg->req_type = TIPC_TLV_LINK_CONFIG;
1237 doit.doit = tipc_nl_node_set_link;
1238 doit.transcode = tipc_nl_compat_link_set;
1239 return tipc_nl_compat_doit(&doit, msg);
1240 case TIPC_CMD_RESET_LINK_STATS:
1241 msg->req_type = TIPC_TLV_LINK_NAME;
1242 doit.doit = tipc_nl_node_reset_link_stats;
1243 doit.transcode = tipc_nl_compat_link_reset_stats;
1244 return tipc_nl_compat_doit(&doit, msg);
1245 case TIPC_CMD_SHOW_NAME_TABLE:
1246 msg->req_type = TIPC_TLV_NAME_TBL_QUERY;
1247 msg->rep_size = ULTRA_STRING_MAX_LEN;
1248 msg->rep_type = TIPC_TLV_ULTRA_STRING;
1249 dump.header = tipc_nl_compat_name_table_dump_header;
1250 dump.dumpit = tipc_nl_name_table_dump;
1251 dump.format = tipc_nl_compat_name_table_dump;
1252 return tipc_nl_compat_dumpit(&dump, msg);
1253 case TIPC_CMD_SHOW_PORTS:
1254 msg->rep_size = ULTRA_STRING_MAX_LEN;
1255 msg->rep_type = TIPC_TLV_ULTRA_STRING;
1256 dump.dumpit = tipc_nl_sk_dump;
1257 dump.format = tipc_nl_compat_sk_dump;
1258 return tipc_nl_compat_dumpit(&dump, msg);
1259 case TIPC_CMD_GET_MEDIA_NAMES:
1260 msg->rep_size = MAX_MEDIA * TLV_SPACE(TIPC_MAX_MEDIA_NAME);
1261 dump.dumpit = tipc_nl_media_dump;
1262 dump.format = tipc_nl_compat_media_dump;
1263 return tipc_nl_compat_dumpit(&dump, msg);
1264 case TIPC_CMD_GET_NODES:
1265 msg->rep_size = ULTRA_STRING_MAX_LEN;
1266 dump.dumpit = tipc_nl_node_dump;
1267 dump.format = tipc_nl_compat_node_dump;
1268 return tipc_nl_compat_dumpit(&dump, msg);
1269 case TIPC_CMD_SET_NODE_ADDR:
1270 msg->req_type = TIPC_TLV_NET_ADDR;
1271 doit.doit = __tipc_nl_net_set;
1272 doit.transcode = tipc_nl_compat_net_set;
1273 return tipc_nl_compat_doit(&doit, msg);
1274 case TIPC_CMD_SET_NETID:
1275 msg->req_type = TIPC_TLV_UNSIGNED;
1276 doit.doit = __tipc_nl_net_set;
1277 doit.transcode = tipc_nl_compat_net_set;
1278 return tipc_nl_compat_doit(&doit, msg);
1279 case TIPC_CMD_GET_NETID:
1280 msg->rep_size = sizeof(u32);
1281 dump.dumpit = tipc_nl_net_dump;
1282 dump.format = tipc_nl_compat_net_dump;
1283 return tipc_nl_compat_dumpit(&dump, msg);
1284 case TIPC_CMD_SHOW_STATS:
1285 return tipc_cmd_show_stats_compat(msg);
1286 }
1287
1288 return -EOPNOTSUPP;
1289}
1290
1291static int tipc_nl_compat_recv(struct sk_buff *skb, struct genl_info *info)
1292{
1293 int err;
1294 int len;
1295 struct tipc_nl_compat_msg msg;
1296 struct nlmsghdr *req_nlh;
1297 struct nlmsghdr *rep_nlh;
1298 struct tipc_genlmsghdr *req_userhdr = info->userhdr;
1299
1300 memset(&msg, 0, sizeof(msg));
1301
1302 req_nlh = (struct nlmsghdr *)skb->data;
1303 msg.req = nlmsg_data(req_nlh) + GENL_HDRLEN + TIPC_GENL_HDRLEN;
1304 msg.cmd = req_userhdr->cmd;
1305 msg.net = genl_info_net(info);
1306 msg.dst_sk = skb->sk;
1307
1308 if ((msg.cmd & 0xC000) && (!netlink_net_capable(skb, CAP_NET_ADMIN))) {
1309 msg.rep = tipc_get_err_tlv(TIPC_CFG_NOT_NET_ADMIN);
1310 err = -EACCES;
1311 goto send;
1312 }
1313
1314 msg.req_size = nlmsg_attrlen(req_nlh, GENL_HDRLEN + TIPC_GENL_HDRLEN);
1315 if (msg.req_size && !TLV_OK(msg.req, msg.req_size)) {
1316 msg.rep = tipc_get_err_tlv(TIPC_CFG_NOT_SUPPORTED);
1317 err = -EOPNOTSUPP;
1318 goto send;
1319 }
1320
1321 err = tipc_nl_compat_handle(&msg);
1322 if ((err == -EOPNOTSUPP) || (err == -EPERM))
1323 msg.rep = tipc_get_err_tlv(TIPC_CFG_NOT_SUPPORTED);
1324 else if (err == -EINVAL)
1325 msg.rep = tipc_get_err_tlv(TIPC_CFG_TLV_ERROR);
1326send:
1327 if (!msg.rep)
1328 return err;
1329
1330 len = nlmsg_total_size(GENL_HDRLEN + TIPC_GENL_HDRLEN);
1331 skb_push(msg.rep, len);
1332 rep_nlh = nlmsg_hdr(msg.rep);
1333 memcpy(rep_nlh, info->nlhdr, len);
1334 rep_nlh->nlmsg_len = msg.rep->len;
1335 genlmsg_unicast(msg.net, msg.rep, NETLINK_CB(skb).portid);
1336
1337 return err;
1338}
1339
1340static const struct genl_ops tipc_genl_compat_ops[] = {
1341 {
1342 .cmd = TIPC_GENL_CMD,
1343 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1344 .doit = tipc_nl_compat_recv,
1345 },
1346};
1347
1348static struct genl_family tipc_genl_compat_family __ro_after_init = {
1349 .name = TIPC_GENL_NAME,
1350 .version = TIPC_GENL_VERSION,
1351 .hdrsize = TIPC_GENL_HDRLEN,
1352 .maxattr = 0,
1353 .netnsok = true,
1354 .module = THIS_MODULE,
1355 .ops = tipc_genl_compat_ops,
1356 .n_ops = ARRAY_SIZE(tipc_genl_compat_ops),
1357};
1358
1359int __init tipc_netlink_compat_start(void)
1360{
1361 int res;
1362
1363 res = genl_register_family(&tipc_genl_compat_family);
1364 if (res) {
1365 pr_err("Failed to register legacy compat interface\n");
1366 return res;
1367 }
1368
1369 return 0;
1370}
1371
1372void tipc_netlink_compat_stop(void)
1373{
1374 genl_unregister_family(&tipc_genl_compat_family);
1375}