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