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bfb3e5dd
RA		 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"
d0796d1e 35#include "bearer.h"
f2b3b2d4 36#include "link.h"
44a8ae94 37#include "name_table.h"
487d2a3a 38#include "socket.h"
4b28cb58 39#include "node.h"
964f9501 40#include "net.h"
bfb3e5dd
RA		 41#include <net/genetlink.h>
42#include <linux/tipc_config.h>
43
d0796d1e
RA		 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;
f2b3b2d4 55 int rep_type;
d0796d1e 56 int rep_size;
9ab15465 57 int req_type;
c3d6fb85 58 struct net *net;
d0796d1e
RA		 59 struct sk_buff *rep;
60 struct tlv_desc *req;
61 struct sock *dst_sk;
62};
63
64struct tipc_nl_compat_cmd_dump {
44a8ae94 65 int (*header)(struct tipc_nl_compat_msg *);
d0796d1e
RA		 66 int (*dumpit)(struct sk_buff *, struct netlink_callback *);
67 int (*format)(struct tipc_nl_compat_msg *msg, struct nlattr **attrs);
68};
69
9ab15465
RA		 70struct tipc_nl_compat_cmd_doit {
71 int (*doit)(struct sk_buff *skb, struct genl_info *info);
c3d6fb85
RA		 72 int (*transcode)(struct tipc_nl_compat_cmd_doit *cmd,
73 struct sk_buff *skb, struct tipc_nl_compat_msg *msg);
9ab15465
RA		 74};
75
d0796d1e
RA		 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
f2b3b2d4
RA		 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
d0796d1e
RA		 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
f2b3b2d4
RA		 245 if (msg->req_type && !TLV_CHECK_TYPE(msg->req, msg->req_type))
246 return -EINVAL;
247
d0796d1e
RA		 248 msg->rep = tipc_tlv_alloc(msg->rep_size);
249 if (!msg->rep)
250 return -ENOMEM;
251
f2b3b2d4
RA		 252 if (msg->rep_type)
253 tipc_tlv_init(msg->rep, msg->rep_type);
254
44a8ae94
RA		 255 if (cmd->header)
256 (*cmd->header)(msg);
257
d0796d1e
RA		 258 arg = nlmsg_new(0, GFP_KERNEL);
259 if (!arg) {
260 kfree_skb(msg->rep);
5bfd37b4 261 msg->rep = NULL;
d0796d1e
RA		 262 return -ENOMEM;
263 }
264
265 err = __tipc_nl_compat_dumpit(cmd, msg, arg);
5bfd37b4 266 if (err) {
d0796d1e 267 kfree_skb(msg->rep);
5bfd37b4
ED		 268 msg->rep = NULL;
269 }
d0796d1e
RA		 270 kfree_skb(arg);
271
272 return err;
273}
274
9ab15465
RA		 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
6da2ec56
KC		 288 attrbuf = kmalloc_array(tipc_genl_family.maxattr + 1,
289 sizeof(struct nlattr *),
290 GFP_KERNEL);
9ab15465
RA		 291 if (!attrbuf) {
292 err = -ENOMEM;
293 goto trans_out;
294 }
295
9ab15465
RA		 296 doit_buf = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
297 if (!doit_buf) {
298 err = -ENOMEM;
e5d1a1ee 299 goto attrbuf_out;
9ab15465
RA		 300 }
301
9ab15465
RA		 302 memset(&info, 0, sizeof(info));
303 info.attrs = attrbuf;
304
ed4ffdfe 305 rtnl_lock();
e5d1a1ee
YX		 306 err = (*cmd->transcode)(cmd, trans_buf, msg);
307 if (err)
308 goto doit_out;
309
310 err = nla_parse(attrbuf, tipc_genl_family.maxattr,
311 (const struct nlattr *)trans_buf->data,
312 trans_buf->len, NULL, NULL);
313 if (err)
314 goto doit_out;
315
316 doit_buf->sk = msg->dst_sk;
317
9ab15465 318 err = (*cmd->doit)(doit_buf, &info);
e5d1a1ee 319doit_out:
ed4ffdfe 320 rtnl_unlock();
9ab15465
RA		 321
322 kfree_skb(doit_buf);
e5d1a1ee 323attrbuf_out:
9ab15465
RA		 324 kfree(attrbuf);
325trans_out:
326 kfree_skb(trans_buf);
327
328 return err;
329}
330
331static int tipc_nl_compat_doit(struct tipc_nl_compat_cmd_doit *cmd,
332 struct tipc_nl_compat_msg *msg)
333{
334 int err;
335
336 if (msg->req_type && !TLV_CHECK_TYPE(msg->req, msg->req_type))
337 return -EINVAL;
338
339 err = __tipc_nl_compat_doit(cmd, msg);
340 if (err)
341 return err;
342
343 /* The legacy API considered an empty message a success message */
344 msg->rep = tipc_tlv_alloc(0);
345 if (!msg->rep)
346 return -ENOMEM;
347
348 return 0;
349}
350
d0796d1e
RA		 351static int tipc_nl_compat_bearer_dump(struct tipc_nl_compat_msg *msg,
352 struct nlattr **attrs)
353{
354 struct nlattr *bearer[TIPC_NLA_BEARER_MAX + 1];
297f7d2c
BD		 355 int err;
356
357 if (!attrs[TIPC_NLA_BEARER])
358 return -EINVAL;
d0796d1e 359
297f7d2c 360 err = nla_parse_nested(bearer, TIPC_NLA_BEARER_MAX,
fceb6435 361 attrs[TIPC_NLA_BEARER], NULL, NULL);
297f7d2c
BD		 362 if (err)
363 return err;
d0796d1e
RA		 364
365 return tipc_add_tlv(msg->rep, TIPC_TLV_BEARER_NAME,
366 nla_data(bearer[TIPC_NLA_BEARER_NAME]),
367 nla_len(bearer[TIPC_NLA_BEARER_NAME]));
368}
369
c3d6fb85
RA		 370static int tipc_nl_compat_bearer_enable(struct tipc_nl_compat_cmd_doit *cmd,
371 struct sk_buff *skb,
9ab15465
RA		 372 struct tipc_nl_compat_msg *msg)
373{
374 struct nlattr *prop;
375 struct nlattr *bearer;
376 struct tipc_bearer_config *b;
377
378 b = (struct tipc_bearer_config *)TLV_DATA(msg->req);
379
380 bearer = nla_nest_start(skb, TIPC_NLA_BEARER);
381 if (!bearer)
382 return -EMSGSIZE;
383
384 if (nla_put_string(skb, TIPC_NLA_BEARER_NAME, b->name))
385 return -EMSGSIZE;
386
387 if (nla_put_u32(skb, TIPC_NLA_BEARER_DOMAIN, ntohl(b->disc_domain)))
388 return -EMSGSIZE;
389
390 if (ntohl(b->priority) <= TIPC_MAX_LINK_PRI) {
391 prop = nla_nest_start(skb, TIPC_NLA_BEARER_PROP);
392 if (!prop)
393 return -EMSGSIZE;
394 if (nla_put_u32(skb, TIPC_NLA_PROP_PRIO, ntohl(b->priority)))
395 return -EMSGSIZE;
396 nla_nest_end(skb, prop);
397 }
398 nla_nest_end(skb, bearer);
399
400 return 0;
401}
402
c3d6fb85
RA		 403static int tipc_nl_compat_bearer_disable(struct tipc_nl_compat_cmd_doit *cmd,
404 struct sk_buff *skb,
9ab15465
RA		 405 struct tipc_nl_compat_msg *msg)
406{
407 char *name;
408 struct nlattr *bearer;
409
410 name = (char *)TLV_DATA(msg->req);
411
412 bearer = nla_nest_start(skb, TIPC_NLA_BEARER);
413 if (!bearer)
414 return -EMSGSIZE;
415
416 if (nla_put_string(skb, TIPC_NLA_BEARER_NAME, name))
417 return -EMSGSIZE;
418
419 nla_nest_end(skb, bearer);
420
421 return 0;
422}
423
f2b3b2d4
RA		 424static inline u32 perc(u32 count, u32 total)
425{
426 return (count * 100 + (total / 2)) / total;
427}
428
429static void __fill_bc_link_stat(struct tipc_nl_compat_msg *msg,
430 struct nlattr *prop[], struct nlattr *stats[])
431{
432 tipc_tlv_sprintf(msg->rep, " Window:%u packets\n",
433 nla_get_u32(prop[TIPC_NLA_PROP_WIN]));
434
435 tipc_tlv_sprintf(msg->rep,
436 " RX packets:%u fragments:%u/%u bundles:%u/%u\n",
437 nla_get_u32(stats[TIPC_NLA_STATS_RX_INFO]),
438 nla_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTS]),
439 nla_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTED]),
440 nla_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLES]),
441 nla_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLED]));
442
443 tipc_tlv_sprintf(msg->rep,
444 " TX packets:%u fragments:%u/%u bundles:%u/%u\n",
445 nla_get_u32(stats[TIPC_NLA_STATS_TX_INFO]),
446 nla_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTS]),
447 nla_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTED]),
448 nla_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLES]),
449 nla_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLED]));
450
451 tipc_tlv_sprintf(msg->rep, " RX naks:%u defs:%u dups:%u\n",
452 nla_get_u32(stats[TIPC_NLA_STATS_RX_NACKS]),
453 nla_get_u32(stats[TIPC_NLA_STATS_RX_DEFERRED]),
454 nla_get_u32(stats[TIPC_NLA_STATS_DUPLICATES]));
455
456 tipc_tlv_sprintf(msg->rep, " TX naks:%u acks:%u dups:%u\n",
457 nla_get_u32(stats[TIPC_NLA_STATS_TX_NACKS]),
458 nla_get_u32(stats[TIPC_NLA_STATS_TX_ACKS]),
459 nla_get_u32(stats[TIPC_NLA_STATS_RETRANSMITTED]));
460
461 tipc_tlv_sprintf(msg->rep,
462 " Congestion link:%u Send queue max:%u avg:%u",
463 nla_get_u32(stats[TIPC_NLA_STATS_LINK_CONGS]),
464 nla_get_u32(stats[TIPC_NLA_STATS_MAX_QUEUE]),
465 nla_get_u32(stats[TIPC_NLA_STATS_AVG_QUEUE]));
466}
467
468static int tipc_nl_compat_link_stat_dump(struct tipc_nl_compat_msg *msg,
469 struct nlattr **attrs)
470{
471 char *name;
472 struct nlattr *link[TIPC_NLA_LINK_MAX + 1];
473 struct nlattr *prop[TIPC_NLA_PROP_MAX + 1];
474 struct nlattr *stats[TIPC_NLA_STATS_MAX + 1];
297f7d2c 475 int err;
f2b3b2d4 476
297f7d2c
BD		 477 if (!attrs[TIPC_NLA_LINK])
478 return -EINVAL;
f2b3b2d4 479
297f7d2c 480 err = nla_parse_nested(link, TIPC_NLA_LINK_MAX, attrs[TIPC_NLA_LINK],
fceb6435 481 NULL, NULL);
297f7d2c
BD		 482 if (err)
483 return err;
484
485 if (!link[TIPC_NLA_LINK_PROP])
486 return -EINVAL;
f2b3b2d4 487
297f7d2c 488 err = nla_parse_nested(prop, TIPC_NLA_PROP_MAX,
fceb6435 489 link[TIPC_NLA_LINK_PROP], NULL, NULL);
297f7d2c
BD		 490 if (err)
491 return err;
492
493 if (!link[TIPC_NLA_LINK_STATS])
494 return -EINVAL;
495
496 err = nla_parse_nested(stats, TIPC_NLA_STATS_MAX,
fceb6435 497 link[TIPC_NLA_LINK_STATS], NULL, NULL);
297f7d2c
BD		 498 if (err)
499 return err;
f2b3b2d4
RA		 500
501 name = (char *)TLV_DATA(msg->req);
502 if (strcmp(name, nla_data(link[TIPC_NLA_LINK_NAME])) != 0)
503 return 0;
504
505 tipc_tlv_sprintf(msg->rep, "\nLink <%s>\n",
506 nla_data(link[TIPC_NLA_LINK_NAME]));
507
508 if (link[TIPC_NLA_LINK_BROADCAST]) {
509 __fill_bc_link_stat(msg, prop, stats);
510 return 0;
511 }
512
513 if (link[TIPC_NLA_LINK_ACTIVE])
514 tipc_tlv_sprintf(msg->rep, " ACTIVE");
515 else if (link[TIPC_NLA_LINK_UP])
516 tipc_tlv_sprintf(msg->rep, " STANDBY");
517 else
518 tipc_tlv_sprintf(msg->rep, " DEFUNCT");
519
520 tipc_tlv_sprintf(msg->rep, " MTU:%u Priority:%u",
521 nla_get_u32(link[TIPC_NLA_LINK_MTU]),
522 nla_get_u32(prop[TIPC_NLA_PROP_PRIO]));
523
524 tipc_tlv_sprintf(msg->rep, " Tolerance:%u ms Window:%u packets\n",
525 nla_get_u32(prop[TIPC_NLA_PROP_TOL]),
526 nla_get_u32(prop[TIPC_NLA_PROP_WIN]));
527
528 tipc_tlv_sprintf(msg->rep,
529 " RX packets:%u fragments:%u/%u bundles:%u/%u\n",
530 nla_get_u32(link[TIPC_NLA_LINK_RX]) -
531 nla_get_u32(stats[TIPC_NLA_STATS_RX_INFO]),
532 nla_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTS]),
533 nla_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTED]),
534 nla_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLES]),
535 nla_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLED]));
536
537 tipc_tlv_sprintf(msg->rep,
538 " TX packets:%u fragments:%u/%u bundles:%u/%u\n",
539 nla_get_u32(link[TIPC_NLA_LINK_TX]) -
540 nla_get_u32(stats[TIPC_NLA_STATS_TX_INFO]),
541 nla_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTS]),
542 nla_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTED]),
543 nla_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLES]),
544 nla_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLED]));
545
546 tipc_tlv_sprintf(msg->rep,
547 " TX profile sample:%u packets average:%u octets\n",
548 nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_CNT]),
549 nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_TOT]) /
550 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT]));
551
552 tipc_tlv_sprintf(msg->rep,
553 " 0-64:%u%% -256:%u%% -1024:%u%% -4096:%u%% ",
554 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P0]),
555 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])),
556 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P1]),
557 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])),
558 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P2]),
559 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])),
560 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P3]),
561 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])));
562
563 tipc_tlv_sprintf(msg->rep, "-16384:%u%% -32768:%u%% -66000:%u%%\n",
564 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P4]),
565 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])),
566 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P5]),
567 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])),
568 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P6]),
569 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])));
570
571 tipc_tlv_sprintf(msg->rep,
572 " RX states:%u probes:%u naks:%u defs:%u dups:%u\n",
573 nla_get_u32(stats[TIPC_NLA_STATS_RX_STATES]),
574 nla_get_u32(stats[TIPC_NLA_STATS_RX_PROBES]),
575 nla_get_u32(stats[TIPC_NLA_STATS_RX_NACKS]),
576 nla_get_u32(stats[TIPC_NLA_STATS_RX_DEFERRED]),
577 nla_get_u32(stats[TIPC_NLA_STATS_DUPLICATES]));
578
579 tipc_tlv_sprintf(msg->rep,
580 " TX states:%u probes:%u naks:%u acks:%u dups:%u\n",
581 nla_get_u32(stats[TIPC_NLA_STATS_TX_STATES]),
582 nla_get_u32(stats[TIPC_NLA_STATS_TX_PROBES]),
583 nla_get_u32(stats[TIPC_NLA_STATS_TX_NACKS]),
584 nla_get_u32(stats[TIPC_NLA_STATS_TX_ACKS]),
585 nla_get_u32(stats[TIPC_NLA_STATS_RETRANSMITTED]));
586
587 tipc_tlv_sprintf(msg->rep,
588 " Congestion link:%u Send queue max:%u avg:%u",
589 nla_get_u32(stats[TIPC_NLA_STATS_LINK_CONGS]),
590 nla_get_u32(stats[TIPC_NLA_STATS_MAX_QUEUE]),
591 nla_get_u32(stats[TIPC_NLA_STATS_AVG_QUEUE]));
592
593 return 0;
594}
595
357ebdbf
RA		 596static int tipc_nl_compat_link_dump(struct tipc_nl_compat_msg *msg,
597 struct nlattr **attrs)
598{
599 struct nlattr *link[TIPC_NLA_LINK_MAX + 1];
600 struct tipc_link_info link_info;
297f7d2c 601 int err;
357ebdbf 602
297f7d2c
BD		 603 if (!attrs[TIPC_NLA_LINK])
604 return -EINVAL;
605
606 err = nla_parse_nested(link, TIPC_NLA_LINK_MAX, attrs[TIPC_NLA_LINK],
fceb6435 607 NULL, NULL);
297f7d2c
BD		 608 if (err)
609 return err;
357ebdbf
RA		 610
611 link_info.dest = nla_get_flag(link[TIPC_NLA_LINK_DEST]);
612 link_info.up = htonl(nla_get_flag(link[TIPC_NLA_LINK_UP]));
55e77a3e 613 nla_strlcpy(link_info.str, link[TIPC_NLA_LINK_NAME],
5d2be142 614 TIPC_MAX_LINK_NAME);
357ebdbf
RA		 615
616 return tipc_add_tlv(msg->rep, TIPC_TLV_LINK_INFO,
617 &link_info, sizeof(link_info));
618}
619
c3d6fb85
RA		 620static int __tipc_add_link_prop(struct sk_buff *skb,
621 struct tipc_nl_compat_msg *msg,
622 struct tipc_link_config *lc)
623{
624 switch (msg->cmd) {
625 case TIPC_CMD_SET_LINK_PRI:
626 return nla_put_u32(skb, TIPC_NLA_PROP_PRIO, ntohl(lc->value));
627 case TIPC_CMD_SET_LINK_TOL:
628 return nla_put_u32(skb, TIPC_NLA_PROP_TOL, ntohl(lc->value));
629 case TIPC_CMD_SET_LINK_WINDOW:
630 return nla_put_u32(skb, TIPC_NLA_PROP_WIN, ntohl(lc->value));
631 }
632
633 return -EINVAL;
634}
635
636static int tipc_nl_compat_media_set(struct sk_buff *skb,
637 struct tipc_nl_compat_msg *msg)
37e2d484 638{
37e2d484 639 struct nlattr *prop;
c3d6fb85
RA		 640 struct nlattr *media;
641 struct tipc_link_config *lc;
642
643 lc = (struct tipc_link_config *)TLV_DATA(msg->req);
644
645 media = nla_nest_start(skb, TIPC_NLA_MEDIA);
646 if (!media)
647 return -EMSGSIZE;
648
649 if (nla_put_string(skb, TIPC_NLA_MEDIA_NAME, lc->name))
650 return -EMSGSIZE;
651
652 prop = nla_nest_start(skb, TIPC_NLA_MEDIA_PROP);
653 if (!prop)
654 return -EMSGSIZE;
655
656 __tipc_add_link_prop(skb, msg, lc);
657 nla_nest_end(skb, prop);
658 nla_nest_end(skb, media);
659
660 return 0;
661}
662
663static int tipc_nl_compat_bearer_set(struct sk_buff *skb,
664 struct tipc_nl_compat_msg *msg)
665{
666 struct nlattr *prop;
667 struct nlattr *bearer;
668 struct tipc_link_config *lc;
669
670 lc = (struct tipc_link_config *)TLV_DATA(msg->req);
671
672 bearer = nla_nest_start(skb, TIPC_NLA_BEARER);
673 if (!bearer)
674 return -EMSGSIZE;
675
676 if (nla_put_string(skb, TIPC_NLA_BEARER_NAME, lc->name))
677 return -EMSGSIZE;
678
679 prop = nla_nest_start(skb, TIPC_NLA_BEARER_PROP);
680 if (!prop)
681 return -EMSGSIZE;
682
683 __tipc_add_link_prop(skb, msg, lc);
684 nla_nest_end(skb, prop);
685 nla_nest_end(skb, bearer);
686
687 return 0;
688}
689
690static int __tipc_nl_compat_link_set(struct sk_buff *skb,
691 struct tipc_nl_compat_msg *msg)
692{
693 struct nlattr *prop;
694 struct nlattr *link;
37e2d484
RA		 695 struct tipc_link_config *lc;
696
697 lc = (struct tipc_link_config *)TLV_DATA(msg->req);
698
699 link = nla_nest_start(skb, TIPC_NLA_LINK);
700 if (!link)
701 return -EMSGSIZE;
702
703 if (nla_put_string(skb, TIPC_NLA_LINK_NAME, lc->name))
704 return -EMSGSIZE;
705
706 prop = nla_nest_start(skb, TIPC_NLA_LINK_PROP);
707 if (!prop)
708 return -EMSGSIZE;
709
c3d6fb85 710 __tipc_add_link_prop(skb, msg, lc);
37e2d484
RA		 711 nla_nest_end(skb, prop);
712 nla_nest_end(skb, link);
713
714 return 0;
715}
716
c3d6fb85
RA		 717static int tipc_nl_compat_link_set(struct tipc_nl_compat_cmd_doit *cmd,
718 struct sk_buff *skb,
719 struct tipc_nl_compat_msg *msg)
720{
721 struct tipc_link_config *lc;
722 struct tipc_bearer *bearer;
723 struct tipc_media *media;
724
725 lc = (struct tipc_link_config *)TLV_DATA(msg->req);
726
727 media = tipc_media_find(lc->name);
728 if (media) {
ed4ffdfe 729 cmd->doit = &__tipc_nl_media_set;
c3d6fb85
RA		 730 return tipc_nl_compat_media_set(skb, msg);
731 }
732
733 bearer = tipc_bearer_find(msg->net, lc->name);
734 if (bearer) {
ed4ffdfe 735 cmd->doit = &__tipc_nl_bearer_set;
c3d6fb85
RA		 736 return tipc_nl_compat_bearer_set(skb, msg);
737 }
738
739 return __tipc_nl_compat_link_set(skb, msg);
740}
741
742static int tipc_nl_compat_link_reset_stats(struct tipc_nl_compat_cmd_doit *cmd,
743 struct sk_buff *skb,
1817877b
RA		 744 struct tipc_nl_compat_msg *msg)
745{
746 char *name;
747 struct nlattr *link;
748
749 name = (char *)TLV_DATA(msg->req);
750
751 link = nla_nest_start(skb, TIPC_NLA_LINK);
752 if (!link)
753 return -EMSGSIZE;
754
755 if (nla_put_string(skb, TIPC_NLA_LINK_NAME, name))
756 return -EMSGSIZE;
757
758 nla_nest_end(skb, link);
759
760 return 0;
761}
762
44a8ae94
RA		 763static int tipc_nl_compat_name_table_dump_header(struct tipc_nl_compat_msg *msg)
764{
765 int i;
766 u32 depth;
767 struct tipc_name_table_query *ntq;
768 static const char * const header[] = {
769 "Type ",
770 "Lower Upper ",
771 "Port Identity ",
772 "Publication Scope"
773 };
774
775 ntq = (struct tipc_name_table_query *)TLV_DATA(msg->req);
776
777 depth = ntohl(ntq->depth);
778
779 if (depth > 4)
780 depth = 4;
781 for (i = 0; i < depth; i++)
782 tipc_tlv_sprintf(msg->rep, header[i]);
783 tipc_tlv_sprintf(msg->rep, "\n");
784
785 return 0;
786}
787
788static int tipc_nl_compat_name_table_dump(struct tipc_nl_compat_msg *msg,
789 struct nlattr **attrs)
790{
791 char port_str[27];
792 struct tipc_name_table_query *ntq;
793 struct nlattr *nt[TIPC_NLA_NAME_TABLE_MAX + 1];
794 struct nlattr *publ[TIPC_NLA_PUBL_MAX + 1];
795 u32 node, depth, type, lowbound, upbound;
796 static const char * const scope_str[] = {"", " zone", " cluster",
797 " node"};
297f7d2c 798 int err;
44a8ae94 799
297f7d2c
BD		 800 if (!attrs[TIPC_NLA_NAME_TABLE])
801 return -EINVAL;
44a8ae94 802
297f7d2c 803 err = nla_parse_nested(nt, TIPC_NLA_NAME_TABLE_MAX,
fceb6435 804 attrs[TIPC_NLA_NAME_TABLE], NULL, NULL);
297f7d2c
BD		 805 if (err)
806 return err;
807
808 if (!nt[TIPC_NLA_NAME_TABLE_PUBL])
809 return -EINVAL;
810
811 err = nla_parse_nested(publ, TIPC_NLA_PUBL_MAX,
fceb6435 812 nt[TIPC_NLA_NAME_TABLE_PUBL], NULL, NULL);
297f7d2c
BD		 813 if (err)
814 return err;
44a8ae94
RA		 815
816 ntq = (struct tipc_name_table_query *)TLV_DATA(msg->req);
817
818 depth = ntohl(ntq->depth);
819 type = ntohl(ntq->type);
820 lowbound = ntohl(ntq->lowbound);
821 upbound = ntohl(ntq->upbound);
822
823 if (!(depth & TIPC_NTQ_ALLTYPES) &&
824 (type != nla_get_u32(publ[TIPC_NLA_PUBL_TYPE])))
825 return 0;
826 if (lowbound && (lowbound > nla_get_u32(publ[TIPC_NLA_PUBL_UPPER])))
827 return 0;
828 if (upbound && (upbound < nla_get_u32(publ[TIPC_NLA_PUBL_LOWER])))
829 return 0;
830
831 tipc_tlv_sprintf(msg->rep, "%-10u ",
832 nla_get_u32(publ[TIPC_NLA_PUBL_TYPE]));
833
834 if (depth == 1)
835 goto out;
836
837 tipc_tlv_sprintf(msg->rep, "%-10u %-10u ",
838 nla_get_u32(publ[TIPC_NLA_PUBL_LOWER]),
839 nla_get_u32(publ[TIPC_NLA_PUBL_UPPER]));
840
841 if (depth == 2)
842 goto out;
843
844 node = nla_get_u32(publ[TIPC_NLA_PUBL_NODE]);
845 sprintf(port_str, "<%u.%u.%u:%u>", tipc_zone(node), tipc_cluster(node),
846 tipc_node(node), nla_get_u32(publ[TIPC_NLA_PUBL_REF]));
847 tipc_tlv_sprintf(msg->rep, "%-26s ", port_str);
848
849 if (depth == 3)
850 goto out;
851
852 tipc_tlv_sprintf(msg->rep, "%-10u %s",
03aaaa9b 853 nla_get_u32(publ[TIPC_NLA_PUBL_KEY]),
44a8ae94
RA		 854 scope_str[nla_get_u32(publ[TIPC_NLA_PUBL_SCOPE])]);
855out:
856 tipc_tlv_sprintf(msg->rep, "\n");
857
858 return 0;
859}
860
487d2a3a
RA		 861static int __tipc_nl_compat_publ_dump(struct tipc_nl_compat_msg *msg,
862 struct nlattr **attrs)
863{
864 u32 type, lower, upper;
865 struct nlattr *publ[TIPC_NLA_PUBL_MAX + 1];
297f7d2c 866 int err;
487d2a3a 867
297f7d2c
BD		 868 if (!attrs[TIPC_NLA_PUBL])
869 return -EINVAL;
870
871 err = nla_parse_nested(publ, TIPC_NLA_PUBL_MAX, attrs[TIPC_NLA_PUBL],
fceb6435 872 NULL, NULL);
297f7d2c
BD		 873 if (err)
874 return err;
487d2a3a
RA		 875
876 type = nla_get_u32(publ[TIPC_NLA_PUBL_TYPE]);
877 lower = nla_get_u32(publ[TIPC_NLA_PUBL_LOWER]);
878 upper = nla_get_u32(publ[TIPC_NLA_PUBL_UPPER]);
879
880 if (lower == upper)
881 tipc_tlv_sprintf(msg->rep, " {%u,%u}", type, lower);
882 else
883 tipc_tlv_sprintf(msg->rep, " {%u,%u,%u}", type, lower, upper);
884
885 return 0;
886}
887
888static int tipc_nl_compat_publ_dump(struct tipc_nl_compat_msg *msg, u32 sock)
889{
890 int err;
891 void *hdr;
892 struct nlattr *nest;
893 struct sk_buff *args;
894 struct tipc_nl_compat_cmd_dump dump;
895
896 args = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
897 if (!args)
898 return -ENOMEM;
899
900 hdr = genlmsg_put(args, 0, 0, &tipc_genl_family, NLM_F_MULTI,
901 TIPC_NL_PUBL_GET);
902
903 nest = nla_nest_start(args, TIPC_NLA_SOCK);
904 if (!nest) {
905 kfree_skb(args);
906 return -EMSGSIZE;
907 }
908
909 if (nla_put_u32(args, TIPC_NLA_SOCK_REF, sock)) {
910 kfree_skb(args);
911 return -EMSGSIZE;
912 }
913
914 nla_nest_end(args, nest);
915 genlmsg_end(args, hdr);
916
917 dump.dumpit = tipc_nl_publ_dump;
918 dump.format = __tipc_nl_compat_publ_dump;
919
920 err = __tipc_nl_compat_dumpit(&dump, msg, args);
921
922 kfree_skb(args);
923
924 return err;
925}
926
927static int tipc_nl_compat_sk_dump(struct tipc_nl_compat_msg *msg,
928 struct nlattr **attrs)
929{
930 int err;
931 u32 sock_ref;
932 struct nlattr *sock[TIPC_NLA_SOCK_MAX + 1];
933
297f7d2c
BD		 934 if (!attrs[TIPC_NLA_SOCK])
935 return -EINVAL;
936
937 err = nla_parse_nested(sock, TIPC_NLA_SOCK_MAX, attrs[TIPC_NLA_SOCK],
fceb6435 938 NULL, NULL);
297f7d2c
BD		 939 if (err)
940 return err;
487d2a3a
RA		 941
942 sock_ref = nla_get_u32(sock[TIPC_NLA_SOCK_REF]);
943 tipc_tlv_sprintf(msg->rep, "%u:", sock_ref);
944
945 if (sock[TIPC_NLA_SOCK_CON]) {
946 u32 node;
947 struct nlattr *con[TIPC_NLA_CON_MAX + 1];
948
fceb6435
JB		 949 nla_parse_nested(con, TIPC_NLA_CON_MAX,
950 sock[TIPC_NLA_SOCK_CON], NULL, NULL);
487d2a3a
RA		 951
952 node = nla_get_u32(con[TIPC_NLA_CON_NODE]);
953 tipc_tlv_sprintf(msg->rep, " connected to <%u.%u.%u:%u>",
954 tipc_zone(node),
955 tipc_cluster(node),
956 tipc_node(node),
957 nla_get_u32(con[TIPC_NLA_CON_SOCK]));
958
959 if (con[TIPC_NLA_CON_FLAG])
960 tipc_tlv_sprintf(msg->rep, " via {%u,%u}\n",
961 nla_get_u32(con[TIPC_NLA_CON_TYPE]),
962 nla_get_u32(con[TIPC_NLA_CON_INST]));
963 else
964 tipc_tlv_sprintf(msg->rep, "\n");
965 } else if (sock[TIPC_NLA_SOCK_HAS_PUBL]) {
966 tipc_tlv_sprintf(msg->rep, " bound to");
967
968 err = tipc_nl_compat_publ_dump(msg, sock_ref);
969 if (err)
970 return err;
971 }
972 tipc_tlv_sprintf(msg->rep, "\n");
973
974 return 0;
975}
976
5bfc335a
RA		 977static int tipc_nl_compat_media_dump(struct tipc_nl_compat_msg *msg,
978 struct nlattr **attrs)
979{
980 struct nlattr *media[TIPC_NLA_MEDIA_MAX + 1];
297f7d2c
BD		 981 int err;
982
983 if (!attrs[TIPC_NLA_MEDIA])
984 return -EINVAL;
5bfc335a 985
fceb6435
JB		 986 err = nla_parse_nested(media, TIPC_NLA_MEDIA_MAX,
987 attrs[TIPC_NLA_MEDIA], NULL, NULL);
297f7d2c
BD		 988 if (err)
989 return err;
5bfc335a
RA		 990
991 return tipc_add_tlv(msg->rep, TIPC_TLV_MEDIA_NAME,
992 nla_data(media[TIPC_NLA_MEDIA_NAME]),
993 nla_len(media[TIPC_NLA_MEDIA_NAME]));
994}
995
4b28cb58
RA		 996static int tipc_nl_compat_node_dump(struct tipc_nl_compat_msg *msg,
997 struct nlattr **attrs)
998{
999 struct tipc_node_info node_info;
1000 struct nlattr *node[TIPC_NLA_NODE_MAX + 1];
297f7d2c 1001 int err;
4b28cb58 1002
297f7d2c
BD		 1003 if (!attrs[TIPC_NLA_NODE])
1004 return -EINVAL;
1005
1006 err = nla_parse_nested(node, TIPC_NLA_NODE_MAX, attrs[TIPC_NLA_NODE],
fceb6435 1007 NULL, NULL);
297f7d2c
BD		 1008 if (err)
1009 return err;
4b28cb58
RA		 1010
1011 node_info.addr = htonl(nla_get_u32(node[TIPC_NLA_NODE_ADDR]));
1012 node_info.up = htonl(nla_get_flag(node[TIPC_NLA_NODE_UP]));
1013
1014 return tipc_add_tlv(msg->rep, TIPC_TLV_NODE_INFO, &node_info,
1015 sizeof(node_info));
1016}
1017
c3d6fb85
RA		 1018static int tipc_nl_compat_net_set(struct tipc_nl_compat_cmd_doit *cmd,
1019 struct sk_buff *skb,
d7cc75d3
RA		 1020 struct tipc_nl_compat_msg *msg)
1021{
1022 u32 val;
1023 struct nlattr *net;
1024
1025 val = ntohl(*(__be32 *)TLV_DATA(msg->req));
1026
1027 net = nla_nest_start(skb, TIPC_NLA_NET);
1028 if (!net)
1029 return -EMSGSIZE;
1030
964f9501
RA		 1031 if (msg->cmd == TIPC_CMD_SET_NODE_ADDR) {
1032 if (nla_put_u32(skb, TIPC_NLA_NET_ADDR, val))
1033 return -EMSGSIZE;
1034 } else if (msg->cmd == TIPC_CMD_SET_NETID) {
1035 if (nla_put_u32(skb, TIPC_NLA_NET_ID, val))
1036 return -EMSGSIZE;
1037 }
d7cc75d3
RA		 1038 nla_nest_end(skb, net);
1039
1040 return 0;
1041}
1042
3c26181c
RA		 1043static int tipc_nl_compat_net_dump(struct tipc_nl_compat_msg *msg,
1044 struct nlattr **attrs)
1045{
1046 __be32 id;
1047 struct nlattr *net[TIPC_NLA_NET_MAX + 1];
297f7d2c
BD		 1048 int err;
1049
1050 if (!attrs[TIPC_NLA_NET])
1051 return -EINVAL;
1052
1053 err = nla_parse_nested(net, TIPC_NLA_NET_MAX, attrs[TIPC_NLA_NET],
fceb6435 1054 NULL, NULL);
297f7d2c
BD		 1055 if (err)
1056 return err;
3c26181c 1057
3c26181c
RA		 1058 id = htonl(nla_get_u32(net[TIPC_NLA_NET_ID]));
1059
1060 return tipc_add_tlv(msg->rep, TIPC_TLV_UNSIGNED, &id, sizeof(id));
1061}
1062
5a81a637
RA		 1063static int tipc_cmd_show_stats_compat(struct tipc_nl_compat_msg *msg)
1064{
1065 msg->rep = tipc_tlv_alloc(ULTRA_STRING_MAX_LEN);
1066 if (!msg->rep)
1067 return -ENOMEM;
1068
1069 tipc_tlv_init(msg->rep, TIPC_TLV_ULTRA_STRING);
1070 tipc_tlv_sprintf(msg->rep, "TIPC version " TIPC_MOD_VER "\n");
1071
1072 return 0;
1073}
1074
d0796d1e
RA		 1075static int tipc_nl_compat_handle(struct tipc_nl_compat_msg *msg)
1076{
1077 struct tipc_nl_compat_cmd_dump dump;
9ab15465 1078 struct tipc_nl_compat_cmd_doit doit;
d0796d1e
RA		 1079
1080 memset(&dump, 0, sizeof(dump));
9ab15465 1081 memset(&doit, 0, sizeof(doit));
d0796d1e
RA		 1082
1083 switch (msg->cmd) {
22ae7cff
RA		 1084 case TIPC_CMD_NOOP:
1085 msg->rep = tipc_tlv_alloc(0);
1086 if (!msg->rep)
1087 return -ENOMEM;
1088 return 0;
d0796d1e
RA		 1089 case TIPC_CMD_GET_BEARER_NAMES:
1090 msg->rep_size = MAX_BEARERS * TLV_SPACE(TIPC_MAX_BEARER_NAME);
1091 dump.dumpit = tipc_nl_bearer_dump;
1092 dump.format = tipc_nl_compat_bearer_dump;
1093 return tipc_nl_compat_dumpit(&dump, msg);
9ab15465
RA		 1094 case TIPC_CMD_ENABLE_BEARER:
1095 msg->req_type = TIPC_TLV_BEARER_CONFIG;
ed4ffdfe 1096 doit.doit = __tipc_nl_bearer_enable;
9ab15465
RA		 1097 doit.transcode = tipc_nl_compat_bearer_enable;
1098 return tipc_nl_compat_doit(&doit, msg);
1099 case TIPC_CMD_DISABLE_BEARER:
1100 msg->req_type = TIPC_TLV_BEARER_NAME;
ed4ffdfe 1101 doit.doit = __tipc_nl_bearer_disable;
9ab15465
RA		 1102 doit.transcode = tipc_nl_compat_bearer_disable;
1103 return tipc_nl_compat_doit(&doit, msg);
f2b3b2d4
RA		 1104 case TIPC_CMD_SHOW_LINK_STATS:
1105 msg->req_type = TIPC_TLV_LINK_NAME;
1106 msg->rep_size = ULTRA_STRING_MAX_LEN;
1107 msg->rep_type = TIPC_TLV_ULTRA_STRING;
38206d59 1108 dump.dumpit = tipc_nl_node_dump_link;
f2b3b2d4
RA		 1109 dump.format = tipc_nl_compat_link_stat_dump;
1110 return tipc_nl_compat_dumpit(&dump, msg);
357ebdbf
RA		 1111 case TIPC_CMD_GET_LINKS:
1112 msg->req_type = TIPC_TLV_NET_ADDR;
1113 msg->rep_size = ULTRA_STRING_MAX_LEN;
38206d59 1114 dump.dumpit = tipc_nl_node_dump_link;
357ebdbf
RA		 1115 dump.format = tipc_nl_compat_link_dump;
1116 return tipc_nl_compat_dumpit(&dump, msg);
37e2d484
RA		 1117 case TIPC_CMD_SET_LINK_TOL:
1118 case TIPC_CMD_SET_LINK_PRI:
1119 case TIPC_CMD_SET_LINK_WINDOW:
1120 msg->req_type = TIPC_TLV_LINK_CONFIG;
5be9c086 1121 doit.doit = tipc_nl_node_set_link;
37e2d484
RA		 1122 doit.transcode = tipc_nl_compat_link_set;
1123 return tipc_nl_compat_doit(&doit, msg);
1817877b
RA		 1124 case TIPC_CMD_RESET_LINK_STATS:
1125 msg->req_type = TIPC_TLV_LINK_NAME;
5be9c086 1126 doit.doit = tipc_nl_node_reset_link_stats;
1817877b
RA		 1127 doit.transcode = tipc_nl_compat_link_reset_stats;
1128 return tipc_nl_compat_doit(&doit, msg);
44a8ae94
RA		 1129 case TIPC_CMD_SHOW_NAME_TABLE:
1130 msg->req_type = TIPC_TLV_NAME_TBL_QUERY;
1131 msg->rep_size = ULTRA_STRING_MAX_LEN;
1132 msg->rep_type = TIPC_TLV_ULTRA_STRING;
1133 dump.header = tipc_nl_compat_name_table_dump_header;
1134 dump.dumpit = tipc_nl_name_table_dump;
1135 dump.format = tipc_nl_compat_name_table_dump;
1136 return tipc_nl_compat_dumpit(&dump, msg);
487d2a3a
RA		 1137 case TIPC_CMD_SHOW_PORTS:
1138 msg->rep_size = ULTRA_STRING_MAX_LEN;
1139 msg->rep_type = TIPC_TLV_ULTRA_STRING;
1140 dump.dumpit = tipc_nl_sk_dump;
1141 dump.format = tipc_nl_compat_sk_dump;
1142 return tipc_nl_compat_dumpit(&dump, msg);
5bfc335a
RA		 1143 case TIPC_CMD_GET_MEDIA_NAMES:
1144 msg->rep_size = MAX_MEDIA * TLV_SPACE(TIPC_MAX_MEDIA_NAME);
1145 dump.dumpit = tipc_nl_media_dump;
1146 dump.format = tipc_nl_compat_media_dump;
1147 return tipc_nl_compat_dumpit(&dump, msg);
4b28cb58
RA		 1148 case TIPC_CMD_GET_NODES:
1149 msg->rep_size = ULTRA_STRING_MAX_LEN;
1150 dump.dumpit = tipc_nl_node_dump;
1151 dump.format = tipc_nl_compat_node_dump;
1152 return tipc_nl_compat_dumpit(&dump, msg);
d7cc75d3
RA		 1153 case TIPC_CMD_SET_NODE_ADDR:
1154 msg->req_type = TIPC_TLV_NET_ADDR;
ed4ffdfe 1155 doit.doit = __tipc_nl_net_set;
d7cc75d3
RA		 1156 doit.transcode = tipc_nl_compat_net_set;
1157 return tipc_nl_compat_doit(&doit, msg);
964f9501
RA		 1158 case TIPC_CMD_SET_NETID:
1159 msg->req_type = TIPC_TLV_UNSIGNED;
ed4ffdfe 1160 doit.doit = __tipc_nl_net_set;
964f9501
RA		 1161 doit.transcode = tipc_nl_compat_net_set;
1162 return tipc_nl_compat_doit(&doit, msg);
3c26181c
RA		 1163 case TIPC_CMD_GET_NETID:
1164 msg->rep_size = sizeof(u32);
1165 dump.dumpit = tipc_nl_net_dump;
1166 dump.format = tipc_nl_compat_net_dump;
1167 return tipc_nl_compat_dumpit(&dump, msg);
5a81a637
RA		 1168 case TIPC_CMD_SHOW_STATS:
1169 return tipc_cmd_show_stats_compat(msg);
d0796d1e
RA		 1170 }
1171
1172 return -EOPNOTSUPP;
1173}
1174
1175static int tipc_nl_compat_recv(struct sk_buff *skb, struct genl_info *info)
1176{
1177 int err;
1178 int len;
1179 struct tipc_nl_compat_msg msg;
1180 struct nlmsghdr *req_nlh;
1181 struct nlmsghdr *rep_nlh;
1182 struct tipc_genlmsghdr *req_userhdr = info->userhdr;
d0796d1e
RA		 1183
1184 memset(&msg, 0, sizeof(msg));
1185
1186 req_nlh = (struct nlmsghdr *)skb->data;
1187 msg.req = nlmsg_data(req_nlh) + GENL_HDRLEN + TIPC_GENL_HDRLEN;
1188 msg.cmd = req_userhdr->cmd;
c3d6fb85 1189 msg.net = genl_info_net(info);
619b1745 1190 msg.dst_sk = skb->sk;
d0796d1e
RA		 1191
1192 if ((msg.cmd & 0xC000) && (!netlink_net_capable(skb, CAP_NET_ADMIN))) {
1193 msg.rep = tipc_get_err_tlv(TIPC_CFG_NOT_NET_ADMIN);
1194 err = -EACCES;
1195 goto send;
1196 }
1197
1198 len = nlmsg_attrlen(req_nlh, GENL_HDRLEN + TIPC_GENL_HDRLEN);
8f8ff913 1199 if (len && !TLV_OK(msg.req, len)) {
d0796d1e
RA		 1200 msg.rep = tipc_get_err_tlv(TIPC_CFG_NOT_SUPPORTED);
1201 err = -EOPNOTSUPP;
1202 goto send;
1203 }
1204
1205 err = tipc_nl_compat_handle(&msg);
b063bc5e 1206 if ((err == -EOPNOTSUPP) || (err == -EPERM))
d0796d1e
RA		 1207 msg.rep = tipc_get_err_tlv(TIPC_CFG_NOT_SUPPORTED);
1208 else if (err == -EINVAL)
1209 msg.rep = tipc_get_err_tlv(TIPC_CFG_TLV_ERROR);
1210send:
1211 if (!msg.rep)
1212 return err;
1213
1214 len = nlmsg_total_size(GENL_HDRLEN + TIPC_GENL_HDRLEN);
1215 skb_push(msg.rep, len);
1216 rep_nlh = nlmsg_hdr(msg.rep);
1217 memcpy(rep_nlh, info->nlhdr, len);
1218 rep_nlh->nlmsg_len = msg.rep->len;
c3d6fb85 1219 genlmsg_unicast(msg.net, msg.rep, NETLINK_CB(skb).portid);
d0796d1e
RA		 1220
1221 return err;
1222}
1223
042a9010 1224static const struct genl_ops tipc_genl_compat_ops[] = {
489111e5
JB		 1225 {
1226 .cmd = TIPC_GENL_CMD,
1227 .doit = tipc_nl_compat_recv,
1228 },
1229};
1230
56989f6d 1231static struct genl_family tipc_genl_compat_family __ro_after_init = {
bfb3e5dd
RA		 1232 .name = TIPC_GENL_NAME,
1233 .version = TIPC_GENL_VERSION,
1234 .hdrsize = TIPC_GENL_HDRLEN,
1235 .maxattr = 0,
1236 .netnsok = true,
489111e5
JB		 1237 .module = THIS_MODULE,
1238 .ops = tipc_genl_compat_ops,
1239 .n_ops = ARRAY_SIZE(tipc_genl_compat_ops),
bfb3e5dd
RA		 1240};
1241
56989f6d 1242int __init tipc_netlink_compat_start(void)
bfb3e5dd
RA		 1243{
1244 int res;
1245
489111e5 1246 res = genl_register_family(&tipc_genl_compat_family);
bfb3e5dd
RA		 1247 if (res) {
1248 pr_err("Failed to register legacy compat interface\n");
1249 return res;
1250 }
1251
1252 return 0;
1253}
1254
1255void tipc_netlink_compat_stop(void)
1256{
1257 genl_unregister_family(&tipc_genl_compat_family);
1258}
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