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Commit | Line | Data |
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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 | ||
53 | struct 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 | ||
64 | struct 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 |
70 | struct 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 |
76 | static 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 | ||
8b66fee7 YX |
90 | static inline int TLV_GET_DATA_LEN(struct tlv_desc *tlv) |
91 | { | |
92 | return TLV_GET_LEN(tlv) - TLV_SPACE(0); | |
93 | } | |
94 | ||
d0796d1e RA |
95 | static int tipc_add_tlv(struct sk_buff *skb, u16 type, void *data, u16 len) |
96 | { | |
97 | struct tlv_desc *tlv = (struct tlv_desc *)skb_tail_pointer(skb); | |
98 | ||
99 | if (tipc_skb_tailroom(skb) < TLV_SPACE(len)) | |
100 | return -EMSGSIZE; | |
101 | ||
102 | skb_put(skb, TLV_SPACE(len)); | |
103 | tlv->tlv_type = htons(type); | |
104 | tlv->tlv_len = htons(TLV_LENGTH(len)); | |
105 | if (len && data) | |
106 | memcpy(TLV_DATA(tlv), data, len); | |
107 | ||
108 | return 0; | |
109 | } | |
110 | ||
f2b3b2d4 RA |
111 | static void tipc_tlv_init(struct sk_buff *skb, u16 type) |
112 | { | |
113 | struct tlv_desc *tlv = (struct tlv_desc *)skb->data; | |
114 | ||
115 | TLV_SET_LEN(tlv, 0); | |
116 | TLV_SET_TYPE(tlv, type); | |
117 | skb_put(skb, sizeof(struct tlv_desc)); | |
118 | } | |
119 | ||
120 | static int tipc_tlv_sprintf(struct sk_buff *skb, const char *fmt, ...) | |
121 | { | |
122 | int n; | |
123 | u16 len; | |
124 | u32 rem; | |
125 | char *buf; | |
126 | struct tlv_desc *tlv; | |
127 | va_list args; | |
128 | ||
129 | rem = tipc_skb_tailroom(skb); | |
130 | ||
131 | tlv = (struct tlv_desc *)skb->data; | |
132 | len = TLV_GET_LEN(tlv); | |
133 | buf = TLV_DATA(tlv) + len; | |
134 | ||
135 | va_start(args, fmt); | |
136 | n = vscnprintf(buf, rem, fmt, args); | |
137 | va_end(args); | |
138 | ||
139 | TLV_SET_LEN(tlv, n + len); | |
140 | skb_put(skb, n); | |
141 | ||
142 | return n; | |
143 | } | |
144 | ||
d0796d1e RA |
145 | static struct sk_buff *tipc_tlv_alloc(int size) |
146 | { | |
147 | int hdr_len; | |
148 | struct sk_buff *buf; | |
149 | ||
150 | size = TLV_SPACE(size); | |
151 | hdr_len = nlmsg_total_size(GENL_HDRLEN + TIPC_GENL_HDRLEN); | |
152 | ||
153 | buf = alloc_skb(hdr_len + size, GFP_KERNEL); | |
154 | if (!buf) | |
155 | return NULL; | |
156 | ||
157 | skb_reserve(buf, hdr_len); | |
158 | ||
159 | return buf; | |
160 | } | |
161 | ||
162 | static struct sk_buff *tipc_get_err_tlv(char *str) | |
163 | { | |
164 | int str_len = strlen(str) + 1; | |
165 | struct sk_buff *buf; | |
166 | ||
167 | buf = tipc_tlv_alloc(TLV_SPACE(str_len)); | |
168 | if (buf) | |
169 | tipc_add_tlv(buf, TIPC_TLV_ERROR_STRING, str, str_len); | |
170 | ||
171 | return buf; | |
172 | } | |
173 | ||
8b66fee7 YX |
174 | static inline bool string_is_valid(char *s, int len) |
175 | { | |
176 | return memchr(s, '\0', len) ? true : false; | |
177 | } | |
178 | ||
d0796d1e RA |
179 | static int __tipc_nl_compat_dumpit(struct tipc_nl_compat_cmd_dump *cmd, |
180 | struct tipc_nl_compat_msg *msg, | |
181 | struct sk_buff *arg) | |
182 | { | |
183 | int len = 0; | |
184 | int err; | |
185 | struct sk_buff *buf; | |
186 | struct nlmsghdr *nlmsg; | |
187 | struct netlink_callback cb; | |
188 | ||
189 | memset(&cb, 0, sizeof(cb)); | |
190 | cb.nlh = (struct nlmsghdr *)arg->data; | |
191 | cb.skb = arg; | |
192 | ||
193 | buf = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
194 | if (!buf) | |
195 | return -ENOMEM; | |
196 | ||
197 | buf->sk = msg->dst_sk; | |
12a78b02 CW |
198 | if (__tipc_dump_start(&cb, msg->net)) { |
199 | kfree_skb(buf); | |
200 | return -ENOMEM; | |
201 | } | |
d0796d1e RA |
202 | |
203 | do { | |
204 | int rem; | |
205 | ||
206 | len = (*cmd->dumpit)(buf, &cb); | |
207 | ||
208 | nlmsg_for_each_msg(nlmsg, nlmsg_hdr(buf), len, rem) { | |
209 | struct nlattr **attrs; | |
210 | ||
211 | err = tipc_nlmsg_parse(nlmsg, &attrs); | |
212 | if (err) | |
213 | goto err_out; | |
214 | ||
215 | err = (*cmd->format)(msg, attrs); | |
216 | if (err) | |
217 | goto err_out; | |
218 | ||
219 | if (tipc_skb_tailroom(msg->rep) <= 1) { | |
220 | err = -EMSGSIZE; | |
221 | goto err_out; | |
222 | } | |
223 | } | |
224 | ||
225 | skb_reset_tail_pointer(buf); | |
226 | buf->len = 0; | |
227 | ||
228 | } while (len); | |
229 | ||
230 | err = 0; | |
231 | ||
232 | err_out: | |
8f5c5fcf | 233 | tipc_dump_done(&cb); |
d0796d1e RA |
234 | kfree_skb(buf); |
235 | ||
236 | if (err == -EMSGSIZE) { | |
237 | /* The legacy API only considered messages filling | |
238 | * "ULTRA_STRING_MAX_LEN" to be truncated. | |
239 | */ | |
240 | if ((TIPC_SKB_MAX - msg->rep->len) <= 1) { | |
241 | char *tail = skb_tail_pointer(msg->rep); | |
242 | ||
243 | if (*tail != '\0') | |
244 | sprintf(tail - sizeof(REPLY_TRUNCATED) - 1, | |
245 | REPLY_TRUNCATED); | |
246 | } | |
247 | ||
248 | return 0; | |
249 | } | |
250 | ||
251 | return err; | |
252 | } | |
253 | ||
254 | static int tipc_nl_compat_dumpit(struct tipc_nl_compat_cmd_dump *cmd, | |
255 | struct tipc_nl_compat_msg *msg) | |
256 | { | |
257 | int err; | |
258 | struct sk_buff *arg; | |
259 | ||
f2b3b2d4 RA |
260 | if (msg->req_type && !TLV_CHECK_TYPE(msg->req, msg->req_type)) |
261 | return -EINVAL; | |
262 | ||
d0796d1e RA |
263 | msg->rep = tipc_tlv_alloc(msg->rep_size); |
264 | if (!msg->rep) | |
265 | return -ENOMEM; | |
266 | ||
f2b3b2d4 RA |
267 | if (msg->rep_type) |
268 | tipc_tlv_init(msg->rep, msg->rep_type); | |
269 | ||
44a8ae94 RA |
270 | if (cmd->header) |
271 | (*cmd->header)(msg); | |
272 | ||
d0796d1e RA |
273 | arg = nlmsg_new(0, GFP_KERNEL); |
274 | if (!arg) { | |
275 | kfree_skb(msg->rep); | |
5bfd37b4 | 276 | msg->rep = NULL; |
d0796d1e RA |
277 | return -ENOMEM; |
278 | } | |
279 | ||
280 | err = __tipc_nl_compat_dumpit(cmd, msg, arg); | |
5bfd37b4 | 281 | if (err) { |
d0796d1e | 282 | kfree_skb(msg->rep); |
5bfd37b4 ED |
283 | msg->rep = NULL; |
284 | } | |
d0796d1e RA |
285 | kfree_skb(arg); |
286 | ||
287 | return err; | |
288 | } | |
289 | ||
9ab15465 RA |
290 | static int __tipc_nl_compat_doit(struct tipc_nl_compat_cmd_doit *cmd, |
291 | struct tipc_nl_compat_msg *msg) | |
292 | { | |
293 | int err; | |
294 | struct sk_buff *doit_buf; | |
295 | struct sk_buff *trans_buf; | |
296 | struct nlattr **attrbuf; | |
297 | struct genl_info info; | |
298 | ||
299 | trans_buf = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL); | |
300 | if (!trans_buf) | |
301 | return -ENOMEM; | |
302 | ||
6da2ec56 KC |
303 | attrbuf = kmalloc_array(tipc_genl_family.maxattr + 1, |
304 | sizeof(struct nlattr *), | |
305 | GFP_KERNEL); | |
9ab15465 RA |
306 | if (!attrbuf) { |
307 | err = -ENOMEM; | |
308 | goto trans_out; | |
309 | } | |
310 | ||
9ab15465 RA |
311 | doit_buf = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL); |
312 | if (!doit_buf) { | |
313 | err = -ENOMEM; | |
e5d1a1ee | 314 | goto attrbuf_out; |
9ab15465 RA |
315 | } |
316 | ||
9ab15465 RA |
317 | memset(&info, 0, sizeof(info)); |
318 | info.attrs = attrbuf; | |
319 | ||
ed4ffdfe | 320 | rtnl_lock(); |
e5d1a1ee YX |
321 | err = (*cmd->transcode)(cmd, trans_buf, msg); |
322 | if (err) | |
323 | goto doit_out; | |
324 | ||
325 | err = nla_parse(attrbuf, tipc_genl_family.maxattr, | |
326 | (const struct nlattr *)trans_buf->data, | |
327 | trans_buf->len, NULL, NULL); | |
328 | if (err) | |
329 | goto doit_out; | |
330 | ||
331 | doit_buf->sk = msg->dst_sk; | |
332 | ||
9ab15465 | 333 | err = (*cmd->doit)(doit_buf, &info); |
e5d1a1ee | 334 | doit_out: |
ed4ffdfe | 335 | rtnl_unlock(); |
9ab15465 RA |
336 | |
337 | kfree_skb(doit_buf); | |
e5d1a1ee | 338 | attrbuf_out: |
9ab15465 RA |
339 | kfree(attrbuf); |
340 | trans_out: | |
341 | kfree_skb(trans_buf); | |
342 | ||
343 | return err; | |
344 | } | |
345 | ||
346 | static int tipc_nl_compat_doit(struct tipc_nl_compat_cmd_doit *cmd, | |
347 | struct tipc_nl_compat_msg *msg) | |
348 | { | |
349 | int err; | |
350 | ||
351 | if (msg->req_type && !TLV_CHECK_TYPE(msg->req, msg->req_type)) | |
352 | return -EINVAL; | |
353 | ||
354 | err = __tipc_nl_compat_doit(cmd, msg); | |
355 | if (err) | |
356 | return err; | |
357 | ||
358 | /* The legacy API considered an empty message a success message */ | |
359 | msg->rep = tipc_tlv_alloc(0); | |
360 | if (!msg->rep) | |
361 | return -ENOMEM; | |
362 | ||
363 | return 0; | |
364 | } | |
365 | ||
d0796d1e RA |
366 | static int tipc_nl_compat_bearer_dump(struct tipc_nl_compat_msg *msg, |
367 | struct nlattr **attrs) | |
368 | { | |
369 | struct nlattr *bearer[TIPC_NLA_BEARER_MAX + 1]; | |
297f7d2c BD |
370 | int err; |
371 | ||
372 | if (!attrs[TIPC_NLA_BEARER]) | |
373 | return -EINVAL; | |
d0796d1e | 374 | |
297f7d2c | 375 | err = nla_parse_nested(bearer, TIPC_NLA_BEARER_MAX, |
fceb6435 | 376 | attrs[TIPC_NLA_BEARER], NULL, NULL); |
297f7d2c BD |
377 | if (err) |
378 | return err; | |
d0796d1e RA |
379 | |
380 | return tipc_add_tlv(msg->rep, TIPC_TLV_BEARER_NAME, | |
381 | nla_data(bearer[TIPC_NLA_BEARER_NAME]), | |
382 | nla_len(bearer[TIPC_NLA_BEARER_NAME])); | |
383 | } | |
384 | ||
c3d6fb85 RA |
385 | static int tipc_nl_compat_bearer_enable(struct tipc_nl_compat_cmd_doit *cmd, |
386 | struct sk_buff *skb, | |
9ab15465 RA |
387 | struct tipc_nl_compat_msg *msg) |
388 | { | |
389 | struct nlattr *prop; | |
390 | struct nlattr *bearer; | |
391 | struct tipc_bearer_config *b; | |
0762216c | 392 | int len; |
9ab15465 RA |
393 | |
394 | b = (struct tipc_bearer_config *)TLV_DATA(msg->req); | |
395 | ||
396 | bearer = nla_nest_start(skb, TIPC_NLA_BEARER); | |
397 | if (!bearer) | |
398 | return -EMSGSIZE; | |
399 | ||
0762216c YX |
400 | len = min_t(int, TLV_GET_DATA_LEN(msg->req), TIPC_MAX_BEARER_NAME); |
401 | if (!string_is_valid(b->name, len)) | |
402 | return -EINVAL; | |
403 | ||
9ab15465 RA |
404 | if (nla_put_string(skb, TIPC_NLA_BEARER_NAME, b->name)) |
405 | return -EMSGSIZE; | |
406 | ||
407 | if (nla_put_u32(skb, TIPC_NLA_BEARER_DOMAIN, ntohl(b->disc_domain))) | |
408 | return -EMSGSIZE; | |
409 | ||
410 | if (ntohl(b->priority) <= TIPC_MAX_LINK_PRI) { | |
411 | prop = nla_nest_start(skb, TIPC_NLA_BEARER_PROP); | |
412 | if (!prop) | |
413 | return -EMSGSIZE; | |
414 | if (nla_put_u32(skb, TIPC_NLA_PROP_PRIO, ntohl(b->priority))) | |
415 | return -EMSGSIZE; | |
416 | nla_nest_end(skb, prop); | |
417 | } | |
418 | nla_nest_end(skb, bearer); | |
419 | ||
420 | return 0; | |
421 | } | |
422 | ||
c3d6fb85 RA |
423 | static int tipc_nl_compat_bearer_disable(struct tipc_nl_compat_cmd_doit *cmd, |
424 | struct sk_buff *skb, | |
9ab15465 RA |
425 | struct tipc_nl_compat_msg *msg) |
426 | { | |
427 | char *name; | |
428 | struct nlattr *bearer; | |
0762216c | 429 | int len; |
9ab15465 RA |
430 | |
431 | name = (char *)TLV_DATA(msg->req); | |
432 | ||
433 | bearer = nla_nest_start(skb, TIPC_NLA_BEARER); | |
434 | if (!bearer) | |
435 | return -EMSGSIZE; | |
436 | ||
0762216c YX |
437 | len = min_t(int, TLV_GET_DATA_LEN(msg->req), TIPC_MAX_BEARER_NAME); |
438 | if (!string_is_valid(name, len)) | |
439 | return -EINVAL; | |
440 | ||
9ab15465 RA |
441 | if (nla_put_string(skb, TIPC_NLA_BEARER_NAME, name)) |
442 | return -EMSGSIZE; | |
443 | ||
444 | nla_nest_end(skb, bearer); | |
445 | ||
446 | return 0; | |
447 | } | |
448 | ||
f2b3b2d4 RA |
449 | static inline u32 perc(u32 count, u32 total) |
450 | { | |
451 | return (count * 100 + (total / 2)) / total; | |
452 | } | |
453 | ||
454 | static void __fill_bc_link_stat(struct tipc_nl_compat_msg *msg, | |
455 | struct nlattr *prop[], struct nlattr *stats[]) | |
456 | { | |
457 | tipc_tlv_sprintf(msg->rep, " Window:%u packets\n", | |
458 | nla_get_u32(prop[TIPC_NLA_PROP_WIN])); | |
459 | ||
460 | tipc_tlv_sprintf(msg->rep, | |
461 | " RX packets:%u fragments:%u/%u bundles:%u/%u\n", | |
462 | nla_get_u32(stats[TIPC_NLA_STATS_RX_INFO]), | |
463 | nla_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTS]), | |
464 | nla_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTED]), | |
465 | nla_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLES]), | |
466 | nla_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLED])); | |
467 | ||
468 | tipc_tlv_sprintf(msg->rep, | |
469 | " TX packets:%u fragments:%u/%u bundles:%u/%u\n", | |
470 | nla_get_u32(stats[TIPC_NLA_STATS_TX_INFO]), | |
471 | nla_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTS]), | |
472 | nla_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTED]), | |
473 | nla_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLES]), | |
474 | nla_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLED])); | |
475 | ||
476 | tipc_tlv_sprintf(msg->rep, " RX naks:%u defs:%u dups:%u\n", | |
477 | nla_get_u32(stats[TIPC_NLA_STATS_RX_NACKS]), | |
478 | nla_get_u32(stats[TIPC_NLA_STATS_RX_DEFERRED]), | |
479 | nla_get_u32(stats[TIPC_NLA_STATS_DUPLICATES])); | |
480 | ||
481 | tipc_tlv_sprintf(msg->rep, " TX naks:%u acks:%u dups:%u\n", | |
482 | nla_get_u32(stats[TIPC_NLA_STATS_TX_NACKS]), | |
483 | nla_get_u32(stats[TIPC_NLA_STATS_TX_ACKS]), | |
484 | nla_get_u32(stats[TIPC_NLA_STATS_RETRANSMITTED])); | |
485 | ||
486 | tipc_tlv_sprintf(msg->rep, | |
487 | " Congestion link:%u Send queue max:%u avg:%u", | |
488 | nla_get_u32(stats[TIPC_NLA_STATS_LINK_CONGS]), | |
489 | nla_get_u32(stats[TIPC_NLA_STATS_MAX_QUEUE]), | |
490 | nla_get_u32(stats[TIPC_NLA_STATS_AVG_QUEUE])); | |
491 | } | |
492 | ||
493 | static int tipc_nl_compat_link_stat_dump(struct tipc_nl_compat_msg *msg, | |
494 | struct nlattr **attrs) | |
495 | { | |
496 | char *name; | |
497 | struct nlattr *link[TIPC_NLA_LINK_MAX + 1]; | |
498 | struct nlattr *prop[TIPC_NLA_PROP_MAX + 1]; | |
499 | struct nlattr *stats[TIPC_NLA_STATS_MAX + 1]; | |
297f7d2c | 500 | int err; |
0762216c | 501 | int len; |
f2b3b2d4 | 502 | |
297f7d2c BD |
503 | if (!attrs[TIPC_NLA_LINK]) |
504 | return -EINVAL; | |
f2b3b2d4 | 505 | |
297f7d2c | 506 | err = nla_parse_nested(link, TIPC_NLA_LINK_MAX, attrs[TIPC_NLA_LINK], |
fceb6435 | 507 | NULL, NULL); |
297f7d2c BD |
508 | if (err) |
509 | return err; | |
510 | ||
511 | if (!link[TIPC_NLA_LINK_PROP]) | |
512 | return -EINVAL; | |
f2b3b2d4 | 513 | |
297f7d2c | 514 | err = nla_parse_nested(prop, TIPC_NLA_PROP_MAX, |
fceb6435 | 515 | link[TIPC_NLA_LINK_PROP], NULL, NULL); |
297f7d2c BD |
516 | if (err) |
517 | return err; | |
518 | ||
519 | if (!link[TIPC_NLA_LINK_STATS]) | |
520 | return -EINVAL; | |
521 | ||
522 | err = nla_parse_nested(stats, TIPC_NLA_STATS_MAX, | |
fceb6435 | 523 | link[TIPC_NLA_LINK_STATS], NULL, NULL); |
297f7d2c BD |
524 | if (err) |
525 | return err; | |
f2b3b2d4 RA |
526 | |
527 | name = (char *)TLV_DATA(msg->req); | |
0762216c YX |
528 | |
529 | len = min_t(int, TLV_GET_DATA_LEN(msg->req), TIPC_MAX_LINK_NAME); | |
530 | if (!string_is_valid(name, len)) | |
531 | return -EINVAL; | |
532 | ||
f2b3b2d4 RA |
533 | if (strcmp(name, nla_data(link[TIPC_NLA_LINK_NAME])) != 0) |
534 | return 0; | |
535 | ||
536 | tipc_tlv_sprintf(msg->rep, "\nLink <%s>\n", | |
537 | nla_data(link[TIPC_NLA_LINK_NAME])); | |
538 | ||
539 | if (link[TIPC_NLA_LINK_BROADCAST]) { | |
540 | __fill_bc_link_stat(msg, prop, stats); | |
541 | return 0; | |
542 | } | |
543 | ||
544 | if (link[TIPC_NLA_LINK_ACTIVE]) | |
545 | tipc_tlv_sprintf(msg->rep, " ACTIVE"); | |
546 | else if (link[TIPC_NLA_LINK_UP]) | |
547 | tipc_tlv_sprintf(msg->rep, " STANDBY"); | |
548 | else | |
549 | tipc_tlv_sprintf(msg->rep, " DEFUNCT"); | |
550 | ||
551 | tipc_tlv_sprintf(msg->rep, " MTU:%u Priority:%u", | |
552 | nla_get_u32(link[TIPC_NLA_LINK_MTU]), | |
553 | nla_get_u32(prop[TIPC_NLA_PROP_PRIO])); | |
554 | ||
555 | tipc_tlv_sprintf(msg->rep, " Tolerance:%u ms Window:%u packets\n", | |
556 | nla_get_u32(prop[TIPC_NLA_PROP_TOL]), | |
557 | nla_get_u32(prop[TIPC_NLA_PROP_WIN])); | |
558 | ||
559 | tipc_tlv_sprintf(msg->rep, | |
560 | " RX packets:%u fragments:%u/%u bundles:%u/%u\n", | |
561 | nla_get_u32(link[TIPC_NLA_LINK_RX]) - | |
562 | nla_get_u32(stats[TIPC_NLA_STATS_RX_INFO]), | |
563 | nla_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTS]), | |
564 | nla_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTED]), | |
565 | nla_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLES]), | |
566 | nla_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLED])); | |
567 | ||
568 | tipc_tlv_sprintf(msg->rep, | |
569 | " TX packets:%u fragments:%u/%u bundles:%u/%u\n", | |
570 | nla_get_u32(link[TIPC_NLA_LINK_TX]) - | |
571 | nla_get_u32(stats[TIPC_NLA_STATS_TX_INFO]), | |
572 | nla_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTS]), | |
573 | nla_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTED]), | |
574 | nla_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLES]), | |
575 | nla_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLED])); | |
576 | ||
577 | tipc_tlv_sprintf(msg->rep, | |
578 | " TX profile sample:%u packets average:%u octets\n", | |
579 | nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_CNT]), | |
580 | nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_TOT]) / | |
581 | nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])); | |
582 | ||
583 | tipc_tlv_sprintf(msg->rep, | |
584 | " 0-64:%u%% -256:%u%% -1024:%u%% -4096:%u%% ", | |
585 | perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P0]), | |
586 | nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])), | |
587 | perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P1]), | |
588 | nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])), | |
589 | perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P2]), | |
590 | nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])), | |
591 | perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P3]), | |
592 | nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT]))); | |
593 | ||
594 | tipc_tlv_sprintf(msg->rep, "-16384:%u%% -32768:%u%% -66000:%u%%\n", | |
595 | perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P4]), | |
596 | nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])), | |
597 | perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P5]), | |
598 | nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])), | |
599 | perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P6]), | |
600 | nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT]))); | |
601 | ||
602 | tipc_tlv_sprintf(msg->rep, | |
603 | " RX states:%u probes:%u naks:%u defs:%u dups:%u\n", | |
604 | nla_get_u32(stats[TIPC_NLA_STATS_RX_STATES]), | |
605 | nla_get_u32(stats[TIPC_NLA_STATS_RX_PROBES]), | |
606 | nla_get_u32(stats[TIPC_NLA_STATS_RX_NACKS]), | |
607 | nla_get_u32(stats[TIPC_NLA_STATS_RX_DEFERRED]), | |
608 | nla_get_u32(stats[TIPC_NLA_STATS_DUPLICATES])); | |
609 | ||
610 | tipc_tlv_sprintf(msg->rep, | |
611 | " TX states:%u probes:%u naks:%u acks:%u dups:%u\n", | |
612 | nla_get_u32(stats[TIPC_NLA_STATS_TX_STATES]), | |
613 | nla_get_u32(stats[TIPC_NLA_STATS_TX_PROBES]), | |
614 | nla_get_u32(stats[TIPC_NLA_STATS_TX_NACKS]), | |
615 | nla_get_u32(stats[TIPC_NLA_STATS_TX_ACKS]), | |
616 | nla_get_u32(stats[TIPC_NLA_STATS_RETRANSMITTED])); | |
617 | ||
618 | tipc_tlv_sprintf(msg->rep, | |
619 | " Congestion link:%u Send queue max:%u avg:%u", | |
620 | nla_get_u32(stats[TIPC_NLA_STATS_LINK_CONGS]), | |
621 | nla_get_u32(stats[TIPC_NLA_STATS_MAX_QUEUE]), | |
622 | nla_get_u32(stats[TIPC_NLA_STATS_AVG_QUEUE])); | |
623 | ||
624 | return 0; | |
625 | } | |
626 | ||
357ebdbf RA |
627 | static int tipc_nl_compat_link_dump(struct tipc_nl_compat_msg *msg, |
628 | struct nlattr **attrs) | |
629 | { | |
630 | struct nlattr *link[TIPC_NLA_LINK_MAX + 1]; | |
631 | struct tipc_link_info link_info; | |
297f7d2c | 632 | int err; |
357ebdbf | 633 | |
297f7d2c BD |
634 | if (!attrs[TIPC_NLA_LINK]) |
635 | return -EINVAL; | |
636 | ||
637 | err = nla_parse_nested(link, TIPC_NLA_LINK_MAX, attrs[TIPC_NLA_LINK], | |
fceb6435 | 638 | NULL, NULL); |
297f7d2c BD |
639 | if (err) |
640 | return err; | |
357ebdbf RA |
641 | |
642 | link_info.dest = nla_get_flag(link[TIPC_NLA_LINK_DEST]); | |
643 | link_info.up = htonl(nla_get_flag(link[TIPC_NLA_LINK_UP])); | |
55e77a3e | 644 | nla_strlcpy(link_info.str, link[TIPC_NLA_LINK_NAME], |
5d2be142 | 645 | TIPC_MAX_LINK_NAME); |
357ebdbf RA |
646 | |
647 | return tipc_add_tlv(msg->rep, TIPC_TLV_LINK_INFO, | |
648 | &link_info, sizeof(link_info)); | |
649 | } | |
650 | ||
c3d6fb85 RA |
651 | static int __tipc_add_link_prop(struct sk_buff *skb, |
652 | struct tipc_nl_compat_msg *msg, | |
653 | struct tipc_link_config *lc) | |
654 | { | |
655 | switch (msg->cmd) { | |
656 | case TIPC_CMD_SET_LINK_PRI: | |
657 | return nla_put_u32(skb, TIPC_NLA_PROP_PRIO, ntohl(lc->value)); | |
658 | case TIPC_CMD_SET_LINK_TOL: | |
659 | return nla_put_u32(skb, TIPC_NLA_PROP_TOL, ntohl(lc->value)); | |
660 | case TIPC_CMD_SET_LINK_WINDOW: | |
661 | return nla_put_u32(skb, TIPC_NLA_PROP_WIN, ntohl(lc->value)); | |
662 | } | |
663 | ||
664 | return -EINVAL; | |
665 | } | |
666 | ||
667 | static int tipc_nl_compat_media_set(struct sk_buff *skb, | |
668 | struct tipc_nl_compat_msg *msg) | |
37e2d484 | 669 | { |
37e2d484 | 670 | struct nlattr *prop; |
c3d6fb85 RA |
671 | struct nlattr *media; |
672 | struct tipc_link_config *lc; | |
0762216c | 673 | int len; |
c3d6fb85 RA |
674 | |
675 | lc = (struct tipc_link_config *)TLV_DATA(msg->req); | |
676 | ||
677 | media = nla_nest_start(skb, TIPC_NLA_MEDIA); | |
678 | if (!media) | |
679 | return -EMSGSIZE; | |
680 | ||
0762216c YX |
681 | len = min_t(int, TLV_GET_DATA_LEN(msg->req), TIPC_MAX_MEDIA_NAME); |
682 | if (!string_is_valid(lc->name, len)) | |
683 | return -EINVAL; | |
684 | ||
c3d6fb85 RA |
685 | if (nla_put_string(skb, TIPC_NLA_MEDIA_NAME, lc->name)) |
686 | return -EMSGSIZE; | |
687 | ||
688 | prop = nla_nest_start(skb, TIPC_NLA_MEDIA_PROP); | |
689 | if (!prop) | |
690 | return -EMSGSIZE; | |
691 | ||
692 | __tipc_add_link_prop(skb, msg, lc); | |
693 | nla_nest_end(skb, prop); | |
694 | nla_nest_end(skb, media); | |
695 | ||
696 | return 0; | |
697 | } | |
698 | ||
699 | static int tipc_nl_compat_bearer_set(struct sk_buff *skb, | |
700 | struct tipc_nl_compat_msg *msg) | |
701 | { | |
702 | struct nlattr *prop; | |
703 | struct nlattr *bearer; | |
704 | struct tipc_link_config *lc; | |
0762216c | 705 | int len; |
c3d6fb85 RA |
706 | |
707 | lc = (struct tipc_link_config *)TLV_DATA(msg->req); | |
708 | ||
709 | bearer = nla_nest_start(skb, TIPC_NLA_BEARER); | |
710 | if (!bearer) | |
711 | return -EMSGSIZE; | |
712 | ||
0762216c YX |
713 | len = min_t(int, TLV_GET_DATA_LEN(msg->req), TIPC_MAX_MEDIA_NAME); |
714 | if (!string_is_valid(lc->name, len)) | |
715 | return -EINVAL; | |
716 | ||
c3d6fb85 RA |
717 | if (nla_put_string(skb, TIPC_NLA_BEARER_NAME, lc->name)) |
718 | return -EMSGSIZE; | |
719 | ||
720 | prop = nla_nest_start(skb, TIPC_NLA_BEARER_PROP); | |
721 | if (!prop) | |
722 | return -EMSGSIZE; | |
723 | ||
724 | __tipc_add_link_prop(skb, msg, lc); | |
725 | nla_nest_end(skb, prop); | |
726 | nla_nest_end(skb, bearer); | |
727 | ||
728 | return 0; | |
729 | } | |
730 | ||
731 | static int __tipc_nl_compat_link_set(struct sk_buff *skb, | |
732 | struct tipc_nl_compat_msg *msg) | |
733 | { | |
734 | struct nlattr *prop; | |
735 | struct nlattr *link; | |
37e2d484 RA |
736 | struct tipc_link_config *lc; |
737 | ||
738 | lc = (struct tipc_link_config *)TLV_DATA(msg->req); | |
739 | ||
740 | link = nla_nest_start(skb, TIPC_NLA_LINK); | |
741 | if (!link) | |
742 | return -EMSGSIZE; | |
743 | ||
744 | if (nla_put_string(skb, TIPC_NLA_LINK_NAME, lc->name)) | |
745 | return -EMSGSIZE; | |
746 | ||
747 | prop = nla_nest_start(skb, TIPC_NLA_LINK_PROP); | |
748 | if (!prop) | |
749 | return -EMSGSIZE; | |
750 | ||
c3d6fb85 | 751 | __tipc_add_link_prop(skb, msg, lc); |
37e2d484 RA |
752 | nla_nest_end(skb, prop); |
753 | nla_nest_end(skb, link); | |
754 | ||
755 | return 0; | |
756 | } | |
757 | ||
c3d6fb85 RA |
758 | static int tipc_nl_compat_link_set(struct tipc_nl_compat_cmd_doit *cmd, |
759 | struct sk_buff *skb, | |
760 | struct tipc_nl_compat_msg *msg) | |
761 | { | |
762 | struct tipc_link_config *lc; | |
763 | struct tipc_bearer *bearer; | |
764 | struct tipc_media *media; | |
edf5ff04 | 765 | int len; |
c3d6fb85 RA |
766 | |
767 | lc = (struct tipc_link_config *)TLV_DATA(msg->req); | |
768 | ||
edf5ff04 YX |
769 | len = min_t(int, TLV_GET_DATA_LEN(msg->req), TIPC_MAX_LINK_NAME); |
770 | if (!string_is_valid(lc->name, len)) | |
771 | return -EINVAL; | |
772 | ||
c3d6fb85 RA |
773 | media = tipc_media_find(lc->name); |
774 | if (media) { | |
ed4ffdfe | 775 | cmd->doit = &__tipc_nl_media_set; |
c3d6fb85 RA |
776 | return tipc_nl_compat_media_set(skb, msg); |
777 | } | |
778 | ||
779 | bearer = tipc_bearer_find(msg->net, lc->name); | |
780 | if (bearer) { | |
ed4ffdfe | 781 | cmd->doit = &__tipc_nl_bearer_set; |
c3d6fb85 RA |
782 | return tipc_nl_compat_bearer_set(skb, msg); |
783 | } | |
784 | ||
785 | return __tipc_nl_compat_link_set(skb, msg); | |
786 | } | |
787 | ||
788 | static int tipc_nl_compat_link_reset_stats(struct tipc_nl_compat_cmd_doit *cmd, | |
789 | struct sk_buff *skb, | |
1817877b RA |
790 | struct tipc_nl_compat_msg *msg) |
791 | { | |
792 | char *name; | |
793 | struct nlattr *link; | |
8b66fee7 | 794 | int len; |
1817877b RA |
795 | |
796 | name = (char *)TLV_DATA(msg->req); | |
797 | ||
798 | link = nla_nest_start(skb, TIPC_NLA_LINK); | |
799 | if (!link) | |
800 | return -EMSGSIZE; | |
801 | ||
8b66fee7 YX |
802 | len = min_t(int, TLV_GET_DATA_LEN(msg->req), TIPC_MAX_LINK_NAME); |
803 | if (!string_is_valid(name, len)) | |
804 | return -EINVAL; | |
805 | ||
1817877b RA |
806 | if (nla_put_string(skb, TIPC_NLA_LINK_NAME, name)) |
807 | return -EMSGSIZE; | |
808 | ||
809 | nla_nest_end(skb, link); | |
810 | ||
811 | return 0; | |
812 | } | |
813 | ||
44a8ae94 RA |
814 | static int tipc_nl_compat_name_table_dump_header(struct tipc_nl_compat_msg *msg) |
815 | { | |
816 | int i; | |
817 | u32 depth; | |
818 | struct tipc_name_table_query *ntq; | |
819 | static const char * const header[] = { | |
820 | "Type ", | |
821 | "Lower Upper ", | |
822 | "Port Identity ", | |
823 | "Publication Scope" | |
824 | }; | |
825 | ||
826 | ntq = (struct tipc_name_table_query *)TLV_DATA(msg->req); | |
974cb0e3 YX |
827 | if (TLV_GET_DATA_LEN(msg->req) < sizeof(struct tipc_name_table_query)) |
828 | return -EINVAL; | |
44a8ae94 RA |
829 | |
830 | depth = ntohl(ntq->depth); | |
831 | ||
832 | if (depth > 4) | |
833 | depth = 4; | |
834 | for (i = 0; i < depth; i++) | |
835 | tipc_tlv_sprintf(msg->rep, header[i]); | |
836 | tipc_tlv_sprintf(msg->rep, "\n"); | |
837 | ||
838 | return 0; | |
839 | } | |
840 | ||
841 | static int tipc_nl_compat_name_table_dump(struct tipc_nl_compat_msg *msg, | |
842 | struct nlattr **attrs) | |
843 | { | |
844 | char port_str[27]; | |
845 | struct tipc_name_table_query *ntq; | |
846 | struct nlattr *nt[TIPC_NLA_NAME_TABLE_MAX + 1]; | |
847 | struct nlattr *publ[TIPC_NLA_PUBL_MAX + 1]; | |
848 | u32 node, depth, type, lowbound, upbound; | |
849 | static const char * const scope_str[] = {"", " zone", " cluster", | |
850 | " node"}; | |
297f7d2c | 851 | int err; |
44a8ae94 | 852 | |
297f7d2c BD |
853 | if (!attrs[TIPC_NLA_NAME_TABLE]) |
854 | return -EINVAL; | |
44a8ae94 | 855 | |
297f7d2c | 856 | err = nla_parse_nested(nt, TIPC_NLA_NAME_TABLE_MAX, |
fceb6435 | 857 | attrs[TIPC_NLA_NAME_TABLE], NULL, NULL); |
297f7d2c BD |
858 | if (err) |
859 | return err; | |
860 | ||
861 | if (!nt[TIPC_NLA_NAME_TABLE_PUBL]) | |
862 | return -EINVAL; | |
863 | ||
864 | err = nla_parse_nested(publ, TIPC_NLA_PUBL_MAX, | |
fceb6435 | 865 | nt[TIPC_NLA_NAME_TABLE_PUBL], NULL, NULL); |
297f7d2c BD |
866 | if (err) |
867 | return err; | |
44a8ae94 RA |
868 | |
869 | ntq = (struct tipc_name_table_query *)TLV_DATA(msg->req); | |
870 | ||
871 | depth = ntohl(ntq->depth); | |
872 | type = ntohl(ntq->type); | |
873 | lowbound = ntohl(ntq->lowbound); | |
874 | upbound = ntohl(ntq->upbound); | |
875 | ||
876 | if (!(depth & TIPC_NTQ_ALLTYPES) && | |
877 | (type != nla_get_u32(publ[TIPC_NLA_PUBL_TYPE]))) | |
878 | return 0; | |
879 | if (lowbound && (lowbound > nla_get_u32(publ[TIPC_NLA_PUBL_UPPER]))) | |
880 | return 0; | |
881 | if (upbound && (upbound < nla_get_u32(publ[TIPC_NLA_PUBL_LOWER]))) | |
882 | return 0; | |
883 | ||
884 | tipc_tlv_sprintf(msg->rep, "%-10u ", | |
885 | nla_get_u32(publ[TIPC_NLA_PUBL_TYPE])); | |
886 | ||
887 | if (depth == 1) | |
888 | goto out; | |
889 | ||
890 | tipc_tlv_sprintf(msg->rep, "%-10u %-10u ", | |
891 | nla_get_u32(publ[TIPC_NLA_PUBL_LOWER]), | |
892 | nla_get_u32(publ[TIPC_NLA_PUBL_UPPER])); | |
893 | ||
894 | if (depth == 2) | |
895 | goto out; | |
896 | ||
897 | node = nla_get_u32(publ[TIPC_NLA_PUBL_NODE]); | |
898 | sprintf(port_str, "<%u.%u.%u:%u>", tipc_zone(node), tipc_cluster(node), | |
899 | tipc_node(node), nla_get_u32(publ[TIPC_NLA_PUBL_REF])); | |
900 | tipc_tlv_sprintf(msg->rep, "%-26s ", port_str); | |
901 | ||
902 | if (depth == 3) | |
903 | goto out; | |
904 | ||
905 | tipc_tlv_sprintf(msg->rep, "%-10u %s", | |
03aaaa9b | 906 | nla_get_u32(publ[TIPC_NLA_PUBL_KEY]), |
44a8ae94 RA |
907 | scope_str[nla_get_u32(publ[TIPC_NLA_PUBL_SCOPE])]); |
908 | out: | |
909 | tipc_tlv_sprintf(msg->rep, "\n"); | |
910 | ||
911 | return 0; | |
912 | } | |
913 | ||
487d2a3a RA |
914 | static int __tipc_nl_compat_publ_dump(struct tipc_nl_compat_msg *msg, |
915 | struct nlattr **attrs) | |
916 | { | |
917 | u32 type, lower, upper; | |
918 | struct nlattr *publ[TIPC_NLA_PUBL_MAX + 1]; | |
297f7d2c | 919 | int err; |
487d2a3a | 920 | |
297f7d2c BD |
921 | if (!attrs[TIPC_NLA_PUBL]) |
922 | return -EINVAL; | |
923 | ||
924 | err = nla_parse_nested(publ, TIPC_NLA_PUBL_MAX, attrs[TIPC_NLA_PUBL], | |
fceb6435 | 925 | NULL, NULL); |
297f7d2c BD |
926 | if (err) |
927 | return err; | |
487d2a3a RA |
928 | |
929 | type = nla_get_u32(publ[TIPC_NLA_PUBL_TYPE]); | |
930 | lower = nla_get_u32(publ[TIPC_NLA_PUBL_LOWER]); | |
931 | upper = nla_get_u32(publ[TIPC_NLA_PUBL_UPPER]); | |
932 | ||
933 | if (lower == upper) | |
934 | tipc_tlv_sprintf(msg->rep, " {%u,%u}", type, lower); | |
935 | else | |
936 | tipc_tlv_sprintf(msg->rep, " {%u,%u,%u}", type, lower, upper); | |
937 | ||
938 | return 0; | |
939 | } | |
940 | ||
941 | static int tipc_nl_compat_publ_dump(struct tipc_nl_compat_msg *msg, u32 sock) | |
942 | { | |
943 | int err; | |
944 | void *hdr; | |
945 | struct nlattr *nest; | |
946 | struct sk_buff *args; | |
947 | struct tipc_nl_compat_cmd_dump dump; | |
948 | ||
949 | args = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
950 | if (!args) | |
951 | return -ENOMEM; | |
952 | ||
953 | hdr = genlmsg_put(args, 0, 0, &tipc_genl_family, NLM_F_MULTI, | |
954 | TIPC_NL_PUBL_GET); | |
f87d8ad9 GS |
955 | if (!hdr) { |
956 | kfree_skb(args); | |
46273cf7 | 957 | return -EMSGSIZE; |
f87d8ad9 | 958 | } |
487d2a3a RA |
959 | |
960 | nest = nla_nest_start(args, TIPC_NLA_SOCK); | |
961 | if (!nest) { | |
962 | kfree_skb(args); | |
963 | return -EMSGSIZE; | |
964 | } | |
965 | ||
966 | if (nla_put_u32(args, TIPC_NLA_SOCK_REF, sock)) { | |
967 | kfree_skb(args); | |
968 | return -EMSGSIZE; | |
969 | } | |
970 | ||
971 | nla_nest_end(args, nest); | |
972 | genlmsg_end(args, hdr); | |
973 | ||
974 | dump.dumpit = tipc_nl_publ_dump; | |
975 | dump.format = __tipc_nl_compat_publ_dump; | |
976 | ||
977 | err = __tipc_nl_compat_dumpit(&dump, msg, args); | |
978 | ||
979 | kfree_skb(args); | |
980 | ||
981 | return err; | |
982 | } | |
983 | ||
984 | static int tipc_nl_compat_sk_dump(struct tipc_nl_compat_msg *msg, | |
985 | struct nlattr **attrs) | |
986 | { | |
987 | int err; | |
988 | u32 sock_ref; | |
989 | struct nlattr *sock[TIPC_NLA_SOCK_MAX + 1]; | |
990 | ||
297f7d2c BD |
991 | if (!attrs[TIPC_NLA_SOCK]) |
992 | return -EINVAL; | |
993 | ||
994 | err = nla_parse_nested(sock, TIPC_NLA_SOCK_MAX, attrs[TIPC_NLA_SOCK], | |
fceb6435 | 995 | NULL, NULL); |
297f7d2c BD |
996 | if (err) |
997 | return err; | |
487d2a3a RA |
998 | |
999 | sock_ref = nla_get_u32(sock[TIPC_NLA_SOCK_REF]); | |
1000 | tipc_tlv_sprintf(msg->rep, "%u:", sock_ref); | |
1001 | ||
1002 | if (sock[TIPC_NLA_SOCK_CON]) { | |
1003 | u32 node; | |
1004 | struct nlattr *con[TIPC_NLA_CON_MAX + 1]; | |
1005 | ||
89dfd008 AP |
1006 | err = nla_parse_nested(con, TIPC_NLA_CON_MAX, |
1007 | sock[TIPC_NLA_SOCK_CON], NULL, NULL); | |
1008 | ||
1009 | if (err) | |
1010 | return err; | |
487d2a3a RA |
1011 | |
1012 | node = nla_get_u32(con[TIPC_NLA_CON_NODE]); | |
1013 | tipc_tlv_sprintf(msg->rep, " connected to <%u.%u.%u:%u>", | |
1014 | tipc_zone(node), | |
1015 | tipc_cluster(node), | |
1016 | tipc_node(node), | |
1017 | nla_get_u32(con[TIPC_NLA_CON_SOCK])); | |
1018 | ||
1019 | if (con[TIPC_NLA_CON_FLAG]) | |
1020 | tipc_tlv_sprintf(msg->rep, " via {%u,%u}\n", | |
1021 | nla_get_u32(con[TIPC_NLA_CON_TYPE]), | |
1022 | nla_get_u32(con[TIPC_NLA_CON_INST])); | |
1023 | else | |
1024 | tipc_tlv_sprintf(msg->rep, "\n"); | |
1025 | } else if (sock[TIPC_NLA_SOCK_HAS_PUBL]) { | |
1026 | tipc_tlv_sprintf(msg->rep, " bound to"); | |
1027 | ||
1028 | err = tipc_nl_compat_publ_dump(msg, sock_ref); | |
1029 | if (err) | |
1030 | return err; | |
1031 | } | |
1032 | tipc_tlv_sprintf(msg->rep, "\n"); | |
1033 | ||
1034 | return 0; | |
1035 | } | |
1036 | ||
5bfc335a RA |
1037 | static int tipc_nl_compat_media_dump(struct tipc_nl_compat_msg *msg, |
1038 | struct nlattr **attrs) | |
1039 | { | |
1040 | struct nlattr *media[TIPC_NLA_MEDIA_MAX + 1]; | |
297f7d2c BD |
1041 | int err; |
1042 | ||
1043 | if (!attrs[TIPC_NLA_MEDIA]) | |
1044 | return -EINVAL; | |
5bfc335a | 1045 | |
fceb6435 JB |
1046 | err = nla_parse_nested(media, TIPC_NLA_MEDIA_MAX, |
1047 | attrs[TIPC_NLA_MEDIA], NULL, NULL); | |
297f7d2c BD |
1048 | if (err) |
1049 | return err; | |
5bfc335a RA |
1050 | |
1051 | return tipc_add_tlv(msg->rep, TIPC_TLV_MEDIA_NAME, | |
1052 | nla_data(media[TIPC_NLA_MEDIA_NAME]), | |
1053 | nla_len(media[TIPC_NLA_MEDIA_NAME])); | |
1054 | } | |
1055 | ||
4b28cb58 RA |
1056 | static int tipc_nl_compat_node_dump(struct tipc_nl_compat_msg *msg, |
1057 | struct nlattr **attrs) | |
1058 | { | |
1059 | struct tipc_node_info node_info; | |
1060 | struct nlattr *node[TIPC_NLA_NODE_MAX + 1]; | |
297f7d2c | 1061 | int err; |
4b28cb58 | 1062 | |
297f7d2c BD |
1063 | if (!attrs[TIPC_NLA_NODE]) |
1064 | return -EINVAL; | |
1065 | ||
1066 | err = nla_parse_nested(node, TIPC_NLA_NODE_MAX, attrs[TIPC_NLA_NODE], | |
fceb6435 | 1067 | NULL, NULL); |
297f7d2c BD |
1068 | if (err) |
1069 | return err; | |
4b28cb58 RA |
1070 | |
1071 | node_info.addr = htonl(nla_get_u32(node[TIPC_NLA_NODE_ADDR])); | |
1072 | node_info.up = htonl(nla_get_flag(node[TIPC_NLA_NODE_UP])); | |
1073 | ||
1074 | return tipc_add_tlv(msg->rep, TIPC_TLV_NODE_INFO, &node_info, | |
1075 | sizeof(node_info)); | |
1076 | } | |
1077 | ||
c3d6fb85 RA |
1078 | static int tipc_nl_compat_net_set(struct tipc_nl_compat_cmd_doit *cmd, |
1079 | struct sk_buff *skb, | |
d7cc75d3 RA |
1080 | struct tipc_nl_compat_msg *msg) |
1081 | { | |
1082 | u32 val; | |
1083 | struct nlattr *net; | |
1084 | ||
1085 | val = ntohl(*(__be32 *)TLV_DATA(msg->req)); | |
1086 | ||
1087 | net = nla_nest_start(skb, TIPC_NLA_NET); | |
1088 | if (!net) | |
1089 | return -EMSGSIZE; | |
1090 | ||
964f9501 RA |
1091 | if (msg->cmd == TIPC_CMD_SET_NODE_ADDR) { |
1092 | if (nla_put_u32(skb, TIPC_NLA_NET_ADDR, val)) | |
1093 | return -EMSGSIZE; | |
1094 | } else if (msg->cmd == TIPC_CMD_SET_NETID) { | |
1095 | if (nla_put_u32(skb, TIPC_NLA_NET_ID, val)) | |
1096 | return -EMSGSIZE; | |
1097 | } | |
d7cc75d3 RA |
1098 | nla_nest_end(skb, net); |
1099 | ||
1100 | return 0; | |
1101 | } | |
1102 | ||
3c26181c RA |
1103 | static int tipc_nl_compat_net_dump(struct tipc_nl_compat_msg *msg, |
1104 | struct nlattr **attrs) | |
1105 | { | |
1106 | __be32 id; | |
1107 | struct nlattr *net[TIPC_NLA_NET_MAX + 1]; | |
297f7d2c BD |
1108 | int err; |
1109 | ||
1110 | if (!attrs[TIPC_NLA_NET]) | |
1111 | return -EINVAL; | |
1112 | ||
1113 | err = nla_parse_nested(net, TIPC_NLA_NET_MAX, attrs[TIPC_NLA_NET], | |
fceb6435 | 1114 | NULL, NULL); |
297f7d2c BD |
1115 | if (err) |
1116 | return err; | |
3c26181c | 1117 | |
3c26181c RA |
1118 | id = htonl(nla_get_u32(net[TIPC_NLA_NET_ID])); |
1119 | ||
1120 | return tipc_add_tlv(msg->rep, TIPC_TLV_UNSIGNED, &id, sizeof(id)); | |
1121 | } | |
1122 | ||
5a81a637 RA |
1123 | static int tipc_cmd_show_stats_compat(struct tipc_nl_compat_msg *msg) |
1124 | { | |
1125 | msg->rep = tipc_tlv_alloc(ULTRA_STRING_MAX_LEN); | |
1126 | if (!msg->rep) | |
1127 | return -ENOMEM; | |
1128 | ||
1129 | tipc_tlv_init(msg->rep, TIPC_TLV_ULTRA_STRING); | |
1130 | tipc_tlv_sprintf(msg->rep, "TIPC version " TIPC_MOD_VER "\n"); | |
1131 | ||
1132 | return 0; | |
1133 | } | |
1134 | ||
d0796d1e RA |
1135 | static int tipc_nl_compat_handle(struct tipc_nl_compat_msg *msg) |
1136 | { | |
1137 | struct tipc_nl_compat_cmd_dump dump; | |
9ab15465 | 1138 | struct tipc_nl_compat_cmd_doit doit; |
d0796d1e RA |
1139 | |
1140 | memset(&dump, 0, sizeof(dump)); | |
9ab15465 | 1141 | memset(&doit, 0, sizeof(doit)); |
d0796d1e RA |
1142 | |
1143 | switch (msg->cmd) { | |
22ae7cff RA |
1144 | case TIPC_CMD_NOOP: |
1145 | msg->rep = tipc_tlv_alloc(0); | |
1146 | if (!msg->rep) | |
1147 | return -ENOMEM; | |
1148 | return 0; | |
d0796d1e RA |
1149 | case TIPC_CMD_GET_BEARER_NAMES: |
1150 | msg->rep_size = MAX_BEARERS * TLV_SPACE(TIPC_MAX_BEARER_NAME); | |
1151 | dump.dumpit = tipc_nl_bearer_dump; | |
1152 | dump.format = tipc_nl_compat_bearer_dump; | |
1153 | return tipc_nl_compat_dumpit(&dump, msg); | |
9ab15465 RA |
1154 | case TIPC_CMD_ENABLE_BEARER: |
1155 | msg->req_type = TIPC_TLV_BEARER_CONFIG; | |
ed4ffdfe | 1156 | doit.doit = __tipc_nl_bearer_enable; |
9ab15465 RA |
1157 | doit.transcode = tipc_nl_compat_bearer_enable; |
1158 | return tipc_nl_compat_doit(&doit, msg); | |
1159 | case TIPC_CMD_DISABLE_BEARER: | |
1160 | msg->req_type = TIPC_TLV_BEARER_NAME; | |
ed4ffdfe | 1161 | doit.doit = __tipc_nl_bearer_disable; |
9ab15465 RA |
1162 | doit.transcode = tipc_nl_compat_bearer_disable; |
1163 | return tipc_nl_compat_doit(&doit, msg); | |
f2b3b2d4 RA |
1164 | case TIPC_CMD_SHOW_LINK_STATS: |
1165 | msg->req_type = TIPC_TLV_LINK_NAME; | |
1166 | msg->rep_size = ULTRA_STRING_MAX_LEN; | |
1167 | msg->rep_type = TIPC_TLV_ULTRA_STRING; | |
38206d59 | 1168 | dump.dumpit = tipc_nl_node_dump_link; |
f2b3b2d4 RA |
1169 | dump.format = tipc_nl_compat_link_stat_dump; |
1170 | return tipc_nl_compat_dumpit(&dump, msg); | |
357ebdbf RA |
1171 | case TIPC_CMD_GET_LINKS: |
1172 | msg->req_type = TIPC_TLV_NET_ADDR; | |
1173 | msg->rep_size = ULTRA_STRING_MAX_LEN; | |
38206d59 | 1174 | dump.dumpit = tipc_nl_node_dump_link; |
357ebdbf RA |
1175 | dump.format = tipc_nl_compat_link_dump; |
1176 | return tipc_nl_compat_dumpit(&dump, msg); | |
37e2d484 RA |
1177 | case TIPC_CMD_SET_LINK_TOL: |
1178 | case TIPC_CMD_SET_LINK_PRI: | |
1179 | case TIPC_CMD_SET_LINK_WINDOW: | |
1180 | msg->req_type = TIPC_TLV_LINK_CONFIG; | |
5be9c086 | 1181 | doit.doit = tipc_nl_node_set_link; |
37e2d484 RA |
1182 | doit.transcode = tipc_nl_compat_link_set; |
1183 | return tipc_nl_compat_doit(&doit, msg); | |
1817877b RA |
1184 | case TIPC_CMD_RESET_LINK_STATS: |
1185 | msg->req_type = TIPC_TLV_LINK_NAME; | |
5be9c086 | 1186 | doit.doit = tipc_nl_node_reset_link_stats; |
1817877b RA |
1187 | doit.transcode = tipc_nl_compat_link_reset_stats; |
1188 | return tipc_nl_compat_doit(&doit, msg); | |
44a8ae94 RA |
1189 | case TIPC_CMD_SHOW_NAME_TABLE: |
1190 | msg->req_type = TIPC_TLV_NAME_TBL_QUERY; | |
1191 | msg->rep_size = ULTRA_STRING_MAX_LEN; | |
1192 | msg->rep_type = TIPC_TLV_ULTRA_STRING; | |
1193 | dump.header = tipc_nl_compat_name_table_dump_header; | |
1194 | dump.dumpit = tipc_nl_name_table_dump; | |
1195 | dump.format = tipc_nl_compat_name_table_dump; | |
1196 | return tipc_nl_compat_dumpit(&dump, msg); | |
487d2a3a RA |
1197 | case TIPC_CMD_SHOW_PORTS: |
1198 | msg->rep_size = ULTRA_STRING_MAX_LEN; | |
1199 | msg->rep_type = TIPC_TLV_ULTRA_STRING; | |
1200 | dump.dumpit = tipc_nl_sk_dump; | |
1201 | dump.format = tipc_nl_compat_sk_dump; | |
1202 | return tipc_nl_compat_dumpit(&dump, msg); | |
5bfc335a RA |
1203 | case TIPC_CMD_GET_MEDIA_NAMES: |
1204 | msg->rep_size = MAX_MEDIA * TLV_SPACE(TIPC_MAX_MEDIA_NAME); | |
1205 | dump.dumpit = tipc_nl_media_dump; | |
1206 | dump.format = tipc_nl_compat_media_dump; | |
1207 | return tipc_nl_compat_dumpit(&dump, msg); | |
4b28cb58 RA |
1208 | case TIPC_CMD_GET_NODES: |
1209 | msg->rep_size = ULTRA_STRING_MAX_LEN; | |
1210 | dump.dumpit = tipc_nl_node_dump; | |
1211 | dump.format = tipc_nl_compat_node_dump; | |
1212 | return tipc_nl_compat_dumpit(&dump, msg); | |
d7cc75d3 RA |
1213 | case TIPC_CMD_SET_NODE_ADDR: |
1214 | msg->req_type = TIPC_TLV_NET_ADDR; | |
ed4ffdfe | 1215 | doit.doit = __tipc_nl_net_set; |
d7cc75d3 RA |
1216 | doit.transcode = tipc_nl_compat_net_set; |
1217 | return tipc_nl_compat_doit(&doit, msg); | |
964f9501 RA |
1218 | case TIPC_CMD_SET_NETID: |
1219 | msg->req_type = TIPC_TLV_UNSIGNED; | |
ed4ffdfe | 1220 | doit.doit = __tipc_nl_net_set; |
964f9501 RA |
1221 | doit.transcode = tipc_nl_compat_net_set; |
1222 | return tipc_nl_compat_doit(&doit, msg); | |
3c26181c RA |
1223 | case TIPC_CMD_GET_NETID: |
1224 | msg->rep_size = sizeof(u32); | |
1225 | dump.dumpit = tipc_nl_net_dump; | |
1226 | dump.format = tipc_nl_compat_net_dump; | |
1227 | return tipc_nl_compat_dumpit(&dump, msg); | |
5a81a637 RA |
1228 | case TIPC_CMD_SHOW_STATS: |
1229 | return tipc_cmd_show_stats_compat(msg); | |
d0796d1e RA |
1230 | } |
1231 | ||
1232 | return -EOPNOTSUPP; | |
1233 | } | |
1234 | ||
1235 | static int tipc_nl_compat_recv(struct sk_buff *skb, struct genl_info *info) | |
1236 | { | |
1237 | int err; | |
1238 | int len; | |
1239 | struct tipc_nl_compat_msg msg; | |
1240 | struct nlmsghdr *req_nlh; | |
1241 | struct nlmsghdr *rep_nlh; | |
1242 | struct tipc_genlmsghdr *req_userhdr = info->userhdr; | |
d0796d1e RA |
1243 | |
1244 | memset(&msg, 0, sizeof(msg)); | |
1245 | ||
1246 | req_nlh = (struct nlmsghdr *)skb->data; | |
1247 | msg.req = nlmsg_data(req_nlh) + GENL_HDRLEN + TIPC_GENL_HDRLEN; | |
1248 | msg.cmd = req_userhdr->cmd; | |
c3d6fb85 | 1249 | msg.net = genl_info_net(info); |
619b1745 | 1250 | msg.dst_sk = skb->sk; |
d0796d1e RA |
1251 | |
1252 | if ((msg.cmd & 0xC000) && (!netlink_net_capable(skb, CAP_NET_ADMIN))) { | |
1253 | msg.rep = tipc_get_err_tlv(TIPC_CFG_NOT_NET_ADMIN); | |
1254 | err = -EACCES; | |
1255 | goto send; | |
1256 | } | |
1257 | ||
1258 | len = nlmsg_attrlen(req_nlh, GENL_HDRLEN + TIPC_GENL_HDRLEN); | |
2753ca5d | 1259 | if (!len || !TLV_OK(msg.req, len)) { |
d0796d1e RA |
1260 | msg.rep = tipc_get_err_tlv(TIPC_CFG_NOT_SUPPORTED); |
1261 | err = -EOPNOTSUPP; | |
1262 | goto send; | |
1263 | } | |
1264 | ||
1265 | err = tipc_nl_compat_handle(&msg); | |
b063bc5e | 1266 | if ((err == -EOPNOTSUPP) || (err == -EPERM)) |
d0796d1e RA |
1267 | msg.rep = tipc_get_err_tlv(TIPC_CFG_NOT_SUPPORTED); |
1268 | else if (err == -EINVAL) | |
1269 | msg.rep = tipc_get_err_tlv(TIPC_CFG_TLV_ERROR); | |
1270 | send: | |
1271 | if (!msg.rep) | |
1272 | return err; | |
1273 | ||
1274 | len = nlmsg_total_size(GENL_HDRLEN + TIPC_GENL_HDRLEN); | |
1275 | skb_push(msg.rep, len); | |
1276 | rep_nlh = nlmsg_hdr(msg.rep); | |
1277 | memcpy(rep_nlh, info->nlhdr, len); | |
1278 | rep_nlh->nlmsg_len = msg.rep->len; | |
c3d6fb85 | 1279 | genlmsg_unicast(msg.net, msg.rep, NETLINK_CB(skb).portid); |
d0796d1e RA |
1280 | |
1281 | return err; | |
1282 | } | |
1283 | ||
042a9010 | 1284 | static const struct genl_ops tipc_genl_compat_ops[] = { |
489111e5 JB |
1285 | { |
1286 | .cmd = TIPC_GENL_CMD, | |
1287 | .doit = tipc_nl_compat_recv, | |
1288 | }, | |
1289 | }; | |
1290 | ||
56989f6d | 1291 | static struct genl_family tipc_genl_compat_family __ro_after_init = { |
bfb3e5dd RA |
1292 | .name = TIPC_GENL_NAME, |
1293 | .version = TIPC_GENL_VERSION, | |
1294 | .hdrsize = TIPC_GENL_HDRLEN, | |
1295 | .maxattr = 0, | |
1296 | .netnsok = true, | |
489111e5 JB |
1297 | .module = THIS_MODULE, |
1298 | .ops = tipc_genl_compat_ops, | |
1299 | .n_ops = ARRAY_SIZE(tipc_genl_compat_ops), | |
bfb3e5dd RA |
1300 | }; |
1301 | ||
56989f6d | 1302 | int __init tipc_netlink_compat_start(void) |
bfb3e5dd RA |
1303 | { |
1304 | int res; | |
1305 | ||
489111e5 | 1306 | res = genl_register_family(&tipc_genl_compat_family); |
bfb3e5dd RA |
1307 | if (res) { |
1308 | pr_err("Failed to register legacy compat interface\n"); | |
1309 | return res; | |
1310 | } | |
1311 | ||
1312 | return 0; | |
1313 | } | |
1314 | ||
1315 | void tipc_netlink_compat_stop(void) | |
1316 | { | |
1317 | genl_unregister_family(&tipc_genl_compat_family); | |
1318 | } |