2 * Copyright (c) 2014, Ericsson AB
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
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.
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.
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.
37 #include "name_table.h"
41 #include <net/genetlink.h>
42 #include <linux/tipc_config.h>
44 /* The legacy API had an artificial message length limit called
45 * ULTRA_STRING_MAX_LEN.
47 #define ULTRA_STRING_MAX_LEN 32768
49 #define TIPC_SKB_MAX TLV_SPACE(ULTRA_STRING_MAX_LEN)
51 #define REPLY_TRUNCATED "<truncated>\n"
53 struct tipc_nl_compat_msg {
64 struct 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);
70 struct 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);
76 static int tipc_skb_tailroom(struct sk_buff *skb)
81 tailroom = skb_tailroom(skb);
82 limit = TIPC_SKB_MAX - skb->len;
90 static int tipc_add_tlv(struct sk_buff *skb, u16 type, void *data, u16 len)
92 struct tlv_desc *tlv = (struct tlv_desc *)skb_tail_pointer(skb);
94 if (tipc_skb_tailroom(skb) < TLV_SPACE(len))
97 skb_put(skb, TLV_SPACE(len));
98 tlv->tlv_type = htons(type);
99 tlv->tlv_len = htons(TLV_LENGTH(len));
101 memcpy(TLV_DATA(tlv), data, len);
106 static void tipc_tlv_init(struct sk_buff *skb, u16 type)
108 struct tlv_desc *tlv = (struct tlv_desc *)skb->data;
111 TLV_SET_TYPE(tlv, type);
112 skb_put(skb, sizeof(struct tlv_desc));
115 static int tipc_tlv_sprintf(struct sk_buff *skb, const char *fmt, ...)
121 struct tlv_desc *tlv;
124 rem = tipc_skb_tailroom(skb);
126 tlv = (struct tlv_desc *)skb->data;
127 len = TLV_GET_LEN(tlv);
128 buf = TLV_DATA(tlv) + len;
131 n = vscnprintf(buf, rem, fmt, args);
134 TLV_SET_LEN(tlv, n + len);
140 static struct sk_buff *tipc_tlv_alloc(int size)
145 size = TLV_SPACE(size);
146 hdr_len = nlmsg_total_size(GENL_HDRLEN + TIPC_GENL_HDRLEN);
148 buf = alloc_skb(hdr_len + size, GFP_KERNEL);
152 skb_reserve(buf, hdr_len);
157 static struct sk_buff *tipc_get_err_tlv(char *str)
159 int str_len = strlen(str) + 1;
162 buf = tipc_tlv_alloc(TLV_SPACE(str_len));
164 tipc_add_tlv(buf, TIPC_TLV_ERROR_STRING, str, str_len);
169 static int __tipc_nl_compat_dumpit(struct tipc_nl_compat_cmd_dump *cmd,
170 struct tipc_nl_compat_msg *msg,
176 struct nlmsghdr *nlmsg;
177 struct netlink_callback cb;
179 memset(&cb, 0, sizeof(cb));
180 cb.nlh = (struct nlmsghdr *)arg->data;
183 buf = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
187 buf->sk = msg->dst_sk;
192 len = (*cmd->dumpit)(buf, &cb);
194 nlmsg_for_each_msg(nlmsg, nlmsg_hdr(buf), len, rem) {
195 struct nlattr **attrs;
197 err = tipc_nlmsg_parse(nlmsg, &attrs);
201 err = (*cmd->format)(msg, attrs);
205 if (tipc_skb_tailroom(msg->rep) <= 1) {
211 skb_reset_tail_pointer(buf);
221 if (err == -EMSGSIZE) {
222 /* The legacy API only considered messages filling
223 * "ULTRA_STRING_MAX_LEN" to be truncated.
225 if ((TIPC_SKB_MAX - msg->rep->len) <= 1) {
226 char *tail = skb_tail_pointer(msg->rep);
229 sprintf(tail - sizeof(REPLY_TRUNCATED) - 1,
239 static int tipc_nl_compat_dumpit(struct tipc_nl_compat_cmd_dump *cmd,
240 struct tipc_nl_compat_msg *msg)
245 if (msg->req_type && !TLV_CHECK_TYPE(msg->req, msg->req_type))
248 msg->rep = tipc_tlv_alloc(msg->rep_size);
253 tipc_tlv_init(msg->rep, msg->rep_type);
258 arg = nlmsg_new(0, GFP_KERNEL);
264 err = __tipc_nl_compat_dumpit(cmd, msg, arg);
273 static int __tipc_nl_compat_doit(struct tipc_nl_compat_cmd_doit *cmd,
274 struct tipc_nl_compat_msg *msg)
277 struct sk_buff *doit_buf;
278 struct sk_buff *trans_buf;
279 struct nlattr **attrbuf;
280 struct genl_info info;
282 trans_buf = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
286 err = (*cmd->transcode)(cmd, trans_buf, msg);
290 attrbuf = kmalloc((tipc_genl_family.maxattr + 1) *
291 sizeof(struct nlattr *), GFP_KERNEL);
297 err = nla_parse(attrbuf, tipc_genl_family.maxattr,
298 (const struct nlattr *)trans_buf->data,
299 trans_buf->len, NULL);
303 doit_buf = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
309 doit_buf->sk = msg->dst_sk;
311 memset(&info, 0, sizeof(info));
312 info.attrs = attrbuf;
314 err = (*cmd->doit)(doit_buf, &info);
320 kfree_skb(trans_buf);
325 static int tipc_nl_compat_doit(struct tipc_nl_compat_cmd_doit *cmd,
326 struct tipc_nl_compat_msg *msg)
330 if (msg->req_type && !TLV_CHECK_TYPE(msg->req, msg->req_type))
333 err = __tipc_nl_compat_doit(cmd, msg);
337 /* The legacy API considered an empty message a success message */
338 msg->rep = tipc_tlv_alloc(0);
345 static int tipc_nl_compat_bearer_dump(struct tipc_nl_compat_msg *msg,
346 struct nlattr **attrs)
348 struct nlattr *bearer[TIPC_NLA_BEARER_MAX + 1];
350 nla_parse_nested(bearer, TIPC_NLA_BEARER_MAX, attrs[TIPC_NLA_BEARER],
353 return tipc_add_tlv(msg->rep, TIPC_TLV_BEARER_NAME,
354 nla_data(bearer[TIPC_NLA_BEARER_NAME]),
355 nla_len(bearer[TIPC_NLA_BEARER_NAME]));
358 static int tipc_nl_compat_bearer_enable(struct tipc_nl_compat_cmd_doit *cmd,
360 struct tipc_nl_compat_msg *msg)
363 struct nlattr *bearer;
364 struct tipc_bearer_config *b;
366 b = (struct tipc_bearer_config *)TLV_DATA(msg->req);
368 bearer = nla_nest_start(skb, TIPC_NLA_BEARER);
372 if (nla_put_string(skb, TIPC_NLA_BEARER_NAME, b->name))
375 if (nla_put_u32(skb, TIPC_NLA_BEARER_DOMAIN, ntohl(b->disc_domain)))
378 if (ntohl(b->priority) <= TIPC_MAX_LINK_PRI) {
379 prop = nla_nest_start(skb, TIPC_NLA_BEARER_PROP);
382 if (nla_put_u32(skb, TIPC_NLA_PROP_PRIO, ntohl(b->priority)))
384 nla_nest_end(skb, prop);
386 nla_nest_end(skb, bearer);
391 static int tipc_nl_compat_bearer_disable(struct tipc_nl_compat_cmd_doit *cmd,
393 struct tipc_nl_compat_msg *msg)
396 struct nlattr *bearer;
398 name = (char *)TLV_DATA(msg->req);
400 bearer = nla_nest_start(skb, TIPC_NLA_BEARER);
404 if (nla_put_string(skb, TIPC_NLA_BEARER_NAME, name))
407 nla_nest_end(skb, bearer);
412 static inline u32 perc(u32 count, u32 total)
414 return (count * 100 + (total / 2)) / total;
417 static void __fill_bc_link_stat(struct tipc_nl_compat_msg *msg,
418 struct nlattr *prop[], struct nlattr *stats[])
420 tipc_tlv_sprintf(msg->rep, " Window:%u packets\n",
421 nla_get_u32(prop[TIPC_NLA_PROP_WIN]));
423 tipc_tlv_sprintf(msg->rep,
424 " RX packets:%u fragments:%u/%u bundles:%u/%u\n",
425 nla_get_u32(stats[TIPC_NLA_STATS_RX_INFO]),
426 nla_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTS]),
427 nla_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTED]),
428 nla_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLES]),
429 nla_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLED]));
431 tipc_tlv_sprintf(msg->rep,
432 " TX packets:%u fragments:%u/%u bundles:%u/%u\n",
433 nla_get_u32(stats[TIPC_NLA_STATS_TX_INFO]),
434 nla_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTS]),
435 nla_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTED]),
436 nla_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLES]),
437 nla_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLED]));
439 tipc_tlv_sprintf(msg->rep, " RX naks:%u defs:%u dups:%u\n",
440 nla_get_u32(stats[TIPC_NLA_STATS_RX_NACKS]),
441 nla_get_u32(stats[TIPC_NLA_STATS_RX_DEFERRED]),
442 nla_get_u32(stats[TIPC_NLA_STATS_DUPLICATES]));
444 tipc_tlv_sprintf(msg->rep, " TX naks:%u acks:%u dups:%u\n",
445 nla_get_u32(stats[TIPC_NLA_STATS_TX_NACKS]),
446 nla_get_u32(stats[TIPC_NLA_STATS_TX_ACKS]),
447 nla_get_u32(stats[TIPC_NLA_STATS_RETRANSMITTED]));
449 tipc_tlv_sprintf(msg->rep,
450 " Congestion link:%u Send queue max:%u avg:%u",
451 nla_get_u32(stats[TIPC_NLA_STATS_LINK_CONGS]),
452 nla_get_u32(stats[TIPC_NLA_STATS_MAX_QUEUE]),
453 nla_get_u32(stats[TIPC_NLA_STATS_AVG_QUEUE]));
456 static int tipc_nl_compat_link_stat_dump(struct tipc_nl_compat_msg *msg,
457 struct nlattr **attrs)
460 struct nlattr *link[TIPC_NLA_LINK_MAX + 1];
461 struct nlattr *prop[TIPC_NLA_PROP_MAX + 1];
462 struct nlattr *stats[TIPC_NLA_STATS_MAX + 1];
464 nla_parse_nested(link, TIPC_NLA_LINK_MAX, attrs[TIPC_NLA_LINK], NULL);
466 nla_parse_nested(prop, TIPC_NLA_PROP_MAX, link[TIPC_NLA_LINK_PROP],
469 nla_parse_nested(stats, TIPC_NLA_STATS_MAX, link[TIPC_NLA_LINK_STATS],
472 name = (char *)TLV_DATA(msg->req);
473 if (strcmp(name, nla_data(link[TIPC_NLA_LINK_NAME])) != 0)
476 tipc_tlv_sprintf(msg->rep, "\nLink <%s>\n",
477 nla_data(link[TIPC_NLA_LINK_NAME]));
479 if (link[TIPC_NLA_LINK_BROADCAST]) {
480 __fill_bc_link_stat(msg, prop, stats);
484 if (link[TIPC_NLA_LINK_ACTIVE])
485 tipc_tlv_sprintf(msg->rep, " ACTIVE");
486 else if (link[TIPC_NLA_LINK_UP])
487 tipc_tlv_sprintf(msg->rep, " STANDBY");
489 tipc_tlv_sprintf(msg->rep, " DEFUNCT");
491 tipc_tlv_sprintf(msg->rep, " MTU:%u Priority:%u",
492 nla_get_u32(link[TIPC_NLA_LINK_MTU]),
493 nla_get_u32(prop[TIPC_NLA_PROP_PRIO]));
495 tipc_tlv_sprintf(msg->rep, " Tolerance:%u ms Window:%u packets\n",
496 nla_get_u32(prop[TIPC_NLA_PROP_TOL]),
497 nla_get_u32(prop[TIPC_NLA_PROP_WIN]));
499 tipc_tlv_sprintf(msg->rep,
500 " RX packets:%u fragments:%u/%u bundles:%u/%u\n",
501 nla_get_u32(link[TIPC_NLA_LINK_RX]) -
502 nla_get_u32(stats[TIPC_NLA_STATS_RX_INFO]),
503 nla_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTS]),
504 nla_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTED]),
505 nla_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLES]),
506 nla_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLED]));
508 tipc_tlv_sprintf(msg->rep,
509 " TX packets:%u fragments:%u/%u bundles:%u/%u\n",
510 nla_get_u32(link[TIPC_NLA_LINK_TX]) -
511 nla_get_u32(stats[TIPC_NLA_STATS_TX_INFO]),
512 nla_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTS]),
513 nla_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTED]),
514 nla_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLES]),
515 nla_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLED]));
517 tipc_tlv_sprintf(msg->rep,
518 " TX profile sample:%u packets average:%u octets\n",
519 nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_CNT]),
520 nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_TOT]) /
521 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT]));
523 tipc_tlv_sprintf(msg->rep,
524 " 0-64:%u%% -256:%u%% -1024:%u%% -4096:%u%% ",
525 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P0]),
526 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])),
527 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P1]),
528 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])),
529 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P2]),
530 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])),
531 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P3]),
532 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])));
534 tipc_tlv_sprintf(msg->rep, "-16384:%u%% -32768:%u%% -66000:%u%%\n",
535 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P4]),
536 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])),
537 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P5]),
538 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])),
539 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P6]),
540 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])));
542 tipc_tlv_sprintf(msg->rep,
543 " RX states:%u probes:%u naks:%u defs:%u dups:%u\n",
544 nla_get_u32(stats[TIPC_NLA_STATS_RX_STATES]),
545 nla_get_u32(stats[TIPC_NLA_STATS_RX_PROBES]),
546 nla_get_u32(stats[TIPC_NLA_STATS_RX_NACKS]),
547 nla_get_u32(stats[TIPC_NLA_STATS_RX_DEFERRED]),
548 nla_get_u32(stats[TIPC_NLA_STATS_DUPLICATES]));
550 tipc_tlv_sprintf(msg->rep,
551 " TX states:%u probes:%u naks:%u acks:%u dups:%u\n",
552 nla_get_u32(stats[TIPC_NLA_STATS_TX_STATES]),
553 nla_get_u32(stats[TIPC_NLA_STATS_TX_PROBES]),
554 nla_get_u32(stats[TIPC_NLA_STATS_TX_NACKS]),
555 nla_get_u32(stats[TIPC_NLA_STATS_TX_ACKS]),
556 nla_get_u32(stats[TIPC_NLA_STATS_RETRANSMITTED]));
558 tipc_tlv_sprintf(msg->rep,
559 " Congestion link:%u Send queue max:%u avg:%u",
560 nla_get_u32(stats[TIPC_NLA_STATS_LINK_CONGS]),
561 nla_get_u32(stats[TIPC_NLA_STATS_MAX_QUEUE]),
562 nla_get_u32(stats[TIPC_NLA_STATS_AVG_QUEUE]));
567 static int tipc_nl_compat_link_dump(struct tipc_nl_compat_msg *msg,
568 struct nlattr **attrs)
570 struct nlattr *link[TIPC_NLA_LINK_MAX + 1];
571 struct tipc_link_info link_info;
573 nla_parse_nested(link, TIPC_NLA_LINK_MAX, attrs[TIPC_NLA_LINK], NULL);
575 link_info.dest = nla_get_flag(link[TIPC_NLA_LINK_DEST]);
576 link_info.up = htonl(nla_get_flag(link[TIPC_NLA_LINK_UP]));
577 strcpy(link_info.str, nla_data(link[TIPC_NLA_LINK_NAME]));
579 return tipc_add_tlv(msg->rep, TIPC_TLV_LINK_INFO,
580 &link_info, sizeof(link_info));
583 static int __tipc_add_link_prop(struct sk_buff *skb,
584 struct tipc_nl_compat_msg *msg,
585 struct tipc_link_config *lc)
588 case TIPC_CMD_SET_LINK_PRI:
589 return nla_put_u32(skb, TIPC_NLA_PROP_PRIO, ntohl(lc->value));
590 case TIPC_CMD_SET_LINK_TOL:
591 return nla_put_u32(skb, TIPC_NLA_PROP_TOL, ntohl(lc->value));
592 case TIPC_CMD_SET_LINK_WINDOW:
593 return nla_put_u32(skb, TIPC_NLA_PROP_WIN, ntohl(lc->value));
599 static int tipc_nl_compat_media_set(struct sk_buff *skb,
600 struct tipc_nl_compat_msg *msg)
603 struct nlattr *media;
604 struct tipc_link_config *lc;
606 lc = (struct tipc_link_config *)TLV_DATA(msg->req);
608 media = nla_nest_start(skb, TIPC_NLA_MEDIA);
612 if (nla_put_string(skb, TIPC_NLA_MEDIA_NAME, lc->name))
615 prop = nla_nest_start(skb, TIPC_NLA_MEDIA_PROP);
619 __tipc_add_link_prop(skb, msg, lc);
620 nla_nest_end(skb, prop);
621 nla_nest_end(skb, media);
626 static int tipc_nl_compat_bearer_set(struct sk_buff *skb,
627 struct tipc_nl_compat_msg *msg)
630 struct nlattr *bearer;
631 struct tipc_link_config *lc;
633 lc = (struct tipc_link_config *)TLV_DATA(msg->req);
635 bearer = nla_nest_start(skb, TIPC_NLA_BEARER);
639 if (nla_put_string(skb, TIPC_NLA_BEARER_NAME, lc->name))
642 prop = nla_nest_start(skb, TIPC_NLA_BEARER_PROP);
646 __tipc_add_link_prop(skb, msg, lc);
647 nla_nest_end(skb, prop);
648 nla_nest_end(skb, bearer);
653 static int __tipc_nl_compat_link_set(struct sk_buff *skb,
654 struct tipc_nl_compat_msg *msg)
658 struct tipc_link_config *lc;
660 lc = (struct tipc_link_config *)TLV_DATA(msg->req);
662 link = nla_nest_start(skb, TIPC_NLA_LINK);
666 if (nla_put_string(skb, TIPC_NLA_LINK_NAME, lc->name))
669 prop = nla_nest_start(skb, TIPC_NLA_LINK_PROP);
673 __tipc_add_link_prop(skb, msg, lc);
674 nla_nest_end(skb, prop);
675 nla_nest_end(skb, link);
680 static int tipc_nl_compat_link_set(struct tipc_nl_compat_cmd_doit *cmd,
682 struct tipc_nl_compat_msg *msg)
684 struct tipc_link_config *lc;
685 struct tipc_bearer *bearer;
686 struct tipc_media *media;
688 lc = (struct tipc_link_config *)TLV_DATA(msg->req);
690 media = tipc_media_find(lc->name);
692 cmd->doit = &tipc_nl_media_set;
693 return tipc_nl_compat_media_set(skb, msg);
696 bearer = tipc_bearer_find(msg->net, lc->name);
698 cmd->doit = &tipc_nl_bearer_set;
699 return tipc_nl_compat_bearer_set(skb, msg);
702 return __tipc_nl_compat_link_set(skb, msg);
705 static int tipc_nl_compat_link_reset_stats(struct tipc_nl_compat_cmd_doit *cmd,
707 struct tipc_nl_compat_msg *msg)
712 name = (char *)TLV_DATA(msg->req);
714 link = nla_nest_start(skb, TIPC_NLA_LINK);
718 if (nla_put_string(skb, TIPC_NLA_LINK_NAME, name))
721 nla_nest_end(skb, link);
726 static int tipc_nl_compat_name_table_dump_header(struct tipc_nl_compat_msg *msg)
730 struct tipc_name_table_query *ntq;
731 static const char * const header[] = {
738 ntq = (struct tipc_name_table_query *)TLV_DATA(msg->req);
740 depth = ntohl(ntq->depth);
744 for (i = 0; i < depth; i++)
745 tipc_tlv_sprintf(msg->rep, header[i]);
746 tipc_tlv_sprintf(msg->rep, "\n");
751 static int tipc_nl_compat_name_table_dump(struct tipc_nl_compat_msg *msg,
752 struct nlattr **attrs)
755 struct tipc_name_table_query *ntq;
756 struct nlattr *nt[TIPC_NLA_NAME_TABLE_MAX + 1];
757 struct nlattr *publ[TIPC_NLA_PUBL_MAX + 1];
758 u32 node, depth, type, lowbound, upbound;
759 static const char * const scope_str[] = {"", " zone", " cluster",
762 nla_parse_nested(nt, TIPC_NLA_NAME_TABLE_MAX,
763 attrs[TIPC_NLA_NAME_TABLE], NULL);
765 nla_parse_nested(publ, TIPC_NLA_PUBL_MAX, nt[TIPC_NLA_NAME_TABLE_PUBL],
768 ntq = (struct tipc_name_table_query *)TLV_DATA(msg->req);
770 depth = ntohl(ntq->depth);
771 type = ntohl(ntq->type);
772 lowbound = ntohl(ntq->lowbound);
773 upbound = ntohl(ntq->upbound);
775 if (!(depth & TIPC_NTQ_ALLTYPES) &&
776 (type != nla_get_u32(publ[TIPC_NLA_PUBL_TYPE])))
778 if (lowbound && (lowbound > nla_get_u32(publ[TIPC_NLA_PUBL_UPPER])))
780 if (upbound && (upbound < nla_get_u32(publ[TIPC_NLA_PUBL_LOWER])))
783 tipc_tlv_sprintf(msg->rep, "%-10u ",
784 nla_get_u32(publ[TIPC_NLA_PUBL_TYPE]));
789 tipc_tlv_sprintf(msg->rep, "%-10u %-10u ",
790 nla_get_u32(publ[TIPC_NLA_PUBL_LOWER]),
791 nla_get_u32(publ[TIPC_NLA_PUBL_UPPER]));
796 node = nla_get_u32(publ[TIPC_NLA_PUBL_NODE]);
797 sprintf(port_str, "<%u.%u.%u:%u>", tipc_zone(node), tipc_cluster(node),
798 tipc_node(node), nla_get_u32(publ[TIPC_NLA_PUBL_REF]));
799 tipc_tlv_sprintf(msg->rep, "%-26s ", port_str);
804 tipc_tlv_sprintf(msg->rep, "%-10u %s",
805 nla_get_u32(publ[TIPC_NLA_PUBL_REF]),
806 scope_str[nla_get_u32(publ[TIPC_NLA_PUBL_SCOPE])]);
808 tipc_tlv_sprintf(msg->rep, "\n");
813 static int __tipc_nl_compat_publ_dump(struct tipc_nl_compat_msg *msg,
814 struct nlattr **attrs)
816 u32 type, lower, upper;
817 struct nlattr *publ[TIPC_NLA_PUBL_MAX + 1];
819 nla_parse_nested(publ, TIPC_NLA_PUBL_MAX, attrs[TIPC_NLA_PUBL], NULL);
821 type = nla_get_u32(publ[TIPC_NLA_PUBL_TYPE]);
822 lower = nla_get_u32(publ[TIPC_NLA_PUBL_LOWER]);
823 upper = nla_get_u32(publ[TIPC_NLA_PUBL_UPPER]);
826 tipc_tlv_sprintf(msg->rep, " {%u,%u}", type, lower);
828 tipc_tlv_sprintf(msg->rep, " {%u,%u,%u}", type, lower, upper);
833 static int tipc_nl_compat_publ_dump(struct tipc_nl_compat_msg *msg, u32 sock)
838 struct sk_buff *args;
839 struct tipc_nl_compat_cmd_dump dump;
841 args = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
845 hdr = genlmsg_put(args, 0, 0, &tipc_genl_family, NLM_F_MULTI,
848 nest = nla_nest_start(args, TIPC_NLA_SOCK);
854 if (nla_put_u32(args, TIPC_NLA_SOCK_REF, sock)) {
859 nla_nest_end(args, nest);
860 genlmsg_end(args, hdr);
862 dump.dumpit = tipc_nl_publ_dump;
863 dump.format = __tipc_nl_compat_publ_dump;
865 err = __tipc_nl_compat_dumpit(&dump, msg, args);
872 static int tipc_nl_compat_sk_dump(struct tipc_nl_compat_msg *msg,
873 struct nlattr **attrs)
877 struct nlattr *sock[TIPC_NLA_SOCK_MAX + 1];
879 nla_parse_nested(sock, TIPC_NLA_SOCK_MAX, attrs[TIPC_NLA_SOCK], NULL);
881 sock_ref = nla_get_u32(sock[TIPC_NLA_SOCK_REF]);
882 tipc_tlv_sprintf(msg->rep, "%u:", sock_ref);
884 if (sock[TIPC_NLA_SOCK_CON]) {
886 struct nlattr *con[TIPC_NLA_CON_MAX + 1];
888 nla_parse_nested(con, TIPC_NLA_CON_MAX, sock[TIPC_NLA_SOCK_CON],
891 node = nla_get_u32(con[TIPC_NLA_CON_NODE]);
892 tipc_tlv_sprintf(msg->rep, " connected to <%u.%u.%u:%u>",
896 nla_get_u32(con[TIPC_NLA_CON_SOCK]));
898 if (con[TIPC_NLA_CON_FLAG])
899 tipc_tlv_sprintf(msg->rep, " via {%u,%u}\n",
900 nla_get_u32(con[TIPC_NLA_CON_TYPE]),
901 nla_get_u32(con[TIPC_NLA_CON_INST]));
903 tipc_tlv_sprintf(msg->rep, "\n");
904 } else if (sock[TIPC_NLA_SOCK_HAS_PUBL]) {
905 tipc_tlv_sprintf(msg->rep, " bound to");
907 err = tipc_nl_compat_publ_dump(msg, sock_ref);
911 tipc_tlv_sprintf(msg->rep, "\n");
916 static int tipc_nl_compat_media_dump(struct tipc_nl_compat_msg *msg,
917 struct nlattr **attrs)
919 struct nlattr *media[TIPC_NLA_MEDIA_MAX + 1];
921 nla_parse_nested(media, TIPC_NLA_MEDIA_MAX, attrs[TIPC_NLA_MEDIA],
924 return tipc_add_tlv(msg->rep, TIPC_TLV_MEDIA_NAME,
925 nla_data(media[TIPC_NLA_MEDIA_NAME]),
926 nla_len(media[TIPC_NLA_MEDIA_NAME]));
929 static int tipc_nl_compat_node_dump(struct tipc_nl_compat_msg *msg,
930 struct nlattr **attrs)
932 struct tipc_node_info node_info;
933 struct nlattr *node[TIPC_NLA_NODE_MAX + 1];
935 nla_parse_nested(node, TIPC_NLA_NODE_MAX, attrs[TIPC_NLA_NODE], NULL);
937 node_info.addr = htonl(nla_get_u32(node[TIPC_NLA_NODE_ADDR]));
938 node_info.up = htonl(nla_get_flag(node[TIPC_NLA_NODE_UP]));
940 return tipc_add_tlv(msg->rep, TIPC_TLV_NODE_INFO, &node_info,
944 static int tipc_nl_compat_net_set(struct tipc_nl_compat_cmd_doit *cmd,
946 struct tipc_nl_compat_msg *msg)
951 val = ntohl(*(__be32 *)TLV_DATA(msg->req));
953 net = nla_nest_start(skb, TIPC_NLA_NET);
957 if (msg->cmd == TIPC_CMD_SET_NODE_ADDR) {
958 if (nla_put_u32(skb, TIPC_NLA_NET_ADDR, val))
960 } else if (msg->cmd == TIPC_CMD_SET_NETID) {
961 if (nla_put_u32(skb, TIPC_NLA_NET_ID, val))
964 nla_nest_end(skb, net);
969 static int tipc_nl_compat_net_dump(struct tipc_nl_compat_msg *msg,
970 struct nlattr **attrs)
973 struct nlattr *net[TIPC_NLA_NET_MAX + 1];
975 nla_parse_nested(net, TIPC_NLA_NET_MAX, attrs[TIPC_NLA_NET], NULL);
976 id = htonl(nla_get_u32(net[TIPC_NLA_NET_ID]));
978 return tipc_add_tlv(msg->rep, TIPC_TLV_UNSIGNED, &id, sizeof(id));
981 static int tipc_cmd_show_stats_compat(struct tipc_nl_compat_msg *msg)
983 msg->rep = tipc_tlv_alloc(ULTRA_STRING_MAX_LEN);
987 tipc_tlv_init(msg->rep, TIPC_TLV_ULTRA_STRING);
988 tipc_tlv_sprintf(msg->rep, "TIPC version " TIPC_MOD_VER "\n");
993 static int tipc_nl_compat_handle(struct tipc_nl_compat_msg *msg)
995 struct tipc_nl_compat_cmd_dump dump;
996 struct tipc_nl_compat_cmd_doit doit;
998 memset(&dump, 0, sizeof(dump));
999 memset(&doit, 0, sizeof(doit));
1003 msg->rep = tipc_tlv_alloc(0);
1007 case TIPC_CMD_GET_BEARER_NAMES:
1008 msg->rep_size = MAX_BEARERS * TLV_SPACE(TIPC_MAX_BEARER_NAME);
1009 dump.dumpit = tipc_nl_bearer_dump;
1010 dump.format = tipc_nl_compat_bearer_dump;
1011 return tipc_nl_compat_dumpit(&dump, msg);
1012 case TIPC_CMD_ENABLE_BEARER:
1013 msg->req_type = TIPC_TLV_BEARER_CONFIG;
1014 doit.doit = tipc_nl_bearer_enable;
1015 doit.transcode = tipc_nl_compat_bearer_enable;
1016 return tipc_nl_compat_doit(&doit, msg);
1017 case TIPC_CMD_DISABLE_BEARER:
1018 msg->req_type = TIPC_TLV_BEARER_NAME;
1019 doit.doit = tipc_nl_bearer_disable;
1020 doit.transcode = tipc_nl_compat_bearer_disable;
1021 return tipc_nl_compat_doit(&doit, msg);
1022 case TIPC_CMD_SHOW_LINK_STATS:
1023 msg->req_type = TIPC_TLV_LINK_NAME;
1024 msg->rep_size = ULTRA_STRING_MAX_LEN;
1025 msg->rep_type = TIPC_TLV_ULTRA_STRING;
1026 dump.dumpit = tipc_nl_node_dump_link;
1027 dump.format = tipc_nl_compat_link_stat_dump;
1028 return tipc_nl_compat_dumpit(&dump, msg);
1029 case TIPC_CMD_GET_LINKS:
1030 msg->req_type = TIPC_TLV_NET_ADDR;
1031 msg->rep_size = ULTRA_STRING_MAX_LEN;
1032 dump.dumpit = tipc_nl_node_dump_link;
1033 dump.format = tipc_nl_compat_link_dump;
1034 return tipc_nl_compat_dumpit(&dump, msg);
1035 case TIPC_CMD_SET_LINK_TOL:
1036 case TIPC_CMD_SET_LINK_PRI:
1037 case TIPC_CMD_SET_LINK_WINDOW:
1038 msg->req_type = TIPC_TLV_LINK_CONFIG;
1039 doit.doit = tipc_nl_node_set_link;
1040 doit.transcode = tipc_nl_compat_link_set;
1041 return tipc_nl_compat_doit(&doit, msg);
1042 case TIPC_CMD_RESET_LINK_STATS:
1043 msg->req_type = TIPC_TLV_LINK_NAME;
1044 doit.doit = tipc_nl_node_reset_link_stats;
1045 doit.transcode = tipc_nl_compat_link_reset_stats;
1046 return tipc_nl_compat_doit(&doit, msg);
1047 case TIPC_CMD_SHOW_NAME_TABLE:
1048 msg->req_type = TIPC_TLV_NAME_TBL_QUERY;
1049 msg->rep_size = ULTRA_STRING_MAX_LEN;
1050 msg->rep_type = TIPC_TLV_ULTRA_STRING;
1051 dump.header = tipc_nl_compat_name_table_dump_header;
1052 dump.dumpit = tipc_nl_name_table_dump;
1053 dump.format = tipc_nl_compat_name_table_dump;
1054 return tipc_nl_compat_dumpit(&dump, msg);
1055 case TIPC_CMD_SHOW_PORTS:
1056 msg->rep_size = ULTRA_STRING_MAX_LEN;
1057 msg->rep_type = TIPC_TLV_ULTRA_STRING;
1058 dump.dumpit = tipc_nl_sk_dump;
1059 dump.format = tipc_nl_compat_sk_dump;
1060 return tipc_nl_compat_dumpit(&dump, msg);
1061 case TIPC_CMD_GET_MEDIA_NAMES:
1062 msg->rep_size = MAX_MEDIA * TLV_SPACE(TIPC_MAX_MEDIA_NAME);
1063 dump.dumpit = tipc_nl_media_dump;
1064 dump.format = tipc_nl_compat_media_dump;
1065 return tipc_nl_compat_dumpit(&dump, msg);
1066 case TIPC_CMD_GET_NODES:
1067 msg->rep_size = ULTRA_STRING_MAX_LEN;
1068 dump.dumpit = tipc_nl_node_dump;
1069 dump.format = tipc_nl_compat_node_dump;
1070 return tipc_nl_compat_dumpit(&dump, msg);
1071 case TIPC_CMD_SET_NODE_ADDR:
1072 msg->req_type = TIPC_TLV_NET_ADDR;
1073 doit.doit = tipc_nl_net_set;
1074 doit.transcode = tipc_nl_compat_net_set;
1075 return tipc_nl_compat_doit(&doit, msg);
1076 case TIPC_CMD_SET_NETID:
1077 msg->req_type = TIPC_TLV_UNSIGNED;
1078 doit.doit = tipc_nl_net_set;
1079 doit.transcode = tipc_nl_compat_net_set;
1080 return tipc_nl_compat_doit(&doit, msg);
1081 case TIPC_CMD_GET_NETID:
1082 msg->rep_size = sizeof(u32);
1083 dump.dumpit = tipc_nl_net_dump;
1084 dump.format = tipc_nl_compat_net_dump;
1085 return tipc_nl_compat_dumpit(&dump, msg);
1086 case TIPC_CMD_SHOW_STATS:
1087 return tipc_cmd_show_stats_compat(msg);
1093 static int tipc_nl_compat_recv(struct sk_buff *skb, struct genl_info *info)
1097 struct tipc_nl_compat_msg msg;
1098 struct nlmsghdr *req_nlh;
1099 struct nlmsghdr *rep_nlh;
1100 struct tipc_genlmsghdr *req_userhdr = info->userhdr;
1102 memset(&msg, 0, sizeof(msg));
1104 req_nlh = (struct nlmsghdr *)skb->data;
1105 msg.req = nlmsg_data(req_nlh) + GENL_HDRLEN + TIPC_GENL_HDRLEN;
1106 msg.cmd = req_userhdr->cmd;
1107 msg.dst_sk = info->dst_sk;
1108 msg.net = genl_info_net(info);
1110 if ((msg.cmd & 0xC000) && (!netlink_net_capable(skb, CAP_NET_ADMIN))) {
1111 msg.rep = tipc_get_err_tlv(TIPC_CFG_NOT_NET_ADMIN);
1116 len = nlmsg_attrlen(req_nlh, GENL_HDRLEN + TIPC_GENL_HDRLEN);
1117 if (len && !TLV_OK(msg.req, len)) {
1118 msg.rep = tipc_get_err_tlv(TIPC_CFG_NOT_SUPPORTED);
1123 err = tipc_nl_compat_handle(&msg);
1124 if ((err == -EOPNOTSUPP) || (err == -EPERM))
1125 msg.rep = tipc_get_err_tlv(TIPC_CFG_NOT_SUPPORTED);
1126 else if (err == -EINVAL)
1127 msg.rep = tipc_get_err_tlv(TIPC_CFG_TLV_ERROR);
1132 len = nlmsg_total_size(GENL_HDRLEN + TIPC_GENL_HDRLEN);
1133 skb_push(msg.rep, len);
1134 rep_nlh = nlmsg_hdr(msg.rep);
1135 memcpy(rep_nlh, info->nlhdr, len);
1136 rep_nlh->nlmsg_len = msg.rep->len;
1137 genlmsg_unicast(msg.net, msg.rep, NETLINK_CB(skb).portid);
1142 static struct genl_family tipc_genl_compat_family = {
1143 .id = GENL_ID_GENERATE,
1144 .name = TIPC_GENL_NAME,
1145 .version = TIPC_GENL_VERSION,
1146 .hdrsize = TIPC_GENL_HDRLEN,
1151 static struct genl_ops tipc_genl_compat_ops[] = {
1153 .cmd = TIPC_GENL_CMD,
1154 .doit = tipc_nl_compat_recv,
1158 int tipc_netlink_compat_start(void)
1162 res = genl_register_family_with_ops(&tipc_genl_compat_family,
1163 tipc_genl_compat_ops);
1165 pr_err("Failed to register legacy compat interface\n");
1172 void tipc_netlink_compat_stop(void)
1174 genl_unregister_family(&tipc_genl_compat_family);