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);
265 err = __tipc_nl_compat_dumpit(cmd, msg, arg);
275 static int __tipc_nl_compat_doit(struct tipc_nl_compat_cmd_doit *cmd,
276 struct tipc_nl_compat_msg *msg)
279 struct sk_buff *doit_buf;
280 struct sk_buff *trans_buf;
281 struct nlattr **attrbuf;
282 struct genl_info info;
284 trans_buf = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
288 attrbuf = kmalloc_array(tipc_genl_family.maxattr + 1,
289 sizeof(struct nlattr *),
296 doit_buf = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
302 memset(&info, 0, sizeof(info));
303 info.attrs = attrbuf;
306 err = (*cmd->transcode)(cmd, trans_buf, msg);
310 err = nla_parse(attrbuf, tipc_genl_family.maxattr,
311 (const struct nlattr *)trans_buf->data,
312 trans_buf->len, NULL, NULL);
316 doit_buf->sk = msg->dst_sk;
318 err = (*cmd->doit)(doit_buf, &info);
326 kfree_skb(trans_buf);
331 static int tipc_nl_compat_doit(struct tipc_nl_compat_cmd_doit *cmd,
332 struct tipc_nl_compat_msg *msg)
336 if (msg->req_type && !TLV_CHECK_TYPE(msg->req, msg->req_type))
339 err = __tipc_nl_compat_doit(cmd, msg);
343 /* The legacy API considered an empty message a success message */
344 msg->rep = tipc_tlv_alloc(0);
351 static int tipc_nl_compat_bearer_dump(struct tipc_nl_compat_msg *msg,
352 struct nlattr **attrs)
354 struct nlattr *bearer[TIPC_NLA_BEARER_MAX + 1];
357 if (!attrs[TIPC_NLA_BEARER])
360 err = nla_parse_nested(bearer, TIPC_NLA_BEARER_MAX,
361 attrs[TIPC_NLA_BEARER], NULL, NULL);
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]));
370 static int tipc_nl_compat_bearer_enable(struct tipc_nl_compat_cmd_doit *cmd,
372 struct tipc_nl_compat_msg *msg)
375 struct nlattr *bearer;
376 struct tipc_bearer_config *b;
378 b = (struct tipc_bearer_config *)TLV_DATA(msg->req);
380 bearer = nla_nest_start(skb, TIPC_NLA_BEARER);
384 if (nla_put_string(skb, TIPC_NLA_BEARER_NAME, b->name))
387 if (nla_put_u32(skb, TIPC_NLA_BEARER_DOMAIN, ntohl(b->disc_domain)))
390 if (ntohl(b->priority) <= TIPC_MAX_LINK_PRI) {
391 prop = nla_nest_start(skb, TIPC_NLA_BEARER_PROP);
394 if (nla_put_u32(skb, TIPC_NLA_PROP_PRIO, ntohl(b->priority)))
396 nla_nest_end(skb, prop);
398 nla_nest_end(skb, bearer);
403 static int tipc_nl_compat_bearer_disable(struct tipc_nl_compat_cmd_doit *cmd,
405 struct tipc_nl_compat_msg *msg)
408 struct nlattr *bearer;
410 name = (char *)TLV_DATA(msg->req);
412 bearer = nla_nest_start(skb, TIPC_NLA_BEARER);
416 if (nla_put_string(skb, TIPC_NLA_BEARER_NAME, name))
419 nla_nest_end(skb, bearer);
424 static inline u32 perc(u32 count, u32 total)
426 return (count * 100 + (total / 2)) / total;
429 static void __fill_bc_link_stat(struct tipc_nl_compat_msg *msg,
430 struct nlattr *prop[], struct nlattr *stats[])
432 tipc_tlv_sprintf(msg->rep, " Window:%u packets\n",
433 nla_get_u32(prop[TIPC_NLA_PROP_WIN]));
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]));
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]));
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]));
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]));
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]));
468 static int tipc_nl_compat_link_stat_dump(struct tipc_nl_compat_msg *msg,
469 struct nlattr **attrs)
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];
477 if (!attrs[TIPC_NLA_LINK])
480 err = nla_parse_nested(link, TIPC_NLA_LINK_MAX, attrs[TIPC_NLA_LINK],
485 if (!link[TIPC_NLA_LINK_PROP])
488 err = nla_parse_nested(prop, TIPC_NLA_PROP_MAX,
489 link[TIPC_NLA_LINK_PROP], NULL, NULL);
493 if (!link[TIPC_NLA_LINK_STATS])
496 err = nla_parse_nested(stats, TIPC_NLA_STATS_MAX,
497 link[TIPC_NLA_LINK_STATS], NULL, NULL);
501 name = (char *)TLV_DATA(msg->req);
502 if (strcmp(name, nla_data(link[TIPC_NLA_LINK_NAME])) != 0)
505 tipc_tlv_sprintf(msg->rep, "\nLink <%s>\n",
506 nla_data(link[TIPC_NLA_LINK_NAME]));
508 if (link[TIPC_NLA_LINK_BROADCAST]) {
509 __fill_bc_link_stat(msg, prop, stats);
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");
518 tipc_tlv_sprintf(msg->rep, " DEFUNCT");
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]));
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]));
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]));
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]));
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]));
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])));
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])));
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]));
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]));
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]));
596 static int tipc_nl_compat_link_dump(struct tipc_nl_compat_msg *msg,
597 struct nlattr **attrs)
599 struct nlattr *link[TIPC_NLA_LINK_MAX + 1];
600 struct tipc_link_info link_info;
603 if (!attrs[TIPC_NLA_LINK])
606 err = nla_parse_nested(link, TIPC_NLA_LINK_MAX, attrs[TIPC_NLA_LINK],
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]));
613 nla_strlcpy(link_info.str, link[TIPC_NLA_LINK_NAME],
616 return tipc_add_tlv(msg->rep, TIPC_TLV_LINK_INFO,
617 &link_info, sizeof(link_info));
620 static int __tipc_add_link_prop(struct sk_buff *skb,
621 struct tipc_nl_compat_msg *msg,
622 struct tipc_link_config *lc)
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));
636 static int tipc_nl_compat_media_set(struct sk_buff *skb,
637 struct tipc_nl_compat_msg *msg)
640 struct nlattr *media;
641 struct tipc_link_config *lc;
643 lc = (struct tipc_link_config *)TLV_DATA(msg->req);
645 media = nla_nest_start(skb, TIPC_NLA_MEDIA);
649 if (nla_put_string(skb, TIPC_NLA_MEDIA_NAME, lc->name))
652 prop = nla_nest_start(skb, TIPC_NLA_MEDIA_PROP);
656 __tipc_add_link_prop(skb, msg, lc);
657 nla_nest_end(skb, prop);
658 nla_nest_end(skb, media);
663 static int tipc_nl_compat_bearer_set(struct sk_buff *skb,
664 struct tipc_nl_compat_msg *msg)
667 struct nlattr *bearer;
668 struct tipc_link_config *lc;
670 lc = (struct tipc_link_config *)TLV_DATA(msg->req);
672 bearer = nla_nest_start(skb, TIPC_NLA_BEARER);
676 if (nla_put_string(skb, TIPC_NLA_BEARER_NAME, lc->name))
679 prop = nla_nest_start(skb, TIPC_NLA_BEARER_PROP);
683 __tipc_add_link_prop(skb, msg, lc);
684 nla_nest_end(skb, prop);
685 nla_nest_end(skb, bearer);
690 static int __tipc_nl_compat_link_set(struct sk_buff *skb,
691 struct tipc_nl_compat_msg *msg)
695 struct tipc_link_config *lc;
697 lc = (struct tipc_link_config *)TLV_DATA(msg->req);
699 link = nla_nest_start(skb, TIPC_NLA_LINK);
703 if (nla_put_string(skb, TIPC_NLA_LINK_NAME, lc->name))
706 prop = nla_nest_start(skb, TIPC_NLA_LINK_PROP);
710 __tipc_add_link_prop(skb, msg, lc);
711 nla_nest_end(skb, prop);
712 nla_nest_end(skb, link);
717 static int tipc_nl_compat_link_set(struct tipc_nl_compat_cmd_doit *cmd,
719 struct tipc_nl_compat_msg *msg)
721 struct tipc_link_config *lc;
722 struct tipc_bearer *bearer;
723 struct tipc_media *media;
725 lc = (struct tipc_link_config *)TLV_DATA(msg->req);
727 media = tipc_media_find(lc->name);
729 cmd->doit = &__tipc_nl_media_set;
730 return tipc_nl_compat_media_set(skb, msg);
733 bearer = tipc_bearer_find(msg->net, lc->name);
735 cmd->doit = &__tipc_nl_bearer_set;
736 return tipc_nl_compat_bearer_set(skb, msg);
739 return __tipc_nl_compat_link_set(skb, msg);
742 static int tipc_nl_compat_link_reset_stats(struct tipc_nl_compat_cmd_doit *cmd,
744 struct tipc_nl_compat_msg *msg)
749 name = (char *)TLV_DATA(msg->req);
751 link = nla_nest_start(skb, TIPC_NLA_LINK);
755 if (nla_put_string(skb, TIPC_NLA_LINK_NAME, name))
758 nla_nest_end(skb, link);
763 static int tipc_nl_compat_name_table_dump_header(struct tipc_nl_compat_msg *msg)
767 struct tipc_name_table_query *ntq;
768 static const char * const header[] = {
775 ntq = (struct tipc_name_table_query *)TLV_DATA(msg->req);
777 depth = ntohl(ntq->depth);
781 for (i = 0; i < depth; i++)
782 tipc_tlv_sprintf(msg->rep, header[i]);
783 tipc_tlv_sprintf(msg->rep, "\n");
788 static int tipc_nl_compat_name_table_dump(struct tipc_nl_compat_msg *msg,
789 struct nlattr **attrs)
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",
800 if (!attrs[TIPC_NLA_NAME_TABLE])
803 err = nla_parse_nested(nt, TIPC_NLA_NAME_TABLE_MAX,
804 attrs[TIPC_NLA_NAME_TABLE], NULL, NULL);
808 if (!nt[TIPC_NLA_NAME_TABLE_PUBL])
811 err = nla_parse_nested(publ, TIPC_NLA_PUBL_MAX,
812 nt[TIPC_NLA_NAME_TABLE_PUBL], NULL, NULL);
816 ntq = (struct tipc_name_table_query *)TLV_DATA(msg->req);
818 depth = ntohl(ntq->depth);
819 type = ntohl(ntq->type);
820 lowbound = ntohl(ntq->lowbound);
821 upbound = ntohl(ntq->upbound);
823 if (!(depth & TIPC_NTQ_ALLTYPES) &&
824 (type != nla_get_u32(publ[TIPC_NLA_PUBL_TYPE])))
826 if (lowbound && (lowbound > nla_get_u32(publ[TIPC_NLA_PUBL_UPPER])))
828 if (upbound && (upbound < nla_get_u32(publ[TIPC_NLA_PUBL_LOWER])))
831 tipc_tlv_sprintf(msg->rep, "%-10u ",
832 nla_get_u32(publ[TIPC_NLA_PUBL_TYPE]));
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]));
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);
852 tipc_tlv_sprintf(msg->rep, "%-10u %s",
853 nla_get_u32(publ[TIPC_NLA_PUBL_KEY]),
854 scope_str[nla_get_u32(publ[TIPC_NLA_PUBL_SCOPE])]);
856 tipc_tlv_sprintf(msg->rep, "\n");
861 static int __tipc_nl_compat_publ_dump(struct tipc_nl_compat_msg *msg,
862 struct nlattr **attrs)
864 u32 type, lower, upper;
865 struct nlattr *publ[TIPC_NLA_PUBL_MAX + 1];
868 if (!attrs[TIPC_NLA_PUBL])
871 err = nla_parse_nested(publ, TIPC_NLA_PUBL_MAX, attrs[TIPC_NLA_PUBL],
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]);
881 tipc_tlv_sprintf(msg->rep, " {%u,%u}", type, lower);
883 tipc_tlv_sprintf(msg->rep, " {%u,%u,%u}", type, lower, upper);
888 static int tipc_nl_compat_publ_dump(struct tipc_nl_compat_msg *msg, u32 sock)
893 struct sk_buff *args;
894 struct tipc_nl_compat_cmd_dump dump;
896 args = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
900 hdr = genlmsg_put(args, 0, 0, &tipc_genl_family, NLM_F_MULTI,
903 nest = nla_nest_start(args, TIPC_NLA_SOCK);
909 if (nla_put_u32(args, TIPC_NLA_SOCK_REF, sock)) {
914 nla_nest_end(args, nest);
915 genlmsg_end(args, hdr);
917 dump.dumpit = tipc_nl_publ_dump;
918 dump.format = __tipc_nl_compat_publ_dump;
920 err = __tipc_nl_compat_dumpit(&dump, msg, args);
927 static int tipc_nl_compat_sk_dump(struct tipc_nl_compat_msg *msg,
928 struct nlattr **attrs)
932 struct nlattr *sock[TIPC_NLA_SOCK_MAX + 1];
934 if (!attrs[TIPC_NLA_SOCK])
937 err = nla_parse_nested(sock, TIPC_NLA_SOCK_MAX, attrs[TIPC_NLA_SOCK],
942 sock_ref = nla_get_u32(sock[TIPC_NLA_SOCK_REF]);
943 tipc_tlv_sprintf(msg->rep, "%u:", sock_ref);
945 if (sock[TIPC_NLA_SOCK_CON]) {
947 struct nlattr *con[TIPC_NLA_CON_MAX + 1];
949 nla_parse_nested(con, TIPC_NLA_CON_MAX,
950 sock[TIPC_NLA_SOCK_CON], NULL, NULL);
952 node = nla_get_u32(con[TIPC_NLA_CON_NODE]);
953 tipc_tlv_sprintf(msg->rep, " connected to <%u.%u.%u:%u>",
957 nla_get_u32(con[TIPC_NLA_CON_SOCK]));
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]));
964 tipc_tlv_sprintf(msg->rep, "\n");
965 } else if (sock[TIPC_NLA_SOCK_HAS_PUBL]) {
966 tipc_tlv_sprintf(msg->rep, " bound to");
968 err = tipc_nl_compat_publ_dump(msg, sock_ref);
972 tipc_tlv_sprintf(msg->rep, "\n");
977 static int tipc_nl_compat_media_dump(struct tipc_nl_compat_msg *msg,
978 struct nlattr **attrs)
980 struct nlattr *media[TIPC_NLA_MEDIA_MAX + 1];
983 if (!attrs[TIPC_NLA_MEDIA])
986 err = nla_parse_nested(media, TIPC_NLA_MEDIA_MAX,
987 attrs[TIPC_NLA_MEDIA], NULL, NULL);
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]));
996 static int tipc_nl_compat_node_dump(struct tipc_nl_compat_msg *msg,
997 struct nlattr **attrs)
999 struct tipc_node_info node_info;
1000 struct nlattr *node[TIPC_NLA_NODE_MAX + 1];
1003 if (!attrs[TIPC_NLA_NODE])
1006 err = nla_parse_nested(node, TIPC_NLA_NODE_MAX, attrs[TIPC_NLA_NODE],
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]));
1014 return tipc_add_tlv(msg->rep, TIPC_TLV_NODE_INFO, &node_info,
1018 static int tipc_nl_compat_net_set(struct tipc_nl_compat_cmd_doit *cmd,
1019 struct sk_buff *skb,
1020 struct tipc_nl_compat_msg *msg)
1025 val = ntohl(*(__be32 *)TLV_DATA(msg->req));
1027 net = nla_nest_start(skb, TIPC_NLA_NET);
1031 if (msg->cmd == TIPC_CMD_SET_NODE_ADDR) {
1032 if (nla_put_u32(skb, TIPC_NLA_NET_ADDR, val))
1034 } else if (msg->cmd == TIPC_CMD_SET_NETID) {
1035 if (nla_put_u32(skb, TIPC_NLA_NET_ID, val))
1038 nla_nest_end(skb, net);
1043 static int tipc_nl_compat_net_dump(struct tipc_nl_compat_msg *msg,
1044 struct nlattr **attrs)
1047 struct nlattr *net[TIPC_NLA_NET_MAX + 1];
1050 if (!attrs[TIPC_NLA_NET])
1053 err = nla_parse_nested(net, TIPC_NLA_NET_MAX, attrs[TIPC_NLA_NET],
1058 id = htonl(nla_get_u32(net[TIPC_NLA_NET_ID]));
1060 return tipc_add_tlv(msg->rep, TIPC_TLV_UNSIGNED, &id, sizeof(id));
1063 static int tipc_cmd_show_stats_compat(struct tipc_nl_compat_msg *msg)
1065 msg->rep = tipc_tlv_alloc(ULTRA_STRING_MAX_LEN);
1069 tipc_tlv_init(msg->rep, TIPC_TLV_ULTRA_STRING);
1070 tipc_tlv_sprintf(msg->rep, "TIPC version " TIPC_MOD_VER "\n");
1075 static int tipc_nl_compat_handle(struct tipc_nl_compat_msg *msg)
1077 struct tipc_nl_compat_cmd_dump dump;
1078 struct tipc_nl_compat_cmd_doit doit;
1080 memset(&dump, 0, sizeof(dump));
1081 memset(&doit, 0, sizeof(doit));
1085 msg->rep = tipc_tlv_alloc(0);
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);
1094 case TIPC_CMD_ENABLE_BEARER:
1095 msg->req_type = TIPC_TLV_BEARER_CONFIG;
1096 doit.doit = __tipc_nl_bearer_enable;
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;
1101 doit.doit = __tipc_nl_bearer_disable;
1102 doit.transcode = tipc_nl_compat_bearer_disable;
1103 return tipc_nl_compat_doit(&doit, msg);
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;
1108 dump.dumpit = tipc_nl_node_dump_link;
1109 dump.format = tipc_nl_compat_link_stat_dump;
1110 return tipc_nl_compat_dumpit(&dump, msg);
1111 case TIPC_CMD_GET_LINKS:
1112 msg->req_type = TIPC_TLV_NET_ADDR;
1113 msg->rep_size = ULTRA_STRING_MAX_LEN;
1114 dump.dumpit = tipc_nl_node_dump_link;
1115 dump.format = tipc_nl_compat_link_dump;
1116 return tipc_nl_compat_dumpit(&dump, msg);
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;
1121 doit.doit = tipc_nl_node_set_link;
1122 doit.transcode = tipc_nl_compat_link_set;
1123 return tipc_nl_compat_doit(&doit, msg);
1124 case TIPC_CMD_RESET_LINK_STATS:
1125 msg->req_type = TIPC_TLV_LINK_NAME;
1126 doit.doit = tipc_nl_node_reset_link_stats;
1127 doit.transcode = tipc_nl_compat_link_reset_stats;
1128 return tipc_nl_compat_doit(&doit, msg);
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);
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);
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);
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);
1153 case TIPC_CMD_SET_NODE_ADDR:
1154 msg->req_type = TIPC_TLV_NET_ADDR;
1155 doit.doit = __tipc_nl_net_set;
1156 doit.transcode = tipc_nl_compat_net_set;
1157 return tipc_nl_compat_doit(&doit, msg);
1158 case TIPC_CMD_SET_NETID:
1159 msg->req_type = TIPC_TLV_UNSIGNED;
1160 doit.doit = __tipc_nl_net_set;
1161 doit.transcode = tipc_nl_compat_net_set;
1162 return tipc_nl_compat_doit(&doit, msg);
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);
1168 case TIPC_CMD_SHOW_STATS:
1169 return tipc_cmd_show_stats_compat(msg);
1175 static int tipc_nl_compat_recv(struct sk_buff *skb, struct genl_info *info)
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;
1184 memset(&msg, 0, sizeof(msg));
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;
1189 msg.net = genl_info_net(info);
1190 msg.dst_sk = skb->sk;
1192 if ((msg.cmd & 0xC000) && (!netlink_net_capable(skb, CAP_NET_ADMIN))) {
1193 msg.rep = tipc_get_err_tlv(TIPC_CFG_NOT_NET_ADMIN);
1198 len = nlmsg_attrlen(req_nlh, GENL_HDRLEN + TIPC_GENL_HDRLEN);
1199 if (len && !TLV_OK(msg.req, len)) {
1200 msg.rep = tipc_get_err_tlv(TIPC_CFG_NOT_SUPPORTED);
1205 err = tipc_nl_compat_handle(&msg);
1206 if ((err == -EOPNOTSUPP) || (err == -EPERM))
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);
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;
1219 genlmsg_unicast(msg.net, msg.rep, NETLINK_CB(skb).portid);
1224 static const struct genl_ops tipc_genl_compat_ops[] = {
1226 .cmd = TIPC_GENL_CMD,
1227 .doit = tipc_nl_compat_recv,
1231 static struct genl_family tipc_genl_compat_family __ro_after_init = {
1232 .name = TIPC_GENL_NAME,
1233 .version = TIPC_GENL_VERSION,
1234 .hdrsize = TIPC_GENL_HDRLEN,
1237 .module = THIS_MODULE,
1238 .ops = tipc_genl_compat_ops,
1239 .n_ops = ARRAY_SIZE(tipc_genl_compat_ops),
1242 int __init tipc_netlink_compat_start(void)
1246 res = genl_register_family(&tipc_genl_compat_family);
1248 pr_err("Failed to register legacy compat interface\n");
1255 void tipc_netlink_compat_stop(void)
1257 genl_unregister_family(&tipc_genl_compat_family);