4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2015, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
31 * lnet/lnet/nidstrings.c
33 * Author: Phil Schwan <phil@clusterfs.com>
36 #define DEBUG_SUBSYSTEM S_LNET
38 #include <linux/sunrpc/addr.h>
39 #include <libcfs/libcfs.h>
40 #include <uapi/linux/lnet/nidstr.h>
41 #include <lnet/lib-types.h>
43 /* max value for numeric network address */
44 #define MAX_NUMERIC_VALUE 0xffffffff
46 #define IPSTRING_LENGTH 16
48 /* CAVEAT VENDITOR! Keep the canonical string representation of nets/nids
49 * consistent in all conversion functions. Some code fragments are copied
50 * around for the sake of clarity...
53 /* CAVEAT EMPTOR! Racey temporary buffer allocation!
54 * Choose the number of nidstrings to support the MAXIMUM expected number of
55 * concurrent users. If there are more, the returned string will be volatile.
56 * NB this number must allow for a process to be descheduled for a timeslice
57 * between getting its string and using it.
60 static char libcfs_nidstrings[LNET_NIDSTR_COUNT][LNET_NIDSTR_SIZE];
61 static int libcfs_nidstring_idx;
63 static DEFINE_SPINLOCK(libcfs_nidstring_lock);
65 static struct netstrfns *libcfs_namenum2netstrfns(const char *name);
68 libcfs_next_nidstring(void)
73 spin_lock_irqsave(&libcfs_nidstring_lock, flags);
75 str = libcfs_nidstrings[libcfs_nidstring_idx++];
76 if (libcfs_nidstring_idx == ARRAY_SIZE(libcfs_nidstrings))
77 libcfs_nidstring_idx = 0;
79 spin_unlock_irqrestore(&libcfs_nidstring_lock, flags);
82 EXPORT_SYMBOL(libcfs_next_nidstring);
85 * Nid range list syntax.
88 * <nidlist> :== <nidrange> [ ' ' <nidrange> ]
89 * <nidrange> :== <addrrange> '@' <net>
90 * <addrrange> :== '*' |
93 * <ipaddr_range> :== <cfs_expr_list>.<cfs_expr_list>.<cfs_expr_list>.
95 * <cfs_expr_list> :== <number> |
97 * <expr_list> :== '[' <range_expr> [ ',' <range_expr>] ']'
98 * <range_expr> :== <number> |
99 * <number> '-' <number> |
100 * <number> '-' <number> '/' <number>
101 * <net> :== <netname> | <netname><number>
102 * <netname> :== "lo" | "tcp" | "o2ib" | "cib" | "openib" | "iib" |
103 * "vib" | "ra" | "elan" | "mx" | "ptl"
108 * Structure to represent \<nidrange\> token of the syntax.
110 * One of this is created for each \<net\> parsed.
114 * Link to list of this structures which is built on nid range
117 struct list_head nr_link;
119 * List head for addrrange::ar_link.
121 struct list_head nr_addrranges;
123 * Flag indicating that *@<net> is found.
127 * Pointer to corresponding element of libcfs_netstrfns.
129 struct netstrfns *nr_netstrfns;
131 * Number of network. E.g. 5 if \<net\> is "elan5".
137 * Structure to represent \<addrrange\> token of the syntax.
141 * Link to nidrange::nr_addrranges.
143 struct list_head ar_link;
145 * List head for cfs_expr_list::el_list.
147 struct list_head ar_numaddr_ranges;
151 * Parses \<addrrange\> token on the syntax.
153 * Allocates struct addrrange and links to \a nidrange via
154 * (nidrange::nr_addrranges)
156 * \retval 0 if \a src parses to '*' | \<ipaddr_range\> | \<cfs_expr_list\>
157 * \retval -errno otherwise
160 parse_addrange(const struct cfs_lstr *src, struct nidrange *nidrange)
162 struct addrrange *addrrange;
164 if (src->ls_len == 1 && src->ls_str[0] == '*') {
165 nidrange->nr_all = 1;
169 CFS_ALLOC_PTR(addrrange);
170 if (addrrange == NULL)
172 list_add_tail(&addrrange->ar_link, &nidrange->nr_addrranges);
173 INIT_LIST_HEAD(&addrrange->ar_numaddr_ranges);
175 return nidrange->nr_netstrfns->nf_parse_addrlist(src->ls_str,
177 &addrrange->ar_numaddr_ranges);
181 * Finds or creates struct nidrange.
183 * Checks if \a src is a valid network name, looks for corresponding
184 * nidrange on the ist of nidranges (\a nidlist), creates new struct
185 * nidrange if it is not found.
187 * \retval pointer to struct nidrange matching network specified via \a src
188 * \retval NULL if \a src does not match any network
190 static struct nidrange *
191 add_nidrange(const struct cfs_lstr *src,
192 struct list_head *nidlist)
194 struct netstrfns *nf;
199 if (src->ls_len >= LNET_NIDSTR_SIZE)
202 nf = libcfs_namenum2netstrfns(src->ls_str);
205 endlen = src->ls_len - strlen(nf->nf_name);
207 /* network name only, e.g. "elan" or "tcp" */
210 /* e.g. "elan25" or "tcp23", refuse to parse if
211 * network name is not appended with decimal or
212 * hexadecimal number */
213 if (!cfs_str2num_check(src->ls_str + strlen(nf->nf_name),
214 endlen, &netnum, 0, MAX_NUMERIC_VALUE))
218 list_for_each_entry(nr, nidlist, nr_link) {
219 if (nr->nr_netstrfns != nf)
221 if (nr->nr_netnum != netnum)
229 list_add_tail(&nr->nr_link, nidlist);
230 INIT_LIST_HEAD(&nr->nr_addrranges);
231 nr->nr_netstrfns = nf;
233 nr->nr_netnum = netnum;
239 * Parses \<nidrange\> token of the syntax.
241 * \retval 1 if \a src parses to \<addrrange\> '@' \<net\>
242 * \retval 0 otherwise
245 parse_nidrange(struct cfs_lstr *src, struct list_head *nidlist)
247 struct cfs_lstr addrrange;
251 if (cfs_gettok(src, '@', &addrrange) == 0)
254 if (cfs_gettok(src, '@', &net) == 0 || src->ls_str != NULL)
257 nr = add_nidrange(&net, nidlist);
261 if (parse_addrange(&addrrange, nr) != 0)
270 * Frees addrrange structures of \a list.
272 * For each struct addrrange structure found on \a list it frees
273 * cfs_expr_list list attached to it and frees the addrrange itself.
278 free_addrranges(struct list_head *list)
280 struct addrrange *ar;
282 while ((ar = list_first_entry_or_null(list,
285 cfs_expr_list_free_list(&ar->ar_numaddr_ranges);
286 list_del(&ar->ar_link);
292 * Frees nidrange strutures of \a list.
294 * For each struct nidrange structure found on \a list it frees
295 * addrrange list attached to it and frees the nidrange itself.
300 cfs_free_nidlist(struct list_head *list)
302 struct list_head *pos, *next;
305 list_for_each_safe(pos, next, list) {
306 nr = list_entry(pos, struct nidrange, nr_link);
307 free_addrranges(&nr->nr_addrranges);
312 EXPORT_SYMBOL(cfs_free_nidlist);
315 * Parses nid range list.
317 * Parses with rigorous syntax and overflow checking \a str into
318 * \<nidrange\> [ ' ' \<nidrange\> ], compiles \a str into set of
319 * structures and links that structure to \a nidlist. The resulting
320 * list can be used to match a NID againts set of NIDS defined by \a
324 * \retval 1 on success
325 * \retval 0 otherwise
328 cfs_parse_nidlist(char *str, int len, struct list_head *nidlist)
336 INIT_LIST_HEAD(nidlist);
338 rc = cfs_gettok(&src, ' ', &res);
340 cfs_free_nidlist(nidlist);
343 rc = parse_nidrange(&res, nidlist);
345 cfs_free_nidlist(nidlist);
351 EXPORT_SYMBOL(cfs_parse_nidlist);
354 * Matches a nid (\a nid) against the compiled list of nidranges (\a nidlist).
356 * \see cfs_parse_nidlist()
359 * \retval 0 otherwises
361 int cfs_match_nid(struct lnet_nid *nid, struct list_head *nidlist)
364 struct addrrange *ar;
366 if (!nid_is_nid4(nid))
368 list_for_each_entry(nr, nidlist, nr_link) {
369 if (nr->nr_netstrfns->nf_type != nid->nid_type)
371 if (nr->nr_netnum != be16_to_cpu(nid->nid_num))
375 list_for_each_entry(ar, &nr->nr_addrranges, ar_link)
376 if (nr->nr_netstrfns->nf_match_addr(
377 be32_to_cpu(nid->nid_addr[0]),
378 &ar->ar_numaddr_ranges))
383 EXPORT_SYMBOL(cfs_match_nid);
386 * Print the network part of the nidrange \a nr into the specified \a buffer.
388 * \retval number of characters written
391 cfs_print_network(char *buffer, int count, struct nidrange *nr)
393 struct netstrfns *nf = nr->nr_netstrfns;
395 if (nr->nr_netnum == 0)
396 return scnprintf(buffer, count, "@%s", nf->nf_name);
398 return scnprintf(buffer, count, "@%s%u",
399 nf->nf_name, nr->nr_netnum);
403 * Print a list of addrrange (\a addrranges) into the specified \a buffer.
404 * At max \a count characters can be printed into \a buffer.
406 * \retval number of characters written
409 cfs_print_addrranges(char *buffer, int count, struct list_head *addrranges,
413 struct addrrange *ar;
414 struct netstrfns *nf = nr->nr_netstrfns;
416 list_for_each_entry(ar, addrranges, ar_link) {
418 i += scnprintf(buffer + i, count - i, " ");
419 i += nf->nf_print_addrlist(buffer + i, count - i,
420 &ar->ar_numaddr_ranges);
421 i += cfs_print_network(buffer + i, count - i, nr);
427 * Print a list of nidranges (\a nidlist) into the specified \a buffer.
428 * At max \a count characters can be printed into \a buffer.
429 * Nidranges are separated by a space character.
431 * \retval number of characters written
433 int cfs_print_nidlist(char *buffer, int count, struct list_head *nidlist)
441 list_for_each_entry(nr, nidlist, nr_link) {
443 i += scnprintf(buffer + i, count - i, " ");
445 if (nr->nr_all != 0) {
446 LASSERT(list_empty(&nr->nr_addrranges));
447 i += scnprintf(buffer + i, count - i, "*");
448 i += cfs_print_network(buffer + i, count - i, nr);
450 i += cfs_print_addrranges(buffer + i, count - i,
451 &nr->nr_addrranges, nr);
456 EXPORT_SYMBOL(cfs_print_nidlist);
459 libcfs_lo_str2addr(const char *str, int nob, __u32 *addr)
466 libcfs_ip_addr2str(__u32 addr, char *str, size_t size)
468 snprintf(str, size, "%u.%u.%u.%u",
469 (addr >> 24) & 0xff, (addr >> 16) & 0xff,
470 (addr >> 8) & 0xff, addr & 0xff);
474 libcfs_ip_addr2str_size(const __be32 *addr, size_t asize,
475 char *str, size_t size)
477 struct sockaddr_storage sa = {};
481 sa.ss_family = AF_INET;
482 memcpy(&((struct sockaddr_in *)(&sa))->sin_addr.s_addr,
486 sa.ss_family = AF_INET6;
487 memcpy(&((struct sockaddr_in6 *)(&sa))->sin6_addr.s6_addr,
494 rpc_ntop((struct sockaddr *)&sa, str, size);
497 /* CAVEAT EMPTOR XscanfX
498 * I use "%n" at the end of a sscanf format to detect trailing junk. However
499 * sscanf may return immediately if it sees the terminating '0' in a string, so
500 * I initialise the %n variable to the expected length. If sscanf sets it;
501 * fine, if it doesn't, then the scan ended at the end of the string, which is
504 libcfs_ip_str2addr(const char *str, int nob, __u32 *addr)
510 int n = nob; /* XscanfX */
513 if (sscanf(str, "%u.%u.%u.%u%n", &a, &b, &c, &d, &n) >= 4 &&
515 (a & ~0xff) == 0 && (b & ~0xff) == 0 &&
516 (c & ~0xff) == 0 && (d & ~0xff) == 0) {
517 *addr = ((a<<24)|(b<<16)|(c<<8)|d);
524 libcfs_ip_str2addr_size(const char *str, int nob,
525 __be32 *addr, size_t *alen)
527 struct sockaddr_storage sa;
529 /* Note: 'net' arg to rpc_pton is only needed for link-local
530 * addresses. Such addresses would not work with LNet routing,
531 * so we can assume they aren't used. So it doesn't matter
532 * which net namespace is passed.
534 if (rpc_pton(&init_net, str, nob,
535 (struct sockaddr *)&sa, sizeof(sa)) == 0)
537 if (sa.ss_family == AF_INET6) {
539 &((struct sockaddr_in6 *)(&sa))->sin6_addr.s6_addr,
544 if (sa.ss_family == AF_INET) {
546 &((struct sockaddr_in *)(&sa))->sin_addr.s_addr,
555 /* Used by lnet/config.c so it can't be static */
557 cfs_ip_addr_parse(char *str, int len, struct list_head *list)
559 struct cfs_expr_list *el;
568 while (src.ls_str != NULL) {
571 if (!cfs_gettok(&src, '.', &res)) {
576 rc = cfs_expr_list_parse(res.ls_str, res.ls_len, 0, 255, &el);
580 list_add_tail(&el->el_link, list);
589 cfs_expr_list_free_list(list);
595 * Print the range expression \a re into specified \a buffer.
596 * If \a bracketed is true, expression does not need additional
599 * \retval number of characters written
602 cfs_range_expr_print(char *buffer, int count, struct cfs_range_expr *expr,
612 if (expr->re_lo == expr->re_hi)
613 i = scnprintf(buffer, count, "%u", expr->re_lo);
614 else if (expr->re_stride == 1)
615 i = scnprintf(buffer, count, "%s%u-%u%s",
616 s, expr->re_lo, expr->re_hi, e);
618 i = scnprintf(buffer, count, "%s%u-%u/%u%s",
619 s, expr->re_lo, expr->re_hi,
625 * Print a list of range expressions (\a expr_list) into specified \a buffer.
626 * If the list contains several expressions, separate them with comma
627 * and surround the list with brackets.
629 * \retval number of characters written
632 cfs_expr_list_print(char *buffer, int count, struct cfs_expr_list *expr_list)
634 struct cfs_range_expr *expr;
641 list_for_each_entry(expr, &expr_list->el_exprs, re_link)
645 i += scnprintf(buffer + i, count - i, "[");
647 list_for_each_entry(expr, &expr_list->el_exprs, re_link) {
649 i += scnprintf(buffer + i, count - i, ",");
650 i += cfs_range_expr_print(buffer + i, count - i, expr,
655 i += scnprintf(buffer + i, count - i, "]");
661 libcfs_ip_addr_range_print(char *buffer, int count, struct list_head *list)
664 struct cfs_expr_list *el;
666 list_for_each_entry(el, list, el_link) {
669 i += scnprintf(buffer + i, count - i, ".");
670 i += cfs_expr_list_print(buffer + i, count - i, el);
676 * Matches address (\a addr) against address set encoded in \a list.
678 * \retval 1 if \a addr matches
679 * \retval 0 otherwise
682 cfs_ip_addr_match(__u32 addr, struct list_head *list)
684 struct cfs_expr_list *el;
687 list_for_each_entry_reverse(el, list, el_link) {
688 if (!cfs_expr_list_match(addr & 0xff, el))
698 * Print the network part of the nidrange \a nr into the specified \a buffer.
700 * \retval number of characters written
703 libcfs_decnum_addr2str(__u32 addr, char *str, size_t size)
705 snprintf(str, size, "%u", addr);
709 libcfs_num_str2addr(const char *str, int nob, __u32 *addr)
714 if (sscanf(str, "0x%x%n", addr, &n) >= 1 && n == nob)
718 if (sscanf(str, "0X%x%n", addr, &n) >= 1 && n == nob)
722 if (sscanf(str, "%u%n", addr, &n) >= 1 && n == nob)
729 * Nf_parse_addrlist method for networks using numeric addresses.
731 * Examples of such networks are gm and elan.
733 * \retval 0 if \a str parsed to numeric address
734 * \retval errno otherwise
737 libcfs_num_parse(char *str, int len, struct list_head *list)
739 struct cfs_expr_list *el;
742 rc = cfs_expr_list_parse(str, len, 0, MAX_NUMERIC_VALUE, &el);
744 list_add_tail(&el->el_link, list);
750 libcfs_num_addr_range_print(char *buffer, int count, struct list_head *list)
753 struct cfs_expr_list *el;
755 list_for_each_entry(el, list, el_link) {
757 i += cfs_expr_list_print(buffer + i, count - i, el);
763 * Nf_match_addr method for networks using numeric addresses
766 * \retval 0 otherwise
769 libcfs_num_match(__u32 addr, struct list_head *numaddr)
771 struct cfs_expr_list *el;
773 LASSERT(!list_empty(numaddr));
774 el = list_first_entry(numaddr, struct cfs_expr_list, el_link);
776 return cfs_expr_list_match(addr, el);
779 static struct netstrfns libcfs_netstrfns[] = {
782 .nf_modname = "klolnd",
783 .nf_addr2str = libcfs_decnum_addr2str,
784 .nf_str2addr = libcfs_lo_str2addr,
785 .nf_parse_addrlist = libcfs_num_parse,
786 .nf_print_addrlist = libcfs_num_addr_range_print,
787 .nf_match_addr = libcfs_num_match
789 { .nf_type = SOCKLND,
791 .nf_modname = "ksocklnd",
792 .nf_addr2str = libcfs_ip_addr2str,
793 .nf_addr2str_size = libcfs_ip_addr2str_size,
794 .nf_str2addr = libcfs_ip_str2addr,
795 .nf_str2addr_size = libcfs_ip_str2addr_size,
796 .nf_parse_addrlist = cfs_ip_addr_parse,
797 .nf_print_addrlist = libcfs_ip_addr_range_print,
798 .nf_match_addr = cfs_ip_addr_match
800 { .nf_type = O2IBLND,
802 .nf_modname = "ko2iblnd",
803 .nf_addr2str = libcfs_ip_addr2str,
804 .nf_str2addr = libcfs_ip_str2addr,
805 .nf_parse_addrlist = cfs_ip_addr_parse,
806 .nf_print_addrlist = libcfs_ip_addr_range_print,
807 .nf_match_addr = cfs_ip_addr_match
811 .nf_modname = "kgnilnd",
812 .nf_addr2str = libcfs_decnum_addr2str,
813 .nf_str2addr = libcfs_num_str2addr,
814 .nf_parse_addrlist = libcfs_num_parse,
815 .nf_print_addrlist = libcfs_num_addr_range_print,
816 .nf_match_addr = libcfs_num_match
818 { .nf_type = GNIIPLND,
820 .nf_modname = "kgnilnd",
821 .nf_addr2str = libcfs_ip_addr2str,
822 .nf_str2addr = libcfs_ip_str2addr,
823 .nf_parse_addrlist = cfs_ip_addr_parse,
824 .nf_print_addrlist = libcfs_ip_addr_range_print,
825 .nf_match_addr = cfs_ip_addr_match
827 { .nf_type = PTL4LND,
829 .nf_modname = "kptl4lnd",
830 .nf_addr2str = libcfs_decnum_addr2str,
831 .nf_str2addr = libcfs_num_str2addr,
832 .nf_parse_addrlist = libcfs_num_parse,
833 .nf_print_addrlist = libcfs_num_addr_range_print,
834 .nf_match_addr = libcfs_num_match
839 .nf_modname = "kkfilnd",
840 .nf_addr2str = libcfs_decnum_addr2str,
841 .nf_str2addr = libcfs_num_str2addr,
842 .nf_parse_addrlist = libcfs_num_parse,
843 .nf_print_addrlist = libcfs_num_addr_range_print,
844 .nf_match_addr = libcfs_num_match
848 static const size_t libcfs_nnetstrfns = ARRAY_SIZE(libcfs_netstrfns);
850 static struct netstrfns *
851 type2net_info(__u32 net_type)
855 for (i = 0; i < libcfs_nnetstrfns; i++) {
856 if (libcfs_netstrfns[i].nf_type == net_type)
857 return &libcfs_netstrfns[i];
864 cfs_match_net(__u32 net_id, __u32 net_type, struct list_head *net_num_list)
871 if (net_type != LNET_NETTYP(net_id))
874 net_num = LNET_NETNUM(net_id);
876 /* if there is a net number but the list passed in is empty, then
879 if (!net_num && list_empty(net_num_list))
881 else if (list_empty(net_num_list))
884 if (!libcfs_num_match(net_num, net_num_list))
891 cfs_match_nid_net(struct lnet_nid *nid, __u32 net_type,
892 struct list_head *net_num_list,
893 struct list_head *addr)
896 struct netstrfns *nf;
898 if (!addr || list_empty(addr) || !net_num_list)
901 nf = type2net_info(LNET_NETTYP(LNET_NID_NET(nid)));
905 /* FIXME handle long-addr nid */
906 address = LNET_NIDADDR(lnet_nid_to_nid4(nid));
908 /* if either the address or net number don't match then no match */
909 if (!nf->nf_match_addr(address, addr) ||
910 !cfs_match_net(LNET_NID_NET(nid), net_type, net_num_list))
915 EXPORT_SYMBOL(cfs_match_nid_net);
917 static struct netstrfns *
918 libcfs_lnd2netstrfns(__u32 lnd)
922 for (i = 0; i < libcfs_nnetstrfns; i++)
923 if (lnd == libcfs_netstrfns[i].nf_type)
924 return &libcfs_netstrfns[i];
929 static struct netstrfns *
930 libcfs_namenum2netstrfns(const char *name)
932 struct netstrfns *nf;
935 for (i = 0; i < libcfs_nnetstrfns; i++) {
936 nf = &libcfs_netstrfns[i];
937 if (!strncmp(name, nf->nf_name, strlen(nf->nf_name)))
943 static struct netstrfns *
944 libcfs_name2netstrfns(const char *name)
948 for (i = 0; i < libcfs_nnetstrfns; i++)
949 if (!strcmp(libcfs_netstrfns[i].nf_name, name))
950 return &libcfs_netstrfns[i];
956 libcfs_isknown_lnd(__u32 lnd)
958 return libcfs_lnd2netstrfns(lnd) != NULL;
960 EXPORT_SYMBOL(libcfs_isknown_lnd);
963 libcfs_lnd2modname(__u32 lnd)
965 struct netstrfns *nf = libcfs_lnd2netstrfns(lnd);
967 return (nf == NULL) ? NULL : nf->nf_modname;
969 EXPORT_SYMBOL(libcfs_lnd2modname);
972 libcfs_str2lnd(const char *str)
974 struct netstrfns *nf = libcfs_name2netstrfns(str);
981 EXPORT_SYMBOL(libcfs_str2lnd);
984 libcfs_lnd2str_r(__u32 lnd, char *buf, size_t buf_size)
986 struct netstrfns *nf;
988 nf = libcfs_lnd2netstrfns(lnd);
990 snprintf(buf, buf_size, "?%u?", lnd);
992 snprintf(buf, buf_size, "%s", nf->nf_name);
996 EXPORT_SYMBOL(libcfs_lnd2str_r);
999 libcfs_net2str_r(__u32 net, char *buf, size_t buf_size)
1001 __u32 nnum = LNET_NETNUM(net);
1002 __u32 lnd = LNET_NETTYP(net);
1003 struct netstrfns *nf;
1005 nf = libcfs_lnd2netstrfns(lnd);
1007 snprintf(buf, buf_size, "<%u:%u>", lnd, nnum);
1009 snprintf(buf, buf_size, "%s", nf->nf_name);
1011 snprintf(buf, buf_size, "%s%u", nf->nf_name, nnum);
1015 EXPORT_SYMBOL(libcfs_net2str_r);
1018 libcfs_nid2str_r(lnet_nid_t nid, char *buf, size_t buf_size)
1020 __u32 addr = LNET_NIDADDR(nid);
1021 __u32 net = LNET_NIDNET(nid);
1022 __u32 nnum = LNET_NETNUM(net);
1023 __u32 lnd = LNET_NETTYP(net);
1024 struct netstrfns *nf;
1026 if (nid == LNET_NID_ANY) {
1027 strncpy(buf, "<?>", buf_size);
1028 buf[buf_size - 1] = '\0';
1032 nf = libcfs_lnd2netstrfns(lnd);
1034 snprintf(buf, buf_size, "%x@<%u:%u>", addr, lnd, nnum);
1038 nf->nf_addr2str(addr, buf, buf_size);
1039 addr_len = strlen(buf);
1041 snprintf(buf + addr_len, buf_size - addr_len, "@%s",
1044 snprintf(buf + addr_len, buf_size - addr_len, "@%s%u",
1050 EXPORT_SYMBOL(libcfs_nid2str_r);
1053 libcfs_nidstr_r(const struct lnet_nid *nid, char *buf, size_t buf_size)
1057 struct netstrfns *nf;
1059 if (LNET_NID_IS_ANY(nid)) {
1060 strncpy(buf, "<?>", buf_size);
1061 buf[buf_size - 1] = '\0';
1065 nnum = be16_to_cpu(nid->nid_num);
1066 lnd = nid->nid_type;
1067 nf = libcfs_lnd2netstrfns(lnd);
1071 if (nf->nf_addr2str_size)
1072 nf->nf_addr2str_size(nid->nid_addr, NID_ADDR_BYTES(nid),
1075 nf->nf_addr2str(ntohl(nid->nid_addr[0]), buf, buf_size);
1076 addr_len = strlen(buf);
1078 snprintf(buf + addr_len, buf_size - addr_len, "@%s",
1081 snprintf(buf + addr_len, buf_size - addr_len, "@%s%u",
1085 int words = DIV_ROUND_UP(NID_ADDR_BYTES(nid), 4);
1088 for (i = 0; i < words && i < 4; i++)
1089 l = snprintf(buf+l, buf_size-l, "%s%x",
1090 i ? ":" : "", ntohl(nid->nid_addr[i]));
1091 snprintf(buf+l, buf_size-l, "@<%u:%u>", lnd, nnum);
1096 EXPORT_SYMBOL(libcfs_nidstr_r);
1098 static struct netstrfns *
1099 libcfs_str2net_internal(const char *str, __u32 *net)
1101 struct netstrfns *nf = NULL;
1103 unsigned int netnum;
1106 for (i = 0; i < libcfs_nnetstrfns; i++) {
1107 nf = &libcfs_netstrfns[i];
1108 if (!strncmp(str, nf->nf_name, strlen(nf->nf_name)))
1112 if (i == libcfs_nnetstrfns)
1115 nob = strlen(nf->nf_name);
1117 if (strlen(str) == (unsigned int)nob) {
1120 if (nf->nf_type == LOLND) /* net number not allowed */
1125 if (sscanf(str, "%u%n", &netnum, &i) < 1 ||
1126 i != (int)strlen(str))
1130 *net = LNET_MKNET(nf->nf_type, netnum);
1135 libcfs_str2net(const char *str)
1139 if (libcfs_str2net_internal(str, &net) != NULL)
1142 return LNET_NET_ANY;
1144 EXPORT_SYMBOL(libcfs_str2net);
1147 libcfs_str2nid(const char *str)
1149 const char *sep = strchr(str, '@');
1150 struct netstrfns *nf;
1155 nf = libcfs_str2net_internal(sep + 1, &net);
1157 return LNET_NID_ANY;
1159 sep = str + strlen(str);
1160 net = LNET_MKNET(SOCKLND, 0);
1161 nf = libcfs_lnd2netstrfns(SOCKLND);
1162 LASSERT(nf != NULL);
1165 if (!nf->nf_str2addr(str, (int)(sep - str), &addr))
1166 return LNET_NID_ANY;
1168 return LNET_MKNID(net, addr);
1170 EXPORT_SYMBOL(libcfs_str2nid);
1173 libcfs_strnid(struct lnet_nid *nid, const char *str)
1175 const char *sep = strchr(str, '@');
1176 struct netstrfns *nf;
1180 nf = libcfs_str2net_internal(sep + 1, &net);
1184 sep = str + strlen(str);
1185 net = LNET_MKNET(SOCKLND, 0);
1186 nf = libcfs_lnd2netstrfns(SOCKLND);
1187 LASSERT(nf != NULL);
1190 memset(nid, 0, sizeof(*nid));
1191 nid->nid_type = LNET_NETTYP(net);
1192 nid->nid_num = htons(LNET_NETNUM(net));
1193 if (nf->nf_str2addr_size) {
1196 if (!nf->nf_str2addr_size(str, (int)(sep - str),
1197 nid->nid_addr, &asize))
1199 nid->nid_size = asize - 4;
1203 if (!nf->nf_str2addr(str, (int)(sep - str), &addr))
1205 nid->nid_addr[0] = htonl(addr);
1210 EXPORT_SYMBOL(libcfs_strnid);
1213 libcfs_id2str(struct lnet_process_id id)
1215 char *str = libcfs_next_nidstring();
1217 if (id.pid == LNET_PID_ANY) {
1218 snprintf(str, LNET_NIDSTR_SIZE,
1219 "LNET_PID_ANY-%s", libcfs_nid2str(id.nid));
1223 snprintf(str, LNET_NIDSTR_SIZE, "%s%u-%s",
1224 ((id.pid & LNET_PID_USERFLAG) != 0) ? "U" : "",
1225 (id.pid & ~LNET_PID_USERFLAG), libcfs_nid2str(id.nid));
1228 EXPORT_SYMBOL(libcfs_id2str);
1231 libcfs_idstr(struct lnet_processid *id)
1233 char *str = libcfs_next_nidstring();
1235 if (id->pid == LNET_PID_ANY) {
1236 snprintf(str, LNET_NIDSTR_SIZE,
1237 "LNET_PID_ANY-%s", libcfs_nidstr(&id->nid));
1241 snprintf(str, LNET_NIDSTR_SIZE, "%s%u-%s",
1242 ((id->pid & LNET_PID_USERFLAG) != 0) ? "U" : "",
1243 (id->pid & ~LNET_PID_USERFLAG), libcfs_nidstr(&id->nid));
1246 EXPORT_SYMBOL(libcfs_idstr);
1249 libcfs_strid(struct lnet_processid *id, const char *str)
1251 char *tmp = strchr(str, '-');
1253 id->pid = LNET_PID_LUSTRE;
1255 strncmp("LNET_PID_ANY-", str, tmp - str) != 0) {
1256 char pid[LNET_NIDSTR_SIZE];
1259 strscpy(pid, str, tmp - str);
1260 rc = kstrtou32(pid, 10, &id->pid);
1268 return libcfs_strnid(&id->nid, tmp);
1270 EXPORT_SYMBOL(libcfs_strid);
1273 libcfs_str2anynid(lnet_nid_t *nidp, const char *str)
1275 if (!strcmp(str, "*")) {
1276 *nidp = LNET_NID_ANY;
1280 *nidp = libcfs_str2nid(str);
1281 return *nidp != LNET_NID_ANY;
1283 EXPORT_SYMBOL(libcfs_str2anynid);