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.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2012, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * libcfs/libcfs/nidstrings.c
38 * Author: Phil Schwan <phil@clusterfs.com>
41 #define DEBUG_SUBSYSTEM S_LNET
43 #include <libcfs/libcfs.h>
44 #include <lnet/lnet.h>
46 #ifdef HAVE_GETHOSTBYNAME
51 /* CAVEAT VENDITOR! Keep the canonical string representation of nets/nids
52 * consistent in all conversion functions. Some code fragments are copied
53 * around for the sake of clarity...
56 /* CAVEAT EMPTOR! Racey temporary buffer allocation!
57 * Choose the number of nidstrings to support the MAXIMUM expected number of
58 * concurrent users. If there are more, the returned string will be volatile.
59 * NB this number must allow for a process to be descheduled for a timeslice
60 * between getting its string and using it.
63 static char libcfs_nidstrings[LNET_NIDSTR_COUNT][LNET_NIDSTR_SIZE];
64 static int libcfs_nidstring_idx = 0;
67 static spinlock_t libcfs_nidstring_lock;
69 void libcfs_init_nidstrings (void)
71 spin_lock_init(&libcfs_nidstring_lock);
74 # define NIDSTR_LOCK(f) spin_lock_irqsave(&libcfs_nidstring_lock, f)
75 # define NIDSTR_UNLOCK(f) spin_unlock_irqrestore(&libcfs_nidstring_lock, f)
77 # define NIDSTR_LOCK(f) (f=sizeof(f)) /* avoid set-but-unused warnings */
78 # define NIDSTR_UNLOCK(f) (f=sizeof(f))
82 libcfs_next_nidstring (void)
89 str = libcfs_nidstrings[libcfs_nidstring_idx++];
90 if (libcfs_nidstring_idx ==
91 sizeof(libcfs_nidstrings)/sizeof(libcfs_nidstrings[0]))
92 libcfs_nidstring_idx = 0;
98 static int libcfs_lo_str2addr(const char *str, int nob, __u32 *addr);
99 static void libcfs_ip_addr2str(__u32 addr, char *str);
100 static int libcfs_ip_str2addr(const char *str, int nob, __u32 *addr);
101 static void libcfs_decnum_addr2str(__u32 addr, char *str);
102 static void libcfs_hexnum_addr2str(__u32 addr, char *str);
103 static int libcfs_num_str2addr(const char *str, int nob, __u32 *addr);
104 static int libcfs_num_parse(char *str, int len, struct list_head *list);
105 static int libcfs_num_match(__u32 addr, struct list_head *list);
111 void (*nf_addr2str)(__u32 addr, char *str);
112 int (*nf_str2addr)(const char *str, int nob, __u32 *addr);
113 int (*nf_parse_addrlist)(char *str, int len,
114 struct list_head *list);
115 int (*nf_match_addr)(__u32 addr, struct list_head *list);
118 static struct netstrfns libcfs_netstrfns[] = {
119 {/* .nf_type */ LOLND,
121 /* .nf_modname */ "klolnd",
122 /* .nf_addr2str */ libcfs_decnum_addr2str,
123 /* .nf_str2addr */ libcfs_lo_str2addr,
124 /* .nf_parse_addr*/ libcfs_num_parse,
125 /* .nf_match_addr*/ libcfs_num_match},
126 {/* .nf_type */ SOCKLND,
127 /* .nf_name */ "tcp",
128 /* .nf_modname */ "ksocklnd",
129 /* .nf_addr2str */ libcfs_ip_addr2str,
130 /* .nf_str2addr */ libcfs_ip_str2addr,
131 /* .nf_parse_addrlist*/ cfs_ip_addr_parse,
132 /* .nf_match_addr*/ cfs_ip_addr_match},
133 {/* .nf_type */ O2IBLND,
134 /* .nf_name */ "o2ib",
135 /* .nf_modname */ "ko2iblnd",
136 /* .nf_addr2str */ libcfs_ip_addr2str,
137 /* .nf_str2addr */ libcfs_ip_str2addr,
138 /* .nf_parse_addrlist*/ cfs_ip_addr_parse,
139 /* .nf_match_addr*/ cfs_ip_addr_match},
140 {/* .nf_type */ CIBLND,
141 /* .nf_name */ "cib",
142 /* .nf_modname */ "kciblnd",
143 /* .nf_addr2str */ libcfs_ip_addr2str,
144 /* .nf_str2addr */ libcfs_ip_str2addr,
145 /* .nf_parse_addrlist*/ cfs_ip_addr_parse,
146 /* .nf_match_addr*/ cfs_ip_addr_match},
147 {/* .nf_type */ OPENIBLND,
148 /* .nf_name */ "openib",
149 /* .nf_modname */ "kopeniblnd",
150 /* .nf_addr2str */ libcfs_ip_addr2str,
151 /* .nf_str2addr */ libcfs_ip_str2addr,
152 /* .nf_parse_addrlist*/ cfs_ip_addr_parse,
153 /* .nf_match_addr*/ cfs_ip_addr_match},
154 {/* .nf_type */ IIBLND,
155 /* .nf_name */ "iib",
156 /* .nf_modname */ "kiiblnd",
157 /* .nf_addr2str */ libcfs_ip_addr2str,
158 /* .nf_str2addr */ libcfs_ip_str2addr,
159 /* .nf_parse_addrlist*/ cfs_ip_addr_parse,
160 /* .nf_match_addr*/ cfs_ip_addr_match},
161 {/* .nf_type */ VIBLND,
162 /* .nf_name */ "vib",
163 /* .nf_modname */ "kviblnd",
164 /* .nf_addr2str */ libcfs_ip_addr2str,
165 /* .nf_str2addr */ libcfs_ip_str2addr,
166 /* .nf_parse_addrlist*/ cfs_ip_addr_parse,
167 /* .nf_match_addr*/ cfs_ip_addr_match},
168 {/* .nf_type */ RALND,
170 /* .nf_modname */ "kralnd",
171 /* .nf_addr2str */ libcfs_ip_addr2str,
172 /* .nf_str2addr */ libcfs_ip_str2addr,
173 /* .nf_parse_addrlist*/ cfs_ip_addr_parse,
174 /* .nf_match_addr*/ cfs_ip_addr_match},
175 {/* .nf_type */ QSWLND,
176 /* .nf_name */ "elan",
177 /* .nf_modname */ "kqswlnd",
178 /* .nf_addr2str */ libcfs_decnum_addr2str,
179 /* .nf_str2addr */ libcfs_num_str2addr,
180 /* .nf_parse_addrlist*/ libcfs_num_parse,
181 /* .nf_match_addr*/ libcfs_num_match},
182 {/* .nf_type */ GMLND,
184 /* .nf_modname */ "kgmlnd",
185 /* .nf_addr2str */ libcfs_hexnum_addr2str,
186 /* .nf_str2addr */ libcfs_num_str2addr,
187 /* .nf_parse_addrlist*/ libcfs_num_parse,
188 /* .nf_match_addr*/ libcfs_num_match},
189 {/* .nf_type */ MXLND,
191 /* .nf_modname */ "kmxlnd",
192 /* .nf_addr2str */ libcfs_ip_addr2str,
193 /* .nf_str2addr */ libcfs_ip_str2addr,
194 /* .nf_parse_addrlist*/ cfs_ip_addr_parse,
195 /* .nf_match_addr*/ cfs_ip_addr_match},
196 {/* .nf_type */ PTLLND,
197 /* .nf_name */ "ptl",
198 /* .nf_modname */ "kptllnd",
199 /* .nf_addr2str */ libcfs_decnum_addr2str,
200 /* .nf_str2addr */ libcfs_num_str2addr,
201 /* .nf_parse_addrlist*/ libcfs_num_parse,
202 /* .nf_match_addr*/ libcfs_num_match},
203 {/* .nf_type */ GNILND,
204 /* .nf_name */ "gni",
205 /* .nf_modname */ "kgnilnd",
206 /* .nf_addr2str */ libcfs_decnum_addr2str,
207 /* .nf_str2addr */ libcfs_num_str2addr,
208 /* .nf_parse_addrlist*/ libcfs_num_parse,
209 /* .nf_match_addr*/ libcfs_num_match},
210 {/* .nf_type */ GNIIPLND,
211 /* .nf_name */ "gip",
212 /* .nf_modname */ "kgnilnd",
213 /* .nf_addr2str */ libcfs_ip_addr2str,
214 /* .nf_str2addr */ libcfs_ip_str2addr,
215 /* .nf_parse_addrlist*/ cfs_ip_addr_parse,
216 /* .nf_match_addr*/ cfs_ip_addr_match},
217 /* placeholder for net0 alias. It MUST BE THE LAST ENTRY */
221 const int libcfs_nnetstrfns = sizeof(libcfs_netstrfns)/sizeof(libcfs_netstrfns[0]);
224 libcfs_lo_str2addr(const char *str, int nob, __u32 *addr)
231 libcfs_ip_addr2str(__u32 addr, char *str)
233 #if 0 /* never lookup */
234 #if !defined(__KERNEL__) && defined HAVE_GETHOSTBYNAME
235 __u32 netip = htonl(addr);
236 struct hostent *he = gethostbyaddr(&netip, sizeof(netip), AF_INET);
239 snprintf(str, LNET_NIDSTR_SIZE, "%s", he->h_name);
244 snprintf(str, LNET_NIDSTR_SIZE, "%u.%u.%u.%u",
245 (addr >> 24) & 0xff, (addr >> 16) & 0xff,
246 (addr >> 8) & 0xff, addr & 0xff);
249 /* CAVEAT EMPTOR XscanfX
250 * I use "%n" at the end of a sscanf format to detect trailing junk. However
251 * sscanf may return immediately if it sees the terminating '0' in a string, so
252 * I initialise the %n variable to the expected length. If sscanf sets it;
253 * fine, if it doesn't, then the scan ended at the end of the string, which is
257 libcfs_ip_str2addr(const char *str, int nob, __u32 *addr)
263 int n = nob; /* XscanfX */
266 if (sscanf(str, "%u.%u.%u.%u%n", &a, &b, &c, &d, &n) >= 4 &&
268 (a & ~0xff) == 0 && (b & ~0xff) == 0 &&
269 (c & ~0xff) == 0 && (d & ~0xff) == 0) {
270 *addr = ((a<<24)|(b<<16)|(c<<8)|d);
274 #if !defined(__KERNEL__) && defined HAVE_GETHOSTBYNAME
275 /* known hostname? */
276 if (('a' <= str[0] && str[0] <= 'z') ||
277 ('A' <= str[0] && str[0] <= 'Z')) {
280 LIBCFS_ALLOC(tmp, nob + 1);
284 memcpy(tmp, str, nob);
287 he = gethostbyname(tmp);
289 LIBCFS_FREE(tmp, nob);
292 __u32 ip = *(__u32 *)he->h_addr;
304 libcfs_decnum_addr2str(__u32 addr, char *str)
306 snprintf(str, LNET_NIDSTR_SIZE, "%u", addr);
310 libcfs_hexnum_addr2str(__u32 addr, char *str)
312 snprintf(str, LNET_NIDSTR_SIZE, "0x%x", addr);
316 libcfs_num_str2addr(const char *str, int nob, __u32 *addr)
321 if (sscanf(str, "0x%x%n", addr, &n) >= 1 && n == nob)
325 if (sscanf(str, "0X%x%n", addr, &n) >= 1 && n == nob)
329 if (sscanf(str, "%u%n", addr, &n) >= 1 && n == nob)
336 libcfs_lnd2netstrfns(int lnd)
341 for (i = 0; i < libcfs_nnetstrfns; i++)
342 if (lnd == libcfs_netstrfns[i].nf_type)
343 return &libcfs_netstrfns[i];
349 libcfs_namenum2netstrfns(const char *name)
351 struct netstrfns *nf;
354 for (i = 0; i < libcfs_nnetstrfns; i++) {
355 nf = &libcfs_netstrfns[i];
356 if (nf->nf_type >= 0 &&
357 !strncmp(name, nf->nf_name, strlen(nf->nf_name)))
364 libcfs_name2netstrfns(const char *name)
368 for (i = 0; i < libcfs_nnetstrfns; i++)
369 if (libcfs_netstrfns[i].nf_type >= 0 &&
370 !strcmp(libcfs_netstrfns[i].nf_name, name))
371 return &libcfs_netstrfns[i];
377 libcfs_isknown_lnd(int type)
379 return libcfs_lnd2netstrfns(type) != NULL;
383 libcfs_lnd2modname(int lnd)
385 struct netstrfns *nf = libcfs_lnd2netstrfns(lnd);
387 return (nf == NULL) ? NULL : nf->nf_modname;
391 libcfs_lnd2str(int lnd)
394 struct netstrfns *nf = libcfs_lnd2netstrfns(lnd);
399 str = libcfs_next_nidstring();
400 snprintf(str, LNET_NIDSTR_SIZE, "?%u?", lnd);
405 libcfs_str2lnd(const char *str)
407 struct netstrfns *nf = libcfs_name2netstrfns(str);
416 libcfs_net2str(__u32 net)
418 int lnd = LNET_NETTYP(net);
419 int num = LNET_NETNUM(net);
420 struct netstrfns *nf = libcfs_lnd2netstrfns(lnd);
421 char *str = libcfs_next_nidstring();
424 snprintf(str, LNET_NIDSTR_SIZE, "<%u:%u>", lnd, num);
426 snprintf(str, LNET_NIDSTR_SIZE, "%s", nf->nf_name);
428 snprintf(str, LNET_NIDSTR_SIZE, "%s%u", nf->nf_name, num);
434 libcfs_nid2str(lnet_nid_t nid)
436 __u32 addr = LNET_NIDADDR(nid);
437 __u32 net = LNET_NIDNET(nid);
438 int lnd = LNET_NETTYP(net);
439 int nnum = LNET_NETNUM(net);
440 struct netstrfns *nf;
444 if (nid == LNET_NID_ANY)
447 nf = libcfs_lnd2netstrfns(lnd);
448 str = libcfs_next_nidstring();
451 snprintf(str, LNET_NIDSTR_SIZE, "%x@<%u:%u>", addr, lnd, nnum);
453 nf->nf_addr2str(addr, str);
456 snprintf(str + nob, LNET_NIDSTR_SIZE - nob, "@%s",
459 snprintf(str + nob, LNET_NIDSTR_SIZE - nob, "@%s%u",
466 static struct netstrfns *
467 libcfs_str2net_internal(const char *str, __u32 *net)
469 struct netstrfns *nf = NULL;
474 for (i = 0; i < libcfs_nnetstrfns; i++) {
475 nf = &libcfs_netstrfns[i];
476 if (nf->nf_type >= 0 &&
477 !strncmp(str, nf->nf_name, strlen(nf->nf_name)))
481 if (i == libcfs_nnetstrfns)
484 nob = strlen(nf->nf_name);
486 if (strlen(str) == (unsigned int)nob) {
489 if (nf->nf_type == LOLND) /* net number not allowed */
494 if (sscanf(str, "%u%n", &netnum, &i) < 1 ||
495 i != (int)strlen(str))
499 *net = LNET_MKNET(nf->nf_type, netnum);
504 libcfs_str2net(const char *str)
508 if (libcfs_str2net_internal(str, &net) != NULL)
511 return LNET_NIDNET(LNET_NID_ANY);
515 libcfs_str2nid(const char *str)
517 const char *sep = strchr(str, '@');
518 struct netstrfns *nf;
523 nf = libcfs_str2net_internal(sep + 1, &net);
527 sep = str + strlen(str);
528 net = LNET_MKNET(SOCKLND, 0);
529 nf = libcfs_lnd2netstrfns(SOCKLND);
530 LASSERT (nf != NULL);
533 if (!nf->nf_str2addr(str, (int)(sep - str), &addr))
536 return LNET_MKNID(net, addr);
540 libcfs_id2str(lnet_process_id_t id)
542 char *str = libcfs_next_nidstring();
544 if (id.pid == LNET_PID_ANY) {
545 snprintf(str, LNET_NIDSTR_SIZE,
546 "LNET_PID_ANY-%s", libcfs_nid2str(id.nid));
550 snprintf(str, LNET_NIDSTR_SIZE, "%s%u-%s",
551 ((id.pid & LNET_PID_USERFLAG) != 0) ? "U" : "",
552 (id.pid & ~LNET_PID_USERFLAG), libcfs_nid2str(id.nid));
557 libcfs_str2anynid(lnet_nid_t *nidp, const char *str)
559 if (!strcmp(str, "*")) {
560 *nidp = LNET_NID_ANY;
564 *nidp = libcfs_str2nid(str);
565 return *nidp != LNET_NID_ANY;
569 * Nid range list syntax.
572 * <nidlist> :== <nidrange> [ ' ' <nidrange> ]
573 * <nidrange> :== <addrrange> '@' <net>
574 * <addrrange> :== '*' |
577 * <ipaddr_range> :== <cfs_expr_list>.<cfs_expr_list>.<cfs_expr_list>.
579 * <cfs_expr_list> :== <number> |
581 * <expr_list> :== '[' <range_expr> [ ',' <range_expr>] ']'
582 * <range_expr> :== <number> |
583 * <number> '-' <number> |
584 * <number> '-' <number> '/' <number>
585 * <net> :== <netname> | <netname><number>
586 * <netname> :== "lo" | "tcp" | "o2ib" | "cib" | "openib" | "iib" |
587 * "vib" | "ra" | "elan" | "mx" | "ptl"
592 * Structure to represent \<nidrange\> token of the syntax.
594 * One of this is created for each \<net\> parsed.
598 * Link to list of this structures which is built on nid range
601 struct list_head nr_link;
603 * List head for addrrange::ar_link.
605 struct list_head nr_addrranges;
607 * Flag indicating that *@<net> is found.
611 * Pointer to corresponding element of libcfs_netstrfns.
613 struct netstrfns *nr_netstrfns;
615 * Number of network. E.g. 5 if \<net\> is "elan5".
621 * Structure to represent \<addrrange\> token of the syntax.
625 * Link to nidrange::nr_addrranges.
627 struct list_head ar_link;
629 * List head for cfs_expr_list::el_list.
631 struct list_head ar_numaddr_ranges;
635 * Nf_parse_addrlist method for networks using numeric addresses.
637 * Examples of such networks are gm and elan.
639 * \retval 0 if \a str parsed to numeric address
640 * \retval errno otherwise
643 libcfs_num_parse(char *str, int len, struct list_head *list)
645 struct cfs_expr_list *el;
648 rc = cfs_expr_list_parse(str, len, 0, MAX_NUMERIC_VALUE, &el);
650 list_add_tail(&el->el_link, list);
656 * Parses \<addrrange\> token on the syntax.
658 * Allocates struct addrrange and links to \a nidrange via
659 * (nidrange::nr_addrranges)
661 * \retval 1 if \a src parses to '*' | \<ipaddr_range\> | \<cfs_expr_list\>
662 * \retval 0 otherwise
665 parse_addrange(const struct cfs_lstr *src, struct nidrange *nidrange)
667 struct addrrange *addrrange;
669 if (src->ls_len == 1 && src->ls_str[0] == '*') {
670 nidrange->nr_all = 1;
674 LIBCFS_ALLOC(addrrange, sizeof(struct addrrange));
675 if (addrrange == NULL)
677 list_add_tail(&addrrange->ar_link, &nidrange->nr_addrranges);
678 INIT_LIST_HEAD(&addrrange->ar_numaddr_ranges);
680 return nidrange->nr_netstrfns->nf_parse_addrlist(src->ls_str,
682 &addrrange->ar_numaddr_ranges);
686 * Finds or creates struct nidrange.
688 * Checks if \a src is a valid network name, looks for corresponding
689 * nidrange on the ist of nidranges (\a nidlist), creates new struct
690 * nidrange if it is not found.
692 * \retval pointer to struct nidrange matching network specified via \a src
693 * \retval NULL if \a src does not match any network
695 static struct nidrange *
696 add_nidrange(const struct cfs_lstr *src,
697 struct list_head *nidlist)
699 struct netstrfns *nf;
704 if (src->ls_len >= LNET_NIDSTR_SIZE)
707 nf = libcfs_namenum2netstrfns(src->ls_str);
710 endlen = src->ls_len - strlen(nf->nf_name);
712 /* network name only, e.g. "elan" or "tcp" */
715 /* e.g. "elan25" or "tcp23", refuse to parse if
716 * network name is not appended with decimal or
717 * hexadecimal number */
718 if (!cfs_str2num_check(src->ls_str + strlen(nf->nf_name),
719 endlen, &netnum, 0, MAX_NUMERIC_VALUE))
723 list_for_each_entry(nr, nidlist, nr_link) {
724 if (nr->nr_netstrfns != nf)
726 if (nr->nr_netnum != netnum)
731 LIBCFS_ALLOC(nr, sizeof(struct nidrange));
734 list_add_tail(&nr->nr_link, nidlist);
735 INIT_LIST_HEAD(&nr->nr_addrranges);
736 nr->nr_netstrfns = nf;
738 nr->nr_netnum = netnum;
744 * Parses \<nidrange\> token of the syntax.
746 * \retval 1 if \a src parses to \<addrrange\> '@' \<net\>
747 * \retval 0 otherwise
750 parse_nidrange(struct cfs_lstr *src, struct list_head *nidlist)
752 struct cfs_lstr addrrange;
758 if (cfs_gettok(src, '@', &addrrange) == 0)
761 if (cfs_gettok(src, '@', &net) == 0 || src->ls_str != NULL)
764 nr = add_nidrange(&net, nidlist);
768 if (parse_addrange(&addrrange, nr) != 0)
773 CWARN("can't parse nidrange: \"%.*s\"\n", tmp.ls_len, tmp.ls_str);
778 * Frees addrrange structures of \a list.
780 * For each struct addrrange structure found on \a list it frees
781 * cfs_expr_list list attached to it and frees the addrrange itself.
786 free_addrranges(struct list_head *list)
788 while (!list_empty(list)) {
789 struct addrrange *ar;
791 ar = list_entry(list->next, struct addrrange, ar_link);
793 cfs_expr_list_free_list(&ar->ar_numaddr_ranges);
794 list_del(&ar->ar_link);
795 LIBCFS_FREE(ar, sizeof(struct addrrange));
800 * Frees nidrange strutures of \a list.
802 * For each struct nidrange structure found on \a list it frees
803 * addrrange list attached to it and frees the nidrange itself.
808 cfs_free_nidlist(struct list_head *list)
810 struct list_head *pos, *next;
813 list_for_each_safe(pos, next, list) {
814 nr = list_entry(pos, struct nidrange, nr_link);
815 free_addrranges(&nr->nr_addrranges);
817 LIBCFS_FREE(nr, sizeof(struct nidrange));
822 * Parses nid range list.
824 * Parses with rigorous syntax and overflow checking \a str into
825 * \<nidrange\> [ ' ' \<nidrange\> ], compiles \a str into set of
826 * structures and links that structure to \a nidlist. The resulting
827 * list can be used to match a NID againts set of NIDS defined by \a
831 * \retval 1 on success
832 * \retval 0 otherwise
835 cfs_parse_nidlist(char *str, int len, struct list_head *nidlist)
844 INIT_LIST_HEAD(nidlist);
846 rc = cfs_gettok(&src, ' ', &res);
848 cfs_free_nidlist(nidlist);
851 rc = parse_nidrange(&res, nidlist);
853 cfs_free_nidlist(nidlist);
861 * Nf_match_addr method for networks using numeric addresses
864 * \retval 0 otherwise
867 libcfs_num_match(__u32 addr, struct list_head *numaddr)
869 struct cfs_expr_list *el;
871 LASSERT(!list_empty(numaddr));
872 el = list_entry(numaddr->next, struct cfs_expr_list, el_link);
874 return cfs_expr_list_match(addr, el);
878 * Matches a nid (\a nid) against the compiled list of nidranges (\a nidlist).
880 * \see cfs_parse_nidlist()
883 * \retval 0 otherwises
885 int cfs_match_nid(lnet_nid_t nid, struct list_head *nidlist)
888 struct addrrange *ar;
891 list_for_each_entry(nr, nidlist, nr_link) {
892 if (nr->nr_netstrfns->nf_type != LNET_NETTYP(LNET_NIDNET(nid)))
894 if (nr->nr_netnum != LNET_NETNUM(LNET_NIDNET(nid)))
898 list_for_each_entry(ar, &nr->nr_addrranges, ar_link)
899 if (nr->nr_netstrfns->nf_match_addr(LNET_NIDADDR(nid),
900 &ar->ar_numaddr_ranges))
908 EXPORT_SYMBOL(libcfs_isknown_lnd);
909 EXPORT_SYMBOL(libcfs_lnd2modname);
910 EXPORT_SYMBOL(libcfs_lnd2str);
911 EXPORT_SYMBOL(libcfs_str2lnd);
912 EXPORT_SYMBOL(libcfs_net2str);
913 EXPORT_SYMBOL(libcfs_nid2str);
914 EXPORT_SYMBOL(libcfs_str2net);
915 EXPORT_SYMBOL(libcfs_str2nid);
916 EXPORT_SYMBOL(libcfs_id2str);
917 EXPORT_SYMBOL(libcfs_str2anynid);
918 EXPORT_SYMBOL(cfs_free_nidlist);
919 EXPORT_SYMBOL(cfs_parse_nidlist);
920 EXPORT_SYMBOL(cfs_match_nid);