1 #include <linux/types.h>
2 #include <linux/sched.h>
3 #include <linux/module.h>
4 #include <linux/sunrpc/types.h>
5 #include <linux/sunrpc/xdr.h>
6 #include <linux/sunrpc/svcsock.h>
7 #include <linux/sunrpc/svcauth.h>
8 #include <linux/sunrpc/gss_api.h>
10 #include <linux/seq_file.h>
11 #include <linux/hash.h>
12 #include <linux/string.h>
13 #include <linux/slab.h>
16 #include <linux/kernel.h>
17 #define RPCDBG_FACILITY RPCDBG_AUTH
19 #include <linux/sunrpc/clnt.h>
24 * AUTHUNIX and AUTHNULL credentials are both handled here.
25 * AUTHNULL is treated just like AUTHUNIX except that the uid/gid
26 * are always nobody (-2). i.e. we do the same IP address checks for
27 * AUTHNULL as for AUTHUNIX, and that is done here.
34 /* other stuff later */
37 extern struct auth_ops svcauth_unix;
39 struct auth_domain *unix_domain_find(char *name)
41 struct auth_domain *rv;
42 struct unix_domain *new = NULL;
44 rv = auth_domain_lookup(name, NULL);
47 if (new && rv != &new->h)
48 auth_domain_put(&new->h);
50 if (rv->flavour != &svcauth_unix) {
57 new = kmalloc(sizeof(*new), GFP_KERNEL);
60 kref_init(&new->h.ref);
61 new->h.name = kstrdup(name, GFP_KERNEL);
62 if (new->h.name == NULL) {
66 new->h.flavour = &svcauth_unix;
67 new->addr_changes = 0;
68 rv = auth_domain_lookup(name, &new->h);
71 EXPORT_SYMBOL_GPL(unix_domain_find);
73 static void svcauth_unix_domain_release(struct auth_domain *dom)
75 struct unix_domain *ud = container_of(dom, struct unix_domain, h);
82 /**************************************************
83 * cache for IP address to unix_domain
84 * as needed by AUTH_UNIX
87 #define IP_HASHMAX (1<<IP_HASHBITS)
88 #define IP_HASHMASK (IP_HASHMAX-1)
92 char m_class[8]; /* e.g. "nfsd" */
93 struct in6_addr m_addr;
94 struct unix_domain *m_client;
98 static void ip_map_put(struct kref *kref)
100 struct cache_head *item = container_of(kref, struct cache_head, ref);
101 struct ip_map *im = container_of(item, struct ip_map,h);
103 if (test_bit(CACHE_VALID, &item->flags) &&
104 !test_bit(CACHE_NEGATIVE, &item->flags))
105 auth_domain_put(&im->m_client->h);
110 /* hash_long on a 64 bit machine is currently REALLY BAD for
111 * IP addresses in reverse-endian (i.e. on a little-endian machine).
112 * So use a trivial but reliable hash instead
114 static inline int hash_ip(__be32 ip)
116 int hash = (__force u32)ip ^ ((__force u32)ip>>16);
117 return (hash ^ (hash>>8)) & 0xff;
120 static inline int hash_ip6(struct in6_addr ip)
122 return (hash_ip(ip.s6_addr32[0]) ^
123 hash_ip(ip.s6_addr32[1]) ^
124 hash_ip(ip.s6_addr32[2]) ^
125 hash_ip(ip.s6_addr32[3]));
127 static int ip_map_match(struct cache_head *corig, struct cache_head *cnew)
129 struct ip_map *orig = container_of(corig, struct ip_map, h);
130 struct ip_map *new = container_of(cnew, struct ip_map, h);
131 return strcmp(orig->m_class, new->m_class) == 0 &&
132 ipv6_addr_equal(&orig->m_addr, &new->m_addr);
134 static void ip_map_init(struct cache_head *cnew, struct cache_head *citem)
136 struct ip_map *new = container_of(cnew, struct ip_map, h);
137 struct ip_map *item = container_of(citem, struct ip_map, h);
139 strcpy(new->m_class, item->m_class);
140 ipv6_addr_copy(&new->m_addr, &item->m_addr);
142 static void update(struct cache_head *cnew, struct cache_head *citem)
144 struct ip_map *new = container_of(cnew, struct ip_map, h);
145 struct ip_map *item = container_of(citem, struct ip_map, h);
147 kref_get(&item->m_client->h.ref);
148 new->m_client = item->m_client;
149 new->m_add_change = item->m_add_change;
151 static struct cache_head *ip_map_alloc(void)
153 struct ip_map *i = kmalloc(sizeof(*i), GFP_KERNEL);
160 static void ip_map_request(struct cache_detail *cd,
161 struct cache_head *h,
162 char **bpp, int *blen)
165 struct ip_map *im = container_of(h, struct ip_map, h);
167 if (ipv6_addr_v4mapped(&(im->m_addr))) {
168 snprintf(text_addr, 20, "%pI4", &im->m_addr.s6_addr32[3]);
170 snprintf(text_addr, 40, "%pI6", &im->m_addr);
172 qword_add(bpp, blen, im->m_class);
173 qword_add(bpp, blen, text_addr);
177 static int ip_map_upcall(struct cache_detail *cd, struct cache_head *h)
179 return sunrpc_cache_pipe_upcall(cd, h, ip_map_request);
182 static struct ip_map *__ip_map_lookup(struct cache_detail *cd, char *class, struct in6_addr *addr);
183 static int __ip_map_update(struct cache_detail *cd, struct ip_map *ipm, struct unix_domain *udom, time_t expiry);
185 static int ip_map_parse(struct cache_detail *cd,
186 char *mesg, int mlen)
188 /* class ipaddress [domainname] */
189 /* should be safe just to use the start of the input buffer
196 struct sockaddr_in s4;
197 struct sockaddr_in6 s6;
199 struct sockaddr_in6 sin6;
203 struct auth_domain *dom;
206 if (mesg[mlen-1] != '\n')
211 len = qword_get(&mesg, class, sizeof(class));
212 if (len <= 0) return -EINVAL;
215 len = qword_get(&mesg, buf, mlen);
216 if (len <= 0) return -EINVAL;
218 if (rpc_pton(buf, len, &address.sa, sizeof(address)) == 0)
220 switch (address.sa.sa_family) {
222 /* Form a mapped IPv4 address in sin6 */
223 sin6.sin6_family = AF_INET6;
224 ipv6_addr_set_v4mapped(address.s4.sin_addr.s_addr,
227 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
229 memcpy(&sin6, &address.s6, sizeof(sin6));
236 expiry = get_expiry(&mesg);
240 /* domainname, or empty for NEGATIVE */
241 len = qword_get(&mesg, buf, mlen);
242 if (len < 0) return -EINVAL;
245 dom = unix_domain_find(buf);
251 /* IPv6 scope IDs are ignored for now */
252 ipmp = __ip_map_lookup(cd, class, &sin6.sin6_addr);
254 err = __ip_map_update(cd, ipmp,
255 container_of(dom, struct unix_domain, h),
261 auth_domain_put(dom);
267 static int ip_map_show(struct seq_file *m,
268 struct cache_detail *cd,
269 struct cache_head *h)
272 struct in6_addr addr;
273 char *dom = "-no-domain-";
276 seq_puts(m, "#class IP domain\n");
279 im = container_of(h, struct ip_map, h);
280 /* class addr domain */
281 ipv6_addr_copy(&addr, &im->m_addr);
283 if (test_bit(CACHE_VALID, &h->flags) &&
284 !test_bit(CACHE_NEGATIVE, &h->flags))
285 dom = im->m_client->h.name;
287 if (ipv6_addr_v4mapped(&addr)) {
288 seq_printf(m, "%s %pI4 %s\n",
289 im->m_class, &addr.s6_addr32[3], dom);
291 seq_printf(m, "%s %pI6 %s\n", im->m_class, &addr, dom);
297 static struct ip_map *__ip_map_lookup(struct cache_detail *cd, char *class,
298 struct in6_addr *addr)
301 struct cache_head *ch;
303 strcpy(ip.m_class, class);
304 ipv6_addr_copy(&ip.m_addr, addr);
305 ch = sunrpc_cache_lookup(cd, &ip.h,
306 hash_str(class, IP_HASHBITS) ^
310 return container_of(ch, struct ip_map, h);
315 static inline struct ip_map *ip_map_lookup(struct net *net, char *class,
316 struct in6_addr *addr)
318 struct sunrpc_net *sn;
320 sn = net_generic(net, sunrpc_net_id);
321 return __ip_map_lookup(sn->ip_map_cache, class, addr);
324 static int __ip_map_update(struct cache_detail *cd, struct ip_map *ipm,
325 struct unix_domain *udom, time_t expiry)
328 struct cache_head *ch;
333 set_bit(CACHE_NEGATIVE, &ip.h.flags);
335 ip.m_add_change = udom->addr_changes;
336 /* if this is from the legacy set_client system call,
337 * we need m_add_change to be one higher
342 ip.h.expiry_time = expiry;
343 ch = sunrpc_cache_update(cd, &ip.h, &ipm->h,
344 hash_str(ipm->m_class, IP_HASHBITS) ^
345 hash_ip6(ipm->m_addr));
352 static inline int ip_map_update(struct net *net, struct ip_map *ipm,
353 struct unix_domain *udom, time_t expiry)
355 struct sunrpc_net *sn;
357 sn = net_generic(net, sunrpc_net_id);
358 return __ip_map_update(sn->ip_map_cache, ipm, udom, expiry);
361 int auth_unix_add_addr(struct net *net, struct in6_addr *addr, struct auth_domain *dom)
363 struct unix_domain *udom;
366 if (dom->flavour != &svcauth_unix)
368 udom = container_of(dom, struct unix_domain, h);
369 ipmp = ip_map_lookup(net, "nfsd", addr);
372 return ip_map_update(net, ipmp, udom, NEVER);
376 EXPORT_SYMBOL_GPL(auth_unix_add_addr);
378 int auth_unix_forget_old(struct auth_domain *dom)
380 struct unix_domain *udom;
382 if (dom->flavour != &svcauth_unix)
384 udom = container_of(dom, struct unix_domain, h);
385 udom->addr_changes++;
388 EXPORT_SYMBOL_GPL(auth_unix_forget_old);
390 struct auth_domain *auth_unix_lookup(struct net *net, struct in6_addr *addr)
393 struct auth_domain *rv;
394 struct sunrpc_net *sn;
396 sn = net_generic(net, sunrpc_net_id);
397 ipm = ip_map_lookup(net, "nfsd", addr);
401 if (cache_check(sn->ip_map_cache, &ipm->h, NULL))
404 if ((ipm->m_client->addr_changes - ipm->m_add_change) >0) {
405 if (test_and_set_bit(CACHE_NEGATIVE, &ipm->h.flags) == 0)
406 auth_domain_put(&ipm->m_client->h);
409 rv = &ipm->m_client->h;
412 cache_put(&ipm->h, sn->ip_map_cache);
415 EXPORT_SYMBOL_GPL(auth_unix_lookup);
417 void svcauth_unix_purge(void)
422 struct sunrpc_net *sn;
424 sn = net_generic(net, sunrpc_net_id);
425 cache_purge(sn->ip_map_cache);
428 EXPORT_SYMBOL_GPL(svcauth_unix_purge);
430 static inline struct ip_map *
431 ip_map_cached_get(struct svc_xprt *xprt)
433 struct ip_map *ipm = NULL;
434 struct sunrpc_net *sn;
436 if (test_bit(XPT_CACHE_AUTH, &xprt->xpt_flags)) {
437 spin_lock(&xprt->xpt_lock);
438 ipm = xprt->xpt_auth_cache;
440 if (!cache_valid(&ipm->h)) {
442 * The entry has been invalidated since it was
443 * remembered, e.g. by a second mount from the
446 sn = net_generic(xprt->xpt_net, sunrpc_net_id);
447 xprt->xpt_auth_cache = NULL;
448 spin_unlock(&xprt->xpt_lock);
449 cache_put(&ipm->h, sn->ip_map_cache);
454 spin_unlock(&xprt->xpt_lock);
460 ip_map_cached_put(struct svc_xprt *xprt, struct ip_map *ipm)
462 if (test_bit(XPT_CACHE_AUTH, &xprt->xpt_flags)) {
463 spin_lock(&xprt->xpt_lock);
464 if (xprt->xpt_auth_cache == NULL) {
465 /* newly cached, keep the reference */
466 xprt->xpt_auth_cache = ipm;
469 spin_unlock(&xprt->xpt_lock);
472 struct sunrpc_net *sn;
474 sn = net_generic(xprt->xpt_net, sunrpc_net_id);
475 cache_put(&ipm->h, sn->ip_map_cache);
480 svcauth_unix_info_release(struct svc_xprt *xpt)
484 ipm = xpt->xpt_auth_cache;
486 struct sunrpc_net *sn;
488 sn = net_generic(xpt->xpt_net, sunrpc_net_id);
489 cache_put(&ipm->h, sn->ip_map_cache);
493 /****************************************************************************
494 * auth.unix.gid cache
495 * simple cache to map a UID to a list of GIDs
496 * because AUTH_UNIX aka AUTH_SYS has a max of 16
498 #define GID_HASHBITS 8
499 #define GID_HASHMAX (1<<GID_HASHBITS)
500 #define GID_HASHMASK (GID_HASHMAX - 1)
505 struct group_info *gi;
507 static struct cache_head *gid_table[GID_HASHMAX];
509 static void unix_gid_put(struct kref *kref)
511 struct cache_head *item = container_of(kref, struct cache_head, ref);
512 struct unix_gid *ug = container_of(item, struct unix_gid, h);
513 if (test_bit(CACHE_VALID, &item->flags) &&
514 !test_bit(CACHE_NEGATIVE, &item->flags))
515 put_group_info(ug->gi);
519 static int unix_gid_match(struct cache_head *corig, struct cache_head *cnew)
521 struct unix_gid *orig = container_of(corig, struct unix_gid, h);
522 struct unix_gid *new = container_of(cnew, struct unix_gid, h);
523 return orig->uid == new->uid;
525 static void unix_gid_init(struct cache_head *cnew, struct cache_head *citem)
527 struct unix_gid *new = container_of(cnew, struct unix_gid, h);
528 struct unix_gid *item = container_of(citem, struct unix_gid, h);
529 new->uid = item->uid;
531 static void unix_gid_update(struct cache_head *cnew, struct cache_head *citem)
533 struct unix_gid *new = container_of(cnew, struct unix_gid, h);
534 struct unix_gid *item = container_of(citem, struct unix_gid, h);
536 get_group_info(item->gi);
539 static struct cache_head *unix_gid_alloc(void)
541 struct unix_gid *g = kmalloc(sizeof(*g), GFP_KERNEL);
548 static void unix_gid_request(struct cache_detail *cd,
549 struct cache_head *h,
550 char **bpp, int *blen)
553 struct unix_gid *ug = container_of(h, struct unix_gid, h);
555 snprintf(tuid, 20, "%u", ug->uid);
556 qword_add(bpp, blen, tuid);
560 static int unix_gid_upcall(struct cache_detail *cd, struct cache_head *h)
562 return sunrpc_cache_pipe_upcall(cd, h, unix_gid_request);
565 static struct unix_gid *unix_gid_lookup(uid_t uid);
566 extern struct cache_detail unix_gid_cache;
568 static int unix_gid_parse(struct cache_detail *cd,
569 char *mesg, int mlen)
571 /* uid expiry Ngid gid0 gid1 ... gidN-1 */
578 struct unix_gid ug, *ugp;
580 if (mlen <= 0 || mesg[mlen-1] != '\n')
584 rv = get_int(&mesg, &uid);
589 expiry = get_expiry(&mesg);
593 rv = get_int(&mesg, &gids);
594 if (rv || gids < 0 || gids > 8192)
597 ug.gi = groups_alloc(gids);
601 for (i = 0 ; i < gids ; i++) {
603 rv = get_int(&mesg, &gid);
607 GROUP_AT(ug.gi, i) = gid;
610 ugp = unix_gid_lookup(uid);
612 struct cache_head *ch;
614 ug.h.expiry_time = expiry;
615 ch = sunrpc_cache_update(&unix_gid_cache,
617 hash_long(uid, GID_HASHBITS));
622 cache_put(ch, &unix_gid_cache);
628 put_group_info(ug.gi);
632 static int unix_gid_show(struct seq_file *m,
633 struct cache_detail *cd,
634 struct cache_head *h)
641 seq_puts(m, "#uid cnt: gids...\n");
644 ug = container_of(h, struct unix_gid, h);
645 if (test_bit(CACHE_VALID, &h->flags) &&
646 !test_bit(CACHE_NEGATIVE, &h->flags))
647 glen = ug->gi->ngroups;
651 seq_printf(m, "%u %d:", ug->uid, glen);
652 for (i = 0; i < glen; i++)
653 seq_printf(m, " %d", GROUP_AT(ug->gi, i));
658 struct cache_detail unix_gid_cache = {
659 .owner = THIS_MODULE,
660 .hash_size = GID_HASHMAX,
661 .hash_table = gid_table,
662 .name = "auth.unix.gid",
663 .cache_put = unix_gid_put,
664 .cache_upcall = unix_gid_upcall,
665 .cache_parse = unix_gid_parse,
666 .cache_show = unix_gid_show,
667 .match = unix_gid_match,
668 .init = unix_gid_init,
669 .update = unix_gid_update,
670 .alloc = unix_gid_alloc,
673 static struct unix_gid *unix_gid_lookup(uid_t uid)
676 struct cache_head *ch;
679 ch = sunrpc_cache_lookup(&unix_gid_cache, &ug.h,
680 hash_long(uid, GID_HASHBITS));
682 return container_of(ch, struct unix_gid, h);
687 static struct group_info *unix_gid_find(uid_t uid, struct svc_rqst *rqstp)
690 struct group_info *gi;
693 ug = unix_gid_lookup(uid);
695 return ERR_PTR(-EAGAIN);
696 ret = cache_check(&unix_gid_cache, &ug->h, &rqstp->rq_chandle);
699 return ERR_PTR(-ENOENT);
701 return ERR_PTR(-ESHUTDOWN);
703 gi = get_group_info(ug->gi);
704 cache_put(&ug->h, &unix_gid_cache);
707 return ERR_PTR(-EAGAIN);
712 svcauth_unix_set_client(struct svc_rqst *rqstp)
714 struct sockaddr_in *sin;
715 struct sockaddr_in6 *sin6, sin6_storage;
717 struct group_info *gi;
718 struct svc_cred *cred = &rqstp->rq_cred;
719 struct svc_xprt *xprt = rqstp->rq_xprt;
720 struct net *net = xprt->xpt_net;
721 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
723 switch (rqstp->rq_addr.ss_family) {
725 sin = svc_addr_in(rqstp);
726 sin6 = &sin6_storage;
727 ipv6_addr_set_v4mapped(sin->sin_addr.s_addr, &sin6->sin6_addr);
730 sin6 = svc_addr_in6(rqstp);
736 rqstp->rq_client = NULL;
737 if (rqstp->rq_proc == 0)
740 ipm = ip_map_cached_get(xprt);
742 ipm = __ip_map_lookup(sn->ip_map_cache, rqstp->rq_server->sv_program->pg_class,
748 switch (cache_check(sn->ip_map_cache, &ipm->h, &rqstp->rq_chandle)) {
758 rqstp->rq_client = &ipm->m_client->h;
759 kref_get(&rqstp->rq_client->ref);
760 ip_map_cached_put(xprt, ipm);
764 gi = unix_gid_find(cred->cr_uid, rqstp);
765 switch (PTR_ERR(gi)) {
773 put_group_info(cred->cr_group_info);
774 cred->cr_group_info = gi;
779 EXPORT_SYMBOL_GPL(svcauth_unix_set_client);
782 svcauth_null_accept(struct svc_rqst *rqstp, __be32 *authp)
784 struct kvec *argv = &rqstp->rq_arg.head[0];
785 struct kvec *resv = &rqstp->rq_res.head[0];
786 struct svc_cred *cred = &rqstp->rq_cred;
788 cred->cr_group_info = NULL;
789 rqstp->rq_client = NULL;
791 if (argv->iov_len < 3*4)
794 if (svc_getu32(argv) != 0) {
795 dprintk("svc: bad null cred\n");
796 *authp = rpc_autherr_badcred;
799 if (svc_getu32(argv) != htonl(RPC_AUTH_NULL) || svc_getu32(argv) != 0) {
800 dprintk("svc: bad null verf\n");
801 *authp = rpc_autherr_badverf;
805 /* Signal that mapping to nobody uid/gid is required */
806 cred->cr_uid = (uid_t) -1;
807 cred->cr_gid = (gid_t) -1;
808 cred->cr_group_info = groups_alloc(0);
809 if (cred->cr_group_info == NULL)
810 return SVC_CLOSE; /* kmalloc failure - client must retry */
812 /* Put NULL verifier */
813 svc_putnl(resv, RPC_AUTH_NULL);
816 rqstp->rq_flavor = RPC_AUTH_NULL;
821 svcauth_null_release(struct svc_rqst *rqstp)
823 if (rqstp->rq_client)
824 auth_domain_put(rqstp->rq_client);
825 rqstp->rq_client = NULL;
826 if (rqstp->rq_cred.cr_group_info)
827 put_group_info(rqstp->rq_cred.cr_group_info);
828 rqstp->rq_cred.cr_group_info = NULL;
830 return 0; /* don't drop */
834 struct auth_ops svcauth_null = {
836 .owner = THIS_MODULE,
837 .flavour = RPC_AUTH_NULL,
838 .accept = svcauth_null_accept,
839 .release = svcauth_null_release,
840 .set_client = svcauth_unix_set_client,
845 svcauth_unix_accept(struct svc_rqst *rqstp, __be32 *authp)
847 struct kvec *argv = &rqstp->rq_arg.head[0];
848 struct kvec *resv = &rqstp->rq_res.head[0];
849 struct svc_cred *cred = &rqstp->rq_cred;
851 int len = argv->iov_len;
853 cred->cr_group_info = NULL;
854 rqstp->rq_client = NULL;
856 if ((len -= 3*4) < 0)
859 svc_getu32(argv); /* length */
860 svc_getu32(argv); /* time stamp */
861 slen = XDR_QUADLEN(svc_getnl(argv)); /* machname length */
862 if (slen > 64 || (len -= (slen + 3)*4) < 0)
864 argv->iov_base = (void*)((__be32*)argv->iov_base + slen); /* skip machname */
865 argv->iov_len -= slen*4;
867 cred->cr_uid = svc_getnl(argv); /* uid */
868 cred->cr_gid = svc_getnl(argv); /* gid */
869 slen = svc_getnl(argv); /* gids length */
870 if (slen > 16 || (len -= (slen + 2)*4) < 0)
872 cred->cr_group_info = groups_alloc(slen);
873 if (cred->cr_group_info == NULL)
875 for (i = 0; i < slen; i++)
876 GROUP_AT(cred->cr_group_info, i) = svc_getnl(argv);
877 if (svc_getu32(argv) != htonl(RPC_AUTH_NULL) || svc_getu32(argv) != 0) {
878 *authp = rpc_autherr_badverf;
882 /* Put NULL verifier */
883 svc_putnl(resv, RPC_AUTH_NULL);
886 rqstp->rq_flavor = RPC_AUTH_UNIX;
890 *authp = rpc_autherr_badcred;
895 svcauth_unix_release(struct svc_rqst *rqstp)
897 /* Verifier (such as it is) is already in place.
899 if (rqstp->rq_client)
900 auth_domain_put(rqstp->rq_client);
901 rqstp->rq_client = NULL;
902 if (rqstp->rq_cred.cr_group_info)
903 put_group_info(rqstp->rq_cred.cr_group_info);
904 rqstp->rq_cred.cr_group_info = NULL;
910 struct auth_ops svcauth_unix = {
912 .owner = THIS_MODULE,
913 .flavour = RPC_AUTH_UNIX,
914 .accept = svcauth_unix_accept,
915 .release = svcauth_unix_release,
916 .domain_release = svcauth_unix_domain_release,
917 .set_client = svcauth_unix_set_client,
920 int ip_map_cache_create(struct net *net)
923 struct cache_detail *cd;
924 struct cache_head **tbl;
925 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
927 cd = kzalloc(sizeof(struct cache_detail), GFP_KERNEL);
931 tbl = kzalloc(IP_HASHMAX * sizeof(struct cache_head *), GFP_KERNEL);
935 cd->owner = THIS_MODULE,
936 cd->hash_size = IP_HASHMAX,
937 cd->hash_table = tbl,
938 cd->name = "auth.unix.ip",
939 cd->cache_put = ip_map_put,
940 cd->cache_upcall = ip_map_upcall,
941 cd->cache_parse = ip_map_parse,
942 cd->cache_show = ip_map_show,
943 cd->match = ip_map_match,
944 cd->init = ip_map_init,
946 cd->alloc = ip_map_alloc,
948 err = cache_register_net(cd, net);
952 sn->ip_map_cache = cd;
963 void ip_map_cache_destroy(struct net *net)
965 struct sunrpc_net *sn;
967 sn = net_generic(net, sunrpc_net_id);
968 cache_purge(sn->ip_map_cache);
969 cache_unregister_net(sn->ip_map_cache, net);
970 kfree(sn->ip_map_cache->hash_table);
971 kfree(sn->ip_map_cache);