1 /* xfrm_user.c: User interface to configure xfrm engine.
3 * Copyright (C) 2002 David S. Miller (davem@redhat.com)
7 * Kazunori MIYAZAWA @USAGI
8 * Kunihiro Ishiguro <kunihiro@ipinfusion.com>
13 #include <linux/crypto.h>
14 #include <linux/module.h>
15 #include <linux/kernel.h>
16 #include <linux/types.h>
17 #include <linux/slab.h>
18 #include <linux/socket.h>
19 #include <linux/string.h>
20 #include <linux/net.h>
21 #include <linux/skbuff.h>
22 #include <linux/rtnetlink.h>
23 #include <linux/pfkeyv2.h>
24 #include <linux/ipsec.h>
25 #include <linux/init.h>
26 #include <linux/security.h>
29 #include <net/netlink.h>
30 #include <asm/uaccess.h>
31 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
32 #include <linux/in6.h>
34 #include <linux/audit.h>
36 static int verify_one_alg(struct rtattr **xfrma, enum xfrm_attr_type_t type)
38 struct rtattr *rt = xfrma[type - 1];
39 struct xfrm_algo *algp;
45 len = (rt->rta_len - sizeof(*rt)) - sizeof(*algp);
51 len -= (algp->alg_key_len + 7U) / 8;
57 if (!algp->alg_key_len &&
58 strcmp(algp->alg_name, "digest_null") != 0)
63 if (!algp->alg_key_len &&
64 strcmp(algp->alg_name, "cipher_null") != 0)
69 /* Zero length keys are legal. */
76 algp->alg_name[CRYPTO_MAX_ALG_NAME - 1] = '\0';
80 static int verify_encap_tmpl(struct rtattr **xfrma)
82 struct rtattr *rt = xfrma[XFRMA_ENCAP - 1];
83 struct xfrm_encap_tmpl *encap;
88 if ((rt->rta_len - sizeof(*rt)) < sizeof(*encap))
94 static int verify_one_addr(struct rtattr **xfrma, enum xfrm_attr_type_t type,
95 xfrm_address_t **addrp)
97 struct rtattr *rt = xfrma[type - 1];
102 if ((rt->rta_len - sizeof(*rt)) < sizeof(**addrp))
106 *addrp = RTA_DATA(rt);
111 static inline int verify_sec_ctx_len(struct rtattr **xfrma)
113 struct rtattr *rt = xfrma[XFRMA_SEC_CTX - 1];
114 struct xfrm_user_sec_ctx *uctx;
120 if (rt->rta_len < sizeof(*uctx))
125 len += sizeof(struct xfrm_user_sec_ctx);
126 len += uctx->ctx_len;
128 if (uctx->len != len)
135 static int verify_newsa_info(struct xfrm_usersa_info *p,
136 struct rtattr **xfrma)
146 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
158 switch (p->id.proto) {
160 if (!xfrma[XFRMA_ALG_AUTH-1] ||
161 xfrma[XFRMA_ALG_CRYPT-1] ||
162 xfrma[XFRMA_ALG_COMP-1])
167 if ((!xfrma[XFRMA_ALG_AUTH-1] &&
168 !xfrma[XFRMA_ALG_CRYPT-1]) ||
169 xfrma[XFRMA_ALG_COMP-1])
174 if (!xfrma[XFRMA_ALG_COMP-1] ||
175 xfrma[XFRMA_ALG_AUTH-1] ||
176 xfrma[XFRMA_ALG_CRYPT-1])
180 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
181 case IPPROTO_DSTOPTS:
182 case IPPROTO_ROUTING:
183 if (xfrma[XFRMA_ALG_COMP-1] ||
184 xfrma[XFRMA_ALG_AUTH-1] ||
185 xfrma[XFRMA_ALG_CRYPT-1] ||
186 xfrma[XFRMA_ENCAP-1] ||
187 xfrma[XFRMA_SEC_CTX-1] ||
188 !xfrma[XFRMA_COADDR-1])
197 if ((err = verify_one_alg(xfrma, XFRMA_ALG_AUTH)))
199 if ((err = verify_one_alg(xfrma, XFRMA_ALG_CRYPT)))
201 if ((err = verify_one_alg(xfrma, XFRMA_ALG_COMP)))
203 if ((err = verify_encap_tmpl(xfrma)))
205 if ((err = verify_sec_ctx_len(xfrma)))
207 if ((err = verify_one_addr(xfrma, XFRMA_COADDR, NULL)))
212 case XFRM_MODE_TRANSPORT:
213 case XFRM_MODE_TUNNEL:
214 case XFRM_MODE_ROUTEOPTIMIZATION:
228 static int attach_one_algo(struct xfrm_algo **algpp, u8 *props,
229 struct xfrm_algo_desc *(*get_byname)(char *, int),
230 struct rtattr *u_arg)
232 struct rtattr *rta = u_arg;
233 struct xfrm_algo *p, *ualg;
234 struct xfrm_algo_desc *algo;
240 ualg = RTA_DATA(rta);
242 algo = get_byname(ualg->alg_name, 1);
245 *props = algo->desc.sadb_alg_id;
247 len = sizeof(*ualg) + (ualg->alg_key_len + 7U) / 8;
248 p = kmemdup(ualg, len, GFP_KERNEL);
252 strcpy(p->alg_name, algo->name);
257 static int attach_encap_tmpl(struct xfrm_encap_tmpl **encapp, struct rtattr *u_arg)
259 struct rtattr *rta = u_arg;
260 struct xfrm_encap_tmpl *p, *uencap;
265 uencap = RTA_DATA(rta);
266 p = kmemdup(uencap, sizeof(*p), GFP_KERNEL);
275 static inline int xfrm_user_sec_ctx_size(struct xfrm_sec_ctx *xfrm_ctx)
280 len += sizeof(struct xfrm_user_sec_ctx);
281 len += xfrm_ctx->ctx_len;
286 static int attach_sec_ctx(struct xfrm_state *x, struct rtattr *u_arg)
288 struct xfrm_user_sec_ctx *uctx;
293 uctx = RTA_DATA(u_arg);
294 return security_xfrm_state_alloc(x, uctx);
297 static int attach_one_addr(xfrm_address_t **addrpp, struct rtattr *u_arg)
299 struct rtattr *rta = u_arg;
300 xfrm_address_t *p, *uaddrp;
305 uaddrp = RTA_DATA(rta);
306 p = kmemdup(uaddrp, sizeof(*p), GFP_KERNEL);
314 static void copy_from_user_state(struct xfrm_state *x, struct xfrm_usersa_info *p)
316 memcpy(&x->id, &p->id, sizeof(x->id));
317 memcpy(&x->sel, &p->sel, sizeof(x->sel));
318 memcpy(&x->lft, &p->lft, sizeof(x->lft));
319 x->props.mode = p->mode;
320 x->props.replay_window = p->replay_window;
321 x->props.reqid = p->reqid;
322 x->props.family = p->family;
323 memcpy(&x->props.saddr, &p->saddr, sizeof(x->props.saddr));
324 x->props.flags = p->flags;
327 * Set inner address family if the KM left it as zero.
328 * See comment in validate_tmpl.
331 x->sel.family = p->family;
335 * someday when pfkey also has support, we could have the code
336 * somehow made shareable and move it to xfrm_state.c - JHS
339 static int xfrm_update_ae_params(struct xfrm_state *x, struct rtattr **xfrma)
342 struct rtattr *rp = xfrma[XFRMA_REPLAY_VAL-1];
343 struct rtattr *lt = xfrma[XFRMA_LTIME_VAL-1];
344 struct rtattr *et = xfrma[XFRMA_ETIMER_THRESH-1];
345 struct rtattr *rt = xfrma[XFRMA_REPLAY_THRESH-1];
348 struct xfrm_replay_state *replay;
349 if (RTA_PAYLOAD(rp) < sizeof(*replay))
351 replay = RTA_DATA(rp);
352 memcpy(&x->replay, replay, sizeof(*replay));
353 memcpy(&x->preplay, replay, sizeof(*replay));
357 struct xfrm_lifetime_cur *ltime;
358 if (RTA_PAYLOAD(lt) < sizeof(*ltime))
360 ltime = RTA_DATA(lt);
361 x->curlft.bytes = ltime->bytes;
362 x->curlft.packets = ltime->packets;
363 x->curlft.add_time = ltime->add_time;
364 x->curlft.use_time = ltime->use_time;
368 if (RTA_PAYLOAD(et) < sizeof(u32))
370 x->replay_maxage = *(u32*)RTA_DATA(et);
374 if (RTA_PAYLOAD(rt) < sizeof(u32))
376 x->replay_maxdiff = *(u32*)RTA_DATA(rt);
384 static struct xfrm_state *xfrm_state_construct(struct xfrm_usersa_info *p,
385 struct rtattr **xfrma,
388 struct xfrm_state *x = xfrm_state_alloc();
394 copy_from_user_state(x, p);
396 if ((err = attach_one_algo(&x->aalg, &x->props.aalgo,
397 xfrm_aalg_get_byname,
398 xfrma[XFRMA_ALG_AUTH-1])))
400 if ((err = attach_one_algo(&x->ealg, &x->props.ealgo,
401 xfrm_ealg_get_byname,
402 xfrma[XFRMA_ALG_CRYPT-1])))
404 if ((err = attach_one_algo(&x->calg, &x->props.calgo,
405 xfrm_calg_get_byname,
406 xfrma[XFRMA_ALG_COMP-1])))
408 if ((err = attach_encap_tmpl(&x->encap, xfrma[XFRMA_ENCAP-1])))
410 if ((err = attach_one_addr(&x->coaddr, xfrma[XFRMA_COADDR-1])))
412 err = xfrm_init_state(x);
416 if ((err = attach_sec_ctx(x, xfrma[XFRMA_SEC_CTX-1])))
420 x->replay_maxdiff = sysctl_xfrm_aevent_rseqth;
421 /* sysctl_xfrm_aevent_etime is in 100ms units */
422 x->replay_maxage = (sysctl_xfrm_aevent_etime*HZ)/XFRM_AE_ETH_M;
423 x->preplay.bitmap = 0;
424 x->preplay.seq = x->replay.seq+x->replay_maxdiff;
425 x->preplay.oseq = x->replay.oseq +x->replay_maxdiff;
427 /* override default values from above */
429 err = xfrm_update_ae_params(x, (struct rtattr **)xfrma);
436 x->km.state = XFRM_STATE_DEAD;
443 static int xfrm_add_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
444 struct rtattr **xfrma)
446 struct xfrm_usersa_info *p = NLMSG_DATA(nlh);
447 struct xfrm_state *x;
451 err = verify_newsa_info(p, xfrma);
455 x = xfrm_state_construct(p, xfrma, &err);
460 if (nlh->nlmsg_type == XFRM_MSG_NEWSA)
461 err = xfrm_state_add(x);
463 err = xfrm_state_update(x);
465 xfrm_audit_log(NETLINK_CB(skb).loginuid, NETLINK_CB(skb).sid,
466 AUDIT_MAC_IPSEC_ADDSA, err ? 0 : 1, NULL, x);
469 x->km.state = XFRM_STATE_DEAD;
474 c.seq = nlh->nlmsg_seq;
475 c.pid = nlh->nlmsg_pid;
476 c.event = nlh->nlmsg_type;
478 km_state_notify(x, &c);
484 static struct xfrm_state *xfrm_user_state_lookup(struct xfrm_usersa_id *p,
485 struct rtattr **xfrma,
488 struct xfrm_state *x = NULL;
491 if (xfrm_id_proto_match(p->proto, IPSEC_PROTO_ANY)) {
493 x = xfrm_state_lookup(&p->daddr, p->spi, p->proto, p->family);
495 xfrm_address_t *saddr = NULL;
497 err = verify_one_addr(xfrma, XFRMA_SRCADDR, &saddr);
507 x = xfrm_state_lookup_byaddr(&p->daddr, saddr, p->proto,
517 static int xfrm_del_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
518 struct rtattr **xfrma)
520 struct xfrm_state *x;
523 struct xfrm_usersa_id *p = NLMSG_DATA(nlh);
525 x = xfrm_user_state_lookup(p, xfrma, &err);
529 if ((err = security_xfrm_state_delete(x)) != 0)
532 if (xfrm_state_kern(x)) {
537 err = xfrm_state_delete(x);
542 c.seq = nlh->nlmsg_seq;
543 c.pid = nlh->nlmsg_pid;
544 c.event = nlh->nlmsg_type;
545 km_state_notify(x, &c);
548 xfrm_audit_log(NETLINK_CB(skb).loginuid, NETLINK_CB(skb).sid,
549 AUDIT_MAC_IPSEC_DELSA, err ? 0 : 1, NULL, x);
554 static void copy_to_user_state(struct xfrm_state *x, struct xfrm_usersa_info *p)
556 memcpy(&p->id, &x->id, sizeof(p->id));
557 memcpy(&p->sel, &x->sel, sizeof(p->sel));
558 memcpy(&p->lft, &x->lft, sizeof(p->lft));
559 memcpy(&p->curlft, &x->curlft, sizeof(p->curlft));
560 memcpy(&p->stats, &x->stats, sizeof(p->stats));
561 memcpy(&p->saddr, &x->props.saddr, sizeof(p->saddr));
562 p->mode = x->props.mode;
563 p->replay_window = x->props.replay_window;
564 p->reqid = x->props.reqid;
565 p->family = x->props.family;
566 p->flags = x->props.flags;
570 struct xfrm_dump_info {
571 struct sk_buff *in_skb;
572 struct sk_buff *out_skb;
579 static int dump_one_state(struct xfrm_state *x, int count, void *ptr)
581 struct xfrm_dump_info *sp = ptr;
582 struct sk_buff *in_skb = sp->in_skb;
583 struct sk_buff *skb = sp->out_skb;
584 struct xfrm_usersa_info *p;
585 struct nlmsghdr *nlh;
587 if (sp->this_idx < sp->start_idx)
590 nlh = nlmsg_put(skb, NETLINK_CB(in_skb).pid, sp->nlmsg_seq,
591 XFRM_MSG_NEWSA, sizeof(*p), sp->nlmsg_flags);
596 copy_to_user_state(x, p);
599 RTA_PUT(skb, XFRMA_ALG_AUTH,
600 sizeof(*(x->aalg))+(x->aalg->alg_key_len+7)/8, x->aalg);
602 RTA_PUT(skb, XFRMA_ALG_CRYPT,
603 sizeof(*(x->ealg))+(x->ealg->alg_key_len+7)/8, x->ealg);
605 RTA_PUT(skb, XFRMA_ALG_COMP, sizeof(*(x->calg)), x->calg);
608 RTA_PUT(skb, XFRMA_ENCAP, sizeof(*x->encap), x->encap);
611 int ctx_size = sizeof(struct xfrm_sec_ctx) +
612 x->security->ctx_len;
613 struct rtattr *rt = __RTA_PUT(skb, XFRMA_SEC_CTX, ctx_size);
614 struct xfrm_user_sec_ctx *uctx = RTA_DATA(rt);
616 uctx->exttype = XFRMA_SEC_CTX;
617 uctx->len = ctx_size;
618 uctx->ctx_doi = x->security->ctx_doi;
619 uctx->ctx_alg = x->security->ctx_alg;
620 uctx->ctx_len = x->security->ctx_len;
621 memcpy(uctx + 1, x->security->ctx_str, x->security->ctx_len);
625 RTA_PUT(skb, XFRMA_COADDR, sizeof(*x->coaddr), x->coaddr);
628 RTA_PUT(skb, XFRMA_LASTUSED, sizeof(x->lastused), &x->lastused);
636 nlmsg_cancel(skb, nlh);
640 static int xfrm_dump_sa(struct sk_buff *skb, struct netlink_callback *cb)
642 struct xfrm_dump_info info;
644 info.in_skb = cb->skb;
646 info.nlmsg_seq = cb->nlh->nlmsg_seq;
647 info.nlmsg_flags = NLM_F_MULTI;
649 info.start_idx = cb->args[0];
650 (void) xfrm_state_walk(0, dump_one_state, &info);
651 cb->args[0] = info.this_idx;
656 static struct sk_buff *xfrm_state_netlink(struct sk_buff *in_skb,
657 struct xfrm_state *x, u32 seq)
659 struct xfrm_dump_info info;
662 skb = alloc_skb(NLMSG_GOODSIZE, GFP_ATOMIC);
664 return ERR_PTR(-ENOMEM);
666 info.in_skb = in_skb;
668 info.nlmsg_seq = seq;
669 info.nlmsg_flags = 0;
670 info.this_idx = info.start_idx = 0;
672 if (dump_one_state(x, 0, &info)) {
680 static int build_spdinfo(struct sk_buff *skb, u32 pid, u32 seq, u32 flags)
682 struct xfrmk_spdinfo si;
683 struct xfrmu_spdinfo spc;
684 struct xfrmu_spdhinfo sph;
685 struct nlmsghdr *nlh;
688 nlh = nlmsg_put(skb, pid, seq, XFRM_MSG_NEWSPDINFO, sizeof(u32), 0);
689 if (nlh == NULL) /* shouldnt really happen ... */
694 xfrm_spd_getinfo(&si);
695 spc.incnt = si.incnt;
696 spc.outcnt = si.outcnt;
697 spc.fwdcnt = si.fwdcnt;
698 spc.inscnt = si.inscnt;
699 spc.outscnt = si.outscnt;
700 spc.fwdscnt = si.fwdscnt;
701 sph.spdhcnt = si.spdhcnt;
702 sph.spdhmcnt = si.spdhmcnt;
704 NLA_PUT(skb, XFRMA_SPD_INFO, sizeof(spc), &spc);
705 NLA_PUT(skb, XFRMA_SPD_HINFO, sizeof(sph), &sph);
707 return nlmsg_end(skb, nlh);
710 nlmsg_cancel(skb, nlh);
714 static int xfrm_get_spdinfo(struct sk_buff *skb, struct nlmsghdr *nlh,
715 struct rtattr **xfrma)
717 struct sk_buff *r_skb;
718 u32 *flags = NLMSG_DATA(nlh);
719 u32 spid = NETLINK_CB(skb).pid;
720 u32 seq = nlh->nlmsg_seq;
721 int len = NLMSG_LENGTH(sizeof(u32));
723 len += RTA_SPACE(sizeof(struct xfrmu_spdinfo));
724 len += RTA_SPACE(sizeof(struct xfrmu_spdhinfo));
726 r_skb = alloc_skb(len, GFP_ATOMIC);
730 if (build_spdinfo(r_skb, spid, seq, *flags) < 0)
733 return nlmsg_unicast(xfrm_nl, r_skb, spid);
736 static int build_sadinfo(struct sk_buff *skb, u32 pid, u32 seq, u32 flags)
738 struct xfrmk_sadinfo si;
739 struct xfrmu_sadhinfo sh;
740 struct nlmsghdr *nlh;
743 nlh = nlmsg_put(skb, pid, seq, XFRM_MSG_NEWSADINFO, sizeof(u32), 0);
744 if (nlh == NULL) /* shouldnt really happen ... */
749 xfrm_sad_getinfo(&si);
751 sh.sadhmcnt = si.sadhmcnt;
752 sh.sadhcnt = si.sadhcnt;
754 NLA_PUT_U32(skb, XFRMA_SAD_CNT, si.sadcnt);
755 NLA_PUT(skb, XFRMA_SAD_HINFO, sizeof(sh), &sh);
757 return nlmsg_end(skb, nlh);
760 nlmsg_cancel(skb, nlh);
764 static int xfrm_get_sadinfo(struct sk_buff *skb, struct nlmsghdr *nlh,
765 struct rtattr **xfrma)
767 struct sk_buff *r_skb;
768 u32 *flags = NLMSG_DATA(nlh);
769 u32 spid = NETLINK_CB(skb).pid;
770 u32 seq = nlh->nlmsg_seq;
771 int len = NLMSG_LENGTH(sizeof(u32));
773 len += RTA_SPACE(sizeof(struct xfrmu_sadhinfo));
774 len += RTA_SPACE(sizeof(u32));
776 r_skb = alloc_skb(len, GFP_ATOMIC);
781 if (build_sadinfo(r_skb, spid, seq, *flags) < 0)
784 return nlmsg_unicast(xfrm_nl, r_skb, spid);
787 static int xfrm_get_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
788 struct rtattr **xfrma)
790 struct xfrm_usersa_id *p = NLMSG_DATA(nlh);
791 struct xfrm_state *x;
792 struct sk_buff *resp_skb;
795 x = xfrm_user_state_lookup(p, xfrma, &err);
799 resp_skb = xfrm_state_netlink(skb, x, nlh->nlmsg_seq);
800 if (IS_ERR(resp_skb)) {
801 err = PTR_ERR(resp_skb);
803 err = netlink_unicast(xfrm_nl, resp_skb,
804 NETLINK_CB(skb).pid, MSG_DONTWAIT);
811 static int verify_userspi_info(struct xfrm_userspi_info *p)
813 switch (p->info.id.proto) {
819 /* IPCOMP spi is 16-bits. */
820 if (p->max >= 0x10000)
834 static int xfrm_alloc_userspi(struct sk_buff *skb, struct nlmsghdr *nlh,
835 struct rtattr **xfrma)
837 struct xfrm_state *x;
838 struct xfrm_userspi_info *p;
839 struct sk_buff *resp_skb;
840 xfrm_address_t *daddr;
845 err = verify_userspi_info(p);
849 family = p->info.family;
850 daddr = &p->info.id.daddr;
854 x = xfrm_find_acq_byseq(p->info.seq);
855 if (x && xfrm_addr_cmp(&x->id.daddr, daddr, family)) {
862 x = xfrm_find_acq(p->info.mode, p->info.reqid,
863 p->info.id.proto, daddr,
870 resp_skb = ERR_PTR(-ENOENT);
872 spin_lock_bh(&x->lock);
873 if (x->km.state != XFRM_STATE_DEAD) {
874 xfrm_alloc_spi(x, htonl(p->min), htonl(p->max));
876 resp_skb = xfrm_state_netlink(skb, x, nlh->nlmsg_seq);
878 spin_unlock_bh(&x->lock);
880 if (IS_ERR(resp_skb)) {
881 err = PTR_ERR(resp_skb);
885 err = netlink_unicast(xfrm_nl, resp_skb,
886 NETLINK_CB(skb).pid, MSG_DONTWAIT);
894 static int verify_policy_dir(u8 dir)
898 case XFRM_POLICY_OUT:
899 case XFRM_POLICY_FWD:
909 static int verify_policy_type(u8 type)
912 case XFRM_POLICY_TYPE_MAIN:
913 #ifdef CONFIG_XFRM_SUB_POLICY
914 case XFRM_POLICY_TYPE_SUB:
925 static int verify_newpolicy_info(struct xfrm_userpolicy_info *p)
929 case XFRM_SHARE_SESSION:
930 case XFRM_SHARE_USER:
931 case XFRM_SHARE_UNIQUE:
939 case XFRM_POLICY_ALLOW:
940 case XFRM_POLICY_BLOCK:
947 switch (p->sel.family) {
952 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
955 return -EAFNOSUPPORT;
962 return verify_policy_dir(p->dir);
965 static int copy_from_user_sec_ctx(struct xfrm_policy *pol, struct rtattr **xfrma)
967 struct rtattr *rt = xfrma[XFRMA_SEC_CTX-1];
968 struct xfrm_user_sec_ctx *uctx;
974 return security_xfrm_policy_alloc(pol, uctx);
977 static void copy_templates(struct xfrm_policy *xp, struct xfrm_user_tmpl *ut,
983 for (i = 0; i < nr; i++, ut++) {
984 struct xfrm_tmpl *t = &xp->xfrm_vec[i];
986 memcpy(&t->id, &ut->id, sizeof(struct xfrm_id));
987 memcpy(&t->saddr, &ut->saddr,
988 sizeof(xfrm_address_t));
989 t->reqid = ut->reqid;
991 t->share = ut->share;
992 t->optional = ut->optional;
993 t->aalgos = ut->aalgos;
994 t->ealgos = ut->ealgos;
995 t->calgos = ut->calgos;
996 t->encap_family = ut->family;
1000 static int validate_tmpl(int nr, struct xfrm_user_tmpl *ut, u16 family)
1004 if (nr > XFRM_MAX_DEPTH)
1007 for (i = 0; i < nr; i++) {
1008 /* We never validated the ut->family value, so many
1009 * applications simply leave it at zero. The check was
1010 * never made and ut->family was ignored because all
1011 * templates could be assumed to have the same family as
1012 * the policy itself. Now that we will have ipv4-in-ipv6
1013 * and ipv6-in-ipv4 tunnels, this is no longer true.
1016 ut[i].family = family;
1018 switch (ut[i].family) {
1021 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
1033 static int copy_from_user_tmpl(struct xfrm_policy *pol, struct rtattr **xfrma)
1035 struct rtattr *rt = xfrma[XFRMA_TMPL-1];
1040 struct xfrm_user_tmpl *utmpl = RTA_DATA(rt);
1041 int nr = (rt->rta_len - sizeof(*rt)) / sizeof(*utmpl);
1044 err = validate_tmpl(nr, utmpl, pol->family);
1048 copy_templates(pol, RTA_DATA(rt), nr);
1053 static int copy_from_user_policy_type(u8 *tp, struct rtattr **xfrma)
1055 struct rtattr *rt = xfrma[XFRMA_POLICY_TYPE-1];
1056 struct xfrm_userpolicy_type *upt;
1057 u8 type = XFRM_POLICY_TYPE_MAIN;
1061 if (rt->rta_len < sizeof(*upt))
1068 err = verify_policy_type(type);
1076 static void copy_from_user_policy(struct xfrm_policy *xp, struct xfrm_userpolicy_info *p)
1078 xp->priority = p->priority;
1079 xp->index = p->index;
1080 memcpy(&xp->selector, &p->sel, sizeof(xp->selector));
1081 memcpy(&xp->lft, &p->lft, sizeof(xp->lft));
1082 xp->action = p->action;
1083 xp->flags = p->flags;
1084 xp->family = p->sel.family;
1085 /* XXX xp->share = p->share; */
1088 static void copy_to_user_policy(struct xfrm_policy *xp, struct xfrm_userpolicy_info *p, int dir)
1090 memcpy(&p->sel, &xp->selector, sizeof(p->sel));
1091 memcpy(&p->lft, &xp->lft, sizeof(p->lft));
1092 memcpy(&p->curlft, &xp->curlft, sizeof(p->curlft));
1093 p->priority = xp->priority;
1094 p->index = xp->index;
1095 p->sel.family = xp->family;
1097 p->action = xp->action;
1098 p->flags = xp->flags;
1099 p->share = XFRM_SHARE_ANY; /* XXX xp->share */
1102 static struct xfrm_policy *xfrm_policy_construct(struct xfrm_userpolicy_info *p, struct rtattr **xfrma, int *errp)
1104 struct xfrm_policy *xp = xfrm_policy_alloc(GFP_KERNEL);
1112 copy_from_user_policy(xp, p);
1114 err = copy_from_user_policy_type(&xp->type, xfrma);
1118 if (!(err = copy_from_user_tmpl(xp, xfrma)))
1119 err = copy_from_user_sec_ctx(xp, xfrma);
1130 static int xfrm_add_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
1131 struct rtattr **xfrma)
1133 struct xfrm_userpolicy_info *p = NLMSG_DATA(nlh);
1134 struct xfrm_policy *xp;
1139 err = verify_newpolicy_info(p);
1142 err = verify_sec_ctx_len(xfrma);
1146 xp = xfrm_policy_construct(p, xfrma, &err);
1150 /* shouldnt excl be based on nlh flags??
1151 * Aha! this is anti-netlink really i.e more pfkey derived
1152 * in netlink excl is a flag and you wouldnt need
1153 * a type XFRM_MSG_UPDPOLICY - JHS */
1154 excl = nlh->nlmsg_type == XFRM_MSG_NEWPOLICY;
1155 err = xfrm_policy_insert(p->dir, xp, excl);
1156 xfrm_audit_log(NETLINK_CB(skb).loginuid, NETLINK_CB(skb).sid,
1157 AUDIT_MAC_IPSEC_DELSPD, err ? 0 : 1, xp, NULL);
1160 security_xfrm_policy_free(xp);
1165 c.event = nlh->nlmsg_type;
1166 c.seq = nlh->nlmsg_seq;
1167 c.pid = nlh->nlmsg_pid;
1168 km_policy_notify(xp, p->dir, &c);
1175 static int copy_to_user_tmpl(struct xfrm_policy *xp, struct sk_buff *skb)
1177 struct xfrm_user_tmpl vec[XFRM_MAX_DEPTH];
1180 if (xp->xfrm_nr == 0)
1183 for (i = 0; i < xp->xfrm_nr; i++) {
1184 struct xfrm_user_tmpl *up = &vec[i];
1185 struct xfrm_tmpl *kp = &xp->xfrm_vec[i];
1187 memcpy(&up->id, &kp->id, sizeof(up->id));
1188 up->family = kp->encap_family;
1189 memcpy(&up->saddr, &kp->saddr, sizeof(up->saddr));
1190 up->reqid = kp->reqid;
1191 up->mode = kp->mode;
1192 up->share = kp->share;
1193 up->optional = kp->optional;
1194 up->aalgos = kp->aalgos;
1195 up->ealgos = kp->ealgos;
1196 up->calgos = kp->calgos;
1198 RTA_PUT(skb, XFRMA_TMPL,
1199 (sizeof(struct xfrm_user_tmpl) * xp->xfrm_nr),
1208 static int copy_sec_ctx(struct xfrm_sec_ctx *s, struct sk_buff *skb)
1210 int ctx_size = sizeof(struct xfrm_sec_ctx) + s->ctx_len;
1211 struct rtattr *rt = __RTA_PUT(skb, XFRMA_SEC_CTX, ctx_size);
1212 struct xfrm_user_sec_ctx *uctx = RTA_DATA(rt);
1214 uctx->exttype = XFRMA_SEC_CTX;
1215 uctx->len = ctx_size;
1216 uctx->ctx_doi = s->ctx_doi;
1217 uctx->ctx_alg = s->ctx_alg;
1218 uctx->ctx_len = s->ctx_len;
1219 memcpy(uctx + 1, s->ctx_str, s->ctx_len);
1226 static inline int copy_to_user_state_sec_ctx(struct xfrm_state *x, struct sk_buff *skb)
1229 return copy_sec_ctx(x->security, skb);
1234 static inline int copy_to_user_sec_ctx(struct xfrm_policy *xp, struct sk_buff *skb)
1237 return copy_sec_ctx(xp->security, skb);
1242 #ifdef CONFIG_XFRM_SUB_POLICY
1243 static int copy_to_user_policy_type(u8 type, struct sk_buff *skb)
1245 struct xfrm_userpolicy_type upt;
1247 memset(&upt, 0, sizeof(upt));
1250 RTA_PUT(skb, XFRMA_POLICY_TYPE, sizeof(upt), &upt);
1259 static inline int copy_to_user_policy_type(u8 type, struct sk_buff *skb)
1265 static int dump_one_policy(struct xfrm_policy *xp, int dir, int count, void *ptr)
1267 struct xfrm_dump_info *sp = ptr;
1268 struct xfrm_userpolicy_info *p;
1269 struct sk_buff *in_skb = sp->in_skb;
1270 struct sk_buff *skb = sp->out_skb;
1271 struct nlmsghdr *nlh;
1273 if (sp->this_idx < sp->start_idx)
1276 nlh = nlmsg_put(skb, NETLINK_CB(in_skb).pid, sp->nlmsg_seq,
1277 XFRM_MSG_NEWPOLICY, sizeof(*p), sp->nlmsg_flags);
1280 p = NLMSG_DATA(nlh);
1282 copy_to_user_policy(xp, p, dir);
1283 if (copy_to_user_tmpl(xp, skb) < 0)
1285 if (copy_to_user_sec_ctx(xp, skb))
1287 if (copy_to_user_policy_type(xp->type, skb) < 0)
1290 nlmsg_end(skb, nlh);
1296 nlmsg_cancel(skb, nlh);
1300 static int xfrm_dump_policy(struct sk_buff *skb, struct netlink_callback *cb)
1302 struct xfrm_dump_info info;
1304 info.in_skb = cb->skb;
1306 info.nlmsg_seq = cb->nlh->nlmsg_seq;
1307 info.nlmsg_flags = NLM_F_MULTI;
1309 info.start_idx = cb->args[0];
1310 (void) xfrm_policy_walk(XFRM_POLICY_TYPE_MAIN, dump_one_policy, &info);
1311 #ifdef CONFIG_XFRM_SUB_POLICY
1312 (void) xfrm_policy_walk(XFRM_POLICY_TYPE_SUB, dump_one_policy, &info);
1314 cb->args[0] = info.this_idx;
1319 static struct sk_buff *xfrm_policy_netlink(struct sk_buff *in_skb,
1320 struct xfrm_policy *xp,
1323 struct xfrm_dump_info info;
1324 struct sk_buff *skb;
1326 skb = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
1328 return ERR_PTR(-ENOMEM);
1330 info.in_skb = in_skb;
1332 info.nlmsg_seq = seq;
1333 info.nlmsg_flags = 0;
1334 info.this_idx = info.start_idx = 0;
1336 if (dump_one_policy(xp, dir, 0, &info) < 0) {
1344 static int xfrm_get_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
1345 struct rtattr **xfrma)
1347 struct xfrm_policy *xp;
1348 struct xfrm_userpolicy_id *p;
1349 u8 type = XFRM_POLICY_TYPE_MAIN;
1354 p = NLMSG_DATA(nlh);
1355 delete = nlh->nlmsg_type == XFRM_MSG_DELPOLICY;
1357 err = copy_from_user_policy_type(&type, xfrma);
1361 err = verify_policy_dir(p->dir);
1366 xp = xfrm_policy_byid(type, p->dir, p->index, delete, &err);
1368 struct rtattr *rt = xfrma[XFRMA_SEC_CTX-1];
1369 struct xfrm_policy tmp;
1371 err = verify_sec_ctx_len(xfrma);
1375 memset(&tmp, 0, sizeof(struct xfrm_policy));
1377 struct xfrm_user_sec_ctx *uctx = RTA_DATA(rt);
1379 if ((err = security_xfrm_policy_alloc(&tmp, uctx)))
1382 xp = xfrm_policy_bysel_ctx(type, p->dir, &p->sel, tmp.security,
1384 security_xfrm_policy_free(&tmp);
1390 struct sk_buff *resp_skb;
1392 resp_skb = xfrm_policy_netlink(skb, xp, p->dir, nlh->nlmsg_seq);
1393 if (IS_ERR(resp_skb)) {
1394 err = PTR_ERR(resp_skb);
1396 err = netlink_unicast(xfrm_nl, resp_skb,
1397 NETLINK_CB(skb).pid,
1401 xfrm_audit_log(NETLINK_CB(skb).loginuid, NETLINK_CB(skb).sid,
1402 AUDIT_MAC_IPSEC_DELSPD, err ? 0 : 1, xp, NULL);
1407 c.data.byid = p->index;
1408 c.event = nlh->nlmsg_type;
1409 c.seq = nlh->nlmsg_seq;
1410 c.pid = nlh->nlmsg_pid;
1411 km_policy_notify(xp, p->dir, &c);
1419 static int xfrm_flush_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
1420 struct rtattr **xfrma)
1423 struct xfrm_usersa_flush *p = NLMSG_DATA(nlh);
1424 struct xfrm_audit audit_info;
1427 audit_info.loginuid = NETLINK_CB(skb).loginuid;
1428 audit_info.secid = NETLINK_CB(skb).sid;
1429 err = xfrm_state_flush(p->proto, &audit_info);
1432 c.data.proto = p->proto;
1433 c.event = nlh->nlmsg_type;
1434 c.seq = nlh->nlmsg_seq;
1435 c.pid = nlh->nlmsg_pid;
1436 km_state_notify(NULL, &c);
1442 static int build_aevent(struct sk_buff *skb, struct xfrm_state *x, struct km_event *c)
1444 struct xfrm_aevent_id *id;
1445 struct nlmsghdr *nlh;
1446 struct xfrm_lifetime_cur ltime;
1448 nlh = nlmsg_put(skb, c->pid, c->seq, XFRM_MSG_NEWAE, sizeof(*id), 0);
1451 id = NLMSG_DATA(nlh);
1453 memcpy(&id->sa_id.daddr, &x->id.daddr,sizeof(x->id.daddr));
1454 id->sa_id.spi = x->id.spi;
1455 id->sa_id.family = x->props.family;
1456 id->sa_id.proto = x->id.proto;
1457 memcpy(&id->saddr, &x->props.saddr,sizeof(x->props.saddr));
1458 id->reqid = x->props.reqid;
1459 id->flags = c->data.aevent;
1461 RTA_PUT(skb, XFRMA_REPLAY_VAL, sizeof(x->replay), &x->replay);
1463 ltime.bytes = x->curlft.bytes;
1464 ltime.packets = x->curlft.packets;
1465 ltime.add_time = x->curlft.add_time;
1466 ltime.use_time = x->curlft.use_time;
1468 RTA_PUT(skb, XFRMA_LTIME_VAL, sizeof(struct xfrm_lifetime_cur), <ime);
1470 if (id->flags&XFRM_AE_RTHR) {
1471 RTA_PUT(skb,XFRMA_REPLAY_THRESH,sizeof(u32),&x->replay_maxdiff);
1474 if (id->flags&XFRM_AE_ETHR) {
1475 u32 etimer = x->replay_maxage*10/HZ;
1476 RTA_PUT(skb,XFRMA_ETIMER_THRESH,sizeof(u32),&etimer);
1479 return nlmsg_end(skb, nlh);
1482 nlmsg_cancel(skb, nlh);
1486 static int xfrm_get_ae(struct sk_buff *skb, struct nlmsghdr *nlh,
1487 struct rtattr **xfrma)
1489 struct xfrm_state *x;
1490 struct sk_buff *r_skb;
1493 struct xfrm_aevent_id *p = NLMSG_DATA(nlh);
1494 int len = NLMSG_LENGTH(sizeof(struct xfrm_aevent_id));
1495 struct xfrm_usersa_id *id = &p->sa_id;
1497 len += RTA_SPACE(sizeof(struct xfrm_replay_state));
1498 len += RTA_SPACE(sizeof(struct xfrm_lifetime_cur));
1500 if (p->flags&XFRM_AE_RTHR)
1501 len+=RTA_SPACE(sizeof(u32));
1503 if (p->flags&XFRM_AE_ETHR)
1504 len+=RTA_SPACE(sizeof(u32));
1506 r_skb = alloc_skb(len, GFP_ATOMIC);
1510 x = xfrm_state_lookup(&id->daddr, id->spi, id->proto, id->family);
1517 * XXX: is this lock really needed - none of the other
1518 * gets lock (the concern is things getting updated
1519 * while we are still reading) - jhs
1521 spin_lock_bh(&x->lock);
1522 c.data.aevent = p->flags;
1523 c.seq = nlh->nlmsg_seq;
1524 c.pid = nlh->nlmsg_pid;
1526 if (build_aevent(r_skb, x, &c) < 0)
1528 err = netlink_unicast(xfrm_nl, r_skb,
1529 NETLINK_CB(skb).pid, MSG_DONTWAIT);
1530 spin_unlock_bh(&x->lock);
1535 static int xfrm_new_ae(struct sk_buff *skb, struct nlmsghdr *nlh,
1536 struct rtattr **xfrma)
1538 struct xfrm_state *x;
1541 struct xfrm_aevent_id *p = NLMSG_DATA(nlh);
1542 struct rtattr *rp = xfrma[XFRMA_REPLAY_VAL-1];
1543 struct rtattr *lt = xfrma[XFRMA_LTIME_VAL-1];
1548 /* pedantic mode - thou shalt sayeth replaceth */
1549 if (!(nlh->nlmsg_flags&NLM_F_REPLACE))
1552 x = xfrm_state_lookup(&p->sa_id.daddr, p->sa_id.spi, p->sa_id.proto, p->sa_id.family);
1556 if (x->km.state != XFRM_STATE_VALID)
1559 spin_lock_bh(&x->lock);
1560 err = xfrm_update_ae_params(x, xfrma);
1561 spin_unlock_bh(&x->lock);
1565 c.event = nlh->nlmsg_type;
1566 c.seq = nlh->nlmsg_seq;
1567 c.pid = nlh->nlmsg_pid;
1568 c.data.aevent = XFRM_AE_CU;
1569 km_state_notify(x, &c);
1576 static int xfrm_flush_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
1577 struct rtattr **xfrma)
1580 u8 type = XFRM_POLICY_TYPE_MAIN;
1582 struct xfrm_audit audit_info;
1584 err = copy_from_user_policy_type(&type, xfrma);
1588 audit_info.loginuid = NETLINK_CB(skb).loginuid;
1589 audit_info.secid = NETLINK_CB(skb).sid;
1590 err = xfrm_policy_flush(type, &audit_info);
1594 c.event = nlh->nlmsg_type;
1595 c.seq = nlh->nlmsg_seq;
1596 c.pid = nlh->nlmsg_pid;
1597 km_policy_notify(NULL, 0, &c);
1601 static int xfrm_add_pol_expire(struct sk_buff *skb, struct nlmsghdr *nlh,
1602 struct rtattr **xfrma)
1604 struct xfrm_policy *xp;
1605 struct xfrm_user_polexpire *up = NLMSG_DATA(nlh);
1606 struct xfrm_userpolicy_info *p = &up->pol;
1607 u8 type = XFRM_POLICY_TYPE_MAIN;
1610 err = copy_from_user_policy_type(&type, xfrma);
1615 xp = xfrm_policy_byid(type, p->dir, p->index, 0, &err);
1617 struct rtattr *rt = xfrma[XFRMA_SEC_CTX-1];
1618 struct xfrm_policy tmp;
1620 err = verify_sec_ctx_len(xfrma);
1624 memset(&tmp, 0, sizeof(struct xfrm_policy));
1626 struct xfrm_user_sec_ctx *uctx = RTA_DATA(rt);
1628 if ((err = security_xfrm_policy_alloc(&tmp, uctx)))
1631 xp = xfrm_policy_bysel_ctx(type, p->dir, &p->sel, tmp.security,
1633 security_xfrm_policy_free(&tmp);
1638 read_lock(&xp->lock);
1640 read_unlock(&xp->lock);
1644 read_unlock(&xp->lock);
1647 xfrm_policy_delete(xp, p->dir);
1648 xfrm_audit_log(NETLINK_CB(skb).loginuid, NETLINK_CB(skb).sid,
1649 AUDIT_MAC_IPSEC_DELSPD, 1, xp, NULL);
1652 // reset the timers here?
1653 printk("Dont know what to do with soft policy expire\n");
1655 km_policy_expired(xp, p->dir, up->hard, current->pid);
1662 static int xfrm_add_sa_expire(struct sk_buff *skb, struct nlmsghdr *nlh,
1663 struct rtattr **xfrma)
1665 struct xfrm_state *x;
1667 struct xfrm_user_expire *ue = NLMSG_DATA(nlh);
1668 struct xfrm_usersa_info *p = &ue->state;
1670 x = xfrm_state_lookup(&p->id.daddr, p->id.spi, p->id.proto, p->family);
1676 spin_lock_bh(&x->lock);
1678 if (x->km.state != XFRM_STATE_VALID)
1680 km_state_expired(x, ue->hard, current->pid);
1683 __xfrm_state_delete(x);
1684 xfrm_audit_log(NETLINK_CB(skb).loginuid, NETLINK_CB(skb).sid,
1685 AUDIT_MAC_IPSEC_DELSA, 1, NULL, x);
1689 spin_unlock_bh(&x->lock);
1694 static int xfrm_add_acquire(struct sk_buff *skb, struct nlmsghdr *nlh,
1695 struct rtattr **xfrma)
1697 struct xfrm_policy *xp;
1698 struct xfrm_user_tmpl *ut;
1700 struct rtattr *rt = xfrma[XFRMA_TMPL-1];
1702 struct xfrm_user_acquire *ua = NLMSG_DATA(nlh);
1703 struct xfrm_state *x = xfrm_state_alloc();
1709 err = verify_newpolicy_info(&ua->policy);
1711 printk("BAD policy passed\n");
1717 xp = xfrm_policy_construct(&ua->policy, (struct rtattr **) xfrma, &err);
1723 memcpy(&x->id, &ua->id, sizeof(ua->id));
1724 memcpy(&x->props.saddr, &ua->saddr, sizeof(ua->saddr));
1725 memcpy(&x->sel, &ua->sel, sizeof(ua->sel));
1728 /* extract the templates and for each call km_key */
1729 for (i = 0; i < xp->xfrm_nr; i++, ut++) {
1730 struct xfrm_tmpl *t = &xp->xfrm_vec[i];
1731 memcpy(&x->id, &t->id, sizeof(x->id));
1732 x->props.mode = t->mode;
1733 x->props.reqid = t->reqid;
1734 x->props.family = ut->family;
1735 t->aalgos = ua->aalgos;
1736 t->ealgos = ua->ealgos;
1737 t->calgos = ua->calgos;
1738 err = km_query(x, t, xp);
1748 #ifdef CONFIG_XFRM_MIGRATE
1749 static int verify_user_migrate(struct rtattr **xfrma)
1751 struct rtattr *rt = xfrma[XFRMA_MIGRATE-1];
1752 struct xfrm_user_migrate *um;
1757 if ((rt->rta_len - sizeof(*rt)) < sizeof(*um))
1763 static int copy_from_user_migrate(struct xfrm_migrate *ma,
1764 struct rtattr **xfrma, int *num)
1766 struct rtattr *rt = xfrma[XFRMA_MIGRATE-1];
1767 struct xfrm_user_migrate *um;
1771 num_migrate = (rt->rta_len - sizeof(*rt)) / sizeof(*um);
1773 if (num_migrate <= 0 || num_migrate > XFRM_MAX_DEPTH)
1776 for (i = 0; i < num_migrate; i++, um++, ma++) {
1777 memcpy(&ma->old_daddr, &um->old_daddr, sizeof(ma->old_daddr));
1778 memcpy(&ma->old_saddr, &um->old_saddr, sizeof(ma->old_saddr));
1779 memcpy(&ma->new_daddr, &um->new_daddr, sizeof(ma->new_daddr));
1780 memcpy(&ma->new_saddr, &um->new_saddr, sizeof(ma->new_saddr));
1782 ma->proto = um->proto;
1783 ma->mode = um->mode;
1784 ma->reqid = um->reqid;
1786 ma->old_family = um->old_family;
1787 ma->new_family = um->new_family;
1794 static int xfrm_do_migrate(struct sk_buff *skb, struct nlmsghdr *nlh,
1795 struct rtattr **xfrma)
1797 struct xfrm_userpolicy_id *pi = NLMSG_DATA(nlh);
1798 struct xfrm_migrate m[XFRM_MAX_DEPTH];
1803 err = verify_user_migrate((struct rtattr **)xfrma);
1807 err = copy_from_user_policy_type(&type, (struct rtattr **)xfrma);
1811 err = copy_from_user_migrate((struct xfrm_migrate *)m,
1812 (struct rtattr **)xfrma, &n);
1819 xfrm_migrate(&pi->sel, pi->dir, type, m, n);
1824 static int xfrm_do_migrate(struct sk_buff *skb, struct nlmsghdr *nlh,
1825 struct rtattr **xfrma)
1827 return -ENOPROTOOPT;
1831 #ifdef CONFIG_XFRM_MIGRATE
1832 static int copy_to_user_migrate(struct xfrm_migrate *m, struct sk_buff *skb)
1834 struct xfrm_user_migrate um;
1836 memset(&um, 0, sizeof(um));
1837 um.proto = m->proto;
1839 um.reqid = m->reqid;
1840 um.old_family = m->old_family;
1841 memcpy(&um.old_daddr, &m->old_daddr, sizeof(um.old_daddr));
1842 memcpy(&um.old_saddr, &m->old_saddr, sizeof(um.old_saddr));
1843 um.new_family = m->new_family;
1844 memcpy(&um.new_daddr, &m->new_daddr, sizeof(um.new_daddr));
1845 memcpy(&um.new_saddr, &m->new_saddr, sizeof(um.new_saddr));
1847 RTA_PUT(skb, XFRMA_MIGRATE, sizeof(um), &um);
1854 static int build_migrate(struct sk_buff *skb, struct xfrm_migrate *m,
1855 int num_migrate, struct xfrm_selector *sel,
1858 struct xfrm_migrate *mp;
1859 struct xfrm_userpolicy_id *pol_id;
1860 struct nlmsghdr *nlh;
1863 nlh = nlmsg_put(skb, 0, 0, XFRM_MSG_MIGRATE, sizeof(*pol_id), 0);
1866 pol_id = NLMSG_DATA(nlh);
1868 /* copy data from selector, dir, and type to the pol_id */
1869 memset(pol_id, 0, sizeof(*pol_id));
1870 memcpy(&pol_id->sel, sel, sizeof(pol_id->sel));
1873 if (copy_to_user_policy_type(type, skb) < 0)
1876 for (i = 0, mp = m ; i < num_migrate; i++, mp++) {
1877 if (copy_to_user_migrate(mp, skb) < 0)
1881 return nlmsg_end(skb, nlh);
1883 nlmsg_cancel(skb, nlh);
1887 static int xfrm_send_migrate(struct xfrm_selector *sel, u8 dir, u8 type,
1888 struct xfrm_migrate *m, int num_migrate)
1890 struct sk_buff *skb;
1893 len = RTA_SPACE(sizeof(struct xfrm_user_migrate) * num_migrate);
1894 len += NLMSG_SPACE(sizeof(struct xfrm_userpolicy_id));
1895 #ifdef CONFIG_XFRM_SUB_POLICY
1896 len += RTA_SPACE(sizeof(struct xfrm_userpolicy_type));
1898 skb = alloc_skb(len, GFP_ATOMIC);
1903 if (build_migrate(skb, m, num_migrate, sel, dir, type) < 0)
1906 NETLINK_CB(skb).dst_group = XFRMNLGRP_MIGRATE;
1907 return netlink_broadcast(xfrm_nl, skb, 0, XFRMNLGRP_MIGRATE,
1911 static int xfrm_send_migrate(struct xfrm_selector *sel, u8 dir, u8 type,
1912 struct xfrm_migrate *m, int num_migrate)
1914 return -ENOPROTOOPT;
1918 #define XMSGSIZE(type) NLMSG_LENGTH(sizeof(struct type))
1920 static const int xfrm_msg_min[XFRM_NR_MSGTYPES] = {
1921 [XFRM_MSG_NEWSA - XFRM_MSG_BASE] = XMSGSIZE(xfrm_usersa_info),
1922 [XFRM_MSG_DELSA - XFRM_MSG_BASE] = XMSGSIZE(xfrm_usersa_id),
1923 [XFRM_MSG_GETSA - XFRM_MSG_BASE] = XMSGSIZE(xfrm_usersa_id),
1924 [XFRM_MSG_NEWPOLICY - XFRM_MSG_BASE] = XMSGSIZE(xfrm_userpolicy_info),
1925 [XFRM_MSG_DELPOLICY - XFRM_MSG_BASE] = XMSGSIZE(xfrm_userpolicy_id),
1926 [XFRM_MSG_GETPOLICY - XFRM_MSG_BASE] = XMSGSIZE(xfrm_userpolicy_id),
1927 [XFRM_MSG_ALLOCSPI - XFRM_MSG_BASE] = XMSGSIZE(xfrm_userspi_info),
1928 [XFRM_MSG_ACQUIRE - XFRM_MSG_BASE] = XMSGSIZE(xfrm_user_acquire),
1929 [XFRM_MSG_EXPIRE - XFRM_MSG_BASE] = XMSGSIZE(xfrm_user_expire),
1930 [XFRM_MSG_UPDPOLICY - XFRM_MSG_BASE] = XMSGSIZE(xfrm_userpolicy_info),
1931 [XFRM_MSG_UPDSA - XFRM_MSG_BASE] = XMSGSIZE(xfrm_usersa_info),
1932 [XFRM_MSG_POLEXPIRE - XFRM_MSG_BASE] = XMSGSIZE(xfrm_user_polexpire),
1933 [XFRM_MSG_FLUSHSA - XFRM_MSG_BASE] = XMSGSIZE(xfrm_usersa_flush),
1934 [XFRM_MSG_FLUSHPOLICY - XFRM_MSG_BASE] = NLMSG_LENGTH(0),
1935 [XFRM_MSG_NEWAE - XFRM_MSG_BASE] = XMSGSIZE(xfrm_aevent_id),
1936 [XFRM_MSG_GETAE - XFRM_MSG_BASE] = XMSGSIZE(xfrm_aevent_id),
1937 [XFRM_MSG_REPORT - XFRM_MSG_BASE] = XMSGSIZE(xfrm_user_report),
1938 [XFRM_MSG_MIGRATE - XFRM_MSG_BASE] = XMSGSIZE(xfrm_userpolicy_id),
1939 [XFRM_MSG_GETSADINFO - XFRM_MSG_BASE] = NLMSG_LENGTH(sizeof(u32)),
1940 [XFRM_MSG_GETSPDINFO - XFRM_MSG_BASE] = NLMSG_LENGTH(sizeof(u32)),
1945 static struct xfrm_link {
1946 int (*doit)(struct sk_buff *, struct nlmsghdr *, struct rtattr **);
1947 int (*dump)(struct sk_buff *, struct netlink_callback *);
1948 } xfrm_dispatch[XFRM_NR_MSGTYPES] = {
1949 [XFRM_MSG_NEWSA - XFRM_MSG_BASE] = { .doit = xfrm_add_sa },
1950 [XFRM_MSG_DELSA - XFRM_MSG_BASE] = { .doit = xfrm_del_sa },
1951 [XFRM_MSG_GETSA - XFRM_MSG_BASE] = { .doit = xfrm_get_sa,
1952 .dump = xfrm_dump_sa },
1953 [XFRM_MSG_NEWPOLICY - XFRM_MSG_BASE] = { .doit = xfrm_add_policy },
1954 [XFRM_MSG_DELPOLICY - XFRM_MSG_BASE] = { .doit = xfrm_get_policy },
1955 [XFRM_MSG_GETPOLICY - XFRM_MSG_BASE] = { .doit = xfrm_get_policy,
1956 .dump = xfrm_dump_policy },
1957 [XFRM_MSG_ALLOCSPI - XFRM_MSG_BASE] = { .doit = xfrm_alloc_userspi },
1958 [XFRM_MSG_ACQUIRE - XFRM_MSG_BASE] = { .doit = xfrm_add_acquire },
1959 [XFRM_MSG_EXPIRE - XFRM_MSG_BASE] = { .doit = xfrm_add_sa_expire },
1960 [XFRM_MSG_UPDPOLICY - XFRM_MSG_BASE] = { .doit = xfrm_add_policy },
1961 [XFRM_MSG_UPDSA - XFRM_MSG_BASE] = { .doit = xfrm_add_sa },
1962 [XFRM_MSG_POLEXPIRE - XFRM_MSG_BASE] = { .doit = xfrm_add_pol_expire},
1963 [XFRM_MSG_FLUSHSA - XFRM_MSG_BASE] = { .doit = xfrm_flush_sa },
1964 [XFRM_MSG_FLUSHPOLICY - XFRM_MSG_BASE] = { .doit = xfrm_flush_policy },
1965 [XFRM_MSG_NEWAE - XFRM_MSG_BASE] = { .doit = xfrm_new_ae },
1966 [XFRM_MSG_GETAE - XFRM_MSG_BASE] = { .doit = xfrm_get_ae },
1967 [XFRM_MSG_MIGRATE - XFRM_MSG_BASE] = { .doit = xfrm_do_migrate },
1968 [XFRM_MSG_GETSADINFO - XFRM_MSG_BASE] = { .doit = xfrm_get_sadinfo },
1969 [XFRM_MSG_GETSPDINFO - XFRM_MSG_BASE] = { .doit = xfrm_get_spdinfo },
1972 static int xfrm_user_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
1974 struct rtattr *xfrma[XFRMA_MAX];
1975 struct xfrm_link *link;
1978 type = nlh->nlmsg_type;
1979 if (type > XFRM_MSG_MAX)
1982 type -= XFRM_MSG_BASE;
1983 link = &xfrm_dispatch[type];
1985 /* All operations require privileges, even GET */
1986 if (security_netlink_recv(skb, CAP_NET_ADMIN))
1989 if ((type == (XFRM_MSG_GETSA - XFRM_MSG_BASE) ||
1990 type == (XFRM_MSG_GETPOLICY - XFRM_MSG_BASE)) &&
1991 (nlh->nlmsg_flags & NLM_F_DUMP)) {
1992 if (link->dump == NULL)
1995 return netlink_dump_start(xfrm_nl, skb, nlh, link->dump, NULL);
1998 memset(xfrma, 0, sizeof(xfrma));
2000 if (nlh->nlmsg_len < (min_len = xfrm_msg_min[type]))
2003 if (nlh->nlmsg_len > min_len) {
2004 int attrlen = nlh->nlmsg_len - NLMSG_ALIGN(min_len);
2005 struct rtattr *attr = (void *) nlh + NLMSG_ALIGN(min_len);
2007 while (RTA_OK(attr, attrlen)) {
2008 unsigned short flavor = attr->rta_type;
2010 if (flavor > XFRMA_MAX)
2012 xfrma[flavor - 1] = attr;
2014 attr = RTA_NEXT(attr, attrlen);
2018 if (link->doit == NULL)
2021 return link->doit(skb, nlh, xfrma);
2024 static void xfrm_netlink_rcv(struct sock *sk, int len)
2026 unsigned int qlen = 0;
2029 mutex_lock(&xfrm_cfg_mutex);
2030 netlink_run_queue(sk, &qlen, &xfrm_user_rcv_msg);
2031 mutex_unlock(&xfrm_cfg_mutex);
2036 static int build_expire(struct sk_buff *skb, struct xfrm_state *x, struct km_event *c)
2038 struct xfrm_user_expire *ue;
2039 struct nlmsghdr *nlh;
2041 nlh = nlmsg_put(skb, c->pid, 0, XFRM_MSG_EXPIRE, sizeof(*ue), 0);
2044 ue = NLMSG_DATA(nlh);
2046 copy_to_user_state(x, &ue->state);
2047 ue->hard = (c->data.hard != 0) ? 1 : 0;
2049 return nlmsg_end(skb, nlh);
2052 static int xfrm_exp_state_notify(struct xfrm_state *x, struct km_event *c)
2054 struct sk_buff *skb;
2055 int len = NLMSG_LENGTH(sizeof(struct xfrm_user_expire));
2057 skb = alloc_skb(len, GFP_ATOMIC);
2061 if (build_expire(skb, x, c) < 0)
2064 NETLINK_CB(skb).dst_group = XFRMNLGRP_EXPIRE;
2065 return netlink_broadcast(xfrm_nl, skb, 0, XFRMNLGRP_EXPIRE, GFP_ATOMIC);
2068 static int xfrm_aevent_state_notify(struct xfrm_state *x, struct km_event *c)
2070 struct sk_buff *skb;
2071 int len = NLMSG_LENGTH(sizeof(struct xfrm_aevent_id));
2073 len += RTA_SPACE(sizeof(struct xfrm_replay_state));
2074 len += RTA_SPACE(sizeof(struct xfrm_lifetime_cur));
2075 skb = alloc_skb(len, GFP_ATOMIC);
2079 if (build_aevent(skb, x, c) < 0)
2082 NETLINK_CB(skb).dst_group = XFRMNLGRP_AEVENTS;
2083 return netlink_broadcast(xfrm_nl, skb, 0, XFRMNLGRP_AEVENTS, GFP_ATOMIC);
2086 static int xfrm_notify_sa_flush(struct km_event *c)
2088 struct xfrm_usersa_flush *p;
2089 struct nlmsghdr *nlh;
2090 struct sk_buff *skb;
2091 int len = NLMSG_LENGTH(sizeof(struct xfrm_usersa_flush));
2093 skb = alloc_skb(len, GFP_ATOMIC);
2097 nlh = nlmsg_put(skb, c->pid, c->seq, XFRM_MSG_FLUSHSA, sizeof(*p), 0);
2103 p = NLMSG_DATA(nlh);
2104 p->proto = c->data.proto;
2106 nlmsg_end(skb, nlh);
2108 NETLINK_CB(skb).dst_group = XFRMNLGRP_SA;
2109 return netlink_broadcast(xfrm_nl, skb, 0, XFRMNLGRP_SA, GFP_ATOMIC);
2112 static inline int xfrm_sa_len(struct xfrm_state *x)
2116 l += RTA_SPACE(sizeof(*x->aalg) + (x->aalg->alg_key_len+7)/8);
2118 l += RTA_SPACE(sizeof(*x->ealg) + (x->ealg->alg_key_len+7)/8);
2120 l += RTA_SPACE(sizeof(*x->calg));
2122 l += RTA_SPACE(sizeof(*x->encap));
2127 static int xfrm_notify_sa(struct xfrm_state *x, struct km_event *c)
2129 struct xfrm_usersa_info *p;
2130 struct xfrm_usersa_id *id;
2131 struct nlmsghdr *nlh;
2132 struct sk_buff *skb;
2133 int len = xfrm_sa_len(x);
2136 headlen = sizeof(*p);
2137 if (c->event == XFRM_MSG_DELSA) {
2138 len += RTA_SPACE(headlen);
2139 headlen = sizeof(*id);
2141 len += NLMSG_SPACE(headlen);
2143 skb = alloc_skb(len, GFP_ATOMIC);
2147 nlh = nlmsg_put(skb, c->pid, c->seq, c->event, headlen, 0);
2151 p = NLMSG_DATA(nlh);
2152 if (c->event == XFRM_MSG_DELSA) {
2153 id = NLMSG_DATA(nlh);
2154 memcpy(&id->daddr, &x->id.daddr, sizeof(id->daddr));
2155 id->spi = x->id.spi;
2156 id->family = x->props.family;
2157 id->proto = x->id.proto;
2159 p = RTA_DATA(__RTA_PUT(skb, XFRMA_SA, sizeof(*p)));
2162 copy_to_user_state(x, p);
2165 RTA_PUT(skb, XFRMA_ALG_AUTH,
2166 sizeof(*(x->aalg))+(x->aalg->alg_key_len+7)/8, x->aalg);
2168 RTA_PUT(skb, XFRMA_ALG_CRYPT,
2169 sizeof(*(x->ealg))+(x->ealg->alg_key_len+7)/8, x->ealg);
2171 RTA_PUT(skb, XFRMA_ALG_COMP, sizeof(*(x->calg)), x->calg);
2174 RTA_PUT(skb, XFRMA_ENCAP, sizeof(*x->encap), x->encap);
2176 nlmsg_end(skb, nlh);
2178 NETLINK_CB(skb).dst_group = XFRMNLGRP_SA;
2179 return netlink_broadcast(xfrm_nl, skb, 0, XFRMNLGRP_SA, GFP_ATOMIC);
2187 static int xfrm_send_state_notify(struct xfrm_state *x, struct km_event *c)
2191 case XFRM_MSG_EXPIRE:
2192 return xfrm_exp_state_notify(x, c);
2193 case XFRM_MSG_NEWAE:
2194 return xfrm_aevent_state_notify(x, c);
2195 case XFRM_MSG_DELSA:
2196 case XFRM_MSG_UPDSA:
2197 case XFRM_MSG_NEWSA:
2198 return xfrm_notify_sa(x, c);
2199 case XFRM_MSG_FLUSHSA:
2200 return xfrm_notify_sa_flush(c);
2202 printk("xfrm_user: Unknown SA event %d\n", c->event);
2210 static int build_acquire(struct sk_buff *skb, struct xfrm_state *x,
2211 struct xfrm_tmpl *xt, struct xfrm_policy *xp,
2214 struct xfrm_user_acquire *ua;
2215 struct nlmsghdr *nlh;
2216 __u32 seq = xfrm_get_acqseq();
2218 nlh = nlmsg_put(skb, 0, 0, XFRM_MSG_ACQUIRE, sizeof(*ua), 0);
2221 ua = NLMSG_DATA(nlh);
2223 memcpy(&ua->id, &x->id, sizeof(ua->id));
2224 memcpy(&ua->saddr, &x->props.saddr, sizeof(ua->saddr));
2225 memcpy(&ua->sel, &x->sel, sizeof(ua->sel));
2226 copy_to_user_policy(xp, &ua->policy, dir);
2227 ua->aalgos = xt->aalgos;
2228 ua->ealgos = xt->ealgos;
2229 ua->calgos = xt->calgos;
2230 ua->seq = x->km.seq = seq;
2232 if (copy_to_user_tmpl(xp, skb) < 0)
2234 if (copy_to_user_state_sec_ctx(x, skb))
2236 if (copy_to_user_policy_type(xp->type, skb) < 0)
2239 return nlmsg_end(skb, nlh);
2242 nlmsg_cancel(skb, nlh);
2246 static int xfrm_send_acquire(struct xfrm_state *x, struct xfrm_tmpl *xt,
2247 struct xfrm_policy *xp, int dir)
2249 struct sk_buff *skb;
2252 len = RTA_SPACE(sizeof(struct xfrm_user_tmpl) * xp->xfrm_nr);
2253 len += NLMSG_SPACE(sizeof(struct xfrm_user_acquire));
2254 len += RTA_SPACE(xfrm_user_sec_ctx_size(x->security));
2255 #ifdef CONFIG_XFRM_SUB_POLICY
2256 len += RTA_SPACE(sizeof(struct xfrm_userpolicy_type));
2258 skb = alloc_skb(len, GFP_ATOMIC);
2262 if (build_acquire(skb, x, xt, xp, dir) < 0)
2265 NETLINK_CB(skb).dst_group = XFRMNLGRP_ACQUIRE;
2266 return netlink_broadcast(xfrm_nl, skb, 0, XFRMNLGRP_ACQUIRE, GFP_ATOMIC);
2269 /* User gives us xfrm_user_policy_info followed by an array of 0
2270 * or more templates.
2272 static struct xfrm_policy *xfrm_compile_policy(struct sock *sk, int opt,
2273 u8 *data, int len, int *dir)
2275 struct xfrm_userpolicy_info *p = (struct xfrm_userpolicy_info *)data;
2276 struct xfrm_user_tmpl *ut = (struct xfrm_user_tmpl *) (p + 1);
2277 struct xfrm_policy *xp;
2280 switch (sk->sk_family) {
2282 if (opt != IP_XFRM_POLICY) {
2287 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
2289 if (opt != IPV6_XFRM_POLICY) {
2302 if (len < sizeof(*p) ||
2303 verify_newpolicy_info(p))
2306 nr = ((len - sizeof(*p)) / sizeof(*ut));
2307 if (validate_tmpl(nr, ut, p->sel.family))
2310 if (p->dir > XFRM_POLICY_OUT)
2313 xp = xfrm_policy_alloc(GFP_KERNEL);
2319 copy_from_user_policy(xp, p);
2320 xp->type = XFRM_POLICY_TYPE_MAIN;
2321 copy_templates(xp, ut, nr);
2328 static int build_polexpire(struct sk_buff *skb, struct xfrm_policy *xp,
2329 int dir, struct km_event *c)
2331 struct xfrm_user_polexpire *upe;
2332 struct nlmsghdr *nlh;
2333 int hard = c->data.hard;
2335 nlh = nlmsg_put(skb, c->pid, 0, XFRM_MSG_POLEXPIRE, sizeof(*upe), 0);
2338 upe = NLMSG_DATA(nlh);
2340 copy_to_user_policy(xp, &upe->pol, dir);
2341 if (copy_to_user_tmpl(xp, skb) < 0)
2343 if (copy_to_user_sec_ctx(xp, skb))
2345 if (copy_to_user_policy_type(xp->type, skb) < 0)
2349 return nlmsg_end(skb, nlh);
2352 nlmsg_cancel(skb, nlh);
2356 static int xfrm_exp_policy_notify(struct xfrm_policy *xp, int dir, struct km_event *c)
2358 struct sk_buff *skb;
2361 len = RTA_SPACE(sizeof(struct xfrm_user_tmpl) * xp->xfrm_nr);
2362 len += NLMSG_SPACE(sizeof(struct xfrm_user_polexpire));
2363 len += RTA_SPACE(xfrm_user_sec_ctx_size(xp->security));
2364 #ifdef CONFIG_XFRM_SUB_POLICY
2365 len += RTA_SPACE(sizeof(struct xfrm_userpolicy_type));
2367 skb = alloc_skb(len, GFP_ATOMIC);
2371 if (build_polexpire(skb, xp, dir, c) < 0)
2374 NETLINK_CB(skb).dst_group = XFRMNLGRP_EXPIRE;
2375 return netlink_broadcast(xfrm_nl, skb, 0, XFRMNLGRP_EXPIRE, GFP_ATOMIC);
2378 static int xfrm_notify_policy(struct xfrm_policy *xp, int dir, struct km_event *c)
2380 struct xfrm_userpolicy_info *p;
2381 struct xfrm_userpolicy_id *id;
2382 struct nlmsghdr *nlh;
2383 struct sk_buff *skb;
2384 int len = RTA_SPACE(sizeof(struct xfrm_user_tmpl) * xp->xfrm_nr);
2387 headlen = sizeof(*p);
2388 if (c->event == XFRM_MSG_DELPOLICY) {
2389 len += RTA_SPACE(headlen);
2390 headlen = sizeof(*id);
2392 #ifdef CONFIG_XFRM_SUB_POLICY
2393 len += RTA_SPACE(sizeof(struct xfrm_userpolicy_type));
2395 len += NLMSG_SPACE(headlen);
2397 skb = alloc_skb(len, GFP_ATOMIC);
2401 nlh = nlmsg_put(skb, c->pid, c->seq, c->event, headlen, 0);
2405 p = NLMSG_DATA(nlh);
2406 if (c->event == XFRM_MSG_DELPOLICY) {
2407 id = NLMSG_DATA(nlh);
2408 memset(id, 0, sizeof(*id));
2411 id->index = xp->index;
2413 memcpy(&id->sel, &xp->selector, sizeof(id->sel));
2415 p = RTA_DATA(__RTA_PUT(skb, XFRMA_POLICY, sizeof(*p)));
2418 copy_to_user_policy(xp, p, dir);
2419 if (copy_to_user_tmpl(xp, skb) < 0)
2421 if (copy_to_user_policy_type(xp->type, skb) < 0)
2424 nlmsg_end(skb, nlh);
2426 NETLINK_CB(skb).dst_group = XFRMNLGRP_POLICY;
2427 return netlink_broadcast(xfrm_nl, skb, 0, XFRMNLGRP_POLICY, GFP_ATOMIC);
2435 static int xfrm_notify_policy_flush(struct km_event *c)
2437 struct nlmsghdr *nlh;
2438 struct sk_buff *skb;
2440 #ifdef CONFIG_XFRM_SUB_POLICY
2441 len += RTA_SPACE(sizeof(struct xfrm_userpolicy_type));
2443 len += NLMSG_LENGTH(0);
2445 skb = alloc_skb(len, GFP_ATOMIC);
2449 nlh = nlmsg_put(skb, c->pid, c->seq, XFRM_MSG_FLUSHPOLICY, 0, 0);
2452 if (copy_to_user_policy_type(c->data.type, skb) < 0)
2455 nlmsg_end(skb, nlh);
2457 NETLINK_CB(skb).dst_group = XFRMNLGRP_POLICY;
2458 return netlink_broadcast(xfrm_nl, skb, 0, XFRMNLGRP_POLICY, GFP_ATOMIC);
2465 static int xfrm_send_policy_notify(struct xfrm_policy *xp, int dir, struct km_event *c)
2469 case XFRM_MSG_NEWPOLICY:
2470 case XFRM_MSG_UPDPOLICY:
2471 case XFRM_MSG_DELPOLICY:
2472 return xfrm_notify_policy(xp, dir, c);
2473 case XFRM_MSG_FLUSHPOLICY:
2474 return xfrm_notify_policy_flush(c);
2475 case XFRM_MSG_POLEXPIRE:
2476 return xfrm_exp_policy_notify(xp, dir, c);
2478 printk("xfrm_user: Unknown Policy event %d\n", c->event);
2485 static int build_report(struct sk_buff *skb, u8 proto,
2486 struct xfrm_selector *sel, xfrm_address_t *addr)
2488 struct xfrm_user_report *ur;
2489 struct nlmsghdr *nlh;
2491 nlh = nlmsg_put(skb, 0, 0, XFRM_MSG_REPORT, sizeof(*ur), 0);
2494 ur = NLMSG_DATA(nlh);
2497 memcpy(&ur->sel, sel, sizeof(ur->sel));
2500 RTA_PUT(skb, XFRMA_COADDR, sizeof(*addr), addr);
2502 return nlmsg_end(skb, nlh);
2505 nlmsg_cancel(skb, nlh);
2509 static int xfrm_send_report(u8 proto, struct xfrm_selector *sel,
2510 xfrm_address_t *addr)
2512 struct sk_buff *skb;
2515 len = NLMSG_ALIGN(NLMSG_LENGTH(sizeof(struct xfrm_user_report)));
2516 skb = alloc_skb(len, GFP_ATOMIC);
2520 if (build_report(skb, proto, sel, addr) < 0)
2523 NETLINK_CB(skb).dst_group = XFRMNLGRP_REPORT;
2524 return netlink_broadcast(xfrm_nl, skb, 0, XFRMNLGRP_REPORT, GFP_ATOMIC);
2527 static struct xfrm_mgr netlink_mgr = {
2529 .notify = xfrm_send_state_notify,
2530 .acquire = xfrm_send_acquire,
2531 .compile_policy = xfrm_compile_policy,
2532 .notify_policy = xfrm_send_policy_notify,
2533 .report = xfrm_send_report,
2534 .migrate = xfrm_send_migrate,
2537 static int __init xfrm_user_init(void)
2541 printk(KERN_INFO "Initializing XFRM netlink socket\n");
2543 nlsk = netlink_kernel_create(NETLINK_XFRM, XFRMNLGRP_MAX,
2544 xfrm_netlink_rcv, NULL, THIS_MODULE);
2547 rcu_assign_pointer(xfrm_nl, nlsk);
2549 xfrm_register_km(&netlink_mgr);
2554 static void __exit xfrm_user_exit(void)
2556 struct sock *nlsk = xfrm_nl;
2558 xfrm_unregister_km(&netlink_mgr);
2559 rcu_assign_pointer(xfrm_nl, NULL);
2561 sock_release(nlsk->sk_socket);
2564 module_init(xfrm_user_init);
2565 module_exit(xfrm_user_exit);
2566 MODULE_LICENSE("GPL");
2567 MODULE_ALIAS_NET_PF_PROTO(PF_NETLINK, NETLINK_XFRM);