2 * IPv6 BSD socket options interface
3 * Linux INET6 implementation
6 * Pedro Roque <roque@di.fc.ul.pt>
8 * Based on linux/net/ipv4/ip_sockglue.c
10 * $Id: ipv6_sockglue.c,v 1.41 2002/02/01 22:01:04 davem Exp $
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version
15 * 2 of the License, or (at your option) any later version.
17 * FIXME: Make the setsockopt code POSIX compliant: That is
19 * o Return -EINVAL for setsockopt of short lengths
20 * o Truncate getsockopt returns
21 * o Return an optlen of the truncated length if need be
24 * David L Stevens <dlstevens@us.ibm.com>:
25 * - added multicast source filtering API for MLDv2
28 #include <linux/module.h>
29 #include <linux/capability.h>
30 #include <linux/errno.h>
31 #include <linux/types.h>
32 #include <linux/socket.h>
33 #include <linux/sockios.h>
34 #include <linux/sched.h>
35 #include <linux/net.h>
36 #include <linux/in6.h>
37 #include <linux/netdevice.h>
38 #include <linux/if_arp.h>
39 #include <linux/init.h>
40 #include <linux/sysctl.h>
41 #include <linux/netfilter.h>
46 #include <net/ndisc.h>
47 #include <net/protocol.h>
48 #include <net/transp_v6.h>
49 #include <net/ip6_route.h>
50 #include <net/addrconf.h>
51 #include <net/inet_common.h>
56 #include <asm/uaccess.h>
58 DEFINE_SNMP_STAT(struct ipstats_mib, ipv6_statistics) __read_mostly;
60 static struct inet6_protocol *ipv6_gso_pull_exthdrs(struct sk_buff *skb,
63 struct inet6_protocol *ops = NULL;
66 struct ipv6_opt_hdr *opth;
69 if (proto != NEXTHDR_HOP) {
70 ops = rcu_dereference(inet6_protos[proto]);
75 if (!(ops->flags & INET6_PROTO_GSO_EXTHDR))
79 if (unlikely(!pskb_may_pull(skb, 8)))
82 opth = (void *)skb->data;
83 len = opth->hdrlen * 8 + 8;
85 if (unlikely(!pskb_may_pull(skb, len)))
88 proto = opth->nexthdr;
95 static int ipv6_gso_send_check(struct sk_buff *skb)
97 struct ipv6hdr *ipv6h;
98 struct inet6_protocol *ops;
101 if (unlikely(!pskb_may_pull(skb, sizeof(*ipv6h))))
104 ipv6h = skb->nh.ipv6h;
105 __skb_pull(skb, sizeof(*ipv6h));
106 err = -EPROTONOSUPPORT;
109 ops = ipv6_gso_pull_exthdrs(skb, ipv6h->nexthdr);
110 if (likely(ops && ops->gso_send_check)) {
111 skb->h.raw = skb->data;
112 err = ops->gso_send_check(skb);
120 static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb, int features)
122 struct sk_buff *segs = ERR_PTR(-EINVAL);
123 struct ipv6hdr *ipv6h;
124 struct inet6_protocol *ops;
126 if (unlikely(skb_shinfo(skb)->gso_type &
134 if (unlikely(!pskb_may_pull(skb, sizeof(*ipv6h))))
137 ipv6h = skb->nh.ipv6h;
138 __skb_pull(skb, sizeof(*ipv6h));
139 segs = ERR_PTR(-EPROTONOSUPPORT);
142 ops = ipv6_gso_pull_exthdrs(skb, ipv6h->nexthdr);
143 if (likely(ops && ops->gso_segment)) {
144 skb->h.raw = skb->data;
145 segs = ops->gso_segment(skb, features);
149 if (unlikely(IS_ERR(segs)))
152 for (skb = segs; skb; skb = skb->next) {
153 ipv6h = skb->nh.ipv6h;
154 ipv6h->payload_len = htons(skb->len - skb->mac_len -
162 static struct packet_type ipv6_packet_type = {
163 .type = __constant_htons(ETH_P_IPV6),
165 .gso_send_check = ipv6_gso_send_check,
166 .gso_segment = ipv6_gso_segment,
169 struct ip6_ra_chain *ip6_ra_chain;
170 DEFINE_RWLOCK(ip6_ra_lock);
172 int ip6_ra_control(struct sock *sk, int sel, void (*destructor)(struct sock *))
174 struct ip6_ra_chain *ra, *new_ra, **rap;
176 /* RA packet may be delivered ONLY to IPPROTO_RAW socket */
177 if (sk->sk_type != SOCK_RAW || inet_sk(sk)->num != IPPROTO_RAW)
180 new_ra = (sel>=0) ? kmalloc(sizeof(*new_ra), GFP_KERNEL) : NULL;
182 write_lock_bh(&ip6_ra_lock);
183 for (rap = &ip6_ra_chain; (ra=*rap) != NULL; rap = &ra->next) {
186 write_unlock_bh(&ip6_ra_lock);
192 write_unlock_bh(&ip6_ra_lock);
201 if (new_ra == NULL) {
202 write_unlock_bh(&ip6_ra_lock);
207 new_ra->destructor = destructor;
211 write_unlock_bh(&ip6_ra_lock);
215 static int do_ipv6_setsockopt(struct sock *sk, int level, int optname,
216 char __user *optval, int optlen)
218 struct ipv6_pinfo *np = inet6_sk(sk);
220 int retv = -ENOPROTOOPT;
224 else if (get_user(val, (int __user *) optval))
234 if (val == PF_INET) {
235 struct ipv6_txoptions *opt;
236 struct sk_buff *pktopt;
238 if (sk->sk_protocol != IPPROTO_UDP &&
239 sk->sk_protocol != IPPROTO_TCP)
242 if (sk->sk_state != TCP_ESTABLISHED) {
247 if (ipv6_only_sock(sk) ||
248 !(ipv6_addr_type(&np->daddr) & IPV6_ADDR_MAPPED)) {
249 retv = -EADDRNOTAVAIL;
253 fl6_free_socklist(sk);
254 ipv6_sock_mc_close(sk);
257 * Sock is moving from IPv6 to IPv4 (sk_prot), so
258 * remove it from the refcnt debug socks count in the
261 sk_refcnt_debug_dec(sk);
263 if (sk->sk_protocol == IPPROTO_TCP) {
264 struct inet_connection_sock *icsk = inet_csk(sk);
267 sock_prot_dec_use(sk->sk_prot);
268 sock_prot_inc_use(&tcp_prot);
270 sk->sk_prot = &tcp_prot;
271 icsk->icsk_af_ops = &ipv4_specific;
272 sk->sk_socket->ops = &inet_stream_ops;
273 sk->sk_family = PF_INET;
274 tcp_sync_mss(sk, icsk->icsk_pmtu_cookie);
277 sock_prot_dec_use(sk->sk_prot);
278 sock_prot_inc_use(&udp_prot);
280 sk->sk_prot = &udp_prot;
281 sk->sk_socket->ops = &inet_dgram_ops;
282 sk->sk_family = PF_INET;
284 opt = xchg(&np->opt, NULL);
286 sock_kfree_s(sk, opt, opt->tot_len);
287 pktopt = xchg(&np->pktoptions, NULL);
291 sk->sk_destruct = inet_sock_destruct;
293 * ... and add it to the refcnt debug socks count
294 * in the new family. -acme
296 sk_refcnt_debug_inc(sk);
297 module_put(THIS_MODULE);
304 if (inet_sk(sk)->num)
306 np->ipv6only = valbool;
310 case IPV6_RECVPKTINFO:
311 np->rxopt.bits.rxinfo = valbool;
315 case IPV6_2292PKTINFO:
316 np->rxopt.bits.rxoinfo = valbool;
320 case IPV6_RECVHOPLIMIT:
321 np->rxopt.bits.rxhlim = valbool;
325 case IPV6_2292HOPLIMIT:
326 np->rxopt.bits.rxohlim = valbool;
331 if (val < 0 || val > 2)
333 np->rxopt.bits.srcrt = val;
338 if (val < 0 || val > 2)
340 np->rxopt.bits.osrcrt = val;
344 case IPV6_RECVHOPOPTS:
345 np->rxopt.bits.hopopts = valbool;
349 case IPV6_2292HOPOPTS:
350 np->rxopt.bits.ohopopts = valbool;
354 case IPV6_RECVDSTOPTS:
355 np->rxopt.bits.dstopts = valbool;
359 case IPV6_2292DSTOPTS:
360 np->rxopt.bits.odstopts = valbool;
365 if (val < -1 || val > 0xff)
371 case IPV6_RECVTCLASS:
372 np->rxopt.bits.rxtclass = valbool;
377 np->rxopt.bits.rxflow = valbool;
382 case IPV6_RTHDRDSTOPTS:
386 struct ipv6_txoptions *opt;
390 /* hop-by-hop / destination options are privileged option */
392 if (optname != IPV6_RTHDR && !capable(CAP_NET_RAW))
396 if (optlen & 0x7 || optlen > 8 * 255)
399 opt = ipv6_renew_options(sk, np->opt, optname,
400 (struct ipv6_opt_hdr __user *)optval,
407 /* routing header option needs extra check */
408 if (optname == IPV6_RTHDR && opt->srcrt) {
409 struct ipv6_rt_hdr *rthdr = opt->srcrt;
410 switch (rthdr->type) {
411 case IPV6_SRCRT_TYPE_0:
412 #ifdef CONFIG_IPV6_MIP6
413 case IPV6_SRCRT_TYPE_2:
420 if ((rthdr->hdrlen & 1) ||
421 (rthdr->hdrlen >> 1) != rthdr->segments_left)
426 if (inet_sk(sk)->is_icsk) {
428 struct inet_connection_sock *icsk = inet_csk(sk);
429 if (!((1 << sk->sk_state) &
430 (TCPF_LISTEN | TCPF_CLOSE))
431 && inet_sk(sk)->daddr != LOOPBACK4_IPV6) {
432 icsk->icsk_ext_hdr_len =
433 opt->opt_flen + opt->opt_nflen;
434 icsk->icsk_sync_mss(sk, icsk->icsk_pmtu_cookie);
437 opt = xchg(&np->opt, opt);
440 write_lock(&sk->sk_dst_lock);
441 opt = xchg(&np->opt, opt);
442 write_unlock(&sk->sk_dst_lock);
447 sock_kfree_s(sk, opt, opt->tot_len);
451 case IPV6_2292PKTOPTIONS:
453 struct ipv6_txoptions *opt = NULL;
458 fl.fl6_flowlabel = 0;
459 fl.oif = sk->sk_bound_dev_if;
464 /* 1K is probably excessive
465 * 1K is surely not enough, 2K per standard header is 16K.
468 if (optlen > 64*1024)
471 opt = sock_kmalloc(sk, sizeof(*opt) + optlen, GFP_KERNEL);
476 memset(opt, 0, sizeof(*opt));
477 opt->tot_len = sizeof(*opt) + optlen;
479 if (copy_from_user(opt+1, optval, optlen))
482 msg.msg_controllen = optlen;
483 msg.msg_control = (void*)(opt+1);
485 retv = datagram_send_ctl(&msg, &fl, opt, &junk, &junk);
490 if (inet_sk(sk)->is_icsk) {
492 struct inet_connection_sock *icsk = inet_csk(sk);
493 if (!((1 << sk->sk_state) &
494 (TCPF_LISTEN | TCPF_CLOSE))
495 && inet_sk(sk)->daddr != LOOPBACK4_IPV6) {
496 icsk->icsk_ext_hdr_len =
497 opt->opt_flen + opt->opt_nflen;
498 icsk->icsk_sync_mss(sk, icsk->icsk_pmtu_cookie);
501 opt = xchg(&np->opt, opt);
504 write_lock(&sk->sk_dst_lock);
505 opt = xchg(&np->opt, opt);
506 write_unlock(&sk->sk_dst_lock);
512 sock_kfree_s(sk, opt, opt->tot_len);
515 case IPV6_UNICAST_HOPS:
516 if (val > 255 || val < -1)
522 case IPV6_MULTICAST_HOPS:
523 if (sk->sk_type == SOCK_STREAM)
525 if (val > 255 || val < -1)
527 np->mcast_hops = val;
531 case IPV6_MULTICAST_LOOP:
532 np->mc_loop = valbool;
536 case IPV6_MULTICAST_IF:
537 if (sk->sk_type == SOCK_STREAM)
539 if (sk->sk_bound_dev_if && sk->sk_bound_dev_if != val)
542 if (__dev_get_by_index(val) == NULL) {
549 case IPV6_ADD_MEMBERSHIP:
550 case IPV6_DROP_MEMBERSHIP:
552 struct ipv6_mreq mreq;
555 if (copy_from_user(&mreq, optval, sizeof(struct ipv6_mreq)))
558 if (optname == IPV6_ADD_MEMBERSHIP)
559 retv = ipv6_sock_mc_join(sk, mreq.ipv6mr_ifindex, &mreq.ipv6mr_multiaddr);
561 retv = ipv6_sock_mc_drop(sk, mreq.ipv6mr_ifindex, &mreq.ipv6mr_multiaddr);
564 case IPV6_JOIN_ANYCAST:
565 case IPV6_LEAVE_ANYCAST:
567 struct ipv6_mreq mreq;
569 if (optlen != sizeof(struct ipv6_mreq))
573 if (copy_from_user(&mreq, optval, sizeof(struct ipv6_mreq)))
576 if (optname == IPV6_JOIN_ANYCAST)
577 retv = ipv6_sock_ac_join(sk, mreq.ipv6mr_ifindex, &mreq.ipv6mr_acaddr);
579 retv = ipv6_sock_ac_drop(sk, mreq.ipv6mr_ifindex, &mreq.ipv6mr_acaddr);
582 case MCAST_JOIN_GROUP:
583 case MCAST_LEAVE_GROUP:
585 struct group_req greq;
586 struct sockaddr_in6 *psin6;
589 if (copy_from_user(&greq, optval, sizeof(struct group_req)))
591 if (greq.gr_group.ss_family != AF_INET6) {
592 retv = -EADDRNOTAVAIL;
595 psin6 = (struct sockaddr_in6 *)&greq.gr_group;
596 if (optname == MCAST_JOIN_GROUP)
597 retv = ipv6_sock_mc_join(sk, greq.gr_interface,
600 retv = ipv6_sock_mc_drop(sk, greq.gr_interface,
604 case MCAST_JOIN_SOURCE_GROUP:
605 case MCAST_LEAVE_SOURCE_GROUP:
606 case MCAST_BLOCK_SOURCE:
607 case MCAST_UNBLOCK_SOURCE:
609 struct group_source_req greqs;
612 if (optlen != sizeof(struct group_source_req))
614 if (copy_from_user(&greqs, optval, sizeof(greqs))) {
618 if (greqs.gsr_group.ss_family != AF_INET6 ||
619 greqs.gsr_source.ss_family != AF_INET6) {
620 retv = -EADDRNOTAVAIL;
623 if (optname == MCAST_BLOCK_SOURCE) {
624 omode = MCAST_EXCLUDE;
626 } else if (optname == MCAST_UNBLOCK_SOURCE) {
627 omode = MCAST_EXCLUDE;
629 } else if (optname == MCAST_JOIN_SOURCE_GROUP) {
630 struct sockaddr_in6 *psin6;
632 psin6 = (struct sockaddr_in6 *)&greqs.gsr_group;
633 retv = ipv6_sock_mc_join(sk, greqs.gsr_interface,
635 /* prior join w/ different source is ok */
636 if (retv && retv != -EADDRINUSE)
638 omode = MCAST_INCLUDE;
640 } else /* MCAST_LEAVE_SOURCE_GROUP */ {
641 omode = MCAST_INCLUDE;
644 retv = ip6_mc_source(add, omode, sk, &greqs);
649 extern int sysctl_mld_max_msf;
650 struct group_filter *gsf;
652 if (optlen < GROUP_FILTER_SIZE(0))
654 if (optlen > sysctl_optmem_max) {
658 gsf = kmalloc(optlen,GFP_KERNEL);
664 if (copy_from_user(gsf, optval, optlen)) {
668 /* numsrc >= (4G-140)/128 overflow in 32 bits */
669 if (gsf->gf_numsrc >= 0x1ffffffU ||
670 gsf->gf_numsrc > sysctl_mld_max_msf) {
675 if (GROUP_FILTER_SIZE(gsf->gf_numsrc) > optlen) {
680 retv = ip6_mc_msfilter(sk, gsf);
685 case IPV6_ROUTER_ALERT:
686 retv = ip6_ra_control(sk, val, NULL);
688 case IPV6_MTU_DISCOVER:
695 if (val && val < IPV6_MIN_MTU)
701 np->recverr = valbool;
703 skb_queue_purge(&sk->sk_error_queue);
706 case IPV6_FLOWINFO_SEND:
707 np->sndflow = valbool;
710 case IPV6_FLOWLABEL_MGR:
711 retv = ipv6_flowlabel_opt(sk, optval, optlen);
713 case IPV6_IPSEC_POLICY:
714 case IPV6_XFRM_POLICY:
716 if (!capable(CAP_NET_ADMIN))
718 retv = xfrm_user_policy(sk, optname, optval, optlen);
731 int ipv6_setsockopt(struct sock *sk, int level, int optname,
732 char __user *optval, int optlen)
736 if (level == SOL_IP && sk->sk_type != SOCK_RAW)
737 return udp_prot.setsockopt(sk, level, optname, optval, optlen);
739 if (level != SOL_IPV6)
742 err = do_ipv6_setsockopt(sk, level, optname, optval, optlen);
743 #ifdef CONFIG_NETFILTER
744 /* we need to exclude all possible ENOPROTOOPTs except default case */
745 if (err == -ENOPROTOOPT && optname != IPV6_IPSEC_POLICY &&
746 optname != IPV6_XFRM_POLICY) {
748 err = nf_setsockopt(sk, PF_INET6, optname, optval,
758 int compat_ipv6_setsockopt(struct sock *sk, int level, int optname,
759 char __user *optval, int optlen)
763 if (level == SOL_IP && sk->sk_type != SOCK_RAW) {
764 if (udp_prot.compat_setsockopt != NULL)
765 return udp_prot.compat_setsockopt(sk, level, optname,
767 return udp_prot.setsockopt(sk, level, optname, optval, optlen);
770 if (level != SOL_IPV6)
773 err = do_ipv6_setsockopt(sk, level, optname, optval, optlen);
774 #ifdef CONFIG_NETFILTER
775 /* we need to exclude all possible ENOPROTOOPTs except default case */
776 if (err == -ENOPROTOOPT && optname != IPV6_IPSEC_POLICY &&
777 optname != IPV6_XFRM_POLICY) {
779 err = compat_nf_setsockopt(sk, PF_INET6, optname,
787 EXPORT_SYMBOL(compat_ipv6_setsockopt);
790 static int ipv6_getsockopt_sticky(struct sock *sk, struct ipv6_opt_hdr *hdr,
791 char __user *optval, int len)
795 len = min_t(int, len, ipv6_optlen(hdr));
796 if (copy_to_user(optval, hdr, ipv6_optlen(hdr)))
801 static int do_ipv6_getsockopt(struct sock *sk, int level, int optname,
802 char __user *optval, int __user *optlen)
804 struct ipv6_pinfo *np = inet6_sk(sk);
808 if (get_user(len, optlen))
812 if (sk->sk_protocol != IPPROTO_UDP &&
813 sk->sk_protocol != IPPROTO_TCP)
815 if (sk->sk_state != TCP_ESTABLISHED)
821 struct group_filter gsf;
824 if (len < GROUP_FILTER_SIZE(0))
826 if (copy_from_user(&gsf, optval, GROUP_FILTER_SIZE(0)))
829 err = ip6_mc_msfget(sk, &gsf,
830 (struct group_filter __user *)optval, optlen);
835 case IPV6_2292PKTOPTIONS:
840 if (sk->sk_type != SOCK_STREAM)
843 msg.msg_control = optval;
844 msg.msg_controllen = len;
848 skb = np->pktoptions;
850 atomic_inc(&skb->users);
854 int err = datagram_recv_ctl(sk, &msg, skb);
859 if (np->rxopt.bits.rxinfo) {
860 struct in6_pktinfo src_info;
861 src_info.ipi6_ifindex = np->mcast_oif;
862 ipv6_addr_copy(&src_info.ipi6_addr, &np->daddr);
863 put_cmsg(&msg, SOL_IPV6, IPV6_PKTINFO, sizeof(src_info), &src_info);
865 if (np->rxopt.bits.rxhlim) {
866 int hlim = np->mcast_hops;
867 put_cmsg(&msg, SOL_IPV6, IPV6_HOPLIMIT, sizeof(hlim), &hlim);
869 if (np->rxopt.bits.rxoinfo) {
870 struct in6_pktinfo src_info;
871 src_info.ipi6_ifindex = np->mcast_oif;
872 ipv6_addr_copy(&src_info.ipi6_addr, &np->daddr);
873 put_cmsg(&msg, SOL_IPV6, IPV6_2292PKTINFO, sizeof(src_info), &src_info);
875 if (np->rxopt.bits.rxohlim) {
876 int hlim = np->mcast_hops;
877 put_cmsg(&msg, SOL_IPV6, IPV6_2292HOPLIMIT, sizeof(hlim), &hlim);
880 len -= msg.msg_controllen;
881 return put_user(len, optlen);
885 struct dst_entry *dst;
888 dst = sk_dst_get(sk);
903 case IPV6_RECVPKTINFO:
904 val = np->rxopt.bits.rxinfo;
907 case IPV6_2292PKTINFO:
908 val = np->rxopt.bits.rxoinfo;
911 case IPV6_RECVHOPLIMIT:
912 val = np->rxopt.bits.rxhlim;
915 case IPV6_2292HOPLIMIT:
916 val = np->rxopt.bits.rxohlim;
920 val = np->rxopt.bits.srcrt;
924 val = np->rxopt.bits.osrcrt;
928 case IPV6_RTHDRDSTOPTS:
934 len = ipv6_getsockopt_sticky(sk, np->opt->hopopt,
937 return put_user(len, optlen);
940 case IPV6_RECVHOPOPTS:
941 val = np->rxopt.bits.hopopts;
944 case IPV6_2292HOPOPTS:
945 val = np->rxopt.bits.ohopopts;
948 case IPV6_RECVDSTOPTS:
949 val = np->rxopt.bits.dstopts;
952 case IPV6_2292DSTOPTS:
953 val = np->rxopt.bits.odstopts;
962 case IPV6_RECVTCLASS:
963 val = np->rxopt.bits.rxtclass;
967 val = np->rxopt.bits.rxflow;
970 case IPV6_UNICAST_HOPS:
974 case IPV6_MULTICAST_HOPS:
975 val = np->mcast_hops;
978 case IPV6_MULTICAST_LOOP:
982 case IPV6_MULTICAST_IF:
986 case IPV6_MTU_DISCOVER:
994 case IPV6_FLOWINFO_SEND:
1001 len = min_t(unsigned int, sizeof(int), len);
1002 if(put_user(len, optlen))
1004 if(copy_to_user(optval,&val,len))
1009 int ipv6_getsockopt(struct sock *sk, int level, int optname,
1010 char __user *optval, int __user *optlen)
1014 if (level == SOL_IP && sk->sk_type != SOCK_RAW)
1015 return udp_prot.getsockopt(sk, level, optname, optval, optlen);
1017 if(level != SOL_IPV6)
1018 return -ENOPROTOOPT;
1020 err = do_ipv6_getsockopt(sk, level, optname, optval, optlen);
1021 #ifdef CONFIG_NETFILTER
1022 /* we need to exclude all possible EINVALs except default case */
1023 if (err == -EINVAL && optname != IPV6_ADDRFORM &&
1024 optname != MCAST_MSFILTER) {
1027 if (get_user(len, optlen))
1031 err = nf_getsockopt(sk, PF_INET6, optname, optval,
1035 err = put_user(len, optlen);
1041 #ifdef CONFIG_COMPAT
1042 int compat_ipv6_getsockopt(struct sock *sk, int level, int optname,
1043 char __user *optval, int __user *optlen)
1047 if (level == SOL_IP && sk->sk_type != SOCK_RAW) {
1048 if (udp_prot.compat_getsockopt != NULL)
1049 return udp_prot.compat_getsockopt(sk, level, optname,
1051 return udp_prot.getsockopt(sk, level, optname, optval, optlen);
1054 if (level != SOL_IPV6)
1055 return -ENOPROTOOPT;
1057 err = do_ipv6_getsockopt(sk, level, optname, optval, optlen);
1058 #ifdef CONFIG_NETFILTER
1059 /* we need to exclude all possible EINVALs except default case */
1060 if (err == -EINVAL && optname != IPV6_ADDRFORM &&
1061 optname != MCAST_MSFILTER) {
1064 if (get_user(len, optlen))
1068 err = compat_nf_getsockopt(sk, PF_INET6,
1069 optname, optval, &len);
1072 err = put_user(len, optlen);
1078 EXPORT_SYMBOL(compat_ipv6_getsockopt);
1081 void __init ipv6_packet_init(void)
1083 dev_add_pack(&ipv6_packet_type);
1086 void ipv6_packet_cleanup(void)
1088 dev_remove_pack(&ipv6_packet_type);