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 (!(features & NETIF_F_HW_CSUM))
127 features &= ~NETIF_F_SG;
129 if (unlikely(skb_shinfo(skb)->gso_type &
137 if (unlikely(!pskb_may_pull(skb, sizeof(*ipv6h))))
140 ipv6h = skb->nh.ipv6h;
141 __skb_pull(skb, sizeof(*ipv6h));
142 segs = ERR_PTR(-EPROTONOSUPPORT);
145 ops = ipv6_gso_pull_exthdrs(skb, ipv6h->nexthdr);
146 if (likely(ops && ops->gso_segment)) {
147 skb->h.raw = skb->data;
148 segs = ops->gso_segment(skb, features);
152 if (unlikely(IS_ERR(segs)))
155 for (skb = segs; skb; skb = skb->next) {
156 ipv6h = skb->nh.ipv6h;
157 ipv6h->payload_len = htons(skb->len - skb->mac_len -
165 static struct packet_type ipv6_packet_type = {
166 .type = __constant_htons(ETH_P_IPV6),
168 .gso_send_check = ipv6_gso_send_check,
169 .gso_segment = ipv6_gso_segment,
172 struct ip6_ra_chain *ip6_ra_chain;
173 DEFINE_RWLOCK(ip6_ra_lock);
175 int ip6_ra_control(struct sock *sk, int sel, void (*destructor)(struct sock *))
177 struct ip6_ra_chain *ra, *new_ra, **rap;
179 /* RA packet may be delivered ONLY to IPPROTO_RAW socket */
180 if (sk->sk_type != SOCK_RAW || inet_sk(sk)->num != IPPROTO_RAW)
183 new_ra = (sel>=0) ? kmalloc(sizeof(*new_ra), GFP_KERNEL) : NULL;
185 write_lock_bh(&ip6_ra_lock);
186 for (rap = &ip6_ra_chain; (ra=*rap) != NULL; rap = &ra->next) {
189 write_unlock_bh(&ip6_ra_lock);
195 write_unlock_bh(&ip6_ra_lock);
204 if (new_ra == NULL) {
205 write_unlock_bh(&ip6_ra_lock);
210 new_ra->destructor = destructor;
214 write_unlock_bh(&ip6_ra_lock);
218 static int do_ipv6_setsockopt(struct sock *sk, int level, int optname,
219 char __user *optval, int optlen)
221 struct ipv6_pinfo *np = inet6_sk(sk);
223 int retv = -ENOPROTOOPT;
227 else if (get_user(val, (int __user *) optval))
237 if (val == PF_INET) {
238 struct ipv6_txoptions *opt;
239 struct sk_buff *pktopt;
241 if (sk->sk_protocol != IPPROTO_UDP &&
242 sk->sk_protocol != IPPROTO_TCP)
245 if (sk->sk_state != TCP_ESTABLISHED) {
250 if (ipv6_only_sock(sk) ||
251 !(ipv6_addr_type(&np->daddr) & IPV6_ADDR_MAPPED)) {
252 retv = -EADDRNOTAVAIL;
256 fl6_free_socklist(sk);
257 ipv6_sock_mc_close(sk);
260 * Sock is moving from IPv6 to IPv4 (sk_prot), so
261 * remove it from the refcnt debug socks count in the
264 sk_refcnt_debug_dec(sk);
266 if (sk->sk_protocol == IPPROTO_TCP) {
267 struct inet_connection_sock *icsk = inet_csk(sk);
270 sock_prot_dec_use(sk->sk_prot);
271 sock_prot_inc_use(&tcp_prot);
273 sk->sk_prot = &tcp_prot;
274 icsk->icsk_af_ops = &ipv4_specific;
275 sk->sk_socket->ops = &inet_stream_ops;
276 sk->sk_family = PF_INET;
277 tcp_sync_mss(sk, icsk->icsk_pmtu_cookie);
280 sock_prot_dec_use(sk->sk_prot);
281 sock_prot_inc_use(&udp_prot);
283 sk->sk_prot = &udp_prot;
284 sk->sk_socket->ops = &inet_dgram_ops;
285 sk->sk_family = PF_INET;
287 opt = xchg(&np->opt, NULL);
289 sock_kfree_s(sk, opt, opt->tot_len);
290 pktopt = xchg(&np->pktoptions, NULL);
294 sk->sk_destruct = inet_sock_destruct;
296 * ... and add it to the refcnt debug socks count
297 * in the new family. -acme
299 sk_refcnt_debug_inc(sk);
300 module_put(THIS_MODULE);
307 if (inet_sk(sk)->num)
309 np->ipv6only = valbool;
313 case IPV6_RECVPKTINFO:
314 np->rxopt.bits.rxinfo = valbool;
318 case IPV6_2292PKTINFO:
319 np->rxopt.bits.rxoinfo = valbool;
323 case IPV6_RECVHOPLIMIT:
324 np->rxopt.bits.rxhlim = valbool;
328 case IPV6_2292HOPLIMIT:
329 np->rxopt.bits.rxohlim = valbool;
334 if (val < 0 || val > 2)
336 np->rxopt.bits.srcrt = val;
341 if (val < 0 || val > 2)
343 np->rxopt.bits.osrcrt = val;
347 case IPV6_RECVHOPOPTS:
348 np->rxopt.bits.hopopts = valbool;
352 case IPV6_2292HOPOPTS:
353 np->rxopt.bits.ohopopts = valbool;
357 case IPV6_RECVDSTOPTS:
358 np->rxopt.bits.dstopts = valbool;
362 case IPV6_2292DSTOPTS:
363 np->rxopt.bits.odstopts = valbool;
368 if (val < -1 || val > 0xff)
374 case IPV6_RECVTCLASS:
375 np->rxopt.bits.rxtclass = valbool;
380 np->rxopt.bits.rxflow = valbool;
385 case IPV6_RTHDRDSTOPTS:
389 struct ipv6_txoptions *opt;
393 /* hop-by-hop / destination options are privileged option */
395 if (optname != IPV6_RTHDR && !capable(CAP_NET_RAW))
399 if (optlen & 0x7 || optlen > 8 * 255)
402 opt = ipv6_renew_options(sk, np->opt, optname,
403 (struct ipv6_opt_hdr __user *)optval,
410 /* routing header option needs extra check */
411 if (optname == IPV6_RTHDR && opt->srcrt) {
412 struct ipv6_rt_hdr *rthdr = opt->srcrt;
415 if ((rthdr->hdrlen & 1) ||
416 (rthdr->hdrlen >> 1) != rthdr->segments_left)
421 if (inet_sk(sk)->is_icsk) {
423 struct inet_connection_sock *icsk = inet_csk(sk);
424 if (!((1 << sk->sk_state) &
425 (TCPF_LISTEN | TCPF_CLOSE))
426 && inet_sk(sk)->daddr != LOOPBACK4_IPV6) {
427 icsk->icsk_ext_hdr_len =
428 opt->opt_flen + opt->opt_nflen;
429 icsk->icsk_sync_mss(sk, icsk->icsk_pmtu_cookie);
432 opt = xchg(&np->opt, opt);
435 write_lock(&sk->sk_dst_lock);
436 opt = xchg(&np->opt, opt);
437 write_unlock(&sk->sk_dst_lock);
442 sock_kfree_s(sk, opt, opt->tot_len);
446 case IPV6_2292PKTOPTIONS:
448 struct ipv6_txoptions *opt = NULL;
453 fl.fl6_flowlabel = 0;
454 fl.oif = sk->sk_bound_dev_if;
459 /* 1K is probably excessive
460 * 1K is surely not enough, 2K per standard header is 16K.
463 if (optlen > 64*1024)
466 opt = sock_kmalloc(sk, sizeof(*opt) + optlen, GFP_KERNEL);
471 memset(opt, 0, sizeof(*opt));
472 opt->tot_len = sizeof(*opt) + optlen;
474 if (copy_from_user(opt+1, optval, optlen))
477 msg.msg_controllen = optlen;
478 msg.msg_control = (void*)(opt+1);
480 retv = datagram_send_ctl(&msg, &fl, opt, &junk, &junk);
485 if (inet_sk(sk)->is_icsk) {
487 struct inet_connection_sock *icsk = inet_csk(sk);
488 if (!((1 << sk->sk_state) &
489 (TCPF_LISTEN | TCPF_CLOSE))
490 && inet_sk(sk)->daddr != LOOPBACK4_IPV6) {
491 icsk->icsk_ext_hdr_len =
492 opt->opt_flen + opt->opt_nflen;
493 icsk->icsk_sync_mss(sk, icsk->icsk_pmtu_cookie);
496 opt = xchg(&np->opt, opt);
499 write_lock(&sk->sk_dst_lock);
500 opt = xchg(&np->opt, opt);
501 write_unlock(&sk->sk_dst_lock);
507 sock_kfree_s(sk, opt, opt->tot_len);
510 case IPV6_UNICAST_HOPS:
511 if (val > 255 || val < -1)
517 case IPV6_MULTICAST_HOPS:
518 if (sk->sk_type == SOCK_STREAM)
520 if (val > 255 || val < -1)
522 np->mcast_hops = val;
526 case IPV6_MULTICAST_LOOP:
527 np->mc_loop = valbool;
531 case IPV6_MULTICAST_IF:
532 if (sk->sk_type == SOCK_STREAM)
534 if (sk->sk_bound_dev_if && sk->sk_bound_dev_if != val)
537 if (__dev_get_by_index(val) == NULL) {
544 case IPV6_ADD_MEMBERSHIP:
545 case IPV6_DROP_MEMBERSHIP:
547 struct ipv6_mreq mreq;
550 if (copy_from_user(&mreq, optval, sizeof(struct ipv6_mreq)))
553 if (optname == IPV6_ADD_MEMBERSHIP)
554 retv = ipv6_sock_mc_join(sk, mreq.ipv6mr_ifindex, &mreq.ipv6mr_multiaddr);
556 retv = ipv6_sock_mc_drop(sk, mreq.ipv6mr_ifindex, &mreq.ipv6mr_multiaddr);
559 case IPV6_JOIN_ANYCAST:
560 case IPV6_LEAVE_ANYCAST:
562 struct ipv6_mreq mreq;
564 if (optlen != sizeof(struct ipv6_mreq))
568 if (copy_from_user(&mreq, optval, sizeof(struct ipv6_mreq)))
571 if (optname == IPV6_JOIN_ANYCAST)
572 retv = ipv6_sock_ac_join(sk, mreq.ipv6mr_ifindex, &mreq.ipv6mr_acaddr);
574 retv = ipv6_sock_ac_drop(sk, mreq.ipv6mr_ifindex, &mreq.ipv6mr_acaddr);
577 case MCAST_JOIN_GROUP:
578 case MCAST_LEAVE_GROUP:
580 struct group_req greq;
581 struct sockaddr_in6 *psin6;
584 if (copy_from_user(&greq, optval, sizeof(struct group_req)))
586 if (greq.gr_group.ss_family != AF_INET6) {
587 retv = -EADDRNOTAVAIL;
590 psin6 = (struct sockaddr_in6 *)&greq.gr_group;
591 if (optname == MCAST_JOIN_GROUP)
592 retv = ipv6_sock_mc_join(sk, greq.gr_interface,
595 retv = ipv6_sock_mc_drop(sk, greq.gr_interface,
599 case MCAST_JOIN_SOURCE_GROUP:
600 case MCAST_LEAVE_SOURCE_GROUP:
601 case MCAST_BLOCK_SOURCE:
602 case MCAST_UNBLOCK_SOURCE:
604 struct group_source_req greqs;
607 if (optlen != sizeof(struct group_source_req))
609 if (copy_from_user(&greqs, optval, sizeof(greqs))) {
613 if (greqs.gsr_group.ss_family != AF_INET6 ||
614 greqs.gsr_source.ss_family != AF_INET6) {
615 retv = -EADDRNOTAVAIL;
618 if (optname == MCAST_BLOCK_SOURCE) {
619 omode = MCAST_EXCLUDE;
621 } else if (optname == MCAST_UNBLOCK_SOURCE) {
622 omode = MCAST_EXCLUDE;
624 } else if (optname == MCAST_JOIN_SOURCE_GROUP) {
625 struct sockaddr_in6 *psin6;
627 psin6 = (struct sockaddr_in6 *)&greqs.gsr_group;
628 retv = ipv6_sock_mc_join(sk, greqs.gsr_interface,
630 /* prior join w/ different source is ok */
631 if (retv && retv != -EADDRINUSE)
633 omode = MCAST_INCLUDE;
635 } else /* MCAST_LEAVE_SOURCE_GROUP */ {
636 omode = MCAST_INCLUDE;
639 retv = ip6_mc_source(add, omode, sk, &greqs);
644 extern int sysctl_mld_max_msf;
645 struct group_filter *gsf;
647 if (optlen < GROUP_FILTER_SIZE(0))
649 if (optlen > sysctl_optmem_max) {
653 gsf = kmalloc(optlen,GFP_KERNEL);
659 if (copy_from_user(gsf, optval, optlen)) {
663 /* numsrc >= (4G-140)/128 overflow in 32 bits */
664 if (gsf->gf_numsrc >= 0x1ffffffU ||
665 gsf->gf_numsrc > sysctl_mld_max_msf) {
670 if (GROUP_FILTER_SIZE(gsf->gf_numsrc) > optlen) {
675 retv = ip6_mc_msfilter(sk, gsf);
680 case IPV6_ROUTER_ALERT:
681 retv = ip6_ra_control(sk, val, NULL);
683 case IPV6_MTU_DISCOVER:
690 if (val && val < IPV6_MIN_MTU)
696 np->recverr = valbool;
698 skb_queue_purge(&sk->sk_error_queue);
701 case IPV6_FLOWINFO_SEND:
702 np->sndflow = valbool;
705 case IPV6_FLOWLABEL_MGR:
706 retv = ipv6_flowlabel_opt(sk, optval, optlen);
708 case IPV6_IPSEC_POLICY:
709 case IPV6_XFRM_POLICY:
711 if (!capable(CAP_NET_ADMIN))
713 retv = xfrm_user_policy(sk, optname, optval, optlen);
726 int ipv6_setsockopt(struct sock *sk, int level, int optname,
727 char __user *optval, int optlen)
731 if (level == SOL_IP && sk->sk_type != SOCK_RAW)
732 return udp_prot.setsockopt(sk, level, optname, optval, optlen);
734 if (level != SOL_IPV6)
737 err = do_ipv6_setsockopt(sk, level, optname, optval, optlen);
738 #ifdef CONFIG_NETFILTER
739 /* we need to exclude all possible ENOPROTOOPTs except default case */
740 if (err == -ENOPROTOOPT && optname != IPV6_IPSEC_POLICY &&
741 optname != IPV6_XFRM_POLICY) {
743 err = nf_setsockopt(sk, PF_INET6, optname, optval,
753 int compat_ipv6_setsockopt(struct sock *sk, int level, int optname,
754 char __user *optval, int optlen)
758 if (level == SOL_IP && sk->sk_type != SOCK_RAW) {
759 if (udp_prot.compat_setsockopt != NULL)
760 return udp_prot.compat_setsockopt(sk, level, optname,
762 return udp_prot.setsockopt(sk, level, optname, optval, optlen);
765 if (level != SOL_IPV6)
768 err = do_ipv6_setsockopt(sk, level, optname, optval, optlen);
769 #ifdef CONFIG_NETFILTER
770 /* we need to exclude all possible ENOPROTOOPTs except default case */
771 if (err == -ENOPROTOOPT && optname != IPV6_IPSEC_POLICY &&
772 optname != IPV6_XFRM_POLICY) {
774 err = compat_nf_setsockopt(sk, PF_INET6, optname,
782 EXPORT_SYMBOL(compat_ipv6_setsockopt);
785 static int ipv6_getsockopt_sticky(struct sock *sk, struct ipv6_opt_hdr *hdr,
786 char __user *optval, int len)
790 len = min_t(int, len, ipv6_optlen(hdr));
791 if (copy_to_user(optval, hdr, ipv6_optlen(hdr)))
796 static int do_ipv6_getsockopt(struct sock *sk, int level, int optname,
797 char __user *optval, int __user *optlen)
799 struct ipv6_pinfo *np = inet6_sk(sk);
803 if (get_user(len, optlen))
807 if (sk->sk_protocol != IPPROTO_UDP &&
808 sk->sk_protocol != IPPROTO_TCP)
810 if (sk->sk_state != TCP_ESTABLISHED)
816 struct group_filter gsf;
819 if (len < GROUP_FILTER_SIZE(0))
821 if (copy_from_user(&gsf, optval, GROUP_FILTER_SIZE(0)))
824 err = ip6_mc_msfget(sk, &gsf,
825 (struct group_filter __user *)optval, optlen);
830 case IPV6_2292PKTOPTIONS:
835 if (sk->sk_type != SOCK_STREAM)
838 msg.msg_control = optval;
839 msg.msg_controllen = len;
843 skb = np->pktoptions;
845 atomic_inc(&skb->users);
849 int err = datagram_recv_ctl(sk, &msg, skb);
854 if (np->rxopt.bits.rxinfo) {
855 struct in6_pktinfo src_info;
856 src_info.ipi6_ifindex = np->mcast_oif;
857 ipv6_addr_copy(&src_info.ipi6_addr, &np->daddr);
858 put_cmsg(&msg, SOL_IPV6, IPV6_PKTINFO, sizeof(src_info), &src_info);
860 if (np->rxopt.bits.rxhlim) {
861 int hlim = np->mcast_hops;
862 put_cmsg(&msg, SOL_IPV6, IPV6_HOPLIMIT, sizeof(hlim), &hlim);
864 if (np->rxopt.bits.rxoinfo) {
865 struct in6_pktinfo src_info;
866 src_info.ipi6_ifindex = np->mcast_oif;
867 ipv6_addr_copy(&src_info.ipi6_addr, &np->daddr);
868 put_cmsg(&msg, SOL_IPV6, IPV6_2292PKTINFO, sizeof(src_info), &src_info);
870 if (np->rxopt.bits.rxohlim) {
871 int hlim = np->mcast_hops;
872 put_cmsg(&msg, SOL_IPV6, IPV6_2292HOPLIMIT, sizeof(hlim), &hlim);
875 len -= msg.msg_controllen;
876 return put_user(len, optlen);
880 struct dst_entry *dst;
883 dst = sk_dst_get(sk);
898 case IPV6_RECVPKTINFO:
899 val = np->rxopt.bits.rxinfo;
902 case IPV6_2292PKTINFO:
903 val = np->rxopt.bits.rxoinfo;
906 case IPV6_RECVHOPLIMIT:
907 val = np->rxopt.bits.rxhlim;
910 case IPV6_2292HOPLIMIT:
911 val = np->rxopt.bits.rxohlim;
915 val = np->rxopt.bits.srcrt;
919 val = np->rxopt.bits.osrcrt;
923 case IPV6_RTHDRDSTOPTS:
929 len = ipv6_getsockopt_sticky(sk, np->opt->hopopt,
932 return put_user(len, optlen);
935 case IPV6_RECVHOPOPTS:
936 val = np->rxopt.bits.hopopts;
939 case IPV6_2292HOPOPTS:
940 val = np->rxopt.bits.ohopopts;
943 case IPV6_RECVDSTOPTS:
944 val = np->rxopt.bits.dstopts;
947 case IPV6_2292DSTOPTS:
948 val = np->rxopt.bits.odstopts;
957 case IPV6_RECVTCLASS:
958 val = np->rxopt.bits.rxtclass;
962 val = np->rxopt.bits.rxflow;
965 case IPV6_UNICAST_HOPS:
969 case IPV6_MULTICAST_HOPS:
970 val = np->mcast_hops;
973 case IPV6_MULTICAST_LOOP:
977 case IPV6_MULTICAST_IF:
981 case IPV6_MTU_DISCOVER:
989 case IPV6_FLOWINFO_SEND:
996 len = min_t(unsigned int, sizeof(int), len);
997 if(put_user(len, optlen))
999 if(copy_to_user(optval,&val,len))
1004 int ipv6_getsockopt(struct sock *sk, int level, int optname,
1005 char __user *optval, int __user *optlen)
1009 if (level == SOL_IP && sk->sk_type != SOCK_RAW)
1010 return udp_prot.getsockopt(sk, level, optname, optval, optlen);
1012 if(level != SOL_IPV6)
1013 return -ENOPROTOOPT;
1015 err = do_ipv6_getsockopt(sk, level, optname, optval, optlen);
1016 #ifdef CONFIG_NETFILTER
1017 /* we need to exclude all possible EINVALs except default case */
1018 if (err == -EINVAL && optname != IPV6_ADDRFORM &&
1019 optname != MCAST_MSFILTER) {
1022 if (get_user(len, optlen))
1026 err = nf_getsockopt(sk, PF_INET6, optname, optval,
1030 err = put_user(len, optlen);
1036 #ifdef CONFIG_COMPAT
1037 int compat_ipv6_getsockopt(struct sock *sk, int level, int optname,
1038 char __user *optval, int __user *optlen)
1042 if (level == SOL_IP && sk->sk_type != SOCK_RAW) {
1043 if (udp_prot.compat_getsockopt != NULL)
1044 return udp_prot.compat_getsockopt(sk, level, optname,
1046 return udp_prot.getsockopt(sk, level, optname, optval, optlen);
1049 if (level != SOL_IPV6)
1050 return -ENOPROTOOPT;
1052 err = do_ipv6_getsockopt(sk, level, optname, optval, optlen);
1053 #ifdef CONFIG_NETFILTER
1054 /* we need to exclude all possible EINVALs except default case */
1055 if (err == -EINVAL && optname != IPV6_ADDRFORM &&
1056 optname != MCAST_MSFILTER) {
1059 if (get_user(len, optlen))
1063 err = compat_nf_getsockopt(sk, PF_INET6,
1064 optname, optval, &len);
1067 err = put_user(len, optlen);
1073 EXPORT_SYMBOL(compat_ipv6_getsockopt);
1076 void __init ipv6_packet_init(void)
1078 dev_add_pack(&ipv6_packet_type);
1081 void ipv6_packet_cleanup(void)
1083 dev_remove_pack(&ipv6_packet_type);