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/net.h>
35 #include <linux/in6.h>
36 #include <linux/netdevice.h>
37 #include <linux/if_arp.h>
38 #include <linux/init.h>
39 #include <linux/sysctl.h>
40 #include <linux/netfilter.h>
45 #include <net/ndisc.h>
46 #include <net/protocol.h>
47 #include <net/transp_v6.h>
48 #include <net/ip6_route.h>
49 #include <net/addrconf.h>
50 #include <net/inet_common.h>
53 #include <net/udplite.h>
56 #include <asm/uaccess.h>
58 DEFINE_SNMP_STAT(struct ipstats_mib, ipv6_statistics) __read_mostly;
60 struct ip6_ra_chain *ip6_ra_chain;
61 DEFINE_RWLOCK(ip6_ra_lock);
63 int ip6_ra_control(struct sock *sk, int sel, void (*destructor)(struct sock *))
65 struct ip6_ra_chain *ra, *new_ra, **rap;
67 /* RA packet may be delivered ONLY to IPPROTO_RAW socket */
68 if (sk->sk_type != SOCK_RAW || inet_sk(sk)->num != IPPROTO_RAW)
71 new_ra = (sel>=0) ? kmalloc(sizeof(*new_ra), GFP_KERNEL) : NULL;
73 write_lock_bh(&ip6_ra_lock);
74 for (rap = &ip6_ra_chain; (ra=*rap) != NULL; rap = &ra->next) {
77 write_unlock_bh(&ip6_ra_lock);
83 write_unlock_bh(&ip6_ra_lock);
93 write_unlock_bh(&ip6_ra_lock);
98 new_ra->destructor = destructor;
102 write_unlock_bh(&ip6_ra_lock);
106 static int do_ipv6_setsockopt(struct sock *sk, int level, int optname,
107 char __user *optval, int optlen)
109 struct ipv6_pinfo *np = inet6_sk(sk);
110 struct net *net = sock_net(sk);
112 int retv = -ENOPROTOOPT;
116 else if (get_user(val, (int __user *) optval))
126 if (val == PF_INET) {
127 struct ipv6_txoptions *opt;
128 struct sk_buff *pktopt;
130 if (sk->sk_protocol != IPPROTO_UDP &&
131 sk->sk_protocol != IPPROTO_UDPLITE &&
132 sk->sk_protocol != IPPROTO_TCP)
135 if (sk->sk_state != TCP_ESTABLISHED) {
140 if (ipv6_only_sock(sk) ||
141 !ipv6_addr_v4mapped(&np->daddr)) {
142 retv = -EADDRNOTAVAIL;
146 fl6_free_socklist(sk);
147 ipv6_sock_mc_close(sk);
150 * Sock is moving from IPv6 to IPv4 (sk_prot), so
151 * remove it from the refcnt debug socks count in the
154 sk_refcnt_debug_dec(sk);
156 if (sk->sk_protocol == IPPROTO_TCP) {
157 struct inet_connection_sock *icsk = inet_csk(sk);
160 sock_prot_inuse_add(sk->sk_prot, -1);
161 sock_prot_inuse_add(&tcp_prot, 1);
163 sk->sk_prot = &tcp_prot;
164 icsk->icsk_af_ops = &ipv4_specific;
165 sk->sk_socket->ops = &inet_stream_ops;
166 sk->sk_family = PF_INET;
167 tcp_sync_mss(sk, icsk->icsk_pmtu_cookie);
169 struct proto *prot = &udp_prot;
171 if (sk->sk_protocol == IPPROTO_UDPLITE)
172 prot = &udplite_prot;
174 sock_prot_inuse_add(sk->sk_prot, -1);
175 sock_prot_inuse_add(prot, 1);
178 sk->sk_socket->ops = &inet_dgram_ops;
179 sk->sk_family = PF_INET;
181 opt = xchg(&np->opt, NULL);
183 sock_kfree_s(sk, opt, opt->tot_len);
184 pktopt = xchg(&np->pktoptions, NULL);
188 sk->sk_destruct = inet_sock_destruct;
190 * ... and add it to the refcnt debug socks count
191 * in the new family. -acme
193 sk_refcnt_debug_inc(sk);
194 module_put(THIS_MODULE);
201 if (inet_sk(sk)->num)
203 np->ipv6only = valbool;
207 case IPV6_RECVPKTINFO:
208 np->rxopt.bits.rxinfo = valbool;
212 case IPV6_2292PKTINFO:
213 np->rxopt.bits.rxoinfo = valbool;
217 case IPV6_RECVHOPLIMIT:
218 np->rxopt.bits.rxhlim = valbool;
222 case IPV6_2292HOPLIMIT:
223 np->rxopt.bits.rxohlim = valbool;
228 np->rxopt.bits.srcrt = valbool;
233 np->rxopt.bits.osrcrt = valbool;
237 case IPV6_RECVHOPOPTS:
238 np->rxopt.bits.hopopts = valbool;
242 case IPV6_2292HOPOPTS:
243 np->rxopt.bits.ohopopts = valbool;
247 case IPV6_RECVDSTOPTS:
248 np->rxopt.bits.dstopts = valbool;
252 case IPV6_2292DSTOPTS:
253 np->rxopt.bits.odstopts = valbool;
258 if (val < -1 || val > 0xff)
264 case IPV6_RECVTCLASS:
265 np->rxopt.bits.rxtclass = valbool;
270 np->rxopt.bits.rxflow = valbool;
275 case IPV6_RTHDRDSTOPTS:
279 struct ipv6_txoptions *opt;
283 /* hop-by-hop / destination options are privileged option */
285 if (optname != IPV6_RTHDR && !capable(CAP_NET_RAW))
289 if (optlen & 0x7 || optlen > 8 * 255)
292 opt = ipv6_renew_options(sk, np->opt, optname,
293 (struct ipv6_opt_hdr __user *)optval,
300 /* routing header option needs extra check */
301 if (optname == IPV6_RTHDR && opt && opt->srcrt) {
302 struct ipv6_rt_hdr *rthdr = opt->srcrt;
303 switch (rthdr->type) {
304 #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
305 case IPV6_SRCRT_TYPE_2:
312 if ((rthdr->hdrlen & 1) ||
313 (rthdr->hdrlen >> 1) != rthdr->segments_left)
318 if (inet_sk(sk)->is_icsk) {
320 struct inet_connection_sock *icsk = inet_csk(sk);
321 if (!((1 << sk->sk_state) &
322 (TCPF_LISTEN | TCPF_CLOSE))
323 && inet_sk(sk)->daddr != LOOPBACK4_IPV6) {
324 icsk->icsk_ext_hdr_len =
325 opt->opt_flen + opt->opt_nflen;
326 icsk->icsk_sync_mss(sk, icsk->icsk_pmtu_cookie);
329 opt = xchg(&np->opt, opt);
332 write_lock(&sk->sk_dst_lock);
333 opt = xchg(&np->opt, opt);
334 write_unlock(&sk->sk_dst_lock);
339 sock_kfree_s(sk, opt, opt->tot_len);
343 case IPV6_2292PKTOPTIONS:
345 struct ipv6_txoptions *opt = NULL;
350 fl.fl6_flowlabel = 0;
351 fl.oif = sk->sk_bound_dev_if;
356 /* 1K is probably excessive
357 * 1K is surely not enough, 2K per standard header is 16K.
360 if (optlen > 64*1024)
363 opt = sock_kmalloc(sk, sizeof(*opt) + optlen, GFP_KERNEL);
368 memset(opt, 0, sizeof(*opt));
369 opt->tot_len = sizeof(*opt) + optlen;
371 if (copy_from_user(opt+1, optval, optlen))
374 msg.msg_controllen = optlen;
375 msg.msg_control = (void*)(opt+1);
377 retv = datagram_send_ctl(&msg, &fl, opt, &junk, &junk);
382 if (inet_sk(sk)->is_icsk) {
384 struct inet_connection_sock *icsk = inet_csk(sk);
385 if (!((1 << sk->sk_state) &
386 (TCPF_LISTEN | TCPF_CLOSE))
387 && inet_sk(sk)->daddr != LOOPBACK4_IPV6) {
388 icsk->icsk_ext_hdr_len =
389 opt->opt_flen + opt->opt_nflen;
390 icsk->icsk_sync_mss(sk, icsk->icsk_pmtu_cookie);
393 opt = xchg(&np->opt, opt);
396 write_lock(&sk->sk_dst_lock);
397 opt = xchg(&np->opt, opt);
398 write_unlock(&sk->sk_dst_lock);
404 sock_kfree_s(sk, opt, opt->tot_len);
407 case IPV6_UNICAST_HOPS:
408 if (val > 255 || val < -1)
414 case IPV6_MULTICAST_HOPS:
415 if (sk->sk_type == SOCK_STREAM)
417 if (val > 255 || val < -1)
419 np->mcast_hops = val;
423 case IPV6_MULTICAST_LOOP:
424 np->mc_loop = valbool;
428 case IPV6_MULTICAST_IF:
429 if (sk->sk_type == SOCK_STREAM)
433 if (sk->sk_bound_dev_if && sk->sk_bound_dev_if != val)
436 if (__dev_get_by_index(net, val) == NULL) {
444 case IPV6_ADD_MEMBERSHIP:
445 case IPV6_DROP_MEMBERSHIP:
447 struct ipv6_mreq mreq;
450 if (inet_sk(sk)->is_icsk)
454 if (copy_from_user(&mreq, optval, sizeof(struct ipv6_mreq)))
457 if (optname == IPV6_ADD_MEMBERSHIP)
458 retv = ipv6_sock_mc_join(sk, mreq.ipv6mr_ifindex, &mreq.ipv6mr_multiaddr);
460 retv = ipv6_sock_mc_drop(sk, mreq.ipv6mr_ifindex, &mreq.ipv6mr_multiaddr);
463 case IPV6_JOIN_ANYCAST:
464 case IPV6_LEAVE_ANYCAST:
466 struct ipv6_mreq mreq;
468 if (optlen != sizeof(struct ipv6_mreq))
472 if (copy_from_user(&mreq, optval, sizeof(struct ipv6_mreq)))
475 if (optname == IPV6_JOIN_ANYCAST)
476 retv = ipv6_sock_ac_join(sk, mreq.ipv6mr_ifindex, &mreq.ipv6mr_acaddr);
478 retv = ipv6_sock_ac_drop(sk, mreq.ipv6mr_ifindex, &mreq.ipv6mr_acaddr);
481 case MCAST_JOIN_GROUP:
482 case MCAST_LEAVE_GROUP:
484 struct group_req greq;
485 struct sockaddr_in6 *psin6;
488 if (copy_from_user(&greq, optval, sizeof(struct group_req)))
490 if (greq.gr_group.ss_family != AF_INET6) {
491 retv = -EADDRNOTAVAIL;
494 psin6 = (struct sockaddr_in6 *)&greq.gr_group;
495 if (optname == MCAST_JOIN_GROUP)
496 retv = ipv6_sock_mc_join(sk, greq.gr_interface,
499 retv = ipv6_sock_mc_drop(sk, greq.gr_interface,
503 case MCAST_JOIN_SOURCE_GROUP:
504 case MCAST_LEAVE_SOURCE_GROUP:
505 case MCAST_BLOCK_SOURCE:
506 case MCAST_UNBLOCK_SOURCE:
508 struct group_source_req greqs;
511 if (optlen != sizeof(struct group_source_req))
513 if (copy_from_user(&greqs, optval, sizeof(greqs))) {
517 if (greqs.gsr_group.ss_family != AF_INET6 ||
518 greqs.gsr_source.ss_family != AF_INET6) {
519 retv = -EADDRNOTAVAIL;
522 if (optname == MCAST_BLOCK_SOURCE) {
523 omode = MCAST_EXCLUDE;
525 } else if (optname == MCAST_UNBLOCK_SOURCE) {
526 omode = MCAST_EXCLUDE;
528 } else if (optname == MCAST_JOIN_SOURCE_GROUP) {
529 struct sockaddr_in6 *psin6;
531 psin6 = (struct sockaddr_in6 *)&greqs.gsr_group;
532 retv = ipv6_sock_mc_join(sk, greqs.gsr_interface,
534 /* prior join w/ different source is ok */
535 if (retv && retv != -EADDRINUSE)
537 omode = MCAST_INCLUDE;
539 } else /* MCAST_LEAVE_SOURCE_GROUP */ {
540 omode = MCAST_INCLUDE;
543 retv = ip6_mc_source(add, omode, sk, &greqs);
548 extern int sysctl_mld_max_msf;
549 struct group_filter *gsf;
551 if (optlen < GROUP_FILTER_SIZE(0))
553 if (optlen > sysctl_optmem_max) {
557 gsf = kmalloc(optlen,GFP_KERNEL);
563 if (copy_from_user(gsf, optval, optlen)) {
567 /* numsrc >= (4G-140)/128 overflow in 32 bits */
568 if (gsf->gf_numsrc >= 0x1ffffffU ||
569 gsf->gf_numsrc > sysctl_mld_max_msf) {
574 if (GROUP_FILTER_SIZE(gsf->gf_numsrc) > optlen) {
579 retv = ip6_mc_msfilter(sk, gsf);
584 case IPV6_ROUTER_ALERT:
585 retv = ip6_ra_control(sk, val, NULL);
587 case IPV6_MTU_DISCOVER:
594 if (val && val < IPV6_MIN_MTU)
600 np->recverr = valbool;
602 skb_queue_purge(&sk->sk_error_queue);
605 case IPV6_FLOWINFO_SEND:
606 np->sndflow = valbool;
609 case IPV6_FLOWLABEL_MGR:
610 retv = ipv6_flowlabel_opt(sk, optval, optlen);
612 case IPV6_IPSEC_POLICY:
613 case IPV6_XFRM_POLICY:
615 if (!capable(CAP_NET_ADMIN))
617 retv = xfrm_user_policy(sk, optname, optval, optlen);
620 case IPV6_ADDR_PREFERENCES:
622 unsigned int pref = 0;
623 unsigned int prefmask = ~0;
627 /* check PUBLIC/TMP/PUBTMP_DEFAULT conflicts */
628 switch (val & (IPV6_PREFER_SRC_PUBLIC|
630 IPV6_PREFER_SRC_PUBTMP_DEFAULT)) {
631 case IPV6_PREFER_SRC_PUBLIC:
632 pref |= IPV6_PREFER_SRC_PUBLIC;
634 case IPV6_PREFER_SRC_TMP:
635 pref |= IPV6_PREFER_SRC_TMP;
637 case IPV6_PREFER_SRC_PUBTMP_DEFAULT:
640 goto pref_skip_pubtmp;
645 prefmask &= ~(IPV6_PREFER_SRC_PUBLIC|
646 IPV6_PREFER_SRC_TMP);
649 /* check HOME/COA conflicts */
650 switch (val & (IPV6_PREFER_SRC_HOME|IPV6_PREFER_SRC_COA)) {
651 case IPV6_PREFER_SRC_HOME:
653 case IPV6_PREFER_SRC_COA:
654 pref |= IPV6_PREFER_SRC_COA;
661 prefmask &= ~IPV6_PREFER_SRC_COA;
664 /* check CGA/NONCGA conflicts */
665 switch (val & (IPV6_PREFER_SRC_CGA|IPV6_PREFER_SRC_NONCGA)) {
666 case IPV6_PREFER_SRC_CGA:
667 case IPV6_PREFER_SRC_NONCGA:
674 np->srcprefs = (np->srcprefs & prefmask) | pref;
690 int ipv6_setsockopt(struct sock *sk, int level, int optname,
691 char __user *optval, int optlen)
695 if (level == SOL_IP && sk->sk_type != SOCK_RAW)
696 return udp_prot.setsockopt(sk, level, optname, optval, optlen);
698 if (level != SOL_IPV6)
701 err = do_ipv6_setsockopt(sk, level, optname, optval, optlen);
702 #ifdef CONFIG_NETFILTER
703 /* we need to exclude all possible ENOPROTOOPTs except default case */
704 if (err == -ENOPROTOOPT && optname != IPV6_IPSEC_POLICY &&
705 optname != IPV6_XFRM_POLICY) {
707 err = nf_setsockopt(sk, PF_INET6, optname, optval,
715 EXPORT_SYMBOL(ipv6_setsockopt);
718 int compat_ipv6_setsockopt(struct sock *sk, int level, int optname,
719 char __user *optval, int optlen)
723 if (level == SOL_IP && sk->sk_type != SOCK_RAW) {
724 if (udp_prot.compat_setsockopt != NULL)
725 return udp_prot.compat_setsockopt(sk, level, optname,
727 return udp_prot.setsockopt(sk, level, optname, optval, optlen);
730 if (level != SOL_IPV6)
733 err = do_ipv6_setsockopt(sk, level, optname, optval, optlen);
734 #ifdef CONFIG_NETFILTER
735 /* we need to exclude all possible ENOPROTOOPTs except default case */
736 if (err == -ENOPROTOOPT && optname != IPV6_IPSEC_POLICY &&
737 optname != IPV6_XFRM_POLICY) {
739 err = compat_nf_setsockopt(sk, PF_INET6, optname,
747 EXPORT_SYMBOL(compat_ipv6_setsockopt);
750 static int ipv6_getsockopt_sticky(struct sock *sk, struct ipv6_txoptions *opt,
751 int optname, char __user *optval, int len)
753 struct ipv6_opt_hdr *hdr;
762 case IPV6_RTHDRDSTOPTS:
766 hdr = (struct ipv6_opt_hdr *)opt->srcrt;
772 return -EINVAL; /* should not happen */
778 len = min_t(unsigned int, len, ipv6_optlen(hdr));
779 if (copy_to_user(optval, hdr, len))
781 return ipv6_optlen(hdr);
784 static int do_ipv6_getsockopt(struct sock *sk, int level, int optname,
785 char __user *optval, int __user *optlen)
787 struct ipv6_pinfo *np = inet6_sk(sk);
791 if (get_user(len, optlen))
795 if (sk->sk_protocol != IPPROTO_UDP &&
796 sk->sk_protocol != IPPROTO_UDPLITE &&
797 sk->sk_protocol != IPPROTO_TCP)
799 if (sk->sk_state != TCP_ESTABLISHED)
805 struct group_filter gsf;
808 if (len < GROUP_FILTER_SIZE(0))
810 if (copy_from_user(&gsf, optval, GROUP_FILTER_SIZE(0)))
813 err = ip6_mc_msfget(sk, &gsf,
814 (struct group_filter __user *)optval, optlen);
819 case IPV6_2292PKTOPTIONS:
824 if (sk->sk_type != SOCK_STREAM)
827 msg.msg_control = optval;
828 msg.msg_controllen = len;
832 skb = np->pktoptions;
834 atomic_inc(&skb->users);
838 int err = datagram_recv_ctl(sk, &msg, skb);
843 if (np->rxopt.bits.rxinfo) {
844 struct in6_pktinfo src_info;
845 src_info.ipi6_ifindex = np->mcast_oif;
846 ipv6_addr_copy(&src_info.ipi6_addr, &np->daddr);
847 put_cmsg(&msg, SOL_IPV6, IPV6_PKTINFO, sizeof(src_info), &src_info);
849 if (np->rxopt.bits.rxhlim) {
850 int hlim = np->mcast_hops;
851 put_cmsg(&msg, SOL_IPV6, IPV6_HOPLIMIT, sizeof(hlim), &hlim);
853 if (np->rxopt.bits.rxoinfo) {
854 struct in6_pktinfo src_info;
855 src_info.ipi6_ifindex = np->mcast_oif;
856 ipv6_addr_copy(&src_info.ipi6_addr, &np->daddr);
857 put_cmsg(&msg, SOL_IPV6, IPV6_2292PKTINFO, sizeof(src_info), &src_info);
859 if (np->rxopt.bits.rxohlim) {
860 int hlim = np->mcast_hops;
861 put_cmsg(&msg, SOL_IPV6, IPV6_2292HOPLIMIT, sizeof(hlim), &hlim);
864 len -= msg.msg_controllen;
865 return put_user(len, optlen);
869 struct dst_entry *dst;
872 dst = sk_dst_get(sk);
887 case IPV6_RECVPKTINFO:
888 val = np->rxopt.bits.rxinfo;
891 case IPV6_2292PKTINFO:
892 val = np->rxopt.bits.rxoinfo;
895 case IPV6_RECVHOPLIMIT:
896 val = np->rxopt.bits.rxhlim;
899 case IPV6_2292HOPLIMIT:
900 val = np->rxopt.bits.rxohlim;
904 val = np->rxopt.bits.srcrt;
908 val = np->rxopt.bits.osrcrt;
912 case IPV6_RTHDRDSTOPTS:
918 len = ipv6_getsockopt_sticky(sk, np->opt,
919 optname, optval, len);
921 return put_user(len, optlen);
924 case IPV6_RECVHOPOPTS:
925 val = np->rxopt.bits.hopopts;
928 case IPV6_2292HOPOPTS:
929 val = np->rxopt.bits.ohopopts;
932 case IPV6_RECVDSTOPTS:
933 val = np->rxopt.bits.dstopts;
936 case IPV6_2292DSTOPTS:
937 val = np->rxopt.bits.odstopts;
946 case IPV6_RECVTCLASS:
947 val = np->rxopt.bits.rxtclass;
951 val = np->rxopt.bits.rxflow;
954 case IPV6_UNICAST_HOPS:
955 case IPV6_MULTICAST_HOPS:
957 struct dst_entry *dst;
959 if (optname == IPV6_UNICAST_HOPS)
962 val = np->mcast_hops;
964 dst = sk_dst_get(sk);
967 val = ip6_dst_hoplimit(dst);
971 val = ipv6_devconf.hop_limit;
975 case IPV6_MULTICAST_LOOP:
979 case IPV6_MULTICAST_IF:
983 case IPV6_MTU_DISCOVER:
991 case IPV6_FLOWINFO_SEND:
995 case IPV6_ADDR_PREFERENCES:
998 if (np->srcprefs & IPV6_PREFER_SRC_TMP)
999 val |= IPV6_PREFER_SRC_TMP;
1000 else if (np->srcprefs & IPV6_PREFER_SRC_PUBLIC)
1001 val |= IPV6_PREFER_SRC_PUBLIC;
1003 /* XXX: should we return system default? */
1004 val |= IPV6_PREFER_SRC_PUBTMP_DEFAULT;
1007 if (np->srcprefs & IPV6_PREFER_SRC_COA)
1008 val |= IPV6_PREFER_SRC_COA;
1010 val |= IPV6_PREFER_SRC_HOME;
1014 return -ENOPROTOOPT;
1016 len = min_t(unsigned int, sizeof(int), len);
1017 if(put_user(len, optlen))
1019 if(copy_to_user(optval,&val,len))
1024 int ipv6_getsockopt(struct sock *sk, int level, int optname,
1025 char __user *optval, int __user *optlen)
1029 if (level == SOL_IP && sk->sk_type != SOCK_RAW)
1030 return udp_prot.getsockopt(sk, level, optname, optval, optlen);
1032 if(level != SOL_IPV6)
1033 return -ENOPROTOOPT;
1035 err = do_ipv6_getsockopt(sk, level, optname, optval, optlen);
1036 #ifdef CONFIG_NETFILTER
1037 /* we need to exclude all possible ENOPROTOOPTs except default case */
1038 if (err == -ENOPROTOOPT && optname != IPV6_2292PKTOPTIONS) {
1041 if (get_user(len, optlen))
1045 err = nf_getsockopt(sk, PF_INET6, optname, optval,
1049 err = put_user(len, optlen);
1055 EXPORT_SYMBOL(ipv6_getsockopt);
1057 #ifdef CONFIG_COMPAT
1058 int compat_ipv6_getsockopt(struct sock *sk, int level, int optname,
1059 char __user *optval, int __user *optlen)
1063 if (level == SOL_IP && sk->sk_type != SOCK_RAW) {
1064 if (udp_prot.compat_getsockopt != NULL)
1065 return udp_prot.compat_getsockopt(sk, level, optname,
1067 return udp_prot.getsockopt(sk, level, optname, optval, optlen);
1070 if (level != SOL_IPV6)
1071 return -ENOPROTOOPT;
1073 err = do_ipv6_getsockopt(sk, level, optname, optval, optlen);
1074 #ifdef CONFIG_NETFILTER
1075 /* we need to exclude all possible ENOPROTOOPTs except default case */
1076 if (err == -ENOPROTOOPT && optname != IPV6_2292PKTOPTIONS) {
1079 if (get_user(len, optlen))
1083 err = compat_nf_getsockopt(sk, PF_INET6,
1084 optname, optval, &len);
1087 err = put_user(len, optlen);
1093 EXPORT_SYMBOL(compat_ipv6_getsockopt);