3 * Linux INET6 implementation
6 * Pedro Roque <roque@di.fc.ul.pt>
8 * Adapted from linux/net/ipv4/raw.c
10 * $Id: raw.c,v 1.51 2002/02/01 22:01:04 davem Exp $
13 * Hideaki YOSHIFUJI : sin6_scope_id support
14 * YOSHIFUJI,H.@USAGI : raw checksum (RFC2292(bis) compliance)
15 * Kazunori MIYAZAWA @USAGI: change process style to use ip6_append_data
17 * This program is free software; you can redistribute it and/or
18 * modify it under the terms of the GNU General Public License
19 * as published by the Free Software Foundation; either version
20 * 2 of the License, or (at your option) any later version.
23 #include <linux/errno.h>
24 #include <linux/types.h>
25 #include <linux/socket.h>
26 #include <linux/sockios.h>
27 #include <linux/net.h>
28 #include <linux/in6.h>
29 #include <linux/netdevice.h>
30 #include <linux/if_arp.h>
31 #include <linux/icmpv6.h>
32 #include <linux/netfilter.h>
33 #include <linux/netfilter_ipv6.h>
34 #include <linux/skbuff.h>
35 #include <asm/uaccess.h>
36 #include <asm/ioctls.h>
38 #include <net/net_namespace.h>
44 #include <net/ndisc.h>
45 #include <net/protocol.h>
46 #include <net/ip6_route.h>
47 #include <net/ip6_checksum.h>
48 #include <net/addrconf.h>
49 #include <net/transp_v6.h>
51 #include <net/inet_common.h>
52 #include <net/tcp_states.h>
53 #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
56 #include <linux/mroute6.h>
59 #include <net/rawv6.h>
62 #include <linux/proc_fs.h>
63 #include <linux/seq_file.h>
65 static struct raw_hashinfo raw_v6_hashinfo = {
66 .lock = __RW_LOCK_UNLOCKED(raw_v6_hashinfo.lock),
69 static struct sock *__raw_v6_lookup(struct net *net, struct sock *sk,
70 unsigned short num, struct in6_addr *loc_addr,
71 struct in6_addr *rmt_addr, int dif)
73 struct hlist_node *node;
74 int is_multicast = ipv6_addr_is_multicast(loc_addr);
76 sk_for_each_from(sk, node)
77 if (inet_sk(sk)->num == num) {
78 struct ipv6_pinfo *np = inet6_sk(sk);
80 if (!net_eq(sock_net(sk), net))
83 if (!ipv6_addr_any(&np->daddr) &&
84 !ipv6_addr_equal(&np->daddr, rmt_addr))
87 if (sk->sk_bound_dev_if && sk->sk_bound_dev_if != dif)
90 if (!ipv6_addr_any(&np->rcv_saddr)) {
91 if (ipv6_addr_equal(&np->rcv_saddr, loc_addr))
94 inet6_mc_check(sk, loc_addr, rmt_addr))
109 static __inline__ int icmpv6_filter(struct sock *sk, struct sk_buff *skb)
111 struct icmp6hdr *icmph;
112 struct raw6_sock *rp = raw6_sk(sk);
114 if (pskb_may_pull(skb, sizeof(struct icmp6hdr))) {
115 __u32 *data = &rp->filter.data[0];
118 icmph = (struct icmp6hdr *) skb->data;
119 bit_nr = icmph->icmp6_type;
121 return (data[bit_nr >> 5] & (1 << (bit_nr & 31))) != 0;
126 #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
127 static int (*mh_filter)(struct sock *sock, struct sk_buff *skb);
129 int rawv6_mh_filter_register(int (*filter)(struct sock *sock,
130 struct sk_buff *skb))
132 rcu_assign_pointer(mh_filter, filter);
135 EXPORT_SYMBOL(rawv6_mh_filter_register);
137 int rawv6_mh_filter_unregister(int (*filter)(struct sock *sock,
138 struct sk_buff *skb))
140 rcu_assign_pointer(mh_filter, NULL);
144 EXPORT_SYMBOL(rawv6_mh_filter_unregister);
149 * demultiplex raw sockets.
150 * (should consider queueing the skb in the sock receive_queue
151 * without calling rawv6.c)
153 * Caller owns SKB so we must make clones.
155 static int ipv6_raw_deliver(struct sk_buff *skb, int nexthdr)
157 struct in6_addr *saddr;
158 struct in6_addr *daddr;
164 saddr = &ipv6_hdr(skb)->saddr;
167 hash = nexthdr & (MAX_INET_PROTOS - 1);
169 read_lock(&raw_v6_hashinfo.lock);
170 sk = sk_head(&raw_v6_hashinfo.ht[hash]);
175 net = dev_net(skb->dev);
176 sk = __raw_v6_lookup(net, sk, nexthdr, daddr, saddr, IP6CB(skb)->iif);
184 filtered = icmpv6_filter(sk, skb);
187 #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
190 /* XXX: To validate MH only once for each packet,
191 * this is placed here. It should be after checking
192 * xfrm policy, however it doesn't. The checking xfrm
193 * policy is placed in rawv6_rcv() because it is
194 * required for each socket.
196 int (*filter)(struct sock *sock, struct sk_buff *skb);
198 filter = rcu_dereference(mh_filter);
199 filtered = filter ? filter(sk, skb) : 0;
211 struct sk_buff *clone = skb_clone(skb, GFP_ATOMIC);
213 /* Not releasing hash table! */
216 rawv6_rcv(sk, clone);
219 sk = __raw_v6_lookup(net, sk_next(sk), nexthdr, daddr, saddr,
223 read_unlock(&raw_v6_hashinfo.lock);
227 int raw6_local_deliver(struct sk_buff *skb, int nexthdr)
231 raw_sk = sk_head(&raw_v6_hashinfo.ht[nexthdr & (MAX_INET_PROTOS - 1)]);
232 if (raw_sk && !ipv6_raw_deliver(skb, nexthdr))
235 return raw_sk != NULL;
238 /* This cleans up af_inet6 a bit. -DaveM */
239 static int rawv6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
241 struct inet_sock *inet = inet_sk(sk);
242 struct ipv6_pinfo *np = inet6_sk(sk);
243 struct sockaddr_in6 *addr = (struct sockaddr_in6 *) uaddr;
248 if (addr_len < SIN6_LEN_RFC2133)
250 addr_type = ipv6_addr_type(&addr->sin6_addr);
252 /* Raw sockets are IPv6 only */
253 if (addr_type == IPV6_ADDR_MAPPED)
254 return(-EADDRNOTAVAIL);
259 if (sk->sk_state != TCP_CLOSE)
262 /* Check if the address belongs to the host. */
263 if (addr_type != IPV6_ADDR_ANY) {
264 struct net_device *dev = NULL;
266 if (addr_type & IPV6_ADDR_LINKLOCAL) {
267 if (addr_len >= sizeof(struct sockaddr_in6) &&
268 addr->sin6_scope_id) {
269 /* Override any existing binding, if another
270 * one is supplied by user.
272 sk->sk_bound_dev_if = addr->sin6_scope_id;
275 /* Binding to link-local address requires an interface */
276 if (!sk->sk_bound_dev_if)
279 dev = dev_get_by_index(sock_net(sk), sk->sk_bound_dev_if);
286 /* ipv4 addr of the socket is invalid. Only the
287 * unspecified and mapped address have a v4 equivalent.
289 v4addr = LOOPBACK4_IPV6;
290 if (!(addr_type & IPV6_ADDR_MULTICAST)) {
291 err = -EADDRNOTAVAIL;
292 if (!ipv6_chk_addr(sock_net(sk), &addr->sin6_addr,
303 inet->rcv_saddr = inet->saddr = v4addr;
304 ipv6_addr_copy(&np->rcv_saddr, &addr->sin6_addr);
305 if (!(addr_type & IPV6_ADDR_MULTICAST))
306 ipv6_addr_copy(&np->saddr, &addr->sin6_addr);
313 static void rawv6_err(struct sock *sk, struct sk_buff *skb,
314 struct inet6_skb_parm *opt,
315 int type, int code, int offset, __be32 info)
317 struct inet_sock *inet = inet_sk(sk);
318 struct ipv6_pinfo *np = inet6_sk(sk);
322 /* Report error on raw socket, if:
323 1. User requested recverr.
324 2. Socket is connected (otherwise the error indication
325 is useless without recverr and error is hard.
327 if (!np->recverr && sk->sk_state != TCP_ESTABLISHED)
330 harderr = icmpv6_err_convert(type, code, &err);
331 if (type == ICMPV6_PKT_TOOBIG)
332 harderr = (np->pmtudisc == IPV6_PMTUDISC_DO);
335 u8 *payload = skb->data;
338 ipv6_icmp_error(sk, skb, err, 0, ntohl(info), payload);
341 if (np->recverr || harderr) {
343 sk->sk_error_report(sk);
347 void raw6_icmp_error(struct sk_buff *skb, int nexthdr,
348 int type, int code, int inner_offset, __be32 info)
352 struct in6_addr *saddr, *daddr;
355 hash = nexthdr & (RAW_HTABLE_SIZE - 1);
357 read_lock(&raw_v6_hashinfo.lock);
358 sk = sk_head(&raw_v6_hashinfo.ht[hash]);
360 saddr = &ipv6_hdr(skb)->saddr;
361 daddr = &ipv6_hdr(skb)->daddr;
362 net = dev_net(skb->dev);
364 while ((sk = __raw_v6_lookup(net, sk, nexthdr, saddr, daddr,
366 rawv6_err(sk, skb, NULL, type, code,
371 read_unlock(&raw_v6_hashinfo.lock);
374 static inline int rawv6_rcv_skb(struct sock * sk, struct sk_buff * skb)
376 if ((raw6_sk(sk)->checksum || sk->sk_filter) &&
377 skb_checksum_complete(skb)) {
378 atomic_inc(&sk->sk_drops);
383 /* Charge it to the socket. */
384 if (sock_queue_rcv_skb(sk,skb)<0) {
385 atomic_inc(&sk->sk_drops);
394 * This is next to useless...
395 * if we demultiplex in network layer we don't need the extra call
396 * just to queue the skb...
397 * maybe we could have the network decide upon a hint if it
398 * should call raw_rcv for demultiplexing
400 int rawv6_rcv(struct sock *sk, struct sk_buff *skb)
402 struct inet_sock *inet = inet_sk(sk);
403 struct raw6_sock *rp = raw6_sk(sk);
405 if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb)) {
406 atomic_inc(&sk->sk_drops);
412 skb->ip_summed = CHECKSUM_UNNECESSARY;
414 if (skb->ip_summed == CHECKSUM_COMPLETE) {
415 skb_postpull_rcsum(skb, skb_network_header(skb),
416 skb_network_header_len(skb));
417 if (!csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
418 &ipv6_hdr(skb)->daddr,
419 skb->len, inet->num, skb->csum))
420 skb->ip_summed = CHECKSUM_UNNECESSARY;
422 if (!skb_csum_unnecessary(skb))
423 skb->csum = ~csum_unfold(csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
424 &ipv6_hdr(skb)->daddr,
429 if (skb_checksum_complete(skb)) {
430 atomic_inc(&sk->sk_drops);
436 rawv6_rcv_skb(sk, skb);
442 * This should be easy, if there is something there
443 * we return it, otherwise we block.
446 static int rawv6_recvmsg(struct kiocb *iocb, struct sock *sk,
447 struct msghdr *msg, size_t len,
448 int noblock, int flags, int *addr_len)
450 struct ipv6_pinfo *np = inet6_sk(sk);
451 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)msg->msg_name;
460 *addr_len=sizeof(*sin6);
462 if (flags & MSG_ERRQUEUE)
463 return ipv6_recv_error(sk, msg, len);
465 skb = skb_recv_datagram(sk, flags, noblock, &err);
472 msg->msg_flags |= MSG_TRUNC;
475 if (skb_csum_unnecessary(skb)) {
476 err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
477 } else if (msg->msg_flags&MSG_TRUNC) {
478 if (__skb_checksum_complete(skb))
480 err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
482 err = skb_copy_and_csum_datagram_iovec(skb, 0, msg->msg_iov);
489 /* Copy the address. */
491 sin6->sin6_family = AF_INET6;
493 ipv6_addr_copy(&sin6->sin6_addr, &ipv6_hdr(skb)->saddr);
494 sin6->sin6_flowinfo = 0;
495 sin6->sin6_scope_id = 0;
496 if (ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL)
497 sin6->sin6_scope_id = IP6CB(skb)->iif;
500 sock_recv_timestamp(msg, sk, skb);
503 datagram_recv_ctl(sk, msg, skb);
506 if (flags & MSG_TRUNC)
510 skb_free_datagram(sk, skb);
515 skb_kill_datagram(sk, skb, flags);
517 /* Error for blocking case is chosen to masquerade
518 as some normal condition.
520 err = (flags&MSG_DONTWAIT) ? -EAGAIN : -EHOSTUNREACH;
521 atomic_inc(&sk->sk_drops);
525 static int rawv6_push_pending_frames(struct sock *sk, struct flowi *fl,
526 struct raw6_sock *rp)
539 if ((skb = skb_peek(&sk->sk_write_queue)) == NULL)
543 total_len = inet_sk(sk)->cork.length - (skb_network_header(skb) -
545 if (offset >= total_len - 1) {
547 ip6_flush_pending_frames(sk);
551 /* should be check HW csum miyazawa */
552 if (skb_queue_len(&sk->sk_write_queue) == 1) {
554 * Only one fragment on the socket.
556 tmp_csum = skb->csum;
558 struct sk_buff *csum_skb = NULL;
561 skb_queue_walk(&sk->sk_write_queue, skb) {
562 tmp_csum = csum_add(tmp_csum, skb->csum);
567 len = skb->len - skb_transport_offset(skb);
579 offset += skb_transport_offset(skb);
580 if (skb_copy_bits(skb, offset, &csum, 2))
583 /* in case cksum was not initialized */
585 tmp_csum = csum_sub(tmp_csum, csum_unfold(csum));
587 csum = csum_ipv6_magic(&fl->fl6_src,
589 total_len, fl->proto, tmp_csum);
591 if (csum == 0 && fl->proto == IPPROTO_UDP)
592 csum = CSUM_MANGLED_0;
594 if (skb_store_bits(skb, offset, &csum, 2))
598 err = ip6_push_pending_frames(sk);
603 static int rawv6_send_hdrinc(struct sock *sk, void *from, int length,
604 struct flowi *fl, struct rt6_info *rt,
607 struct ipv6_pinfo *np = inet6_sk(sk);
613 if (length > rt->u.dst.dev->mtu) {
614 ipv6_local_error(sk, EMSGSIZE, fl, rt->u.dst.dev->mtu);
620 hh_len = LL_RESERVED_SPACE(rt->u.dst.dev);
622 skb = sock_alloc_send_skb(sk, length+hh_len+15,
623 flags&MSG_DONTWAIT, &err);
626 skb_reserve(skb, hh_len);
628 skb->priority = sk->sk_priority;
629 skb->mark = sk->sk_mark;
630 skb->dst = dst_clone(&rt->u.dst);
632 skb_put(skb, length);
633 skb_reset_network_header(skb);
636 skb->ip_summed = CHECKSUM_NONE;
638 skb->transport_header = skb->network_header;
639 err = memcpy_fromiovecend((void *)iph, from, 0, length);
643 IP6_INC_STATS(rt->rt6i_idev, IPSTATS_MIB_OUTREQUESTS);
644 err = NF_HOOK(PF_INET6, NF_INET_LOCAL_OUT, skb, NULL, rt->u.dst.dev,
647 err = np->recverr ? net_xmit_errno(err) : 0;
657 IP6_INC_STATS(rt->rt6i_idev, IPSTATS_MIB_OUTDISCARDS);
661 static int rawv6_probe_proto_opt(struct flowi *fl, struct msghdr *msg)
664 u8 __user *type = NULL;
665 u8 __user *code = NULL;
673 for (i = 0; i < msg->msg_iovlen; i++) {
674 iov = &msg->msg_iov[i];
680 /* check if one-byte field is readable or not. */
681 if (iov->iov_base && iov->iov_len < 1)
685 type = iov->iov_base;
686 /* check if code field is readable or not. */
687 if (iov->iov_len > 1)
690 code = iov->iov_base;
693 if (get_user(fl->fl_icmp_type, type) ||
694 get_user(fl->fl_icmp_code, code))
700 if (iov->iov_base && iov->iov_len < 1)
702 /* check if type field is readable or not. */
703 if (iov->iov_len > 2 - len) {
704 u8 __user *p = iov->iov_base;
705 if (get_user(fl->fl_mh_type, &p[2 - len]))
722 static int rawv6_sendmsg(struct kiocb *iocb, struct sock *sk,
723 struct msghdr *msg, size_t len)
725 struct ipv6_txoptions opt_space;
726 struct sockaddr_in6 * sin6 = (struct sockaddr_in6 *) msg->msg_name;
727 struct in6_addr *daddr, *final_p = NULL, final;
728 struct inet_sock *inet = inet_sk(sk);
729 struct ipv6_pinfo *np = inet6_sk(sk);
730 struct raw6_sock *rp = raw6_sk(sk);
731 struct ipv6_txoptions *opt = NULL;
732 struct ip6_flowlabel *flowlabel = NULL;
733 struct dst_entry *dst = NULL;
735 int addr_len = msg->msg_namelen;
741 /* Rough check on arithmetic overflow,
742 better check is made in ip6_append_data().
747 /* Mirror BSD error message compatibility */
748 if (msg->msg_flags & MSG_OOB)
752 * Get and verify the address.
754 memset(&fl, 0, sizeof(fl));
756 fl.mark = sk->sk_mark;
759 if (addr_len < SIN6_LEN_RFC2133)
762 if (sin6->sin6_family && sin6->sin6_family != AF_INET6)
763 return(-EAFNOSUPPORT);
765 /* port is the proto value [0..255] carried in nexthdr */
766 proto = ntohs(sin6->sin6_port);
770 else if (proto != inet->num)
776 daddr = &sin6->sin6_addr;
778 fl.fl6_flowlabel = sin6->sin6_flowinfo&IPV6_FLOWINFO_MASK;
779 if (fl.fl6_flowlabel&IPV6_FLOWLABEL_MASK) {
780 flowlabel = fl6_sock_lookup(sk, fl.fl6_flowlabel);
781 if (flowlabel == NULL)
783 daddr = &flowlabel->dst;
788 * Otherwise it will be difficult to maintain
791 if (sk->sk_state == TCP_ESTABLISHED &&
792 ipv6_addr_equal(daddr, &np->daddr))
795 if (addr_len >= sizeof(struct sockaddr_in6) &&
796 sin6->sin6_scope_id &&
797 ipv6_addr_type(daddr)&IPV6_ADDR_LINKLOCAL)
798 fl.oif = sin6->sin6_scope_id;
800 if (sk->sk_state != TCP_ESTABLISHED)
801 return -EDESTADDRREQ;
805 fl.fl6_flowlabel = np->flow_label;
808 if (ipv6_addr_any(daddr)) {
810 * unspecified destination address
811 * treated as error... is this correct ?
813 fl6_sock_release(flowlabel);
818 fl.oif = sk->sk_bound_dev_if;
820 if (msg->msg_controllen) {
822 memset(opt, 0, sizeof(struct ipv6_txoptions));
823 opt->tot_len = sizeof(struct ipv6_txoptions);
825 err = datagram_send_ctl(msg, &fl, opt, &hlimit, &tclass);
827 fl6_sock_release(flowlabel);
830 if ((fl.fl6_flowlabel&IPV6_FLOWLABEL_MASK) && !flowlabel) {
831 flowlabel = fl6_sock_lookup(sk, fl.fl6_flowlabel);
832 if (flowlabel == NULL)
835 if (!(opt->opt_nflen|opt->opt_flen))
841 opt = fl6_merge_options(&opt_space, flowlabel, opt);
842 opt = ipv6_fixup_options(&opt_space, opt);
845 err = rawv6_probe_proto_opt(&fl, msg);
849 ipv6_addr_copy(&fl.fl6_dst, daddr);
850 if (ipv6_addr_any(&fl.fl6_src) && !ipv6_addr_any(&np->saddr))
851 ipv6_addr_copy(&fl.fl6_src, &np->saddr);
853 /* merge ip6_build_xmit from ip6_output */
854 if (opt && opt->srcrt) {
855 struct rt0_hdr *rt0 = (struct rt0_hdr *) opt->srcrt;
856 ipv6_addr_copy(&final, &fl.fl6_dst);
857 ipv6_addr_copy(&fl.fl6_dst, rt0->addr);
861 if (!fl.oif && ipv6_addr_is_multicast(&fl.fl6_dst))
862 fl.oif = np->mcast_oif;
863 security_sk_classify_flow(sk, &fl);
865 err = ip6_dst_lookup(sk, &dst, &fl);
869 ipv6_addr_copy(&fl.fl6_dst, final_p);
871 if ((err = __xfrm_lookup(&dst, &fl, sk, XFRM_LOOKUP_WAIT)) < 0) {
873 err = ip6_dst_blackhole(sk, &dst, &fl);
879 if (ipv6_addr_is_multicast(&fl.fl6_dst))
880 hlimit = np->mcast_hops;
882 hlimit = np->hop_limit;
884 hlimit = ip6_dst_hoplimit(dst);
893 if (msg->msg_flags&MSG_CONFIRM)
898 err = rawv6_send_hdrinc(sk, msg->msg_iov, len, &fl, (struct rt6_info*)dst, msg->msg_flags);
901 err = ip6_append_data(sk, ip_generic_getfrag, msg->msg_iov,
902 len, 0, hlimit, tclass, opt, &fl, (struct rt6_info*)dst,
906 ip6_flush_pending_frames(sk);
907 else if (!(msg->msg_flags & MSG_MORE))
908 err = rawv6_push_pending_frames(sk, &fl, rp);
914 fl6_sock_release(flowlabel);
915 return err<0?err:len;
918 if (!(msg->msg_flags & MSG_PROBE) || len)
919 goto back_from_confirm;
924 static int rawv6_seticmpfilter(struct sock *sk, int level, int optname,
925 char __user *optval, int optlen)
929 if (optlen > sizeof(struct icmp6_filter))
930 optlen = sizeof(struct icmp6_filter);
931 if (copy_from_user(&raw6_sk(sk)->filter, optval, optlen))
941 static int rawv6_geticmpfilter(struct sock *sk, int level, int optname,
942 char __user *optval, int __user *optlen)
948 if (get_user(len, optlen))
952 if (len > sizeof(struct icmp6_filter))
953 len = sizeof(struct icmp6_filter);
954 if (put_user(len, optlen))
956 if (copy_to_user(optval, &raw6_sk(sk)->filter, len))
967 static int do_rawv6_setsockopt(struct sock *sk, int level, int optname,
968 char __user *optval, int optlen)
970 struct raw6_sock *rp = raw6_sk(sk);
973 if (get_user(val, (int __user *)optval))
978 /* You may get strange result with a positive odd offset;
979 RFC2292bis agrees with me. */
980 if (val > 0 && (val&1))
993 return(-ENOPROTOOPT);
997 static int rawv6_setsockopt(struct sock *sk, int level, int optname,
998 char __user *optval, int optlen)
1005 if (inet_sk(sk)->num != IPPROTO_ICMPV6)
1007 return rawv6_seticmpfilter(sk, level, optname, optval,
1010 if (optname == IPV6_CHECKSUM)
1013 return ipv6_setsockopt(sk, level, optname, optval,
1017 return do_rawv6_setsockopt(sk, level, optname, optval, optlen);
1020 #ifdef CONFIG_COMPAT
1021 static int compat_rawv6_setsockopt(struct sock *sk, int level, int optname,
1022 char __user *optval, int optlen)
1028 if (inet_sk(sk)->num != IPPROTO_ICMPV6)
1030 return rawv6_seticmpfilter(sk, level, optname, optval, optlen);
1032 if (optname == IPV6_CHECKSUM)
1035 return compat_ipv6_setsockopt(sk, level, optname,
1038 return do_rawv6_setsockopt(sk, level, optname, optval, optlen);
1042 static int do_rawv6_getsockopt(struct sock *sk, int level, int optname,
1043 char __user *optval, int __user *optlen)
1045 struct raw6_sock *rp = raw6_sk(sk);
1048 if (get_user(len,optlen))
1053 if (rp->checksum == 0)
1060 return -ENOPROTOOPT;
1063 len = min_t(unsigned int, sizeof(int), len);
1065 if (put_user(len, optlen))
1067 if (copy_to_user(optval,&val,len))
1072 static int rawv6_getsockopt(struct sock *sk, int level, int optname,
1073 char __user *optval, int __user *optlen)
1080 if (inet_sk(sk)->num != IPPROTO_ICMPV6)
1082 return rawv6_geticmpfilter(sk, level, optname, optval,
1085 if (optname == IPV6_CHECKSUM)
1088 return ipv6_getsockopt(sk, level, optname, optval,
1092 return do_rawv6_getsockopt(sk, level, optname, optval, optlen);
1095 #ifdef CONFIG_COMPAT
1096 static int compat_rawv6_getsockopt(struct sock *sk, int level, int optname,
1097 char __user *optval, int __user *optlen)
1103 if (inet_sk(sk)->num != IPPROTO_ICMPV6)
1105 return rawv6_geticmpfilter(sk, level, optname, optval, optlen);
1107 if (optname == IPV6_CHECKSUM)
1110 return compat_ipv6_getsockopt(sk, level, optname,
1113 return do_rawv6_getsockopt(sk, level, optname, optval, optlen);
1117 static int rawv6_ioctl(struct sock *sk, int cmd, unsigned long arg)
1122 int amount = atomic_read(&sk->sk_wmem_alloc);
1123 return put_user(amount, (int __user *)arg);
1127 struct sk_buff *skb;
1130 spin_lock_bh(&sk->sk_receive_queue.lock);
1131 skb = skb_peek(&sk->sk_receive_queue);
1133 amount = skb->tail - skb->transport_header;
1134 spin_unlock_bh(&sk->sk_receive_queue.lock);
1135 return put_user(amount, (int __user *)arg);
1139 #ifdef CONFIG_IPV6_MROUTE
1140 return ip6mr_ioctl(sk, cmd, (void __user *)arg);
1142 return -ENOIOCTLCMD;
1147 static void rawv6_close(struct sock *sk, long timeout)
1149 if (inet_sk(sk)->num == IPPROTO_RAW)
1150 ip6_ra_control(sk, -1, NULL);
1152 sk_common_release(sk);
1155 static int rawv6_init_sk(struct sock *sk)
1157 struct raw6_sock *rp = raw6_sk(sk);
1159 switch (inet_sk(sk)->num) {
1160 case IPPROTO_ICMPV6:
1174 struct proto rawv6_prot = {
1176 .owner = THIS_MODULE,
1177 .close = rawv6_close,
1178 .connect = ip6_datagram_connect,
1179 .disconnect = udp_disconnect,
1180 .ioctl = rawv6_ioctl,
1181 .init = rawv6_init_sk,
1182 .destroy = inet6_destroy_sock,
1183 .setsockopt = rawv6_setsockopt,
1184 .getsockopt = rawv6_getsockopt,
1185 .sendmsg = rawv6_sendmsg,
1186 .recvmsg = rawv6_recvmsg,
1188 .backlog_rcv = rawv6_rcv_skb,
1189 .hash = raw_hash_sk,
1190 .unhash = raw_unhash_sk,
1191 .obj_size = sizeof(struct raw6_sock),
1192 .h.raw_hash = &raw_v6_hashinfo,
1193 #ifdef CONFIG_COMPAT
1194 .compat_setsockopt = compat_rawv6_setsockopt,
1195 .compat_getsockopt = compat_rawv6_getsockopt,
1199 #ifdef CONFIG_PROC_FS
1200 static void raw6_sock_seq_show(struct seq_file *seq, struct sock *sp, int i)
1202 struct ipv6_pinfo *np = inet6_sk(sp);
1203 struct in6_addr *dest, *src;
1207 src = &np->rcv_saddr;
1209 srcp = inet_sk(sp)->num;
1211 "%4d: %08X%08X%08X%08X:%04X %08X%08X%08X%08X:%04X "
1212 "%02X %08X:%08X %02X:%08lX %08X %5d %8d %lu %d %p %d\n",
1214 src->s6_addr32[0], src->s6_addr32[1],
1215 src->s6_addr32[2], src->s6_addr32[3], srcp,
1216 dest->s6_addr32[0], dest->s6_addr32[1],
1217 dest->s6_addr32[2], dest->s6_addr32[3], destp,
1219 atomic_read(&sp->sk_wmem_alloc),
1220 atomic_read(&sp->sk_rmem_alloc),
1224 atomic_read(&sp->sk_refcnt), sp, atomic_read(&sp->sk_drops));
1227 static int raw6_seq_show(struct seq_file *seq, void *v)
1229 if (v == SEQ_START_TOKEN)
1234 "st tx_queue rx_queue tr tm->when retrnsmt"
1235 " uid timeout inode drops\n");
1237 raw6_sock_seq_show(seq, v, raw_seq_private(seq)->bucket);
1241 static const struct seq_operations raw6_seq_ops = {
1242 .start = raw_seq_start,
1243 .next = raw_seq_next,
1244 .stop = raw_seq_stop,
1245 .show = raw6_seq_show,
1248 static int raw6_seq_open(struct inode *inode, struct file *file)
1250 return raw_seq_open(inode, file, &raw_v6_hashinfo, &raw6_seq_ops);
1253 static const struct file_operations raw6_seq_fops = {
1254 .owner = THIS_MODULE,
1255 .open = raw6_seq_open,
1257 .llseek = seq_lseek,
1258 .release = seq_release_net,
1261 static int raw6_init_net(struct net *net)
1263 if (!proc_net_fops_create(net, "raw6", S_IRUGO, &raw6_seq_fops))
1269 static void raw6_exit_net(struct net *net)
1271 proc_net_remove(net, "raw6");
1274 static struct pernet_operations raw6_net_ops = {
1275 .init = raw6_init_net,
1276 .exit = raw6_exit_net,
1279 int __init raw6_proc_init(void)
1281 return register_pernet_subsys(&raw6_net_ops);
1284 void raw6_proc_exit(void)
1286 unregister_pernet_subsys(&raw6_net_ops);
1288 #endif /* CONFIG_PROC_FS */
1290 /* Same as inet6_dgram_ops, sans udp_poll. */
1291 static const struct proto_ops inet6_sockraw_ops = {
1293 .owner = THIS_MODULE,
1294 .release = inet6_release,
1296 .connect = inet_dgram_connect, /* ok */
1297 .socketpair = sock_no_socketpair, /* a do nothing */
1298 .accept = sock_no_accept, /* a do nothing */
1299 .getname = inet6_getname,
1300 .poll = datagram_poll, /* ok */
1301 .ioctl = inet6_ioctl, /* must change */
1302 .listen = sock_no_listen, /* ok */
1303 .shutdown = inet_shutdown, /* ok */
1304 .setsockopt = sock_common_setsockopt, /* ok */
1305 .getsockopt = sock_common_getsockopt, /* ok */
1306 .sendmsg = inet_sendmsg, /* ok */
1307 .recvmsg = sock_common_recvmsg, /* ok */
1308 .mmap = sock_no_mmap,
1309 .sendpage = sock_no_sendpage,
1310 #ifdef CONFIG_COMPAT
1311 .compat_setsockopt = compat_sock_common_setsockopt,
1312 .compat_getsockopt = compat_sock_common_getsockopt,
1316 static struct inet_protosw rawv6_protosw = {
1318 .protocol = IPPROTO_IP, /* wild card */
1319 .prot = &rawv6_prot,
1320 .ops = &inet6_sockraw_ops,
1321 .capability = CAP_NET_RAW,
1322 .no_check = UDP_CSUM_DEFAULT,
1323 .flags = INET_PROTOSW_REUSE,
1326 int __init rawv6_init(void)
1330 ret = inet6_register_protosw(&rawv6_protosw);
1337 void rawv6_exit(void)
1339 inet6_unregister_protosw(&rawv6_protosw);