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)
58 #include <net/rawv6.h>
61 #include <linux/proc_fs.h>
62 #include <linux/seq_file.h>
64 static struct raw_hashinfo raw_v6_hashinfo = {
65 .lock = __RW_LOCK_UNLOCKED(),
68 static void raw_v6_hash(struct sock *sk)
70 raw_hash_sk(sk, &raw_v6_hashinfo);
73 static void raw_v6_unhash(struct sock *sk)
75 raw_unhash_sk(sk, &raw_v6_hashinfo);
79 static struct sock *__raw_v6_lookup(struct sock *sk, unsigned short num,
80 struct in6_addr *loc_addr, struct in6_addr *rmt_addr, int dif)
82 struct hlist_node *node;
83 int is_multicast = ipv6_addr_is_multicast(loc_addr);
85 sk_for_each_from(sk, node)
86 if (inet_sk(sk)->num == num) {
87 struct ipv6_pinfo *np = inet6_sk(sk);
89 if (!ipv6_addr_any(&np->daddr) &&
90 !ipv6_addr_equal(&np->daddr, rmt_addr))
93 if (sk->sk_bound_dev_if && sk->sk_bound_dev_if != dif)
96 if (!ipv6_addr_any(&np->rcv_saddr)) {
97 if (ipv6_addr_equal(&np->rcv_saddr, loc_addr))
100 inet6_mc_check(sk, loc_addr, rmt_addr))
115 static __inline__ int icmpv6_filter(struct sock *sk, struct sk_buff *skb)
117 struct icmp6hdr *icmph;
118 struct raw6_sock *rp = raw6_sk(sk);
120 if (pskb_may_pull(skb, sizeof(struct icmp6hdr))) {
121 __u32 *data = &rp->filter.data[0];
124 icmph = (struct icmp6hdr *) skb->data;
125 bit_nr = icmph->icmp6_type;
127 return (data[bit_nr >> 5] & (1 << (bit_nr & 31))) != 0;
132 #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
133 static int (*mh_filter)(struct sock *sock, struct sk_buff *skb);
135 int rawv6_mh_filter_register(int (*filter)(struct sock *sock,
136 struct sk_buff *skb))
138 rcu_assign_pointer(mh_filter, filter);
141 EXPORT_SYMBOL(rawv6_mh_filter_register);
143 int rawv6_mh_filter_unregister(int (*filter)(struct sock *sock,
144 struct sk_buff *skb))
146 rcu_assign_pointer(mh_filter, NULL);
150 EXPORT_SYMBOL(rawv6_mh_filter_unregister);
155 * demultiplex raw sockets.
156 * (should consider queueing the skb in the sock receive_queue
157 * without calling rawv6.c)
159 * Caller owns SKB so we must make clones.
161 static int ipv6_raw_deliver(struct sk_buff *skb, int nexthdr)
163 struct in6_addr *saddr;
164 struct in6_addr *daddr;
169 saddr = &ipv6_hdr(skb)->saddr;
172 hash = nexthdr & (MAX_INET_PROTOS - 1);
174 read_lock(&raw_v6_hashinfo.lock);
175 sk = sk_head(&raw_v6_hashinfo.ht[hash]);
178 * The first socket found will be delivered after
179 * delivery to transport protocols.
185 sk = __raw_v6_lookup(sk, nexthdr, daddr, saddr, IP6CB(skb)->iif);
193 filtered = icmpv6_filter(sk, skb);
196 #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
199 /* XXX: To validate MH only once for each packet,
200 * this is placed here. It should be after checking
201 * xfrm policy, however it doesn't. The checking xfrm
202 * policy is placed in rawv6_rcv() because it is
203 * required for each socket.
205 int (*filter)(struct sock *sock, struct sk_buff *skb);
207 filter = rcu_dereference(mh_filter);
208 filtered = filter ? filter(sk, skb) : 0;
220 struct sk_buff *clone = skb_clone(skb, GFP_ATOMIC);
222 /* Not releasing hash table! */
225 rawv6_rcv(sk, clone);
228 sk = __raw_v6_lookup(sk_next(sk), nexthdr, daddr, saddr,
232 read_unlock(&raw_v6_hashinfo.lock);
236 int raw6_local_deliver(struct sk_buff *skb, int nexthdr)
240 raw_sk = sk_head(&raw_v6_hashinfo.ht[nexthdr & (MAX_INET_PROTOS - 1)]);
241 if (raw_sk && !ipv6_raw_deliver(skb, nexthdr))
244 return raw_sk != NULL;
247 /* This cleans up af_inet6 a bit. -DaveM */
248 static int rawv6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
250 struct inet_sock *inet = inet_sk(sk);
251 struct ipv6_pinfo *np = inet6_sk(sk);
252 struct sockaddr_in6 *addr = (struct sockaddr_in6 *) uaddr;
257 if (addr_len < SIN6_LEN_RFC2133)
259 addr_type = ipv6_addr_type(&addr->sin6_addr);
261 /* Raw sockets are IPv6 only */
262 if (addr_type == IPV6_ADDR_MAPPED)
263 return(-EADDRNOTAVAIL);
268 if (sk->sk_state != TCP_CLOSE)
271 /* Check if the address belongs to the host. */
272 if (addr_type != IPV6_ADDR_ANY) {
273 struct net_device *dev = NULL;
275 if (addr_type & IPV6_ADDR_LINKLOCAL) {
276 if (addr_len >= sizeof(struct sockaddr_in6) &&
277 addr->sin6_scope_id) {
278 /* Override any existing binding, if another
279 * one is supplied by user.
281 sk->sk_bound_dev_if = addr->sin6_scope_id;
284 /* Binding to link-local address requires an interface */
285 if (!sk->sk_bound_dev_if)
288 dev = dev_get_by_index(&init_net, sk->sk_bound_dev_if);
295 /* ipv4 addr of the socket is invalid. Only the
296 * unspecified and mapped address have a v4 equivalent.
298 v4addr = LOOPBACK4_IPV6;
299 if (!(addr_type & IPV6_ADDR_MULTICAST)) {
300 err = -EADDRNOTAVAIL;
301 if (!ipv6_chk_addr(&init_net, &addr->sin6_addr,
312 inet->rcv_saddr = inet->saddr = v4addr;
313 ipv6_addr_copy(&np->rcv_saddr, &addr->sin6_addr);
314 if (!(addr_type & IPV6_ADDR_MULTICAST))
315 ipv6_addr_copy(&np->saddr, &addr->sin6_addr);
322 static void rawv6_err(struct sock *sk, struct sk_buff *skb,
323 struct inet6_skb_parm *opt,
324 int type, int code, int offset, __be32 info)
326 struct inet_sock *inet = inet_sk(sk);
327 struct ipv6_pinfo *np = inet6_sk(sk);
331 /* Report error on raw socket, if:
332 1. User requested recverr.
333 2. Socket is connected (otherwise the error indication
334 is useless without recverr and error is hard.
336 if (!np->recverr && sk->sk_state != TCP_ESTABLISHED)
339 harderr = icmpv6_err_convert(type, code, &err);
340 if (type == ICMPV6_PKT_TOOBIG)
341 harderr = (np->pmtudisc == IPV6_PMTUDISC_DO);
344 u8 *payload = skb->data;
347 ipv6_icmp_error(sk, skb, err, 0, ntohl(info), payload);
350 if (np->recverr || harderr) {
352 sk->sk_error_report(sk);
356 void raw6_icmp_error(struct sk_buff *skb, int nexthdr,
357 int type, int code, int inner_offset, __be32 info)
361 struct in6_addr *saddr, *daddr;
363 hash = nexthdr & (RAW_HTABLE_SIZE - 1);
365 read_lock(&raw_v6_hashinfo.lock);
366 sk = sk_head(&raw_v6_hashinfo.ht[hash]);
368 saddr = &ipv6_hdr(skb)->saddr;
369 daddr = &ipv6_hdr(skb)->daddr;
371 while ((sk = __raw_v6_lookup(sk, nexthdr, saddr, daddr,
373 rawv6_err(sk, skb, NULL, type, code,
378 read_unlock(&raw_v6_hashinfo.lock);
381 static inline int rawv6_rcv_skb(struct sock * sk, struct sk_buff * skb)
383 if ((raw6_sk(sk)->checksum || sk->sk_filter) &&
384 skb_checksum_complete(skb)) {
385 atomic_inc(&sk->sk_drops);
390 /* Charge it to the socket. */
391 if (sock_queue_rcv_skb(sk,skb)<0) {
392 atomic_inc(&sk->sk_drops);
401 * This is next to useless...
402 * if we demultiplex in network layer we don't need the extra call
403 * just to queue the skb...
404 * maybe we could have the network decide upon a hint if it
405 * should call raw_rcv for demultiplexing
407 int rawv6_rcv(struct sock *sk, struct sk_buff *skb)
409 struct inet_sock *inet = inet_sk(sk);
410 struct raw6_sock *rp = raw6_sk(sk);
412 if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb)) {
413 atomic_inc(&sk->sk_drops);
419 skb->ip_summed = CHECKSUM_UNNECESSARY;
421 if (skb->ip_summed == CHECKSUM_COMPLETE) {
422 skb_postpull_rcsum(skb, skb_network_header(skb),
423 skb_network_header_len(skb));
424 if (!csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
425 &ipv6_hdr(skb)->daddr,
426 skb->len, inet->num, skb->csum))
427 skb->ip_summed = CHECKSUM_UNNECESSARY;
429 if (!skb_csum_unnecessary(skb))
430 skb->csum = ~csum_unfold(csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
431 &ipv6_hdr(skb)->daddr,
436 if (skb_checksum_complete(skb)) {
437 atomic_inc(&sk->sk_drops);
443 rawv6_rcv_skb(sk, skb);
449 * This should be easy, if there is something there
450 * we return it, otherwise we block.
453 static int rawv6_recvmsg(struct kiocb *iocb, struct sock *sk,
454 struct msghdr *msg, size_t len,
455 int noblock, int flags, int *addr_len)
457 struct ipv6_pinfo *np = inet6_sk(sk);
458 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)msg->msg_name;
467 *addr_len=sizeof(*sin6);
469 if (flags & MSG_ERRQUEUE)
470 return ipv6_recv_error(sk, msg, len);
472 skb = skb_recv_datagram(sk, flags, noblock, &err);
479 msg->msg_flags |= MSG_TRUNC;
482 if (skb_csum_unnecessary(skb)) {
483 err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
484 } else if (msg->msg_flags&MSG_TRUNC) {
485 if (__skb_checksum_complete(skb))
487 err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
489 err = skb_copy_and_csum_datagram_iovec(skb, 0, msg->msg_iov);
496 /* Copy the address. */
498 sin6->sin6_family = AF_INET6;
500 ipv6_addr_copy(&sin6->sin6_addr, &ipv6_hdr(skb)->saddr);
501 sin6->sin6_flowinfo = 0;
502 sin6->sin6_scope_id = 0;
503 if (ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL)
504 sin6->sin6_scope_id = IP6CB(skb)->iif;
507 sock_recv_timestamp(msg, sk, skb);
510 datagram_recv_ctl(sk, msg, skb);
513 if (flags & MSG_TRUNC)
517 skb_free_datagram(sk, skb);
522 skb_kill_datagram(sk, skb, flags);
524 /* Error for blocking case is chosen to masquerade
525 as some normal condition.
527 err = (flags&MSG_DONTWAIT) ? -EAGAIN : -EHOSTUNREACH;
528 atomic_inc(&sk->sk_drops);
532 static int rawv6_push_pending_frames(struct sock *sk, struct flowi *fl,
533 struct raw6_sock *rp)
546 if ((skb = skb_peek(&sk->sk_write_queue)) == NULL)
550 total_len = inet_sk(sk)->cork.length - (skb_network_header(skb) -
552 if (offset >= total_len - 1) {
554 ip6_flush_pending_frames(sk);
558 /* should be check HW csum miyazawa */
559 if (skb_queue_len(&sk->sk_write_queue) == 1) {
561 * Only one fragment on the socket.
563 tmp_csum = skb->csum;
565 struct sk_buff *csum_skb = NULL;
568 skb_queue_walk(&sk->sk_write_queue, skb) {
569 tmp_csum = csum_add(tmp_csum, skb->csum);
574 len = skb->len - skb_transport_offset(skb);
586 offset += skb_transport_offset(skb);
587 if (skb_copy_bits(skb, offset, &csum, 2))
590 /* in case cksum was not initialized */
592 tmp_csum = csum_sub(tmp_csum, csum_unfold(csum));
594 csum = csum_ipv6_magic(&fl->fl6_src,
596 total_len, fl->proto, tmp_csum);
598 if (csum == 0 && fl->proto == IPPROTO_UDP)
599 csum = CSUM_MANGLED_0;
601 if (skb_store_bits(skb, offset, &csum, 2))
605 err = ip6_push_pending_frames(sk);
610 static int rawv6_send_hdrinc(struct sock *sk, void *from, int length,
611 struct flowi *fl, struct rt6_info *rt,
614 struct ipv6_pinfo *np = inet6_sk(sk);
620 if (length > rt->u.dst.dev->mtu) {
621 ipv6_local_error(sk, EMSGSIZE, fl, rt->u.dst.dev->mtu);
627 hh_len = LL_RESERVED_SPACE(rt->u.dst.dev);
629 skb = sock_alloc_send_skb(sk, length+hh_len+15,
630 flags&MSG_DONTWAIT, &err);
633 skb_reserve(skb, hh_len);
635 skb->priority = sk->sk_priority;
636 skb->dst = dst_clone(&rt->u.dst);
638 skb_put(skb, length);
639 skb_reset_network_header(skb);
642 skb->ip_summed = CHECKSUM_NONE;
644 skb->transport_header = skb->network_header;
645 err = memcpy_fromiovecend((void *)iph, from, 0, length);
649 IP6_INC_STATS(rt->rt6i_idev, IPSTATS_MIB_OUTREQUESTS);
650 err = NF_HOOK(PF_INET6, NF_INET_LOCAL_OUT, skb, NULL, rt->u.dst.dev,
653 err = np->recverr ? net_xmit_errno(err) : 0;
663 IP6_INC_STATS(rt->rt6i_idev, IPSTATS_MIB_OUTDISCARDS);
667 static int rawv6_probe_proto_opt(struct flowi *fl, struct msghdr *msg)
670 u8 __user *type = NULL;
671 u8 __user *code = NULL;
679 for (i = 0; i < msg->msg_iovlen; i++) {
680 iov = &msg->msg_iov[i];
686 /* check if one-byte field is readable or not. */
687 if (iov->iov_base && iov->iov_len < 1)
691 type = iov->iov_base;
692 /* check if code field is readable or not. */
693 if (iov->iov_len > 1)
696 code = iov->iov_base;
699 if (get_user(fl->fl_icmp_type, type) ||
700 get_user(fl->fl_icmp_code, code))
706 if (iov->iov_base && iov->iov_len < 1)
708 /* check if type field is readable or not. */
709 if (iov->iov_len > 2 - len) {
710 u8 __user *p = iov->iov_base;
711 if (get_user(fl->fl_mh_type, &p[2 - len]))
728 static int rawv6_sendmsg(struct kiocb *iocb, struct sock *sk,
729 struct msghdr *msg, size_t len)
731 struct ipv6_txoptions opt_space;
732 struct sockaddr_in6 * sin6 = (struct sockaddr_in6 *) msg->msg_name;
733 struct in6_addr *daddr, *final_p = NULL, final;
734 struct inet_sock *inet = inet_sk(sk);
735 struct ipv6_pinfo *np = inet6_sk(sk);
736 struct raw6_sock *rp = raw6_sk(sk);
737 struct ipv6_txoptions *opt = NULL;
738 struct ip6_flowlabel *flowlabel = NULL;
739 struct dst_entry *dst = NULL;
741 int addr_len = msg->msg_namelen;
747 /* Rough check on arithmetic overflow,
748 better check is made in ip6_append_data().
753 /* Mirror BSD error message compatibility */
754 if (msg->msg_flags & MSG_OOB)
758 * Get and verify the address.
760 memset(&fl, 0, sizeof(fl));
763 if (addr_len < SIN6_LEN_RFC2133)
766 if (sin6->sin6_family && sin6->sin6_family != AF_INET6)
767 return(-EAFNOSUPPORT);
769 /* port is the proto value [0..255] carried in nexthdr */
770 proto = ntohs(sin6->sin6_port);
774 else if (proto != inet->num)
780 daddr = &sin6->sin6_addr;
782 fl.fl6_flowlabel = sin6->sin6_flowinfo&IPV6_FLOWINFO_MASK;
783 if (fl.fl6_flowlabel&IPV6_FLOWLABEL_MASK) {
784 flowlabel = fl6_sock_lookup(sk, fl.fl6_flowlabel);
785 if (flowlabel == NULL)
787 daddr = &flowlabel->dst;
792 * Otherwise it will be difficult to maintain
795 if (sk->sk_state == TCP_ESTABLISHED &&
796 ipv6_addr_equal(daddr, &np->daddr))
799 if (addr_len >= sizeof(struct sockaddr_in6) &&
800 sin6->sin6_scope_id &&
801 ipv6_addr_type(daddr)&IPV6_ADDR_LINKLOCAL)
802 fl.oif = sin6->sin6_scope_id;
804 if (sk->sk_state != TCP_ESTABLISHED)
805 return -EDESTADDRREQ;
809 fl.fl6_flowlabel = np->flow_label;
812 if (ipv6_addr_any(daddr)) {
814 * unspecified destination address
815 * treated as error... is this correct ?
817 fl6_sock_release(flowlabel);
822 fl.oif = sk->sk_bound_dev_if;
824 if (msg->msg_controllen) {
826 memset(opt, 0, sizeof(struct ipv6_txoptions));
827 opt->tot_len = sizeof(struct ipv6_txoptions);
829 err = datagram_send_ctl(msg, &fl, opt, &hlimit, &tclass);
831 fl6_sock_release(flowlabel);
834 if ((fl.fl6_flowlabel&IPV6_FLOWLABEL_MASK) && !flowlabel) {
835 flowlabel = fl6_sock_lookup(sk, fl.fl6_flowlabel);
836 if (flowlabel == NULL)
839 if (!(opt->opt_nflen|opt->opt_flen))
845 opt = fl6_merge_options(&opt_space, flowlabel, opt);
846 opt = ipv6_fixup_options(&opt_space, opt);
849 err = rawv6_probe_proto_opt(&fl, msg);
853 ipv6_addr_copy(&fl.fl6_dst, daddr);
854 if (ipv6_addr_any(&fl.fl6_src) && !ipv6_addr_any(&np->saddr))
855 ipv6_addr_copy(&fl.fl6_src, &np->saddr);
857 /* merge ip6_build_xmit from ip6_output */
858 if (opt && opt->srcrt) {
859 struct rt0_hdr *rt0 = (struct rt0_hdr *) opt->srcrt;
860 ipv6_addr_copy(&final, &fl.fl6_dst);
861 ipv6_addr_copy(&fl.fl6_dst, rt0->addr);
865 if (!fl.oif && ipv6_addr_is_multicast(&fl.fl6_dst))
866 fl.oif = np->mcast_oif;
867 security_sk_classify_flow(sk, &fl);
869 err = ip6_dst_lookup(sk, &dst, &fl);
873 ipv6_addr_copy(&fl.fl6_dst, final_p);
875 if ((err = __xfrm_lookup(&dst, &fl, sk, XFRM_LOOKUP_WAIT)) < 0) {
877 err = ip6_dst_blackhole(sk, &dst, &fl);
883 if (ipv6_addr_is_multicast(&fl.fl6_dst))
884 hlimit = np->mcast_hops;
886 hlimit = np->hop_limit;
888 hlimit = dst_metric(dst, RTAX_HOPLIMIT);
890 hlimit = ipv6_get_hoplimit(dst->dev);
899 if (msg->msg_flags&MSG_CONFIRM)
904 err = rawv6_send_hdrinc(sk, msg->msg_iov, len, &fl, (struct rt6_info*)dst, msg->msg_flags);
907 err = ip6_append_data(sk, ip_generic_getfrag, msg->msg_iov,
908 len, 0, hlimit, tclass, opt, &fl, (struct rt6_info*)dst,
912 ip6_flush_pending_frames(sk);
913 else if (!(msg->msg_flags & MSG_MORE))
914 err = rawv6_push_pending_frames(sk, &fl, rp);
920 fl6_sock_release(flowlabel);
921 return err<0?err:len;
924 if (!(msg->msg_flags & MSG_PROBE) || len)
925 goto back_from_confirm;
930 static int rawv6_seticmpfilter(struct sock *sk, int level, int optname,
931 char __user *optval, int optlen)
935 if (optlen > sizeof(struct icmp6_filter))
936 optlen = sizeof(struct icmp6_filter);
937 if (copy_from_user(&raw6_sk(sk)->filter, optval, optlen))
947 static int rawv6_geticmpfilter(struct sock *sk, int level, int optname,
948 char __user *optval, int __user *optlen)
954 if (get_user(len, optlen))
958 if (len > sizeof(struct icmp6_filter))
959 len = sizeof(struct icmp6_filter);
960 if (put_user(len, optlen))
962 if (copy_to_user(optval, &raw6_sk(sk)->filter, len))
973 static int do_rawv6_setsockopt(struct sock *sk, int level, int optname,
974 char __user *optval, int optlen)
976 struct raw6_sock *rp = raw6_sk(sk);
979 if (get_user(val, (int __user *)optval))
984 /* You may get strange result with a positive odd offset;
985 RFC2292bis agrees with me. */
986 if (val > 0 && (val&1))
999 return(-ENOPROTOOPT);
1003 static int rawv6_setsockopt(struct sock *sk, int level, int optname,
1004 char __user *optval, int optlen)
1011 if (inet_sk(sk)->num != IPPROTO_ICMPV6)
1013 return rawv6_seticmpfilter(sk, level, optname, optval,
1016 if (optname == IPV6_CHECKSUM)
1019 return ipv6_setsockopt(sk, level, optname, optval,
1023 return do_rawv6_setsockopt(sk, level, optname, optval, optlen);
1026 #ifdef CONFIG_COMPAT
1027 static int compat_rawv6_setsockopt(struct sock *sk, int level, int optname,
1028 char __user *optval, int optlen)
1034 if (inet_sk(sk)->num != IPPROTO_ICMPV6)
1036 return rawv6_seticmpfilter(sk, level, optname, optval, optlen);
1038 if (optname == IPV6_CHECKSUM)
1041 return compat_ipv6_setsockopt(sk, level, optname,
1044 return do_rawv6_setsockopt(sk, level, optname, optval, optlen);
1048 static int do_rawv6_getsockopt(struct sock *sk, int level, int optname,
1049 char __user *optval, int __user *optlen)
1051 struct raw6_sock *rp = raw6_sk(sk);
1054 if (get_user(len,optlen))
1059 if (rp->checksum == 0)
1066 return -ENOPROTOOPT;
1069 len = min_t(unsigned int, sizeof(int), len);
1071 if (put_user(len, optlen))
1073 if (copy_to_user(optval,&val,len))
1078 static int rawv6_getsockopt(struct sock *sk, int level, int optname,
1079 char __user *optval, int __user *optlen)
1086 if (inet_sk(sk)->num != IPPROTO_ICMPV6)
1088 return rawv6_geticmpfilter(sk, level, optname, optval,
1091 if (optname == IPV6_CHECKSUM)
1094 return ipv6_getsockopt(sk, level, optname, optval,
1098 return do_rawv6_getsockopt(sk, level, optname, optval, optlen);
1101 #ifdef CONFIG_COMPAT
1102 static int compat_rawv6_getsockopt(struct sock *sk, int level, int optname,
1103 char __user *optval, int __user *optlen)
1109 if (inet_sk(sk)->num != IPPROTO_ICMPV6)
1111 return rawv6_geticmpfilter(sk, level, optname, optval, optlen);
1113 if (optname == IPV6_CHECKSUM)
1116 return compat_ipv6_getsockopt(sk, level, optname,
1119 return do_rawv6_getsockopt(sk, level, optname, optval, optlen);
1123 static int rawv6_ioctl(struct sock *sk, int cmd, unsigned long arg)
1128 int amount = atomic_read(&sk->sk_wmem_alloc);
1129 return put_user(amount, (int __user *)arg);
1133 struct sk_buff *skb;
1136 spin_lock_bh(&sk->sk_receive_queue.lock);
1137 skb = skb_peek(&sk->sk_receive_queue);
1139 amount = skb->tail - skb->transport_header;
1140 spin_unlock_bh(&sk->sk_receive_queue.lock);
1141 return put_user(amount, (int __user *)arg);
1145 return -ENOIOCTLCMD;
1149 static void rawv6_close(struct sock *sk, long timeout)
1151 if (inet_sk(sk)->num == IPPROTO_RAW)
1152 ip6_ra_control(sk, -1, NULL);
1154 sk_common_release(sk);
1157 static int rawv6_init_sk(struct sock *sk)
1159 struct raw6_sock *rp = raw6_sk(sk);
1161 switch (inet_sk(sk)->num) {
1162 case IPPROTO_ICMPV6:
1176 DEFINE_PROTO_INUSE(rawv6)
1178 struct proto rawv6_prot = {
1180 .owner = THIS_MODULE,
1181 .close = rawv6_close,
1182 .connect = ip6_datagram_connect,
1183 .disconnect = udp_disconnect,
1184 .ioctl = rawv6_ioctl,
1185 .init = rawv6_init_sk,
1186 .destroy = inet6_destroy_sock,
1187 .setsockopt = rawv6_setsockopt,
1188 .getsockopt = rawv6_getsockopt,
1189 .sendmsg = rawv6_sendmsg,
1190 .recvmsg = rawv6_recvmsg,
1192 .backlog_rcv = rawv6_rcv_skb,
1193 .hash = raw_v6_hash,
1194 .unhash = raw_v6_unhash,
1195 .obj_size = sizeof(struct raw6_sock),
1196 #ifdef CONFIG_COMPAT
1197 .compat_setsockopt = compat_rawv6_setsockopt,
1198 .compat_getsockopt = compat_rawv6_getsockopt,
1200 REF_PROTO_INUSE(rawv6)
1203 #ifdef CONFIG_PROC_FS
1204 static void raw6_sock_seq_show(struct seq_file *seq, struct sock *sp, int i)
1206 struct ipv6_pinfo *np = inet6_sk(sp);
1207 struct in6_addr *dest, *src;
1211 src = &np->rcv_saddr;
1213 srcp = inet_sk(sp)->num;
1215 "%4d: %08X%08X%08X%08X:%04X %08X%08X%08X%08X:%04X "
1216 "%02X %08X:%08X %02X:%08lX %08X %5d %8d %lu %d %p %d\n",
1218 src->s6_addr32[0], src->s6_addr32[1],
1219 src->s6_addr32[2], src->s6_addr32[3], srcp,
1220 dest->s6_addr32[0], dest->s6_addr32[1],
1221 dest->s6_addr32[2], dest->s6_addr32[3], destp,
1223 atomic_read(&sp->sk_wmem_alloc),
1224 atomic_read(&sp->sk_rmem_alloc),
1228 atomic_read(&sp->sk_refcnt), sp, atomic_read(&sp->sk_drops));
1231 static int raw6_seq_show(struct seq_file *seq, void *v)
1233 if (v == SEQ_START_TOKEN)
1238 "st tx_queue rx_queue tr tm->when retrnsmt"
1239 " uid timeout inode drops\n");
1241 raw6_sock_seq_show(seq, v, raw_seq_private(seq)->bucket);
1245 static const struct seq_operations raw6_seq_ops = {
1246 .start = raw_seq_start,
1247 .next = raw_seq_next,
1248 .stop = raw_seq_stop,
1249 .show = raw6_seq_show,
1252 static int raw6_seq_open(struct inode *inode, struct file *file)
1254 return raw_seq_open(file, &raw_v6_hashinfo, PF_INET6);
1257 static const struct file_operations raw6_seq_fops = {
1258 .owner = THIS_MODULE,
1259 .open = raw6_seq_open,
1261 .llseek = seq_lseek,
1262 .release = seq_release_private,
1265 int __init raw6_proc_init(void)
1267 if (!proc_net_fops_create(&init_net, "raw6", S_IRUGO, &raw6_seq_fops))
1272 void raw6_proc_exit(void)
1274 proc_net_remove(&init_net, "raw6");
1276 #endif /* CONFIG_PROC_FS */
1278 /* Same as inet6_dgram_ops, sans udp_poll. */
1279 static const struct proto_ops inet6_sockraw_ops = {
1281 .owner = THIS_MODULE,
1282 .release = inet6_release,
1284 .connect = inet_dgram_connect, /* ok */
1285 .socketpair = sock_no_socketpair, /* a do nothing */
1286 .accept = sock_no_accept, /* a do nothing */
1287 .getname = inet6_getname,
1288 .poll = datagram_poll, /* ok */
1289 .ioctl = inet6_ioctl, /* must change */
1290 .listen = sock_no_listen, /* ok */
1291 .shutdown = inet_shutdown, /* ok */
1292 .setsockopt = sock_common_setsockopt, /* ok */
1293 .getsockopt = sock_common_getsockopt, /* ok */
1294 .sendmsg = inet_sendmsg, /* ok */
1295 .recvmsg = sock_common_recvmsg, /* ok */
1296 .mmap = sock_no_mmap,
1297 .sendpage = sock_no_sendpage,
1298 #ifdef CONFIG_COMPAT
1299 .compat_setsockopt = compat_sock_common_setsockopt,
1300 .compat_getsockopt = compat_sock_common_getsockopt,
1304 static struct inet_protosw rawv6_protosw = {
1306 .protocol = IPPROTO_IP, /* wild card */
1307 .prot = &rawv6_prot,
1308 .ops = &inet6_sockraw_ops,
1309 .capability = CAP_NET_RAW,
1310 .no_check = UDP_CSUM_DEFAULT,
1311 .flags = INET_PROTOSW_REUSE,
1314 int __init rawv6_init(void)
1318 ret = inet6_register_protosw(&rawv6_protosw);
1325 void rawv6_exit(void)
1327 inet6_unregister_protosw(&rawv6_protosw);