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 /* Note: ipv6_hdr(skb) != skb->data */
361 struct ipv6hdr *ip6h = (struct ipv6hdr *)skb->data;
362 saddr = &ip6h->saddr;
363 daddr = &ip6h->daddr;
364 net = dev_net(skb->dev);
366 while ((sk = __raw_v6_lookup(net, sk, nexthdr, saddr, daddr,
368 rawv6_err(sk, skb, NULL, type, code,
373 read_unlock(&raw_v6_hashinfo.lock);
376 static inline int rawv6_rcv_skb(struct sock * sk, struct sk_buff * skb)
378 if ((raw6_sk(sk)->checksum || sk->sk_filter) &&
379 skb_checksum_complete(skb)) {
380 atomic_inc(&sk->sk_drops);
385 /* Charge it to the socket. */
386 if (sock_queue_rcv_skb(sk,skb)<0) {
387 atomic_inc(&sk->sk_drops);
396 * This is next to useless...
397 * if we demultiplex in network layer we don't need the extra call
398 * just to queue the skb...
399 * maybe we could have the network decide upon a hint if it
400 * should call raw_rcv for demultiplexing
402 int rawv6_rcv(struct sock *sk, struct sk_buff *skb)
404 struct inet_sock *inet = inet_sk(sk);
405 struct raw6_sock *rp = raw6_sk(sk);
407 if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb)) {
408 atomic_inc(&sk->sk_drops);
414 skb->ip_summed = CHECKSUM_UNNECESSARY;
416 if (skb->ip_summed == CHECKSUM_COMPLETE) {
417 skb_postpull_rcsum(skb, skb_network_header(skb),
418 skb_network_header_len(skb));
419 if (!csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
420 &ipv6_hdr(skb)->daddr,
421 skb->len, inet->num, skb->csum))
422 skb->ip_summed = CHECKSUM_UNNECESSARY;
424 if (!skb_csum_unnecessary(skb))
425 skb->csum = ~csum_unfold(csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
426 &ipv6_hdr(skb)->daddr,
431 if (skb_checksum_complete(skb)) {
432 atomic_inc(&sk->sk_drops);
438 rawv6_rcv_skb(sk, skb);
444 * This should be easy, if there is something there
445 * we return it, otherwise we block.
448 static int rawv6_recvmsg(struct kiocb *iocb, struct sock *sk,
449 struct msghdr *msg, size_t len,
450 int noblock, int flags, int *addr_len)
452 struct ipv6_pinfo *np = inet6_sk(sk);
453 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)msg->msg_name;
462 *addr_len=sizeof(*sin6);
464 if (flags & MSG_ERRQUEUE)
465 return ipv6_recv_error(sk, msg, len);
467 skb = skb_recv_datagram(sk, flags, noblock, &err);
474 msg->msg_flags |= MSG_TRUNC;
477 if (skb_csum_unnecessary(skb)) {
478 err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
479 } else if (msg->msg_flags&MSG_TRUNC) {
480 if (__skb_checksum_complete(skb))
482 err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
484 err = skb_copy_and_csum_datagram_iovec(skb, 0, msg->msg_iov);
491 /* Copy the address. */
493 sin6->sin6_family = AF_INET6;
495 ipv6_addr_copy(&sin6->sin6_addr, &ipv6_hdr(skb)->saddr);
496 sin6->sin6_flowinfo = 0;
497 sin6->sin6_scope_id = 0;
498 if (ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL)
499 sin6->sin6_scope_id = IP6CB(skb)->iif;
502 sock_recv_timestamp(msg, sk, skb);
505 datagram_recv_ctl(sk, msg, skb);
508 if (flags & MSG_TRUNC)
512 skb_free_datagram(sk, skb);
517 skb_kill_datagram(sk, skb, flags);
519 /* Error for blocking case is chosen to masquerade
520 as some normal condition.
522 err = (flags&MSG_DONTWAIT) ? -EAGAIN : -EHOSTUNREACH;
523 atomic_inc(&sk->sk_drops);
527 static int rawv6_push_pending_frames(struct sock *sk, struct flowi *fl,
528 struct raw6_sock *rp)
541 if ((skb = skb_peek(&sk->sk_write_queue)) == NULL)
545 total_len = inet_sk(sk)->cork.length - (skb_network_header(skb) -
547 if (offset >= total_len - 1) {
549 ip6_flush_pending_frames(sk);
553 /* should be check HW csum miyazawa */
554 if (skb_queue_len(&sk->sk_write_queue) == 1) {
556 * Only one fragment on the socket.
558 tmp_csum = skb->csum;
560 struct sk_buff *csum_skb = NULL;
563 skb_queue_walk(&sk->sk_write_queue, skb) {
564 tmp_csum = csum_add(tmp_csum, skb->csum);
569 len = skb->len - skb_transport_offset(skb);
581 offset += skb_transport_offset(skb);
582 if (skb_copy_bits(skb, offset, &csum, 2))
585 /* in case cksum was not initialized */
587 tmp_csum = csum_sub(tmp_csum, csum_unfold(csum));
589 csum = csum_ipv6_magic(&fl->fl6_src,
591 total_len, fl->proto, tmp_csum);
593 if (csum == 0 && fl->proto == IPPROTO_UDP)
594 csum = CSUM_MANGLED_0;
596 if (skb_store_bits(skb, offset, &csum, 2))
600 err = ip6_push_pending_frames(sk);
605 static int rawv6_send_hdrinc(struct sock *sk, void *from, int length,
606 struct flowi *fl, struct rt6_info *rt,
609 struct ipv6_pinfo *np = inet6_sk(sk);
615 if (length > rt->u.dst.dev->mtu) {
616 ipv6_local_error(sk, EMSGSIZE, fl, rt->u.dst.dev->mtu);
622 hh_len = LL_RESERVED_SPACE(rt->u.dst.dev);
624 skb = sock_alloc_send_skb(sk, length+hh_len+15,
625 flags&MSG_DONTWAIT, &err);
628 skb_reserve(skb, hh_len);
630 skb->priority = sk->sk_priority;
631 skb->mark = sk->sk_mark;
632 skb->dst = dst_clone(&rt->u.dst);
634 skb_put(skb, length);
635 skb_reset_network_header(skb);
638 skb->ip_summed = CHECKSUM_NONE;
640 skb->transport_header = skb->network_header;
641 err = memcpy_fromiovecend((void *)iph, from, 0, length);
645 IP6_INC_STATS(rt->rt6i_idev, IPSTATS_MIB_OUTREQUESTS);
646 err = NF_HOOK(PF_INET6, NF_INET_LOCAL_OUT, skb, NULL, rt->u.dst.dev,
649 err = np->recverr ? net_xmit_errno(err) : 0;
659 IP6_INC_STATS(rt->rt6i_idev, IPSTATS_MIB_OUTDISCARDS);
663 static int rawv6_probe_proto_opt(struct flowi *fl, struct msghdr *msg)
666 u8 __user *type = NULL;
667 u8 __user *code = NULL;
675 for (i = 0; i < msg->msg_iovlen; i++) {
676 iov = &msg->msg_iov[i];
682 /* check if one-byte field is readable or not. */
683 if (iov->iov_base && iov->iov_len < 1)
687 type = iov->iov_base;
688 /* check if code field is readable or not. */
689 if (iov->iov_len > 1)
692 code = iov->iov_base;
695 if (get_user(fl->fl_icmp_type, type) ||
696 get_user(fl->fl_icmp_code, code))
702 if (iov->iov_base && iov->iov_len < 1)
704 /* check if type field is readable or not. */
705 if (iov->iov_len > 2 - len) {
706 u8 __user *p = iov->iov_base;
707 if (get_user(fl->fl_mh_type, &p[2 - len]))
724 static int rawv6_sendmsg(struct kiocb *iocb, struct sock *sk,
725 struct msghdr *msg, size_t len)
727 struct ipv6_txoptions opt_space;
728 struct sockaddr_in6 * sin6 = (struct sockaddr_in6 *) msg->msg_name;
729 struct in6_addr *daddr, *final_p = NULL, final;
730 struct inet_sock *inet = inet_sk(sk);
731 struct ipv6_pinfo *np = inet6_sk(sk);
732 struct raw6_sock *rp = raw6_sk(sk);
733 struct ipv6_txoptions *opt = NULL;
734 struct ip6_flowlabel *flowlabel = NULL;
735 struct dst_entry *dst = NULL;
737 int addr_len = msg->msg_namelen;
743 /* Rough check on arithmetic overflow,
744 better check is made in ip6_append_data().
749 /* Mirror BSD error message compatibility */
750 if (msg->msg_flags & MSG_OOB)
754 * Get and verify the address.
756 memset(&fl, 0, sizeof(fl));
758 fl.mark = sk->sk_mark;
761 if (addr_len < SIN6_LEN_RFC2133)
764 if (sin6->sin6_family && sin6->sin6_family != AF_INET6)
765 return(-EAFNOSUPPORT);
767 /* port is the proto value [0..255] carried in nexthdr */
768 proto = ntohs(sin6->sin6_port);
772 else if (proto != inet->num)
778 daddr = &sin6->sin6_addr;
780 fl.fl6_flowlabel = sin6->sin6_flowinfo&IPV6_FLOWINFO_MASK;
781 if (fl.fl6_flowlabel&IPV6_FLOWLABEL_MASK) {
782 flowlabel = fl6_sock_lookup(sk, fl.fl6_flowlabel);
783 if (flowlabel == NULL)
785 daddr = &flowlabel->dst;
790 * Otherwise it will be difficult to maintain
793 if (sk->sk_state == TCP_ESTABLISHED &&
794 ipv6_addr_equal(daddr, &np->daddr))
797 if (addr_len >= sizeof(struct sockaddr_in6) &&
798 sin6->sin6_scope_id &&
799 ipv6_addr_type(daddr)&IPV6_ADDR_LINKLOCAL)
800 fl.oif = sin6->sin6_scope_id;
802 if (sk->sk_state != TCP_ESTABLISHED)
803 return -EDESTADDRREQ;
807 fl.fl6_flowlabel = np->flow_label;
811 fl.oif = sk->sk_bound_dev_if;
813 if (msg->msg_controllen) {
815 memset(opt, 0, sizeof(struct ipv6_txoptions));
816 opt->tot_len = sizeof(struct ipv6_txoptions);
818 err = datagram_send_ctl(msg, &fl, opt, &hlimit, &tclass);
820 fl6_sock_release(flowlabel);
823 if ((fl.fl6_flowlabel&IPV6_FLOWLABEL_MASK) && !flowlabel) {
824 flowlabel = fl6_sock_lookup(sk, fl.fl6_flowlabel);
825 if (flowlabel == NULL)
828 if (!(opt->opt_nflen|opt->opt_flen))
834 opt = fl6_merge_options(&opt_space, flowlabel, opt);
835 opt = ipv6_fixup_options(&opt_space, opt);
838 err = rawv6_probe_proto_opt(&fl, msg);
842 if (!ipv6_addr_any(daddr))
843 ipv6_addr_copy(&fl.fl6_dst, daddr);
845 fl.fl6_dst.s6_addr[15] = 0x1; /* :: means loopback (BSD'ism) */
846 if (ipv6_addr_any(&fl.fl6_src) && !ipv6_addr_any(&np->saddr))
847 ipv6_addr_copy(&fl.fl6_src, &np->saddr);
849 /* merge ip6_build_xmit from ip6_output */
850 if (opt && opt->srcrt) {
851 struct rt0_hdr *rt0 = (struct rt0_hdr *) opt->srcrt;
852 ipv6_addr_copy(&final, &fl.fl6_dst);
853 ipv6_addr_copy(&fl.fl6_dst, rt0->addr);
857 if (!fl.oif && ipv6_addr_is_multicast(&fl.fl6_dst))
858 fl.oif = np->mcast_oif;
859 security_sk_classify_flow(sk, &fl);
861 err = ip6_dst_lookup(sk, &dst, &fl);
865 ipv6_addr_copy(&fl.fl6_dst, final_p);
867 if ((err = __xfrm_lookup(&dst, &fl, sk, XFRM_LOOKUP_WAIT)) < 0) {
869 err = ip6_dst_blackhole(sk, &dst, &fl);
875 if (ipv6_addr_is_multicast(&fl.fl6_dst))
876 hlimit = np->mcast_hops;
878 hlimit = np->hop_limit;
880 hlimit = ip6_dst_hoplimit(dst);
889 if (msg->msg_flags&MSG_CONFIRM)
894 err = rawv6_send_hdrinc(sk, msg->msg_iov, len, &fl, (struct rt6_info*)dst, msg->msg_flags);
897 err = ip6_append_data(sk, ip_generic_getfrag, msg->msg_iov,
898 len, 0, hlimit, tclass, opt, &fl, (struct rt6_info*)dst,
902 ip6_flush_pending_frames(sk);
903 else if (!(msg->msg_flags & MSG_MORE))
904 err = rawv6_push_pending_frames(sk, &fl, rp);
910 fl6_sock_release(flowlabel);
911 return err<0?err:len;
914 if (!(msg->msg_flags & MSG_PROBE) || len)
915 goto back_from_confirm;
920 static int rawv6_seticmpfilter(struct sock *sk, int level, int optname,
921 char __user *optval, int optlen)
925 if (optlen > sizeof(struct icmp6_filter))
926 optlen = sizeof(struct icmp6_filter);
927 if (copy_from_user(&raw6_sk(sk)->filter, optval, optlen))
937 static int rawv6_geticmpfilter(struct sock *sk, int level, int optname,
938 char __user *optval, int __user *optlen)
944 if (get_user(len, optlen))
948 if (len > sizeof(struct icmp6_filter))
949 len = sizeof(struct icmp6_filter);
950 if (put_user(len, optlen))
952 if (copy_to_user(optval, &raw6_sk(sk)->filter, len))
963 static int do_rawv6_setsockopt(struct sock *sk, int level, int optname,
964 char __user *optval, int optlen)
966 struct raw6_sock *rp = raw6_sk(sk);
969 if (get_user(val, (int __user *)optval))
974 /* You may get strange result with a positive odd offset;
975 RFC2292bis agrees with me. */
976 if (val > 0 && (val&1))
989 return(-ENOPROTOOPT);
993 static int rawv6_setsockopt(struct sock *sk, int level, int optname,
994 char __user *optval, int optlen)
1001 if (inet_sk(sk)->num != IPPROTO_ICMPV6)
1003 return rawv6_seticmpfilter(sk, level, optname, optval,
1006 if (optname == IPV6_CHECKSUM)
1009 return ipv6_setsockopt(sk, level, optname, optval,
1013 return do_rawv6_setsockopt(sk, level, optname, optval, optlen);
1016 #ifdef CONFIG_COMPAT
1017 static int compat_rawv6_setsockopt(struct sock *sk, int level, int optname,
1018 char __user *optval, int optlen)
1024 if (inet_sk(sk)->num != IPPROTO_ICMPV6)
1026 return rawv6_seticmpfilter(sk, level, optname, optval, optlen);
1028 if (optname == IPV6_CHECKSUM)
1031 return compat_ipv6_setsockopt(sk, level, optname,
1034 return do_rawv6_setsockopt(sk, level, optname, optval, optlen);
1038 static int do_rawv6_getsockopt(struct sock *sk, int level, int optname,
1039 char __user *optval, int __user *optlen)
1041 struct raw6_sock *rp = raw6_sk(sk);
1044 if (get_user(len,optlen))
1049 if (rp->checksum == 0)
1056 return -ENOPROTOOPT;
1059 len = min_t(unsigned int, sizeof(int), len);
1061 if (put_user(len, optlen))
1063 if (copy_to_user(optval,&val,len))
1068 static int rawv6_getsockopt(struct sock *sk, int level, int optname,
1069 char __user *optval, int __user *optlen)
1076 if (inet_sk(sk)->num != IPPROTO_ICMPV6)
1078 return rawv6_geticmpfilter(sk, level, optname, optval,
1081 if (optname == IPV6_CHECKSUM)
1084 return ipv6_getsockopt(sk, level, optname, optval,
1088 return do_rawv6_getsockopt(sk, level, optname, optval, optlen);
1091 #ifdef CONFIG_COMPAT
1092 static int compat_rawv6_getsockopt(struct sock *sk, int level, int optname,
1093 char __user *optval, int __user *optlen)
1099 if (inet_sk(sk)->num != IPPROTO_ICMPV6)
1101 return rawv6_geticmpfilter(sk, level, optname, optval, optlen);
1103 if (optname == IPV6_CHECKSUM)
1106 return compat_ipv6_getsockopt(sk, level, optname,
1109 return do_rawv6_getsockopt(sk, level, optname, optval, optlen);
1113 static int rawv6_ioctl(struct sock *sk, int cmd, unsigned long arg)
1118 int amount = atomic_read(&sk->sk_wmem_alloc);
1119 return put_user(amount, (int __user *)arg);
1123 struct sk_buff *skb;
1126 spin_lock_bh(&sk->sk_receive_queue.lock);
1127 skb = skb_peek(&sk->sk_receive_queue);
1129 amount = skb->tail - skb->transport_header;
1130 spin_unlock_bh(&sk->sk_receive_queue.lock);
1131 return put_user(amount, (int __user *)arg);
1135 #ifdef CONFIG_IPV6_MROUTE
1136 return ip6mr_ioctl(sk, cmd, (void __user *)arg);
1138 return -ENOIOCTLCMD;
1143 static void rawv6_close(struct sock *sk, long timeout)
1145 if (inet_sk(sk)->num == IPPROTO_RAW)
1146 ip6_ra_control(sk, -1, NULL);
1148 sk_common_release(sk);
1151 static int rawv6_init_sk(struct sock *sk)
1153 struct raw6_sock *rp = raw6_sk(sk);
1155 switch (inet_sk(sk)->num) {
1156 case IPPROTO_ICMPV6:
1170 struct proto rawv6_prot = {
1172 .owner = THIS_MODULE,
1173 .close = rawv6_close,
1174 .connect = ip6_datagram_connect,
1175 .disconnect = udp_disconnect,
1176 .ioctl = rawv6_ioctl,
1177 .init = rawv6_init_sk,
1178 .destroy = inet6_destroy_sock,
1179 .setsockopt = rawv6_setsockopt,
1180 .getsockopt = rawv6_getsockopt,
1181 .sendmsg = rawv6_sendmsg,
1182 .recvmsg = rawv6_recvmsg,
1184 .backlog_rcv = rawv6_rcv_skb,
1185 .hash = raw_hash_sk,
1186 .unhash = raw_unhash_sk,
1187 .obj_size = sizeof(struct raw6_sock),
1188 .h.raw_hash = &raw_v6_hashinfo,
1189 #ifdef CONFIG_COMPAT
1190 .compat_setsockopt = compat_rawv6_setsockopt,
1191 .compat_getsockopt = compat_rawv6_getsockopt,
1195 #ifdef CONFIG_PROC_FS
1196 static void raw6_sock_seq_show(struct seq_file *seq, struct sock *sp, int i)
1198 struct ipv6_pinfo *np = inet6_sk(sp);
1199 struct in6_addr *dest, *src;
1203 src = &np->rcv_saddr;
1205 srcp = inet_sk(sp)->num;
1207 "%4d: %08X%08X%08X%08X:%04X %08X%08X%08X%08X:%04X "
1208 "%02X %08X:%08X %02X:%08lX %08X %5d %8d %lu %d %p %d\n",
1210 src->s6_addr32[0], src->s6_addr32[1],
1211 src->s6_addr32[2], src->s6_addr32[3], srcp,
1212 dest->s6_addr32[0], dest->s6_addr32[1],
1213 dest->s6_addr32[2], dest->s6_addr32[3], destp,
1215 atomic_read(&sp->sk_wmem_alloc),
1216 atomic_read(&sp->sk_rmem_alloc),
1220 atomic_read(&sp->sk_refcnt), sp, atomic_read(&sp->sk_drops));
1223 static int raw6_seq_show(struct seq_file *seq, void *v)
1225 if (v == SEQ_START_TOKEN)
1230 "st tx_queue rx_queue tr tm->when retrnsmt"
1231 " uid timeout inode drops\n");
1233 raw6_sock_seq_show(seq, v, raw_seq_private(seq)->bucket);
1237 static const struct seq_operations raw6_seq_ops = {
1238 .start = raw_seq_start,
1239 .next = raw_seq_next,
1240 .stop = raw_seq_stop,
1241 .show = raw6_seq_show,
1244 static int raw6_seq_open(struct inode *inode, struct file *file)
1246 return raw_seq_open(inode, file, &raw_v6_hashinfo, &raw6_seq_ops);
1249 static const struct file_operations raw6_seq_fops = {
1250 .owner = THIS_MODULE,
1251 .open = raw6_seq_open,
1253 .llseek = seq_lseek,
1254 .release = seq_release_net,
1257 static int raw6_init_net(struct net *net)
1259 if (!proc_net_fops_create(net, "raw6", S_IRUGO, &raw6_seq_fops))
1265 static void raw6_exit_net(struct net *net)
1267 proc_net_remove(net, "raw6");
1270 static struct pernet_operations raw6_net_ops = {
1271 .init = raw6_init_net,
1272 .exit = raw6_exit_net,
1275 int __init raw6_proc_init(void)
1277 return register_pernet_subsys(&raw6_net_ops);
1280 void raw6_proc_exit(void)
1282 unregister_pernet_subsys(&raw6_net_ops);
1284 #endif /* CONFIG_PROC_FS */
1286 /* Same as inet6_dgram_ops, sans udp_poll. */
1287 static const struct proto_ops inet6_sockraw_ops = {
1289 .owner = THIS_MODULE,
1290 .release = inet6_release,
1292 .connect = inet_dgram_connect, /* ok */
1293 .socketpair = sock_no_socketpair, /* a do nothing */
1294 .accept = sock_no_accept, /* a do nothing */
1295 .getname = inet6_getname,
1296 .poll = datagram_poll, /* ok */
1297 .ioctl = inet6_ioctl, /* must change */
1298 .listen = sock_no_listen, /* ok */
1299 .shutdown = inet_shutdown, /* ok */
1300 .setsockopt = sock_common_setsockopt, /* ok */
1301 .getsockopt = sock_common_getsockopt, /* ok */
1302 .sendmsg = inet_sendmsg, /* ok */
1303 .recvmsg = sock_common_recvmsg, /* ok */
1304 .mmap = sock_no_mmap,
1305 .sendpage = sock_no_sendpage,
1306 #ifdef CONFIG_COMPAT
1307 .compat_setsockopt = compat_sock_common_setsockopt,
1308 .compat_getsockopt = compat_sock_common_getsockopt,
1312 static struct inet_protosw rawv6_protosw = {
1314 .protocol = IPPROTO_IP, /* wild card */
1315 .prot = &rawv6_prot,
1316 .ops = &inet6_sockraw_ops,
1317 .capability = CAP_NET_RAW,
1318 .no_check = UDP_CSUM_DEFAULT,
1319 .flags = INET_PROTOSW_REUSE,
1322 int __init rawv6_init(void)
1326 ret = inet6_register_protosw(&rawv6_protosw);
1333 void rawv6_exit(void)
1335 inet6_unregister_protosw(&rawv6_protosw);