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(raw_v6_hashinfo.lock),
68 static struct sock *__raw_v6_lookup(struct net *net, struct sock *sk,
69 unsigned short num, struct in6_addr *loc_addr,
70 struct in6_addr *rmt_addr, int dif)
72 struct hlist_node *node;
73 int is_multicast = ipv6_addr_is_multicast(loc_addr);
75 sk_for_each_from(sk, node)
76 if (inet_sk(sk)->num == num) {
77 struct ipv6_pinfo *np = inet6_sk(sk);
79 if (!net_eq(sock_net(sk), net))
82 if (!ipv6_addr_any(&np->daddr) &&
83 !ipv6_addr_equal(&np->daddr, rmt_addr))
86 if (sk->sk_bound_dev_if && sk->sk_bound_dev_if != dif)
89 if (!ipv6_addr_any(&np->rcv_saddr)) {
90 if (ipv6_addr_equal(&np->rcv_saddr, loc_addr))
93 inet6_mc_check(sk, loc_addr, rmt_addr))
108 static __inline__ int icmpv6_filter(struct sock *sk, struct sk_buff *skb)
110 struct icmp6hdr *icmph;
111 struct raw6_sock *rp = raw6_sk(sk);
113 if (pskb_may_pull(skb, sizeof(struct icmp6hdr))) {
114 __u32 *data = &rp->filter.data[0];
117 icmph = (struct icmp6hdr *) skb->data;
118 bit_nr = icmph->icmp6_type;
120 return (data[bit_nr >> 5] & (1 << (bit_nr & 31))) != 0;
125 #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
126 static int (*mh_filter)(struct sock *sock, struct sk_buff *skb);
128 int rawv6_mh_filter_register(int (*filter)(struct sock *sock,
129 struct sk_buff *skb))
131 rcu_assign_pointer(mh_filter, filter);
134 EXPORT_SYMBOL(rawv6_mh_filter_register);
136 int rawv6_mh_filter_unregister(int (*filter)(struct sock *sock,
137 struct sk_buff *skb))
139 rcu_assign_pointer(mh_filter, NULL);
143 EXPORT_SYMBOL(rawv6_mh_filter_unregister);
148 * demultiplex raw sockets.
149 * (should consider queueing the skb in the sock receive_queue
150 * without calling rawv6.c)
152 * Caller owns SKB so we must make clones.
154 static int ipv6_raw_deliver(struct sk_buff *skb, int nexthdr)
156 struct in6_addr *saddr;
157 struct in6_addr *daddr;
163 saddr = &ipv6_hdr(skb)->saddr;
166 hash = nexthdr & (MAX_INET_PROTOS - 1);
168 read_lock(&raw_v6_hashinfo.lock);
169 sk = sk_head(&raw_v6_hashinfo.ht[hash]);
174 net = dev_net(skb->dev);
175 sk = __raw_v6_lookup(net, sk, nexthdr, daddr, saddr, IP6CB(skb)->iif);
183 filtered = icmpv6_filter(sk, skb);
186 #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
189 /* XXX: To validate MH only once for each packet,
190 * this is placed here. It should be after checking
191 * xfrm policy, however it doesn't. The checking xfrm
192 * policy is placed in rawv6_rcv() because it is
193 * required for each socket.
195 int (*filter)(struct sock *sock, struct sk_buff *skb);
197 filter = rcu_dereference(mh_filter);
198 filtered = filter ? filter(sk, skb) : 0;
210 struct sk_buff *clone = skb_clone(skb, GFP_ATOMIC);
212 /* Not releasing hash table! */
215 rawv6_rcv(sk, clone);
218 sk = __raw_v6_lookup(net, sk_next(sk), nexthdr, daddr, saddr,
222 read_unlock(&raw_v6_hashinfo.lock);
226 int raw6_local_deliver(struct sk_buff *skb, int nexthdr)
230 raw_sk = sk_head(&raw_v6_hashinfo.ht[nexthdr & (MAX_INET_PROTOS - 1)]);
231 if (raw_sk && !ipv6_raw_deliver(skb, nexthdr))
234 return raw_sk != NULL;
237 /* This cleans up af_inet6 a bit. -DaveM */
238 static int rawv6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
240 struct inet_sock *inet = inet_sk(sk);
241 struct ipv6_pinfo *np = inet6_sk(sk);
242 struct sockaddr_in6 *addr = (struct sockaddr_in6 *) uaddr;
247 if (addr_len < SIN6_LEN_RFC2133)
249 addr_type = ipv6_addr_type(&addr->sin6_addr);
251 /* Raw sockets are IPv6 only */
252 if (addr_type == IPV6_ADDR_MAPPED)
253 return(-EADDRNOTAVAIL);
258 if (sk->sk_state != TCP_CLOSE)
261 /* Check if the address belongs to the host. */
262 if (addr_type != IPV6_ADDR_ANY) {
263 struct net_device *dev = NULL;
265 if (addr_type & IPV6_ADDR_LINKLOCAL) {
266 if (addr_len >= sizeof(struct sockaddr_in6) &&
267 addr->sin6_scope_id) {
268 /* Override any existing binding, if another
269 * one is supplied by user.
271 sk->sk_bound_dev_if = addr->sin6_scope_id;
274 /* Binding to link-local address requires an interface */
275 if (!sk->sk_bound_dev_if)
278 dev = dev_get_by_index(sock_net(sk), sk->sk_bound_dev_if);
285 /* ipv4 addr of the socket is invalid. Only the
286 * unspecified and mapped address have a v4 equivalent.
288 v4addr = LOOPBACK4_IPV6;
289 if (!(addr_type & IPV6_ADDR_MULTICAST)) {
290 err = -EADDRNOTAVAIL;
291 if (!ipv6_chk_addr(sock_net(sk), &addr->sin6_addr,
302 inet->rcv_saddr = inet->saddr = v4addr;
303 ipv6_addr_copy(&np->rcv_saddr, &addr->sin6_addr);
304 if (!(addr_type & IPV6_ADDR_MULTICAST))
305 ipv6_addr_copy(&np->saddr, &addr->sin6_addr);
312 static void rawv6_err(struct sock *sk, struct sk_buff *skb,
313 struct inet6_skb_parm *opt,
314 int type, int code, int offset, __be32 info)
316 struct inet_sock *inet = inet_sk(sk);
317 struct ipv6_pinfo *np = inet6_sk(sk);
321 /* Report error on raw socket, if:
322 1. User requested recverr.
323 2. Socket is connected (otherwise the error indication
324 is useless without recverr and error is hard.
326 if (!np->recverr && sk->sk_state != TCP_ESTABLISHED)
329 harderr = icmpv6_err_convert(type, code, &err);
330 if (type == ICMPV6_PKT_TOOBIG)
331 harderr = (np->pmtudisc == IPV6_PMTUDISC_DO);
334 u8 *payload = skb->data;
337 ipv6_icmp_error(sk, skb, err, 0, ntohl(info), payload);
340 if (np->recverr || harderr) {
342 sk->sk_error_report(sk);
346 void raw6_icmp_error(struct sk_buff *skb, int nexthdr,
347 int type, int code, int inner_offset, __be32 info)
351 struct in6_addr *saddr, *daddr;
354 hash = nexthdr & (RAW_HTABLE_SIZE - 1);
356 read_lock(&raw_v6_hashinfo.lock);
357 sk = sk_head(&raw_v6_hashinfo.ht[hash]);
359 saddr = &ipv6_hdr(skb)->saddr;
360 daddr = &ipv6_hdr(skb)->daddr;
361 net = dev_net(skb->dev);
363 while ((sk = __raw_v6_lookup(net, sk, nexthdr, saddr, daddr,
365 rawv6_err(sk, skb, NULL, type, code,
370 read_unlock(&raw_v6_hashinfo.lock);
373 static inline int rawv6_rcv_skb(struct sock * sk, struct sk_buff * skb)
375 if ((raw6_sk(sk)->checksum || sk->sk_filter) &&
376 skb_checksum_complete(skb)) {
377 atomic_inc(&sk->sk_drops);
382 /* Charge it to the socket. */
383 if (sock_queue_rcv_skb(sk,skb)<0) {
384 atomic_inc(&sk->sk_drops);
393 * This is next to useless...
394 * if we demultiplex in network layer we don't need the extra call
395 * just to queue the skb...
396 * maybe we could have the network decide upon a hint if it
397 * should call raw_rcv for demultiplexing
399 int rawv6_rcv(struct sock *sk, struct sk_buff *skb)
401 struct inet_sock *inet = inet_sk(sk);
402 struct raw6_sock *rp = raw6_sk(sk);
404 if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb)) {
405 atomic_inc(&sk->sk_drops);
411 skb->ip_summed = CHECKSUM_UNNECESSARY;
413 if (skb->ip_summed == CHECKSUM_COMPLETE) {
414 skb_postpull_rcsum(skb, skb_network_header(skb),
415 skb_network_header_len(skb));
416 if (!csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
417 &ipv6_hdr(skb)->daddr,
418 skb->len, inet->num, skb->csum))
419 skb->ip_summed = CHECKSUM_UNNECESSARY;
421 if (!skb_csum_unnecessary(skb))
422 skb->csum = ~csum_unfold(csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
423 &ipv6_hdr(skb)->daddr,
428 if (skb_checksum_complete(skb)) {
429 atomic_inc(&sk->sk_drops);
435 rawv6_rcv_skb(sk, skb);
441 * This should be easy, if there is something there
442 * we return it, otherwise we block.
445 static int rawv6_recvmsg(struct kiocb *iocb, struct sock *sk,
446 struct msghdr *msg, size_t len,
447 int noblock, int flags, int *addr_len)
449 struct ipv6_pinfo *np = inet6_sk(sk);
450 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)msg->msg_name;
459 *addr_len=sizeof(*sin6);
461 if (flags & MSG_ERRQUEUE)
462 return ipv6_recv_error(sk, msg, len);
464 skb = skb_recv_datagram(sk, flags, noblock, &err);
471 msg->msg_flags |= MSG_TRUNC;
474 if (skb_csum_unnecessary(skb)) {
475 err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
476 } else if (msg->msg_flags&MSG_TRUNC) {
477 if (__skb_checksum_complete(skb))
479 err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
481 err = skb_copy_and_csum_datagram_iovec(skb, 0, msg->msg_iov);
488 /* Copy the address. */
490 sin6->sin6_family = AF_INET6;
492 ipv6_addr_copy(&sin6->sin6_addr, &ipv6_hdr(skb)->saddr);
493 sin6->sin6_flowinfo = 0;
494 sin6->sin6_scope_id = 0;
495 if (ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL)
496 sin6->sin6_scope_id = IP6CB(skb)->iif;
499 sock_recv_timestamp(msg, sk, skb);
502 datagram_recv_ctl(sk, msg, skb);
505 if (flags & MSG_TRUNC)
509 skb_free_datagram(sk, skb);
514 skb_kill_datagram(sk, skb, flags);
516 /* Error for blocking case is chosen to masquerade
517 as some normal condition.
519 err = (flags&MSG_DONTWAIT) ? -EAGAIN : -EHOSTUNREACH;
520 atomic_inc(&sk->sk_drops);
524 static int rawv6_push_pending_frames(struct sock *sk, struct flowi *fl,
525 struct raw6_sock *rp)
538 if ((skb = skb_peek(&sk->sk_write_queue)) == NULL)
542 total_len = inet_sk(sk)->cork.length - (skb_network_header(skb) -
544 if (offset >= total_len - 1) {
546 ip6_flush_pending_frames(sk);
550 /* should be check HW csum miyazawa */
551 if (skb_queue_len(&sk->sk_write_queue) == 1) {
553 * Only one fragment on the socket.
555 tmp_csum = skb->csum;
557 struct sk_buff *csum_skb = NULL;
560 skb_queue_walk(&sk->sk_write_queue, skb) {
561 tmp_csum = csum_add(tmp_csum, skb->csum);
566 len = skb->len - skb_transport_offset(skb);
578 offset += skb_transport_offset(skb);
579 if (skb_copy_bits(skb, offset, &csum, 2))
582 /* in case cksum was not initialized */
584 tmp_csum = csum_sub(tmp_csum, csum_unfold(csum));
586 csum = csum_ipv6_magic(&fl->fl6_src,
588 total_len, fl->proto, tmp_csum);
590 if (csum == 0 && fl->proto == IPPROTO_UDP)
591 csum = CSUM_MANGLED_0;
593 if (skb_store_bits(skb, offset, &csum, 2))
597 err = ip6_push_pending_frames(sk);
602 static int rawv6_send_hdrinc(struct sock *sk, void *from, int length,
603 struct flowi *fl, struct rt6_info *rt,
606 struct ipv6_pinfo *np = inet6_sk(sk);
612 if (length > rt->u.dst.dev->mtu) {
613 ipv6_local_error(sk, EMSGSIZE, fl, rt->u.dst.dev->mtu);
619 hh_len = LL_RESERVED_SPACE(rt->u.dst.dev);
621 skb = sock_alloc_send_skb(sk, length+hh_len+15,
622 flags&MSG_DONTWAIT, &err);
625 skb_reserve(skb, hh_len);
627 skb->priority = sk->sk_priority;
628 skb->mark = sk->sk_mark;
629 skb->dst = dst_clone(&rt->u.dst);
631 skb_put(skb, length);
632 skb_reset_network_header(skb);
635 skb->ip_summed = CHECKSUM_NONE;
637 skb->transport_header = skb->network_header;
638 err = memcpy_fromiovecend((void *)iph, from, 0, length);
642 IP6_INC_STATS(rt->rt6i_idev, IPSTATS_MIB_OUTREQUESTS);
643 err = NF_HOOK(PF_INET6, NF_INET_LOCAL_OUT, skb, NULL, rt->u.dst.dev,
646 err = np->recverr ? net_xmit_errno(err) : 0;
656 IP6_INC_STATS(rt->rt6i_idev, IPSTATS_MIB_OUTDISCARDS);
660 static int rawv6_probe_proto_opt(struct flowi *fl, struct msghdr *msg)
663 u8 __user *type = NULL;
664 u8 __user *code = NULL;
672 for (i = 0; i < msg->msg_iovlen; i++) {
673 iov = &msg->msg_iov[i];
679 /* check if one-byte field is readable or not. */
680 if (iov->iov_base && iov->iov_len < 1)
684 type = iov->iov_base;
685 /* check if code field is readable or not. */
686 if (iov->iov_len > 1)
689 code = iov->iov_base;
692 if (get_user(fl->fl_icmp_type, type) ||
693 get_user(fl->fl_icmp_code, code))
699 if (iov->iov_base && iov->iov_len < 1)
701 /* check if type field is readable or not. */
702 if (iov->iov_len > 2 - len) {
703 u8 __user *p = iov->iov_base;
704 if (get_user(fl->fl_mh_type, &p[2 - len]))
721 static int rawv6_sendmsg(struct kiocb *iocb, struct sock *sk,
722 struct msghdr *msg, size_t len)
724 struct ipv6_txoptions opt_space;
725 struct sockaddr_in6 * sin6 = (struct sockaddr_in6 *) msg->msg_name;
726 struct in6_addr *daddr, *final_p = NULL, final;
727 struct inet_sock *inet = inet_sk(sk);
728 struct ipv6_pinfo *np = inet6_sk(sk);
729 struct raw6_sock *rp = raw6_sk(sk);
730 struct ipv6_txoptions *opt = NULL;
731 struct ip6_flowlabel *flowlabel = NULL;
732 struct dst_entry *dst = NULL;
734 int addr_len = msg->msg_namelen;
740 /* Rough check on arithmetic overflow,
741 better check is made in ip6_append_data().
746 /* Mirror BSD error message compatibility */
747 if (msg->msg_flags & MSG_OOB)
751 * Get and verify the address.
753 memset(&fl, 0, sizeof(fl));
755 fl.mark = sk->sk_mark;
758 if (addr_len < SIN6_LEN_RFC2133)
761 if (sin6->sin6_family && sin6->sin6_family != AF_INET6)
762 return(-EAFNOSUPPORT);
764 /* port is the proto value [0..255] carried in nexthdr */
765 proto = ntohs(sin6->sin6_port);
769 else if (proto != inet->num)
775 daddr = &sin6->sin6_addr;
777 fl.fl6_flowlabel = sin6->sin6_flowinfo&IPV6_FLOWINFO_MASK;
778 if (fl.fl6_flowlabel&IPV6_FLOWLABEL_MASK) {
779 flowlabel = fl6_sock_lookup(sk, fl.fl6_flowlabel);
780 if (flowlabel == NULL)
782 daddr = &flowlabel->dst;
787 * Otherwise it will be difficult to maintain
790 if (sk->sk_state == TCP_ESTABLISHED &&
791 ipv6_addr_equal(daddr, &np->daddr))
794 if (addr_len >= sizeof(struct sockaddr_in6) &&
795 sin6->sin6_scope_id &&
796 ipv6_addr_type(daddr)&IPV6_ADDR_LINKLOCAL)
797 fl.oif = sin6->sin6_scope_id;
799 if (sk->sk_state != TCP_ESTABLISHED)
800 return -EDESTADDRREQ;
804 fl.fl6_flowlabel = np->flow_label;
807 if (ipv6_addr_any(daddr)) {
809 * unspecified destination address
810 * treated as error... is this correct ?
812 fl6_sock_release(flowlabel);
817 fl.oif = sk->sk_bound_dev_if;
819 if (msg->msg_controllen) {
821 memset(opt, 0, sizeof(struct ipv6_txoptions));
822 opt->tot_len = sizeof(struct ipv6_txoptions);
824 err = datagram_send_ctl(msg, &fl, opt, &hlimit, &tclass);
826 fl6_sock_release(flowlabel);
829 if ((fl.fl6_flowlabel&IPV6_FLOWLABEL_MASK) && !flowlabel) {
830 flowlabel = fl6_sock_lookup(sk, fl.fl6_flowlabel);
831 if (flowlabel == NULL)
834 if (!(opt->opt_nflen|opt->opt_flen))
840 opt = fl6_merge_options(&opt_space, flowlabel, opt);
841 opt = ipv6_fixup_options(&opt_space, opt);
844 err = rawv6_probe_proto_opt(&fl, msg);
848 ipv6_addr_copy(&fl.fl6_dst, daddr);
849 if (ipv6_addr_any(&fl.fl6_src) && !ipv6_addr_any(&np->saddr))
850 ipv6_addr_copy(&fl.fl6_src, &np->saddr);
852 /* merge ip6_build_xmit from ip6_output */
853 if (opt && opt->srcrt) {
854 struct rt0_hdr *rt0 = (struct rt0_hdr *) opt->srcrt;
855 ipv6_addr_copy(&final, &fl.fl6_dst);
856 ipv6_addr_copy(&fl.fl6_dst, rt0->addr);
860 if (!fl.oif && ipv6_addr_is_multicast(&fl.fl6_dst))
861 fl.oif = np->mcast_oif;
862 security_sk_classify_flow(sk, &fl);
864 err = ip6_dst_lookup(sk, &dst, &fl);
868 ipv6_addr_copy(&fl.fl6_dst, final_p);
870 if ((err = __xfrm_lookup(&dst, &fl, sk, XFRM_LOOKUP_WAIT)) < 0) {
872 err = ip6_dst_blackhole(sk, &dst, &fl);
878 if (ipv6_addr_is_multicast(&fl.fl6_dst))
879 hlimit = np->mcast_hops;
881 hlimit = np->hop_limit;
883 hlimit = ip6_dst_hoplimit(dst);
892 if (msg->msg_flags&MSG_CONFIRM)
897 err = rawv6_send_hdrinc(sk, msg->msg_iov, len, &fl, (struct rt6_info*)dst, msg->msg_flags);
900 err = ip6_append_data(sk, ip_generic_getfrag, msg->msg_iov,
901 len, 0, hlimit, tclass, opt, &fl, (struct rt6_info*)dst,
905 ip6_flush_pending_frames(sk);
906 else if (!(msg->msg_flags & MSG_MORE))
907 err = rawv6_push_pending_frames(sk, &fl, rp);
913 fl6_sock_release(flowlabel);
914 return err<0?err:len;
917 if (!(msg->msg_flags & MSG_PROBE) || len)
918 goto back_from_confirm;
923 static int rawv6_seticmpfilter(struct sock *sk, int level, int optname,
924 char __user *optval, int optlen)
928 if (optlen > sizeof(struct icmp6_filter))
929 optlen = sizeof(struct icmp6_filter);
930 if (copy_from_user(&raw6_sk(sk)->filter, optval, optlen))
940 static int rawv6_geticmpfilter(struct sock *sk, int level, int optname,
941 char __user *optval, int __user *optlen)
947 if (get_user(len, optlen))
951 if (len > sizeof(struct icmp6_filter))
952 len = sizeof(struct icmp6_filter);
953 if (put_user(len, optlen))
955 if (copy_to_user(optval, &raw6_sk(sk)->filter, len))
966 static int do_rawv6_setsockopt(struct sock *sk, int level, int optname,
967 char __user *optval, int optlen)
969 struct raw6_sock *rp = raw6_sk(sk);
972 if (get_user(val, (int __user *)optval))
977 /* You may get strange result with a positive odd offset;
978 RFC2292bis agrees with me. */
979 if (val > 0 && (val&1))
992 return(-ENOPROTOOPT);
996 static int rawv6_setsockopt(struct sock *sk, int level, int optname,
997 char __user *optval, int optlen)
1004 if (inet_sk(sk)->num != IPPROTO_ICMPV6)
1006 return rawv6_seticmpfilter(sk, level, optname, optval,
1009 if (optname == IPV6_CHECKSUM)
1012 return ipv6_setsockopt(sk, level, optname, optval,
1016 return do_rawv6_setsockopt(sk, level, optname, optval, optlen);
1019 #ifdef CONFIG_COMPAT
1020 static int compat_rawv6_setsockopt(struct sock *sk, int level, int optname,
1021 char __user *optval, int optlen)
1027 if (inet_sk(sk)->num != IPPROTO_ICMPV6)
1029 return rawv6_seticmpfilter(sk, level, optname, optval, optlen);
1031 if (optname == IPV6_CHECKSUM)
1034 return compat_ipv6_setsockopt(sk, level, optname,
1037 return do_rawv6_setsockopt(sk, level, optname, optval, optlen);
1041 static int do_rawv6_getsockopt(struct sock *sk, int level, int optname,
1042 char __user *optval, int __user *optlen)
1044 struct raw6_sock *rp = raw6_sk(sk);
1047 if (get_user(len,optlen))
1052 if (rp->checksum == 0)
1059 return -ENOPROTOOPT;
1062 len = min_t(unsigned int, sizeof(int), len);
1064 if (put_user(len, optlen))
1066 if (copy_to_user(optval,&val,len))
1071 static int rawv6_getsockopt(struct sock *sk, int level, int optname,
1072 char __user *optval, int __user *optlen)
1079 if (inet_sk(sk)->num != IPPROTO_ICMPV6)
1081 return rawv6_geticmpfilter(sk, level, optname, optval,
1084 if (optname == IPV6_CHECKSUM)
1087 return ipv6_getsockopt(sk, level, optname, optval,
1091 return do_rawv6_getsockopt(sk, level, optname, optval, optlen);
1094 #ifdef CONFIG_COMPAT
1095 static int compat_rawv6_getsockopt(struct sock *sk, int level, int optname,
1096 char __user *optval, int __user *optlen)
1102 if (inet_sk(sk)->num != IPPROTO_ICMPV6)
1104 return rawv6_geticmpfilter(sk, level, optname, optval, optlen);
1106 if (optname == IPV6_CHECKSUM)
1109 return compat_ipv6_getsockopt(sk, level, optname,
1112 return do_rawv6_getsockopt(sk, level, optname, optval, optlen);
1116 static int rawv6_ioctl(struct sock *sk, int cmd, unsigned long arg)
1121 int amount = atomic_read(&sk->sk_wmem_alloc);
1122 return put_user(amount, (int __user *)arg);
1126 struct sk_buff *skb;
1129 spin_lock_bh(&sk->sk_receive_queue.lock);
1130 skb = skb_peek(&sk->sk_receive_queue);
1132 amount = skb->tail - skb->transport_header;
1133 spin_unlock_bh(&sk->sk_receive_queue.lock);
1134 return put_user(amount, (int __user *)arg);
1138 return -ENOIOCTLCMD;
1142 static void rawv6_close(struct sock *sk, long timeout)
1144 if (inet_sk(sk)->num == IPPROTO_RAW)
1145 ip6_ra_control(sk, -1, NULL);
1147 sk_common_release(sk);
1150 static int rawv6_init_sk(struct sock *sk)
1152 struct raw6_sock *rp = raw6_sk(sk);
1154 switch (inet_sk(sk)->num) {
1155 case IPPROTO_ICMPV6:
1169 struct proto rawv6_prot = {
1171 .owner = THIS_MODULE,
1172 .close = rawv6_close,
1173 .connect = ip6_datagram_connect,
1174 .disconnect = udp_disconnect,
1175 .ioctl = rawv6_ioctl,
1176 .init = rawv6_init_sk,
1177 .destroy = inet6_destroy_sock,
1178 .setsockopt = rawv6_setsockopt,
1179 .getsockopt = rawv6_getsockopt,
1180 .sendmsg = rawv6_sendmsg,
1181 .recvmsg = rawv6_recvmsg,
1183 .backlog_rcv = rawv6_rcv_skb,
1184 .hash = raw_hash_sk,
1185 .unhash = raw_unhash_sk,
1186 .obj_size = sizeof(struct raw6_sock),
1187 .h.raw_hash = &raw_v6_hashinfo,
1188 #ifdef CONFIG_COMPAT
1189 .compat_setsockopt = compat_rawv6_setsockopt,
1190 .compat_getsockopt = compat_rawv6_getsockopt,
1194 #ifdef CONFIG_PROC_FS
1195 static void raw6_sock_seq_show(struct seq_file *seq, struct sock *sp, int i)
1197 struct ipv6_pinfo *np = inet6_sk(sp);
1198 struct in6_addr *dest, *src;
1202 src = &np->rcv_saddr;
1204 srcp = inet_sk(sp)->num;
1206 "%4d: %08X%08X%08X%08X:%04X %08X%08X%08X%08X:%04X "
1207 "%02X %08X:%08X %02X:%08lX %08X %5d %8d %lu %d %p %d\n",
1209 src->s6_addr32[0], src->s6_addr32[1],
1210 src->s6_addr32[2], src->s6_addr32[3], srcp,
1211 dest->s6_addr32[0], dest->s6_addr32[1],
1212 dest->s6_addr32[2], dest->s6_addr32[3], destp,
1214 atomic_read(&sp->sk_wmem_alloc),
1215 atomic_read(&sp->sk_rmem_alloc),
1219 atomic_read(&sp->sk_refcnt), sp, atomic_read(&sp->sk_drops));
1222 static int raw6_seq_show(struct seq_file *seq, void *v)
1224 if (v == SEQ_START_TOKEN)
1229 "st tx_queue rx_queue tr tm->when retrnsmt"
1230 " uid timeout inode drops\n");
1232 raw6_sock_seq_show(seq, v, raw_seq_private(seq)->bucket);
1236 static const struct seq_operations raw6_seq_ops = {
1237 .start = raw_seq_start,
1238 .next = raw_seq_next,
1239 .stop = raw_seq_stop,
1240 .show = raw6_seq_show,
1243 static int raw6_seq_open(struct inode *inode, struct file *file)
1245 return raw_seq_open(inode, file, &raw_v6_hashinfo, &raw6_seq_ops);
1248 static const struct file_operations raw6_seq_fops = {
1249 .owner = THIS_MODULE,
1250 .open = raw6_seq_open,
1252 .llseek = seq_lseek,
1253 .release = seq_release_net,
1256 static int raw6_init_net(struct net *net)
1258 if (!proc_net_fops_create(net, "raw6", S_IRUGO, &raw6_seq_fops))
1264 static void raw6_exit_net(struct net *net)
1266 proc_net_remove(net, "raw6");
1269 static struct pernet_operations raw6_net_ops = {
1270 .init = raw6_init_net,
1271 .exit = raw6_exit_net,
1274 int __init raw6_proc_init(void)
1276 return register_pernet_subsys(&raw6_net_ops);
1279 void raw6_proc_exit(void)
1281 unregister_pernet_subsys(&raw6_net_ops);
1283 #endif /* CONFIG_PROC_FS */
1285 /* Same as inet6_dgram_ops, sans udp_poll. */
1286 static const struct proto_ops inet6_sockraw_ops = {
1288 .owner = THIS_MODULE,
1289 .release = inet6_release,
1291 .connect = inet_dgram_connect, /* ok */
1292 .socketpair = sock_no_socketpair, /* a do nothing */
1293 .accept = sock_no_accept, /* a do nothing */
1294 .getname = inet6_getname,
1295 .poll = datagram_poll, /* ok */
1296 .ioctl = inet6_ioctl, /* must change */
1297 .listen = sock_no_listen, /* ok */
1298 .shutdown = inet_shutdown, /* ok */
1299 .setsockopt = sock_common_setsockopt, /* ok */
1300 .getsockopt = sock_common_getsockopt, /* ok */
1301 .sendmsg = inet_sendmsg, /* ok */
1302 .recvmsg = sock_common_recvmsg, /* ok */
1303 .mmap = sock_no_mmap,
1304 .sendpage = sock_no_sendpage,
1305 #ifdef CONFIG_COMPAT
1306 .compat_setsockopt = compat_sock_common_setsockopt,
1307 .compat_getsockopt = compat_sock_common_getsockopt,
1311 static struct inet_protosw rawv6_protosw = {
1313 .protocol = IPPROTO_IP, /* wild card */
1314 .prot = &rawv6_prot,
1315 .ops = &inet6_sockraw_ops,
1316 .capability = CAP_NET_RAW,
1317 .no_check = UDP_CSUM_DEFAULT,
1318 .flags = INET_PROTOSW_REUSE,
1321 int __init rawv6_init(void)
1325 ret = inet6_register_protosw(&rawv6_protosw);
1332 void rawv6_exit(void)
1334 inet6_unregister_protosw(&rawv6_protosw);