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 (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]);
172 * The first socket found will be delivered after
173 * delivery to transport protocols.
179 net = dev_net(skb->dev);
180 sk = __raw_v6_lookup(net, sk, nexthdr, daddr, saddr, IP6CB(skb)->iif);
188 filtered = icmpv6_filter(sk, skb);
191 #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
194 /* XXX: To validate MH only once for each packet,
195 * this is placed here. It should be after checking
196 * xfrm policy, however it doesn't. The checking xfrm
197 * policy is placed in rawv6_rcv() because it is
198 * required for each socket.
200 int (*filter)(struct sock *sock, struct sk_buff *skb);
202 filter = rcu_dereference(mh_filter);
203 filtered = filter ? filter(sk, skb) : 0;
215 struct sk_buff *clone = skb_clone(skb, GFP_ATOMIC);
217 /* Not releasing hash table! */
220 rawv6_rcv(sk, clone);
223 sk = __raw_v6_lookup(net, sk_next(sk), nexthdr, daddr, saddr,
227 read_unlock(&raw_v6_hashinfo.lock);
231 int raw6_local_deliver(struct sk_buff *skb, int nexthdr)
235 raw_sk = sk_head(&raw_v6_hashinfo.ht[nexthdr & (MAX_INET_PROTOS - 1)]);
236 if (raw_sk && !ipv6_raw_deliver(skb, nexthdr))
239 return raw_sk != NULL;
242 /* This cleans up af_inet6 a bit. -DaveM */
243 static int rawv6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
245 struct inet_sock *inet = inet_sk(sk);
246 struct ipv6_pinfo *np = inet6_sk(sk);
247 struct sockaddr_in6 *addr = (struct sockaddr_in6 *) uaddr;
252 if (addr_len < SIN6_LEN_RFC2133)
254 addr_type = ipv6_addr_type(&addr->sin6_addr);
256 /* Raw sockets are IPv6 only */
257 if (addr_type == IPV6_ADDR_MAPPED)
258 return(-EADDRNOTAVAIL);
263 if (sk->sk_state != TCP_CLOSE)
266 /* Check if the address belongs to the host. */
267 if (addr_type != IPV6_ADDR_ANY) {
268 struct net_device *dev = NULL;
270 if (addr_type & IPV6_ADDR_LINKLOCAL) {
271 if (addr_len >= sizeof(struct sockaddr_in6) &&
272 addr->sin6_scope_id) {
273 /* Override any existing binding, if another
274 * one is supplied by user.
276 sk->sk_bound_dev_if = addr->sin6_scope_id;
279 /* Binding to link-local address requires an interface */
280 if (!sk->sk_bound_dev_if)
283 dev = dev_get_by_index(sock_net(sk), sk->sk_bound_dev_if);
290 /* ipv4 addr of the socket is invalid. Only the
291 * unspecified and mapped address have a v4 equivalent.
293 v4addr = LOOPBACK4_IPV6;
294 if (!(addr_type & IPV6_ADDR_MULTICAST)) {
295 err = -EADDRNOTAVAIL;
296 if (!ipv6_chk_addr(sock_net(sk), &addr->sin6_addr,
307 inet->rcv_saddr = inet->saddr = v4addr;
308 ipv6_addr_copy(&np->rcv_saddr, &addr->sin6_addr);
309 if (!(addr_type & IPV6_ADDR_MULTICAST))
310 ipv6_addr_copy(&np->saddr, &addr->sin6_addr);
317 static void rawv6_err(struct sock *sk, struct sk_buff *skb,
318 struct inet6_skb_parm *opt,
319 int type, int code, int offset, __be32 info)
321 struct inet_sock *inet = inet_sk(sk);
322 struct ipv6_pinfo *np = inet6_sk(sk);
326 /* Report error on raw socket, if:
327 1. User requested recverr.
328 2. Socket is connected (otherwise the error indication
329 is useless without recverr and error is hard.
331 if (!np->recverr && sk->sk_state != TCP_ESTABLISHED)
334 harderr = icmpv6_err_convert(type, code, &err);
335 if (type == ICMPV6_PKT_TOOBIG)
336 harderr = (np->pmtudisc == IPV6_PMTUDISC_DO);
339 u8 *payload = skb->data;
342 ipv6_icmp_error(sk, skb, err, 0, ntohl(info), payload);
345 if (np->recverr || harderr) {
347 sk->sk_error_report(sk);
351 void raw6_icmp_error(struct sk_buff *skb, int nexthdr,
352 int type, int code, int inner_offset, __be32 info)
356 struct in6_addr *saddr, *daddr;
359 hash = nexthdr & (RAW_HTABLE_SIZE - 1);
361 read_lock(&raw_v6_hashinfo.lock);
362 sk = sk_head(&raw_v6_hashinfo.ht[hash]);
364 saddr = &ipv6_hdr(skb)->saddr;
365 daddr = &ipv6_hdr(skb)->daddr;
366 net = dev_net(skb->dev);
368 while ((sk = __raw_v6_lookup(net, sk, nexthdr, saddr, daddr,
370 rawv6_err(sk, skb, NULL, type, code,
375 read_unlock(&raw_v6_hashinfo.lock);
378 static inline int rawv6_rcv_skb(struct sock * sk, struct sk_buff * skb)
380 if ((raw6_sk(sk)->checksum || sk->sk_filter) &&
381 skb_checksum_complete(skb)) {
382 atomic_inc(&sk->sk_drops);
387 /* Charge it to the socket. */
388 if (sock_queue_rcv_skb(sk,skb)<0) {
389 atomic_inc(&sk->sk_drops);
398 * This is next to useless...
399 * if we demultiplex in network layer we don't need the extra call
400 * just to queue the skb...
401 * maybe we could have the network decide upon a hint if it
402 * should call raw_rcv for demultiplexing
404 int rawv6_rcv(struct sock *sk, struct sk_buff *skb)
406 struct inet_sock *inet = inet_sk(sk);
407 struct raw6_sock *rp = raw6_sk(sk);
409 if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb)) {
410 atomic_inc(&sk->sk_drops);
416 skb->ip_summed = CHECKSUM_UNNECESSARY;
418 if (skb->ip_summed == CHECKSUM_COMPLETE) {
419 skb_postpull_rcsum(skb, skb_network_header(skb),
420 skb_network_header_len(skb));
421 if (!csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
422 &ipv6_hdr(skb)->daddr,
423 skb->len, inet->num, skb->csum))
424 skb->ip_summed = CHECKSUM_UNNECESSARY;
426 if (!skb_csum_unnecessary(skb))
427 skb->csum = ~csum_unfold(csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
428 &ipv6_hdr(skb)->daddr,
433 if (skb_checksum_complete(skb)) {
434 atomic_inc(&sk->sk_drops);
440 rawv6_rcv_skb(sk, skb);
446 * This should be easy, if there is something there
447 * we return it, otherwise we block.
450 static int rawv6_recvmsg(struct kiocb *iocb, struct sock *sk,
451 struct msghdr *msg, size_t len,
452 int noblock, int flags, int *addr_len)
454 struct ipv6_pinfo *np = inet6_sk(sk);
455 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)msg->msg_name;
464 *addr_len=sizeof(*sin6);
466 if (flags & MSG_ERRQUEUE)
467 return ipv6_recv_error(sk, msg, len);
469 skb = skb_recv_datagram(sk, flags, noblock, &err);
476 msg->msg_flags |= MSG_TRUNC;
479 if (skb_csum_unnecessary(skb)) {
480 err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
481 } else if (msg->msg_flags&MSG_TRUNC) {
482 if (__skb_checksum_complete(skb))
484 err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
486 err = skb_copy_and_csum_datagram_iovec(skb, 0, msg->msg_iov);
493 /* Copy the address. */
495 sin6->sin6_family = AF_INET6;
497 ipv6_addr_copy(&sin6->sin6_addr, &ipv6_hdr(skb)->saddr);
498 sin6->sin6_flowinfo = 0;
499 sin6->sin6_scope_id = 0;
500 if (ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL)
501 sin6->sin6_scope_id = IP6CB(skb)->iif;
504 sock_recv_timestamp(msg, sk, skb);
507 datagram_recv_ctl(sk, msg, skb);
510 if (flags & MSG_TRUNC)
514 skb_free_datagram(sk, skb);
519 skb_kill_datagram(sk, skb, flags);
521 /* Error for blocking case is chosen to masquerade
522 as some normal condition.
524 err = (flags&MSG_DONTWAIT) ? -EAGAIN : -EHOSTUNREACH;
525 atomic_inc(&sk->sk_drops);
529 static int rawv6_push_pending_frames(struct sock *sk, struct flowi *fl,
530 struct raw6_sock *rp)
543 if ((skb = skb_peek(&sk->sk_write_queue)) == NULL)
547 total_len = inet_sk(sk)->cork.length - (skb_network_header(skb) -
549 if (offset >= total_len - 1) {
551 ip6_flush_pending_frames(sk);
555 /* should be check HW csum miyazawa */
556 if (skb_queue_len(&sk->sk_write_queue) == 1) {
558 * Only one fragment on the socket.
560 tmp_csum = skb->csum;
562 struct sk_buff *csum_skb = NULL;
565 skb_queue_walk(&sk->sk_write_queue, skb) {
566 tmp_csum = csum_add(tmp_csum, skb->csum);
571 len = skb->len - skb_transport_offset(skb);
583 offset += skb_transport_offset(skb);
584 if (skb_copy_bits(skb, offset, &csum, 2))
587 /* in case cksum was not initialized */
589 tmp_csum = csum_sub(tmp_csum, csum_unfold(csum));
591 csum = csum_ipv6_magic(&fl->fl6_src,
593 total_len, fl->proto, tmp_csum);
595 if (csum == 0 && fl->proto == IPPROTO_UDP)
596 csum = CSUM_MANGLED_0;
598 if (skb_store_bits(skb, offset, &csum, 2))
602 err = ip6_push_pending_frames(sk);
607 static int rawv6_send_hdrinc(struct sock *sk, void *from, int length,
608 struct flowi *fl, struct rt6_info *rt,
611 struct ipv6_pinfo *np = inet6_sk(sk);
617 if (length > rt->u.dst.dev->mtu) {
618 ipv6_local_error(sk, EMSGSIZE, fl, rt->u.dst.dev->mtu);
624 hh_len = LL_RESERVED_SPACE(rt->u.dst.dev);
626 skb = sock_alloc_send_skb(sk, length+hh_len+15,
627 flags&MSG_DONTWAIT, &err);
630 skb_reserve(skb, hh_len);
632 skb->priority = sk->sk_priority;
633 skb->mark = sk->sk_mark;
634 skb->dst = dst_clone(&rt->u.dst);
636 skb_put(skb, length);
637 skb_reset_network_header(skb);
640 skb->ip_summed = CHECKSUM_NONE;
642 skb->transport_header = skb->network_header;
643 err = memcpy_fromiovecend((void *)iph, from, 0, length);
647 IP6_INC_STATS(rt->rt6i_idev, IPSTATS_MIB_OUTREQUESTS);
648 err = NF_HOOK(PF_INET6, NF_INET_LOCAL_OUT, skb, NULL, rt->u.dst.dev,
651 err = np->recverr ? net_xmit_errno(err) : 0;
661 IP6_INC_STATS(rt->rt6i_idev, IPSTATS_MIB_OUTDISCARDS);
665 static int rawv6_probe_proto_opt(struct flowi *fl, struct msghdr *msg)
668 u8 __user *type = NULL;
669 u8 __user *code = NULL;
677 for (i = 0; i < msg->msg_iovlen; i++) {
678 iov = &msg->msg_iov[i];
684 /* check if one-byte field is readable or not. */
685 if (iov->iov_base && iov->iov_len < 1)
689 type = iov->iov_base;
690 /* check if code field is readable or not. */
691 if (iov->iov_len > 1)
694 code = iov->iov_base;
697 if (get_user(fl->fl_icmp_type, type) ||
698 get_user(fl->fl_icmp_code, code))
704 if (iov->iov_base && iov->iov_len < 1)
706 /* check if type field is readable or not. */
707 if (iov->iov_len > 2 - len) {
708 u8 __user *p = iov->iov_base;
709 if (get_user(fl->fl_mh_type, &p[2 - len]))
726 static int rawv6_sendmsg(struct kiocb *iocb, struct sock *sk,
727 struct msghdr *msg, size_t len)
729 struct ipv6_txoptions opt_space;
730 struct sockaddr_in6 * sin6 = (struct sockaddr_in6 *) msg->msg_name;
731 struct in6_addr *daddr, *final_p = NULL, final;
732 struct inet_sock *inet = inet_sk(sk);
733 struct ipv6_pinfo *np = inet6_sk(sk);
734 struct raw6_sock *rp = raw6_sk(sk);
735 struct ipv6_txoptions *opt = NULL;
736 struct ip6_flowlabel *flowlabel = NULL;
737 struct dst_entry *dst = NULL;
739 int addr_len = msg->msg_namelen;
745 /* Rough check on arithmetic overflow,
746 better check is made in ip6_append_data().
751 /* Mirror BSD error message compatibility */
752 if (msg->msg_flags & MSG_OOB)
756 * Get and verify the address.
758 memset(&fl, 0, sizeof(fl));
760 fl.mark = sk->sk_mark;
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 = ip6_dst_hoplimit(dst);
897 if (msg->msg_flags&MSG_CONFIRM)
902 err = rawv6_send_hdrinc(sk, msg->msg_iov, len, &fl, (struct rt6_info*)dst, msg->msg_flags);
905 err = ip6_append_data(sk, ip_generic_getfrag, msg->msg_iov,
906 len, 0, hlimit, tclass, opt, &fl, (struct rt6_info*)dst,
910 ip6_flush_pending_frames(sk);
911 else if (!(msg->msg_flags & MSG_MORE))
912 err = rawv6_push_pending_frames(sk, &fl, rp);
918 fl6_sock_release(flowlabel);
919 return err<0?err:len;
922 if (!(msg->msg_flags & MSG_PROBE) || len)
923 goto back_from_confirm;
928 static int rawv6_seticmpfilter(struct sock *sk, int level, int optname,
929 char __user *optval, int optlen)
933 if (optlen > sizeof(struct icmp6_filter))
934 optlen = sizeof(struct icmp6_filter);
935 if (copy_from_user(&raw6_sk(sk)->filter, optval, optlen))
945 static int rawv6_geticmpfilter(struct sock *sk, int level, int optname,
946 char __user *optval, int __user *optlen)
952 if (get_user(len, optlen))
956 if (len > sizeof(struct icmp6_filter))
957 len = sizeof(struct icmp6_filter);
958 if (put_user(len, optlen))
960 if (copy_to_user(optval, &raw6_sk(sk)->filter, len))
971 static int do_rawv6_setsockopt(struct sock *sk, int level, int optname,
972 char __user *optval, int optlen)
974 struct raw6_sock *rp = raw6_sk(sk);
977 if (get_user(val, (int __user *)optval))
982 /* You may get strange result with a positive odd offset;
983 RFC2292bis agrees with me. */
984 if (val > 0 && (val&1))
997 return(-ENOPROTOOPT);
1001 static int rawv6_setsockopt(struct sock *sk, int level, int optname,
1002 char __user *optval, int optlen)
1009 if (inet_sk(sk)->num != IPPROTO_ICMPV6)
1011 return rawv6_seticmpfilter(sk, level, optname, optval,
1014 if (optname == IPV6_CHECKSUM)
1017 return ipv6_setsockopt(sk, level, optname, optval,
1021 return do_rawv6_setsockopt(sk, level, optname, optval, optlen);
1024 #ifdef CONFIG_COMPAT
1025 static int compat_rawv6_setsockopt(struct sock *sk, int level, int optname,
1026 char __user *optval, int optlen)
1032 if (inet_sk(sk)->num != IPPROTO_ICMPV6)
1034 return rawv6_seticmpfilter(sk, level, optname, optval, optlen);
1036 if (optname == IPV6_CHECKSUM)
1039 return compat_ipv6_setsockopt(sk, level, optname,
1042 return do_rawv6_setsockopt(sk, level, optname, optval, optlen);
1046 static int do_rawv6_getsockopt(struct sock *sk, int level, int optname,
1047 char __user *optval, int __user *optlen)
1049 struct raw6_sock *rp = raw6_sk(sk);
1052 if (get_user(len,optlen))
1057 if (rp->checksum == 0)
1064 return -ENOPROTOOPT;
1067 len = min_t(unsigned int, sizeof(int), len);
1069 if (put_user(len, optlen))
1071 if (copy_to_user(optval,&val,len))
1076 static int rawv6_getsockopt(struct sock *sk, int level, int optname,
1077 char __user *optval, int __user *optlen)
1084 if (inet_sk(sk)->num != IPPROTO_ICMPV6)
1086 return rawv6_geticmpfilter(sk, level, optname, optval,
1089 if (optname == IPV6_CHECKSUM)
1092 return ipv6_getsockopt(sk, level, optname, optval,
1096 return do_rawv6_getsockopt(sk, level, optname, optval, optlen);
1099 #ifdef CONFIG_COMPAT
1100 static int compat_rawv6_getsockopt(struct sock *sk, int level, int optname,
1101 char __user *optval, int __user *optlen)
1107 if (inet_sk(sk)->num != IPPROTO_ICMPV6)
1109 return rawv6_geticmpfilter(sk, level, optname, optval, optlen);
1111 if (optname == IPV6_CHECKSUM)
1114 return compat_ipv6_getsockopt(sk, level, optname,
1117 return do_rawv6_getsockopt(sk, level, optname, optval, optlen);
1121 static int rawv6_ioctl(struct sock *sk, int cmd, unsigned long arg)
1126 int amount = atomic_read(&sk->sk_wmem_alloc);
1127 return put_user(amount, (int __user *)arg);
1131 struct sk_buff *skb;
1134 spin_lock_bh(&sk->sk_receive_queue.lock);
1135 skb = skb_peek(&sk->sk_receive_queue);
1137 amount = skb->tail - skb->transport_header;
1138 spin_unlock_bh(&sk->sk_receive_queue.lock);
1139 return put_user(amount, (int __user *)arg);
1143 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 DEFINE_PROTO_INUSE(rawv6)
1176 struct proto rawv6_prot = {
1178 .owner = THIS_MODULE,
1179 .close = rawv6_close,
1180 .connect = ip6_datagram_connect,
1181 .disconnect = udp_disconnect,
1182 .ioctl = rawv6_ioctl,
1183 .init = rawv6_init_sk,
1184 .destroy = inet6_destroy_sock,
1185 .setsockopt = rawv6_setsockopt,
1186 .getsockopt = rawv6_getsockopt,
1187 .sendmsg = rawv6_sendmsg,
1188 .recvmsg = rawv6_recvmsg,
1190 .backlog_rcv = rawv6_rcv_skb,
1191 .hash = raw_hash_sk,
1192 .unhash = raw_unhash_sk,
1193 .obj_size = sizeof(struct raw6_sock),
1194 .h.raw_hash = &raw_v6_hashinfo,
1195 #ifdef CONFIG_COMPAT
1196 .compat_setsockopt = compat_rawv6_setsockopt,
1197 .compat_getsockopt = compat_rawv6_getsockopt,
1199 REF_PROTO_INUSE(rawv6)
1202 #ifdef CONFIG_PROC_FS
1203 static void raw6_sock_seq_show(struct seq_file *seq, struct sock *sp, int i)
1205 struct ipv6_pinfo *np = inet6_sk(sp);
1206 struct in6_addr *dest, *src;
1210 src = &np->rcv_saddr;
1212 srcp = inet_sk(sp)->num;
1214 "%4d: %08X%08X%08X%08X:%04X %08X%08X%08X%08X:%04X "
1215 "%02X %08X:%08X %02X:%08lX %08X %5d %8d %lu %d %p %d\n",
1217 src->s6_addr32[0], src->s6_addr32[1],
1218 src->s6_addr32[2], src->s6_addr32[3], srcp,
1219 dest->s6_addr32[0], dest->s6_addr32[1],
1220 dest->s6_addr32[2], dest->s6_addr32[3], destp,
1222 atomic_read(&sp->sk_wmem_alloc),
1223 atomic_read(&sp->sk_rmem_alloc),
1227 atomic_read(&sp->sk_refcnt), sp, atomic_read(&sp->sk_drops));
1230 static int raw6_seq_show(struct seq_file *seq, void *v)
1232 if (v == SEQ_START_TOKEN)
1237 "st tx_queue rx_queue tr tm->when retrnsmt"
1238 " uid timeout inode drops\n");
1240 raw6_sock_seq_show(seq, v, raw_seq_private(seq)->bucket);
1244 static const struct seq_operations raw6_seq_ops = {
1245 .start = raw_seq_start,
1246 .next = raw_seq_next,
1247 .stop = raw_seq_stop,
1248 .show = raw6_seq_show,
1251 static int raw6_seq_open(struct inode *inode, struct file *file)
1253 return raw_seq_open(inode, file, &raw_v6_hashinfo, &raw6_seq_ops);
1256 static const struct file_operations raw6_seq_fops = {
1257 .owner = THIS_MODULE,
1258 .open = raw6_seq_open,
1260 .llseek = seq_lseek,
1261 .release = seq_release_net,
1264 static int raw6_init_net(struct net *net)
1266 if (!proc_net_fops_create(net, "raw6", S_IRUGO, &raw6_seq_fops))
1272 static void raw6_exit_net(struct net *net)
1274 proc_net_remove(net, "raw6");
1277 static struct pernet_operations raw6_net_ops = {
1278 .init = raw6_init_net,
1279 .exit = raw6_exit_net,
1282 int __init raw6_proc_init(void)
1284 return register_pernet_subsys(&raw6_net_ops);
1287 void raw6_proc_exit(void)
1289 unregister_pernet_subsys(&raw6_net_ops);
1291 #endif /* CONFIG_PROC_FS */
1293 /* Same as inet6_dgram_ops, sans udp_poll. */
1294 static const struct proto_ops inet6_sockraw_ops = {
1296 .owner = THIS_MODULE,
1297 .release = inet6_release,
1299 .connect = inet_dgram_connect, /* ok */
1300 .socketpair = sock_no_socketpair, /* a do nothing */
1301 .accept = sock_no_accept, /* a do nothing */
1302 .getname = inet6_getname,
1303 .poll = datagram_poll, /* ok */
1304 .ioctl = inet6_ioctl, /* must change */
1305 .listen = sock_no_listen, /* ok */
1306 .shutdown = inet_shutdown, /* ok */
1307 .setsockopt = sock_common_setsockopt, /* ok */
1308 .getsockopt = sock_common_getsockopt, /* ok */
1309 .sendmsg = inet_sendmsg, /* ok */
1310 .recvmsg = sock_common_recvmsg, /* ok */
1311 .mmap = sock_no_mmap,
1312 .sendpage = sock_no_sendpage,
1313 #ifdef CONFIG_COMPAT
1314 .compat_setsockopt = compat_sock_common_setsockopt,
1315 .compat_getsockopt = compat_sock_common_getsockopt,
1319 static struct inet_protosw rawv6_protosw = {
1321 .protocol = IPPROTO_IP, /* wild card */
1322 .prot = &rawv6_prot,
1323 .ops = &inet6_sockraw_ops,
1324 .capability = CAP_NET_RAW,
1325 .no_check = UDP_CSUM_DEFAULT,
1326 .flags = INET_PROTOSW_REUSE,
1329 int __init rawv6_init(void)
1333 ret = inet6_register_protosw(&rawv6_protosw);
1340 void rawv6_exit(void)
1342 inet6_unregister_protosw(&rawv6_protosw);