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)
57 #include <net/rawv6.h>
60 #include <linux/proc_fs.h>
61 #include <linux/seq_file.h>
63 struct hlist_head raw_v6_htable[RAWV6_HTABLE_SIZE];
64 DEFINE_RWLOCK(raw_v6_lock);
66 static void raw_v6_hash(struct sock *sk)
68 struct hlist_head *list = &raw_v6_htable[inet_sk(sk)->num &
69 (RAWV6_HTABLE_SIZE - 1)];
71 write_lock_bh(&raw_v6_lock);
72 sk_add_node(sk, list);
73 sock_prot_inc_use(sk->sk_prot);
74 write_unlock_bh(&raw_v6_lock);
77 static void raw_v6_unhash(struct sock *sk)
79 write_lock_bh(&raw_v6_lock);
80 if (sk_del_node_init(sk))
81 sock_prot_dec_use(sk->sk_prot);
82 write_unlock_bh(&raw_v6_lock);
86 /* Grumble... icmp and ip_input want to get at this... */
87 struct sock *__raw_v6_lookup(struct sock *sk, unsigned short num,
88 struct in6_addr *loc_addr, struct in6_addr *rmt_addr,
91 struct hlist_node *node;
92 int is_multicast = ipv6_addr_is_multicast(loc_addr);
94 sk_for_each_from(sk, node)
95 if (inet_sk(sk)->num == num) {
96 struct ipv6_pinfo *np = inet6_sk(sk);
98 if (!ipv6_addr_any(&np->daddr) &&
99 !ipv6_addr_equal(&np->daddr, rmt_addr))
102 if (sk->sk_bound_dev_if && sk->sk_bound_dev_if != dif)
105 if (!ipv6_addr_any(&np->rcv_saddr)) {
106 if (ipv6_addr_equal(&np->rcv_saddr, loc_addr))
109 inet6_mc_check(sk, loc_addr, rmt_addr))
124 static __inline__ int icmpv6_filter(struct sock *sk, struct sk_buff *skb)
126 struct icmp6hdr *icmph;
127 struct raw6_sock *rp = raw6_sk(sk);
129 if (pskb_may_pull(skb, sizeof(struct icmp6hdr))) {
130 __u32 *data = &rp->filter.data[0];
133 icmph = (struct icmp6hdr *) skb->data;
134 bit_nr = icmph->icmp6_type;
136 return (data[bit_nr >> 5] & (1 << (bit_nr & 31))) != 0;
141 #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
142 static int (*mh_filter)(struct sock *sock, struct sk_buff *skb);
144 int rawv6_mh_filter_register(int (*filter)(struct sock *sock,
145 struct sk_buff *skb))
147 rcu_assign_pointer(mh_filter, filter);
150 EXPORT_SYMBOL(rawv6_mh_filter_register);
152 int rawv6_mh_filter_unregister(int (*filter)(struct sock *sock,
153 struct sk_buff *skb))
155 rcu_assign_pointer(mh_filter, NULL);
159 EXPORT_SYMBOL(rawv6_mh_filter_unregister);
164 * demultiplex raw sockets.
165 * (should consider queueing the skb in the sock receive_queue
166 * without calling rawv6.c)
168 * Caller owns SKB so we must make clones.
170 int ipv6_raw_deliver(struct sk_buff *skb, int nexthdr)
172 struct in6_addr *saddr;
173 struct in6_addr *daddr;
178 saddr = &ipv6_hdr(skb)->saddr;
181 hash = nexthdr & (MAX_INET_PROTOS - 1);
183 read_lock(&raw_v6_lock);
184 sk = sk_head(&raw_v6_htable[hash]);
187 * The first socket found will be delivered after
188 * delivery to transport protocols.
194 sk = __raw_v6_lookup(sk, nexthdr, daddr, saddr, IP6CB(skb)->iif);
202 filtered = icmpv6_filter(sk, skb);
205 #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
208 /* XXX: To validate MH only once for each packet,
209 * this is placed here. It should be after checking
210 * xfrm policy, however it doesn't. The checking xfrm
211 * policy is placed in rawv6_rcv() because it is
212 * required for each socket.
214 int (*filter)(struct sock *sock, struct sk_buff *skb);
216 filter = rcu_dereference(mh_filter);
217 filtered = filter ? filter(sk, skb) : 0;
229 struct sk_buff *clone = skb_clone(skb, GFP_ATOMIC);
231 /* Not releasing hash table! */
234 rawv6_rcv(sk, clone);
237 sk = __raw_v6_lookup(sk_next(sk), nexthdr, daddr, saddr,
241 read_unlock(&raw_v6_lock);
245 /* This cleans up af_inet6 a bit. -DaveM */
246 static int rawv6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
248 struct inet_sock *inet = inet_sk(sk);
249 struct ipv6_pinfo *np = inet6_sk(sk);
250 struct sockaddr_in6 *addr = (struct sockaddr_in6 *) uaddr;
255 if (addr_len < SIN6_LEN_RFC2133)
257 addr_type = ipv6_addr_type(&addr->sin6_addr);
259 /* Raw sockets are IPv6 only */
260 if (addr_type == IPV6_ADDR_MAPPED)
261 return(-EADDRNOTAVAIL);
266 if (sk->sk_state != TCP_CLOSE)
269 /* Check if the address belongs to the host. */
270 if (addr_type != IPV6_ADDR_ANY) {
271 struct net_device *dev = NULL;
273 if (addr_type & IPV6_ADDR_LINKLOCAL) {
274 if (addr_len >= sizeof(struct sockaddr_in6) &&
275 addr->sin6_scope_id) {
276 /* Override any existing binding, if another
277 * one is supplied by user.
279 sk->sk_bound_dev_if = addr->sin6_scope_id;
282 /* Binding to link-local address requires an interface */
283 if (!sk->sk_bound_dev_if)
286 dev = dev_get_by_index(&init_net, sk->sk_bound_dev_if);
293 /* ipv4 addr of the socket is invalid. Only the
294 * unspecified and mapped address have a v4 equivalent.
296 v4addr = LOOPBACK4_IPV6;
297 if (!(addr_type & IPV6_ADDR_MULTICAST)) {
298 err = -EADDRNOTAVAIL;
299 if (!ipv6_chk_addr(&addr->sin6_addr, dev, 0)) {
309 inet->rcv_saddr = inet->saddr = v4addr;
310 ipv6_addr_copy(&np->rcv_saddr, &addr->sin6_addr);
311 if (!(addr_type & IPV6_ADDR_MULTICAST))
312 ipv6_addr_copy(&np->saddr, &addr->sin6_addr);
319 void rawv6_err(struct sock *sk, struct sk_buff *skb,
320 struct inet6_skb_parm *opt,
321 int type, int code, int offset, __be32 info)
323 struct inet_sock *inet = inet_sk(sk);
324 struct ipv6_pinfo *np = inet6_sk(sk);
328 /* Report error on raw socket, if:
329 1. User requested recverr.
330 2. Socket is connected (otherwise the error indication
331 is useless without recverr and error is hard.
333 if (!np->recverr && sk->sk_state != TCP_ESTABLISHED)
336 harderr = icmpv6_err_convert(type, code, &err);
337 if (type == ICMPV6_PKT_TOOBIG)
338 harderr = (np->pmtudisc == IPV6_PMTUDISC_DO);
341 u8 *payload = skb->data;
344 ipv6_icmp_error(sk, skb, err, 0, ntohl(info), payload);
347 if (np->recverr || harderr) {
349 sk->sk_error_report(sk);
353 static inline int rawv6_rcv_skb(struct sock * sk, struct sk_buff * skb)
355 if ((raw6_sk(sk)->checksum || sk->sk_filter) &&
356 skb_checksum_complete(skb)) {
357 /* FIXME: increment a raw6 drops counter here */
362 /* Charge it to the socket. */
363 if (sock_queue_rcv_skb(sk,skb)<0) {
364 /* FIXME: increment a raw6 drops counter here */
373 * This is next to useless...
374 * if we demultiplex in network layer we don't need the extra call
375 * just to queue the skb...
376 * maybe we could have the network decide upon a hint if it
377 * should call raw_rcv for demultiplexing
379 int rawv6_rcv(struct sock *sk, struct sk_buff *skb)
381 struct inet_sock *inet = inet_sk(sk);
382 struct raw6_sock *rp = raw6_sk(sk);
384 if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb)) {
390 skb->ip_summed = CHECKSUM_UNNECESSARY;
392 if (skb->ip_summed == CHECKSUM_COMPLETE) {
393 skb_postpull_rcsum(skb, skb_network_header(skb),
394 skb_network_header_len(skb));
395 if (!csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
396 &ipv6_hdr(skb)->daddr,
397 skb->len, inet->num, skb->csum))
398 skb->ip_summed = CHECKSUM_UNNECESSARY;
400 if (!skb_csum_unnecessary(skb))
401 skb->csum = ~csum_unfold(csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
402 &ipv6_hdr(skb)->daddr,
407 if (skb_checksum_complete(skb)) {
408 /* FIXME: increment a raw6 drops counter here */
414 rawv6_rcv_skb(sk, skb);
420 * This should be easy, if there is something there
421 * we return it, otherwise we block.
424 static int rawv6_recvmsg(struct kiocb *iocb, struct sock *sk,
425 struct msghdr *msg, size_t len,
426 int noblock, int flags, int *addr_len)
428 struct ipv6_pinfo *np = inet6_sk(sk);
429 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)msg->msg_name;
438 *addr_len=sizeof(*sin6);
440 if (flags & MSG_ERRQUEUE)
441 return ipv6_recv_error(sk, msg, len);
443 skb = skb_recv_datagram(sk, flags, noblock, &err);
450 msg->msg_flags |= MSG_TRUNC;
453 if (skb_csum_unnecessary(skb)) {
454 err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
455 } else if (msg->msg_flags&MSG_TRUNC) {
456 if (__skb_checksum_complete(skb))
458 err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
460 err = skb_copy_and_csum_datagram_iovec(skb, 0, msg->msg_iov);
467 /* Copy the address. */
469 sin6->sin6_family = AF_INET6;
471 ipv6_addr_copy(&sin6->sin6_addr, &ipv6_hdr(skb)->saddr);
472 sin6->sin6_flowinfo = 0;
473 sin6->sin6_scope_id = 0;
474 if (ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL)
475 sin6->sin6_scope_id = IP6CB(skb)->iif;
478 sock_recv_timestamp(msg, sk, skb);
481 datagram_recv_ctl(sk, msg, skb);
484 if (flags & MSG_TRUNC)
488 skb_free_datagram(sk, skb);
493 skb_kill_datagram(sk, skb, flags);
495 /* Error for blocking case is chosen to masquerade
496 as some normal condition.
498 err = (flags&MSG_DONTWAIT) ? -EAGAIN : -EHOSTUNREACH;
499 /* FIXME: increment a raw6 drops counter here */
503 static int rawv6_push_pending_frames(struct sock *sk, struct flowi *fl,
504 struct raw6_sock *rp)
517 if ((skb = skb_peek(&sk->sk_write_queue)) == NULL)
521 total_len = inet_sk(sk)->cork.length - (skb_network_header(skb) -
523 if (offset >= total_len - 1) {
525 ip6_flush_pending_frames(sk);
529 /* should be check HW csum miyazawa */
530 if (skb_queue_len(&sk->sk_write_queue) == 1) {
532 * Only one fragment on the socket.
534 tmp_csum = skb->csum;
536 struct sk_buff *csum_skb = NULL;
539 skb_queue_walk(&sk->sk_write_queue, skb) {
540 tmp_csum = csum_add(tmp_csum, skb->csum);
545 len = skb->len - skb_transport_offset(skb);
557 offset += skb_transport_offset(skb);
558 if (skb_copy_bits(skb, offset, &csum, 2))
561 /* in case cksum was not initialized */
563 tmp_csum = csum_sub(tmp_csum, csum_unfold(csum));
565 csum = csum_ipv6_magic(&fl->fl6_src,
567 total_len, fl->proto, tmp_csum);
569 if (csum == 0 && fl->proto == IPPROTO_UDP)
570 csum = CSUM_MANGLED_0;
572 if (skb_store_bits(skb, offset, &csum, 2))
576 err = ip6_push_pending_frames(sk);
581 static int rawv6_send_hdrinc(struct sock *sk, void *from, int length,
582 struct flowi *fl, struct rt6_info *rt,
585 struct ipv6_pinfo *np = inet6_sk(sk);
591 if (length > rt->u.dst.dev->mtu) {
592 ipv6_local_error(sk, EMSGSIZE, fl, rt->u.dst.dev->mtu);
598 hh_len = LL_RESERVED_SPACE(rt->u.dst.dev);
600 skb = sock_alloc_send_skb(sk, length+hh_len+15,
601 flags&MSG_DONTWAIT, &err);
604 skb_reserve(skb, hh_len);
606 skb->priority = sk->sk_priority;
607 skb->dst = dst_clone(&rt->u.dst);
609 skb_put(skb, length);
610 skb_reset_network_header(skb);
613 skb->ip_summed = CHECKSUM_NONE;
615 skb->transport_header = skb->network_header;
616 err = memcpy_fromiovecend((void *)iph, from, 0, length);
620 IP6_INC_STATS(rt->rt6i_idev, IPSTATS_MIB_OUTREQUESTS);
621 err = NF_HOOK(PF_INET6, NF_IP6_LOCAL_OUT, skb, NULL, rt->u.dst.dev,
624 err = np->recverr ? net_xmit_errno(err) : 0;
634 IP6_INC_STATS(rt->rt6i_idev, IPSTATS_MIB_OUTDISCARDS);
638 static int rawv6_probe_proto_opt(struct flowi *fl, struct msghdr *msg)
641 u8 __user *type = NULL;
642 u8 __user *code = NULL;
650 for (i = 0; i < msg->msg_iovlen; i++) {
651 iov = &msg->msg_iov[i];
657 /* check if one-byte field is readable or not. */
658 if (iov->iov_base && iov->iov_len < 1)
662 type = iov->iov_base;
663 /* check if code field is readable or not. */
664 if (iov->iov_len > 1)
667 code = iov->iov_base;
670 if (get_user(fl->fl_icmp_type, type) ||
671 get_user(fl->fl_icmp_code, code))
677 if (iov->iov_base && iov->iov_len < 1)
679 /* check if type field is readable or not. */
680 if (iov->iov_len > 2 - len) {
681 u8 __user *p = iov->iov_base;
682 if (get_user(fl->fl_mh_type, &p[2 - len]))
699 static int rawv6_sendmsg(struct kiocb *iocb, struct sock *sk,
700 struct msghdr *msg, size_t len)
702 struct ipv6_txoptions opt_space;
703 struct sockaddr_in6 * sin6 = (struct sockaddr_in6 *) msg->msg_name;
704 struct in6_addr *daddr, *final_p = NULL, final;
705 struct inet_sock *inet = inet_sk(sk);
706 struct ipv6_pinfo *np = inet6_sk(sk);
707 struct raw6_sock *rp = raw6_sk(sk);
708 struct ipv6_txoptions *opt = NULL;
709 struct ip6_flowlabel *flowlabel = NULL;
710 struct dst_entry *dst = NULL;
712 int addr_len = msg->msg_namelen;
718 /* Rough check on arithmetic overflow,
719 better check is made in ip6_append_data().
724 /* Mirror BSD error message compatibility */
725 if (msg->msg_flags & MSG_OOB)
729 * Get and verify the address.
731 memset(&fl, 0, sizeof(fl));
734 if (addr_len < SIN6_LEN_RFC2133)
737 if (sin6->sin6_family && sin6->sin6_family != AF_INET6)
738 return(-EAFNOSUPPORT);
740 /* port is the proto value [0..255] carried in nexthdr */
741 proto = ntohs(sin6->sin6_port);
745 else if (proto != inet->num)
751 daddr = &sin6->sin6_addr;
753 fl.fl6_flowlabel = sin6->sin6_flowinfo&IPV6_FLOWINFO_MASK;
754 if (fl.fl6_flowlabel&IPV6_FLOWLABEL_MASK) {
755 flowlabel = fl6_sock_lookup(sk, fl.fl6_flowlabel);
756 if (flowlabel == NULL)
758 daddr = &flowlabel->dst;
763 * Otherwise it will be difficult to maintain
766 if (sk->sk_state == TCP_ESTABLISHED &&
767 ipv6_addr_equal(daddr, &np->daddr))
770 if (addr_len >= sizeof(struct sockaddr_in6) &&
771 sin6->sin6_scope_id &&
772 ipv6_addr_type(daddr)&IPV6_ADDR_LINKLOCAL)
773 fl.oif = sin6->sin6_scope_id;
775 if (sk->sk_state != TCP_ESTABLISHED)
776 return -EDESTADDRREQ;
780 fl.fl6_flowlabel = np->flow_label;
783 if (ipv6_addr_any(daddr)) {
785 * unspecified destination address
786 * treated as error... is this correct ?
788 fl6_sock_release(flowlabel);
793 fl.oif = sk->sk_bound_dev_if;
795 if (msg->msg_controllen) {
797 memset(opt, 0, sizeof(struct ipv6_txoptions));
798 opt->tot_len = sizeof(struct ipv6_txoptions);
800 err = datagram_send_ctl(msg, &fl, opt, &hlimit, &tclass);
802 fl6_sock_release(flowlabel);
805 if ((fl.fl6_flowlabel&IPV6_FLOWLABEL_MASK) && !flowlabel) {
806 flowlabel = fl6_sock_lookup(sk, fl.fl6_flowlabel);
807 if (flowlabel == NULL)
810 if (!(opt->opt_nflen|opt->opt_flen))
816 opt = fl6_merge_options(&opt_space, flowlabel, opt);
817 opt = ipv6_fixup_options(&opt_space, opt);
820 err = rawv6_probe_proto_opt(&fl, msg);
824 ipv6_addr_copy(&fl.fl6_dst, daddr);
825 if (ipv6_addr_any(&fl.fl6_src) && !ipv6_addr_any(&np->saddr))
826 ipv6_addr_copy(&fl.fl6_src, &np->saddr);
828 /* merge ip6_build_xmit from ip6_output */
829 if (opt && opt->srcrt) {
830 struct rt0_hdr *rt0 = (struct rt0_hdr *) opt->srcrt;
831 ipv6_addr_copy(&final, &fl.fl6_dst);
832 ipv6_addr_copy(&fl.fl6_dst, rt0->addr);
836 if (!fl.oif && ipv6_addr_is_multicast(&fl.fl6_dst))
837 fl.oif = np->mcast_oif;
838 security_sk_classify_flow(sk, &fl);
840 err = ip6_dst_lookup(sk, &dst, &fl);
844 ipv6_addr_copy(&fl.fl6_dst, final_p);
846 if ((err = __xfrm_lookup(&dst, &fl, sk, 1)) < 0) {
848 err = ip6_dst_blackhole(sk, &dst, &fl);
854 if (ipv6_addr_is_multicast(&fl.fl6_dst))
855 hlimit = np->mcast_hops;
857 hlimit = np->hop_limit;
859 hlimit = dst_metric(dst, RTAX_HOPLIMIT);
861 hlimit = ipv6_get_hoplimit(dst->dev);
870 if (msg->msg_flags&MSG_CONFIRM)
875 err = rawv6_send_hdrinc(sk, msg->msg_iov, len, &fl, (struct rt6_info*)dst, msg->msg_flags);
878 err = ip6_append_data(sk, ip_generic_getfrag, msg->msg_iov,
879 len, 0, hlimit, tclass, opt, &fl, (struct rt6_info*)dst,
883 ip6_flush_pending_frames(sk);
884 else if (!(msg->msg_flags & MSG_MORE))
885 err = rawv6_push_pending_frames(sk, &fl, rp);
891 fl6_sock_release(flowlabel);
892 return err<0?err:len;
895 if (!(msg->msg_flags & MSG_PROBE) || len)
896 goto back_from_confirm;
901 static int rawv6_seticmpfilter(struct sock *sk, int level, int optname,
902 char __user *optval, int optlen)
906 if (optlen > sizeof(struct icmp6_filter))
907 optlen = sizeof(struct icmp6_filter);
908 if (copy_from_user(&raw6_sk(sk)->filter, optval, optlen))
918 static int rawv6_geticmpfilter(struct sock *sk, int level, int optname,
919 char __user *optval, int __user *optlen)
925 if (get_user(len, optlen))
929 if (len > sizeof(struct icmp6_filter))
930 len = sizeof(struct icmp6_filter);
931 if (put_user(len, optlen))
933 if (copy_to_user(optval, &raw6_sk(sk)->filter, len))
944 static int do_rawv6_setsockopt(struct sock *sk, int level, int optname,
945 char __user *optval, int optlen)
947 struct raw6_sock *rp = raw6_sk(sk);
950 if (get_user(val, (int __user *)optval))
955 /* You may get strange result with a positive odd offset;
956 RFC2292bis agrees with me. */
957 if (val > 0 && (val&1))
970 return(-ENOPROTOOPT);
974 static int rawv6_setsockopt(struct sock *sk, int level, int optname,
975 char __user *optval, int optlen)
982 if (inet_sk(sk)->num != IPPROTO_ICMPV6)
984 return rawv6_seticmpfilter(sk, level, optname, optval,
987 if (optname == IPV6_CHECKSUM)
990 return ipv6_setsockopt(sk, level, optname, optval,
994 return do_rawv6_setsockopt(sk, level, optname, optval, optlen);
998 static int compat_rawv6_setsockopt(struct sock *sk, int level, int optname,
999 char __user *optval, int optlen)
1005 if (inet_sk(sk)->num != IPPROTO_ICMPV6)
1007 return rawv6_seticmpfilter(sk, level, optname, optval, optlen);
1009 if (optname == IPV6_CHECKSUM)
1012 return compat_ipv6_setsockopt(sk, level, optname,
1015 return do_rawv6_setsockopt(sk, level, optname, optval, optlen);
1019 static int do_rawv6_getsockopt(struct sock *sk, int level, int optname,
1020 char __user *optval, int __user *optlen)
1022 struct raw6_sock *rp = raw6_sk(sk);
1025 if (get_user(len,optlen))
1030 if (rp->checksum == 0)
1037 return -ENOPROTOOPT;
1040 len = min_t(unsigned int, sizeof(int), len);
1042 if (put_user(len, optlen))
1044 if (copy_to_user(optval,&val,len))
1049 static int rawv6_getsockopt(struct sock *sk, int level, int optname,
1050 char __user *optval, int __user *optlen)
1057 if (inet_sk(sk)->num != IPPROTO_ICMPV6)
1059 return rawv6_geticmpfilter(sk, level, optname, optval,
1062 if (optname == IPV6_CHECKSUM)
1065 return ipv6_getsockopt(sk, level, optname, optval,
1069 return do_rawv6_getsockopt(sk, level, optname, optval, optlen);
1072 #ifdef CONFIG_COMPAT
1073 static int compat_rawv6_getsockopt(struct sock *sk, int level, int optname,
1074 char __user *optval, int __user *optlen)
1080 if (inet_sk(sk)->num != IPPROTO_ICMPV6)
1082 return rawv6_geticmpfilter(sk, level, optname, optval, optlen);
1084 if (optname == IPV6_CHECKSUM)
1087 return compat_ipv6_getsockopt(sk, level, optname,
1090 return do_rawv6_getsockopt(sk, level, optname, optval, optlen);
1094 static int rawv6_ioctl(struct sock *sk, int cmd, unsigned long arg)
1099 int amount = atomic_read(&sk->sk_wmem_alloc);
1100 return put_user(amount, (int __user *)arg);
1104 struct sk_buff *skb;
1107 spin_lock_bh(&sk->sk_receive_queue.lock);
1108 skb = skb_peek(&sk->sk_receive_queue);
1110 amount = skb->tail - skb->transport_header;
1111 spin_unlock_bh(&sk->sk_receive_queue.lock);
1112 return put_user(amount, (int __user *)arg);
1116 return -ENOIOCTLCMD;
1120 static void rawv6_close(struct sock *sk, long timeout)
1122 if (inet_sk(sk)->num == IPPROTO_RAW)
1123 ip6_ra_control(sk, -1, NULL);
1125 sk_common_release(sk);
1128 static int rawv6_init_sk(struct sock *sk)
1130 struct raw6_sock *rp = raw6_sk(sk);
1132 switch (inet_sk(sk)->num) {
1133 case IPPROTO_ICMPV6:
1147 struct proto rawv6_prot = {
1149 .owner = THIS_MODULE,
1150 .close = rawv6_close,
1151 .connect = ip6_datagram_connect,
1152 .disconnect = udp_disconnect,
1153 .ioctl = rawv6_ioctl,
1154 .init = rawv6_init_sk,
1155 .destroy = inet6_destroy_sock,
1156 .setsockopt = rawv6_setsockopt,
1157 .getsockopt = rawv6_getsockopt,
1158 .sendmsg = rawv6_sendmsg,
1159 .recvmsg = rawv6_recvmsg,
1161 .backlog_rcv = rawv6_rcv_skb,
1162 .hash = raw_v6_hash,
1163 .unhash = raw_v6_unhash,
1164 .obj_size = sizeof(struct raw6_sock),
1165 #ifdef CONFIG_COMPAT
1166 .compat_setsockopt = compat_rawv6_setsockopt,
1167 .compat_getsockopt = compat_rawv6_getsockopt,
1171 #ifdef CONFIG_PROC_FS
1172 struct raw6_iter_state {
1176 #define raw6_seq_private(seq) ((struct raw6_iter_state *)(seq)->private)
1178 static struct sock *raw6_get_first(struct seq_file *seq)
1181 struct hlist_node *node;
1182 struct raw6_iter_state* state = raw6_seq_private(seq);
1184 for (state->bucket = 0; state->bucket < RAWV6_HTABLE_SIZE; ++state->bucket)
1185 sk_for_each(sk, node, &raw_v6_htable[state->bucket])
1186 if (sk->sk_family == PF_INET6)
1193 static struct sock *raw6_get_next(struct seq_file *seq, struct sock *sk)
1195 struct raw6_iter_state* state = raw6_seq_private(seq);
1201 } while (sk && sk->sk_family != PF_INET6);
1203 if (!sk && ++state->bucket < RAWV6_HTABLE_SIZE) {
1204 sk = sk_head(&raw_v6_htable[state->bucket]);
1210 static struct sock *raw6_get_idx(struct seq_file *seq, loff_t pos)
1212 struct sock *sk = raw6_get_first(seq);
1214 while (pos && (sk = raw6_get_next(seq, sk)) != NULL)
1216 return pos ? NULL : sk;
1219 static void *raw6_seq_start(struct seq_file *seq, loff_t *pos)
1221 read_lock(&raw_v6_lock);
1222 return *pos ? raw6_get_idx(seq, *pos - 1) : SEQ_START_TOKEN;
1225 static void *raw6_seq_next(struct seq_file *seq, void *v, loff_t *pos)
1229 if (v == SEQ_START_TOKEN)
1230 sk = raw6_get_first(seq);
1232 sk = raw6_get_next(seq, v);
1237 static void raw6_seq_stop(struct seq_file *seq, void *v)
1239 read_unlock(&raw_v6_lock);
1242 static void raw6_sock_seq_show(struct seq_file *seq, struct sock *sp, int i)
1244 struct ipv6_pinfo *np = inet6_sk(sp);
1245 struct in6_addr *dest, *src;
1249 src = &np->rcv_saddr;
1251 srcp = inet_sk(sp)->num;
1253 "%4d: %08X%08X%08X%08X:%04X %08X%08X%08X%08X:%04X "
1254 "%02X %08X:%08X %02X:%08lX %08X %5d %8d %lu %d %p\n",
1256 src->s6_addr32[0], src->s6_addr32[1],
1257 src->s6_addr32[2], src->s6_addr32[3], srcp,
1258 dest->s6_addr32[0], dest->s6_addr32[1],
1259 dest->s6_addr32[2], dest->s6_addr32[3], destp,
1261 atomic_read(&sp->sk_wmem_alloc),
1262 atomic_read(&sp->sk_rmem_alloc),
1266 atomic_read(&sp->sk_refcnt), sp);
1269 static int raw6_seq_show(struct seq_file *seq, void *v)
1271 if (v == SEQ_START_TOKEN)
1276 "st tx_queue rx_queue tr tm->when retrnsmt"
1277 " uid timeout inode\n");
1279 raw6_sock_seq_show(seq, v, raw6_seq_private(seq)->bucket);
1283 static const struct seq_operations raw6_seq_ops = {
1284 .start = raw6_seq_start,
1285 .next = raw6_seq_next,
1286 .stop = raw6_seq_stop,
1287 .show = raw6_seq_show,
1290 static int raw6_seq_open(struct inode *inode, struct file *file)
1292 return seq_open_private(file, &raw6_seq_ops,
1293 sizeof(struct raw6_iter_state));
1296 static const struct file_operations raw6_seq_fops = {
1297 .owner = THIS_MODULE,
1298 .open = raw6_seq_open,
1300 .llseek = seq_lseek,
1301 .release = seq_release_private,
1304 int __init raw6_proc_init(void)
1306 if (!proc_net_fops_create(&init_net, "raw6", S_IRUGO, &raw6_seq_fops))
1311 void raw6_proc_exit(void)
1313 proc_net_remove(&init_net, "raw6");
1315 #endif /* CONFIG_PROC_FS */