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 #define RAWV6_HTABLE_SIZE MAX_INET_PROTOS
65 static struct hlist_head raw_v6_htable[RAWV6_HTABLE_SIZE];
66 static DEFINE_RWLOCK(raw_v6_lock);
68 static void raw_v6_hash(struct sock *sk)
70 struct hlist_head *list = &raw_v6_htable[inet_sk(sk)->num &
71 (RAWV6_HTABLE_SIZE - 1)];
73 write_lock_bh(&raw_v6_lock);
74 sk_add_node(sk, list);
75 sock_prot_inc_use(sk->sk_prot);
76 write_unlock_bh(&raw_v6_lock);
79 static void raw_v6_unhash(struct sock *sk)
81 write_lock_bh(&raw_v6_lock);
82 if (sk_del_node_init(sk))
83 sock_prot_dec_use(sk->sk_prot);
84 write_unlock_bh(&raw_v6_lock);
88 static struct sock *__raw_v6_lookup(struct sock *sk, unsigned short num,
89 struct in6_addr *loc_addr, struct in6_addr *rmt_addr, int dif)
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 static 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 int raw6_local_deliver(struct sk_buff *skb, int nexthdr)
249 raw_sk = sk_head(&raw_v6_htable[nexthdr & (MAX_INET_PROTOS - 1)]);
250 if (raw_sk && !ipv6_raw_deliver(skb, nexthdr))
253 return raw_sk != NULL;
256 /* This cleans up af_inet6 a bit. -DaveM */
257 static int rawv6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
259 struct inet_sock *inet = inet_sk(sk);
260 struct ipv6_pinfo *np = inet6_sk(sk);
261 struct sockaddr_in6 *addr = (struct sockaddr_in6 *) uaddr;
266 if (addr_len < SIN6_LEN_RFC2133)
268 addr_type = ipv6_addr_type(&addr->sin6_addr);
270 /* Raw sockets are IPv6 only */
271 if (addr_type == IPV6_ADDR_MAPPED)
272 return(-EADDRNOTAVAIL);
277 if (sk->sk_state != TCP_CLOSE)
280 /* Check if the address belongs to the host. */
281 if (addr_type != IPV6_ADDR_ANY) {
282 struct net_device *dev = NULL;
284 if (addr_type & IPV6_ADDR_LINKLOCAL) {
285 if (addr_len >= sizeof(struct sockaddr_in6) &&
286 addr->sin6_scope_id) {
287 /* Override any existing binding, if another
288 * one is supplied by user.
290 sk->sk_bound_dev_if = addr->sin6_scope_id;
293 /* Binding to link-local address requires an interface */
294 if (!sk->sk_bound_dev_if)
297 dev = dev_get_by_index(&init_net, sk->sk_bound_dev_if);
304 /* ipv4 addr of the socket is invalid. Only the
305 * unspecified and mapped address have a v4 equivalent.
307 v4addr = LOOPBACK4_IPV6;
308 if (!(addr_type & IPV6_ADDR_MULTICAST)) {
309 err = -EADDRNOTAVAIL;
310 if (!ipv6_chk_addr(&addr->sin6_addr, dev, 0)) {
320 inet->rcv_saddr = inet->saddr = v4addr;
321 ipv6_addr_copy(&np->rcv_saddr, &addr->sin6_addr);
322 if (!(addr_type & IPV6_ADDR_MULTICAST))
323 ipv6_addr_copy(&np->saddr, &addr->sin6_addr);
330 static void rawv6_err(struct sock *sk, struct sk_buff *skb,
331 struct inet6_skb_parm *opt,
332 int type, int code, int offset, __be32 info)
334 struct inet_sock *inet = inet_sk(sk);
335 struct ipv6_pinfo *np = inet6_sk(sk);
339 /* Report error on raw socket, if:
340 1. User requested recverr.
341 2. Socket is connected (otherwise the error indication
342 is useless without recverr and error is hard.
344 if (!np->recverr && sk->sk_state != TCP_ESTABLISHED)
347 harderr = icmpv6_err_convert(type, code, &err);
348 if (type == ICMPV6_PKT_TOOBIG)
349 harderr = (np->pmtudisc == IPV6_PMTUDISC_DO);
352 u8 *payload = skb->data;
355 ipv6_icmp_error(sk, skb, err, 0, ntohl(info), payload);
358 if (np->recverr || harderr) {
360 sk->sk_error_report(sk);
364 void raw6_icmp_error(struct sk_buff *skb, int nexthdr,
365 int type, int code, int inner_offset, __be32 info)
369 struct in6_addr *saddr, *daddr;
371 hash = nexthdr & (RAWV6_HTABLE_SIZE - 1);
373 read_lock(&raw_v6_lock);
374 sk = sk_head(&raw_v6_htable[hash]);
376 saddr = &ipv6_hdr(skb)->saddr;
377 daddr = &ipv6_hdr(skb)->daddr;
379 while ((sk = __raw_v6_lookup(sk, nexthdr, saddr, daddr,
381 rawv6_err(sk, skb, NULL, type, code,
386 read_unlock(&raw_v6_lock);
389 static inline int rawv6_rcv_skb(struct sock * sk, struct sk_buff * skb)
391 if ((raw6_sk(sk)->checksum || sk->sk_filter) &&
392 skb_checksum_complete(skb)) {
393 atomic_inc(&sk->sk_drops);
398 /* Charge it to the socket. */
399 if (sock_queue_rcv_skb(sk,skb)<0) {
400 atomic_inc(&sk->sk_drops);
409 * This is next to useless...
410 * if we demultiplex in network layer we don't need the extra call
411 * just to queue the skb...
412 * maybe we could have the network decide upon a hint if it
413 * should call raw_rcv for demultiplexing
415 int rawv6_rcv(struct sock *sk, struct sk_buff *skb)
417 struct inet_sock *inet = inet_sk(sk);
418 struct raw6_sock *rp = raw6_sk(sk);
420 if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb)) {
421 atomic_inc(&sk->sk_drops);
427 skb->ip_summed = CHECKSUM_UNNECESSARY;
429 if (skb->ip_summed == CHECKSUM_COMPLETE) {
430 skb_postpull_rcsum(skb, skb_network_header(skb),
431 skb_network_header_len(skb));
432 if (!csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
433 &ipv6_hdr(skb)->daddr,
434 skb->len, inet->num, skb->csum))
435 skb->ip_summed = CHECKSUM_UNNECESSARY;
437 if (!skb_csum_unnecessary(skb))
438 skb->csum = ~csum_unfold(csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
439 &ipv6_hdr(skb)->daddr,
444 if (skb_checksum_complete(skb)) {
445 atomic_inc(&sk->sk_drops);
451 rawv6_rcv_skb(sk, skb);
457 * This should be easy, if there is something there
458 * we return it, otherwise we block.
461 static int rawv6_recvmsg(struct kiocb *iocb, struct sock *sk,
462 struct msghdr *msg, size_t len,
463 int noblock, int flags, int *addr_len)
465 struct ipv6_pinfo *np = inet6_sk(sk);
466 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)msg->msg_name;
475 *addr_len=sizeof(*sin6);
477 if (flags & MSG_ERRQUEUE)
478 return ipv6_recv_error(sk, msg, len);
480 skb = skb_recv_datagram(sk, flags, noblock, &err);
487 msg->msg_flags |= MSG_TRUNC;
490 if (skb_csum_unnecessary(skb)) {
491 err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
492 } else if (msg->msg_flags&MSG_TRUNC) {
493 if (__skb_checksum_complete(skb))
495 err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
497 err = skb_copy_and_csum_datagram_iovec(skb, 0, msg->msg_iov);
504 /* Copy the address. */
506 sin6->sin6_family = AF_INET6;
508 ipv6_addr_copy(&sin6->sin6_addr, &ipv6_hdr(skb)->saddr);
509 sin6->sin6_flowinfo = 0;
510 sin6->sin6_scope_id = 0;
511 if (ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL)
512 sin6->sin6_scope_id = IP6CB(skb)->iif;
515 sock_recv_timestamp(msg, sk, skb);
518 datagram_recv_ctl(sk, msg, skb);
521 if (flags & MSG_TRUNC)
525 skb_free_datagram(sk, skb);
530 skb_kill_datagram(sk, skb, flags);
532 /* Error for blocking case is chosen to masquerade
533 as some normal condition.
535 err = (flags&MSG_DONTWAIT) ? -EAGAIN : -EHOSTUNREACH;
536 atomic_inc(&sk->sk_drops);
540 static int rawv6_push_pending_frames(struct sock *sk, struct flowi *fl,
541 struct raw6_sock *rp)
554 if ((skb = skb_peek(&sk->sk_write_queue)) == NULL)
558 total_len = inet_sk(sk)->cork.length - (skb_network_header(skb) -
560 if (offset >= total_len - 1) {
562 ip6_flush_pending_frames(sk);
566 /* should be check HW csum miyazawa */
567 if (skb_queue_len(&sk->sk_write_queue) == 1) {
569 * Only one fragment on the socket.
571 tmp_csum = skb->csum;
573 struct sk_buff *csum_skb = NULL;
576 skb_queue_walk(&sk->sk_write_queue, skb) {
577 tmp_csum = csum_add(tmp_csum, skb->csum);
582 len = skb->len - skb_transport_offset(skb);
594 offset += skb_transport_offset(skb);
595 if (skb_copy_bits(skb, offset, &csum, 2))
598 /* in case cksum was not initialized */
600 tmp_csum = csum_sub(tmp_csum, csum_unfold(csum));
602 csum = csum_ipv6_magic(&fl->fl6_src,
604 total_len, fl->proto, tmp_csum);
606 if (csum == 0 && fl->proto == IPPROTO_UDP)
607 csum = CSUM_MANGLED_0;
609 if (skb_store_bits(skb, offset, &csum, 2))
613 err = ip6_push_pending_frames(sk);
618 static int rawv6_send_hdrinc(struct sock *sk, void *from, int length,
619 struct flowi *fl, struct rt6_info *rt,
622 struct ipv6_pinfo *np = inet6_sk(sk);
628 if (length > rt->u.dst.dev->mtu) {
629 ipv6_local_error(sk, EMSGSIZE, fl, rt->u.dst.dev->mtu);
635 hh_len = LL_RESERVED_SPACE(rt->u.dst.dev);
637 skb = sock_alloc_send_skb(sk, length+hh_len+15,
638 flags&MSG_DONTWAIT, &err);
641 skb_reserve(skb, hh_len);
643 skb->priority = sk->sk_priority;
644 skb->dst = dst_clone(&rt->u.dst);
646 skb_put(skb, length);
647 skb_reset_network_header(skb);
650 skb->ip_summed = CHECKSUM_NONE;
652 skb->transport_header = skb->network_header;
653 err = memcpy_fromiovecend((void *)iph, from, 0, length);
657 IP6_INC_STATS(rt->rt6i_idev, IPSTATS_MIB_OUTREQUESTS);
658 err = NF_HOOK(PF_INET6, NF_INET_LOCAL_OUT, skb, NULL, rt->u.dst.dev,
661 err = np->recverr ? net_xmit_errno(err) : 0;
671 IP6_INC_STATS(rt->rt6i_idev, IPSTATS_MIB_OUTDISCARDS);
675 static int rawv6_probe_proto_opt(struct flowi *fl, struct msghdr *msg)
678 u8 __user *type = NULL;
679 u8 __user *code = NULL;
687 for (i = 0; i < msg->msg_iovlen; i++) {
688 iov = &msg->msg_iov[i];
694 /* check if one-byte field is readable or not. */
695 if (iov->iov_base && iov->iov_len < 1)
699 type = iov->iov_base;
700 /* check if code field is readable or not. */
701 if (iov->iov_len > 1)
704 code = iov->iov_base;
707 if (get_user(fl->fl_icmp_type, type) ||
708 get_user(fl->fl_icmp_code, code))
714 if (iov->iov_base && iov->iov_len < 1)
716 /* check if type field is readable or not. */
717 if (iov->iov_len > 2 - len) {
718 u8 __user *p = iov->iov_base;
719 if (get_user(fl->fl_mh_type, &p[2 - len]))
736 static int rawv6_sendmsg(struct kiocb *iocb, struct sock *sk,
737 struct msghdr *msg, size_t len)
739 struct ipv6_txoptions opt_space;
740 struct sockaddr_in6 * sin6 = (struct sockaddr_in6 *) msg->msg_name;
741 struct in6_addr *daddr, *final_p = NULL, final;
742 struct inet_sock *inet = inet_sk(sk);
743 struct ipv6_pinfo *np = inet6_sk(sk);
744 struct raw6_sock *rp = raw6_sk(sk);
745 struct ipv6_txoptions *opt = NULL;
746 struct ip6_flowlabel *flowlabel = NULL;
747 struct dst_entry *dst = NULL;
749 int addr_len = msg->msg_namelen;
755 /* Rough check on arithmetic overflow,
756 better check is made in ip6_append_data().
761 /* Mirror BSD error message compatibility */
762 if (msg->msg_flags & MSG_OOB)
766 * Get and verify the address.
768 memset(&fl, 0, sizeof(fl));
771 if (addr_len < SIN6_LEN_RFC2133)
774 if (sin6->sin6_family && sin6->sin6_family != AF_INET6)
775 return(-EAFNOSUPPORT);
777 /* port is the proto value [0..255] carried in nexthdr */
778 proto = ntohs(sin6->sin6_port);
782 else if (proto != inet->num)
788 daddr = &sin6->sin6_addr;
790 fl.fl6_flowlabel = sin6->sin6_flowinfo&IPV6_FLOWINFO_MASK;
791 if (fl.fl6_flowlabel&IPV6_FLOWLABEL_MASK) {
792 flowlabel = fl6_sock_lookup(sk, fl.fl6_flowlabel);
793 if (flowlabel == NULL)
795 daddr = &flowlabel->dst;
800 * Otherwise it will be difficult to maintain
803 if (sk->sk_state == TCP_ESTABLISHED &&
804 ipv6_addr_equal(daddr, &np->daddr))
807 if (addr_len >= sizeof(struct sockaddr_in6) &&
808 sin6->sin6_scope_id &&
809 ipv6_addr_type(daddr)&IPV6_ADDR_LINKLOCAL)
810 fl.oif = sin6->sin6_scope_id;
812 if (sk->sk_state != TCP_ESTABLISHED)
813 return -EDESTADDRREQ;
817 fl.fl6_flowlabel = np->flow_label;
820 if (ipv6_addr_any(daddr)) {
822 * unspecified destination address
823 * treated as error... is this correct ?
825 fl6_sock_release(flowlabel);
830 fl.oif = sk->sk_bound_dev_if;
832 if (msg->msg_controllen) {
834 memset(opt, 0, sizeof(struct ipv6_txoptions));
835 opt->tot_len = sizeof(struct ipv6_txoptions);
837 err = datagram_send_ctl(msg, &fl, opt, &hlimit, &tclass);
839 fl6_sock_release(flowlabel);
842 if ((fl.fl6_flowlabel&IPV6_FLOWLABEL_MASK) && !flowlabel) {
843 flowlabel = fl6_sock_lookup(sk, fl.fl6_flowlabel);
844 if (flowlabel == NULL)
847 if (!(opt->opt_nflen|opt->opt_flen))
853 opt = fl6_merge_options(&opt_space, flowlabel, opt);
854 opt = ipv6_fixup_options(&opt_space, opt);
857 err = rawv6_probe_proto_opt(&fl, msg);
861 ipv6_addr_copy(&fl.fl6_dst, daddr);
862 if (ipv6_addr_any(&fl.fl6_src) && !ipv6_addr_any(&np->saddr))
863 ipv6_addr_copy(&fl.fl6_src, &np->saddr);
865 /* merge ip6_build_xmit from ip6_output */
866 if (opt && opt->srcrt) {
867 struct rt0_hdr *rt0 = (struct rt0_hdr *) opt->srcrt;
868 ipv6_addr_copy(&final, &fl.fl6_dst);
869 ipv6_addr_copy(&fl.fl6_dst, rt0->addr);
873 if (!fl.oif && ipv6_addr_is_multicast(&fl.fl6_dst))
874 fl.oif = np->mcast_oif;
875 security_sk_classify_flow(sk, &fl);
877 err = ip6_dst_lookup(sk, &dst, &fl);
881 ipv6_addr_copy(&fl.fl6_dst, final_p);
883 if ((err = __xfrm_lookup(&dst, &fl, sk, 1)) < 0) {
885 err = ip6_dst_blackhole(sk, &dst, &fl);
891 if (ipv6_addr_is_multicast(&fl.fl6_dst))
892 hlimit = np->mcast_hops;
894 hlimit = np->hop_limit;
896 hlimit = dst_metric(dst, RTAX_HOPLIMIT);
898 hlimit = ipv6_get_hoplimit(dst->dev);
907 if (msg->msg_flags&MSG_CONFIRM)
912 err = rawv6_send_hdrinc(sk, msg->msg_iov, len, &fl, (struct rt6_info*)dst, msg->msg_flags);
915 err = ip6_append_data(sk, ip_generic_getfrag, msg->msg_iov,
916 len, 0, hlimit, tclass, opt, &fl, (struct rt6_info*)dst,
920 ip6_flush_pending_frames(sk);
921 else if (!(msg->msg_flags & MSG_MORE))
922 err = rawv6_push_pending_frames(sk, &fl, rp);
928 fl6_sock_release(flowlabel);
929 return err<0?err:len;
932 if (!(msg->msg_flags & MSG_PROBE) || len)
933 goto back_from_confirm;
938 static int rawv6_seticmpfilter(struct sock *sk, int level, int optname,
939 char __user *optval, int optlen)
943 if (optlen > sizeof(struct icmp6_filter))
944 optlen = sizeof(struct icmp6_filter);
945 if (copy_from_user(&raw6_sk(sk)->filter, optval, optlen))
955 static int rawv6_geticmpfilter(struct sock *sk, int level, int optname,
956 char __user *optval, int __user *optlen)
962 if (get_user(len, optlen))
966 if (len > sizeof(struct icmp6_filter))
967 len = sizeof(struct icmp6_filter);
968 if (put_user(len, optlen))
970 if (copy_to_user(optval, &raw6_sk(sk)->filter, len))
981 static int do_rawv6_setsockopt(struct sock *sk, int level, int optname,
982 char __user *optval, int optlen)
984 struct raw6_sock *rp = raw6_sk(sk);
987 if (get_user(val, (int __user *)optval))
992 /* You may get strange result with a positive odd offset;
993 RFC2292bis agrees with me. */
994 if (val > 0 && (val&1))
1007 return(-ENOPROTOOPT);
1011 static int rawv6_setsockopt(struct sock *sk, int level, int optname,
1012 char __user *optval, int optlen)
1019 if (inet_sk(sk)->num != IPPROTO_ICMPV6)
1021 return rawv6_seticmpfilter(sk, level, optname, optval,
1024 if (optname == IPV6_CHECKSUM)
1027 return ipv6_setsockopt(sk, level, optname, optval,
1031 return do_rawv6_setsockopt(sk, level, optname, optval, optlen);
1034 #ifdef CONFIG_COMPAT
1035 static int compat_rawv6_setsockopt(struct sock *sk, int level, int optname,
1036 char __user *optval, int optlen)
1042 if (inet_sk(sk)->num != IPPROTO_ICMPV6)
1044 return rawv6_seticmpfilter(sk, level, optname, optval, optlen);
1046 if (optname == IPV6_CHECKSUM)
1049 return compat_ipv6_setsockopt(sk, level, optname,
1052 return do_rawv6_setsockopt(sk, level, optname, optval, optlen);
1056 static int do_rawv6_getsockopt(struct sock *sk, int level, int optname,
1057 char __user *optval, int __user *optlen)
1059 struct raw6_sock *rp = raw6_sk(sk);
1062 if (get_user(len,optlen))
1067 if (rp->checksum == 0)
1074 return -ENOPROTOOPT;
1077 len = min_t(unsigned int, sizeof(int), len);
1079 if (put_user(len, optlen))
1081 if (copy_to_user(optval,&val,len))
1086 static int rawv6_getsockopt(struct sock *sk, int level, int optname,
1087 char __user *optval, int __user *optlen)
1094 if (inet_sk(sk)->num != IPPROTO_ICMPV6)
1096 return rawv6_geticmpfilter(sk, level, optname, optval,
1099 if (optname == IPV6_CHECKSUM)
1102 return ipv6_getsockopt(sk, level, optname, optval,
1106 return do_rawv6_getsockopt(sk, level, optname, optval, optlen);
1109 #ifdef CONFIG_COMPAT
1110 static int compat_rawv6_getsockopt(struct sock *sk, int level, int optname,
1111 char __user *optval, int __user *optlen)
1117 if (inet_sk(sk)->num != IPPROTO_ICMPV6)
1119 return rawv6_geticmpfilter(sk, level, optname, optval, optlen);
1121 if (optname == IPV6_CHECKSUM)
1124 return compat_ipv6_getsockopt(sk, level, optname,
1127 return do_rawv6_getsockopt(sk, level, optname, optval, optlen);
1131 static int rawv6_ioctl(struct sock *sk, int cmd, unsigned long arg)
1136 int amount = atomic_read(&sk->sk_wmem_alloc);
1137 return put_user(amount, (int __user *)arg);
1141 struct sk_buff *skb;
1144 spin_lock_bh(&sk->sk_receive_queue.lock);
1145 skb = skb_peek(&sk->sk_receive_queue);
1147 amount = skb->tail - skb->transport_header;
1148 spin_unlock_bh(&sk->sk_receive_queue.lock);
1149 return put_user(amount, (int __user *)arg);
1153 return -ENOIOCTLCMD;
1157 static void rawv6_close(struct sock *sk, long timeout)
1159 if (inet_sk(sk)->num == IPPROTO_RAW)
1160 ip6_ra_control(sk, -1, NULL);
1162 sk_common_release(sk);
1165 static int rawv6_init_sk(struct sock *sk)
1167 struct raw6_sock *rp = raw6_sk(sk);
1169 switch (inet_sk(sk)->num) {
1170 case IPPROTO_ICMPV6:
1184 DEFINE_PROTO_INUSE(rawv6)
1186 struct proto rawv6_prot = {
1188 .owner = THIS_MODULE,
1189 .close = rawv6_close,
1190 .connect = ip6_datagram_connect,
1191 .disconnect = udp_disconnect,
1192 .ioctl = rawv6_ioctl,
1193 .init = rawv6_init_sk,
1194 .destroy = inet6_destroy_sock,
1195 .setsockopt = rawv6_setsockopt,
1196 .getsockopt = rawv6_getsockopt,
1197 .sendmsg = rawv6_sendmsg,
1198 .recvmsg = rawv6_recvmsg,
1200 .backlog_rcv = rawv6_rcv_skb,
1201 .hash = raw_v6_hash,
1202 .unhash = raw_v6_unhash,
1203 .obj_size = sizeof(struct raw6_sock),
1204 #ifdef CONFIG_COMPAT
1205 .compat_setsockopt = compat_rawv6_setsockopt,
1206 .compat_getsockopt = compat_rawv6_getsockopt,
1208 REF_PROTO_INUSE(rawv6)
1211 #ifdef CONFIG_PROC_FS
1212 struct raw6_iter_state {
1216 #define raw6_seq_private(seq) ((struct raw6_iter_state *)(seq)->private)
1218 static struct sock *raw6_get_first(struct seq_file *seq)
1221 struct hlist_node *node;
1222 struct raw6_iter_state* state = raw6_seq_private(seq);
1224 for (state->bucket = 0; state->bucket < RAWV6_HTABLE_SIZE; ++state->bucket)
1225 sk_for_each(sk, node, &raw_v6_htable[state->bucket])
1226 if (sk->sk_family == PF_INET6)
1233 static struct sock *raw6_get_next(struct seq_file *seq, struct sock *sk)
1235 struct raw6_iter_state* state = raw6_seq_private(seq);
1241 } while (sk && sk->sk_family != PF_INET6);
1243 if (!sk && ++state->bucket < RAWV6_HTABLE_SIZE) {
1244 sk = sk_head(&raw_v6_htable[state->bucket]);
1250 static struct sock *raw6_get_idx(struct seq_file *seq, loff_t pos)
1252 struct sock *sk = raw6_get_first(seq);
1254 while (pos && (sk = raw6_get_next(seq, sk)) != NULL)
1256 return pos ? NULL : sk;
1259 static void *raw6_seq_start(struct seq_file *seq, loff_t *pos)
1261 read_lock(&raw_v6_lock);
1262 return *pos ? raw6_get_idx(seq, *pos - 1) : SEQ_START_TOKEN;
1265 static void *raw6_seq_next(struct seq_file *seq, void *v, loff_t *pos)
1269 if (v == SEQ_START_TOKEN)
1270 sk = raw6_get_first(seq);
1272 sk = raw6_get_next(seq, v);
1277 static void raw6_seq_stop(struct seq_file *seq, void *v)
1279 read_unlock(&raw_v6_lock);
1282 static void raw6_sock_seq_show(struct seq_file *seq, struct sock *sp, int i)
1284 struct ipv6_pinfo *np = inet6_sk(sp);
1285 struct in6_addr *dest, *src;
1289 src = &np->rcv_saddr;
1291 srcp = inet_sk(sp)->num;
1293 "%4d: %08X%08X%08X%08X:%04X %08X%08X%08X%08X:%04X "
1294 "%02X %08X:%08X %02X:%08lX %08X %5d %8d %lu %d %p %d\n",
1296 src->s6_addr32[0], src->s6_addr32[1],
1297 src->s6_addr32[2], src->s6_addr32[3], srcp,
1298 dest->s6_addr32[0], dest->s6_addr32[1],
1299 dest->s6_addr32[2], dest->s6_addr32[3], destp,
1301 atomic_read(&sp->sk_wmem_alloc),
1302 atomic_read(&sp->sk_rmem_alloc),
1306 atomic_read(&sp->sk_refcnt), sp, atomic_read(&sp->sk_drops));
1309 static int raw6_seq_show(struct seq_file *seq, void *v)
1311 if (v == SEQ_START_TOKEN)
1316 "st tx_queue rx_queue tr tm->when retrnsmt"
1317 " uid timeout inode drops\n");
1319 raw6_sock_seq_show(seq, v, raw6_seq_private(seq)->bucket);
1323 static const struct seq_operations raw6_seq_ops = {
1324 .start = raw6_seq_start,
1325 .next = raw6_seq_next,
1326 .stop = raw6_seq_stop,
1327 .show = raw6_seq_show,
1330 static int raw6_seq_open(struct inode *inode, struct file *file)
1332 return seq_open_private(file, &raw6_seq_ops,
1333 sizeof(struct raw6_iter_state));
1336 static const struct file_operations raw6_seq_fops = {
1337 .owner = THIS_MODULE,
1338 .open = raw6_seq_open,
1340 .llseek = seq_lseek,
1341 .release = seq_release_private,
1344 int __init raw6_proc_init(void)
1346 if (!proc_net_fops_create(&init_net, "raw6", S_IRUGO, &raw6_seq_fops))
1351 void raw6_proc_exit(void)
1353 proc_net_remove(&init_net, "raw6");
1355 #endif /* CONFIG_PROC_FS */