3 * Linux INET6 implementation
6 * Pedro Roque <roque@di.fc.ul.pt>
8 * Adapted from linux/net/ipv4/raw.c
11 * Hideaki YOSHIFUJI : sin6_scope_id support
12 * YOSHIFUJI,H.@USAGI : raw checksum (RFC2292(bis) compliance)
13 * Kazunori MIYAZAWA @USAGI: change process style to use ip6_append_data
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License
17 * as published by the Free Software Foundation; either version
18 * 2 of the License, or (at your option) any later version.
21 #include <linux/errno.h>
22 #include <linux/types.h>
23 #include <linux/socket.h>
24 #include <linux/slab.h>
25 #include <linux/sockios.h>
26 #include <linux/net.h>
27 #include <linux/in6.h>
28 #include <linux/netdevice.h>
29 #include <linux/if_arp.h>
30 #include <linux/icmpv6.h>
31 #include <linux/netfilter.h>
32 #include <linux/netfilter_ipv6.h>
33 #include <linux/skbuff.h>
34 #include <linux/compat.h>
35 #include <asm/uaccess.h>
36 #include <asm/ioctls.h>
38 #include <net/net_namespace.h>
44 #include <net/ndisc.h>
45 #include <net/protocol.h>
46 #include <net/ip6_route.h>
47 #include <net/ip6_checksum.h>
48 #include <net/addrconf.h>
49 #include <net/transp_v6.h>
51 #include <net/inet_common.h>
52 #include <net/tcp_states.h>
53 #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
56 #include <linux/mroute6.h>
59 #include <net/rawv6.h>
62 #include <linux/proc_fs.h>
63 #include <linux/seq_file.h>
65 static struct raw_hashinfo raw_v6_hashinfo = {
66 .lock = __RW_LOCK_UNLOCKED(raw_v6_hashinfo.lock),
69 static struct sock *__raw_v6_lookup(struct net *net, struct sock *sk,
70 unsigned short num, struct in6_addr *loc_addr,
71 struct in6_addr *rmt_addr, int dif)
73 struct hlist_node *node;
74 int is_multicast = ipv6_addr_is_multicast(loc_addr);
76 sk_for_each_from(sk, node)
77 if (inet_sk(sk)->inet_num == num) {
78 struct ipv6_pinfo *np = inet6_sk(sk);
80 if (!net_eq(sock_net(sk), net))
83 if (!ipv6_addr_any(&np->daddr) &&
84 !ipv6_addr_equal(&np->daddr, rmt_addr))
87 if (sk->sk_bound_dev_if && sk->sk_bound_dev_if != dif)
90 if (!ipv6_addr_any(&np->rcv_saddr)) {
91 if (ipv6_addr_equal(&np->rcv_saddr, loc_addr))
94 inet6_mc_check(sk, loc_addr, rmt_addr))
109 static __inline__ int icmpv6_filter(struct sock *sk, struct sk_buff *skb)
111 struct icmp6hdr *icmph;
112 struct raw6_sock *rp = raw6_sk(sk);
114 if (pskb_may_pull(skb, sizeof(struct icmp6hdr))) {
115 __u32 *data = &rp->filter.data[0];
118 icmph = (struct icmp6hdr *) skb->data;
119 bit_nr = icmph->icmp6_type;
121 return (data[bit_nr >> 5] & (1 << (bit_nr & 31))) != 0;
126 #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
127 static int (*mh_filter)(struct sock *sock, struct sk_buff *skb);
129 int rawv6_mh_filter_register(int (*filter)(struct sock *sock,
130 struct sk_buff *skb))
132 rcu_assign_pointer(mh_filter, filter);
135 EXPORT_SYMBOL(rawv6_mh_filter_register);
137 int rawv6_mh_filter_unregister(int (*filter)(struct sock *sock,
138 struct sk_buff *skb))
140 rcu_assign_pointer(mh_filter, NULL);
144 EXPORT_SYMBOL(rawv6_mh_filter_unregister);
149 * demultiplex raw sockets.
150 * (should consider queueing the skb in the sock receive_queue
151 * without calling rawv6.c)
153 * Caller owns SKB so we must make clones.
155 static int ipv6_raw_deliver(struct sk_buff *skb, int nexthdr)
157 struct in6_addr *saddr;
158 struct in6_addr *daddr;
164 saddr = &ipv6_hdr(skb)->saddr;
167 hash = nexthdr & (MAX_INET_PROTOS - 1);
169 read_lock(&raw_v6_hashinfo.lock);
170 sk = sk_head(&raw_v6_hashinfo.ht[hash]);
175 net = dev_net(skb->dev);
176 sk = __raw_v6_lookup(net, sk, nexthdr, daddr, saddr, IP6CB(skb)->iif);
184 filtered = icmpv6_filter(sk, skb);
187 #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
190 /* XXX: To validate MH only once for each packet,
191 * this is placed here. It should be after checking
192 * xfrm policy, however it doesn't. The checking xfrm
193 * policy is placed in rawv6_rcv() because it is
194 * required for each socket.
196 int (*filter)(struct sock *sock, struct sk_buff *skb);
198 filter = rcu_dereference(mh_filter);
199 filtered = filter ? filter(sk, skb) : 0;
211 struct sk_buff *clone = skb_clone(skb, GFP_ATOMIC);
213 /* Not releasing hash table! */
216 rawv6_rcv(sk, clone);
219 sk = __raw_v6_lookup(net, sk_next(sk), nexthdr, daddr, saddr,
223 read_unlock(&raw_v6_hashinfo.lock);
227 int raw6_local_deliver(struct sk_buff *skb, int nexthdr)
231 raw_sk = sk_head(&raw_v6_hashinfo.ht[nexthdr & (MAX_INET_PROTOS - 1)]);
232 if (raw_sk && !ipv6_raw_deliver(skb, nexthdr))
235 return raw_sk != NULL;
238 /* This cleans up af_inet6 a bit. -DaveM */
239 static int rawv6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
241 struct inet_sock *inet = inet_sk(sk);
242 struct ipv6_pinfo *np = inet6_sk(sk);
243 struct sockaddr_in6 *addr = (struct sockaddr_in6 *) uaddr;
248 if (addr_len < SIN6_LEN_RFC2133)
250 addr_type = ipv6_addr_type(&addr->sin6_addr);
252 /* Raw sockets are IPv6 only */
253 if (addr_type == IPV6_ADDR_MAPPED)
254 return -EADDRNOTAVAIL;
259 if (sk->sk_state != TCP_CLOSE)
263 /* Check if the address belongs to the host. */
264 if (addr_type != IPV6_ADDR_ANY) {
265 struct net_device *dev = NULL;
267 if (addr_type & IPV6_ADDR_LINKLOCAL) {
268 if (addr_len >= sizeof(struct sockaddr_in6) &&
269 addr->sin6_scope_id) {
270 /* Override any existing binding, if another
271 * one is supplied by user.
273 sk->sk_bound_dev_if = addr->sin6_scope_id;
276 /* Binding to link-local address requires an interface */
277 if (!sk->sk_bound_dev_if)
281 dev = dev_get_by_index_rcu(sock_net(sk),
282 sk->sk_bound_dev_if);
287 /* ipv4 addr of the socket is invalid. Only the
288 * unspecified and mapped address have a v4 equivalent.
290 v4addr = LOOPBACK4_IPV6;
291 if (!(addr_type & IPV6_ADDR_MULTICAST)) {
292 err = -EADDRNOTAVAIL;
293 if (!ipv6_chk_addr(sock_net(sk), &addr->sin6_addr,
300 inet->inet_rcv_saddr = inet->inet_saddr = v4addr;
301 ipv6_addr_copy(&np->rcv_saddr, &addr->sin6_addr);
302 if (!(addr_type & IPV6_ADDR_MULTICAST))
303 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 u8 type, u8 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 u8 type, u8 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 /* Note: ipv6_hdr(skb) != skb->data */
360 struct ipv6hdr *ip6h = (struct ipv6hdr *)skb->data;
361 saddr = &ip6h->saddr;
362 daddr = &ip6h->daddr;
363 net = dev_net(skb->dev);
365 while ((sk = __raw_v6_lookup(net, sk, nexthdr, saddr, daddr,
367 rawv6_err(sk, skb, NULL, type, code,
372 read_unlock(&raw_v6_hashinfo.lock);
375 static inline int rawv6_rcv_skb(struct sock * sk, struct sk_buff * skb)
377 if ((raw6_sk(sk)->checksum || rcu_dereference_raw(sk->sk_filter)) &&
378 skb_checksum_complete(skb)) {
379 atomic_inc(&sk->sk_drops);
384 /* Charge it to the socket. */
385 if (ip_queue_rcv_skb(sk, skb) < 0) {
394 * This is next to useless...
395 * if we demultiplex in network layer we don't need the extra call
396 * just to queue the skb...
397 * maybe we could have the network decide upon a hint if it
398 * should call raw_rcv for demultiplexing
400 int rawv6_rcv(struct sock *sk, struct sk_buff *skb)
402 struct inet_sock *inet = inet_sk(sk);
403 struct raw6_sock *rp = raw6_sk(sk);
405 if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb)) {
406 atomic_inc(&sk->sk_drops);
412 skb->ip_summed = CHECKSUM_UNNECESSARY;
414 if (skb->ip_summed == CHECKSUM_COMPLETE) {
415 skb_postpull_rcsum(skb, skb_network_header(skb),
416 skb_network_header_len(skb));
417 if (!csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
418 &ipv6_hdr(skb)->daddr,
419 skb->len, inet->inet_num, skb->csum))
420 skb->ip_summed = CHECKSUM_UNNECESSARY;
422 if (!skb_csum_unnecessary(skb))
423 skb->csum = ~csum_unfold(csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
424 &ipv6_hdr(skb)->daddr,
429 if (skb_checksum_complete(skb)) {
430 atomic_inc(&sk->sk_drops);
436 rawv6_rcv_skb(sk, skb);
442 * This should be easy, if there is something there
443 * we return it, otherwise we block.
446 static int rawv6_recvmsg(struct kiocb *iocb, struct sock *sk,
447 struct msghdr *msg, size_t len,
448 int noblock, int flags, int *addr_len)
450 struct ipv6_pinfo *np = inet6_sk(sk);
451 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)msg->msg_name;
460 *addr_len=sizeof(*sin6);
462 if (flags & MSG_ERRQUEUE)
463 return ipv6_recv_error(sk, msg, len);
465 if (np->rxpmtu && np->rxopt.bits.rxpmtu)
466 return ipv6_recv_rxpmtu(sk, msg, len);
468 skb = skb_recv_datagram(sk, flags, noblock, &err);
475 msg->msg_flags |= MSG_TRUNC;
478 if (skb_csum_unnecessary(skb)) {
479 err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
480 } else if (msg->msg_flags&MSG_TRUNC) {
481 if (__skb_checksum_complete(skb))
483 err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
485 err = skb_copy_and_csum_datagram_iovec(skb, 0, msg->msg_iov);
492 /* Copy the address. */
494 sin6->sin6_family = AF_INET6;
496 ipv6_addr_copy(&sin6->sin6_addr, &ipv6_hdr(skb)->saddr);
497 sin6->sin6_flowinfo = 0;
498 sin6->sin6_scope_id = 0;
499 if (ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL)
500 sin6->sin6_scope_id = IP6CB(skb)->iif;
503 sock_recv_ts_and_drops(msg, sk, skb);
506 datagram_recv_ctl(sk, msg, skb);
509 if (flags & MSG_TRUNC)
513 skb_free_datagram(sk, skb);
518 skb_kill_datagram(sk, skb, flags);
520 /* Error for blocking case is chosen to masquerade
521 as some normal condition.
523 err = (flags&MSG_DONTWAIT) ? -EAGAIN : -EHOSTUNREACH;
527 static int rawv6_push_pending_frames(struct sock *sk, struct flowi *fl,
528 struct raw6_sock *rp)
541 if ((skb = skb_peek(&sk->sk_write_queue)) == NULL)
545 total_len = inet_sk(sk)->cork.length - (skb_network_header(skb) -
547 if (offset >= total_len - 1) {
549 ip6_flush_pending_frames(sk);
553 /* should be check HW csum miyazawa */
554 if (skb_queue_len(&sk->sk_write_queue) == 1) {
556 * Only one fragment on the socket.
558 tmp_csum = skb->csum;
560 struct sk_buff *csum_skb = NULL;
563 skb_queue_walk(&sk->sk_write_queue, skb) {
564 tmp_csum = csum_add(tmp_csum, skb->csum);
569 len = skb->len - skb_transport_offset(skb);
581 offset += skb_transport_offset(skb);
582 if (skb_copy_bits(skb, offset, &csum, 2))
585 /* in case cksum was not initialized */
587 tmp_csum = csum_sub(tmp_csum, csum_unfold(csum));
589 csum = csum_ipv6_magic(&fl->fl6_src,
591 total_len, fl->proto, tmp_csum);
593 if (csum == 0 && fl->proto == IPPROTO_UDP)
594 csum = CSUM_MANGLED_0;
596 if (skb_store_bits(skb, offset, &csum, 2))
600 err = ip6_push_pending_frames(sk);
605 static int rawv6_send_hdrinc(struct sock *sk, void *from, int length,
606 struct flowi *fl, struct dst_entry **dstp,
609 struct ipv6_pinfo *np = inet6_sk(sk);
613 struct rt6_info *rt = (struct rt6_info *)*dstp;
615 if (length > rt->dst.dev->mtu) {
616 ipv6_local_error(sk, EMSGSIZE, fl, rt->dst.dev->mtu);
622 skb = sock_alloc_send_skb(sk,
623 length + LL_ALLOCATED_SPACE(rt->dst.dev) + 15,
624 flags & MSG_DONTWAIT, &err);
627 skb_reserve(skb, LL_RESERVED_SPACE(rt->dst.dev));
629 skb->priority = sk->sk_priority;
630 skb->mark = sk->sk_mark;
631 skb_dst_set(skb, &rt->dst);
634 skb_put(skb, length);
635 skb_reset_network_header(skb);
638 skb->ip_summed = CHECKSUM_NONE;
640 skb->transport_header = skb->network_header;
641 err = memcpy_fromiovecend((void *)iph, from, 0, length);
645 IP6_UPD_PO_STATS(sock_net(sk), rt->rt6i_idev, IPSTATS_MIB_OUT, skb->len);
646 err = NF_HOOK(NFPROTO_IPV6, NF_INET_LOCAL_OUT, skb, NULL,
647 rt->dst.dev, dst_output);
649 err = net_xmit_errno(err);
659 IP6_INC_STATS(sock_net(sk), rt->rt6i_idev, IPSTATS_MIB_OUTDISCARDS);
660 if (err == -ENOBUFS && !np->recverr)
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, 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;
746 /* Rough check on arithmetic overflow,
747 better check is made in ip6_append_data().
752 /* Mirror BSD error message compatibility */
753 if (msg->msg_flags & MSG_OOB)
757 * Get and verify the address.
759 memset(&fl, 0, sizeof(fl));
761 fl.mark = sk->sk_mark;
764 if (addr_len < SIN6_LEN_RFC2133)
767 if (sin6->sin6_family && sin6->sin6_family != AF_INET6)
768 return -EAFNOSUPPORT;
770 /* port is the proto value [0..255] carried in nexthdr */
771 proto = ntohs(sin6->sin6_port);
774 proto = inet->inet_num;
775 else if (proto != inet->inet_num)
781 daddr = &sin6->sin6_addr;
783 fl.fl6_flowlabel = sin6->sin6_flowinfo&IPV6_FLOWINFO_MASK;
784 if (fl.fl6_flowlabel&IPV6_FLOWLABEL_MASK) {
785 flowlabel = fl6_sock_lookup(sk, fl.fl6_flowlabel);
786 if (flowlabel == NULL)
788 daddr = &flowlabel->dst;
793 * Otherwise it will be difficult to maintain
796 if (sk->sk_state == TCP_ESTABLISHED &&
797 ipv6_addr_equal(daddr, &np->daddr))
800 if (addr_len >= sizeof(struct sockaddr_in6) &&
801 sin6->sin6_scope_id &&
802 ipv6_addr_type(daddr)&IPV6_ADDR_LINKLOCAL)
803 fl.oif = sin6->sin6_scope_id;
805 if (sk->sk_state != TCP_ESTABLISHED)
806 return -EDESTADDRREQ;
808 proto = inet->inet_num;
810 fl.fl6_flowlabel = np->flow_label;
814 fl.oif = sk->sk_bound_dev_if;
816 if (msg->msg_controllen) {
818 memset(opt, 0, sizeof(struct ipv6_txoptions));
819 opt->tot_len = sizeof(struct ipv6_txoptions);
821 err = datagram_send_ctl(sock_net(sk), msg, &fl, opt, &hlimit,
824 fl6_sock_release(flowlabel);
827 if ((fl.fl6_flowlabel&IPV6_FLOWLABEL_MASK) && !flowlabel) {
828 flowlabel = fl6_sock_lookup(sk, fl.fl6_flowlabel);
829 if (flowlabel == NULL)
832 if (!(opt->opt_nflen|opt->opt_flen))
838 opt = fl6_merge_options(&opt_space, flowlabel, opt);
839 opt = ipv6_fixup_options(&opt_space, opt);
842 err = rawv6_probe_proto_opt(&fl, msg);
846 if (!ipv6_addr_any(daddr))
847 ipv6_addr_copy(&fl.fl6_dst, daddr);
849 fl.fl6_dst.s6_addr[15] = 0x1; /* :: means loopback (BSD'ism) */
850 if (ipv6_addr_any(&fl.fl6_src) && !ipv6_addr_any(&np->saddr))
851 ipv6_addr_copy(&fl.fl6_src, &np->saddr);
853 final_p = fl6_update_dst(&fl, opt, &final);
855 if (!fl.oif && ipv6_addr_is_multicast(&fl.fl6_dst))
856 fl.oif = np->mcast_oif;
857 security_sk_classify_flow(sk, &fl);
859 err = ip6_dst_lookup(sk, &dst, &fl);
863 ipv6_addr_copy(&fl.fl6_dst, final_p);
865 err = __xfrm_lookup(sock_net(sk), &dst, &fl, sk, XFRM_LOOKUP_WAIT);
868 err = ip6_dst_blackhole(sk, &dst, &fl);
874 if (ipv6_addr_is_multicast(&fl.fl6_dst))
875 hlimit = np->mcast_hops;
877 hlimit = np->hop_limit;
879 hlimit = ip6_dst_hoplimit(dst);
886 dontfrag = np->dontfrag;
888 if (msg->msg_flags&MSG_CONFIRM)
893 err = rawv6_send_hdrinc(sk, msg->msg_iov, len, &fl, &dst, msg->msg_flags);
896 err = ip6_append_data(sk, ip_generic_getfrag, msg->msg_iov,
897 len, 0, hlimit, tclass, opt, &fl, (struct rt6_info*)dst,
898 msg->msg_flags, dontfrag);
901 ip6_flush_pending_frames(sk);
902 else if (!(msg->msg_flags & MSG_MORE))
903 err = rawv6_push_pending_frames(sk, &fl, rp);
909 fl6_sock_release(flowlabel);
910 return err<0?err:len;
913 if (!(msg->msg_flags & MSG_PROBE) || len)
914 goto back_from_confirm;
919 static int rawv6_seticmpfilter(struct sock *sk, int level, int optname,
920 char __user *optval, int optlen)
924 if (optlen > sizeof(struct icmp6_filter))
925 optlen = sizeof(struct icmp6_filter);
926 if (copy_from_user(&raw6_sk(sk)->filter, optval, optlen))
936 static int rawv6_geticmpfilter(struct sock *sk, int level, int optname,
937 char __user *optval, int __user *optlen)
943 if (get_user(len, optlen))
947 if (len > sizeof(struct icmp6_filter))
948 len = sizeof(struct icmp6_filter);
949 if (put_user(len, optlen))
951 if (copy_to_user(optval, &raw6_sk(sk)->filter, len))
962 static int do_rawv6_setsockopt(struct sock *sk, int level, int optname,
963 char __user *optval, unsigned int optlen)
965 struct raw6_sock *rp = raw6_sk(sk);
968 if (get_user(val, (int __user *)optval))
973 if (inet_sk(sk)->inet_num == IPPROTO_ICMPV6 &&
974 level == IPPROTO_IPV6) {
976 * RFC3542 tells that IPV6_CHECKSUM socket
977 * option in the IPPROTO_IPV6 level is not
978 * allowed on ICMPv6 sockets.
979 * If you want to set it, use IPPROTO_RAW
980 * level IPV6_CHECKSUM socket option
986 /* You may get strange result with a positive odd offset;
987 RFC2292bis agrees with me. */
988 if (val > 0 && (val&1))
1001 return -ENOPROTOOPT;
1005 static int rawv6_setsockopt(struct sock *sk, int level, int optname,
1006 char __user *optval, unsigned int optlen)
1013 if (inet_sk(sk)->inet_num != IPPROTO_ICMPV6)
1015 return rawv6_seticmpfilter(sk, level, optname, optval,
1018 if (optname == IPV6_CHECKSUM)
1021 return ipv6_setsockopt(sk, level, optname, optval,
1025 return do_rawv6_setsockopt(sk, level, optname, optval, optlen);
1028 #ifdef CONFIG_COMPAT
1029 static int compat_rawv6_setsockopt(struct sock *sk, int level, int optname,
1030 char __user *optval, unsigned int optlen)
1036 if (inet_sk(sk)->inet_num != IPPROTO_ICMPV6)
1038 return rawv6_seticmpfilter(sk, level, optname, optval, optlen);
1040 if (optname == IPV6_CHECKSUM)
1043 return compat_ipv6_setsockopt(sk, level, optname,
1046 return do_rawv6_setsockopt(sk, level, optname, optval, optlen);
1050 static int do_rawv6_getsockopt(struct sock *sk, int level, int optname,
1051 char __user *optval, int __user *optlen)
1053 struct raw6_sock *rp = raw6_sk(sk);
1056 if (get_user(len,optlen))
1062 * We allow getsockopt() for IPPROTO_IPV6-level
1063 * IPV6_CHECKSUM socket option on ICMPv6 sockets
1064 * since RFC3542 is silent about it.
1066 if (rp->checksum == 0)
1073 return -ENOPROTOOPT;
1076 len = min_t(unsigned int, sizeof(int), len);
1078 if (put_user(len, optlen))
1080 if (copy_to_user(optval,&val,len))
1085 static int rawv6_getsockopt(struct sock *sk, int level, int optname,
1086 char __user *optval, int __user *optlen)
1093 if (inet_sk(sk)->inet_num != IPPROTO_ICMPV6)
1095 return rawv6_geticmpfilter(sk, level, optname, optval,
1098 if (optname == IPV6_CHECKSUM)
1101 return ipv6_getsockopt(sk, level, optname, optval,
1105 return do_rawv6_getsockopt(sk, level, optname, optval, optlen);
1108 #ifdef CONFIG_COMPAT
1109 static int compat_rawv6_getsockopt(struct sock *sk, int level, int optname,
1110 char __user *optval, int __user *optlen)
1116 if (inet_sk(sk)->inet_num != IPPROTO_ICMPV6)
1118 return rawv6_geticmpfilter(sk, level, optname, optval, optlen);
1120 if (optname == IPV6_CHECKSUM)
1123 return compat_ipv6_getsockopt(sk, level, optname,
1126 return do_rawv6_getsockopt(sk, level, optname, optval, optlen);
1130 static int rawv6_ioctl(struct sock *sk, int cmd, unsigned long arg)
1135 int amount = sk_wmem_alloc_get(sk);
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 #ifdef CONFIG_IPV6_MROUTE
1154 return ip6mr_ioctl(sk, cmd, (void __user *)arg);
1156 return -ENOIOCTLCMD;
1161 #ifdef CONFIG_COMPAT
1162 static int compat_rawv6_ioctl(struct sock *sk, unsigned int cmd, unsigned long arg)
1167 return -ENOIOCTLCMD;
1169 #ifdef CONFIG_IPV6_MROUTE
1170 return ip6mr_compat_ioctl(sk, cmd, compat_ptr(arg));
1172 return -ENOIOCTLCMD;
1178 static void rawv6_close(struct sock *sk, long timeout)
1180 if (inet_sk(sk)->inet_num == IPPROTO_RAW)
1181 ip6_ra_control(sk, -1);
1183 sk_common_release(sk);
1186 static void raw6_destroy(struct sock *sk)
1189 ip6_flush_pending_frames(sk);
1192 inet6_destroy_sock(sk);
1195 static int rawv6_init_sk(struct sock *sk)
1197 struct raw6_sock *rp = raw6_sk(sk);
1199 switch (inet_sk(sk)->inet_num) {
1200 case IPPROTO_ICMPV6:
1214 struct proto rawv6_prot = {
1216 .owner = THIS_MODULE,
1217 .close = rawv6_close,
1218 .destroy = raw6_destroy,
1219 .connect = ip6_datagram_connect,
1220 .disconnect = udp_disconnect,
1221 .ioctl = rawv6_ioctl,
1222 .init = rawv6_init_sk,
1223 .setsockopt = rawv6_setsockopt,
1224 .getsockopt = rawv6_getsockopt,
1225 .sendmsg = rawv6_sendmsg,
1226 .recvmsg = rawv6_recvmsg,
1228 .backlog_rcv = rawv6_rcv_skb,
1229 .hash = raw_hash_sk,
1230 .unhash = raw_unhash_sk,
1231 .obj_size = sizeof(struct raw6_sock),
1232 .h.raw_hash = &raw_v6_hashinfo,
1233 #ifdef CONFIG_COMPAT
1234 .compat_setsockopt = compat_rawv6_setsockopt,
1235 .compat_getsockopt = compat_rawv6_getsockopt,
1236 .compat_ioctl = compat_rawv6_ioctl,
1240 #ifdef CONFIG_PROC_FS
1241 static void raw6_sock_seq_show(struct seq_file *seq, struct sock *sp, int i)
1243 struct ipv6_pinfo *np = inet6_sk(sp);
1244 struct in6_addr *dest, *src;
1248 src = &np->rcv_saddr;
1250 srcp = inet_sk(sp)->inet_num;
1252 "%4d: %08X%08X%08X%08X:%04X %08X%08X%08X%08X:%04X "
1253 "%02X %08X:%08X %02X:%08lX %08X %5d %8d %lu %d %p %d\n",
1255 src->s6_addr32[0], src->s6_addr32[1],
1256 src->s6_addr32[2], src->s6_addr32[3], srcp,
1257 dest->s6_addr32[0], dest->s6_addr32[1],
1258 dest->s6_addr32[2], dest->s6_addr32[3], destp,
1260 sk_wmem_alloc_get(sp),
1261 sk_rmem_alloc_get(sp),
1265 atomic_read(&sp->sk_refcnt), sp, atomic_read(&sp->sk_drops));
1268 static int raw6_seq_show(struct seq_file *seq, void *v)
1270 if (v == SEQ_START_TOKEN)
1275 "st tx_queue rx_queue tr tm->when retrnsmt"
1276 " uid timeout inode ref pointer drops\n");
1278 raw6_sock_seq_show(seq, v, raw_seq_private(seq)->bucket);
1282 static const struct seq_operations raw6_seq_ops = {
1283 .start = raw_seq_start,
1284 .next = raw_seq_next,
1285 .stop = raw_seq_stop,
1286 .show = raw6_seq_show,
1289 static int raw6_seq_open(struct inode *inode, struct file *file)
1291 return raw_seq_open(inode, file, &raw_v6_hashinfo, &raw6_seq_ops);
1294 static const struct file_operations raw6_seq_fops = {
1295 .owner = THIS_MODULE,
1296 .open = raw6_seq_open,
1298 .llseek = seq_lseek,
1299 .release = seq_release_net,
1302 static int __net_init raw6_init_net(struct net *net)
1304 if (!proc_net_fops_create(net, "raw6", S_IRUGO, &raw6_seq_fops))
1310 static void __net_exit raw6_exit_net(struct net *net)
1312 proc_net_remove(net, "raw6");
1315 static struct pernet_operations raw6_net_ops = {
1316 .init = raw6_init_net,
1317 .exit = raw6_exit_net,
1320 int __init raw6_proc_init(void)
1322 return register_pernet_subsys(&raw6_net_ops);
1325 void raw6_proc_exit(void)
1327 unregister_pernet_subsys(&raw6_net_ops);
1329 #endif /* CONFIG_PROC_FS */
1331 /* Same as inet6_dgram_ops, sans udp_poll. */
1332 static const struct proto_ops inet6_sockraw_ops = {
1334 .owner = THIS_MODULE,
1335 .release = inet6_release,
1337 .connect = inet_dgram_connect, /* ok */
1338 .socketpair = sock_no_socketpair, /* a do nothing */
1339 .accept = sock_no_accept, /* a do nothing */
1340 .getname = inet6_getname,
1341 .poll = datagram_poll, /* ok */
1342 .ioctl = inet6_ioctl, /* must change */
1343 .listen = sock_no_listen, /* ok */
1344 .shutdown = inet_shutdown, /* ok */
1345 .setsockopt = sock_common_setsockopt, /* ok */
1346 .getsockopt = sock_common_getsockopt, /* ok */
1347 .sendmsg = inet_sendmsg, /* ok */
1348 .recvmsg = sock_common_recvmsg, /* ok */
1349 .mmap = sock_no_mmap,
1350 .sendpage = sock_no_sendpage,
1351 #ifdef CONFIG_COMPAT
1352 .compat_setsockopt = compat_sock_common_setsockopt,
1353 .compat_getsockopt = compat_sock_common_getsockopt,
1357 static struct inet_protosw rawv6_protosw = {
1359 .protocol = IPPROTO_IP, /* wild card */
1360 .prot = &rawv6_prot,
1361 .ops = &inet6_sockraw_ops,
1362 .no_check = UDP_CSUM_DEFAULT,
1363 .flags = INET_PROTOSW_REUSE,
1366 int __init rawv6_init(void)
1370 ret = inet6_register_protosw(&rawv6_protosw);
1377 void rawv6_exit(void)
1379 inet6_unregister_protosw(&rawv6_protosw);