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/sched.h>
28 #include <linux/net.h>
29 #include <linux/in6.h>
30 #include <linux/netdevice.h>
31 #include <linux/if_arp.h>
32 #include <linux/icmpv6.h>
33 #include <linux/netfilter.h>
34 #include <linux/netfilter_ipv6.h>
35 #include <linux/skbuff.h>
36 #include <asm/uaccess.h>
37 #include <asm/ioctls.h>
45 #include <net/ndisc.h>
46 #include <net/protocol.h>
47 #include <net/ip6_route.h>
48 #include <net/ip6_checksum.h>
49 #include <net/addrconf.h>
50 #include <net/transp_v6.h>
52 #include <net/inet_common.h>
53 #include <net/tcp_states.h>
55 #include <net/rawv6.h>
58 #include <linux/proc_fs.h>
59 #include <linux/seq_file.h>
61 struct hlist_head raw_v6_htable[RAWV6_HTABLE_SIZE];
62 DEFINE_RWLOCK(raw_v6_lock);
64 static void raw_v6_hash(struct sock *sk)
66 struct hlist_head *list = &raw_v6_htable[inet_sk(sk)->num &
67 (RAWV6_HTABLE_SIZE - 1)];
69 write_lock_bh(&raw_v6_lock);
70 sk_add_node(sk, list);
71 sock_prot_inc_use(sk->sk_prot);
72 write_unlock_bh(&raw_v6_lock);
75 static void raw_v6_unhash(struct sock *sk)
77 write_lock_bh(&raw_v6_lock);
78 if (sk_del_node_init(sk))
79 sock_prot_dec_use(sk->sk_prot);
80 write_unlock_bh(&raw_v6_lock);
84 /* Grumble... icmp and ip_input want to get at this... */
85 struct sock *__raw_v6_lookup(struct sock *sk, unsigned short num,
86 struct in6_addr *loc_addr, struct in6_addr *rmt_addr,
89 struct hlist_node *node;
90 int is_multicast = ipv6_addr_is_multicast(loc_addr);
92 sk_for_each_from(sk, node)
93 if (inet_sk(sk)->num == num) {
94 struct ipv6_pinfo *np = inet6_sk(sk);
96 if (!ipv6_addr_any(&np->daddr) &&
97 !ipv6_addr_equal(&np->daddr, rmt_addr))
100 if (sk->sk_bound_dev_if && sk->sk_bound_dev_if != dif)
103 if (!ipv6_addr_any(&np->rcv_saddr)) {
104 if (ipv6_addr_equal(&np->rcv_saddr, loc_addr))
107 inet6_mc_check(sk, loc_addr, rmt_addr))
122 static __inline__ int icmpv6_filter(struct sock *sk, struct sk_buff *skb)
124 struct icmp6hdr *icmph;
125 struct raw6_sock *rp = raw6_sk(sk);
127 if (pskb_may_pull(skb, sizeof(struct icmp6hdr))) {
128 __u32 *data = &rp->filter.data[0];
131 icmph = (struct icmp6hdr *) skb->data;
132 bit_nr = icmph->icmp6_type;
134 return (data[bit_nr >> 5] & (1 << (bit_nr & 31))) != 0;
140 * demultiplex raw sockets.
141 * (should consider queueing the skb in the sock receive_queue
142 * without calling rawv6.c)
144 * Caller owns SKB so we must make clones.
146 int ipv6_raw_deliver(struct sk_buff *skb, int nexthdr)
148 struct in6_addr *saddr;
149 struct in6_addr *daddr;
154 saddr = &skb->nh.ipv6h->saddr;
157 hash = nexthdr & (MAX_INET_PROTOS - 1);
159 read_lock(&raw_v6_lock);
160 sk = sk_head(&raw_v6_htable[hash]);
163 * The first socket found will be delivered after
164 * delivery to transport protocols.
170 sk = __raw_v6_lookup(sk, nexthdr, daddr, saddr, IP6CB(skb)->iif);
174 if (nexthdr != IPPROTO_ICMPV6 || !icmpv6_filter(sk, skb)) {
175 struct sk_buff *clone = skb_clone(skb, GFP_ATOMIC);
177 /* Not releasing hash table! */
180 rawv6_rcv(sk, clone);
183 sk = __raw_v6_lookup(sk_next(sk), nexthdr, daddr, saddr,
187 read_unlock(&raw_v6_lock);
191 /* This cleans up af_inet6 a bit. -DaveM */
192 static int rawv6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
194 struct inet_sock *inet = inet_sk(sk);
195 struct ipv6_pinfo *np = inet6_sk(sk);
196 struct sockaddr_in6 *addr = (struct sockaddr_in6 *) uaddr;
201 if (addr_len < SIN6_LEN_RFC2133)
203 addr_type = ipv6_addr_type(&addr->sin6_addr);
205 /* Raw sockets are IPv6 only */
206 if (addr_type == IPV6_ADDR_MAPPED)
207 return(-EADDRNOTAVAIL);
212 if (sk->sk_state != TCP_CLOSE)
215 /* Check if the address belongs to the host. */
216 if (addr_type != IPV6_ADDR_ANY) {
217 struct net_device *dev = NULL;
219 if (addr_type & IPV6_ADDR_LINKLOCAL) {
220 if (addr_len >= sizeof(struct sockaddr_in6) &&
221 addr->sin6_scope_id) {
222 /* Override any existing binding, if another
223 * one is supplied by user.
225 sk->sk_bound_dev_if = addr->sin6_scope_id;
228 /* Binding to link-local address requires an interface */
229 if (!sk->sk_bound_dev_if)
232 dev = dev_get_by_index(sk->sk_bound_dev_if);
239 /* ipv4 addr of the socket is invalid. Only the
240 * unspecified and mapped address have a v4 equivalent.
242 v4addr = LOOPBACK4_IPV6;
243 if (!(addr_type & IPV6_ADDR_MULTICAST)) {
244 err = -EADDRNOTAVAIL;
245 if (!ipv6_chk_addr(&addr->sin6_addr, dev, 0)) {
255 inet->rcv_saddr = inet->saddr = v4addr;
256 ipv6_addr_copy(&np->rcv_saddr, &addr->sin6_addr);
257 if (!(addr_type & IPV6_ADDR_MULTICAST))
258 ipv6_addr_copy(&np->saddr, &addr->sin6_addr);
265 void rawv6_err(struct sock *sk, struct sk_buff *skb,
266 struct inet6_skb_parm *opt,
267 int type, int code, int offset, u32 info)
269 struct inet_sock *inet = inet_sk(sk);
270 struct ipv6_pinfo *np = inet6_sk(sk);
274 /* Report error on raw socket, if:
275 1. User requested recverr.
276 2. Socket is connected (otherwise the error indication
277 is useless without recverr and error is hard.
279 if (!np->recverr && sk->sk_state != TCP_ESTABLISHED)
282 harderr = icmpv6_err_convert(type, code, &err);
283 if (type == ICMPV6_PKT_TOOBIG)
284 harderr = (np->pmtudisc == IPV6_PMTUDISC_DO);
287 u8 *payload = skb->data;
290 ipv6_icmp_error(sk, skb, err, 0, ntohl(info), payload);
293 if (np->recverr || harderr) {
295 sk->sk_error_report(sk);
299 static inline int rawv6_rcv_skb(struct sock * sk, struct sk_buff * skb)
301 if ((raw6_sk(sk)->checksum || sk->sk_filter) &&
302 skb_checksum_complete(skb)) {
303 /* FIXME: increment a raw6 drops counter here */
308 /* Charge it to the socket. */
309 if (sock_queue_rcv_skb(sk,skb)<0) {
310 /* FIXME: increment a raw6 drops counter here */
319 * This is next to useless...
320 * if we demultiplex in network layer we don't need the extra call
321 * just to queue the skb...
322 * maybe we could have the network decide upon a hint if it
323 * should call raw_rcv for demultiplexing
325 int rawv6_rcv(struct sock *sk, struct sk_buff *skb)
327 struct inet_sock *inet = inet_sk(sk);
328 struct raw6_sock *rp = raw6_sk(sk);
330 if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb)) {
336 skb->ip_summed = CHECKSUM_UNNECESSARY;
338 if (skb->ip_summed == CHECKSUM_HW) {
339 skb_postpull_rcsum(skb, skb->nh.raw,
340 skb->h.raw - skb->nh.raw);
341 if (!csum_ipv6_magic(&skb->nh.ipv6h->saddr,
342 &skb->nh.ipv6h->daddr,
343 skb->len, inet->num, skb->csum))
344 skb->ip_summed = CHECKSUM_UNNECESSARY;
346 if (skb->ip_summed != CHECKSUM_UNNECESSARY)
347 skb->csum = ~csum_ipv6_magic(&skb->nh.ipv6h->saddr,
348 &skb->nh.ipv6h->daddr,
349 skb->len, inet->num, 0);
352 if (skb_checksum_complete(skb)) {
353 /* FIXME: increment a raw6 drops counter here */
359 rawv6_rcv_skb(sk, skb);
365 * This should be easy, if there is something there
366 * we return it, otherwise we block.
369 static int rawv6_recvmsg(struct kiocb *iocb, struct sock *sk,
370 struct msghdr *msg, size_t len,
371 int noblock, int flags, int *addr_len)
373 struct ipv6_pinfo *np = inet6_sk(sk);
374 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)msg->msg_name;
383 *addr_len=sizeof(*sin6);
385 if (flags & MSG_ERRQUEUE)
386 return ipv6_recv_error(sk, msg, len);
388 skb = skb_recv_datagram(sk, flags, noblock, &err);
395 msg->msg_flags |= MSG_TRUNC;
398 if (skb->ip_summed==CHECKSUM_UNNECESSARY) {
399 err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
400 } else if (msg->msg_flags&MSG_TRUNC) {
401 if (__skb_checksum_complete(skb))
403 err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
405 err = skb_copy_and_csum_datagram_iovec(skb, 0, msg->msg_iov);
412 /* Copy the address. */
414 sin6->sin6_family = AF_INET6;
415 ipv6_addr_copy(&sin6->sin6_addr, &skb->nh.ipv6h->saddr);
416 sin6->sin6_flowinfo = 0;
417 sin6->sin6_scope_id = 0;
418 if (ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL)
419 sin6->sin6_scope_id = IP6CB(skb)->iif;
422 sock_recv_timestamp(msg, sk, skb);
425 datagram_recv_ctl(sk, msg, skb);
428 if (flags & MSG_TRUNC)
432 skb_free_datagram(sk, skb);
437 skb_kill_datagram(sk, skb, flags);
439 /* Error for blocking case is chosen to masquerade
440 as some normal condition.
442 err = (flags&MSG_DONTWAIT) ? -EAGAIN : -EHOSTUNREACH;
443 /* FIXME: increment a raw6 drops counter here */
447 static int rawv6_push_pending_frames(struct sock *sk, struct flowi *fl,
448 struct raw6_sock *rp)
461 if ((skb = skb_peek(&sk->sk_write_queue)) == NULL)
465 total_len = inet_sk(sk)->cork.length - (skb->nh.raw - skb->data);
466 if (offset >= total_len - 1) {
468 ip6_flush_pending_frames(sk);
472 /* should be check HW csum miyazawa */
473 if (skb_queue_len(&sk->sk_write_queue) == 1) {
475 * Only one fragment on the socket.
477 tmp_csum = skb->csum;
479 struct sk_buff *csum_skb = NULL;
482 skb_queue_walk(&sk->sk_write_queue, skb) {
483 tmp_csum = csum_add(tmp_csum, skb->csum);
488 len = skb->len - (skb->h.raw - skb->data);
500 offset += skb->h.raw - skb->data;
501 if (skb_copy_bits(skb, offset, &csum, 2))
504 /* in case cksum was not initialized */
506 tmp_csum = csum_sub(tmp_csum, csum);
508 tmp_csum = csum_ipv6_magic(&fl->fl6_src,
510 total_len, fl->proto, tmp_csum);
516 if (skb_store_bits(skb, offset, &csum, 2))
520 err = ip6_push_pending_frames(sk);
525 static int rawv6_send_hdrinc(struct sock *sk, void *from, int length,
526 struct flowi *fl, struct rt6_info *rt,
529 struct ipv6_pinfo *np = inet6_sk(sk);
535 if (length > rt->u.dst.dev->mtu) {
536 ipv6_local_error(sk, EMSGSIZE, fl, rt->u.dst.dev->mtu);
542 hh_len = LL_RESERVED_SPACE(rt->u.dst.dev);
544 skb = sock_alloc_send_skb(sk, length+hh_len+15,
545 flags&MSG_DONTWAIT, &err);
548 skb_reserve(skb, hh_len);
550 skb->priority = sk->sk_priority;
551 skb->dst = dst_clone(&rt->u.dst);
553 skb->nh.ipv6h = iph = (struct ipv6hdr *)skb_put(skb, length);
555 skb->ip_summed = CHECKSUM_NONE;
557 skb->h.raw = skb->nh.raw;
558 err = memcpy_fromiovecend((void *)iph, from, 0, length);
562 IP6_INC_STATS(IPSTATS_MIB_OUTREQUESTS);
563 err = NF_HOOK(PF_INET6, NF_IP6_LOCAL_OUT, skb, NULL, rt->u.dst.dev,
566 err = np->recverr ? net_xmit_errno(err) : 0;
576 IP6_INC_STATS(IPSTATS_MIB_OUTDISCARDS);
580 static void rawv6_probe_proto_opt(struct flowi *fl, struct msghdr *msg)
583 u8 __user *type = NULL;
584 u8 __user *code = NULL;
591 for (i = 0; i < msg->msg_iovlen; i++) {
592 iov = &msg->msg_iov[i];
598 /* check if one-byte field is readable or not. */
599 if (iov->iov_base && iov->iov_len < 1)
603 type = iov->iov_base;
604 /* check if code field is readable or not. */
605 if (iov->iov_len > 1)
608 code = iov->iov_base;
611 get_user(fl->fl_icmp_type, type);
612 get_user(fl->fl_icmp_code, code);
625 static int rawv6_sendmsg(struct kiocb *iocb, struct sock *sk,
626 struct msghdr *msg, size_t len)
628 struct ipv6_txoptions opt_space;
629 struct sockaddr_in6 * sin6 = (struct sockaddr_in6 *) msg->msg_name;
630 struct in6_addr *daddr, *final_p = NULL, final;
631 struct inet_sock *inet = inet_sk(sk);
632 struct ipv6_pinfo *np = inet6_sk(sk);
633 struct raw6_sock *rp = raw6_sk(sk);
634 struct ipv6_txoptions *opt = NULL;
635 struct ip6_flowlabel *flowlabel = NULL;
636 struct dst_entry *dst = NULL;
638 int addr_len = msg->msg_namelen;
644 /* Rough check on arithmetic overflow,
645 better check is made in ip6_build_xmit
650 /* Mirror BSD error message compatibility */
651 if (msg->msg_flags & MSG_OOB)
655 * Get and verify the address.
657 memset(&fl, 0, sizeof(fl));
660 if (addr_len < SIN6_LEN_RFC2133)
663 if (sin6->sin6_family && sin6->sin6_family != AF_INET6)
664 return(-EAFNOSUPPORT);
666 /* port is the proto value [0..255] carried in nexthdr */
667 proto = ntohs(sin6->sin6_port);
671 else if (proto != inet->num)
677 daddr = &sin6->sin6_addr;
679 fl.fl6_flowlabel = sin6->sin6_flowinfo&IPV6_FLOWINFO_MASK;
680 if (fl.fl6_flowlabel&IPV6_FLOWLABEL_MASK) {
681 flowlabel = fl6_sock_lookup(sk, fl.fl6_flowlabel);
682 if (flowlabel == NULL)
684 daddr = &flowlabel->dst;
689 * Otherwise it will be difficult to maintain
692 if (sk->sk_state == TCP_ESTABLISHED &&
693 ipv6_addr_equal(daddr, &np->daddr))
696 if (addr_len >= sizeof(struct sockaddr_in6) &&
697 sin6->sin6_scope_id &&
698 ipv6_addr_type(daddr)&IPV6_ADDR_LINKLOCAL)
699 fl.oif = sin6->sin6_scope_id;
701 if (sk->sk_state != TCP_ESTABLISHED)
702 return -EDESTADDRREQ;
706 fl.fl6_flowlabel = np->flow_label;
709 if (ipv6_addr_any(daddr)) {
711 * unspecified destination address
712 * treated as error... is this correct ?
714 fl6_sock_release(flowlabel);
719 fl.oif = sk->sk_bound_dev_if;
721 if (msg->msg_controllen) {
723 memset(opt, 0, sizeof(struct ipv6_txoptions));
724 opt->tot_len = sizeof(struct ipv6_txoptions);
726 err = datagram_send_ctl(msg, &fl, opt, &hlimit, &tclass);
728 fl6_sock_release(flowlabel);
731 if ((fl.fl6_flowlabel&IPV6_FLOWLABEL_MASK) && !flowlabel) {
732 flowlabel = fl6_sock_lookup(sk, fl.fl6_flowlabel);
733 if (flowlabel == NULL)
736 if (!(opt->opt_nflen|opt->opt_flen))
742 opt = fl6_merge_options(&opt_space, flowlabel, opt);
743 opt = ipv6_fixup_options(&opt_space, opt);
746 rawv6_probe_proto_opt(&fl, msg);
748 ipv6_addr_copy(&fl.fl6_dst, daddr);
749 if (ipv6_addr_any(&fl.fl6_src) && !ipv6_addr_any(&np->saddr))
750 ipv6_addr_copy(&fl.fl6_src, &np->saddr);
752 /* merge ip6_build_xmit from ip6_output */
753 if (opt && opt->srcrt) {
754 struct rt0_hdr *rt0 = (struct rt0_hdr *) opt->srcrt;
755 ipv6_addr_copy(&final, &fl.fl6_dst);
756 ipv6_addr_copy(&fl.fl6_dst, rt0->addr);
760 if (!fl.oif && ipv6_addr_is_multicast(&fl.fl6_dst))
761 fl.oif = np->mcast_oif;
763 err = ip6_dst_lookup(sk, &dst, &fl);
767 ipv6_addr_copy(&fl.fl6_dst, final_p);
769 if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0)
773 if (ipv6_addr_is_multicast(&fl.fl6_dst))
774 hlimit = np->mcast_hops;
776 hlimit = np->hop_limit;
778 hlimit = dst_metric(dst, RTAX_HOPLIMIT);
780 hlimit = ipv6_get_hoplimit(dst->dev);
784 tclass = np->cork.tclass;
789 if (msg->msg_flags&MSG_CONFIRM)
794 err = rawv6_send_hdrinc(sk, msg->msg_iov, len, &fl, (struct rt6_info*)dst, msg->msg_flags);
797 err = ip6_append_data(sk, ip_generic_getfrag, msg->msg_iov,
798 len, 0, hlimit, tclass, opt, &fl, (struct rt6_info*)dst,
802 ip6_flush_pending_frames(sk);
803 else if (!(msg->msg_flags & MSG_MORE))
804 err = rawv6_push_pending_frames(sk, &fl, rp);
807 ip6_dst_store(sk, dst,
808 ipv6_addr_equal(&fl.fl6_dst, &np->daddr) ?
813 fl6_sock_release(flowlabel);
814 return err<0?err:len;
817 if (!(msg->msg_flags & MSG_PROBE) || len)
818 goto back_from_confirm;
823 static int rawv6_seticmpfilter(struct sock *sk, int level, int optname,
824 char __user *optval, int optlen)
828 if (optlen > sizeof(struct icmp6_filter))
829 optlen = sizeof(struct icmp6_filter);
830 if (copy_from_user(&raw6_sk(sk)->filter, optval, optlen))
840 static int rawv6_geticmpfilter(struct sock *sk, int level, int optname,
841 char __user *optval, int __user *optlen)
847 if (get_user(len, optlen))
851 if (len > sizeof(struct icmp6_filter))
852 len = sizeof(struct icmp6_filter);
853 if (put_user(len, optlen))
855 if (copy_to_user(optval, &raw6_sk(sk)->filter, len))
866 static int rawv6_setsockopt(struct sock *sk, int level, int optname,
867 char __user *optval, int optlen)
869 struct raw6_sock *rp = raw6_sk(sk);
877 if (inet_sk(sk)->num != IPPROTO_ICMPV6)
879 return rawv6_seticmpfilter(sk, level, optname, optval,
882 if (optname == IPV6_CHECKSUM)
885 return ipv6_setsockopt(sk, level, optname, optval,
889 if (get_user(val, (int __user *)optval))
894 /* You may get strange result with a positive odd offset;
895 RFC2292bis agrees with me. */
896 if (val > 0 && (val&1))
909 return(-ENOPROTOOPT);
913 static int rawv6_getsockopt(struct sock *sk, int level, int optname,
914 char __user *optval, int __user *optlen)
916 struct raw6_sock *rp = raw6_sk(sk);
924 if (inet_sk(sk)->num != IPPROTO_ICMPV6)
926 return rawv6_geticmpfilter(sk, level, optname, optval,
929 if (optname == IPV6_CHECKSUM)
932 return ipv6_getsockopt(sk, level, optname, optval,
936 if (get_user(len,optlen))
941 if (rp->checksum == 0)
951 len = min_t(unsigned int, sizeof(int), len);
953 if (put_user(len, optlen))
955 if (copy_to_user(optval,&val,len))
960 static int rawv6_ioctl(struct sock *sk, int cmd, unsigned long arg)
965 int amount = atomic_read(&sk->sk_wmem_alloc);
966 return put_user(amount, (int __user *)arg);
973 spin_lock_bh(&sk->sk_receive_queue.lock);
974 skb = skb_peek(&sk->sk_receive_queue);
976 amount = skb->tail - skb->h.raw;
977 spin_unlock_bh(&sk->sk_receive_queue.lock);
978 return put_user(amount, (int __user *)arg);
986 static void rawv6_close(struct sock *sk, long timeout)
988 if (inet_sk(sk)->num == IPPROTO_RAW)
989 ip6_ra_control(sk, -1, NULL);
991 sk_common_release(sk);
994 static int rawv6_init_sk(struct sock *sk)
996 if (inet_sk(sk)->num == IPPROTO_ICMPV6) {
997 struct raw6_sock *rp = raw6_sk(sk);
1004 struct proto rawv6_prot = {
1006 .owner = THIS_MODULE,
1007 .close = rawv6_close,
1008 .connect = ip6_datagram_connect,
1009 .disconnect = udp_disconnect,
1010 .ioctl = rawv6_ioctl,
1011 .init = rawv6_init_sk,
1012 .destroy = inet6_destroy_sock,
1013 .setsockopt = rawv6_setsockopt,
1014 .getsockopt = rawv6_getsockopt,
1015 .sendmsg = rawv6_sendmsg,
1016 .recvmsg = rawv6_recvmsg,
1018 .backlog_rcv = rawv6_rcv_skb,
1019 .hash = raw_v6_hash,
1020 .unhash = raw_v6_unhash,
1021 .obj_size = sizeof(struct raw6_sock),
1024 #ifdef CONFIG_PROC_FS
1025 struct raw6_iter_state {
1029 #define raw6_seq_private(seq) ((struct raw6_iter_state *)(seq)->private)
1031 static struct sock *raw6_get_first(struct seq_file *seq)
1034 struct hlist_node *node;
1035 struct raw6_iter_state* state = raw6_seq_private(seq);
1037 for (state->bucket = 0; state->bucket < RAWV6_HTABLE_SIZE; ++state->bucket)
1038 sk_for_each(sk, node, &raw_v6_htable[state->bucket])
1039 if (sk->sk_family == PF_INET6)
1046 static struct sock *raw6_get_next(struct seq_file *seq, struct sock *sk)
1048 struct raw6_iter_state* state = raw6_seq_private(seq);
1054 } while (sk && sk->sk_family != PF_INET6);
1056 if (!sk && ++state->bucket < RAWV6_HTABLE_SIZE) {
1057 sk = sk_head(&raw_v6_htable[state->bucket]);
1063 static struct sock *raw6_get_idx(struct seq_file *seq, loff_t pos)
1065 struct sock *sk = raw6_get_first(seq);
1067 while (pos && (sk = raw6_get_next(seq, sk)) != NULL)
1069 return pos ? NULL : sk;
1072 static void *raw6_seq_start(struct seq_file *seq, loff_t *pos)
1074 read_lock(&raw_v6_lock);
1075 return *pos ? raw6_get_idx(seq, *pos - 1) : SEQ_START_TOKEN;
1078 static void *raw6_seq_next(struct seq_file *seq, void *v, loff_t *pos)
1082 if (v == SEQ_START_TOKEN)
1083 sk = raw6_get_first(seq);
1085 sk = raw6_get_next(seq, v);
1090 static void raw6_seq_stop(struct seq_file *seq, void *v)
1092 read_unlock(&raw_v6_lock);
1095 static void raw6_sock_seq_show(struct seq_file *seq, struct sock *sp, int i)
1097 struct ipv6_pinfo *np = inet6_sk(sp);
1098 struct in6_addr *dest, *src;
1102 src = &np->rcv_saddr;
1104 srcp = inet_sk(sp)->num;
1106 "%4d: %08X%08X%08X%08X:%04X %08X%08X%08X%08X:%04X "
1107 "%02X %08X:%08X %02X:%08lX %08X %5d %8d %lu %d %p\n",
1109 src->s6_addr32[0], src->s6_addr32[1],
1110 src->s6_addr32[2], src->s6_addr32[3], srcp,
1111 dest->s6_addr32[0], dest->s6_addr32[1],
1112 dest->s6_addr32[2], dest->s6_addr32[3], destp,
1114 atomic_read(&sp->sk_wmem_alloc),
1115 atomic_read(&sp->sk_rmem_alloc),
1119 atomic_read(&sp->sk_refcnt), sp);
1122 static int raw6_seq_show(struct seq_file *seq, void *v)
1124 if (v == SEQ_START_TOKEN)
1129 "st tx_queue rx_queue tr tm->when retrnsmt"
1130 " uid timeout inode\n");
1132 raw6_sock_seq_show(seq, v, raw6_seq_private(seq)->bucket);
1136 static struct seq_operations raw6_seq_ops = {
1137 .start = raw6_seq_start,
1138 .next = raw6_seq_next,
1139 .stop = raw6_seq_stop,
1140 .show = raw6_seq_show,
1143 static int raw6_seq_open(struct inode *inode, struct file *file)
1145 struct seq_file *seq;
1147 struct raw6_iter_state *s = kmalloc(sizeof(*s), GFP_KERNEL);
1150 rc = seq_open(file, &raw6_seq_ops);
1153 seq = file->private_data;
1155 memset(s, 0, sizeof(*s));
1163 static struct file_operations raw6_seq_fops = {
1164 .owner = THIS_MODULE,
1165 .open = raw6_seq_open,
1167 .llseek = seq_lseek,
1168 .release = seq_release_private,
1171 int __init raw6_proc_init(void)
1173 if (!proc_net_fops_create("raw6", S_IRUGO, &raw6_seq_fops))
1178 void raw6_proc_exit(void)
1180 proc_net_remove("raw6");
1182 #endif /* CONFIG_PROC_FS */