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 <asm/uaccess.h>
36 #include <asm/ioctls.h>
42 #include <net/ndisc.h>
43 #include <net/protocol.h>
44 #include <net/ip6_route.h>
45 #include <net/addrconf.h>
46 #include <net/transp_v6.h>
48 #include <net/inet_common.h>
50 #include <net/rawv6.h>
53 #include <linux/proc_fs.h>
54 #include <linux/seq_file.h>
56 struct hlist_head raw_v6_htable[RAWV6_HTABLE_SIZE];
57 rwlock_t raw_v6_lock = RW_LOCK_UNLOCKED;
59 static void raw_v6_hash(struct sock *sk)
61 struct hlist_head *list = &raw_v6_htable[inet_sk(sk)->num &
62 (RAWV6_HTABLE_SIZE - 1)];
64 write_lock_bh(&raw_v6_lock);
65 sk_add_node(sk, list);
66 sock_prot_inc_use(sk->sk_prot);
67 write_unlock_bh(&raw_v6_lock);
70 static void raw_v6_unhash(struct sock *sk)
72 write_lock_bh(&raw_v6_lock);
73 if (sk_del_node_init(sk))
74 sock_prot_dec_use(sk->sk_prot);
75 write_unlock_bh(&raw_v6_lock);
79 /* Grumble... icmp and ip_input want to get at this... */
80 struct sock *__raw_v6_lookup(struct sock *sk, unsigned short num,
81 struct in6_addr *loc_addr, struct in6_addr *rmt_addr)
83 struct hlist_node *node;
84 int is_multicast = ipv6_addr_is_multicast(loc_addr);
86 sk_for_each_from(sk, node)
87 if (inet_sk(sk)->num == num) {
88 struct ipv6_pinfo *np = inet6_sk(sk);
90 if (!ipv6_addr_any(&np->daddr) &&
91 ipv6_addr_cmp(&np->daddr, rmt_addr))
94 if (!ipv6_addr_any(&np->rcv_saddr)) {
95 if (!ipv6_addr_cmp(&np->rcv_saddr, loc_addr))
98 inet6_mc_check(sk, loc_addr, rmt_addr))
113 static __inline__ int icmpv6_filter(struct sock *sk, struct sk_buff *skb)
115 struct icmp6hdr *icmph;
116 struct raw6_opt *opt = raw6_sk(sk);
118 if (pskb_may_pull(skb, sizeof(struct icmp6hdr))) {
119 __u32 *data = &opt->filter.data[0];
122 icmph = (struct icmp6hdr *) skb->data;
123 bit_nr = icmph->icmp6_type;
125 return (data[bit_nr >> 5] & (1 << (bit_nr & 31))) != 0;
131 * demultiplex raw sockets.
132 * (should consider queueing the skb in the sock receive_queue
133 * without calling rawv6.c)
135 * Caller owns SKB so we must make clones.
137 void ipv6_raw_deliver(struct sk_buff *skb, int nexthdr)
139 struct in6_addr *saddr;
140 struct in6_addr *daddr;
144 saddr = &skb->nh.ipv6h->saddr;
147 hash = nexthdr & (MAX_INET_PROTOS - 1);
149 read_lock(&raw_v6_lock);
150 sk = sk_head(&raw_v6_htable[hash]);
153 * The first socket found will be delivered after
154 * delivery to transport protocols.
160 sk = __raw_v6_lookup(sk, nexthdr, daddr, saddr);
163 if (nexthdr != IPPROTO_ICMPV6 || !icmpv6_filter(sk, skb)) {
164 struct sk_buff *clone = skb_clone(skb, GFP_ATOMIC);
166 /* Not releasing hash table! */
168 rawv6_rcv(sk, clone);
170 sk = __raw_v6_lookup(sk_next(sk), nexthdr, daddr, saddr);
173 read_unlock(&raw_v6_lock);
176 /* This cleans up af_inet6 a bit. -DaveM */
177 static int rawv6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
179 struct inet_opt *inet = inet_sk(sk);
180 struct ipv6_pinfo *np = inet6_sk(sk);
181 struct sockaddr_in6 *addr = (struct sockaddr_in6 *) uaddr;
186 if (addr_len < SIN6_LEN_RFC2133)
188 addr_type = ipv6_addr_type(&addr->sin6_addr);
190 /* Raw sockets are IPv6 only */
191 if (addr_type == IPV6_ADDR_MAPPED)
192 return(-EADDRNOTAVAIL);
197 if (sk->sk_state != TCP_CLOSE)
200 /* Check if the address belongs to the host. */
201 if (addr_type != IPV6_ADDR_ANY) {
202 struct net_device *dev = NULL;
204 if (addr_type & IPV6_ADDR_LINKLOCAL) {
205 if (addr_len >= sizeof(struct sockaddr_in6) &&
206 addr->sin6_scope_id) {
207 /* Override any existing binding, if another
208 * one is supplied by user.
210 sk->sk_bound_dev_if = addr->sin6_scope_id;
213 /* Binding to link-local address requires an interface */
214 if (!sk->sk_bound_dev_if)
217 dev = dev_get_by_index(sk->sk_bound_dev_if);
224 /* ipv4 addr of the socket is invalid. Only the
225 * unspecified and mapped address have a v4 equivalent.
227 v4addr = LOOPBACK4_IPV6;
228 if (!(addr_type & IPV6_ADDR_MULTICAST)) {
229 err = -EADDRNOTAVAIL;
230 if (!ipv6_chk_addr(&addr->sin6_addr, dev, 0)) {
240 inet->rcv_saddr = inet->saddr = v4addr;
241 ipv6_addr_copy(&np->rcv_saddr, &addr->sin6_addr);
242 if (!(addr_type & IPV6_ADDR_MULTICAST))
243 ipv6_addr_copy(&np->saddr, &addr->sin6_addr);
250 void rawv6_err(struct sock *sk, struct sk_buff *skb,
251 struct inet6_skb_parm *opt,
252 int type, int code, int offset, u32 info)
254 struct inet_opt *inet = inet_sk(sk);
255 struct ipv6_pinfo *np = inet6_sk(sk);
259 /* Report error on raw socket, if:
260 1. User requested recverr.
261 2. Socket is connected (otherwise the error indication
262 is useless without recverr and error is hard.
264 if (!np->recverr && sk->sk_state != TCP_ESTABLISHED)
267 harderr = icmpv6_err_convert(type, code, &err);
268 if (type == ICMPV6_PKT_TOOBIG)
269 harderr = (np->pmtudisc == IPV6_PMTUDISC_DO);
272 u8 *payload = skb->data;
275 ipv6_icmp_error(sk, skb, err, 0, ntohl(info), payload);
278 if (np->recverr || harderr) {
280 sk->sk_error_report(sk);
284 static inline int rawv6_rcv_skb(struct sock * sk, struct sk_buff * skb)
286 if (sk->sk_filter && skb->ip_summed != CHECKSUM_UNNECESSARY) {
287 if ((unsigned short)csum_fold(skb_checksum(skb, 0, skb->len, skb->csum))) {
288 /* FIXME: increment a raw6 drops counter here */
292 skb->ip_summed = CHECKSUM_UNNECESSARY;
295 /* Charge it to the socket. */
296 if (sock_queue_rcv_skb(sk,skb)<0) {
297 /* FIXME: increment a raw6 drops counter here */
306 * This is next to useless...
307 * if we demultiplex in network layer we don't need the extra call
308 * just to queue the skb...
309 * maybe we could have the network decide upon a hint if it
310 * should call raw_rcv for demultiplexing
312 int rawv6_rcv(struct sock *sk, struct sk_buff *skb)
314 struct inet_opt *inet = inet_sk(sk);
315 struct raw6_opt *raw_opt = raw6_sk(sk);
317 if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb)) {
322 if (!raw_opt->checksum)
323 skb->ip_summed = CHECKSUM_UNNECESSARY;
325 if (skb->ip_summed != CHECKSUM_UNNECESSARY) {
326 if (skb->ip_summed == CHECKSUM_HW) {
327 skb->ip_summed = CHECKSUM_UNNECESSARY;
328 if (csum_ipv6_magic(&skb->nh.ipv6h->saddr,
329 &skb->nh.ipv6h->daddr,
330 skb->len, inet->num, skb->csum)) {
332 printk(KERN_DEBUG "raw v6 hw csum failure.\n"));
333 skb->ip_summed = CHECKSUM_NONE;
336 if (skb->ip_summed == CHECKSUM_NONE)
337 skb->csum = ~csum_ipv6_magic(&skb->nh.ipv6h->saddr,
338 &skb->nh.ipv6h->daddr,
339 skb->len, inet->num, 0);
343 if (skb->ip_summed != CHECKSUM_UNNECESSARY &&
344 (unsigned short)csum_fold(skb_checksum(skb, 0, skb->len, skb->csum))) {
345 /* FIXME: increment a raw6 drops counter here */
349 skb->ip_summed = CHECKSUM_UNNECESSARY;
352 rawv6_rcv_skb(sk, skb);
358 * This should be easy, if there is something there
359 * we return it, otherwise we block.
362 static int rawv6_recvmsg(struct kiocb *iocb, struct sock *sk,
363 struct msghdr *msg, size_t len,
364 int noblock, int flags, int *addr_len)
366 struct ipv6_pinfo *np = inet6_sk(sk);
367 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)msg->msg_name;
376 *addr_len=sizeof(*sin6);
378 if (flags & MSG_ERRQUEUE)
379 return ipv6_recv_error(sk, msg, len);
381 skb = skb_recv_datagram(sk, flags, noblock, &err);
388 msg->msg_flags |= MSG_TRUNC;
391 if (skb->ip_summed==CHECKSUM_UNNECESSARY) {
392 err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
393 } else if (msg->msg_flags&MSG_TRUNC) {
394 if ((unsigned short)csum_fold(skb_checksum(skb, 0, skb->len, skb->csum)))
396 err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
398 err = skb_copy_and_csum_datagram_iovec(skb, 0, msg->msg_iov);
405 /* Copy the address. */
407 sin6->sin6_family = AF_INET6;
408 ipv6_addr_copy(&sin6->sin6_addr, &skb->nh.ipv6h->saddr);
409 sin6->sin6_flowinfo = 0;
410 sin6->sin6_scope_id = 0;
411 if (ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL) {
412 struct inet6_skb_parm *opt = (struct inet6_skb_parm *) skb->cb;
413 sin6->sin6_scope_id = opt->iif;
417 sock_recv_timestamp(msg, sk, skb);
420 datagram_recv_ctl(sk, msg, skb);
424 skb_free_datagram(sk, skb);
430 if (flags&MSG_PEEK) {
432 spin_lock_irq(&sk->sk_receive_queue.lock);
433 if (skb == skb_peek(&sk->sk_receive_queue)) {
434 __skb_unlink(skb, &sk->sk_receive_queue);
437 spin_unlock_irq(&sk->sk_receive_queue.lock);
442 /* Error for blocking case is chosen to masquerade
443 as some normal condition.
445 err = (flags&MSG_DONTWAIT) ? -EAGAIN : -EHOSTUNREACH;
446 /* FIXME: increment a raw6 drops counter here */
450 static int rawv6_push_pending_frames(struct sock *sk, struct flowi *fl, struct raw6_opt *opt, int len)
456 if ((skb = skb_peek(&sk->sk_write_queue)) == NULL)
459 if (opt->offset + 1 < len)
460 csum = (u16 *)(skb->h.raw + opt->offset);
466 if (skb_queue_len(&sk->sk_write_queue) == 1) {
468 * Only one fragment on the socket.
470 /* should be check HW csum miyazawa */
471 *csum = csum_ipv6_magic(&fl->fl6_src,
473 len, fl->proto, skb->csum);
477 skb_queue_walk(&sk->sk_write_queue, skb) {
478 tmp_csum = csum_add(tmp_csum, skb->csum);
481 tmp_csum = csum_ipv6_magic(&fl->fl6_src,
483 len, fl->proto, tmp_csum);
488 ip6_push_pending_frames(sk);
493 static int rawv6_send_hdrinc(struct sock *sk, void *from, int length,
494 struct flowi *fl, struct rt6_info *rt,
497 struct inet_opt *inet = inet_sk(sk);
503 if (length > rt->u.dst.dev->mtu) {
504 ipv6_local_error(sk, EMSGSIZE, fl, rt->u.dst.dev->mtu);
510 hh_len = LL_RESERVED_SPACE(rt->u.dst.dev);
512 skb = sock_alloc_send_skb(sk, length+hh_len+15,
513 flags&MSG_DONTWAIT, &err);
516 skb_reserve(skb, hh_len);
518 skb->priority = sk->sk_priority;
519 skb->dst = dst_clone(&rt->u.dst);
521 skb->nh.ipv6h = iph = (struct ipv6hdr *)skb_put(skb, length);
523 skb->ip_summed = CHECKSUM_NONE;
525 skb->h.raw = skb->nh.raw;
526 err = memcpy_fromiovecend((void *)iph, from, 0, length);
530 IP6_INC_STATS(Ip6OutRequests);
531 err = NF_HOOK(PF_INET6, NF_IP6_LOCAL_OUT, skb, NULL, rt->u.dst.dev,
534 err = inet->recverr ? net_xmit_errno(err) : 0;
544 IP6_INC_STATS(Ip6OutDiscards);
547 static int rawv6_sendmsg(struct kiocb *iocb, struct sock *sk,
548 struct msghdr *msg, size_t len)
550 struct ipv6_txoptions opt_space;
551 struct sockaddr_in6 * sin6 = (struct sockaddr_in6 *) msg->msg_name;
552 struct in6_addr *daddr;
553 struct inet_opt *inet = inet_sk(sk);
554 struct ipv6_pinfo *np = inet6_sk(sk);
555 struct raw6_opt *raw_opt = raw6_sk(sk);
556 struct ipv6_txoptions *opt = NULL;
557 struct ip6_flowlabel *flowlabel = NULL;
558 struct dst_entry *dst = NULL;
560 int addr_len = msg->msg_namelen;
565 /* Rough check on arithmetic overflow,
566 better check is made in ip6_build_xmit
571 /* Mirror BSD error message compatibility */
572 if (msg->msg_flags & MSG_OOB)
576 * Get and verify the address.
578 memset(&fl, 0, sizeof(fl));
581 if (addr_len < SIN6_LEN_RFC2133)
584 if (sin6->sin6_family && sin6->sin6_family != AF_INET6)
587 /* port is the proto value [0..255] carried in nexthdr */
588 proto = ntohs(sin6->sin6_port);
592 else if (proto != inet->num)
598 daddr = &sin6->sin6_addr;
600 fl.fl6_flowlabel = sin6->sin6_flowinfo&IPV6_FLOWINFO_MASK;
601 if (fl.fl6_flowlabel&IPV6_FLOWLABEL_MASK) {
602 flowlabel = fl6_sock_lookup(sk, fl.fl6_flowlabel);
603 if (flowlabel == NULL)
605 daddr = &flowlabel->dst;
610 * Otherwise it will be difficult to maintain
613 if (sk->sk_state == TCP_ESTABLISHED &&
614 !ipv6_addr_cmp(daddr, &np->daddr))
617 if (addr_len >= sizeof(struct sockaddr_in6) &&
618 sin6->sin6_scope_id &&
619 ipv6_addr_type(daddr)&IPV6_ADDR_LINKLOCAL)
620 fl.oif = sin6->sin6_scope_id;
622 if (sk->sk_state != TCP_ESTABLISHED)
623 return -EDESTADDRREQ;
627 fl.fl6_flowlabel = np->flow_label;
630 if (ipv6_addr_any(daddr)) {
632 * unspecified destination address
633 * treated as error... is this correct ?
635 fl6_sock_release(flowlabel);
640 fl.oif = sk->sk_bound_dev_if;
642 if (msg->msg_controllen) {
644 memset(opt, 0, sizeof(struct ipv6_txoptions));
645 opt->tot_len = sizeof(struct ipv6_txoptions);
647 err = datagram_send_ctl(msg, &fl, opt, &hlimit);
649 fl6_sock_release(flowlabel);
652 if ((fl.fl6_flowlabel&IPV6_FLOWLABEL_MASK) && !flowlabel) {
653 flowlabel = fl6_sock_lookup(sk, fl.fl6_flowlabel);
654 if (flowlabel == NULL)
657 if (!(opt->opt_nflen|opt->opt_flen))
663 opt = fl6_merge_options(&opt_space, flowlabel, opt);
666 ipv6_addr_copy(&fl.fl6_dst, daddr);
667 if (ipv6_addr_any(&fl.fl6_src) && !ipv6_addr_any(&np->saddr))
668 ipv6_addr_copy(&fl.fl6_src, &np->saddr);
670 /* merge ip6_build_xmit from ip6_output */
671 if (opt && opt->srcrt) {
672 struct rt0_hdr *rt0 = (struct rt0_hdr *) opt->srcrt;
673 ipv6_addr_copy(&fl.fl6_dst, rt0->addr);
676 if (!fl.oif && ipv6_addr_is_multicast(&fl.fl6_dst))
677 fl.oif = np->mcast_oif;
679 err = ip6_dst_lookup(sk, &dst, &fl);
684 if (ipv6_addr_is_multicast(&fl.fl6_dst))
685 hlimit = np->mcast_hops;
687 hlimit = np->hop_limit;
689 hlimit = dst_metric(dst, RTAX_HOPLIMIT);
692 if (msg->msg_flags&MSG_CONFIRM)
697 err = rawv6_send_hdrinc(sk, msg->msg_iov, len, &fl, (struct rt6_info*)dst, msg->msg_flags);
700 err = ip6_append_data(sk, ip_generic_getfrag, msg->msg_iov, len, 0,
701 hlimit, opt, &fl, (struct rt6_info*)dst, msg->msg_flags);
704 ip6_flush_pending_frames(sk);
705 else if (!(msg->msg_flags & MSG_MORE)) {
706 if (raw_opt->checksum) {
707 err = rawv6_push_pending_frames(sk, &fl, raw_opt, len);
709 err = ip6_push_pending_frames(sk);
714 ip6_dst_store(sk, dst,
715 !ipv6_addr_cmp(&fl.fl6_dst, &np->daddr) ?
718 err = np->recverr ? net_xmit_errno(err) : 0;
722 fl6_sock_release(flowlabel);
723 return err<0?err:len;
726 if (!(msg->msg_flags & MSG_PROBE) || len)
727 goto back_from_confirm;
732 static int rawv6_seticmpfilter(struct sock *sk, int level, int optname,
733 char *optval, int optlen)
737 if (optlen > sizeof(struct icmp6_filter))
738 optlen = sizeof(struct icmp6_filter);
739 if (copy_from_user(&raw6_sk(sk)->filter, optval, optlen))
749 static int rawv6_geticmpfilter(struct sock *sk, int level, int optname,
750 char *optval, int *optlen)
756 if (get_user(len, optlen))
760 if (len > sizeof(struct icmp6_filter))
761 len = sizeof(struct icmp6_filter);
762 if (put_user(len, optlen))
764 if (copy_to_user(optval, &raw6_sk(sk)->filter, len))
775 static int rawv6_setsockopt(struct sock *sk, int level, int optname,
776 char *optval, int optlen)
778 struct raw6_opt *opt = raw6_sk(sk);
786 if (inet_sk(sk)->num != IPPROTO_ICMPV6)
788 return rawv6_seticmpfilter(sk, level, optname, optval,
791 if (optname == IPV6_CHECKSUM)
794 return ipv6_setsockopt(sk, level, optname, optval,
798 if (get_user(val, (int *)optval))
803 /* You may get strange result with a positive odd offset;
804 RFC2292bis agrees with me. */
805 if (val > 0 && (val&1))
818 return(-ENOPROTOOPT);
822 static int rawv6_getsockopt(struct sock *sk, int level, int optname,
823 char *optval, int *optlen)
825 struct raw6_opt *opt = raw6_sk(sk);
833 if (inet_sk(sk)->num != IPPROTO_ICMPV6)
835 return rawv6_geticmpfilter(sk, level, optname, optval,
838 if (optname == IPV6_CHECKSUM)
841 return ipv6_getsockopt(sk, level, optname, optval,
845 if (get_user(len,optlen))
850 if (opt->checksum == 0)
860 len = min_t(unsigned int, sizeof(int), len);
862 if (put_user(len, optlen))
864 if (copy_to_user(optval,&val,len))
869 static int rawv6_ioctl(struct sock *sk, int cmd, unsigned long arg)
874 int amount = atomic_read(&sk->sk_wmem_alloc);
875 return put_user(amount, (int *)arg);
882 spin_lock_irq(&sk->sk_receive_queue.lock);
883 skb = skb_peek(&sk->sk_receive_queue);
885 amount = skb->tail - skb->h.raw;
886 spin_unlock_irq(&sk->sk_receive_queue.lock);
887 return put_user(amount, (int *)arg);
895 static void rawv6_close(struct sock *sk, long timeout)
897 if (inet_sk(sk)->num == IPPROTO_RAW)
898 ip6_ra_control(sk, -1, NULL);
900 inet_sock_release(sk);
903 static int rawv6_init_sk(struct sock *sk)
905 if (inet_sk(sk)->num == IPPROTO_ICMPV6) {
906 struct raw6_opt *opt = raw6_sk(sk);
913 struct proto rawv6_prot = {
915 .close = rawv6_close,
916 .connect = udpv6_connect,
917 .disconnect = udp_disconnect,
918 .ioctl = rawv6_ioctl,
919 .init = rawv6_init_sk,
920 .destroy = inet6_destroy_sock,
921 .setsockopt = rawv6_setsockopt,
922 .getsockopt = rawv6_getsockopt,
923 .sendmsg = rawv6_sendmsg,
924 .recvmsg = rawv6_recvmsg,
926 .backlog_rcv = rawv6_rcv_skb,
928 .unhash = raw_v6_unhash,
931 #ifdef CONFIG_PROC_FS
932 struct raw6_iter_state {
936 #define raw6_seq_private(seq) ((struct raw6_iter_state *)(seq)->private)
938 static struct sock *raw6_get_first(struct seq_file *seq)
941 struct hlist_node *node;
942 struct raw6_iter_state* state = raw6_seq_private(seq);
944 for (state->bucket = 0; state->bucket < RAWV6_HTABLE_SIZE; ++state->bucket)
945 sk_for_each(sk, node, &raw_v6_htable[state->bucket])
946 if (sk->sk_family == PF_INET6)
953 static struct sock *raw6_get_next(struct seq_file *seq, struct sock *sk)
955 struct raw6_iter_state* state = raw6_seq_private(seq);
961 } while (sk && sk->sk_family != PF_INET6);
963 if (!sk && ++state->bucket < RAWV6_HTABLE_SIZE) {
964 sk = sk_head(&raw_v6_htable[state->bucket]);
970 static struct sock *raw6_get_idx(struct seq_file *seq, loff_t pos)
972 struct sock *sk = raw6_get_first(seq);
974 while (pos && (sk = raw6_get_next(seq, sk)) != NULL)
976 return pos ? NULL : sk;
979 static void *raw6_seq_start(struct seq_file *seq, loff_t *pos)
981 read_lock(&raw_v6_lock);
982 return *pos ? raw6_get_idx(seq, *pos - 1) : SEQ_START_TOKEN;
985 static void *raw6_seq_next(struct seq_file *seq, void *v, loff_t *pos)
989 if (v == SEQ_START_TOKEN)
990 sk = raw6_get_first(seq);
992 sk = raw6_get_next(seq, v);
997 static void raw6_seq_stop(struct seq_file *seq, void *v)
999 read_unlock(&raw_v6_lock);
1002 static void raw6_sock_seq_show(struct seq_file *seq, struct sock *sp, int i)
1004 struct ipv6_pinfo *np = inet6_sk(sp);
1005 struct in6_addr *dest, *src;
1009 src = &np->rcv_saddr;
1011 srcp = inet_sk(sp)->num;
1013 "%4d: %08X%08X%08X%08X:%04X %08X%08X%08X%08X:%04X "
1014 "%02X %08X:%08X %02X:%08lX %08X %5d %8d %lu %d %p\n",
1016 src->s6_addr32[0], src->s6_addr32[1],
1017 src->s6_addr32[2], src->s6_addr32[3], srcp,
1018 dest->s6_addr32[0], dest->s6_addr32[1],
1019 dest->s6_addr32[2], dest->s6_addr32[3], destp,
1021 atomic_read(&sp->sk_wmem_alloc),
1022 atomic_read(&sp->sk_rmem_alloc),
1026 atomic_read(&sp->sk_refcnt), sp);
1029 static int raw6_seq_show(struct seq_file *seq, void *v)
1031 if (v == SEQ_START_TOKEN)
1036 "st tx_queue rx_queue tr tm->when retrnsmt"
1037 " uid timeout inode\n");
1039 raw6_sock_seq_show(seq, v, raw6_seq_private(seq)->bucket);
1043 static struct seq_operations raw6_seq_ops = {
1044 .start = raw6_seq_start,
1045 .next = raw6_seq_next,
1046 .stop = raw6_seq_stop,
1047 .show = raw6_seq_show,
1050 static int raw6_seq_open(struct inode *inode, struct file *file)
1052 struct seq_file *seq;
1054 struct raw6_iter_state *s = kmalloc(sizeof(*s), GFP_KERNEL);
1057 rc = seq_open(file, &raw6_seq_ops);
1060 seq = file->private_data;
1062 memset(s, 0, sizeof(*s));
1070 static struct file_operations raw6_seq_fops = {
1071 .owner = THIS_MODULE,
1072 .open = raw6_seq_open,
1074 .llseek = seq_lseek,
1075 .release = seq_release_private,
1078 int __init raw6_proc_init(void)
1080 if (!proc_net_fops_create("raw6", S_IRUGO, &raw6_seq_fops))
1085 void raw6_proc_exit(void)
1087 proc_net_remove("raw6");
1089 #endif /* CONFIG_PROC_FS */