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>
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>
54 #include <net/rawv6.h>
57 #include <linux/proc_fs.h>
58 #include <linux/seq_file.h>
60 struct hlist_head raw_v6_htable[RAWV6_HTABLE_SIZE];
61 DEFINE_RWLOCK(raw_v6_lock);
63 static void raw_v6_hash(struct sock *sk)
65 struct hlist_head *list = &raw_v6_htable[inet_sk(sk)->num &
66 (RAWV6_HTABLE_SIZE - 1)];
68 write_lock_bh(&raw_v6_lock);
69 sk_add_node(sk, list);
70 sock_prot_inc_use(sk->sk_prot);
71 write_unlock_bh(&raw_v6_lock);
74 static void raw_v6_unhash(struct sock *sk)
76 write_lock_bh(&raw_v6_lock);
77 if (sk_del_node_init(sk))
78 sock_prot_dec_use(sk->sk_prot);
79 write_unlock_bh(&raw_v6_lock);
83 /* Grumble... icmp and ip_input want to get at this... */
84 struct sock *__raw_v6_lookup(struct sock *sk, unsigned short num,
85 struct in6_addr *loc_addr, struct in6_addr *rmt_addr,
88 struct hlist_node *node;
89 int is_multicast = ipv6_addr_is_multicast(loc_addr);
91 sk_for_each_from(sk, node)
92 if (inet_sk(sk)->num == num) {
93 struct ipv6_pinfo *np = inet6_sk(sk);
95 if (!ipv6_addr_any(&np->daddr) &&
96 !ipv6_addr_equal(&np->daddr, rmt_addr))
99 if (sk->sk_bound_dev_if && sk->sk_bound_dev_if != dif)
102 if (!ipv6_addr_any(&np->rcv_saddr)) {
103 if (ipv6_addr_equal(&np->rcv_saddr, loc_addr))
106 inet6_mc_check(sk, loc_addr, rmt_addr))
121 static __inline__ int icmpv6_filter(struct sock *sk, struct sk_buff *skb)
123 struct icmp6hdr *icmph;
124 struct raw6_sock *rp = raw6_sk(sk);
126 if (pskb_may_pull(skb, sizeof(struct icmp6hdr))) {
127 __u32 *data = &rp->filter.data[0];
130 icmph = (struct icmp6hdr *) skb->data;
131 bit_nr = icmph->icmp6_type;
133 return (data[bit_nr >> 5] & (1 << (bit_nr & 31))) != 0;
139 * demultiplex raw sockets.
140 * (should consider queueing the skb in the sock receive_queue
141 * without calling rawv6.c)
143 * Caller owns SKB so we must make clones.
145 int ipv6_raw_deliver(struct sk_buff *skb, int nexthdr)
147 struct in6_addr *saddr;
148 struct in6_addr *daddr;
153 saddr = &skb->nh.ipv6h->saddr;
156 hash = nexthdr & (MAX_INET_PROTOS - 1);
158 read_lock(&raw_v6_lock);
159 sk = sk_head(&raw_v6_htable[hash]);
162 * The first socket found will be delivered after
163 * delivery to transport protocols.
169 sk = __raw_v6_lookup(sk, nexthdr, daddr, saddr, IP6CB(skb)->iif);
173 if (nexthdr != IPPROTO_ICMPV6 || !icmpv6_filter(sk, skb)) {
174 struct sk_buff *clone = skb_clone(skb, GFP_ATOMIC);
176 /* Not releasing hash table! */
179 rawv6_rcv(sk, clone);
182 sk = __raw_v6_lookup(sk_next(sk), nexthdr, daddr, saddr,
186 read_unlock(&raw_v6_lock);
190 /* This cleans up af_inet6 a bit. -DaveM */
191 static int rawv6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
193 struct inet_sock *inet = inet_sk(sk);
194 struct ipv6_pinfo *np = inet6_sk(sk);
195 struct sockaddr_in6 *addr = (struct sockaddr_in6 *) uaddr;
200 if (addr_len < SIN6_LEN_RFC2133)
202 addr_type = ipv6_addr_type(&addr->sin6_addr);
204 /* Raw sockets are IPv6 only */
205 if (addr_type == IPV6_ADDR_MAPPED)
206 return(-EADDRNOTAVAIL);
211 if (sk->sk_state != TCP_CLOSE)
214 /* Check if the address belongs to the host. */
215 if (addr_type != IPV6_ADDR_ANY) {
216 struct net_device *dev = NULL;
218 if (addr_type & IPV6_ADDR_LINKLOCAL) {
219 if (addr_len >= sizeof(struct sockaddr_in6) &&
220 addr->sin6_scope_id) {
221 /* Override any existing binding, if another
222 * one is supplied by user.
224 sk->sk_bound_dev_if = addr->sin6_scope_id;
227 /* Binding to link-local address requires an interface */
228 if (!sk->sk_bound_dev_if)
231 dev = dev_get_by_index(sk->sk_bound_dev_if);
238 /* ipv4 addr of the socket is invalid. Only the
239 * unspecified and mapped address have a v4 equivalent.
241 v4addr = LOOPBACK4_IPV6;
242 if (!(addr_type & IPV6_ADDR_MULTICAST)) {
243 err = -EADDRNOTAVAIL;
244 if (!ipv6_chk_addr(&addr->sin6_addr, dev, 0)) {
254 inet->rcv_saddr = inet->saddr = v4addr;
255 ipv6_addr_copy(&np->rcv_saddr, &addr->sin6_addr);
256 if (!(addr_type & IPV6_ADDR_MULTICAST))
257 ipv6_addr_copy(&np->saddr, &addr->sin6_addr);
264 void rawv6_err(struct sock *sk, struct sk_buff *skb,
265 struct inet6_skb_parm *opt,
266 int type, int code, int offset, u32 info)
268 struct inet_sock *inet = inet_sk(sk);
269 struct ipv6_pinfo *np = inet6_sk(sk);
273 /* Report error on raw socket, if:
274 1. User requested recverr.
275 2. Socket is connected (otherwise the error indication
276 is useless without recverr and error is hard.
278 if (!np->recverr && sk->sk_state != TCP_ESTABLISHED)
281 harderr = icmpv6_err_convert(type, code, &err);
282 if (type == ICMPV6_PKT_TOOBIG)
283 harderr = (np->pmtudisc == IPV6_PMTUDISC_DO);
286 u8 *payload = skb->data;
289 ipv6_icmp_error(sk, skb, err, 0, ntohl(info), payload);
292 if (np->recverr || harderr) {
294 sk->sk_error_report(sk);
298 static inline int rawv6_rcv_skb(struct sock * sk, struct sk_buff * skb)
300 if ((raw6_sk(sk)->checksum || sk->sk_filter) &&
301 skb_checksum_complete(skb)) {
302 /* FIXME: increment a raw6 drops counter here */
307 /* Charge it to the socket. */
308 if (sock_queue_rcv_skb(sk,skb)<0) {
309 /* FIXME: increment a raw6 drops counter here */
318 * This is next to useless...
319 * if we demultiplex in network layer we don't need the extra call
320 * just to queue the skb...
321 * maybe we could have the network decide upon a hint if it
322 * should call raw_rcv for demultiplexing
324 int rawv6_rcv(struct sock *sk, struct sk_buff *skb)
326 struct inet_sock *inet = inet_sk(sk);
327 struct raw6_sock *rp = raw6_sk(sk);
329 if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb)) {
335 skb->ip_summed = CHECKSUM_UNNECESSARY;
337 if (skb->ip_summed == CHECKSUM_HW) {
338 skb_postpull_rcsum(skb, skb->nh.raw,
339 skb->h.raw - skb->nh.raw);
340 if (!csum_ipv6_magic(&skb->nh.ipv6h->saddr,
341 &skb->nh.ipv6h->daddr,
342 skb->len, inet->num, skb->csum))
343 skb->ip_summed = CHECKSUM_UNNECESSARY;
345 if (skb->ip_summed != CHECKSUM_UNNECESSARY)
346 skb->csum = ~csum_ipv6_magic(&skb->nh.ipv6h->saddr,
347 &skb->nh.ipv6h->daddr,
348 skb->len, inet->num, 0);
351 if (skb_checksum_complete(skb)) {
352 /* FIXME: increment a raw6 drops counter here */
358 rawv6_rcv_skb(sk, skb);
364 * This should be easy, if there is something there
365 * we return it, otherwise we block.
368 static int rawv6_recvmsg(struct kiocb *iocb, struct sock *sk,
369 struct msghdr *msg, size_t len,
370 int noblock, int flags, int *addr_len)
372 struct ipv6_pinfo *np = inet6_sk(sk);
373 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)msg->msg_name;
382 *addr_len=sizeof(*sin6);
384 if (flags & MSG_ERRQUEUE)
385 return ipv6_recv_error(sk, msg, len);
387 skb = skb_recv_datagram(sk, flags, noblock, &err);
394 msg->msg_flags |= MSG_TRUNC;
397 if (skb->ip_summed==CHECKSUM_UNNECESSARY) {
398 err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
399 } else if (msg->msg_flags&MSG_TRUNC) {
400 if (__skb_checksum_complete(skb))
402 err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
404 err = skb_copy_and_csum_datagram_iovec(skb, 0, msg->msg_iov);
411 /* Copy the address. */
413 sin6->sin6_family = AF_INET6;
414 ipv6_addr_copy(&sin6->sin6_addr, &skb->nh.ipv6h->saddr);
415 sin6->sin6_flowinfo = 0;
416 sin6->sin6_scope_id = 0;
417 if (ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL)
418 sin6->sin6_scope_id = IP6CB(skb)->iif;
421 sock_recv_timestamp(msg, sk, skb);
424 datagram_recv_ctl(sk, msg, skb);
427 if (flags & MSG_TRUNC)
431 skb_free_datagram(sk, skb);
436 skb_kill_datagram(sk, skb, flags);
438 /* Error for blocking case is chosen to masquerade
439 as some normal condition.
441 err = (flags&MSG_DONTWAIT) ? -EAGAIN : -EHOSTUNREACH;
442 /* FIXME: increment a raw6 drops counter here */
446 static int rawv6_push_pending_frames(struct sock *sk, struct flowi *fl,
447 struct raw6_sock *rp)
460 if ((skb = skb_peek(&sk->sk_write_queue)) == NULL)
464 total_len = inet_sk(sk)->cork.length - (skb->nh.raw - skb->data);
465 if (offset >= total_len - 1) {
467 ip6_flush_pending_frames(sk);
471 /* should be check HW csum miyazawa */
472 if (skb_queue_len(&sk->sk_write_queue) == 1) {
474 * Only one fragment on the socket.
476 tmp_csum = skb->csum;
478 struct sk_buff *csum_skb = NULL;
481 skb_queue_walk(&sk->sk_write_queue, skb) {
482 tmp_csum = csum_add(tmp_csum, skb->csum);
487 len = skb->len - (skb->h.raw - skb->data);
499 offset += skb->h.raw - skb->data;
500 if (skb_copy_bits(skb, offset, &csum, 2))
503 /* in case cksum was not initialized */
505 tmp_csum = csum_sub(tmp_csum, csum);
507 tmp_csum = csum_ipv6_magic(&fl->fl6_src,
509 total_len, fl->proto, tmp_csum);
515 if (skb_store_bits(skb, offset, &csum, 2))
519 err = ip6_push_pending_frames(sk);
524 static int rawv6_send_hdrinc(struct sock *sk, void *from, int length,
525 struct flowi *fl, struct rt6_info *rt,
528 struct ipv6_pinfo *np = inet6_sk(sk);
534 if (length > rt->u.dst.dev->mtu) {
535 ipv6_local_error(sk, EMSGSIZE, fl, rt->u.dst.dev->mtu);
541 hh_len = LL_RESERVED_SPACE(rt->u.dst.dev);
543 skb = sock_alloc_send_skb(sk, length+hh_len+15,
544 flags&MSG_DONTWAIT, &err);
547 skb_reserve(skb, hh_len);
549 skb->priority = sk->sk_priority;
550 skb->dst = dst_clone(&rt->u.dst);
552 skb->nh.ipv6h = iph = (struct ipv6hdr *)skb_put(skb, length);
554 skb->ip_summed = CHECKSUM_NONE;
556 skb->h.raw = skb->nh.raw;
557 err = memcpy_fromiovecend((void *)iph, from, 0, length);
561 IP6_INC_STATS(IPSTATS_MIB_OUTREQUESTS);
562 err = NF_HOOK(PF_INET6, NF_IP6_LOCAL_OUT, skb, NULL, rt->u.dst.dev,
565 err = np->recverr ? net_xmit_errno(err) : 0;
575 IP6_INC_STATS(IPSTATS_MIB_OUTDISCARDS);
579 static void rawv6_probe_proto_opt(struct flowi *fl, struct msghdr *msg)
582 u8 __user *type = NULL;
583 u8 __user *code = NULL;
590 for (i = 0; i < msg->msg_iovlen; i++) {
591 iov = &msg->msg_iov[i];
597 /* check if one-byte field is readable or not. */
598 if (iov->iov_base && iov->iov_len < 1)
602 type = iov->iov_base;
603 /* check if code field is readable or not. */
604 if (iov->iov_len > 1)
607 code = iov->iov_base;
610 get_user(fl->fl_icmp_type, type);
611 get_user(fl->fl_icmp_code, code);
624 static int rawv6_sendmsg(struct kiocb *iocb, struct sock *sk,
625 struct msghdr *msg, size_t len)
627 struct ipv6_txoptions opt_space;
628 struct sockaddr_in6 * sin6 = (struct sockaddr_in6 *) msg->msg_name;
629 struct in6_addr *daddr, *final_p = NULL, final;
630 struct inet_sock *inet = inet_sk(sk);
631 struct ipv6_pinfo *np = inet6_sk(sk);
632 struct raw6_sock *rp = raw6_sk(sk);
633 struct ipv6_txoptions *opt = NULL;
634 struct ip6_flowlabel *flowlabel = NULL;
635 struct dst_entry *dst = NULL;
637 int addr_len = msg->msg_namelen;
643 /* Rough check on arithmetic overflow,
644 better check is made in ip6_append_data().
649 /* Mirror BSD error message compatibility */
650 if (msg->msg_flags & MSG_OOB)
654 * Get and verify the address.
656 memset(&fl, 0, sizeof(fl));
659 if (addr_len < SIN6_LEN_RFC2133)
662 if (sin6->sin6_family && sin6->sin6_family != AF_INET6)
663 return(-EAFNOSUPPORT);
665 /* port is the proto value [0..255] carried in nexthdr */
666 proto = ntohs(sin6->sin6_port);
670 else if (proto != inet->num)
676 daddr = &sin6->sin6_addr;
678 fl.fl6_flowlabel = sin6->sin6_flowinfo&IPV6_FLOWINFO_MASK;
679 if (fl.fl6_flowlabel&IPV6_FLOWLABEL_MASK) {
680 flowlabel = fl6_sock_lookup(sk, fl.fl6_flowlabel);
681 if (flowlabel == NULL)
683 daddr = &flowlabel->dst;
688 * Otherwise it will be difficult to maintain
691 if (sk->sk_state == TCP_ESTABLISHED &&
692 ipv6_addr_equal(daddr, &np->daddr))
695 if (addr_len >= sizeof(struct sockaddr_in6) &&
696 sin6->sin6_scope_id &&
697 ipv6_addr_type(daddr)&IPV6_ADDR_LINKLOCAL)
698 fl.oif = sin6->sin6_scope_id;
700 if (sk->sk_state != TCP_ESTABLISHED)
701 return -EDESTADDRREQ;
705 fl.fl6_flowlabel = np->flow_label;
708 if (ipv6_addr_any(daddr)) {
710 * unspecified destination address
711 * treated as error... is this correct ?
713 fl6_sock_release(flowlabel);
718 fl.oif = sk->sk_bound_dev_if;
720 if (msg->msg_controllen) {
722 memset(opt, 0, sizeof(struct ipv6_txoptions));
723 opt->tot_len = sizeof(struct ipv6_txoptions);
725 err = datagram_send_ctl(msg, &fl, opt, &hlimit, &tclass);
727 fl6_sock_release(flowlabel);
730 if ((fl.fl6_flowlabel&IPV6_FLOWLABEL_MASK) && !flowlabel) {
731 flowlabel = fl6_sock_lookup(sk, fl.fl6_flowlabel);
732 if (flowlabel == NULL)
735 if (!(opt->opt_nflen|opt->opt_flen))
741 opt = fl6_merge_options(&opt_space, flowlabel, opt);
742 opt = ipv6_fixup_options(&opt_space, opt);
745 rawv6_probe_proto_opt(&fl, msg);
747 ipv6_addr_copy(&fl.fl6_dst, daddr);
748 if (ipv6_addr_any(&fl.fl6_src) && !ipv6_addr_any(&np->saddr))
749 ipv6_addr_copy(&fl.fl6_src, &np->saddr);
751 /* merge ip6_build_xmit from ip6_output */
752 if (opt && opt->srcrt) {
753 struct rt0_hdr *rt0 = (struct rt0_hdr *) opt->srcrt;
754 ipv6_addr_copy(&final, &fl.fl6_dst);
755 ipv6_addr_copy(&fl.fl6_dst, rt0->addr);
759 if (!fl.oif && ipv6_addr_is_multicast(&fl.fl6_dst))
760 fl.oif = np->mcast_oif;
762 err = ip6_dst_lookup(sk, &dst, &fl);
766 ipv6_addr_copy(&fl.fl6_dst, final_p);
768 if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0)
772 if (ipv6_addr_is_multicast(&fl.fl6_dst))
773 hlimit = np->mcast_hops;
775 hlimit = np->hop_limit;
777 hlimit = dst_metric(dst, RTAX_HOPLIMIT);
779 hlimit = ipv6_get_hoplimit(dst->dev);
783 tclass = np->cork.tclass;
788 if (msg->msg_flags&MSG_CONFIRM)
793 err = rawv6_send_hdrinc(sk, msg->msg_iov, len, &fl, (struct rt6_info*)dst, msg->msg_flags);
796 err = ip6_append_data(sk, ip_generic_getfrag, msg->msg_iov,
797 len, 0, hlimit, tclass, opt, &fl, (struct rt6_info*)dst,
801 ip6_flush_pending_frames(sk);
802 else if (!(msg->msg_flags & MSG_MORE))
803 err = rawv6_push_pending_frames(sk, &fl, rp);
809 fl6_sock_release(flowlabel);
810 return err<0?err:len;
813 if (!(msg->msg_flags & MSG_PROBE) || len)
814 goto back_from_confirm;
819 static int rawv6_seticmpfilter(struct sock *sk, int level, int optname,
820 char __user *optval, int optlen)
824 if (optlen > sizeof(struct icmp6_filter))
825 optlen = sizeof(struct icmp6_filter);
826 if (copy_from_user(&raw6_sk(sk)->filter, optval, optlen))
836 static int rawv6_geticmpfilter(struct sock *sk, int level, int optname,
837 char __user *optval, int __user *optlen)
843 if (get_user(len, optlen))
847 if (len > sizeof(struct icmp6_filter))
848 len = sizeof(struct icmp6_filter);
849 if (put_user(len, optlen))
851 if (copy_to_user(optval, &raw6_sk(sk)->filter, len))
862 static int rawv6_setsockopt(struct sock *sk, int level, int optname,
863 char __user *optval, int optlen)
865 struct raw6_sock *rp = raw6_sk(sk);
873 if (inet_sk(sk)->num != IPPROTO_ICMPV6)
875 return rawv6_seticmpfilter(sk, level, optname, optval,
878 if (optname == IPV6_CHECKSUM)
881 return ipv6_setsockopt(sk, level, optname, optval,
885 if (get_user(val, (int __user *)optval))
890 /* You may get strange result with a positive odd offset;
891 RFC2292bis agrees with me. */
892 if (val > 0 && (val&1))
905 return(-ENOPROTOOPT);
909 static int rawv6_getsockopt(struct sock *sk, int level, int optname,
910 char __user *optval, int __user *optlen)
912 struct raw6_sock *rp = raw6_sk(sk);
920 if (inet_sk(sk)->num != IPPROTO_ICMPV6)
922 return rawv6_geticmpfilter(sk, level, optname, optval,
925 if (optname == IPV6_CHECKSUM)
928 return ipv6_getsockopt(sk, level, optname, optval,
932 if (get_user(len,optlen))
937 if (rp->checksum == 0)
947 len = min_t(unsigned int, sizeof(int), len);
949 if (put_user(len, optlen))
951 if (copy_to_user(optval,&val,len))
956 static int rawv6_ioctl(struct sock *sk, int cmd, unsigned long arg)
961 int amount = atomic_read(&sk->sk_wmem_alloc);
962 return put_user(amount, (int __user *)arg);
969 spin_lock_bh(&sk->sk_receive_queue.lock);
970 skb = skb_peek(&sk->sk_receive_queue);
972 amount = skb->tail - skb->h.raw;
973 spin_unlock_bh(&sk->sk_receive_queue.lock);
974 return put_user(amount, (int __user *)arg);
982 static void rawv6_close(struct sock *sk, long timeout)
984 if (inet_sk(sk)->num == IPPROTO_RAW)
985 ip6_ra_control(sk, -1, NULL);
987 sk_common_release(sk);
990 static int rawv6_init_sk(struct sock *sk)
992 if (inet_sk(sk)->num == IPPROTO_ICMPV6) {
993 struct raw6_sock *rp = raw6_sk(sk);
1000 struct proto rawv6_prot = {
1002 .owner = THIS_MODULE,
1003 .close = rawv6_close,
1004 .connect = ip6_datagram_connect,
1005 .disconnect = udp_disconnect,
1006 .ioctl = rawv6_ioctl,
1007 .init = rawv6_init_sk,
1008 .destroy = inet6_destroy_sock,
1009 .setsockopt = rawv6_setsockopt,
1010 .getsockopt = rawv6_getsockopt,
1011 .sendmsg = rawv6_sendmsg,
1012 .recvmsg = rawv6_recvmsg,
1014 .backlog_rcv = rawv6_rcv_skb,
1015 .hash = raw_v6_hash,
1016 .unhash = raw_v6_unhash,
1017 .obj_size = sizeof(struct raw6_sock),
1020 #ifdef CONFIG_PROC_FS
1021 struct raw6_iter_state {
1025 #define raw6_seq_private(seq) ((struct raw6_iter_state *)(seq)->private)
1027 static struct sock *raw6_get_first(struct seq_file *seq)
1030 struct hlist_node *node;
1031 struct raw6_iter_state* state = raw6_seq_private(seq);
1033 for (state->bucket = 0; state->bucket < RAWV6_HTABLE_SIZE; ++state->bucket)
1034 sk_for_each(sk, node, &raw_v6_htable[state->bucket])
1035 if (sk->sk_family == PF_INET6)
1042 static struct sock *raw6_get_next(struct seq_file *seq, struct sock *sk)
1044 struct raw6_iter_state* state = raw6_seq_private(seq);
1050 } while (sk && sk->sk_family != PF_INET6);
1052 if (!sk && ++state->bucket < RAWV6_HTABLE_SIZE) {
1053 sk = sk_head(&raw_v6_htable[state->bucket]);
1059 static struct sock *raw6_get_idx(struct seq_file *seq, loff_t pos)
1061 struct sock *sk = raw6_get_first(seq);
1063 while (pos && (sk = raw6_get_next(seq, sk)) != NULL)
1065 return pos ? NULL : sk;
1068 static void *raw6_seq_start(struct seq_file *seq, loff_t *pos)
1070 read_lock(&raw_v6_lock);
1071 return *pos ? raw6_get_idx(seq, *pos - 1) : SEQ_START_TOKEN;
1074 static void *raw6_seq_next(struct seq_file *seq, void *v, loff_t *pos)
1078 if (v == SEQ_START_TOKEN)
1079 sk = raw6_get_first(seq);
1081 sk = raw6_get_next(seq, v);
1086 static void raw6_seq_stop(struct seq_file *seq, void *v)
1088 read_unlock(&raw_v6_lock);
1091 static void raw6_sock_seq_show(struct seq_file *seq, struct sock *sp, int i)
1093 struct ipv6_pinfo *np = inet6_sk(sp);
1094 struct in6_addr *dest, *src;
1098 src = &np->rcv_saddr;
1100 srcp = inet_sk(sp)->num;
1102 "%4d: %08X%08X%08X%08X:%04X %08X%08X%08X%08X:%04X "
1103 "%02X %08X:%08X %02X:%08lX %08X %5d %8d %lu %d %p\n",
1105 src->s6_addr32[0], src->s6_addr32[1],
1106 src->s6_addr32[2], src->s6_addr32[3], srcp,
1107 dest->s6_addr32[0], dest->s6_addr32[1],
1108 dest->s6_addr32[2], dest->s6_addr32[3], destp,
1110 atomic_read(&sp->sk_wmem_alloc),
1111 atomic_read(&sp->sk_rmem_alloc),
1115 atomic_read(&sp->sk_refcnt), sp);
1118 static int raw6_seq_show(struct seq_file *seq, void *v)
1120 if (v == SEQ_START_TOKEN)
1125 "st tx_queue rx_queue tr tm->when retrnsmt"
1126 " uid timeout inode\n");
1128 raw6_sock_seq_show(seq, v, raw6_seq_private(seq)->bucket);
1132 static struct seq_operations raw6_seq_ops = {
1133 .start = raw6_seq_start,
1134 .next = raw6_seq_next,
1135 .stop = raw6_seq_stop,
1136 .show = raw6_seq_show,
1139 static int raw6_seq_open(struct inode *inode, struct file *file)
1141 struct seq_file *seq;
1143 struct raw6_iter_state *s = kmalloc(sizeof(*s), GFP_KERNEL);
1146 rc = seq_open(file, &raw6_seq_ops);
1149 seq = file->private_data;
1151 memset(s, 0, sizeof(*s));
1159 static struct file_operations raw6_seq_fops = {
1160 .owner = THIS_MODULE,
1161 .open = raw6_seq_open,
1163 .llseek = seq_lseek,
1164 .release = seq_release_private,
1167 int __init raw6_proc_init(void)
1169 if (!proc_net_fops_create("raw6", S_IRUGO, &raw6_seq_fops))
1174 void raw6_proc_exit(void)
1176 proc_net_remove("raw6");
1178 #endif /* CONFIG_PROC_FS */