2 * INET An implementation of the TCP/IP protocol suite for the LINUX
3 * operating system. INET is implemented using the BSD Socket
4 * interface as the means of communication with the user level.
6 * RAW - implementation of IP "raw" sockets.
9 * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
12 * Alan Cox : verify_area() fixed up
13 * Alan Cox : ICMP error handling
14 * Alan Cox : EMSGSIZE if you send too big a packet
15 * Alan Cox : Now uses generic datagrams and shared
16 * skbuff library. No more peek crashes,
18 * Alan Cox : Checks sk->broadcast.
19 * Alan Cox : Uses skb_free_datagram/skb_copy_datagram
20 * Alan Cox : Raw passes ip options too
21 * Alan Cox : Setsocketopt added
22 * Alan Cox : Fixed error return for broadcasts
23 * Alan Cox : Removed wake_up calls
24 * Alan Cox : Use ttl/tos
25 * Alan Cox : Cleaned up old debugging
26 * Alan Cox : Use new kernel side addresses
27 * Arnt Gulbrandsen : Fixed MSG_DONTROUTE in raw sockets.
28 * Alan Cox : BSD style RAW socket demultiplexing.
29 * Alan Cox : Beginnings of mrouted support.
30 * Alan Cox : Added IP_HDRINCL option.
31 * Alan Cox : Skip broadcast check if BSDism set.
32 * David S. Miller : New socket lookup architecture.
34 * This program is free software; you can redistribute it and/or
35 * modify it under the terms of the GNU General Public License
36 * as published by the Free Software Foundation; either version
37 * 2 of the License, or (at your option) any later version.
40 #include <linux/types.h>
41 #include <asm/atomic.h>
42 #include <asm/byteorder.h>
43 #include <asm/current.h>
44 #include <asm/uaccess.h>
45 #include <asm/ioctls.h>
46 #include <linux/stddef.h>
47 #include <linux/slab.h>
48 #include <linux/errno.h>
49 #include <linux/aio.h>
50 #include <linux/kernel.h>
51 #include <linux/spinlock.h>
52 #include <linux/sockios.h>
53 #include <linux/socket.h>
55 #include <linux/mroute.h>
56 #include <linux/netdevice.h>
57 #include <linux/in_route.h>
58 #include <linux/route.h>
59 #include <linux/skbuff.h>
60 #include <net/net_namespace.h>
64 #include <linux/net.h>
70 #include <net/tcp_states.h>
71 #include <net/inet_common.h>
72 #include <net/checksum.h>
74 #include <linux/rtnetlink.h>
75 #include <linux/proc_fs.h>
76 #include <linux/seq_file.h>
77 #include <linux/netfilter.h>
78 #include <linux/netfilter_ipv4.h>
79 #include <linux/compat.h>
81 static struct raw_hashinfo raw_v4_hashinfo = {
82 .lock = __RW_LOCK_UNLOCKED(raw_v4_hashinfo.lock),
85 void raw_hash_sk(struct sock *sk)
87 struct raw_hashinfo *h = sk->sk_prot->h.raw_hash;
88 struct hlist_head *head;
90 head = &h->ht[inet_sk(sk)->inet_num & (RAW_HTABLE_SIZE - 1)];
92 write_lock_bh(&h->lock);
93 sk_add_node(sk, head);
94 sock_prot_inuse_add(sock_net(sk), sk->sk_prot, 1);
95 write_unlock_bh(&h->lock);
97 EXPORT_SYMBOL_GPL(raw_hash_sk);
99 void raw_unhash_sk(struct sock *sk)
101 struct raw_hashinfo *h = sk->sk_prot->h.raw_hash;
103 write_lock_bh(&h->lock);
104 if (sk_del_node_init(sk))
105 sock_prot_inuse_add(sock_net(sk), sk->sk_prot, -1);
106 write_unlock_bh(&h->lock);
108 EXPORT_SYMBOL_GPL(raw_unhash_sk);
110 static struct sock *__raw_v4_lookup(struct net *net, struct sock *sk,
111 unsigned short num, __be32 raddr, __be32 laddr, int dif)
113 struct hlist_node *node;
115 sk_for_each_from(sk, node) {
116 struct inet_sock *inet = inet_sk(sk);
118 if (net_eq(sock_net(sk), net) && inet->inet_num == num &&
119 !(inet->inet_daddr && inet->inet_daddr != raddr) &&
120 !(inet->inet_rcv_saddr && inet->inet_rcv_saddr != laddr) &&
121 !(sk->sk_bound_dev_if && sk->sk_bound_dev_if != dif))
122 goto found; /* gotcha */
133 static __inline__ int icmp_filter(struct sock *sk, struct sk_buff *skb)
137 if (!pskb_may_pull(skb, sizeof(struct icmphdr)))
140 type = icmp_hdr(skb)->type;
142 __u32 data = raw_sk(sk)->filter.data;
144 return ((1 << type) & data) != 0;
147 /* Do not block unknown ICMP types */
151 /* IP input processing comes here for RAW socket delivery.
152 * Caller owns SKB, so we must make clones.
154 * RFC 1122: SHOULD pass TOS value up to the transport layer.
155 * -> It does. And not only TOS, but all IP header.
157 static int raw_v4_input(struct sk_buff *skb, struct iphdr *iph, int hash)
160 struct hlist_head *head;
164 read_lock(&raw_v4_hashinfo.lock);
165 head = &raw_v4_hashinfo.ht[hash];
166 if (hlist_empty(head))
169 net = dev_net(skb->dev);
170 sk = __raw_v4_lookup(net, __sk_head(head), iph->protocol,
171 iph->saddr, iph->daddr,
176 if (iph->protocol != IPPROTO_ICMP || !icmp_filter(sk, skb)) {
177 struct sk_buff *clone = skb_clone(skb, GFP_ATOMIC);
179 /* Not releasing hash table! */
183 sk = __raw_v4_lookup(net, sk_next(sk), iph->protocol,
184 iph->saddr, iph->daddr,
188 read_unlock(&raw_v4_hashinfo.lock);
192 int raw_local_deliver(struct sk_buff *skb, int protocol)
197 hash = protocol & (RAW_HTABLE_SIZE - 1);
198 raw_sk = sk_head(&raw_v4_hashinfo.ht[hash]);
200 /* If there maybe a raw socket we must check - if not we
203 if (raw_sk && !raw_v4_input(skb, ip_hdr(skb), hash))
206 return raw_sk != NULL;
210 static void raw_err(struct sock *sk, struct sk_buff *skb, u32 info)
212 struct inet_sock *inet = inet_sk(sk);
213 const int type = icmp_hdr(skb)->type;
214 const int code = icmp_hdr(skb)->code;
218 /* Report error on raw socket, if:
219 1. User requested ip_recverr.
220 2. Socket is connected (otherwise the error indication
221 is useless without ip_recverr and error is hard.
223 if (!inet->recverr && sk->sk_state != TCP_ESTABLISHED)
228 case ICMP_TIME_EXCEEDED:
231 case ICMP_SOURCE_QUENCH:
233 case ICMP_PARAMETERPROB:
237 case ICMP_DEST_UNREACH:
239 if (code > NR_ICMP_UNREACH)
241 err = icmp_err_convert[code].errno;
242 harderr = icmp_err_convert[code].fatal;
243 if (code == ICMP_FRAG_NEEDED) {
244 harderr = inet->pmtudisc != IP_PMTUDISC_DONT;
250 struct iphdr *iph = (struct iphdr *)skb->data;
251 u8 *payload = skb->data + (iph->ihl << 2);
255 ip_icmp_error(sk, skb, err, 0, info, payload);
258 if (inet->recverr || harderr) {
260 sk->sk_error_report(sk);
264 void raw_icmp_error(struct sk_buff *skb, int protocol, u32 info)
271 hash = protocol & (RAW_HTABLE_SIZE - 1);
273 read_lock(&raw_v4_hashinfo.lock);
274 raw_sk = sk_head(&raw_v4_hashinfo.ht[hash]);
275 if (raw_sk != NULL) {
276 iph = (struct iphdr *)skb->data;
277 net = dev_net(skb->dev);
279 while ((raw_sk = __raw_v4_lookup(net, raw_sk, protocol,
280 iph->daddr, iph->saddr,
281 skb->dev->ifindex)) != NULL) {
282 raw_err(raw_sk, skb, info);
283 raw_sk = sk_next(raw_sk);
284 iph = (struct iphdr *)skb->data;
287 read_unlock(&raw_v4_hashinfo.lock);
290 static int raw_rcv_skb(struct sock * sk, struct sk_buff * skb)
292 /* Charge it to the socket. */
294 if (ip_queue_rcv_skb(sk, skb) < 0) {
299 return NET_RX_SUCCESS;
302 int raw_rcv(struct sock *sk, struct sk_buff *skb)
304 if (!xfrm4_policy_check(sk, XFRM_POLICY_IN, skb)) {
305 atomic_inc(&sk->sk_drops);
311 skb_push(skb, skb->data - skb_network_header(skb));
313 raw_rcv_skb(sk, skb);
317 static int raw_send_hdrinc(struct sock *sk, void *from, size_t length,
321 struct inet_sock *inet = inet_sk(sk);
322 struct net *net = sock_net(sk);
327 struct rtable *rt = *rtp;
329 if (length > rt->dst.dev->mtu) {
330 ip_local_error(sk, EMSGSIZE, rt->rt_dst, inet->inet_dport,
337 skb = sock_alloc_send_skb(sk,
338 length + LL_ALLOCATED_SPACE(rt->dst.dev) + 15,
339 flags & MSG_DONTWAIT, &err);
342 skb_reserve(skb, LL_RESERVED_SPACE(rt->dst.dev));
344 skb->priority = sk->sk_priority;
345 skb->mark = sk->sk_mark;
346 skb_dst_set(skb, &rt->dst);
349 skb_reset_network_header(skb);
351 skb_put(skb, length);
353 skb->ip_summed = CHECKSUM_NONE;
355 skb->transport_header = skb->network_header;
357 if (memcpy_fromiovecend((void *)iph, from, 0, length))
360 iphlen = iph->ihl * 4;
363 * We don't want to modify the ip header, but we do need to
364 * be sure that it won't cause problems later along the network
365 * stack. Specifically we want to make sure that iph->ihl is a
366 * sane value. If ihl points beyond the length of the buffer passed
367 * in, reject the frame as invalid
373 if (iphlen >= sizeof(*iph)) {
375 iph->saddr = rt->rt_src;
377 iph->tot_len = htons(length);
379 ip_select_ident(iph, &rt->dst, NULL);
381 iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
383 if (iph->protocol == IPPROTO_ICMP)
384 icmp_out_count(net, ((struct icmphdr *)
385 skb_transport_header(skb))->type);
387 err = NF_HOOK(NFPROTO_IPV4, NF_INET_LOCAL_OUT, skb, NULL,
388 rt->dst.dev, dst_output);
390 err = net_xmit_errno(err);
399 IP_INC_STATS(net, IPSTATS_MIB_OUTDISCARDS);
400 if (err == -ENOBUFS && !inet->recverr)
405 static int raw_probe_proto_opt(struct flowi4 *fl4, struct msghdr *msg)
408 u8 __user *type = NULL;
409 u8 __user *code = NULL;
416 for (i = 0; i < msg->msg_iovlen; i++) {
417 iov = &msg->msg_iov[i];
421 switch (fl4->flowi4_proto) {
423 /* check if one-byte field is readable or not. */
424 if (iov->iov_base && iov->iov_len < 1)
428 type = iov->iov_base;
429 /* check if code field is readable or not. */
430 if (iov->iov_len > 1)
433 code = iov->iov_base;
436 if (get_user(fl4->uli.icmpt.type, type) ||
437 get_user(fl4->uli.icmpt.code, code))
452 static int raw_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
455 struct inet_sock *inet = inet_sk(sk);
456 struct ipcm_cookie ipc;
457 struct rtable *rt = NULL;
473 if (msg->msg_flags & MSG_OOB) /* Mirror BSD error message */
474 goto out; /* compatibility */
477 * Get and verify the address.
480 if (msg->msg_namelen) {
481 struct sockaddr_in *usin = (struct sockaddr_in *)msg->msg_name;
483 if (msg->msg_namelen < sizeof(*usin))
485 if (usin->sin_family != AF_INET) {
486 static int complained;
488 printk(KERN_INFO "%s forgot to set AF_INET in "
489 "raw sendmsg. Fix it!\n",
492 if (usin->sin_family)
495 daddr = usin->sin_addr.s_addr;
496 /* ANK: I did not forget to get protocol from port field.
497 * I just do not know, who uses this weirdness.
498 * IP_HDRINCL is much more convenient.
502 if (sk->sk_state != TCP_ESTABLISHED)
504 daddr = inet->inet_daddr;
507 ipc.addr = inet->inet_saddr;
510 ipc.oif = sk->sk_bound_dev_if;
512 if (msg->msg_controllen) {
513 err = ip_cmsg_send(sock_net(sk), msg, &ipc);
528 /* Linux does not mangle headers on raw sockets,
529 * so that IP options + IP_HDRINCL is non-sense.
536 daddr = ipc.opt->faddr;
539 tos = RT_CONN_FLAGS(sk);
540 if (msg->msg_flags & MSG_DONTROUTE)
543 if (ipv4_is_multicast(daddr)) {
545 ipc.oif = inet->mc_index;
547 saddr = inet->mc_addr;
551 struct flowi4 fl4 = {
552 .flowi4_oif = ipc.oif,
553 .flowi4_mark = sk->sk_mark,
557 .flowi4_proto = (inet->hdrincl ?
560 .flowi4_flags = FLOWI_FLAG_CAN_SLEEP,
562 if (!inet->hdrincl) {
563 err = raw_probe_proto_opt(&fl4, msg);
568 security_sk_classify_flow(sk, flowi4_to_flowi(&fl4));
569 rt = ip_route_output_flow(sock_net(sk), &fl4, sk);
577 if (rt->rt_flags & RTCF_BROADCAST && !sock_flag(sk, SOCK_BROADCAST))
580 if (msg->msg_flags & MSG_CONFIRM)
585 err = raw_send_hdrinc(sk, msg->msg_iov, len,
586 &rt, msg->msg_flags);
590 ipc.addr = rt->rt_dst;
592 err = ip_append_data(sk, ip_generic_getfrag, msg->msg_iov, len, 0,
593 &ipc, &rt, msg->msg_flags);
595 ip_flush_pending_frames(sk);
596 else if (!(msg->msg_flags & MSG_MORE)) {
597 err = ip_push_pending_frames(sk);
598 if (err == -ENOBUFS && !inet->recverr)
614 dst_confirm(&rt->dst);
615 if (!(msg->msg_flags & MSG_PROBE) || len)
616 goto back_from_confirm;
621 static void raw_close(struct sock *sk, long timeout)
624 * Raw sockets may have direct kernel refereneces. Kill them.
626 ip_ra_control(sk, 0, NULL);
628 sk_common_release(sk);
631 static void raw_destroy(struct sock *sk)
634 ip_flush_pending_frames(sk);
638 /* This gets rid of all the nasties in af_inet. -DaveM */
639 static int raw_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
641 struct inet_sock *inet = inet_sk(sk);
642 struct sockaddr_in *addr = (struct sockaddr_in *) uaddr;
646 if (sk->sk_state != TCP_CLOSE || addr_len < sizeof(struct sockaddr_in))
648 chk_addr_ret = inet_addr_type(sock_net(sk), addr->sin_addr.s_addr);
649 ret = -EADDRNOTAVAIL;
650 if (addr->sin_addr.s_addr && chk_addr_ret != RTN_LOCAL &&
651 chk_addr_ret != RTN_MULTICAST && chk_addr_ret != RTN_BROADCAST)
653 inet->inet_rcv_saddr = inet->inet_saddr = addr->sin_addr.s_addr;
654 if (chk_addr_ret == RTN_MULTICAST || chk_addr_ret == RTN_BROADCAST)
655 inet->inet_saddr = 0; /* Use device */
662 * This should be easy, if there is something there
663 * we return it, otherwise we block.
666 static int raw_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
667 size_t len, int noblock, int flags, int *addr_len)
669 struct inet_sock *inet = inet_sk(sk);
671 int err = -EOPNOTSUPP;
672 struct sockaddr_in *sin = (struct sockaddr_in *)msg->msg_name;
679 *addr_len = sizeof(*sin);
681 if (flags & MSG_ERRQUEUE) {
682 err = ip_recv_error(sk, msg, len);
686 skb = skb_recv_datagram(sk, flags, noblock, &err);
692 msg->msg_flags |= MSG_TRUNC;
696 err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
700 sock_recv_ts_and_drops(msg, sk, skb);
702 /* Copy the address. */
704 sin->sin_family = AF_INET;
705 sin->sin_addr.s_addr = ip_hdr(skb)->saddr;
707 memset(&sin->sin_zero, 0, sizeof(sin->sin_zero));
709 if (inet->cmsg_flags)
710 ip_cmsg_recv(msg, skb);
711 if (flags & MSG_TRUNC)
714 skb_free_datagram(sk, skb);
721 static int raw_init(struct sock *sk)
723 struct raw_sock *rp = raw_sk(sk);
725 if (inet_sk(sk)->inet_num == IPPROTO_ICMP)
726 memset(&rp->filter, 0, sizeof(rp->filter));
730 static int raw_seticmpfilter(struct sock *sk, char __user *optval, int optlen)
732 if (optlen > sizeof(struct icmp_filter))
733 optlen = sizeof(struct icmp_filter);
734 if (copy_from_user(&raw_sk(sk)->filter, optval, optlen))
739 static int raw_geticmpfilter(struct sock *sk, char __user *optval, int __user *optlen)
741 int len, ret = -EFAULT;
743 if (get_user(len, optlen))
748 if (len > sizeof(struct icmp_filter))
749 len = sizeof(struct icmp_filter);
751 if (put_user(len, optlen) ||
752 copy_to_user(optval, &raw_sk(sk)->filter, len))
758 static int do_raw_setsockopt(struct sock *sk, int level, int optname,
759 char __user *optval, unsigned int optlen)
761 if (optname == ICMP_FILTER) {
762 if (inet_sk(sk)->inet_num != IPPROTO_ICMP)
765 return raw_seticmpfilter(sk, optval, optlen);
770 static int raw_setsockopt(struct sock *sk, int level, int optname,
771 char __user *optval, unsigned int optlen)
773 if (level != SOL_RAW)
774 return ip_setsockopt(sk, level, optname, optval, optlen);
775 return do_raw_setsockopt(sk, level, optname, optval, optlen);
779 static int compat_raw_setsockopt(struct sock *sk, int level, int optname,
780 char __user *optval, unsigned int optlen)
782 if (level != SOL_RAW)
783 return compat_ip_setsockopt(sk, level, optname, optval, optlen);
784 return do_raw_setsockopt(sk, level, optname, optval, optlen);
788 static int do_raw_getsockopt(struct sock *sk, int level, int optname,
789 char __user *optval, int __user *optlen)
791 if (optname == ICMP_FILTER) {
792 if (inet_sk(sk)->inet_num != IPPROTO_ICMP)
795 return raw_geticmpfilter(sk, optval, optlen);
800 static int raw_getsockopt(struct sock *sk, int level, int optname,
801 char __user *optval, int __user *optlen)
803 if (level != SOL_RAW)
804 return ip_getsockopt(sk, level, optname, optval, optlen);
805 return do_raw_getsockopt(sk, level, optname, optval, optlen);
809 static int compat_raw_getsockopt(struct sock *sk, int level, int optname,
810 char __user *optval, int __user *optlen)
812 if (level != SOL_RAW)
813 return compat_ip_getsockopt(sk, level, optname, optval, optlen);
814 return do_raw_getsockopt(sk, level, optname, optval, optlen);
818 static int raw_ioctl(struct sock *sk, int cmd, unsigned long arg)
822 int amount = sk_wmem_alloc_get(sk);
824 return put_user(amount, (int __user *)arg);
830 spin_lock_bh(&sk->sk_receive_queue.lock);
831 skb = skb_peek(&sk->sk_receive_queue);
834 spin_unlock_bh(&sk->sk_receive_queue.lock);
835 return put_user(amount, (int __user *)arg);
839 #ifdef CONFIG_IP_MROUTE
840 return ipmr_ioctl(sk, cmd, (void __user *)arg);
848 static int compat_raw_ioctl(struct sock *sk, unsigned int cmd, unsigned long arg)
855 #ifdef CONFIG_IP_MROUTE
856 return ipmr_compat_ioctl(sk, cmd, compat_ptr(arg));
864 struct proto raw_prot = {
866 .owner = THIS_MODULE,
868 .destroy = raw_destroy,
869 .connect = ip4_datagram_connect,
870 .disconnect = udp_disconnect,
873 .setsockopt = raw_setsockopt,
874 .getsockopt = raw_getsockopt,
875 .sendmsg = raw_sendmsg,
876 .recvmsg = raw_recvmsg,
878 .backlog_rcv = raw_rcv_skb,
880 .unhash = raw_unhash_sk,
881 .obj_size = sizeof(struct raw_sock),
882 .h.raw_hash = &raw_v4_hashinfo,
884 .compat_setsockopt = compat_raw_setsockopt,
885 .compat_getsockopt = compat_raw_getsockopt,
886 .compat_ioctl = compat_raw_ioctl,
890 #ifdef CONFIG_PROC_FS
891 static struct sock *raw_get_first(struct seq_file *seq)
894 struct raw_iter_state *state = raw_seq_private(seq);
896 for (state->bucket = 0; state->bucket < RAW_HTABLE_SIZE;
898 struct hlist_node *node;
900 sk_for_each(sk, node, &state->h->ht[state->bucket])
901 if (sock_net(sk) == seq_file_net(seq))
909 static struct sock *raw_get_next(struct seq_file *seq, struct sock *sk)
911 struct raw_iter_state *state = raw_seq_private(seq);
917 } while (sk && sock_net(sk) != seq_file_net(seq));
919 if (!sk && ++state->bucket < RAW_HTABLE_SIZE) {
920 sk = sk_head(&state->h->ht[state->bucket]);
926 static struct sock *raw_get_idx(struct seq_file *seq, loff_t pos)
928 struct sock *sk = raw_get_first(seq);
931 while (pos && (sk = raw_get_next(seq, sk)) != NULL)
933 return pos ? NULL : sk;
936 void *raw_seq_start(struct seq_file *seq, loff_t *pos)
938 struct raw_iter_state *state = raw_seq_private(seq);
940 read_lock(&state->h->lock);
941 return *pos ? raw_get_idx(seq, *pos - 1) : SEQ_START_TOKEN;
943 EXPORT_SYMBOL_GPL(raw_seq_start);
945 void *raw_seq_next(struct seq_file *seq, void *v, loff_t *pos)
949 if (v == SEQ_START_TOKEN)
950 sk = raw_get_first(seq);
952 sk = raw_get_next(seq, v);
956 EXPORT_SYMBOL_GPL(raw_seq_next);
958 void raw_seq_stop(struct seq_file *seq, void *v)
960 struct raw_iter_state *state = raw_seq_private(seq);
962 read_unlock(&state->h->lock);
964 EXPORT_SYMBOL_GPL(raw_seq_stop);
966 static void raw_sock_seq_show(struct seq_file *seq, struct sock *sp, int i)
968 struct inet_sock *inet = inet_sk(sp);
969 __be32 dest = inet->inet_daddr,
970 src = inet->inet_rcv_saddr;
972 srcp = inet->inet_num;
974 seq_printf(seq, "%4d: %08X:%04X %08X:%04X"
975 " %02X %08X:%08X %02X:%08lX %08X %5d %8d %lu %d %p %d\n",
976 i, src, srcp, dest, destp, sp->sk_state,
977 sk_wmem_alloc_get(sp),
978 sk_rmem_alloc_get(sp),
979 0, 0L, 0, sock_i_uid(sp), 0, sock_i_ino(sp),
980 atomic_read(&sp->sk_refcnt), sp, atomic_read(&sp->sk_drops));
983 static int raw_seq_show(struct seq_file *seq, void *v)
985 if (v == SEQ_START_TOKEN)
986 seq_printf(seq, " sl local_address rem_address st tx_queue "
987 "rx_queue tr tm->when retrnsmt uid timeout "
988 "inode ref pointer drops\n");
990 raw_sock_seq_show(seq, v, raw_seq_private(seq)->bucket);
994 static const struct seq_operations raw_seq_ops = {
995 .start = raw_seq_start,
996 .next = raw_seq_next,
997 .stop = raw_seq_stop,
998 .show = raw_seq_show,
1001 int raw_seq_open(struct inode *ino, struct file *file,
1002 struct raw_hashinfo *h, const struct seq_operations *ops)
1005 struct raw_iter_state *i;
1007 err = seq_open_net(ino, file, ops, sizeof(struct raw_iter_state));
1011 i = raw_seq_private((struct seq_file *)file->private_data);
1015 EXPORT_SYMBOL_GPL(raw_seq_open);
1017 static int raw_v4_seq_open(struct inode *inode, struct file *file)
1019 return raw_seq_open(inode, file, &raw_v4_hashinfo, &raw_seq_ops);
1022 static const struct file_operations raw_seq_fops = {
1023 .owner = THIS_MODULE,
1024 .open = raw_v4_seq_open,
1026 .llseek = seq_lseek,
1027 .release = seq_release_net,
1030 static __net_init int raw_init_net(struct net *net)
1032 if (!proc_net_fops_create(net, "raw", S_IRUGO, &raw_seq_fops))
1038 static __net_exit void raw_exit_net(struct net *net)
1040 proc_net_remove(net, "raw");
1043 static __net_initdata struct pernet_operations raw_net_ops = {
1044 .init = raw_init_net,
1045 .exit = raw_exit_net,
1048 int __init raw_proc_init(void)
1050 return register_pernet_subsys(&raw_net_ops);
1053 void __init raw_proc_exit(void)
1055 unregister_pernet_subsys(&raw_net_ops);
1057 #endif /* CONFIG_PROC_FS */