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.
8 * Version: $Id: raw.c,v 1.64 2002/02/01 22:01:04 davem Exp $
11 * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
14 * Alan Cox : verify_area() fixed up
15 * Alan Cox : ICMP error handling
16 * Alan Cox : EMSGSIZE if you send too big a packet
17 * Alan Cox : Now uses generic datagrams and shared
18 * skbuff library. No more peek crashes,
20 * Alan Cox : Checks sk->broadcast.
21 * Alan Cox : Uses skb_free_datagram/skb_copy_datagram
22 * Alan Cox : Raw passes ip options too
23 * Alan Cox : Setsocketopt added
24 * Alan Cox : Fixed error return for broadcasts
25 * Alan Cox : Removed wake_up calls
26 * Alan Cox : Use ttl/tos
27 * Alan Cox : Cleaned up old debugging
28 * Alan Cox : Use new kernel side addresses
29 * Arnt Gulbrandsen : Fixed MSG_DONTROUTE in raw sockets.
30 * Alan Cox : BSD style RAW socket demultiplexing.
31 * Alan Cox : Beginnings of mrouted support.
32 * Alan Cox : Added IP_HDRINCL option.
33 * Alan Cox : Skip broadcast check if BSDism set.
34 * David S. Miller : New socket lookup architecture.
36 * This program is free software; you can redistribute it and/or
37 * modify it under the terms of the GNU General Public License
38 * as published by the Free Software Foundation; either version
39 * 2 of the License, or (at your option) any later version.
42 #include <linux/types.h>
43 #include <asm/atomic.h>
44 #include <asm/byteorder.h>
45 #include <asm/current.h>
46 #include <asm/uaccess.h>
47 #include <asm/ioctls.h>
48 #include <linux/stddef.h>
49 #include <linux/slab.h>
50 #include <linux/errno.h>
51 #include <linux/aio.h>
52 #include <linux/kernel.h>
53 #include <linux/spinlock.h>
54 #include <linux/sockios.h>
55 #include <linux/socket.h>
57 #include <linux/mroute.h>
58 #include <linux/netdevice.h>
59 #include <linux/in_route.h>
60 #include <linux/route.h>
61 #include <linux/skbuff.h>
62 #include <net/net_namespace.h>
65 #include <linux/gfp.h>
67 #include <linux/net.h>
73 #include <net/tcp_states.h>
74 #include <net/inet_common.h>
75 #include <net/checksum.h>
77 #include <linux/rtnetlink.h>
78 #include <linux/proc_fs.h>
79 #include <linux/seq_file.h>
80 #include <linux/netfilter.h>
81 #include <linux/netfilter_ipv4.h>
83 static struct raw_hashinfo raw_v4_hashinfo = {
84 .lock = __RW_LOCK_UNLOCKED(raw_v4_hashinfo.lock),
87 void raw_hash_sk(struct sock *sk)
89 struct raw_hashinfo *h = sk->sk_prot->h.raw_hash;
90 struct hlist_head *head;
92 head = &h->ht[inet_sk(sk)->num & (RAW_HTABLE_SIZE - 1)];
94 write_lock_bh(&h->lock);
95 sk_add_node(sk, head);
96 sock_prot_inuse_add(sock_net(sk), sk->sk_prot, 1);
97 write_unlock_bh(&h->lock);
99 EXPORT_SYMBOL_GPL(raw_hash_sk);
101 void raw_unhash_sk(struct sock *sk)
103 struct raw_hashinfo *h = sk->sk_prot->h.raw_hash;
105 write_lock_bh(&h->lock);
106 if (sk_del_node_init(sk))
107 sock_prot_inuse_add(sock_net(sk), sk->sk_prot, -1);
108 write_unlock_bh(&h->lock);
110 EXPORT_SYMBOL_GPL(raw_unhash_sk);
112 static struct sock *__raw_v4_lookup(struct net *net, struct sock *sk,
113 unsigned short num, __be32 raddr, __be32 laddr, int dif)
115 struct hlist_node *node;
117 sk_for_each_from(sk, node) {
118 struct inet_sock *inet = inet_sk(sk);
120 if (net_eq(sock_net(sk), net) && inet->num == num &&
121 !(inet->daddr && inet->daddr != raddr) &&
122 !(inet->rcv_saddr && inet->rcv_saddr != laddr) &&
123 !(sk->sk_bound_dev_if && sk->sk_bound_dev_if != dif))
124 goto found; /* gotcha */
135 static __inline__ int icmp_filter(struct sock *sk, struct sk_buff *skb)
139 if (!pskb_may_pull(skb, sizeof(struct icmphdr)))
142 type = icmp_hdr(skb)->type;
144 __u32 data = raw_sk(sk)->filter.data;
146 return ((1 << type) & data) != 0;
149 /* Do not block unknown ICMP types */
153 /* IP input processing comes here for RAW socket delivery.
154 * Caller owns SKB, so we must make clones.
156 * RFC 1122: SHOULD pass TOS value up to the transport layer.
157 * -> It does. And not only TOS, but all IP header.
159 static int raw_v4_input(struct sk_buff *skb, struct iphdr *iph, int hash)
162 struct hlist_head *head;
166 read_lock(&raw_v4_hashinfo.lock);
167 head = &raw_v4_hashinfo.ht[hash];
168 if (hlist_empty(head))
171 net = dev_net(skb->dev);
172 sk = __raw_v4_lookup(net, __sk_head(head), iph->protocol,
173 iph->saddr, iph->daddr,
178 if (iph->protocol != IPPROTO_ICMP || !icmp_filter(sk, skb)) {
179 struct sk_buff *clone = skb_clone(skb, GFP_ATOMIC);
181 /* Not releasing hash table! */
185 sk = __raw_v4_lookup(net, sk_next(sk), iph->protocol,
186 iph->saddr, iph->daddr,
190 read_unlock(&raw_v4_hashinfo.lock);
194 int raw_local_deliver(struct sk_buff *skb, int protocol)
199 hash = protocol & (RAW_HTABLE_SIZE - 1);
200 raw_sk = sk_head(&raw_v4_hashinfo.ht[hash]);
202 /* If there maybe a raw socket we must check - if not we
205 if (raw_sk && !raw_v4_input(skb, ip_hdr(skb), hash))
208 return raw_sk != NULL;
212 static void raw_err(struct sock *sk, struct sk_buff *skb, u32 info)
214 struct inet_sock *inet = inet_sk(sk);
215 const int type = icmp_hdr(skb)->type;
216 const int code = icmp_hdr(skb)->code;
220 /* Report error on raw socket, if:
221 1. User requested ip_recverr.
222 2. Socket is connected (otherwise the error indication
223 is useless without ip_recverr and error is hard.
225 if (!inet->recverr && sk->sk_state != TCP_ESTABLISHED)
230 case ICMP_TIME_EXCEEDED:
233 case ICMP_SOURCE_QUENCH:
235 case ICMP_PARAMETERPROB:
239 case ICMP_DEST_UNREACH:
241 if (code > NR_ICMP_UNREACH)
243 err = icmp_err_convert[code].errno;
244 harderr = icmp_err_convert[code].fatal;
245 if (code == ICMP_FRAG_NEEDED) {
246 harderr = inet->pmtudisc != IP_PMTUDISC_DONT;
252 struct iphdr *iph = (struct iphdr*)skb->data;
253 u8 *payload = skb->data + (iph->ihl << 2);
257 ip_icmp_error(sk, skb, err, 0, info, payload);
260 if (inet->recverr || harderr) {
262 sk->sk_error_report(sk);
266 void raw_icmp_error(struct sk_buff *skb, int protocol, u32 info)
273 hash = protocol & (RAW_HTABLE_SIZE - 1);
275 read_lock(&raw_v4_hashinfo.lock);
276 raw_sk = sk_head(&raw_v4_hashinfo.ht[hash]);
277 if (raw_sk != NULL) {
278 iph = (struct iphdr *)skb->data;
279 net = dev_net(skb->dev);
281 while ((raw_sk = __raw_v4_lookup(net, raw_sk, protocol,
282 iph->daddr, iph->saddr,
283 skb->dev->ifindex)) != NULL) {
284 raw_err(raw_sk, skb, info);
285 raw_sk = sk_next(raw_sk);
286 iph = (struct iphdr *)skb->data;
289 read_unlock(&raw_v4_hashinfo.lock);
292 static int raw_rcv_skb(struct sock * sk, struct sk_buff * skb)
294 /* Charge it to the socket. */
296 if (sock_queue_rcv_skb(sk, skb) < 0) {
297 atomic_inc(&sk->sk_drops);
302 return NET_RX_SUCCESS;
305 int raw_rcv(struct sock *sk, struct sk_buff *skb)
307 if (!xfrm4_policy_check(sk, XFRM_POLICY_IN, skb)) {
308 atomic_inc(&sk->sk_drops);
314 skb_push(skb, skb->data - skb_network_header(skb));
316 raw_rcv_skb(sk, skb);
320 static int raw_send_hdrinc(struct sock *sk, void *from, size_t length,
324 struct inet_sock *inet = inet_sk(sk);
330 if (length > rt->u.dst.dev->mtu) {
331 ip_local_error(sk, EMSGSIZE, rt->rt_dst, inet->dport,
338 skb = sock_alloc_send_skb(sk,
339 length + LL_ALLOCATED_SPACE(rt->u.dst.dev) + 15,
340 flags & MSG_DONTWAIT, &err);
343 skb_reserve(skb, LL_RESERVED_SPACE(rt->u.dst.dev));
345 skb->priority = sk->sk_priority;
346 skb->mark = sk->sk_mark;
347 skb->dst = dst_clone(&rt->u.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;
356 err = memcpy_fromiovecend((void *)iph, from, 0, length);
360 /* We don't modify invalid header */
361 iphlen = iph->ihl * 4;
362 if (iphlen >= sizeof(*iph) && iphlen <= length) {
364 iph->saddr = rt->rt_src;
366 iph->tot_len = htons(length);
368 ip_select_ident(iph, &rt->u.dst, NULL);
370 iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
372 if (iph->protocol == IPPROTO_ICMP)
373 icmp_out_count(((struct icmphdr *)
374 skb_transport_header(skb))->type);
376 err = NF_HOOK(PF_INET, NF_INET_LOCAL_OUT, skb, NULL, rt->u.dst.dev,
379 err = inet->recverr ? net_xmit_errno(err) : 0;
389 IP_INC_STATS(IPSTATS_MIB_OUTDISCARDS);
393 static int raw_probe_proto_opt(struct flowi *fl, struct msghdr *msg)
396 u8 __user *type = NULL;
397 u8 __user *code = NULL;
404 for (i = 0; i < msg->msg_iovlen; i++) {
405 iov = &msg->msg_iov[i];
411 /* check if one-byte field is readable or not. */
412 if (iov->iov_base && iov->iov_len < 1)
416 type = iov->iov_base;
417 /* check if code field is readable or not. */
418 if (iov->iov_len > 1)
421 code = iov->iov_base;
424 if (get_user(fl->fl_icmp_type, type) ||
425 get_user(fl->fl_icmp_code, code))
440 static int raw_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
443 struct inet_sock *inet = inet_sk(sk);
444 struct ipcm_cookie ipc;
445 struct rtable *rt = NULL;
461 if (msg->msg_flags & MSG_OOB) /* Mirror BSD error message */
462 goto out; /* compatibility */
465 * Get and verify the address.
468 if (msg->msg_namelen) {
469 struct sockaddr_in *usin = (struct sockaddr_in*)msg->msg_name;
471 if (msg->msg_namelen < sizeof(*usin))
473 if (usin->sin_family != AF_INET) {
474 static int complained;
476 printk(KERN_INFO "%s forgot to set AF_INET in "
477 "raw sendmsg. Fix it!\n",
480 if (usin->sin_family)
483 daddr = usin->sin_addr.s_addr;
484 /* ANK: I did not forget to get protocol from port field.
485 * I just do not know, who uses this weirdness.
486 * IP_HDRINCL is much more convenient.
490 if (sk->sk_state != TCP_ESTABLISHED)
495 ipc.addr = inet->saddr;
497 ipc.oif = sk->sk_bound_dev_if;
499 if (msg->msg_controllen) {
500 err = ip_cmsg_send(sock_net(sk), msg, &ipc);
515 /* Linux does not mangle headers on raw sockets,
516 * so that IP options + IP_HDRINCL is non-sense.
523 daddr = ipc.opt->faddr;
526 tos = RT_CONN_FLAGS(sk);
527 if (msg->msg_flags & MSG_DONTROUTE)
530 if (ipv4_is_multicast(daddr)) {
532 ipc.oif = inet->mc_index;
534 saddr = inet->mc_addr;
538 struct flowi fl = { .oif = ipc.oif,
544 .proto = inet->hdrincl ? IPPROTO_RAW :
547 if (!inet->hdrincl) {
548 err = raw_probe_proto_opt(&fl, msg);
553 security_sk_classify_flow(sk, &fl);
554 err = ip_route_output_flow(sock_net(sk), &rt, &fl, sk, 1);
560 if (rt->rt_flags & RTCF_BROADCAST && !sock_flag(sk, SOCK_BROADCAST))
563 if (msg->msg_flags & MSG_CONFIRM)
568 err = raw_send_hdrinc(sk, msg->msg_iov, len,
573 ipc.addr = rt->rt_dst;
575 err = ip_append_data(sk, ip_generic_getfrag, msg->msg_iov, len, 0,
576 &ipc, rt, msg->msg_flags);
578 ip_flush_pending_frames(sk);
579 else if (!(msg->msg_flags & MSG_MORE))
580 err = ip_push_pending_frames(sk);
594 dst_confirm(&rt->u.dst);
595 if (!(msg->msg_flags & MSG_PROBE) || len)
596 goto back_from_confirm;
601 static void raw_close(struct sock *sk, long timeout)
604 * Raw sockets may have direct kernel refereneces. Kill them.
606 ip_ra_control(sk, 0, NULL);
608 sk_common_release(sk);
611 /* This gets rid of all the nasties in af_inet. -DaveM */
612 static int raw_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
614 struct inet_sock *inet = inet_sk(sk);
615 struct sockaddr_in *addr = (struct sockaddr_in *) uaddr;
619 if (sk->sk_state != TCP_CLOSE || addr_len < sizeof(struct sockaddr_in))
621 chk_addr_ret = inet_addr_type(sock_net(sk), addr->sin_addr.s_addr);
622 ret = -EADDRNOTAVAIL;
623 if (addr->sin_addr.s_addr && chk_addr_ret != RTN_LOCAL &&
624 chk_addr_ret != RTN_MULTICAST && chk_addr_ret != RTN_BROADCAST)
626 inet->rcv_saddr = inet->saddr = addr->sin_addr.s_addr;
627 if (chk_addr_ret == RTN_MULTICAST || chk_addr_ret == RTN_BROADCAST)
628 inet->saddr = 0; /* Use device */
635 * This should be easy, if there is something there
636 * we return it, otherwise we block.
639 static int raw_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
640 size_t len, int noblock, int flags, int *addr_len)
642 struct inet_sock *inet = inet_sk(sk);
644 int err = -EOPNOTSUPP;
645 struct sockaddr_in *sin = (struct sockaddr_in *)msg->msg_name;
652 *addr_len = sizeof(*sin);
654 if (flags & MSG_ERRQUEUE) {
655 err = ip_recv_error(sk, msg, len);
659 skb = skb_recv_datagram(sk, flags, noblock, &err);
665 msg->msg_flags |= MSG_TRUNC;
669 err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
673 sock_recv_timestamp(msg, sk, skb);
675 /* Copy the address. */
677 sin->sin_family = AF_INET;
678 sin->sin_addr.s_addr = ip_hdr(skb)->saddr;
680 memset(&sin->sin_zero, 0, sizeof(sin->sin_zero));
682 if (inet->cmsg_flags)
683 ip_cmsg_recv(msg, skb);
684 if (flags & MSG_TRUNC)
687 skb_free_datagram(sk, skb);
694 static int raw_init(struct sock *sk)
696 struct raw_sock *rp = raw_sk(sk);
698 if (inet_sk(sk)->num == IPPROTO_ICMP)
699 memset(&rp->filter, 0, sizeof(rp->filter));
703 static int raw_seticmpfilter(struct sock *sk, char __user *optval, int optlen)
705 if (optlen > sizeof(struct icmp_filter))
706 optlen = sizeof(struct icmp_filter);
707 if (copy_from_user(&raw_sk(sk)->filter, optval, optlen))
712 static int raw_geticmpfilter(struct sock *sk, char __user *optval, int __user *optlen)
714 int len, ret = -EFAULT;
716 if (get_user(len, optlen))
721 if (len > sizeof(struct icmp_filter))
722 len = sizeof(struct icmp_filter);
724 if (put_user(len, optlen) ||
725 copy_to_user(optval, &raw_sk(sk)->filter, len))
731 static int do_raw_setsockopt(struct sock *sk, int level, int optname,
732 char __user *optval, int optlen)
734 if (optname == ICMP_FILTER) {
735 if (inet_sk(sk)->num != IPPROTO_ICMP)
738 return raw_seticmpfilter(sk, optval, optlen);
743 static int raw_setsockopt(struct sock *sk, int level, int optname,
744 char __user *optval, int optlen)
746 if (level != SOL_RAW)
747 return ip_setsockopt(sk, level, optname, optval, optlen);
748 return do_raw_setsockopt(sk, level, optname, optval, optlen);
752 static int compat_raw_setsockopt(struct sock *sk, int level, int optname,
753 char __user *optval, int optlen)
755 if (level != SOL_RAW)
756 return compat_ip_setsockopt(sk, level, optname, optval, optlen);
757 return do_raw_setsockopt(sk, level, optname, optval, optlen);
761 static int do_raw_getsockopt(struct sock *sk, int level, int optname,
762 char __user *optval, int __user *optlen)
764 if (optname == ICMP_FILTER) {
765 if (inet_sk(sk)->num != IPPROTO_ICMP)
768 return raw_geticmpfilter(sk, optval, optlen);
773 static int raw_getsockopt(struct sock *sk, int level, int optname,
774 char __user *optval, int __user *optlen)
776 if (level != SOL_RAW)
777 return ip_getsockopt(sk, level, optname, optval, optlen);
778 return do_raw_getsockopt(sk, level, optname, optval, optlen);
782 static int compat_raw_getsockopt(struct sock *sk, int level, int optname,
783 char __user *optval, int __user *optlen)
785 if (level != SOL_RAW)
786 return compat_ip_getsockopt(sk, level, optname, optval, optlen);
787 return do_raw_getsockopt(sk, level, optname, optval, optlen);
791 static int raw_ioctl(struct sock *sk, int cmd, unsigned long arg)
795 int amount = atomic_read(&sk->sk_wmem_alloc);
796 return put_user(amount, (int __user *)arg);
802 spin_lock_bh(&sk->sk_receive_queue.lock);
803 skb = skb_peek(&sk->sk_receive_queue);
806 spin_unlock_bh(&sk->sk_receive_queue.lock);
807 return put_user(amount, (int __user *)arg);
811 #ifdef CONFIG_IP_MROUTE
812 return ipmr_ioctl(sk, cmd, (void __user *)arg);
819 struct proto raw_prot = {
821 .owner = THIS_MODULE,
823 .connect = ip4_datagram_connect,
824 .disconnect = udp_disconnect,
827 .setsockopt = raw_setsockopt,
828 .getsockopt = raw_getsockopt,
829 .sendmsg = raw_sendmsg,
830 .recvmsg = raw_recvmsg,
832 .backlog_rcv = raw_rcv_skb,
834 .unhash = raw_unhash_sk,
835 .obj_size = sizeof(struct raw_sock),
836 .h.raw_hash = &raw_v4_hashinfo,
838 .compat_setsockopt = compat_raw_setsockopt,
839 .compat_getsockopt = compat_raw_getsockopt,
843 #ifdef CONFIG_PROC_FS
844 static struct sock *raw_get_first(struct seq_file *seq)
847 struct raw_iter_state* state = raw_seq_private(seq);
849 for (state->bucket = 0; state->bucket < RAW_HTABLE_SIZE;
851 struct hlist_node *node;
853 sk_for_each(sk, node, &state->h->ht[state->bucket])
854 if (sock_net(sk) == seq_file_net(seq))
862 static struct sock *raw_get_next(struct seq_file *seq, struct sock *sk)
864 struct raw_iter_state* state = raw_seq_private(seq);
870 } while (sk && sock_net(sk) != seq_file_net(seq));
872 if (!sk && ++state->bucket < RAW_HTABLE_SIZE) {
873 sk = sk_head(&state->h->ht[state->bucket]);
879 static struct sock *raw_get_idx(struct seq_file *seq, loff_t pos)
881 struct sock *sk = raw_get_first(seq);
884 while (pos && (sk = raw_get_next(seq, sk)) != NULL)
886 return pos ? NULL : sk;
889 void *raw_seq_start(struct seq_file *seq, loff_t *pos)
891 struct raw_iter_state *state = raw_seq_private(seq);
893 read_lock(&state->h->lock);
894 return *pos ? raw_get_idx(seq, *pos - 1) : SEQ_START_TOKEN;
896 EXPORT_SYMBOL_GPL(raw_seq_start);
898 void *raw_seq_next(struct seq_file *seq, void *v, loff_t *pos)
902 if (v == SEQ_START_TOKEN)
903 sk = raw_get_first(seq);
905 sk = raw_get_next(seq, v);
909 EXPORT_SYMBOL_GPL(raw_seq_next);
911 void raw_seq_stop(struct seq_file *seq, void *v)
913 struct raw_iter_state *state = raw_seq_private(seq);
915 read_unlock(&state->h->lock);
917 EXPORT_SYMBOL_GPL(raw_seq_stop);
919 static void raw_sock_seq_show(struct seq_file *seq, struct sock *sp, int i)
921 struct inet_sock *inet = inet_sk(sp);
922 __be32 dest = inet->daddr,
923 src = inet->rcv_saddr;
927 seq_printf(seq, "%4d: %08X:%04X %08X:%04X"
928 " %02X %08X:%08X %02X:%08lX %08X %5d %8d %lu %d %p %d",
929 i, src, srcp, dest, destp, sp->sk_state,
930 atomic_read(&sp->sk_wmem_alloc),
931 atomic_read(&sp->sk_rmem_alloc),
932 0, 0L, 0, sock_i_uid(sp), 0, sock_i_ino(sp),
933 atomic_read(&sp->sk_refcnt), sp, atomic_read(&sp->sk_drops));
936 static int raw_seq_show(struct seq_file *seq, void *v)
938 if (v == SEQ_START_TOKEN)
939 seq_printf(seq, " sl local_address rem_address st tx_queue "
940 "rx_queue tr tm->when retrnsmt uid timeout "
943 raw_sock_seq_show(seq, v, raw_seq_private(seq)->bucket);
947 static const struct seq_operations raw_seq_ops = {
948 .start = raw_seq_start,
949 .next = raw_seq_next,
950 .stop = raw_seq_stop,
951 .show = raw_seq_show,
954 int raw_seq_open(struct inode *ino, struct file *file,
955 struct raw_hashinfo *h, const struct seq_operations *ops)
958 struct raw_iter_state *i;
960 err = seq_open_net(ino, file, ops, sizeof(struct raw_iter_state));
964 i = raw_seq_private((struct seq_file *)file->private_data);
968 EXPORT_SYMBOL_GPL(raw_seq_open);
970 static int raw_v4_seq_open(struct inode *inode, struct file *file)
972 return raw_seq_open(inode, file, &raw_v4_hashinfo, &raw_seq_ops);
975 static const struct file_operations raw_seq_fops = {
976 .owner = THIS_MODULE,
977 .open = raw_v4_seq_open,
980 .release = seq_release_net,
983 static __net_init int raw_init_net(struct net *net)
985 if (!proc_net_fops_create(net, "raw", S_IRUGO, &raw_seq_fops))
991 static __net_exit void raw_exit_net(struct net *net)
993 proc_net_remove(net, "raw");
996 static __net_initdata struct pernet_operations raw_net_ops = {
997 .init = raw_init_net,
998 .exit = raw_exit_net,
1001 int __init raw_proc_init(void)
1003 return register_pernet_subsys(&raw_net_ops);
1006 void __init raw_proc_exit(void)
1008 unregister_pernet_subsys(&raw_net_ops);
1010 #endif /* CONFIG_PROC_FS */