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(),
87 void raw_hash_sk(struct sock *sk, struct raw_hashinfo *h)
89 struct hlist_head *head;
91 head = &h->ht[inet_sk(sk)->num & (RAW_HTABLE_SIZE - 1)];
93 write_lock_bh(&h->lock);
94 sk_add_node(sk, head);
95 sock_prot_inuse_add(sk->sk_prot, 1);
96 write_unlock_bh(&h->lock);
98 EXPORT_SYMBOL_GPL(raw_hash_sk);
100 void raw_unhash_sk(struct sock *sk, struct raw_hashinfo *h)
102 write_lock_bh(&h->lock);
103 if (sk_del_node_init(sk))
104 sock_prot_inuse_add(sk->sk_prot, -1);
105 write_unlock_bh(&h->lock);
107 EXPORT_SYMBOL_GPL(raw_unhash_sk);
109 static void raw_v4_hash(struct sock *sk)
111 raw_hash_sk(sk, &raw_v4_hashinfo);
114 static void raw_v4_unhash(struct sock *sk)
116 raw_unhash_sk(sk, &raw_v4_hashinfo);
119 static struct sock *__raw_v4_lookup(struct net *net, struct sock *sk,
120 unsigned short num, __be32 raddr, __be32 laddr, int dif)
122 struct hlist_node *node;
124 sk_for_each_from(sk, node) {
125 struct inet_sock *inet = inet_sk(sk);
127 if (sk->sk_net == net && inet->num == num &&
128 !(inet->daddr && inet->daddr != raddr) &&
129 !(inet->rcv_saddr && inet->rcv_saddr != laddr) &&
130 !(sk->sk_bound_dev_if && sk->sk_bound_dev_if != dif))
131 goto found; /* gotcha */
142 static __inline__ int icmp_filter(struct sock *sk, struct sk_buff *skb)
146 if (!pskb_may_pull(skb, sizeof(struct icmphdr)))
149 type = icmp_hdr(skb)->type;
151 __u32 data = raw_sk(sk)->filter.data;
153 return ((1 << type) & data) != 0;
156 /* Do not block unknown ICMP types */
160 /* IP input processing comes here for RAW socket delivery.
161 * Caller owns SKB, so we must make clones.
163 * RFC 1122: SHOULD pass TOS value up to the transport layer.
164 * -> It does. And not only TOS, but all IP header.
166 static int raw_v4_input(struct sk_buff *skb, struct iphdr *iph, int hash)
169 struct hlist_head *head;
173 read_lock(&raw_v4_hashinfo.lock);
174 head = &raw_v4_hashinfo.ht[hash];
175 if (hlist_empty(head))
178 net = skb->dev->nd_net;
179 sk = __raw_v4_lookup(net, __sk_head(head), iph->protocol,
180 iph->saddr, iph->daddr,
185 if (iph->protocol != IPPROTO_ICMP || !icmp_filter(sk, skb)) {
186 struct sk_buff *clone = skb_clone(skb, GFP_ATOMIC);
188 /* Not releasing hash table! */
192 sk = __raw_v4_lookup(net, sk_next(sk), iph->protocol,
193 iph->saddr, iph->daddr,
197 read_unlock(&raw_v4_hashinfo.lock);
201 int raw_local_deliver(struct sk_buff *skb, int protocol)
206 hash = protocol & (RAW_HTABLE_SIZE - 1);
207 raw_sk = sk_head(&raw_v4_hashinfo.ht[hash]);
209 /* If there maybe a raw socket we must check - if not we
212 if (raw_sk && !raw_v4_input(skb, ip_hdr(skb), hash))
215 return raw_sk != NULL;
219 static void raw_err(struct sock *sk, struct sk_buff *skb, u32 info)
221 struct inet_sock *inet = inet_sk(sk);
222 const int type = icmp_hdr(skb)->type;
223 const int code = icmp_hdr(skb)->code;
227 /* Report error on raw socket, if:
228 1. User requested ip_recverr.
229 2. Socket is connected (otherwise the error indication
230 is useless without ip_recverr and error is hard.
232 if (!inet->recverr && sk->sk_state != TCP_ESTABLISHED)
237 case ICMP_TIME_EXCEEDED:
240 case ICMP_SOURCE_QUENCH:
242 case ICMP_PARAMETERPROB:
246 case ICMP_DEST_UNREACH:
248 if (code > NR_ICMP_UNREACH)
250 err = icmp_err_convert[code].errno;
251 harderr = icmp_err_convert[code].fatal;
252 if (code == ICMP_FRAG_NEEDED) {
253 harderr = inet->pmtudisc != IP_PMTUDISC_DONT;
259 struct iphdr *iph = (struct iphdr*)skb->data;
260 u8 *payload = skb->data + (iph->ihl << 2);
264 ip_icmp_error(sk, skb, err, 0, info, payload);
267 if (inet->recverr || harderr) {
269 sk->sk_error_report(sk);
273 void raw_icmp_error(struct sk_buff *skb, int protocol, u32 info)
280 hash = protocol & (RAW_HTABLE_SIZE - 1);
282 read_lock(&raw_v4_hashinfo.lock);
283 raw_sk = sk_head(&raw_v4_hashinfo.ht[hash]);
284 if (raw_sk != NULL) {
285 iph = (struct iphdr *)skb->data;
286 net = skb->dev->nd_net;
288 while ((raw_sk = __raw_v4_lookup(net, raw_sk, protocol,
289 iph->daddr, iph->saddr,
290 skb->dev->ifindex)) != NULL) {
291 raw_err(raw_sk, skb, info);
292 raw_sk = sk_next(raw_sk);
293 iph = (struct iphdr *)skb->data;
296 read_unlock(&raw_v4_hashinfo.lock);
299 static int raw_rcv_skb(struct sock * sk, struct sk_buff * skb)
301 /* Charge it to the socket. */
303 if (sock_queue_rcv_skb(sk, skb) < 0) {
304 atomic_inc(&sk->sk_drops);
309 return NET_RX_SUCCESS;
312 int raw_rcv(struct sock *sk, struct sk_buff *skb)
314 if (!xfrm4_policy_check(sk, XFRM_POLICY_IN, skb)) {
315 atomic_inc(&sk->sk_drops);
321 skb_push(skb, skb->data - skb_network_header(skb));
323 raw_rcv_skb(sk, skb);
327 static int raw_send_hdrinc(struct sock *sk, void *from, size_t length,
331 struct inet_sock *inet = inet_sk(sk);
338 if (length > rt->u.dst.dev->mtu) {
339 ip_local_error(sk, EMSGSIZE, rt->rt_dst, inet->dport,
346 hh_len = LL_RESERVED_SPACE(rt->u.dst.dev);
348 skb = sock_alloc_send_skb(sk, length+hh_len+15,
349 flags&MSG_DONTWAIT, &err);
352 skb_reserve(skb, hh_len);
354 skb->priority = sk->sk_priority;
355 skb->mark = sk->sk_mark;
356 skb->dst = dst_clone(&rt->u.dst);
358 skb_reset_network_header(skb);
360 skb_put(skb, length);
362 skb->ip_summed = CHECKSUM_NONE;
364 skb->transport_header = skb->network_header;
365 err = memcpy_fromiovecend((void *)iph, from, 0, length);
369 /* We don't modify invalid header */
370 iphlen = iph->ihl * 4;
371 if (iphlen >= sizeof(*iph) && iphlen <= length) {
373 iph->saddr = rt->rt_src;
375 iph->tot_len = htons(length);
377 ip_select_ident(iph, &rt->u.dst, NULL);
379 iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
381 if (iph->protocol == IPPROTO_ICMP)
382 icmp_out_count(((struct icmphdr *)
383 skb_transport_header(skb))->type);
385 err = NF_HOOK(PF_INET, NF_INET_LOCAL_OUT, skb, NULL, rt->u.dst.dev,
388 err = inet->recverr ? net_xmit_errno(err) : 0;
398 IP_INC_STATS(IPSTATS_MIB_OUTDISCARDS);
402 static int raw_probe_proto_opt(struct flowi *fl, struct msghdr *msg)
405 u8 __user *type = NULL;
406 u8 __user *code = NULL;
413 for (i = 0; i < msg->msg_iovlen; i++) {
414 iov = &msg->msg_iov[i];
420 /* check if one-byte field is readable or not. */
421 if (iov->iov_base && iov->iov_len < 1)
425 type = iov->iov_base;
426 /* check if code field is readable or not. */
427 if (iov->iov_len > 1)
430 code = iov->iov_base;
433 if (get_user(fl->fl_icmp_type, type) ||
434 get_user(fl->fl_icmp_code, code))
449 static int raw_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
452 struct inet_sock *inet = inet_sk(sk);
453 struct ipcm_cookie ipc;
454 struct rtable *rt = NULL;
470 if (msg->msg_flags & MSG_OOB) /* Mirror BSD error message */
471 goto out; /* compatibility */
474 * Get and verify the address.
477 if (msg->msg_namelen) {
478 struct sockaddr_in *usin = (struct sockaddr_in*)msg->msg_name;
480 if (msg->msg_namelen < sizeof(*usin))
482 if (usin->sin_family != AF_INET) {
483 static int complained;
485 printk(KERN_INFO "%s forgot to set AF_INET in "
486 "raw sendmsg. Fix it!\n",
489 if (usin->sin_family)
492 daddr = usin->sin_addr.s_addr;
493 /* ANK: I did not forget to get protocol from port field.
494 * I just do not know, who uses this weirdness.
495 * IP_HDRINCL is much more convenient.
499 if (sk->sk_state != TCP_ESTABLISHED)
504 ipc.addr = inet->saddr;
506 ipc.oif = sk->sk_bound_dev_if;
508 if (msg->msg_controllen) {
509 err = ip_cmsg_send(msg, &ipc);
524 /* Linux does not mangle headers on raw sockets,
525 * so that IP options + IP_HDRINCL is non-sense.
532 daddr = ipc.opt->faddr;
535 tos = RT_CONN_FLAGS(sk);
536 if (msg->msg_flags & MSG_DONTROUTE)
539 if (ipv4_is_multicast(daddr)) {
541 ipc.oif = inet->mc_index;
543 saddr = inet->mc_addr;
547 struct flowi fl = { .oif = ipc.oif,
553 .proto = inet->hdrincl ? IPPROTO_RAW :
556 if (!inet->hdrincl) {
557 err = raw_probe_proto_opt(&fl, msg);
562 security_sk_classify_flow(sk, &fl);
563 err = ip_route_output_flow(&init_net, &rt, &fl, sk, 1);
569 if (rt->rt_flags & RTCF_BROADCAST && !sock_flag(sk, SOCK_BROADCAST))
572 if (msg->msg_flags & MSG_CONFIRM)
577 err = raw_send_hdrinc(sk, msg->msg_iov, len,
582 ipc.addr = rt->rt_dst;
584 err = ip_append_data(sk, ip_generic_getfrag, msg->msg_iov, len, 0,
585 &ipc, rt, msg->msg_flags);
587 ip_flush_pending_frames(sk);
588 else if (!(msg->msg_flags & MSG_MORE))
589 err = ip_push_pending_frames(sk);
603 dst_confirm(&rt->u.dst);
604 if (!(msg->msg_flags & MSG_PROBE) || len)
605 goto back_from_confirm;
610 static void raw_close(struct sock *sk, long timeout)
613 * Raw sockets may have direct kernel refereneces. Kill them.
615 ip_ra_control(sk, 0, NULL);
617 sk_common_release(sk);
620 /* This gets rid of all the nasties in af_inet. -DaveM */
621 static int raw_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
623 struct inet_sock *inet = inet_sk(sk);
624 struct sockaddr_in *addr = (struct sockaddr_in *) uaddr;
628 if (sk->sk_state != TCP_CLOSE || addr_len < sizeof(struct sockaddr_in))
630 chk_addr_ret = inet_addr_type(sk->sk_net, addr->sin_addr.s_addr);
631 ret = -EADDRNOTAVAIL;
632 if (addr->sin_addr.s_addr && chk_addr_ret != RTN_LOCAL &&
633 chk_addr_ret != RTN_MULTICAST && chk_addr_ret != RTN_BROADCAST)
635 inet->rcv_saddr = inet->saddr = addr->sin_addr.s_addr;
636 if (chk_addr_ret == RTN_MULTICAST || chk_addr_ret == RTN_BROADCAST)
637 inet->saddr = 0; /* Use device */
644 * This should be easy, if there is something there
645 * we return it, otherwise we block.
648 static int raw_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
649 size_t len, int noblock, int flags, int *addr_len)
651 struct inet_sock *inet = inet_sk(sk);
653 int err = -EOPNOTSUPP;
654 struct sockaddr_in *sin = (struct sockaddr_in *)msg->msg_name;
661 *addr_len = sizeof(*sin);
663 if (flags & MSG_ERRQUEUE) {
664 err = ip_recv_error(sk, msg, len);
668 skb = skb_recv_datagram(sk, flags, noblock, &err);
674 msg->msg_flags |= MSG_TRUNC;
678 err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
682 sock_recv_timestamp(msg, sk, skb);
684 /* Copy the address. */
686 sin->sin_family = AF_INET;
687 sin->sin_addr.s_addr = ip_hdr(skb)->saddr;
689 memset(&sin->sin_zero, 0, sizeof(sin->sin_zero));
691 if (inet->cmsg_flags)
692 ip_cmsg_recv(msg, skb);
693 if (flags & MSG_TRUNC)
696 skb_free_datagram(sk, skb);
703 static int raw_init(struct sock *sk)
705 struct raw_sock *rp = raw_sk(sk);
707 if (inet_sk(sk)->num == IPPROTO_ICMP)
708 memset(&rp->filter, 0, sizeof(rp->filter));
712 static int raw_seticmpfilter(struct sock *sk, char __user *optval, int optlen)
714 if (optlen > sizeof(struct icmp_filter))
715 optlen = sizeof(struct icmp_filter);
716 if (copy_from_user(&raw_sk(sk)->filter, optval, optlen))
721 static int raw_geticmpfilter(struct sock *sk, char __user *optval, int __user *optlen)
723 int len, ret = -EFAULT;
725 if (get_user(len, optlen))
730 if (len > sizeof(struct icmp_filter))
731 len = sizeof(struct icmp_filter);
733 if (put_user(len, optlen) ||
734 copy_to_user(optval, &raw_sk(sk)->filter, len))
740 static int do_raw_setsockopt(struct sock *sk, int level, int optname,
741 char __user *optval, int optlen)
743 if (optname == ICMP_FILTER) {
744 if (inet_sk(sk)->num != IPPROTO_ICMP)
747 return raw_seticmpfilter(sk, optval, optlen);
752 static int raw_setsockopt(struct sock *sk, int level, int optname,
753 char __user *optval, int optlen)
755 if (level != SOL_RAW)
756 return ip_setsockopt(sk, level, optname, optval, optlen);
757 return do_raw_setsockopt(sk, level, optname, optval, optlen);
761 static int compat_raw_setsockopt(struct sock *sk, int level, int optname,
762 char __user *optval, int optlen)
764 if (level != SOL_RAW)
765 return compat_ip_setsockopt(sk, level, optname, optval, optlen);
766 return do_raw_setsockopt(sk, level, optname, optval, optlen);
770 static int do_raw_getsockopt(struct sock *sk, int level, int optname,
771 char __user *optval, int __user *optlen)
773 if (optname == ICMP_FILTER) {
774 if (inet_sk(sk)->num != IPPROTO_ICMP)
777 return raw_geticmpfilter(sk, optval, optlen);
782 static int raw_getsockopt(struct sock *sk, int level, int optname,
783 char __user *optval, int __user *optlen)
785 if (level != SOL_RAW)
786 return ip_getsockopt(sk, level, optname, optval, optlen);
787 return do_raw_getsockopt(sk, level, optname, optval, optlen);
791 static int compat_raw_getsockopt(struct sock *sk, int level, int optname,
792 char __user *optval, int __user *optlen)
794 if (level != SOL_RAW)
795 return compat_ip_getsockopt(sk, level, optname, optval, optlen);
796 return do_raw_getsockopt(sk, level, optname, optval, optlen);
800 static int raw_ioctl(struct sock *sk, int cmd, unsigned long arg)
804 int amount = atomic_read(&sk->sk_wmem_alloc);
805 return put_user(amount, (int __user *)arg);
811 spin_lock_bh(&sk->sk_receive_queue.lock);
812 skb = skb_peek(&sk->sk_receive_queue);
815 spin_unlock_bh(&sk->sk_receive_queue.lock);
816 return put_user(amount, (int __user *)arg);
820 #ifdef CONFIG_IP_MROUTE
821 return ipmr_ioctl(sk, cmd, (void __user *)arg);
828 DEFINE_PROTO_INUSE(raw)
830 struct proto raw_prot = {
832 .owner = THIS_MODULE,
834 .connect = ip4_datagram_connect,
835 .disconnect = udp_disconnect,
838 .setsockopt = raw_setsockopt,
839 .getsockopt = raw_getsockopt,
840 .sendmsg = raw_sendmsg,
841 .recvmsg = raw_recvmsg,
843 .backlog_rcv = raw_rcv_skb,
845 .unhash = raw_v4_unhash,
846 .obj_size = sizeof(struct raw_sock),
848 .compat_setsockopt = compat_raw_setsockopt,
849 .compat_getsockopt = compat_raw_getsockopt,
854 #ifdef CONFIG_PROC_FS
855 static struct sock *raw_get_first(struct seq_file *seq)
858 struct raw_iter_state* state = raw_seq_private(seq);
860 for (state->bucket = 0; state->bucket < RAW_HTABLE_SIZE;
862 struct hlist_node *node;
864 sk_for_each(sk, node, &state->h->ht[state->bucket])
865 if (sk->sk_net == state->p.net)
873 static struct sock *raw_get_next(struct seq_file *seq, struct sock *sk)
875 struct raw_iter_state* state = raw_seq_private(seq);
881 } while (sk && sk->sk_net != state->p.net);
883 if (!sk && ++state->bucket < RAW_HTABLE_SIZE) {
884 sk = sk_head(&state->h->ht[state->bucket]);
890 static struct sock *raw_get_idx(struct seq_file *seq, loff_t pos)
892 struct sock *sk = raw_get_first(seq);
895 while (pos && (sk = raw_get_next(seq, sk)) != NULL)
897 return pos ? NULL : sk;
900 void *raw_seq_start(struct seq_file *seq, loff_t *pos)
902 struct raw_iter_state *state = raw_seq_private(seq);
904 read_lock(&state->h->lock);
905 return *pos ? raw_get_idx(seq, *pos - 1) : SEQ_START_TOKEN;
907 EXPORT_SYMBOL_GPL(raw_seq_start);
909 void *raw_seq_next(struct seq_file *seq, void *v, loff_t *pos)
913 if (v == SEQ_START_TOKEN)
914 sk = raw_get_first(seq);
916 sk = raw_get_next(seq, v);
920 EXPORT_SYMBOL_GPL(raw_seq_next);
922 void raw_seq_stop(struct seq_file *seq, void *v)
924 struct raw_iter_state *state = raw_seq_private(seq);
926 read_unlock(&state->h->lock);
928 EXPORT_SYMBOL_GPL(raw_seq_stop);
930 static void raw_sock_seq_show(struct seq_file *seq, struct sock *sp, int i)
932 struct inet_sock *inet = inet_sk(sp);
933 __be32 dest = inet->daddr,
934 src = inet->rcv_saddr;
938 seq_printf(seq, "%4d: %08X:%04X %08X:%04X"
939 " %02X %08X:%08X %02X:%08lX %08X %5d %8d %lu %d %p %d",
940 i, src, srcp, dest, destp, sp->sk_state,
941 atomic_read(&sp->sk_wmem_alloc),
942 atomic_read(&sp->sk_rmem_alloc),
943 0, 0L, 0, sock_i_uid(sp), 0, sock_i_ino(sp),
944 atomic_read(&sp->sk_refcnt), sp, atomic_read(&sp->sk_drops));
947 static int raw_seq_show(struct seq_file *seq, void *v)
949 if (v == SEQ_START_TOKEN)
950 seq_printf(seq, " sl local_address rem_address st tx_queue "
951 "rx_queue tr tm->when retrnsmt uid timeout "
954 raw_sock_seq_show(seq, v, raw_seq_private(seq)->bucket);
958 static const struct seq_operations raw_seq_ops = {
959 .start = raw_seq_start,
960 .next = raw_seq_next,
961 .stop = raw_seq_stop,
962 .show = raw_seq_show,
965 int raw_seq_open(struct inode *ino, struct file *file,
966 struct raw_hashinfo *h, const struct seq_operations *ops)
969 struct raw_iter_state *i;
971 err = seq_open_net(ino, file, ops, sizeof(struct raw_iter_state));
975 i = raw_seq_private((struct seq_file *)file->private_data);
979 EXPORT_SYMBOL_GPL(raw_seq_open);
981 static int raw_v4_seq_open(struct inode *inode, struct file *file)
983 return raw_seq_open(inode, file, &raw_v4_hashinfo, &raw_seq_ops);
986 static const struct file_operations raw_seq_fops = {
987 .owner = THIS_MODULE,
988 .open = raw_v4_seq_open,
991 .release = seq_release_net,
994 static __net_init int raw_init_net(struct net *net)
996 if (!proc_net_fops_create(net, "raw", S_IRUGO, &raw_seq_fops))
1002 static __net_exit void raw_exit_net(struct net *net)
1004 proc_net_remove(net, "raw");
1007 static __net_initdata struct pernet_operations raw_net_ops = {
1008 .init = raw_init_net,
1009 .exit = raw_exit_net,
1012 int __init raw_proc_init(void)
1014 return register_pernet_subsys(&raw_net_ops);
1017 void __init raw_proc_exit(void)
1019 unregister_pernet_subsys(&raw_net_ops);
1021 #endif /* CONFIG_PROC_FS */