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, const 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 const struct iphdr *iph = (const 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)
268 const struct iphdr *iph;
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 = (const 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 = (const 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, struct flowi4 *fl4,
318 void *from, size_t length,
322 struct inet_sock *inet = inet_sk(sk);
323 struct net *net = sock_net(sk);
328 struct rtable *rt = *rtp;
330 if (length > rt->dst.dev->mtu) {
331 ip_local_error(sk, EMSGSIZE, fl4->daddr, inet->inet_dport,
338 skb = sock_alloc_send_skb(sk,
339 length + LL_ALLOCATED_SPACE(rt->dst.dev) + 15,
340 flags & MSG_DONTWAIT, &err);
343 skb_reserve(skb, LL_RESERVED_SPACE(rt->dst.dev));
345 skb->priority = sk->sk_priority;
346 skb->mark = sk->sk_mark;
347 skb_dst_set(skb, &rt->dst);
350 skb_reset_network_header(skb);
352 skb_put(skb, length);
354 skb->ip_summed = CHECKSUM_NONE;
356 skb->transport_header = skb->network_header;
358 if (memcpy_fromiovecend((void *)iph, from, 0, length))
361 iphlen = iph->ihl * 4;
364 * We don't want to modify the ip header, but we do need to
365 * be sure that it won't cause problems later along the network
366 * stack. Specifically we want to make sure that iph->ihl is a
367 * sane value. If ihl points beyond the length of the buffer passed
368 * in, reject the frame as invalid
374 if (iphlen >= sizeof(*iph)) {
376 iph->saddr = fl4->saddr;
378 iph->tot_len = htons(length);
380 ip_select_ident(iph, &rt->dst, NULL);
382 iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
384 if (iph->protocol == IPPROTO_ICMP)
385 icmp_out_count(net, ((struct icmphdr *)
386 skb_transport_header(skb))->type);
388 err = NF_HOOK(NFPROTO_IPV4, NF_INET_LOCAL_OUT, skb, NULL,
389 rt->dst.dev, dst_output);
391 err = net_xmit_errno(err);
400 IP_INC_STATS(net, IPSTATS_MIB_OUTDISCARDS);
401 if (err == -ENOBUFS && !inet->recverr)
406 static int raw_probe_proto_opt(struct flowi4 *fl4, struct msghdr *msg)
409 u8 __user *type = NULL;
410 u8 __user *code = NULL;
417 for (i = 0; i < msg->msg_iovlen; i++) {
418 iov = &msg->msg_iov[i];
422 switch (fl4->flowi4_proto) {
424 /* check if one-byte field is readable or not. */
425 if (iov->iov_base && iov->iov_len < 1)
429 type = iov->iov_base;
430 /* check if code field is readable or not. */
431 if (iov->iov_len > 1)
434 code = iov->iov_base;
437 if (get_user(fl4->fl4_icmp_type, type) ||
438 get_user(fl4->fl4_icmp_code, code))
453 static int raw_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
456 struct inet_sock *inet = inet_sk(sk);
457 struct ipcm_cookie ipc;
458 struct rtable *rt = NULL;
465 struct ip_options_data opt_copy;
476 if (msg->msg_flags & MSG_OOB) /* Mirror BSD error message */
477 goto out; /* compatibility */
480 * Get and verify the address.
483 if (msg->msg_namelen) {
484 struct sockaddr_in *usin = (struct sockaddr_in *)msg->msg_name;
486 if (msg->msg_namelen < sizeof(*usin))
488 if (usin->sin_family != AF_INET) {
489 static int complained;
491 printk(KERN_INFO "%s forgot to set AF_INET in "
492 "raw sendmsg. Fix it!\n",
495 if (usin->sin_family)
498 daddr = usin->sin_addr.s_addr;
499 /* ANK: I did not forget to get protocol from port field.
500 * I just do not know, who uses this weirdness.
501 * IP_HDRINCL is much more convenient.
505 if (sk->sk_state != TCP_ESTABLISHED)
507 daddr = inet->inet_daddr;
510 ipc.addr = inet->inet_saddr;
513 ipc.oif = sk->sk_bound_dev_if;
515 if (msg->msg_controllen) {
516 err = ip_cmsg_send(sock_net(sk), msg, &ipc);
527 struct ip_options_rcu *inet_opt;
530 inet_opt = rcu_dereference(inet->inet_opt);
532 memcpy(&opt_copy, inet_opt,
533 sizeof(*inet_opt) + inet_opt->opt.optlen);
534 ipc.opt = &opt_copy.opt;
541 /* Linux does not mangle headers on raw sockets,
542 * so that IP options + IP_HDRINCL is non-sense.
546 if (ipc.opt->opt.srr) {
549 daddr = ipc.opt->opt.faddr;
552 tos = RT_CONN_FLAGS(sk);
553 if (msg->msg_flags & MSG_DONTROUTE)
556 if (ipv4_is_multicast(daddr)) {
558 ipc.oif = inet->mc_index;
560 saddr = inet->mc_addr;
563 flowi4_init_output(&fl4, ipc.oif, sk->sk_mark, tos,
565 inet->hdrincl ? IPPROTO_RAW : sk->sk_protocol,
566 FLOWI_FLAG_CAN_SLEEP, daddr, saddr, 0, 0);
568 if (!inet->hdrincl) {
569 err = raw_probe_proto_opt(&fl4, msg);
574 security_sk_classify_flow(sk, flowi4_to_flowi(&fl4));
575 rt = ip_route_output_flow(sock_net(sk), &fl4, sk);
583 if (rt->rt_flags & RTCF_BROADCAST && !sock_flag(sk, SOCK_BROADCAST))
586 if (msg->msg_flags & MSG_CONFIRM)
591 err = raw_send_hdrinc(sk, &fl4, msg->msg_iov, len,
592 &rt, msg->msg_flags);
596 ipc.addr = fl4.daddr;
598 err = ip_append_data(sk, &fl4, ip_generic_getfrag,
599 msg->msg_iov, len, 0,
600 &ipc, &rt, msg->msg_flags);
602 ip_flush_pending_frames(sk);
603 else if (!(msg->msg_flags & MSG_MORE)) {
604 err = ip_push_pending_frames(sk, &fl4);
605 if (err == -ENOBUFS && !inet->recverr)
621 dst_confirm(&rt->dst);
622 if (!(msg->msg_flags & MSG_PROBE) || len)
623 goto back_from_confirm;
628 static void raw_close(struct sock *sk, long timeout)
631 * Raw sockets may have direct kernel references. Kill them.
633 ip_ra_control(sk, 0, NULL);
635 sk_common_release(sk);
638 static void raw_destroy(struct sock *sk)
641 ip_flush_pending_frames(sk);
645 /* This gets rid of all the nasties in af_inet. -DaveM */
646 static int raw_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
648 struct inet_sock *inet = inet_sk(sk);
649 struct sockaddr_in *addr = (struct sockaddr_in *) uaddr;
653 if (sk->sk_state != TCP_CLOSE || addr_len < sizeof(struct sockaddr_in))
655 chk_addr_ret = inet_addr_type(sock_net(sk), addr->sin_addr.s_addr);
656 ret = -EADDRNOTAVAIL;
657 if (addr->sin_addr.s_addr && chk_addr_ret != RTN_LOCAL &&
658 chk_addr_ret != RTN_MULTICAST && chk_addr_ret != RTN_BROADCAST)
660 inet->inet_rcv_saddr = inet->inet_saddr = addr->sin_addr.s_addr;
661 if (chk_addr_ret == RTN_MULTICAST || chk_addr_ret == RTN_BROADCAST)
662 inet->inet_saddr = 0; /* Use device */
669 * This should be easy, if there is something there
670 * we return it, otherwise we block.
673 static int raw_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
674 size_t len, int noblock, int flags, int *addr_len)
676 struct inet_sock *inet = inet_sk(sk);
678 int err = -EOPNOTSUPP;
679 struct sockaddr_in *sin = (struct sockaddr_in *)msg->msg_name;
686 *addr_len = sizeof(*sin);
688 if (flags & MSG_ERRQUEUE) {
689 err = ip_recv_error(sk, msg, len);
693 skb = skb_recv_datagram(sk, flags, noblock, &err);
699 msg->msg_flags |= MSG_TRUNC;
703 err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
707 sock_recv_ts_and_drops(msg, sk, skb);
709 /* Copy the address. */
711 sin->sin_family = AF_INET;
712 sin->sin_addr.s_addr = ip_hdr(skb)->saddr;
714 memset(&sin->sin_zero, 0, sizeof(sin->sin_zero));
716 if (inet->cmsg_flags)
717 ip_cmsg_recv(msg, skb);
718 if (flags & MSG_TRUNC)
721 skb_free_datagram(sk, skb);
728 static int raw_init(struct sock *sk)
730 struct raw_sock *rp = raw_sk(sk);
732 if (inet_sk(sk)->inet_num == IPPROTO_ICMP)
733 memset(&rp->filter, 0, sizeof(rp->filter));
737 static int raw_seticmpfilter(struct sock *sk, char __user *optval, int optlen)
739 if (optlen > sizeof(struct icmp_filter))
740 optlen = sizeof(struct icmp_filter);
741 if (copy_from_user(&raw_sk(sk)->filter, optval, optlen))
746 static int raw_geticmpfilter(struct sock *sk, char __user *optval, int __user *optlen)
748 int len, ret = -EFAULT;
750 if (get_user(len, optlen))
755 if (len > sizeof(struct icmp_filter))
756 len = sizeof(struct icmp_filter);
758 if (put_user(len, optlen) ||
759 copy_to_user(optval, &raw_sk(sk)->filter, len))
765 static int do_raw_setsockopt(struct sock *sk, int level, int optname,
766 char __user *optval, unsigned int optlen)
768 if (optname == ICMP_FILTER) {
769 if (inet_sk(sk)->inet_num != IPPROTO_ICMP)
772 return raw_seticmpfilter(sk, optval, optlen);
777 static int raw_setsockopt(struct sock *sk, int level, int optname,
778 char __user *optval, unsigned int optlen)
780 if (level != SOL_RAW)
781 return ip_setsockopt(sk, level, optname, optval, optlen);
782 return do_raw_setsockopt(sk, level, optname, optval, optlen);
786 static int compat_raw_setsockopt(struct sock *sk, int level, int optname,
787 char __user *optval, unsigned int optlen)
789 if (level != SOL_RAW)
790 return compat_ip_setsockopt(sk, level, optname, optval, optlen);
791 return do_raw_setsockopt(sk, level, optname, optval, optlen);
795 static int do_raw_getsockopt(struct sock *sk, int level, int optname,
796 char __user *optval, int __user *optlen)
798 if (optname == ICMP_FILTER) {
799 if (inet_sk(sk)->inet_num != IPPROTO_ICMP)
802 return raw_geticmpfilter(sk, optval, optlen);
807 static int raw_getsockopt(struct sock *sk, int level, int optname,
808 char __user *optval, int __user *optlen)
810 if (level != SOL_RAW)
811 return ip_getsockopt(sk, level, optname, optval, optlen);
812 return do_raw_getsockopt(sk, level, optname, optval, optlen);
816 static int compat_raw_getsockopt(struct sock *sk, int level, int optname,
817 char __user *optval, int __user *optlen)
819 if (level != SOL_RAW)
820 return compat_ip_getsockopt(sk, level, optname, optval, optlen);
821 return do_raw_getsockopt(sk, level, optname, optval, optlen);
825 static int raw_ioctl(struct sock *sk, int cmd, unsigned long arg)
829 int amount = sk_wmem_alloc_get(sk);
831 return put_user(amount, (int __user *)arg);
837 spin_lock_bh(&sk->sk_receive_queue.lock);
838 skb = skb_peek(&sk->sk_receive_queue);
841 spin_unlock_bh(&sk->sk_receive_queue.lock);
842 return put_user(amount, (int __user *)arg);
846 #ifdef CONFIG_IP_MROUTE
847 return ipmr_ioctl(sk, cmd, (void __user *)arg);
855 static int compat_raw_ioctl(struct sock *sk, unsigned int cmd, unsigned long arg)
862 #ifdef CONFIG_IP_MROUTE
863 return ipmr_compat_ioctl(sk, cmd, compat_ptr(arg));
871 struct proto raw_prot = {
873 .owner = THIS_MODULE,
875 .destroy = raw_destroy,
876 .connect = ip4_datagram_connect,
877 .disconnect = udp_disconnect,
880 .setsockopt = raw_setsockopt,
881 .getsockopt = raw_getsockopt,
882 .sendmsg = raw_sendmsg,
883 .recvmsg = raw_recvmsg,
885 .backlog_rcv = raw_rcv_skb,
887 .unhash = raw_unhash_sk,
888 .obj_size = sizeof(struct raw_sock),
889 .h.raw_hash = &raw_v4_hashinfo,
891 .compat_setsockopt = compat_raw_setsockopt,
892 .compat_getsockopt = compat_raw_getsockopt,
893 .compat_ioctl = compat_raw_ioctl,
897 #ifdef CONFIG_PROC_FS
898 static struct sock *raw_get_first(struct seq_file *seq)
901 struct raw_iter_state *state = raw_seq_private(seq);
903 for (state->bucket = 0; state->bucket < RAW_HTABLE_SIZE;
905 struct hlist_node *node;
907 sk_for_each(sk, node, &state->h->ht[state->bucket])
908 if (sock_net(sk) == seq_file_net(seq))
916 static struct sock *raw_get_next(struct seq_file *seq, struct sock *sk)
918 struct raw_iter_state *state = raw_seq_private(seq);
924 } while (sk && sock_net(sk) != seq_file_net(seq));
926 if (!sk && ++state->bucket < RAW_HTABLE_SIZE) {
927 sk = sk_head(&state->h->ht[state->bucket]);
933 static struct sock *raw_get_idx(struct seq_file *seq, loff_t pos)
935 struct sock *sk = raw_get_first(seq);
938 while (pos && (sk = raw_get_next(seq, sk)) != NULL)
940 return pos ? NULL : sk;
943 void *raw_seq_start(struct seq_file *seq, loff_t *pos)
945 struct raw_iter_state *state = raw_seq_private(seq);
947 read_lock(&state->h->lock);
948 return *pos ? raw_get_idx(seq, *pos - 1) : SEQ_START_TOKEN;
950 EXPORT_SYMBOL_GPL(raw_seq_start);
952 void *raw_seq_next(struct seq_file *seq, void *v, loff_t *pos)
956 if (v == SEQ_START_TOKEN)
957 sk = raw_get_first(seq);
959 sk = raw_get_next(seq, v);
963 EXPORT_SYMBOL_GPL(raw_seq_next);
965 void raw_seq_stop(struct seq_file *seq, void *v)
967 struct raw_iter_state *state = raw_seq_private(seq);
969 read_unlock(&state->h->lock);
971 EXPORT_SYMBOL_GPL(raw_seq_stop);
973 static void raw_sock_seq_show(struct seq_file *seq, struct sock *sp, int i)
975 struct inet_sock *inet = inet_sk(sp);
976 __be32 dest = inet->inet_daddr,
977 src = inet->inet_rcv_saddr;
979 srcp = inet->inet_num;
981 seq_printf(seq, "%4d: %08X:%04X %08X:%04X"
982 " %02X %08X:%08X %02X:%08lX %08X %5d %8d %lu %d %pK %d\n",
983 i, src, srcp, dest, destp, sp->sk_state,
984 sk_wmem_alloc_get(sp),
985 sk_rmem_alloc_get(sp),
986 0, 0L, 0, sock_i_uid(sp), 0, sock_i_ino(sp),
987 atomic_read(&sp->sk_refcnt), sp, atomic_read(&sp->sk_drops));
990 static int raw_seq_show(struct seq_file *seq, void *v)
992 if (v == SEQ_START_TOKEN)
993 seq_printf(seq, " sl local_address rem_address st tx_queue "
994 "rx_queue tr tm->when retrnsmt uid timeout "
995 "inode ref pointer drops\n");
997 raw_sock_seq_show(seq, v, raw_seq_private(seq)->bucket);
1001 static const struct seq_operations raw_seq_ops = {
1002 .start = raw_seq_start,
1003 .next = raw_seq_next,
1004 .stop = raw_seq_stop,
1005 .show = raw_seq_show,
1008 int raw_seq_open(struct inode *ino, struct file *file,
1009 struct raw_hashinfo *h, const struct seq_operations *ops)
1012 struct raw_iter_state *i;
1014 err = seq_open_net(ino, file, ops, sizeof(struct raw_iter_state));
1018 i = raw_seq_private((struct seq_file *)file->private_data);
1022 EXPORT_SYMBOL_GPL(raw_seq_open);
1024 static int raw_v4_seq_open(struct inode *inode, struct file *file)
1026 return raw_seq_open(inode, file, &raw_v4_hashinfo, &raw_seq_ops);
1029 static const struct file_operations raw_seq_fops = {
1030 .owner = THIS_MODULE,
1031 .open = raw_v4_seq_open,
1033 .llseek = seq_lseek,
1034 .release = seq_release_net,
1037 static __net_init int raw_init_net(struct net *net)
1039 if (!proc_net_fops_create(net, "raw", S_IRUGO, &raw_seq_fops))
1045 static __net_exit void raw_exit_net(struct net *net)
1047 proc_net_remove(net, "raw");
1050 static __net_initdata struct pernet_operations raw_net_ops = {
1051 .init = raw_init_net,
1052 .exit = raw_exit_net,
1055 int __init raw_proc_init(void)
1057 return register_pernet_subsys(&raw_net_ops);
1060 void __init raw_proc_exit(void)
1062 unregister_pernet_subsys(&raw_net_ops);
1064 #endif /* CONFIG_PROC_FS */