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 <linux/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/export.h>
52 #include <linux/spinlock.h>
53 #include <linux/sockios.h>
54 #include <linux/socket.h>
56 #include <linux/mroute.h>
57 #include <linux/netdevice.h>
58 #include <linux/in_route.h>
59 #include <linux/route.h>
60 #include <linux/skbuff.h>
61 #include <net/net_namespace.h>
65 #include <linux/net.h>
71 #include <net/tcp_states.h>
72 #include <net/inet_common.h>
73 #include <net/checksum.h>
75 #include <linux/rtnetlink.h>
76 #include <linux/proc_fs.h>
77 #include <linux/seq_file.h>
78 #include <linux/netfilter.h>
79 #include <linux/netfilter_ipv4.h>
80 #include <linux/compat.h>
82 static struct raw_hashinfo raw_v4_hashinfo = {
83 .lock = __RW_LOCK_UNLOCKED(raw_v4_hashinfo.lock),
86 void raw_hash_sk(struct sock *sk)
88 struct raw_hashinfo *h = sk->sk_prot->h.raw_hash;
89 struct hlist_head *head;
91 head = &h->ht[inet_sk(sk)->inet_num & (RAW_HTABLE_SIZE - 1)];
93 write_lock_bh(&h->lock);
94 sk_add_node(sk, head);
95 sock_prot_inuse_add(sock_net(sk), 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)
102 struct raw_hashinfo *h = sk->sk_prot->h.raw_hash;
104 write_lock_bh(&h->lock);
105 if (sk_del_node_init(sk))
106 sock_prot_inuse_add(sock_net(sk), sk->sk_prot, -1);
107 write_unlock_bh(&h->lock);
109 EXPORT_SYMBOL_GPL(raw_unhash_sk);
111 static struct sock *__raw_v4_lookup(struct net *net, struct sock *sk,
112 unsigned short num, __be32 raddr, __be32 laddr, int dif)
114 struct hlist_node *node;
116 sk_for_each_from(sk, node) {
117 struct inet_sock *inet = inet_sk(sk);
119 if (net_eq(sock_net(sk), net) && inet->inet_num == num &&
120 !(inet->inet_daddr && inet->inet_daddr != raddr) &&
121 !(inet->inet_rcv_saddr && inet->inet_rcv_saddr != laddr) &&
122 !(sk->sk_bound_dev_if && sk->sk_bound_dev_if != dif))
123 goto found; /* gotcha */
134 static int icmp_filter(const struct sock *sk, const struct sk_buff *skb)
137 const struct icmphdr *hdr;
139 hdr = skb_header_pointer(skb, skb_transport_offset(skb),
140 sizeof(_hdr), &_hdr);
144 if (hdr->type < 32) {
145 __u32 data = raw_sk(sk)->filter.data;
147 return ((1U << hdr->type) & data) != 0;
150 /* Do not block unknown ICMP types */
154 /* IP input processing comes here for RAW socket delivery.
155 * Caller owns SKB, so we must make clones.
157 * RFC 1122: SHOULD pass TOS value up to the transport layer.
158 * -> It does. And not only TOS, but all IP header.
160 static int raw_v4_input(struct sk_buff *skb, const struct iphdr *iph, int hash)
163 struct hlist_head *head;
167 read_lock(&raw_v4_hashinfo.lock);
168 head = &raw_v4_hashinfo.ht[hash];
169 if (hlist_empty(head))
172 net = dev_net(skb->dev);
173 sk = __raw_v4_lookup(net, __sk_head(head), iph->protocol,
174 iph->saddr, iph->daddr,
179 if (iph->protocol != IPPROTO_ICMP || !icmp_filter(sk, skb)) {
180 struct sk_buff *clone = skb_clone(skb, GFP_ATOMIC);
182 /* Not releasing hash table! */
186 sk = __raw_v4_lookup(net, sk_next(sk), iph->protocol,
187 iph->saddr, iph->daddr,
191 read_unlock(&raw_v4_hashinfo.lock);
195 int raw_local_deliver(struct sk_buff *skb, int protocol)
200 hash = protocol & (RAW_HTABLE_SIZE - 1);
201 raw_sk = sk_head(&raw_v4_hashinfo.ht[hash]);
203 /* If there maybe a raw socket we must check - if not we
206 if (raw_sk && !raw_v4_input(skb, ip_hdr(skb), hash))
209 return raw_sk != NULL;
213 static void raw_err(struct sock *sk, struct sk_buff *skb, u32 info)
215 struct inet_sock *inet = inet_sk(sk);
216 const int type = icmp_hdr(skb)->type;
217 const int code = icmp_hdr(skb)->code;
221 /* Report error on raw socket, if:
222 1. User requested ip_recverr.
223 2. Socket is connected (otherwise the error indication
224 is useless without ip_recverr and error is hard.
226 if (!inet->recverr && sk->sk_state != TCP_ESTABLISHED)
231 case ICMP_TIME_EXCEEDED:
234 case ICMP_SOURCE_QUENCH:
236 case ICMP_PARAMETERPROB:
240 case ICMP_DEST_UNREACH:
242 if (code > NR_ICMP_UNREACH)
244 err = icmp_err_convert[code].errno;
245 harderr = icmp_err_convert[code].fatal;
246 if (code == ICMP_FRAG_NEEDED) {
247 harderr = inet->pmtudisc != IP_PMTUDISC_DONT;
253 const struct iphdr *iph = (const struct iphdr *)skb->data;
254 u8 *payload = skb->data + (iph->ihl << 2);
258 ip_icmp_error(sk, skb, err, 0, info, payload);
261 if (inet->recverr || harderr) {
263 sk->sk_error_report(sk);
267 void raw_icmp_error(struct sk_buff *skb, int protocol, u32 info)
271 const struct iphdr *iph;
274 hash = protocol & (RAW_HTABLE_SIZE - 1);
276 read_lock(&raw_v4_hashinfo.lock);
277 raw_sk = sk_head(&raw_v4_hashinfo.ht[hash]);
278 if (raw_sk != NULL) {
279 iph = (const struct iphdr *)skb->data;
280 net = dev_net(skb->dev);
282 while ((raw_sk = __raw_v4_lookup(net, raw_sk, protocol,
283 iph->daddr, iph->saddr,
284 skb->dev->ifindex)) != NULL) {
285 raw_err(raw_sk, skb, info);
286 raw_sk = sk_next(raw_sk);
287 iph = (const struct iphdr *)skb->data;
290 read_unlock(&raw_v4_hashinfo.lock);
293 static int raw_rcv_skb(struct sock * sk, struct sk_buff * skb)
295 /* Charge it to the socket. */
297 if (ip_queue_rcv_skb(sk, skb) < 0) {
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, struct flowi4 *fl4,
321 void *from, size_t length,
325 struct inet_sock *inet = inet_sk(sk);
326 struct net *net = sock_net(sk);
331 struct rtable *rt = *rtp;
334 if (length > rt->dst.dev->mtu) {
335 ip_local_error(sk, EMSGSIZE, fl4->daddr, inet->inet_dport,
342 hlen = LL_RESERVED_SPACE(rt->dst.dev);
343 tlen = rt->dst.dev->needed_tailroom;
344 skb = sock_alloc_send_skb(sk,
345 length + hlen + tlen + 15,
346 flags & MSG_DONTWAIT, &err);
349 skb_reserve(skb, hlen);
351 skb->priority = sk->sk_priority;
352 skb->mark = sk->sk_mark;
353 skb_dst_set(skb, &rt->dst);
356 skb_reset_network_header(skb);
358 skb_put(skb, length);
360 skb->ip_summed = CHECKSUM_NONE;
362 skb->transport_header = skb->network_header;
364 if (memcpy_fromiovecend((void *)iph, from, 0, length))
367 iphlen = iph->ihl * 4;
370 * We don't want to modify the ip header, but we do need to
371 * be sure that it won't cause problems later along the network
372 * stack. Specifically we want to make sure that iph->ihl is a
373 * sane value. If ihl points beyond the length of the buffer passed
374 * in, reject the frame as invalid
380 if (iphlen >= sizeof(*iph)) {
382 iph->saddr = fl4->saddr;
384 iph->tot_len = htons(length);
386 ip_select_ident(skb, NULL);
388 iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
390 if (iph->protocol == IPPROTO_ICMP)
391 icmp_out_count(net, ((struct icmphdr *)
392 skb_transport_header(skb))->type);
394 err = NF_HOOK(NFPROTO_IPV4, NF_INET_LOCAL_OUT, skb, NULL,
395 rt->dst.dev, dst_output);
397 err = net_xmit_errno(err);
406 IP_INC_STATS(net, IPSTATS_MIB_OUTDISCARDS);
407 if (err == -ENOBUFS && !inet->recverr)
412 static int raw_probe_proto_opt(struct flowi4 *fl4, struct msghdr *msg)
415 u8 __user *type = NULL;
416 u8 __user *code = NULL;
423 for (i = 0; i < msg->msg_iovlen; i++) {
424 iov = &msg->msg_iov[i];
428 switch (fl4->flowi4_proto) {
430 /* check if one-byte field is readable or not. */
431 if (iov->iov_base && iov->iov_len < 1)
435 type = iov->iov_base;
436 /* check if code field is readable or not. */
437 if (iov->iov_len > 1)
440 code = iov->iov_base;
443 if (get_user(fl4->fl4_icmp_type, type) ||
444 get_user(fl4->fl4_icmp_code, code))
459 static int raw_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
462 struct inet_sock *inet = inet_sk(sk);
463 struct ipcm_cookie ipc;
464 struct rtable *rt = NULL;
471 struct ip_options_data opt_copy;
482 if (msg->msg_flags & MSG_OOB) /* Mirror BSD error message */
483 goto out; /* compatibility */
486 * Get and verify the address.
489 if (msg->msg_namelen) {
490 struct sockaddr_in *usin = (struct sockaddr_in *)msg->msg_name;
492 if (msg->msg_namelen < sizeof(*usin))
494 if (usin->sin_family != AF_INET) {
495 static int complained;
497 printk(KERN_INFO "%s forgot to set AF_INET in "
498 "raw sendmsg. Fix it!\n",
501 if (usin->sin_family)
504 daddr = usin->sin_addr.s_addr;
505 /* ANK: I did not forget to get protocol from port field.
506 * I just do not know, who uses this weirdness.
507 * IP_HDRINCL is much more convenient.
511 if (sk->sk_state != TCP_ESTABLISHED)
513 daddr = inet->inet_daddr;
516 ipc.addr = inet->inet_saddr;
519 ipc.oif = sk->sk_bound_dev_if;
521 if (msg->msg_controllen) {
522 err = ip_cmsg_send(sock_net(sk), msg, &ipc);
533 struct ip_options_rcu *inet_opt;
536 inet_opt = rcu_dereference(inet->inet_opt);
538 memcpy(&opt_copy, inet_opt,
539 sizeof(*inet_opt) + inet_opt->opt.optlen);
540 ipc.opt = &opt_copy.opt;
547 /* Linux does not mangle headers on raw sockets,
548 * so that IP options + IP_HDRINCL is non-sense.
552 if (ipc.opt->opt.srr) {
555 daddr = ipc.opt->opt.faddr;
558 tos = RT_CONN_FLAGS(sk);
559 if (msg->msg_flags & MSG_DONTROUTE)
562 if (ipv4_is_multicast(daddr)) {
564 ipc.oif = inet->mc_index;
566 saddr = inet->mc_addr;
569 flowi4_init_output(&fl4, ipc.oif, sk->sk_mark, tos,
571 inet->hdrincl ? IPPROTO_RAW : sk->sk_protocol,
572 inet_sk_flowi_flags(sk) | FLOWI_FLAG_CAN_SLEEP,
575 if (!inet->hdrincl) {
576 err = raw_probe_proto_opt(&fl4, msg);
581 security_sk_classify_flow(sk, flowi4_to_flowi(&fl4));
582 rt = ip_route_output_flow(sock_net(sk), &fl4, sk);
590 if (rt->rt_flags & RTCF_BROADCAST && !sock_flag(sk, SOCK_BROADCAST))
593 if (msg->msg_flags & MSG_CONFIRM)
598 err = raw_send_hdrinc(sk, &fl4, msg->msg_iov, len,
599 &rt, msg->msg_flags);
603 ipc.addr = fl4.daddr;
605 err = ip_append_data(sk, &fl4, ip_generic_getfrag,
606 msg->msg_iov, len, 0,
607 &ipc, &rt, msg->msg_flags);
609 ip_flush_pending_frames(sk);
610 else if (!(msg->msg_flags & MSG_MORE)) {
611 err = ip_push_pending_frames(sk, &fl4);
612 if (err == -ENOBUFS && !inet->recverr)
628 dst_confirm(&rt->dst);
629 if (!(msg->msg_flags & MSG_PROBE) || len)
630 goto back_from_confirm;
635 static void raw_close(struct sock *sk, long timeout)
638 * Raw sockets may have direct kernel references. Kill them.
640 ip_ra_control(sk, 0, NULL);
642 sk_common_release(sk);
645 static void raw_destroy(struct sock *sk)
648 ip_flush_pending_frames(sk);
652 /* This gets rid of all the nasties in af_inet. -DaveM */
653 static int raw_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
655 struct inet_sock *inet = inet_sk(sk);
656 struct sockaddr_in *addr = (struct sockaddr_in *) uaddr;
660 if (sk->sk_state != TCP_CLOSE || addr_len < sizeof(struct sockaddr_in))
662 chk_addr_ret = inet_addr_type(sock_net(sk), addr->sin_addr.s_addr);
663 ret = -EADDRNOTAVAIL;
664 if (addr->sin_addr.s_addr && chk_addr_ret != RTN_LOCAL &&
665 chk_addr_ret != RTN_MULTICAST && chk_addr_ret != RTN_BROADCAST)
667 inet->inet_rcv_saddr = inet->inet_saddr = addr->sin_addr.s_addr;
668 if (chk_addr_ret == RTN_MULTICAST || chk_addr_ret == RTN_BROADCAST)
669 inet->inet_saddr = 0; /* Use device */
676 * This should be easy, if there is something there
677 * we return it, otherwise we block.
680 static int raw_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
681 size_t len, int noblock, int flags, int *addr_len)
683 struct inet_sock *inet = inet_sk(sk);
685 int err = -EOPNOTSUPP;
686 struct sockaddr_in *sin = (struct sockaddr_in *)msg->msg_name;
692 if (flags & MSG_ERRQUEUE) {
693 err = ip_recv_error(sk, msg, len, addr_len);
697 skb = skb_recv_datagram(sk, flags, noblock, &err);
703 msg->msg_flags |= MSG_TRUNC;
707 err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
711 sock_recv_ts_and_drops(msg, sk, skb);
713 /* Copy the address. */
715 sin->sin_family = AF_INET;
716 sin->sin_addr.s_addr = ip_hdr(skb)->saddr;
718 memset(&sin->sin_zero, 0, sizeof(sin->sin_zero));
719 *addr_len = sizeof(*sin);
721 if (inet->cmsg_flags)
722 ip_cmsg_recv(msg, skb);
723 if (flags & MSG_TRUNC)
726 skb_free_datagram(sk, skb);
733 static int raw_init(struct sock *sk)
735 struct raw_sock *rp = raw_sk(sk);
737 if (inet_sk(sk)->inet_num == IPPROTO_ICMP)
738 memset(&rp->filter, 0, sizeof(rp->filter));
742 static int raw_seticmpfilter(struct sock *sk, char __user *optval, int optlen)
744 if (optlen > sizeof(struct icmp_filter))
745 optlen = sizeof(struct icmp_filter);
746 if (copy_from_user(&raw_sk(sk)->filter, optval, optlen))
751 static int raw_geticmpfilter(struct sock *sk, char __user *optval, int __user *optlen)
753 int len, ret = -EFAULT;
755 if (get_user(len, optlen))
760 if (len > sizeof(struct icmp_filter))
761 len = sizeof(struct icmp_filter);
763 if (put_user(len, optlen) ||
764 copy_to_user(optval, &raw_sk(sk)->filter, len))
770 static int do_raw_setsockopt(struct sock *sk, int level, int optname,
771 char __user *optval, unsigned int optlen)
773 if (optname == ICMP_FILTER) {
774 if (inet_sk(sk)->inet_num != IPPROTO_ICMP)
777 return raw_seticmpfilter(sk, optval, optlen);
782 static int raw_setsockopt(struct sock *sk, int level, int optname,
783 char __user *optval, unsigned int optlen)
785 if (level != SOL_RAW)
786 return ip_setsockopt(sk, level, optname, optval, optlen);
787 return do_raw_setsockopt(sk, level, optname, optval, optlen);
791 static int compat_raw_setsockopt(struct sock *sk, int level, int optname,
792 char __user *optval, unsigned int optlen)
794 if (level != SOL_RAW)
795 return compat_ip_setsockopt(sk, level, optname, optval, optlen);
796 return do_raw_setsockopt(sk, level, optname, optval, optlen);
800 static int do_raw_getsockopt(struct sock *sk, int level, int optname,
801 char __user *optval, int __user *optlen)
803 if (optname == ICMP_FILTER) {
804 if (inet_sk(sk)->inet_num != IPPROTO_ICMP)
807 return raw_geticmpfilter(sk, optval, optlen);
812 static int raw_getsockopt(struct sock *sk, int level, int optname,
813 char __user *optval, int __user *optlen)
815 if (level != SOL_RAW)
816 return ip_getsockopt(sk, level, optname, optval, optlen);
817 return do_raw_getsockopt(sk, level, optname, optval, optlen);
821 static int compat_raw_getsockopt(struct sock *sk, int level, int optname,
822 char __user *optval, int __user *optlen)
824 if (level != SOL_RAW)
825 return compat_ip_getsockopt(sk, level, optname, optval, optlen);
826 return do_raw_getsockopt(sk, level, optname, optval, optlen);
830 static int raw_ioctl(struct sock *sk, int cmd, unsigned long arg)
834 int amount = sk_wmem_alloc_get(sk);
836 return put_user(amount, (int __user *)arg);
842 spin_lock_bh(&sk->sk_receive_queue.lock);
843 skb = skb_peek(&sk->sk_receive_queue);
846 spin_unlock_bh(&sk->sk_receive_queue.lock);
847 return put_user(amount, (int __user *)arg);
851 #ifdef CONFIG_IP_MROUTE
852 return ipmr_ioctl(sk, cmd, (void __user *)arg);
860 static int compat_raw_ioctl(struct sock *sk, unsigned int cmd, unsigned long arg)
867 #ifdef CONFIG_IP_MROUTE
868 return ipmr_compat_ioctl(sk, cmd, compat_ptr(arg));
876 struct proto raw_prot = {
878 .owner = THIS_MODULE,
880 .destroy = raw_destroy,
881 .connect = ip4_datagram_connect,
882 .disconnect = udp_disconnect,
885 .setsockopt = raw_setsockopt,
886 .getsockopt = raw_getsockopt,
887 .sendmsg = raw_sendmsg,
888 .recvmsg = raw_recvmsg,
890 .backlog_rcv = raw_rcv_skb,
892 .unhash = raw_unhash_sk,
893 .obj_size = sizeof(struct raw_sock),
894 .h.raw_hash = &raw_v4_hashinfo,
896 .compat_setsockopt = compat_raw_setsockopt,
897 .compat_getsockopt = compat_raw_getsockopt,
898 .compat_ioctl = compat_raw_ioctl,
902 #ifdef CONFIG_PROC_FS
903 static struct sock *raw_get_first(struct seq_file *seq)
906 struct raw_iter_state *state = raw_seq_private(seq);
908 for (state->bucket = 0; state->bucket < RAW_HTABLE_SIZE;
910 struct hlist_node *node;
912 sk_for_each(sk, node, &state->h->ht[state->bucket])
913 if (sock_net(sk) == seq_file_net(seq))
921 static struct sock *raw_get_next(struct seq_file *seq, struct sock *sk)
923 struct raw_iter_state *state = raw_seq_private(seq);
929 } while (sk && sock_net(sk) != seq_file_net(seq));
931 if (!sk && ++state->bucket < RAW_HTABLE_SIZE) {
932 sk = sk_head(&state->h->ht[state->bucket]);
938 static struct sock *raw_get_idx(struct seq_file *seq, loff_t pos)
940 struct sock *sk = raw_get_first(seq);
943 while (pos && (sk = raw_get_next(seq, sk)) != NULL)
945 return pos ? NULL : sk;
948 void *raw_seq_start(struct seq_file *seq, loff_t *pos)
950 struct raw_iter_state *state = raw_seq_private(seq);
952 read_lock(&state->h->lock);
953 return *pos ? raw_get_idx(seq, *pos - 1) : SEQ_START_TOKEN;
955 EXPORT_SYMBOL_GPL(raw_seq_start);
957 void *raw_seq_next(struct seq_file *seq, void *v, loff_t *pos)
961 if (v == SEQ_START_TOKEN)
962 sk = raw_get_first(seq);
964 sk = raw_get_next(seq, v);
968 EXPORT_SYMBOL_GPL(raw_seq_next);
970 void raw_seq_stop(struct seq_file *seq, void *v)
972 struct raw_iter_state *state = raw_seq_private(seq);
974 read_unlock(&state->h->lock);
976 EXPORT_SYMBOL_GPL(raw_seq_stop);
978 static void raw_sock_seq_show(struct seq_file *seq, struct sock *sp, int i)
980 struct inet_sock *inet = inet_sk(sp);
981 __be32 dest = inet->inet_daddr,
982 src = inet->inet_rcv_saddr;
984 srcp = inet->inet_num;
986 seq_printf(seq, "%4d: %08X:%04X %08X:%04X"
987 " %02X %08X:%08X %02X:%08lX %08X %5d %8d %lu %d %pK %d\n",
988 i, src, srcp, dest, destp, sp->sk_state,
989 sk_wmem_alloc_get(sp),
990 sk_rmem_alloc_get(sp),
991 0, 0L, 0, sock_i_uid(sp), 0, sock_i_ino(sp),
992 atomic_read(&sp->sk_refcnt), sp, atomic_read(&sp->sk_drops));
995 static int raw_seq_show(struct seq_file *seq, void *v)
997 if (v == SEQ_START_TOKEN)
998 seq_printf(seq, " sl local_address rem_address st tx_queue "
999 "rx_queue tr tm->when retrnsmt uid timeout "
1000 "inode ref pointer drops\n");
1002 raw_sock_seq_show(seq, v, raw_seq_private(seq)->bucket);
1006 static const struct seq_operations raw_seq_ops = {
1007 .start = raw_seq_start,
1008 .next = raw_seq_next,
1009 .stop = raw_seq_stop,
1010 .show = raw_seq_show,
1013 int raw_seq_open(struct inode *ino, struct file *file,
1014 struct raw_hashinfo *h, const struct seq_operations *ops)
1017 struct raw_iter_state *i;
1019 err = seq_open_net(ino, file, ops, sizeof(struct raw_iter_state));
1023 i = raw_seq_private((struct seq_file *)file->private_data);
1027 EXPORT_SYMBOL_GPL(raw_seq_open);
1029 static int raw_v4_seq_open(struct inode *inode, struct file *file)
1031 return raw_seq_open(inode, file, &raw_v4_hashinfo, &raw_seq_ops);
1034 static const struct file_operations raw_seq_fops = {
1035 .owner = THIS_MODULE,
1036 .open = raw_v4_seq_open,
1038 .llseek = seq_lseek,
1039 .release = seq_release_net,
1042 static __net_init int raw_init_net(struct net *net)
1044 if (!proc_net_fops_create(net, "raw", S_IRUGO, &raw_seq_fops))
1050 static __net_exit void raw_exit_net(struct net *net)
1052 proc_net_remove(net, "raw");
1055 static __net_initdata struct pernet_operations raw_net_ops = {
1056 .init = raw_init_net,
1057 .exit = raw_exit_net,
1060 int __init raw_proc_init(void)
1062 return register_pernet_subsys(&raw_net_ops);
1065 void __init raw_proc_exit(void)
1067 unregister_pernet_subsys(&raw_net_ops);
1069 #endif /* CONFIG_PROC_FS */