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 <linux/igmp.h>
62 #include <net/net_namespace.h>
66 #include <linux/net.h>
72 #include <net/tcp_states.h>
73 #include <net/inet_common.h>
74 #include <net/checksum.h>
76 #include <linux/rtnetlink.h>
77 #include <linux/proc_fs.h>
78 #include <linux/seq_file.h>
79 #include <linux/netfilter.h>
80 #include <linux/netfilter_ipv4.h>
81 #include <linux/compat.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)->inet_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 sk_for_each_from(sk) {
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 int icmp_filter(const struct sock *sk, const struct sk_buff *skb)
136 const struct icmphdr *hdr;
138 hdr = skb_header_pointer(skb, skb_transport_offset(skb),
139 sizeof(_hdr), &_hdr);
143 if (hdr->type < 32) {
144 __u32 data = raw_sk(sk)->filter.data;
146 return ((1U << hdr->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, const 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 ip_mc_sf_allow(sk, iph->daddr, iph->saddr,
180 skb->dev->ifindex)) {
181 struct sk_buff *clone = skb_clone(skb, GFP_ATOMIC);
183 /* Not releasing hash table! */
187 sk = __raw_v4_lookup(net, sk_next(sk), iph->protocol,
188 iph->saddr, iph->daddr,
192 read_unlock(&raw_v4_hashinfo.lock);
196 int raw_local_deliver(struct sk_buff *skb, int protocol)
201 hash = protocol & (RAW_HTABLE_SIZE - 1);
202 raw_sk = sk_head(&raw_v4_hashinfo.ht[hash]);
204 /* If there maybe a raw socket we must check - if not we
207 if (raw_sk && !raw_v4_input(skb, ip_hdr(skb), hash))
210 return raw_sk != NULL;
214 static void raw_err(struct sock *sk, struct sk_buff *skb, u32 info)
216 struct inet_sock *inet = inet_sk(sk);
217 const int type = icmp_hdr(skb)->type;
218 const int code = icmp_hdr(skb)->code;
222 if (type == ICMP_DEST_UNREACH && code == ICMP_FRAG_NEEDED)
223 ipv4_sk_update_pmtu(skb, sk, info);
224 else if (type == ICMP_REDIRECT) {
225 ipv4_sk_redirect(skb, sk);
229 /* Report error on raw socket, if:
230 1. User requested ip_recverr.
231 2. Socket is connected (otherwise the error indication
232 is useless without ip_recverr and error is hard.
234 if (!inet->recverr && sk->sk_state != TCP_ESTABLISHED)
239 case ICMP_TIME_EXCEEDED:
242 case ICMP_SOURCE_QUENCH:
244 case ICMP_PARAMETERPROB:
248 case ICMP_DEST_UNREACH:
250 if (code > NR_ICMP_UNREACH)
252 err = icmp_err_convert[code].errno;
253 harderr = icmp_err_convert[code].fatal;
254 if (code == ICMP_FRAG_NEEDED) {
255 harderr = inet->pmtudisc != IP_PMTUDISC_DONT;
261 const struct iphdr *iph = (const struct iphdr *)skb->data;
262 u8 *payload = skb->data + (iph->ihl << 2);
266 ip_icmp_error(sk, skb, err, 0, info, payload);
269 if (inet->recverr || harderr) {
271 sk->sk_error_report(sk);
275 void raw_icmp_error(struct sk_buff *skb, int protocol, u32 info)
279 const struct iphdr *iph;
282 hash = protocol & (RAW_HTABLE_SIZE - 1);
284 read_lock(&raw_v4_hashinfo.lock);
285 raw_sk = sk_head(&raw_v4_hashinfo.ht[hash]);
286 if (raw_sk != NULL) {
287 iph = (const struct iphdr *)skb->data;
288 net = dev_net(skb->dev);
290 while ((raw_sk = __raw_v4_lookup(net, raw_sk, protocol,
291 iph->daddr, iph->saddr,
292 skb->dev->ifindex)) != NULL) {
293 raw_err(raw_sk, skb, info);
294 raw_sk = sk_next(raw_sk);
295 iph = (const struct iphdr *)skb->data;
298 read_unlock(&raw_v4_hashinfo.lock);
301 static int raw_rcv_skb(struct sock *sk, struct sk_buff *skb)
303 /* Charge it to the socket. */
305 ipv4_pktinfo_prepare(sk, skb);
306 if (sock_queue_rcv_skb(sk, skb) < 0) {
311 return NET_RX_SUCCESS;
314 int raw_rcv(struct sock *sk, struct sk_buff *skb)
316 if (!xfrm4_policy_check(sk, XFRM_POLICY_IN, skb)) {
317 atomic_inc(&sk->sk_drops);
323 skb_push(skb, skb->data - skb_network_header(skb));
325 raw_rcv_skb(sk, skb);
329 static int raw_send_hdrinc(struct sock *sk, struct flowi4 *fl4,
330 void *from, size_t length,
334 struct inet_sock *inet = inet_sk(sk);
335 struct net *net = sock_net(sk);
340 struct rtable *rt = *rtp;
343 if (length > rt->dst.dev->mtu) {
344 ip_local_error(sk, EMSGSIZE, fl4->daddr, inet->inet_dport,
351 hlen = LL_RESERVED_SPACE(rt->dst.dev);
352 tlen = rt->dst.dev->needed_tailroom;
353 skb = sock_alloc_send_skb(sk,
354 length + hlen + tlen + 15,
355 flags & MSG_DONTWAIT, &err);
358 skb_reserve(skb, hlen);
360 skb->priority = sk->sk_priority;
361 skb->mark = sk->sk_mark;
362 skb_dst_set(skb, &rt->dst);
365 skb_reset_network_header(skb);
367 skb_put(skb, length);
369 skb->ip_summed = CHECKSUM_NONE;
371 sock_tx_timestamp(sk, &skb_shinfo(skb)->tx_flags);
373 skb->transport_header = skb->network_header;
375 if (memcpy_fromiovecend((void *)iph, from, 0, length))
378 iphlen = iph->ihl * 4;
381 * We don't want to modify the ip header, but we do need to
382 * be sure that it won't cause problems later along the network
383 * stack. Specifically we want to make sure that iph->ihl is a
384 * sane value. If ihl points beyond the length of the buffer passed
385 * in, reject the frame as invalid
391 if (iphlen >= sizeof(*iph)) {
393 iph->saddr = fl4->saddr;
395 iph->tot_len = htons(length);
397 ip_select_ident(skb, NULL);
399 iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
401 if (iph->protocol == IPPROTO_ICMP)
402 icmp_out_count(net, ((struct icmphdr *)
403 skb_transport_header(skb))->type);
405 err = NF_HOOK(NFPROTO_IPV4, NF_INET_LOCAL_OUT, skb, NULL,
406 rt->dst.dev, dst_output);
408 err = net_xmit_errno(err);
417 IP_INC_STATS(net, IPSTATS_MIB_OUTDISCARDS);
418 if (err == -ENOBUFS && !inet->recverr)
423 static int raw_probe_proto_opt(struct flowi4 *fl4, struct msghdr *msg)
426 u8 __user *type = NULL;
427 u8 __user *code = NULL;
434 for (i = 0; i < msg->msg_iovlen; i++) {
435 iov = &msg->msg_iov[i];
439 switch (fl4->flowi4_proto) {
441 /* check if one-byte field is readable or not. */
442 if (iov->iov_base && iov->iov_len < 1)
446 type = iov->iov_base;
447 /* check if code field is readable or not. */
448 if (iov->iov_len > 1)
451 code = iov->iov_base;
454 if (get_user(fl4->fl4_icmp_type, type) ||
455 get_user(fl4->fl4_icmp_code, code))
470 static int raw_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
473 struct inet_sock *inet = inet_sk(sk);
474 struct ipcm_cookie ipc;
475 struct rtable *rt = NULL;
482 struct ip_options_data opt_copy;
493 if (msg->msg_flags & MSG_OOB) /* Mirror BSD error message */
494 goto out; /* compatibility */
497 * Get and verify the address.
500 if (msg->msg_namelen) {
501 DECLARE_SOCKADDR(struct sockaddr_in *, usin, msg->msg_name);
503 if (msg->msg_namelen < sizeof(*usin))
505 if (usin->sin_family != AF_INET) {
506 pr_info_once("%s: %s forgot to set AF_INET. Fix it!\n",
507 __func__, current->comm);
509 if (usin->sin_family)
512 daddr = usin->sin_addr.s_addr;
513 /* ANK: I did not forget to get protocol from port field.
514 * I just do not know, who uses this weirdness.
515 * IP_HDRINCL is much more convenient.
519 if (sk->sk_state != TCP_ESTABLISHED)
521 daddr = inet->inet_daddr;
524 ipc.addr = inet->inet_saddr;
529 ipc.oif = sk->sk_bound_dev_if;
531 if (msg->msg_controllen) {
532 err = ip_cmsg_send(sock_net(sk), msg, &ipc, false);
543 struct ip_options_rcu *inet_opt;
546 inet_opt = rcu_dereference(inet->inet_opt);
548 memcpy(&opt_copy, inet_opt,
549 sizeof(*inet_opt) + inet_opt->opt.optlen);
550 ipc.opt = &opt_copy.opt;
557 /* Linux does not mangle headers on raw sockets,
558 * so that IP options + IP_HDRINCL is non-sense.
562 if (ipc.opt->opt.srr) {
565 daddr = ipc.opt->opt.faddr;
568 tos = get_rtconn_flags(&ipc, sk);
569 if (msg->msg_flags & MSG_DONTROUTE)
572 if (ipv4_is_multicast(daddr)) {
574 ipc.oif = inet->mc_index;
576 saddr = inet->mc_addr;
578 ipc.oif = inet->uc_index;
580 flowi4_init_output(&fl4, ipc.oif, sk->sk_mark, tos,
582 inet->hdrincl ? IPPROTO_RAW : sk->sk_protocol,
583 inet_sk_flowi_flags(sk) |
584 (inet->hdrincl ? FLOWI_FLAG_KNOWN_NH : 0),
587 if (!inet->hdrincl) {
588 err = raw_probe_proto_opt(&fl4, msg);
593 security_sk_classify_flow(sk, flowi4_to_flowi(&fl4));
594 rt = ip_route_output_flow(sock_net(sk), &fl4, sk);
602 if (rt->rt_flags & RTCF_BROADCAST && !sock_flag(sk, SOCK_BROADCAST))
605 if (msg->msg_flags & MSG_CONFIRM)
610 err = raw_send_hdrinc(sk, &fl4, msg->msg_iov, len,
611 &rt, msg->msg_flags);
614 sock_tx_timestamp(sk, &ipc.tx_flags);
617 ipc.addr = fl4.daddr;
619 err = ip_append_data(sk, &fl4, ip_generic_getfrag,
620 msg->msg_iov, len, 0,
621 &ipc, &rt, msg->msg_flags);
623 ip_flush_pending_frames(sk);
624 else if (!(msg->msg_flags & MSG_MORE)) {
625 err = ip_push_pending_frames(sk, &fl4);
626 if (err == -ENOBUFS && !inet->recverr)
642 dst_confirm(&rt->dst);
643 if (!(msg->msg_flags & MSG_PROBE) || len)
644 goto back_from_confirm;
649 static void raw_close(struct sock *sk, long timeout)
652 * Raw sockets may have direct kernel references. Kill them.
654 ip_ra_control(sk, 0, NULL);
656 sk_common_release(sk);
659 static void raw_destroy(struct sock *sk)
662 ip_flush_pending_frames(sk);
666 /* This gets rid of all the nasties in af_inet. -DaveM */
667 static int raw_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
669 struct inet_sock *inet = inet_sk(sk);
670 struct sockaddr_in *addr = (struct sockaddr_in *) uaddr;
674 if (sk->sk_state != TCP_CLOSE || addr_len < sizeof(struct sockaddr_in))
676 chk_addr_ret = inet_addr_type(sock_net(sk), addr->sin_addr.s_addr);
677 ret = -EADDRNOTAVAIL;
678 if (addr->sin_addr.s_addr && chk_addr_ret != RTN_LOCAL &&
679 chk_addr_ret != RTN_MULTICAST && chk_addr_ret != RTN_BROADCAST)
681 inet->inet_rcv_saddr = inet->inet_saddr = addr->sin_addr.s_addr;
682 if (chk_addr_ret == RTN_MULTICAST || chk_addr_ret == RTN_BROADCAST)
683 inet->inet_saddr = 0; /* Use device */
690 * This should be easy, if there is something there
691 * we return it, otherwise we block.
694 static int raw_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
695 size_t len, int noblock, int flags, int *addr_len)
697 struct inet_sock *inet = inet_sk(sk);
699 int err = -EOPNOTSUPP;
700 DECLARE_SOCKADDR(struct sockaddr_in *, sin, msg->msg_name);
706 if (flags & MSG_ERRQUEUE) {
707 err = ip_recv_error(sk, msg, len, addr_len);
711 skb = skb_recv_datagram(sk, flags, noblock, &err);
717 msg->msg_flags |= MSG_TRUNC;
721 err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
725 sock_recv_ts_and_drops(msg, sk, skb);
727 /* Copy the address. */
729 sin->sin_family = AF_INET;
730 sin->sin_addr.s_addr = ip_hdr(skb)->saddr;
732 memset(&sin->sin_zero, 0, sizeof(sin->sin_zero));
733 *addr_len = sizeof(*sin);
735 if (inet->cmsg_flags)
736 ip_cmsg_recv(msg, skb);
737 if (flags & MSG_TRUNC)
740 skb_free_datagram(sk, skb);
747 static int raw_init(struct sock *sk)
749 struct raw_sock *rp = raw_sk(sk);
751 if (inet_sk(sk)->inet_num == IPPROTO_ICMP)
752 memset(&rp->filter, 0, sizeof(rp->filter));
756 static int raw_seticmpfilter(struct sock *sk, char __user *optval, int optlen)
758 if (optlen > sizeof(struct icmp_filter))
759 optlen = sizeof(struct icmp_filter);
760 if (copy_from_user(&raw_sk(sk)->filter, optval, optlen))
765 static int raw_geticmpfilter(struct sock *sk, char __user *optval, int __user *optlen)
767 int len, ret = -EFAULT;
769 if (get_user(len, optlen))
774 if (len > sizeof(struct icmp_filter))
775 len = sizeof(struct icmp_filter);
777 if (put_user(len, optlen) ||
778 copy_to_user(optval, &raw_sk(sk)->filter, len))
784 static int do_raw_setsockopt(struct sock *sk, int level, int optname,
785 char __user *optval, unsigned int optlen)
787 if (optname == ICMP_FILTER) {
788 if (inet_sk(sk)->inet_num != IPPROTO_ICMP)
791 return raw_seticmpfilter(sk, optval, optlen);
796 static int raw_setsockopt(struct sock *sk, int level, int optname,
797 char __user *optval, unsigned int optlen)
799 if (level != SOL_RAW)
800 return ip_setsockopt(sk, level, optname, optval, optlen);
801 return do_raw_setsockopt(sk, level, optname, optval, optlen);
805 static int compat_raw_setsockopt(struct sock *sk, int level, int optname,
806 char __user *optval, unsigned int optlen)
808 if (level != SOL_RAW)
809 return compat_ip_setsockopt(sk, level, optname, optval, optlen);
810 return do_raw_setsockopt(sk, level, optname, optval, optlen);
814 static int do_raw_getsockopt(struct sock *sk, int level, int optname,
815 char __user *optval, int __user *optlen)
817 if (optname == ICMP_FILTER) {
818 if (inet_sk(sk)->inet_num != IPPROTO_ICMP)
821 return raw_geticmpfilter(sk, optval, optlen);
826 static int raw_getsockopt(struct sock *sk, int level, int optname,
827 char __user *optval, int __user *optlen)
829 if (level != SOL_RAW)
830 return ip_getsockopt(sk, level, optname, optval, optlen);
831 return do_raw_getsockopt(sk, level, optname, optval, optlen);
835 static int compat_raw_getsockopt(struct sock *sk, int level, int optname,
836 char __user *optval, int __user *optlen)
838 if (level != SOL_RAW)
839 return compat_ip_getsockopt(sk, level, optname, optval, optlen);
840 return do_raw_getsockopt(sk, level, optname, optval, optlen);
844 static int raw_ioctl(struct sock *sk, int cmd, unsigned long arg)
848 int amount = sk_wmem_alloc_get(sk);
850 return put_user(amount, (int __user *)arg);
856 spin_lock_bh(&sk->sk_receive_queue.lock);
857 skb = skb_peek(&sk->sk_receive_queue);
860 spin_unlock_bh(&sk->sk_receive_queue.lock);
861 return put_user(amount, (int __user *)arg);
865 #ifdef CONFIG_IP_MROUTE
866 return ipmr_ioctl(sk, cmd, (void __user *)arg);
874 static int compat_raw_ioctl(struct sock *sk, unsigned int cmd, unsigned long arg)
881 #ifdef CONFIG_IP_MROUTE
882 return ipmr_compat_ioctl(sk, cmd, compat_ptr(arg));
890 struct proto raw_prot = {
892 .owner = THIS_MODULE,
894 .destroy = raw_destroy,
895 .connect = ip4_datagram_connect,
896 .disconnect = udp_disconnect,
899 .setsockopt = raw_setsockopt,
900 .getsockopt = raw_getsockopt,
901 .sendmsg = raw_sendmsg,
902 .recvmsg = raw_recvmsg,
904 .backlog_rcv = raw_rcv_skb,
905 .release_cb = ip4_datagram_release_cb,
907 .unhash = raw_unhash_sk,
908 .obj_size = sizeof(struct raw_sock),
909 .h.raw_hash = &raw_v4_hashinfo,
911 .compat_setsockopt = compat_raw_setsockopt,
912 .compat_getsockopt = compat_raw_getsockopt,
913 .compat_ioctl = compat_raw_ioctl,
917 #ifdef CONFIG_PROC_FS
918 static struct sock *raw_get_first(struct seq_file *seq)
921 struct raw_iter_state *state = raw_seq_private(seq);
923 for (state->bucket = 0; state->bucket < RAW_HTABLE_SIZE;
925 sk_for_each(sk, &state->h->ht[state->bucket])
926 if (sock_net(sk) == seq_file_net(seq))
934 static struct sock *raw_get_next(struct seq_file *seq, struct sock *sk)
936 struct raw_iter_state *state = raw_seq_private(seq);
942 } while (sk && sock_net(sk) != seq_file_net(seq));
944 if (!sk && ++state->bucket < RAW_HTABLE_SIZE) {
945 sk = sk_head(&state->h->ht[state->bucket]);
951 static struct sock *raw_get_idx(struct seq_file *seq, loff_t pos)
953 struct sock *sk = raw_get_first(seq);
956 while (pos && (sk = raw_get_next(seq, sk)) != NULL)
958 return pos ? NULL : sk;
961 void *raw_seq_start(struct seq_file *seq, loff_t *pos)
963 struct raw_iter_state *state = raw_seq_private(seq);
965 read_lock(&state->h->lock);
966 return *pos ? raw_get_idx(seq, *pos - 1) : SEQ_START_TOKEN;
968 EXPORT_SYMBOL_GPL(raw_seq_start);
970 void *raw_seq_next(struct seq_file *seq, void *v, loff_t *pos)
974 if (v == SEQ_START_TOKEN)
975 sk = raw_get_first(seq);
977 sk = raw_get_next(seq, v);
981 EXPORT_SYMBOL_GPL(raw_seq_next);
983 void raw_seq_stop(struct seq_file *seq, void *v)
985 struct raw_iter_state *state = raw_seq_private(seq);
987 read_unlock(&state->h->lock);
989 EXPORT_SYMBOL_GPL(raw_seq_stop);
991 static void raw_sock_seq_show(struct seq_file *seq, struct sock *sp, int i)
993 struct inet_sock *inet = inet_sk(sp);
994 __be32 dest = inet->inet_daddr,
995 src = inet->inet_rcv_saddr;
997 srcp = inet->inet_num;
999 seq_printf(seq, "%4d: %08X:%04X %08X:%04X"
1000 " %02X %08X:%08X %02X:%08lX %08X %5u %8d %lu %d %pK %d\n",
1001 i, src, srcp, dest, destp, sp->sk_state,
1002 sk_wmem_alloc_get(sp),
1003 sk_rmem_alloc_get(sp),
1005 from_kuid_munged(seq_user_ns(seq), sock_i_uid(sp)),
1007 atomic_read(&sp->sk_refcnt), sp, atomic_read(&sp->sk_drops));
1010 static int raw_seq_show(struct seq_file *seq, void *v)
1012 if (v == SEQ_START_TOKEN)
1013 seq_printf(seq, " sl local_address rem_address st tx_queue "
1014 "rx_queue tr tm->when retrnsmt uid timeout "
1015 "inode ref pointer drops\n");
1017 raw_sock_seq_show(seq, v, raw_seq_private(seq)->bucket);
1021 static const struct seq_operations raw_seq_ops = {
1022 .start = raw_seq_start,
1023 .next = raw_seq_next,
1024 .stop = raw_seq_stop,
1025 .show = raw_seq_show,
1028 int raw_seq_open(struct inode *ino, struct file *file,
1029 struct raw_hashinfo *h, const struct seq_operations *ops)
1032 struct raw_iter_state *i;
1034 err = seq_open_net(ino, file, ops, sizeof(struct raw_iter_state));
1038 i = raw_seq_private((struct seq_file *)file->private_data);
1042 EXPORT_SYMBOL_GPL(raw_seq_open);
1044 static int raw_v4_seq_open(struct inode *inode, struct file *file)
1046 return raw_seq_open(inode, file, &raw_v4_hashinfo, &raw_seq_ops);
1049 static const struct file_operations raw_seq_fops = {
1050 .owner = THIS_MODULE,
1051 .open = raw_v4_seq_open,
1053 .llseek = seq_lseek,
1054 .release = seq_release_net,
1057 static __net_init int raw_init_net(struct net *net)
1059 if (!proc_create("raw", S_IRUGO, net->proc_net, &raw_seq_fops))
1065 static __net_exit void raw_exit_net(struct net *net)
1067 remove_proc_entry("raw", net->proc_net);
1070 static __net_initdata struct pernet_operations raw_net_ops = {
1071 .init = raw_init_net,
1072 .exit = raw_exit_net,
1075 int __init raw_proc_init(void)
1077 return register_pernet_subsys(&raw_net_ops);
1080 void __init raw_proc_exit(void)
1082 unregister_pernet_subsys(&raw_net_ops);
1084 #endif /* CONFIG_PROC_FS */