3 * Linux INET6 implementation
6 * Pedro Roque <roque@di.fc.ul.pt>
8 * Adapted from linux/net/ipv4/raw.c
10 * $Id: raw.c,v 1.51 2002/02/01 22:01:04 davem Exp $
13 * Hideaki YOSHIFUJI : sin6_scope_id support
14 * YOSHIFUJI,H.@USAGI : raw checksum (RFC2292(bis) compliance)
15 * Kazunori MIYAZAWA @USAGI: change process style to use ip6_append_data
17 * This program is free software; you can redistribute it and/or
18 * modify it under the terms of the GNU General Public License
19 * as published by the Free Software Foundation; either version
20 * 2 of the License, or (at your option) any later version.
23 #include <linux/errno.h>
24 #include <linux/types.h>
25 #include <linux/socket.h>
26 #include <linux/sockios.h>
27 #include <linux/sched.h>
28 #include <linux/net.h>
29 #include <linux/in6.h>
30 #include <linux/netdevice.h>
31 #include <linux/if_arp.h>
32 #include <linux/icmpv6.h>
33 #include <linux/netfilter.h>
34 #include <linux/netfilter_ipv6.h>
35 #include <asm/uaccess.h>
36 #include <asm/ioctls.h>
44 #include <net/ndisc.h>
45 #include <net/protocol.h>
46 #include <net/ip6_route.h>
47 #include <net/ip6_checksum.h>
48 #include <net/addrconf.h>
49 #include <net/transp_v6.h>
51 #include <net/inet_common.h>
52 #include <net/tcp_states.h>
54 #include <net/rawv6.h>
57 #include <linux/proc_fs.h>
58 #include <linux/seq_file.h>
60 struct hlist_head raw_v6_htable
[RAWV6_HTABLE_SIZE
];
61 DEFINE_RWLOCK(raw_v6_lock
);
63 static void raw_v6_hash(struct sock
*sk
)
65 struct hlist_head
*list
= &raw_v6_htable
[inet_sk(sk
)->num
&
66 (RAWV6_HTABLE_SIZE
- 1)];
68 write_lock_bh(&raw_v6_lock
);
69 sk_add_node(sk
, list
);
70 sock_prot_inc_use(sk
->sk_prot
);
71 write_unlock_bh(&raw_v6_lock
);
74 static void raw_v6_unhash(struct sock
*sk
)
76 write_lock_bh(&raw_v6_lock
);
77 if (sk_del_node_init(sk
))
78 sock_prot_dec_use(sk
->sk_prot
);
79 write_unlock_bh(&raw_v6_lock
);
83 /* Grumble... icmp and ip_input want to get at this... */
84 struct sock
*__raw_v6_lookup(struct sock
*sk
, unsigned short num
,
85 struct in6_addr
*loc_addr
, struct in6_addr
*rmt_addr
,
88 struct hlist_node
*node
;
89 int is_multicast
= ipv6_addr_is_multicast(loc_addr
);
91 sk_for_each_from(sk
, node
)
92 if (inet_sk(sk
)->num
== num
) {
93 struct ipv6_pinfo
*np
= inet6_sk(sk
);
95 if (!ipv6_addr_any(&np
->daddr
) &&
96 !ipv6_addr_equal(&np
->daddr
, rmt_addr
))
99 if (sk
->sk_bound_dev_if
&& sk
->sk_bound_dev_if
!= dif
)
102 if (!ipv6_addr_any(&np
->rcv_saddr
)) {
103 if (ipv6_addr_equal(&np
->rcv_saddr
, loc_addr
))
106 inet6_mc_check(sk
, loc_addr
, rmt_addr
))
121 static __inline__
int icmpv6_filter(struct sock
*sk
, struct sk_buff
*skb
)
123 struct icmp6hdr
*icmph
;
124 struct raw6_sock
*rp
= raw6_sk(sk
);
126 if (pskb_may_pull(skb
, sizeof(struct icmp6hdr
))) {
127 __u32
*data
= &rp
->filter
.data
[0];
130 icmph
= (struct icmp6hdr
*) skb
->data
;
131 bit_nr
= icmph
->icmp6_type
;
133 return (data
[bit_nr
>> 5] & (1 << (bit_nr
& 31))) != 0;
139 * demultiplex raw sockets.
140 * (should consider queueing the skb in the sock receive_queue
141 * without calling rawv6.c)
143 * Caller owns SKB so we must make clones.
145 int ipv6_raw_deliver(struct sk_buff
*skb
, int nexthdr
)
147 struct in6_addr
*saddr
;
148 struct in6_addr
*daddr
;
153 saddr
= &skb
->nh
.ipv6h
->saddr
;
156 hash
= nexthdr
& (MAX_INET_PROTOS
- 1);
158 read_lock(&raw_v6_lock
);
159 sk
= sk_head(&raw_v6_htable
[hash
]);
162 * The first socket found will be delivered after
163 * delivery to transport protocols.
169 sk
= __raw_v6_lookup(sk
, nexthdr
, daddr
, saddr
, skb
->dev
->ifindex
);
173 if (nexthdr
!= IPPROTO_ICMPV6
|| !icmpv6_filter(sk
, skb
)) {
174 struct sk_buff
*clone
= skb_clone(skb
, GFP_ATOMIC
);
176 /* Not releasing hash table! */
178 rawv6_rcv(sk
, clone
);
180 sk
= __raw_v6_lookup(sk_next(sk
), nexthdr
, daddr
, saddr
,
184 read_unlock(&raw_v6_lock
);
188 /* This cleans up af_inet6 a bit. -DaveM */
189 static int rawv6_bind(struct sock
*sk
, struct sockaddr
*uaddr
, int addr_len
)
191 struct inet_sock
*inet
= inet_sk(sk
);
192 struct ipv6_pinfo
*np
= inet6_sk(sk
);
193 struct sockaddr_in6
*addr
= (struct sockaddr_in6
*) uaddr
;
198 if (addr_len
< SIN6_LEN_RFC2133
)
200 addr_type
= ipv6_addr_type(&addr
->sin6_addr
);
202 /* Raw sockets are IPv6 only */
203 if (addr_type
== IPV6_ADDR_MAPPED
)
204 return(-EADDRNOTAVAIL
);
209 if (sk
->sk_state
!= TCP_CLOSE
)
212 /* Check if the address belongs to the host. */
213 if (addr_type
!= IPV6_ADDR_ANY
) {
214 struct net_device
*dev
= NULL
;
216 if (addr_type
& IPV6_ADDR_LINKLOCAL
) {
217 if (addr_len
>= sizeof(struct sockaddr_in6
) &&
218 addr
->sin6_scope_id
) {
219 /* Override any existing binding, if another
220 * one is supplied by user.
222 sk
->sk_bound_dev_if
= addr
->sin6_scope_id
;
225 /* Binding to link-local address requires an interface */
226 if (!sk
->sk_bound_dev_if
)
229 dev
= dev_get_by_index(sk
->sk_bound_dev_if
);
236 /* ipv4 addr of the socket is invalid. Only the
237 * unspecified and mapped address have a v4 equivalent.
239 v4addr
= LOOPBACK4_IPV6
;
240 if (!(addr_type
& IPV6_ADDR_MULTICAST
)) {
241 err
= -EADDRNOTAVAIL
;
242 if (!ipv6_chk_addr(&addr
->sin6_addr
, dev
, 0)) {
252 inet
->rcv_saddr
= inet
->saddr
= v4addr
;
253 ipv6_addr_copy(&np
->rcv_saddr
, &addr
->sin6_addr
);
254 if (!(addr_type
& IPV6_ADDR_MULTICAST
))
255 ipv6_addr_copy(&np
->saddr
, &addr
->sin6_addr
);
262 void rawv6_err(struct sock
*sk
, struct sk_buff
*skb
,
263 struct inet6_skb_parm
*opt
,
264 int type
, int code
, int offset
, u32 info
)
266 struct inet_sock
*inet
= inet_sk(sk
);
267 struct ipv6_pinfo
*np
= inet6_sk(sk
);
271 /* Report error on raw socket, if:
272 1. User requested recverr.
273 2. Socket is connected (otherwise the error indication
274 is useless without recverr and error is hard.
276 if (!np
->recverr
&& sk
->sk_state
!= TCP_ESTABLISHED
)
279 harderr
= icmpv6_err_convert(type
, code
, &err
);
280 if (type
== ICMPV6_PKT_TOOBIG
)
281 harderr
= (np
->pmtudisc
== IPV6_PMTUDISC_DO
);
284 u8
*payload
= skb
->data
;
287 ipv6_icmp_error(sk
, skb
, err
, 0, ntohl(info
), payload
);
290 if (np
->recverr
|| harderr
) {
292 sk
->sk_error_report(sk
);
296 static inline int rawv6_rcv_skb(struct sock
* sk
, struct sk_buff
* skb
)
298 if ((raw6_sk(sk
)->checksum
|| sk
->sk_filter
) &&
299 skb
->ip_summed
!= CHECKSUM_UNNECESSARY
) {
300 if ((unsigned short)csum_fold(skb_checksum(skb
, 0, skb
->len
, skb
->csum
))) {
301 /* FIXME: increment a raw6 drops counter here */
305 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
308 /* Charge it to the socket. */
309 if (sock_queue_rcv_skb(sk
,skb
)<0) {
310 /* FIXME: increment a raw6 drops counter here */
319 * This is next to useless...
320 * if we demultiplex in network layer we don't need the extra call
321 * just to queue the skb...
322 * maybe we could have the network decide upon a hint if it
323 * should call raw_rcv for demultiplexing
325 int rawv6_rcv(struct sock
*sk
, struct sk_buff
*skb
)
327 struct inet_sock
*inet
= inet_sk(sk
);
328 struct raw6_sock
*rp
= raw6_sk(sk
);
330 if (!xfrm6_policy_check(sk
, XFRM_POLICY_IN
, skb
)) {
336 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
338 if (skb
->ip_summed
!= CHECKSUM_UNNECESSARY
) {
339 if (skb
->ip_summed
== CHECKSUM_HW
) {
340 skb_postpull_rcsum(skb
, skb
->nh
.raw
,
341 skb
->h
.raw
- skb
->nh
.raw
);
342 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
343 if (csum_ipv6_magic(&skb
->nh
.ipv6h
->saddr
,
344 &skb
->nh
.ipv6h
->daddr
,
345 skb
->len
, inet
->num
, skb
->csum
)) {
347 printk(KERN_DEBUG
"raw v6 hw csum failure.\n"));
348 skb
->ip_summed
= CHECKSUM_NONE
;
351 if (skb
->ip_summed
== CHECKSUM_NONE
)
352 skb
->csum
= ~csum_ipv6_magic(&skb
->nh
.ipv6h
->saddr
,
353 &skb
->nh
.ipv6h
->daddr
,
354 skb
->len
, inet
->num
, 0);
358 if (skb
->ip_summed
!= CHECKSUM_UNNECESSARY
&&
359 (unsigned short)csum_fold(skb_checksum(skb
, 0, skb
->len
, skb
->csum
))) {
360 /* FIXME: increment a raw6 drops counter here */
364 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
367 rawv6_rcv_skb(sk
, skb
);
373 * This should be easy, if there is something there
374 * we return it, otherwise we block.
377 static int rawv6_recvmsg(struct kiocb
*iocb
, struct sock
*sk
,
378 struct msghdr
*msg
, size_t len
,
379 int noblock
, int flags
, int *addr_len
)
381 struct ipv6_pinfo
*np
= inet6_sk(sk
);
382 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*)msg
->msg_name
;
391 *addr_len
=sizeof(*sin6
);
393 if (flags
& MSG_ERRQUEUE
)
394 return ipv6_recv_error(sk
, msg
, len
);
396 skb
= skb_recv_datagram(sk
, flags
, noblock
, &err
);
403 msg
->msg_flags
|= MSG_TRUNC
;
406 if (skb
->ip_summed
==CHECKSUM_UNNECESSARY
) {
407 err
= skb_copy_datagram_iovec(skb
, 0, msg
->msg_iov
, copied
);
408 } else if (msg
->msg_flags
&MSG_TRUNC
) {
409 if ((unsigned short)csum_fold(skb_checksum(skb
, 0, skb
->len
, skb
->csum
)))
411 err
= skb_copy_datagram_iovec(skb
, 0, msg
->msg_iov
, copied
);
413 err
= skb_copy_and_csum_datagram_iovec(skb
, 0, msg
->msg_iov
);
420 /* Copy the address. */
422 sin6
->sin6_family
= AF_INET6
;
423 ipv6_addr_copy(&sin6
->sin6_addr
, &skb
->nh
.ipv6h
->saddr
);
424 sin6
->sin6_flowinfo
= 0;
425 sin6
->sin6_scope_id
= 0;
426 if (ipv6_addr_type(&sin6
->sin6_addr
) & IPV6_ADDR_LINKLOCAL
)
427 sin6
->sin6_scope_id
= IP6CB(skb
)->iif
;
430 sock_recv_timestamp(msg
, sk
, skb
);
433 datagram_recv_ctl(sk
, msg
, skb
);
436 if (flags
& MSG_TRUNC
)
440 skb_free_datagram(sk
, skb
);
446 if (flags
&MSG_PEEK
) {
448 spin_lock_bh(&sk
->sk_receive_queue
.lock
);
449 if (skb
== skb_peek(&sk
->sk_receive_queue
)) {
450 __skb_unlink(skb
, &sk
->sk_receive_queue
);
453 spin_unlock_bh(&sk
->sk_receive_queue
.lock
);
458 /* Error for blocking case is chosen to masquerade
459 as some normal condition.
461 err
= (flags
&MSG_DONTWAIT
) ? -EAGAIN
: -EHOSTUNREACH
;
462 /* FIXME: increment a raw6 drops counter here */
466 static int rawv6_push_pending_frames(struct sock
*sk
, struct flowi
*fl
,
467 struct raw6_sock
*rp
)
480 if ((skb
= skb_peek(&sk
->sk_write_queue
)) == NULL
)
484 total_len
= inet_sk(sk
)->cork
.length
- (skb
->nh
.raw
- skb
->data
);
485 if (offset
>= total_len
- 1) {
487 ip6_flush_pending_frames(sk
);
491 /* should be check HW csum miyazawa */
492 if (skb_queue_len(&sk
->sk_write_queue
) == 1) {
494 * Only one fragment on the socket.
496 tmp_csum
= skb
->csum
;
498 struct sk_buff
*csum_skb
= NULL
;
501 skb_queue_walk(&sk
->sk_write_queue
, skb
) {
502 tmp_csum
= csum_add(tmp_csum
, skb
->csum
);
507 len
= skb
->len
- (skb
->h
.raw
- skb
->data
);
519 offset
+= skb
->h
.raw
- skb
->data
;
520 if (skb_copy_bits(skb
, offset
, &csum
, 2))
523 /* in case cksum was not initialized */
525 tmp_csum
= csum_sub(tmp_csum
, csum
);
527 tmp_csum
= csum_ipv6_magic(&fl
->fl6_src
,
529 total_len
, fl
->proto
, tmp_csum
);
535 if (skb_store_bits(skb
, offset
, &csum
, 2))
539 err
= ip6_push_pending_frames(sk
);
544 static int rawv6_send_hdrinc(struct sock
*sk
, void *from
, int length
,
545 struct flowi
*fl
, struct rt6_info
*rt
,
548 struct ipv6_pinfo
*np
= inet6_sk(sk
);
554 if (length
> rt
->u
.dst
.dev
->mtu
) {
555 ipv6_local_error(sk
, EMSGSIZE
, fl
, rt
->u
.dst
.dev
->mtu
);
561 hh_len
= LL_RESERVED_SPACE(rt
->u
.dst
.dev
);
563 skb
= sock_alloc_send_skb(sk
, length
+hh_len
+15,
564 flags
&MSG_DONTWAIT
, &err
);
567 skb_reserve(skb
, hh_len
);
569 skb
->priority
= sk
->sk_priority
;
570 skb
->dst
= dst_clone(&rt
->u
.dst
);
572 skb
->nh
.ipv6h
= iph
= (struct ipv6hdr
*)skb_put(skb
, length
);
574 skb
->ip_summed
= CHECKSUM_NONE
;
576 skb
->h
.raw
= skb
->nh
.raw
;
577 err
= memcpy_fromiovecend((void *)iph
, from
, 0, length
);
581 IP6_INC_STATS(IPSTATS_MIB_OUTREQUESTS
);
582 err
= NF_HOOK(PF_INET6
, NF_IP6_LOCAL_OUT
, skb
, NULL
, rt
->u
.dst
.dev
,
585 err
= np
->recverr
? net_xmit_errno(err
) : 0;
595 IP6_INC_STATS(IPSTATS_MIB_OUTDISCARDS
);
599 static void rawv6_probe_proto_opt(struct flowi
*fl
, struct msghdr
*msg
)
602 u8 __user
*type
= NULL
;
603 u8 __user
*code
= NULL
;
610 for (i
= 0; i
< msg
->msg_iovlen
; i
++) {
611 iov
= &msg
->msg_iov
[i
];
617 /* check if one-byte field is readable or not. */
618 if (iov
->iov_base
&& iov
->iov_len
< 1)
622 type
= iov
->iov_base
;
623 /* check if code field is readable or not. */
624 if (iov
->iov_len
> 1)
627 code
= iov
->iov_base
;
630 get_user(fl
->fl_icmp_type
, type
);
631 __get_user(fl
->fl_icmp_code
, code
);
644 static int rawv6_sendmsg(struct kiocb
*iocb
, struct sock
*sk
,
645 struct msghdr
*msg
, size_t len
)
647 struct ipv6_txoptions opt_space
;
648 struct sockaddr_in6
* sin6
= (struct sockaddr_in6
*) msg
->msg_name
;
649 struct in6_addr
*daddr
, *final_p
= NULL
, final
;
650 struct inet_sock
*inet
= inet_sk(sk
);
651 struct ipv6_pinfo
*np
= inet6_sk(sk
);
652 struct raw6_sock
*rp
= raw6_sk(sk
);
653 struct ipv6_txoptions
*opt
= NULL
;
654 struct ip6_flowlabel
*flowlabel
= NULL
;
655 struct dst_entry
*dst
= NULL
;
657 int addr_len
= msg
->msg_namelen
;
662 /* Rough check on arithmetic overflow,
663 better check is made in ip6_build_xmit
668 /* Mirror BSD error message compatibility */
669 if (msg
->msg_flags
& MSG_OOB
)
673 * Get and verify the address.
675 memset(&fl
, 0, sizeof(fl
));
678 if (addr_len
< SIN6_LEN_RFC2133
)
681 if (sin6
->sin6_family
&& sin6
->sin6_family
!= AF_INET6
)
682 return(-EAFNOSUPPORT
);
684 /* port is the proto value [0..255] carried in nexthdr */
685 proto
= ntohs(sin6
->sin6_port
);
689 else if (proto
!= inet
->num
)
695 daddr
= &sin6
->sin6_addr
;
697 fl
.fl6_flowlabel
= sin6
->sin6_flowinfo
&IPV6_FLOWINFO_MASK
;
698 if (fl
.fl6_flowlabel
&IPV6_FLOWLABEL_MASK
) {
699 flowlabel
= fl6_sock_lookup(sk
, fl
.fl6_flowlabel
);
700 if (flowlabel
== NULL
)
702 daddr
= &flowlabel
->dst
;
707 * Otherwise it will be difficult to maintain
710 if (sk
->sk_state
== TCP_ESTABLISHED
&&
711 ipv6_addr_equal(daddr
, &np
->daddr
))
714 if (addr_len
>= sizeof(struct sockaddr_in6
) &&
715 sin6
->sin6_scope_id
&&
716 ipv6_addr_type(daddr
)&IPV6_ADDR_LINKLOCAL
)
717 fl
.oif
= sin6
->sin6_scope_id
;
719 if (sk
->sk_state
!= TCP_ESTABLISHED
)
720 return -EDESTADDRREQ
;
724 fl
.fl6_flowlabel
= np
->flow_label
;
727 if (ipv6_addr_any(daddr
)) {
729 * unspecified destination address
730 * treated as error... is this correct ?
732 fl6_sock_release(flowlabel
);
737 fl
.oif
= sk
->sk_bound_dev_if
;
739 if (msg
->msg_controllen
) {
741 memset(opt
, 0, sizeof(struct ipv6_txoptions
));
742 opt
->tot_len
= sizeof(struct ipv6_txoptions
);
744 err
= datagram_send_ctl(msg
, &fl
, opt
, &hlimit
);
746 fl6_sock_release(flowlabel
);
749 if ((fl
.fl6_flowlabel
&IPV6_FLOWLABEL_MASK
) && !flowlabel
) {
750 flowlabel
= fl6_sock_lookup(sk
, fl
.fl6_flowlabel
);
751 if (flowlabel
== NULL
)
754 if (!(opt
->opt_nflen
|opt
->opt_flen
))
760 opt
= fl6_merge_options(&opt_space
, flowlabel
, opt
);
763 rawv6_probe_proto_opt(&fl
, msg
);
765 ipv6_addr_copy(&fl
.fl6_dst
, daddr
);
766 if (ipv6_addr_any(&fl
.fl6_src
) && !ipv6_addr_any(&np
->saddr
))
767 ipv6_addr_copy(&fl
.fl6_src
, &np
->saddr
);
769 /* merge ip6_build_xmit from ip6_output */
770 if (opt
&& opt
->srcrt
) {
771 struct rt0_hdr
*rt0
= (struct rt0_hdr
*) opt
->srcrt
;
772 ipv6_addr_copy(&final
, &fl
.fl6_dst
);
773 ipv6_addr_copy(&fl
.fl6_dst
, rt0
->addr
);
777 if (!fl
.oif
&& ipv6_addr_is_multicast(&fl
.fl6_dst
))
778 fl
.oif
= np
->mcast_oif
;
780 err
= ip6_dst_lookup(sk
, &dst
, &fl
);
784 ipv6_addr_copy(&fl
.fl6_dst
, final_p
);
786 if ((err
= xfrm_lookup(&dst
, &fl
, sk
, 0)) < 0) {
792 if (ipv6_addr_is_multicast(&fl
.fl6_dst
))
793 hlimit
= np
->mcast_hops
;
795 hlimit
= np
->hop_limit
;
797 hlimit
= dst_metric(dst
, RTAX_HOPLIMIT
);
799 hlimit
= ipv6_get_hoplimit(dst
->dev
);
802 if (msg
->msg_flags
&MSG_CONFIRM
)
807 err
= rawv6_send_hdrinc(sk
, msg
->msg_iov
, len
, &fl
, (struct rt6_info
*)dst
, msg
->msg_flags
);
810 err
= ip6_append_data(sk
, ip_generic_getfrag
, msg
->msg_iov
, len
, 0,
811 hlimit
, opt
, &fl
, (struct rt6_info
*)dst
, msg
->msg_flags
);
814 ip6_flush_pending_frames(sk
);
815 else if (!(msg
->msg_flags
& MSG_MORE
))
816 err
= rawv6_push_pending_frames(sk
, &fl
, rp
);
819 ip6_dst_store(sk
, dst
,
820 ipv6_addr_equal(&fl
.fl6_dst
, &np
->daddr
) ?
825 fl6_sock_release(flowlabel
);
826 return err
<0?err
:len
;
829 if (!(msg
->msg_flags
& MSG_PROBE
) || len
)
830 goto back_from_confirm
;
835 static int rawv6_seticmpfilter(struct sock
*sk
, int level
, int optname
,
836 char __user
*optval
, int optlen
)
840 if (optlen
> sizeof(struct icmp6_filter
))
841 optlen
= sizeof(struct icmp6_filter
);
842 if (copy_from_user(&raw6_sk(sk
)->filter
, optval
, optlen
))
852 static int rawv6_geticmpfilter(struct sock
*sk
, int level
, int optname
,
853 char __user
*optval
, int __user
*optlen
)
859 if (get_user(len
, optlen
))
863 if (len
> sizeof(struct icmp6_filter
))
864 len
= sizeof(struct icmp6_filter
);
865 if (put_user(len
, optlen
))
867 if (copy_to_user(optval
, &raw6_sk(sk
)->filter
, len
))
878 static int rawv6_setsockopt(struct sock
*sk
, int level
, int optname
,
879 char __user
*optval
, int optlen
)
881 struct raw6_sock
*rp
= raw6_sk(sk
);
889 if (inet_sk(sk
)->num
!= IPPROTO_ICMPV6
)
891 return rawv6_seticmpfilter(sk
, level
, optname
, optval
,
894 if (optname
== IPV6_CHECKSUM
)
897 return ipv6_setsockopt(sk
, level
, optname
, optval
,
901 if (get_user(val
, (int __user
*)optval
))
906 /* You may get strange result with a positive odd offset;
907 RFC2292bis agrees with me. */
908 if (val
> 0 && (val
&1))
921 return(-ENOPROTOOPT
);
925 static int rawv6_getsockopt(struct sock
*sk
, int level
, int optname
,
926 char __user
*optval
, int __user
*optlen
)
928 struct raw6_sock
*rp
= raw6_sk(sk
);
936 if (inet_sk(sk
)->num
!= IPPROTO_ICMPV6
)
938 return rawv6_geticmpfilter(sk
, level
, optname
, optval
,
941 if (optname
== IPV6_CHECKSUM
)
944 return ipv6_getsockopt(sk
, level
, optname
, optval
,
948 if (get_user(len
,optlen
))
953 if (rp
->checksum
== 0)
963 len
= min_t(unsigned int, sizeof(int), len
);
965 if (put_user(len
, optlen
))
967 if (copy_to_user(optval
,&val
,len
))
972 static int rawv6_ioctl(struct sock
*sk
, int cmd
, unsigned long arg
)
977 int amount
= atomic_read(&sk
->sk_wmem_alloc
);
978 return put_user(amount
, (int __user
*)arg
);
985 spin_lock_bh(&sk
->sk_receive_queue
.lock
);
986 skb
= skb_peek(&sk
->sk_receive_queue
);
988 amount
= skb
->tail
- skb
->h
.raw
;
989 spin_unlock_bh(&sk
->sk_receive_queue
.lock
);
990 return put_user(amount
, (int __user
*)arg
);
998 static void rawv6_close(struct sock
*sk
, long timeout
)
1000 if (inet_sk(sk
)->num
== IPPROTO_RAW
)
1001 ip6_ra_control(sk
, -1, NULL
);
1003 sk_common_release(sk
);
1006 static int rawv6_init_sk(struct sock
*sk
)
1008 if (inet_sk(sk
)->num
== IPPROTO_ICMPV6
) {
1009 struct raw6_sock
*rp
= raw6_sk(sk
);
1016 struct proto rawv6_prot
= {
1018 .owner
= THIS_MODULE
,
1019 .close
= rawv6_close
,
1020 .connect
= ip6_datagram_connect
,
1021 .disconnect
= udp_disconnect
,
1022 .ioctl
= rawv6_ioctl
,
1023 .init
= rawv6_init_sk
,
1024 .destroy
= inet6_destroy_sock
,
1025 .setsockopt
= rawv6_setsockopt
,
1026 .getsockopt
= rawv6_getsockopt
,
1027 .sendmsg
= rawv6_sendmsg
,
1028 .recvmsg
= rawv6_recvmsg
,
1030 .backlog_rcv
= rawv6_rcv_skb
,
1031 .hash
= raw_v6_hash
,
1032 .unhash
= raw_v6_unhash
,
1033 .obj_size
= sizeof(struct raw6_sock
),
1036 #ifdef CONFIG_PROC_FS
1037 struct raw6_iter_state
{
1041 #define raw6_seq_private(seq) ((struct raw6_iter_state *)(seq)->private)
1043 static struct sock
*raw6_get_first(struct seq_file
*seq
)
1046 struct hlist_node
*node
;
1047 struct raw6_iter_state
* state
= raw6_seq_private(seq
);
1049 for (state
->bucket
= 0; state
->bucket
< RAWV6_HTABLE_SIZE
; ++state
->bucket
)
1050 sk_for_each(sk
, node
, &raw_v6_htable
[state
->bucket
])
1051 if (sk
->sk_family
== PF_INET6
)
1058 static struct sock
*raw6_get_next(struct seq_file
*seq
, struct sock
*sk
)
1060 struct raw6_iter_state
* state
= raw6_seq_private(seq
);
1066 } while (sk
&& sk
->sk_family
!= PF_INET6
);
1068 if (!sk
&& ++state
->bucket
< RAWV6_HTABLE_SIZE
) {
1069 sk
= sk_head(&raw_v6_htable
[state
->bucket
]);
1075 static struct sock
*raw6_get_idx(struct seq_file
*seq
, loff_t pos
)
1077 struct sock
*sk
= raw6_get_first(seq
);
1079 while (pos
&& (sk
= raw6_get_next(seq
, sk
)) != NULL
)
1081 return pos
? NULL
: sk
;
1084 static void *raw6_seq_start(struct seq_file
*seq
, loff_t
*pos
)
1086 read_lock(&raw_v6_lock
);
1087 return *pos
? raw6_get_idx(seq
, *pos
- 1) : SEQ_START_TOKEN
;
1090 static void *raw6_seq_next(struct seq_file
*seq
, void *v
, loff_t
*pos
)
1094 if (v
== SEQ_START_TOKEN
)
1095 sk
= raw6_get_first(seq
);
1097 sk
= raw6_get_next(seq
, v
);
1102 static void raw6_seq_stop(struct seq_file
*seq
, void *v
)
1104 read_unlock(&raw_v6_lock
);
1107 static void raw6_sock_seq_show(struct seq_file
*seq
, struct sock
*sp
, int i
)
1109 struct ipv6_pinfo
*np
= inet6_sk(sp
);
1110 struct in6_addr
*dest
, *src
;
1114 src
= &np
->rcv_saddr
;
1116 srcp
= inet_sk(sp
)->num
;
1118 "%4d: %08X%08X%08X%08X:%04X %08X%08X%08X%08X:%04X "
1119 "%02X %08X:%08X %02X:%08lX %08X %5d %8d %lu %d %p\n",
1121 src
->s6_addr32
[0], src
->s6_addr32
[1],
1122 src
->s6_addr32
[2], src
->s6_addr32
[3], srcp
,
1123 dest
->s6_addr32
[0], dest
->s6_addr32
[1],
1124 dest
->s6_addr32
[2], dest
->s6_addr32
[3], destp
,
1126 atomic_read(&sp
->sk_wmem_alloc
),
1127 atomic_read(&sp
->sk_rmem_alloc
),
1131 atomic_read(&sp
->sk_refcnt
), sp
);
1134 static int raw6_seq_show(struct seq_file
*seq
, void *v
)
1136 if (v
== SEQ_START_TOKEN
)
1141 "st tx_queue rx_queue tr tm->when retrnsmt"
1142 " uid timeout inode\n");
1144 raw6_sock_seq_show(seq
, v
, raw6_seq_private(seq
)->bucket
);
1148 static struct seq_operations raw6_seq_ops
= {
1149 .start
= raw6_seq_start
,
1150 .next
= raw6_seq_next
,
1151 .stop
= raw6_seq_stop
,
1152 .show
= raw6_seq_show
,
1155 static int raw6_seq_open(struct inode
*inode
, struct file
*file
)
1157 struct seq_file
*seq
;
1159 struct raw6_iter_state
*s
= kmalloc(sizeof(*s
), GFP_KERNEL
);
1162 rc
= seq_open(file
, &raw6_seq_ops
);
1165 seq
= file
->private_data
;
1167 memset(s
, 0, sizeof(*s
));
1175 static struct file_operations raw6_seq_fops
= {
1176 .owner
= THIS_MODULE
,
1177 .open
= raw6_seq_open
,
1179 .llseek
= seq_lseek
,
1180 .release
= seq_release_private
,
1183 int __init
raw6_proc_init(void)
1185 if (!proc_net_fops_create("raw6", S_IRUGO
, &raw6_seq_fops
))
1190 void raw6_proc_exit(void)
1192 proc_net_remove("raw6");
1194 #endif /* CONFIG_PROC_FS */