/* SCTP kernel reference Implementation
|
/* SCTP kernel reference Implementation
|
* Copyright (c) 2001 Nokia, Inc.
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* Copyright (c) 2001 Nokia, Inc.
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* Copyright (c) 2001 La Monte H.P. Yarroll
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* Copyright (c) 2001 La Monte H.P. Yarroll
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* Copyright (c) 2002-2003 International Business Machines, Corp.
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* Copyright (c) 2002-2003 International Business Machines, Corp.
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* Copyright (c) 2002-2003 Intel Corp.
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* Copyright (c) 2002-2003 Intel Corp.
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*
|
*
|
* This file is part of the SCTP kernel reference Implementation
|
* This file is part of the SCTP kernel reference Implementation
|
*
|
*
|
* SCTP over IPv6.
|
* SCTP over IPv6.
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*
|
*
|
* The SCTP reference implementation is free software;
|
* The SCTP reference implementation is free software;
|
* you can redistribute it and/or modify it under the terms of
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* you can redistribute it and/or modify it under the terms of
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* the GNU General Public License as published by
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* the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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* any later version.
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*
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*
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* The SCTP reference implementation is distributed in the hope that it
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* The SCTP reference implementation is distributed in the hope that it
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* will be useful, but WITHOUT ANY WARRANTY; without even the implied
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* will be useful, but WITHOUT ANY WARRANTY; without even the implied
|
* ************************
|
* ************************
|
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU General Public License for more details.
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* See the GNU General Public License for more details.
|
*
|
*
|
* You should have received a copy of the GNU General Public License
|
* You should have received a copy of the GNU General Public License
|
* along with GNU CC; see the file COPYING. If not, write to
|
* along with GNU CC; see the file COPYING. If not, write to
|
* the Free Software Foundation, 59 Temple Place - Suite 330,
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* the Free Software Foundation, 59 Temple Place - Suite 330,
|
* Boston, MA 02111-1307, USA.
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* Boston, MA 02111-1307, USA.
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*
|
*
|
* Please send any bug reports or fixes you make to the
|
* Please send any bug reports or fixes you make to the
|
* email address(es):
|
* email address(es):
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* lksctp developers <lksctp-developers@lists.sourceforge.net>
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* lksctp developers <lksctp-developers@lists.sourceforge.net>
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*
|
*
|
* Or submit a bug report through the following website:
|
* Or submit a bug report through the following website:
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* http://www.sf.net/projects/lksctp
|
* http://www.sf.net/projects/lksctp
|
*
|
*
|
* Written or modified by:
|
* Written or modified by:
|
* Le Yanqun <yanqun.le@nokia.com>
|
* Le Yanqun <yanqun.le@nokia.com>
|
* Hui Huang <hui.huang@nokia.com>
|
* Hui Huang <hui.huang@nokia.com>
|
* La Monte H.P. Yarroll <piggy@acm.org>
|
* La Monte H.P. Yarroll <piggy@acm.org>
|
* Sridhar Samudrala <sri@us.ibm.com>
|
* Sridhar Samudrala <sri@us.ibm.com>
|
* Jon Grimm <jgrimm@us.ibm.com>
|
* Jon Grimm <jgrimm@us.ibm.com>
|
* Ardelle Fan <ardelle.fan@intel.com>
|
* Ardelle Fan <ardelle.fan@intel.com>
|
*
|
*
|
* Based on:
|
* Based on:
|
* linux/net/ipv6/tcp_ipv6.c
|
* linux/net/ipv6/tcp_ipv6.c
|
*
|
*
|
* Any bugs reported given to us we will try to fix... any fixes shared will
|
* Any bugs reported given to us we will try to fix... any fixes shared will
|
* be incorporated into the next SCTP release.
|
* be incorporated into the next SCTP release.
|
*/
|
*/
|
|
|
#include <linux/module.h>
|
#include <linux/module.h>
|
#include <linux/errno.h>
|
#include <linux/errno.h>
|
#include <linux/types.h>
|
#include <linux/types.h>
|
#include <linux/socket.h>
|
#include <linux/socket.h>
|
#include <linux/sockios.h>
|
#include <linux/sockios.h>
|
#include <linux/net.h>
|
#include <linux/net.h>
|
#include <linux/sched.h>
|
#include <linux/sched.h>
|
#include <linux/in.h>
|
#include <linux/in.h>
|
#include <linux/in6.h>
|
#include <linux/in6.h>
|
#include <linux/netdevice.h>
|
#include <linux/netdevice.h>
|
#include <linux/init.h>
|
#include <linux/init.h>
|
#include <linux/ipsec.h>
|
#include <linux/ipsec.h>
|
|
|
#include <linux/ipv6.h>
|
#include <linux/ipv6.h>
|
#include <linux/icmpv6.h>
|
#include <linux/icmpv6.h>
|
#include <linux/random.h>
|
#include <linux/random.h>
|
#include <linux/seq_file.h>
|
#include <linux/seq_file.h>
|
|
|
#include <net/protocol.h>
|
#include <net/protocol.h>
|
#include <net/tcp.h>
|
#include <net/tcp.h>
|
#include <net/ndisc.h>
|
#include <net/ndisc.h>
|
#include <net/ipv6.h>
|
#include <net/ipv6.h>
|
#include <net/transp_v6.h>
|
#include <net/transp_v6.h>
|
#include <net/addrconf.h>
|
#include <net/addrconf.h>
|
#include <net/ip6_route.h>
|
#include <net/ip6_route.h>
|
#include <net/inet_common.h>
|
#include <net/inet_common.h>
|
#include <net/inet_ecn.h>
|
#include <net/inet_ecn.h>
|
#include <net/sctp/sctp.h>
|
#include <net/sctp/sctp.h>
|
|
|
#include <asm/uaccess.h>
|
#include <asm/uaccess.h>
|
|
|
extern struct notifier_block sctp_inetaddr_notifier;
|
extern struct notifier_block sctp_inetaddr_notifier;
|
|
|
/* FIXME: This macro needs to be moved to a common header file. */
|
/* FIXME: This macro needs to be moved to a common header file. */
|
#define NIP6(addr) \
|
#define NIP6(addr) \
|
ntohs((addr)->s6_addr16[0]), \
|
ntohs((addr)->s6_addr16[0]), \
|
ntohs((addr)->s6_addr16[1]), \
|
ntohs((addr)->s6_addr16[1]), \
|
ntohs((addr)->s6_addr16[2]), \
|
ntohs((addr)->s6_addr16[2]), \
|
ntohs((addr)->s6_addr16[3]), \
|
ntohs((addr)->s6_addr16[3]), \
|
ntohs((addr)->s6_addr16[4]), \
|
ntohs((addr)->s6_addr16[4]), \
|
ntohs((addr)->s6_addr16[5]), \
|
ntohs((addr)->s6_addr16[5]), \
|
ntohs((addr)->s6_addr16[6]), \
|
ntohs((addr)->s6_addr16[6]), \
|
ntohs((addr)->s6_addr16[7])
|
ntohs((addr)->s6_addr16[7])
|
|
|
/* ICMP error handler. */
|
/* ICMP error handler. */
|
void sctp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
|
void sctp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
|
int type, int code, int offset, __u32 info)
|
int type, int code, int offset, __u32 info)
|
{
|
{
|
struct inet6_dev *idev;
|
struct inet6_dev *idev;
|
struct ipv6hdr *iph = (struct ipv6hdr *)skb->data;
|
struct ipv6hdr *iph = (struct ipv6hdr *)skb->data;
|
struct sctphdr *sh = (struct sctphdr *)(skb->data + offset);
|
struct sctphdr *sh = (struct sctphdr *)(skb->data + offset);
|
struct sock *sk;
|
struct sock *sk;
|
struct sctp_endpoint *ep;
|
struct sctp_endpoint *ep;
|
struct sctp_association *asoc;
|
struct sctp_association *asoc;
|
struct sctp_transport *transport;
|
struct sctp_transport *transport;
|
struct ipv6_pinfo *np;
|
struct ipv6_pinfo *np;
|
char *saveip, *savesctp;
|
char *saveip, *savesctp;
|
int err;
|
int err;
|
|
|
idev = in6_dev_get(skb->dev);
|
idev = in6_dev_get(skb->dev);
|
|
|
/* Fix up skb to look at the embedded net header. */
|
/* Fix up skb to look at the embedded net header. */
|
saveip = skb->nh.raw;
|
saveip = skb->nh.raw;
|
savesctp = skb->h.raw;
|
savesctp = skb->h.raw;
|
skb->nh.ipv6h = iph;
|
skb->nh.ipv6h = iph;
|
skb->h.raw = (char *)sh;
|
skb->h.raw = (char *)sh;
|
sk = sctp_err_lookup(AF_INET6, skb, sh, &ep, &asoc, &transport);
|
sk = sctp_err_lookup(AF_INET6, skb, sh, &ep, &asoc, &transport);
|
/* Put back, the original pointers. */
|
/* Put back, the original pointers. */
|
skb->nh.raw = saveip;
|
skb->nh.raw = saveip;
|
skb->h.raw = savesctp;
|
skb->h.raw = savesctp;
|
if (!sk) {
|
if (!sk) {
|
ICMP6_INC_STATS_BH(Icmp6InErrors);
|
ICMP6_INC_STATS_BH(Icmp6InErrors);
|
goto out;
|
goto out;
|
}
|
}
|
|
|
/* Warning: The sock lock is held. Remember to call
|
/* Warning: The sock lock is held. Remember to call
|
* sctp_err_finish!
|
* sctp_err_finish!
|
*/
|
*/
|
|
|
switch (type) {
|
switch (type) {
|
case ICMPV6_PKT_TOOBIG:
|
case ICMPV6_PKT_TOOBIG:
|
sctp_icmp_frag_needed(sk, asoc, transport, ntohl(info));
|
sctp_icmp_frag_needed(sk, asoc, transport, ntohl(info));
|
goto out_unlock;
|
goto out_unlock;
|
default:
|
default:
|
break;
|
break;
|
}
|
}
|
|
|
np = inet6_sk(sk);
|
np = inet6_sk(sk);
|
icmpv6_err_convert(type, code, &err);
|
icmpv6_err_convert(type, code, &err);
|
if (!sock_owned_by_user(sk) && np->recverr) {
|
if (!sock_owned_by_user(sk) && np->recverr) {
|
sk->sk_err = err;
|
sk->sk_err = err;
|
sk->sk_error_report(sk);
|
sk->sk_error_report(sk);
|
} else { /* Only an error on timeout */
|
} else { /* Only an error on timeout */
|
sk->sk_err_soft = err;
|
sk->sk_err_soft = err;
|
}
|
}
|
|
|
out_unlock:
|
out_unlock:
|
sctp_err_finish(sk, ep, asoc);
|
sctp_err_finish(sk, ep, asoc);
|
out:
|
out:
|
if (likely(idev != NULL))
|
if (likely(idev != NULL))
|
in6_dev_put(idev);
|
in6_dev_put(idev);
|
}
|
}
|
|
|
/* Based on tcp_v6_xmit() in tcp_ipv6.c. */
|
/* Based on tcp_v6_xmit() in tcp_ipv6.c. */
|
static int sctp_v6_xmit(struct sk_buff *skb, struct sctp_transport *transport,
|
static int sctp_v6_xmit(struct sk_buff *skb, struct sctp_transport *transport,
|
int ipfragok)
|
int ipfragok)
|
{
|
{
|
struct sock *sk = skb->sk;
|
struct sock *sk = skb->sk;
|
struct ipv6_pinfo *np = inet6_sk(sk);
|
struct ipv6_pinfo *np = inet6_sk(sk);
|
struct flowi fl;
|
struct flowi fl;
|
|
|
memset(&fl, 0, sizeof(fl));
|
memset(&fl, 0, sizeof(fl));
|
|
|
fl.proto = sk->sk_protocol;
|
fl.proto = sk->sk_protocol;
|
|
|
/* Fill in the dest address from the route entry passed with the skb
|
/* Fill in the dest address from the route entry passed with the skb
|
* and the source address from the transport.
|
* and the source address from the transport.
|
*/
|
*/
|
fl.fl6_dst = &transport->ipaddr.v6.sin6_addr;
|
fl.fl6_dst = &transport->ipaddr.v6.sin6_addr;
|
fl.fl6_src = &transport->saddr.v6.sin6_addr;
|
fl.fl6_src = &transport->saddr.v6.sin6_addr;
|
|
|
fl.fl6_flowlabel = np->flow_label;
|
fl.fl6_flowlabel = np->flow_label;
|
IP6_ECN_flow_xmit(sk, fl.fl6_flowlabel);
|
IP6_ECN_flow_xmit(sk, fl.fl6_flowlabel);
|
if (ipv6_addr_type(fl.fl6_src) & IPV6_ADDR_LINKLOCAL)
|
if (ipv6_addr_type(fl.fl6_src) & IPV6_ADDR_LINKLOCAL)
|
fl.oif = transport->saddr.v6.sin6_scope_id;
|
fl.oif = transport->saddr.v6.sin6_scope_id;
|
else
|
else
|
fl.oif = sk->sk_bound_dev_if;
|
fl.oif = sk->sk_bound_dev_if;
|
fl.uli_u.ports.sport = sk->sport;
|
fl.uli_u.ports.sport = sk->sport;
|
fl.uli_u.ports.dport = transport->ipaddr.v6.sin6_port;
|
fl.uli_u.ports.dport = transport->ipaddr.v6.sin6_port;
|
|
|
if (np->opt && np->opt->srcrt) {
|
if (np->opt && np->opt->srcrt) {
|
struct rt0_hdr *rt0 = (struct rt0_hdr *) np->opt->srcrt;
|
struct rt0_hdr *rt0 = (struct rt0_hdr *) np->opt->srcrt;
|
fl.fl6_dst = rt0->addr;
|
fl.fl6_dst = rt0->addr;
|
}
|
}
|
|
|
SCTP_DEBUG_PRINTK("%s: skb:%p, len:%d, "
|
SCTP_DEBUG_PRINTK("%s: skb:%p, len:%d, "
|
"src:%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x "
|
"src:%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x "
|
"dst:%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x\n",
|
"dst:%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x\n",
|
__FUNCTION__, skb, skb->len,
|
__FUNCTION__, skb, skb->len,
|
NIP6(fl.fl6_src), NIP6(fl.fl6_dst));
|
NIP6(fl.fl6_src), NIP6(fl.fl6_dst));
|
|
|
SCTP_INC_STATS(SctpOutSCTPPacks);
|
SCTP_INC_STATS(SctpOutSCTPPacks);
|
|
|
return ip6_xmit(sk, skb, &fl, np->opt);
|
return ip6_xmit(sk, skb, &fl, np->opt);
|
}
|
}
|
|
|
/* Returns the dst cache entry for the given source and destination ip
|
/* Returns the dst cache entry for the given source and destination ip
|
* addresses.
|
* addresses.
|
*/
|
*/
|
struct dst_entry *sctp_v6_get_dst(struct sctp_association *asoc,
|
struct dst_entry *sctp_v6_get_dst(struct sctp_association *asoc,
|
union sctp_addr *daddr,
|
union sctp_addr *daddr,
|
union sctp_addr *saddr)
|
union sctp_addr *saddr)
|
{
|
{
|
struct dst_entry *dst;
|
struct dst_entry *dst;
|
struct flowi fl;
|
struct flowi fl;
|
|
|
memset(&fl, 0, sizeof(fl));
|
memset(&fl, 0, sizeof(fl));
|
fl.fl6_dst = &daddr->v6.sin6_addr;
|
fl.fl6_dst = &daddr->v6.sin6_addr;
|
if (ipv6_addr_type(&daddr->v6.sin6_addr) & IPV6_ADDR_LINKLOCAL)
|
if (ipv6_addr_type(&daddr->v6.sin6_addr) & IPV6_ADDR_LINKLOCAL)
|
fl.oif = daddr->v6.sin6_scope_id;
|
fl.oif = daddr->v6.sin6_scope_id;
|
|
|
|
|
SCTP_DEBUG_PRINTK("%s: DST=%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x ",
|
SCTP_DEBUG_PRINTK("%s: DST=%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x ",
|
__FUNCTION__, NIP6(fl.fl6_dst));
|
__FUNCTION__, NIP6(fl.fl6_dst));
|
|
|
if (saddr) {
|
if (saddr) {
|
fl.fl6_src = &saddr->v6.sin6_addr;
|
fl.fl6_src = &saddr->v6.sin6_addr;
|
SCTP_DEBUG_PRINTK(
|
SCTP_DEBUG_PRINTK(
|
"SRC=%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x - ",
|
"SRC=%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x - ",
|
NIP6(fl.fl6_src));
|
NIP6(fl.fl6_src));
|
}
|
}
|
|
|
dst = ip6_route_output(NULL, &fl);
|
dst = ip6_route_output(NULL, &fl);
|
if (dst) {
|
if (dst) {
|
struct rt6_info *rt;
|
struct rt6_info *rt;
|
rt = (struct rt6_info *)dst;
|
rt = (struct rt6_info *)dst;
|
SCTP_DEBUG_PRINTK(
|
SCTP_DEBUG_PRINTK(
|
"rt6_dst:%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x "
|
"rt6_dst:%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x "
|
"rt6_src:%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x\n",
|
"rt6_src:%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x\n",
|
NIP6(&rt->rt6i_dst.addr), NIP6(&rt->rt6i_src.addr));
|
NIP6(&rt->rt6i_dst.addr), NIP6(&rt->rt6i_src.addr));
|
} else {
|
} else {
|
SCTP_DEBUG_PRINTK("NO ROUTE\n");
|
SCTP_DEBUG_PRINTK("NO ROUTE\n");
|
}
|
}
|
|
|
return dst;
|
return dst;
|
}
|
}
|
|
|
/* Returns the number of consecutive initial bits that match in the 2 ipv6
|
/* Returns the number of consecutive initial bits that match in the 2 ipv6
|
* addresses.
|
* addresses.
|
*/
|
*/
|
static inline int sctp_v6_addr_match_len(union sctp_addr *s1,
|
static inline int sctp_v6_addr_match_len(union sctp_addr *s1,
|
union sctp_addr *s2)
|
union sctp_addr *s2)
|
{
|
{
|
struct in6_addr *a1 = &s1->v6.sin6_addr;
|
struct in6_addr *a1 = &s1->v6.sin6_addr;
|
struct in6_addr *a2 = &s2->v6.sin6_addr;
|
struct in6_addr *a2 = &s2->v6.sin6_addr;
|
int i, j;
|
int i, j;
|
|
|
for (i = 0; i < 4 ; i++) {
|
for (i = 0; i < 4 ; i++) {
|
__u32 a1xora2;
|
__u32 a1xora2;
|
|
|
a1xora2 = a1->s6_addr32[i] ^ a2->s6_addr32[i];
|
a1xora2 = a1->s6_addr32[i] ^ a2->s6_addr32[i];
|
|
|
if ((j = fls(ntohl(a1xora2))))
|
if ((j = fls(ntohl(a1xora2))))
|
return (i * 32 + 32 - j);
|
return (i * 32 + 32 - j);
|
}
|
}
|
|
|
return (i*32);
|
return (i*32);
|
}
|
}
|
|
|
/* Fills in the source address(saddr) based on the destination address(daddr)
|
/* Fills in the source address(saddr) based on the destination address(daddr)
|
* and asoc's bind address list.
|
* and asoc's bind address list.
|
*/
|
*/
|
void sctp_v6_get_saddr(struct sctp_association *asoc, struct dst_entry *dst,
|
void sctp_v6_get_saddr(struct sctp_association *asoc, struct dst_entry *dst,
|
union sctp_addr *daddr, union sctp_addr *saddr)
|
union sctp_addr *daddr, union sctp_addr *saddr)
|
{
|
{
|
struct sctp_bind_addr *bp;
|
struct sctp_bind_addr *bp;
|
rwlock_t *addr_lock;
|
rwlock_t *addr_lock;
|
struct sctp_sockaddr_entry *laddr;
|
struct sctp_sockaddr_entry *laddr;
|
struct list_head *pos;
|
struct list_head *pos;
|
sctp_scope_t scope;
|
sctp_scope_t scope;
|
union sctp_addr *baddr = NULL;
|
union sctp_addr *baddr = NULL;
|
__u8 matchlen = 0;
|
__u8 matchlen = 0;
|
__u8 bmatchlen;
|
__u8 bmatchlen;
|
|
|
SCTP_DEBUG_PRINTK("%s: asoc:%p dst:%p "
|
SCTP_DEBUG_PRINTK("%s: asoc:%p dst:%p "
|
"daddr:%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x ",
|
"daddr:%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x ",
|
__FUNCTION__, asoc, dst, NIP6(&daddr->v6.sin6_addr));
|
__FUNCTION__, asoc, dst, NIP6(&daddr->v6.sin6_addr));
|
|
|
if (!asoc) {
|
if (!asoc) {
|
ipv6_get_saddr(dst, &daddr->v6.sin6_addr,&saddr->v6.sin6_addr);
|
ipv6_get_saddr(dst, &daddr->v6.sin6_addr,&saddr->v6.sin6_addr);
|
SCTP_DEBUG_PRINTK("saddr from ipv6_get_saddr: "
|
SCTP_DEBUG_PRINTK("saddr from ipv6_get_saddr: "
|
"%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x\n",
|
"%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x\n",
|
NIP6(&saddr->v6.sin6_addr));
|
NIP6(&saddr->v6.sin6_addr));
|
return;
|
return;
|
}
|
}
|
|
|
scope = sctp_scope(daddr);
|
scope = sctp_scope(daddr);
|
|
|
bp = &asoc->base.bind_addr;
|
bp = &asoc->base.bind_addr;
|
addr_lock = &asoc->base.addr_lock;
|
addr_lock = &asoc->base.addr_lock;
|
|
|
/* Go through the bind address list and find the best source address
|
/* Go through the bind address list and find the best source address
|
* that matches the scope of the destination address.
|
* that matches the scope of the destination address.
|
*/
|
*/
|
sctp_read_lock(addr_lock);
|
sctp_read_lock(addr_lock);
|
list_for_each(pos, &bp->address_list) {
|
list_for_each(pos, &bp->address_list) {
|
laddr = list_entry(pos, struct sctp_sockaddr_entry, list);
|
laddr = list_entry(pos, struct sctp_sockaddr_entry, list);
|
if ((laddr->a.sa.sa_family == AF_INET6) &&
|
if ((laddr->a.sa.sa_family == AF_INET6) &&
|
(scope <= sctp_scope(&laddr->a))) {
|
(scope <= sctp_scope(&laddr->a))) {
|
bmatchlen = sctp_v6_addr_match_len(daddr, &laddr->a);
|
bmatchlen = sctp_v6_addr_match_len(daddr, &laddr->a);
|
if (!baddr || (matchlen < bmatchlen)) {
|
if (!baddr || (matchlen < bmatchlen)) {
|
baddr = &laddr->a;
|
baddr = &laddr->a;
|
matchlen = bmatchlen;
|
matchlen = bmatchlen;
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
if (baddr) {
|
if (baddr) {
|
memcpy(saddr, baddr, sizeof(union sctp_addr));
|
memcpy(saddr, baddr, sizeof(union sctp_addr));
|
SCTP_DEBUG_PRINTK("saddr: "
|
SCTP_DEBUG_PRINTK("saddr: "
|
"%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x\n",
|
"%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x\n",
|
NIP6(&saddr->v6.sin6_addr));
|
NIP6(&saddr->v6.sin6_addr));
|
} else {
|
} else {
|
printk(KERN_ERR "%s: asoc:%p Could not find a valid source "
|
printk(KERN_ERR "%s: asoc:%p Could not find a valid source "
|
"address for the "
|
"address for the "
|
"dest:%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x\n",
|
"dest:%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x\n",
|
__FUNCTION__, asoc, NIP6(&daddr->v6.sin6_addr));
|
__FUNCTION__, asoc, NIP6(&daddr->v6.sin6_addr));
|
}
|
}
|
|
|
sctp_read_unlock(addr_lock);
|
sctp_read_unlock(addr_lock);
|
}
|
}
|
|
|
/* Make a copy of all potential local addresses. */
|
/* Make a copy of all potential local addresses. */
|
static void sctp_v6_copy_addrlist(struct list_head *addrlist,
|
static void sctp_v6_copy_addrlist(struct list_head *addrlist,
|
struct net_device *dev)
|
struct net_device *dev)
|
{
|
{
|
struct inet6_dev *in6_dev;
|
struct inet6_dev *in6_dev;
|
struct inet6_ifaddr *ifp;
|
struct inet6_ifaddr *ifp;
|
struct sctp_sockaddr_entry *addr;
|
struct sctp_sockaddr_entry *addr;
|
|
|
read_lock(&addrconf_lock);
|
read_lock(&addrconf_lock);
|
if ((in6_dev = __in6_dev_get(dev)) == NULL) {
|
if ((in6_dev = __in6_dev_get(dev)) == NULL) {
|
read_unlock(&addrconf_lock);
|
read_unlock(&addrconf_lock);
|
return;
|
return;
|
}
|
}
|
|
|
read_lock(&in6_dev->lock);
|
read_lock(&in6_dev->lock);
|
for (ifp = in6_dev->addr_list; ifp; ifp = ifp->if_next) {
|
for (ifp = in6_dev->addr_list; ifp; ifp = ifp->if_next) {
|
/* Add the address to the local list. */
|
/* Add the address to the local list. */
|
addr = t_new(struct sctp_sockaddr_entry, GFP_ATOMIC);
|
addr = t_new(struct sctp_sockaddr_entry, GFP_ATOMIC);
|
if (addr) {
|
if (addr) {
|
addr->a.v6.sin6_family = AF_INET6;
|
addr->a.v6.sin6_family = AF_INET6;
|
addr->a.v6.sin6_port = 0;
|
addr->a.v6.sin6_port = 0;
|
addr->a.v6.sin6_addr = ifp->addr;
|
addr->a.v6.sin6_addr = ifp->addr;
|
addr->a.v6.sin6_scope_id = dev->ifindex;
|
addr->a.v6.sin6_scope_id = dev->ifindex;
|
INIT_LIST_HEAD(&addr->list);
|
INIT_LIST_HEAD(&addr->list);
|
list_add_tail(&addr->list, addrlist);
|
list_add_tail(&addr->list, addrlist);
|
}
|
}
|
}
|
}
|
|
|
read_unlock(&in6_dev->lock);
|
read_unlock(&in6_dev->lock);
|
read_unlock(&addrconf_lock);
|
read_unlock(&addrconf_lock);
|
}
|
}
|
|
|
/* Initialize a sockaddr_storage from in incoming skb. */
|
/* Initialize a sockaddr_storage from in incoming skb. */
|
static void sctp_v6_from_skb(union sctp_addr *addr,struct sk_buff *skb,
|
static void sctp_v6_from_skb(union sctp_addr *addr,struct sk_buff *skb,
|
int is_saddr)
|
int is_saddr)
|
{
|
{
|
void *from;
|
void *from;
|
__u16 *port;
|
__u16 *port;
|
struct sctphdr *sh;
|
struct sctphdr *sh;
|
|
|
port = &addr->v6.sin6_port;
|
port = &addr->v6.sin6_port;
|
addr->v6.sin6_family = AF_INET6;
|
addr->v6.sin6_family = AF_INET6;
|
addr->v6.sin6_flowinfo = 0; /* FIXME */
|
addr->v6.sin6_flowinfo = 0; /* FIXME */
|
addr->v6.sin6_scope_id = ((struct inet6_skb_parm *)skb->cb)->iif;
|
addr->v6.sin6_scope_id = ((struct inet6_skb_parm *)skb->cb)->iif;
|
|
|
sh = (struct sctphdr *) skb->h.raw;
|
sh = (struct sctphdr *) skb->h.raw;
|
if (is_saddr) {
|
if (is_saddr) {
|
*port = ntohs(sh->source);
|
*port = ntohs(sh->source);
|
from = &skb->nh.ipv6h->saddr;
|
from = &skb->nh.ipv6h->saddr;
|
} else {
|
} else {
|
*port = ntohs(sh->dest);
|
*port = ntohs(sh->dest);
|
from = &skb->nh.ipv6h->daddr;
|
from = &skb->nh.ipv6h->daddr;
|
}
|
}
|
ipv6_addr_copy(&addr->v6.sin6_addr, from);
|
ipv6_addr_copy(&addr->v6.sin6_addr, from);
|
}
|
}
|
|
|
/* Initialize an sctp_addr from a socket. */
|
/* Initialize an sctp_addr from a socket. */
|
static void sctp_v6_from_sk(union sctp_addr *addr, struct sock *sk)
|
static void sctp_v6_from_sk(union sctp_addr *addr, struct sock *sk)
|
{
|
{
|
addr->v6.sin6_family = AF_INET6;
|
addr->v6.sin6_family = AF_INET6;
|
addr->v6.sin6_port = sk->num;
|
addr->v6.sin6_port = sk->num;
|
addr->v6.sin6_addr = inet6_sk(sk)->rcv_saddr;
|
addr->v6.sin6_addr = inet6_sk(sk)->rcv_saddr;
|
}
|
}
|
|
|
/* Initialize sk->sk_rcv_saddr from sctp_addr. */
|
/* Initialize sk->sk_rcv_saddr from sctp_addr. */
|
static void sctp_v6_to_sk_saddr(union sctp_addr *addr, struct sock *sk)
|
static void sctp_v6_to_sk_saddr(union sctp_addr *addr, struct sock *sk)
|
{
|
{
|
if (addr->sa.sa_family == AF_INET && sctp_sk(sk)->v4mapped) {
|
if (addr->sa.sa_family == AF_INET && sctp_sk(sk)->v4mapped) {
|
inet6_sk(sk)->rcv_saddr.s6_addr32[0] = 0;
|
inet6_sk(sk)->rcv_saddr.s6_addr32[0] = 0;
|
inet6_sk(sk)->rcv_saddr.s6_addr32[1] = 0;
|
inet6_sk(sk)->rcv_saddr.s6_addr32[1] = 0;
|
inet6_sk(sk)->rcv_saddr.s6_addr32[2] = htonl(0x0000ffff);
|
inet6_sk(sk)->rcv_saddr.s6_addr32[2] = htonl(0x0000ffff);
|
inet6_sk(sk)->rcv_saddr.s6_addr32[3] =
|
inet6_sk(sk)->rcv_saddr.s6_addr32[3] =
|
addr->v4.sin_addr.s_addr;
|
addr->v4.sin_addr.s_addr;
|
} else {
|
} else {
|
inet6_sk(sk)->rcv_saddr = addr->v6.sin6_addr;
|
inet6_sk(sk)->rcv_saddr = addr->v6.sin6_addr;
|
}
|
}
|
}
|
}
|
|
|
/* Initialize sk->sk_daddr from sctp_addr. */
|
/* Initialize sk->sk_daddr from sctp_addr. */
|
static void sctp_v6_to_sk_daddr(union sctp_addr *addr, struct sock *sk)
|
static void sctp_v6_to_sk_daddr(union sctp_addr *addr, struct sock *sk)
|
{
|
{
|
if (addr->sa.sa_family == AF_INET && sctp_sk(sk)->v4mapped) {
|
if (addr->sa.sa_family == AF_INET && sctp_sk(sk)->v4mapped) {
|
inet6_sk(sk)->daddr.s6_addr32[0] = 0;
|
inet6_sk(sk)->daddr.s6_addr32[0] = 0;
|
inet6_sk(sk)->daddr.s6_addr32[1] = 0;
|
inet6_sk(sk)->daddr.s6_addr32[1] = 0;
|
inet6_sk(sk)->daddr.s6_addr32[2] = htonl(0x0000ffff);
|
inet6_sk(sk)->daddr.s6_addr32[2] = htonl(0x0000ffff);
|
inet6_sk(sk)->daddr.s6_addr32[3] = addr->v4.sin_addr.s_addr;
|
inet6_sk(sk)->daddr.s6_addr32[3] = addr->v4.sin_addr.s_addr;
|
} else {
|
} else {
|
inet6_sk(sk)->daddr = addr->v6.sin6_addr;
|
inet6_sk(sk)->daddr = addr->v6.sin6_addr;
|
}
|
}
|
}
|
}
|
|
|
/* Initialize a sctp_addr from an address parameter. */
|
/* Initialize a sctp_addr from an address parameter. */
|
static void sctp_v6_from_addr_param(union sctp_addr *addr,
|
static void sctp_v6_from_addr_param(union sctp_addr *addr,
|
union sctp_addr_param *param,
|
union sctp_addr_param *param,
|
__u16 port, int iif)
|
__u16 port, int iif)
|
{
|
{
|
addr->v6.sin6_family = AF_INET6;
|
addr->v6.sin6_family = AF_INET6;
|
addr->v6.sin6_port = port;
|
addr->v6.sin6_port = port;
|
addr->v6.sin6_flowinfo = 0; /* BUG */
|
addr->v6.sin6_flowinfo = 0; /* BUG */
|
ipv6_addr_copy(&addr->v6.sin6_addr, ¶m->v6.addr);
|
ipv6_addr_copy(&addr->v6.sin6_addr, ¶m->v6.addr);
|
addr->v6.sin6_scope_id = iif;
|
addr->v6.sin6_scope_id = iif;
|
}
|
}
|
|
|
/* Initialize an address parameter from a sctp_addr and return the length
|
/* Initialize an address parameter from a sctp_addr and return the length
|
* of the address parameter.
|
* of the address parameter.
|
*/
|
*/
|
static int sctp_v6_to_addr_param(const union sctp_addr *addr,
|
static int sctp_v6_to_addr_param(const union sctp_addr *addr,
|
union sctp_addr_param *param)
|
union sctp_addr_param *param)
|
{
|
{
|
int length = sizeof(sctp_ipv6addr_param_t);
|
int length = sizeof(sctp_ipv6addr_param_t);
|
|
|
param->v6.param_hdr.type = SCTP_PARAM_IPV6_ADDRESS;
|
param->v6.param_hdr.type = SCTP_PARAM_IPV6_ADDRESS;
|
param->v6.param_hdr.length = ntohs(length);
|
param->v6.param_hdr.length = ntohs(length);
|
ipv6_addr_copy(¶m->v6.addr, &addr->v6.sin6_addr);
|
ipv6_addr_copy(¶m->v6.addr, &addr->v6.sin6_addr);
|
|
|
return length;
|
return length;
|
}
|
}
|
|
|
/* Initialize a sctp_addr from a dst_entry. */
|
/* Initialize a sctp_addr from a dst_entry. */
|
static void sctp_v6_dst_saddr(union sctp_addr *addr, struct dst_entry *dst,
|
static void sctp_v6_dst_saddr(union sctp_addr *addr, struct dst_entry *dst,
|
unsigned short port)
|
unsigned short port)
|
{
|
{
|
struct rt6_info *rt = (struct rt6_info *)dst;
|
struct rt6_info *rt = (struct rt6_info *)dst;
|
addr->sa.sa_family = AF_INET6;
|
addr->sa.sa_family = AF_INET6;
|
addr->v6.sin6_port = port;
|
addr->v6.sin6_port = port;
|
ipv6_addr_copy(&addr->v6.sin6_addr, &rt->rt6i_src.addr);
|
ipv6_addr_copy(&addr->v6.sin6_addr, &rt->rt6i_src.addr);
|
}
|
}
|
|
|
/* Compare addresses exactly.
|
/* Compare addresses exactly.
|
* v4-mapped-v6 is also in consideration.
|
* v4-mapped-v6 is also in consideration.
|
*/
|
*/
|
static int sctp_v6_cmp_addr(const union sctp_addr *addr1,
|
static int sctp_v6_cmp_addr(const union sctp_addr *addr1,
|
const union sctp_addr *addr2)
|
const union sctp_addr *addr2)
|
{
|
{
|
if (addr1->sa.sa_family != addr2->sa.sa_family) {
|
if (addr1->sa.sa_family != addr2->sa.sa_family) {
|
if (addr1->sa.sa_family == AF_INET &&
|
if (addr1->sa.sa_family == AF_INET &&
|
addr2->sa.sa_family == AF_INET6 &&
|
addr2->sa.sa_family == AF_INET6 &&
|
IPV6_ADDR_MAPPED == ipv6_addr_type(&addr2->v6.sin6_addr)) {
|
IPV6_ADDR_MAPPED == ipv6_addr_type(&addr2->v6.sin6_addr)) {
|
if (addr2->v6.sin6_port == addr1->v4.sin_port &&
|
if (addr2->v6.sin6_port == addr1->v4.sin_port &&
|
addr2->v6.sin6_addr.s6_addr32[3] ==
|
addr2->v6.sin6_addr.s6_addr32[3] ==
|
addr1->v4.sin_addr.s_addr)
|
addr1->v4.sin_addr.s_addr)
|
return 1;
|
return 1;
|
}
|
}
|
if (addr2->sa.sa_family == AF_INET &&
|
if (addr2->sa.sa_family == AF_INET &&
|
addr1->sa.sa_family == AF_INET6 &&
|
addr1->sa.sa_family == AF_INET6 &&
|
IPV6_ADDR_MAPPED == ipv6_addr_type(&addr1->v6.sin6_addr)) {
|
IPV6_ADDR_MAPPED == ipv6_addr_type(&addr1->v6.sin6_addr)) {
|
if (addr1->v6.sin6_port == addr2->v4.sin_port &&
|
if (addr1->v6.sin6_port == addr2->v4.sin_port &&
|
addr1->v6.sin6_addr.s6_addr32[3] ==
|
addr1->v6.sin6_addr.s6_addr32[3] ==
|
addr2->v4.sin_addr.s_addr)
|
addr2->v4.sin_addr.s_addr)
|
return 1;
|
return 1;
|
}
|
}
|
return 0;
|
return 0;
|
}
|
}
|
if (ipv6_addr_cmp(&addr1->v6.sin6_addr, &addr2->v6.sin6_addr))
|
if (ipv6_addr_cmp(&addr1->v6.sin6_addr, &addr2->v6.sin6_addr))
|
return 0;
|
return 0;
|
/* If this is a linklocal address, compare the scope_id. */
|
/* If this is a linklocal address, compare the scope_id. */
|
if (ipv6_addr_type(&addr1->v6.sin6_addr) & IPV6_ADDR_LINKLOCAL) {
|
if (ipv6_addr_type(&addr1->v6.sin6_addr) & IPV6_ADDR_LINKLOCAL) {
|
if (addr1->v6.sin6_scope_id && addr2->v6.sin6_scope_id &&
|
if (addr1->v6.sin6_scope_id && addr2->v6.sin6_scope_id &&
|
(addr1->v6.sin6_scope_id != addr2->v6.sin6_scope_id)) {
|
(addr1->v6.sin6_scope_id != addr2->v6.sin6_scope_id)) {
|
return 0;
|
return 0;
|
}
|
}
|
}
|
}
|
|
|
return 1;
|
return 1;
|
}
|
}
|
|
|
/* Initialize addr struct to INADDR_ANY. */
|
/* Initialize addr struct to INADDR_ANY. */
|
static void sctp_v6_inaddr_any(union sctp_addr *addr, unsigned short port)
|
static void sctp_v6_inaddr_any(union sctp_addr *addr, unsigned short port)
|
{
|
{
|
memset(addr, 0x00, sizeof(union sctp_addr));
|
memset(addr, 0x00, sizeof(union sctp_addr));
|
addr->v6.sin6_family = AF_INET6;
|
addr->v6.sin6_family = AF_INET6;
|
addr->v6.sin6_port = port;
|
addr->v6.sin6_port = port;
|
}
|
}
|
|
|
/* Is this a wildcard address? */
|
/* Is this a wildcard address? */
|
static int sctp_v6_is_any(const union sctp_addr *addr)
|
static int sctp_v6_is_any(const union sctp_addr *addr)
|
{
|
{
|
int type;
|
int type;
|
type = ipv6_addr_type((struct in6_addr *)&addr->v6.sin6_addr);
|
type = ipv6_addr_type((struct in6_addr *)&addr->v6.sin6_addr);
|
return IPV6_ADDR_ANY == type;
|
return IPV6_ADDR_ANY == type;
|
}
|
}
|
|
|
/* Should this be available for binding? */
|
/* Should this be available for binding? */
|
static int sctp_v6_available(union sctp_addr *addr, struct sctp_opt *sp)
|
static int sctp_v6_available(union sctp_addr *addr, struct sctp_opt *sp)
|
{
|
{
|
int type;
|
int type;
|
struct in6_addr *in6 = (struct in6_addr *)&addr->v6.sin6_addr;
|
struct in6_addr *in6 = (struct in6_addr *)&addr->v6.sin6_addr;
|
|
|
type = ipv6_addr_type(in6);
|
type = ipv6_addr_type(in6);
|
if (IPV6_ADDR_ANY == type)
|
if (IPV6_ADDR_ANY == type)
|
return 1;
|
return 1;
|
if (type == IPV6_ADDR_MAPPED) {
|
if (type == IPV6_ADDR_MAPPED) {
|
if (sp && !sp->v4mapped)
|
if (sp && !sp->v4mapped)
|
return 0;
|
return 0;
|
if (sp && ipv6_only_sock(sctp_opt2sk(sp)))
|
if (sp && ipv6_only_sock(sctp_opt2sk(sp)))
|
return 0;
|
return 0;
|
sctp_v6_map_v4(addr);
|
sctp_v6_map_v4(addr);
|
return sctp_get_af_specific(AF_INET)->available(addr, sp);
|
return sctp_get_af_specific(AF_INET)->available(addr, sp);
|
}
|
}
|
if (!(type & IPV6_ADDR_UNICAST))
|
if (!(type & IPV6_ADDR_UNICAST))
|
return 0;
|
return 0;
|
|
|
return ipv6_chk_addr(in6, NULL);
|
return ipv6_chk_addr(in6, NULL);
|
}
|
}
|
|
|
/* This function checks if the address is a valid address to be used for
|
/* This function checks if the address is a valid address to be used for
|
* SCTP.
|
* SCTP.
|
*
|
*
|
* Output:
|
* Output:
|
* Return 0 - If the address is a non-unicast or an illegal address.
|
* Return 0 - If the address is a non-unicast or an illegal address.
|
* Return 1 - If the address is a unicast.
|
* Return 1 - If the address is a unicast.
|
*/
|
*/
|
static int sctp_v6_addr_valid(union sctp_addr *addr, struct sctp_opt *sp)
|
static int sctp_v6_addr_valid(union sctp_addr *addr, struct sctp_opt *sp)
|
{
|
{
|
int ret = ipv6_addr_type(&addr->v6.sin6_addr);
|
int ret = ipv6_addr_type(&addr->v6.sin6_addr);
|
|
|
/* Support v4-mapped-v6 address. */
|
/* Support v4-mapped-v6 address. */
|
if (ret == IPV6_ADDR_MAPPED) {
|
if (ret == IPV6_ADDR_MAPPED) {
|
/* Note: This routine is used in input, so v4-mapped-v6
|
/* Note: This routine is used in input, so v4-mapped-v6
|
* are disallowed here when there is no sctp_opt.
|
* are disallowed here when there is no sctp_opt.
|
*/
|
*/
|
if (!sp || !sp->v4mapped)
|
if (!sp || !sp->v4mapped)
|
return 0;
|
return 0;
|
if (sp && ipv6_only_sock(sctp_opt2sk(sp)))
|
if (sp && ipv6_only_sock(sctp_opt2sk(sp)))
|
return 0;
|
return 0;
|
sctp_v6_map_v4(addr);
|
sctp_v6_map_v4(addr);
|
return sctp_get_af_specific(AF_INET)->addr_valid(addr, sp);
|
return sctp_get_af_specific(AF_INET)->addr_valid(addr, sp);
|
}
|
}
|
|
|
/* Is this a non-unicast address */
|
/* Is this a non-unicast address */
|
if (!(ret & IPV6_ADDR_UNICAST))
|
if (!(ret & IPV6_ADDR_UNICAST))
|
return 0;
|
return 0;
|
|
|
return 1;
|
return 1;
|
}
|
}
|
|
|
/* What is the scope of 'addr'? */
|
/* What is the scope of 'addr'? */
|
static sctp_scope_t sctp_v6_scope(union sctp_addr *addr)
|
static sctp_scope_t sctp_v6_scope(union sctp_addr *addr)
|
{
|
{
|
int v6scope;
|
int v6scope;
|
sctp_scope_t retval;
|
sctp_scope_t retval;
|
|
|
/* The IPv6 scope is really a set of bit fields.
|
/* The IPv6 scope is really a set of bit fields.
|
* See IFA_* in <net/if_inet6.h>. Map to a generic SCTP scope.
|
* See IFA_* in <net/if_inet6.h>. Map to a generic SCTP scope.
|
*/
|
*/
|
|
|
v6scope = ipv6_addr_scope(&addr->v6.sin6_addr);
|
v6scope = ipv6_addr_scope(&addr->v6.sin6_addr);
|
switch (v6scope) {
|
switch (v6scope) {
|
case IFA_HOST:
|
case IFA_HOST:
|
retval = SCTP_SCOPE_LOOPBACK;
|
retval = SCTP_SCOPE_LOOPBACK;
|
break;
|
break;
|
case IFA_LINK:
|
case IFA_LINK:
|
retval = SCTP_SCOPE_LINK;
|
retval = SCTP_SCOPE_LINK;
|
break;
|
break;
|
case IFA_SITE:
|
case IFA_SITE:
|
retval = SCTP_SCOPE_PRIVATE;
|
retval = SCTP_SCOPE_PRIVATE;
|
break;
|
break;
|
default:
|
default:
|
retval = SCTP_SCOPE_GLOBAL;
|
retval = SCTP_SCOPE_GLOBAL;
|
break;
|
break;
|
};
|
};
|
|
|
return retval;
|
return retval;
|
}
|
}
|
|
|
/* Create and initialize a new sk for the socket to be returned by accept(). */
|
/* Create and initialize a new sk for the socket to be returned by accept(). */
|
struct sock *sctp_v6_create_accept_sk(struct sock *sk,
|
struct sock *sctp_v6_create_accept_sk(struct sock *sk,
|
struct sctp_association *asoc)
|
struct sctp_association *asoc)
|
{
|
{
|
struct sock *newsk;
|
struct sock *newsk;
|
struct inet_opt *newinet;
|
struct inet_opt *newinet;
|
struct ipv6_pinfo *newnp, *np = inet6_sk(sk);
|
struct ipv6_pinfo *newnp, *np = inet6_sk(sk);
|
|
|
newsk = sk_alloc(PF_INET6, GFP_KERNEL, sizeof(struct sock));
|
newsk = sk_alloc(PF_INET6, GFP_KERNEL, sizeof(struct sock));
|
if (!newsk)
|
if (!newsk)
|
goto out;
|
goto out;
|
|
|
sock_init_data(NULL, newsk);
|
sock_init_data(NULL, newsk);
|
sk_set_owner(newsk, THIS_MODULE);
|
sk_set_owner(newsk, THIS_MODULE);
|
|
|
newsk->sk_type = SOCK_STREAM;
|
newsk->sk_type = SOCK_STREAM;
|
|
|
newsk->sk_prot = sk->sk_prot;
|
newsk->sk_prot = sk->sk_prot;
|
newsk->sk_no_check = sk->sk_no_check;
|
newsk->sk_no_check = sk->sk_no_check;
|
newsk->sk_reuse = sk->sk_reuse;
|
newsk->sk_reuse = sk->sk_reuse;
|
|
|
newsk->sk_destruct = inet_sock_destruct;
|
newsk->sk_destruct = inet_sock_destruct;
|
newsk->sk_zapped = 0;
|
newsk->sk_zapped = 0;
|
newsk->sk_family = PF_INET6;
|
newsk->sk_family = PF_INET6;
|
newsk->sk_protocol = IPPROTO_SCTP;
|
newsk->sk_protocol = IPPROTO_SCTP;
|
newsk->sk_backlog_rcv = sk->sk_prot->backlog_rcv;
|
newsk->sk_backlog_rcv = sk->sk_prot->backlog_rcv;
|
newsk->sk_shutdown = sk->sk_shutdown;
|
newsk->sk_shutdown = sk->sk_shutdown;
|
|
|
newinet = inet_sk(newsk);
|
newinet = inet_sk(newsk);
|
newnp = inet6_sk(newsk);
|
newnp = inet6_sk(newsk);
|
|
|
memcpy(newnp, np, sizeof(struct ipv6_pinfo));
|
memcpy(newnp, np, sizeof(struct ipv6_pinfo));
|
|
|
/* Initialize sk's sport, dport, rcv_saddr and daddr for getsockname()
|
/* Initialize sk's sport, dport, rcv_saddr and daddr for getsockname()
|
* and getpeername().
|
* and getpeername().
|
*/
|
*/
|
newsk->sport = sk->sport;
|
newsk->sport = sk->sport;
|
newsk->saddr = sk->saddr;
|
newsk->saddr = sk->saddr;
|
newnp->rcv_saddr = np->rcv_saddr;
|
newnp->rcv_saddr = np->rcv_saddr;
|
newsk->dport = htons(asoc->peer.port);
|
newsk->dport = htons(asoc->peer.port);
|
sctp_v6_to_sk_daddr(&asoc->peer.primary_addr, newsk);
|
sctp_v6_to_sk_daddr(&asoc->peer.primary_addr, newsk);
|
|
|
/* Init the ipv4 part of the socket since we can have sockets
|
/* Init the ipv4 part of the socket since we can have sockets
|
* using v6 API for ipv4.
|
* using v6 API for ipv4.
|
*/
|
*/
|
newinet->ttl = sysctl_ip_default_ttl;
|
newinet->ttl = sysctl_ip_default_ttl;
|
newinet->mc_loop = 1;
|
newinet->mc_loop = 1;
|
newinet->mc_ttl = 1;
|
newinet->mc_ttl = 1;
|
newinet->mc_index = 0;
|
newinet->mc_index = 0;
|
newinet->mc_list = NULL;
|
newinet->mc_list = NULL;
|
|
|
if (ipv4_config.no_pmtu_disc)
|
if (ipv4_config.no_pmtu_disc)
|
newinet->pmtudisc = IP_PMTUDISC_DONT;
|
newinet->pmtudisc = IP_PMTUDISC_DONT;
|
else
|
else
|
newinet->pmtudisc = IP_PMTUDISC_WANT;
|
newinet->pmtudisc = IP_PMTUDISC_WANT;
|
|
|
#ifdef INET_REFCNT_DEBUG
|
#ifdef INET_REFCNT_DEBUG
|
atomic_inc(&inet6_sock_nr);
|
atomic_inc(&inet6_sock_nr);
|
atomic_inc(&inet_sock_nr);
|
atomic_inc(&inet_sock_nr);
|
#endif
|
#endif
|
|
|
if (newsk->sk_prot->init(newsk)) {
|
if (newsk->sk_prot->init(newsk)) {
|
inet_sock_release(newsk);
|
inet_sock_release(newsk);
|
newsk = NULL;
|
newsk = NULL;
|
}
|
}
|
|
|
out:
|
out:
|
return newsk;
|
return newsk;
|
}
|
}
|
|
|
/* Map v4 address to mapped v6 address */
|
/* Map v4 address to mapped v6 address */
|
static void sctp_v6_addr_v4map(struct sctp_opt *sp, union sctp_addr *addr)
|
static void sctp_v6_addr_v4map(struct sctp_opt *sp, union sctp_addr *addr)
|
{
|
{
|
if (sp->v4mapped && AF_INET == addr->sa.sa_family)
|
if (sp->v4mapped && AF_INET == addr->sa.sa_family)
|
sctp_v4_map_v6(addr);
|
sctp_v4_map_v6(addr);
|
}
|
}
|
|
|
/* Where did this skb come from? */
|
/* Where did this skb come from? */
|
static int sctp_v6_skb_iif(const struct sk_buff *skb)
|
static int sctp_v6_skb_iif(const struct sk_buff *skb)
|
{
|
{
|
struct inet6_skb_parm *opt = (struct inet6_skb_parm *) skb->cb;
|
struct inet6_skb_parm *opt = (struct inet6_skb_parm *) skb->cb;
|
return opt->iif;
|
return opt->iif;
|
}
|
}
|
|
|
/* Was this packet marked by Explicit Congestion Notification? */
|
/* Was this packet marked by Explicit Congestion Notification? */
|
static int sctp_v6_is_ce(const struct sk_buff *skb)
|
static int sctp_v6_is_ce(const struct sk_buff *skb)
|
{
|
{
|
return *((__u32 *)(skb->nh.ipv6h)) & htonl(1<<20);
|
return *((__u32 *)(skb->nh.ipv6h)) & htonl(1<<20);
|
}
|
}
|
|
|
/* Dump the v6 addr to the seq file. */
|
/* Dump the v6 addr to the seq file. */
|
static void sctp_v6_seq_dump_addr(struct seq_file *seq, union sctp_addr *addr)
|
static void sctp_v6_seq_dump_addr(struct seq_file *seq, union sctp_addr *addr)
|
{
|
{
|
seq_printf(seq, "%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x ",
|
seq_printf(seq, "%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x ",
|
NIP6(&addr->v6.sin6_addr));
|
NIP6(&addr->v6.sin6_addr));
|
}
|
}
|
|
|
/* Initialize a PF_INET6 socket msg_name. */
|
/* Initialize a PF_INET6 socket msg_name. */
|
static void sctp_inet6_msgname(char *msgname, int *addr_len)
|
static void sctp_inet6_msgname(char *msgname, int *addr_len)
|
{
|
{
|
struct sockaddr_in6 *sin6;
|
struct sockaddr_in6 *sin6;
|
|
|
sin6 = (struct sockaddr_in6 *)msgname;
|
sin6 = (struct sockaddr_in6 *)msgname;
|
sin6->sin6_family = AF_INET6;
|
sin6->sin6_family = AF_INET6;
|
sin6->sin6_flowinfo = 0;
|
sin6->sin6_flowinfo = 0;
|
sin6->sin6_scope_id = 0; /*FIXME */
|
sin6->sin6_scope_id = 0; /*FIXME */
|
*addr_len = sizeof(struct sockaddr_in6);
|
*addr_len = sizeof(struct sockaddr_in6);
|
}
|
}
|
|
|
/* Initialize a PF_INET msgname from a ulpevent. */
|
/* Initialize a PF_INET msgname from a ulpevent. */
|
static void sctp_inet6_event_msgname(struct sctp_ulpevent *event,
|
static void sctp_inet6_event_msgname(struct sctp_ulpevent *event,
|
char *msgname, int *addrlen)
|
char *msgname, int *addrlen)
|
{
|
{
|
struct sockaddr_in6 *sin6, *sin6from;
|
struct sockaddr_in6 *sin6, *sin6from;
|
|
|
if (msgname) {
|
if (msgname) {
|
union sctp_addr *addr;
|
union sctp_addr *addr;
|
struct sctp_association *asoc;
|
struct sctp_association *asoc;
|
|
|
asoc = event->sndrcvinfo.sinfo_assoc_id;
|
asoc = event->sndrcvinfo.sinfo_assoc_id;
|
sctp_inet6_msgname(msgname, addrlen);
|
sctp_inet6_msgname(msgname, addrlen);
|
sin6 = (struct sockaddr_in6 *)msgname;
|
sin6 = (struct sockaddr_in6 *)msgname;
|
sin6->sin6_port = htons(asoc->peer.port);
|
sin6->sin6_port = htons(asoc->peer.port);
|
addr = &asoc->peer.primary_addr;
|
addr = &asoc->peer.primary_addr;
|
|
|
/* Note: If we go to a common v6 format, this code
|
/* Note: If we go to a common v6 format, this code
|
* will change.
|
* will change.
|
*/
|
*/
|
|
|
/* Map ipv4 address into v4-mapped-on-v6 address. */
|
/* Map ipv4 address into v4-mapped-on-v6 address. */
|
if (sctp_sk(asoc->base.sk)->v4mapped &&
|
if (sctp_sk(asoc->base.sk)->v4mapped &&
|
AF_INET == addr->sa.sa_family) {
|
AF_INET == addr->sa.sa_family) {
|
sctp_v4_map_v6((union sctp_addr *)sin6);
|
sctp_v4_map_v6((union sctp_addr *)sin6);
|
sin6->sin6_addr.s6_addr32[3] =
|
sin6->sin6_addr.s6_addr32[3] =
|
addr->v4.sin_addr.s_addr;
|
addr->v4.sin_addr.s_addr;
|
return;
|
return;
|
}
|
}
|
|
|
sin6from = &asoc->peer.primary_addr.v6;
|
sin6from = &asoc->peer.primary_addr.v6;
|
ipv6_addr_copy(&sin6->sin6_addr, &sin6from->sin6_addr);
|
ipv6_addr_copy(&sin6->sin6_addr, &sin6from->sin6_addr);
|
if (ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL)
|
if (ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL)
|
sin6->sin6_scope_id = sin6from->sin6_scope_id;
|
sin6->sin6_scope_id = sin6from->sin6_scope_id;
|
}
|
}
|
}
|
}
|
|
|
/* Initialize a msg_name from an inbound skb. */
|
/* Initialize a msg_name from an inbound skb. */
|
static void sctp_inet6_skb_msgname(struct sk_buff *skb, char *msgname,
|
static void sctp_inet6_skb_msgname(struct sk_buff *skb, char *msgname,
|
int *addr_len)
|
int *addr_len)
|
{
|
{
|
struct sctphdr *sh;
|
struct sctphdr *sh;
|
struct sockaddr_in6 *sin6;
|
struct sockaddr_in6 *sin6;
|
|
|
if (msgname) {
|
if (msgname) {
|
sctp_inet6_msgname(msgname, addr_len);
|
sctp_inet6_msgname(msgname, addr_len);
|
sin6 = (struct sockaddr_in6 *)msgname;
|
sin6 = (struct sockaddr_in6 *)msgname;
|
sh = (struct sctphdr *)skb->h.raw;
|
sh = (struct sctphdr *)skb->h.raw;
|
sin6->sin6_port = sh->source;
|
sin6->sin6_port = sh->source;
|
|
|
/* Map ipv4 address into v4-mapped-on-v6 address. */
|
/* Map ipv4 address into v4-mapped-on-v6 address. */
|
if (sctp_sk(skb->sk)->v4mapped &&
|
if (sctp_sk(skb->sk)->v4mapped &&
|
skb->nh.iph->version == 4) {
|
skb->nh.iph->version == 4) {
|
sctp_v4_map_v6((union sctp_addr *)sin6);
|
sctp_v4_map_v6((union sctp_addr *)sin6);
|
sin6->sin6_addr.s6_addr32[3] = skb->nh.iph->saddr;
|
sin6->sin6_addr.s6_addr32[3] = skb->nh.iph->saddr;
|
return;
|
return;
|
}
|
}
|
|
|
/* Otherwise, just copy the v6 address. */
|
/* Otherwise, just copy the v6 address. */
|
ipv6_addr_copy(&sin6->sin6_addr, &skb->nh.ipv6h->saddr);
|
ipv6_addr_copy(&sin6->sin6_addr, &skb->nh.ipv6h->saddr);
|
if (ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL) {
|
if (ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL) {
|
struct sctp_ulpevent *ev = sctp_skb2event(skb);
|
struct sctp_ulpevent *ev = sctp_skb2event(skb);
|
sin6->sin6_scope_id = ev->iif;
|
sin6->sin6_scope_id = ev->iif;
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
/* Do we support this AF? */
|
/* Do we support this AF? */
|
static int sctp_inet6_af_supported(sa_family_t family, struct sctp_opt *sp)
|
static int sctp_inet6_af_supported(sa_family_t family, struct sctp_opt *sp)
|
{
|
{
|
switch (family) {
|
switch (family) {
|
case AF_INET6:
|
case AF_INET6:
|
return 1;
|
return 1;
|
/* v4-mapped-v6 addresses */
|
/* v4-mapped-v6 addresses */
|
case AF_INET:
|
case AF_INET:
|
if (!__ipv6_only_sock(sctp_opt2sk(sp)) && sp->v4mapped)
|
if (!__ipv6_only_sock(sctp_opt2sk(sp)) && sp->v4mapped)
|
return 1;
|
return 1;
|
default:
|
default:
|
return 0;
|
return 0;
|
}
|
}
|
}
|
}
|
|
|
/* Address matching with wildcards allowed. This extra level
|
/* Address matching with wildcards allowed. This extra level
|
* of indirection lets us choose whether a PF_INET6 should
|
* of indirection lets us choose whether a PF_INET6 should
|
* disallow any v4 addresses if we so choose.
|
* disallow any v4 addresses if we so choose.
|
*/
|
*/
|
static int sctp_inet6_cmp_addr(const union sctp_addr *addr1,
|
static int sctp_inet6_cmp_addr(const union sctp_addr *addr1,
|
const union sctp_addr *addr2,
|
const union sctp_addr *addr2,
|
struct sctp_opt *opt)
|
struct sctp_opt *opt)
|
{
|
{
|
struct sctp_af *af1, *af2;
|
struct sctp_af *af1, *af2;
|
|
|
af1 = sctp_get_af_specific(addr1->sa.sa_family);
|
af1 = sctp_get_af_specific(addr1->sa.sa_family);
|
af2 = sctp_get_af_specific(addr2->sa.sa_family);
|
af2 = sctp_get_af_specific(addr2->sa.sa_family);
|
|
|
if (!af1 || !af2)
|
if (!af1 || !af2)
|
return 0;
|
return 0;
|
/* Today, wildcard AF_INET/AF_INET6. */
|
/* Today, wildcard AF_INET/AF_INET6. */
|
if (sctp_is_any(addr1) || sctp_is_any(addr2))
|
if (sctp_is_any(addr1) || sctp_is_any(addr2))
|
return 1;
|
return 1;
|
|
|
if (addr1->sa.sa_family != addr2->sa.sa_family)
|
if (addr1->sa.sa_family != addr2->sa.sa_family)
|
return 0;
|
return 0;
|
|
|
return af1->cmp_addr(addr1, addr2);
|
return af1->cmp_addr(addr1, addr2);
|
}
|
}
|
|
|
/* Verify that the provided sockaddr looks bindable. Common verification,
|
/* Verify that the provided sockaddr looks bindable. Common verification,
|
* has already been taken care of.
|
* has already been taken care of.
|
*/
|
*/
|
static int sctp_inet6_bind_verify(struct sctp_opt *opt, union sctp_addr *addr)
|
static int sctp_inet6_bind_verify(struct sctp_opt *opt, union sctp_addr *addr)
|
{
|
{
|
struct sctp_af *af;
|
struct sctp_af *af;
|
|
|
/* ASSERT: address family has already been verified. */
|
/* ASSERT: address family has already been verified. */
|
if (addr->sa.sa_family != AF_INET6)
|
if (addr->sa.sa_family != AF_INET6)
|
af = sctp_get_af_specific(addr->sa.sa_family);
|
af = sctp_get_af_specific(addr->sa.sa_family);
|
else {
|
else {
|
struct sock *sk;
|
struct sock *sk;
|
int type = ipv6_addr_type(&addr->v6.sin6_addr);
|
int type = ipv6_addr_type(&addr->v6.sin6_addr);
|
sk = sctp_opt2sk(opt);
|
sk = sctp_opt2sk(opt);
|
if (type & IPV6_ADDR_LINKLOCAL) {
|
if (type & IPV6_ADDR_LINKLOCAL) {
|
/* Note: Behavior similar to af_inet6.c:
|
/* Note: Behavior similar to af_inet6.c:
|
* 1) Overrides previous bound_dev_if
|
* 1) Overrides previous bound_dev_if
|
* 2) Destructive even if bind isn't successful.
|
* 2) Destructive even if bind isn't successful.
|
*/
|
*/
|
|
|
if (addr->v6.sin6_scope_id)
|
if (addr->v6.sin6_scope_id)
|
sk->sk_bound_dev_if = addr->v6.sin6_scope_id;
|
sk->sk_bound_dev_if = addr->v6.sin6_scope_id;
|
if (!sk->sk_bound_dev_if)
|
if (!sk->sk_bound_dev_if)
|
return 0;
|
return 0;
|
}
|
}
|
af = opt->pf->af;
|
af = opt->pf->af;
|
}
|
}
|
return af->available(addr, opt);
|
return af->available(addr, opt);
|
}
|
}
|
|
|
/* Verify that the provided sockaddr looks bindable. Common verification,
|
/* Verify that the provided sockaddr looks bindable. Common verification,
|
* has already been taken care of.
|
* has already been taken care of.
|
*/
|
*/
|
static int sctp_inet6_send_verify(struct sctp_opt *opt, union sctp_addr *addr)
|
static int sctp_inet6_send_verify(struct sctp_opt *opt, union sctp_addr *addr)
|
{
|
{
|
struct sctp_af *af = NULL;
|
struct sctp_af *af = NULL;
|
|
|
/* ASSERT: address family has already been verified. */
|
/* ASSERT: address family has already been verified. */
|
if (addr->sa.sa_family != AF_INET6)
|
if (addr->sa.sa_family != AF_INET6)
|
af = sctp_get_af_specific(addr->sa.sa_family);
|
af = sctp_get_af_specific(addr->sa.sa_family);
|
else {
|
else {
|
struct sock *sk;
|
struct sock *sk;
|
int type = ipv6_addr_type(&addr->v6.sin6_addr);
|
int type = ipv6_addr_type(&addr->v6.sin6_addr);
|
sk = sctp_opt2sk(opt);
|
sk = sctp_opt2sk(opt);
|
if (type & IPV6_ADDR_LINKLOCAL) {
|
if (type & IPV6_ADDR_LINKLOCAL) {
|
/* Note: Behavior similar to af_inet6.c:
|
/* Note: Behavior similar to af_inet6.c:
|
* 1) Overrides previous bound_dev_if
|
* 1) Overrides previous bound_dev_if
|
* 2) Destructive even if bind isn't successful.
|
* 2) Destructive even if bind isn't successful.
|
*/
|
*/
|
|
|
if (addr->v6.sin6_scope_id)
|
if (addr->v6.sin6_scope_id)
|
sk->sk_bound_dev_if = addr->v6.sin6_scope_id;
|
sk->sk_bound_dev_if = addr->v6.sin6_scope_id;
|
if (!sk->sk_bound_dev_if)
|
if (!sk->sk_bound_dev_if)
|
return 0;
|
return 0;
|
}
|
}
|
af = opt->pf->af;
|
af = opt->pf->af;
|
}
|
}
|
|
|
return af != NULL;
|
return af != NULL;
|
}
|
}
|
|
|
/* Fill in Supported Address Type information for INIT and INIT-ACK
|
/* Fill in Supported Address Type information for INIT and INIT-ACK
|
* chunks. Note: In the future, we may want to look at sock options
|
* chunks. Note: In the future, we may want to look at sock options
|
* to determine whether a PF_INET6 socket really wants to have IPV4
|
* to determine whether a PF_INET6 socket really wants to have IPV4
|
* addresses.
|
* addresses.
|
* Returns number of addresses supported.
|
* Returns number of addresses supported.
|
*/
|
*/
|
static int sctp_inet6_supported_addrs(const struct sctp_opt *opt,
|
static int sctp_inet6_supported_addrs(const struct sctp_opt *opt,
|
__u16 *types)
|
__u16 *types)
|
{
|
{
|
types[0] = SCTP_PARAM_IPV4_ADDRESS;
|
types[0] = SCTP_PARAM_IPV4_ADDRESS;
|
types[1] = SCTP_PARAM_IPV6_ADDRESS;
|
types[1] = SCTP_PARAM_IPV6_ADDRESS;
|
return 2;
|
return 2;
|
}
|
}
|
|
|
static struct proto_ops inet6_seqpacket_ops = {
|
static struct proto_ops inet6_seqpacket_ops = {
|
.family = PF_INET6,
|
.family = PF_INET6,
|
.release = inet6_release,
|
.release = inet6_release,
|
.bind = inet6_bind,
|
.bind = inet6_bind,
|
.connect = inet_dgram_connect,
|
.connect = inet_dgram_connect,
|
.socketpair = sock_no_socketpair,
|
.socketpair = sock_no_socketpair,
|
.accept = inet_accept,
|
.accept = inet_accept,
|
.getname = inet6_getname,
|
.getname = inet6_getname,
|
.poll = sctp_poll,
|
.poll = sctp_poll,
|
.ioctl = inet6_ioctl,
|
.ioctl = inet6_ioctl,
|
.listen = sctp_inet_listen,
|
.listen = sctp_inet_listen,
|
.shutdown = inet_shutdown,
|
.shutdown = inet_shutdown,
|
.setsockopt = inet_setsockopt,
|
.setsockopt = inet_setsockopt,
|
.getsockopt = inet_getsockopt,
|
.getsockopt = inet_getsockopt,
|
.sendmsg = inet_sendmsg,
|
.sendmsg = inet_sendmsg,
|
.recvmsg = inet_recvmsg,
|
.recvmsg = inet_recvmsg,
|
.mmap = sock_no_mmap,
|
.mmap = sock_no_mmap,
|
};
|
};
|
|
|
static struct inet_protosw sctpv6_seqpacket_protosw = {
|
static struct inet_protosw sctpv6_seqpacket_protosw = {
|
.type = SOCK_SEQPACKET,
|
.type = SOCK_SEQPACKET,
|
.protocol = IPPROTO_SCTP,
|
.protocol = IPPROTO_SCTP,
|
.prot = &sctp_prot,
|
.prot = &sctp_prot,
|
.ops = &inet6_seqpacket_ops,
|
.ops = &inet6_seqpacket_ops,
|
.capability = -1,
|
.capability = -1,
|
.no_check = 0,
|
.no_check = 0,
|
.flags = SCTP_PROTOSW_FLAG
|
.flags = SCTP_PROTOSW_FLAG
|
};
|
};
|
static struct inet_protosw sctpv6_stream_protosw = {
|
static struct inet_protosw sctpv6_stream_protosw = {
|
.type = SOCK_STREAM,
|
.type = SOCK_STREAM,
|
.protocol = IPPROTO_SCTP,
|
.protocol = IPPROTO_SCTP,
|
.prot = &sctp_prot,
|
.prot = &sctp_prot,
|
.ops = &inet6_seqpacket_ops,
|
.ops = &inet6_seqpacket_ops,
|
.capability = -1,
|
.capability = -1,
|
.no_check = 0,
|
.no_check = 0,
|
.flags = SCTP_PROTOSW_FLAG,
|
.flags = SCTP_PROTOSW_FLAG,
|
};
|
};
|
|
|
static struct inet6_protocol sctpv6_protocol = {
|
static struct inet6_protocol sctpv6_protocol = {
|
.handler = sctp_rcv,
|
.handler = sctp_rcv,
|
.err_handler = sctp_v6_err,
|
.err_handler = sctp_v6_err,
|
.next = NULL,
|
.next = NULL,
|
.protocol = IPPROTO_SCTP,
|
.protocol = IPPROTO_SCTP,
|
.copy = 0,
|
.copy = 0,
|
.data = NULL,
|
.data = NULL,
|
.name = "SCTPv6",
|
.name = "SCTPv6",
|
};
|
};
|
|
|
static struct sctp_af sctp_ipv6_specific = {
|
static struct sctp_af sctp_ipv6_specific = {
|
.sctp_xmit = sctp_v6_xmit,
|
.sctp_xmit = sctp_v6_xmit,
|
.setsockopt = ipv6_setsockopt,
|
.setsockopt = ipv6_setsockopt,
|
.getsockopt = ipv6_getsockopt,
|
.getsockopt = ipv6_getsockopt,
|
.get_dst = sctp_v6_get_dst,
|
.get_dst = sctp_v6_get_dst,
|
.get_saddr = sctp_v6_get_saddr,
|
.get_saddr = sctp_v6_get_saddr,
|
.copy_addrlist = sctp_v6_copy_addrlist,
|
.copy_addrlist = sctp_v6_copy_addrlist,
|
.from_skb = sctp_v6_from_skb,
|
.from_skb = sctp_v6_from_skb,
|
.from_sk = sctp_v6_from_sk,
|
.from_sk = sctp_v6_from_sk,
|
.to_sk_saddr = sctp_v6_to_sk_saddr,
|
.to_sk_saddr = sctp_v6_to_sk_saddr,
|
.to_sk_daddr = sctp_v6_to_sk_daddr,
|
.to_sk_daddr = sctp_v6_to_sk_daddr,
|
.from_addr_param = sctp_v6_from_addr_param,
|
.from_addr_param = sctp_v6_from_addr_param,
|
.to_addr_param = sctp_v6_to_addr_param,
|
.to_addr_param = sctp_v6_to_addr_param,
|
.dst_saddr = sctp_v6_dst_saddr,
|
.dst_saddr = sctp_v6_dst_saddr,
|
.cmp_addr = sctp_v6_cmp_addr,
|
.cmp_addr = sctp_v6_cmp_addr,
|
.scope = sctp_v6_scope,
|
.scope = sctp_v6_scope,
|
.addr_valid = sctp_v6_addr_valid,
|
.addr_valid = sctp_v6_addr_valid,
|
.inaddr_any = sctp_v6_inaddr_any,
|
.inaddr_any = sctp_v6_inaddr_any,
|
.is_any = sctp_v6_is_any,
|
.is_any = sctp_v6_is_any,
|
.available = sctp_v6_available,
|
.available = sctp_v6_available,
|
.skb_iif = sctp_v6_skb_iif,
|
.skb_iif = sctp_v6_skb_iif,
|
.is_ce = sctp_v6_is_ce,
|
.is_ce = sctp_v6_is_ce,
|
.seq_dump_addr = sctp_v6_seq_dump_addr,
|
.seq_dump_addr = sctp_v6_seq_dump_addr,
|
.net_header_len = sizeof(struct ipv6hdr),
|
.net_header_len = sizeof(struct ipv6hdr),
|
.sockaddr_len = sizeof(struct sockaddr_in6),
|
.sockaddr_len = sizeof(struct sockaddr_in6),
|
.sa_family = AF_INET6,
|
.sa_family = AF_INET6,
|
};
|
};
|
|
|
static struct sctp_pf sctp_pf_inet6_specific = {
|
static struct sctp_pf sctp_pf_inet6_specific = {
|
.event_msgname = sctp_inet6_event_msgname,
|
.event_msgname = sctp_inet6_event_msgname,
|
.skb_msgname = sctp_inet6_skb_msgname,
|
.skb_msgname = sctp_inet6_skb_msgname,
|
.af_supported = sctp_inet6_af_supported,
|
.af_supported = sctp_inet6_af_supported,
|
.cmp_addr = sctp_inet6_cmp_addr,
|
.cmp_addr = sctp_inet6_cmp_addr,
|
.bind_verify = sctp_inet6_bind_verify,
|
.bind_verify = sctp_inet6_bind_verify,
|
.send_verify = sctp_inet6_send_verify,
|
.send_verify = sctp_inet6_send_verify,
|
.supported_addrs = sctp_inet6_supported_addrs,
|
.supported_addrs = sctp_inet6_supported_addrs,
|
.create_accept_sk = sctp_v6_create_accept_sk,
|
.create_accept_sk = sctp_v6_create_accept_sk,
|
.addr_v4map = sctp_v6_addr_v4map,
|
.addr_v4map = sctp_v6_addr_v4map,
|
.af = &sctp_ipv6_specific,
|
.af = &sctp_ipv6_specific,
|
};
|
};
|
|
|
/* Initialize IPv6 support and register with inet6 stack. */
|
/* Initialize IPv6 support and register with inet6 stack. */
|
int sctp_v6_init(void)
|
int sctp_v6_init(void)
|
{
|
{
|
/* Register inet6 protocol. */
|
/* Register inet6 protocol. */
|
inet6_add_protocol(&sctpv6_protocol);
|
inet6_add_protocol(&sctpv6_protocol);
|
|
|
/* Add SCTPv6(UDP and TCP style) to inetsw6 linked list. */
|
/* Add SCTPv6(UDP and TCP style) to inetsw6 linked list. */
|
inet6_register_protosw(&sctpv6_seqpacket_protosw);
|
inet6_register_protosw(&sctpv6_seqpacket_protosw);
|
inet6_register_protosw(&sctpv6_stream_protosw);
|
inet6_register_protosw(&sctpv6_stream_protosw);
|
|
|
/* Register the SCTP specific PF_INET6 functions. */
|
/* Register the SCTP specific PF_INET6 functions. */
|
sctp_register_pf(&sctp_pf_inet6_specific, PF_INET6);
|
sctp_register_pf(&sctp_pf_inet6_specific, PF_INET6);
|
|
|
/* Register the SCTP specific AF_INET6 functions. */
|
/* Register the SCTP specific AF_INET6 functions. */
|
sctp_register_af(&sctp_ipv6_specific);
|
sctp_register_af(&sctp_ipv6_specific);
|
|
|
/* Register notifier for inet6 address additions/deletions. */
|
/* Register notifier for inet6 address additions/deletions. */
|
register_inet6addr_notifier(&sctp_inetaddr_notifier);
|
register_inet6addr_notifier(&sctp_inetaddr_notifier);
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* IPv6 specific exit support. */
|
/* IPv6 specific exit support. */
|
void sctp_v6_exit(void)
|
void sctp_v6_exit(void)
|
{
|
{
|
list_del(&sctp_ipv6_specific.list);
|
list_del(&sctp_ipv6_specific.list);
|
inet6_del_protocol(&sctpv6_protocol);
|
inet6_del_protocol(&sctpv6_protocol);
|
inet6_unregister_protosw(&sctpv6_seqpacket_protosw);
|
inet6_unregister_protosw(&sctpv6_seqpacket_protosw);
|
inet6_unregister_protosw(&sctpv6_stream_protosw);
|
inet6_unregister_protosw(&sctpv6_stream_protosw);
|
unregister_inet6addr_notifier(&sctp_inetaddr_notifier);
|
unregister_inet6addr_notifier(&sctp_inetaddr_notifier);
|
}
|
}
|
|
|
