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[DCCP] ipv6: Add missing ipv6 control socket

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I guess I forgot to add it, nah, now it just works:

18:04:33.274066 IP6 ::1.1476 > ::1.5001: request (service=0)
18:04:33.334482 IP6 ::1.5001 > ::1.1476: reset (code=bad_service_code)

Ditched IP_DCCP_UNLOAD_HACK, as now we would have to do it for both
IPv6 and IPv4, so I'll come up with another way for freeing the
control sockets in upcoming changesets.

Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arnaldo Carvalho de Melo
2006-03-20 22:00:37 -08:00
committed by David S. Miller
parent c25a18ba34
commit 7247887357
6 changed files with 72 additions and 65 deletions
Download Patch File Download Diff File Expand all files Collapse all files

44
net/dccp/ipv6.c
View File

@ -33,6 +33,9 @@
#include "dccp.h"
#include "ipv6.h"
/* Socket used for sending RSTs and ACKs */
static struct socket *dccp_v6_ctl_socket;
static void dccp_v6_ctl_send_reset(struct sk_buff *skb);
static void dccp_v6_reqsk_send_ack(struct sk_buff *skb,
struct request_sock *req);
@ -568,7 +571,7 @@ static void dccp_v6_ctl_send_reset(struct sk_buff *rxskb)
/* sk = NULL, but it is safe for now. RST socket required. */
if (!ip6_dst_lookup(NULL, &skb->dst, &fl)) {
if (xfrm_lookup(&skb->dst, &fl, NULL, 0) >= 0) {
ip6_xmit(NULL, skb, &fl, NULL, 0);
ip6_xmit(dccp_v6_ctl_socket->sk, skb, &fl, NULL, 0);
DCCP_INC_STATS_BH(DCCP_MIB_OUTSEGS);
DCCP_INC_STATS_BH(DCCP_MIB_OUTRSTS);
return;
@ -623,7 +626,7 @@ static void dccp_v6_ctl_send_ack(struct sk_buff *rxskb)
if (!ip6_dst_lookup(NULL, &skb->dst, &fl)) {
if (xfrm_lookup(&skb->dst, &fl, NULL, 0) >= 0) {
ip6_xmit(NULL, skb, &fl, NULL, 0);
ip6_xmit(dccp_v6_ctl_socket->sk, skb, &fl, NULL, 0);
DCCP_INC_STATS_BH(DCCP_MIB_OUTSEGS);
return;
}
@ -1146,10 +1149,14 @@ static struct inet_connection_sock_af_ops dccp_ipv6_mapped = {
*/
static int dccp_v6_init_sock(struct sock *sk)
{
int err = dccp_init_sock(sk);
static __u8 dccp_v6_ctl_sock_initialized;
int err = dccp_init_sock(sk, dccp_v6_ctl_sock_initialized);
if (err == 0)
if (err == 0) {
if (unlikely(!dccp_v6_ctl_sock_initialized))
dccp_v6_ctl_sock_initialized = 1;
inet_csk(sk)->icsk_af_ops = &dccp_ipv6_af_ops;
}
return err;
}
@ -1222,6 +1229,29 @@ static struct inet_protosw dccp_v6_protosw = {
.flags = INET_PROTOSW_ICSK,
};
static char dccp_v6_ctl_socket_err_msg[] __initdata =
KERN_ERR "DCCP: Failed to create the control socket.\n";
static int __init dccp_v6_ctl_sock_init(void)
{
int rc = sock_create_kern(PF_INET6, SOCK_DCCP, IPPROTO_DCCP,
&dccp_v6_ctl_socket);
if (rc < 0)
printk(dccp_v6_ctl_socket_err_msg);
else {
dccp_v6_ctl_socket->sk->sk_allocation = GFP_ATOMIC;
inet_sk(dccp_v6_ctl_socket->sk)->uc_ttl = -1;
/* Unhash it so that IP input processing does not even
* see it, we do not wish this socket to see incoming
* packets.
*/
dccp_v6_ctl_socket->sk->sk_prot->unhash(dccp_v6_ctl_socket->sk);
}
return rc;
}
static int __init dccp_v6_init(void)
{
int err = proto_register(&dccp_v6_prot, 1);
@ -1234,8 +1264,14 @@ static int __init dccp_v6_init(void)
goto out_unregister_proto;
inet6_register_protosw(&dccp_v6_protosw);
if (dccp_v6_ctl_sock_init() != 0)
goto out_unregister_protosw;
out:
return err;
out_unregister_protosw:
inet6_del_protocol(&dccp_v6_protocol, IPPROTO_DCCP);
inet6_unregister_protosw(&dccp_v6_protosw);
out_unregister_proto:
proto_unregister(&dccp_v6_prot);
goto out;