aboutsummaryrefslogtreecommitdiffstats
path: root/net/dccp/ipv4.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/dccp/ipv4.c')
-rw-r--r--net/dccp/ipv4.c65
1 files changed, 29 insertions, 36 deletions
diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c
index 3fe958eb4bf3..f53bce590ade 100644
--- a/net/dccp/ipv4.c
+++ b/net/dccp/ipv4.c
@@ -32,6 +32,13 @@
#include "dccp.h"
#include "feat.h"
+/*
+ * This is the global socket data structure used for responding to
+ * the Out-of-the-blue (OOTB) packets. A control sock will be created
+ * for this socket at the initialization time.
+ */
+static struct socket *dccp_v4_ctl_socket;
+
static int dccp_v4_get_port(struct sock *sk, const unsigned short snum)
{
return inet_csk_get_port(&dccp_hashinfo, sk, snum,
@@ -226,11 +233,11 @@ static void dccp_v4_ctl_send_ack(struct sk_buff *rxskb)
dccp_hdr_set_ack(dccp_hdr_ack_bits(skb),
DCCP_SKB_CB(rxskb)->dccpd_seq);
- bh_lock_sock(dccp_ctl_socket->sk);
- err = ip_build_and_send_pkt(skb, dccp_ctl_socket->sk,
+ bh_lock_sock(dccp_v4_ctl_socket->sk);
+ err = ip_build_and_send_pkt(skb, dccp_v4_ctl_socket->sk,
rxskb->nh.iph->daddr,
rxskb->nh.iph->saddr, NULL);
- bh_unlock_sock(dccp_ctl_socket->sk);
+ bh_unlock_sock(dccp_v4_ctl_socket->sk);
if (err == NET_XMIT_CN || err == 0) {
DCCP_INC_STATS_BH(DCCP_MIB_OUTSEGS);
@@ -704,7 +711,7 @@ static void dccp_v4_ctl_send_reset(struct sk_buff *rxskb)
if (((struct rtable *)rxskb->dst)->rt_type != RTN_LOCAL)
return;
- dst = dccp_v4_route_skb(dccp_ctl_socket->sk, rxskb);
+ dst = dccp_v4_route_skb(dccp_v4_ctl_socket->sk, rxskb);
if (dst == NULL)
return;
@@ -741,11 +748,11 @@ static void dccp_v4_ctl_send_reset(struct sk_buff *rxskb)
dh->dccph_checksum = dccp_v4_checksum(skb, rxskb->nh.iph->saddr,
rxskb->nh.iph->daddr);
- bh_lock_sock(dccp_ctl_socket->sk);
- err = ip_build_and_send_pkt(skb, dccp_ctl_socket->sk,
+ bh_lock_sock(dccp_v4_ctl_socket->sk);
+ err = ip_build_and_send_pkt(skb, dccp_v4_ctl_socket->sk,
rxskb->nh.iph->daddr,
rxskb->nh.iph->saddr, NULL);
- bh_unlock_sock(dccp_ctl_socket->sk);
+ bh_unlock_sock(dccp_v4_ctl_socket->sk);
if (err == NET_XMIT_CN || err == 0) {
DCCP_INC_STATS_BH(DCCP_MIB_OUTSEGS);
@@ -997,10 +1004,15 @@ static struct inet_connection_sock_af_ops dccp_ipv4_af_ops = {
static int dccp_v4_init_sock(struct sock *sk)
{
- const int err = dccp_init_sock(sk);
+ static __u8 dccp_v4_ctl_sock_initialized;
+ int err = dccp_init_sock(sk, dccp_v4_ctl_sock_initialized);
- if (err == 0)
+ if (err == 0) {
+ if (unlikely(!dccp_v4_ctl_sock_initialized))
+ dccp_v4_ctl_sock_initialized = 1;
inet_csk(sk)->icsk_af_ops = &dccp_ipv4_af_ops;
+ }
+
return err;
}
@@ -1087,48 +1099,29 @@ static struct inet_protosw dccp_v4_protosw = {
.flags = INET_PROTOSW_ICSK,
};
-/*
- * This is the global socket data structure used for responding to
- * the Out-of-the-blue (OOTB) packets. A control sock will be created
- * for this socket at the initialization time.
- */
-struct socket *dccp_ctl_socket;
-
-static char dccp_ctl_socket_err_msg[] __initdata =
+static char dccp_v4_ctl_socket_err_msg[] __initdata =
KERN_ERR "DCCP: Failed to create the control socket.\n";
-static int __init dccp_ctl_sock_init(void)
+static int __init dccp_v4_ctl_sock_init(void)
{
int rc = sock_create_kern(PF_INET, SOCK_DCCP, IPPROTO_DCCP,
- &dccp_ctl_socket);
+ &dccp_v4_ctl_socket);
if (rc < 0)
- printk(dccp_ctl_socket_err_msg);
+ printk(dccp_v4_ctl_socket_err_msg);
else {
- dccp_ctl_socket->sk->sk_allocation = GFP_ATOMIC;
- inet_sk(dccp_ctl_socket->sk)->uc_ttl = -1;
+ dccp_v4_ctl_socket->sk->sk_allocation = GFP_ATOMIC;
+ inet_sk(dccp_v4_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_ctl_socket->sk->sk_prot->unhash(dccp_ctl_socket->sk);
+ dccp_v4_ctl_socket->sk->sk_prot->unhash(dccp_v4_ctl_socket->sk);
}
return rc;
}
-#ifdef CONFIG_IP_DCCP_UNLOAD_HACK
-void dccp_ctl_sock_exit(void)
-{
- if (dccp_ctl_socket != NULL) {
- sock_release(dccp_ctl_socket);
- dccp_ctl_socket = NULL;
- }
-}
-
-EXPORT_SYMBOL_GPL(dccp_ctl_sock_exit);
-#endif
-
static int __init dccp_v4_init(void)
{
int err = proto_register(&dccp_v4_prot, 1);
@@ -1142,7 +1135,7 @@ static int __init dccp_v4_init(void)
inet_register_protosw(&dccp_v4_protosw);
- err = dccp_ctl_sock_init();
+ err = dccp_v4_ctl_sock_init();
if (err)
goto out_unregister_protosw;
out: