From: Denis V. Lunev <den@openvz.org>
Date: Thu, 3 Apr 2008 21:31:33 +0000 (-0700)
Subject: [NETNS]: Create tcp control socket in the each namespace.
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=046ee902357adc046d041441956ec7eeb30c77c4;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

[NETNS]: Create tcp control socket in the each namespace.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/include/net/netns/ipv4.h b/include/net/netns/ipv4.h
index af685f71f4b5..34ee348a2cf2 100644
--- a/include/net/netns/ipv4.h
+++ b/include/net/netns/ipv4.h
@@ -28,6 +28,7 @@ struct netns_ipv4 {
 	struct sock		*fibnl;
 
 	struct sock		**icmp_sk;
+	struct sock		*tcp_sock;
 
 	struct netns_frags	frags;
 #ifdef CONFIG_NETFILTER
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index dc8c3dc75fe5..1d4a77acdc0b 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -2488,11 +2488,28 @@ struct proto tcp_prot = {
 #endif
 };
 
+
+static int __net_init tcp_sk_init(struct net *net)
+{
+	return inet_ctl_sock_create(&net->ipv4.tcp_sock,
+				    PF_INET, SOCK_RAW, IPPROTO_TCP, net);
+}
+
+static void __net_exit tcp_sk_exit(struct net *net)
+{
+	inet_ctl_sock_destroy(net->ipv4.tcp_sock);
+}
+
+static struct pernet_operations __net_initdata tcp_sk_ops = {
+       .init = tcp_sk_init,
+       .exit = tcp_sk_exit,
+};
+
 void __init tcp_v4_init(void)
 {
-	if (inet_ctl_sock_create(&tcp_sock, PF_INET, SOCK_RAW,
-				 IPPROTO_TCP, &init_net) < 0)
+	if (register_pernet_device(&tcp_sk_ops))
 		panic("Failed to create the TCP control socket.\n");
+	tcp_sock = init_net.ipv4.tcp_sock;
 }
 
 EXPORT_SYMBOL(ipv4_specific);