1 files changed, 45 insertions, 10 deletions

diff --git a/net/sctp/sysctl.c b/net/sctp/sysctl.c
index 35c8923b555..7e5eb755499 100644
--- a/net/sctp/sysctl.c
+++ b/net/sctp/sysctl.c
@@ -64,6 +64,9 @@ static int proc_sctp_do_rto_min(struct ctl_table *ctl, int write,
 static int proc_sctp_do_rto_max(struct ctl_table *ctl, int write,
 				void __user *buffer, size_t *lenp,
 				loff_t *ppos);
+static int proc_sctp_do_auth(struct ctl_table *ctl, int write,
+			     void __user *buffer, size_t *lenp,
+			     loff_t *ppos);
 
 static struct ctl_table sctp_table[] = {
 	{
@@ -266,7 +269,7 @@ static struct ctl_table sctp_net_table[] = {
 		.data		= &init_net.sctp.auth_enable,
 		.maxlen		= sizeof(int),
 		.mode		= 0644,
-		.proc_handler	= proc_dointvec,
+		.proc_handler	= proc_sctp_do_auth,
 	},
 	{
 		.procname	= "addr_scope_policy",
@@ -400,22 +403,54 @@ static int proc_sctp_do_rto_max(struct ctl_table *ctl, int write,
 	return ret;
 }
 
-int sctp_sysctl_net_register(struct net *net)
+static int proc_sctp_do_auth(struct ctl_table *ctl, int write,
+			     void __user *buffer, size_t *lenp,
+			     loff_t *ppos)
 {
-	struct ctl_table *table = sctp_net_table;
+	struct net *net = current->nsproxy->net_ns;
+	struct ctl_table tbl;
+	int new_value, ret;
+
+	memset(&tbl, 0, sizeof(struct ctl_table));
+	tbl.maxlen = sizeof(unsigned int);
 
-	if (!net_eq(net, &init_net)) {
-		int i;
+	if (write)
+		tbl.data = &new_value;
+	else
+		tbl.data = &net->sctp.auth_enable;
 
-		table = kmemdup(sctp_net_table, sizeof(sctp_net_table), GFP_KERNEL);
-		if (!table)
-			return -ENOMEM;
+	ret = proc_dointvec(&tbl, write, buffer, lenp, ppos);
 
-		for (i = 0; table[i].data; i++)
-			table[i].data += (char *)(&net->sctp) - (char *)&init_net.sctp;
+	if (write) {
+		struct sock *sk = net->sctp.ctl_sock;
+
+		net->sctp.auth_enable = new_value;
+		/* Update the value in the control socket */
+		lock_sock(sk);
+		sctp_sk(sk)->ep->auth_enable = new_value;
+		release_sock(sk);
 	}
 
+	return ret;
+}
+
+int sctp_sysctl_net_register(struct net *net)
+{
+	struct ctl_table *table;
+	int i;
+
+	table = kmemdup(sctp_net_table, sizeof(sctp_net_table), GFP_KERNEL);
+	if (!table)
+		return -ENOMEM;
+
+	for (i = 0; table[i].data; i++)
+		table[i].data += (char *)(&net->sctp) - (char *)&init_net.sctp;
+
 	net->sctp.sysctl_header = register_net_sysctl(net, "net/sctp", table);
+	if (net->sctp.sysctl_header == NULL) {
+		kfree(table);
+		return -ENOMEM;
+	}
 	return 0;
 }