1 files changed, 35 insertions, 1 deletions

diff --git a/net/sctp/sysctl.c b/net/sctp/sysctl.c
index 35c8923b5554..c82fdc1eab7c 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",
@@ -400,6 +403,37 @@ static int proc_sctp_do_rto_max(struct ctl_table *ctl, int write,
         return ret;
 }
 
+static int proc_sctp_do_auth(struct ctl_table *ctl, int write,
+                             void __user *buffer, size_t *lenp,
+                             loff_t *ppos)
+{
+        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 (write)
+                tbl.data = &new_value;
+        else
+                tbl.data = &net->sctp.auth_enable;
+
+        ret = proc_dointvec(&tbl, write, buffer, lenp, ppos);
+
+        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 = sctp_net_table;