1 files changed, 76 insertions, 0 deletions

diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
index a20fcc3ddcd9..01d65bc99b0c 100644
--- a/net/bluetooth/l2cap_sock.c
+++ b/net/bluetooth/l2cap_sock.c
@@ -534,6 +534,41 @@ static int l2cap_sock_getsockopt(struct socket *sock, int level, int optname,
                         err = -EFAULT;
                 break;
 
+        case BT_SNDMTU:
+                if (!enable_lecoc) {
+                        err = -EPROTONOSUPPORT;
+                        break;
+                }
+
+                if (!bdaddr_type_is_le(chan->src_type)) {
+                        err = -EINVAL;
+                        break;
+                }
+
+                if (sk->sk_state != BT_CONNECTED) {
+                        err = -ENOTCONN;
+                        break;
+                }
+
+                if (put_user(chan->omtu, (u16 __user *) optval))
+                        err = -EFAULT;
+                break;
+
+        case BT_RCVMTU:
+                if (!enable_lecoc) {
+                        err = -EPROTONOSUPPORT;
+                        break;
+                }
+
+                if (!bdaddr_type_is_le(chan->src_type)) {
+                        err = -EINVAL;
+                        break;
+                }
+
+                if (put_user(chan->imtu, (u16 __user *) optval))
+                        err = -EFAULT;
+                break;
+
         default:
                 err = -ENOPROTOOPT;
                 break;
@@ -834,6 +869,47 @@ static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname,
 
                 break;
 
+        case BT_SNDMTU:
+                if (!enable_lecoc) {
+                        err = -EPROTONOSUPPORT;
+                        break;
+                }
+
+                if (!bdaddr_type_is_le(chan->src_type)) {
+                        err = -EINVAL;
+                        break;
+                }
+
+                /* Setting is not supported as it's the remote side that
+                 * decides this.
+                 */
+                err = -EPERM;
+                break;
+
+        case BT_RCVMTU:
+                if (!enable_lecoc) {
+                        err = -EPROTONOSUPPORT;
+                        break;
+                }
+
+                if (!bdaddr_type_is_le(chan->src_type)) {
+                        err = -EINVAL;
+                        break;
+                }
+
+                if (sk->sk_state == BT_CONNECTED) {
+                        err = -EISCONN;
+                        break;
+                }
+
+                if (get_user(opt, (u32 __user *) optval)) {
+                        err = -EFAULT;
+                        break;
+                }
+
+                chan->imtu = opt;
+                break;
+
         default:
                 err = -ENOPROTOOPT;
                 break;