Index: head/sys/dev/usb/net/if_iphethvar.h
===================================================================
--- head/sys/dev/usb/net/if_iphethvar.h	(revision 367811)
+++ head/sys/dev/usb/net/if_iphethvar.h	(revision 367812)
@@ -1,86 +1,86 @@
 /* $FreeBSD$ */
 /*-
  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
  *
  * Copyright (c) 2010 Hans Petter Selasky. All rights reserved.
  * Copyright (c) 2009 Diego Giagio. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
 
 /*
  * Thanks to Diego Giagio for figuring out the programming details for
  * the Apple iPhone Ethernet driver.
  */
 
 #ifndef _IF_IPHETHVAR_H_
 #define	_IF_IPHETHVAR_H_
 
 #define	IPHETH_USBINTF_CLASS    255
 #define	IPHETH_USBINTF_SUBCLASS 253
 #define	IPHETH_USBINTF_PROTO    1
 
-#define	IPHETH_BUF_SIZE         1516
+#define	IPHETH_BUF_SIZE         1514
 #define	IPHETH_TX_TIMEOUT       5000	/* ms */
 
 #define	IPHETH_RX_FRAMES_MAX	1
 #define	IPHETH_TX_FRAMES_MAX	8
 
 #define	IPHETH_RX_ADJ		2
 
 #define	IPHETH_CFG_INDEX	0
 #define	IPHETH_IF_INDEX		2
 #define	IPHETH_ALT_INTFNUM      1
 
 #define	IPHETH_CTRL_ENDP        0x00
 #define	IPHETH_CTRL_BUF_SIZE    0x40
 #define	IPHETH_CTRL_TIMEOUT     5000	/* ms */
 
 #define	IPHETH_CMD_GET_MACADDR   0x00
 #define	IPHETH_CMD_CARRIER_CHECK 0x45
 
 #define	IPHETH_CARRIER_ON       0x04
 
 enum {
 	IPHETH_BULK_TX,
 	IPHETH_BULK_RX,
 	IPHETH_N_TRANSFER,
 };
 
 struct ipheth_softc {
 	struct usb_ether sc_ue;
 	struct mtx sc_mtx;
 
 	struct usb_xfer *sc_xfer[IPHETH_N_TRANSFER];
 	struct mbuf *sc_rx_buf[IPHETH_RX_FRAMES_MAX];
 	struct mbuf *sc_tx_buf[IPHETH_TX_FRAMES_MAX];
 
 	uint8_t	sc_data[IPHETH_CTRL_BUF_SIZE];
 	uint8_t	sc_iface_no;
 	uint8_t	sc_carrier_on;
 };
 
 #define	IPHETH_LOCK(_sc)			mtx_lock(&(_sc)->sc_mtx)
 #define	IPHETH_UNLOCK(_sc)		mtx_unlock(&(_sc)->sc_mtx)
 #define	IPHETH_LOCK_ASSERT(_sc, t)	mtx_assert(&(_sc)->sc_mtx, t)
 
 #endif					/* _IF_IPHETHVAR_H_ */