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diff --git a/lwip/src/include/netif/bridgeif_opts.h b/lwip/src/include/netif/bridgeif_opts.h
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+++ b/lwip/src/include/netif/bridgeif_opts.h
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+/**
+ * @file
+ * lwIP netif implementing an IEEE 802.1D MAC Bridge
+ */
+
+/*
+ * Copyright (c) 2017 Simon Goldschmidt.
+ * 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.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
+ *
+ * This file is part of the lwIP TCP/IP stack.
+ *
+ * Author: Simon Goldschmidt <goldsimon@gmx.de>
+ *
+ */
+
+#ifndef LWIP_HDR_NETIF_BRIDGEIF_OPTS_H
+#define LWIP_HDR_NETIF_BRIDGEIF_OPTS_H
+
+#include "lwip/opt.h"
+
+/**
+ * @defgroup bridgeif_opts Options
+ * @ingroup bridgeif
+ * @{
+ */
+
+/** BRIDGEIF_PORT_NETIFS_OUTPUT_DIRECT==1: set port netif's 'input' function
+ * to call directly into bridgeif code and on top of that, directly call into
+ * the selected forwarding port's 'linkoutput' function.
+ * This means that the bridgeif input/output path is protected from concurrent access
+ * but as well, *all* bridge port netif's drivers must correctly handle concurrent access!
+ * == 0: get into tcpip_thread for every input packet (no multithreading)
+ * ATTENTION: as ==0 relies on tcpip.h, the default depends on NO_SYS setting
+ */
+#ifndef BRIDGEIF_PORT_NETIFS_OUTPUT_DIRECT
+#define BRIDGEIF_PORT_NETIFS_OUTPUT_DIRECT  NO_SYS
+#endif
+
+/** BRIDGEIF_MAX_PORTS: this is used to create a typedef used for forwarding
+ * bit-fields: the number of bits required is this + 1 (for the internal/cpu port)
+ * (63 is the maximum, resulting in an u64_t for the bit mask)
+ * ATTENTION: this controls the maximum number of the implementation only!
+ * The max. number of ports per bridge must still be passed via netif_add parameter!
+ */
+#ifndef BRIDGEIF_MAX_PORTS
+#define BRIDGEIF_MAX_PORTS                  7
+#endif
+
+/** BRIDGEIF_DEBUG: Enable generic debugging in bridgeif.c. */
+#ifndef BRIDGEIF_DEBUG
+#define BRIDGEIF_DEBUG                      LWIP_DBG_OFF
+#endif
+
+/** BRIDGEIF_DEBUG: Enable FDB debugging in bridgeif.c. */
+#ifndef BRIDGEIF_FDB_DEBUG
+#define BRIDGEIF_FDB_DEBUG                  LWIP_DBG_OFF
+#endif
+
+/** BRIDGEIF_DEBUG: Enable forwarding debugging in bridgeif.c. */
+#ifndef BRIDGEIF_FW_DEBUG
+#define BRIDGEIF_FW_DEBUG                   LWIP_DBG_OFF
+#endif
+
+/**
+ * @}
+ */
+
+#endif /* LWIP_HDR_NETIF_BRIDGEIF_OPTS_H */