1 files changed, 127 insertions, 0 deletions
diff --git a/lwip/src/include/netif/bridgeif.h b/lwip/src/include/netif/bridgeif.h
new file mode 100644
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+++ b/lwip/src/include/netif/bridgeif.h
@@ -0,0 +1,127 @@
+/**
+ * @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_H
+#define LWIP_HDR_NETIF_BRIDGEIF_H
+
+#include "netif/bridgeif_opts.h"
+
+#include "lwip/err.h"
+#include "lwip/prot/ethernet.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct netif;
+
+#if (BRIDGEIF_MAX_PORTS < 0) || (BRIDGEIF_MAX_PORTS >= 64)
+#error BRIDGEIF_MAX_PORTS must be [1..63]
+#elif BRIDGEIF_MAX_PORTS < 8
+typedef u8_t bridgeif_portmask_t;
+#elif BRIDGEIF_MAX_PORTS < 16
+typedef u16_t bridgeif_portmask_t;
+#elif BRIDGEIF_MAX_PORTS < 32
+typedef u32_t bridgeif_portmask_t;
+#elif BRIDGEIF_MAX_PORTS < 64
+typedef u64_t bridgeif_portmask_t;
+#endif
+
+#define BR_FLOOD ((bridgeif_portmask_t)-1)
+
+/** @ingroup bridgeif
+ * Initialisation data for @ref bridgeif_init.
+ * An instance of this type must be passed as parameter 'state' to @ref netif_add
+ * when the bridge is added.
+ */
+typedef struct bridgeif_initdata_s {
+  /** MAC address of the bridge (cannot use the netif's addresses) */
+  struct eth_addr ethaddr;
+  /** Maximum number of ports in the bridge (ports are stored in an array, this
+      influences memory allocated for netif->state of the bridge netif). */
+  u8_t            max_ports;
+  /** Maximum number of dynamic/learning entries in the bridge's forwarding database.
+      In the default implementation, this controls memory consumption only. */
+  u16_t           max_fdb_dynamic_entries;
+  /** Maximum number of static forwarding entries. Influences memory consumption! */
+  u16_t           max_fdb_static_entries;
+} bridgeif_initdata_t;
+
+/** @ingroup bridgeif
+ * Use this for constant initialization of a bridgeif_initdat_t
+ * (ethaddr must be passed as ETH_ADDR())
+ */
+#define BRIDGEIF_INITDATA1(max_ports, max_fdb_dynamic_entries, max_fdb_static_entries, ethaddr) {ethaddr, max_ports, max_fdb_dynamic_entries, max_fdb_static_entries}
+/** @ingroup bridgeif
+ * Use this for constant initialization of a bridgeif_initdat_t
+ * (each byte of ethaddr must be passed)
+ */
+#define BRIDGEIF_INITDATA2(max_ports, max_fdb_dynamic_entries, max_fdb_static_entries, e0, e1, e2, e3, e4, e5) {{e0, e1, e2, e3, e4, e5}, max_ports, max_fdb_dynamic_entries, max_fdb_static_entries}
+
+err_t bridgeif_init(struct netif *netif);
+err_t bridgeif_add_port(struct netif *bridgeif, struct netif *portif);
+err_t bridgeif_fdb_add(struct netif *bridgeif, const struct eth_addr *addr, bridgeif_portmask_t ports);
+err_t bridgeif_fdb_remove(struct netif *bridgeif, const struct eth_addr *addr);
+
+/* FDB interface, can be replaced by own implementation */
+void                bridgeif_fdb_update_src(void *fdb_ptr, struct eth_addr *src_addr, u8_t port_idx);
+bridgeif_portmask_t bridgeif_fdb_get_dst_ports(void *fdb_ptr, struct eth_addr *dst_addr);
+void*               bridgeif_fdb_init(u16_t max_fdb_entries);
+
+#if BRIDGEIF_PORT_NETIFS_OUTPUT_DIRECT
+#ifndef BRIDGEIF_DECL_PROTECT
+/* define bridgeif protection to sys_arch_protect... */
+#include "lwip/sys.h"
+#define BRIDGEIF_DECL_PROTECT(lev)    SYS_ARCH_DECL_PROTECT(lev)
+#define BRIDGEIF_READ_PROTECT(lev)    SYS_ARCH_PROTECT(lev)
+#define BRIDGEIF_READ_UNPROTECT(lev)  SYS_ARCH_UNPROTECT(lev)
+#define BRIDGEIF_WRITE_PROTECT(lev)
+#define BRIDGEIF_WRITE_UNPROTECT(lev)
+#endif
+#else /* BRIDGEIF_PORT_NETIFS_OUTPUT_DIRECT */
+#include "lwip/tcpip.h"
+#define BRIDGEIF_DECL_PROTECT(lev)
+#define BRIDGEIF_READ_PROTECT(lev)
+#define BRIDGEIF_READ_UNPROTECT(lev)
+#define BRIDGEIF_WRITE_PROTECT(lev)
+#define BRIDGEIF_WRITE_UNPROTECT(lev)
+#endif /* BRIDGEIF_PORT_NETIFS_OUTPUT_DIRECT */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LWIP_HDR_NETIF_BRIDGEIF_H */