1 files changed, 103 insertions, 0 deletions
diff --git a/tap-mac/tuntap/src/tap/tap.h b/tap-mac/tuntap/src/tap/tap.h
new file mode 100644
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+++ b/tap-mac/tuntap/src/tap/tap.h
@@ -0,0 +1,103 @@
+/*
+ * ethertap device for MacOSX.
+ */
+/*
+ * Copyright (c) 2011 Mattias Nissler <mattias.nissler@gmx.de>
+ *
+ * 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.
+ */
+
+#ifndef __TAP_H__
+#define __TAP_H__
+
+#include "tuntap.h"
+
+#define TAP_FAMILY_NAME			((char *) "zt")
+
+#define TAP_IF_COUNT			16	/* max number of tap interfaces */
+
+#define TAP_MTU				4000
+
+#define TAP_LLADDR			tap_lladdr
+
+/* the mac address of our interfaces. note that the last byte will be replaced by the unit number */
+extern u_char tap_lladdr[];
+
+/* tap manager */
+class tap_manager : public tuntap_manager {
+
+	protected:
+		/* just define the interface creation method */
+		virtual tuntap_interface *create_interface();
+
+};
+
+/* the tap network interface */
+class tap_interface : public tuntap_interface {
+
+	protected:
+		/* maximum number of protocols that can be attached */
+		static const unsigned int MAX_ATTACHED_PROTOS = 8;
+
+		/* information about attached protocols for demuxing is stored here */
+		struct {
+			/* whether this entry is used */
+			bool used;
+			/* type in the ethernet header */
+			u_int16_t type;
+			/* protocol passed to add_proto */
+			protocol_family_t proto;
+		} attached_protos[MAX_ATTACHED_PROTOS];
+
+		/* initializes the interface */
+		virtual bool initialize(unsigned short major, unsigned short unit);
+
+		/* shuts the interface down */
+		virtual void shutdown();
+
+		/* called when the character device is opened in order to intialize the network
+		 * interface.
+		 */
+		virtual int initialize_interface();
+		/* called when the character device is closed to shutdown the network interface */
+		virtual void shutdown_interface();
+
+		/* override interface routines */
+		virtual errno_t if_ioctl(u_int32_t cmd, void *arg);
+		virtual errno_t if_demux(mbuf_t m, char *header, protocol_family_t *proto);
+		virtual errno_t if_framer(mbuf_t *m, const struct sockaddr *dest,
+				const char *dest_linkaddr, const char *frame_type);
+		virtual errno_t if_add_proto(protocol_family_t proto,
+				const struct ifnet_demux_desc *ddesc, u_int32_t ndesc);
+		virtual errno_t if_del_proto(protocol_family_t proto);
+		virtual errno_t if_check_multi(const struct sockaddr *maddr);
+
+		/* if_add_proto helper */
+		errno_t add_one_proto(protocol_family_t proto, const struct ifnet_demux_desc &dd);
+
+		/* generates a kernel event */
+		void generate_link_event(u_int32_t code);
+
+		friend class tap_manager;
+};
+
+#endif /* __TAP_H__ */
+