1 files changed, 101 insertions, 0 deletions
diff --git a/eth-multiplexer/dev_stat.c b/eth-multiplexer/dev_stat.c
new file mode 100644
index 00000000..43c68d6a
--- /dev/null
+++ b/eth-multiplexer/dev_stat.c
@@ -0,0 +1,101 @@
+ /* 
+  * Mach Operating System
+  * Copyright (c) 1993-1989 Carnegie Mellon University
+  * All Rights Reserved.
+  * 
+  * Permission to use, copy, modify and distribute this software and its
+  * documentation is hereby granted, provided that both the copyright
+  * notice and this permission notice appear in all copies of the
+  * software, derivative works or modified versions, and any portions
+  * thereof, and that both notices appear in supporting documentation.
+  * 
+  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
+  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
+  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+  * 
+  * Carnegie Mellon requests users of this software to return to
+  * 
+  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
+  *  School of Computer Science
+  *  Carnegie Mellon University
+  *  Pittsburgh PA 15213-3890
+  * 
+  * any improvements or extensions that they make and grant Carnegie Mellon
+  * the rights to redistribute these changes.
+  */
+/*
+ *	Author: David B. Golub, Carnegie Mellon University
+ *	Date:	3/98
+ *
+ *	Network IO.
+ *
+ *	Packet filter code taken from vaxif/enet.c written		 
+ *		CMU and Stanford. 
+ */
+
+/* the code copied from device/net_io.c in Mach */
+
+#include <string.h>
+#include <arpa/inet.h>
+
+#include <mach.h>
+
+#include "vdev.h"
+
+io_return_t
+dev_getstat(struct vether_device *ifp, dev_flavor_t flavor,
+		dev_status_t status, natural_t *count)
+{
+	switch (flavor) {
+		case NET_STATUS:
+			{
+				register struct net_status *ns = (struct net_status *)status;
+
+				if (*count < NET_STATUS_COUNT)
+					return (D_INVALID_OPERATION);
+
+				ns->min_packet_size = ifp->if_header_size;
+				ns->max_packet_size = ifp->if_header_size + ifp->if_mtu;
+				ns->header_format = ifp->if_header_format;
+				ns->header_size = ifp->if_header_size;
+				ns->address_size = ifp->if_address_size;
+				ns->flags = ifp->if_flags;
+				ns->mapped_size = 0;
+
+				*count = NET_STATUS_COUNT;
+				break;
+			}
+		case NET_ADDRESS:
+			{
+				register int	addr_byte_count;
+				register int	addr_int_count;
+				register int	i;
+
+				addr_byte_count = ifp->if_address_size;
+				addr_int_count = (addr_byte_count + (sizeof(int)-1))
+					/ sizeof(int);
+
+				if (*count < addr_int_count) {
+					return (D_INVALID_OPERATION);
+				}
+
+				memcpy(status, ifp->if_address, addr_byte_count);
+				if (addr_byte_count < addr_int_count * sizeof(int))
+					memset((char *)status + addr_byte_count, 0, 
+							(addr_int_count * sizeof(int)
+							 - addr_byte_count));
+
+				for (i = 0; i < addr_int_count; i++) {
+					register int word;
+
+					word = status[i];
+					status[i] = htonl(word);
+				}
+				*count = addr_int_count;
+				break;
+			}
+		default:
+			return (D_INVALID_OPERATION);
+	}
+	return (D_SUCCESS);
+}