Added token ring network support.

1 files changed, 57 insertions, 0 deletions

diff --git a/extract.h b/extract.h
new file mode 100644
index 0000000..120e1a0
--- /dev/null
+++ b/extract.h
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+/*
+ * Copyright (c) 1992, 1993, 1994, 1995, 1996
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that: (1) source code distributions
+ * retain the above copyright notice and this paragraph in its entirety, (2)
+ * distributions including binary code include the above copyright notice and
+ * this paragraph in its entirety in the documentation or other materials
+ * provided with the distribution, and (3) all advertising materials mentioning
+ * features or use of this software display the following acknowledgement:
+ * ``This product includes software developed by the University of California,
+ * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
+ * the University nor the names of its contributors may be used to endorse
+ * or promote products derived from this software without specific prior
+ * written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * @(#) $Header$ (LBL)
+ */
+
+/* Network to host order macros */
+
+#ifdef LBL_ALIGN
+#define EXTRACT_16BITS(p) \
+	((u_int16_t)*((const u_int8_t *)(p) + 0) << 8 | \
+	(u_int16_t)*((const u_int8_t *)(p) + 1))
+#define EXTRACT_32BITS(p) \
+	((u_int32_t)*((const u_int8_t *)(p) + 0) << 24 | \
+	(u_int32_t)*((const u_int8_t *)(p) + 1) << 16 | \
+	(u_int32_t)*((const u_int8_t *)(p) + 2) << 8 | \
+	(u_int32_t)*((const u_int8_t *)(p) + 3))
+#else
+#define EXTRACT_16BITS(p) \
+	((u_int16_t)ntohs(*(const u_int16_t *)(p)))
+#define EXTRACT_32BITS(p) \
+	((u_int32_t)ntohl(*(const u_int32_t *)(p)))
+#endif
+
+#define EXTRACT_24BITS(p) \
+	((u_int32_t)*((const u_int8_t *)(p) + 0) << 16 | \
+	(u_int32_t)*((const u_int8_t *)(p) + 1) << 8 | \
+	(u_int32_t)*((const u_int8_t *)(p) + 2))
+
+/* Little endian protocol host order macros */
+
+#define EXTRACT_LE_8BITS(p) (*(p))
+#define EXTRACT_LE_16BITS(p) \
+	((u_int16_t)*((const u_int8_t *)(p) + 1) << 8 | \
+	(u_int16_t)*((const u_int8_t *)(p) + 0))
+#define EXTRACT_LE_32BITS(p) \
+	((u_int32_t)*((const u_int8_t *)(p) + 3) << 24 | \
+	(u_int32_t)*((const u_int8_t *)(p) + 2) << 16 | \
+	(u_int32_t)*((const u_int8_t *)(p) + 1) << 8 | \
+	(u_int32_t)*((const u_int8_t *)(p) + 0))