From: guy <guy>
Date: Fri, 30 Nov 2001 07:25:48 +0000 (+0000)
Subject: Add support for DLT_PRISM_HEADER.
X-Git-Tag: libpcap-0.7.1~9
X-Git-Url: https://git.tcpdump.org/libpcap/commitdiff_plain/b0ea1152b6f3a59ece2c2cb5777ffd80a17e5209

Add support for DLT_PRISM_HEADER.
---

diff --git a/gencode.c b/gencode.c
index b1b303ed..bb2b0aad 100644
--- a/gencode.c
+++ b/gencode.c
@@ -21,7 +21,7 @@
  */
 #ifndef lint
 static const char rcsid[] =
-    "@(#) $Header: /tcpdump/master/libpcap/gencode.c,v 1.159 2001-11-12 21:59:44 fenner Exp $ (LBL)";
+    "@(#) $Header: /tcpdump/master/libpcap/gencode.c,v 1.160 2001-11-30 07:25:48 guy Exp $ (LBL)";
 #endif
 
 #ifdef HAVE_CONFIG_H
@@ -676,6 +676,21 @@ init_linktype(type)
 		off_nl = 30;
 		return;
 
+	case DLT_PRISM_HEADER:
+		/*
+		 * Same as 802.11, but with an additional header before
+		 * the 802.11 header, containing a bunch of additional
+		 * information including radio-level information.
+		 *
+		 * The header is 144 bytes long.
+		 *
+		 * XXX - same variable-length header problem; at least
+		 * the Prism header is fixed-length.
+		 */
+		off_linktype = 144+24;
+		off_nl = 144+30;
+		return;
+
 	case DLT_ATM_RFC1483:
 		/*
 		 * assume routed, non-ISO PDUs
@@ -934,6 +949,7 @@ gen_linktype(proto)
 		break;
 
 	case DLT_IEEE802_11:
+	case DLT_PRISM_HEADER:
 	case DLT_FDDI:
 	case DLT_IEEE802:
 	case DLT_ATM_RFC1483: