Add tcpdump and libpcap.

- Update the file builder generator to handle generator specific cflags and
  includes. The tcpdump and libpcap have localised headers and need specific
  headers paths to see them. There are also module specific flags and these
  need to be passed to the lex and yacc generators.

- Add the tcpdump support.

1 files changed, 233 insertions, 0 deletions

diff --git a/freebsd/contrib/tcpdump/print-sll.c b/freebsd/contrib/tcpdump/print-sll.c
new file mode 100644
index 00000000..264eeb30
--- /dev/null
+++ b/freebsd/contrib/tcpdump/print-sll.c
@@ -0,0 +1,233 @@
+#include <machine/rtems-bsd-user-space.h>
+
+/*
+ * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
+ *	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.
+ */
+#ifndef lint
+static const char rcsid[] _U_ =
+    "@(#) $Header: /tcpdump/master/tcpdump/print-sll.c,v 1.19 2005-11-13 12:12:43 guy Exp $ (LBL)";
+#endif
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <tcpdump-stdinc.h>
+
+#include <stdio.h>
+#include <string.h>
+#include <pcap.h>
+
+#include "interface.h"
+#include "addrtoname.h"
+#include "ethertype.h"
+#include "extract.h"
+
+#include "ether.h"
+#include "sll.h"
+
+const struct tok sll_pkttype_values[] = {
+    { LINUX_SLL_HOST, "In" },
+    { LINUX_SLL_BROADCAST, "B" },
+    { LINUX_SLL_MULTICAST, "M" },
+    { LINUX_SLL_OTHERHOST, "P" },
+    { LINUX_SLL_OUTGOING, "Out" },
+    { 0, NULL}
+};
+
+static inline void
+sll_print(register const struct sll_header *sllp, u_int length)
+{
+	u_short ether_type;
+
+        printf("%3s ",tok2str(sll_pkttype_values,"?",EXTRACT_16BITS(&sllp->sll_pkttype)));
+
+	/*
+	 * XXX - check the link-layer address type value?
+	 * For now, we just assume 6 means Ethernet.
+	 * XXX - print others as strings of hex?
+	 */
+	if (EXTRACT_16BITS(&sllp->sll_halen) == 6)
+		(void)printf("%s ", etheraddr_string(sllp->sll_addr));
+
+	if (!qflag) {
+		ether_type = EXTRACT_16BITS(&sllp->sll_protocol);
+	
+		if (ether_type <= ETHERMTU) {
+			/*
+			 * Not an Ethernet type; what type is it?
+			 */
+			switch (ether_type) {
+
+			case LINUX_SLL_P_802_3:
+				/*
+				 * Ethernet_802.3 IPX frame.
+				 */
+				(void)printf("802.3");
+				break;
+
+			case LINUX_SLL_P_802_2:
+				/*
+				 * 802.2.
+				 */
+				(void)printf("802.2");
+				break;
+
+			default:
+				/*
+				 * What is it?
+				 */
+				(void)printf("ethertype Unknown (0x%04x)",
+				    ether_type);
+				break;
+			}
+		} else {
+			(void)printf("ethertype %s (0x%04x)",
+			    tok2str(ethertype_values, "Unknown", ether_type),
+			    ether_type);
+		}
+		(void)printf(", length %u: ", length);
+	}
+}
+
+/*
+ * This is the top level routine of the printer.  'p' points to the
+ * Linux "cooked capture" header of the packet, 'h->ts' is the timestamp,
+ * 'h->len' is the length of the packet off the wire, and 'h->caplen'
+ * is the number of bytes actually captured.
+ */
+u_int
+sll_if_print(const struct pcap_pkthdr *h, const u_char *p)
+{
+	u_int caplen = h->caplen;
+	u_int length = h->len;
+	register const struct sll_header *sllp;
+	u_short ether_type;
+	u_short extracted_ethertype;
+
+	if (caplen < SLL_HDR_LEN) {
+		/*
+		 * XXX - this "can't happen" because "pcap-linux.c" always
+		 * adds this many bytes of header to every packet in a
+		 * cooked socket capture.
+		 */
+		printf("[|sll]");
+		return (caplen);
+	}
+
+	sllp = (const struct sll_header *)p;
+
+	if (eflag)
+		sll_print(sllp, length);
+
+	/*
+	 * Go past the cooked-mode header.
+	 */
+	length -= SLL_HDR_LEN;
+	caplen -= SLL_HDR_LEN;
+	p += SLL_HDR_LEN;
+
+	ether_type = EXTRACT_16BITS(&sllp->sll_protocol);
+
+recurse:
+	/*
+	 * Is it (gag) an 802.3 encapsulation, or some non-Ethernet
+	 * packet type?
+	 */
+	if (ether_type <= ETHERMTU) {
+		/*
+		 * Yes - what type is it?
+		 */
+		switch (ether_type) {
+
+		case LINUX_SLL_P_802_3:
+			/*
+			 * Ethernet_802.3 IPX frame.
+			 */
+			ipx_print(p, length);
+			break;
+
+		case LINUX_SLL_P_802_2:
+			/*
+			 * 802.2.
+			 * Try to print the LLC-layer header & higher layers.
+			 */
+			if (llc_print(p, length, caplen, NULL, NULL,
+			    &extracted_ethertype) == 0)
+				goto unknown;	/* unknown LLC type */
+			break;
+
+		default:
+			extracted_ethertype = 0;
+			/*FALLTHROUGH*/
+
+		unknown:
+			/* ether_type not known, print raw packet */
+			if (!eflag)
+				sll_print(sllp, length + SLL_HDR_LEN);
+			if (extracted_ethertype) {
+				printf("(LLC %s) ",
+			       etherproto_string(htons(extracted_ethertype)));
+			}
+			if (!suppress_default_print)
+				default_print(p, caplen);
+			break;
+		}
+	} else if (ether_type == ETHERTYPE_8021Q) {
+		/*
+		 * Print VLAN information, and then go back and process
+		 * the enclosed type field.
+		 */
+		if (caplen < 4 || length < 4) {
+			printf("[|vlan]");
+			return (SLL_HDR_LEN);
+		}
+	        if (eflag) {
+	        	u_int16_t tag = EXTRACT_16BITS(p);
+
+			printf("vlan %u, p %u%s, ",
+			    tag & 0xfff,
+			    tag >> 13,
+			    (tag & 0x1000) ? ", CFI" : "");
+		}
+
+		ether_type = EXTRACT_16BITS(p + 2);
+		if (ether_type <= ETHERMTU)
+			ether_type = LINUX_SLL_P_802_2;
+		if (!qflag) {
+			(void)printf("ethertype %s, ",
+			    tok2str(ethertype_values, "Unknown", ether_type));
+		}
+		p += 4;
+		length -= 4;
+		caplen -= 4;
+		goto recurse;
+	} else {
+		if (ethertype_print(gndo, ether_type, p, length, caplen) == 0) {
+			/* ether_type not known, print raw packet */
+			if (!eflag)
+				sll_print(sllp, length + SLL_HDR_LEN);
+			if (!suppress_default_print)
+				default_print(p, caplen);
+		}
+	}
+
+	return (SLL_HDR_LEN);
+}