Adding upstream version 4.99.4.upstream/4.99.4upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 143 insertions, 0 deletions

diff --git a/print-ipfc.c b/print-ipfc.c
new file mode 100644
index 0000000..ab5a813
--- /dev/null
+++ b/print-ipfc.c
@@ -0,0 +1,143 @@
+/*
+ * Copyright (c) 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.
+ */
+
+/* \summary: IP over Fibre Channel printer */
+
+/* specification: RFC 2625 */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "netdissect-stdinc.h"
+
+#include <string.h>
+
+#define ND_LONGJMP_FROM_TCHECK
+#include "netdissect.h"
+#include "addrtoname.h"
+
+
+struct ipfc_header {
+	nd_byte ipfc_dhost[2+MAC_ADDR_LEN];
+	nd_byte ipfc_shost[2+MAC_ADDR_LEN];
+};
+
+#define IPFC_HDRLEN 16
+
+/* Extract src, dst addresses */
+static void
+extract_ipfc_addrs(const struct ipfc_header *ipfcp, char *ipfcsrc,
+		   char *ipfcdst)
+{
+	/*
+	 * We assume that, as per RFC 2625, the lower 48 bits of the
+	 * source and destination addresses are MAC addresses.
+	 */
+	memcpy(ipfcdst, (const char *)&ipfcp->ipfc_dhost[2], MAC_ADDR_LEN);
+	memcpy(ipfcsrc, (const char *)&ipfcp->ipfc_shost[2], MAC_ADDR_LEN);
+}
+
+/*
+ * Print the Network_Header
+ */
+static void
+ipfc_hdr_print(netdissect_options *ndo,
+	       const struct ipfc_header *ipfcp _U_, u_int length,
+	       const u_char *ipfcsrc, const u_char *ipfcdst)
+{
+	const char *srcname, *dstname;
+
+	srcname = etheraddr_string(ndo, ipfcsrc);
+	dstname = etheraddr_string(ndo, ipfcdst);
+
+	/*
+	 * XXX - should we show the upper 16 bits of the addresses?
+	 * Do so only if "vflag" is set?
+	 * Section 3.3 "FC Port and Node Network Addresses" says that
+	 *
+	 *    In this specification, both the Source and Destination
+	 *    4-bit NAA identifiers SHALL be set to binary '0001'
+	 *    indicating that an IEEE 48-bit MAC address is contained
+	 *    in the lower 48 bits of the network address fields. The
+	 *    high order 12 bits in the network address fields SHALL
+	 *    be set to 0x0000.
+	 *
+	 * so, for captures following this specification, the upper 16
+	 * bits should be 0x1000, followed by a MAC address.
+	 */
+	ND_PRINT("%s > %s, length %u: ", srcname, dstname, length);
+}
+
+static u_int
+ipfc_print(netdissect_options *ndo, const u_char *p, u_int length, u_int caplen)
+{
+	const struct ipfc_header *ipfcp = (const struct ipfc_header *)p;
+	nd_mac_addr srcmac, dstmac;
+	struct lladdr_info src, dst;
+	int llc_hdrlen;
+
+	ndo->ndo_protocol = "ipfc";
+	ND_TCHECK_LEN(p, IPFC_HDRLEN);
+	/*
+	 * Get the network addresses into a canonical form
+	 */
+	extract_ipfc_addrs(ipfcp, (char *)srcmac, (char *)dstmac);
+
+	if (ndo->ndo_eflag)
+		ipfc_hdr_print(ndo, ipfcp, length, srcmac, dstmac);
+
+	src.addr = srcmac;
+	src.addr_string = etheraddr_string;
+	dst.addr = dstmac;
+	dst.addr_string = etheraddr_string;
+
+	/* Skip over Network_Header */
+	length -= IPFC_HDRLEN;
+	p += IPFC_HDRLEN;
+	caplen -= IPFC_HDRLEN;
+
+	/* Try to print the LLC-layer header & higher layers */
+	llc_hdrlen = llc_print(ndo, p, length, caplen, &src, &dst);
+	if (llc_hdrlen < 0) {
+		/*
+		 * Some kinds of LLC packet we cannot
+		 * handle intelligently
+		 */
+		if (!ndo->ndo_suppress_default_print)
+			ND_DEFAULTPRINT(p, caplen);
+		llc_hdrlen = -llc_hdrlen;
+	}
+	return (IPFC_HDRLEN + llc_hdrlen);
+}
+
+/*
+ * This is the top level routine of the printer.  'p' points
+ * to the Network_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.
+ */
+void
+ipfc_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p)
+{
+	ndo->ndo_protocol = "ipfc";
+	ndo->ndo_ll_hdr_len += ipfc_print(ndo, p, h->len, h->caplen);
+}