diff options
Diffstat (limited to 'contrib/tcpdump/print-lane.c')
| -rw-r--r-- | contrib/tcpdump/print-lane.c | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/contrib/tcpdump/print-lane.c b/contrib/tcpdump/print-lane.c new file mode 100644 index 0000000..33723aa --- /dev/null +++ b/contrib/tcpdump/print-lane.c @@ -0,0 +1,167 @@ +/* + * Marko Kiiskila carnil@cs.tut.fi + * + * Tampere University of Technology - Telecommunications Laboratory + * + * 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, that both notices appear in supporting + * documentation, and that the use of this software is + * acknowledged in any publications resulting from using + * the software. + * + * TUT ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" + * CONDITION AND DISCLAIMS ANY LIABILITY OF ANY KIND FOR + * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS + * SOFTWARE. + * + */ + +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/tcpdump/print-lane.c,v 1.25 2005-11-13 12:12:42 guy Exp $ (LBL)"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <tcpdump-stdinc.h> + +#include <stdio.h> +#include <pcap.h> + +#include "interface.h" +#include "addrtoname.h" +#include "extract.h" +#include "ether.h" +#include "lane.h" + +static const struct tok lecop2str[] = { + { 0x0001, "configure request" }, + { 0x0101, "configure response" }, + { 0x0002, "join request" }, + { 0x0102, "join response" }, + { 0x0003, "ready query" }, + { 0x0103, "ready indication" }, + { 0x0004, "register request" }, + { 0x0104, "register response" }, + { 0x0005, "unregister request" }, + { 0x0105, "unregister response" }, + { 0x0006, "ARP request" }, + { 0x0106, "ARP response" }, + { 0x0007, "flush request" }, + { 0x0107, "flush response" }, + { 0x0008, "NARP request" }, + { 0x0009, "topology request" }, + { 0, NULL } +}; + +static inline void +lane_hdr_print(register const u_char *bp, int length) +{ + register const struct lecdatahdr_8023 *ep; + + ep = (const struct lecdatahdr_8023 *)bp; + if (qflag) + (void)printf("lecid:%x %s %s %d: ", + EXTRACT_16BITS(&ep->le_header), + etheraddr_string(ep->h_source), + etheraddr_string(ep->h_dest), + length); + else + (void)printf("lecid:%x %s %s %s %d: ", + EXTRACT_16BITS(&ep->le_header), + etheraddr_string(ep->h_source), + etheraddr_string(ep->h_dest), + etherproto_string(ep->h_type), + length); +} + +/* + * This is the top level routine of the printer. 'p' points + * to the LANE 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. + * + * This assumes 802.3, not 802.5, LAN emulation. + */ +void +lane_print(const u_char *p, u_int length, u_int caplen) +{ + struct lane_controlhdr *lec; + struct lecdatahdr_8023 *ep; + u_short ether_type; + u_short extracted_ethertype; + + if (caplen < sizeof(struct lane_controlhdr)) { + printf("[|lane]"); + return; + } + + lec = (struct lane_controlhdr *)p; + if (EXTRACT_16BITS(&lec->lec_header) == 0xff00) { + /* + * LE Control. + */ + printf("lec: proto %x vers %x %s", + lec->lec_proto, lec->lec_vers, + tok2str(lecop2str, "opcode-#%u", EXTRACT_16BITS(&lec->lec_opcode))); + return; + } + + if (caplen < sizeof(struct lecdatahdr_8023)) { + printf("[|lane]"); + return; + } + + if (eflag) + lane_hdr_print(p, length); + + /* + * Go past the LANE header. + */ + length -= sizeof(struct lecdatahdr_8023); + caplen -= sizeof(struct lecdatahdr_8023); + ep = (struct lecdatahdr_8023 *)p; + p += sizeof(struct lecdatahdr_8023); + + ether_type = EXTRACT_16BITS(&ep->h_type); + + /* + * Is it (gag) an 802.3 encapsulation? + */ + if (ether_type <= ETHERMTU) { + /* Try to print the LLC-layer header & higher layers */ + if (llc_print(p, length, caplen, ep->h_source, ep->h_dest, + &extracted_ethertype) == 0) { + /* ether_type not known, print raw packet */ + if (!eflag) + lane_hdr_print((u_char *)ep, length + sizeof(*ep)); + if (extracted_ethertype) { + printf("(LLC %s) ", + etherproto_string(htons(extracted_ethertype))); + } + if (!suppress_default_print) + default_print(p, caplen); + } + } else if (ether_encap_print(ether_type, p, length, caplen, + &extracted_ethertype) == 0) { + /* ether_type not known, print raw packet */ + if (!eflag) + lane_hdr_print((u_char *)ep, length + sizeof(*ep)); + if (!suppress_default_print) + default_print(p, caplen); + } +} + +u_int +lane_if_print(const struct pcap_pkthdr *h, const u_char *p) +{ + lane_print(p, h->len, h->caplen); + + return (sizeof(struct lecdatahdr_8023)); +} |
