2001-04-03 07:45:48 +00:00
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/*
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* Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that: (1) source code distributions
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* retain the above copyright notice and this paragraph in its entirety, (2)
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* distributions including binary code include the above copyright notice and
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* this paragraph in its entirety in the documentation or other materials
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* provided with the distribution, and (3) all advertising materials mentioning
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* features or use of this software display the following acknowledgement:
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* ``This product includes software developed by the University of California,
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* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
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* the University nor the names of its contributors may be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*/
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2017-01-31 19:17:06 +00:00
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/* \summary: Linux cooked sockets capture printer */
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2001-04-03 07:45:48 +00:00
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#ifdef HAVE_CONFIG_H
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2023-05-10 15:02:34 +00:00
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#include <config.h>
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2001-04-03 07:45:48 +00:00
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#endif
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2023-05-10 15:02:34 +00:00
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#ifdef HAVE_NET_IF_H
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/*
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* Include diag-control.h before <net/if.h>, which too defines a macro
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* named ND_UNREACHABLE.
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*/
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#include "diag-control.h"
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#include <net/if.h>
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#endif
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2001-04-03 07:45:48 +00:00
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2023-05-10 15:02:34 +00:00
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#include "netdissect-stdinc.h"
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#define ND_LONGJMP_FROM_TCHECK
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2017-01-31 19:17:06 +00:00
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#include "netdissect.h"
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2001-04-03 07:45:48 +00:00
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#include "addrtoname.h"
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#include "ethertype.h"
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2005-05-29 18:17:16 +00:00
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#include "extract.h"
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2001-04-03 07:45:48 +00:00
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2015-01-06 19:03:11 +00:00
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/*
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* For captures on Linux cooked sockets, we construct a fake header
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* that includes:
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*
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* a 2-byte "packet type" which is one of:
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*
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* LINUX_SLL_HOST packet was sent to us
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* LINUX_SLL_BROADCAST packet was broadcast
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* LINUX_SLL_MULTICAST packet was multicast
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* LINUX_SLL_OTHERHOST packet was sent to somebody else
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* LINUX_SLL_OUTGOING packet was sent *by* us;
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*
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* a 2-byte Ethernet protocol field;
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*
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* a 2-byte link-layer type;
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*
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* a 2-byte link-layer address length;
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*
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* an 8-byte source link-layer address, whose actual length is
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* specified by the previous value.
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*
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* All fields except for the link-layer address are in network byte order.
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*
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* DO NOT change the layout of this structure, or change any of the
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* LINUX_SLL_ values below. If you must change the link-layer header
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* for a "cooked" Linux capture, introduce a new DLT_ type (ask
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* "tcpdump-workers@lists.tcpdump.org" for one, so that you don't give it
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* a value that collides with a value already being used), and use the
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* new header in captures of that type, so that programs that can
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* handle DLT_LINUX_SLL captures will continue to handle them correctly
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* without any change, and so that capture files with different headers
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* can be told apart and programs that read them can dissect the
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* packets in them.
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*
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* This structure, and the #defines below, must be the same in the
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* libpcap and tcpdump versions of "sll.h".
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*/
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/*
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* A DLT_LINUX_SLL fake link-layer header.
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*/
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#define SLL_HDR_LEN 16 /* total header length */
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#define SLL_ADDRLEN 8 /* length of address field */
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struct sll_header {
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2023-05-10 15:02:34 +00:00
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nd_uint16_t sll_pkttype; /* packet type */
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nd_uint16_t sll_hatype; /* link-layer address type */
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nd_uint16_t sll_halen; /* link-layer address length */
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nd_byte sll_addr[SLL_ADDRLEN]; /* link-layer address */
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nd_uint16_t sll_protocol; /* protocol */
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};
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/*
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* A DLT_LINUX_SLL2 fake link-layer header.
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*/
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#define SLL2_HDR_LEN 20 /* total header length */
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struct sll2_header {
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nd_uint16_t sll2_protocol; /* protocol */
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nd_uint16_t sll2_reserved_mbz; /* reserved - must be zero */
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nd_uint32_t sll2_if_index; /* 1-based interface index */
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nd_uint16_t sll2_hatype; /* link-layer address type */
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nd_uint8_t sll2_pkttype; /* packet type */
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nd_uint8_t sll2_halen; /* link-layer address length */
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nd_byte sll2_addr[SLL_ADDRLEN]; /* link-layer address */
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2015-01-06 19:03:11 +00:00
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};
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/*
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* The LINUX_SLL_ values for "sll_pkttype"; these correspond to the
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* PACKET_ values on Linux, but are defined here so that they're
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* available even on systems other than Linux, and so that they
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* don't change even if the PACKET_ values change.
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*/
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#define LINUX_SLL_HOST 0
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#define LINUX_SLL_BROADCAST 1
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#define LINUX_SLL_MULTICAST 2
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#define LINUX_SLL_OTHERHOST 3
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#define LINUX_SLL_OUTGOING 4
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/*
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* The LINUX_SLL_ values for "sll_protocol"; these correspond to the
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* ETH_P_ values on Linux, but are defined here so that they're
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* available even on systems other than Linux. We assume, for now,
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* that the ETH_P_ values won't change in Linux; if they do, then:
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*
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* if we don't translate them in "pcap-linux.c", capture files
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* won't necessarily be readable if captured on a system that
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* defines ETH_P_ values that don't match these values;
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*
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* if we do translate them in "pcap-linux.c", that makes life
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* unpleasant for the BPF code generator, as the values you test
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* for in the kernel aren't the values that you test for when
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* reading a capture file, so the fixup code run on BPF programs
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* handed to the kernel ends up having to do more work.
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*
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* Add other values here as necessary, for handling packet types that
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* might show up on non-Ethernet, non-802.x networks. (Not all the ones
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* in the Linux "if_ether.h" will, I suspect, actually show up in
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* captures.)
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*/
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#define LINUX_SLL_P_802_3 0x0001 /* Novell 802.3 frames without 802.2 LLC header */
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#define LINUX_SLL_P_802_2 0x0004 /* 802.2 frames (not D/I/X Ethernet) */
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static const struct tok sll_pkttype_values[] = {
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2005-05-29 18:17:16 +00:00
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{ LINUX_SLL_HOST, "In" },
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{ LINUX_SLL_BROADCAST, "B" },
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{ LINUX_SLL_MULTICAST, "M" },
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{ LINUX_SLL_OTHERHOST, "P" },
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{ LINUX_SLL_OUTGOING, "Out" },
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{ 0, NULL}
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};
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2023-05-10 15:02:34 +00:00
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static void
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sll_print(netdissect_options *ndo, const struct sll_header *sllp, u_int length)
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2001-04-03 07:45:48 +00:00
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{
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2005-07-11 03:54:22 +00:00
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u_short ether_type;
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2023-05-10 15:02:34 +00:00
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ndo->ndo_protocol = "sll";
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ND_PRINT("%3s ",
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tok2str(sll_pkttype_values,"?",GET_BE_U_2(sllp->sll_pkttype)));
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2001-04-03 07:45:48 +00:00
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/*
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* XXX - check the link-layer address type value?
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* For now, we just assume 6 means Ethernet.
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* XXX - print others as strings of hex?
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*/
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2023-05-10 15:02:34 +00:00
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if (GET_BE_U_2(sllp->sll_halen) == MAC_ADDR_LEN)
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ND_PRINT("%s ", GET_ETHERADDR_STRING(sllp->sll_addr));
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2001-04-03 07:45:48 +00:00
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2015-01-06 19:03:11 +00:00
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if (!ndo->ndo_qflag) {
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2023-05-10 15:02:34 +00:00
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ether_type = GET_BE_U_2(sllp->sll_protocol);
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2015-01-06 19:03:11 +00:00
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2023-05-10 15:02:34 +00:00
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if (ether_type <= MAX_ETHERNET_LENGTH_VAL) {
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2005-07-11 03:54:22 +00:00
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/*
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* Not an Ethernet type; what type is it?
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*/
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switch (ether_type) {
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case LINUX_SLL_P_802_3:
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/*
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* Ethernet_802.3 IPX frame.
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*/
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2023-05-10 15:02:34 +00:00
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ND_PRINT("802.3");
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2005-07-11 03:54:22 +00:00
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break;
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case LINUX_SLL_P_802_2:
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/*
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* 802.2.
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*/
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2023-05-10 15:02:34 +00:00
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ND_PRINT("802.2");
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2005-07-11 03:54:22 +00:00
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break;
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default:
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/*
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* What is it?
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*/
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2023-05-10 15:02:34 +00:00
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ND_PRINT("ethertype Unknown (0x%04x)",
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ether_type);
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2005-07-11 03:54:22 +00:00
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break;
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}
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} else {
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2023-05-10 15:02:34 +00:00
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ND_PRINT("ethertype %s (0x%04x)",
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2005-07-11 03:54:22 +00:00
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tok2str(ethertype_values, "Unknown", ether_type),
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2023-05-10 15:02:34 +00:00
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ether_type);
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2005-07-11 03:54:22 +00:00
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}
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2023-05-10 15:02:34 +00:00
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ND_PRINT(", length %u: ", length);
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2005-07-11 03:54:22 +00:00
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}
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2001-04-03 07:45:48 +00:00
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}
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/*
|
2004-03-31 09:17:26 +00:00
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* This is the top level routine of the printer. 'p' points to the
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* Linux "cooked capture" header of the packet, 'h->ts' is the timestamp,
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2005-05-29 18:17:16 +00:00
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* 'h->len' is the length of the packet off the wire, and 'h->caplen'
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2001-04-03 07:45:48 +00:00
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* is the number of bytes actually captured.
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*/
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2023-05-10 15:02:34 +00:00
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void
|
2015-01-06 19:03:11 +00:00
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sll_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p)
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2001-04-03 07:45:48 +00:00
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{
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u_int caplen = h->caplen;
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u_int length = h->len;
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2023-05-10 15:02:34 +00:00
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const struct sll_header *sllp;
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2019-10-06 04:36:53 +00:00
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u_short hatype;
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2001-04-03 07:45:48 +00:00
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u_short ether_type;
|
2017-01-31 19:17:06 +00:00
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int llc_hdrlen;
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u_int hdrlen;
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2001-04-03 07:45:48 +00:00
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2023-05-10 15:02:34 +00:00
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ndo->ndo_protocol = "sll";
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ND_TCHECK_LEN(p, SLL_HDR_LEN);
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2001-04-03 07:45:48 +00:00
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sllp = (const struct sll_header *)p;
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|
2015-01-06 19:03:11 +00:00
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if (ndo->ndo_eflag)
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sll_print(ndo, sllp, length);
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2001-04-03 07:45:48 +00:00
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/*
|
2004-03-31 09:17:26 +00:00
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* Go past the cooked-mode header.
|
2001-04-03 07:45:48 +00:00
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*/
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length -= SLL_HDR_LEN;
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caplen -= SLL_HDR_LEN;
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p += SLL_HDR_LEN;
|
2017-01-31 19:17:06 +00:00
|
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hdrlen = SLL_HDR_LEN;
|
2001-04-03 07:45:48 +00:00
|
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|
2023-05-10 15:02:34 +00:00
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hatype = GET_BE_U_2(sllp->sll_hatype);
|
2019-10-06 04:36:53 +00:00
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switch (hatype) {
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case 803:
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/*
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* This is an packet with a radiotap header;
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* just dissect the payload as such.
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*/
|
2023-05-10 15:02:34 +00:00
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ndo->ndo_ll_hdr_len += SLL_HDR_LEN;
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ndo->ndo_ll_hdr_len += ieee802_11_radio_print(ndo, p, length, caplen);
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return;
|
2019-10-06 04:36:53 +00:00
|
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}
|
2023-05-10 15:02:34 +00:00
|
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ether_type = GET_BE_U_2(sllp->sll_protocol);
|
2001-04-03 07:45:48 +00:00
|
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|
2010-10-28 16:23:25 +00:00
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recurse:
|
2001-04-03 07:45:48 +00:00
|
|
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/*
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* Is it (gag) an 802.3 encapsulation, or some non-Ethernet
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* packet type?
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*/
|
2023-05-10 15:02:34 +00:00
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if (ether_type <= MAX_ETHERNET_LENGTH_VAL) {
|
2001-04-03 07:45:48 +00:00
|
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/*
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* Yes - what type is it?
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*/
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switch (ether_type) {
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|
2002-06-21 00:43:23 +00:00
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case LINUX_SLL_P_802_3:
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|
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/*
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* Ethernet_802.3 IPX frame.
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*/
|
2015-01-06 19:03:11 +00:00
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ipx_print(ndo, p, length);
|
2002-06-21 00:43:23 +00:00
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break;
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|
2001-04-03 07:45:48 +00:00
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case LINUX_SLL_P_802_2:
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/*
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* 802.2.
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* Try to print the LLC-layer header & higher layers.
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|
*/
|
2017-01-31 19:17:06 +00:00
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|
|
llc_hdrlen = llc_print(ndo, p, length, caplen, NULL, NULL);
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|
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if (llc_hdrlen < 0)
|
2001-04-03 07:45:48 +00:00
|
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|
goto unknown; /* unknown LLC type */
|
2017-01-31 19:17:06 +00:00
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hdrlen += llc_hdrlen;
|
2001-04-03 07:45:48 +00:00
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|
break;
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default:
|
2007-10-16 02:20:42 +00:00
|
|
|
/*FALLTHROUGH*/
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|
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|
2001-04-03 07:45:48 +00:00
|
|
|
unknown:
|
2017-01-31 19:17:06 +00:00
|
|
|
/* packet type not known, print raw packet */
|
2015-01-06 19:03:11 +00:00
|
|
|
if (!ndo->ndo_suppress_default_print)
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|
|
ND_DEFAULTPRINT(p, caplen);
|
2001-04-03 07:45:48 +00:00
|
|
|
break;
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|
|
|
}
|
2010-10-28 16:23:25 +00:00
|
|
|
} else if (ether_type == ETHERTYPE_8021Q) {
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|
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|
/*
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|
|
|
* Print VLAN information, and then go back and process
|
|
|
|
* the enclosed type field.
|
|
|
|
*/
|
2017-01-31 19:17:06 +00:00
|
|
|
if (caplen < 4) {
|
2023-05-10 15:02:34 +00:00
|
|
|
ndo->ndo_protocol = "vlan";
|
|
|
|
nd_print_trunc(ndo);
|
|
|
|
ndo->ndo_ll_hdr_len += hdrlen + caplen;
|
|
|
|
return;
|
2010-10-28 16:23:25 +00:00
|
|
|
}
|
2015-01-06 19:03:11 +00:00
|
|
|
if (ndo->ndo_eflag) {
|
2023-05-10 15:02:34 +00:00
|
|
|
uint16_t tag = GET_BE_U_2(p);
|
2010-10-28 16:23:25 +00:00
|
|
|
|
2023-05-10 15:02:34 +00:00
|
|
|
ND_PRINT("%s, ", ieee8021q_tci_string(tag));
|
2010-10-28 16:23:25 +00:00
|
|
|
}
|
|
|
|
|
2023-05-10 15:02:34 +00:00
|
|
|
ether_type = GET_BE_U_2(p + 2);
|
|
|
|
if (ether_type <= MAX_ETHERNET_LENGTH_VAL)
|
2010-10-28 16:23:25 +00:00
|
|
|
ether_type = LINUX_SLL_P_802_2;
|
2015-01-06 19:03:11 +00:00
|
|
|
if (!ndo->ndo_qflag) {
|
2023-05-10 15:02:34 +00:00
|
|
|
ND_PRINT("ethertype %s, ",
|
|
|
|
tok2str(ethertype_values, "Unknown", ether_type));
|
2010-10-28 16:23:25 +00:00
|
|
|
}
|
|
|
|
p += 4;
|
|
|
|
length -= 4;
|
|
|
|
caplen -= 4;
|
2017-01-31 19:17:06 +00:00
|
|
|
hdrlen += 4;
|
2010-10-28 16:23:25 +00:00
|
|
|
goto recurse;
|
|
|
|
} else {
|
2017-01-31 19:17:06 +00:00
|
|
|
if (ethertype_print(ndo, ether_type, p, length, caplen, NULL, NULL) == 0) {
|
2010-10-28 16:23:25 +00:00
|
|
|
/* ether_type not known, print raw packet */
|
2015-01-06 19:03:11 +00:00
|
|
|
if (!ndo->ndo_eflag)
|
|
|
|
sll_print(ndo, sllp, length + SLL_HDR_LEN);
|
|
|
|
if (!ndo->ndo_suppress_default_print)
|
|
|
|
ND_DEFAULTPRINT(p, caplen);
|
2010-10-28 16:23:25 +00:00
|
|
|
}
|
2001-04-03 07:45:48 +00:00
|
|
|
}
|
2004-03-31 09:17:26 +00:00
|
|
|
|
2023-05-10 15:02:34 +00:00
|
|
|
ndo->ndo_ll_hdr_len += hdrlen;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
sll2_print(netdissect_options *ndo, const struct sll2_header *sllp, u_int length)
|
|
|
|
{
|
|
|
|
u_short ether_type;
|
|
|
|
|
|
|
|
ndo->ndo_protocol = "sll2";
|
|
|
|
ND_PRINT("ifindex %u ", GET_BE_U_4(sllp->sll2_if_index));
|
|
|
|
|
|
|
|
/*
|
|
|
|
* XXX - check the link-layer address type value?
|
|
|
|
* For now, we just assume 6 means Ethernet.
|
|
|
|
* XXX - print others as strings of hex?
|
|
|
|
*/
|
|
|
|
if (GET_U_1(sllp->sll2_halen) == MAC_ADDR_LEN)
|
|
|
|
ND_PRINT("%s ", GET_ETHERADDR_STRING(sllp->sll2_addr));
|
|
|
|
|
|
|
|
if (!ndo->ndo_qflag) {
|
|
|
|
ether_type = GET_BE_U_2(sllp->sll2_protocol);
|
|
|
|
|
|
|
|
if (ether_type <= MAX_ETHERNET_LENGTH_VAL) {
|
|
|
|
/*
|
|
|
|
* Not an Ethernet type; what type is it?
|
|
|
|
*/
|
|
|
|
switch (ether_type) {
|
|
|
|
|
|
|
|
case LINUX_SLL_P_802_3:
|
|
|
|
/*
|
|
|
|
* Ethernet_802.3 IPX frame.
|
|
|
|
*/
|
|
|
|
ND_PRINT("802.3");
|
|
|
|
break;
|
|
|
|
|
|
|
|
case LINUX_SLL_P_802_2:
|
|
|
|
/*
|
|
|
|
* 802.2.
|
|
|
|
*/
|
|
|
|
ND_PRINT("802.2");
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
/*
|
|
|
|
* What is it?
|
|
|
|
*/
|
|
|
|
ND_PRINT("ethertype Unknown (0x%04x)",
|
|
|
|
ether_type);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
ND_PRINT("ethertype %s (0x%04x)",
|
|
|
|
tok2str(ethertype_values, "Unknown", ether_type),
|
|
|
|
ether_type);
|
|
|
|
}
|
|
|
|
ND_PRINT(", 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.
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
sll2_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p)
|
|
|
|
{
|
|
|
|
u_int caplen = h->caplen;
|
|
|
|
u_int length = h->len;
|
|
|
|
const struct sll2_header *sllp;
|
|
|
|
u_short hatype;
|
|
|
|
u_short ether_type;
|
|
|
|
int llc_hdrlen;
|
|
|
|
u_int hdrlen;
|
|
|
|
#ifdef HAVE_NET_IF_H
|
|
|
|
uint32_t if_index;
|
|
|
|
char ifname[IF_NAMESIZE];
|
|
|
|
#endif
|
|
|
|
|
|
|
|
ndo->ndo_protocol = "sll2";
|
|
|
|
ND_TCHECK_LEN(p, SLL2_HDR_LEN);
|
|
|
|
|
|
|
|
sllp = (const struct sll2_header *)p;
|
|
|
|
#ifdef HAVE_NET_IF_H
|
|
|
|
if_index = GET_BE_U_4(sllp->sll2_if_index);
|
|
|
|
if (!if_indextoname(if_index, ifname))
|
|
|
|
strncpy(ifname, "?", 2);
|
|
|
|
ND_PRINT("%-5s ", ifname);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
ND_PRINT("%-3s ",
|
|
|
|
tok2str(sll_pkttype_values, "?", GET_U_1(sllp->sll2_pkttype)));
|
|
|
|
|
|
|
|
if (ndo->ndo_eflag)
|
|
|
|
sll2_print(ndo, sllp, length);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Go past the cooked-mode header.
|
|
|
|
*/
|
|
|
|
length -= SLL2_HDR_LEN;
|
|
|
|
caplen -= SLL2_HDR_LEN;
|
|
|
|
p += SLL2_HDR_LEN;
|
|
|
|
hdrlen = SLL2_HDR_LEN;
|
|
|
|
|
|
|
|
hatype = GET_BE_U_2(sllp->sll2_hatype);
|
|
|
|
switch (hatype) {
|
|
|
|
|
|
|
|
case 803:
|
|
|
|
/*
|
|
|
|
* This is an packet with a radiotap header;
|
|
|
|
* just dissect the payload as such.
|
|
|
|
*/
|
|
|
|
ndo->ndo_ll_hdr_len += SLL2_HDR_LEN;
|
|
|
|
ndo->ndo_ll_hdr_len += ieee802_11_radio_print(ndo, p, length, caplen);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
ether_type = GET_BE_U_2(sllp->sll2_protocol);
|
|
|
|
|
|
|
|
recurse:
|
|
|
|
/*
|
|
|
|
* Is it (gag) an 802.3 encapsulation, or some non-Ethernet
|
|
|
|
* packet type?
|
|
|
|
*/
|
|
|
|
if (ether_type <= MAX_ETHERNET_LENGTH_VAL) {
|
|
|
|
/*
|
|
|
|
* Yes - what type is it?
|
|
|
|
*/
|
|
|
|
switch (ether_type) {
|
|
|
|
|
|
|
|
case LINUX_SLL_P_802_3:
|
|
|
|
/*
|
|
|
|
* Ethernet_802.3 IPX frame.
|
|
|
|
*/
|
|
|
|
ipx_print(ndo, p, length);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case LINUX_SLL_P_802_2:
|
|
|
|
/*
|
|
|
|
* 802.2.
|
|
|
|
* Try to print the LLC-layer header & higher layers.
|
|
|
|
*/
|
|
|
|
llc_hdrlen = llc_print(ndo, p, length, caplen, NULL, NULL);
|
|
|
|
if (llc_hdrlen < 0)
|
|
|
|
goto unknown; /* unknown LLC type */
|
|
|
|
hdrlen += llc_hdrlen;
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
/*FALLTHROUGH*/
|
|
|
|
|
|
|
|
unknown:
|
|
|
|
/* packet type not known, print raw packet */
|
|
|
|
if (!ndo->ndo_suppress_default_print)
|
|
|
|
ND_DEFAULTPRINT(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) {
|
|
|
|
ndo->ndo_protocol = "vlan";
|
|
|
|
nd_print_trunc(ndo);
|
|
|
|
ndo->ndo_ll_hdr_len += hdrlen + caplen;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
if (ndo->ndo_eflag) {
|
|
|
|
uint16_t tag = GET_BE_U_2(p);
|
|
|
|
|
|
|
|
ND_PRINT("%s, ", ieee8021q_tci_string(tag));
|
|
|
|
}
|
|
|
|
|
|
|
|
ether_type = GET_BE_U_2(p + 2);
|
|
|
|
if (ether_type <= MAX_ETHERNET_LENGTH_VAL)
|
|
|
|
ether_type = LINUX_SLL_P_802_2;
|
|
|
|
if (!ndo->ndo_qflag) {
|
|
|
|
ND_PRINT("ethertype %s, ",
|
|
|
|
tok2str(ethertype_values, "Unknown", ether_type));
|
|
|
|
}
|
|
|
|
p += 4;
|
|
|
|
length -= 4;
|
|
|
|
caplen -= 4;
|
|
|
|
hdrlen += 4;
|
|
|
|
goto recurse;
|
|
|
|
} else {
|
|
|
|
if (ethertype_print(ndo, ether_type, p, length, caplen, NULL, NULL) == 0) {
|
|
|
|
/* ether_type not known, print raw packet */
|
|
|
|
if (!ndo->ndo_eflag)
|
|
|
|
sll2_print(ndo, sllp, length + SLL2_HDR_LEN);
|
|
|
|
if (!ndo->ndo_suppress_default_print)
|
|
|
|
ND_DEFAULTPRINT(p, caplen);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
ndo->ndo_ll_hdr_len += hdrlen;
|
2001-04-03 07:45:48 +00:00
|
|
|
}
|