tcpdump/token.h
guy edb0e92cdc Add a few more GCC warnings on GCC >= 2 for ".devel" builds.
From Neil T. Spring: fixes for many of those warnings:

	addrtoname.c, configure.in: Linux needs netinet/ether.h for
	ether_ntohost

	print-*.c: change char *foo = "bar" to const char *foo = "bar"
	to appease -Wwrite-strings; should affect no run-time behavior.

	print-*.c: make some variables unsigned.

	print-bgp.c: plen ('prefix len') is unsigned, no reason to
	validate by comparing to zero.

	print-cnfp.c, print-rx.c: use intoa, provided by addrtoname,
	instead of inet_ntoa.

	print-domain.c: unsigned int l; (l=foo()) < 0 is guaranteed to
	be false, so check for (u_int)-1, which represents failure,
	explicitly.

	print-isakmp.c: complete initialization of attrmap objects.

	print-lwres.c: "if(x); print foo;" seemed much more likely to be
	intended to be "if(x) { print foo; }".

	print-smb.c: complete initialization of some structures.

In addition, add some fixes for the signed vs. unsigned comparison
warnings:

	extract.h: cast the result of the byte-extraction-and-combining,
	as, at least for the 16-bit version, C's integral promotions
	will turn "u_int16_t" into "int" if there are other "int"s
	nearby.

	print-*.c: make some more variables unsigned, or add casts to an
	unsigned type of signed values known not to be negative, or add
	casts to "int" of unsigned values known to fit in an "int", and
	make other changes needed to handle the aforementioned variables
	now being unsigned.

	print-isakmp.c: clean up the handling of error/status indicators
	in notify messages.

	print-ppp.c: get rid of a check that an unsigned quantity is >=
	0.

	print-radius.c: clean up some of the bounds checking.

	print-smb.c: extract the word count into a "u_int" to avoid the
	aforementioned problems with C's integral promotions.

	print-snmp.c: change a check that an unsigned variable is >= 0
	to a check that it's != 0.

Also, fix some formats to use "%u" rather than "%d" for unsigned
quantities.
2002-09-05 00:00:07 +00:00

53 lines
2.3 KiB
C

/* @(#) $Header: /tcpdump/master/tcpdump/token.h,v 1.4 2002-09-05 00:00:25 guy Exp $ (LBL) */
/*
* Copyright (c) 1998, Larry Lile
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice unmodified, this list of conditions, and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#define TOKEN_HDRLEN 14
#define TOKEN_RING_MAC_LEN 6
#define ROUTING_SEGMENT_MAX 16
#define IS_SOURCE_ROUTED(trp) ((trp)->token_shost[0] & 0x80)
#define FRAME_TYPE(trp) (((trp)->token_fc & 0xC0) >> 6)
#define TOKEN_FC_LLC 1
#define BROADCAST(trp) ((ntohs((trp)->token_rcf) & 0xE000) >> 13)
#define RIF_LENGTH(trp) ((ntohs((trp)->token_rcf) & 0x1f00) >> 8)
#define DIRECTION(trp) ((ntohs((trp)->token_rcf) & 0x0080) >> 7)
#define LARGEST_FRAME(trp) ((ntohs((trp)->token_rcf) & 0x0070) >> 4)
#define RING_NUMBER(trp, x) ((ntohs((trp)->token_rseg[x]) & 0xfff0) >> 4)
#define BRIDGE_NUMBER(trp, x) ((ntohs((trp)->token_rseg[x]) & 0x000f))
#define SEGMENT_COUNT(trp) ((int)((RIF_LENGTH(trp) - 2) / 2))
struct token_header {
u_int8_t token_ac;
u_int8_t token_fc;
u_int8_t token_dhost[TOKEN_RING_MAC_LEN];
u_int8_t token_shost[TOKEN_RING_MAC_LEN];
u_int16_t token_rcf;
u_int16_t token_rseg[ROUTING_SEGMENT_MAX];
};