44 lines
1.8 KiB
C
44 lines
1.8 KiB
C
/*
|
|
* 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_HDR_LEN 14
|
|
#define IS_SOURCE_ROUTED (tp->ether_shost[0] & 0x80)
|
|
#define RIF_LENGTH ((ntohs(tp->rcf) & 0x1f00) >> 8)
|
|
#define TOKEN_RING_MAC_LEN 6
|
|
#define ROUTING_SEGMENT_MAX 16
|
|
|
|
struct token_header {
|
|
u_char ac;
|
|
u_char fc;
|
|
u_char ether_dhost[TOKEN_RING_MAC_LEN];
|
|
u_char ether_shost[TOKEN_RING_MAC_LEN];
|
|
u_short rcf;
|
|
u_short rseg[ROUTING_SEGMENT_MAX];
|
|
};
|
|
|