67e7422842
- Properly handle 32 bit sequence numbers when they wrap around - Don't drop GRE packets with stale ACK numbers, just ignore the ACK - Close race between node being shutdown and timer going off Also add support for lots of statistics, and control message ASCIIfication
129 lines
5.3 KiB
C
129 lines
5.3 KiB
C
|
|
/*
|
|
* ng_pptpgre.h
|
|
*
|
|
* Copyright (c) 1999 Whistle Communications, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* Subject to the following obligations and disclaimer of warranty, use and
|
|
* redistribution of this software, in source or object code forms, with or
|
|
* without modifications are expressly permitted by Whistle Communications;
|
|
* provided, however, that:
|
|
* 1. Any and all reproductions of the source or object code must include the
|
|
* copyright notice above and the following disclaimer of warranties; and
|
|
* 2. No rights are granted, in any manner or form, to use Whistle
|
|
* Communications, Inc. trademarks, including the mark "WHISTLE
|
|
* COMMUNICATIONS" on advertising, endorsements, or otherwise except as
|
|
* such appears in the above copyright notice or in the software.
|
|
*
|
|
* THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
|
|
* TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
|
|
* REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
|
|
* INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
|
|
* WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
|
|
* REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
|
|
* SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
|
|
* IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
|
|
* RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
|
|
* WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
|
|
* PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER 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 WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
|
|
* OF SUCH DAMAGE.
|
|
*
|
|
* Author: Archie Cobbs <archie@whistle.com>
|
|
*
|
|
* $FreeBSD$
|
|
* $Whistle: ng_pptpgre.h,v 1.3 1999/12/08 00:11:36 archie Exp $
|
|
*/
|
|
|
|
#ifndef _NETGRAPH_PPTPGRE_H_
|
|
#define _NETGRAPH_PPTPGRE_H_
|
|
|
|
/* Node type name and magic cookie */
|
|
#define NG_PPTPGRE_NODE_TYPE "pptpgre"
|
|
#define NGM_PPTPGRE_COOKIE 942783546
|
|
|
|
/* Hook names */
|
|
#define NG_PPTPGRE_HOOK_UPPER "upper" /* to upper layers */
|
|
#define NG_PPTPGRE_HOOK_LOWER "lower" /* to lower layers */
|
|
|
|
/* Configuration for a session */
|
|
struct ng_pptpgre_conf {
|
|
u_char enabled; /* enables traffic flow */
|
|
u_char enableDelayedAck;/* enables delayed acks */
|
|
u_int16_t cid; /* my call id */
|
|
u_int16_t peerCid; /* peer call id */
|
|
u_int16_t recvWin; /* peer recv window size */
|
|
u_int16_t peerPpd; /* peer packet processing delay
|
|
(in units of 1/10 of a second) */
|
|
};
|
|
|
|
/* Keep this in sync with the above structure definition */
|
|
#define NG_PPTPGRE_CONF_TYPE_INFO { \
|
|
{ \
|
|
{ "enabled", &ng_parse_int8_type }, \
|
|
{ "enableDelayedAck", &ng_parse_int8_type }, \
|
|
{ "cid", &ng_parse_int16_type }, \
|
|
{ "peerCid", &ng_parse_int16_type }, \
|
|
{ "recvWin", &ng_parse_int16_type }, \
|
|
{ "peerPpd", &ng_parse_int16_type }, \
|
|
{ NULL }, \
|
|
} \
|
|
}
|
|
|
|
/* Statistics struct */
|
|
struct ng_pptpgre_stats {
|
|
u_int32_t xmitPackets; /* number of GRE packets xmit */
|
|
u_int32_t xmitOctets; /* number of GRE octets xmit */
|
|
u_int32_t xmitLoneAcks; /* ack-only packets transmitted */
|
|
u_int32_t xmitDrops; /* xmits dropped due to full window */
|
|
u_int32_t xmitTooBig; /* xmits dropped because too big */
|
|
u_int32_t recvPackets; /* number of GRE packets rec'd */
|
|
u_int32_t recvOctets; /* number of GRE octets rec'd */
|
|
u_int32_t recvRunts; /* too short packets rec'd */
|
|
u_int32_t recvBadGRE; /* bogus packets rec'd (bad GRE hdr) */
|
|
u_int32_t recvBadAcks; /* bogus ack's rec'd in GRE header */
|
|
u_int32_t recvBadCID; /* pkts with unknown call ID rec'd */
|
|
u_int32_t recvOutOfOrder; /* packets rec'd out of order */
|
|
u_int32_t recvDuplicates; /* packets rec'd with duplicate seq # */
|
|
u_int32_t recvLoneAcks; /* ack-only packets rec'd */
|
|
u_int32_t recvAckTimeouts; /* times peer failed to ack in time */
|
|
};
|
|
|
|
/* Keep this in sync with the above structure definition */
|
|
#define NG_PPTPGRE_STATS_TYPE_INFO { \
|
|
{ \
|
|
{ "xmitPackets", &ng_parse_int32_type }, \
|
|
{ "xmitOctets", &ng_parse_int32_type }, \
|
|
{ "xmitLoneAcks", &ng_parse_int32_type }, \
|
|
{ "xmitDrops", &ng_parse_int32_type }, \
|
|
{ "xmitTooBig", &ng_parse_int32_type }, \
|
|
{ "recvPackets", &ng_parse_int32_type }, \
|
|
{ "recvOctets", &ng_parse_int32_type }, \
|
|
{ "recvRunts", &ng_parse_int32_type }, \
|
|
{ "recvBadGRE", &ng_parse_int32_type }, \
|
|
{ "recvBadAcks", &ng_parse_int32_type }, \
|
|
{ "recvBadCID", &ng_parse_int32_type }, \
|
|
{ "recvOutOfOrder", &ng_parse_int32_type }, \
|
|
{ "recvDuplicates", &ng_parse_int32_type }, \
|
|
{ "recvLoneAcks", &ng_parse_int32_type }, \
|
|
{ "recvAckTimeouts", &ng_parse_int32_type }, \
|
|
{ NULL } \
|
|
} \
|
|
}
|
|
|
|
/* Netgraph commands */
|
|
enum {
|
|
NGM_PPTPGRE_SET_CONFIG = 1, /* supply a struct ng_pptpgre_conf */
|
|
NGM_PPTPGRE_GET_CONFIG, /* returns a struct ng_pptpgre_conf */
|
|
NGM_PPTPGRE_GET_STATS, /* returns struct ng_pptpgre_stats */
|
|
NGM_PPTPGRE_CLR_STATS, /* clears stats */
|
|
NGM_PPTPGRE_GETCLR_STATS, /* returns & clears stats */
|
|
};
|
|
|
|
#endif /* _NETGRAPH_PPTPGRE_H_ */
|