diff options
| -rw-r--r-- | share/examples/netgraph/udp.tunnel | 53 | ||||
| -rw-r--r-- | sys/ddb/db_sysctl.c | 77 |
2 files changed, 130 insertions, 0 deletions
diff --git a/share/examples/netgraph/udp.tunnel b/share/examples/netgraph/udp.tunnel new file mode 100644 index 000000000000..39ae2bc600b2 --- /dev/null +++ b/share/examples/netgraph/udp.tunnel @@ -0,0 +1,53 @@ +#!/bin/sh +# $FreeBSD$ + +# This script sets up a virtual point-to-point WAN link between +# two subnets, using UDP packets as the ``WAN connection.'' +# The two subnets might be non-routable addresses behind a +# firewall. +# + +# Here define the local and remote inside networks as well +# as the local and remote outside IP addresses and UDP port +# number that will be used for the tunnel. +# +LOC_INTERIOR_IP=192.168.1.1 +LOC_EXTERIOR_IP=1.1.1.1 +REM_INTERIOR_IP=192.168.2.1 +REM_EXTERIOR_IP=2.2.2.2 +REM_INSIDE_NET=192.168.2.0 +UDP_TUNNEL_PORT=4028 + +# Create the interface node ``ng0'' if it doesn't exist already, +# otherwise just make sure it's not connected to anything. +# In FreeBSD, interfaces cannot be removed so it might already +# be there from before. +# +if ifconfig ng0 >/dev/null 2>&1; then + ifconfig ng0 inet down delete >/dev/null 2>&1 + ngctl shutdown ng0: +else + ngctl mkpeer iface dummy inet +fi + +# Attach a UDP socket to the ``inet'' hook of the interface node +# using the ng_ksocket(8) node type. +# +ngctl mkpeer ng0: ksocket inet inet/dgram/udp + +# Bind the UDP socket to the local external IP address and port +# +ngctl msg ng0:inet bind inet/${LOC_EXTERIOR_IP}:${UDP_TUNNEL_PORT} + +# Connect the UDP socket to the peer's external IP address and port +# +ngctl msg ng0:inet connect inet/${REM_EXTERIOR_IP}:${UDP_TUNNEL_PORT} + +# Configure the point-to-point interface +# +ifconfig ng0 ${LOC_INTERIOR_IP} ${REM_INTERIOR_IP} + +# Add a route to the peer's interior network via the tunnel +# +route add ${REM_INSIDE_NET} ${REM_INTERIOR_IP} + diff --git a/sys/ddb/db_sysctl.c b/sys/ddb/db_sysctl.c new file mode 100644 index 000000000000..5e067c259b59 --- /dev/null +++ b/sys/ddb/db_sysctl.c @@ -0,0 +1,77 @@ + +/* + * db_sysctl.c + * + * Copyright (c) 2000 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> + * + * $FreeBSD$ + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/kernel.h> +#include <sys/sysctl.h> +#include <sys/reboot.h> + +#define DESCRIPTION "Set to `ddb' or `gdb' to enter the kernel debugger" +#define READ_MODE "" +#define MODE_DDB "ddb" +#define MODE_GDB "gdb" + +static int +sysctl_debug_enter_debugger SYSCTL_HANDLER_ARGS +{ + char dmode[64]; + int error; + + strncpy(dmode, READ_MODE, sizeof(dmode) - 1); + dmode[sizeof(dmode) - 1] = '\0'; + error = sysctl_handle_string(oidp, &dmode[0], sizeof(dmode), req); + + if (error == 0 && req->newptr != NULL) { + if (strcmp(dmode, MODE_DDB) == 0) + boothowto &= ~RB_GDB; + else if (strcmp(dmode, MODE_GDB) == 0) + boothowto |= RB_GDB; + else + return EINVAL; + Debugger("debug.enter_debugger"); + } + return error; +} + +SYSCTL_PROC(_debug, OID_AUTO, enter_debugger, CTLTYPE_STRING | CTLFLAG_RW, + 0, 0, sysctl_debug_enter_debugger, "A", DESCRIPTION); + |