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-rw-r--r--microkernel/mach/gnumach/ports/xen/internals.mdwn14
-rw-r--r--microkernel/mach/gnumach/ports/xen/networking_configuration.mdwn105
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diff --git a/microkernel/mach/gnumach/ports/xen/internals.mdwn b/microkernel/mach/gnumach/ports/xen/internals.mdwn
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+[[meta copyright="Copyright © 2008 Free Software Foundation, Inc."]]
+
+[[meta license="""[[toggle id="license" text="GFDL 1.2+"]][[toggleable
+id="license" text="Permission is granted to copy, distribute and/or modify this
+document under the terms of the GNU Free Documentation License, Version 1.2 or
+any later version published by the Free Software Foundation; with no Invariant
+Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license
+is included in the section entitled
+[[GNU_Free_Documentation_License|/fdl]]."]]"""]]
+
+The port does use Xen's para-virtualized interface for device (ide, network,
+etc.) access.
+
+[[Virtualization]].
diff --git a/microkernel/mach/gnumach/ports/xen/networking_configuration.mdwn b/microkernel/mach/gnumach/ports/xen/networking_configuration.mdwn
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+[[meta copyright="Copyright © 2008 Free Software Foundation, Inc."]]
+
+[[meta license="""[[toggle id="license" text="GFDL 1.2+"]][[toggleable
+id="license" text="Permission is granted to copy, distribute and/or modify this
+document under the terms of the GNU Free Documentation License, Version 1.2 or
+any later version published by the Free Software Foundation; with no Invariant
+Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license
+is included in the section entitled
+[[GNU_Free_Documentation_License|/fdl]]."]]"""]]
+
+[[toc ]]
+
+The Xen dom0 infrastructure provides for a bridged networking setup using shell
+scripts to configure the bridging device properly and attach the domUs' virtual
+interfaces to the bridge. However, we've [seen
+problems](http://lists.gnu.org/archive/html/bug-hurd/2008-08/msg00023.html)
+when using this approach, so to [solve these
+issues](http://lists.gnu.org/archive/html/bug-hurd/2008-09/msg00071.html),
+instead suggest the following configuration method (to achieve the same thing).
+
+This is for a Debian dom0.
+
+# */etc/network/interfaces*
+
+Comment out everything referencing your physical devices. Add this:
+
+ auto br0
+ iface br0 inet dhcp
+ bridge_ports regex (eth|vif).* noregex
+
+... or if you want to do the manual configuration dance:
+
+ auto br0
+ iface br0 inet static
+ bridge_ports regex (eth|vif).* noregex
+ address 192.168.10.60
+ netmask 255.255.255.0
+ [...]
+
+This needs a version of the `bridge-utils` package more recent than the current
+Debian stable one ([[debbug 405215]]). (It's trivial to rebuild the `dpkg` of,
+e.g., the Debian testing one on Debian stable.)
+
+# */etc/xen/xend-config.sxp*
+
+Make sure that only `(network-script network-dummy)` and `(vif-script
+vif-bridge)` are activated and all other `(network-script network-WHATEVER)`,
+respective `(vif-script vif-WHATEVER)` are commented out.
+
+
+# Sample configuration files on Debian Lenny
+
+## /etc/xen/hurd on dom0
+
+ kernel = "/boot/gnumach-xen"
+ memory = 256
+ disk = ['phy:sda5,hda,w']
+ extra = "root=device:hd0"
+ vif = [ 'mac=00:16:3e:00:00:00, bridge=br0' ]
+ ramdisk = "/boot/hurd-modules"
+
+/dev/sda5 is an extended partition. br0 is bridge interface on dom0.
+
+## /etc/xen/xend-config.sxp on dom0
+
+ (network-script 'network-bridge netdev=br0')
+ (dom0-min-mem 196)
+ (dom0-cpus 0)
+ (vncpasswd '')
+
+## /etc/network/interfaces on dom0
+
+ auto br0
+ iface br0 inet static
+ address 192.168.1.211
+ network 192.168.1.0
+ netmask 255.255.255.0
+ broadcast 192.168.1.255
+ gateway 192.168.1.1
+ bridge_ports eth1
+
+eth1 is the interface that is connected to the Internet on the LAN:
+
+## Doing settrans on domU
+
+ settrans -fgap /servers/socket/2 /hurd/pfinet -i eth0 -a 192.168.1.210 -g 192.168.1.1 -m 255.255.255.0
+
+## /sbin/ifconfig on dom0
+
+ br0 Link encap:Ethernet HWaddr 00:19:d1:2e:06:33
+ inet addr:192.168.1.211 Bcast:192.168.1.255 Mask:255.255.255.0
+ inet6 addr: fe80::219:d1ff:fe2e:633/64 Scope:Link
+ UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
+ RX packets:14187 errors:0 dropped:0 overruns:0 frame:0
+ TX packets:9214 errors:0 dropped:0 overruns:0 carrier:0
+ collisions:0 txqueuelen:0
+ RX bytes:936563 (914.6 KiB) TX bytes:746184 (728.6 KiB)
+
+ eth1 Link encap:Ethernet HWaddr 00:19:d1:2e:06:33
+ inet6 addr: fe80::219:d1ff:fe2e:633/64 Scope:Link
+ UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
+ RX packets:34339 errors:0 dropped:0 overruns:0 frame:0
+ TX packets:18526 errors:0 dropped:0 overruns:0 carrier:0
+ collisions:0 txqueuelen:1000
+ RX bytes:3019251 (2.8 MiB) TX bytes:1453672 (1.3 MiB)