[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH 2/6] docs: add pod variant of xl-network-configuration.5
Add source in pod format for xl-network-configuration.5 This removes the buildtime requirement for pandoc, and subsequently the need for ghc, in the chain for BuildRequires of xen.rpm. Signed-off-by: Olaf Hering <olaf@xxxxxxxxx> --- docs/man/xl-network-configuration.pod.5 | 250 ++++++++++++++++++++++++++++++++ 1 file changed, 250 insertions(+) create mode 100644 docs/man/xl-network-configuration.pod.5 diff --git a/docs/man/xl-network-configuration.pod.5 b/docs/man/xl-network-configuration.pod.5 new file mode 100644 index 0000000000..9fa373e20d --- /dev/null +++ b/docs/man/xl-network-configuration.pod.5 @@ -0,0 +1,250 @@ +=encoding utf8 + + +=head1 XL Network Configuration + + +=head2 Syntax Overview + +This document specifies the xl config file format vif configuration +option. It has the following form: + + vif = [ '<vifspec>', '<vifspec>', ... ] + +where each vifspec is in this form: + + [<key>=<value>|<flag>,] + +For example: + + 'mac=00:16:3E:74:3d:76,model=rtl8139,bridge=xenbr0' + 'mac=00:16:3E:74:34:32' + '' # The empty string + +These might be specified in the domain config file like this: + + vif = [ 'mac=00:16:3E:74:34:32', 'mac=00:16:3e:5f:48:e4,bridge=xenbr1' ] + +More formally, the string is a series of comma-separated keyword/value +pairs. All keywords are optional. + +Each device has a C<DEVID> which is its index within the vif list, starting from 0. + + +=head2 Keywords + + +=head2 mac + +If specified then this option specifies the MAC address inside the +guest of this VIF device. The value is a 48-bit number represented as +six groups of two hexadecimal digits, separated by colons (:). + +The default if this keyword is not specified is to be automatically +generate a MAC address inside the space assigned to Xen's +L<Organizationally Unique Identifier|http://en.wikipedia.org/wiki/Organizationally_Unique_Identifier> (00:16:3e). + +If you are choosing a MAC address then it is strongly recommend to +follow one of the following strategies: + +=over + +=item * + +Generate a random sequence of 6 byte, set the locally administered +bit (bit 2 of the first byte) and clear the multicast bit (bit 1 +of the first byte). In other words the first byte should have the +bit pattern xxxxxx10 (where x is a randomly generated bit) and the +remaining 5 bytes are randomly generated See +[http://en.wikipedia.org/wiki/MAC_address] for more details the +structure of a MAC address. + + +=item * + +Allocate an address from within the space defined by your +organization's OUI (if you have one) following your organization's +procedures for doing so. + + +=item * + +Allocate an address from within the space defined by Xen's OUI +(00:16:3e). Taking care not to clash with other users of the +physical network segment where this VIF will reside. + + +=back + +If you have an OUI for your own use then that is the preferred +strategy. Otherwise in general you should prefer to generate a random +MAC and set the locally administered bit since this allows for more +bits of randomness than using the Xen OUI. + + +=head2 bridge + +Specifies the name of the network bridge which this VIF should be +added to. The default is C<xenbr0>. The bridge must be configured using +your distribution's network configuration tools. See the L<wiki|http://wiki.xen.org/wiki/HostConfiguration/Networking> +for guidance and examples. + + +=head2 gatewaydev + +Specifies the name of the network interface which has an IP and which +is in the network the VIF should communicate with. This is used in the host +by the vif-route hotplug script. See L<wiki|http://wiki.xen.org/wiki/Vif-route> for guidance and +examples. + +NOTE: netdev is a deprecated alias of this option. + + +=head2 type + +This keyword is valid for HVM guests only. + +Specifies the type of device to valid values are: + +=over + +=item * + +C<ioemu> (default) -- this device will be provided as an emulate +device to the guest and also as a paravirtualised device which the +guest may choose to use instead if it has suitable drivers +available. + + +=item * + +C<vif> -- this device will be provided as a paravirtualised device +only. + + +=back + + +=head2 model + +This keyword is valid for HVM guest devices with C<type=ioemu> only. + +Specifies the type device to emulated for this guest. Valid values +are: + +=over + +=item * + +C<rtl8139> (default) -- Realtek RTL8139 + + +=item * + +C<e1000> -- Intel E1000 + + +=item * + +in principle any device supported by your device model + + +=back + + +=head2 vifname + +Specifies the backend device name for the virtual device. + +If the domain is an HVM domain then the associated emulated (tap) +device will have a "-emu" suffice added. + +The default name for the virtual device is C<vifDOMID.DEVID> where +C<DOMID> is the guest domain ID and C<DEVID> is the device +number. Likewise the default tap name is C<vifDOMID.DEVID-emu>. + + +=head2 script + +Specifies the hotplug script to run to configure this device (e.g. to +add it to the relevant bridge). Defaults to +C<XEN_SCRIPT_DIR/vif-bridge> but can be set to any script. Some example +scripts are installed in C<XEN_SCRIPT_DIR>. + + +=head2 ip + +Specifies the IP address for the device, the default is not to +specify an IP address. + +What, if any, effect this has depends on the hotplug script which is +configured. A typically behaviour (exhibited by the example hotplug +scripts) if set might be to configure firewall rules to allow only the +specified IP address to be used by the guest (blocking all others). + + +=head2 backend + +Specifies the backend domain which this device should attach to. This +defaults to domain 0. Specifying another domain requires setting up a +driver domain which is outside the scope of this document. + + +=head2 rate + +Specifies the rate at which the outgoing traffic will be limited to. +The default if this keyword is not specified is unlimited. + +The rate may be specified as "/s" or optionally "/s@". + +=over + +=item * + +C<RATE> is in bytes and can accept suffixes: + +=over + +=item * + +GB, MB, KB, B for bytes. + + +=item * + +Gb, Mb, Kb, b for bits. + + +=back + + + +=item * + +C<INTERVAL> is in microseconds and can accept suffixes: ms, us, s. +It determines the frequency at which the vif transmission credit +is replenished. The default is 50ms. + + +=back + +Vif rate limiting is credit-based. It means that for "1MB/s@20ms", the +available credit will be equivalent of the traffic you would have done +at "1MB/s" during 20ms. This will results in a credit of 20,000 bytes +replenished every 20,000 us. + +For example: + + 'rate=10Mb/s' -- meaning up to 10 megabits every second + 'rate=250KB/s' -- meaning up to 250 kilobytes every second + 'rate=1MB/s@20ms' -- meaning 20,000 bytes in every 20 millisecond period + +NOTE: The actual underlying limits of rate limiting are dependent +on the underlying netback implementation. + + +=head2 devid + +Specifies the devid manually instead of letting xl choose the lowest index available. + +NOTE: This should not be set unless you have a reason to. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx https://lists.xen.org/xen-devel
|
Lists.xenproject.org is hosted with RackSpace, monitoring our |