X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=INSTALL.Linux;h=0d56da65d7c0a99fe6dc7918a46f9a7ea01c8d08;hb=refs%2Fheads%2Fvlan-maint;hp=e950c05197b868ee69fa02ec2796c6f490ce0b43;hpb=9f8bf569bd545930847d12d176b5ef0690f0c0f3;p=sliver-openvswitch.git diff --git a/INSTALL.Linux b/INSTALL.Linux index e950c0519..0d56da65d 100644 --- a/INSTALL.Linux +++ b/INSTALL.Linux @@ -3,7 +3,7 @@ This document describes how to build and install Open vSwitch on a generic Linux host. If you want to install Open vSwitch on a Citrix -XenServer version 5.5.0, see INSTALL.XenServer instead. +XenServer, see INSTALL.XenServer instead. This version of Open vSwitch may be built manually with "configure" and "make", as described below. You may also build Debian packages by @@ -227,9 +227,22 @@ Prerequisites section, follow the procedure below to build. module loading, please include the output from the "dmesg" and "modinfo" commands mentioned above. + There is an optional module parameter to openvswitch_mod.ko called + vlan_tso that enables TCP segmentation offload over VLANs on NICs + that support it. Many drivers do not expose support for TSO on VLANs + in a way that Open vSwitch can use but there is no way to detect + whether this is the case. If you know that your particular driver can + handle it (for example by testing sending large TCP packets over VLANs) + then passing in a value of 1 may improve performance. Modules built for + Linux kernels 2.6.37 and later, as well as specially patched versions + of earlier kernels, do not need this and do not have this parameter. If + you do not understand what this means or do not know if your driver + will work, do not set this. + 7. Initialize the configuration database using ovsdb-tool, e.g.: - % ovsdb-tool create /usr/local/etc/ovs-vswitchd.conf.db vswitchd/vswitch.ovsschema + % mkdir -p /usr/local/etc/openvswitch + % ovsdb-tool create /usr/local/etc/openvswitch/conf.db vswitchd/vswitch.ovsschema Startup ======= @@ -242,9 +255,9 @@ installation, above, to listen on a Unix domain socket, to connect to any managers specified in the database itself, and to use the SSL configuration in the database: - % ovsdb-server /usr/local/etc/ovs-vswitchd.conf.db \ + % ovsdb-server /usr/local/etc/openvswitch/conf.db \ --remote=punix:/usr/local/var/run/openvswitch/db.sock \ - --remote=db:Open_vSwitch,managers \ + --remote=db:Open_vSwitch,manager_options \ --private-key=db:SSL,private_key \ --certificate=db:SSL,certificate \ --bootstrap-ca-cert=db:SSL,ca_cert \ @@ -280,7 +293,7 @@ also upgrade the database schema: 1. Stop the Open vSwitch daemons, e.g.: - % ovs-kill ovsdb-server.pid ovs-vswitchd.pid + % kill `cd /usr/local/var/run && cat ovsdb-server.pid ovs-vswitchd.pid` 2. Install the new Open vSwitch release. @@ -294,7 +307,7 @@ also upgrade the database schema: - If you want to preserve the contents of your database, back it up first, then use "ovsdb-tool convert" to upgrade it, e.g.: - % ovsdb-tool convert /usr/local/etc/ovs-vswitchd.conf.db vswitchd/vswitch.ovsschema + % ovsdb-tool convert /usr/local/etc/openvswitch/conf.db vswitchd/vswitch.ovsschema 4. Start the Open vSwitch daemons as described under "Building and Installing Open vSwitch for Linux" above.