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Diffstat (limited to 'INSTALL.md')
| -rw-r--r-- | INSTALL.md | 43 |
1 files changed, 2 insertions, 41 deletions
diff --git a/INSTALL.md b/INSTALL.md index 9c96bbe0f..9dadcee53 100644 --- a/INSTALL.md +++ b/INSTALL.md @@ -63,23 +63,13 @@ install the following: - A supported Linux kernel version. Please refer to [README.md] for a list of supported versions. - The Open vSwitch datapath requires bridging support - (CONFIG_BRIDGE) to be built as a kernel module. (This is common - in kernels provided by Linux distributions.) The bridge module - must not be loaded or in use. If the bridge module is running - (check with "lsmod | grep bridge"), you must remove it ("rmmod - bridge") before starting the datapath. - For optional support of ingress policing, you must enable kernel configuration options NET_CLS_BASIC, NET_SCH_INGRESS, and NET_ACT_POLICE, either built-in or as modules. (NET_CLS_POLICE is obsolete and not needed.) - To use GRE tunneling on Linux 2.6.37 or newer, kernel support - for GRE demultiplexing (CONFIG_NET_IPGRE_DEMUX) must be compiled - in or available as a module. Also, on kernels before 3.11, the - ip_gre module, for GRE tunnels over IP (NET_IPGRE), must not be - loaded or compiled in. + On kernels before 3.11, the ip_gre module, for GRE tunnels over IP + (NET_IPGRE), must not be loaded or compiled in. To configure HTB or HFSC quality of service with Open vSwitch, you must enable the respective configuration options. @@ -301,23 +291,6 @@ Building the Sources If the `modprobe` operation fails, look at the last few kernel log messages (e.g. with `dmesg | tail`): - - The message "openvswitch: exports duplicate symbol - br_should_route_hook (owned by bridge)" means that the bridge - module is loaded. Run `/sbin/rmmod bridge` to remove it. - - If `/sbin/rmmod bridge` fails with "ERROR: Module bridge does - not exist in /proc/modules", then the bridge is compiled into - the kernel, rather than as a module. Open vSwitch does not - support this configuration (see "Build Requirements", above). - - - The message "openvswitch: exports duplicate symbol - dp_ioctl_hook (owned by ofdatapath)" means that the ofdatapath - module from the OpenFlow reference implementation is loaded. - Run `/sbin/rmmod ofdatapath` to remove it. (You might have to - delete any existing datapaths beforehand, using the "dpctl" - program included with the OpenFlow reference implementation. - "ovs-dpctl" will not work.) - - Otherwise, the most likely problem is that Open vSwitch was built for a kernel different from the one into which you are trying to load it. Run `modinfo` on openvswitch.ko and on @@ -335,18 +308,6 @@ Building the Sources module loading, please include the output from the `dmesg` and `modinfo` commands mentioned above. -There is an optional module parameter to openvswitch.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. - 6. Initialize the configuration database using ovsdb-tool, e.g.: `% mkdir -p /usr/local/etc/openvswitch` |