Documentation: net: dsa: b53: Describe b53 configuration
Document the different needs of documentation for the b53 driver. Signed-off-by: Benedikt Spranger <b.spranger@linutronix.de> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Benedikt Spranger
David S. Miller
parent
58dd7a8d9d
commit
ff2d339375
183
Documentation/networking/dsa/b53.rst
Normal file
183
Documentation/networking/dsa/b53.rst
Normal file
@ -0,0 +1,183 @@
|
||||
.. SPDX-License-Identifier: GPL-2.0
|
||||
|
||||
==========================================
|
||||
Broadcom RoboSwitch Ethernet switch driver
|
||||
==========================================
|
||||
|
||||
The Broadcom RoboSwitch Ethernet switch family is used in quite a range of
|
||||
xDSL router, cable modems and other multimedia devices.
|
||||
|
||||
The actual implementation supports the devices BCM5325E, BCM5365, BCM539x,
|
||||
BCM53115 and BCM53125 as well as BCM63XX.
|
||||
|
||||
Implementation details
|
||||
======================
|
||||
|
||||
The driver is located in ``drivers/net/dsa/b53/`` and is implemented as a
|
||||
DSA driver; see ``Documentation/networking/dsa/dsa.rst`` for details on the
|
||||
subsystem and what it provides.
|
||||
|
||||
The switch is, if possible, configured to enable a Broadcom specific 4-bytes
|
||||
switch tag which gets inserted by the switch for every packet forwarded to the
|
||||
CPU interface, conversely, the CPU network interface should insert a similar
|
||||
tag for packets entering the CPU port. The tag format is described in
|
||||
``net/dsa/tag_brcm.c``.
|
||||
|
||||
The configuration of the device depends on whether or not tagging is
|
||||
supported.
|
||||
|
||||
The interface names and example network configuration are used according the
|
||||
configuration described in the :ref:`dsa-config-showcases`.
|
||||
|
||||
Configuration with tagging support
|
||||
----------------------------------
|
||||
|
||||
The tagging based configuration is desired. It is not specific to the b53
|
||||
DSA driver and will work like all DSA drivers which supports tagging.
|
||||
|
||||
See :ref:`dsa-tagged-configuration`.
|
||||
|
||||
Configuration without tagging support
|
||||
-------------------------------------
|
||||
|
||||
Older models (5325, 5365) support a different tag format that is not supported
|
||||
yet. 539x and 531x5 require managed mode and some special handling, which is
|
||||
also not yet supported. The tagging support is disabled in these cases and the
|
||||
switch need a different configuration.
|
||||
|
||||
The configuration slightly differ from the :ref:`dsa-vlan-configuration`.
|
||||
|
||||
The b53 tags the CPU port in all VLANs, since otherwise any PVID untagged
|
||||
VLAN programming would basically change the CPU port's default PVID and make
|
||||
it untagged, undesirable.
|
||||
|
||||
In difference to the configuration described in :ref:`dsa-vlan-configuration`
|
||||
the default VLAN 1 has to be removed from the slave interface configuration in
|
||||
single port and gateway configuration, while there is no need to add an extra
|
||||
VLAN configuration in the bridge showcase.
|
||||
|
||||
single port
|
||||
~~~~~~~~~~~
|
||||
The configuration can only be set up via VLAN tagging and bridge setup.
|
||||
By default packages are tagged with vid 1:
|
||||
|
||||
.. code-block:: sh
|
||||
|
||||
# tag traffic on CPU port
|
||||
ip link add link eth0 name eth0.1 type vlan id 1
|
||||
ip link add link eth0 name eth0.2 type vlan id 2
|
||||
ip link add link eth0 name eth0.3 type vlan id 3
|
||||
|
||||
# The master interface needs to be brought up before the slave ports.
|
||||
ip link set eth0 up
|
||||
ip link set eth0.1 up
|
||||
ip link set eth0.2 up
|
||||
ip link set eth0.3 up
|
||||
|
||||
# bring up the slave interfaces
|
||||
ip link set wan up
|
||||
ip link set lan1 up
|
||||
ip link set lan2 up
|
||||
|
||||
# create bridge
|
||||
ip link add name br0 type bridge
|
||||
|
||||
# activate VLAN filtering
|
||||
ip link set dev br0 type bridge vlan_filtering 1
|
||||
|
||||
# add ports to bridges
|
||||
ip link set dev wan master br0
|
||||
ip link set dev lan1 master br0
|
||||
ip link set dev lan2 master br0
|
||||
|
||||
# tag traffic on ports
|
||||
bridge vlan add dev lan1 vid 2 pvid untagged
|
||||
bridge vlan del dev lan1 vid 1
|
||||
bridge vlan add dev lan2 vid 3 pvid untagged
|
||||
bridge vlan del dev lan2 vid 1
|
||||
|
||||
# configure the VLANs
|
||||
ip addr add 192.0.2.1/30 dev eth0.1
|
||||
ip addr add 192.0.2.5/30 dev eth0.2
|
||||
ip addr add 192.0.2.9/30 dev eth0.3
|
||||
|
||||
# bring up the bridge devices
|
||||
ip link set br0 up
|
||||
|
||||
|
||||
bridge
|
||||
~~~~~~
|
||||
|
||||
.. code-block:: sh
|
||||
|
||||
# tag traffic on CPU port
|
||||
ip link add link eth0 name eth0.1 type vlan id 1
|
||||
|
||||
# The master interface needs to be brought up before the slave ports.
|
||||
ip link set eth0 up
|
||||
ip link set eth0.1 up
|
||||
|
||||
# bring up the slave interfaces
|
||||
ip link set wan up
|
||||
ip link set lan1 up
|
||||
ip link set lan2 up
|
||||
|
||||
# create bridge
|
||||
ip link add name br0 type bridge
|
||||
|
||||
# activate VLAN filtering
|
||||
ip link set dev br0 type bridge vlan_filtering 1
|
||||
|
||||
# add ports to bridge
|
||||
ip link set dev wan master br0
|
||||
ip link set dev lan1 master br0
|
||||
ip link set dev lan2 master br0
|
||||
ip link set eth0.1 master br0
|
||||
|
||||
# configure the bridge
|
||||
ip addr add 192.0.2.129/25 dev br0
|
||||
|
||||
# bring up the bridge
|
||||
ip link set dev br0 up
|
||||
|
||||
gateway
|
||||
~~~~~~~
|
||||
|
||||
.. code-block:: sh
|
||||
|
||||
# tag traffic on CPU port
|
||||
ip link add link eth0 name eth0.1 type vlan id 1
|
||||
ip link add link eth0 name eth0.2 type vlan id 2
|
||||
|
||||
# The master interface needs to be brought up before the slave ports.
|
||||
ip link set eth0 up
|
||||
ip link set eth0.1 up
|
||||
ip link set eth0.2 up
|
||||
|
||||
# bring up the slave interfaces
|
||||
ip link set wan up
|
||||
ip link set lan1 up
|
||||
ip link set lan2 up
|
||||
|
||||
# create bridge
|
||||
ip link add name br0 type bridge
|
||||
|
||||
# activate VLAN filtering
|
||||
ip link set dev br0 type bridge vlan_filtering 1
|
||||
|
||||
# add ports to bridges
|
||||
ip link set dev wan master br0
|
||||
ip link set eth0.1 master br0
|
||||
ip link set dev lan1 master br0
|
||||
ip link set dev lan2 master br0
|
||||
|
||||
# tag traffic on ports
|
||||
bridge vlan add dev wan vid 2 pvid untagged
|
||||
bridge vlan del dev wan vid 1
|
||||
|
||||
# configure the VLANs
|
||||
ip addr add 192.0.2.1/30 dev eth0.2
|
||||
ip addr add 192.0.2.129/25 dev br0
|
||||
|
||||
# bring up the bridge devices
|
||||
ip link set br0 up
|
||||
@ -6,6 +6,7 @@ Distributed Switch Architecture
|
||||
:maxdepth: 1
|
||||
|
||||
dsa
|
||||
b53
|
||||
bcm_sf2
|
||||
lan9303
|
||||
sja1105
|
||||
|
||||
Loading…
Reference in New Issue
Block a user