On 01/04/2017 06:01 AM, Andrew Lunn wrote:
> On Wed, Jan 04, 2017 at 08:38:03AM +0100, John Crispin wrote:
>> From: Andrew Lunn <and...@lunn.ch>
>>
>> Some boards have two CPU interfaces connected to the switch, e.g. WiFi
>> access points, with 1 port labeled WAN, 4 ports labeled lan1-lan4, and
>> two port connected to the SoC.
>>
>> This patch extends DSA to allows both CPU ports to be used. The "cpu"
>> node in the DSA tree can now have a phandle to the host interface it
>> connects to. Each user port can have a phandle to a cpu port which
>> should be used for traffic between the port and the CPU. Thus simple
>> load sharing over the two CPU ports can be achieved.
>>
>> Signed-off-by: John Crispin <j...@phrozen.org>
>> Signed-off-by: Andrew Lunn <and...@lunn.ch>
>> ---
>> include/net/dsa.h | 21 ++++++++++++++++++++-
>> net/dsa/dsa2.c | 36 ++++++++++++++++++++++++++++++------
>> net/dsa/dsa_priv.h | 5 +++++
>> net/dsa/slave.c | 27 ++++++++++++++++-----------
>> 4 files changed, 71 insertions(+), 18 deletions(-)
>>
>> diff --git a/include/net/dsa.h b/include/net/dsa.h
>> index b122196..f68180b 100644
>> --- a/include/net/dsa.h
>> +++ b/include/net/dsa.h
>> @@ -60,6 +60,8 @@ struct dsa_chip_data {
>> */
>> char *port_names[DSA_MAX_PORTS];
>> struct device_node *port_dn[DSA_MAX_PORTS];
>> + struct net_device *port_ethernet[DSA_MAX_PORTS];
>> + int port_cpu[DSA_MAX_PORTS];
>
> Hi John
>
> My proof of concept patches have "bit rotted" a bit. When implementing
> dsa2, i removed the use of dsa_chip_data, aka cd, from all the drivers
> and the new binding does not use it at all. I don't want to add it
> back again. When Florain removes the old binding in 6 months time, i
> expect dsa_chip_data and dsa_platform_data will be removed.
I am actually in the process of cleaning up my patches that add
platform_data support to net/dsa/dsa2.c this time with an user, and
hopefully a couple more after that, but that maintains the existing
struct dsa_chip_data as-is, no new additions are required, and this
would be purely for non-DT enabled platforms anyway.
--
Florian
