net: dsa: Mock-up driver
This patch adds support for a DSA mock-up driver which essentially does
the following:
- registers/unregisters 4 fixed PHYs to the slave network devices
- uses eth0 (configurable) as the master netdev
- registers the switch as a fixed MDIO device against the fixed MDIO bus
at address 31
- includes dynamic debug prints for dsa_switch_ops functions that can be
enabled to get call traces
This is a good way to test modular builds as well as exercise the DSA
APIs without requiring access to real hardware. This does not test the
data-path, although this could be added later on.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/dsa/Kconfig b/drivers/net/dsa/Kconfig
index 564b267..ba2e655 100644
--- a/drivers/net/dsa/Kconfig
+++ b/drivers/net/dsa/Kconfig
@@ -34,4 +34,12 @@
This enables support for the Qualcomm Atheros QCA8K Ethernet
switch chips.
+config NET_DSA_LOOP
+ tristate "DSA mock-up Ethernet switch chip support"
+ depends on NET_DSA
+ select FIXED_PHY
+ ---help---
+ This enables support for a fake mock-up switch chip which
+ exercises the DSA APIs.
+
endmenu