path: root/arch/sparc
diff options
authorAaron Young <>2016-03-15 11:35:39 -0700
committerDavid S. Miller <>2016-03-18 19:33:00 -0400
commit5d01fa0c6bd84ddf1339a3fadfefecd2c28d472e (patch)
tree8e98abe74385c1d2993da5294d692bfa41675d16 /arch/sparc
parent67d0719f06ded9488311472b3d65ad37d992c332 (diff)
ldmvsw: Add ldmvsw.c driver code
Add ldmvsw.c driver Details: The ldmvsw driver very closely follows the sunvnet.c code and makes use of the sunvnet_common.c code for core functionality. A significant difference between sunvnet and ldmvsw driver is sunvnet creates a network interface for each vnet-port *parent* node in the MD while the ldmvsw driver creates a network interface for every vsw-port node in the Machine Description (MD). Therefore the netdev_priv() for sunvnet is a vnet structure while the netdev_priv() for ldmvsw is a vnet_port structure. Vnet_port structures allocated by ldmvsw have the vsw bit set. When finding the net_device associated with a port, the common code keys off this bit to use either the net_device found in the vnet_port or the net_device in the vnet structure (see the VNET_PORT_TO_NET_DEVICE() macro in sunvnet_common.h). This scheme allows the common code to work with both drivers with minimal changes. Similar to Xen, network interfaces created by the ldmvsw driver will always have a HW Addr (i.e. mac address) of FE:FF:FF:FF:FF:FF and each will be assigned the devname "vif<cfg_handle>.<port_id>" - where <cfg_handle> and <port_id> are a unique handle/port pair assigned to the associated vsw-port node in the MD. Signed-off-by: Aaron Young <> Signed-off-by: Rashmi Narasimhan <> Reviewed-by: Sowmini Varadhan <> Reviewed-by: Alexandre Chartre <> Signed-off-by: David S. Miller <>
Diffstat (limited to 'arch/sparc')
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/sparc/configs/sparc64_defconfig b/arch/sparc/configs/sparc64_defconfig
index 6b68f12f29db..04920ab8e292 100644
--- a/arch/sparc/configs/sparc64_defconfig
+++ b/arch/sparc/configs/sparc64_defconfig
@@ -102,6 +102,7 @@ CONFIG_SUNLANCE=m