|author||Lennert Buytenhek <email@example.com>||2008-10-07 13:44:02 +0000|
|committer||David S. Miller <firstname.lastname@example.org>||2008-10-08 17:15:19 -0700|
net: Distributed Switch Architecture protocol support
Distributed Switch Architecture is a protocol for managing hardware switch chips. It consists of a set of MII management registers and commands to configure the switch, and an ethernet header format to signal which of the ports of the switch a packet was received from or is intended to be sent to. The switches that this driver supports are typically embedded in access points and routers, and a typical setup with a DSA switch looks something like this: +-----------+ +-----------+ | | RGMII | | | +-------+ +------ 1000baseT MDI ("WAN") | | | 6-port +------ 1000baseT MDI ("LAN1") | CPU | | ethernet +------ 1000baseT MDI ("LAN2") | |MIImgmt| switch +------ 1000baseT MDI ("LAN3") | +-------+ w/5 PHYs +------ 1000baseT MDI ("LAN4") | | | | +-----------+ +-----------+ The switch driver presents each port on the switch as a separate network interface to Linux, polls the switch to maintain software link state of those ports, forwards MII management interface accesses to those network interfaces (e.g. as done by ethtool) to the switch, and exposes the switch's hardware statistics counters via the appropriate Linux kernel interfaces. This initial patch supports the MII management interface register layout of the Marvell 88E6123, 88E6161 and 88E6165 switch chips, and supports the "Ethertype DSA" packet tagging format. (There is no officially registered ethertype for the Ethertype DSA packet format, so we just grab a random one. The ethertype to use is programmed into the switch, and the switch driver uses the value of ETH_P_EDSA for this, so this define can be changed at any time in the future if the one we chose is allocated to another protocol or if Ethertype DSA gets its own officially registered ethertype, and everything will continue to work.) Signed-off-by: Lennert Buytenhek <email@example.com> Tested-by: Nicolas Pitre <firstname.lastname@example.org> Tested-by: Byron Bradley <email@example.com> Tested-by: Tim Ellis <firstname.lastname@example.org> Tested-by: Peter van Valderen <email@example.com> Tested-by: Dirk Teurlings <firstname.lastname@example.org> Signed-off-by: David S. Miller <email@example.com>
Diffstat (limited to 'net/dsa/Kconfig')
1 files changed, 31 insertions, 0 deletions
diff --git a/net/dsa/Kconfig b/net/dsa/Kconfig
new file mode 100644
@@ -0,0 +1,31 @@
+ bool "Distributed Switch Architecture support"
+ default n
+ depends on EXPERIMENTAL
+ This allows you to use hardware switch chips that use
+ the Distributed Switch Architecture.
+# tagging formats
+ default n
+# switch drivers
+ default n
+ bool "Marvell 88E6123/6161/6165 ethernet switch chip support"
+ select NET_DSA_MV88E6XXX
+ select NET_DSA_TAG_EDSA
+ This enables support for the Marvell 88E6123/6161/6165
+ ethernet switch chips.