[CORE] Stack changes to add multiqueue hardware support API

Add the multiqueue hardware device support API to the core network
stack.  Allow drivers to allocate multiple queues and manage them at
the netdev level if they choose to do so.

Added a new field to sk_buff, namely queue_mapping, for drivers to
know which tx_ring to select based on OS classification of the flow.

Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index c251cca295c1..d4e39ff1545b 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -25,6 +25,14 @@ menuconfig NETDEVICES
 # that for each of the symbols.
 if NETDEVICES
 
+config NETDEVICES_MULTIQUEUE
+        bool "Netdevice multiple hardware queue support"
+        ---help---
+          Say Y here if you want to allow the network stack to use multiple
+          hardware TX queues on an ethernet device.
+
+          Most people will say N here.
+
 config IFB
         tristate "Intermediate Functional Block support"
         depends on NET_CLS_ACT