[I/OAT]: Setup the networking subsystem as a DMA client

Attempts to allocate per-CPU DMA channels

Signed-off-by: Chris Leech <christopher.leech@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 12 insertions, 0 deletions

diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig
index 0f15e769c6bc..30d021d1a07c 100644
--- a/drivers/dma/Kconfig
+++ b/drivers/dma/Kconfig
@@ -10,6 +10,18 @@ config DMA_ENGINE
           DMA engines offload copy operations from the CPU to dedicated
           hardware, allowing the copies to happen asynchronously.
 
+comment "DMA Clients"
+
+config NET_DMA
+        bool "Network: TCP receive copy offload"
+        depends on DMA_ENGINE && NET
+        default y
+        ---help---
+          This enables the use of DMA engines in the network stack to
+          offload receive copy-to-user operations, freeing CPU cycles.
+          Since this is the main user of the DMA engine, it should be enabled;
+          say Y here.
+
 comment "DMA Devices"
 
 config INTEL_IOATDMA