eni_vdpa: add vDPA driver for Alibaba ENI

This patch adds a new vDPA driver for Alibaba ENI(Elastic Network
Interface) which is build upon virtio 0.9.5 specification.
And this driver doesn't support to run on BE host.

Signed-off-by: Wu Zongyong <wuzongyong@linux.alibaba.com>

drivers/vdpa/Kconfig

@@ -78,4 +78,12 @@ config VP_VDPA
 	help
 	  This kernel module bridges virtio PCI device to vDPA bus.
 
+config ALIBABA_ENI_VDPA
+	tristate "vDPA driver for Alibaba ENI"
+	select VIRTIO_PCI_LEGACY_LIB
+	depends on PCI_MSI
+	help
+	  VDPA driver for Alibaba ENI(Elastic Network Interface) which is build upon
+	  virtio 0.9.5 specification.
+
 endif # VDPA

drivers/vdpa/Makefile

@@ -5,3 +5,4 @@ obj-$(CONFIG_VDPA_USER) += vdpa_user/
 obj-$(CONFIG_IFCVF)    += ifcvf/
 obj-$(CONFIG_MLX5_VDPA) += mlx5/
 obj-$(CONFIG_VP_VDPA)    += virtio_pci/
+obj-$(CONFIG_ALIBABA_ENI_VDPA) += alibaba/

drivers/vdpa/alibaba/Makefile

@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0
+obj-$(CONFIG_ALIBABA_ENI_VDPA) += eni_vdpa.o
+