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hw/virtio: Add support for VDPA network simulation devices

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This patch adds support for VDPA network simulation devices.
The device is developed based on virtio-net and tap backend,
and supports hardware live migration function.

For more details, please refer to "docs/system/devices/vdpa-net.rst"

Signed-off-by: Hao Chen <chenh@yusur.tech>
Message-Id: <20240221073802.2888022-1-chenh@yusur.tech>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Hao Chen 2024-02-21 15:38:02 +08:00 • committed by Michael S. Tsirkin
parent 043e127a12
commit cd341fd1ff
9 changed files with 399 additions and 3 deletions
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5
include/hw/virtio/virtio-pci.h
View file

@ -43,6 +43,7 @@ enum {
VIRTIO_PCI_FLAG_INIT_FLR_BIT,
VIRTIO_PCI_FLAG_AER_BIT,
VIRTIO_PCI_FLAG_ATS_PAGE_ALIGNED_BIT,
VIRTIO_PCI_FLAG_VDPA_BIT,
};
/* Need to activate work-arounds for buggy guests at vmstate load. */
@ -89,6 +90,9 @@ enum {
#define VIRTIO_PCI_FLAG_ATS_PAGE_ALIGNED \
(1 << VIRTIO_PCI_FLAG_ATS_PAGE_ALIGNED_BIT)
/* VDPA supported flags */
#define VIRTIO_PCI_FLAG_VDPA (1 << VIRTIO_PCI_FLAG_VDPA_BIT)
typedef struct {
MSIMessage msg;
int virq;
@ -140,6 +144,7 @@ struct VirtIOPCIProxy {
};
VirtIOPCIRegion regs[5];
};
VirtIOPCIRegion lm;
MemoryRegion modern_bar;
MemoryRegion io_bar;
uint32_t legacy_io_bar_idx;