This patch initiate refactoring of Virtio PCI, by introducing
a new device structure for PCI-specific metadata.
Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Reviewed-by: Chenbo Xia <chenbo.xia@intel.com>
---
drivers/net/virtio/virtio_ethdev.c | 2 +-
drivers/net/virtio/virtio_pci.c | 2 ++
drivers/net/virtio/virtio_pci.h | 5 +++++
3 files changed, 8 insertions(+), 1 deletion(-)
@@ -2154,7 +2154,7 @@ static int eth_virtio_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
if (vdpa == 1)
return 1;
- return rte_eth_dev_pci_generic_probe(pci_dev, sizeof(struct virtio_hw),
+ return rte_eth_dev_pci_generic_probe(pci_dev, sizeof(struct virtio_pci_dev),
eth_virtio_dev_init);
}
@@ -689,6 +689,8 @@ virtio_read_caps(struct rte_pci_device *dev, struct virtio_hw *hw)
int
vtpci_init(struct rte_pci_device *dev, struct virtio_hw *hw)
{
+ RTE_BUILD_BUG_ON(offsetof(struct virtio_pci_dev, hw) != 0);
+
/*
* Try if we can succeed reading virtio pci caps, which exists
* only on modern pci device. If failed, we fallback to legacy
@@ -289,6 +289,11 @@ struct virtio_hw {
struct virtqueue **vqs;
};
+struct virtio_pci_dev {
+ struct virtio_hw hw;
+};
+
+#define virtio_pci_get_dev(hwp) container_of(hwp, struct virtio_pci_dev, hw)
/*
* While virtio_hw is stored in shared memory, this structure stores