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net/virtio: introduce PCI device metadata

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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>
This commit is contained in:
Maxime Coquelin 2021-01-26 11:16:01 +01:00 committed by Ferruh Yigit
parent 65832c82e6
commit f305ecbbb7
3 changed files with 8 additions and 1 deletions
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2
drivers/net/virtio/virtio_ethdev.c
View File

@ -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);
}

2
drivers/net/virtio/virtio_pci.c
View File

@ -689,6 +689,8 @@ next:
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

5
drivers/net/virtio/virtio_pci.h
View File

@ -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