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net/virtio: remove redundant MSI-X detection

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As we already change to use capability list to detect MSI-X, remove
the redundant MSI-X detection in legacy devices.

Signed-off-by: Jianfeng Tan <jianfeng.tan@intel.com>
Acked-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
This commit is contained in:
Jianfeng Tan 2017-04-27 07:35:38 +00:00 committed by Yuanhan Liu
parent a60a0c1507
commit ee1843bd89
1 changed files with 0 additions and 27 deletions
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27
drivers/net/virtio/virtio_pci.c
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@ -279,32 +279,6 @@ legacy_notify_queue(struct virtio_hw *hw, struct virtqueue *vq)
VIRTIO_PCI_QUEUE_NOTIFY);
}
#ifdef RTE_EXEC_ENV_LINUXAPP
static int
legacy_virtio_has_msix(const struct rte_pci_addr *loc)
{
DIR *d;
char dirname[PATH_MAX];
snprintf(dirname, sizeof(dirname),
"%s/" PCI_PRI_FMT "/msi_irqs", pci_get_sysfs_path(),
loc->domain, loc->bus, loc->devid, loc->function);
d = opendir(dirname);
if (d)
closedir(d);
return d != NULL;
}
#else
static int
legacy_virtio_has_msix(const struct rte_pci_addr *loc __rte_unused)
{
/* nic_uio does not enable interrupts, return 0 (false). */
return 0;
}
#endif
const struct virtio_pci_ops legacy_ops = {
.read_dev_cfg = legacy_read_dev_config,
.write_dev_cfg = legacy_write_dev_config,
@ -725,7 +699,6 @@ vtpci_init(struct rte_pci_device *dev, struct virtio_hw *hw)
}
virtio_hw_internal[hw->port_id].vtpci_ops = &legacy_ops;
hw->use_msix = legacy_virtio_has_msix(&dev->addr);
hw->modern = 0;
return 0;