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net/virtio-user: support to report net status

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Originally, we did not report support of VIRTIO_NET_F_STATUS.
This feature is not reported by vhost backend, instead, it
is added/removed by QEMU in virtio PCI case.

We report the support of this feature so that following patch
will depend on this feature to enable LSC interrupt.

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 2017-03-31 19:44:57 +00:00 committed by Yuanhan Liu
parent 3d4fb6fd25
commit 35c4f85548
2 changed files with 8 additions and 4 deletions
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4
drivers/net/virtio/virtio_user/virtio_user_dev.c
View File

@ -139,6 +139,7 @@ virtio_user_start_device(struct virtio_user_dev *dev)
features &= ~(1ull << VIRTIO_NET_F_MAC);
/* Strip VIRTIO_NET_F_CTRL_VQ, as devices do not really need to know */
features &= ~(1ull << VIRTIO_NET_F_CTRL_VQ);
features &= ~(1ull << VIRTIO_NET_F_STATUS);
ret = dev->ops->send_request(dev, VHOST_USER_SET_FEATURES, &features);
if (ret < 0)
goto error;
@ -358,6 +359,9 @@ virtio_user_dev_init(struct virtio_user_dev *dev, char *path, int queues,
dev->device_features &= ~(1ull << VIRTIO_NET_F_CTRL_MAC_ADDR);
}
/* The backend will not report this feature, we add it explicitly */
dev->device_features |= (1ull << VIRTIO_NET_F_STATUS);
return 0;
}

8
drivers/net/virtio/virtio_user_ethdev.c
View File

@ -135,17 +135,17 @@ virtio_user_set_features(struct virtio_hw *hw, uint64_t features)
static uint8_t
virtio_user_get_isr(struct virtio_hw *hw __rte_unused)
{
/* When config interrupt happens, driver calls this function to query
* what kinds of change happen. Interrupt mode not supported for now.
/* rxq interrupts and config interrupt are separated in virtio-user,
* here we only report config change.
*/
return 0;
return VIRTIO_PCI_ISR_CONFIG;
}
static uint16_t
virtio_user_set_config_irq(struct virtio_hw *hw __rte_unused,
uint16_t vec __rte_unused)
{
return VIRTIO_MSI_NO_VECTOR;
return 0;
}
static uint16_t