rte_vhost_device_ops - Man Page

int(*) new_device (int vid)
void(*) destroy_device (int vid)
int(*) vring_state_changed (int vid, uint16_t queue_id, int enable)
int(*) features_changed (int vid, uint64_t features)
void(*) guest_notified (int vid)
bool(*) guest_notify (int vid, uint16_t queue_id)

Add device​.

Definition at line 278 of file rte_vhost​.h​.

Remove device​.

Definition at line 279 of file rte_vhost​.h​.

triggered when a vring is enabled or disabled

Definition at line 281 of file rte_vhost​.h​.

Features could be changed after the feature negotiation​. For example, VHOST_F_LOG_ALL will be set/cleared at the start/end of live migration, respectively​. This callback is used to inform the application on such change​.

Definition at line 289 of file rte_vhost​.h​.

This callback gets called each time a guest gets notified about waiting packets​. This is the interrupt handling through the eventfd_write(callfd), which can be used for counting these "slow" syscalls​.

Definition at line 300 of file rte_vhost​.h​.

If this callback is registered, notification to the guest can be handled by the front-end calling rte_vhost_notify_guest()​. If it's not handled, 'false' should be returned​. This can be used to remove the "slow" eventfd_write() syscall from the datapath​.

Definition at line 308 of file rte_vhost​.h​.