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rte_vhost_device_ops(3) DPDK rte_vhost_device_ops(3) NAME rte_vhost_device_ops SYNOPSIS #include <rte_vhost.h> Data Fields 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) Detailed Description Device and vring operations. Definition at line 277 of file rte_vhost.h. Field Documentation int(* new_device) (int vid) Add device. Definition at line 278 of file rte_vhost.h. void(* destroy_device) (int vid) Remove device. Definition at line 279 of file rte_vhost.h. int(* vring_state_changed) (int vid, uint16_t queue_id, int enable) triggered when a vring is enabled or disabled Definition at line 281 of file rte_vhost.h. int(* features_changed) (int vid, uint64_t features) 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. void(* guest_notified) (int vid) 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. bool(* guest_notify) (int vid, uint16_t queue_id) 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. Author Generated automatically by Doxygen for DPDK from the source code. Version 25.11.0 Thu Jun 11 2026 rte_vhost_device_ops(3)
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