Libxdp function xsk_ring_prod__needs_wakeup

Definition

This function function checks if the kernel needs to be woken up to process the producer ring.

Note

It encouraged to enable the flag XDP_USE_NEED_WAKEUP in xdp_bind_flags provided in xsk_socket_create_*shared*

Note

If the function returns non-zero value, you should call recvmsg() when receiving, sendto() when sending, or poll()for both operations, although this last is slower than the other two.

Returns

return non-zero value if the kernel need to be wake up, else it will return 0.

Usage

int xsk_ring_prod__needs_wakeup(const struct xsk_ring_prod *r);

Example

Docs could be improved

This part of the docs is incomplete, contributions are very welcome