+static void
+rx_syscall_handler(struct xsk_ring_prod *q, uint32_t busy_budget,
+ struct pollfd *fds, struct xsk_socket *xsk)
+{
+ /* we can assume a kernel >= 5.11 is in use if busy polling is enabled
+ * and thus we can safely use the recvfrom() syscall which is only
+ * supported for AF_XDP sockets in kernels >= 5.11.
+ */
+ if (busy_budget) {
+ (void)recvfrom(xsk_socket__fd(xsk), NULL, 0,
+ MSG_DONTWAIT, NULL, NULL);
+ return;
+ }
+
+ if (xsk_ring_prod__needs_wakeup(q))
+ (void)poll(fds, 1, 1000);
+}