Song Yoong Siang wrote: > In current ping-pong design, xdp_hw_metadata will wait until the packet > transmition completely done, then only start to receive the next packet. > > The current sleep interval is 10ms, which is unnecessary large. Typically, > a NIC does not need such a long time to transmit a packet. Furthermore, > during this 10ms sleep time, the app is unable to receive incoming packets. > > Therefore, this commit reduce sleep interval to 10us, so that > xdp_hw_metadata able to support periodic packets with shorter interval. > 10us * 500 = 5ms should be enough for packet transmission and status > retrival. > > Signed-off-by: Song Yoong Siang <[email protected]> > --- > tools/testing/selftests/bpf/xdp_hw_metadata.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/tools/testing/selftests/bpf/xdp_hw_metadata.c > b/tools/testing/selftests/bpf/xdp_hw_metadata.c > index 878d68db0325..bdf5d8180067 100644 > --- a/tools/testing/selftests/bpf/xdp_hw_metadata.c > +++ b/tools/testing/selftests/bpf/xdp_hw_metadata.c > @@ -480,7 +480,7 @@ static int verify_metadata(struct xsk *rx_xsk, int rxq, > int server_fd, clockid_t > for (int j = 0; j < 500; j++) { > if (complete_tx(xsk, clock_id)) > break; > - usleep(10*1000); > + usleep(10); > } > } > } > -- > 2.34.1 >
Acked-by: John Fastabend <[email protected]>
