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Commit 587b80cc authored by Nikita V. Shirokov's avatar Nikita V. Shirokov Committed by Daniel Borkmann
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bpf: making bpf_prog_test run aware of possible data_end ptr change 



after introduction of bpf_xdp_adjust_tail helper packet length
could be changed not only if xdp->data pointer has been changed
but xdp->data_end as well. making bpf_prog_test_run aware of this
possibility

Signed-off-by: default avatarNikita V. Shirokov <tehnerd@tehnerd.com>
Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
parent 6870de43

net/bpf/test_run.c

+2 −1
Original line number Diff line number Diff line
@@ -170,7 +170,8 @@ int bpf_prog_test_run_xdp(struct bpf_prog *prog, const union bpf_attr *kattr, 
	xdp.rxq = &rxqueue->xdp_rxq;



	retval = bpf_test_run(prog, &xdp, repeat, &duration);

	if (xdp.data != data + XDP_PACKET_HEADROOM + NET_IP_ALIGN)

	if (xdp.data != data + XDP_PACKET_HEADROOM + NET_IP_ALIGN ||

	    xdp.data_end != xdp.data + size)

		size = xdp.data_end - xdp.data;

	ret = bpf_test_finish(kattr, uattr, xdp.data, size, retval, duration);

	kfree(data);