From: "Nikita V. Shirokov" <tehnerd@tehnerd.com>
To: Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>
Cc: netdev@vger.kernel.org, "Nikita V. Shirokov" <tehnerd@tehnerd.com>
Subject: [PATCH bpf-next v3 09/11] bpf: making bpf_prog_test run aware of possible data_end ptr change
Date: Tue, 17 Apr 2018 21:42:21 -0700 [thread overview]
Message-ID: <20180418044223.17685-10-tehnerd@tehnerd.com> (raw)
In-Reply-To: <20180418044223.17685-1-tehnerd@tehnerd.com>
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: Nikita V. Shirokov <tehnerd@tehnerd.com>
---
net/bpf/test_run.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/bpf/test_run.c b/net/bpf/test_run.c
index 2ced48662c1f..68c3578343b4 100644
--- a/net/bpf/test_run.c
+++ b/net/bpf/test_run.c
@@ -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);
--
2.15.1
next prev parent reply other threads:[~2018-04-18 13:22 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-18 4:42 [PATCH bpf-next v3 00/11] introduction of bpf_xdp_adjust_tail Nikita V. Shirokov
2018-04-18 4:42 ` [PATCH bpf-next v3 01/11] bpf: adding bpf_xdp_adjust_tail helper Nikita V. Shirokov
2018-04-18 17:01 ` Alexei Starovoitov
2018-04-18 4:42 ` [PATCH bpf-next v3 02/11] bpf: make generic xdp compatible w/ bpf_xdp_adjust_tail Nikita V. Shirokov
2018-04-18 4:42 ` [PATCH bpf-next v3 03/11] bpf: make mlx4 " Nikita V. Shirokov
2018-04-18 4:42 ` [PATCH bpf-next v3 04/11] bpf: make bnxt " Nikita V. Shirokov
2018-04-18 17:39 ` Michael Chan
2018-04-18 4:42 ` [PATCH bpf-next v3 05/11] bpf: make cavium thunder " Nikita V. Shirokov
2018-04-18 4:42 ` [PATCH bpf-next v3 06/11] bpf: make netronome nfp " Nikita V. Shirokov
2018-04-18 4:42 ` [PATCH bpf-next v3 07/11] bpf: make tun " Nikita V. Shirokov
2018-04-18 16:16 ` Michael S. Tsirkin
2018-04-18 4:42 ` [PATCH bpf-next v3 08/11] bpf: make virtio " Nikita V. Shirokov
2018-04-18 4:42 ` Nikita V. Shirokov [this message]
2018-04-18 4:42 ` [PATCH bpf-next v3 10/11] bpf: adding tests for bpf_xdp_adjust_tail Nikita V. Shirokov
2018-04-18 4:42 ` [PATCH bpf-next v3 11/11] bpf: add bpf_xdp_adjust_tail sample prog Nikita V. Shirokov
2018-04-18 22:05 ` [PATCH bpf-next v3 00/11] introduction of bpf_xdp_adjust_tail Daniel Borkmann
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