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 v2 09/11] bpf: making bpf_prog_test run aware of possible data_end ptr change
Date: Tue, 17 Apr 2018 21:29:49 -0700 [thread overview]
Message-ID: <20180418042951.17183-10-tehnerd@tehnerd.com> (raw)
In-Reply-To: <20180418042951.17183-1-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
---
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 6:05 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-18 4:29 [PATCH bpf-next v2 00/11] introduction of bpf_xdp_adjust_tail Nikita V. Shirokov
2018-04-18 4:29 ` [PATCH bpf-next v2 01/11] bpf: adding bpf_xdp_adjust_tail helper Nikita V. Shirokov
2018-04-18 16:56 ` Alexei Starovoitov
2018-04-18 4:29 ` [PATCH bpf-next v2 02/11] bpf: make generic xdp compatible w/ bpf_xdp_adjust_tail Nikita V. Shirokov
2018-04-18 12:48 ` Jesper Dangaard Brouer
2018-04-18 4:48 ` Nikita V. Shirokov
2018-04-18 4:29 ` [PATCH bpf-next v2 03/11] bpf: make mlx4 " Nikita V. Shirokov
2018-04-18 10:53 ` Tariq Toukan
2018-04-18 4:29 ` [PATCH bpf-next v2 04/11] bpf: make bnxt " Nikita V. Shirokov
2018-04-18 4:29 ` [PATCH bpf-next v2 05/11] bpf: make cavium thunder " Nikita V. Shirokov
2018-04-18 4:29 ` [PATCH bpf-next v2 06/11] bpf: make netronome nfp " Nikita V. Shirokov
2018-04-18 4:29 ` [PATCH bpf-next v2 07/11] bpf: make tun " Nikita V. Shirokov
2018-04-18 4:29 ` [PATCH bpf-next v2 08/11] bpf: make virtio " Nikita V. Shirokov
2018-04-18 4:29 ` Nikita V. Shirokov [this message]
2018-04-18 4:29 ` [PATCH bpf-next v2 10/11] bpf: adding tests for bpf_xdp_adjust_tail Nikita V. Shirokov
2018-04-18 4:29 ` [PATCH bpf-next v2 11/11] bpf: add bpf_xdp_adjust_tail sample prog Nikita V. Shirokov
2018-04-18 12:37 ` [PATCH bpf-next v2 00/11] introduction of bpf_xdp_adjust_tail Daniel Borkmann
2018-04-18 4:44 ` Nikita V. Shirokov
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