From: "Nikita V. Shirokov" <tehnerd@tehnerd.com>
To: Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Michael Chan <michael.chan@broadcom.com>
Cc: netdev@vger.kernel.org, "Nikita V. Shirokov" <tehnerd@tehnerd.com>
Subject: [PATCH bpf-next v3 04/11] bpf: make bnxt compatible w/ bpf_xdp_adjust_tail
Date: Tue, 17 Apr 2018 21:42:16 -0700 [thread overview]
Message-ID: <20180418044223.17685-5-tehnerd@tehnerd.com> (raw)
In-Reply-To: <20180418044223.17685-1-tehnerd@tehnerd.com>
w/ bpf_xdp_adjust_tail helper xdp's data_end pointer could be changed as
well (only "decrease" of pointer's location is going to be supported).
changing of this pointer will change packet's size.
for bnxt driver we will just calculate packet's length unconditionally
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Nikita V. Shirokov <tehnerd@tehnerd.com>
---
drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
index 1389ab5e05df..1f0e872d0667 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
@@ -113,10 +113,10 @@ bool bnxt_rx_xdp(struct bnxt *bp, struct bnxt_rx_ring_info *rxr, u16 cons,
if (tx_avail != bp->tx_ring_size)
*event &= ~BNXT_RX_EVENT;
+ *len = xdp.data_end - xdp.data;
if (orig_data != xdp.data) {
offset = xdp.data - xdp.data_hard_start;
*data_ptr = xdp.data_hard_start + offset;
- *len = xdp.data_end - xdp.data;
}
switch (act) {
case XDP_PASS:
--
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 ` Nikita V. Shirokov [this message]
2018-04-18 17:39 ` [PATCH bpf-next v3 04/11] bpf: make bnxt " 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 ` [PATCH bpf-next v3 09/11] bpf: making bpf_prog_test run aware of possible data_end ptr change Nikita V. Shirokov
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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