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author | David S. Miller <davem@davemloft.net> | 2016-09-22 02:51:48 -0400 |
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committer | David S. Miller <davem@davemloft.net> | 2016-09-22 02:51:48 -0400 |
commit | b80b8d7a974ea4888a0a598cec217a6c500a0cdb (patch) | |
tree | eae31e97372200fe825241bba2481174730b3764 /net/sctp/input.c | |
parent | f9616c35a0d786bc64fff4bf819d1e4984873367 (diff) | |
parent | 35b510e257f7516546a0a3f725f71dfbccc3f733 (diff) | |
download | op-kernel-dev-b80b8d7a974ea4888a0a598cec217a6c500a0cdb.zip op-kernel-dev-b80b8d7a974ea4888a0a598cec217a6c500a0cdb.tar.gz |
Merge branch 'mlx5e-xdp'
Tariq Toukan says:
====================
mlx5e XDP support
This series adds XDP support in mlx5e driver.
This includes the use cases: XDP_DROP, XDP_PASS, and XDP_TX.
Single stream performance tests show 16.5 Mpps for XDP_DROP,
and 12.4 Mpps for XDP_TX, with nice scalability for multiple streams/rings.
This rate of XDP_DROP is lower than the 32 Mpps we got in previous
implementation, when Striding RQ was used.
We moved to non-Striding RQ, as some XDP_TX requirements (like headroom,
packet-per-page) cannot be satisfied with the current Striding RQ HW,
and we decided to fully support both DROP/TX.
Few directions are considered in order to enable the faster rate for XDP_DROP,
e.g a possibility for users to enable Striding RQ so they choose optimized
XDP_DROP on the price of partial XDP_TX functionality, or some HW changes.
Series generated against net-next commit:
cf714ac147e0 'ipvlan: Fix dependency issue'
Thanks,
Tariq
V2:
* patch 8:
- when XDP_TX fails, call mlx5e_page_release and drop the packet.
- update xdp_tx counter within mlx5e_xmit_xdp_frame.
(mlx5e_xmit_xdp_frame return value becomes obsolete, change it to void)
- drop the packet for unknown XDP return code.
* patch 9:
- use a boolean for xdp_doorbell in SQ struct, instead of dragging it
throughout the functions calls.
- handle doorbell and counters within mlx5e_xmit_xdp_frame.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp/input.c')
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