This patch series adds AF_XDP support socionext netsec driver
In addition the new dma allocation scheme offers a 10% boost on Rx
pps rate using 64b packets
- patch [1/2]: Use a different allocation scheme for Rx DMA buffers to
prepare the driver for AF_XDP support
- patch [2/2]: Add XDP support without zero-copy
test and performance numbers (64b packets):
-------------------------------------------
- Normal SKBs on Rx: ~217kpps
test: pktgen -> intel i210 -> netsec -> XDP_TX/XDP_REDIRECT
- XDP_TX: 320kpps
- XDP_REDIRECT: 320kpps
qemu -> pktgen -> virtio -> ndo_xdp_xmit -> netsec
- ndo_xdp_xmit: Could not send more than 120kpps. Interface forwarded that
with success
Changes since v2:
- Always allocate Rx buffers with XDP_PACKET_HEADROOM
Björn Töpel:
- Added locking in the Tx queue
Jesper Dangaard Brouer:
- Added support for .ndo_xdp_xmit
- XDP_TX does not flush every packet
Changes since v1:
- patch [2/2]:
Toshiaki Makita:
- Added XDP_PACKET_HEADROOM
- Fixed a bug on XDP_PASS case
- Using extact for error messaging instead of netdev_warn, when
trying to setup XDP
Ilias Apalodimas (2):
net: socionext: different approach on DMA
net: socionext: add XDP support
drivers/net/ethernet/socionext/netsec.c | 541 +++++++++++++++++++++++++-------
1 file changed, 426 insertions(+), 115 deletions(-)
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2.7.4
