linux_dsm_epyc7002/drivers/net/ethernet/socionext
Ilias Apalodimas 495de55f70 net: netsec: Add support for XDP frame size
This driver takes advantage of page_pool PP_FLAG_DMA_SYNC_DEV that
can help reduce the number of cache-lines that need to be flushed
when doing DMA sync for_device. Due to xdp_adjust_tail can grow the
area accessible to the by the CPU (can possibly write into), then max
sync length *after* bpf_prog_run_xdp() needs to be taken into account.

For XDP_TX action the driver is smart and does DMA-sync. When growing
tail this is still safe, because page_pool have DMA-mapped the entire
page size.

Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/bpf/158945336295.97035.15034759661036971024.stgit@firesoul
2020-05-14 21:21:54 -07:00
..
Kconfig net: netsec: Use page_pool API 2019-07-01 19:27:08 -07:00
Makefile
netsec.c net: netsec: Add support for XDP frame size 2020-05-14 21:21:54 -07:00
sni_ave.c net: socionext: Fix use correct return type for ndo_start_xmit() 2020-05-06 14:19:42 -07:00