Masaru Nagai ae9819e339 ravb: Decrease TxFIFO depth of Q3 and Q2 to one ... Hardware has the CBS (Credit Based Shaper) which affects only Q3 and Q2. When updating the CBS settings, even if the driver does so after waiting for Tx DMA finished, there is a possibility that frame data still remains in TxFIFO. To avoid this, decrease TxFIFO depth of Q3 and Q2 to one. This patch has been exercised this using netperf TCP_MAERTS, TCP_STREAM and UDP_STREAM tests run on an Ebisu board. No performance change was detected, outside of noise in the tests, both in terms of throughput and CPU utilisation. Fixes: c156633f13 ("Renesas Ethernet AVB driver proper") Signed-off-by: Masaru Nagai <masaru.nagai.vx@renesas.com> Signed-off-by: Kazuya Mizuguchi <kazuya.mizuguchi.ks@renesas.com> [simon: updated changelog] Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: David S. Miller <davem@davemloft.net>		2019-03-07 09:31:05 -08:00
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Kconfig	ethernet: renesas: convert to SPDX identifiers	2018-09-10 10:11:53 -07:00
Makefile	ethernet: renesas: convert to SPDX identifiers	2018-09-10 10:11:53 -07:00
ravb.h	ravb: Clean up duplex handling	2018-11-23 11:14:47 -08:00
ravb_main.c	ravb: Decrease TxFIFO depth of Q3 and Q2 to one	2019-03-07 09:31:05 -08:00
ravb_ptp.c	ravb: do not write 1 to reserved bits	2018-09-18 20:09:57 -07:00
sh_eth.c	sh_eth: offload RX checksum on SH7763	2019-02-04 13:31:00 -08:00
sh_eth.h	sh_eth: RX checksum offload support	2019-02-04 13:31:00 -08:00