net: ethernet: ti: davinci_cpdma: add set rate for a channel

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The cpdma has 8 rate limited tx channels. This patch adds
ability for cpdma driver to use 8 tx h/w shapers. If at least one
channel is not rate limited then it must have higher number, this
is because the rate limited channels have to have higher priority
then not rate limited channels. The channel priority is set in low-hi
direction already, so that when a new channel is added with ethtool
and it doesn't have rate yet, it cannot affect on rate limited
channels. It can be useful for TSN streams and just in cases when
h/w rate limited channels are needed.

Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Ivan Khoronzhuk 2016-11-29 17:00:48 +02:00 • committed by David S. Miller

parent 0fc6432cc7

commit 8f32b90981

2 changed files with 289 additions and 45 deletions

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329

drivers/net/ethernet/ti/davinci_cpdma.c

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5

drivers/net/ethernet/ti/davinci_cpdma.h

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