net: ethernet: ti: cpsw: add ethtool channels support

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These ops allow to control number of channels driver is allowed to
work with at cpdma level. The maximum number of channels is 8 for
rx and 8 for tx. In dual_emac mode the h/w channels are shared
between two interfaces and changing number on one interface changes
number of channels on another.

How many channels are supported and enabled:
$ ethtool -l ethX

Change number of channels (up to 8)
$ ethtool -L ethX rx 6 tx 6

Per-channel statistic:
$ ethtool -S ethX

Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Reviewed-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Ivan Khoronzhuk 2016-08-22 21:18:28 +03:00 • committed by David S. Miller

parent 925d65e6d8

commit ce52c74457

1 changed files with 180 additions and 0 deletions

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drivers/net/ethernet/ti/cpsw.c

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