net: enetc: implement ring reconfiguration procedure for PTP RX timestamping

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The crude enetc_stop() -> enetc_open() mechanism suffers from 2
problems:

1. improper error checking
2. it involves phylink_stop() -> phylink_start() which loses the link

Right now, the driver is prepared to offer a better alternative: a ring
reconfiguration procedure which takes the RX BD size (normal or
extended) as argument. It allocates new resources (failing if that
fails), stops the traffic, and assigns the new resources to the rings.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

...

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Vladimir Oltean 2023-01-18 01:02:31 +02:00 • committed by Jakub Kicinski

parent 598ca0d090

commit 5093406c78

1 changed files with 56 additions and 12 deletions

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68

drivers/net/ethernet/freescale/enetc/enetc.c

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