net: dsa: bcm_sf2: Keep copy of inserted rules

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We tried hard to use the hardware as a storage area, which made things
needlessly complex in that we had to both marshall and unmarshall the
ethtool_rx_flow_spec into what the CFP hardware understands but it did
not require any driver level allocations, so that was nice.

Keep a copy of the ethtool_rx_flow_spec rule we want to insert, and also
make sure we don't have a duplicate rule already. This greatly speeds up
the deletion time since we only need to clear the slice's valid bit and
not perform a full read.

This is a preparatory step for being able to restore rules upon system
resumption where the hardware loses its context partially or entirely.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Florian Fainelli 2018-11-06 12:58:37 -08:00 • committed by David S. Miller

parent 95772ec991

commit ae7a5aff78

3 changed files with 137 additions and 11 deletions

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2

drivers/net/dsa/bcm_sf2.c

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2

drivers/net/dsa/bcm_sf2.h

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144

drivers/net/dsa/bcm_sf2_cfp.c

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