Merge branch 'sfc-ARFS-fixes'

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Edward Cree says:

====================
sfc: ARFS fixes

Three issues introduced by my recent asynchronous filter handling changes:
1. The old filter_rfs_insert would replace a matching filter of equal
   priority; we need to pass the appropriate argument to filter_insert to
   make it do the same.
2. We're lying to the kernel with our return value from ndo_rx_flow_steer,
   so we need to lie consistently when calling rps_may_expire_flow.  This
   is only a partial fix, as the lie still prevents us from steering
   multiple flows with the same ID to different queues; a proper fix that
   stops us lying at all will hopefully follow later.
3. It's possible to cause the kernel to hammer ndo_rx_flow_steer very
   hard, so make sure we don't build up too huge a backlog of workitems.

Possibly it would be better to fix #3 on the kernel side; I have a patch
 which I think does that but it's not a regression in 4.17 so isn't 'net'
 material.
There's also the issue that we come up in the bad configuration that
 triggers #3 by default, but that too is a problem for another time.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

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David S. Miller 2018-04-14 15:39:53 -04:00

parent c5042dacec f993740ee0

commit d6606bcc6d

4 changed files with 58 additions and 32 deletions

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3

drivers/net/ethernet/sfc/ef10.c

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drivers/net/ethernet/sfc/farch.c

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25

drivers/net/ethernet/sfc/net_driver.h

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60

drivers/net/ethernet/sfc/rx.c

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