nfp: flower: prevent offload if rhashtable insert fails

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For flow offload adds, if the rhash insert code fails, the flow will still
have been offloaded but the reference to it in the driver freed.

Re-order the offload setup calls to ensure that a flow will only be written
to FW if a kernel reference is held and stored in the rhashtable. Remove
this hashtable entry if the offload fails.

Fixes: c01d0efa51 ("nfp: flower: use rhashtable for flow caching")
Signed-off-by: John Hurley <john.hurley@netronome.com>
Reviewed-by: Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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John Hurley 2018-11-27 14:04:12 -08:00 • committed by David S. Miller

parent 1166494891

commit b5f0cf0834

1 changed files with 9 additions and 5 deletions

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drivers/net/ethernet/netronome/nfp/flower/offload.c

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