flowcache: Avoid OOM condition under preasure

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We can hit an OOM condition if we are under presure because
we can not free the entries in gc_list fast enough. So add
a counter for the not yet freed entries in the gc_list and
refuse new allocations if the value is too high.

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>

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This commit is contained in:

Steffen Klassert 2016-02-22 10:40:07 +01:00

parent aac8d3c282

commit 6ad3122a08

2 changed files with 14 additions and 1 deletions

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1

include/net/netns/xfrm.h

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14

net/core/flow.c

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