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authorDmitry Valter <d-valter@yandex-team.ru>2022-12-09 19:34:22 +0000
committerOle Tr�an <otroan@employees.org>2023-02-03 14:31:54 +0000
commit6b97c43005f6458ce2e253f87af6f609eaebef60 (patch)
treef7a7a8f67a4e1e0dd0f158e423dd0c8e6f7559cf /test/run.py
parentfc2d95d115ea5e82bc3efb18cf40632449112fdf (diff)
nat: fix accidental o2i deletion/reuse
Nat session is allocated before the port allocation. During port allocation candidate address+port are set to o2i 6-tuple and tested against the flow hash. If insertion fails, the port is busy and rejected. When all N attempts are unsuccessful, "out-of-ports" error is recorded and the session is to be deleted. During session deletion o2i and i2o tuples are deleted from the flow hash. In case of "out-of-ports" i2o tuple is not valid, however o2i is and it refers to **some other** session that's known to be allocated. By backing match tuple up session should be invalidated well enough not to collide with any valid one. Type: fix Signed-off-by: Dmitry Valter <d-valter@yandex-team.ru> Change-Id: Id30be6f26ecce7a5a63135fb971bb65ce318af82
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