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authorDavid Gibson <david@gibson.dropbear.id.au>2023-11-30 13:02:22 +1100
committerStefano Brivio <sbrivio@redhat.com>2023-12-04 09:51:33 +0100
commitb86afe3559c0bd3d24bc6fed7c60466cf141224c (patch)
treea274602203c86b81459385245528283cf64f798f /test/pasta
parente21b6d69b1e65b341d6c2177258ee2b38c5f6374 (diff)
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tcp: Don't defer hash table removal2023_12_04.b86afe3
When a TCP connection is closed, we mark it by setting events to CLOSED, then some time later we do final cleanups: closing sockets, removing from the hash table and so forth. This does mean that when making a hash lookup we need to exclude any apparent matches that are CLOSED, since they represent a stale connection. This can happen in practice if one connection closes and a new one with the same endpoints is started shortly afterward. Checking for CLOSED is quite specific to TCP however, and won't work when we extend the hash table to more general flows. So, alter the code to immediately remove the connection from the hash table when CLOSED, although we still defer closing sockets and other cleanup. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
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