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authorDavid Gibson <david@gibson.dropbear.id.au>2023-09-08 11:49:49 +1000
committerStefano Brivio <sbrivio@redhat.com>2023-09-08 09:16:10 +0200
commit5fb376de6ef29e2f21b510aec7cfefeba955e26c (patch)
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tcp: Never hash match closed connections
>From a practical point of view, when a TCP connection ends, whether by FIN or by RST, we set the CLOSED event, then some time later we remove the connection from the hash table and clean it up. However, from a protocol point of view, once it's closed, it's gone, and any new packets with matching addresses and ports are either forming a new connection, or are invalid packets to discard. Enforce these semantics in the TCP hash logic by never hash matching closed connections. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
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