On 05/04/2018 02:08 PM, Chintan Shah wrote: > A UDP application which opens multiple sockets with same local > address/port combination (using SO_REUSEPORT/SO_REUSEADDR socket options); > and issues connect to a remote socket (using one of these local socket). > Now if the same socket, which issued connect, issues shutdown (SHUT_RD); > packets would still be queued to this socket (if sent from same remote > client, which the local socket connected to), and not delivered to the > other socket in the normal state. >
Confusing changelog. sk_shutdown is on a different cache line, so this additional fetch would cause loss of performance if many sockets are scanned in the hash bucket. If you are trying to add full 4-tuple hash table to UDP, and accept() ability, this would require a bit more than this hack...
