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tcp: clean scoreboard when releasing the socket buffer
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Authored by rscheff on Feb 9 2024, 7:28 PM.
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Details

Summary

The SACK scoreboard is conceptually an extention of the socket buffer.
Remove it when the socket buffer goes away with soisdisconnected().
Verify that this is also the expected state in tcp_discardcb().

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rG FreeBSD src repository
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