Merge branch 'tcp-better-memory-control-for-not-yet-accepted-sockets'

Eric Dumazet says:

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tcp: better memory control for not-yet-accepted sockets

Address a possible OOM condition caused by a recent change.

Add a new packetdrill test checking the expected behavior.
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Link: https://patch.msgid.link/20250707213900.1543248-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>