On Sun, Dec 10, 2017 at 8:55 PM, Eric Dumazet [off-list ref] wrote:
While rcvbuf is properly clamped by tcp_rmem[2], rcvwin
is left to a potentially too big value.
It has no serious effect, since :
1) tcp_grow_window() has very strict checks.
2) window_clamp can be mangled by user space to any value anyway.
tcp_init_buffer_space() and companions use tcp_full_space(),
we use tcp_win_from_space() to avoid reloading sk->sk_rcvbuf
Signed-off-by: Eric Dumazet <redacted>
Acked-by: Soheil Hassas Yeganeh <redacted>
Acked-by: Wei Wang <redacted>
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Acked-by: Neal Cardwell <ncardwell@google.com>
Thanks, Eric!
neal