tcp: do not overshoot window_clamp in tcp_rcv_space_adjust()

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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 <edumazet@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Acked-by: Wei Wang <weiwan@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

...

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Eric Dumazet 2017-12-10 17:55:02 -08:00 • committed by David S. Miller

parent c360f2b58e

commit 02db55718d

1 changed files with 1 additions and 1 deletions

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net/ipv4/tcp_input.c

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