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| author | Eric Dumazet <edumazet@google.com> | 2017-12-10 17:55:02 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-06-21 04:03:02 +0900 |
| commit | 40c809774c692877b1167003d9807f7aaa46ad2b (patch) | |
| tree | f9f09677c68e5d3babd2355168e2cdbeaf1696be /drivers | |
| parent | 7ab8fc065fff258d0b2c5e48e529fd780905db45 (diff) | |
| download | linux-40c809774c692877b1167003d9807f7aaa46ad2b.tar.gz linux-40c809774c692877b1167003d9807f7aaa46ad2b.tar.bz2 linux-40c809774c692877b1167003d9807f7aaa46ad2b.zip | |
tcp: do not overshoot window_clamp in tcp_rcv_space_adjust()
commit 02db55718d53f9d426cee504c27fb768e9ed4ffe upstream.
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>
Cc: Benjamin Gilbert <benjamin.gilbert@coreos.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
0 files changed, 0 insertions, 0 deletions