diff options
| author | Florian Westphal <fw@strlen.de> | 2017-07-30 03:57:21 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-07-31 23:37:49 +0200 |
| commit | 45f119bf936b1f9f546a0b139c5b56f9bb2bdc78 (patch) | |
| tree | 860b9827faa6b5d3ba64ba30149737b388c55e66 /net/ipv4/tcp_output.c | |
| parent | tcp: remove low_latency sysctl (diff) | |
| download | linux-45f119bf936b1f9f546a0b139c5b56f9bb2bdc78.tar.xz linux-45f119bf936b1f9f546a0b139c5b56f9bb2bdc78.zip | |
tcp: remove header prediction
Like prequeue, I am not sure this is overly useful nowadays.
If we receive a train of packets, GRO will aggregate them if the
headers are the same (HP predates GRO by several years) so we don't
get a per-packet benefit, only a per-aggregated-packet one.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_output.c')
| -rw-r--r-- | net/ipv4/tcp_output.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c index 886d874775df..8380464aead1 100644 --- a/net/ipv4/tcp_output.c +++ b/net/ipv4/tcp_output.c @@ -295,9 +295,7 @@ static u16 tcp_select_window(struct sock *sk) /* RFC1323 scaling applied */ new_win >>= tp->rx_opt.rcv_wscale; - /* If we advertise zero window, disable fast path. */ if (new_win == 0) { - tp->pred_flags = 0; if (old_win) NET_INC_STATS(sock_net(sk), LINUX_MIB_TCPTOZEROWINDOWADV); |