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authorEric Dumazet <edumazet@google.com>2018-05-17 14:47:25 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-08-03 07:50:45 +0200
commit5a1baf194475849ff31a34c30d540bc1795a2a7c (patch)
tree0c84c428b3e6a5b609c0b616154cef424e8eed91
parentfffd3058eaf438e71cd301c14a0c67161a5864df (diff)
tcp: do not force quickack when receiving out-of-order packets
[ Upstream commit a3893637e1eb0ef5eb1bbc52b3a8d2dfa317a35d ] As explained in commit 9f9843a751d0 ("tcp: properly handle stretch acks in slow start"), TCP stacks have to consider how many packets are acknowledged in one single ACK, because of GRO, but also because of ACK compression or losses. We plan to add SACK compression in the following patch, we must therefore not call tcp_enter_quickack_mode() Signed-off-by: Eric Dumazet <edumazet@google.com> Acked-by: Neal Cardwell <ncardwell@google.com> Acked-by: Soheil Hassas Yeganeh <soheil@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--net/ipv4/tcp_input.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index b86e7b8beb1d..e12bf35beb1c 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -4721,8 +4721,6 @@ drop:
if (!before(TCP_SKB_CB(skb)->seq, tp->rcv_nxt + tcp_receive_window(tp)))
goto out_of_window;
- tcp_enter_quickack_mode(sk);
-
if (before(TCP_SKB_CB(skb)->seq, tp->rcv_nxt)) {
/* Partial packet, seq < rcv_next < end_seq */
SOCK_DEBUG(sk, "partial packet: rcv_next %X seq %X - %X\n",