commit 4100c026b69001f774bfff30b5773a2418306f8c
author Dmitry Fleytman <dmitry@daynix.com> Thu Sep 15 09:14:29 2016 +0300
committer Jason Wang <jasowang@redhat.com> Tue Sep 27 17:54:22 2016 +0800
tree 9cf60484c0dc99dc204866cab20e383e6110b576
parent 8b54c6e1872825c76200bfb419dadeb6a84b3845

e1000e: Fix spurious RX TCP ACK interrupts

Do not raise ACK interrupts when
RFCTL.ACKDIS bit is set (see spec. 10.2.5.16).

Signed-off-by: Dmitry Fleytman <dmitry@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

hw/net/e1000e_core.c

diff --git a/hw/net/e1000e_core.c b/hw/net/e1000e_core.c
index d26b611..0298136 100644
--- a/hw/net/e1000e_core.c
+++ b/hw/net/e1000e_core.c
@@ -1710,7 +1710,8 @@
         }
 
         /* Perform ACK receive detection */
-        if (e1000e_is_tcp_ack(core, core->rx_pkt)) {
+        if  (!(core->mac[RFCTL] & E1000_RFCTL_ACK_DIS) &&
+             (e1000e_is_tcp_ack(core, core->rx_pkt))) {
             n |= E1000_ICS_ACK;
         }