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[6/7] e1000e: Fix spurious RX TCP ACK interrupts

Message ID 1473920070-21938-7-git-send-email-dmitry@daynix.com (mailing list archive)
State New, archived
Headers show

Commit Message

Dmitry Fleytman Sept. 15, 2016, 6:14 a.m. UTC 
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>
---
 hw/net/e1000e_core.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
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Patch

diff --git a/hw/net/e1000e_core.c b/hw/net/e1000e_core.c
index e70e669..f4ec79f 100644
--- a/hw/net/e1000e_core.c
+++ b/hw/net/e1000e_core.c
@@ -1710,7 +1710,8 @@  e1000e_receive_iov(E1000ECore *core, const struct iovec *iov, int iovcnt)
         }
 
         /* 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;
         }