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e1000e: Fix spurious RX TCP ACK interrupts

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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>
This commit is contained in:
Dmitry Fleytman 2016-09-15 09:14:29 +03:00 committed by Jason Wang
parent 8b54c6e187
commit 4100c026b6
1 changed files with 2 additions and 1 deletions
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3
hw/net/e1000e_core.c
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@ -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;
}