[Qemu-devel] [PATCH 3/6] e1000: Preserve link state across device reset

[Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>]

From: Jan Kiszka <jan.kiszka@siemens.com>

A device reset does not affect the link state, only set_link does.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
---
 hw/e1000.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/hw/e1000.c b/hw/e1000.c
index 86c5416..76e736f 100644
--- a/hw/e1000.c
+++ b/hw/e1000.c
@@ -1133,6 +1133,11 @@ static void e1000_reset(void *opaque)
     memmove(d->mac_reg, mac_reg_init, sizeof mac_reg_init);
     d->rxbuf_min_shift = 1;
     memset(&d->tx, 0, sizeof d->tx);
+
+    if (d->nic->nc.link_down) {
+        d->mac_reg[STATUS] &= ~E1000_STATUS_LU;
+        d->phy_reg[PHY_STATUS] &= ~MII_SR_LINK_STATUS;
+    }
 }
 
 static NetClientInfo net_e1000_info = {
-- 
1.7.8.3