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[PULL,09/23] e1000: signal guest on successful link auto-negotiation

Message ID 1403538745-18622-10-git-send-email-mst@redhat.com
State New
Headers show

Commit Message

Michael S. Tsirkin June 23, 2014, 3:53 p.m. UTC 
From: "Gabriel L. Somlo" <gsomlo@gmail.com>

Generate a link status change interrupt once link auto-netotiation
is successfully completed. This does not affect Linux and Windows
(XP and 7 tested) in any way, but is needed by the stock OS X driver
(AppleIntel8254XEthernet.kext), which would otherwise fail to notice
the link status change event.

Signed-off-by: Gabriel Somlo <somlo@cmu.edu>
Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
 hw/net/e1000.c | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/hw/net/e1000.c b/hw/net/e1000.c
index d6ef802..d20f8c8 100644
--- a/hw/net/e1000.c
+++ b/hw/net/e1000.c
@@ -213,6 +213,7 @@  e1000_autoneg_timer(void *opaque)
         s->phy_reg[PHY_LP_ABILITY] |= MII_LPAR_LPACK;
         s->phy_reg[PHY_STATUS] |= MII_SR_AUTONEG_COMPLETE;
         DBGOUT(PHY, "Auto negotiation is completed\n");
+        set_ics(s, 0, E1000_ICS_LSC); /* signal link status change to guest */
     }
 }