From 7825ef61b703c017c2b4ae56007046f0acd3fee6 Mon Sep 17 00:00:00 2001
From: Amos Kong <akong@redhat.com>
Date: Tue, 5 Nov 2013 09:17:40 +0100
Subject: [PATCH 08/25] net/e1000: update network information when macaddr is changed in guest

RH-Author: Amos Kong <akong@redhat.com>
Message-id: <1383643062-1844-3-git-send-email-akong@redhat.com>
Patchwork-id: 55369
O-Subject: [RHEL-7.0 qemu-kvm PATCH 2/4] net/e1000: update network information when macaddr is changed in guest
Bugzilla: 922589
RH-Acked-by: Vlad Yasevich <vyasevic@redhat.com>
RH-Acked-by: Alex Williamson <alex.williamson@redhat.com>
RH-Acked-by: Xiao Wang <jasowang@redhat.com>
RH-Acked-by: Michael S. Tsirkin <mst@redhat.com>

Bugzilla: 922589

If we change macaddr in guest by 'ifconfig eth0 hw ether 12:12:12:34:35:36',
the mac register of e1000 is already updated, but we don't update
network information in qemu. Therefor, the information in monitor
is wrong.

This patch updates nic info when the second part of macaddr is written.

Signed-off-by: Amos Kong <akong@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
(cherry picked from commit 7c36507c2b8776266f50c5e2739bd18279953b93)
---
 hw/net/e1000.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
 hw/net/e1000.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/hw/net/e1000.c b/hw/net/e1000.c
index d273ef2..87a84a7 100644
--- a/hw/net/e1000.c
+++ b/hw/net/e1000.c
@@ -971,7 +971,15 @@ mac_read_clr8(E1000State *s, int index)
 static void
 mac_writereg(E1000State *s, int index, uint32_t val)
 {
+    uint32_t macaddr[2];
+
     s->mac_reg[index] = val;
+
+    if (index == RA + 1) {
+        macaddr[0] = cpu_to_le32(s->mac_reg[RA]);
+        macaddr[1] = cpu_to_le32(s->mac_reg[RA + 1]);
+        qemu_format_nic_info_str(qemu_get_queue(s->nic), (uint8_t *)macaddr);
+    }
 }
 
 static void
-- 
1.7.1