[Qemu-devel] [PATCH] e1000/rtl8139: update HMP NIC when every bit is written

[Amos Kong <akong@redhat.com>]

We currently just update the HMP NIC info when the last bit of macaddr
is written. This assumes that guest driver will write all the macaddr
from bit 0 to bit 5 when it changes the macaddr, this is the current
behavior of linux driver (e1000/rtl8139cp), but we can't do this
assumption.

The macaddr that is used for rx-filter will be updated when every bit
is changed. This patch updates the e1000/rtl8139 nic to update HMP NIC
info when every bit is changed. It will be same as virtio-net.

Signed-off-by: Amos Kong <akong@redhat.com>
---
 hw/net/e1000.c   | 2 +-
 hw/net/rtl8139.c | 5 +----
 2 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/hw/net/e1000.c b/hw/net/e1000.c
index ec8ecd7..2d60639 100644
--- a/hw/net/e1000.c
+++ b/hw/net/e1000.c
@@ -1110,7 +1110,7 @@ mac_writereg(E1000State *s, int index, uint32_t val)
 
     s->mac_reg[index] = val;
 
-    if (index == RA + 1) {
+    if (index == RA || 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);
diff --git a/hw/net/rtl8139.c b/hw/net/rtl8139.c
index 5329f44..7f2b4db 100644
--- a/hw/net/rtl8139.c
+++ b/hw/net/rtl8139.c
@@ -2741,10 +2741,7 @@ static void rtl8139_io_writeb(void *opaque, uint8_t addr, uint32_t val)
 
     switch (addr)
     {
-        case MAC0 ... MAC0+4:
-            s->phys[addr - MAC0] = val;
-            break;
-        case MAC0+5:
+        case MAC0 ... MAC0+5:
             s->phys[addr - MAC0] = val;
             qemu_format_nic_info_str(qemu_get_queue(s->nic), s->phys);
             break;
-- 
1.8.3.1