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[Qemu-devel] [PATCH 2/2] extend the macaddr space to 0xffffffff
From: |
Amos Kong |
Subject: |
[Qemu-devel] [PATCH 2/2] extend the macaddr space to 0xffffffff |
Date: |
Mon, 17 Jun 2013 21:35:11 +0800 |
Currently we only support to allocate 0xff mac-addresses,
if we start guest by pci-bridge/multiple-func, the macaddr
are not enough.
This patch extends the mac-address space to 0xffffffff
52:54:00:00:00:00 ~ 52:54:ff:ff:ff:ff
Signed-off-by: Amos Kong <address@hidden>
---
net/net.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/net/net.c b/net/net.c
index f019da4..78bb080 100644
--- a/net/net.c
+++ b/net/net.c
@@ -153,10 +153,12 @@ void qemu_macaddr_default_if_unset(MACAddr *macaddr)
realloc_mac:
macaddr->a[0] = 0x52;
macaddr->a[1] = 0x54;
- macaddr->a[2] = 0x00;
- macaddr->a[3] = 0x12;
- macaddr->a[4] = 0x34;
- macaddr->a[5] = 0x56 + index++;
+ macaddr->a[2] = 0x00 + ((0x120000 + 0x3400 + 0x56 + index) >> 24 & 0xff);
+ macaddr->a[3] = 0x12 + ((0x3400 + 0x56 + index) >> 16 & 0xff);
+ macaddr->a[4] = 0x34 + ((0x56 + index) >> 8 & 0xff);
+ macaddr->a[5] = 0x56 + (index & 0xff);
+
+ index++;
QTAILQ_FOREACH(nc, &net_clients, next) {
peer = nc->peer;
--
1.8.1.4
Re: [Qemu-devel] [PATCH 0/2] fix macaddr allocation, Stefan Hajnoczi, 2013/06/18