motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-02 07:13:54 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

net: disallow to specify multicast MAC address

Browse source 
[Assigning a multicast MAC address to a NIC leads to confusing behavior.
Reject multicast MAC addresses so users are alerted to their error
straight away.

The "net/eth.h" in6_addr rename prevents a name collision with
<netinet/in.h> on Linux.
-- Stefan]

Signed-off-by: Dmitry V. Krivenok <krivenok.dmitry@gmail.com>
Reviewed-by: Amos Kong <kongjianjun@gmail.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Dmitry Krivenok 2013-10-21 12:08:44 +04:00 • committed by Stefan Hajnoczi
parent 964668b03d
commit d60b20cf2a
2 changed files with 9 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

6
net/net.c
View file

@ -27,6 +27,7 @@
#include "clients.h"
#include "hub.h"
#include "net/slirp.h"
#include "net/eth.h"
#include "util.h"
#include "monitor/monitor.h"
@ -689,6 +690,11 @@ static int net_init_nic(const NetClientOptions *opts, const char *name,
error_report("invalid syntax for ethernet address");
return -1;
}
if (nic->has_macaddr &&
is_multicast_ether_addr(nd->macaddr.a)) {
error_report("NIC cannot have multicast MAC address (odd 1st byte)");
return -1;
}
qemu_macaddr_default_if_unset(&nd->macaddr);
if (nic->has_vectors) {