From a2dbe1356faff3cb613ae83b77c484a203be5f15 Mon Sep 17 00:00:00 2001 From: Thomas Huth Date: Tue, 24 Jan 2017 10:42:49 +0100 Subject: net: Mark 'vlan' parameter as deprecated The 'vlan' parameter is a continuous source of confusion for the users, many people mix it up with the more common term VLAN (the link layer packet encapsulation), and even if they realize that the QEMU 'vlan' is rather some kind of network hub emulation, there is still a high risk that they configure their QEMU networking in a wrong way with this parameter (e.g. by hooking NICs together, so they get a 'loopback' between one and the other NIC). Thus at one point in time, we should finally get rid of the 'vlan' feature in QEMU. Let's do a first step in this direction by declaring the 'vlan' parameter as deprecated and informing the users to use the 'netdev' parameter instead. Signed-off-by: Thomas Huth Signed-off-by: Jason Wang --- net/net.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'net/net.c') diff --git a/net/net.c b/net/net.c index 939fe3193a..fb7af3a432 100644 --- a/net/net.c +++ b/net/net.c @@ -970,6 +970,7 @@ static int net_client_init1(const void *object, bool is_netdev, Error **errp) const Netdev *netdev; const char *name; NetClientState *peer = NULL; + static bool vlan_warned; if (is_netdev) { netdev = object; @@ -1050,6 +1051,11 @@ static int net_client_init1(const void *object, bool is_netdev, Error **errp) !opts->u.nic.data->has_netdev) { peer = net_hub_add_port(net->has_vlan ? net->vlan : 0, NULL); } + + if (net->has_vlan && !vlan_warned) { + error_report("'vlan' is deprecated. Please use 'netdev' instead."); + vlan_warned = true; + } } if (net_client_init_fun[netdev->type](netdev, name, peer, errp) < 0) { -- cgit v1.2.1