diff options
| author | Stefan Hajnoczi | 2013-03-01 16:32:15 +0100 |
|---|---|---|
| committer | Michael Brown | 2013-03-01 17:11:40 +0100 |
| commit | 7426177d631c0fd8b2ef3ffae4449637d5bca32a (patch) | |
| tree | 5d1fd4375b0b51ebcf4278be7974ad2268ba6748 /src/net/vlan.c | |
| parent | [efi] Ensure EFI binaries comply with Authenticode requirements (diff) | |
| download | ipxe-7426177d631c0fd8b2ef3ffae4449637d5bca32a.tar.gz ipxe-7426177d631c0fd8b2ef3ffae4449637d5bca32a.tar.xz ipxe-7426177d631c0fd8b2ef3ffae4449637d5bca32a.zip | |
[netdevice] Add vlan_tag() to get the VLAN tag of a network device
The iBFT has a VLAN field that should be filled in. Add the
vlan_tag() function to extract the VLAN tag of a network device.
Since VLAN support is optional, define a weak function that returns 0
when iPXE is built without VLAN support.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Modified-by: Michael Brown <mcb30@ipxe.org>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Diffstat (limited to 'src/net/vlan.c')
| -rw-r--r-- | src/net/vlan.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/net/vlan.c b/src/net/vlan.c index f7281f5d..1a2a0862 100644 --- a/src/net/vlan.c +++ b/src/net/vlan.c @@ -283,6 +283,23 @@ struct net_protocol vlan_protocol __net_protocol = { }; /** + * Get the VLAN tag + * + * @v netdev Network device + * @ret tag VLAN tag, or 0 if device is not a VLAN device + */ +unsigned int vlan_tag ( struct net_device *netdev ) { + struct vlan_device *vlan; + + if ( netdev->op == &vlan_operations ) { + vlan = netdev->priv; + return vlan->tag; + } else { + return 0; + } +} + +/** * Check if network device can be used as a VLAN trunk device * * @v trunk Trunk network device |