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[iscsi] Include 802.1Q VLAN identifier in iBFT

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The iBFT NIC section has a VLAN field which must be filled in so that
iSCSI booting works over VLANs.

Unfortunately it is unclear from the IBM specification linked in
ibft.c whether the VLAN field is just the 802.1Q VLAN Identifier or
the full 802.1Q TCI.  For now just fill in the VID, the Priority Code
Point and Drop Eligible Indicator could be set in the future if it
turns out they should be present too.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Modified-by: Michael Brown <mcb30@ipxe.org>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Stefan Hajnoczi 2013-03-01 16:32:16 +01:00 committed by Michael Brown
parent 7426177d63
commit 7d64abbc5d
1 changed files with 3 additions and 0 deletions
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3
src/drivers/block/ibft.c
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@ -37,6 +37,7 @@ FILE_LICENCE ( BSD2 );
#include <ipxe/in.h>
#include <ipxe/netdevice.h>
#include <ipxe/ethernet.h>
#include <ipxe/vlan.h>
#include <ipxe/dhcp.h>
#include <ipxe/iscsi.h>
#include <ipxe/ibft.h>
@ -264,6 +265,8 @@ static int ibft_fill_nic ( struct ibft_nic *nic,
DBG ( "iBFT NIC subnet = /%d\n", nic->subnet_mask_prefix );
/* Extract values from net-device configuration */
nic->vlan = cpu_to_le16 ( vlan_tag ( netdev ) );
DBG ( "iBFT NIC VLAN = %02x\n", le16_to_cpu ( nic->vlan ) );
if ( ( rc = ll_protocol->eth_addr ( netdev->ll_addr,
nic->mac_address ) ) != 0 ) {
DBG ( "Could not determine iBFT MAC: %s\n", strerror ( rc ) );