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NetworkPkg: Abort the PXE process if DHCP has been started by other instance. 

PXE need to use extended DHCP options and check received offers in callback
function, so there is no need to continue the PXE process if DHCP driver has
been started by other instance but not PXE driver itself.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Fu Siyuan <siyuan.fu@intel.com>
Reviewed-by: Sriram Subramanian <sriram-s@hpe.com>
Reviewed-by: Jiaxin Wu <jiaxin.wu@intel.com>
This commit is contained in:
Fu Siyuan 2018-01-02 11:41:24 +08:00
parent e4fb8f1d31
commit 6a4eed9bad
1 changed files with 2 additions and 7 deletions
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9
NetworkPkg/UefiPxeBcDxe/PxeBcDhcp4.c
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@ -1,7 +1,7 @@
/** @file
Functions implementation related with DHCPv4 for UefiPxeBc Driver.
Copyright (c) 2009 - 2017, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
@ -1697,13 +1697,8 @@ PxeBcDhcp4Dora (
ZeroMem (Private->OfferCount, sizeof (Private->OfferCount));
ZeroMem (Private->OfferIndex, sizeof (Private->OfferIndex));
//
// Start DHCPv4 D.O.R.A. process to acquire IPv4 address. This may
// have already been done, thus do not leave in error if the return
// code is EFI_ALREADY_STARTED.
//
Status = Dhcp4->Start (Dhcp4, NULL);
if (EFI_ERROR (Status) && Status != EFI_ALREADY_STARTED) {
if (EFI_ERROR (Status)) {
if (Status == EFI_ICMP_ERROR) {
PxeMode->IcmpErrorReceived = TRUE;
}