The previous DNS server data will be retained after the policy
changes from Dhcp to Static. This patch is used to clean the
previous dhcp configuration data.
Cc: Hegde Nagaraj P <nagaraj-p.he...@hpe.com>
Cc: Subramanian Sriram <srira...@hpe.com>
Cc: Ye Ting <ting...@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jiaxin Wu <jiaxin...@intel.com>
---
.../Universal/Network/Ip4Dxe/Ip4Config2Impl.c | 62 +++++++++++-----------
1 file changed, 31 insertions(+), 31 deletions(-)
diff --git a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Config2Impl.c
b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Config2Impl.c
index 75ad301..97b555b 100644
--- a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Config2Impl.c
+++ b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Config2Impl.c
@@ -1144,43 +1144,43 @@ Ip4Config2SetPolicy (
if (NewPolicy == Instance->Policy) {
if (NewPolicy != Ip4Config2PolicyDhcp || Instance->DhcpSuccess) {
return EFI_ABORTED;
}
} else {
+ //
+ // The policy is changed. Clean the ManualAddress, Gateway and DnsServers,
+ // shrink the variable data size, and fire up all the related events.
+ //
+ DataItem = &Instance->DataItem[Ip4Config2DataTypeManualAddress];
+ if (DataItem->Data.Ptr != NULL) {
+ FreePool (DataItem->Data.Ptr);
+ }
+ DataItem->Data.Ptr = NULL;
+ DataItem->DataSize = 0;
+ DataItem->Status = EFI_NOT_FOUND;
+ NetMapIterate (&DataItem->EventMap, Ip4Config2SignalEvent, NULL);
+
+ DataItem = &Instance->DataItem[Ip4Config2DataTypeGateway];
+ if (DataItem->Data.Ptr != NULL) {
+ FreePool (DataItem->Data.Ptr);
+ }
+ DataItem->Data.Ptr = NULL;
+ DataItem->DataSize = 0;
+ DataItem->Status = EFI_NOT_FOUND;
+ NetMapIterate (&DataItem->EventMap, Ip4Config2SignalEvent, NULL);
+
+ DataItem = &Instance->DataItem[Ip4Config2DataTypeDnsServer];
+ if (DataItem->Data.Ptr != NULL) {
+ FreePool (DataItem->Data.Ptr);
+ }
+ DataItem->Data.Ptr = NULL;
+ DataItem->DataSize = 0;
+ DataItem->Status = EFI_NOT_FOUND;
+ NetMapIterate (&DataItem->EventMap, Ip4Config2SignalEvent, NULL);
+
if (NewPolicy == Ip4Config2PolicyDhcp) {
- //
- // The policy is changed from static to dhcp:
- // Clean the ManualAddress, Gateway and DnsServers, shrink the variable
- // data size, and fire up all the related events.
- //
- DataItem =
&Instance->DataItem[Ip4Config2DataTypeManualAddress];
- if (DataItem->Data.Ptr != NULL) {
- FreePool (DataItem->Data.Ptr);
- }
- DataItem->Data.Ptr = NULL;
- DataItem->DataSize = 0;
- DataItem->Status = EFI_NOT_FOUND;
- NetMapIterate (&DataItem->EventMap, Ip4Config2SignalEvent, NULL);
-
- DataItem = &Instance->DataItem[Ip4Config2DataTypeGateway];
- if (DataItem->Data.Ptr != NULL) {
- FreePool (DataItem->Data.Ptr);
- }
- DataItem->Data.Ptr = NULL;
- DataItem->DataSize = 0;
- DataItem->Status = EFI_NOT_FOUND;
- NetMapIterate (&DataItem->EventMap, Ip4Config2SignalEvent, NULL);
-
- DataItem = &Instance->DataItem[Ip4Config2DataTypeDnsServer];
- if (DataItem->Data.Ptr != NULL) {
- FreePool (DataItem->Data.Ptr);
- }
- DataItem->Data.Ptr = NULL;
- DataItem->DataSize = 0;
- DataItem->Status = EFI_NOT_FOUND;
SET_DATA_ATTRIB (DataItem->Attribute, DATA_ATTRIB_VOLATILE);
- NetMapIterate (&DataItem->EventMap, Ip4Config2SignalEvent, NULL);
} else {
//
// The policy is changed from dhcp to static. Stop the DHCPv4 process
// and destroy the DHCPv4 child.
//
--
1.9.5.msysgit.1
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