Re: [edk2-devel] [PATCH] NetworkPkg/Ip4Dxe: Fix Reset To Default

["Michael D Kinney" <michael.d.kinney@intel.com>]

Acked-by: Michael D Kinney <michael.d.kinney@intel.com>

I will prepare PR for merge




From: Kasbekar, Saloni <saloni.kasbekar@intel.com> 
Sent: Wednesday, January 17, 2024 9:27 AM
To: Ashish Singhal <ashishsingha@nvidia.com>; devel@edk2.groups.io; Clark-williams, Zachary <zachary.clark-williams@intel.com>; Jeff Brasen <jbrasen@nvidia.com>; Kinney, Michael D <michael.d.kinney@intel.com>; Gao, Liming <gaoliming@byosoft.com.cn>
Subject: RE: [PATCH] NetworkPkg/Ip4Dxe: Fix Reset To Default

Liming, Mike,

Could you please help merge this PR?

Thanks,
Saloni

From: Ashish Singhal <mailto:ashishsingha@nvidia.com> 
Sent: Wednesday, January 17, 2024 6:08 AM
To: Kasbekar, Saloni <mailto:saloni.kasbekar@intel.com>; mailto:devel@edk2.groups.io; Clark-williams, Zachary <mailto:zachary.clark-williams@intel.com>; Jeff Brasen <mailto:jbrasen@nvidia.com>
Subject: Re: [PATCH] NetworkPkg/Ip4Dxe: Fix Reset To Default

Hello,

Checking back for an update on when this PR can be merged or if there are any other changes you recommend.

Thanks
Ashish

________________________________________
From: Ashish Singhal <mailto:ashishsingha@nvidia.com>
Sent: Saturday, January 6, 2024 5:53 AM
To: Kasbekar, Saloni <mailto:saloni.kasbekar@intel.com>; mailto:devel@edk2.groups.io <mailto:devel@edk2.groups.io>; Clark-williams, Zachary <mailto:zachary.clark-williams@intel.com>; Jeff Brasen <mailto:jbrasen@nvidia.com>
Subject: Re: [PATCH] NetworkPkg/Ip4Dxe: Fix Reset To Default 
 
Thanks Saloni. PR for getting this merged is available at https://github.com/tianocore/edk2/pull/5150

Thanks
Ashish

________________________________________
From: Kasbekar, Saloni <mailto:saloni.kasbekar@intel.com>
Sent: Saturday, January 6, 2024 1:31 AM
To: Ashish Singhal <mailto:ashishsingha@nvidia.com>; mailto:devel@edk2.groups.io <mailto:devel@edk2.groups.io>; Clark-williams, Zachary <mailto:zachary.clark-williams@intel.com>; Jeff Brasen <mailto:jbrasen@nvidia.com>
Subject: RE: [PATCH] NetworkPkg/Ip4Dxe: Fix Reset To Default 
 
External email: Use caution opening links or attachments

Yes, SetData does reset the previous configuration.
 
Reviewed-by: Saloni Kasbekar <mailto:saloni.kasbekar@intel.com>
 
Thanks,
Saloni
 
From: Ashish Singhal <mailto:ashishsingha@nvidia.com>
Sent: Friday, January 5, 2024 2:34 AM
To: Kasbekar, Saloni <mailto:saloni.kasbekar@intel.com>; mailto:devel@edk2.groups.io; Clark-williams, Zachary <mailto:zachary.clark-williams@intel.com>; Jeff Brasen <mailto:jbrasen@nvidia.com>
Subject: Re: [PATCH] NetworkPkg/Ip4Dxe: Fix Reset To Default
 
I do not recommend doing that. Setting policy via SetData does enough to wipe out any previous manual configuration and that is the goal for reset to default.
________________________________________
From: Kasbekar, Saloni <mailto:saloni.kasbekar@intel.com>
Sent: Friday, January 5, 2024 2:30 AM
To: Ashish Singhal <mailto:ashishsingha@nvidia.com>; mailto:devel@edk2.groups.io <mailto:devel@edk2.groups.io>; Clark-williams, Zachary <mailto:zachary.clark-williams@intel.com>; Jeff Brasen <mailto:jbrasen@nvidia.com>
Subject: RE: [PATCH] NetworkPkg/Ip4Dxe: Fix Reset To Default
 
External email: Use caution opening links or attachments
 
Makes sense. Should we also set IfrNvData->DhcpEnable = TRUE when updating the Policy then?
 
From: Ashish Singhal <mailto:ashishsingha@nvidia.com>
Sent: Wednesday, January 3, 2024 8:52 AM
To: Kasbekar, Saloni <mailto:saloni.kasbekar@intel.com>; mailto:devel@edk2.groups.io; Clark-williams, Zachary <mailto:zachary.clark-williams@intel.com>; Jeff Brasen <mailto:jbrasen@nvidia.com>
Subject: Re: [PATCH] NetworkPkg/Ip4Dxe: Fix Reset To Default
 
Hello Saloni,
 
Thanks for the feedback. After the reset, or when we disable configure from menu, GetData returns policy to static as the enum value is 0. However, setting value as static does not have any benefit as it forces to reuse the old network settings. Using DHCP really mimics the reset behavior that we see without any configuration done manually.
 
Thanks
Ashish
 
________________________________________
From: Kasbekar, Saloni <mailto:saloni.kasbekar@intel.com>
Sent: Tuesday, January 2, 2024 1:47 PM
To: Ashish Singhal <mailto:ashishsingha@nvidia.com>; mailto:devel@edk2.groups.io <mailto:devel@edk2.groups.io>; Clark-williams, Zachary <mailto:zachary.clark-williams@intel.com>; Jeff Brasen <mailto:jbrasen@nvidia.com>
Subject: RE: [PATCH] NetworkPkg/Ip4Dxe: Fix Reset To Default
 
External email: Use caution opening links or attachments
 
Hi Ashish,
 
+    Ip4NvData->Policy = Ip4Config2PolicyDhcp;
+    Status            = Ip4Cfg2->SetData (
+                                   Ip4Cfg2,
+                                   Ip4Config2DataTypePolicy,
+                                   sizeof (EFI_IP4_CONFIG2_POLICY),
+                                   &Ip4NvData->Policy
+                                   );
 
Here we're assuming IfrFormNvData->DhcpEnable is TRUE. Should we check it before setting the policy and calling SetData()?
 
Thanks,
Saloni
 
 
From: Ashish Singhal <mailto:ashishsingha@nvidia.com>
Sent: Monday, January 1, 2024 8:48 AM
To: mailto:devel@edk2.groups.io; Kasbekar, Saloni <mailto:saloni.kasbekar@intel.com>; Clark-williams, Zachary <mailto:zachary.clark-williams@intel.com>; Jeff Brasen <mailto:jbrasen@nvidia.com>
Subject: Re: [PATCH] NetworkPkg/Ip4Dxe: Fix Reset To Default
 
Hello,
 
Checking again for some feedback on this.
 
Thanks
Ashish
 
________________________________________
From: Ashish Singhal <mailto:ashishsingha@nvidia.com>
Sent: Thursday, December 14, 2023 4:42 PM
To: mailto:devel@edk2.groups.io <mailto:devel@edk2.groups.io>; mailto:saloni.kasbekar@intel.com <mailto:saloni.kasbekar@intel.com>; mailto:zachary.clark-williams@intel.com <mailto:zachary.clark-williams@intel.com>; Jeff Brasen <mailto:jbrasen@nvidia.com>
Cc: Ashish Singhal <mailto:ashishsingha@nvidia.com>
Subject: [PATCH] NetworkPkg/Ip4Dxe: Fix Reset To Default
 
Exercising reset to default does not reset the settings.
Add handler code for the case where configuration is
disabled.

Signed-off-by: Ashish Singhal <mailto:ashishsingha@nvidia.com>
---
 NetworkPkg/Ip4Dxe/Ip4Config2Nv.c | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/NetworkPkg/Ip4Dxe/Ip4Config2Nv.c b/NetworkPkg/Ip4Dxe/Ip4Config2Nv.c
index e0b6a4d4a9..dac5817b7c 100644
--- a/NetworkPkg/Ip4Dxe/Ip4Config2Nv.c
+++ b/NetworkPkg/Ip4Dxe/Ip4Config2Nv.c
@@ -586,6 +586,31 @@ Ip4Config2ConvertIfrNvDataToConfigNvData (
   }
 
   if (IfrFormNvData->Configure != TRUE) {
+    if (Ip4NvData->DnsAddress != NULL) {
+      FreePool (Ip4NvData->DnsAddress);
+      Ip4NvData->DnsAddress      = NULL;
+      Ip4NvData->DnsAddressCount = 0;
+    }
+
+    if (Ip4NvData->GatewayAddress != NULL) {
+      FreePool (Ip4NvData->GatewayAddress);
+      Ip4NvData->GatewayAddress      = NULL;
+      Ip4NvData->GatewayAddressCount = 0;
+    }
+
+    if (Ip4NvData->ManualAddress != NULL) {
+      FreePool (Ip4NvData->ManualAddress);
+      Ip4NvData->ManualAddress      = NULL;
+      Ip4NvData->ManualAddressCount = 0;
+    }
+
+    Ip4NvData->Policy = Ip4Config2PolicyDhcp;
+    Status            = Ip4Cfg2->SetData (
+                                   Ip4Cfg2,
+                                   Ip4Config2DataTypePolicy,
+                                   sizeof (EFI_IP4_CONFIG2_POLICY),
+                                   &Ip4NvData->Policy
+                                   );
     return EFI_SUCCESS;
   }
 
--
2.17.1
Hello,
Hello Saloni,
Thanks 


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