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--_000_CY8PR10MB644167959900C7CD0D6C68D4B0A59CY8PR10MB6441namp_ Content-Type: text/html; charset="big5" Content-Transfer-Encoding: quoted-printable

Hi Tinh,

 =

Our last RNDIS driver=A1= =A6s code has add that.

To see https://learn.microsoft.com/en-us/windows-hardware/drivers/network/control-= channel-characteristics,

It need to read the= Interrupt IN endpoint before response the RNDIS message.=

 

The host does not continuously poll = the USB Control endpoint for input control messages. Upon placing a control= message

on its Control endpoint, the device must retu= rn a notification on the Communication Class interface's Interrupt IN endpo= int,

which is polled by the host whenever= the device can return control messages. The transfer from the device's int= errupt IN endpoint

to the host is a standard USB Interr= upt IN transfer. The only defined device notification is the RESPONSE_AVAIL= ABLE notification,

defined in the following table.

 =

 =

 =

Thanks,

Richard

 =

From: Tinh Nguyen OS <tinhnguyen@os.amperecomputing.co= m>
Sent: 2023=A6~2=A4= =EB21=A4=E9 10:24 AM
To: devel@edk2.groups.io; Richard Ho (=A6=F3=A9=FA=A9=BE) <RichardHo@ami.com>
Subject: [EXTERNAL] Re: [edk2-devel] [PATCH v4 1/3] UsbNetworkPkg/Us= bRndis: Add USB RNDIS devices support

 

 

**CAUTION: The e-mail below is from an external source. Please exerc= ise caution before opening attachments, clicking links, or following guidance.**

 

On 18/02/2023 16:47, RichardHo [= =A6=F3=A9=FA=A9=BE] via groups.io wrote:

 
+  PrintRndisMsg (RndisMsg);
+
+  Status =3D UsbIo->UsbControlTransfer (
+           &nb=
sp;        UsbIo,
+           &nb=
sp;        &DevReq,
+           &nb=
sp;        EfiUsbDataOut,

+           &nb=
sp;        USB_ETHERNET_TRANSFER_TIMEOUT=
,


+           &nb=
sp;        RndisMsg,


+           &nb=
sp;        RndisMsg->MessageLength,


+           &nb=
sp;        &UsbStatus

+           &nb=
sp;        );


+


+  DEBUG ((DEBUG_INFO, "RndisControlMsg: UsbStatus : %x Stat=
us : %r RndisMsgResponse : %lx\n", UsbStatus, Status, RndisMsgResponse=
));


+


+  // Error or no response expected


+  if ((EFI_ERROR (Status)) || (RndisMsgResponse =3D=3D NULL)) {<=
o:p>


+    DEBUG ((DEBUG_INFO, "RndisControlMsg: UsbStat=
us : %x Status : %r\n", UsbStatus, Status));


+    return Status;


+  }


+


+  for (Index =3D 0; Index < (RNDIS_CONTROL_TIMEOUT/100); Inde=
x++) {


+    ReadRndisResponseInterrupt (UsbRndisDevice);<=
/o:p>

Could you help review the ReadRndisResponseInterrupt function? (). While= using USB Rndis, the Jade platform crashes.

I found that AMI had published the same driver here OSF-Aptio-OpenEdition/UsbRndisFunction.c at main =A1P opencomputeproject/OS= F-Aptio-OpenEdition (github.com),

however the RndisControlMsg function does not call ReadRndisResponseInte= rrupt.

Jade platform (aarch64) works well with this (OSF-Aptio-OpenEdition/UsbRndis= Function.c at main =A1P opencomputeproject/OSF-Aptio-OpenEdition (github.com)). D= oes your x86 system work without this line ?

+    ZeroMem (&DevReq, sizeof (EFI_USB_DEVICE_REQUE=
ST));
+
+    DevReq.RequestType =3D USB_ENDPOINT_DIR_IN | USB_R=
EQ_TYPE_CLASS | USB_TARGET_INTERFACE;
+    DevReq.Request     =3D GET_ENC=
APSULATED_RESPONSE;
-The information contained in this message may be confidential and propriet= ary to American Megatrends (AMI). This communication is intended to be read= only by the individual or entity to whom it is addressed or by their desig= nee. If the reader of this message is not the intended recipient, you are on notice that any distribution of = this message, in any form, is strictly prohibited. Please promptly notify t= he sender by reply e-mail or by telephone at 770-246-8600, and then delete = or destroy all copies of the transmission. --_000_CY8PR10MB644167959900C7CD0D6C68D4B0A59CY8PR10MB6441namp_--