/**
Extract the client interested options, all the parameters are
converted to host byte order.
@param[in] Tag The DHCP option tag
@param[in] Len The length of the option
@param[in] Data The value of the DHCP option
@param[out] Para The variable to save the interested parameter
@retval EFI_SUCCESS The DHCP option is successfully extracted.
@retval EFI_INVALID_PARAMETER The DHCP option is mal-formated
**/
EFI_STATUS
DhcpGetParameter (
IN UINT8 Tag,
IN INTN Len,
IN UINT8 *Data,
OUT DHCP_PARAMETER *Para
)
{
switch (Tag) {
case DHCP_TAG_NETMASK:
Para->NetMask = NetGetUint32 (Data);
break;
case DHCP_TAG_ROUTER:
//
// Return the first router to consumer which is the preferred one
//
Para->Router = NetGetUint32 (Data);
break;
case DHCP_TAG_LEASE:
Para->Lease = NetGetUint32 (Data);
break;
case DHCP_TAG_OVERLOAD:
Para->Overload = *Data;
if ((Para->Overload < 1) || (Para->Overload > 3)) {
return EFI_INVALID_PARAMETER;
}
break;
case DHCP_TAG_TYPE:
Para->DhcpType = *Data;
if ((Para->DhcpType < 1) || (Para->DhcpType > 9)) {
return EFI_INVALID_PARAMETER;
}
break;
case DHCP_TAG_SERVER_ID:
Para->ServerId = NetGetUint32 (Data);
break;
case DHCP_TAG_T1:
Para->T1 = NetGetUint32 (Data);
break;
case DHCP_TAG_T2:
Para->T2 = NetGetUint32 (Data);
break;
}
return EFI_SUCCESS;
}
STATIC
EFI_STATUS
DhcpGetParameter (
IN UINT8 Tag,
IN INTN Len,
IN UINT8 *Data,
IN DHCP_PARAMETER *Para
)
/*++
Routine Description:
Extract the client interested options, all the parameters are
converted to host byte order.
Arguments:
Tag - The DHCP option tag
Len - The length of the option
Data - The value of the DHCP option
Para - The variable to save the interested parameter
Returns:
EFI_SUCCESS - The DHCP option is successfully extracted.
EFI_INVALID_PARAMETER - The DHCP option is mal-formated
--*/
{
switch (Tag) {
case DHCP_TAG_NETMASK:
Para->NetMask = NetGetUint32 (Data);
break;
case DHCP_TAG_ROUTER:
//
// Return the first router to consumer which is the preferred one
//
Para->Router = NetGetUint32 (Data);
break;
case DHCP_TAG_LEASE:
Para->Lease = NetGetUint32 (Data);
break;
case DHCP_TAG_OVERLOAD:
Para->Overload = *Data;
if ((Para->Overload < 1) || (Para->Overload > 3)) {
return EFI_INVALID_PARAMETER;
}
break;
case DHCP_TAG_TYPE:
Para->DhcpType = *Data;
if ((Para->DhcpType < 1) || (Para->DhcpType > 9)) {
return EFI_INVALID_PARAMETER;
}
break;
case DHCP_TAG_SERVER_ID:
Para->ServerId = NetGetUint32 (Data);
break;
case DHCP_TAG_T1:
Para->T1 = NetGetUint32 (Data);
break;
case DHCP_TAG_T2:
Para->T2 = NetGetUint32 (Data);
break;
}
return EFI_SUCCESS;
}
