1. add library function NetLibDetectMedia to NetLib for media detection
2. update MnpDxe to periodically poll for media status update and check for media status before packet transmit
3. update Ip4Dxe to return ModeData using Mnp->GetModeData()
4. update IScsiDxe to check for media status before try to do DHCP and session login
5. update UefiPxeBcDxe to check for media status before PXE start
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9919 6f19259b-4bc3-4df7-8a09-765794883524
EFI_SIGNATURE_16 -> SIGNATURE_16
EFI_SIGNATURE_32 -> SIGNATURE_32
EFI_SIGNATURE_64 -> SIGNATURE_64
EFI_FIELD_OFFSET -> OFFSET_OF
EFI_MAX_BIT -> MAX_BIT
EFI_MAX_ADDRESS -> MAX_ADDRESS
These macros are not defined in UEFI spec. It makes more sense to use the equivalent macros in Base.h to avoid alias.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7056 6f19259b-4bc3-4df7-8a09-765794883524
2. Add DpcDxe module and DxeDpcLib module in MdeModulePkg
3. Port network stack module to use DPC.
4. Use MIN, and MAX defined in MdePkg to replace NET_MIN and NET_MAX.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@4307 6f19259b-4bc3-4df7-8a09-765794883524