Add some generic plumbing and wire it up for OvmfPkgX64 so that IPv4
and/or IPv6 networking can be turned off from the QEMU command line.

This is a follow-up to Yuan's patch '[PATCH v1 0/2] Add support to
disable VirtIo net at runtime' which only targeted the virtio network
driver specifically.i

Changes since v1:
- instead of a NULL class library that calls the Exit() boot service
  from its constructor, use a replacement for the UefiDriverEntryPoint
  library

Cc: Yuan Yu <yuanyu@google.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Pawel Polawski <ppolawsk@redhat.com>
Cc: Oliver Steffen <osteffen@redhat.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Brian J. Johnson <brian.johnson@hpe.com>

Ard Biesheuvel (2):
  OvmfPkg: Introduce alternate UefiDriverEntrypoint to inhibit driver
    load
  OvmfPkg/OvmfPkgX64: Allow runtime control of IPv4 and IPv6 support

 OvmfPkg/Library/UefiDriverEntryPointFwCfgOverrideLib/UefiDriverEntryPointFwCfgOverrideLib.c   | 147 ++++++++++++++++++++
 OvmfPkg/Library/UefiDriverEntryPointFwCfgOverrideLib/UefiDriverEntryPointFwCfgOverrideLib.inf |  57 ++++++++
 OvmfPkg/OvmfPkg.dec                                                                           |   4 +
 OvmfPkg/OvmfPkgX64.dsc                                                                        |  14 ++
 4 files changed, 222 insertions(+)
 create mode 100644 OvmfPkg/Library/UefiDriverEntryPointFwCfgOverrideLib/UefiDriverEntryPointFwCfgOverrideLib.c
 create mode 100644 OvmfPkg/Library/UefiDriverEntryPointFwCfgOverrideLib/UefiDriverEntryPointFwCfgOverrideLib.inf

-- 
2.35.1



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