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Initial support for vmnet.framework

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On macOS, tap devices for L2 networking are not supported out of the
box. While a kext can be added to provide tap support, the kext
experience is not very good; Apple has strongly recommended against
their usage.

As a replacement that's documented and recommended, Apple introduced the
vmnet framework, intended for emulators and virtualization software
explicitly. This API requires macOS 10.10, with bridged network support
coming in macOS 10.15.

This introduces basic support for vmnet.framework in SIMH. I've tested
it by booting an emulated MicroVAX 3800 from an emulated InfoServer 150,
where it was able to reach OpenVMS 7.3 standalone BACKUP.
This commit is contained in:
Calvin Buckley
2025-01-25 22:35:25 -04:00
committed by Paul Koning
parent ad3e744951
commit 361ef76dbc
4 changed files with 167 additions and 0 deletions
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cmake/dep-link.cmake
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@@ -351,6 +351,11 @@ if (WITH_NETWORK)
list(APPEND NETWORK_PKG_STATUS "NAT(SLiRP)")
endif (WITH_SLIRP)
if (WITH_VMNET AND APPLE)
target_link_libraries(simh_network INTERFACE "-framework vmnet")
target_compile_definitions(simh_network INTERFACE HAVE_VMNET_NETWORK)
endif(WITH_VMNET AND APPLE)
## Finally, set the network runtime
if (NOT network_runtime)
## Default to USE_SHARED... USE_NETWORK is deprecated.