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I was intending to make all the Netlink Spec code BSD-3-Clause
to ease the adoption but it appears that:
- I fumbled the uAPI and used "GPL WITH uAPI note" there
- it gives people pause as they expect GPL in the kernel
As suggested by Chuck re-license under dual. This gives us benefit
of full BSD freedom while fulfilling the broad "kernel is under GPL"
expectations.
Link: https://lore.kernel.org/all/20230304120108.05dd44c5@kernel.org/
Link: https://lore.kernel.org/r/20230306200457.3903854-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Pretty much all families use value: 1 or reserve as unspec
the first entry in attribute set and the first operation.
Make this the default. Update documentation (the doc for
values of operations just refers back to doc for attrs
so updating only attrs).
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Chuck run into an issue with a single-element attr-set which
only has an attr with value of 0. The search for max attr in
a struct records attrs with value larger than 0 only (max_val
is set to 0 at the start). Adjust the comparison, alternatively
max_val could be init'ed to -1. Somehow picking the last attr
of a value seems like a good idea in general.
Reported-by: Chuck Lever III <chuck.lever@oracle.com>
Fixes: be5bea1cc0bf ("net: add basic C code generators for Netlink")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The scripts require Python 3 and some distros are dropping
Python 2 support.
Reported-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Adapt the common object hierarchy in code gen and CLI.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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An earlier fix tried to address generated code jumping around
one code-gen run to another. Turns out dict()s are already
ordered since Python 3.7, the problem is that we iterate over
operation modes using a set(). Sets are unordered in Python.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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When rendering code we should walk the ops in the order in which
they are declared in the spec. This is both more intuitive and
prevents code from jumping around when hashing in the dict changes.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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ops_list contains all the operations, but the main iteration use
case is to walk only ops which define attrs. Rename ops_list to
msg_list, because now it looks like the contents are the same,
just the format is different. While at it convert from tuple
to just keys, none of the users care about the name of the op.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Lorenzo reports that after switching from enum to flags netdev
family lost ability to render kdoc (and the enum contents got
generally garbled).
Combine the flags and enum handling in uAPI handling.
Reported-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Code generators to turn Netlink specs into C code.
I'm definitely not proud of it.
The main generator is in Python, there's a bash script
to regen all code-gen'ed files in tree after making
spec changes.
Acked-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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