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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-08-07 13:17:46 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-08-07 13:17:46 +0000 |
commit | 7f3a4257159dea8e7ef66d1a539dc6df708b8ed3 (patch) | |
tree | bcc69b5f4609f348fac49e2f59e210b29eaea783 /Documentation/userspace-api/netlink | |
parent | Adding upstream version 6.9.12. (diff) | |
download | linux-7f3a4257159dea8e7ef66d1a539dc6df708b8ed3.tar.xz linux-7f3a4257159dea8e7ef66d1a539dc6df708b8ed3.zip |
Adding upstream version 6.10.3.upstream/6.10.3
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'Documentation/userspace-api/netlink')
-rw-r--r-- | Documentation/userspace-api/netlink/genetlink-legacy.rst | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/Documentation/userspace-api/netlink/genetlink-legacy.rst b/Documentation/userspace-api/netlink/genetlink-legacy.rst index 70a77387f6..fa00598919 100644 --- a/Documentation/userspace-api/netlink/genetlink-legacy.rst +++ b/Documentation/userspace-api/netlink/genetlink-legacy.rst @@ -46,10 +46,16 @@ For reference the ``multi-attr`` array may look like this:: where ``ARRAY-ATTR`` is the array entry type. -array-nest -~~~~~~~~~~ +indexed-array +~~~~~~~~~~~~~ + +``indexed-array`` wraps the entire array in an extra attribute (hence +limiting its size to 64kB). The ``ENTRY`` nests are special and have the +index of the entry as their type instead of normal attribute type. -``array-nest`` creates the following structure:: +A ``sub-type`` is needed to describe what type in the ``ENTRY``. A ``nest`` +``sub-type`` means there are nest arrays in the ``ENTRY``, with the structure +looks like:: [SOME-OTHER-ATTR] [ARRAY-ATTR] @@ -60,9 +66,13 @@ array-nest [MEMBER1] [MEMBER2] -It wraps the entire array in an extra attribute (hence limiting its size -to 64kB). The ``ENTRY`` nests are special and have the index of the entry -as their type instead of normal attribute type. +Other ``sub-type`` like ``u32`` means there is only one member as described +in ``sub-type`` in the ``ENTRY``. The structure looks like:: + + [SOME-OTHER-ATTR] + [ARRAY-ATTR] + [ENTRY u32] + [ENTRY u32] type-value ~~~~~~~~~~ |