Merge branch 'sockmap-uapi-updates-and-fixes'

John Fastabend says:

====================
sockmap UAPI updates and fixes

This series updates sockmap UAPI, adds additional test cases and
provides a couple fixes.

First the UAPI changes. The original API added two sockmap specific
API artifacts (a) a new map_flags field with a sockmap specific update
command and (b) a new sockmap specific attach field in the attach data
structure. After this series instead of attaching programs with a
single command now two commands are used to attach programs to maps
individually. This allows us to add new programs easily in the future
and avoids any specific sockmap data structure additions. The
map_flags field is also removed and instead we allow socks to be
added to multiple maps that may or may not have programs attached.
This allows users to decide if a sock should run a SK_SKB program type
on receive based on the map it is attached to. This is a nice
improvement. See patches for specific details.

More test cases were added to test above changes and also stress test
the interface.

Finally two fixes/improvements were made. First a missing rcu
section was added. Second now sockmap can build without KCM being
used to trigger 'y' on CONFIG_STREAM_PARSER by selecting a new
BPF config option.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

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