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David S. Miller 428168f995 Merge branch 'mlxsw-trap-adjacency' 
Ido Schimmel says:

====================
mlxsw: Alter trap adjacency entry allocation scheme

In commit 0c3cbbf96d ("mlxsw: Add specific trap for packets routed via
invalid nexthops"), mlxsw started allocating a new adjacency entry
during driver initialization, to trap packets routed via invalid
nexthops.

This behavior was later altered in commit 983db6198f ("mlxsw:
spectrum_router: Allocate discard adjacency entry when needed") to only
allocate the entry upon the first route that requires it. The motivation
for the change is explained in the commit message.

The problem with the current behavior is that the entry shows up as a
"leak" in a new BPF resource monitoring tool [1]. This is caused by the
asymmetry of the allocation/free scheme. While the entry is allocated
upon the first route that requires it, it is only freed during
de-initialization of the driver.

Instead, this patchset tracks the number of active nexthop groups and
allocates the adjacency entry upon the creation of the first group. The
entry is freed when the number of active groups reaches zero.

Patch #1 adds the new entry.

Patch #2 converts mlxsw to start using the new entry and removes the old
one.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2021-09-22 14:35:02 +01:00
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Documentation net: wwan: iosm: devlink fw flashing & cd collection documentation 2021-09-20 10:03:37 +01:00
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README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.