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Florian Westphal says: ==================== Netfilter updates for net-next following patch set includes netfilter updates for your *net-next* tree. 1. Replace pr_debug use with nf_log infra for debugging in sctp conntrack. 2. Remove pr_debug calls, they are either useless or we have better options in place. 3. Avoid repeated load of ct->status in some spots. Some bit-flags cannot change during the lifeetime of a connection, so no need to re-fetch those. 4. Avoid uneeded nesting of rcu_read_lock during tuple lookup. 5. Remove the CLUSTERIP target. Marked as obsolete for years, and we still have WARN splats wrt. races of the out-of-band /proc interface installed by this target. 6. Add static key to nf_tables to avoid the retpoline mitigation if/else if cascade provided the cpu doesn't need the retpoline thunk. 7. add nf_tables objref calls to the retpoline mitigation workaround. 8. Split parts of nft_ct.c that do not need symbols exported by the conntrack modules and place them in nf_tables directly. This allows to avoid indirect call for 'ct status' checks. 9. Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not indicate an error if the referenced object (set, chain, rule...) did not exist, from Fernando. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
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.