wenxu a69a85da45 netfilter: nft_payload: fix missing check for matching length in offloads
Payload offload rule should also check the length of the match.
Moreover, check for unsupported link-layer fields:

 nft --debug=netlink add rule firewall zones vlan id 100
 ...
 [ payload load 2b @ link header + 0 => reg 1 ]

this loads 2byte base on ll header and offset 0.

This also fixes unsupported raw payload match.

Fixes: 92ad6325cb ("netfilter: nf_tables: add hardware offload support")
Signed-off-by: wenxu <wenxu@ucloud.cn>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2019-10-24 12:27:29 +02:00
2019-10-22 14:01:35 -07:00
2019-10-13 16:37:36 -07:00

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.
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