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c783a29c7e
This uses a pseudo-linearization scheme with a 64k global buffer, but BIG TCP arrival means IPv6 TCP stack can generate skbs that exceed this size. Use skb_linearize. It should be possible to rewrite this to properly deal with segmented skbs (i.e., only do small chunk-wise accesses), but this is going to be a lot more intrusive than this because every helper function needs to get the sk_buff instead of a pointer to a raw data buffer. In practice, provided we're really looking at FTP control channel packets, there should never be a case where we deal with huge packets. Fixes:7c4e983c4f("net: allow gso_max_size to exceed 65536") Fixes:0fe79f28bf("net: allow gro_max_size to exceed 65536") Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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.