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When __ip_options_compile() is called with an skb, the IP options are parsed from the skb data into the provided IP option argument. This is in contrast to the case where the skb argument is NULL and the options are parsed from opt->__data. Given that cipso_v4_error() always passes an skb to __ip_options_compile(), there is no need to allocate an extra 40 bytes (maximum IP options size). Therefore, simplify the function by removing these extra bytes and make the function similar to ipv4_send_dest_unreach() which also calls both __ip_options_compile() and __icmp_send(). This is a preparation for changing the arguments being passed to __icmp_send(). No functional changes intended. Reviewed-by: Petr Machata <petrm@nvidia.com> Reviewed-by: David Ahern <dsahern@kernel.org> Acked-by: Paul Moore <paul@paul-moore.com> Signed-off-by: Ido Schimmel <idosch@nvidia.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Link: https://patch.msgid.link/20250908073238.119240-2-idosch@nvidia.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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 reStructuredText 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.