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[ Upstream commit bb7403655b3c3eb245d0ee330047cd3e20b3c4af ] In order to support IP_PKTINFO on those packets, we need to call ipv4_pktinfo_prepare. When sending mrouted/pimd daemons a cache report IGMP msg, it is unnecessary to set dst on the newly created skb. It used to be necessary on older versions until commitd826eb14ec("ipv4: PKTINFO doesnt need dst reference") which changed the way IP_PKTINFO struct is been retrieved. Changes from v1: 1. Undo changes in ipv4_pktinfo_prepare function. use it directly and copy the control block. Fixes:d826eb14ec("ipv4: PKTINFO doesnt need dst reference") Signed-off-by: Leone Fernando <leone4fernando@gmail.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.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.