K 10
svn:author
V 8
melifaro
K 8
svn:date
V 27
2019-12-31T17:26:53.611535Z
K 7
svn:log
V 652
Split gigantic rtsock route_output() into smaller functions.

Amount of changes to the original code has been intentionally minimised
to ease diffing.
The changes are mostly mechanical, with the following exceptions:

* lltable handler is now called directly based of RTF_LLINFO flag presense.
* "report" logic for updating rtm in RTM_GET/RTM_DELETE has been simplified,
  fixing several potential use-after-free cases in rt_addrinfo.
* llable asserts has been replaced with error-returning, preventing kernel
  crashes when lltable gw af family is invalid (root required).

MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D22864

END