git: wg: Some code cleanups, minor improvements and comment updates

[Aaron LI]

commit 015567cbb477e043923e80386070b2ef918bdf25
Author: Aaron LI <aly at aaronly.me>
Date:   Wed Feb 7 22:25:49 2024 +0800

    wg: Some code cleanups, minor improvements and comment updates
    
    - Clean up some code logics to make the conditional flow and error
      handling more smooth.
    - Add and update various comments to make the code more understandable.
      A large fraction of the comments are derived from the WireGuard code
      in Linux/OpenBSD, and from commit messages.

Summary of changes:
 sys/net/wg/if_wg.c    | 203 ++++++++++++++++++++++++++++++++++----------------
 sys/net/wg/wg_noise.c |  14 +++-
 2 files changed, 149 insertions(+), 68 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/015567cbb477e043923e80386070b2ef918bdf25


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