git: wg: Port #33: refactor noise remote functions to avoid epoch

[Aaron LI]

commit ef7d48a714d34e320587cd6843ee9683746a8c0f
Author: Aaron LI <aly at aaronly.me>
Date:   Fri Dec 29 23:59:56 2023 +0800

    wg: Port #33: refactor noise remote functions to avoid epoch
    
    - Refactor the functions to avoid using epoch or deferred operations.
      So noise_remote_free() is simplified and no longer requires an async
      cleanup function.
    - Remove 'refcount_acquire_if_not_zero()' and use plain refcount instead,
      since there's no more deferred frees.
    - Use shared locks instead of epoch sections; meanwhile, rename
      'l_remote_mtx'/'l_index_mtx' to 'l_remote_lock'/'l_index_lock' because
      they now supports both shared and exclusive locks.
    - Simplify noise_remote_index_insert() and remove the unnecessary
      pre-trial.
    - Merge wg_peer_free_deferred() into wg_peer_destroy() and remove it.

Summary of changes:
 sys/net/wg/if_wg.c    |  51 +++++++++-----------
 sys/net/wg/wg_noise.c | 126 ++++++++++++++++++++------------------------------
 sys/net/wg/wg_noise.h |   2 +-
 3 files changed, 74 insertions(+), 105 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/ef7d48a714d34e320587cd6843ee9683746a8c0f


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