git: wg: Improve noise_keypair_counter_check() to return different errnos

[Aaron LI]

commit 79d60aa058c32339377935fb6201771e86a0f318
Author: Aaron LI <aly at aaronly.me>
Date:   Tue Jan 30 23:12:58 2024 +0800

    wg: Improve noise_keypair_counter_check() to return different errnos
    
    Use different errnos (i.e., EINVAL, ESTALE, EEXIST) for different
    failure cases in noise_keypair_counter_check().  Meanwhile, update the
    selftest code to test this function more vigorously.
    
    In addition, add function description and comments to help understand
    it.

Summary of changes:
 sys/net/wg/if_wg.c            |  4 +-
 sys/net/wg/selftest/counter.c | 98 +++++++++++++++++++++----------------------
 sys/net/wg/wg_noise.c         | 43 ++++++++++++++-----
 sys/net/wg/wg_noise.h         |  2 +-
 4 files changed, 84 insertions(+), 63 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/79d60aa058c32339377935fb6201771e86a0f318


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