Module Name: src
Committed By: riastradh
Date: Wed Jul 31 00:25:47 UTC 2024
Modified Files:
src/sys/net: if_wg.c
Log Message:
wg(4): Make a rule for who wins when both peers send INIT at once.
The rule is that the peer with the numerically smaller public key
hash, in little-endian, takes priority iff the low order bit of
H(peer A pubkey) ^ H(peer B pubkey) ^ H(posix minutes as le64)
is 0, and the peer with the lexicographically larger public key takes
priority iff the low-order bit is 1.
Another case of:
PR kern/56252: wg(4) state machine has race conditions
PR kern/58463: if_wg does not work when idle.
This one is, as far as I can tell, simply a deadlock in the protocol
of the whitepaper -- until both sides give up on the handshake and
one of them (but not both) later decides to try sending data again.
(But not related to our t_misc:wg_rekey test, as far as I can tell,
and I haven't put enough thought into how to reliably trigger this
race to write a new automatic test for it.)
To generate a diff of this commit:
cvs rdiff -u -r1.129 -r1.130 src/sys/net/if_wg.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
