PR/55729 CVS commit: src/sys/net

["Taylor R Campbell" <riastradh%netbsd.org@localhost>]

The following reply was made to PR kern/55729; it has been noted by GNATS.

From: "Taylor R Campbell" <riastradh%netbsd.org@localhost>
To: gnats-bugs%gnats.NetBSD.org@localhost
Cc: 
Subject: PR/55729 CVS commit: src/sys/net
Date: Sun, 28 Jul 2024 14:45:51 +0000

 Module Name:	src
 Committed By:	riastradh
 Date:		Sun Jul 28 14:45:51 UTC 2024
 
 Modified Files:
 	src/sys/net: if_wg.c
 
 Log Message:
 wg(4): On rx of valid ciphertext, make sure to update state machine.
 
 Previously, we also required the plaintext to be a plausible-looking
 IP packet before updating the state machine.
 
 But keepalive packets are empty -- and if the peer initiated the
 session to rekey after last tx but had no more data to tx, it will
 send a keepalive to finish session initiation.
 
 If we didn't update the state machine in that case, we would stay in
 INIT_PASSIVE state unable to tx on the session, which would make
 things hang.
 
 So make sure to always update the state machine once we have accepted
 a packet as genuine, even if it's genuine garbage on the inside.
 
 PR kern/55729: net/if_wg/t_misc:wg_rekey test case fails
 PR kern/56252: wg(4) state machine has race conditions
 PR kern/58463: if_wg does not work when idle.
 
 
 To generate a diff of this commit:
 cvs rdiff -u -r1.101 -r1.102 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.