CVSROOT: /cvs
Module name: src
Changes by: ren...@cvs.openbsd.org 2015/07/20 22:58:48
Modified files:
usr.sbin/ldpd : ldpe.c ldpe.h neighbor.c
Log message:
Fix some awful ipc synchronization issues.
Under some rare circumstances the following can happen:
1 - one neighbor sends a label withdraw followed by a fatal notification
message;
2 - ldpe parses the label withdraw and sends it to lde;
3 - ldpe parses the fatal notification message and closes the session;
4 - lde processes the label withdraw and asks ldpe to send a label release;
5 - at around the same time, ldpe restarts the session with the neighbor;
6 - ldpe processes the lde message and then sends a label release to the new
neighbor.
The problem is that we don't want a message enqueue to a neighbor to be sent
after the session is restarted. If a session is closed, all the enqueued
messages should be discarded.
To acomplish this, we update the peerid of the nbr structure everytime the
session is established.
ok claudio@
