Replace locks on /var/run/mwan3.lock with locks via procd.
This fixes a deadlock issue where mwan3 stop would have a procd
lock, but a hotplug script would have the /var/run/mwan3.lock
Locking can be removed from mwan3rtmon since:
1) procd will have sent the KILL signal to the process during
shutdown, so it will not add routes to already removed interfaces on
mwan3 shutdown and
2) mwan3rtmon checks if an interface is active based on the
mwan3_iface_in_<IFACE> entry in iptables, and the hotplug script
always adds this before creating the route table and removes it
before deleting the route table
Fixes github issue #13704
(https://github.com/openwrt/packages/issues/13704)
start all mwan3mon and mwan3track instances on mwan3 start
if an interface is down when mwan3track starts, it waits
for a signal from the hotplug script to start
procd can then handle stopping all of the scripts when mwan3
is halted
Signed-off-by: Aaron Goodman <aaronjg@stanford.edu>
improve startup and runtime performance by
1) moving common startup procedures out of hotplug script when called
from mwan3 start
2) reducing calls to iptables to check status of rules
3) consolidating iptables updates and updating with iptables-restore
4) do not wait for kill if nothing was killed
5) running interface hotplug scripts in parallel
6) eliminate operations in hotplug script that check status on every
single interface unnecessarily
7) consolidate how mwan3track makes hotplug calls
8) do not restart mwan3track on connected events
This is a significant refactor, but should not result in any breaking
changes or require users to update their configurations.
version bump to 2.9.0
Signed-off-by: Aaron Goodman <aaronjg@stanford.edu>
This adjustment of the locks fixes the race condition when a mwan3
hotplug script and a mwan3 command are running at the same time.
Signed-off-by: Florian Eckert <fe@dev.tdt.de>
User scripts conversion from luci-app-wan3 will be simplified if the variables
are passed by env instead of arguments.
Signed-off-by: Florian Eckert <fe@dev.tdt.de>
Aaron Goodman
Florian Eckert