This commit fixed what 6d99b602 was supposed to fix without affecting
interface-bound traffic.
Before 6d99b602 interface-bound traffic was working normally as long
as at least one interface was online. However when the last interface
went offline, it was impossible to ping and such state was
unrecoverable.
Commit 6d99b602 fixed unrecoverable offline state problem (it was
possible to ping -I iface) but messed inteface-bound traffic. Traffic
with interface source address was not working if the interface was in
"offline" state, even if another interface was online.
The problem was caused by an inconsistent "offline" interface state:
iptables-related rules were kept while routing table and policy were
deleted.
The idea behind this commit is to:
1. Keep all the rules for each interface (iptables, routing table,
policy) regardless of its state. This ensures consistency,
2. Make interface state hotplug events affect only iptables'
mwan3_policy_* rules. Interface-related iptables, routing table
and policy is removed only when mwan3 is manually stopped.
To make such changes possible, it's necessary to change the way
mwan3_policy_* rule generator keeps track of interface state hotplug
events.
Until now, it checked for the existence of custom interface-related
routing table (table id 1, 2, 3, ...). Clearly we can no longer rely
on that so each interface state is stored explicitly in file.
Signed-off-by: Marcin Jurkowski <marcin1j@gmail.com>
Use common function to toggle ip address in /var/state/mwan3.
Change also to use toggle function and not set function. If ip address
is often changed every change is saved to /var/state/mwan3.
Signed-off-by: Florian Eckert <fe@dev.tdt.de>
If enough tracking ip are pinged skip the reset. They are not needed
anymore to mark the interface as up.
Signed-off-by: Florian Eckert <fe@dev.tdt.de>
Fixes the following bugs introduced in commit 815e83d4:
- hotplug: invalid parameter order when initial interface state is "online",
mwan3track expects initial state to be the third argument
- hotplug: missing source ip address when initial interface state is "offline"
- mwan3track: source ip address should be the fourth argument
Signed-off-by: Marcin Jurkowski <marcin1j@gmail.com>
Add new globals config section with option local_source.
With this config option the self interface generation will be done now
automatically on hotplug event. You can specify which interface (ip)
sould be used for router traffic. To replace the self intereface in the
config set local_source to "lan".
The default option is none, so it will not change default behavior if a
"self" interface is configured in the network section.
Signed-off-by: Florian Eckert <fe@dev.tdt.de>
To know how old the ubus output is, add an age parameter which indicats
how old the check informations on the interface are.
Signed-off-by: Florian Eckert <fe@dev.tdt.de>
Add new interface config option "inital_state".
If interface comeing up the first time(mwan3 start, boot),
there are now two option for interface behaviour:
- online (default as is now)
Set up interface regardless wether tracking ip are reachable or not.
- offline
Set up interface first to ping tracking ip and if they are reachable set up
the interface completely.
Signed-off-by: Florian Eckert <fe@dev.tdt.de>
Even though error was fixed the interface checks still fails, if last_resort
was set to blackhole or unreachable.
To fix this issue do not remove failure interface from iptables change on
down event.
Reported-by: Colby Whitney <colby.whitney@luxul.com>
Signed-off-by: Florian Eckert <fe@dev.tdt.de>
If two interface have the same prefix "wan" for example "wan" and "wan1"
pgrep returns the PID for wan1 also "pgrep -f mwan3track wan".
Before this fix "wan1" was also killed! This is not what we want.
Signed-off-by: Florian Eckert <fe@dev.tdt.de>
Adds support for interface tracking using either ping, arping or
httping. This allows to track interface status on networks with filtered
ICMP traffic or simply to monitor data link layer etc.
To facilitate binding to a specified interface its IP address is passed
as a new mwan3track parameter. It's currently required by httping
and possibly by other tools that may be added in the future.
Signed-off-by: Marcin Jurkowski <marcin1j@gmail.com>
If more then one interface get up/down at once mwan3 could be in a
undefined state, because more then one mwan3 hotplug script are running
and editing the iptables.
Lock the critical section should solve this issue.
Signed-off-by: Florian Eckert <fe@dev.tdt.de>
If mwan3track will not stop immediately after sending the kill signal,
the clean_up handler will delete the pid file later while the new mwan3track is
already running.
This could result in a situation that mwan3track is running
more then once because the old mwan3track service could not be killed,
because the pid file is missing.
Using pgrep to kill all mwan3track for the tracked interface and not using
pid file should fix this issue.
Signed-off-by: Florian Eckert <fe@dev.tdt.de>
If netifd set an interface up/down which is not tracked by mwan3 the
connected network of that interface should regardless be added/removed to the
mwan3_connected ipset.
Signed-off-by: Florian Eckert <fe@dev.tdt.de>
If interface is getting down by netifd (unplug ethernet cable)
mwan3track will not recognize this change. It will also generate an
additional down event when he notice does his tracking interface is offline.
Mwan3track will now be informed by a signal (trap) USR1 during down event
that the interface is already down. An additional down event will not be
generated.
Signed-off-by: Florian Eckert <fe@dev.tdt.de>
If mwan3track detects a failure the interval check will change to
"failure_interval" value until this interface is declared "offline".
After interface gets "offline" normal "interval" value is used again.
If interface ping is successful again "recovery_interval" value is used until
interface is declared "online" again.
Using the different intervals will accelerate the wan line detections on
failure and recovery.
Signed-off-by: Florian Eckert <fe@dev.tdt.de>
On interfaces with interface proto "qmi|ncm" and option dhcp
enabled the interface will be changed to $iface_4 | $iface_6. The
interface mapping in mwan3 will not recognize this interface. To fix
this issue an ubus call will check if an upper interface exists.
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>
