| Commit message (Collapse) | Author | Age | Files | Lines |
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We may assume that if an user does build conntrackd with such feature, is with
the intention to use it. So, if that's the case, default to use it.
This eases some downstream use cases when dealing with default configs to
be shipped to final users.
This could be a mid-point solution, given some users are asking for a full
revert of commit c01d0d9138112ec95ee316385ea2687dd94fa4e3.
Signed-off-by: Arturo Borrero Gonzalez <arturo@netfilter.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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In order to prevent netlink buffer overrun, conntrackd is recommended to run
at max priority.
Make conntrackd to use a RT (SHED_RR) scheduler by default at max priority.
This is common among other HA daemons. For example corosync uses SCHED_RR
by default.
The scheduler configuration option is kept in order to allow admins to perform
fine-tuning, but it is deleted from example configuration files.
Note that this default sched priority is so high that it makes the nice value
useless, so deprecate the nice configuration. Anyway the nice value can be set
externally at runtime using nice/renice.
The code is moved to the init() routine. In case of error setting the
scheduler, the system default will be used. Report a message to the user
and continue working.
Signed-off-by: Arturo Borrero Gonzalez <arturo@debian.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This configuration option doesn't add any value to users.
Use the magic value of 100 (i.e, the socket will keep 100 pending connections),
which I think is fair enough for what conntrackd can do in the unix socket.
Signed-off-by: Arturo Borrero Gonzalez <arturo@debian.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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By default, conntrackd is compiled with no built-in systemd support.
This patch updates the default runtime behaviour to be consistent
with what ./configure provides by default.
Thus, users should explicitly indicate "Systemd On" in their configuration
file to enable this. This shouldn't cause any problem to old users of
conntrackd.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This patch adds basic systemd support.
The feature can be enabled/disabled at configure time:
./configure --disable-systemd
Also, at runtime in conntrackd.conf
General {
Systemd on|off
}
(by default it's enabled both at runtime and at configure time)
* tell systemd about conntrackd readiness:
When conntrackd starts, it will send systemd the data "READY=1".
At the point the data is sent, conntrackd is fully ready to work
(configuration was OK, sockets OK, et all), so other actions depending
on conntrackd can be safely chained in the machine boot process.
* tell systemd about conntrackd shutting down:
If the admin kills conntrackd with `conntrackd -k', the data "STOPPING=1"
will be send to systemd so it learns about the daemon shutting down. Same
for manual signals.
* watchdog support:
The admin can configure systemd to watch the conntrackd daemon and perform
some actions if conntrackd dies: restart it, reboot the machine, etc...
Signed-off-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This patch fixes the configuration file that includes an example of
the PollSecs clause in Stats. This is wrong since it should go in
the General clause.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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UDP filtering was broken during the addition of the UDP-based
synchronization protocol that was introduced in 0.9.14. This
patch fixes the problem.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This patch adds the missing support to filter IPv6 from kernel-space
by means of the BSF API that libnetfilter_conntrack provides.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This patch adds the NetlinkEventsReliable clause, this is useful
to turn on reliable Netlink event delivery. This features
requires a Linux kernel >= 2.6.31.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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With this patch, you can change the scheduler policy and priority
for conntrackd. Using a RT scheduler policy reduces the chances to
hit ENOBUFS in Netlink.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This patch adds two alias that removes an inconsistency in the
configuration file names. Now, the clauses that refers to Netlink
starts by the prefix "Netlink".
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This patch adds the clause PollSecs that changes the normal
behaviour of conntrackd. With PollSecs set to > 0, conntrackd
polls every N seconds the entries.
This is the opposed behaviour of an event-driven behaviour but may
be useful for those that have really strong limitations in terms of
CPU consumption and want to perform a relaxed replication.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This patch removes the use of /tmp to create the UNIX socket file to
communicate with conntrackd in the example configuration files. This was
OK in the early alpha days, but not anymore.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Logging is set off by default instead of what the example files state.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This patch reworks the user-space filtering. Although we have
kernel-space filtering since Linux kernel >= 2.6.26, we keep userspace
filtering to ensure backward compatibility. Moreover, this patch
prepares the implementation of the kernel-space filtering via
libnetfilter_conntrack's high-level berkeley socket filter API.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Simplify logging infrastructure
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stats mode
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o minor irrelevant fixes for uncommon error paths and fix several typos
o use LOG_INFO for connection logging, use LOG_NOTICE for other information
o minor error handling updates
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