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Commit Graph

33 Commits

Author SHA1 Message Date
Tom Gundersen
624b5a636f networkd: correctly handle manager_free(NULL) 2014-02-13 01:41:32 +01:00
Tom Gundersen
60ad0c85e5 networkd: work inside containers
Udev does not run in containers, so instead of relying on it to tell us when a
network device is ready to be used by networkd, we simply assume that any
device was fully initialized before being added to the container.
2014-02-12 17:04:35 +01:00
Tom Gundersen
1a43680949 networkd: netdev - rename Netdev to NetDev
Both in the configuration file format and everywhere else in the code.
2014-02-07 17:07:11 +01:00
Tom Gundersen
a6cc569e33 sd-dhcp-client: split sd_dhcp_lease from sd_dhcp_client
This allows us users of the library to keep copies of old leases. This is
used by networkd to know what addresses to drop (if any) when the lease
expires.

In the future this may be used by DNAv4 and sd-dhcp-server.
2014-02-07 15:48:35 +01:00
Tom Gundersen
50add2909c networkd: netdev - reduce chance of race when receiving netdev's ifindex
When creating a new link, the kernel will not inform us about the new ifindex
in its ack. We have to listen for newly created devices and deduce the new
ifindex by matching on the ifname.

We used to do this by waiting for a new device from libudev, but that is asking
for trouble, as udev will happily rename the device before handing it to us.
Listen on rtnl instead, the chance of the name being changed before reaching us
is much smaller (if not nil).

Kernel patch in the works to make this unneccessary.
2014-01-30 14:30:39 +01:00
Tom Gundersen
52433f6b65 networkd: add basic bonding support
Refactor bridging support to be generic netdev support and extend it to
cover bonding as well.
2014-01-22 17:56:49 +01:00
Tom Gundersen
039ebe6aeb sd-dhcp-client/networkd: add domainname support 2014-01-18 17:52:10 +01:00
Tom Gundersen
bcbca8291f networkd: don't hard depend on system bus
We may not have a dbus daemon in the initrd (until we can rely on kdbus). In
this case, simply ignore any attempts at using the bus. There is only one user
for now, but surely more to come.

In order to work reliably in the real root without kdbus, but at the same time
don't delay boot when kdbus is in use, order ourselves after dbus.service.
2014-01-18 01:56:41 +01:00
Tom Gundersen
b2ad8a16ee networkd: resolv.conf - reword comment
Take into account that users may want to use resolvconf(8), or similar. Also,
avoid repeated calls to fputs().
2014-01-18 00:59:07 +01:00
Tom Gundersen
5d8364b3c5 networkd: resolv.conf - extend the comment a bit 2014-01-16 20:32:09 +01:00
Tom Gundersen
7ae4ef6d23 sd-dhcp-client: refactor DNS support
Rather than keeping an array of pointers to addresses, just keep an array of addresses.
2014-01-16 20:32:08 +01:00
Tom Gundersen
1346b1f038 sd-dhcp-client/networkd: add transient hostname support 2014-01-16 20:32:08 +01:00
Tom Gundersen
f3621dec52 networkd: fix wording 2014-01-12 15:44:40 +01:00
Tom Gundersen
3bef724f7e networkd: generate resolv.conf
This adds support to generate a basic resolv.conf in /run/systemd/network.
This file will not take any effect unless a symlink is created from
/etc/resolv.conf.

Nameservers received over DHCP takes precedence over statically configured ones.

Note: /etc/resolv.conf is severely limited, so in the future we will likely
rather provide a much more powerfull nss plugin (or something to that effect),
but this should allow current users to function without any loss of
functionality.
2014-01-12 15:37:21 +01:00
Zbigniew Jędrzejewski-Szmek
2ad8416dd0 No need to canonicalize fixed paths 2014-01-08 22:15:27 -05:00
Tom Gundersen
8b264404b6 networkd: link hash uses 64, not 32 bit keys 2014-01-03 18:27:26 +01:00
Tom Gundersen
aa3437a573 networkd: print the ifindex of added links
This debug information may be useful when comapring to dropped rtnetlink messages.
2014-01-03 18:20:11 +01:00
Tom Gundersen
2672953bde networkd: improve logging
This gives a bit better messages when a link is added twice.
2014-01-03 16:56:09 +01:00
Tom Gundersen
d0d311d62f networkd: add some debug info about notifications we ignore 2014-01-03 16:02:12 +01:00
Tom Gundersen
06a6e59301 networkd: only track state of links we are managing
If a network is not (yet) set for a link, we do not care about its state (as we
anyway don't know what to do with it).
2014-01-02 15:56:10 +01:00
Tom Gundersen
449f755492 networkd: improve logging
Remove redundant messages, add some debugging ones and make wording more uniform.
2014-01-02 15:49:23 +01:00
Lennart Poettering
e120204729 core,logind,networkd: check for udev device initialization via enumeration matches
Instead of checking each device after we got it, check wuth an
enumeration filter instead, to make it more efficient.
2013-12-18 18:21:28 +01:00
Lennart Poettering
bf5332d2bf core,logind,networkd: don't pick up devices from udev before they finished udev initialization
Managers shouldn't pick up the devices the manage before udev finished
initialization, hence check explicitly for that.
2013-12-18 03:37:26 +01:00
Tom Gundersen
22936833e1 networkd: rename link_update_flags to link_update
We are likely to track more than the flags in the future.
2013-12-17 22:08:12 +01:00
Lennart Poettering
7b77ed8cf3 event: be more conservative when returning errors from event handler callbacks
We really should return errors from event handlers if we have a
continous problem and don't know any other solution.
2013-12-13 04:06:43 +01:00
Lennart Poettering
cde93897cd event: hook up sd-event with the service watchdog logic
Adds a new call sd_event_set_watchdog() that can be used to hook up the
event loop with the watchdog supervision logic of systemd. If enabled
and $WATCHDOG_USEC is set the event loop will ping the invoking systemd
daemon right after coming back from epoll_wait() but not more often than
$WATCHDOG_USEC/4. The epoll_wait() will sleep no longer than
$WATCHDOG_USEC/4*3, to make sure the service manager is called in time.

This means that setting WatchdogSec= in a .service file and calling
sd_event_set_watchdog() in your daemon is enough to hook it up with the
watchdog logic.
2013-12-11 18:20:09 +01:00
Tom Gundersen
dd3efc0993 networkd: add link-sense and simplify state-machine a bit
This listens to rtnetlink for changes to IFF_UP and IFF_LOWER_UP (link sense). The latter
is simply logged at the moment, but will be useful once we add dhcp support.
2013-12-04 14:15:13 +01:00
Tom Gundersen
02b59d57e0 networkd: add bridge support
A bridge is specified in a .netdev file with a section [Bridge]
and at least the entry Name=.

A link may be joined to a bridge if the .network applied to it has
a Bridge= entry giving the name of the bridge in its [Network] section.

We eagerly create all bridges on startup, and links are added to
bridges as soon as they both appear.
2013-11-26 01:32:25 +01:00
Tom Gundersen
002f5de9a9 networkd: don't filter on udev tags
This removed the requirement for devices to be tagged with
'systemd-networkd' before they will be visible to networkd.

Still, as by default we don't ship any .network files, network
devices will simply be tracked, but not touched, unless the
admin configures things explicitly.
2013-11-21 15:33:02 +01:00
Tom Gundersen
0617ffabe8 networkd: make sure Links and Networks are freed 2013-11-19 14:39:19 +01:00
Tom Gundersen
f882c247ad networkd: make all calls async 2013-11-17 23:12:27 +01:00
Lennart Poettering
afc6adb5ec bus: introduce concept of a "default" event loop per-thread and make use of it everywhere
Try to emphasize a bit that there should be a mapping between event
loops and threads, hence introduce a logic that there's one "default"
event loop for each thread, that can be queried via
"sd_event_default()".
2013-11-12 00:12:43 +01:00
Tom Gundersen
f579559b3a networkd: add a basic network daemon
This daemon listens for and configures network devices tagged with
'systemd-networkd'. By default, no devices are tagged so this daemon
can safely run in parallel with existing network daemons/scripts.

Networks are configured in /etc/systemd/network/*.network. The first .network
file that matches a given link is applied. The matching logic is similar to
the one for .link files, but additionally supports matching on interface name.

The mid-term aim is to provide an alternative to ad-hoc scripts currently used
in initrd's and for wired setups that don't change much (e.g., as seen on
servers/and some embedded systems).

Currently, static addresses and a gateway can be configured.

Example .network file:

[Match]
Name=wlp2s0

[Network]
Description=My Network
Gateway=192.168.1.1
Address=192.168.1.23/24
Address=fe80::9aee:94ff:fe3f:c618/64
2013-11-09 23:41:17 +01:00