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The input data would have to be borked, so this is unlikely to happen,
but since we have a nice helper function to do it properly... why not?
CID #1261390.
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The crucial point here is that we will not change the settings of a netdev created by someone else
we simply use it as is and trust it was set up as intended.
This is confusing in the case of the pre-created netdev's (bond0 etc.), the solution should probably
be to simply make the kernel stop creating these devices as they are pretty useless.
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Introduce BindCarrier= to indicate the set of links that determine if
the current link should be brought UP or DOWN.
[tomegun: add a bit to commit message]
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This patch removes includes that are not used. The removals were found with
include-what-you-use which checks if any of the symbols from a header is
in use.
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Too generic name.
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Makes it a bit less ambiguous.
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The kernel does not like getting an empty container, so just always pass the parameter, even if
it is the default.
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connection
Just fall back to plain old event loop in this (highly unlikely) case.
In the glorious future when kdbus is upstream we can of course drop all this.
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On Tue, Feb 10, 2015 at 08:10:43PM +0100, Lennart Poettering wrote:
> Hmm, I think it would be nicer to use be32toh() here instead, since it
> ensures the macro is (to a limited degree) typesafe.
>
> Any chance you could rework that?
From: Paul Martin <paul.martin@codethink.co.uk>
Date: Wed, 11 Feb 2015 11:47:16 +0000
Subject: [PATCH] networkd dhcpv4 logging endian fix
On a big-endian host, systemd-networkd prints out IPv4 network
addresses byte reversed:
Feb 10 16:43:32 hostname systemd-networkd[151]: eth0 : DHCPv4 address 158.1.24.10/16 via 1.1.24.10
The address obtained is 10.24.1.158/16 and the route is
10.24.0.0/16 dev eth0 src 10.24.1.187
The macro ADDRESS_FMT_VAL() unpacks a "struct in_addr" in a
little-endian specific manner.
This patch forces the passed address into host order, then unpacks it.
On an x86 later than i486, compiled with -O2, the only extra overhead
is a single bswap instruction.
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Match{Name,OrginalName,Type,Driver,Path} can now take a space-separated glob of matches.
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Pass around Link objcets rather than FdbEntry objects. The link objects have an up-to-date
ifname we can use for logging. match_name sholud _never_ be used for anything except
matching. Firstly, it may be unset (usually is), and secondly it may not be up-to-date.
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Reported by Zbigniew.
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For now we only support the hardcoded values RT_SCOPE_{UNIVERSE,LOCAL,HOST},
and not numerical values or values from /etc/iproute2/rt_scopes.
This addresses https://bugs.freedesktop.org/show_bug.cgi?id=88508.
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This allows the admin to set the host-specific part of IPv6 addresses, but still
receive the prefix via SLAAC.
.network file snippet:
[Network]
IPv6Token=::12
gives:
$ ip token
token ::12 dev eth0
This closes https://bugs.freedesktop.org/show_bug.cgi?id=81177.
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This allows both IPv4 and IPv6 link-local addresses to be enabled or disabled. By default
we still enable IPv6LL and disable IPv4LL. The old config option is kept for backwards
compatibility, but removed from the documentation.
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Object path components must start with [A-Za-z_] (AFAIK).
Also the value of 'p' is undefined if asprintf fails.
Compare to user_bus_path() in src/login/logind-user-dbus.c:281.
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This would otherwise make the tests fail as we cannot grab the bus name.
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When we get kdbus we don't need these hackse.
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We will be woken up on rtnl or dbus activity, so let's just quit if some time has passed and that is the only thing that can happen.
Note that we will always stay around if we expect network activity (e.g. DHCP is enabled), as we are not restarted on that.
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Only unlink state files on DELLINK. This allows sd-network to be used even when networkd is not running.
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Only the very basics, more to come.
For now:
$ busctl tree org.freedesktop.network1
└─/org/freedesktop/network1
└─/org/freedesktop/network1/link
├─/org/freedesktop/network1/link/1
├─/org/freedesktop/network1/link/2
├─/org/freedesktop/network1/link/3
├─/org/freedesktop/network1/link/4
├─/org/freedesktop/network1/link/5
├─/org/freedesktop/network1/link/6
├─/org/freedesktop/network1/link/7
├─/org/freedesktop/network1/link/8
└─/org/freedesktop/network1/link/9
$ busctl introspect org.freedesktop.network1 /org/freedesktop/network1
NAME TYPE SIGNATURE RESULT/VALUE FLAGS
org.freedesktop.network1.Manager interface - - -
.OperationalState property s "carrier" emits-change
$ busctl introspect org.freedesktop.network1 /org/freedesktop/network1/link/1
NAME TYPE SIGNATURE RESULT/VALUE FLAGS
org.freedesktop.network1.Link interface - - -
.AdministrativeState property s "unmanaged" emits-change
.OperationalState property s "carrier" emits-change
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If we get a NEWLINK + NEWADDR between enumerating the links and enumerating the addresses, we
would get a warning that the link corresponding to the address does not exist. This is a false
warning as both the NEWLINK and NEWADDR would be processed after enumerating completed, so drop
it.
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After all it is now much more like strjoin() than strappend(). At the
same time, add support for NULL sentinels, even if they are normally not
necessary.
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Let's return the fd we found as return value in systemd_netlink_fd(),
instead of using call-by-reference.
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Still keep the non-socket activation code around for starting from the commandline, but
will likely drop that too in the future.
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Default to timing out after 120 seconds without a network connection. Setting a
timeout of 0 disables the timeout.
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We would otherwise wait for the interface to be completely configured, which
could take considerable time with IPv4LL. As a result nspawn was very slow
at obtaining IP addresses.
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In addition to the loopback device, also explicitly configured devices to be ignored.
Suggested by Charles Devereaux <systemd@guylhem.net>.
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Once IPv6 addresses have been acquired, assign these to the interface
with the prefix lengths taken from the ICMPv6 Router Advertisement
handling code. The preferred and valid IPv6 address lifetimes are
handed to the kernel which will clean up them if not renewed in time.
When a prefix announced via Router Advertisements expires, find all
addresses that match that prefix and update the address to have a
prefix length of 128 causing the prefix to be off-link.
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This patch introduces ipv6 gre and gretap.
test:
ip6gre.netdev:
[NetDev]
Name=ip6gretap
Kind=ip6gretap
[Tunnel]
Local=2a00:ffde:4567:edde::4987
Remote=2001:473:fece:cafe::5179
ip6gre.network:
[Match]
Name=eno16777736
[Network]
Tunnel=ip6gretap
ip link
6: ip6gre@eno16777736: <POINTOPOINT,NOARP> mtu 1448 qdisc noop state
DOWN mode DEFAULT group default
link/gre6 2a:00:ff:de:45:67:ed:de:00:00:00:00:00:00:49:87 peer
20:01:04:73:fe:ce:ca:fe:00:00:00:00:00:00:51:79
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This patch enables networkd to create IP6 tunnels
example conf:
ipip6.netdev:
[NetDev]
Name=ipip6-tunnel
Kind=ip6tnl
[Tunnel]
Mode=ip4ipv6
Local=2a00:ffde:4567:edde::4987
Remote=2001:473:fece:cafe::5179
ipip6.network
[Match]
Name=wlan0
[Network]
Tunnel=ipip6-tunnel
23: ipip6-tunnel@wlan0: <POINTOPOINT,NOARP> mtu 1452 qdisc noop state
DOWN mode DEFAULT group default
link/tunnel6 2a00:ffde:4567:edde::4987 peer 2001:473:fece:cafe::5179
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This patch introdeces gretap to networkd
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subscibe->subscribe
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