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Rely on modules being built-in or autoloaded on-demand.
As networkd is a network facing service, we want to limits its capabilities,
as much as possible. Also, we may not have CAP_SYS_MODULE in a container,
and we want networkd to work the same there.
Module autoloading does not always work, but should be fixed by the kernel
patch f98f89a0104454f35a: 'net: tunnels - enable module autoloading', which
is currently in net-next and which people may consider backporting if they
want tunneling support without compiling in the modules.
Early adopters may also use a module-load.d snippet and order
systemd-modules-load.service before networkd to force the module
loading of tunneling modules.
This sholud fix the various build issues people have reported.
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This patch enables vti tunnel support.
example conf:
file : vti.netdev
[NetDev]
Name=vti-tun
Kind=vti
MTUBytes=1480
[Tunnel]
Local=X.X.X.X
Remote=X.X.X.X
file: vti.network
[Match]
Name=em1
[Network]
Tunnel=vti-tun
TODO:
Add more attributes for vti tunnel
IFLA_VTI_IKEY
IFLA_VTI_OKEY
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This patch adds path of mtu discovery for sit tunnel.
To enable/disable DiscoverPathMTU is introduced.
Example configuration
file: sit.netdev
[NetDev]
Name=sit-tun
Kind=sit
MTUBytes=1480
[Tunnel]
DiscoverPathMTU=1
Local=X.X.X.X
Remote=X.X.X.X
By default pmtudisc is turned on , if DiscoverPathMTU
is missing from the config. To turn it off
DiscoverPathMTU=0 needs to be set.
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This patch enables gre tunnel support.
example conf:
file : gre.netdev
[NetDev]
Name=gre-tun
Kind=gre
MTUBytes=1480
[Tunnel]
Local=X.X.X.X
Remote=X.X.X.X
file: gre.network
[Match]
Name=em1
[Network]
Tunnel=gre-tun
TODO:
Add more attributes for gre tunnel
IFLA_GRE_IFLAGS
IFLA_GRE_IFLAGS
IFLA_GRE_IKEY
IFLA_GRE_OKEY
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This patch adds veth device support to networkd.
Example conf:
File: veth.netdev
[NetDev]
Name=veth-test
Kind=veth
[Peer]
Name=veth-peer
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This allows us to run networkd mostly unpriviliged with the exception of
CAP_NET_* and CAP_SYS_MODULE. I'd really like to get rid of the latter
though...
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Djalal Harouni <tixxdz@opendz.org>:
There is also this one genrated by LTO, IMO it's a false positive since
we do *check* for "lease" but the code is not consistent since in that
code path, "lease" is initialized to NULL in other places, except for
this one:
src/resolve/resolved-manager.c: In function 'manager_update_resolv_conf':
src/libsystemd-network/sd-dhcp-lease.c:67:18: warning: 'lease' may be used uninitialized in this function [-Wmaybe-uninitialized]
if (lease->dns_size) {
^
src/network/sd-network.c:146:24: note: 'lease' was declared here
sd_dhcp_lease *lease;
^
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This reverts commit 351efdc7a4d900a1aebca517dd0b46b89cdd7306.
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Thanks to Kay for tracking this down.
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This patch introduces sit tunnel support to networkd
Example conf:
file: sit.netdev
[NetDev]
Name=sit-tun
Kind=sit
MTUBytes=1480
[Tunnel]
Local=10.65.223.238
Remote=10.65.223.239
file: sit.network
[Match]
Name=em1
[Network]
Tunnel=sit-tun
[tomegun: rebased]
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Expose states 'degraded' or 'routable' if a link has a site/link-local or a routable address, respectively.
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Also remove the equivalent functionality from networkd.
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We will still use the compiled-in defaults if no DNS entry exists in the config file.
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This way we preserve the order of preference.
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Similarly to NTP servers, this can be set at compile-time.
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attached to a bus connection
This makes callback behaviour more like sd-event or sd-resolve, and
creates proper object for unregistering callbacks.
Taking the refernce to the slot is optional. If not taken life time of
the slot will be bound to the underlying bus object (or in the case of
an async call until the reply has been recieved).
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Add support for ipip tunnel ttl.
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Also, keep the kmod_new internal to networkd-manager.c
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This patch enables basic ipip tunnel support.
It works with kernel module ipip
example conf:
file: ipip.netdev
[NetDev]
Name=ipip-tun
Kind=ipip
MTUBytes=1480
[Tunnel]
Local=192.168.223.238
Remote=192.169.224.239
TTL=64
file: ipip.network
[Match]
Name=em1
[Network]
Tunnel=ipip-tun
[tomegun:
- drop unused variable
- take ref when enslaving]
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This is proof-of-concept only, as we only log the changes but don't do anything
with it.
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The bitmask is deprecated in the kernel, so move to the new interface. At the moment
this does not make a difference for us, but it avoids having to change the API in the future.
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Make the logging less verbose by only printing all the changed flags on one line,
at the same time make it more complete by supporting all flags currently supported
by the kernel.
We still fall back to printing the raw flags in case we get something we do not recognize
This may be useful when running on new kernels.
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Make it fit with what is logged from the link.
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We were ignoring the wrong errno.
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When enslaving devices, we may receieve DELLINK/NEWLINK for the same ifindex,
let's not be confused by this.
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