This also changes the logic when Priority= is not specified.
Previously, we request without FRA_PRIORITY attribute and kernel picks
the highest unused priority for the rule.
This makes networkd picks the highest unused priority and always request
FRA_PRIORITY attribute.
Previously, when UUID is requested for DUID, then the clients are
configured in callback of bus methods.
But now, 'request queue' was implemented, so we can use it to wait until
the product UUID is obtained.
networkd already has all information about routes. It is not necessary
to re-read them by using local_gateways().
This also makes manager_find_uplink() take family.
Add a new state of type LinkOnlineState which indicates whether a link
is online or not. The state is also used by networkd's manager to expose
the overall online state of the system.
The possible states are:
offline the link (or system) is offline
partial at least one required link is online (see below)
online all required links are online
For links, a link is defined to be "online" if:
- it is managed; and
- its operational state is within the range defined by
RequiredForOnline=; and
- it has an IPv4 address if RequiredFamilyForOnline=ipv4 or =both; and
- it has an IPv6 address if RequiredFamilyForOnline=ipv6 or =both.
A link is defined to be "offline" if:
- it is managed; and
- it is not online, i.e. its operational state is not within the range
defined by RequiredForOnline=, and/or it is missing an IP address in
a required address family.
Otherwise, the link online state is undefined (represented internally as
_LINK_ONLINE_STATUS_INVALID or -EINVAL). Put another way, networkd will
only offer a meaningful online state for managed links where
RequiredForOnline=yes.
For the manager, the online state is a function of the online state of
all links which are requried for online, i.e. RequiredForOnline=yes. If
all required links are online, then the manager online state is defined
to be "online". If at least one of the required links is online, then
the manager online state is defined to be "partial". If none of
the required links are online, then the manager online state is defined
to be "offline". If there are no managed links, or RequiredForOnline=no
for all managed links, then the manager online state is undefined as
above.
The purpose of the "partial" state is analogous to the --any switch in
systemd-networkd-wait-online.service(8). For example, a required link
which lacks a carrier on boot will not force the overall (manager)
online state to "offline" if there is an alternative link available.
Why is this necessary? Several examples below.
- When a route sets prefsrc, then the address must be already assigned
(see issue #19285), and also it must be ready if IPv6.
- When a route or nexthop sets gateway, then the address must be reachable.
- When a route sets nexthop ID, then the corresponding nexthop must be
assigned.
- When a route sets multipath routes on another interface, then the
interface must exist and be ready to configure.
- When configuring address, the same address must not be under removing
(see issue #18108).
Etc,. etc,...
So, this makes all requests about addresses, routes, and nethops are once
stored in the queue, and will be processed when they are ready to configure.
Fixes#18108 and #19285.
Previously, if DUID-UUID is used, all configurations are configured
after networkd gets product uuid of machine.
This makes only DHCP clients are delayed, and other configs are
configured earlier.
The commit 0b81225e57 makes that networkd
remove all foreign rules except those with "proto kernel".
But, in some situation, people may want to manage routing policy rules
with other tools, e.g. 'ip' command. To support such the situation,
this introduce ManageForeignRoutingPolicyRules= boolean setting.
Closes#19106.
I started working on this because I wanted to change how
DEFINE_TRIVIAL_CLEANUP_FUNC is defined. Even independently of that change, it's
nice to make make things more consistent and predictable.
We already handle foreign routing policy rules correctly by the previous
commit. So, the serialization/deserialization of rules are not necessary
anymore.
for planned nft backend we have three choices:
- open/close a new nfnetlink socket for every operation
- keep a nfnetlink socket open internally
- expose a opaque fw_ctx and stash all internal data here.
Originally I opted for the 2nd option, but during review it was
suggested to avoid static storage duration because of perceived
problems with threaded applications.
This adds fw_ctx and new/free functions, then converts the existing api
and nspawn and networkd to use it.
To make Driver= in [Match] section work in containers.
Note that ID_NET_DRIVER= property in udev database is set with the
result of the ethtool. So, this should not change anything for
non-container cases.
Closes#15678.
The code supports SIGTERM and SIGINT to termiante the process. It would
be possible to reporpose one of those signals for the restart operation,
but I think it's better to use a completely different signal to avoid
misunderstandings.
It seems that old kernels do not support prefix routes with
non-default route tables. This adds a fallback logic when adding route
fails. In that case, prefix route is created by kernel and the default
route table is used.
Yu Watanabe
Lennart Poettering
Alvin Šipraga
LetzteInstanz
Zbigniew Jędrzejewski-Szmek
Susant Sahani
Florian Westphal
William A. Kennington III