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1) never bother with setting the flag for loopback devices
2) if we fail to write the flag due to EROFS (which is likely to happen
in containers where /proc/sys is read-only) or any other error, check
if the flag already has the right value. If so, don't complain.
Closes #469
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Ipv6 private extensions
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This patch add support for ipv6 privacy extensions.
The variable /proc/sys/net/ipv6/conf/<if>/use_tempaddr
can be changed via the boolean
IPv6PrivacyExtensions=[yes/no/prefer-temporary]
When true enables privacy extensions, but prefer public addresses over
temporary addresses.
prefer-temporary prefers temporary adresses over public addresses.
Defaults to false.
[Match]
Name=enp0s25
[Network]
IPv6PrivacyExtensions=prefer-temporary
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Error message for enumerating addresses was not 'addresses' but 'links'.
This patch fixes it.
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If a link is attempted t obe enslaved by a netdev that has already failed, we
must fail immediately and not save the callback for later, as it will then
never get triggered.
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This only happens when something has gone wrong, so is not easy to hit. However,
if a bridge (say) is configured on a system without bridge support we will hit
this.
Fixes issue #299.
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The kernel bonding layer allows passing an array of ARP IP targets as
bond-configuration. Due to the weird implementation of arrays in netlink
(which we haven't figure out a generic way to support, yet), we usually
hard-code the supported array-sizes. However, this should not be exported
from sd-netlink.
Instead, make sure the caller just uses it's current hack of enumerating
the types, and the sd-netlink core will have it's own list of supported
array-sizes (to be removed in future extensions, btw!). If either does not
match, we will just return a normal error.
Note that we provide 2 constants for ARP_IP_TARGETS_MAX now. However, both
have very different reasons:
- the constant in netdev-bond.c is used to warn the user that the given
number of targets might not be supported by the kernel (even though the
kernel might increase that number at _any_ time)
- the constant in sd-netlink is solely used due to us missing a proper
array implementation. Once that's supported in the type-system, it can
be removed without notice
Last but not least, this patch turns the log_error() into a log_warning().
Given that the previous condition was off-by-one, anyway, it never hit at
the right time. Thus, it was probably of no real use.
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Replaces strerror() usage with log_netdev_error_errno()
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This ports a lot of manual code over to sigprocmask_many() and friends.
Also, we now consistly check for sigprocmask() failures with
assert_se(), since the call cannot realistically fail unless there's a
programming error.
Also encloses a few sd_event_add_signal() calls with (void) when we
ignore the return values for it knowingly.
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The names fw-util.[ch] are too ambiguous, better rename the files to
firewall-util.[ch]. Also rename the test accordingly.
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Improve tun/tap logging by using the new log_*errno*() functions that set 'errno' explicitly. Also fix a bunch of incorrect errno/r confusions.
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Replaces strerror() usage with log_netdev_error_errno()
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IPForwarding=kernel v3
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In 5a8bcb674f71a20e95df55319b34c556638378ce, IPForwarding was introduced
to set forwarding flags on interfaces in .network files. networkd sets
forwarding options regardless of the previous setting, even if it was
set by e.g. sysctl. This commit creates a new option for IPForwarding,
"kernel", that preserves the sysctl settings rather than always setting
them.
See https://bugs.freedesktop.org/show_bug.cgi?id=89509 for the initial
bug report.
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sd-rtnl: make joining broadcast groups implicit
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networkd: bond - only set packets_per_slave on balance-rr mode
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Replace strerror() usage with log_netdev_error_errno()
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Replace strerror() usage with log_netdev_error_errno()
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dhcp domain option
previously hostname_is_valid was used to validate domain names, which
would silently drop perfectly valid dns names that were longer than a
single dns label.
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Otherwise the creation of the bond fails.
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networkd: bond improve logging
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utezduyar/use-async-convenience-function-on-setting-hostname
networkd: use async convenience call to set hostname
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Replaces a lof of strerror() usage with log_netdev_error_errno()
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Replaces a lof of strerror() usage with log_netdev_error_errno()
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Replaces a lof of strerror() usage with log_netdev_error_errno()
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networkd: actually always use AddressFamilyBoolean as the bit mask it is
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tree-wide: remove spurious space
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In 5a8bcb674f71a20e95df55319b34c556638378ce, IPForwarding was introduced
to set forwarding flags on interfaces in .network files. networkd sets
forwarding options regardless of the previous setting, even if it was
set by e.g. sysctl. This commit creates a new option for IPForwarding,
"kernel", that preserves the sysctl settings rather than always setting
them.
See https://bugs.freedesktop.org/show_bug.cgi?id=89509 for the initial
bug report.
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We ignore the return value of sd_device_get_devtype, then devtype could
be uninitialized when used with streq_ptr. So we need to initialize it
first.
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No functional changes.
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Passing ipv6 options (even when they should be noops) caused IFF_UP to fail when
ipv6 was supported.
Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=90103
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http://lists.freedesktop.org/archives/systemd-devel/2015-May/031598.html
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This reverts commit 43c6d5abacaebf813845934ec8d5e5ee3c431854
(and a small part of 4046d8361c55c80ab8577aea52523b9e6eab0d0c)
It turns out we don't actually need to set the global ip_forward setting.
The only relevant setting is the one on each interface.
What the global toggle actually does is switch forwarding on/off for all
currently present interfaces and change the default for new ones.
That means that by setting the global ip_forward we
- Introduce a race condition, because if the interface with IPForward=yes
is brought up after one with IPForward=no, both will have forwarding
enabled, because the global switch turns it on for all interfaces.
If the other interface comes up first networkd correctly sets forward=0
and it doesn't get overridden.
- Change the forwarding setting for interfaces that networkd is not
configured to touch, even if the user disabled forwarding via sysctl,
either globally or per-interface
As forwarding works fine without this, as long as all relevant interfacest
individually set IPForward=yes: just drop it
This means that non-networkd interfaces use the global default while
networkd interfaces default to off if IPForward isn't given.
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In containers we never have udev devices, so drop the assert.
This fixes an assertion introduced in af3aa302741b6edb0729925febb5f8bc26721fe3.
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This changes log_unit_info() (and friends) to take a real Unit* object
insted of just a unit name as parameter. The call will now prefix all
logged messages with the unit name, thus allowing the unit name to be
dropped from the various passed romat strings, simplifying invocations
drastically, and unifying log output across messages. Also, UNIT= vs.
USER_UNIT= is now derived from the Manager object attached to the Unit
object, instead of getpid(). This has the benefit of correcting the
field for --test runs.
Also contains a couple of other logging improvements:
- Drops a couple of strerror() invocations in favour of using %m.
- Not only .mount units now warn if a symlinks exist for the mount
point already, .automount units do that too, now.
- A few invocations of log_struct() that didn't actually pass any
additional structured data have been replaced by simpler invocations
of log_unit_info() and friends.
- For structured data a new LOG_UNIT_MESSAGE() macro has been added,
that works like LOG_MESSAGE() but prefixes the message with the unit
name. Similar, there's now LOG_LINK_MESSAGE() and
LOG_NETDEV_MESSAGE().
- For structured data new LOG_UNIT_ID(), LOG_LINK_INTERFACE(),
LOG_NETDEV_INTERFACE() macros have been added that generate the
necessary per object fields. The old log_unit_struct() call has been
removed in favour of these new macros used in raw log_struct()
invocations. In addition to removing one more function call this
allows generated structured log messages that contain two object
fields, as necessary for example for network interfaces that are
joined into another network interface, and whose messages shall be
indexed by both.
- The LOG_ERRNO() macro has been removed, in favour of
log_struct_errno(). The latter has the benefit of ensuring that %m in
format strings is properly resolved to the specified error number.
- A number of logging messages have been converted to use
log_unit_info() instead of log_info()
- The client code in sysv-generator no longer #includes core code from
src/core/.
- log_unit_full_errno() has been removed, log_unit_full() instead takes
an errno now, too.
- log_unit_info(), log_link_info(), log_netdev_info() and friends, now
avoid double evaluation of their parameters
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When setting IPv6 addresses acquired by DHCPv6, systemd-networkd sets
the IFA_F_NOPREFIXROUTE flag in the IFA_FLAGS netlink attribute. As
the flag and the attribute are present starting with Linux 3.14, older
kernels will need systemd-network to manage prefix route expiry.
By default, DHCPv6 addresses are first assigned setting the
IFA_F_NOPREFIXROUTE flag in the IFA_FLAGS netlink attribute. Should
the address assignment fail, the same assignment is tried without
the IFA_FLAGS attribute. Should also the second attempt fail, an error
is printed and address assignment ends with failure. As successful use
of the IFA_FLAGS netlink attribute is recorded in the Link structure,
the DHCPv6 code will know if the kernel or systemd-network fallback
code handles expiring prefixes.
The prefix expiration and IPv6 address updating fallback code is
resurrected from the parts deleted with commit
47d45d3cde45d6545367570264e4e3636bc9e345.
This patch can be removed once the minimum kernel requirements are
greater than or equal to 3.14.
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This patch add support to create vti6 tunnel
test:
vt6.network
[Match]
Name=wlan0
[Network]
Tunnel=ip6vti
vti6.netdev
[NetDev]
Name=ip6vti
Kind=vti6
[Tunnel]
Local=2a00:ffde:4567:edde::4987
Remote=2001:473:fece:cafe::5179
ip link
11: ip6_vti0@NONE: <NOARP> mtu 1500 qdisc noop state DOWN mode DEFAULT
group default
link/tunnel6 :: brd ::
12: ip6vti@wlan0: <POINTOPOINT,NOARP> mtu 1500 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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Replaces a lof ot strerror() usage with log_netdev_error_errno()
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This should simplify the prototype a bit. The bus parameter is redundant
in most cases, and in the few where it matters it can be derived from
the message via sd_bus_message_get_bus().
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This makes adds a couple of fixes:
- Introduces log_netdev_error_errno() and friends, which takes an error
number, and matches what log_link_error_errno() and friends do.
- Replaces a lof ot strerror() usage with log_netdev_error_errno(),
log_link_error_errno() and log_erro_errno()
- Uppercases the first character of many log messages, after all this is
supposed to be english language
- Drops manual negating of error codes before passing them to log
functions, the log functions all do that internally anyway.
Some other minor fixes.
Behaviour should not change really.
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Rename bond confs and man as well.
[tomegun: dropped a stray comma]
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