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for sizes
According to Wikipedia it is customary to specify hardware metrics and
transfer speeds to the basis 1000 (SI decimal), while software metrics
and physical volatile memory (RAM) sizes to the basis 1024 (IEC binary).
So far we specified everything in IEC, let's fix that and be more
true to what's otherwise customary. Since we don't want to parse "Mi"
instead of "M" we document each time what the context used is.
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This also changes the names to MTUBytes and BitsPerSecond, respectively. Notice
that the speed was mistakenly documented to be in bytes before this change.
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Also fix a copy-paste error that broke matching on interface name.
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Just two minor style fixes...
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This is the same as shown by 'ethtool -i <ifname>', and is sometimes
set even though DRIVER is not.
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first (or second)
Previously the returned object of constructor functions where sometimes
returned as last, sometimes as first and sometimes as second parameter.
Let's clean this up a bit. Here are the new rules:
1. The object the new object is derived from is put first, if there is any
2. The object we are creating will be returned in the next arguments
3. This is followed by any additional arguments
Rationale:
For functions that operate on an object we always put that object first.
Constructors should probably not be too different in this regard. Also,
if the additional parameters might want to use varargs which suggests to
put them last.
Note that this new scheme only applies to constructor functions, not to
all other functions. We do give a lot of freedom for those.
Note that this commit only changes the order of the new functions we
added, for old ones we accept the wrong order and leave it like that.
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It should match on the driver of the parent device.
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including it in the log strings
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SipHash appears to be the new gold standard for hashing smaller strings
for hashtables these days, so let's make use of it.
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https://bugzilla.redhat.com/show_bug.cgi?id=1043304
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- Add space between if/for and the opening parentheses
- Place the opening brace on same line as the function (not for udev)
From the CODING_STYLE
Try to use this:
void foo() {
}
instead of this:
void foo()
{
}
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This reverts commit da66338e17f4df04d9d7cc22ec971b416d57761e.
It is superseeded by 70f75a523b16ad495a7791d595ee3eececf75953
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Pass on the line on which a section was decleared to the parsers, so they
can distinguish between multiple sections (if they chose to). Currently
no parsers take advantage of this, but a follow-up patch will do that
to distinguish
[Address]
Address=192.168.0.1/24
Label=one
[Address]
Address=192.168.0.2/24
Label=two
from
[Address]
Address=192.168.0.1/24
Label=one
Address=192.168.0.2/24
Label=two
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Use Description only internally, and allow Alias to be set
as a separate option. For instance SNMP uses ifalias for
a specific purpose, so let's not write to it by default.
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This prevents enable_name_policy() from invariably returning false when
it matches a zero length string at the end of /proc/cmdline.
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In case when update of current values is not necessary we still might end up
calling ioctl(), because need_update variable is not explicitly initialized.
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Instead of individually checking for containers in each user do this
once in a new call proc_cmdline() that read the file only if we are not
in a container.
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Should fix linking with old toolchain.
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Move this to src/share/net-util.c, so it can be used elsewhere.
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Also reinstate print to kmsg when renaming netif.
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We want to load the config in _init, but not connect to the sockets before we are forked.
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We set it to 10 secs (as we are only communicating with the kernel,
it seems we should be able to bail out sooner than sd-bus, which
uses 25).
When passing timout 0, the default is used, use this in link-config.
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Not sure if -ENOENT is the correct return value for when no persistent network
name is set, but couldn't think of anything better.
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There is no point in keeping one timestamp for each directory, as we only
ever care about the most recent one.
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This is private configuraiton, so let's not pollute the namespace (and hence make Debian happy :) ).
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This introduces a new key MACAddressPolicy.
The possible policies are 'persistent' and 'random'.
'persistent' will do nothing if the current address is the hardware address,
but if the hardware does not have an address (or another address is set for
whatever reason), we will generate an address which will be random, but
persistent between boots (based on machineid and persistent netif name).
'random' will do nothing if the kernel already set a random address, otherwise
it will generate a random one and use that instead.
This patch sets MACAddressPolicy=persistent in the default .link file.
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This introduces a new key NamePolicy, which takes an ordered list of naming
policies. The first successful one is applide. If all fail the value of Name
(if any) is used.
The possible policies are 'onboard', 'slot', 'path' and 'mac'.
This patch introduces a default link file, which replaces the equivalent udev
rule.
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This adds support for setting the mac address, name and mtu.
Example:
[Link]
MTU=1450
MACAddress=98:76:54:32:10:ab
Name=wireless0
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This adds support for setting the link speed, duplex and WakeOnLan
settings.
Example:
[Link]
SpeedMBytes=100
Duplex=half
WakeOnLan=magic
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This tool applies hardware specific settings to network devices before they
are announced via libudev.
Settings that will probably eventually be supported are MTU, Speed,
DuplexMode, WakeOnLan, MACAddress, MACAddressPolicy (e.g., 'hardware',
'synthetic' or 'random'), Name and NamePolicy (replacing our current
interface naming logic). This patch only introduces support for
Description, as a proof of concept.
Some of these settings may later be overriden by a network management
daemon/script. However, these tools should always listen and wait on libudev
before touching a device (listening on netlink is not enough). This is no
different from how things used to be, as we always supported changing the
network interface name from udev rules, which does not work if someone
has already started using it.
The tool is configured by .link files in /etc/net/links/ (with the usual
overriding logic in /run and /lib). The first (in lexicographical order)
matching .link file is applied to a given device, and all others are ignored.
The .link files contain a [Match] section with (currently) the keys
MACAddress, Driver, Type (see DEVTYPE in udevadm info) and Path (this
matches on the stable device path as exposed as ID_PATH, and not the
unstable DEVPATH). A .link file matches a given device if all of the
specified keys do. Currently the keys are treated as plain strings,
but some limited globbing may later be added to the keys where it
makes sense.
Example:
/etc/net/links/50-wireless.link
[Match]
MACAddress=98:f2:e4:42:c6:92
Path=pci-0000:02:00.0-bcma-0
Type=wlan
[Link]
Description=The wireless link
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