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For network devices on the same PCI function, dev_id should not be used,
since its purpose is for IPv6 support on interfaces with the same MAC
address.
The new dev_port sysfs attribute should be used instead of dev_id.
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This reverts commit 8741f2defaf26aafe5ee0fd29954cfdf84ee519c: 'Add virtio-blk support to path_id' and
commit e3d563346c4237af23335cc6904e0662efdf62ad: 'udev: net_id - handle virtio buses'.
Distros may want to take note of this, as it changes behavior.
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Use the bus-ID to create predicatable devices names for network interfaces
on Linux on System z instances. The bus-ID identifies a device in the s390
channel subsystem.
Network interfaces of device type Ethernet are named as:
enccw0.0.1234 (13 characters)
up to
enccwff.7.ffff (14 characters)
CTC network devices of device type SLIP, use a different prefix as follows:
slccw0.0.1234 (13 characters)
See also Red Hat Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=870859
[tomegun: typical problem of netdevs switching names between reboots.]
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This was already supported in path_id, so should be uncontroversial.
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Since numbers involved are all small, behaviour was correct already.
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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Onboard network controllers are not always on PCI domain 0.
[Kay: use int instead of long, add [P] to slot naming, remove sysname var]
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Before, we would initialize many fields twice: first
by filling the structure with zeros, and then a second
time with the real values. We can let the compiler do
the job for us, avoiding one copy.
A downside of this patch is that text gets slightly
bigger. This is because all zero() calls are effectively
inlined:
$ size build/.libs/systemd
text data bss dec hex filename
before 897737 107300 2560 1007597 f5fed build/.libs/systemd
after 897873 107300 2560 1007733 f6075 build/.libs/systemd
… actually less than 1‰.
A few asserts that the parameter is not null had to be removed. I
don't think this changes much, because first, it is quite unlikely
for the assert to fail, and second, an immediate SEGV is almost as
good as an assert.
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The android gadget driver for network tethering over rndis somehow has a
parent device with a null subsystem. Probably this is bug in android driver,
but it is easy enough to make systemd/udev behave gracefully and not
segfault. And this will help for making linux distros with systemd
(like fedora) work on android devices.
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Also split out some fileio functions to fileio.c and provide a SELinux
aware pendant in fileio-label.c
see https://bugzilla.redhat.com/show_bug.cgi?id=881577
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The individual address block is a poor man's organizationally unique
identifier.
Perhaps we should change the udev key from ID_OUI_FROM_DATABASE to
something like ID_IEEE_VENDOR_FROM_DATABASE?
Suggested-by: Diego Elio Pettenò <flameeyes@flameeyes.eu>
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