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Passing the protocol to socket() is redundant as it will be specified again in
bind(). Dropping the redundancy reduces the cost of bind() from ~30ms to ~0ms.
For details see [0].
networkd in a container (i.e., with next to no network latency) can now
negotiate a DHCP lease in 0.7 - 5 ms.
Thanks to Kay for help with debugging and to Daniel Borkmann for the pointer
to fix the problem.
[0]: <https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=902fefb82ef72a50c78cb4a20cc954b037a98d1c>
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This makes updating link status on netdev links work again.
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Free networks before links (the reverse of creation order).
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Also fix type parameter passed to new0
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When receiving lots of packets that are not meant for us, we waste a relatively large amount
of cpu time computing their checksums before discarding them. Move the checksum calculation last
so we never compute it for packets which would otherwise be discarded.
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Do not try to parse ICMP packets
[tomegun: slightly tweaked debug message]
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Reported by Thomas Hindoe Paaboel Andersen <phomes@gmail.com>
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We will easily get these when running on newer kernels. However, we can safely ignore them as we
anyway don't know what to do with them.
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Use a static table with all the typing information, rather than repeated
switch statements. This should make it a lot simpler to add new types.
We need to keep all the type info to be able to create containers
without exposing their implementation details to the users of the library.
As a freebee we verify the types of appended/read attributes.
The API is extended to nicely deal with unions of container types.
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The object is not currently used, so just drop the refenence. If/when we end up
using the object in the future, we must make sure to deal with possible mutual
references between rtnl busses and their queued messages; as is done in sd-bus.
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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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Before:
$ systemd-analyze --user
Startup finished in 2.810s (firmware) + 48ms (loader) + 122ms (userspace) = 122ms
After:
$ systemd-analyze --user
Startup finished in 122ms (userspace) = 122ms
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Added support for tunneling netlink attrributes (ipip, gre, sit).
These works with kernel module ipip, gre and sit . The test cases are
moved to a separate file and manual test as well because they require
respective kernel modules as well.
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Currently we only support containers in RTM_*LINK messages.
Reported-by: "Thomas H.P. Andersen <phomes@gmail.com>"
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Based on a similar patch by Lukáš Nykrýn.
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Based on a similar patch from David Härdeman.
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That way, we don't forget to initialize it when the watchdog is
initialized before all event sources.
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Firstly, remove stray assert(). Also be a bit stricter when verifying the
received info. If we get an applicable newlink message that we can't make
sense of, we will now enter NETDEV_FAILED, as we cannot reasonably continue
without knowing the ifindex of our device.
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These tests were both broken and redundant, so let's drop them.
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For compatibility with C++
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tcpwrap is legacy code, that is barely maintained upstream. It's APIs
are awful, and the feature set it exposes (such as DNS and IDENT
access control) questionnable. We should not support this natively in
systemd.
Hence, let's remove the code. If people want to continue making use of
this, they can do so by plugging in "tcpd" for the processes they start.
With that scheme things are as well or badly supported as they were from
traditional inetd, hence no functionality is really lost.
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Given that native services do not carry a sysv priority anyway it is
pointless reading them from chkconfig headers, and pretend they'd work.
So let's drop this.
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We match 'newlink' messages with expected netdev's based on their names. Now also
make sure that the receieved link has the expected kind.
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Extend rta_offset_tb into a stack of offset tables, one for each parent of the
current container, and make sd_rtnl_message_{enter,exit}_container() pop/push
to this stack.
Also make sd_rtnl_message_rewind() parse the top-level container, and use this
when reading a message from the socket.
This changes the API by dropping the now redundant sd_rtnl_message_read()
method.
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The bug was introducted in a3d59cd1 ("sd-bus: don't use assert_return()
to check for disconnected bus connections")
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