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path: root/src/network/networkd-link.h
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2016-10-21Revert "add networkd dbus lease info" (#4435)Zbigniew Jędrzejewski-Szmek
2016-10-11networkd: add dbus interface for lease raw options (#3528)Andrew Jeddeloh
Add a dbus object to represent dhcp leases and their raw options (i.e. options 224-254).
2016-10-07core: add "invocation ID" concept to service managerLennart Poettering
This adds a new invocation ID concept to the service manager. The invocation ID identifies each runtime cycle of a unit uniquely. A new randomized 128bit ID is generated each time a unit moves from and inactive to an activating or active state. The primary usecase for this concept is to connect the runtime data PID 1 maintains about a service with the offline data the journal stores about it. Previously we'd use the unit name plus start/stop times, which however is highly racy since the journal will generally process log data after the service already ended. The "invocation ID" kinda matches the "boot ID" concept of the Linux kernel, except that it applies to an individual unit instead of the whole system. The invocation ID is passed to the activated processes as environment variable. It is additionally stored as extended attribute on the cgroup of the unit. The latter is used by journald to automatically retrieve it for each log logged message and attach it to the log entry. The environment variable is very easily accessible, even for unprivileged services. OTOH the extended attribute is only accessible to privileged processes (this is because cgroupfs only supports the "trusted." xattr namespace, not "user."). The environment variable may be altered by services, the extended attribute may not be, hence is the better choice for the journal. Note that reading the invocation ID off the extended attribute from journald is racy, similar to the way reading the unit name for a logging process is. This patch adds APIs to read the invocation ID to sd-id128: sd_id128_get_invocation() may be used in a similar fashion to sd_id128_get_boot(). PID1's own logging is updated to always include the invocation ID when it logs information about a unit. A new bus call GetUnitByInvocationID() is added that allows retrieving a bus path to a unit by its invocation ID. The bus path is built using the invocation ID, thus providing a path for referring to a unit that is valid only for the current runtime cycleof it. Outlook for the future: should the kernel eventually allow passing of cgroup information along AF_UNIX/SOCK_DGRAM messages via a unique cgroup id, then we can alter the invocation ID to be generated as hash from that rather than entirely randomly. This way we can derive the invocation race-freely from the messages.
2016-08-23core,network: Use const qualifiers for block-local variables in macro ↵Felipe Sateler
functions (#4019) Prevents discard-qualifiers warnings when the passed variable was const
2016-06-09networkd-link: parse linkinfo to get kindTobias Jungel
2016-06-06network: beef up ipv6 RA support considerablyLennart Poettering
This reworks sd-ndisc and networkd substantially to support IPv6 RA much more comprehensively. Since the API is extended quite a bit networkd has been ported over too, and the patch is not as straight-forward as one could wish. The rework includes: - Support for DNSSL, RDNSS and RA routing options in sd-ndisc and networkd. Two new configuration options have been added to networkd to make this configurable. - sd-ndisc now exposes an sd_ndisc_router object that encapsulates a full RA message, and has direct, friendly acessor functions for the singleton RA properties, as well as an iterative interface to iterate through known and unsupported options. The router object may either be retrieved from the wire, or generated from raw data. In many ways the sd-ndisc API now matches the sd-lldp API, except that no implicit database of seen data is kept. (Note that sd-ndisc actually had a half-written, but unused implementaiton of such a store, which is removed now.) - sd-ndisc will now collect the reception timestamps of RA, which is useful to make sd_ndisc_router fully descriptive of what it covers. Fixes: #1079
2016-06-01networkd-dhcp6: generalize DHCPv6 client (re)startingTom Yan
dhcp6_request_address() was merely a function to switch the DHCPv6 client from "stateless" mode to "stateful" mode. It was also a one-way switch. Also, to (re)start the client, we would need to repeat separate function calls. In this patch, dhcp6_request_address() is made a general starter/manager of the DHCPv6 client. It now takes an extra parameter so we will be specifying which mode the DHCPv6 client should be started in. Also it will keep track of the current mode and compare with the newly requested mode, and only restart the client in case there is a difference between them. This also makes sure that the DHCPv6 client will be (re)started accordingly as per the Router Advertisement flags.
2016-05-09networkd: reworkd LLDP emission to allow control of propagation levelLennart Poettering
This allows selecting the propagation level of emitted LLDP packets (specifically: the destination MAC address of the packets). This is useful because it allows generating LLDP packets that optionally cross certain types of bridges. See 802.11ab-2009, Table 7-1 for details.
2016-04-29networkd: rework headers to avoid circular includesZbigniew Jędrzejewski-Szmek
Header files were organized in a way where the includer would add various typedefs used by the includee before including it, resulting in a tangled web of dependencies between files. Replace this with the following logic: networkd.h / \ networkd-link.h \ networkd-ipv4ll.h--\__\ networkd-fdb.h \ networkd-network.h netword-netdev-*.h networkd-route.h \ networkd-netdev.h If a pointer to a structure defined in a different header file is needed, use a typedef line instead of including the whole header.
2016-02-21networkd: add basic LLDP transmission supportLennart Poettering
Let's add some minimalistic LLDP sender support. The idea is that this is either on or off, and all fields determined automatically rather than configured explicitly.
2016-02-21networkd: make a couple of functions staticLennart Poettering
These functions are nowadays used only within networkd-link.c, hence ther's no point in littering our public namespace with them.
2016-02-20networkd: enable LLDP only on ethernetLennart Poettering
2016-02-10tree-wide: remove Emacs lines from all filesDaniel Mack
This should be handled fine now by .dir-locals.el, so need to carry that stuff in every file.
2015-11-18tree-wide: sort includes in *.hThomas Hindoe Paaboel Andersen
This is a continuation of the previous include sort patch, which only sorted for .c files.
2015-11-17sd-dhcp6-client: bind to link-local addressTom Gundersen
This ensures that several DHCPv6 clients can run on separate interfaces simultaneously.
2015-11-11networkd: link - track state of IPv6LL addressTom Gundersen
This is managed by the kernel, but we should track whether or not we have a configured IPv6LL address. This fixes two issues: - we now wait for IPv6LL before considering the link ready - we now wait for IPv6LL before attempting to do NDisc or DHCPv6 these protocols relies on an LL address being available.
2015-11-11networkd: ndisc - handle router advertisement in userspaceTom Gundersen
Router Discovery is a core part of IPv6, which by default is handled by the kernel. However, the kernel implementation is meant as a fall-back, and to fully support the protocol a userspace implementation is desired. The protocol essentially listens for Router Advertisement packets from routers on the local link and use these to configure the client automatically. The four main pieces of information are: what kind (if any) of DHCPv6 configuration should be performed; a default gateway; the prefixes that should be considered to be on the local link; and the prefixes with which we can preform SLAAC in order to pick a global IPv6 address. A lot of additional information is also available, which we do not yet fully support, but which will eventually allow us to avoid the need for DHCPv6 in the common case. Short-term, the reason for wanting this is in userspace was the desire to fully track all the addresses on links we manage, and that is not possible for addresses managed by the kernel (as the kernel does not expose to us the fact that it manages these addresses). Moreover, we would like to support stable privacy addresses, which will soon be mandated and the legacy MAC-based global addresses deprecated, to do this well we need to handle the generation in userspace. Lastly, more long-term we wish to support more RA options than what the kernel exposes.
2015-11-11networkd: IPv6 router discovery - follow IPv6AcceptRouterAdvertisemnt=Tom Gundersen
The previous behavior: When DHCPv6 was enabled, router discover was performed first, and then DHCPv6 was enabled only if the relevant flags were passed in the Router Advertisement message. Moreover, router discovery was performed even if AcceptRouterAdvertisements=false, moreover, even if router advertisements were accepted (by the kernel) the flags indicating that DHCPv6 should be performed were ignored. New behavior: If RouterAdvertisements are accepted, and either no routers are found, or an advertisement is received indicating DHCPv6 should be performed, the DHCPv6 client is started. Moreover, the DHCP option now truly enables the DHCPv6 client regardless of router discovery (though it will probably not be very useful to get a lease withotu any routes, this seems the more consistent approach). The recommended default setting should be to set DHCP=ipv4 and to leave IPv6AcceptRouterAdvertisements unset.
2015-11-11networkd: dhcp6 - split up configure() methodTom Gundersen
Enabling address acquisition, configuring the client and starting the client are now split out. This to better handle the client being repeatedly enabled due to router advertisements.
2015-10-30networkd: route - track routesTom Gundersen
2015-10-24util-lib: split our string related calls from util.[ch] into its own file ↵Lennart Poettering
string-util.[ch] There are more than enough calls doing string manipulations to deserve its own files, hence do something about it. This patch also sorts the #include blocks of all files that needed to be updated, according to the sorting suggestions from CODING_STYLE. Since pretty much every file needs our string manipulation functions this effectively means that most files have sorted #include blocks now. Also touches a few unrelated include files.
2015-10-22networkd: dhcp6 - do not handle prefix expirationTom Gundersen
This ressurects 47d45d3cde45d6545367570264e4e3636bc9e345. We now always use /128 prefixes, so there is no need for the DHCPv6 code to know about prefixes expiring.
2015-10-22networkd: ndisc - split out from dhcp6 codeTom Gundersen
2015-10-22networkd: rename icmp6 to ndiscTom Gundersen
2015-10-22sd-ndisc: rename API from sd-icmp6-ndTom Gundersen
2015-10-22sd-icmp6-nd: rename files to sd-ndiscTom Gundersen
The actual code rename will follow. The reason for the change of name is to make it simpler and more uniform with how we name other libraries (we don't include the underlying protocol). The new name also matches the naming in the kernel (which is particularly relevent here as we expect to let the kernel do some parts of the protocol and we do others).
2015-10-21networkd: manager/link - only serialize once per event-loop iterationTom Gundersen
Every time the state is written out we may trigger third-party apps, so let's be a bit more careful about writing this out unnecessarily.
2015-10-21networkd: address - distinguish between addresses added by us and by othersTom Gundersen
We only keep the addresses that we added ourselves in link->addresses, and introduce a new set link->addresses_foreign to keep addresses of unknown origin. Only functional change is that "foreign" addresses no longer prevent a link from entering "configured" state.
2015-10-21networkd: link - only consider configured when all addresses are readyTom Gundersen
We were considering a link configured whilst its IPv6 addresses were still tentative. Fixes issue #650.
2015-10-11networkd: make address_{establish,release}() staticTom Gundersen
No need to expose these functions, but rather call them from address_{add,drop}.
2015-10-11networkd: address - store active addresses in a Set rather than a ListTom Gundersen
We need to be able to look these things up quickly as we will be updating them continuously and there can in principle be many of them.
2015-10-11networkd: address - process in manager.c rather than link.cTom Gundersen
2015-09-23networkd: Wait for DHCPv6 before announcing link configuredPatrik Flykt
Wait until DHCPv6 has acquired an address before announcing the link to be configured. Log the DHCPv6 lease lost event.
2015-08-27networkd: split up networkd.h into per-object header filesLennart Poettering
No functional changes, just moving definitions into separate header files.
2015-08-27networkd: optionally push dhcp timezone into timedatedLennart Poettering
2015-06-13sd-netlink: rename from sd-rtnlTom Gundersen
2015-05-11core,network: major per-object logging reworkLennart Poettering
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
2015-05-04network: Implement fallback DHCPv6 prefix handling for older kernelsPatrik Flykt
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.
2015-02-27networkd: add support for Uplink Failure DetectionAlin Rauta
Introduce BindCarrier= to indicate the set of links that determine if the current link should be brought UP or DOWN. [tomegun: add a bit to commit message]
2015-02-11networkd DHCPv4 logging endian fixPaul Martin
On Tue, Feb 10, 2015 at 08:10:43PM +0100, Lennart Poettering wrote: > Hmm, I think it would be nicer to use be32toh() here instead, since it > ensures the macro is (to a limited degree) typesafe. > > Any chance you could rework that? From: Paul Martin <paul.martin@codethink.co.uk> Date: Wed, 11 Feb 2015 11:47:16 +0000 Subject: [PATCH] networkd dhcpv4 logging endian fix On a big-endian host, systemd-networkd prints out IPv4 network addresses byte reversed: Feb 10 16:43:32 hostname systemd-networkd[151]: eth0 : DHCPv4 address 158.1.24.10/16 via 1.1.24.10 The address obtained is 10.24.1.158/16 and the route is 10.24.0.0/16 dev eth0 src 10.24.1.187 The macro ADDRESS_FMT_VAL() unpacks a "struct in_addr" in a little-endian specific manner. This patch forces the passed address into host order, then unpacks it. On an x86 later than i486, compiled with -O2, the only extra overhead is a single bswap instruction.
2015-02-09networkd: generalize IPv4LL to LinkLocalTom Gundersen
This allows both IPv4 and IPv6 link-local addresses to be enabled or disabled. By default we still enable IPv6LL and disable IPv4LL. The old config option is kept for backwards compatibility, but removed from the documentation.
2015-02-05networkd: exit on idleTom Gundersen
We will be woken up on rtnl or dbus activity, so let's just quit if some time has passed and that is the only thing that can happen. Note that we will always stay around if we expect network activity (e.g. DHCP is enabled), as we are not restarted on that.
2015-02-05networkd: add basic dbus APITom Gundersen
Only the very basics, more to come. For now: $ busctl tree org.freedesktop.network1 └─/org/freedesktop/network1 └─/org/freedesktop/network1/link ├─/org/freedesktop/network1/link/1 ├─/org/freedesktop/network1/link/2 ├─/org/freedesktop/network1/link/3 ├─/org/freedesktop/network1/link/4 ├─/org/freedesktop/network1/link/5 ├─/org/freedesktop/network1/link/6 ├─/org/freedesktop/network1/link/7 ├─/org/freedesktop/network1/link/8 └─/org/freedesktop/network1/link/9 $ busctl introspect org.freedesktop.network1 /org/freedesktop/network1 NAME TYPE SIGNATURE RESULT/VALUE FLAGS org.freedesktop.network1.Manager interface - - - .OperationalState property s "carrier" emits-change $ busctl introspect org.freedesktop.network1 /org/freedesktop/network1/link/1 NAME TYPE SIGNATURE RESULT/VALUE FLAGS org.freedesktop.network1.Link interface - - - .AdministrativeState property s "unmanaged" emits-change .OperationalState property s "carrier" emits-change
2015-02-03networkd: handle suspend eventsTom Gundersen
2014-12-19LLDP: Add support for networkctlSusant Sahani
2014-12-19networkd: integrate LLDPSusant Sahani
This patch integrates LLDP with networkd. Example conf: file : lldp.network [Match] Name=em1 [Network] LLDP=yes
2014-12-10networkd-dhcp6: Move ICMPv6 and DHCPv6 configuration to new filePatrik Flykt
Handle all aspects of ICMPv6 and DHCPv6 in a file of its own as is done with DHCPv4 and IPv4LL.
2014-12-08networkd: manager - enumerate addresses globally, rather than per-linkTom Gundersen
The kernel always returns all addresses, rather than only for the given link, so let's only enumerate once.
2014-11-28networkd: update logging macros for parameter order, and errno, to match ↵Lennart Poettering
rest of the code
2014-11-27log: rearrange log function namingLennart Poettering
- Rename log_meta() → log_internal(), to follow naming scheme of most other log functions that are usually invoked through macros, but never directly. - Rename log_info_object() to log_object_info(), simply because the object should be before any other parameters, to follow OO-style programming style.