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2014-05-19sd-dhcp-lease/sd-network: modernization and fix leakTom Gundersen
2014-05-19sd-dhcp-lease: move in_addr (de)serialization to shared network codeTom Gundersen
2014-05-12networkd: manager - don't leak kmod contextTom Gundersen
Also, keep the kmod_new internal to networkd-manager.c
2014-05-12networkd: introduce ipip tunnelSusant Sahani
This patch enables basic ipip tunnel support. It works with kernel module ipip example conf: file: ipip.netdev [NetDev] Name=ipip-tun Kind=ipip MTUBytes=1480 [Tunnel] Local=192.168.223.238 Remote=192.169.224.239 TTL=64 file: ipip.network [Match] Name=em1 [Network] Tunnel=ipip-tun [tomegun: - drop unused variable - take ref when enslaving]
2014-05-09sd-dhcp-client: improve logging when stopping clientTom Gundersen
'Requested by user' was confusing, just drop it.
2014-05-07sd-network: expose both admin and operational state directlyTom Gundersen
Also add a call to check if a link is loopback, as this should commonly be ignored.
2014-05-06sd-dhcp-client: use asynchronous_close()Tom Gundersen
close() is a blocking call, which may slow things down measurably when running many dhcp clients in the same single-threaded main loop. Let's just use the asynchronous version instead to avoid the problem.
2014-05-06sd-dhcp: network - don't leak sockets on failureTom Gundersen
Also some general cleanups
2014-05-06sd-dhcp: network - set TOS on outgoing packetsTom Gundersen
This should improve performance on busy wireless networks and the like. Inspired by a similar change in dnsmasq.
2014-05-06dhcp-network: don't pass ifindex to bind_udp_socketTom Gundersen
UDP sockets can anyway not be bound to specific netdev's. The packages would have to be filtered when received instead.
2014-04-30networkd: dont configure route if lease doesn't have oneUmut Tezduyar Lindskog
2014-04-29sd-dhcp-lease: fix double reallocTom Gundersen
2014-04-29sd-dhcp-lease: (de)serialize DNS and NTP serversTom Gundersen
Also use inet_ntoa rather than inet_ntop.
2014-04-29sd-dhcp-leaes: use newdup()Tom Gundersen
2014-04-29sd-dhcp-lease: add NTP supportTom Gundersen
Export the NTP servers so timesyncd can use them.
2014-04-27sd-dhcp-client: log positive error numberUmut Tezduyar Lindskog
Log error no for such client_stop(client, DHCP_EVENT_STOP)
2014-04-27libnetworkd: add link local testsUmut Tezduyar Lindskog
- Also only allow positive ifindex on both dhcp and ipv4ll [tomegun: the kernel always sets a positive ifindex, but some APIs accept ifindex=0 with various meanings, so we should protect against accidentally passing ifindex=0 along.]
2014-04-24networkd-wait-online: improve interoptability and enable by defaultTom Gundersen
To make sure we don't delay boot on systems where (some) network links are managed by someone else we don't block if something else has successfully brought up a link. We will still block until all links we are aware of that are managed by networkd have been configured, but if no such links exist, and someone else have configured a link sufficiently that it has a carrier, it may be that the link is ready so we should no longer block. Note that in all likelyhood the link is not ready (no addresses/routes configured), so whatever network managment daemon configured it should provide a similar wait-online service to block network-online.target until it is ready. The aim is to block as long as we know networking is not fully configured, but no longer. This will allow systemd-networkd-wait-online.service to be enabled on any system, even if we don't know whether networkd is the main/only network manager. Even in the case networking is fully configured by networkd, the default behavior may not be sufficient: if two links need to be configured, but the first is fully configured before the second one appears we will assume the network is up. To work around that, we allow specifying specific devices to wait for before considering the network up. This unit is enabled by default, just like systemd-networkd, but will only be pulled in if anyone pulls in network-online.target.
2014-04-20sd-dhcp-client: log ifindex and mac address when startingTom Gundersen
2014-04-19networkd: tie links to rtnl rather than udevTom Gundersen
This essentially swaps the roles of rtnl and udev in networkd. After this change libudev is only used for waiting for udev to initialize devices and to get udev-specific information needed for some [Match] attributes. This in particular simplifies the code in containers where udev is not really useful, but also simplifies things and reduces round-trips in the non-container case.
2014-04-12test-dhcp-client: unref lease objects to make valgrind happyZbigniew Jędrzejewski-Szmek
Also unref client objects in test code, and initalize logging, to DEBUG by default.
2014-04-12sd-dhcp-client: drop logging about T1/T2Tom Gundersen
These are redundant now that the REQUEST messages contain the same information.
2014-04-12sd-dhcp-client: improve loggingTom Gundersen
Specify what kind of REQUEST we send, and distinguish between REBOOT and START. Also log stop reasons as strings rather than numbers.
2014-04-12sd-dhcp-client: use client_initialiez and client_restart for REBOOTTom Gundersen
2014-04-11sd-dhcp-client: document message creation a bit moreTom Gundersen
Also reshuffle some code to make the correspondence with the RFC a bit more obvious. Small functional change: fail if we try to send a message from the wrong state.
2014-04-11sd-dhcp-client: assert that we can only create DISCOVER or REQUEST messagesTom Gundersen
2014-04-11sd-dhcp-client: rebind raw socket when resetting transaction idTom Gundersen
As we are now filtering the raw socket based on the transaction id, we must reset the BPF when we reset the transaction id.
2014-04-11sd-ipv4ll: Add an explicit stop state for IPv4LLPatrik Flykt
Add an explicit stop state for IPv4LL so that the user can stop the IPv4LL client from the callback. When returning from the callback, check also the stop state in order to halt any further protocol processing.
2014-04-11sd-ipv4ll: Add reference counting for IPv4LLPatrik Flykt
Similar to DHCP, the IPv4LL library user can decide to free the LL client any time the callback is called. Guard against freeing the LL client in the callback by introducing proper reference counting. Also update code using the IPv4LL library to properly handle a returned NULL from the notify and stop functions if the IPv4LL client was freed.
2014-04-11sd-dhcp-client: Add an explicit stop state for the DHCP clientPatrik Flykt
Add an explicit stop state for the DHCP client so that the library user can issue a stop at any time the callback has been called. When returning from the callback, check also the stop state and stop any further DHCP processing.
2014-04-11sd-dhcp-client: Add reference counting for DHCPPatrik Flykt
The DHCP library user can decide to free the DHCP client any time the callback is called. After the callback has been called, other computations may still be needed - the best example being a full restart of the DHCP procedure in case of lease expiry. Fix this by introducing proper reference counting. Properly handle a returned NULL from the notify and stop functions if the DHCP client was freed.
2014-04-11sd-dhcp-client: recevie_message - verify cmsg_len before readingTom Gundersen
2014-04-10sd-dhcp-client: test - fix for jenkinsTom Gundersen
This test should have been updated when changing the magic cookie handling around. Reported by Ken MacLeod.
2014-04-08sd-dhcp-client: include client id in debug messagesTom Gundersen
2014-04-07test-dhcp-client: style fixesZbigniew Jędrzejewski-Szmek
2014-04-07libsystemd-network: Speed up checksum computation using 64 bit integersTom Gundersen
Improve the checksum computation by using 64 bit integers instead of the 16 bit integers in the existing implementation. This change speeds up the computation with approximately 78% both on 64 bit and 32 bit systems. Please see RFC 1071 for details.
2014-04-07ipv4ll: use BPF on raw socketTom Gundersen
This should significantly reduce spurious wakeups.
2014-04-07sd-ipv4ll: fix packet broadcastingTom Gundersen
Umut said: 'I have noticed a bug that we are sending PROBE/ANNOUNCE messages on 00:00:00:00:00:00 address where it should be broadcast.'
2014-04-06sd-dhcp-client: improve BPFTom Gundersen
Try a bit harder to make the kernel drop packets not for us. This should reduce the number of wakeups from n^2 to n in the number of dhcp clients, which admittedly only makes a differenc in very extreme cases.
2014-04-06sd-dhcp-client: eagerly drop too small packetsTom Gundersen
If they are too small to fit the IP+UDP+DHCP headers they can be of no use, so don't waste resources parsing them. This is at the cost of losing some verbosity in the logging.
2014-04-06sd-dhcp-client: move magic cookie into DHCPMessage structTom Gundersen
Also move the checking of it to the main message handler, rather than the options parser. Fix a bug, so we now drop the packet if any of the magic bytes don't match. Before we used to only drop the packet if they were all wrong.
2014-04-03networkd: smooth transition from ipv4ll to dhcp addressUmut Tezduyar Lindskog
Currently when both ipv4ll and dhcp are enabled, ipv4ll address (if one has been claimed) is removed when dhcp address is aquired. This is not the best thing to do since there might be clients unaware of the removal trying to communicate. This patch provides a smooth transition between ipv4ll and dhcp. If ipv4ll address was claimed [1] before dhcp, address is marked as deprecated. Deprecated address is still a valid address and packets can be received on it but address cannot be selected as a source address. If dhcp lease cannot be extended, then ipv4ll address is marked as valid again. [1] If there is no collision, claiming IPv4LL takes between 4 to 7 seconds.
2014-04-02sd-dhcp-client: use BPF on raw socketTom Gundersen
Filter out everything except UDP packets destined for the DHCP client port, this should avoid the vast majority of spurious wakeups. Filter based on [0], with permission. Possible improvemnts: also check for the DHCP magic cookie to drop invalid packets. Check for our xid to filter out packets destined for other clients. [0]: <https://github.com/ambrop72/badvpn/blob/master/dhcpclient/BDHCPClient.c#L57>
2014-04-01sd-ipv4ll: speed up bind() in the same way as for dhcpTom Gundersen
2014-04-01sd-dhcp-client: --omg-optimizedTom Gundersen
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>
2014-03-30sd-dhcp: avoid checksum calculation if possibleTom Gundersen
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.
2014-03-30sd-dhcp: check for ipv4 packetsTom Gundersen
2014-03-30sd-dhcp: check for udp packetsUmut Tezduyar Lindskog
Do not try to parse ICMP packets [tomegun: slightly tweaked debug message]
2014-03-27silence warningsThomas Hindoe Paaboel Andersen
2014-03-24sd-event: rework API to support CLOCK_REALTIME_ALARM and ↵Lennart Poettering
CLOCK_BOOTTIME_ALARM, too
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