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2018-09-20global: put SPDX identifier on its own lineJason A. Donenfeld
The kernel has very specific rules correlating file type with comment type, and also SPDX identifiers can't be merged with other comments. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-09-04global: prefer sizeof(*pointer) when possibleJason A. Donenfeld
Suggested-by: Sultan Alsawaf <sultanxda@gmail.com> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-09-03global: satisfy check_patch.pl errorsJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-08-28global: run through clang-formatJason A. Donenfeld
This is the worst commit in the whole repo, making the code much less readable, but so it goes with upstream maintainers. We are now woefully wrapped at 80 columns. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-08-04send: switch handshake stamp to an atomicJason A. Donenfeld
Rather than abusing the handshake lock, we're much better off just using a boring atomic64 for this. It's simpler and performs better. Also, while we're at it, we set the handshake stamp both before and after the calculations, in case the calculations block for a really long time waiting for the RNG to initialize. Otherwise it's possible that when the RNG finally initializes, two handshakes are sent back to back, which isn't sensible. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-07-31device: adjust commentJason A. Donenfeld
Suggested-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-07-18device: destroy workqueue before freeing queueJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-07-04device: print daddr not saddr in missing peer errorJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-06-23global: use fast boottime instead of normal boottimeJason A. Donenfeld
Generally if we're inaccurate by a few nanoseconds, it doesn't matter. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-06-23global: use ktime boottime instead of jiffiesJason A. Donenfeld
Since this is a network protocol, expirations need to be accounted for, even across system suspend. On real systems, this isn't a problem, since we're clearing all keys before suspend. But on Android, where we don't do that, this is something of a problem. So, we switch to using boottime instead of jiffies. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-05-31device: do not assume dst is always validJason A. Donenfeld
The new flow offloading feature at the moment does not set the dst. We have a patch pending to fix this upstream, but in the meantime, work around it here. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-05-18device: remove allowedips before individual peersJason A. Donenfeld
This avoids an O(n^2) traversal in favor of an O(n) one. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-04-15send: account for route-based MTUJason A. Donenfeld
It might be that a particular route has a different MTU than the interface, via `ip route add ... dev wg0 mtu 1281`, for example. In this case, it's important that we don't accidently pad beyond the end of the MTU. We accomplish that in this patch by carrying forward the MTU from the dst if it exists. We also add a unit test for this issue. Reported-by: Roman Mamedov <rm.wg@romanrm.net> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-01-30device: let udev know what kind of device we areJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-01-03global: year bumpJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2017-12-09global: add SPDX tags to all filesGreg Kroah-Hartman
It's good to have SPDX identifiers in all files as the Linux kernel developers are working to add these identifiers to all files. Update all files with the correct SPDX license identifier based on the license text of the project or based on the license in the file itself. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Modified-by: Jason A. Donenfeld <Jason@zx2c4.com> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2017-11-29device: clear last handshake timer on ifdownJason A. Donenfeld
Otherwise new handshakes might not occur immediately when the interface goes up and down. Also initialize peers to having a proper zeroed handshake jiffies. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2017-11-28device: do not clear keys during sleep on AndroidJason A. Donenfeld
This makes sense for the security model of laptops, but not for clicking phones on and off, where we actually want to be able to handle incoming packets. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2017-11-17device: uninitialize socket first in destructionJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2017-11-17socket: only free socket after successful creation of newJason A. Donenfeld
When an interface is down, the socket port can change freely. A socket will be allocated when the interface comes up, and if a socket can't be allocated, the interface doesn't come up. However, a socket port can change while the interface is up. In this case, if a new socket with a new port cannot be allocated, it's important to keep the interface in a consistent state. The choices are either to bring down the interface or to preserve the old socket. This patch implements the latter. Reported-by: Marc-Antoine Perennou <keruspe@exherbo.org> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2017-11-10allowedips: rename from routingtableJason A. Donenfeld
Makes it more clear that this _not_ a routing table replacement. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2017-11-10device: wait for all peers to be freed before destroyingJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2017-11-03device: please lockdepJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2017-10-31device: expand scope of destruct lockJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2017-10-31device: only take reference if netns is differentJason A. Donenfeld
If we take two references, the namespace and the device are never freed in the usual manner. We should thus only take a reference to another namespace when it is a different namespace from our own. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2017-10-31global: style nitsJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2017-10-31global: infuriating kernel iterator styleJason A. Donenfeld
One types: for (i = 0 ... So one should also type: for_each_obj (obj ... But the upstream kernel style guidelines are insane, and so we must instead do: for_each_obj(obj ... Ugly, but one must choose his battles wisely. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2017-10-31peer: get rid of peer_for_each magicJason A. Donenfeld
Since the peer list is protected by the device_update_lock, and since items are removed from the peer list before putting their final reference, we don't actually need to take a reference when iterating. This allows us to simplify the macro considerably. Suggested-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2017-10-31global: accept decent check_patch.pl suggestionsJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2017-10-17device: no need to take lock for integer comparisonJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2017-10-17device: our use of queues means this check is worthlessJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2017-10-11compat: move version logic to compat.h and out of main .cJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2017-10-09routingtable: only use device's mutex, not a special rt oneJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2017-10-05queueing: use ptr_ring instead of linked listsJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2017-10-03global: add space around variable declarationsJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2017-10-02netlink: switch from ioctl to netlink for configurationJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2017-09-24timers: convert to use netif_runningJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2017-09-18queue: entirely rework parallel systemJason A. Donenfeld
This removes our dependency on padata and moves to a different mode of multiprocessing that is more efficient. This began as Samuel Holland's GSoC project and was gradually reworked/redesigned/rebased into this present commit, which is a combination of his initial contribution and my subsequent rewriting and redesigning. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2017-09-11device: IFF_NO_QUEUE is a private flag, not a public oneJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2017-08-04timers: rename confusingly named functions and variablesJason A. Donenfeld
Suggested-by: Mathias Hall-Andersen <mathias@hall-andersen.dk> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2017-07-20global: use pointer to net_deviceJason A. Donenfeld
DaveM prefers it to be this way per [1]. [1] http://www.spinics.net/lists/netdev/msg443992.html Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2017-07-20device: support 4.13's extact newlink paramJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2017-07-06device: cleanup register_netdev logicJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2017-07-06compat: priv_destructor got backportedJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2017-06-26global: cleanup IP header checkingJason A. Donenfeld
This way is more correct and ensures we're within the skb head. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2017-06-26device: remove icmp conntrack hacksJason A. Donenfeld
This logic belongs upstream. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2017-06-26device: avoid double icmp send on routing loopJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2017-06-26ratelimiter: rewrite from scratchJason A. Donenfeld
This not only removes the depenency on x_tables, but it also gives us much better performance and memory usage. Now, systems are able to have millions of WireGuard interfaces, without having to worry about a thundering herd of garbage collection. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2017-06-24device: only use one sleep notifierJason A. Donenfeld
This greatly improves performance when adding and removing interfaces, since the power registration function does a linear search each time. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2017-06-24device: netdevice destruction logic change for 4.12Jason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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