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2022-08-17wireguard: fix fib entry trackingAlexander Chernavin1-0/+83
Type: fix After peers roaming support addition, FIB entry tracking stopped working. For example, it can be observed when an adjacency is stacked on a FIB entry by the plugin and the FIB entry hasn't got ARP resolution yet. Once the FIB entry gets ARP resolution, the adjacency is not re-stacked as it used to. This results in endless ARP requests when a traffic is sent via the adjacency. This is broken because the plugin stopped using "midchain delegate" with peers roaming support addition. The reason is that "midchain delegate" didn't support stacking on a different FIB entry which is needed when peer's endpoint changes. Now it is supported there (added in 36892). With this fix, start using "midchane delegate" again and thus, fix FIB entry tracking. Also, cover this in tests. Signed-off-by: Alexander Chernavin <achernavin@netgate.com> Change-Id: Iea91f38739ab129e601fd6567b52565dbd649371
2022-08-09wireguard: add peers roaming supportAlexander Chernavin1-19/+247
Type: feature With this change, peers are able to roam between different external endpoints. Successfully authenticated handshake or data packet that is received from a new endpoint will cause the peer's endpoint to be updated accordingly. Signed-off-by: Alexander Chernavin <achernavin@netgate.com> Change-Id: Ib4eb7dfa3403f3fb9e8bbe19ba6237c4960c764c
2022-08-09wireguard: add handshake rate limiting supportAlexander Chernavin1-0/+168
Type: feature With this change, if being under load a handshake message with both valid mac1 and mac2 is received, the peer will be rate limited. Cover this with tests. Signed-off-by: Alexander Chernavin <achernavin@netgate.com> Change-Id: Id8d58bb293a7975c3d922c48b4948fd25e20af4b
2022-08-08wireguard: add dos mitigation supportAlexander Chernavin1-4/+187
Type: feature With this change: - if the number of received handshake messages exceeds the limit calculated based on the peers number, under load state will activate; - if being under load a handshake message with a valid mac1 is received, but mac2 is invalid, a cookie reply will be sent. Also, cover these with tests. Signed-off-by: Alexander Chernavin <achernavin@netgate.com> Change-Id: I3003570a9cf807cfb0b5145b89a085455c30e717
2022-08-03wireguard: add processing of received cookie messagesAlexander Chernavin1-5/+166
Type: feature Currently, if a handshake message is sent and a cookie message is received in reply, the cookie message will be ignored. Thus, further handshake messages will not have valid mac2 and handshake will not be able to be completed. With this change, process received cookie messages to be able to calculate mac2 for further handshake messages sent. Cover this with tests. Signed-off-by: Alexander Chernavin <achernavin@netgate.com> Change-Id: I6d51459778b7145be7077badec479b2aa85960b9
2022-06-05wireguard: fix crash by not sending arp via wg interfaceAlexander Chernavin1-8/+54
Type: fix Currently, neighbor adjacencies on a wg interface are converted into a midchain only if one of the peers has a matching allowed prefix configured. If create a route that goes through a wg interface but the next-hop address does not match any allowed prefixes, an ARP/ND request will try to be sent via the wg interface to resolve the next-hop address when matching traffic occurs. And sending an ARP request will cause VPP to crash while copying hardware address of the wg interface which is NULL. Sending an ND message will not cause VPP to crash but the error logged will be unclear (no source address). With this fix, convert all neighbor adjacencies on a wg interface into a midchain and update tests to cover the case. If there is no matching allowed prefix configured, traffic going such routes will be dropped because of "Peer error". No changes if there is matching allowed prefix configured. Also, fix getting peer by adjacency index. Signed-off-by: Alexander Chernavin <achernavin@netgate.com> Change-Id: I15bc1e1f83de719e97edf3f7210a5359a35bddbd
2022-05-10tests: replace pycodestyle with blackKlement Sekera1-505/+650
Drop pycodestyle for code style checking in favor of black. Black is much faster, stable PEP8 compliant code style checker offering also automatic formatting. It aims to be very stable and produce smallest diffs. It's used by many small and big projects. Running checkstyle with black takes a few seconds with a terse output. Thus, test-checkstyle-diff is no longer necessary. Expand scope of checkstyle to all python files in the repo, replacing test-checkstyle with checkstyle-python. Also, fixstyle-python is now available for automatic style formatting. Note: python virtualenv has been consolidated in test/Makefile, test/requirements*.txt which will eventually be moved to a central location. This is required to simply the automated generation of docker executor images in the CI. Type: improvement Change-Id: I022a326603485f58585e879ac0f697fceefbc9c8 Signed-off-by: Klement Sekera <klement.sekera@gmail.com> Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
2021-11-02build: remove unnecessary executable bitsRay Kinsella1-0/+0
Run 'find src -executable -type f', remove unnecessary executable bits from the source tree. Type: refactor Signed-off-by: Ray Kinsella <mdr@ashroe.eu> Change-Id: I070e22c8fb2ef8712bc3ea620727ee5ab3d9a9fb
2021-10-06wireguard: add events for peerArtem Glazychev1-8/+136
we can receive events from peer about its state: -WIREGUARD_PEER_STATUS_DEAD -WIREGUARD_PEER_ESTABLISHED Type: improvement Change-Id: Ide83fbe2cfafa79ded5bcf3f6a884c26a7583db0 Signed-off-by: Artem Glazychev <artem.glazychev@xored.com>
2021-10-06wireguard: add ipv6 supportArtem Glazychev1-51/+448
Type: improvement Signed-off-by: Artem Glazychev <artem.glazychev@xored.com> Change-Id: If1a7e82ce163c4c4acaa5acf45ad2b88371396f6
2021-10-04wireguard: use the same udp-port for multi-tunnelArtem Glazychev1-0/+104
now we can reuse udp-port for many wireguard interfaces Type: improvement Change-Id: I14b5a9dbe917d83300ccb4d6907743d88355e5c5 Signed-off-by: Artem Glazychev <artem.glazychev@xored.com>
2021-09-30wireguard: move adjacency processing from wireguard_peer to wireguard_interfaceArtem Glazychev1-14/+36
now we should add routes manually Type: improvement Change-Id: I877511a18854efdfad02939267d38a216b2ccec3 Signed-off-by: Artem Glazychev <artem.glazychev@xored.com>
2021-05-13tests: move test source to vpp/testDave Wallace1-0/+748
- Generate copyright year and version instead of using hard-coded data Type: refactor Signed-off-by: Dave Wallace <dwallacelf@gmail.com> Change-Id: I6058f5025323b3aa483f5df4a2c4371e27b5914e