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path: root/src/plugins/wireguard/wireguard_send.c
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2022-12-01wireguard: add atomic mutexGabriel Oginski1-2/+15
The initiate handshake process can be called a numbers times for each peers, then the main VPP thread called by Wireguard starting to allocate memory. This behaviour can lead to out of memory when VPP has a lot of Wireguard tunnels concurrently. This fix add mutex to send only once handshake initiate at time for each peers. Type: fix Signed-off-by: Gabriel Oginski <gabrielx.oginski@intel.com> Change-Id: I13b4b2d47021753926d42a38ccadb36a411c5b79
2022-11-29wireguard: compute checksum for outer ipv6 headerArtem Glazychev1-2/+10
Type: fix Signed-off-by: Artem Glazychev <artem.glazychev@xored.com> Change-Id: I477e92712e441c91789afdf9be389d967acfa799
2022-09-27wireguard: fix re-handshake timer when response sentAlexander Chernavin1-1/+0
Type: fix As per the protocol: A handshake initiation is retried after "REKEY_TIMEOUT + jitter" ms, if a response has not been received... Currently, if retransmit handshake timer is started, it will trigger after "REKEY_TIMEOUT + jitter" ms and will try to send a handshake initiation via wg_send_handshake() given that no responses have been received. wg_send_handshake() will verify that time stored in REKEY_TIMEOUT has passed since last handshake initiation sending and if has, will send a handshake initiation. Time when a handshake initiation was last sent is stored in last_sent_handshake. The problem is that last_sent_handshake is not only updated in wg_send_handshake() when sending handshake initiations but also in wg_send_handshake_response() when sending handshake responses. When retransmit handshake timer triggers and a handshake response has been sent recently, a handshake initiation will not be sent because for wg_send_handshake() it will look like that time stored in REKEY_TIMEOUT has not passed yet. Also, the timer will not be restarted. wg_send_handshake_response() must not update last_sent_handshake, because this time is used only when sending handshake intitiations. And the protocol does not say that handshake initiation retransmission and handshake response sending (i.e. replying to authenticated handshake initiations) must coordinate. With this fix, stop updating last_sent_handshake in wg_send_handshake_response(). Also, this fixes tests that used to wait for "REKEY_TIMEOUT + 1" seconds and did not receive any handshake initiations. Then they fail. Also, long-running tests that send wrong packets and do not expect anything in reply may now receive handshake intiations, consider them as replies to the wrond packets, and fail. Those are updated to filter out handshake initiations in such verifications. Moreover, after sending wrong packets, error counters are already inspected there to confirm packet processing was unsuccessful. Signed-off-by: Alexander Chernavin <achernavin@netgate.com> Change-Id: I43c428c97ce06cb8a79d239453cb5f6d1ed609d6
2022-08-18wireguard: fix ipv6 handshake packetBenoît Ganne1-3/+1
IPv6 payload length should not include the size of the IPv6 header. Type: fix Change-Id: Iedcd17d0af8d72d9b5f8f9b605da7c99e151bc9d Signed-off-by: Benoît Ganne <bganne@cisco.com>
2022-08-09wireguard: add peers roaming supportAlexander Chernavin1-2/+18
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
2022-08-08wireguard: add dos mitigation supportAlexander Chernavin1-11/+87
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
2021-11-03wireguard: reduce memcopy and prefetch headerGabriel Oginski1-2/+6
Originally wireguard implementation does memory copy of the whole packet in encryption and decryption. This patch removes unnecessary packet copy in wireguard. In addition, it contains some performance improvement such as prefetching header and deleting unnecessary lock and unlock for decryption. Type: improvement Signed-off-by: Gabriel Oginski <gabrielx.oginski@intel.com> Change-Id: I1fe8e54d749e6922465341083b448c842e2b670f
2021-10-06wireguard: add events for peerArtem Glazychev1-7/+6
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 Glazychev1-22/+43
Type: improvement Signed-off-by: Artem Glazychev <artem.glazychev@xored.com> Change-Id: If1a7e82ce163c4c4acaa5acf45ad2b88371396f6
2020-10-21misc: minimize dependencies on udp.hFlorin Coras1-1/+0
Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: Id13f33843b230a1d169560742c4f7b2dc17d8718
2020-10-07misc: Purge unused pg includesNeale Ranns1-1/+0
Type: style Signed-off-by: Neale Ranns <nranns@cisco.com> Change-Id: I26a19e42076e031ec5399d5ca05cb49fd6fbe1cd
2020-09-29wireguard: fix license headersArtem Glazychev1-0/+1
Type: fix Signed-off-by: Artem Glazychev <artem.glazychev@xored.com> Change-Id: If5cc8894e0d1785dd04ab1e460e017580c9b41ce
2020-09-23wireguard: add handoff nodeArtem Glazychev1-32/+57
All timer and control plane functions happen from main thread Type: fix Change-Id: I4fc333c644485cd17e6f426493feef91688d9b24 Signed-off-by: Artem Glazychev <artem.glazychev@xored.com>
2020-09-09wireguard: initial implementation of wireguard protocolArtem Glazychev1-0/+225
Type: feature The main information about plugin you can see in README.md vpp# wireguard ? wireguard create wireguard create listen-port <port> private-key <key> src <IP> [generate-key] wireguard delete wireguard delete <interface> wireguard peer add wireguard peer add <wg_int> public-key <pub_key_other>endpoint <ip4_dst> allowed-ip <prefix>dst-port [port_dst] persistent-keepalive [keepalive_interval] wireguard peer remove wireguard peer remove <index> Change-Id: I85eb0bfc033ccfb2045696398d8a108b1c64b8d9 Signed-off-by: Artem Glazychev <artem.glazychev@xored.com> Signed-off-by: Damjan Marion <damarion@cisco.com> Signed-off-by: Jim Thompson <jim@netgate.com> Signed-off-by: Neale Ranns <nranns@cisco.com> Signed-off-by: Damjan Marion <damarion@cisco.com>