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path: root/src/plugins/linux-cp/lcp_interface.c
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2022-03-25linux-cp: handle ipv4 routes when link goes downAlexander Chernavin1-0/+8
Type: improvement Currently, when the link goes down on an interface, routes that resolve through that interface and created with Nexthop API are removed by the kernel. However, IPv4 routes remain in the FIB because the kernel doesn't send any notifications about that. And for the plugin working with user-space applications that create routes in the kernel using Nexthop API there should be a mechanism to synchronize the FIB and the kernel in this case. With this change, add two new startup configuration options to the plugin to be able to control what should happen with static and dynamic routes managed by the plugin on link down: - del-static-on-link-down (disabled by default, delete routes created with the linux-cp static FIB source on link down), - del-dynamic-on-link-down (disabled by default, delete routes created with the linux-cp dynamic FIB source on link down). Then, monitor link state changes on interfaces for which a linux-cp pair exists. If the link goes down on one of the interfaces, process routes that resolve through that interface according to the new configurations. Signed-off-by: Alexander Chernavin <achernavin@netgate.com> Change-Id: I0fbaeeca3f3d1fcd22e8eebb08a0a4a3d0dfe5b8
2022-03-03linux-cp: reflect hw link state on tap on pair creationAlexander Chernavin1-0/+14
Type: fix Currently, a tap interface created to be a member of a linux-cp pair has default link state (down) and default link speed (10Mb/s). Then the plugin monitors the link state of the paired hardware interface and if it changes, the new link state is reflected on the tap interface. And when the new link state is "up", the link speed is also reflected on the tap interface. The problem is that this scheme implies that the hardware interface's link state is "down" at the moment of the linux-cp pair creation and then changes. But there are cases when the link state is already "up" at that moment. If that is the case, the link speed on the tap interface will remain the default one until the link comes down and then comes up. With this fix, when a linux-cp pair is created, reflect current link state of the hardware interface being paired on the created tap interface. Signed-off-by: Alexander Chernavin <achernavin@netgate.com> Change-Id: I73664d753f4daaa6d439c9ca898fb7363d21c06d
2022-02-22linux-cp: Only enable/disable the punt feature on the 0<->1 transitionNeale Ranns1-9/+14
Type: fix otherwise the feature is enabled n times for n lcp-pairs and the packets go n times through the feature. Signed-off-by: Neale Ranns <neale@graphiant.com> Change-Id: I8e47e4a293d6e2711f54aa09e9545e5e07728026
2022-01-28linux-cp: Linux Control Plane Netlink ListenerNeale Ranns1-2/+2
Type: feature please see FEATURE.yaml for details. Signed-off-by: Neale Ranns <nranns@cisco.com> Signed-off-by: Matthew Smith <mgsmith@netgate.com> Signed-off-by: Jon Loeliger <jdl@netgate.com> Signed-off-by: Pim van Pelt <pim@ipng.nl> Signed-off-by: Neale Ranns <neale@graphiant.com> Change-Id: I6255fd9953d0b03e6b4fe75b67a6845a7c206f74 Signed-off-by: Pim van Pelt <pim@ipng.nl>
2022-01-11linux-cp: Add VPP->Linux synchronizationPim van Pelt1-156/+106
Part 1 -- notes in https://ipng.ch/s/articles/2021/08/13/vpp-2.html Add the ability for VPP to copy out (sync) its state from the dataplane to Linux Interface Pairs, when they exist. Gated by a configuration flag (linux-cp { lcp-sync }), and by a CLI option to toggle on/off, synchronize the following events: - Interface state changes - Interface MTU changes - Interface IPv4/IPv6 address add/deletion In VPP, subints can have any link state and MTU, orthogonal to their phy. In Linux, setting admin-down on a phy forces its children to be down as well. Also, in Linux, MTU of children must not exceed that of the phy. Add a state synchronizer which walks over phy+subints to ensure Linux and VPP end up in the same consistent state. Part 2 -- notes in https://ipng.ch/s/articles/2021/08/15/vpp-3.html Add the ability for VPP to autocreate sub-interfaces of existing Linux Interface pairs. Gated by a configuration flag (linux-cp { lcp-auto-subint }), and by a CLI option to toggle on/off, synchronize the following event: - Sub-interface creation (dot1q, dot1ad, QinQ and QinAD) A few other changes: - Add two functions into netlink.[ch] to delete ip4 and ip6 addresses. - Remove a spurious logline (printing MTU) in netlink.c. - Resolve a TODO around vnet_sw_interface_supports_addressing() Type: improvement Signed-off-by: Pim van Pelt <pim@ipng.nl> Change-Id: I34fc070e80af4013be58d7a8cbf64296cc760e4e Signed-off-by: Pim van Pelt <pim@ipng.nl>
2022-01-06tap: add num_tx_queues APINathan Skrzypczak1-0/+1
This adds a create_tap_v3 api that has a num_tx_queues parameter allowing to create more than num_workers queues, following on multi TX support Type: feature Change-Id: Idce433147e8dd165f842241d6c76e041e1b1c9b8 Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
2021-11-03linux-cp: Cleanup any existing pairs when an interface is deletedNeale Ranns1-0/+17
Type: fix This only happens when the user deletes the physical before they delete the pair, that's not supoosed to be the case, but don't crash if it is. Signed-off-by: Neale Ranns <neale@graphiant.com> Change-Id: I8c2317b360d897775dde23833d04430f88531cbd
2021-09-09linux-cp: fix non-NULL terminated stringBenoît Ganne1-1/+1
lip->lip_host_name is a non-NULL terminated vector. Type: fix Change-Id: Ic154ad7f57f0b507204e55f78995cc0e89132e57 Signed-off-by: Benoît Ganne <bganne@cisco.com>
2021-09-09linux-cp: Complete interface creation logicPim van Pelt1-44/+243
Linux Control Plane interface creation logic is currently only able to create untagged interfaces, and dot1q VLAN sub-interfaces. This change makes it possible to create dot1ad VLAN sub-ints, and Q-in-AD as well as Q-in-Q sub-interfaces as well. It makes the plugin a bit more robust by catching a few common errors, such as creating an lcp on a sub-interface without its parent having one, and creating an lcp on a sub-interface that is not exact-match. This change has a bunch of smaller improvemnets as well. I documented my work in this post: https://ipng.ch/s/articles/2021/08/12/vpp-1.html It shows that after the change is merged, all VPP interface types now create and operate cleanly as LCP interfaces as well. Type: improvement Signed-off-by: Pim van Pelt <pim@ipng.nl> Change-Id: I322669f7316d44c227090b83d6a574fb9c00e76a
2021-07-22vppinfra: add abstract socket & netns fnsNathan Skrzypczak1-23/+10
* Add clib_socket_init support for abstract sockets if name starts with an '@' * Add clib_socket_init_netns to open socket in netns * Add clib_netns_open Type: feature Change-Id: I89637ad657c702ec38ddecb5c03a1673d0dfb104 Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
2021-07-15linux-cp: clear all db entries when deleting a pairSergio Gonzalez Monroy1-1/+2
Type: fix Change-Id: I5677cbb183b10c974a3a2e569d1a7a525a7eb45d Signed-off-by: Sergio Gonzalez Monroy <sgmonroy@gmail.com>
2021-06-24linux-cp: add callbacks for pair managementMatthew Smith1-15/+31
Type: improvement Allow callbacks to be registered which will be called when an interface pair is added or deleted. Change-Id: I1c413ac2ada802021f9e56e2f878ce67e5eda2f5 Signed-off-by: Matthew Smith <mgsmith@netgate.com>
2021-05-25linux-cp: A V2 variant of pair create API that returns the hostNeale Ranns1-2/+6
interface created Type: improvement Signed-off-by: Neale Ranns <neale@graphiant.com> Change-Id: I31a83cd50513078895078bae3ae11372d351ddcd
2021-02-25linux-cp: fix vector-used-a-C-string overflowBenoît Ganne1-1/+1
lip_host_name is a non-NULL terminated vector, not a NULL-terminated C-string. Type: fix Change-Id: Ie5da59bc5680be72251904467d77b18263c882f8 Signed-off-by: Benoît Ganne <bganne@cisco.com>
2021-02-04linux-cp: Linux Interface Mirroring for Control Plane IntegrationNeale Ranns1-0/+1016
Type: feature please see FEATURE.yaml for details. Signed-off-by: Neale Ranns <nranns@cisco.com> Signed-off-by: Matthew Smith <mgsmith@netgate.com> Signed-off-by: Jon Loeliger <jdl@netgate.com> Signed-off-by: Pim van Pelt <pim@ipng.nl> Change-Id: I04a45c15c0838906aa787e06660fa29f39f755fa