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* ipcpd: Add unit tests for LFA and ECMP algorithmsDimitri Staessens2020-02-231-49/+100
| | | | | | | This adds tests for LFA and ECMP to the graph_test routine. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* ipcpd: Fix infinite recursion in LFADimitri Staessens2020-02-231-2/+2
| | | | | | | | | There were bugs introduced in the LFA algorithm refactor causing infinite recursion and SEGV. The infinite recursion check was added as an explicit compiler flag to the build. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* ipcpd: Fix double free, memleak and malloc checkDimitri Staessens2020-02-162-6/+7
| | | | | | | | Some fixes in the multipath implementation related to memory management that showed up with the static analyzer. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* Add equal-cost multipath routing policyDimitri Staessens2020-02-168-13/+389
| | | | | | | | | | This adds an equal-cost multipath routing policy to Ouroboros, based on Nick Aerts' code. When selected, flows will send packets over all paths with equal cost (hop count). Path selection is round-robin. It does not yet take into account flows that are down. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* ipcpd: Fix uninitialized variable in graphDimitri Staessens2020-02-161-1/+1
| | | | | | | During refactor a variable initialization was removed. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* ipcpd: Rename hashtable to pftDimitri Staessens2020-02-167-351/+346
| | | | | | | | | This makes the hashtable more tailored to a packet forwarding table (PFT). In the end not much of a change was needed, but now it's clear the pft maps a destination address to a list of (outgoing) fds. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* ipcpd: Fix minor things in graph and link_stateDimitri Staessens2020-02-162-23/+74
| | | | | | | | | | The vertex was used before definition in the graph implementation. Fixed potential data race in link_state algorithm. Added missing asserts. Removed initialization of variables where not needed to let compiler warn about uninitialized uses. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* lib: Move hashtable from lib to unicastDimitri Staessens2020-02-166-2/+409
| | | | | | | | | | The hashtable is only used for forwarding tables in the unicast IPCP. This moves the generic hashtable out of the library into the unicast IPCP to prepare a more tailored implementation specific to routing tables containing address lists. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* ipcpd: Refactor graph to self-contain LFADimitri Staessens2020-02-161-72/+86
| | | | | | | | | | The LFA algorithm modifies the output of the simple routing algorithm, but the output was mixed in the general call. This moves the LFA subroutine to be self-contained. This makes for a cleaner entry point when adding more routing algorithms. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* build: Update copyright to 20200.16.0Dimitri Staessens2020-01-0211-11/+11
| | | | | Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* build: Refactor normal to unicastDimitri Staessens2019-07-2912-0/+2991
This completes the renaming of the normal IPCP to the unicast IPCP in the sources, to get everything consistent with the documentation. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>