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2017-05-23ARP/ND entries for the same address on different interfaces (VPP-848)Neale Ranns1-4/+4
there are, intentionally, no validation checks in the ARP/ND code to prevent an ARP/ND entry from being installed for an address that is not local to the interface's sub-net. This is ok, since the adjacency/FIB code is designed to handle this case using the 'refinement' criteria - i.e. only installing a FIB entry for the address if the address 'refines' (i.e. is more specific than) the interface's sub-net. However, the refinement criteria currently operates on the FIB entry's prefix (which is a /32, so on the address) and not on the next-hop in the path. So, enter multiple ARP entries for the same address on different links, and this refinement criteria uses only the last added path, and so will remove the FIB entry should the ARP entries be added in the 'wrong' order. This fix updates the refinement criteria to work on each path of the FIB entry. The entry is installed if one of the paths refines the covers and only paths refining the cover contribute forwarding. Per-path refinement checks are stored in path-extensions. The patch is rather large as path-extension, which were previously used only for out-going MPLS labels, have been generalized. Change-Id: I00be359148cb948c32c52109e832a70537a7920a Signed-off-by: Neale Ranns <nranns@cisco.com>
2017-05-19mfib CLI bugs (VPP-852)Neale Ranns2-8/+14
Change-Id: I1b71010e20742eee02693d672e24c85897e37759 Signed-off-by: Neale Ranns <nranns@cisco.com>
2017-05-15Add GTP-U plugin. VPP-694Hongjun Ni1-0/+2
Basic GTP-U feature Change-Id: I31226f890a92c5303ac06e112ed7820cae52d9bd Signed-off-by: Hongjun Ni <hongjun.ni@intel.com>
2017-05-02Allow local/for-us replications for IP multicast routes on the CLINeale Ranns1-4/+2
Change-Id: I046d9402b79fdbc6a6663199ffff8e40a278fd51 Signed-off-by: Neale Ranns <nranns@cisco.com>
2017-04-07MPLS McastNeale Ranns8-165/+417
1 - interface-DPO Used in the Data-plane to change a packet's input interface 2 - MPLS multicast FIB entry Same as a unicast entry but it links to a replicate not a load-balance DPO 3 - Multicast MPLS tunnel Update MPLS tunnels to use a FIB path-list to describe the endpoint[s]. Use the path-list to generate the forwarding chain (DPOs) to link to . 4 - Resolve a path via a local label (of an mLDP LSP) For IP multicast entries to use an LSP in the replication list, we need to decribe the 'resolve-via-label' where the label is that of a multicast LSP. 5 - MPLS disposition path sets RPF-ID For a interface-less LSP (i.e. mLDP not RSVP-TE) at the tail of the LSP we still need to perform an RPF check. An MPLS disposition DPO performs the MPLS pop validation checks and sets the RPF-ID in the packet. 6 - RPF check with per-entry RPF-ID An RPF-ID is used instead of a real interface SW if index in the case the IP traffic arrives from an LSP that does not have an associated interface. Change-Id: Ib92e177be919147bafeb599729abf3d1abc2f4b3 Signed-off-by: Neale Ranns <nranns@cisco.com>
2017-02-25MFIB: changes to improve route add/delete performanceNeale Ranns2-2/+9
Change-Id: I063d85200d12b09545ae1c373c7fc69112ae3b34 Signed-off-by: Neale Ranns <nranns@cisco.com>
2017-02-24MFIB memory leak. free the per-source interface hashNeale Ranns1-0/+2
Change-Id: I0ccb337eb0ed50ccc64193533cd816f6e36e6db5 Signed-off-by: Neale Ranns <nranns@cisco.com>
2017-02-20Python test IP and MPLS objects conform to infra.Neale Ranns8-12/+129
Add IP[46] MFIB dump. Change-Id: I4a2821f65e67a5416b291e4912c84f64989883b8 Signed-off-by: Neale Ranns <nranns@cisco.com>
2017-02-13Basic support for LISP-GPE encapsulated NSH packetsFlorin Coras1-0/+1
Change-Id: I97fedb0f70dd18ed9bbe985407cc5fe714e8a2e2 Signed-off-by: Florin Coras <fcoras@cisco.com>
2017-02-09Improve MFIB doxygen helpNeale Ranns4-4/+12
Change-Id: Ie490b7fd5238cbad23f0199161cc14324fd9c554 Signed-off-by: Neale Ranns <nranns@cisco.com>
2017-02-02Fix SR multicast post mfib commitNeale Ranns6-22/+210
1 - use the SR policy to construct the replicate DPO. Each bucket therein is a SR tunnel. 2 - install a special mfib entry that links via this replicate 3 - forwarding is now mfib-lookup -> replicate -> sr_rewrite (per-tunnel) no need for a separate sr_replicate node. 4 - Stack the sr tunnel on the forwarding DPO of the first-hop FIB entry. no need for a second lookup post SR encap. 5 - fix some path-list lock leaks in the MFIB entry. Change-Id: I20de96ea4c4be4fae252625bde159d9c435c8315 Signed-off-by: Neale Ranns <nranns@cisco.com>
2017-01-31MFIB Coverity warnings. The lock macro is functionally equivalent but more ↵Neale Ranns2-25/+40
expressive (and might appease coverity) Change-Id: Ie3c9b2896a487a0302903bfbdd6348f6f091c67d Signed-off-by: Neale Ranns <nranns@cisco.com>
2017-01-28sh not show in the mfib flags commandsNeale Ranns1-2/+2
Change-Id: If10b878cb05d695eaed9416202fd19bed2e0b793 Signed-off-by: Neale Ranns <nranns@cisco.com>
2017-01-27IP Multicast FIB (mfib)Neale Ranns16-0/+5997
- IPv[46] mfib tables with support for (*,G/m), (*,G) and (S,G) exact and longest prefix match - Replication represented via a new replicate DPO. - RPF configuration and data-plane checking - data-plane signals sent to listening control planes. The functions of multicast forwarding entries differ from their unicast conterparts, so we introduce a new mfib_table_t and mfib_entry_t objects. However, we re-use the fib_path_list to resolve and build the entry's output list. the fib_path_list provides the service to construct a replicate DPO for multicast. 'make tests' is added to with two new suites; TEST=mfib, this is invocation of the CLI command 'test mfib' which deals with many path add/remove, flag set/unset scenarios, TEST=ip-mcast, data-plane forwarding tests. Updated applications to use the new MIFB functions; - IPv6 NS/RA. - DHCPv6 unit tests for these are undated accordingly. Change-Id: I49ec37b01f1b170335a5697541c8fd30e6d3a961 Signed-off-by: Neale Ranns <nranns@cisco.com>