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path: root/src/vnet/fib/fib_path_list.c
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2022-04-04vppinfra: make _vec_len() read-onlyDamjan Marion1-2/+1
Use of _vec_len() to set vector length breaks address sanitizer. Users should use vec_set_len(), vec_inc_len(), vec_dec_len () instead. Type: improvement Change-Id: I441ae948771eb21c23a61f3ff9163bdad74a2cb8 Signed-off-by: Damjan Marion <damarion@cisco.com>
2021-12-21fib: MPLS EOS chains built for attached prefixes should link to a lookup DPONeale Ranns1-2/+4
Type: fix Presently a local label associated with an attached or connected prefix will link to the glean. This is a problem since it will never use the adj-fibs that are installed for that attached prefix. Instead link the local label to a lookup in the table in which the attached link is bound. Signed-off-by: Neale Ranns <neale@graphiant.com> Change-Id: Iad49fb6168b9ba47216a9a52bd262363b49c3c43
2021-10-22fib: Don't back walk from a path-list when a child fist attaches.Neale Ranns1-11/+7
Type: fix If the walk is triggered when the child is added, then that child is visited in the walk. However, since it is just attahcing to the path-list it may not, or indeed cannot, have all the context it needs to successfully handle the walk. In the case of MPLS tunnel, it does not have the path extensions ready, and cannot since the path extensions need to resolve on the path-list. Signed-off-by: Neale Ranns <neale@graphiant.com> Change-Id: I027af8cf2f522d2f6e37931bea60c767f0cb667d
2021-09-30fib: doc nitfixesNathan Skrzypczak1-1/+1
Type: improvement Change-Id: I29346c849a5e1ff3c2ea399671f9f50d075e9f18 Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
2020-12-18fib: Remove unused FIB path-list DB variableNeale Ranns1-5/+0
Type: refactor Signed-off-by: Neale Ranns <neale.ranns@cisco.com> Change-Id: I64527e9f5259e9984dc1e90023b367ee0fd8deeb
2020-12-14misc: move to new pool_foreach macrosDamjan Marion1-3/+3
Type: refactor Change-Id: Ie67dc579e88132ddb1ee4a34cb69f96920101772 Signed-off-by: Damjan Marion <damarion@cisco.com>
2020-02-07fib: fix non-NULL terminated vectors in cli outputBenoît Ganne1-1/+1
Type: fix Change-Id: Idbb3f29b13a5c84a8585c4299e51fdfc35f7e1ad Signed-off-by: Benoît Ganne <bganne@cisco.com>
2019-09-25fib: fix some typos in fib/mtrieLijian.Zhang1-2/+2
Type: fix Change-Id: I1af0e4a9bc23a3b6b6d3a74df093801ab6cae1f8 Signed-off-by: Lijian Zhang <Lijian.Zhang@arm.com>
2019-07-31fib: Add some path-list flags to its keyNeale Ranns1-1/+4
Type: fix Ticket: 1729 The flags that are permanently set on a path-list should form part of its key in the path-list DB. Otherwise, if shared, they will not behave as expected. Change-Id: I0aa7c7c5d270c97b08014e4a47ddbdcee2358706 Signed-off-by: Neale Ranns <nranns@cisco.com>
2019-06-26fib: default flow hash config for each DPO protocol typeNeale Ranns1-2/+1
Type: fix Fixes: 59fa121f Change-Id: I9eb4fe1612734e54932228527c37bf33b705dbdb Signed-off-by: Neale Ranns <nranns@cisco.com>
2019-06-18fib: fib api updatesNeale Ranns1-92/+144
Enhance the route add/del APIs to take a set of paths rather than just one. Most unicast routing protocols calcualte all the available paths in one run of the algorithm so updating all the paths at once is beneficial for the client. two knobs control the behaviour: is_multipath - if set the the set of paths passed will be added to those that already exist, otherwise the set will replace them. is_add - add or remove the set is_add=0, is_multipath=1 and an empty set, results in deleting the route. It is also considerably faster to add multiple paths at once, than one at a time: vat# ip_add_del_route 1.1.1.1/32 count 100000 multipath via 10.10.10.11 100000 routes in .572240 secs, 174751.80 routes/sec vat# ip_add_del_route 1.1.1.1/32 count 100000 multipath via 10.10.10.12 100000 routes in .528383 secs, 189256.54 routes/sec vat# ip_add_del_route 1.1.1.1/32 count 100000 multipath via 10.10.10.13 100000 routes in .757131 secs, 132077.52 routes/sec vat# ip_add_del_route 1.1.1.1/32 count 100000 multipath via 10.10.10.14 100000 routes in .878317 secs, 113854.12 routes/sec vat# ip_route_add_del 1.1.1.1/32 count 100000 multipath via 10.10.10.11 via 10.10.10.12 via 10.10.10.13 via 10.10.10.14 100000 routes in .900212 secs, 111084.93 routes/sec Change-Id: I416b93f7684745099c1adb0b33edac58c9339c1a Signed-off-by: Neale Ranns <neale.ranns@cisco.com> Signed-off-by: Ole Troan <ot@cisco.com> Signed-off-by: Paul Vinciguerra <pvinci@vinciconsulting.com>
2019-06-05L3 cross connectNeale Ranns1-4/+8
- all packets input on interface X are load-balanced over the set of paths provided. Change-Id: Ic27cb88c4cd5d6d3462570632daff7a43d5a652d Signed-off-by: Neale Ranns <nranns@cisco.com>
2019-04-08fixing typosJim Thompson1-1/+1
Change-Id: I215e1e0208a073db80ec6f87695d734cf40fabe3 Signed-off-by: Jim Thompson <jim@netgate.com>
2018-12-20FIB: encode the label stack in the FIB path during table dumpNeale Ranns1-2/+26
Change-Id: I28e8a99b980ad343a4209e673201791b91ceab4e Signed-off-by: Neale Ranns <nranns@cisco.com>
2018-10-23c11 safe string handling supportDave Barach1-1/+1
Change-Id: Ied34720ca5a6e6e717eea4e86003e854031b6eab Signed-off-by: Dave Barach <dave@barachs.net>
2018-10-16FIB: use vlib-log for debuggingNeale Ranns1-20/+21
Change-Id: I9052202b8cbcf656e61d635253d515f0f3a8d145 Signed-off-by: Neale Ranns <nranns@cisco.com>
2018-10-16Sticky Load-balanceNeale Ranns1-6/+23
keep the number of buckets in the load-balanced fixed. If a path goes dwon fill its buckets with those from the next available up path. Change-Id: I15603ccb899fa9b77556b898c99136379cf32eae Signed-off-by: Neale Ranns <nranns@cisco.com>
2018-03-20FIB Interpose SourceNeale Ranns1-5/+2
The interpose source allows the source/provider to insert/interpose a DPO in the forwarding chain of the FIB entry ahead of the forwarding provided by the next best source. For example if the API source (i.e the 'control plane') has provided an adjacency for forwarding, then an interpose source (e.g. a monitoring service) couold interpose a replicatte DPO to copy the traffic to another location AND forward using the API's adjacency. To use the interose feature an existing source (i.e FIB_SOURCE_PLUGIN_HI) cn specifiy as a flag FIB_ENTRY_FLAG_INTERPOSE and provide a DPO to interpose. One might also consider using interpose in conjunction with FIB_ENTRY_FLAG_COVER_INHERIT to ensure the interpose object affects all prefixes in the sub-tree. Change-Id: I8b2737b985f8f7c08123406d0491881def347b52 Signed-off-by: Neale Ranns <nranns@cisco.com>
2017-12-19FIB memory leak during recursive loop detectionNeale Ranns1-0/+2
Change-Id: I5ecd43330b3329b072e6da62a4eed1641eb17f8f Signed-off-by: Neale Ranns <nranns@cisco.com>
2017-12-15fib: fix show fib path-list and pathFlorin Coras1-2/+2
Change-Id: I465282e513b6a0482e96dd02fc7e0e4ed3e3731a Signed-off-by: Florin Coras <fcoras@cisco.com>
2017-12-09BIER in non-MPLS netowrksNeale Ranns1-25/+32
as decsribed in section 2.2 ihttps://tools.ietf.org/html/draft-ietf-bier-mpls-encapsulation-10 with BIFT encoding from: https://tools.ietf.org/html/draft-wijnandsxu-bier-non-mpls-bift-encoding-00 changes: 1 - introduce the new BIFT lookup table. BIER tables that have an associated MPLS label are added to the MPLS-FIB. Those that don't are added to the BIER table 2 - BIER routes that have no associated output MPLS label will add a BIFT label. 3 - The BIER FMask has a path-list as a member to resolve via any possible path. Change-Id: I1fd4d9dbd074f0e855c16e9329b81460ebe1efce Signed-off-by: Neale Ranns <nranns@cisco.com>
2017-11-26FIB: store the node type not the function pointer.Neale Ranns1-2/+0
Saves memory at no appreciable performance cost. before: DBGvpp# sh fib mem FIB memory Name Size in-use /allocated totals Entry 80 7 / 150 560/12000 after: DBGvpp# sh fib mem FIB memory Name Size in-use /allocated totals Entry 72 7 / 7 504/504 Change-Id: Ic5d3920ceb57b54260dc9af2078c26484335fef1 Signed-off-by: Neale Ranns <nranns@cisco.com>
2017-11-09BIERNeale Ranns1-0/+5
- see draft-ietf-bier-mpls-encapsulation-10 - midpoint, head and tail functions - supported payload protocols; IPv4 and IPv6 only. Change-Id: I59d7363bb6fdfdce8e4016a68a9c8f5a5e5791cb Signed-off-by: Neale Ranns <nranns@cisco.com>
2017-08-08L2 over MPLSNeale Ranns1-2/+2
[support for VPWS/VPLS] - switch to using dpo_proto_t rather than fib_protocol_t in fib_paths so that we can describe L2 paths - VLIB nodes to handle pop/push of MPLS labels to L2 Change-Id: Id050d06a11fd2c9c1c81ce5a0654e6c5ae6afa6e Signed-off-by: Neale Ranns <nranns@cisco.com>
2017-07-18FIB path preferenceNeale Ranns1-0/+10
Paths are given a preference, lowest value is 'best'. Only paths that are up are up contribute to fprwarding - that's unchanged. What's new is that of the path's that re up only those that have the best preference contribute. A poor man's primary and backup. It's not true primary/backup function because the FIB must converge before the lower preference paths are used. Change-Id: Ie4453c4a7b1094c6c2b51fe1594b8302103bb68e Signed-off-by: Neale Ranns <nranns@cisco.com>
2017-05-23ARP/ND entries for the same address on different interfaces (VPP-848)Neale Ranns1-9/+22
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>
2017-04-24Improve Load-Balance MAPsNeale Ranns1-12/+61
- only build them for popular path-lists (where popular means more than 64 children) the reason to have a map is to improve convergence speed for recursive prefixes - if there are only a few this technique is not needed - only build them when there is at least one path that has recursive constraints, i.e. a path that can 'fail' in a PIC scenario. - Use the MAPS in the switch path. - PIC test cases for functionality (not convergence performance) Change-Id: I70705444c8469d22b07ae34be82cfb6a01358e10 Signed-off-by: Neale Ranns <nranns@cisco.com>
2017-04-07MPLS McastNeale Ranns1-98/+172
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 Ranns1-5/+3
Change-Id: I063d85200d12b09545ae1c373c7fc69112ae3b34 Signed-off-by: Neale Ranns <nranns@cisco.com>
2017-01-27IP Multicast FIB (mfib)Neale Ranns1-3/+6
- 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>
2017-01-05FIB memory leaks (VPP-578)Neale Ranns1-8/+18
1) vec_free the fe_srcs of a fib_entry_t when the fib_entry_t is itself reed 2) in the load-balance fixup if a drop path is required add this to a new vector of next-hops 'fixed_nhs'. This vector is managed by the load-balance function. The caller continues to manage its own set. The function is now const implying that the caller is safe to assume the next-hops do not change. Change-Id: I0f29203ee16b9a270f40edf237488fa99ba65320 Signed-off-by: Neale Ranns <nranns@cisco.com> Signed-off-by: Neale Ranns <neale.ranns@cisco.com>
2016-12-28Reorganize source tree to use single autotools instanceDamjan Marion1-0/+1223
Change-Id: I7b51f88292e057c6443b12224486f2d0c9f8ae23 Signed-off-by: Damjan Marion <damarion@cisco.com>