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2021-11-15fib: re-evaluate the import/export state of a prefix.Neale Ranns1-73/+141
Type: fix re-evaluate the import/export state of a prefix when the interface it is attached to rebinds to a different table. Only attached routes have import/export requirements, so we can back walk from the glean adjacency when the interface rebinds tables. There are two cases to consider. 1. the rebind may change the prefix from/to import 2. the import VRF may change Signed-off-by: Neale Ranns <neale@graphiant.com> Change-Id: I25b6af43b3b2d8f701dfbe7a08710dc56b3f5778
2021-09-29fib: add barrier lock for fib_urpf_list_pool and fib_entry_poolStanislav Zaikin1-0/+11
Pools fib_urpf_list_pool and fib_entry_pool can grow while ip6_urpf_loose_check/fib_entry_get_flags_for_source are being executed. That may result as a crash in mt environment. Type: fix Change-Id: I44ca2cb70255e7aaf2e1f7a7d2eecd25cbdd0aaa Signed-off-by: Stanislav Zaikin <zstaseg@gmail.com>
2021-02-15ip: Path MTUNeale Ranns1-2/+18
Type: feature Support setting the MTU for a peer on an interface. The minimum value of the path and interface MTU is used at forwarding time. the path MTU is specified for a given peer, by address and table-ID. In the forwarding plane the MTU is enfored either: 1 - if the peer is attached, then the MTU is set on the peer's adjacency 2 - if the peer is not attached, it is remote, then a DPO is added to the peer's FIB entry to perform the necessary fragmentation. Signed-off-by: Neale Ranns <neale@graphiant.com> Change-Id: I8b9ea6a07868b50e97e2561f18d9335407dea7ae
2021-02-01fib: Changes to interpose sourceNeale Ranns1-2/+2
Type: improvement 1) stack the interpose on any path-extensions (e.g. labels) from the next best source 2) allow more than 1 source to contribute a DPO for a given prefix Signed-off-by: Neale Ranns <neale@graphiant.com> Change-Id: Idc2fbb36cfbd2387081765d8af0f1fbe61612160
2020-12-14misc: move to new pool_foreach macrosDamjan Marion1-9/+9
Type: refactor Change-Id: Ie67dc579e88132ddb1ee4a34cb69f96920101772 Signed-off-by: Damjan Marion <damarion@cisco.com>
2020-10-26fib: API to extract any resolving interface rather than the one from theNeale Ranns1-0/+21
best source Type: improvement Signed-off-by: Neale Ranns <neale.ranns@cisco.com> Change-Id: Iaa91cbc7eba94f4ffbdc249ecdb49770bd2ae916
2020-07-06fib: fix debug preprocessor directivesMatthew Smith1-1/+1
Type: fix Some debugging declarations were wrapped in an 'ifdef CLIB_DEBUG'. This seems to always evaluate true because clib.h defines CLIB_DEBUG to 0 if its not defined. The result is that if a route table is added and a route is added to it and then the table is deleted, VPP exits because the debug function fib_table_assert_empty() gets called whether VPP was started using a debug build or a release build. Change the ifdef to 'if CLIB_DEBUG > 0'. Change-Id: I357dc2c299e81b95244f2f7efaadb8e0de27627a Signed-off-by: Matthew Smith <mgsmith@netgate.com>
2020-02-13fib: Fix some more realloc errorsNeale Ranns1-1/+1
Type: fix Change-Id: I6011f5d6eae79019d3c16a260a9bedf0a76d2151 Signed-off-by: Neale Ranns <nranns@cisco.com>
2019-12-17ip: Protocol Independent IP NeighborsNeale Ranns1-0/+23
Type: feature - ip-neighbour: generic neighbour handling; APIs, DBs, event handling, aging - arp: ARP protocol implementation - ip6-nd; IPv6 neighbor discovery implementation; separate ND, MLD, RA - ip6-link; manage link-local addresses - l2-arp-term; events separated from IP neighbours, since they are not the same. vnet retains just enough education to perform ND/ARP packet construction. arp and ip6-nd to be moved to plugins soon. Change-Id: I88dedd0006b299344f4c7024a0aa5baa6b9a8bbe Signed-off-by: Neale Ranns <nranns@cisco.com>
2019-12-04fib: Decouple source from priority and behaviourNeale Ranns1-34/+26
Type: feature the fib_source_t enum alone no longer defines the priority and behaviour, instead each source must be allocated these attributes. This allows the creation of other sources by the plugins (and soon over the API). Signed-off-by: Neale Ranns <nranns@cisco.com> Change-Id: I890ee820fbc16079ee417ea1fbc163192806e853
2019-11-26fib: Another realloc burnNeale Ranns1-5/+13
Type: fix harmless this time since it only affects the debug statement, but it still crashes an ASAN image. Signed-off-by: Neale Ranns <nranns@cisco.com> Change-Id: Ie02e7fe3014b98b9f8c83447f59017a380ab3948
2019-10-14fib: recursive calculation leads to delegate pool reallocNeale Ranns1-4/+14
Type: fix Change-Id: Ib7ac53d1b59b641ccd3b1d733107d7f1ba174314 Signed-off-by: Neale Ranns <nranns@cisco.com>
2019-07-19fib: FIB Entry trackingNeale Ranns1-8/+11
Instead of all clients directly RR sourcing the entry they are tracking, use a deidcated 'tracker' object. This tracker object is a entry delegate and a child of the entry. The clients are then children of the tracker. The benefit of this aproach is that each time a new client tracks the entry it doesn't RR source it. When an entry is sourced all its children are updated. Thus, new clients tracking an entry is O(n^2). With the tracker as indirection, the entry is sourced only once. Type: feature Change-Id: I5b80bdda6c02057152e5f721e580e786cd840a3b Signed-off-by: Neale Ranns <nranns@cisco.com>
2019-06-18fib: fib api updatesNeale Ranns1-12/+12
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>
2019-03-28Typos. A bunch of typos I've been collecting.Paul Vinciguerra1-7/+7
Change-Id: I53ab8d17914e6563110354e4052109ac02bf8f3b Signed-off-by: Paul Vinciguerra <pvinci@vinciconsulting.com>
2019-03-26FIB: do debug before remvoing last sourceNeale Ranns1-2/+2
Change-Id: I4e1cde754eb4d6406cd6cd51f37d89552bdb6a53 Signed-off-by: Neale Ranns <nranns@cisco.com>
2018-12-20FIB: encode the label stack in the FIB path during table dumpNeale Ranns1-1/+14
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 Ranns1-17/+60
Change-Id: I9052202b8cbcf656e61d635253d515f0f3a8d145 Signed-off-by: Neale Ranns <nranns@cisco.com>
2018-09-20Route counters in the stats segmentNeale Ranns1-0/+10
route ADD API changed to return the stats segment index to use to read the counters Change-Id: I2ef41e01eaa2f9cfaa49d9c88968897793825925 Signed-off-by: Neale Ranns <nranns@cisco.com>
2018-07-30FIB: return entry prefix by const reference to avoid the copyNeale Ranns1-9/+5
Change-Id: I09b8406168df4b6b28df3ede24ee839681be0195 Signed-off-by: Neale Ranns <neale.ranns@cisco.com>
2018-04-30FIB: elide cover walk for insert of host routeNeale Ranns1-0/+13
Change-Id: I2d39e56ff605e3a24927d6330d65d0406f588381 Signed-off-by: Neale Ranns <nranns@cisco.com>
2018-03-26Restore the brief FIB entry printingNeale Ranns1-7/+7
Change-Id: I007d48aeb934e5d2f087ca3b8ddc6f7a0e48d411 Signed-off-by: Neale Ranns <nranns@cisco.com>
2018-03-20FIB Interpose SourceNeale Ranns1-102/+85
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>
2018-01-18FIB Inherited SrouceNeale Ranns1-82/+156
forwarding provided by the source is pushed to all other entries it covers in the sub-tree Change-Id: I2a45222ef653358f55c2436de3e3c6353cfadba2 Signed-off-by: Neale Ranns <nranns@cisco.com>
2017-12-05Revert "FIB: optimise for src memory allocations"Neale Ranns1-45/+22
This reverts commit 84517cfd1508f6da24937f310f7fffe752f22584. Change-Id: Ic7eeffa2ed4607d3d653f34b93c20c833c789ee1 Signed-off-by: Neale Ranns <nranns@cisco.com>
2017-11-26FIB: optimise for src memory allocationsNeale Ranns1-22/+45
Most FIB entries will only ever have one source providing forwarding information. Currently the source infom is stored in a vector of sources on the FIB entry. Change this to a union of one source inline and a vector. This saves the need to alloc a vector of sources for each FIB entry. before: vpp# ip route add count 1500000 1.0.0.1/32 via 10.10.10.2 loop0 4.392857e5 routes/sec vpp# ip route del count 1500000 1.0.0.1/32 via 10.10.10.2 loop0 9.175464e5 routes/sec vpp# ip route add count 1500000 1.0.0.1/32 via 10.10.10.2 loop0 5.193375e5 routes/sec vpp# sh fib mem FIB memory Name Size in-use /allocated totals Entry 72 1500011/ 1500011 108000792/108000792 Entry Source 32 1500011/ 1500011 48000352/48000352 after: vpp# ip route add count 1500000 1.0.0.1/32 via 10.10.10.2 loop0 4.726560e5 routes/sec vpp# ip route del count 1500000 1.0.0.1/32 via 10.10.10.2 loop0 1.041629e6 routes/sec vpp# ip route add count 1500000 1.0.0.1/32 via 10.10.10.2 loop0 5.702895e5 routes/sec vpp# sh fib mem FIB memory Name Size in-use /allocated totals Entry 96 1500011/ 1500011 144001056/144001056 Entry Source 32 0 / 0 0/0 Change-Id: Ic71e413eaff1ec152656beda3b94186f7894ea49 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/+1
- 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>
2017-09-13Add a name to the creation of an IP and MPLS tableNeale Ranns1-4/+2
Change-Id: I4b4648831551519b2ffb6f93255d28a4b8726c22 Signed-off-by: Neale Ranns <nranns@cisco.com>
2017-09-11FIB table add/delete APINeale Ranns1-2/+13
part 2; - this adds the code to create an IP and MPLS table via the API. - but the enforcement that the table must be created before it is used is still missing, this is so that CSIT can pass. Change-Id: Id124d884ade6cb7da947225200e3bb193454c555 Signed-off-by: Neale Ranns <nranns@cisco.com>
2017-08-08L2 over MPLSNeale Ranns1-1/+7
[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 Ranns1-1/+1
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>
2017-06-21ARP: ignore non-connected routes and non-interface sources when determing if ↵Neale Ranns1-3/+7
source is connected Change-Id: I39fb0ec44cc322eaa12c0ff0700fc405d3982bfc Signed-off-by: Neale Ranns <nranns@cisco.com>
2017-05-23ARP/ND entries for the same address on different interfaces (VPP-848)Neale Ranns1-10/+2
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>
2017-04-26IP Flow Hash Config fixesNeale Ranns1-0/+29
- the flow hash config is (and was) cached on the load-balance object so the fib_table_t struct is not used a switch time. Therefore changes to the table's flow hash config need to be propagated to all load-balances and hance all FIB entries in the table. - enable API for setting the IPv6 table flow hash config - use only the hash config in the fib_table_t object and not on the ipX_fib_t - add tests. Change-Id: Ib804c11162c6d4972c764957562c372f663e05d4 Signed-off-by: Neale Ranns <nranns@cisco.com>
2017-04-07MPLS McastNeale Ranns1-7/+40
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>
2017-04-06BFD-FIB interactionsNeale Ranns1-16/+34
- single-hop BFD: attach a delegate to the appropriate adjacency - multi-hop BFD [not supported yet]: attach a delegate to the FIB entry. adjacency/fib_entry state tracks the BFD session state. when the state is down the object does not contribute forwarding hence and hence dependent objects will not use it. For example, if a route is ECMP via two adjacencies and one of them is BFD down, then only the other is used to forward (i.e. we don't drop half the traffic). Change-Id: I0ef53e20e73b067001a132cd0a3045408811a822 Signed-off-by: Neale Ranns <nranns@cisco.com>
2017-04-01MTRIE Optimisations 2Neale Ranns1-2/+2
1) 16-8-8 stride. Reduce trie depth walk traded with increased memory in the top PLY. 2) separate the vector of protocol-independent (PI) fib_table_t with the vector of protocol dependent (PD) FIBs. PD FIBs are large structures, we don't want to burn the memory for ech PD type 3) Go straight to the PD FIB in the data-path thus avoiding an indirection through, e.g., a PLY pool. Change-Id: I800d1ed0b2049040d5da95213f3ed6b12bdd78b7 Signed-off-by: Neale Ranns <nranns@cisco.com>
2017-02-24FIB: 1) fix pool realloc during prefix export. 2) don't walk off the end of ↵Neale Ranns1-4/+24
the path-extension vector Change-Id: I8bd8f6917ace089edb1f65bd017b478ee198c03f Signed-off-by: Neale Ranns <nranns@cisco.com>
2017-02-20FIB reset leaves residual routes. Wrong API used to remove the routes meant ↵Neale Ranns1-1/+4
the lock count on the entry did not drop to zero Change-Id: I6e2dff8c3c7976fd1c2e4c5258f5dc73123aa9b7 Signed-off-by: Neale Ranns <nranns@cisco.com>
2017-01-05FIB memory leaks (VPP-578)Neale Ranns1-0/+1
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/+1503
Change-Id: I7b51f88292e057c6443b12224486f2d0c9f8ae23 Signed-off-by: Damjan Marion <damarion@cisco.com>