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2019-07-19fib: FIB Entry trackingNeale Ranns1-3/+2
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 Ranns1-5/+4
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>
2018-10-16FIB: use vlib-log for debuggingNeale Ranns1-0/+4
Change-Id: I9052202b8cbcf656e61d635253d515f0f3a8d145 Signed-off-by: Neale Ranns <nranns@cisco.com>
2018-09-20Route counters in the stats segmentNeale Ranns1-0/+2
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>
2018-08-22IPIP and SIXRD tunnels create API needs table-IDs not fib-indexesNeale Ranns1-0/+5
Change-Id: Ifaef196a24fa9b6924f2b9692318f69763cee5e1 Signed-off-by: Neale Ranns <neale.ranns@cisco.com>
2018-07-30FIB: return entry prefix by const reference to avoid the copyNeale Ranns1-2/+1
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/+1
Change-Id: I2d39e56ff605e3a24927d6330d65d0406f588381 Signed-off-by: Neale Ranns <nranns@cisco.com>
2018-04-04NAT added FIB entries have a preference lower than API/CLINeale Ranns1-0/+5
Change-Id: Ia99490180683e8649784f7d9d18c509c3ca78438 Signed-off-by: Neale Ranns <nranns@cisco.com>
2018-03-20FIB Interpose SourceNeale Ranns1-10/+50
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>
2018-03-13Common form of fib-path reproting in dumpsNeale Ranns1-0/+1
Change-Id: I8f6fdbbeef2ac7e9fe5d87490ae5cba6e9a0b294 Signed-off-by: Neale Ranns <nranns@cisco.com>
2018-03-05IP6 link-local tableNeale Ranns1-0/+11
- IPv6 link local table is a per-SW interface array of IPv6 unicast FIBs - the per-interface ocst is sizeof(fib_table_t) which is small, w.r.t. the cost of an interface - FE80::/10 in the 'global' table points to a DPO that performs a lookup in the input interface's LL fib. Change-Id: Ice834b25ebeeacb2e929d7c864d7ec8c09918cbe Signed-off-by: Neale Ranns <neale.ranns@cisco.com>
2018-03-016RD: Rewritten 6RD RFC5969 support.Ole Troan1-5/+0
Change-Id: Ic30fbcb2630f39e45345d7215babf5d7ed4b33a0 Signed-off-by: Ole Troan <ot@cisco.com>
2018-01-18FIB Inherited SrouceNeale Ranns1-2/+24
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 Ranns1-40/+4
This reverts commit 84517cfd1508f6da24937f310f7fffe752f22584. Change-Id: Ic7eeffa2ed4607d3d653f34b93c20c833c789ee1 Signed-off-by: Neale Ranns <nranns@cisco.com>
2017-11-26FIB: optimise for src memory allocationsNeale Ranns1-4/+40
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>
2017-11-09BIERNeale 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>
2017-10-25L3 proxy FIB source for container networkingAndrew Yourtchenko1-0/+5
Change-Id: I4164c4c19c8dbfd73e6ddf94a12056325cc093b9 Signed-off-by: Neale Ranns <nranns@cisco.com> Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
2017-09-11FIB table add/delete APINeale Ranns1-0/+1
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>
2017-08-03DHCP Client: receive unicast ACKsNeale Ranns1-7/+2
despite VPP DHCP client setting neither ciaddr nor giaddr and setting the broadcast bit (see RFC 2131 section 4.1) some DHCP servers will still send a unicast DCHPACK. So as not to drop this VPP must have both 1) a receive FIB entry for the OFFERED IP adress and 2) a 'don't drop me because of uRPF' FIB entry for the DHCP server's address. Change-Id: I167d858deb45629318cbdccf5bf67d971730a42f Signed-off-by: Neale Ranns <nranns@cisco.com>
2017-05-23ARP/ND entries for the same address on different interfaces (VPP-848)Neale Ranns1-1/+1
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>
2017-05-05First commit SR MPLSPablo Camarillo1-4/+4
Change-Id: I961685a2a0e4c314049444c64eb6ccf877c278dd Signed-off-by: Pablo Camarillo <pcamaril@cisco.com>
2017-04-26IP Flow Hash Config fixesNeale Ranns1-0/+2
- 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 Ranns1-3/+10
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 Ranns1-0/+1
- 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>
2017-03-08Proxy ND (RFC4389 - or a sub-set thereof). This allows the 'emulation' of ↵Neale Ranns1-0/+5
bridging. That is hosts in one sub-net reachable via differenet interfaces. Introducate a new API command: ip6 nd proxy <host-address> <interface> this indicates 2 things; 1) that host <host-address> is reachable out of interface <interface>. VPP will thus install that route. 2) NS requests sent to <host-address> will be responeded to (i.e. proxied). Change-Id: I863f967fdb5097ab3b574769c70afdbfc8d5478a Signed-off-by: Neale Ranns <nranns@cisco.com>
2017-03-06ioam: manycast using iOAM and SR (VPP-628)Shwetha Bhandari1-1/+8
Change-Id: I6d2afda991d771fb4a89fc3f6544f8e940a9b9f0 Signed-off-by: Shwetha Bhandari <shwethab@cisco.com>
2017-01-27IP Multicast FIB (mfib)Neale Ranns1-1/+1
- 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>
2016-12-28Reorganize source tree to use single autotools instanceDamjan Marion1-0/+530
Change-Id: I7b51f88292e057c6443b12224486f2d0c9f8ae23 Signed-off-by: Damjan Marion <damarion@cisco.com>