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2018-02-15Optimize GRE Tunnel and add support for ERSPAN encapJohn Lo4-13/+35
Change GRE tunnel to use the interface type where the same encap node is used as output node for all GRE tunnels, instead of having dedicated output and tx node for each tunnel. This allows for more efficient tunnel creation and deletion at scale tested at 1000's of GRE tunnels. Add support for ERSPAN encap as another tunnel type, in addition to the existing L3 and TEB types. The GRE ERSPAN encap supported is type 2 thus GRE encap need to include sequence number and GRE- ERSPAN tunnel can be created with user secified ERSPAN session ID. The GRE tunnel lookup hash key is updated to inclue tunnel type and session ID, in addition to SIP/DIP and FIB index. Thus, GRE-ERSPAN tunnel can be created, with the appropriate session ID, to be used as output interface for SPAN config to send mirrored packets. Change interface naming so that all GRE tunnels, irrespective of tunnel type, uses "greN" where N is the instance number. Removed interface reuse on tunnel creation and deletion to enable unfied tunnel interface name. Add support of user specified instance on GRE tunnel creation. Thus, N in the "greN" interface name can optionally be specified by user via CLI/API. Optimize GRE tunnel encap DPO stacking to bypass load-balance DPO node since packet output on GRE tunnel always belong to the same flow after 5-tupple hash. Change-Id: Ifa83915744a1a88045c998604777cc3583f4da52 Signed-off-by: John Lo <loj@cisco.com>
2018-02-14session: support local sessions and deprecate redirectsFlorin Coras1-0/+3
Memfd backed shared memory segments can only be negotiated over sockets. For such scenarios, the existing redirect mechanism that establishes cut-through sessions does not work anymore as the two peer application do not share such a socket. This patch adds support for local sessions, as opposed to sessions backed by a transport connection, in a way that is almost transparent to the two applications by reusing the existing binary api messages. Moreover, all segment allocations are now entirely done through the segment manager valloc, so segment overlaps due to independent allocations previously required for redirects are completely avoided. The one notable characteristic of local sessions (cut-through from app perspective) notification messages is that they carry pointers to two event queues, one for each app peer, instead of one. For transport-backed sessions one of the queues can be inferred but for local session they cannot. Change-Id: Ia443fb63e2d9d8e43490275062a708f039038175 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-02-14make-test: use api custom-dump to reduce log size.Dave Wallace1-1/+1
- Reduce log size by using "api trace custom-dump" instead of "api trace dump". - Fix custom-dump output of cli_inband_t api message to include cli command being executed. New output: DBGvpp# api trace custom-dump /tmp/test vl_api_memclnt_delete_t: index: 2 handle: 0x301d8e10 SCRIPT: memclnt_create name vpp_api_test SCRIPT: sw_interface_dump all SCRIPT: control_ping SCRIPT: exec show run Old output: DBGvpp# api trace dump /tmp/test ---------- trace 0 ----------- vl_api_memclnt_delete_t: index: 33554432 handle: 0x108e1d3000000000 ---------- trace 1 ----------- vl_api_memclnt_create_t: name: vpp_api_test input_queue: 0x808e1d3000000000 context: 0 ctx_quota: 0 ---------- trace 2 ----------- vl_api_sw_interface_dump_t: _vl_msg_id: 61 client_index: 33554432 context: 0 name_filter_valid: 0 ---------- trace 3 ----------- vl_api_control_ping_t: _vl_msg_id: 712 client_index: 33554432 context: 0 ---------- trace 4 ----------- vl_api_cli_inband_t: _vl_msg_id: 715 client_index: 33554432 context: 0 length: 9 Change-Id: If740c861649a3a59b8cc7a777c23c3cf94b8ff87 Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
2018-02-13VOM: ACL: Add Object Model for acl ethertypeMohsin Kazmi1-0/+16
Change-Id: I2b572ebd4b7bb26381f127912a4cc0825c04fc34 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2018-02-12Improve MTU handlingNeale Ranns2-0/+36
- setting MTU on an interface updates the L3 max bytes too - value cached in the adjacency is also updated - MTU exceeded generates ICMP to sender Change-Id: I343ec71d8e903b529594c4bd0543f04bc7f370b3 Signed-off-by: Neale Ranns <neale.ranns@cisco.com>
2018-02-09GBP pluginNeale Ranns2-0/+396
Group Base Policy (GBP) defines: - endpoints: typically a VM or container that is connected to the virtual switch/router (i.e. to VPP) - endpoint-group: (EPG) a collection of endpoints - policy: rules determining which traffic can pass between EPGs a.k.a a 'contract' Here, policy is implemented via an ACL. EPG classification for transit packets is determined by: - source EPG: from the packet's input interface - destination EPG: from the packet's destination IP address. Change-Id: I7b983844826b5fc3d49e21353ebda9df9b224e25 Signed-off-by: Neale Ranns <neale.ranns@cisco.com>
2018-02-08classifier-based ACL: testcases for L2 ACLs + fix the enabling of outbound ↵Andrew Yourtchenko1-0/+633
L2 ACL There was no test coverage for the L2 ACL (other than indirect by means of ACL plugin tests), so the enabling of the outbound ACL got fumbled throughout the revisions of the refactoring. Fix both issues - the error and the lack of test coverage for L2 ACL. Change-Id: Ib7f42780ef84b4a4f70bd88d7319aeeda866cf06 Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
2018-02-08Geneve - reduce unit-test run timeGabriel Ganne1-2/+2
Reduce the number of tunnels created/destroyed to reduce the load of the tests without changing the code covered. These are functional tests, not performance tests. This reduced the test time down to 10s from 4 minutes on my machine. Change-Id: Ifcaddc0b0628a21392c5cb247196f56bc28a53a2 Signed-off-by: Gabriel Ganne <gabriel.ganne@enea.com>
2018-02-08acl-plugin: add whitelisted ethertype mode (VPP-1163)Andrew Yourtchenko2-7/+103
Currently, ACL plugin largely does not care about the ethertypes other than 0x0800 (IPv4) and 0x86dd (IPv6), the only exception being 0x0806 (ARP), which is dealt with by the MACIP ACLs. The other ethertypes in L2 mode are just let through. This adds a new API message acl_interface_set_etype_whitelist, which allows to flip the mode of a given interface into "ethertype whitelist mode": the caller of this message must supply the two lists (inbound and outbound) of the ethertypes that are to be permitted, the rest of the ethertypes are dropped. The whitelisting for a given interface and direction takes effect only when a policy ACL is also applied. This operates on the same classifier node as the one used for dispatching the policy ACL, thus, if one wishes for most of the reasonable IPv4 deployments to continue to operate within the whitelist mode, they must permit ARP ethertype (0x0806) The empty list for a given direction resets the processing to allow the unknown ethertypes. So, if one wants to just permit the IPv4 and IPv6 and nothing else, one can add their ethertypes to the whitelist. Add the "show acl-plugin interface" corresponding outputs about the whitelists, vat command, and unittests. Change-Id: I4659978c801f36d554b6615e56e424b77876662c Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
2018-02-08acl-plugin: an elog-based tracing implementation for troubleshooting the ↵Andrew Yourtchenko1-0/+3
conn cleaner threads interactions This replaces some of the early-stage commented-out printf()s with an elog-based debug collector. It is aimed to be "better than nothing" initial implementation to be available in the field. It will be refined/updated based on use. This initial code is focused on the main/worker threads interactions, hence uses just the worker tracks. This code adds a developer debug CLI "set acl-plugin session table event-trace 1", which allows to gather the events pertaining to connection cleaning. The CLI is deliberately not part of the online help, as the express declaration that the semantics/trace levels, etc. are subject to change without notice. Change-Id: I3536309f737b73e50639cd5780822dcde667fc2c Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
2018-02-07VXLAN: Allow user to specify a custom vxlan tunnel instance id.Jon Loeliger1-2/+5
If one is not selected by the user, the next available id will be allocated, thus maintaining backward compatibility. Change-Id: I4691ed0638b8072f9cfa9f20b9fe4f981e708800 Signed-off-by: Jon Loeliger <jdl@netgate.com>
2018-02-07classifier-based ACL: refactor + add output ACLAndrew Yourtchenko2-0/+68
For implementation of MACIP ACLs enhancement (VPP-1088), an outbound classifier-based ACL would be needed. There was an existing incomplete code for outbound ACLs, it looked almost exact copy of input ACLs, minus the various enhancements, trying to sync that code seemed error-prone and cumbersome to maintain in the longer run. This change refactors the input+output ACLs processing into a unified routine (thus any changes will have effect on both), and also adds the API to set the output interface ACL, with the same format and semantics as the existing input one (except working on output ACL of course). WARNING: IP outbound ACL in L3 mode clobbers the ip.* fields in the vnet_buffer_opaque_t, since the code is using l2_classify.* The net_buffer (p0)->ip.save_rewrite_length is rescued into l2_classify.pad.l2_len, and used to rewind the header in case of drop, so that ipX_drop prints something sensible. Change-Id: I62f814f1e3650e504474a3a5359edb8a0a8836ed Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
2018-02-06make test: don't test/set parameters in dockerKlement Sekera1-0/+11
Do not set UDS related system parameters if DOCKER_TEST is set to "True" as docker environment doesn't contain the necessary /proc/... entries. Change-Id: Id85e4512c7bba6b3feb6e6fd1fbe1e05aa10a341 Signed-off-by: Klement Sekera <ksekera@cisco.com>
2018-02-06BIER: fix support for longer bit-string lengthsNeale Ranns6-115/+234
Change-Id: I2421197b76be58099e5f8ed5554410adff202109 Signed-off-by: Neale Ranns <neale.ranns@cisco.com>
2018-02-05session: segment manager refactorFlorin Coras1-1/+63
- use valloc as a 'central' segment baseva manager - use per segment manager segment pools and use rwlocks to guard them - add session test that exercises segment creation - embed segment manager properties into application since they're shared - fix rw locks Change-Id: I761164c147275d9e8a926f1eda395e090d231f9a Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-02-02make test: use random seedKlement Sekera1-1/+1
This fixes a constant setting of random seed forgotten from testing. Change-Id: Ie3c4db8bb2b4b73ba33de1ffc02cb563391fd31c Signed-off-by: Klement Sekera <ksekera@cisco.com>
2018-02-02Add L3DSR feature in LB pluginHongjun Ni1-8/+36
L3DSR is used to overcome Layer 2 limitations of Direct Server Return Load Balancing. It maps VIP to DSCP bits, and reuse TOS bits to transfer it to server, and then server will get VIP from DSCP-to-VIP mapping. Please refer to https://www.nanog.org/meetings/nanog51/presentations/Monday/NANOG51.Talk45.nanog51-Schaumann.pdf Change-Id: I403ffeadfb04ed0265086eb2dc41f2e17f8f34cb Signed-off-by: Hongjun Ni <hongjun.ni@intel.com>
2018-02-01IPv4/6 reassemblyKlement Sekera13-58/+1392
Change-Id: Ic5dcadd13c88b8a5e7896dab82404509c081614a Signed-off-by: Klement Sekera <ksekera@cisco.com>
2018-01-31NAT66 1:1 mapping (VPP-1108)Matus Fabian2-0/+179
Support the 1:1 translation of source address for IPv6 Change-Id: I934d18e5ec508bf7422d796ee5f172b79c048011 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-01-31NAT44: in2out output feature skip translation for already translated packets ↵Matus Fabian1-0/+99
(VPP-1156) Change-Id: I5395245c9e49f741a949ada1f725c34f9379c249 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-01-31NAT44: Delete dynamic sessions matching new 1:1NAT (VPP-1158)Matus Fabian1-0/+31
Change-Id: Ib99b597502b8335e57ecfa122b12e2e5aa45ee1a Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-01-31NAT44: nat44_static_mapping_details protocol=0 if addr_only=0 (VPP-1158)Matus Fabian1-0/+3
Change-Id: I1e3cfc751e7657464fc850dc56ddf763df45f62e Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-01-26session: move builtin apps to their own folderFlorin Coras2-18/+12
This consolidates builtin apps under session-apps folder. It also removes duplicate builtin echo server/client implementations. Change-Id: I75ed879399c5aa9b75b1eb38b33aedf69dd8df3f Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-01-26NAT44: fix ICMP error translation for endpoint dependent sessions (VPP-1150)Matus Fabian1-0/+36
Change-Id: I85c799f28c4246884107e569a36482af10d9be9d Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-01-25NAT44: add opaque string tag to static mapping APIs (VPP-1147)Matus Fabian2-4/+29
Change-Id: I620e2081285ca8ac5c2da8efc12fe6f540ea4fd1 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-01-25NAT: nat.c refactor (split out CLI) (VPP-1140)Matus Fabian1-2/+12
Moved CLI from nat.c to nat44_cli.c Split "show nat44" to: show nat44 addresses show nat44 interfaces show nat44 static mappings show nat44 interface address show nat44 sessions detail show nat44 deterministic mappings show nat44 deterministic timeouts show nat44 deterministic sessions show nat workers Change-Id: I2d1be8941dd0e4a9e037f4a4d2cd192389beb8ed Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-01-25make test: verify that /dev/shm is big enoughKlement Sekera2-0/+31
Verify that /dev/shm size is >= 512M, which should be enough for `make test' needs. If the verification fails, try to enlarge it automatically. This helps avoid docker vpp/make test crashes (seen as SIGBUS). Change-Id: I4e23d59ff8bf8befc320fa229fb6c9bfeb809a8f Signed-off-by: Klement Sekera <ksekera@cisco.com>
2018-01-24SCTP stack (RFC4960)Marco Varlese1-0/+91
== CONTENT == * SCTP chunks definition as per RFC4960; * Helper functions to set/get values to/from the corresponding chunks; * Hooks to the session/application layers; * Complete state-machine handling; * Implementation for unexpected chunk received in a certain state (state-machine error handling) * Support for 1-single connection; * Sample application to test receive/transmit data-path; * Test to validate SCTP stack; Change-Id: I1b55c455ab400be9513f4e094dadfc3181d2ebc9 Signed-off-by: Marco Varlese <marco.varlese@suse.com>
2018-01-24Improve the error reporting for a IP multicast RPF miss.Neale Ranns1-0/+9
now we get: 00:00:04:288925: pg-input ... 00:00:04:289345: ethernet-input ... 00:00:04:289524: ip6-input ... 00:00:04:289553: ip6-mfib-forward-lookup ... 00:00:04:289584: ip6-mfib-forward-rpf entry 14 itf 2 flags Forward, 00:00:04:289754: ip6-drop UDP: 2002::1 -> ff01:2::255 tos 0x00, flow label 0x0, hop limit 64, payload length 21 UDP: 1234 -> 1234 length 21, checksum 0x90d1 00:00:04:289802: error-drop ip4-input: Multicast RPF check failed 08:36:44,517 Count Node Reason 182 ip4-input Multicast RPF check failed 8 ip6-icmp-input neighbor advertisements sent 8 ip6-icmp-input router advertisements sent 8 arp-input ARP replies sent Change-Id: I1b29cda4ec77a88db45bfb25c7473cd64bbf501a Signed-off-by: Neale Ranns <nranns@cisco.com>
2018-01-24NAT44: asymmetrical static mapping and one-armed NAT (VPP-1138)Matus Fabian1-0/+64
One-armed NAT should work for asymmetrical static mappings without adding external address to the NAT44 pool. Change-Id: Ie886b75b55c3b552d1029a50bd967625fde80f09 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-01-23For DHCP client configuration control the setting of the broadcast flag in theNeale Ranns2-4/+107
DISCOVER message sent. According to RFC2131: In the case of a client using DHCP for initial configuration (before the client's TCP/IP software has been completely configured), DHCP requires creative use of the client's TCP/IP software and liberal interpretation of RFC 1122. The TCP/IP software SHOULD accept and forward to the IP layer any IP packets delivered to the client's hardware address before the IP address is configured; DHCP servers and BOOTP relay agents may not be able to deliver DHCP messages to clients that cannot accept hardware unicast datagrams before the TCP/IP software is configured. To work around some clients that cannot accept IP unicast datagrams before the TCP/IP software is configured as discussed in the previous paragraph, DHCP uses the 'flags' field [21]. The leftmost bit is defined as the BROADCAST (B) flag. The semantics of this flag are discussed in section 4.1 of this document. The remaining bits of the flags field are reserved for future use. They MUST be set to zero by clients and ignored by servers and relay agents. Figure 2 gives the format of the 'flags' field. this changes means VPP conforms to the: "SHOULD accept and forward to the IP layer any IP packets delivered to the client's hardware address before the IP address is configured" with the caveat that VPP allows DHCP packets destined to the stanard client DHCP port to be delivered. With this enhancement the control-plane is now able to choose the setting of the broadcast flag. Change-Id: Ia4eb2c9bb1e30c29f9192facc645e9533641955a Signed-off-by: Neale Ranns <nranns@cisco.com>
2018-01-22svm: queue sub: Add conditional timed waitMohsin Kazmi2-16/+24
On reviece side svm queue only permits blocking and non-blocking calls. This patch adds timed wait blocking functionality which returns either on signal/event or on given time out. It also preserves the original behavior, so it will not hurt client applications which are using svm queue. Change-Id: Ic10632170330a80afb8bc781d4ccddfe4da2c69a Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2018-01-22NAT44: asymmetrical static mapping rule (VPP-1135)Matus Fabian2-4/+106
add option to NAT44 static mapping API/CLI to make rule asymmetrical (rule match only out2in direction) Change-Id: If262a3ff375a24d3059f0de1f1ac387a4fe09475 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-01-17LD_PRELOAD: stateless LDPDave Wallace1-0/+9
- Refactor LDP to be stateless. - Use upper bit of fd to identify tag as VCL session. - Clean up debug output. - Add VCOM config env vars for app name and sid bit. - Add VCL get/set attributes - Add VCL poll implementation. Change-Id: I4603ae88254c460a024fdb79fe91c6d1ef9bc7b9 Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
2018-01-11NAT44: asymmetrical load balancing static mapping rule (VPP-1132)Matus Fabian2-0/+117
Add option to NAT44 load balancing static mapping API/CLI to make rule asymmetrical (rule match only in out2in direction). Change-Id: I325ecef5591e4bf44ce4469a24d44fe56c3bb2e9 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-01-11Add basic support for DS-Lite CE (VPP-1059)Juraj Sloboda2-0/+115
Change-Id: Ifcca60da3f77c0a4959f98b3365c846badbdc2d0 Signed-off-by: Juraj Sloboda <jsloboda@cisco.com>
2018-01-09DVR: run L3 output featuresNeale Ranns3-22/+52
- rename l2_bridged to is_dvr. Including on the ip.api this was new in the 18.01 release so no compatability issues. - steal the free space in vnet_buffer_opaque_t for use with flags. - run the ipX-output feature arc from the DVR DPO Change-Id: I040e5976d1dbe076fcdda3a40a7804f56337ce3f Signed-off-by: Neale Ranns <nranns@cisco.com>
2018-01-09BIER: missing endian swap for imposition object in API returnNeale Ranns2-2/+7
Change-Id: Iddd754d00ace3d042336e5c2c40431566275051a Signed-off-by: Neale Ranns <neale.ranns@cisco.com>
2018-01-09test: consolidate the multiple versions of send_and_*Neale Ranns10-207/+31
Change-Id: I7fa7d0ebf73dab8264a2e5ddbd412600d78ead05 Signed-off-by: Neale Ranns <nranns@cisco.com>
2018-01-08NAT64: IPFix (VPP-1106)Matus Fabian2-26/+483
Change-Id: Ib90dc5613c9fdac0344b3bd7f163e2f7163c64d8 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2018-01-06VPP-1110 BVI reply ARP that doesn't request BVI loacl IP.zhaoqingling1-1/+13
Change-Id: I66ae618edaa12c2b4e4afe276da689673b02c9cd Signed-off-by: zhaoqingling <zhao.qingling@zte.com.cn>
2018-01-05Add support for 464XLAT NAT44 mode (VPP-1045)Juraj Sloboda2-12/+231
Change-Id: I24e7a26972bbbfcea100292b212b29ae7a349335 Signed-off-by: Juraj Sloboda <jsloboda@cisco.com>
2017-12-22tcp: add builtin server/client transfer testFlorin Coras2-2/+76
Change-Id: Iab0baabf2f27bc7ad7fbf2d2789a493752b07d8a Signed-off-by: Florin Coras <fcoras@cisco.com>
2017-12-20L2 EmulationNeale Ranns2-28/+226
L2 Emulation is a feautre that is applied to L2 ports to 'extract' IP packets from the L2 path and inject them into the L3 path (i.e. into the appropriate ip[4|6]_input node). L3 routes in the table_id for that interface should then be configured as DVR routes, therefore the forwarded packet has the L2 header preserved and togehter the L3 routed system behaves like an L2 bridge. Change-Id: I8effd7e2f4c67ee277b73c7bc79aa3e5a3e34d03 Signed-off-by: Neale Ranns <nranns@cisco.com>
2017-12-20fix kubeproxy some testsGabriel Ganne1-2/+6
* NAT46: fix test cleanup, missing del keyword * NAT66: fix kube-proxy vip, is ipv6 * add some missing kp_put_writer_lock * wipe flowtable after each unit test * Add new cli api: "test kube-proxy flowtable flush" to flushes everything * Call this new cli function after the end of each kube-proxy unit test. * same as commit b3d1b203579226ca5136b9d6a2744577d07cfcc6 for the lb plugin Change-Id: I4146f44841328ec96eb66729e3bae3d40f33e4aa Signed-off-by: Gabriel Ganne <gabriel.ganne@enea.com>
2017-12-20Translate matching packets using NAT (VPP-1069)Juraj Sloboda2-4/+87
Add API function which enables forwarding of packets not matching existing translation or static mapping instead of dropping them. When forwarding is enabled matching packets will be translated while non-matching packets will be forwarded without translation. Change-Id: Ic13040cbad16d3a1ecdc3e02a497171bef6aa413 Signed-off-by: Juraj Sloboda <jsloboda@cisco.com>
2017-12-19NAT: Twice NAT44 (VPP-969)Matus Fabian2-9/+190
Translation of both source and destination addresses and ports for 1:1 NAT session initiated from outside network (ExternalIP K8 use case). Change-Id: Ic0000497cf71619aac996d6d580844f0ea0edc14 Signed-off-by: Matus Fabian <matfabia@cisco.com>
2017-12-18Support kube-proxy data planeHongjun Ni1-0/+203
This plugin provides kube-proxy data plane on user space, which is used to replace linux kernal's kube-proxy based on iptables. The idea is largely inspired from VPP LB plugin. Currently, kube-proxy plugin supports three service types: 1) Cluster IP plus Port: support any protocols, including TCP, UDP. 2) Node IP plus Node Port: currently only support UDP. 3) External Load Balancer. Please refer to kp_plugin_doc.md for details. Change-Id: I36690e417dd26ad5ec1bd77c7ea4b8100416cac6 Signed-off-by: Hongjun Ni <hongjun.ni@intel.com>
2017-12-16PAPI: Add docstrings to unit tests.Ole Troan1-0/+17
Change-Id: I0e20100c9e2ca4e951f605a79d48c04ff47864cb Signed-off-by: Ole Troan <ot@cisco.com>
2017-12-16GRE tunnel key includes the FIB tableNeale Ranns2-2/+21
- GRE tunnels with the same src,dst addresses are not the same tunnel - Two data-plane improvements: - the cached key was never updated and so useless - no need to dereference the tunnel's HW interface to get the sw_if_index Change-Id: I2f2ea6e08c759a810b753cec22c497e921a2ca01 Signed-off-by: Neale Ranns <nranns@cisco.com>