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2020-08-13map: handle IPv6 extension headers for TCP/UDPVladimir Isaev1-2/+2
Without this patch offset for TCP/UDP headers was not calculated correctly if there is one or more IPv6 extension headers. Type: fix Signed-off-by: Vladimir Isaev <visaev@netgate.com> Change-Id: I04d6f5e42f8f072987192d6236085afbd74a4420 (cherry picked from commit 7d4cd0cf6f1a94953ef97ab885752424dea6948c)
2020-08-12map: honor pre-resolve param in map-tAlexander Chernavin6-30/+153
With this commit, forward the translated packet directly to the specified next-hop if pre-resolve param is enabled in MAP-T. Type: fix Change-Id: Ie26080c7820318c7982599577a4af6e4d01a0574 Signed-off-by: Alexander Chernavin <achernavin@netgate.com> (cherry picked from commit f145c15631ba62e798395499f83a2f8a91ae83c7) Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
2020-08-12map: Prevent IPv4 prefix spoofing during IPv6 -> IPv4Jon Loeliger2-2/+279
Prevent malicious packets with spoofed embedded IPv4 addresses by limiting the IPv6 ingress packets to known MAP-T domains. Drop spoofed packets. Add several tests that ensure spoofing isn't allowed. Type: fix Fixes: fc7344f9be Change-Id: I80a5dd10d5fe7492e3a1b04de389d649a78065e2 Signed-off-by: Jon Loeliger <jdl@netgate.com> (cherry picked from commit 65866f03d96bd41b99b1c823ea6f38cd77fac58c)
2020-08-12map: api: fix tag overflow and leakBenoît Ganne2-4/+6
The 'tag' parameter is expected to be a NULL-terminated C-string in callees: - make sure it is null-terminated in both API and CLI cases - do not allocate & copy the string into a non-NULL-terminated vector in API case - fix leak in CLI case Type: fix Change-Id: I221a489a226240548cdeb5e3663bbfb94eee4600 Signed-off-by: Benoît Ganne <bganne@cisco.com> (cherry picked from commit 3b37125bdb0251181f90a429a4532b339711cf89)
2020-08-12map: Fix a coverity MAP dead-code issue.Jon Loeliger1-3/+0
Type: fix Change-Id: I5467bbe3b25b1ea3fb44157abe6e7bfb3f191e77 Signed-off-by: Jon Loeliger <jdl@netgate.com> (cherry picked from commit 3aae3dc7acddbe2f46de785b50c3358b7d3e0acc)
2020-08-12map: Avoid null dereference in 'map show' and 'map del'Jon Loeliger1-12/+22
If a map domain is created without a tag name, inspecting the map data will segfault looking for an unset name in the so-called "domain extras" vector. Enhance "show map domain" to show all map domains. Type: fix Change-Id: Ic55662b84eec58221816da270b2ef9e89c3a31c3 Signed-off-by: Jon Loeliger <jdl@netgate.com> (cherry picked from commit 4a6d093e7ef72b06b35ffee911d35033dfde0171)
2020-08-12map: Fix inverted 'map security check enable' CLI flag.Jon Loeliger1-2/+2
Type: fix Fixes: 5a2e278a09726be627b8310e03f0522d60aafedf Change-Id: Ibdc2f0be44e382bfa4a8f3e16be8d6239d7a0ec1 Signed-off-by: Jon Loeliger <jdl@netgate.com> (cherry picked from commit acaa04a22dd8bade2eca944ddd8517961433a34f)
2019-09-30map: fix non-null-terminated C-stringBenoît Ganne1-3/+4
Type: fix Change-Id: Ia3a4693acd5eab234f60b37436c5b642b00bda46 Signed-off-by: Benoît Ganne <bganne@cisco.com> (cherry picked from commit 3c7c613cf18f7825e22190be45ea7f054efafb77)
2019-09-09api: enforce vla is last and fixed string typeOle Troan2-9/+8
Enforce that variable length fields are the last element of API messages. Add a 'fixed' version of string type, since dealing with multiple variable length strings turned out too painful for the C language bindings. The string type is now: { string name[64]; // NUL terminated C-string. Essentially decays to u8 name[64] string name[]; // Variable length string with embedded len field (vl_api_string_t) }; The latter notation could be made available to other types as well. e.g. { vl_api_address_t addresses[]; } instead of { u32 n_addr; vl_api_address_t addresses[n_addr]; }; Type: fix Change-Id: I18fa17ef47227633752ab50453e8d20a652a9f9b Signed-off-by: Ole Troan <ot@cisco.com> (cherry picked from commit e5ff5a36dd126ee57dca4e0b03da2f7704e0a4f5) Signed-off-by: Ole Troan <ot@cisco.com>
2019-08-23tests: move plugin tests to src/plugins/*/testDave Wallace1-0/+437
- Relocate plugin tests for 'make test' into src/plugins/*/test so that plugin test cases are co-located with the plugin source code. Type: refactor Ticket: VPP-1754 Signed-off-by: Dave Wallace <dwallacelf@gmail.com> Change-Id: I503e6a43528e14981799b735fa65674155713f67 (cherry picked from commit a43c93f8554ad7418e31be3791b3fb71232f60ac)
2019-07-31vppinfra: refactor test_and_set spinlocks to use clib_spinlock_tjaszha032-12/+9
Spinlock performance improved when implemented with compare_and_exchange instead of test_and_set. All instances of test_and_set locks were refactored to use clib_spinlock_t when possible. Some locks e.g. ssvm synchronize between processes rather than threads, so they cannot directly use clib_spinlock_t. Type: refactor Change-Id: Ia16b5d4cd49209b2b57b8df6c94615c28b11bb60 Signed-off-by: Jason Zhang <jason.zhang2@arm.com> Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com> Reviewed-by: Lijian Zhang <Lijian.Zhang@arm.com>
2019-07-30vppinfra: refactor use of CLIB_MEMORY_BARRIER ()jaszha031-2/+2
All instances of test_and_set locks used the following sequence to release the locks: CLIB_MEMORY_BARRIER (); p->lock = 0; // p is a generic struct with a TAS lock Use clib_atomic_release to generate more efficient assembly code. Type: refactor Change-Id: Idca3a38b1cf43578108bdd1afe83b6ebc17a4c68 Signed-off-by: Jason Zhang <jason.zhang2@arm.com> Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com> Reviewed-by: Lijian Zhang <Lijian.Zhang@arm.com>
2019-07-30vppinfra: conformed spinlocks to use CLIB_PAUSEjaszha031-2/+3
Modified test-and-set spin locks to call CLIB_PAUSE () when spinning for code consistency. Decreases the memory bandwidth consumed. Type: fix Change-Id: I1cca4f87f44f23f257c7a35466cd2e7767072f51 Signed-off-by: Jason Zhang <jason.zhang2@arm.com> Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com> Reviewed-by: Lijian Zhang <Lijian.Zhang@arm.com>
2019-07-23vlib: address vlib_error_t scaling issueDave Barach1-1/+1
Encoding the vpp node index into the vlib_error_t as a 10-bit quantity limits us to 1K graph nodes. Unfortunately, a few nodes need 6 bit per-node error codes. Only a very few nodes have so many counters. It turns out that there are about 2K total error counters in the system, which is (approximately) the maximum error heap index. The current (index,code) encoding limits the number of interfaces to around 250, since each interface has two associated graph nodes and we have about 500 "normal, interior" graph node This patch adds an error-index to node-index map, so we can store error heap indices directly in the vlib_buffer_t. Type: refactor Change-Id: I28101cad3d8750819e27b8785fc0cf71ff54f79a Signed-off-by: Dave Barach <dave@barachs.net>
2019-07-19fib: FIB Entry trackingNeale Ranns1-13/+4
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>
2019-07-08map gbp papi: match endianess of f64Paul Vinciguerra1-5/+3
clib_net_to_host_f64, clib_host_to_net_f64 are now implemented as '=', https://gerrit.fd.io/r/#/c/20406/ set papi to match. - all f64 api references are now wrapped with clib_net_to_host_f64 or clib_host_to_net_f64. IEEE f64 endianess is not defined. If clib_net_to_host_f64 and clib_host_to_net_f64 are later defined in VPP as big-endian, it is a single character change in the papi vpp_serializer. Note: This breaks the api in a manner that would not be detected by the flag day initiative. The scope is small. This only impacts map.api, which applied the u64 transformation, while the gbp api uses '='. The implementation of "=" raises issues for the papi socket implementation if used between systems of differing endianess. See Vratko's comments. - Added get_f64_endian_value() to api to allow client to verify endianess of f64's. Type: fix Depends-on: https://gerrit.fd.io/r/#/c/20484/ Change-Id: I00fc64a6557ba0190398df211aa0ea5c7eb101df Signed-off-by: Paul Vinciguerra <pvinci@vinciconsulting.com>
2019-06-26api: refactor format_vl_api_prefix_t return keysPaul Vinciguerra1-6/+6
format_vl_api_prefix_t returns a dict with keys 'address' and 'address_length', but other format_vl_api_prefix functions return a dict with 'prefix', and 'len'. Refactor all format_vl_api_prefix_t to return consistent keys 'address' and 'len'. Type: refactor Change-Id: I5f9558fc2da8742a303266e011102f5b2db80aad Signed-off-by: Paul Vinciguerra <pvinci@vinciconsulting.com>
2019-06-26api: Remove the inlines file and replace with library functionsNeale Ranns1-1/+0
using inlines exposes the users to the internal data types used by VPP, namely vec.h. This file does not compile with a C++ compiler. Type: feature Change-Id: I1544fdd9eae998309f865df61df78571bdb96903 Signed-off-by: Neale Ranns <nranns@cisco.com>
2019-06-18api: string type to convert to vectorOle Troan3-23/+18
Previous use of strndup() required user to remember to call free(). Now return a vector pointing directly to the API message string. Of course user must remember to copy the string out if lifetime is longer than API message lifetime. Change-Id: Ib5e2b3d52d258e1a42ea9ea9a9e04abbe360e2bf Type: fix Signed-off-by: Ole Troan <ot@cisco.com>
2019-05-31tools: FEATURE.yaml meta-data infrastructureOle Troan1-0/+13
Add tooling for feature metadata configuration files. The main tool is in src/scripts/fts.py make checkfeaturelist to validate against schema. make featurelist to dump all feature lists to stdout. Example feature definition: name: IP in IP tunnelling maintainer: Ole Troan <ot@cisco.com> features: - IPv4/IPv6 over IPv4/IPv6 encapsulation: - Fragmentation and Reassembly - Configurable MTU - Inner to outer Traffic Class / TOS copy - Configurable Traffic Class / TOS - ICMPv4 / ICMPv6 proxying - 6RD (RFC5969): - Border Relay description: "Implements IP{v4,v6} over IP{v4,v6} tunnelling as described in RFC2473. This module also implement the border relay of 6RD (RFC5969)." state: production properties: [API, CLI, STATS, MULTITHREAD] missing: - Tunnel PMTUD - Tracking of FIB state for tunnel state - IPv6 extension headers (Tunnel encapsulation limit option) JSON schema is embedded in fts.py Example markdown: https://github.com/otroan/scratch/blob/master/features.md Change-Id: I903b4ee6b316a9378c259e86dc937092e5d4b7da Type: make Signed-off-by: Ole Troan <ot@cisco.com>
2019-05-29map: Use vl_api_string macros.Paul Vinciguerra2-27/+9
* Add optional tag to api call in tests * Add test for map_domain_dump() for api code coverage. Type: fix Change-Id: I2f7784aecdca4bf9e94de3319f959786e3d2c607 Signed-off-by: Paul Vinciguerra <pvinci@vinciconsulting.com>
2019-05-03plugins: clean up plugin descriptionsDave Wallace1-1/+1
- Make plugin descriptions more consistent so the output of "show plugin" can be used in the wiki. Change-Id: I4c6feb11e7dcc5a4cf0848eed37f1d3b035c7dda Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
2019-03-22MAP: Crush Coverity ComplaintJon Loeliger1-1/+1
Change-Id: I965229f5bf8fcde9176357536a23ba8056542919 Signed-off-by: Jon Loeliger <jdl@netgate.com>
2019-03-19MAP: Add optional user-supplied 'tag' field in MAPs.Jon Loeliger4-14/+135
Like other entities, allow an arbitrray user-supplied 'tag' field to be place on created MAP domains. It is also later returned with the MAP details. You might be thinking "User assigned MAP name" here. As the MAP domain structure was at the limit of a cacheline size, introduce a parallel "extra data" vector with non-essential domain information in it. Change-Id: Icc12b64cc4cb3e040c9a475908b19f6abaf4c293 Signed-off-by: Jon Loeliger <jdl@netgate.com>
2019-03-11VPP-1533: Deleting a non-existent pre-resolved MAP next-hop causes VPP core dumpOle Troan1-7/+10
Change-Id: I6f0830b786ac46c69c867f73b044aab174e6210b Signed-off-by: Ole Troan <ot@cisco.com>
2019-02-26Remove fake MAP domain 0 entry.Jon Loeliger1-7/+1
Problematic: - It didn't have its counters initialized, so vpp crashed during a "show map stat" - Not all the tests for "are there any domains" actually accounted for the fake entry at pool slot 0. - Dump details happily returned its bogus entry. Change-Id: I57aaa9f63917686334fd4a9fa7bc80044bf1718c Signed-off-by: Jon Loeliger <jdl@netgate.com>
2019-02-02VPP-1543: show map stats crash when not configured.Ole Troan1-1/+1
Change-Id: I4c8bc3fb057d57339ce282a31b0bb70ad16dd03e Signed-off-by: Ole Troan <ot@cisco.com>
2019-01-20minor fixup in map doc (people -> seconds)Jim Thompson1-1/+1
Change-Id: I151c1afac2133ad32ad7779a59fffafee4b9de60 Signed-off-by: Jim Thompson <jim@netgate.com>
2019-01-07MAP: Prevent duplicate MAP-E/T graph nodes.Jon Loeliger3-0/+35
Change-Id: I6031f3f9cfa048a901a8424d33d47679115c2eb3 Signed-off-by: Jon Loeliger <jdl@netgate.com>
2018-12-27MAP: Install lpm.h as map.h references it.Jon Loeliger1-0/+1
Change-Id: I97c6475920b7f7028c2bb1117ff9e5f629a54b44 Signed-off-by: Jon Loeliger <jdl@netgate.com>
2018-12-21MAP: Convert from DPO to input feature.Jon Loeliger11-477/+582
Change-Id: I25c86aea23dff19656449b23133db27b1f062ac0 Signed-off-by: Jon Loeliger <jdl@netgate.com> Signed-off-by: Ole Troan <ot@cisco.com>
2018-12-20Trivial: fix src/plugins/map/test.c memory leakPaul Vinciguerra1-1/+2
Change-Id: Iabc8bcddd1b30a3b14f3cfd13b3c0b77a63028d6 Signed-off-by: Paul Vinciguerra <pvinci@vinciconsulting.com>
2018-12-19MAP: Add API support for MAP input feature.Jon Loeliger4-0/+216
Change-Id: I336919a1d3a9d1b404e375a30575cce5e5335137 Signed-off-by: Jon Loeliger <jdl@netgate.com>
2018-12-18MAP: Add longest matching prefix (LPM) data structuresOle Troan3-0/+220
In preparation for adding input feature MAP support, as opposed to going via the FIB, add MAP's own LPM data structures. Change-Id: Ie363f0961b0ac9dde2a0fb76cb0c58c904876974 Signed-off-by: Ole Troan <ot@cisco.com>
2018-12-18MAP: Remove dual loop in MAP-T in preparation for refactor.Ole Troan3-587/+0
Change-Id: I3c77cadaa7b677073af00407f368bd48d703fdac Signed-off-by: Ole Troan <ot@cisco.com>
2018-12-17MAP: Encode ht-ratio as f64 for API.Jon Loeliger1-2/+2
Change-Id: I5f05f112e8002e8b57db5c7a215ca4778ab6f76a Signed-off-by: Jon Loeliger <jdl@netgate.com>
2018-12-13MAP: Fix inverted 'is_add'/'is_del' flag in map_pre_resolve() call.Jon Loeliger1-1/+1
Change-Id: I82e95358a4d710f1ddd4c8de584f03798e2b85f1 Signed-off-by: Jon Loeliger <jdl@netgate.com>
2018-12-13make build failure.Paul Vinciguerra1-1/+1
[84/597] Building C object vnet/CMakeFiles/vnet.dir/ip/ip_types_api.c.o FAILED: ccache /usr/lib/ccache/cc -DWITH_LIBSSL=1 -Dvnet_EXPORTS -I/vpp/src -I. -Iinclude -march=corei7 -mtune=corei7-avx -g -O2 -DFORTIFY_SOURCE=2 -fstack-protector -fPIC -Werror -fPIC -Wno-address-of-packed-member -Wall -MMD -MT vnet/CMakeFiles/vnet.dir/ip/ip_types_api.c.o -MF vnet/CMakeFiles/vnet.dir/ip/ip_types_api.c.o.d -o vnet/CMakeFiles/vnet.dir/ip/ip_types_api.c.o -c /vpp/src/vnet/ip/ip_types_api.c /vpp/src/vnet/ip/ip_types_api.c: In function 'ip_address_union_encode': /vpp/src/vnet/ip/ip_types_api.c:70:13: error: incompatible type for argument 1 of 'memcpy' memcpy (out->ip6, &in->ip6, sizeof (out->ip6)); ^ In file included from /usr/include/string.h:635:0, from /vpp/src/vppinfra/string.h:55, from /vpp/src/vppinfra/mem.h:55, from /vpp/src/vppinfra/vec.h:42, from /vpp/src/vppinfra/error.h:53, from /vpp/src/vppinfra/hash.h:41, from /vpp/src/vnet/ip/ip.h:43, from /vpp/src/vnet/ip/ip_types_api.h:23, from /vpp/src/vnet/ip/ip_types_api.c:16: /usr/include/x86_64-linux-gnu/bits/string3.h:50:42: note: expected 'void * restrict' but argument is of type 'vl_api_ip6_address_t {aka struct _vl_api_ip6_address}' __NTH (memcpy (void *__restrict __dest, const void *__restrict __src, ^ /vpp/src/vnet/ip/ip_types_api.c:72:13: error: incompatible type for argument 1 of 'memcpy' memcpy (out->ip4, &in->ip4, sizeof (out->ip4)); ^ In file included from /usr/include/string.h:635:0, from /vpp/src/vppinfra/string.h:55, from /vpp/src/vppinfra/mem.h:55, from /vpp/src/vppinfra/vec.h:42, from /vpp/src/vppinfra/error.h:53, from /vpp/src/vppinfra/hash.h:41, from /vpp/src/vnet/ip/ip.h:43, from /vpp/src/vnet/ip/ip_types_api.h:23, from /vpp/src/vnet/ip/ip_types_api.c:16: /usr/include/x86_64-linux-gnu/bits/string3.h:50:42: note: expected 'void * restrict' but argument is of type 'vl_api_ip4_address_t {aka struct _vl_api_ip4_address}' __NTH (memcpy (void *__restrict __dest, const void *__restrict __src, ^ /vpp/src/vnet/ip/ip_types_api.c: At top level: cc1: error: unrecognized command line option '-Wno-address-of-packed-member' [-Werror] cc1: all warnings being treated as errors [84/597] Building C object vnet/CMakeFiles/vnet.dir/ip/ip4_forward.c.o ninja: build stopped: subcommand failed. Makefile:691: recipe for target 'vpp-build' failed make[1]: *** [vpp-build] Error 1 make[1]: Leaving directory '/vpp/build-root' Makefile:394: recipe for target 'test' failed make: *** [test] Error 2 DBGvpp# show cpu Model name: Intel(R) Core(TM) i7-4870HQ CPU @ 2.50GHz Microarchitecture: Haswell (Crystalwell) Flags: sse3 ssse3 sse41 sse42 avx avx2 aes invariant_tsc Base frequency: 2.49 GHz DBGvpp# show version verbose Version: v19.01-rc0~447-g3be662f Compiled by: vagrant Compile host: vpp Compile date: Mon Dec 10 14:55:24 PST 2018 Compile location: /vpp Compiler: GCC 5.4.0 20160609 Current PID: 14104 Change-Id: I6ff03bc5ad1c3517256e244b6986e9a1507a3349 Signed-off-by: Paul Vinciguerra <pvinci@vinciconsulting.com>
2018-12-11MAP: Add API support for setting parameters.Jon Loeliger4-212/+648
Change-Id: Ic67073e1f2ebe54bee5cb96a951eb92a28b1de06 Signed-off-by: Jon Loeliger <jdl@netgate.com>
2018-12-06API: Change ip4_address and ip6_address to use type alias.Ole Troan1-1/+1
Change-Id: Id8669bbadd1d6b2054865a310a654e9b38d1667d Signed-off-by: Ole Troan <ot@cisco.com>
2018-11-29MAP: Use bool type in map.api instead of u8.Ole Troan1-5/+5
Change-Id: I4e40bb6d6bf274a27892053f37aeeb81a7278965 Signed-off-by: Ole Troan <ot@cisco.com>
2018-11-22MAP: Use explicit address/prefix types in APIOle Troan4-540/+26
Change-Id: Ic751fecc4a060eedcdb9eaf5d02e1416c838fd63 Signed-off-by: Ole Troan <ot@cisco.com>
2018-11-22Revert "Add support for MAP-T CE (VPP-1058)"Ole Troan5-442/+163
This reverts commit 0ae15ed43aaa600a75ca4c154bc62478820c00b4. Re-add MAP CE support later. This patch polluted the code with too many if (ce) ... Change-Id: Ia0ffd6fdb452aa5d30abec57772c17fc16fb0dbd Signed-off-by: Ole Troan <ot@cisco.com>
2018-11-14Remove c-11 memcpy checks from perf-critical codeDave Barach4-18/+16
Change-Id: Id4f37f5d4a03160572954a416efa1ef9b3d79ad1 Signed-off-by: Dave Barach <dave@barachs.net>
2018-10-23c11 safe string handling supportDave Barach3-13/+13
Change-Id: Ied34720ca5a6e6e717eea4e86003e854031b6eab Signed-off-by: Dave Barach <dave@barachs.net>
2018-10-19vppinfra: add atomic macros for __sync builtinsSirshak Das1-4/+4
This is first part of addition of atomic macros with only macros for __sync builtins. - Based on earlier patch by Damjan (https://gerrit.fd.io/r/#/c/10729/) Additionally - clib_atomic_release macro added and used in the absence of any memory barrier. - clib_atomic_bool_cmp_and_swap added Change-Id: Ie4e48c1e184a652018d1d0d87c4be80ddd180a3b Original-patch-by: Damjan Marion <damarion@cisco.com> Signed-off-by: Sirshak Das <sirshak.das@arm.com> Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com> Reviewed-by: Ola Liljedahl <ola.liljedahl@arm.com> Reviewed-by: Steve Capper <steve.capper@arm.com>
2018-09-28MAP: Add check for well known ports.Ole Troan1-0/+8
And more unit-tests. Change-Id: I4667d82d928b7ba8d96b5a5648d464115b3ed216 Signed-off-by: Ole Troan <ot@cisco.com>
2018-09-27MAP: Correctly print ea-bits-len in map commands.Ole Troan1-1/+1
Change-Id: I17b19875547cd6056aaf8f8fde439caa8e42d274 Signed-off-by: Ole Troan <ot@cisco.com>
2018-09-27MAP: 64-bit DMROle Troan2-17/+15
Change-Id: I261e11f1006039e4a4019fec2fd3271763ae476a Signed-off-by: Ole Troan <ot@cisco.com>
2018-09-27IPIP and IPv6 fragmentationOle Troan4-19/+4
- Error where ICMPv6 error code doesn't reset VLIB_TX = -1 Leading to crash for ICMP generated on tunnelled packets - Missed setting VNET_BUFFER_F_LOCALLY_ORIGINATED, so IP in IPv6 packets never got fragmented. - Add support for fragmentation of buffer chains. - Remove support for inner fragmentation in frag code itself. Change-Id: If9a97301b7e35ca97ffa5c0fada2b9e7e7dbfb27 Signed-off-by: Ole Troan <ot@cisco.com>