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2021-10-08Add flow test suitesxinfeng zhao1-0/+109
The comms DDP package needs to be installed to support all flow protocols Signed-off-by: xinfeng zhao <xinfengx.zhao@intel.com> Change-Id: I6ab1bd8beb9edb8c9889a0ed9a999080ca3cef3d
2021-06-17Traffic scripts: Move valid_ipv* to a libraryVratko Polak6-158/+63
No need to implement the same two functions in 5 places. Change-Id: I7bbcfaba18030a0520aaef5dcf06ed155bcf806b Signed-off-by: Vratko Polak <vrpolak@cisco.com>
2021-06-17Traffic scripts: Fix docstringsVratko Polak5-10/+0
The IP address checking functions do not raise the exceptions listed, they except them and return False. Change-Id: I74e52b65bac99c8ca8679d4cc6395067ccc6a961 Signed-off-by: Vratko Polak <vrpolak@cisco.com>
2021-06-14FIX: vpp_device ignore packets listpmikus9-27/+97
Signed-off-by: pmikus <pmikus@cisco.com> Change-Id: Ifda8fcb102661e7c585bc5fe3a16113ae629d516
2021-06-14FIX: eval expressionpmikus2-0/+4
Signed-off-by: pmikus <pmikus@cisco.com> Change-Id: I746a40af0a051978706e7c696d391a051133145f
2021-06-10FIX: Pylint reducepmikus62-162/+192
Signed-off-by: pmikus <pmikus@cisco.com> Change-Id: I909942dbb920df7f0fe15c0c92cda92c3cd8d8ad
2021-06-10FIX: Add ICMPv6MLReport2 maskingpmikus9-24/+83
Signed-off-by: pmikus <pmikus@cisco.com> Change-Id: I1183a0ffd13c6926b3963b78630954bb6356133b
2021-06-10Infra: vpp_device -> Ubuntu 20.04pmikus1-1/+5
Signed-off-by: pmikus <pmikus@cisco.com> Change-Id: If24c385b93e1ba310ea258984c97494b4cab467c
2021-06-01ASTF: Fix syntax error in stopVratko Polak1-2/+2
When ASTF suites were introduced, they already edited [0] actions to avoid explicit stop. Then a refactor [1] introduced the syntax error, but as stop never run, we didnot see it as a failure. Finally another refactor [2] caused the stop to be called again, exposing the syntax error. As a related issue, pylint script was not updated to check files in GPL directory until [3]. [0] https://gerrit.fd.io/r/c/csit/+/28205/8/tests/vpp/perf/ip4/2n1l-10ge2p1x710-ethip4udp-ip4base-h1024-p63-s64512-ndrpdr.robot#84 [1] https://gerrit.fd.io/r/c/csit/+/28208/179/GPL/tools/trex/trex_astf_stop.py#102 [2] https://gerrit.fd.io/r/c/csit/+/32030/37/resources/libraries/robot/performance/performance_utils.robot#518 [3] https://gerrit.fd.io/r/c/csit/+/32504 Change-Id: Ibd20b43cb263170d9f17255ff1bcd20f09c42cb5 Signed-off-by: Vratko Polak <vrpolak@cisco.com>
2021-03-26STL traffic: Use the sleep+stop logicVratko Polak2-21/+33
+ PPS limit for AWS set to 1.2 Mpps. + The logic is very similar to that one in ASTF driver. + This helps for testbeds with high duration stretching (e.g. AWS). + Difference: No transaction scale, and we deal with floats. + Update loss counting to count unsent packets as lost. + Also count "unsent" transactions for other transaction types. + If nonzero, log the number of unsent packets/transactions. + Make STL and ASTF time overhead constant (called delay) configurable. + Subtract delay from approximated_duration, also for ASTF. Change-Id: I6ee6aa6fba4f110ba1636e1b0ff76cac64383e33 Signed-off-by: Vratko Polak <vrpolak@cisco.com>
2021-03-16Perf: Bump T-Rex to 2.88pmikus7-7/+7
+ Mellanox 4.6 is not for Ubuntu 20.04 + Mellanox for ubuntu 20.04 is 4.9+ + T-Rex 2.86 is not for Mellanox 4.6+ + T-Rex for Mellanox 5.2 is 2.88+ ================================== = Bump Signed-off-by: pmikus <pmikus@cisco.com> Change-Id: I902dfc2a43e6718b385e89f31a34260e09d61bd3
2021-02-26IPsec: add 2n crypto udir perf testsJuraj Linkeš12-0/+1261
Add unidirectional 2n crypto tests. Only one direction can be tested on a 2 node topology, since we can't use the same interface for both encrypted and unencrypted traffic. Add the following tests: * {n}tnlsw-ip4base-int ndrpdr tests * {n}tnlsw-1atnl-ip4base-int reconf tests * {n}tnlswasync-scheduler-ip4base-int ndrpdr tests Where n is the number of tunnels: 1, 4, 40, 400, 1000, 5000, 10000, 20000, 40000, 60000 for the first two 1, 2, 4, 8 for the async scheduler tests All of these with the following ecryption-auth algorithms: aes128gcm aes256gcm aes128cbc-hmac256sha aes128cbc-hmac512sha Also add the corresponding trex profiles: trex-stl-2n-ethip4-ip4dst{n}-udir.py Where n is the number of tunnels listed above. The profiles are shared among the tests. Change-Id: I22bb46e6ad59801581a78aa19310bee8a5293e56 Signed-off-by: Juraj Linkeš <juraj.linkes@pantheon.tech>
2021-02-19Add test suites for crypto sw scheduler engineYulong Pei2-0/+270
This patch is to add test suites for vpp plugin crypto_sw_scheduler, IPsec sync mode is to do crypto and packet forward work in same worker cores, crypto_sw_scheduler can schedule crypto work to other async crypto cores to improve whole crypto processing capability. This test suites configure fixed 1 rx queues per port, then measure IPsec performance with 1, 2, 3 crypto cores. This patchset include 1, 2, 4, 8 ipsec tunnels test cases. +Vratko help to change to count total physical cores instead of previous only count crypto cores in test cases. Change-Id: I0e67182e3d13273890a23703d838101900e25126 Signed-off-by: Yulong Pei <yulong.pei@intel.com> Signed-off-by: Vratko Polak <vrpolak@cisco.com> Signed-off-by: pmikus <pmikus@cisco.com>
2021-02-03UDP_PPS: Ensure keepalive is long enoughVratko Polak5-10/+10
Previously, it was long enough for the current performance, but not long enough for the theoretical worst case. See https://gerrit.fd.io/r/c/csit/+/29803/9/docs/report/introduction/methodology_nat44.rst#293 Change-Id: I3f57a834c77d93b38bca81fdbb714a6374b81bae Signed-off-by: Vratko Polak <vrpolak@cisco.com>
2021-01-20Add suites with randomized ip6 profilesVratko Polak6-16/+25
+ Replace pair of traffic profiles (2n and 3n) with single nodeless one. + Compared to incremental suites, randomized ones add IP6_RND tag. Change-Id: I2f0dfc9e04bbcd0f88e95b92edf2da2c73faaab6 Signed-off-by: Vratko Polak <vrpolak@cisco.com>
2021-01-18Random flows: Use seeds again and increase limit.Vratko Polak3-45/+54
TRex does mix seeds when distributing over workers, but it is multiplicative [0], so zero is the only bad value. Limit restricts the cycle length of PRNG (by resetting [1] the seed). We want the cycle as long as possible. [0] https://github.com/cisco-system-traffic-generator/trex-core/blob/v2.73/src/stx/stl/trex_stl_stream_vm.h#L1616 [1] https://github.com/cisco-system-traffic-generator/trex-core/blob/v2.73/src/stx/stl/trex_stl_stream_vm.h#L313-L314 Change-Id: I33a29496f0853ef60d592c988f81a9d1109b5878 Signed-off-by: Vratko Polak <vrpolak@cisco.com>
2021-01-14perf: GENEVE tunnel test, l3 modeJan Gelety7-12/+1403
Jira: CSIT-1768 Change-Id: I888ae1a5754fa07297d4cdf65c2be0e3e49d89a5 Signed-off-by: Jan Gelety <jgelety@cisco.com>
2021-01-13Add 3n ip4-rnd testsVratko Polak3-0/+0
+ Rename traffic profiles to avoid mentioning number of nodes. + Improve 2n rnd suite documentation slightly. Change-Id: I82d6fb6a99133163a58d56f2acf8a7b9568ee77c Signed-off-by: Vratko Polak <vrpolak@cisco.com>
2021-01-12License: Wrap GPL block to 80 charactersVratko Polak184-367/+551
The original license block was adapted from https://wiki.fd.io/view/TSC/Proposed_Header_Python_Test_Scripts resulting in a line longer than 80 chars, but those are reported (although not blocked) by tox verify job. As the text from wiki was not used in verbatim (it uses c-style comment block), minor formatting change like this should not be a big deal. + Bump copyright year. Change-Id: I55e3a0232639b448b1a6d7b1f3af84d903a8d0a5 Signed-off-by: Vratko Polak <vrpolak@cisco.com>
2021-01-11tests: add 2n1l l2 acl tests, update 2n-tx2 specsJuraj Linkeš1-0/+170
Modify initialize L2BD ACL keywords to be usable for both 2-node and 3-node topologies and update testsuites accordingly. Add the missing macip T-rex profile. Add classifier tests to 2n-tx2 job specs. Change-Id: I17b84b8fc18ef9a6f275ae0238a0665ac2017f01 Signed-off-by: Juraj Linkeš <juraj.linkes@pantheon.tech>
2020-12-21fix: geneveJan Gelety1-2/+2
Change-Id: I23541e1c07a42b4baa560c343ffeed3b963fe694 Signed-off-by: Jan Gelety <jgelety@cisco.com>
2020-12-16API: deprecated IPSEC APIsJan Gelety1-6/+9
Jira: CSIT-1597 + add ipsec_sa tear down action Change-Id: I4d1e6f26c14e61e8ddc6f29fbf5528a034c84eb0 Signed-off-by: Jan Gelety <jgelety@cisco.com>
2020-12-03vpp-device: GENEVE tunnel test, l3 modeJan Gelety3-2/+352
Jira: CSIT-1769 Change-Id: I98510cd8e627d7347f77d0032b7bac28f2e36c61 Signed-off-by: Jan Gelety <jgelety@cisco.com>
2020-12-08Revert "vpp-device: GENEVE tunnel test, l3 mode"Peter Mikus3-352/+2
This reverts commit a9f54ca5080aeef17686f300a6807bf9b46b7c90. Reason for revert: DO NOT MERGE BROKEN TESTS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! https://logs.fd.io/production/vex-yul-rot-jenkins-1/csit-vpp-device-master-ubuntu1804-1n-skx/9918/archives/log.html.gz Change-Id: I2ce2970a43e5dd7487eeb54d1ccbb149e06cf8fa Signed-off-by: pmikus <pmikus@cisco.com>
2020-12-03vpp-device: GENEVE tunnel test, l3 modeJan Gelety3-2/+352
Jira: CSIT-1769 Change-Id: I0ab906966f760b809b8431530c010a8f0835d62c Signed-off-by: Jan Gelety <jgelety@cisco.com>
2020-11-18T-Rex: 2.86pmikus7-7/+7
Signed-off-by: pmikus <pmikus@cisco.com> Change-Id: Id56b87ab868f2897a6563914b0beca2acc25e706
2020-11-12Switch licenses in GPL directoryVratko Polak185-554/+2535
To be merged after this completes: https://wiki.fd.io/view/TSC/Relicensing_Procedure Change-Id: I003e53a620a5f82ba2bcc65b12f9c84ae92264ef Signed-off-by: Vratko Polak <vrpolak@cisco.com>
2020-11-12Adding Nidhyanandhan Arumugam to relicense listEd Warnicke1-0/+1
Nidhyanandhan Arumugam was employed by Cisco as a contractor for the work he did in CSIT. Change-Id: Ie6cb06859b47f0ac77f6c7f42928fc742f3deda0 Signed-off-by: Ed Warnicke <hagbard@gmail.com>
2020-11-10ASTF: Lessen L7 processing in UDP_CPS profilesVratko Polak5-40/+30
Change-Id: I8b154156120821adb24273db2a232fa82200c0fe Signed-off-by: Vratko Polak <vrpolak@cisco.com>
2020-10-29Support existing test types with ASTFVratko Polak24-268/+1513
+ Add UDP_CPS, TCP_CPS, UDP_PPS and TCP_PPS suites. + Update existing cps traffic profiles. + Add missing traffic profiles. + UDP: + Single burst of 32 packets was confirmed as safe enough for TRex. + Maybe 64 could work, but not enough testing for that. + Multiple bursts have lead to reduced TRex performance, as overlaping bursts (from different client instances) tend to fill up the buffers. + TCP: + Data size set to 11111 bytes, completely arbitrarily. + Results look reasonable, so I have kept that. - MSS not set at all - No tested support for frame size other than 64B. - Frame size does not even factor into TCP profiles. + So other frame sizes are skipped in autogen. + Update tags in related suites. - HOSTS_{n} and SRC_USER_{n} should be unified. - Questionable clarification on difference between IP4BASE and SCALE. + Add NAT state resetters to tests that need them. + Resetter is called (if set) before each measurement. + If ramp-up is detected, resetter is not set. + Rename "mult" argument to "multiplier". + Abstracted from packets to transactions. + Transaction corresponds to profile. + TRex multiplier argument sets target rate in transactions per second. + The familiar STL traffic: + Bidirectional is considered to be 2 packets per transaction. + Unidirectional is considered to be 1 packet per transaction. + The newer ASTF traffic: + 4 subtypes, each has different number of packets per transaction. + For max rate computation: + Packets in the more numerous direction are considered. + Rely on TRex reported traffic duration for ASTF: + Use the server side value. - Client side value is higher by an overhead. - TRex is not sending traffic during that time. + Remove delays from traffic profiles. - Those delays would increase the reprted traffic time. + Support for scale lmited trials. + Only for ASTF profiles, each ASTF profile has limited scale. + Scale defined in suite variables. + For TRex to send all transactions provided duration value is ignored. + The appropriate value is computed in TrafficGenerator. + An ad-hoc time constant is added to match the TRex client side time overhead. + The profile driver receives the computed duration. + Measurement for PLRsearch add a sleep if the computed duration is smaller. + Alternative argument for search algos if scale is limited. + Both need higher timeout to accomodate big scales. + MLRsearch can afford fewer phases. + Added a parameter to optionally shorten the duration. + Use short duration for runtime stats trial and failure stats trial. + Use very large keepalive values in udp profiles to avoid ka packets. + No polling in ASTF profile driver. - Polling could eliminate the time overhead value. + But polling proved to introduce some loss, affecting the results. + Handle duration stretching in ASTF by stopping traffic. + The stop has several steps so that: + The traffic is really stopped entirely. + Late packets do not count (maybe as errors). + Stats are preserved to read for results (and cleared afterwards). + Several quantities added to ReceiveRateMeasurement: + Original target duration is preserved (algos need that). + Input estimate (tps) for early search iterations. + Output estimate (maybe pps) for MRR output. + Strict result (unsent counts as loss) for NDR. + Use L2 counters (opackets, ipackets) where possible. - TRex has trouble processing packets for the L7 ones at high loads. + Remove warmup from profile drivers and keywords. + Suites should call "Send ramp-up traffic" explicitly if needed. + Added parsing for few more counters. + Both to use in formulas or just for debug purposes. - Only 64B cases in autogen, framesize support to be added later. + Latency streams during search can be enabled via PERF_USE_LATENCY env var. + MLRsearch improvments: + Rename argument names to min_rate and max_rate. + Use relative receive rate in initial phase. + PLRsearch improvements: + Careful computation when output (pps) does not match input (tps). + Use geometric distribution (instead of Poisson). + Helps agains math errors. + This should improve estimate stability. - But in practice big losses still lead to significant jumps. + Traffic generator improvements: + send_traffic_on_tg now calls the full set_rate_provider_defaults. + _send_traffic_on_tg_internal for the logic without provider defaults. + As the internal function is re-used by measure() without affecting defaults. + Move _parse_traffic_results just before get_measurement_result. + As the latter uses fields set bu the former, it is now easier to read. + Multiple sources for approximate duration. + Tried from more precise to more available. + Includes logic for _pps tests (added in later change). + Move explicit type conversions to earlier occurences. + Profile driver output field uses semicolons to simplify parsing. + Performance Robot lib file split to several smaller ones. + performance_actions.robot: + Hosts Additional Statistics Action For * keywords. + performance_display.robot: + Hosts keyword for displaying and verifying results. + Change test message to use the correct unit (pps or cps). + performance_limits.robot renamed to performance_vars.robot + Added many keywords, mostly for accessing test variables. + Moved variables for Policer into a new keyword there. + Some keywords need sophisticated logic. - Other are basically Get Variable Value. + But in future more logic can be added, without editing callers. + Documentation for the new keywords acts as a documentation for test variables. + performance_utils.robot has the rest. + Eliminated arguments if the value is in test variable. + Small improvements to documentation. - Still not enough cleanup with respect to arguments and test variables. + Keywords are sorted alphabetically now in each one. + Suites: + Unified variables table: + No colons in comments. + ${n_hosts}, ${n_ports} and use them instead hardcoded numbers. + Add -cps to existing cps suite names. + Remove "trial data overwrite". + Compute max rate as in STL suites. + Each NAT suite has ip4base suite to compare results to. - Those act as indirect TRex calibration. - VPP does not lose packets in those. + Latency in ASTF suites is disabled hard. - As we do not support latency in ASTF profiles yet. + Unidirectional tests governed by suite variable, not an argument. + Write long argument lists vertically. + Prefer to use argument names. + In Python, also the last argument is followed by comma. + It makes renaming and reordering easier. + Similarly applies to prints with long lists of values. + A TODO to update api crc file comments. Change-Id: I84729355edbec051298a9de1162107f88ff5737d Signed-off-by: Vratko Polak <vrpolak@cisco.com>
2020-10-16GPL: Replace contribution from LucianVratko Polak1-12/+19
We need to replace the contribution, because Lucian is not responding, and thus preventing us to use the new license on his code [0]. See the chain leading to [1] on how this reverts his contribution, and adds a new fix. Unfortunately we cannot merge that chain one-by-one, because Python version is different now, so verify fails for intermediate changes. This is the chain squashed into the single change, so it can be verified and merged. [0] https://gerrit.fd.io/r/c/csit/+/11530 [1] https://gerrit.fd.io/r/c/csit/+/29481/2 Change-Id: I00ab3786e1d9abc28fed778b36d814d293c49383 Signed-off-by: Vratko Polak <vrpolak@cisco.com>
2020-09-24test: nat44det - add session number checkJan Gelety2-338/+0
- some tests need to reduce rate for ramp-up phase - some tests need to extend trail duration in ramp-up phase - removed 2n1l-10ge2p1x710-ethip4udp-nat44det-h1-p63-s63 suite as nat out ports are randomly selected from available port range so T-Rex stateless is not able to provide required out2in traffic Change-Id: I1145496610d202f81d911e68aa819844d7600918 Signed-off-by: Jan Gelety <jgelety@cisco.com>
2020-09-21Tests: nat44ed-unipmikus5-0/+590
Signed-off-by: pmikus <pmikus@cisco.com> Change-Id: Iee488e2244a4e253471310bc7fb9640c69c6b0cb
2020-09-07VPP-DEV API COV: Add NAT44-ED testsJan Gelety2-0/+220
Jira: CSIT-1755 Change-Id: I34baa22a49f44da3fa80d91fa2f4132c982fe610 Signed-off-by: Jan Gelety <jgelety@cisco.com>
2020-09-03FIX: use correct minimal packet length in scapy scriptsJan Gelety1-5/+9
Change-Id: Icd1b4a3edb203cb0963203bb2e3e765b35c81600 Signed-off-by: Jan Gelety <jgelety@cisco.com>
2020-08-24T-Rex: 2.82, core pin, 8 workerspmikus7-9/+13
+ Bump T-Rex version. We need new features for ASTF test. + Apply core pining. Results in a more stable performance. + Tweak the number of T-Rex workers. + We need an even value to achieve ymmetric performance with pinning. + Value 8 was selected as a best compromise. This is a combination of 3 commits. This is the 1st commit message: T-Rex: 2.82 This is the commit message #2: Change Trex to CORE_MASK_PIN mode to improve performance https://trex-tgn.cisco.com/trex/doc/trex_stateless.html#_core_masking_per_interface Above link have below explaination, "When the profile is symmetric, performance can be improved by pinning half of the cores to port 0, and half of the cores to port 1, thus avoiding cache trashing and bouncing." The reason to change this is that to run CSIT with 100G NIC often failed with "TRex stateless runtime error timeout", it caused by Trex can not send enough traffic within the fixed duration. by change to CORE_MASK_PIN mode fix the issue. Not editing ASTF, as that supports different options. This is the commit message #3: Experiment: Vary number of TRex workers With CORE_MASK_PIN, we can get more predictable time distribution. Decided to use 8 workers, that gives good results both for high end (RDMA-core l2patch) and low end (vhost) tests. Change-Id: I5c61127799e0624464e960fcb980ad1c4058e744 Signed-off-by: pmikus <pmikus@cisco.com> Signed-off-by: Yulong Pei <yulong.pei@intel.com> Signed-off-by: Vratko Polak <vrpolak@cisco.com>
2020-08-20Framework: use 'stl' in trex stateless profile namesJan Gelety137-0/+0
Change-Id: I74641cc89d2f25d50b67d51bf2567082b420aabb Signed-off-by: Jan Gelety <jgelety@cisco.com>
2020-08-19Sign off on relicensing of scapy related files for IntelRay Kinsella1-0/+8
Signed-off-by: Ray Kinsella <mdr@ashroe.eu> Change-Id: I5f328b702ff7faffd432d08925cf1c247de1d680
2020-08-19Sign off on relicensing of scapy related files for Cisco.Ed Warnicke1-0/+18
Change-Id: Ia27726d8bed649a55ac93ea3464b8bf278fe9d8f Signed-off-by: Ed Warnicke <hagbard@gmail.com>
2020-08-19Perf: NAT44 endpoint-dependent mode - tcp, part IJan Gelety10-0/+620
Jira: CSIT-1736 - tcp synthetic profiles w/o data packets - tcp cps perf tests, phase I (no special "search cps" KW) Change-Id: I52be34b0fdd51d7a33c8c5de9b46d7064c48f7fa Signed-off-by: Jan Gelety <jgelety@cisco.com>
2020-08-07Perf: NAT44 endpoint-dependent mode - udp, part IJan Gelety9-64/+619
- continuation of https://gerrit.fd.io/r/c/csit/+/26898 as there was reached limit of changes (1000) Jira: CSIT-1711 - udp synthetic profiles w/o data packets - udp cps perf tests, phase I (no special "search cps" KW) Part I means that we are using MRR tests to collect traffic data until there is ready new CPS test type with corresponding algorithm. Change-Id: I0d30feb9ecf1d0bff937152656f8eb422f831378 Signed-off-by: Jan Gelety <jgelety@cisco.com>
2020-07-23T-Rex: Add advanced stateful modeJan Gelety8-24/+870
- provide base routines to run T-Rex in advanced stateful mode Change-Id: Ib0dc5f2919c370753335f6446860683dc4b12d93 Signed-off-by: Jan Gelety <jgelety@cisco.com>
2020-07-30TRex stateless: Fix unidirectional testsVratko Polak1-1/+1
Change-Id: I5e101f012ae4a4383e61b274499817d146479993 Signed-off-by: Vratko Polak <vrpolak@cisco.com>
2020-07-16FIX: CSIT annoyances IIpmikus1-1/+0
- useless code Signed-off-by: pmikus <pmikus@cisco.com> Change-Id: I65dd0f4e1744e4ff84661cd38a67d4490c9733e7
2020-06-17NAT44-EI traffic profiles fix.Maros Mullner8-8/+16
Signed-off-by: Maros Mullner <maros.mullner@pantheon.tech> Change-Id: I200d566aa94c2ae183aa3bc9db85a290f9da858d
2020-06-10NAT44 EI testsMaros Mullner10-7/+1357
Signed-off-by: Maros Mullner <maros.mullner@pantheon.tech> Change-Id: Ib5f58f60a1409ed139e2846793bf52fdc02a6571
2020-05-12FIX: L3fwd properlypmikus1-6/+6
Signed-off-by: pmikus <pmikus@cisco.com> Change-Id: Ibdfc0350a101c4815f25456176e25bb1d90fd881
2020-05-06Separate files needing GPL licenseVratko Polak148-0/+23600
+ Keep apache license for now, until this is completed: https://wiki.fd.io/view/TSC/Relicensing_Procedure + Add utilities for switching license comment blocks. - They do not preserve attributes, so executable flag is lost. + Move the affected files to GPL/. + Update paths so files are executed from the new location. + Change the way scripts are started to do not require executable flag. + Employ OptionString when constructing longer command lines. + Move also PacketVerifier.py and TrafficScriptArg.py as they are linked with traffic scripts. + That means the two files are outside "resources" package tree now. + Added __init__.py files so relative imports work in new package tree. + Start traffic scripts as python modules to allow relative imports. + Once again needed because they are outside the default PYTHONPATH. Change-Id: Ieb135629e890adbaf5b79497570f3be25b746f9f Signed-off-by: Vratko Polak <vrpolak@cisco.com>