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authorVratko Polak <vrpolak@cisco.com>2022-04-25 10:22:05 +0200
committerVratko Polak <vrpolak@cisco.com>2022-05-03 15:23:47 +0000
commit1daa6fdc0bae284dee1b61f34534e59b60b7526a (patch)
tree6314e011a8f029c4332586d5fd05b51d1a69a89c /GPL/traffic_profiles/trex/trex-astf-ethip4tcp-65536h-pps.py
parentcd417be7f836eb9346fad4f87bd4f75dc1d9a429 (diff)
feat(astf): Support framesizes for ASTF
- No support for IMIX. + Fix a bad bug in padding (most ASTF profiles had wrong frame sizes). + Fix a big typo in TCP PPS profiles (s->c was not data, just RST). + Control transaction size via ASTF_N_DATA_FRAMES env variable. - Default value 5 leads to transactions smaller than before. + It ensures transaction is one burst (per direction) even for jumbo. + Edit autogen to set supported frame sizes based on suite id. + Both TCP and UDP use the same values: + 64B for CPS (exact for UDP, nominal for TCP). + 100B, 1518B and 9000B for TPUT and PPS. - TCP TPUT achievable minimum is 70B. + Used 100B to leave room for possible IPv6 ASTF tests. + Separate function for code reused by vpp and trex tests. - I do not really like the new "copy and edit" approach added here. + But it is a quick edit, better autogen refactor is low priority. + Consider both established and transitory sessions as valid. - Mostly for compatibility with 2202 behavior and to avoid ramp-ups. - Assuming both session states have similar enough VPP CPU overhead. + Added a TODO to investigate and maybe reconsider later. + Update the state timeout value to 240s. + That is the default for TCP (for transitory state). - UDP could keep using 300s. + But I prefer UDP and TCP to behave as similarly as possible. + Use TRex tunables to get the exact frame size (for data packets). - It is not clear why the recipe for MSS has to be this complicated. + Move code away from profile init, as frame size is not known there. + Change internal profile API, so values related to MSS are passed. + Lower ramp-up rate for TCP TPUT tests. + Because without lower rate, jumbo fails on packet loss in ramp-up. + UDP TPUT ramp-up rate also lowered (just to keep suites more similar). + Distinguish one-direction and aggregated average frame size. + Update keyword documentation where the distiction matters. + One-direction is needed for turning bandwidth limit to TPS limit. + Aggregated is needed for correct NDRPDR bandwidth result value. - TCP TPUT will always be few percent below bidirectional maximum. + That is unavoidable, as one direction sends more control packets. + Add runtime consistency checks so future refactors are safer. + Fail if padding requested would be negative. + Fail if suite claims unexpected values for packets per transaction. + Edit the 4 types of ASTF profiles to keep them similar to each other. + Move UDP TPUT limit value from a field back to direct argument. + Stop pretending first UDP packet is not data. + Apply small improvements where convenient. + Replace "aggregate" with "aggregated" where possible. + To lower probability of any future typos in variable names. + Avoid calling Set Numeric Frame Sizes twice. + Code formatting, keyword documentation, code comments, ... + Add TODOs for less important code quality improvements. - Postpone updating of methodology pages to a subsequent change. Change-Id: I4b381e5210e69669f972326202fdcc5a2c9c923b Signed-off-by: Vratko Polak <vrpolak@cisco.com>
Diffstat (limited to 'GPL/traffic_profiles/trex/trex-astf-ethip4tcp-65536h-pps.py')
-rw-r--r--GPL/traffic_profiles/trex/trex-astf-ethip4tcp-65536h-pps.py66
1 files changed, 38 insertions, 28 deletions
diff --git a/GPL/traffic_profiles/trex/trex-astf-ethip4tcp-65536h-pps.py b/GPL/traffic_profiles/trex/trex-astf-ethip4tcp-65536h-pps.py
index 6b3bbd4c9f..54de3e500d 100644
--- a/GPL/traffic_profiles/trex/trex-astf-ethip4tcp-65536h-pps.py
+++ b/GPL/traffic_profiles/trex/trex-astf-ethip4tcp-65536h-pps.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2021 Cisco and/or its affiliates.
+# Copyright (c) 2022 Cisco and/or its affiliates.
#
# SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
#
@@ -47,22 +47,6 @@ from profile_trex_astf_base_class import TrafficProfileBaseClass
class TrafficProfile(TrafficProfileBaseClass):
"""Traffic profile."""
- def __init__(self):
- """Initialization and setting of profile parameters."""
-
- super(TrafficProfileBaseClass, self).__init__()
-
- # IPs used in packet headers.
- self.p1_src_start_ip = u"192.168.0.0"
- self.p1_src_end_ip = u"192.168.255.255"
- self.p1_dst_start_ip = u"20.0.0.0"
- self.p1_dst_end_ip = u"20.0.255.255"
-
- # Headers length; not used in this profile, just for the record of
- # header length for TCP packet with 0B payload
- self.headers_size = 58 # 14B l2 + 20B ipv4 + 24B tcp incl. 4B options
- self.data_size = 11111
-
def define_profile(self):
"""Define profile to be used by advanced stateful traffic generator.
@@ -73,31 +57,44 @@ class TrafficProfile(TrafficProfileBaseClass):
:returns: IP generator and profile templates for ASTFProfile().
:rtype: tuple
"""
+ # IPs used in packet headers.
+ p1_src_start_ip = u"192.168.0.0"
+ p1_src_end_ip = u"192.168.255.255"
+ p1_dst_start_ip = u"20.0.0.0"
+ p1_dst_end_ip = u"20.0.255.255"
+
+ # Headers length, not sure why TRex needs 32B for segment header.
+ real_headers_size = 70 # 18B L2 + 20B IPv4 + 32B TCP.
+ trex_headers_size = real_headers_size - 12 # As if TCP header is 20B.
+ trex_mss = self.framesize - trex_headers_size
+ real_mss = trex_mss - 12 # TRex honors segment header+data limit.
+ data_size = self.n_data_frames * real_mss
+
# client commands
prog_c = ASTFProgram()
prog_c.connect()
- prog_c.send(u"1" * self.data_size)
- prog_c.recv(self.data_size)
+ prog_c.send(u"1" * data_size)
+ prog_c.recv(data_size)
# server commands
prog_s = ASTFProgram()
prog_s.accept()
- prog_c.recv(self.data_size)
- prog_c.send(u"1" * self.data_size)
+ prog_s.recv(data_size)
+ prog_s.send(u"1" * data_size)
# ip generators
ip_gen_c = ASTFIPGenDist(
- ip_range=[self.p1_src_start_ip, self.p1_src_end_ip],
- distribution=u"seq"
+ ip_range=[p1_src_start_ip, p1_src_end_ip],
+ distribution=u"seq",
)
ip_gen_s = ASTFIPGenDist(
- ip_range=[self.p1_dst_start_ip, self.p1_dst_end_ip],
- distribution=u"seq"
+ ip_range=[p1_dst_start_ip, p1_dst_end_ip],
+ distribution=u"seq",
)
ip_gen = ASTFIPGen(
glob=ASTFIPGenGlobal(ip_offset=u"0.0.0.1"),
dist_client=ip_gen_c,
- dist_server=ip_gen_s
+ dist_server=ip_gen_s,
)
# server association
@@ -108,12 +105,25 @@ class TrafficProfile(TrafficProfileBaseClass):
program=prog_c,
ip_gen=ip_gen,
limit=4128768, # TODO: set via input parameter
- port=8080
+ port=8080,
)
temp_s = ASTFTCPServerTemplate(program=prog_s, assoc=s_assoc)
template = ASTFTemplate(client_template=temp_c, server_template=temp_s)
- return ip_gen, template, None
+ globinfo = ASTFGlobalInfo()
+ # Ensure correct data frame size.
+ globinfo.tcp.mss = trex_mss
+ # Ensure the whole transaction is a single burst (per direction).
+ globinfo.tcp.initwnd = self.n_data_frames
+ # Ensure buffers are large enough so starting window works.
+ globinfo.tcp.txbufsize = data_size
+ globinfo.tcp.rxbufsize = data_size
+ kwargs = dict(
+ default_c_glob_info=globinfo,
+ default_s_glob_info=globinfo,
+ )
+
+ return ip_gen, template, kwargs
def register():