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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-ethip4udp-4096h-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-ethip4udp-4096h-pps.py')
-rw-r--r--GPL/traffic_profiles/trex/trex-astf-ethip4udp-4096h-pps.py82
1 files changed, 39 insertions, 43 deletions
diff --git a/GPL/traffic_profiles/trex/trex-astf-ethip4udp-4096h-pps.py b/GPL/traffic_profiles/trex/trex-astf-ethip4udp-4096h-pps.py
index 00dbeee308..5de25273ef 100644
--- a/GPL/traffic_profiles/trex/trex-astf-ethip4udp-4096h-pps.py
+++ b/GPL/traffic_profiles/trex/trex-astf-ethip4udp-4096h-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
#
@@ -46,84 +46,80 @@ from profile_trex_astf_base_class import TrafficProfileBaseClass
class TrafficProfile(TrafficProfileBaseClass):
"""Traffic profile."""
- def __init__(self, **kwargs):
- """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"192.168.15.255"
- self.p1_dst_start_ip = u"20.0.0.0"
- self.p1_dst_end_ip = u"20.0.15.255"
-
- self.headers_size = 42 # 14B l2 + 20B ipv4 + 8B UDP
-
- self.udp_data = u""
-
- self.n_data = 32 # TODO: set via input parameter
- self.m_delay = 2000000 # delay 2000s (2,000,000 ms)
- self.u_delay = 1000 * self.m_delay # delay 2000s (2,000,000,000 us)
- self.limit = 258048
-
def define_profile(self):
"""Define profile to be used by advanced stateful traffic generator.
This method MUST return:
- return ip_gen, templates
+ return ip_gen, templates, None
:returns: IP generator and profile templates for ASTFProfile().
:rtype: tuple
"""
- if self.framesize == 64:
- self.udp_data += self._gen_padding(self.headers_size, 72)
- if self.framesize == 1518:
- self.udp_data += self._gen_padding(self.headers_size, 1514)
+ # IPs used in packet headers.
+ p1_src_start_ip = u"192.168.0.0"
+ p1_src_end_ip = u"192.168.15.255"
+ p1_dst_start_ip = u"20.0.0.0"
+ p1_dst_end_ip = u"20.0.15.255"
+
+ # The difference between data size and frame size.
+ headers_size = 46 # 18B L2 + 20B IPv4 + 8B UDP.
+
+ # TODO: Use the "connection protocol" from CPS traffic profile?
+ # Currently, the first data packet is all DUT sees about the session.
+
+ # Avoid sending keepalives.
+ m_delay = 2000000 # delay 2000s (2,000,000 ms)
+
+ # Data, not padded yet.
+ udp_data = u""
+ # Pad the data to achieve the intended frame size.
+ udp_data += self._gen_padding(headers_size)
+
+ # Safety check, the current programs send at least 1 packet.
+ if self.n_data_frames < 1:
+ raise RuntimeError("n_data_frames < 1: {self.n_data_frames}")
# Client program.
prog_c = ASTFProgram(stream=False)
- prog_c.set_keepalive_msg(self.m_delay)
- prog_c.send_msg(self.udp_data)
- # No delay, PPS tests combine connect and data send (no data receive).
- prog_c.set_var(u"var1", self.n_data)
+ prog_c.set_keepalive_msg(m_delay)
+ prog_c.set_var(u"var1", self.n_data_frames)
prog_c.set_label(u"a:")
- prog_c.send_msg(self.udp_data)
+ prog_c.send_msg(udp_data)
prog_c.jmp_nz(u"var1", u"a:")
# We should read the server response,
# but no reason to overload client workers even more.
# Server program.
prog_s = ASTFProgram(stream=False)
- prog_s.set_keepalive_msg(self.m_delay)
+ prog_s.set_keepalive_msg(m_delay)
# If server closes too soon, new instances are started
# leading in too much replies. To prevent that, we need to recv all.
- prog_s.recv_msg(1 + self.n_data)
+ prog_s.recv_msg(self.n_data_frames)
# In packet loss scenarios, some instances never get here.
# This maybe increases server traffic duration,
# but no other way if we want to avoid
# TRex creating a second instance of the same server.
- prog_s.send_msg(self.udp_data)
- prog_s.set_var(u"var2", self.n_data)
+ prog_s.set_var(u"var2", self.n_data_frames)
prog_s.set_label(u"b:")
- prog_s.send_msg(self.udp_data)
+ prog_s.send_msg(udp_data)
prog_s.jmp_nz(u"var2", u"b:")
# VPP never duplicates packets,
# so it is safe to close the server instance now.
# 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
@@ -133,8 +129,8 @@ class TrafficProfile(TrafficProfileBaseClass):
temp_c = ASTFTCPClientTemplate(
program=prog_c,
ip_gen=ip_gen,
- limit=self.limit,
- port=8080
+ limit=258048, # TODO: Any benefit of making this configurable?
+ port=8080,
)
temp_s = ASTFTCPServerTemplate(program=prog_s, assoc=s_assoc)
template = ASTFTemplate(client_template=temp_c, server_template=temp_s)