-# 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
#
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"192.168.63.255"
- self.p1_dst_start_ip = u"20.0.0.0"
- self.p1_dst_end_ip = u"20.0.63.255"
-
- 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 = 1032192
-
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"192.168.63.255"
+ p1_dst_start_ip = u"20.0.0.0"
+ p1_dst_end_ip = u"20.0.63.255"
+
+ # 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
temp_c = ASTFTCPClientTemplate(
program=prog_c,
ip_gen=ip_gen,
- limit=self.limit,
- port=8080
+ limit=1032192, # 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)
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