diff options
Diffstat (limited to 'tools/pkt_gen')
| -rw-r--r-- | tools/pkt_gen/trex/trex.py | 43 |
1 files changed, 41 insertions, 2 deletions
diff --git a/tools/pkt_gen/trex/trex.py b/tools/pkt_gen/trex/trex.py index 7b554ecb..abae35dc 100644 --- a/tools/pkt_gen/trex/trex.py +++ b/tools/pkt_gen/trex/trex.py @@ -21,6 +21,7 @@ import subprocess import sys from collections import OrderedDict # pylint: disable=unused-import +import netaddr import zmq from conf import settings from conf import merge_spec @@ -174,8 +175,46 @@ class Trex(ITrafficGenerator): fsize_no_fcs = frame_size - 4 payload_a = max(0, fsize_no_fcs - len(base_pkt_a)) * 'x' payload_b = max(0, fsize_no_fcs - len(base_pkt_b)) * 'x' - pkt_a = STLPktBuilder(pkt=base_pkt_a/payload_a) - pkt_b = STLPktBuilder(pkt=base_pkt_b/payload_b) + + # Multistream configuration, increments source values only + ms_mod = list() # mod list for incrementing values to be populated based on layer + if traffic['multistream'] > 1: + if traffic['stream_type'].upper() == 'L2': + for _ in [base_pkt_a, base_pkt_b]: + ms_mod += [STLVmFlowVar(name="mac_start", min_value=0, + max_value=traffic['multistream'] - 1, size=4, op="inc"), + STLVmWrFlowVar(fv_name="mac_start", pkt_offset=7)] + elif traffic['stream_type'].upper() == 'L3': + ip_src = {"start": int(netaddr.IPAddress(traffic['l3']['srcip'])), + "end": int(netaddr.IPAddress(traffic['l3']['srcip'])) + traffic['multistream'] - 1} + ip_dst = {"start": int(netaddr.IPAddress(traffic['l3']['dstip'])), + "end": int(netaddr.IPAddress(traffic['l3']['dstip'])) + traffic['multistream'] - 1} + for ip_address in [ip_src, ip_dst]: + ms_mod += [STLVmFlowVar(name="ip_src", min_value=ip_address['start'], + max_value=ip_address['end'], size=4, op="inc"), + STLVmWrFlowVar(fv_name="ip_src", pkt_offset="IP.src")] + elif traffic['stream_type'].upper() == 'L4': + for udpport in [traffic['l4']['srcport'], traffic['l4']['dstport']]: + if udpport + (traffic['multistream'] - 1) > 65535: + start_port = udpport + # find the max/min port number based on the loop around of 65535 to 0 if needed + minimum_value = 65535 - (traffic['multistream'] -1) + maximum_value = 65535 + else: + start_port, minimum_value = udpport, udpport + maximum_value = start_port + (traffic['multistream'] - 1) + ms_mod += [STLVmFlowVar(name="port_src", init_value=start_port, + min_value=minimum_value, max_value=maximum_value, + size=2, op="inc"), + STLVmWrFlowVar(fv_name="port_src", pkt_offset="UDP.sport"),] + + if ms_mod: # multistream detected + pkt_a = STLPktBuilder(pkt=base_pkt_a/payload_a, vm=[ms_mod[0], ms_mod[1]]) + pkt_b = STLPktBuilder(pkt=base_pkt_b/payload_b, vm=[ms_mod[2], ms_mod[3]]) + else: + pkt_a = STLPktBuilder(pkt=base_pkt_a / payload_a) + pkt_b = STLPktBuilder(pkt=base_pkt_b / payload_b) + stream_1 = STLStream(packet=pkt_a, name='stream_1', mode=STLTXCont(percentage=traffic['frame_rate'])) |