import os from trex_stl_lib.api import * # PCAP profile class STLPcap(object): def __init__ (self, pcap_file): self.pcap_file = pcap_file def create_vm (self, ip_src_range, ip_dst_range): if not ip_src_range and not ip_dst_range: return None vm = [] if ip_src_range: vm += [STLVmFlowVar(name="src", min_value = ip_src_range['start'], max_value = ip_src_range['end'], size = 4, op = "inc"), STLVmWrFlowVar(fv_name="src",pkt_offset= "IP.src") ] if ip_dst_range: vm += [STLVmFlowVar(name="dst", min_value = ip_dst_range['start'], max_value = ip_dst_range['end'], size = 4, op = "inc"), STLVmWrFlowVar(fv_name="dst",pkt_offset = 30) ] vm += [STLVmFixIpv4(offset = "IP") ] return vm def get_streams (self, ipg_usec = 10.0, loop_count = 5, ip_src_range = None, ip_dst_range = {'start' : '10.0.0.1', 'end': '10.0.0.254'}): vm = self.create_vm(ip_src_range, ip_dst_range) profile = STLProfile.load_pcap(self.pcap_file, ipg_usec = ipg_usec, loop_count = loop_count, vm = vm) return profile.get_streams() # dynamic load - used for trex console or simulator def register(): # get file relative to profile dir return STLPcap(os.path.join(os.path.dirname(__file__), 'sample.pcap'))