# See the License for the specific language governing permissions and
# limitations under the License.
+"""This script uses T-REX stateless API to drive t-rex instance.
+
+Requirements:
+- T-REX: https://github.com/cisco-system-traffic-generator/trex-core
+ - compiled and running T-REX process (eg. ./t-rex-64 -i -c 4)
+ - trex_stl_lib.api library
+- Script must be executed on a node with T-REX instance
+- 2 interfaces must be configured in configuretion file /etc/trex_cfg.yaml
+
+##################### Example of /etc/trex_cfg.yaml ##########################
+- port_limit : 2 # numbers of ports to use
+ version : 2
+ interfaces : ["84:00.0","84:00.1"] # PCI address of interfaces
+ port_info : # set eth mac addr
+ - dest_mac : [0x90,0xe2,0xba,0x1f,0x97,0xd5] # port 0
+ src_mac : [0x90,0xe2,0xba,0x1f,0x97,0xd4]
+ - dest_mac : [0x90,0xe2,0xba,0x1f,0x97,0xd4] # port 1
+ src_mac : [0x90,0xe2,0xba,0x1f,0x97,0xd5]
+##############################################################################
+
+Functionality:
+1. Configure traffic on running T-REX instance
+2. Clear statistics on all ports
+3. Ctart traffic with specified duration
+4. Print statistics to stdout
+
+"""
+
import sys, getopt
-sys.path.insert(0, "/opt/trex-core-1.88/scripts/api/stl/")
+sys.path.insert(0, "/opt/trex-core-1.91/scripts/automation/trex_control_plane/stl/")
-from trex_stl_api import *
+from trex_stl_lib.api import *
import dpkt
import json
print "Packet min. size is 64B"
sys.exit(2)
- # build A side packet
- pkt_a = STLPktBuilder()
-
- pkt_a.add_pkt_layer("l2", dpkt.ethernet.Ethernet())
- pkt_a.add_pkt_layer("l3_ip", dpkt.ip.IP())
- pkt_a.add_pkt_layer("l4_udp", dpkt.udp.UDP())
- pkt_a.set_pkt_payload(generate_payload(frame_size -
- pkt_a.get_packet_length()))
- pkt_a.set_layer_attr("l3_ip", "len", len(pkt_a.get_layer('l3_ip')))
-
- # build B side packet
- pkt_b = pkt_a.clone()
+ fsize_no_fcs = frame_size - 4 # no FCS
- p1_src_mac = traffic_options['p1_src_mac']
- p1_dst_mac = traffic_options['p1_dst_mac']
+ #p1_src_mac = traffic_options['p1_src_mac']
+ #p1_dst_mac = traffic_options['p1_dst_mac']
p1_src_start_ip = traffic_options['p1_src_start_ip']
p1_src_end_ip = traffic_options['p1_src_end_ip']
p1_dst_start_ip = traffic_options['p1_dst_start_ip']
- p1_dst_end_ip = traffic_options['p1_dst_end_ip']
- p2_src_mac = traffic_options['p2_src_mac']
- p2_dst_mac = traffic_options['p2_dst_mac']
+ #p1_dst_end_ip = traffic_options['p1_dst_end_ip']
+ #p2_src_mac = traffic_options['p2_src_mac']
+ #p2_dst_mac = traffic_options['p2_dst_mac']
p2_src_start_ip = traffic_options['p2_src_start_ip']
p2_src_end_ip = traffic_options['p2_src_end_ip']
p2_dst_start_ip = traffic_options['p2_dst_start_ip']
- p2_dst_end_ip = traffic_options['p2_dst_end_ip']
-
- pkt_a.set_eth_layer_addr(layer_name="l2",
- attr="src",
- mac_addr=p1_src_mac)
- pkt_a.set_eth_layer_addr(layer_name="l2",
- attr="dst",
- mac_addr=p1_dst_mac)
- pkt_b.set_eth_layer_addr(layer_name="l2",
- attr="src",
- mac_addr=p2_src_mac)
- pkt_b.set_eth_layer_addr(layer_name="l2",
- attr="dst",
- mac_addr=p2_dst_mac)
-
- # set IP range for pkt and split it by multiple cores
- pkt_a.set_vm_ip_range(ip_layer_name="l3_ip",
- ip_field="src",
- ip_start=p1_src_start_ip, ip_end=p1_src_end_ip,
- operation="inc",
- split=True)
-
- pkt_a.set_vm_ip_range(ip_layer_name="l3_ip",
- ip_field="dst",
- ip_start=p1_dst_start_ip, ip_end=p1_dst_end_ip,
- operation="inc")
-
-
- # build B side packet
- pkt_b.set_vm_ip_range(ip_layer_name="l3_ip",
- ip_field="src",
- ip_start=p2_src_start_ip, ip_end=p2_src_end_ip,
- operation="inc",
- split=True)
-
- pkt_b.set_vm_ip_range(ip_layer_name="l3_ip",
- ip_field="dst",
- ip_start=p2_dst_start_ip, ip_end=p2_dst_end_ip,
- operation="inc")
+ #p2_dst_end_ip = traffic_options['p2_dst_end_ip']
+
+ base_pkt_a = Ether()/IP(src=p1_src_start_ip, dst=p1_dst_start_ip)/UDP(dport=12, sport=1025, chksum=0)
+ base_pkt_b = Ether()/IP(src=p2_src_start_ip, dst=p2_dst_start_ip)/UDP(dport=12, sport=1025, chksum=0)
+
+ vm1 = CTRexScRaw([STLVmTupleGen(ip_min=p1_src_start_ip, ip_max=p1_src_end_ip,
+ name="tuple"), # define tuple gen
+
+ STLVmWrFlowVar(fv_name="tuple.ip", pkt_offset="IP.src"), # write ip to packet IP.src
+ STLVmFixIpv4(offset="IP"), # fix checksum
+ ]
+ , split_by_field="tuple") # split to cores base on the tuple generator
+
+ vm2 = CTRexScRaw([STLVmTupleGen(ip_min=p2_src_start_ip, ip_max=p2_src_end_ip,
+ name="tuple"), # define tuple gen
+
+ STLVmWrFlowVar(fv_name="tuple.ip", pkt_offset="IP.src"), # write ip to packet IP.src
+ STLVmFixIpv4(offset="IP"), # fix checksum
+ ]
+ , split_by_field="tuple") # split to cores base on the tuple generator
+
+ pkt_a = STLPktBuilder(pkt=base_pkt_a/generate_payload(fsize_no_fcs-len(base_pkt_a)), vm=vm1)
+ pkt_b = STLPktBuilder(pkt=base_pkt_b/generate_payload(fsize_no_fcs-len(base_pkt_b)), vm=vm2)
return(pkt_a, pkt_b)
s1 = STLStream(packet=pkt_a,
mode=STLTXCont(pps=100))
- # second stream with a phase of 1ms (inter stream gap)
+ # second stream with a phase of 10ns (inter stream gap)
s2 = STLStream(packet=pkt_b,
- isg=1000,
+ isg=10.0,
mode=STLTXCont(pps=100))
c.start(ports=[0, 1], mult=rate, duration=warmup_time)
c.wait_on_traffic(ports=[0, 1])
stats = c.get_stats()
+ print stats
print "#####warmup statistics#####"
- print json.dumps(stats["port 0"], indent=4,
+ print json.dumps(stats, indent=4,
separators=(',', ': '), sort_keys=True)
- print json.dumps(stats["port 1"], indent=4,
- separators=(',', ': '), sort_keys=True)
- lost_a = stats["port 0"]["opackets"] - stats["port 1"]["ipackets"]
- lost_b = stats["port 1"]["opackets"] - stats["port 0"]["ipackets"]
+ lost_a = stats[0]["opackets"] - stats[1]["ipackets"]
+ lost_b = stats[1]["opackets"] - stats[0]["ipackets"]
print "\npackets lost from 0 --> 1: {0} pkts".format(lost_a)
print "packets lost from 1 --> 0: {0} pkts".format(lost_b)
stats = c.get_stats()
print "#####statistics#####"
- print json.dumps(stats["port 0"], indent=4,
- separators=(',', ': '), sort_keys=True)
- print json.dumps(stats["port 1"], indent=4,
+ print json.dumps(stats, indent=4,
separators=(',', ': '), sort_keys=True)
- lost_a = stats["port 0"]["opackets"] - stats["port 1"]["ipackets"]
- lost_b = stats["port 1"]["opackets"] - stats["port 0"]["ipackets"]
+ lost_a = stats[0]["opackets"] - stats[1]["ipackets"]
+ lost_b = stats[1]["opackets"] - stats[0]["ipackets"]
- total_sent = stats["port 0"]["opackets"] + stats["port 1"]["opackets"]
- total_rcvd = stats["port 0"]["ipackets"] + stats["port 1"]["ipackets"]
+ total_sent = stats[0]["opackets"] + stats[1]["opackets"]
+ total_rcvd = stats[0]["ipackets"] + stats[1]["ipackets"]
print "\npackets lost from 0 --> 1: {0} pkts".format(lost_a)
print "packets lost from 1 --> 0: {0} pkts".format(lost_b)
_frame_size = int(arg)
elif opt == '-r':
_rate = arg
- elif opt.startswith( "--p" ):
+ elif opt.startswith("--p"):
_traffic_options[opt[2:]] = arg
print _traffic_options
- if len(_traffic_options) != 12:
- print "Expected all 12 traffic options"
+ if len(_traffic_options) != 6:
+ print "Supported only: src_start_ip, src_end_ip, dst_start_ip"
print_help()
sys.exit(2)
Code Review / csit.git / blobdiff