# under the License.
import glob
+from math import gcd
from math import isnan
import os
import re
import fcntl
from functools import wraps
import json
-from log import LOG
-
+from .log import LOG
+from nfvbench.traffic_gen.traffic_utils import multiplier_map
class TimeoutError(Exception):
pass
def save_json_result(result, json_file, std_json_path, service_chain, service_chain_count,
- flow_count, frame_sizes):
+ flow_count, frame_sizes, user_id=None, group_id=None):
"""Save results in json format file."""
filepaths = []
if json_file:
sort_keys=True,
separators=(',', ': '),
default=lambda obj: obj.to_json())
-
-
-def byteify(data, ignore_dicts=False):
- # if this is a unicode string, return its string representation
- if isinstance(data, unicode):
- return data.encode('utf-8')
- # if this is a list of values, return list of byteified values
- if isinstance(data, list):
- return [byteify(item, ignore_dicts=ignore_dicts) for item in data]
- # if this is a dictionary, return dictionary of byteified keys and values
- # but only if we haven't already byteified it
- if isinstance(data, dict) and not ignore_dicts:
- return {byteify(key, ignore_dicts=ignore_dicts): byteify(value, ignore_dicts=ignore_dicts)
- for key, value in data.iteritems()}
- # if it's anything else, return it in its original form
- return data
+ # possibly change file ownership
+ if group_id is None:
+ group_id = user_id
+ if user_id is not None:
+ os.chown(file_path, user_id, group_id)
def dict_to_json_dict(record):
return json.loads(json.dumps(record, default=lambda obj: obj.to_json()))
-def get_intel_pci(nic_ports):
- """Returns the first two PCI addresses of sorted PCI list for Intel NIC (i40e, ixgbe)"""
+def get_intel_pci(nic_slot=None, nic_ports=None):
+ """Returns two PCI address that will be used for NFVbench
+
+ @param nic_slot: The physical PCIe slot number in motherboard
+ @param nic_ports: Array of two integers indicating the ports to use on the NIC
+
+ When nic_slot and nic_ports are both supplied, the function will just return
+ the PCI addresses for them. The logic used is:
+ (1) Run "dmidecode -t slot"
+ (2) Grep for "SlotID:" with given nic_slot, and derive the bus address;
+ (3) Based on given nic_ports, generate the pci addresses based on above
+ base address;
+
+ When either nic_slot or nic_ports is not supplied, the function will
+ traverse all Intel NICs which use i40e or ixgbe driver, sorted by PCI
+ address, and return first two available ports which are not bonded
+ (802.11ad).
+ """
+
+ if nic_slot and nic_ports:
+ dmidecode = subprocess.check_output(['dmidecode', '-t', 'slot'])
+ regex = r"(?<=SlotID:{}).*?(....:..:..\..)".format(nic_slot)
+ match = re.search(regex, dmidecode.decode('utf-8'), flags=re.DOTALL)
+ if not match:
+ return None
+
+ pcis = []
+ # On some servers, the "Bus Address" returned by dmidecode is not the
+ # base pci address of the NIC. So only keeping the bus part of the
+ # address for better compability.
+ bus = match.group(1)[:match.group(1).rindex(':') + 1] + "00."
+ for port in nic_ports:
+ pcis.append(bus + str(port))
+
+ return pcis
+
hx = r'[0-9a-fA-F]'
regex = r'({hx}{{4}}:({hx}{{2}}:{hx}{{2}}\.{hx}{{1}})).*(drv={driver}|.*unused=.*{driver})'
pcis = []
-
try:
trex_base_dir = '/opt/trex'
contents = os.listdir(trex_base_dir)
devices = ''
for driver in ['i40e', 'ixgbe']:
- matches = re.findall(regex.format(hx=hx, driver=driver), devices)
+ matches = re.findall(regex.format(hx=hx, driver=driver), devices.decode("utf-8"))
if not matches:
continue
matches.sort()
- if nic_ports:
- if max(nic_ports) > len(matches) - 1:
- # If this is hard requirements (i.e. ports are defined
- # explictly), but there are not enough ports for the
- # current NIC, just skip the current NIC and looking for
- # next available one.
- continue
- else:
- return [matches[idx][1] for idx in nic_ports]
- else:
- for port in matches:
- intf_name = glob.glob("/sys/bus/pci/devices/%s/net/*" % port[0])
- if not intf_name:
- # Interface is not bind to kernel driver, so take it
- pcis.append(port[1])
- else:
- intf_name = intf_name[0][intf_name[0].rfind('/') + 1:]
- process = subprocess.Popen(['ip', '-o', '-d', 'link', 'show', intf_name],
- stdout=subprocess.PIPE,
- stderr=subprocess.PIPE)
- intf_info, _ = process.communicate()
- if not re.search('team_slave|bond_slave', intf_info):
- pcis.append(port[1])
-
- if len(pcis) == 2:
- break
+ device_list = list(x[0].split('.')[0] for x in matches)
+ device_ports_list = {i: {'ports': device_list.count(i)} for i in device_list}
+ for port in matches:
+ intf_name = glob.glob("/sys/bus/pci/devices/%s/net/*" % port[0])
+ if intf_name:
+ intf_name = intf_name[0][intf_name[0].rfind('/') + 1:]
+ process = subprocess.Popen(['ip', '-o', '-d', 'link', 'show', intf_name],
+ stdout=subprocess.PIPE,
+ stderr=subprocess.PIPE)
+ intf_info, _ = process.communicate()
+ if re.search('team_slave|bond_slave', intf_info.decode("utf-8")):
+ device_ports_list[port[0].split('.')[0]]['busy'] = True
+ for port in matches:
+ if not device_ports_list[port[0].split('.')[0]].get('busy'):
+ pcis.append(port[1])
+ if len(pcis) == 2:
+ break
return pcis
-multiplier_map = {
- 'K': 1000,
- 'M': 1000000,
- 'G': 1000000000
-}
-
-
def parse_flow_count(flow_count):
flow_count = str(flow_count)
input_fc = flow_count
try:
flow_count = int(flow_count)
except ValueError:
- raise Exception("Unknown flow count format '{}'".format(input_fc))
+ raise Exception("Unknown flow count format '{}'".format(input_fc)) from ValueError
return flow_count * multiplier
def cast_integer(value):
- return int(value) if not isnan(value) else value
+ # force 0 value if NaN value from TRex to avoid error in JSON result parsing
+ return int(value) if not isnan(value) else 0
class RunLock(object):
try:
self._fd = os.open(self._path, os.O_CREAT)
fcntl.flock(self._fd, fcntl.LOCK_EX | fcntl.LOCK_NB)
- except (OSError, IOError):
- raise Exception('Other NFVbench process is running. Please wait')
+ except (OSError, IOError) as e:
+ raise Exception('Other NFVbench process is running. Please wait') from e
def __exit__(self, *args):
fcntl.flock(self._fd, fcntl.LOCK_UN)
os.unlink(self._path)
except (OSError, IOError):
pass
+
+
+def get_divisors(n):
+ for i in range(1, int(n / 2) + 1):
+ if n % i == 0:
+ yield i
+ yield n
+
+
+def lcm(a, b):
+ """
+ Calculate the maximum possible value for both IP and ports,
+ eventually for maximum possible flow.
+ """
+ if a != 0 and b != 0:
+ lcm_value = a * b // gcd(a, b)
+ return lcm_value
+ raise TypeError(" IP size or port range can't be zero !")
+
+
+def find_tuples_equal_to_lcm_value(a, b, lcm_value):
+ """
+ Find numbers from two list matching a LCM value.
+ """
+ for x in a:
+ for y in b:
+ if lcm(x, y) == lcm_value:
+ yield (x, y)
+
+
+def find_max_size(max_size, tuples, flow):
+ if tuples:
+ if max_size > tuples[-1][0]:
+ max_size = tuples[-1][0]
+ return int(max_size)
+ if max_size > tuples[-1][1]:
+ max_size = tuples[-1][1]
+ return int(max_size)
+
+ for i in range(max_size, 1, -1):
+ if flow % i == 0:
+ return int(i)
+ return 1
Code Review / nfvbench.git / blobdiff