# throw exeption since we need the first bit to be 1
# Otherwise, the randomization could results in all 0's
# and that might be an invalid UDP port and result in
- # packets begin discarded
+ # packets being discarded
src_number_of_random_bits = number_of_random_bits // 2
dst_number_of_random_bits = (number_of_random_bits -
src_number_of_random_bits)
src_number_of_random_bits)
dst_port_bitmap = '1000000000000000'.replace ('0','X',
dst_number_of_random_bits)
- return [src_port_bitmap, dst_port_bitmap, 1<<number_of_random_bits]
+ return [src_port_bitmap, dst_port_bitmap, 1 << number_of_random_bits]
class RapidGeneratorMachine(RapidMachine):
"""
- Class to deal with rapid configuration files
+ Class to deal with a generator PROX instance (VM, bare metal, container)
"""
+ def __init__(self, key, user, vim, rundir, machine_params, ipv6):
+ mac_address_size = 6
+ ethertype_size = 2
+ FCS_size = 4
+ if ipv6:
+ ip_header_size = 40
+ self.ip_length_offset = 18
+ # In IPV6, the IP size is the size of the IP content
+ self.frame_size_minus_ip_size = (2 * mac_address_size +
+ ethertype_size + ip_header_size + FCS_size)
+ else:
+ ip_header_size = 20
+ self.ip_length_offset = 16
+ # In IPV4, the IP size is the size of the IP header + IP content
+ self.frame_size_minus_ip_size = (2 * mac_address_size +
+ ethertype_size + FCS_size)
+ self.frame_size_minus_udp_header_and_content = (2 * mac_address_size +
+ ethertype_size + ip_header_size + FCS_size )
+ udp_header_start_offset = (2 * mac_address_size + ethertype_size +
+ ip_header_size)
+ self.udp_source_port_offset = udp_header_start_offset
+ self.udp_dest_port_offset = udp_header_start_offset + 2
+ self.udp_length_offset = udp_header_start_offset + 4
+ self.ipv6 = ipv6
+ super().__init__(key, user, vim, rundir, machine_params)
+
def get_cores(self):
return (self.machine_params['gencores'] +
self.machine_params['latcores'])
for index, gw_ip in enumerate(self.machine_params['gw_ips'],
start = 1):
appendix = appendix + 'gw_ip{}="{}"\n'.format(index, gw_ip)
- appendix = (appendix +
- 'gw_hex_ip{}=convertIPToHex(gw_ip{})\n'.format(index,
- index))
+ appendix = (appendix + 'gw_hex_ip{}=convertIPToHex(gw_ip{})\n'.
+ format(index, index))
if 'bucket_size_exp' in self.machine_params.keys():
self.bucket_size_exp = self.machine_params['bucket_size_exp']
else:
# The set_size function takes the PROX packet size as a parameter
self.socket.set_size(self.machine_params['gencores'], 0,
imix_frame_sizes[0] - 4)
- # 18 is the difference between the frame size and IP size =
- # size of (MAC addresses, ethertype and FCS)
- self.socket.set_value(self.machine_params['gencores'], 0, 16,
- imix_frame_sizes[0] - 18, 2)
- # 38 is the difference between the frame size and UDP size =
- # 18 + size of IP header (=20)
- self.socket.set_value(self.machine_params['gencores'], 0, 38,
- imix_frame_sizes[0] - 38, 2)
+ # Writing length in the ip header
+ self.socket.set_value(self.machine_params['gencores'], 0,
+ self.ip_length_offset, imix_frame_sizes[0] -
+ self.frame_size_minus_ip_size, 2)
+ # Writing length in the udp header
+ self.socket.set_value(self.machine_params['gencores'], 0,
+ self.udp_length_offset, imix_frame_sizes[0] -
+ self.frame_size_minus_udp_header_and_content, 2)
else:
+ if self.ipv6:
+ RapidLog.critical('IMIX not supported for IPV6')
prox_sizes = [frame_size - 4 for frame_size in imix_frame_sizes]
self.socket.set_imix(self.machine_params['gencores'], 0,
prox_sizes)
def set_flows(self, number_of_flows):
source_port, destination_port, actualflows = RandomPortBits.get_bitmap(
number_of_flows)
- self.socket.set_random(self.machine_params['gencores'],0,34,
- source_port,2)
- self.socket.set_random(self.machine_params['gencores'],0,36,
- destination_port,2)
+ self.socket.set_random(self.machine_params['gencores'],0,
+ self.udp_source_port_offset, source_port,2)
+ self.socket.set_random(self.machine_params['gencores'],0,
+ self.udp_dest_port_offset, destination_port,2)
return actualflows
def start_gen_cores(self):
Code Review / samplevnf.git / commitdiff