97f31560ca
* Copying P4D2 Fall 2017 into P4D2 2018 East. * Updated P4D2_2018_East VM. Added vagrant URL workaround, cdrom to VM. Updated to latest commits of BMV2, p4c, PI. Known issue with p4runtime exercise. * Applied patch from @antoninbas in and updated solution
79 lines
2.2 KiB
Python
Executable File
79 lines
2.2 KiB
Python
Executable File
#!/usr/bin/env python
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import argparse
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import sys
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import socket
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import random
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import struct
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from scapy.all import sendp, send, hexdump, get_if_list, get_if_hwaddr
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from scapy.all import Packet, IPOption
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from scapy.all import Ether, IP, UDP
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from scapy.all import IntField, FieldListField, FieldLenField, ShortField, PacketListField
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from scapy.layers.inet import _IPOption_HDR
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from time import sleep
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def get_if():
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ifs=get_if_list()
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iface=None # "h1-eth0"
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for i in get_if_list():
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if "eth0" in i:
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iface=i
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break;
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if not iface:
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print "Cannot find eth0 interface"
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exit(1)
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return iface
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class SwitchTrace(Packet):
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fields_desc = [ IntField("swid", 0),
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IntField("qdepth", 0)]
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def extract_padding(self, p):
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return "", p
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class IPOption_MRI(IPOption):
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name = "MRI"
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option = 31
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fields_desc = [ _IPOption_HDR,
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FieldLenField("length", None, fmt="B",
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length_of="swtraces",
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adjust=lambda pkt,l:l*2+4),
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ShortField("count", 0),
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PacketListField("swtraces",
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[],
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SwitchTrace,
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count_from=lambda pkt:(pkt.count*1)) ]
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def main():
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if len(sys.argv)<3:
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print 'pass 2 arguments: <destination> "<message>"'
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exit(1)
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addr = socket.gethostbyname(sys.argv[1])
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iface = get_if()
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pkt = Ether(src=get_if_hwaddr(iface), dst="ff:ff:ff:ff:ff:ff") / IP(
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dst=addr, options = IPOption_MRI(count=0,
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swtraces=[])) / UDP(
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dport=4321, sport=1234) / sys.argv[2]
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# pkt = Ether(src=get_if_hwaddr(iface), dst="ff:ff:ff:ff:ff:ff") / IP(
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# dst=addr, options = IPOption_MRI(count=2,
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# swtraces=[SwitchTrace(swid=0,qdepth=0), SwitchTrace(swid=1,qdepth=0)])) / UDP(
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# dport=4321, sport=1234) / sys.argv[2]
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pkt.show2()
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#hexdump(pkt)
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try:
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for i in range(int(sys.argv[3])):
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sendp(pkt, iface=iface)
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sleep(1)
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except KeyboardInterrupt:
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raise
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if __name__ == '__main__':
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main()
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