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#!/usr/bin/env python
# Copyright (c) 2015 Cisco and/or its affiliates.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at:
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import sys, time
from scapy.all import *
import mapalgs
ifname = "vpp-tap"
loc_v4_mac = "aa:aa:aa:aa:aa:a4"
loc_v6_mac = "aa:aa:aa:aa:aa:a6"
vpp_mac = "aa:aa:aa:aa:00:00"
map_t = 1
fragsize = 0
map_mtu = 200
def mac_to_vppmac(mac):
mac = mac.replace(':', '')
return mac[0:4]+"."+mac[4:8]+"."+mac[8:12]
map = mapalgs.MapCalc( rulev6 = 'bbbb::/32',
rulev4 = '20.0.0.0/24',
ratio = 256);
dmr = mapalgs.DmrCalc('cccc:bbbb::/96')
ICMP_TYPES_CODES = {
0: 0,
3: 15,
4: 0,
5: 3,
6: 0,
8: 0,
9: 0,
10: 0,
11: 1,
12: 2,
13: 0,
14: 0,
15: 0,
16: 0,
17: 0,
18: 0
}
ICMP6_TYPES_CODES = {
1: 7,
2: 0,
3: 1,
4: 3,
}
def net_conf():
c = ""
c += "tap connect "+ifname+" hwaddr "+mac_to_vppmac(vpp_mac)+" \n"
c += "set int state tap-0 up \n"
c += "set ip6 neighbor tap-0 2001:f00d::1 "+mac_to_vppmac(loc_v6_mac)+" \n"
c += "set ip arp tap-0 10.0.0.1 "+mac_to_vppmac(loc_v4_mac)+" \n"
c += "ip route add ::/0 via 2001:f00d::1 tap-0 \n"
c += "ip route add 0.0.0.0/0 via 10.0.0.1 tap-0 \n"
return c
def conf():
c = net_conf()
c += "map add domain ip4-pfx 20.0.0.0/24 ip6-pfx bbbb::/32 ea-bits-len 16 psid-offset 6 psid-len 8"
if map_mtu != 0:
c += " mtu "+str(map_mtu)
if map_t:
c += " ip6-src cccc:bbbb::/96 map-t"
else:
c += " ip6-src cccc:bbbb::ffff"
c += "\n"
return c
def send_packet(ip_header, ip_content):
print("Send packet")
if fragsize != 0:
if ip_header.version == 4:
frags = fragment(ip_header/ip_content, fragsize=fragsize)
for f in frags:
print("Fragmented IPv4 packet")
sendp(Ether(dst=vpp_mac, src=loc_v4_mac)/f, iface=ifname)
elif ip_header.version == 6:
frags = fragment6(ip_header/IPv6ExtHdrFragment()/ip_content, fragsize)
for f in frags:
print("Fragmented IPv6 packet")
sendp(Ether(dst=vpp_mac, src=loc_v6_mac)/f, iface=ifname)
else:
sendp(Ether(dst=vpp_mac)/ip_header/ip_content, iface=ifname)
def send_packet_frag_inner(packet, inner_header, inner_content):
print("Send packet with inner ICMP packet")
if fragsize != 0:
if packet.version == 4:
frags = fragment(inner_header/inner_content, fragsize=fragsize)
for f in frags:
print("Fragmented IPv4 inner packet")
sendp(Ether(dst=vpp_mac, src=loc_v4_mac)/packet/f, iface=ifname)
elif packet.version == 6:
frags = fragment6(inner_header/IPv6ExtHdrFragment()/inner_content, fragsize)
for f in frags:
print("Fragmented IPv6 inner packet")
sendp(Ether(dst=vpp_mac, src=loc_v6_mac)/packet/f, iface=ifname)
else:
sendp(Ether(dst=vpp_mac)/packet/inner_header/inner_content, iface=ifname)
def sendv6udp(src, dst, port):
psid = map.gen_psid(port)
ceaddr = str(map.get_mapce_addr(src, psid))
dst = str(dmr.embed_6052addr(dst))
send_packet(IPv6(dst=dst, src=ceaddr), UDP(sport=port)/('X'*900))
def sendv6tcp(src, dst, port):
psid = map.gen_psid(port)
ceaddr = str(map.get_mapce_addr(src, psid))
dst = str(dmr.embed_6052addr(dst))
send_packet(IPv6(dst=dst, src=ceaddr), TCP(sport=port)/('X'*900))
def sendv4udp(src, dst, port):
send_packet(IP(dst=dst, src=src), UDP(dport=port)/('X'*900))
def sendv4tcp(src, dst, port):
send_packet(IP(dst=dst, src=src), TCP(dport=port)/('X'*900))
def sendv6ping(src, dst, id):
psid = map.gen_psid(id)
ceaddr = str(map.get_mapce_addr(src, psid))
dst = str(dmr.embed_6052addr(dst))
send_packet(IPv6(dst=dst, src=ceaddr), ICMPv6EchoRequest(id=id, data='A'*500))
send_packet(IPv6(dst=dst, src=ceaddr), ICMPv6EchoReply(id=id, data='A'*500))
def sendv4ping(src, dst, id):
send_packet(IP(dst=dst, src=src), ICMP(id=id, type=0)/('X'*500))
send_packet(IP(dst=dst, src=src), ICMP(id=id, type=8)/('X'*500))
def sendv4icmperr(src, dst, type, code, port, inner_src, inner_dst, payload_length):
inner = IP(dst=inner_dst, src=inner_src)/TCP(sport=port, dport=8888)/('X'*payload_length)
send_packet_frag_inner(IP(dst=dst, src=src)/ICMP(type=type, code=code), IP(dst=inner_dst, src=inner_src), TCP(sport=port, dport=8888)/('X'*payload_length))
#send_packet(IP(dst=dst, src=src)/ICMP(type=type, code=code)/inner)
def sendv6icmperr(src, dst, type, code, port, payload_length):
psid = map.gen_psid(port)
src = str(map.get_mapce_addr(src, psid))
dst = str(dmr.embed_6052addr(dst))
inner_header = IPv6(dst=src, src=dst)
inner_content = TCP(sport=8888, dport=port)/('X'*payload_length)
send_packet_frag_inner(IPv6(dst=dst, src=src)/ICMPv6DestUnreach(type=type, code=code), inner_header, inner_content)
#send_packet(IPv6(dst=dst, src=src)/ICMPv6DestUnreach(type=type, code=code)/inner)
def sendv4icmp_errors(src, dst, port, inner_src, inner_dst, payload_length):
for type in ICMP_TYPES_CODES:
for code in range(0, ICMP_TYPES_CODES[type] + 1):
sendv4icmperr(src, dst, type, code, port, inner_src, inner_dst, payload_length)
#sendv4icmperr(src, dst, type, ICMP_TYPES_CODES[type] + 2, port, inner_src, inner_dst, payload_length)
#sendv4icmperr(src, dst, type, 255, port, inner_src, inner_dst, payload_length)
#sendv4icmperr(src, dst, 1, 0, port, inner_src, inner_dst, payload_length)
#sendv4icmperr(src, dst, 2, 10, port, inner_src, inner_dst, payload_length)
#sendv4icmperr(src, dst, 255, 255, port, inner_src, inner_dst, payload_length)
#TODO: Check wrong paramater with different pointer values
def sendv6icmp_errors(src, dst, port, payload_length):
for type in ICMP6_TYPES_CODES:
for code in range(0, ICMP6_TYPES_CODES[type] + 1):
sendv6icmperr(src, dst, type, code, port, payload_length)
#sendv6icmperr(src, dst, type, ICMP6_TYPES_CODES[type] + 2, port, payload_length)
#sendv6icmperr(src, dst, type, 255, port, payload_length)
def traffic():
delay = 2.0
while 1:
#sendp(Ether(dst="bb:bb:bb:bb:bb:b4")/IP(dst="20.0.0.1")/UDP(chksum=0)/('X'*900), iface="vpp-tapv4")
#sendp(Ether(dst="bb:bb:bb:bb:bb:b6")/IPv6(dst="cccc:bbbb::a000:0001")/ICMPv6EchoRequest()/('X'*900), iface="vpp-tapv6")
#sendp(Ether(dst="bb:bb:bb:bb:bb:b6")/IPv6(dst="cccc:bbbb::a000:0001")/UDP()/('X'*900), iface="vpp-tapv6")
sendv6udp("20.0.0.1", "10.0.0.1", 12001)
sendv6tcp("20.0.0.1", "10.0.0.1", 12002)
sendv4udp("10.0.0.1", "20.0.0.1", 12003)
sendv4tcp("10.0.0.1", "20.0.0.1", 12004)
sendv6ping("20.0.0.1", "10.0.0.1", 12005)
sendv4ping("10.0.0.1", "20.0.0.1", 12006)
sendv4icmp_errors("10.0.0.1", "20.0.0.1", 12006, "20.0.0.1", "10.0.0.1", 500)
sendv4icmp_errors("10.0.0.1", "20.0.0.1", 12006, "20.0.0.1", "10.0.0.1", 1500)
sendv6icmp_errors("20.0.0.1", "10.0.0.1", 12006, 500)
time.sleep(delay)
delay *= 0.9
if len(sys.argv) <= 1:
print("Usage: conf|traffic")
exit(1)
if sys.argv[1] == "conf":
print(conf())
elif sys.argv[1] == "traffic":
traffic()
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