vpp - Vector Packet Processing

Age	Commit message (Expand)	Author	Files	Lines
2017-11-03	Add C++ files to Doxygen	Chris Luke	1	-1/+1
2017-09-28	General documentation updates	Chris Luke	1	-1/+2
2016-09-21	Refactor pre-Doxy siphon scripts; VPP-396	Chris Luke	1	-0/+3
2016-09-21	Move doxytags file to html output directory	Chris Luke	1	-1/+1
2016-09-07	VPP-346 Improve Doxygen include path mechanism	Chris Luke	1	-1/+1
2016-09-06	VPP-346 More VPP doc fixes	Chris Luke	1	-2/+3
2016-09-01	VPP-346 A swathe of doc fixes	Chris Luke	1	-1/+3
2016-08-31	VPP-221 CLI auto-documentation infrastructure	Chris Luke	1	-0/+13
2016-08-06	Add DPDK definition to DOXYGEN	Keith Burns (alagalah)	1	-2/+3
2016-07-26	Fix missing include dirs in doxygen	Chris Luke	1	-1/+1
2016-07-07	Add some doxygen tags	Dave Barach	1	-0/+1
2016-05-15	VPP-62 Add a doxy filter to enable vpe.api doc	Chris Luke	1	-3/+5
2016-05-13	VPP-57 Add Doxygen to VPP	Chris Luke	1	-0/+2433

#!/usr/bin/env python # Copyright (c) 2016 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. from scapy.all import Ether, IP, ICMP from resources.libraries.python.PacketVerifier \ import Interface, create_gratuitous_arp_request, auto_pad, checksum_equal from resources.libraries.python.TrafficScriptArg import TrafficScriptArg def check_ttl(ttl_begin, ttl_end, ttl_diff): if ttl_begin != ttl_end + ttl_diff: raise RuntimeError( "TTL changed from {} to {} but decrease by {} expected" .format(ttl_begin, ttl_end, ttl_diff)) def ckeck_packets_equal(pkt_send, pkt_recv): pkt_send_raw = auto_pad(pkt_send) pkt_recv_raw = auto_pad(pkt_recv) if pkt_send_raw != pkt_recv_raw: print "Sent: {}".format(pkt_send_raw.encode('hex')) print "Received: {}".format(pkt_recv_raw.encode('hex')) print "Sent:" pkt_send.show2() print "Received:" pkt_recv.show2() raise RuntimeError("Sent packet doesn't match received packet") def main(): args = TrafficScriptArg(['src_mac', 'dst_mac', 'src_ip', 'dst_ip', 'hops', 'first_hop_mac', 'is_dst_tg']) src_if_name = args.get_arg('tx_if') dst_if_name = args.get_arg('rx_if') is_dst_tg = True if args.get_arg('is_dst_tg') == 'True' else False src_mac = args.get_arg('src_mac') first_hop_mac = args.get_arg('first_hop_mac') dst_mac = args.get_arg('dst_mac') src_ip = args.get_arg('src_ip') dst_ip = args.get_arg('dst_ip') hops = int(args.get_arg('hops')) if is_dst_tg and (src_if_name == dst_if_name): raise RuntimeError( "Source interface name equals destination interface name") src_if = Interface(src_if_name) src_if.send_pkt(str(create_gratuitous_arp_request(src_mac, src_ip))) if is_dst_tg: dst_if = Interface(dst_if_name) dst_if.send_pkt(str(create_gratuitous_arp_request(dst_mac, dst_ip))) pkt_req_send = (Ether(src=src_mac, dst=first_hop_mac) / IP(src=src_ip, dst=dst_ip) / ICMP()) src_if.send_pkt(pkt_req_send) if is_dst_tg: pkt_req_recv = dst_if.recv_pkt() if pkt_req_recv is None: raise RuntimeError('Timeout waiting for packet') check_ttl(pkt_req_send[IP].ttl, pkt_req_recv[IP].ttl, hops) pkt_req_send_mod = pkt_req_send.copy() pkt_req_send_mod[IP].ttl = pkt_req_recv[IP].ttl del pkt_req_send_mod[IP].chksum # update checksum ckeck_packets_equal(pkt_req_send_mod[IP], pkt_req_recv[IP]) pkt_resp_send = (Ether(src=dst_mac, dst=pkt_req_recv.src) / IP(src=dst_ip, dst=src_ip) / ICMP(type=0)) # echo-reply dst_if.send_pkt(pkt_resp_send) pkt_resp_recv = src_if.recv_pkt() if pkt_resp_recv is None: raise RuntimeError('Timeout waiting for packet') if is_dst_tg: check_ttl(pkt_resp_send[IP].ttl, pkt_resp_recv[IP].ttl, hops) pkt_resp_send_mod = pkt_resp_send.copy() pkt_resp_send_mod[IP].ttl = pkt_resp_recv[IP].ttl del pkt_resp_send_mod[IP].chksum # update checksum ckeck_packets_equal(pkt_resp_send_mod[IP], pkt_resp_recv[IP]) if not pkt_resp_recv.haslayer(IP): raise RuntimeError('Received packet does not contain IPv4 header: {}'. format(pkt_resp_recv.__repr__())) if pkt_resp_recv[IP].src != pkt_req_send[IP].dst: raise RuntimeError( 'Received IPv4 packet contains wrong src IP address, ' '{} instead of {}'.format(pkt_resp_recv[IP].src, pkt_req_send[IP].dst)) if pkt_resp_recv[IP].dst != pkt_req_send[IP].src: raise RuntimeError( 'Received IPv4 packet contains wrong dst IP address, ' '{} instead of {}'.format(pkt_resp_recv[IP].dst, pkt_req_send[IP].src)) # verify IPv4 checksum copy = pkt_resp_recv.copy() chksum = copy[IP].chksum del copy[IP].chksum tmp = IP(str(copy[IP])) if not checksum_equal(tmp.chksum, chksum): raise RuntimeError('Received IPv4 packet contains invalid checksum, ' '{} instead of {}'.format(chksum, tmp.chksum)) if not pkt_resp_recv[IP].haslayer(ICMP): raise RuntimeError( 'Received IPv4 packet does not contain ICMP header: {}'. format(pkt_resp_recv[IP].__repr__())) # verify ICMP checksum copy = pkt_resp_recv.copy() chksum = copy[IP][ICMP].chksum del copy[IP][ICMP].chksum tmp = ICMP(str(copy[IP][ICMP])) if not checksum_equal(tmp.chksum, chksum): raise RuntimeError('Received ICMP packet contains invalid checksum, ' '{} instead of {}'.format(chksum, tmp.chksum)) pkt_req_send_mod = pkt_req_send.copy() pkt_req_send_mod[IP][ICMP].type = pkt_resp_recv[IP][ICMP].type del pkt_req_send_mod[IP][ICMP].chksum # update checksum ckeck_packets_equal(pkt_req_send_mod[IP][ICMP], pkt_resp_recv[IP][ICMP]) if __name__ == "__main__": main()