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++ unchecked checksums

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Nico Schottelius 2019-03-05 21:22:55 +01:00
parent e4dd6eee93
commit 12097d0085
2 changed files with 9 additions and 4 deletions
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5
doc/plan.org
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@ -61,6 +61,11 @@
| | - send back to switch | |
| | - test with host | |
| | | |
| 2019-03-06 | Meet Laurent #3 | |
| | - Checksum's in scapy | |
| | - Python2 ipaddress fix (import future) | |
| | - P4 checksum_with_payload | |
| | | |
| | | |
| 2019-03-08 | NAT46 1:1 table ICMP, ICMPv6 working | |
| | Will need some switch local ip addresses | |

8
p4app/controller.py
View file

@ -248,10 +248,11 @@ class L2Controller(object):
i2 = ICMPv6ND_NA(S=1, R=0, tgt=src_addr)
i3 = ICMPv6NDOptDstLLAddr(lladdr=src_mac)
# Force scapy to recalculate ??
i.chksum = None
answer = e / i / i2 / i3
# Let scapy recalc checksum (try3)
answer = answer.__class__(str(answer))
self.send_pkg(answer)
def send_pkg(self, pkg):
@ -283,7 +284,6 @@ class L2Controller(object):
elif cpu_header.task == self.task['ICMP6_GENERAL']:
log.info("Replying to ICMP packet")
else:
print("Broken pkg: {}".format(pkg.__repr__()))
return