diff options
| -rw-r--r-- | ryu/lib/packet/udp.py | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/ryu/lib/packet/udp.py b/ryu/lib/packet/udp.py index 2944f8a4..518f4fc3 100644 --- a/ryu/lib/packet/udp.py +++ b/ryu/lib/packet/udp.py @@ -17,7 +17,6 @@ import struct from . import packet_base from . import packet_utils -import ipv4 class udp(packet_base.PacketBase): @@ -45,10 +44,8 @@ class udp(packet_base.PacketBase): h = struct.pack(udp._PACK_STR, self.src_port, self.dst_port, self.total_length, self.csum) if self.csum == 0: - ph = struct.pack('!IIBBH', prev.src, prev.dst, 0, 17, - self.total_length) - f = ph + h + payload - self.csum = packet_utils.checksum(f) + self.csum = packet_utils.checksum_ip( + prev, self.total_length, h + payload) h = struct.pack(udp._PACK_STR, self.src_port, self.dst_port, self.total_length, self.csum) return h |