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| author |   louie.long <longyu805@163.com> | 2018-03-16 15:11:22 +0800 |
|---|---|---|
| committer | louie.long <longyu805@163.com> | 2018-03-16 15:11:22 +0800 |
| commit | 8450089d5aa09e1c4de4b5701f5210b8f8f7dfdc (patch) | |
| tree | 0e3355000104c8822775d4a3607615ad9c70ade9 | |
| parent | ca7bc608e72076dba0b9db50b473ab0d0d18c0e6 (diff) | |
[NFVBENCH-74] packet payload length without vlan
fix packet playload length without vlan tag, ensure that
the minimum packet size is 64 bytes with or without the vlan tag
Change-Id: Iabea46756905e3b16791436642cdca58ec8fed6f
Signed-off-by: louie.long <longyu805@163.com>
| -rw-r--r-- | nfvbench/traffic_gen/trex.py | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/nfvbench/traffic_gen/trex.py b/nfvbench/traffic_gen/trex.py index e42afce..1e7c133 100644 --- a/nfvbench/traffic_gen/trex.py +++ b/nfvbench/traffic_gen/trex.py @@ -136,13 +136,16 @@ class TRex(AbstractTrafficGenerator): return result def create_pkt(self, stream_cfg, l2frame_size): - # 46 = 14 (Ethernet II) + 4 (CRC Checksum) + 20 (IPv4) + 8 (UDP) - payload = 'x' * (max(64, int(l2frame_size)) - 46) pkt_base = Ether(src=stream_cfg['mac_src'], dst=stream_cfg['mac_dst']) if stream_cfg['vlan_tag'] is not None: + # 50 = 14 (Ethernet II) + 4 (Vlan tag) + 4 (CRC Checksum) + 20 (IPv4) + 8 (UDP) pkt_base /= Dot1Q(vlan=stream_cfg['vlan_tag']) + payload = 'x' * (max(64, int(l2frame_size)) - 50) + else: + # 46 = 14 (Ethernet II) + 4 (CRC Checksum) + 20 (IPv4) + 8 (UDP) + payload = 'x' * (max(64, int(l2frame_size)) - 46) udp_args = {} if stream_cfg['udp_src_port']: |