diff options
Diffstat (limited to 'nfvbench/traffic_gen/traffic_utils.py')
| -rw-r--r-- | nfvbench/traffic_gen/traffic_utils.py | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/nfvbench/traffic_gen/traffic_utils.py b/nfvbench/traffic_gen/traffic_utils.py index c3428a4..f856267 100644 --- a/nfvbench/traffic_gen/traffic_utils.py +++ b/nfvbench/traffic_gen/traffic_utils.py @@ -16,13 +16,18 @@ import bitmath from nfvbench.utils import multiplier_map -imix_avg_l2_size = None +# IMIX frame size including the 4-byte FCS field +IMIX_L2_SIZES = [64, 594, 1518] +IMIX_RATIOS = [7, 4, 1] +# weighted average l2 frame size includng the 4-byte FCS +IMIX_AVG_L2_FRAME_SIZE = sum( + [1.0 * imix[0] * imix[1] for imix in zip(IMIX_L2_SIZES, IMIX_RATIOS)]) / sum(IMIX_RATIOS) def convert_rates(l2frame_size, rate, intf_speed): """Convert a given rate unit into the other rate units. - l2frame_size: size of the L2 frame in bytes or 'IMIX' + l2frame_size: size of the L2 frame in bytes (includes 32-bit FCS) or 'IMIX' rate: a dict that has at least one of the following key: 'rate_pps', 'rate_bps', 'rate_percent' with the corresponding input value @@ -59,8 +64,13 @@ def convert_rates(l2frame_size, rate, intf_speed): def get_average_packet_size(l2frame_size): + """Retrieve the average L2 frame size + + l2frame_size: an L2 frame size in bytes (including FCS) or 'IMIX' + return: average l2 frame size inlcuding the 32-bit FCS + """ if l2frame_size.upper() == 'IMIX': - return imix_avg_l2_size + return IMIX_AVG_L2_FRAME_SIZE return float(l2frame_size) |