_Performance Testing PASS_

Branch: dpdk-next-net-brcm

318f1627fcbe01ce3008bed0ac7da02816eda921 --> performance testing pass

Test environment and result as below:

Ubuntu 18.04
Kernel: 4.15.0-generic
GCC: 7.4
NIC: Mellanox ConnectX-4 Lx 25000 Mbps
Target: x86_64-native-linuxapp-gcc
Fail/Total: 0/6

Detail performance results: 
+------------+---------+-------------------------------------+
| frame_size | txd/rxd | throughput difference from expected |
+============+=========+=====================================+
| 64         | 256     | 0.280                               |
+------------+---------+-------------------------------------+
| 128        | 256     | 0.088                               |
+------------+---------+-------------------------------------+
| 256        | 256     | 0.039                               |
+------------+---------+-------------------------------------+
| 512        | 256     | -0.012                              |
+------------+---------+-------------------------------------+
| 1024       | 256     | 0.006                               |
+------------+---------+-------------------------------------+
| 1518       | 256     | 0.001                               |
+------------+---------+-------------------------------------+

https://lab.dpdk.org/results/dashboard/tarballs/7392/

UNH-IOL DPDK Performance Test Lab

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