_Performance Testing PASS_

Branch: dpdk-next-net

67438840ac9b48d1aec6369f41c610e4cf676d78 --> performance testing pass

Test environment and result as below:

Ubuntu 18.04
Kernel: 4.15.0-generic
Compiler: gcc 7.4
NIC: Mellanox ConnectX-5 100000 Mbps
Target: x86_64-native-linuxapp-gcc
Fail/Total: 0/6

Detail performance results: 
+------------+---------+-------------------------------------+
| frame_size | txd/rxd | throughput difference from expected |
+============+=========+=====================================+
| 64         | 256     | 0.410                               |
+------------+---------+-------------------------------------+
| 128        | 256     | 0.088                               |
+------------+---------+-------------------------------------+
| 256        | 256     | -0.106                              |
+------------+---------+-------------------------------------+
| 512        | 256     | 0.179                               |
+------------+---------+-------------------------------------+
| 1024       | 256     | 0.109                               |
+------------+---------+-------------------------------------+
| 1518       | 256     | 0.003                               |
+------------+---------+-------------------------------------+

Ubuntu 18.04
Kernel: 4.15.0-generic
Compiler: 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     | -0.389                              |
+------------+---------+-------------------------------------+
| 128        | 256     | -0.144                              |
+------------+---------+-------------------------------------+
| 256        | 256     | -0.157                              |
+------------+---------+-------------------------------------+
| 512        | 256     | -0.062                              |
+------------+---------+-------------------------------------+
| 1024       | 256     | 0.008                               |
+------------+---------+-------------------------------------+
| 1518       | 256     | 0.004                               |
+------------+---------+-------------------------------------+

Ubuntu 18.04
Kernel: 4.15.0-generic
Compiler: gcc 7.4
NIC: Mellanox ConnectX-4 Lx 40000 Mbps
Target: x86_64-native-linuxapp-gcc
Fail/Total: 0/6

Detail performance results: 
+------------+---------+-------------------------------------+
| frame_size | txd/rxd | throughput difference from expected |
+============+=========+=====================================+
| 64         | 256     | -0.592                              |
+------------+---------+-------------------------------------+
| 128        | 256     | -0.464                              |
+------------+---------+-------------------------------------+
| 256        | 256     | 0.095                               |
+------------+---------+-------------------------------------+
| 512        | 256     | 0                                   |
+------------+---------+-------------------------------------+
| 1024       | 256     | 0.017                               |
+------------+---------+-------------------------------------+
| 1518       | 256     | 0                                   |
+------------+---------+-------------------------------------+

To view detailed results, visit:
https://lab.dpdk.org/results/dashboard/tarballs/11981/

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