_Performance Testing PASS_

Branch: dpdk-next-net

e765919bf5e9579ae1fba67b27680e40c530cd05 --> performance testing pass

Test environment and result as below:

Ubuntu 18.04
Kernel: 4.15.0-generic
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     | -0.264                              |
+------------+---------+-------------------------------------+
| 128        | 256     | -0.035                              |
+------------+---------+-------------------------------------+
| 256        | 256     | -0.075                              |
+------------+---------+-------------------------------------+
| 512        | 256     | -0.027                              |
+------------+---------+-------------------------------------+
| 1024       | 256     | -0.003                              |
+------------+---------+-------------------------------------+
| 1518       | 256     | -0.023                              |
+------------+---------+-------------------------------------+

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     | -0.118                              |
+------------+---------+-------------------------------------+
| 128        | 256     | -0.067                              |
+------------+---------+-------------------------------------+
| 256        | 256     | 0.032                               |
+------------+---------+-------------------------------------+
| 512        | 256     | 0.029                               |
+------------+---------+-------------------------------------+
| 1024       | 256     | -0.001                              |
+------------+---------+-------------------------------------+
| 1518       | 256     | -0.002                              |
+------------+---------+-------------------------------------+

Ubuntu 18.04
Kernel: 4.15.0-generic
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     | 0.154                               |
+------------+---------+-------------------------------------+
| 128        | 256     | -0.257                              |
+------------+---------+-------------------------------------+
| 256        | 256     | 0.013                               |
+------------+---------+-------------------------------------+
| 512        | 256     | -0.013                              |
+------------+---------+-------------------------------------+
| 1024       | 256     | 0                                   |
+------------+---------+-------------------------------------+
| 1518       | 256     | -0.010                              |
+------------+---------+-------------------------------------+

To view detailed results, visit:
https://lab.dpdk.org/results/dashboard/tarballs/7946/

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