# RNDIS Host - IPERF

## Overview

- the sample shows the USB RNDIS Host is connected to luat 4G module (air780e module) or ec20 module to network and iperf for speed measurement


## Board Setting

- development board interconnected to air780e or ec20 module throught port USB0.
- development board(RNDIS Host) DEBUG port or console port connect to PC.

## Example of output log

- download the programs to the development board, and connect air780e, the board will show logs as follows
- if not, check whether the upper module is powered on

```console
Start rndis host iperf task...
[I/USB] EHCI HCIVERSION:0100
[I/USB] EHCI HCSPARAMS:010011
[I/USB] EHCI HCCPARAMS:0006
[I/USB] New high-speed device on Hub 1, Port 1 connected
[I/USB] New device found,idVendor:19d1,idProduct:0001,bcdDevice:0200
[I/USB] The device has 8 interfaces
[I/USB] Enumeration success, start loading class driver
[I/USB] Loading rndis class driver
[I/USB] Ep=01 Attr=02 Mps=512 Interval=00 Mult=00
[I/USB] Ep=82 Attr=02 Mps=512 Interval=00 Mult=00
[I/USB] rndis init success
[I/USB] rndis query OID_GEN_SUPPORTED_LIST success,oid num :22
[W/USB] Ignore rndis query iod:00010101
[W/USB] Ignore rndis query iod:00010102
[W/USB] Ignore rndis query iod:00010103
[W/USB] Ignore rndis query iod:00010104
[I/USB] rndis query iod:00010106 success
[I/USB] rndis query iod:00010107 success
[W/USB] Ignore rndis query iod:0001010a
[W/USB] Ignore rndis query iod:0001010b
[W/USB] Ignore rndis query iod:0001010c
[W/USB] Ignore rndis query iod:0001010d
[W/USB] Ignore rndis query iod:00010116
[W/USB] Ignore rndis query iod:0001010e
[W/USB] Ignore rndis query iod:00010111
[W/USB] Ignore rndis query iod:00010112
[W/USB] Ignore rndis query iod:00010113
[I/USB] rndis query iod:00010114 success
[W/USB] Ignore rndis query iod:00010115
[I/USB] rndis query iod:01010101 success
[I/USB] rndis query iod:01010102 success
[W/USB] Ignore rndis query iod:01010103
[I/USB] rndis query iod:01010104 success
[W/USB] Ignore rndis query iod:01010105
[I/USB] rndis set OID_GEN_CURRENT_PACKET_FILTER success
[I/USB] rndis set OID_802_3_MULTICAST_LIST success
[I/USB] Register RNDIS Class:/dev/rndis
[E/USB] do not support Class:0x0a,Subclass:0x00,Protocl:0x00
[E/USB] do not support Class:0x02,Subclass:0x02,Protocl:0x01
[E/USB] do not support Class:0x0a,Subclass:0x00,Protocl:0x00
[E/USB] do not support Class:0x02,Subclass:0x02,Protocl:0x01
[E/USB] do not support Class:0x0a,Subclass:0x00,Protocl:0x00
[E/USB] do not support Class:0x02,Subclass:0x02,Protocl:0x01
[E/USB] do not support Class:0x0a,Subclass:0x00,Protocl:0x00

*********************************************************************************

input the iperf tcp server IP or URL address and press the enter key to end

if want to terminate midway, please press the esc key

*********************************************************************************

 IPv4 Address     : 192.168.10.2
 IPv4 Subnet mask : 255.255.255.0
 IPv4 Gateway     : 192.168.10.1

```

- when the EC20 module is connected, the following information is printed, indicating that the EC20 initialization is successful and the IP is assigned.

```console

[I/USB] EHCI HCIVERSION:0100
[I/USB] EHCI HCSPARAMS:010011
[I/USB] EHCI HCCPARAMS:0006
[I/USB] New high-speed device on Hub 1, Port 1 connected
[I/USB] New device found,idVendor:2c7c,idProduct:0125,bcdDevice:0318
[I/USB] The device has 6 interfaces
[I/USB] Enumeration success, start loading class driver
[E/USB] do not support Class:0xff,Subclass:0xff,Protocl:0xff
[E/USB] do not support Class:0xff,Subclass:0x00,Protocl:0x00
[E/USB] do not support Class:0xff,Subclass:0x00,Protocl:0x00
[E/USB] do not support Class:0xff,Subclass:0x00,Protocl:0x00
[I/USB] Loading cdc_ecm class driver
[I/USB] CDC ECM mac address 9e: 28: 59: e0: 00: 00
[I/USB] CDC ECM Max Segment Size:1280
[I/USB] Ep=89 Attr=03 Mps=16 Interval=09 Mult=00
[I/USB] Ep=88 Attr=02 Mps=512 Interval=00 Mult=00
[I/USB] Ep=05 Attr=02 Mps=512 Interval=00 Mult=00
[I/USB] Select cdc ecm altsetting: 1
[I/USB] Set CDC ECM packet filter:000c
[I/USB] Register CDC ECM Class:/dev/cdc_ether
[E/USB] do not support Class:0x0a,Subclass:0x00,Protocl:0x00

*********************************************************************************

input the iperf tcp server IP or URL address and press the enter key to end

if want to terminate midway, please press the esc key

*********************************************************************************

 IPv4 Address     : 192.168.225.27
 IPv4 Subnet mask : 255.255.255.0
 IPv4 Gateway     : 192.168.225.1

```

- After that, you need to enter the IP address or domain name of the iperf server in the terminal, such as 11.23.63.183, then press enter key

```console

clinet connecting to 11.23.63.183, TCP port 5001

iperf report: type=1, remote: 11.23.63.183:5001, total bytes: 1125684, duration in ms: 10035, kbits/s: 904

```