# Test result show below:
```
[ 59.778342] RTcfg: rtcfg_do_main_event() rtdev=1,
event=RTCFG_CMD_ADD, stateG
Waiting for all slaves...[ 59.868079] RTcfg: rtcfg_do_main_event()
rtdev=1, eG
[ 60.377777] RTcfg: error -11 while sending stage 1 frame
```
We change the e1000_main.c line with :
```
netdev = rt_alloc_etherdev(sizeof(struct e1000_adapter), 48);
````
to
```
netdev = rt_alloc_etherdev(sizeof(struct e1000_adapter), 1024);
```
This problem was fixed, but the number of rtskb pool size should be a
meaningful
value, not a magic. Plea check it. The test process and env show as bellow.
--------------------------------------------------------------------------------
# Test envirnment:
* System version:
Distributor ID: Debian
Description: Debian GNU/Linux 9.5 (stretch)
Release: 9.5
Codename: stretch
* QEMU version:
/usr/bin/qemu-system-x86_64 --version
QEMU emulator version 2.12.0 (Debian 1:2.12+dfsg-3)
Copyright (c) 2003-2017 Fabrice Bellard and the QEMU Project developers
* Used VM Script: qemu-x86.sh
/usr/bin/qemu-system-x86_64 \
-m 1G \
-kernel bzImage \
-append "root=/dev/sda rdinit=/sbin/init console=ttyS0 115200
nokaslr" \
-hda ./rootfs6.ext2 \
-nographic \
-device e1000,netdev=dev0,mac='00:00:00:01:00:01' \
-netdev tap,ifname=tap0,id=dev0,script=no,downscript=no,vhost=on
* Xenomai version: xenomai-3.0.7.tar.bz2
* I-Pipe patch version: ipipe-core-4.9.51-x86-5.patch
* Kernel version: linux-4.9.51
The rtnet master config file [rtnet.conf] was used as following :
```
# This file is usually located in <PREFIX>/etc/rtnet.conf
# Please adapt it to your sdriverystem.
# This configuration file is used with the rtnet script.
# RTnet installation path
prefix="/usr/"
exec_prefix="${prefix}"
RTNET_MOD="/root"
RTIFCONFIG="${exec_prefix}/sbin/rtifconfig"
RTCFG="${exec_prefix}/sbin/rtcfg"
TDMACFG="${exec_prefix}/sbin/tdmacfg"
# Module suffix: ".o" for 2.4 kernels, ".ko" for later versions
MODULE_EXT=".ko"
# RT-NIC driver
#RT_DRIVER="rt_e1000"
RT_DRIVER="rt_8139too"
RT_DRIVER_OPTIONS=""
# PCI addresses of RT-NICs to claim (format: 0000:00:00.0)
# If both Linux and RTnet drivers for the same hardware are
loaded, this
# list instructs the start script to rebind the given PCI
devices, detaching
# from their Linux driver, attaching it to the RT driver above.
Example:
# REBIND_RT_NICS="0000:00:19.0 0000:01:1d.1"
REBIND_RT_NICS=""
# IP address and netmask of this station
# The TDMA_CONFIG file overrides these parameters for masters and
backup
# masters. Leave blank if you do not use IP addresses or if this
station is
# intended to retrieve its IP from the master based on its MAC
address.
IPADDR="10.0.0.3"
NETMASK=""
# Start realtime loopback device ("yes" or "no")
RT_LOOPBACK="yes"
# Use the following RTnet protocol drivers
RT_PROTOCOLS="udp packet"
# Start capturing interface ("yes" or "no")
RTCAP="no"
# Common RTcfg stage 2 config data (master mode only)
# The TDMA_CONFIG file overrides this parameter.
STAGE_2_SRC=""
# Stage 2 config data destination file (slave mode only)
STAGE_2_DST=""
# Command to be executed after stage 2 phase (slave mode only)
STAGE_2_CMDS=""
# TDMA mode of the station ("master" or "slave")
# Start backup masters in slave mode, it will then be switched to
master
# mode automatically during startup.
TDMA_MODE="master"
# Master parameters
# Simple setup: List of TDMA slaves
TDMA_SLAVES="10.0.0.4"
# Simple setup: Cycle time in microsecond
TDMA_CYCLE="5000"
# Simple setup: Offset in microsecond between TDMA slots
TDMA_OFFSET="200"
# Advanced setup: Config file containing all TDMA station parameters
# To use this mode, uncomment the following line and disable the
# three master parameters above (SLAVES, CYCLE, and OFFSET).
TDMA_CONFIG="./tdma.conf"
```
