mac80211_hwsim

Changing mac80211_hwsim

Please follow the steps below if you want to modify mac80211_hwsim:

• Check the Linux Kernel version you have:

  ~$ uname -a
  Linux alpha-Inspiron-5480 4.15.0-65-generic #74-Ubuntu SMP Tue Sep 17 17:06:04 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
  

• Open mac80211_hwsim.c through your favorite web browser

  https://github.com/torvalds/linux/blob/master/drivers/net/wireless/mac80211_hwsim.c
  

• Then you need to select the branch which matches with the kernel version you have - in my case v4.15.

• Now you need to save both mac80211_hwsim.c and mac80211_hwsim.h and proceed with the changes in mac80211_hwsim.c on locally.

• and compile your mac80211_hwsim with a Makefile (consider the content below):

obj-m += mac80211_hwsim.o

all:
        make -C /lib/modules/$(shell uname -r)/build M=$(PWD) modules

clean:
        make -C /lib/modules/$(shell uname -r)/build M=$(PWD) clean

• and compile mac80211_hwsim with:

make

• Finally, you can load your mac80211hwsim module in Mininet-WiFi by choosing your module just before configureWifiNodes():

net.setModule('./mac80211_hwsim.ko')

info("*** Configuring wifi nodes\n")
net.configureWifiNodes()