___    __              _____                       __       ______           __          
   /   |  / /________     / ___/____  _________ ______/ /_     /_  __/__  ____ _/ /__  ____ _
  / /| | / / ___/ __ \    \__ \/ __ \/ ___/ __ `/ ___/ __ \     / / / _ \/ __ `/ / _ \/ __ `/
 / ___ |/ (__  ) /_/ /   ___/ / /_/ / /  / /_/ / /__/ / / /    / / /  __/ /_/ / /  __/ /_/ / 
/_/  |_/_/____/\____/   /____/ .___/_/   \__,_/\___/_/ /_/    /_/  \___/\__,_/_/\___/\__, /  
                            /_/                                                     /____/   

How to setup wifi in 9front

This is all documented very well elsewhere:

Plan9 desktop guide (HTTPS)

.. but these are my notes for my own benefit (and yours if you happen to look).

Assumptions

This assumes you have a machine with an existing 9front installation, some other network connection (presumably ethernet) already available, and a supported wifi card.

In my case, this means my elderly ThinkPad Edge E130 (i3-3227U version, circa 2014).

Identify your wifi card's firmware

The following command should show you some output related to your wifi card:

grep .*l1 /dev/kmesg

.. if you have multiple ethernet cards configured the l1 might be l2, etc..

In my case I'll see that the file /lib/firmware/iwn-2030 is missing.

Download the correct firmware

Plan9 uses the firmware distributed by OpenBSD. Go to the following site and identify the correct firmware bundle:

OpenBSD 7.7 Firmware

In my case, the iwn-2030 firmware will be inside the file iwn-firmware-5.11p1.tgz

To download that firmware I follow these steps:

cd /lib
hget https://firmware.openbsd.org/firmware/7.7/iwn-firmware-5.11p1.tgz | tar xz

Add a wifi connection function to your profile

Edit your profile by typing:

acme $home/lib/profile

Locate the line that starts with:

switch($service)

... and then, prior to that line, insert a function like this:

fn wifi {
   bind -a '#l1' /net
   aux/wpa -s $1 -p /net/ether1
   ip/ipconfig ether /net/ether1
}

• NOTE* it's really important to declare this prior to the switch statement, or it won't be available to you until after you exit your session.

Then save you file by middle-clicking "Put" in the toolbar above the buffer.

Reboot

Now reboot your machine:

reboot

Once your machine has booted you should now be able to connect to your wifi by typing (replace <essid> with your wifi network name):

wifi <essid>

and providing the password when prompted.

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