Shared memory support for NVIDIA Jetson Orin: engineering build

[jkuro-tii]

Description of changes

Checklist for things done

• [ X] Summary of the proposed changes in the PR description
• More detailed description in the commit message(s)
• Commits are squashed into relevant entities - avoid a lot of minimal dev time commits in the PR
• Contribution guidelines followed
• Ghaf documentation updated with the commit - https://tiiuae.github.io/ghaf/
• PR linked to architecture documentation and requirement(s) (ticket id)
• Test procedure described (or includes tests). Select one or more:
  • Tested on Lenovo X1 x86_64
  • Tested on Jetson Orin NX or AGX aarch64
  • Tested on Polarfire riscv64
• Author has run nix flake check --accept-flake-config and it passes
• All automatic Github Action checks pass - see actions
• Author has added reviewers and removed PR draft status

Testing

Overall scenario:

• login to two test virtual machines
• run the memsocket demon and the memtest program of both sides
• verify results

STEPS:

On the NVIDIA console open two windows.

In the first window run the following commands:

# Login from host to netvm, as test VMs are unavailable from host
ssh 192.168.101.1
# login to the first vm:
ssh test1-vm.ghaf
#start shared memory - socket demon and the test application listener
memsocket -c ./test.sock &
memtest ./test.sock

------------------------ terminal output ------------------------

`
[ghaf@ghaf-host:~]$ ssh 192.168.101.1
(ghaf@192.168.101.1) Password:
Last login: Fri Jul 28 09:38:54 2023 from 192.168.101.2
[ghaf@net-vm:~]$ ssh test1-vm.ghaf
(ghaf@test1-vm.ghaf) Password:
Last login: Fri Jul 28 09:31:38 2023 from 192.168.100.1

[ghaf@test1-vm:~]$ memsocket -c ./test.sock &
[1] 698

[ghaf@test1-vm:~]$ memtest ./test.sock
Waiting for a connection.
`
------------------------------------------------------------------------

In the second window run the following commands:

# Login from host to netvm, as test VMs are unavailable from host
ssh 192.168.101.1
# login to the second vm:
ssh test2-vm.ghaf
#start shared memory - socket demon and the test application sender
memsocket -s ./test.sock 3 &
memtest ./test.sock /dev/random 100M
#verify results on both windows
`
[ghaf@ghaf-host:~]$ ssh 192.168.101.1
(ghaf@192.168.101.1) Password:
Last login: Fri Jul 28 09:38:54 2023 from 192.168.101.2
[ghaf@net-vm:~]$ ssh test2-vm.ghaf
(ghaf@test2-vm.ghaf) Password:
Last login: Fri Jul 28 09:41:05 2023 from 192.168.100.1
[ghaf@test2-vm:~]$ memsocket -s ./test.sock 3 &
[1] 721

[ghaf@test2-vm:~]$ memtest ./test.sock /dev/random 100M
Sent/received 104857601 bytes 8 Mbytes/sec
real 12.230s
user 0.380s
sys 0.450s

[ghaf@test2-vm:~]$

`