Update vagrant to kernel version 5.15

Signed-off-by: sferna1 <santhosh.fernandes@gmail.com>

dev_environment/Vagrantfile

@@ -33,6 +33,16 @@ Vagrant.configure("2") do |config|
 
     l3af.vm.synced_folder cfg['host_l3afd_code_dir'], "/home/vagrant/code/l3afd"
 
+    l3af.vm.provision "shell", inline: <<-SHELL
+      wget https://raw.githubusercontent.com/pimlie/ubuntu-mainline-kernel.sh/master/ubuntu-mainline-kernel.sh
+      chmod +x ubuntu-mainline-kernel.sh
+      sudo mv ubuntu-mainline-kernel.sh /usr/local/bin/
+      sudo ubuntu-mainline-kernel.sh -i 5.15.0
+    SHELL
+
+    # restart after upgrade
+    l3af.vm.provision :reload
+
     # Add Grafana apt repo
     l3af.vm.provision "shell", inline: <<-SHELL
       sudo apt-get install -y apt-transport-https

dev_environment/setup_linux_dev_env.sh

@@ -19,6 +19,27 @@ if [ "$VER" != "20" ]; then
   fi
 fi
 
+# Check for kernel version 5.15
+CURRENT_KERNEL_VERSION=$(uname -r | cut -d"." -f1-2)
+CURRENT_KERNEL_MAJOR_VERSION=$(echo "${CURRENT_KERNEL_VERSION}" | cut -d"." -f1)
+CURRENT_KERNEL_MINOR_VERSION=$(echo "${CURRENT_KERNEL_VERSION}" | cut -d"." -f2)
+ALLOWED_KERNEL_VERSION="5.15"
+ALLOWED_KERNEL_MAJOR_VERSION=$(echo ${ALLOWED_KERNEL_VERSION} | cut -d"." -f1)
+ALLOWED_KERNEL_MINOR_VERSION=$(echo ${ALLOWED_KERNEL_VERSION} | cut -d"." -f2)
+if [ "${CURRENT_KERNEL_MAJOR_VERSION}" -lt "${ALLOWED_KERNEL_MAJOR_VERSION}" ]; then
+  # If the current major version is less than the allowed major version, show an error message and exit.
+  echo "Error: Kernel ${CURRENT_KERNEL_VERSION} not supported, please update to ${ALLOWED_KERNEL_VERSION}."
+  exit
+fi
+if [ "${CURRENT_KERNEL_MAJOR_VERSION}" == "${ALLOWED_KERNEL_MAJOR_VERSION}" ]; then
+  # If the current major version is equal to the allowed major version, check the minor version.
+  if [ "${CURRENT_KERNEL_MINOR_VERSION}" -lt "${ALLOWED_KERNEL_MINOR_VERSION}" ]; then
+    # If the current minor version is less than the allowed minor version, show an error message and exit.
+    echo "Error: Kernel ${CURRENT_KERNEL_VERSION} not supported, please update to ${ALLOWED_KERNEL_VERSION}."
+    exit
+  fi
+fi
+
 # Get cpu architecture, arm or amd
 ARCH=$(uname -p)