This section lists some addition environment variables that can be used to tweak the system in addition to the variables listed in other sections, such as the CPU section.

apiVersion: v1
	kind: Pod
	spec:
	  containers:
	  - name: netshield
		env:

# Optional switch to prevent the system from creating new cgroups and
# instead just set affinity on control plane processes. The system will
# still try to detect what CPU resources to use from the cgroup unless
# the *_CPU_LISTs are set.
#- name: NO_CREATE_CGROUP
#  value: '1' # Not set is default.

# Number of cores (not CPUs) to assign to control plane.
# Only used when CPU resources are auto-detected (that is, not used when
# the *_CPU_LISTs are specified).
#- name: NUM_CP_CORES
#  value: '1'

# Optional packet buffer size
#- name: PACKET_BUFFER_SIZE
#  value: '2500'

# Optional number of I/O threads
#- name: IO_THREADS
#  value: '2'

# Optional list of interface types that should use af_xdp instead of the
# default af_packet (when a native driver can't be used).
#- name: AF_XDP_TYPES
#  value: '' # Could be set to something like 'veth i40e'. Using an empty
# list for AF_XDP_TYPES corresponds to the default behavior of always
# using af_packet.

# Optional list of interface types that should use af_packet instead of the
# default af_xdp (when a native driver can't be used).
#- name: AF_PACKET_TYPES
#  value: ixgbevf ixgbe

# Don't set both of AF_XDP_TYPES and AF_PACKET_TYPES, use just the one that
# implies the desired default or none of them (resulting in af_packet)
# (AF_XDP_TYPES takes precedence and hence af_packet is the
# default default).

# Optional list of PCI device drivers that should use DPDK's built-in type
# specific driver instead of af_packet of af_xdp.
# It is not recommended to remove any drivers from the default value
# (especially the first three that don't have a corresponding
# netdev/link in Linux). The main purpose would be to be able to add
# rebranded Mellanox drivers (if they are rebranded on that level),
# but can also be used to force using af_packet or af_xdp on mellanox
# devices.
#- name: NATIVE_DRIVERS
#  value: vfio-pci igb_uio uio_pci_generic mlx4_core mlx5_core

# Optional AF-XDP busy budget (uses 0/disabled per default).
#- name: AF_XDP_BUSY_BUDGET
#  value: '0'