This indicates which columns are used in determining
the matching criteria for this access control.
'dpc' : cSpAclDpc and cSpAclDpcMask are the relevant
columns. The packet is compared to cSpAclDpc
in conjunction with cSpAclDpcMask to determine
if the packet matches this access control.
'opc' : cSpAclOpc and cSpAclOpcMask are the relevant
columns. The packet is compared to cSpAclOpc
in conjunction with cSpAclOpcMask to determine
if the packet matches this access control.
'pattern' : cSpAclPattern and cSpAclOffset are the
relevant columns. The matching criteria is
based on matching the pattern specified by
cSpAclPattern at offset cSpAclOffset from
the start of the packet.
'sio' : cSpAclSi is the relevant column. The SIO
field of the packet is compared to cSpAclSi
and a match is based on equality.