Filtering options can be set only when T4 offload driver (t4_tom) is not loaded.
A list of pre-defined filter selection combinations is displayed. The combination fragmentation, mpshittype, protocol, vlan, port, fcoe is active by default. To select a different combination, highlight it in the Combinations list by clicking and click "Set Active Combination".
You can create filter rules for any combination in the list. However, filter rule created only for the Active Combination will apply. To create a new rule, select a combination and click "Add a filter rule". The FILTERID and T4 CARD fields are mandatory. After providing appropriate values for the parameters click "Save Changes".
Note: For a detailed explanation regarding different fields, please refer cxgbtool manual by running man cxgbtool command on Management Agent CLI.