82598EB Datasheet, PDF (427/596 Pages) Intel Corporation – Intel® 82598EB 10 Gigabit Ethernet Controller Datasheet

Intel^® 82598EB 10 GbE Controller - Pass-Through Multi-Port Modes
The structure of each of the decision filters is shown in Figure 3 4. A boxed number indicates that the
input is conditioned on a mask bit defined in the MDEF register for this rule. The decision filter rules are
as follows:
• At least one bit must be set in a MDEF register. If all bits are cleared (such as MDEF=0x0000),
then the decision filter is disabled and ignored.
• All enabled AND filters must match for the decision filter to match. An AND filter not enabled in
the MDEF register is ignored.
• If no OR filter is enabled in the MDEF register, the OR filters are ignored in the decision (such as
the filter might still match).
• If at least one OR filter is enabled in the MDEF register, then at least one of the enabled OR filters
must match for the decision filter to match.
Figure 5-5. Manageability Decision Filters
A decision filter (for any of the seven filters) defines which of the inputs is enabled as part of the rule.
The BMC programs a 32-bit rule with the settings as listed in Table 5-1. A set bit enables its
corresponding filter to participate in the filtering decision.
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