KSZ9563RNXC datasheet(42/226 Pages) MICROCHIP

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KSZ9563R

DS00002419D-page 42

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4.4.17.1

Processing Entry Description

The Processing Entry consists of two parameters as described in Table 4-15.

The examples in Figure 4-7 are interpreted as follows:

• Rule #0: Test the matching rule entry #0. If true, apply action rule entry #0.

• Rule #1: Test the matching rule entry #1. If true, apply action rule entry #0.

• Rule #2: Test the matching rule entry #2. If true, apply action rule entry #1.

• Matching rule entry #3 is configured for the counter function. Action entry #3 is used to hold the corresponding

count value.

• Rule #4: Test the matching rule entries #4, 5 and 6. If all are true, apply action rule entry #4.

• Rule #6: Test the matching rule entry #6. If true, apply action rule entry #5.

• Rule #8: Test the matching rule entries #7 and 11. If both are true, apply action rule entry #9.

No more than one action can be taken for any packet. If the matching conditions are true for multiple RuleSets, then the

corresponding FRN field with the lowest value (highest priority) determines the action to be taken.

TABLE 4-15:

ACL PROCESSING ENTRY PARAMETERS

Parameter

Description

FRN[3:0]

First Rule Number

Pointer to an Action rule entry. Possible values are 0 to 15. If all Matching rules speci-

fied in the RuleSet are evaluated true, then this is the resulting Action rule.

RuleSet[15:0]

Specifies a set of one or more Matching rule entries.

RuleSet has one bit for each of the 16 Matching rule entries. If multiple Matching rules

are selected, then all conditions will be AND'ed to produce a final match result.

0 = Matching rule not selected

1 = Matching rule selected

FIGURE 4-7:

ACL STRUCTURE AND EXAMPLE RULE VALUES

FRN

#15

#14

#13

#12

#11

#10

none

4, 5, 6

none

7, 11

none

RuleSet

Processing Field

Entry Number

Entry #0

Entry #1

Entry #2

Entry #3

Entry #4

Entry #5

Entry #6

Entry #7

Entry #8

Entry #9

Entry #10

Entry #11

Entry #12

Entry #13

Entry #14

Entry #15

Entry #0

Entry #1

Entry #2

Entry #3

Entry #4

Entry #5

Entry #6

Entry #7

Entry #8

Entry #9

Entry #10

Entry #11

Entry #12

Entry #13

Entry #14

Entry #15

Action Rule

Matching Rule

Action Field

AND

When counter

function is enabled

in Matching Rule.

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