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KSZ9567RTXI-TR 数据表(PDF) 49 Page - Microchip Technology |
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KSZ9567RTXI-TR 数据表(HTML) 49 Page - Microchip Technology |
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49 / 232 page  2017-2019 Microchip Technology Inc. DS00002329D-page 49 KSZ9567R Figure 4-8 shows basic organization of the ACL Table. The table has 16 entries, and each entry includes a matching field, action field and process field. Although these fields are stored together in one table, it is important to note that for a given table entry, the Matching, Action and Process fields generally do not form an associated group. The one excep- tion is when the Matching Rule is in Count Mode (MD = 01 and ENB = 00). In that case, the Matching and Action fields are used in tandem. 4.4.18.4 ACL Interrupts The ACL filtering functions do not generate interrupts. Interrupts apply only for the Count Mode (MD = 01, ENB = 00). The Matching Rule can be configured either to timeout if the interval between packets of a specific type (MAC address and EtherType), or when a set number of these packets are received. There is a separate interrupt for each port. Port specific interrupt status and masks are located in the Port Interrupt Status Register and Port Interrupt Mask Register. The top level interrupt registers for each port are in the Global Port Interrupt Status Register and Global Port Interrupt Mask Register. 4.4.18.5 ACL Registers Table 4-22 provides a list of ACL related registers. FIGURE 4-8: ACL TABLE FORMAT TABLE 4-22: ACL REGISTERS Registers Description Port Interrupt Status Register, Port Interrupt Mask Register ACL interrupt Port ACL Access 0 Register through Port ACL Access F Register, Port ACL Byte Enable MSB Register, Port ACL Byte Enable LSB Register, Port ACL Access Control 0 Register ACL Table access Port Priority Control Register Priority classification Port Authentication Control Register ACL enable F R N MD [1:0] ENB [1:0] S / D E Q MAC ADDRESS [47:0] TYPE [15:0] F R N MD [1:0] ENB [1:0] S / D E Q IP ADDRESS [31:0] IP MASK [31:0] F R N MD [1:0] ENB [1:0] S / D E Q MAX PORT [15:0] MIN PORT [15:0] Resvd (5) PC [1:0] PRO [7:0] F M E FMSK [7:0] FLAG [7:0] PM [1:0] PM [1:0] PM [1:0] P [2:0] P [2:0] P [2:0] R P E R P E R P E RP [2:0] RP [2:0] RP [2:0] MM [1:0] MM [1:0] MM [1:0] FORWARD [# ports] FORWARD [# ports] FORWARD [# ports] RULESET [15:0] RULESET [15:0] RULESET [15:0] MATCHING Rule ACTION Rule PROCESS Field PROCESS Field MD = 01 ENB = 00 MD = 10 MD = 11 F R N MD [1:0] ENB [1:0] S / D E Q MAC ADDRESS [47:0] TYPE [15:0] COUNT[10:0] TU RULESET [15:0] MD = 01 ENB != 00 CA unu sed |
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