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VSC7440 датащи(PDF) 220 Page - Microsemi Corporation |
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VSC7440 датащи(HTML) 220 Page - Microsemi Corporation |
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220 / 444 page ![]() Functional Descriptions VMDS-10492 VSC7440 Datasheet Revision 4.2 203 3.23.3.4 ACL Policer Statistics The following table lists the applicable ACL policer statistics registers. The following illustration shows the configuration and status available for each ACL policer statistics counter. Figure 49 • ACL Policer Statistics Each counter type must be configured whether bytes or frames are counted (ANA_AC:STAT_GLOBAL_CFG_ACL: STAT_GLOBAL_CFG.CFG_CNT_BYTE). ACL events that can trigger counting can be selected among the following events. If an ACL policer is triggered by an IS2 action, with IS_INNER_ACL = 1, it is termed “inner”. Otherwise, it is termed “outer”. • Count CPU traffic applicable for outer ACL policer, but not discarded • Count front port traffic applicable for outer ACL policer, but not discarded • Count CPU traffic discarded by outer ACL policer • Count front port traffic discarded by outer ACL policer • Count CPU traffic applicable for inner ACL policer, but not discarded • Count front port traffic applicable for inner ACL policer, but not discarded • Count CPU traffic discarded by inner ACL policer • Count front port traffic discarded by inner ACL policer There is one common event mask for each of the two ACL policer counter types (ANA_AC:STAT_GLOBAL_CFG_ACL:STAT_GLOBAL_EVENT_MASK). Each 40-bit counter consists of an MSB part and an LSB part (ANA_AC:STAT_CNT_CFG_ACL.STAT_MSB_CNT and ANA_AC:STAT_CNT_CFG_ACL.STAT_LSB_CNT). The MSB part of the counter is latched to a shadow register when the LSB part is read. As a result, the LSB part must always be read first, and the MSB part must be read immediately after the LSB part. When writing to the counter, the MSB part must be written first, followed by the LSB part. Table 130 • ACL Policer Statistics Registers Overview Target::Register.Field Description Replication ANA_AC:STAT_GLOBAL_CFG_ACL: STAT_GLOBAL_CFG Configures counting of bytes or frames per ACL policer index. 2 ANA_AC:STAT_GLOBAL_CFG_ACL: STAT_GLOBAL_EVENT_MASK Configures global event mask per ACL policer index. 2 ANA_AC:STAT_CNT_CFG_ACL.STAT_LSB_ CNT Least significant 32 bits of counters per ACL policer index. per ACL policer index × 2 ANA_AC:STAT_CNT_CFG_ACL.STAT_MSB_ CNT Most significant 8 bits of counters per ACL policer index. per ACL policer index × 2 index = VCAP_S2.POLICE_IDX |
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