VSC7440 datasheet(116/444 Pages) MICROSEMI

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Functional Descriptions

VMDS-10492 VSC7440 Datasheet Revision 4.2

CUSTOM_ACE_ENA

Controls S2 custom rule selection:

Bit 0: Selects custom key to use (0: CUSTOM_1, 1: CUSTOM_2).

Bit 1: Enables custom key for first lookup.

Bit 2: Enables custom key for second lookup.

CUSTOM_ACE_OFFSET

Selects custom data extraction point:

0: Current position (after IFH.WORD16_POP_CNT). Only

applicable to frame type ETH.

1: Link layer payload (after VLAN tags and EtherType for ETH,

after control word for CW).

2: Link layer payload + 20 bytes.

3: Link layer payload + 40 bytes.

PAG_OVERRIDE_MASK

Bits set in this mask override the previous PAG result with the

PAG_VAL value from this action.

x x

PAG_VAL

PAG is updated using the following bit mask operation:

PAG = (PAG and ~PAG_OVERRIDE_MASK) | (PAG_VAL and

PAG_OVERRIDE_MASK).

PAG can be used to tie VCAP CLM lookups with VCAP IS2

lookups. The PAG default value is configurable per port in

ANA_CL:PORT:PORT_ID_CFG.PAG_VAL.

x x

RESERVED

Must be set to 0.

LPORT_NUM

Use this value for LPORT and IFH.SRC_PORT when

LPORT_ENA is set.

MATCH_ID

Logical ID for the entry. If the frame is forwarded to the CPU, the

MATCH_ID is extracted together with the frame. MATCH_ID is

used together with MATCH_ID_MASK as follows:

MATCH_ID = (MATCH_ID and ~MATCH_ID_MASK) |

(MATCH_ID and MATCH_ID_MASK).

The result is placed in IFH.CL_RSLT.

MATCH_ID_MASK

Bits set in this mask overrides the previous MATCH_ID with the

MATCH_ID value from this action.

PIPELINE_FORCE_ENA

If set, use PIPELINE_PT unconditionally. Overrule previous

settings of pipeline point. Use the following pipeline actions:

0: No change to PIPELINE_PT or PIPELINE_ACT.

1: Change PIPELINE_PT and set PIPELINE_ACT=XTR

2: Change PIPELINE_PT and set PIPELINE_ACT=INJ

(PIPELINE_ACT_SEL=0) or INJ_MASQ

(PIPELINE_ACT_SEL=1)

3: Change PIPELINE_PT and set PIPELINE_ACT=LBK_QS

(PIPELINE_ACT_SEL=0) or LBK_ASM

(PIPELINE_ACT_SEL=1)

xxxx

Table 65 •

VCAP CLM Actions (continued)

Field Name

Description and Encoding

Size

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