5812-DS00-R datasheet(20/84 Pages) BOARDCOM

20 / 84 page

BCM5812

Advance Data Sheet

3/11/03

B roa dcom Co rpo rat ion

Page 12

Cryptographic Operations

Document

5812-DS01-405-R

Figure 9: IPsec Packet Description Showing Input Fragments

Figure 10: IPsec Packet Description Showing Output Fragments

COMMAND CONTEXT ADDRESS

NEXT INPUT FRAGMENT CHAIN ENTRY

RESERVED

INPUT FRAGMENT LENGTH

INPUT FRAGMENT ADDRESS

PACKET LENGTH

RESERVED

NEXT OUTPUT FRAGMENT CHAIN ENTRY

RESERVED

OUTPUT FRAGMENT LENGTH

OUTPUT FRAGMENT ADDRESS

NEXT INPUT FRAGMENT CHAIN ENTRY

RESERVED

INPUT FRAGMENT LENGTH

INPUT FRAGMENT ADDRESS

NEXT INPUT FRAGMENT CHAIN ENTRY

RESERVED

INPUT FRAGMENT LENGTH

INPUT FRAGMENT ADDRESS

Offset in 32-bit Words

(from context)

Fragment 1

Length

Fragment 2

Length

Fragment N

Length

Gathered Input Packet

(Network Byte Order)

Input Fragment Chain

Input Fragments Can Be

Arbitrary Byte Aligned

Packet Descriptor

COMMAND CONTEXT ADDRESS

NEXT INPUT FRAGMENT CHAIN ENTRY

RESERVED

INPUT FRAGMENT LENGTH

INPUT FRAGMENT ADDRESS

PACKET LENGTH

RESERVED

NEXT OUTPUT FRAGMENT CHAIN ENTRY

RESERVED

OUTPUT FRAGMENT LENGTH

OUTPUT FRAGMENT ADDRESS

NEXT INPUT FRAGMENT CHAIN ENTRY

RESERVED

INPUT FRAGMENT LENGTH

INPUT FRAGMENT ADDRESS

NEXT INPUT FRAGMENT CHAIN ENTRY

RESERVED

INPUT FRAGMENT LENGTH

INPUT FRAGMENT ADDRESS

Offset in 32-bit Words

(from context)

Fragment 1

Length

Fragment 2

Length

Fragment N

Length

Gathered Input Packet

(Network Byte Order)

Input Fragment Chain

Input Fragments Can Be

Arbitrary Byte Aligned

Packet Descriptor

COMMAND CONTEXT ADDRESS

NEXT INPUT FRAGMENT CHAIN ENTRY

RESERVED

INPUT FRAGMENT LENGTH

INPUT FRAGMENT ADDRESS

PACKET LENGTH

RESERVED

NEXT OUTPUT FRAGMENT CHAIN ENTRY

RESERVED

OUTPUT FRAGMENT LENGTH

OUTPUT FRAGMENT ADDRESS

NEXT OUTPUT FRAGMENT CHAIN ENTRY

RESERVED

OUTPUT FRAGMENT LENGTH

OUPUT FRAGMENT ADDRESS

NEXT OUTPUT FRAGMENT CHAIN ENTRY

RESERVED

OUTPUT FRAGMENT LENGTH

OUTPUT FRAGMENT ADDRESS

Fragment 1

Length

Fragment 2

Length

Fragment N

Length

Scattered Output Packet

(Network Byte Order)

HMAC

(16-20 Bytes)

Output Fragment Chain

Output Fragments Must Be

32-bit Word Aligned

Packet Descriptor

COMMAND CONTEXT ADDRESS

NEXT INPUT FRAGMENT CHAIN ENTRY

RESERVED

INPUT FRAGMENT LENGTH

INPUT FRAGMENT ADDRESS

PACKET LENGTH

RESERVED

NEXT OUTPUT FRAGMENT CHAIN ENTRY

RESERVED

OUTPUT FRAGMENT LENGTH

OUTPUT FRAGMENT ADDRESS

NEXT OUTPUT FRAGMENT CHAIN ENTRY

RESERVED

OUTPUT FRAGMENT LENGTH

OUPUT FRAGMENT ADDRESS

NEXT OUTPUT FRAGMENT CHAIN ENTRY

RESERVED

OUTPUT FRAGMENT LENGTH

OUTPUT FRAGMENT ADDRESS

Fragment 1

Length

Fragment 2

Length

Fragment N

Length

Scattered Output Packet

(Network Byte Order)

HMAC

(16-20 Bytes)

Output Fragment Chain

Output Fragments Must Be

32-bit Word Aligned

Packet Descriptor

5812-DS00-R Datenblatt(PDF) 20 Page - Broadcom Corporation.

5812-DS00-R Datenblatt(HTML) 20 Page - Broadcom Corporation.

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