Intel Video Game Controller Intel Gigabit Ethernet Controllers ユーザーズマニュアル

146

The Ethernet controller supports receiving ARP Request packets for wakeup if the ARP bit is set in 

the Wakeup Filter Control Register (WUFC). Four IPv4 addresses are supported which are 
programmed in the IPv4 Address Table (IPv4AT)

2

. A successfully matched packet must contain a 

broadcast MAC address, a Protocol Type of 0806h, an ARP OPCODE of 01h, and one of the four 

programmed IPv4 addresses. The Ethernet controller also handles ARP Request packets that have 
VLAN tagging on both Ethernet II and Ethernet SNAP types.

1.

ARP Request Packet for the 82544GC/EI.

2.

Four IP addresses are supported which are programmed in the IP Address Table (IPAT) for the 82544GC/EI.

6

Destination Address

Compare

MAC Header – 
processed by main 
address filter

6

Source Address

Skip

8
D = (0/8)

a

Possible LLC/SNAP Header

Type<= 1500 and 
AAAA_0300_0000h

a

Skip
Check

a

4
S = (0/4)

a

Possible VLAN Tag

8100h and check ID

a

Skip
Check

a

2

Type

0806h

Compare

ARP

2

HW Type

0001h

Compare

2

Protocol Type

0800h

Compare

1

Hardware Size

06h

Compare

1

Protocol Address Length

04h

Compare

2

Operation

0001h

Compare

6

Sender HW Address

-

Ignore

4

Sender IP Address

-

Ignore

6

Target HW Address

-

Ignore

4

Target IP Address

IPv4AT

b

Compare

May match any of 4 
values in IPv4AT

b

a.

82541PI/GI/EI and 82547GI/EI only.

b.

IPAT for the 82544GC/EI.