82583V Datasheet, PDF (184/374 Pages) Intel Corporation – Intel® 82583V GbE Controller

82583V GbE Controller—Power Management and Delivery
8.5.3.1.5
Accepting broadcast Magic Packets* for wake up purposes when the Broadcast Accept
bit of the Receive Control Register (RCTL.BAM) is 0b is a change from previous devices,
which initialized RCTL.BAM to 1b if APM was enabled in the NVM, but then required that
bit to be 1b to accept broadcast Magic Packets*, unless broadcast packets passed
another perfect or multicast filter.
ARP/IPv4 Request Packet
The 82583V supports receiving ARP Request packets for wake up if the ARP bit is set in
the WUFC. Four IPv4 addresses are supported, which are programmed in the IPv4
Address Table (IP4AT). A successfully matched packet must contain a broadcast MAC
address, a protocol type of 0x0806, an ARP opcode of 0x01, and one of the four
programmed IPv4 addresses. The 82583V also handles ARP request packets that have
VLAN tagging on both Ethernet II and Ethernet SNAP types.
8.5.3.1.6
Offset
# of
Bytes
Field
0
6
Destination Address
6
6
Source Address
Value
Action
Compare
Skip
Comment
MAC Header –
processed by main
address filter
12
8
Possible LLC/SNAP Header
Skip
12
4
Possible VLAN Tag
Skip
12
2
Type
0x0806
Compare
ARP
14
2
Hardware Type
0x0001
Compare
16
2
Protocol Type
0x0800
Compare
18
1
Hardware Size
0x06
Compare
19
1
Protocol Address Length
0x04
Compare
20
2
Operation
0x0001
Compare
22
6
Sender Hardware Address
-
Ignore
28
4
Sender IP Address
-
Ignore
32
6
38
4
Target Hardware Address
Target IP Address
-
IP4AT
Ignore
Compare
May match any of four
values in IP4AT
Directed IPv4 Packet
The 82583V supports receiving directed IPv4 packets for wake up if the IPV4 bit is set
in the WUFC. Four IPv4 addresses are supported, which are programmed in the IPv4
Address Table (IP4AT). A successfully matched packet must contain the station's MAC
address, a protocol type of 0x0800, and one of the four programmed IPv4 addresses.
The 82583V also handles directed IPv4 packets that have VLAN tagging on both
Ethernet II and Ethernet SNAP types.
184