Filter
Top Products
Intel
®
82575EB Gigabit Ethernet Controller — Wake-Up Packets
Intel
®
82575EB Gigabit Ethernet Controller 324632-003
Software Developer’s Manual and EEPROM Guide Revision: 2.1
236 January 2011
7.5.3.1.7 Directed IPv6 Packet
The 82575 supports reception of Directed IPv6 packets for wake up if the IPv6 bit is set in the Wake Up
Filter Control Register (WUFC). One IPv6 address is supported and it is programmed in the IPv6
Address Table (IP6AT). A successfully matched packet must contain the station MAC address, a Protocol
Type of 86DDh, and the programmed IPv6 address. In addition, the IPAV.V60 bit should be set. The
82575 also handles Directed IPv6 packets with VLAN tagging on both Ethernet II and Ethernet SNAP
types.
7.5.3.2 Flexible Filter
The 82575 supports a total of four flexible filters. Each filter can be configured to recognize any
arbitrary pattern within the first 128 bytes of the packet. The flexible filter is configured by software
programming mask values into the Flexible Filter Mask Table (FFMT), required values into the Flexible
Offset
Number of
Bytes
Field Value Action Comment
0 6 Destination Address Compare MAC Header processed by main
address filter.
6 6 Source Address Skip
12 8 Possible LLC/SNAP Header Skip
12 4 Possible VLAN Tag Skip
12 2 Type 0800h Compare IP
14 1 Version/ HDR length 4Xh Compare Check IPv4.
15 1 Type of Service - Ignore
16 2 Packet Length - Ignore
18 2 Identification - Ignore
20 2 Fragment Information - Ignore
22 1 Time to Live - Ignore
23 1 Protocol - Ignore
24 2 Header Checksum - Ignore
26 4 Source IP Address - Ignore
30 4 Destination IP Address IP4AT Compare May match any of 4 values in IP4AT.
Offset
Number of
Bytes
Field Value Action Comment
0 6 Destination Address Compare MAC Header processed by main
address filter.
6 6 Source Address Skip
12 8 Possible LLC/SNAP Header Skip
12 4 Possible VLAN Tag Skip
12 2 Type 0800h Compare IP
14 1 Version / Priority 6Xh Compare Check IPv6.
15 3 Flow Label - Ignore
18 2 Payload Length - Ignore
20 1 Next Header - Ignore
21 1 Hop Limit - Ignore
22 16 Source IP Address - Ignore
38 16 Destination IP Address IP6AT Compare Match value in IP6AT.