82598EB Datasheet, PDF (514/596 Pages) Intel Corporation – Intel® 82598EB 10 Gigabit Ethernet Controller Datasheet

Intel^® 82598EB 10 GbE Controller - NC-SI Support
5.4.2.2.7.4 Set Unicast Packet Reduction Response (Intel Command 0x04, Reduction Filter
Index 0x00)
5.4.2.2.7.5 Set Multicast Packet Reduction Command (Intel Command 0x04, Reduction
Filter Index 0x01)
This command causes the NC to filter packets that have passed due to the multicast filter (MAC address
filters, as specified in the DMTF NC-SI).
The filtering of these packets are done such that the MC might add a logical condition that a packet
must match, or it must be discarded.
Note: Packets that might have been blocked can still pass due to other decision filters.
In order to disable mulitcast packet reduction, the MC should set all reduction filters to 0b. Following
such a setting, the NC must forward, to the MC, all packets that have passed the multicast filters
(global multicast filtering) as specified in the DMTF NC-SI.
The Multicast Packet Reduction field has the following structure:
Bit #
Name
0
Reserved
1
Reserved
2
Reserved
3
IP Address
4
Reserved
5
Reserved
6
Reserved
7
Reserved
8
ARP Response
9
Reserved
Reserved.
Description
If set, all multicast packets must also match an IP filter.
If set, all multicast packets must also match the ARP response filter (any of the active
filters).
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