Data Sheet

System Manageability—Ethernet Controller I210
639
A decision filter (for any of the 8 filters) defines which of the above inputs is enabled as part of a
filtering rule. The MC programs two 32-bit registers per rule (MDEF[7:0] & MDEF_EXT[7:0]) with the
settings as described in Section 8.22.7 and Section 8.22.8. A set bit enables its corresponding filter to
participate in the filtering decision.
10.3.4.2 Exclusive Traffic
The decisions regarding forwarding of packets to the Host for LAN traffic or to the LAN for Host traffic
are independent from the management decision filters. However, the MC may define some types of
traffic as exclusive. The behavior for such traffic is defined by the using the bits corresponding to the
decision filter in the MNGONLY register (one bit per each of the eight decision rules) and the
MDEF_EXT.apply_to_host_traffic and MDEF_EXT.apply_to_network_traffic bits. Table 10-4 describes
the behavior in each case. If one or more filters match the traffic and at least one of the filters is set as
exclusive, the traffic is treated as exclusive.
Any traffic matching any of the configurable filters (see Section 10.3.4.1) can be used as filters to pass
traffic to the Host.
When using the SMBus interface, the MC enables these filters by issuing the Update Management
Receive Filter Parameters command (see Section 10.5.9.1.6) with the parameter of 0x0F.
Table 10-4. Exclusive Traffic Behavior
Filter Match Filter Doesn’t Match
Traffic Source MNGONLY = 0b MNGONLY = 1b N/A
From network
Traffic is forwarded to the
manageability.
Traffic is forwarded to the Host
according to Host filtering
Traffic is forwarded only to
manageability.
Traffic is forwarded to
the Host according to
Host filtering
From Host
Traffic is forwarded to the
manageability and to the LAN
Traffic is forwarded only to
manageability.
Traffic is forwarded to
the LAN
Table 10-5. MNGONLY Register Description and Usage
Bits Description Default
0 Decision Filter 0 Determines if packets that have passed decision filter 0 are sent exclusively to the manageability path.
1 Decision Filter 1 Determines if packets that have passed decision filter 1are sent exclusively to the manageability path.
2 Decision Filter 2 Determines if packets that have passed decision filter 2 are sent exclusively to the manageability path
3 Decision Filter 3 Determines if packets that have passed decision filter 3 are sent exclusively to the manageability path
4 Decision Filter 4 Determines if packets that have passed decision filter 4 are sent exclusively to the manageability path
5Unicast and Mixed
NC-SI mode: Determines if unicast and mixed packets are sent exclusively to the manageability path
SMBus mode: Determines if packets that have passed decision filter 5 are sent exclusively to the
manageability path
6 Global Multicast
NC-SI mode: Determines if multicast packets are sent exclusively to the manageability path
SMBus mode: Determines if packets that have passed decision filter 6 are sent exclusively to the
manageability path
7Broadcast
NC-SI mode: Determines if broadcast packets are sent exclusively to the manageability path
SMBus mode: Determines if ARP packets are sent exclusively to the manageability path
31:8 Reserved Reserved