InfiniBand Network Architecture

DM MAD Format

DM MADs have the format shown in Table 37-1 on this page.

Table 37-1. DM MAD Format

Dword		Byte 0	Byte 1	Byte 2	Byte 3
0	Base MAD Header	Base Version = 01h	Management Class = DevMgt	Class Version = 01h	R	DM Method (see “DM Methods” on page 1120)
1		Status is only meaningful in response packets. See Table 27-2 on page 776. In addition, the following DM-specific status bits are defined: Bit 8 = NoResponse 1 = IOC Not responding Bit 9 = NoServiceEntries 1 = Service Entries are not supported Bit 15 = GeneralFailure 1 = IOC General Failure		Not used
2		Transaction ID
3
4		DM AttributeID (see “DM Attributes” on page 1120)		Reserved
5		AttributeModifier (see “DM Attributes” on page 1120).
6–15	DM-specific fields	40 bytes (reserved)
16–63		192-byte DM MAD payload.Structure ...