DevelopingApplications that Run over SunFDDI/P 121
10
DLPI primitives are defined in terms of STREAMS messages. All DLPI
messages are either type M_PROTO or type M_PCPROTO and contain the
appropriate DLPI message structure. DPLI primitives are exchanged by
confirmed negotiation—request primitives areissued by the user, which then
waits to receive an acknowledge (or error) response primitive fromthe
provider.This type of negotiation is illustrated in Figure 10-2.
Figure10-2 DLPI Request/Response Negotiation
DLPI Connectionless Service Primitives
Applications developed to run over FDDI use the DLPI connectionless service
primitives, which support the following set of operations:
•Attaching a STREAM to a given addressable device
•Getting and setting the physical address of the attached device
•Binding a data link service access point (SAP) to the STREAM
•Transmittingand receiving data link frames
•Transmittingand receiving LLC XID/TEST messages
•Transmittingand receiving multicast addresses
•Enabling physical and data link promiscuous mode
Data link service user
Data link service provider
Request primitive Response primitive