HP 800 HP DLPI Programmer's Guide - Page 110

DLPI Primitives Connectionless-mode Service Primitives dl_dest_addr_offset offset from the beginning of the M_PROTO message block where the destination DLSAP address begins. dl_unix_errno UNIX system error code associated with the failure. This value should be non-zero only when dl_errno is set to DL_SYSERR. It is used to report UNIX system failures that prevent the processing of a given request. The UNIX error returned may be set to (not limited to) the errors listed in Table 2-2 on page 71. dl_errno DLPI error code associated with the failure. See Reasons for Failure in the description of DL_UNITDATA_REQ for the error codes that apply to an erroneous DL_UNITDATA_REQ. In addition, the error value DL_UNDELIVERABLE may be returned if the request was valid but for some reason the DLS provider could not deliver the data unit (for example, due to lack of sufficient local buffering to store the data unit). There is, however, no guarantee that such an error report will be generated for all undeliverable data units, since connectionless data transfer is not a confirmed service. State The message is valid in state DL_IDLE. New State The resulting state is unchanged. 110 Chapter 2