Flow : DLC ------> NODE
| Field | Type | Description |
|---|---|---|
| nxtqptr | PTRBFHDR | Pointer to next buffer header in a queue |
| hdreptr | PTRBFELT | Pointer to first buffer element |
| numelts | CHAR | Number of buffer elements: 1 |
| msgtype | CHAR | Message type: OPENMSG (0x01) |
| srcl | CHAR | Source locality |
| srcp | CHAR | Source partner |
| srci | INTEGER | Source index |
| destl | CHAR | Destination locality |
| destp | CHAR | Destination partner |
| desti | INTEGER | Destination index |
| ophdr.openqual | CHAR | Open qualifier: RSPOK (0x02) |
| ophdr.opentype | CHAR | Open type: STAT (0x11) |
| ophdr.opresid | INTEGER | Resource identifier |
| ophdr.icreditr | INTEGER | Initial Credit for flow DLC –> NODE |
| ophdr.icredits | INTEGER | Initial Credit for flow NODE –> DLC |
| Field | Type | Description |
|---|---|---|
| hdreptr–>elteptr | PTRBFELT | Pointer to next buffer element (NULL is only one element) |
| hdreptr–>startd | INTEGER | Index to start of data in this buffer element's data array: 1 |
| hdreptr–>endd | INTEGER | Index to last byte of data in this buffer element's data array |
| hdreptr–>dataru | CHAR[SNANBEDA] | Defined as follows, where s = startd–1 |
| dataru[s..s+9] | Source name—same as destination name from Open(STATION) Request | |
| dataru[s+10..s+19] | Destination name—name of local node; same as source name from Open(STATION) Request |