Flow : DLC <------> NODE
| Field | Type | Description |
|---|---|---|
| nxtqptr | PPTRBFHDR | Pointer to next buffer header in a queue |
| hdreptr | PPTRBFELT | Pointer to first buffer element |
| numelts | CCHAR | Number of buffer elements |
| msgtype | CCHAR | Message type: DLCDATA (0x10) |
| srcl | CCHAR | Source locality |
| srcp | CCHAR | Source partner |
| srci | INTEGER | Source index |
| destl | CCHAR | Destination locality |
| destp | CCHAR | Destination partner |
| desti | INTEGER | Destination index |
| ddhdr.ddth01 | CCHAR[6] | Transmission header |
| Field | Type | Description |
|---|---|---|
| hdreptr–>elteptr | PPTRBFELT | 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+n–1] | SNA request header (RH) if present, and request unit (RU) |