#include <in_pkt.h>
| class TInet6PacketBase |
| Public Attributes | |
|---|---|
| TInt | iLength |
| Protected Attributes | |
|---|---|
| TAlign | iAlign |
| Public Member Enumerations | |
|---|---|
| enum | TAlign { EAlign1, EAlign2, EAlign4, EAlign8 } |
| Public Member Functions | |
|---|---|
| TInet6PacketBase(TAlign) | |
| IMPORT_C TUint8 * | Access(RMBufChain &, TInt, TInt, TInt) |
| void | SetAlign(TAlign) |
Thin base class for the TInet6Packet.
| TInt | iLength |
Length of the mapped region.
The real mapped length as computed by the Access function. If access returned non-NULL, the following is always TRUE:
aMin <= iLength
| TInet6PacketBase | ( | TAlign | aAlign | ) | [inline] |
Constructor.
| Parameter | Description |
|---|---|
| aAlign | The align requirement. |
| IMPORT_C TUint8 * | Access | ( | RMBufChain & | aPacket, |
| TInt | aOffset, | |||
| TInt | aSize, | |||
| TInt | aMin | |||
| ) | ||||
Accesses a contiguous block of memory within RMBufChain starting at specified offset.
Attempts to map aSize amount of contiguous RMBuf space at the specified offset, by rearranging the RMBufs, if necessary.
If aSize amount is not available, the returned pointer maps the maximum available space (< aSize).
The length can be either less or larger than aSize. The caller must verify the returned length to detect whether Access succeeded.
| Parameter | Description |
|---|---|
| aOffset | The offset to the beginning of the area. The value MUST be in range: 0 <= aOffset <= Length(). |
| aSize | The size of the requested contiguous mapping (in octets). The value cannot be larger than KMBufSmallSize. If aSize <= 1, the method will return availabe contiguous mapping at the indicated offset without rearranging the RMBuf chain. Values larger than 1 may require rearrangement to get the requested area into single RMBuf. |
| aMin | The minimum accepted iLength. If iLength is less that aMin, then returns NULL. |
Returns: A pointer to the data starting at indicated offset. The iLength is set to the maximum available contiguous data starting from the requested offset. iLength is always <= KMBufSmallSize.
| void | SetAlign | ( | TAlign | aAlign | ) | [inline] |
Changes the align requirement.
| Parameter | Description |
|---|---|
| aAlign | The new align requirement. |