static inline u8 *get_rxmem(union recv_frame *precvframe)
{
/* always return rx_head... */
- if (precvframe == NULL)
+ if (!precvframe)
return NULL;
return precvframe->u.hdr.rx_head;
}
static inline u8 *get_recvframe_data(union recv_frame *precvframe)
{
/* always return rx_data */
- if (precvframe == NULL)
+ if (!precvframe)
return NULL;
return precvframe->u.hdr.rx_data;
}
/* used for extract sz bytes from rx_data, update rx_data and return
* the updated rx_data to the caller
*/
- if (precvframe == NULL)
+ if (!precvframe)
return NULL;
precvframe->u.hdr.rx_data += sz;
if (precvframe->u.hdr.rx_data > precvframe->u.hdr.rx_tail) {
* return the updated rx_tail to the caller
* after putting, rx_tail must be still larger than rx_end.
*/
- if (precvframe == NULL)
+ if (!precvframe)
return NULL;
precvframe->u.hdr.rx_tail += sz;
if (precvframe->u.hdr.rx_tail > precvframe->u.hdr.rx_end) {
* updated rx_end to the caller
* after pulling, rx_end must be still larger than rx_data.
*/
- if (precvframe == NULL)
+ if (!precvframe)
return NULL;
precvframe->u.hdr.rx_tail -= sz;
if (precvframe->u.hdr.rx_tail < precvframe->u.hdr.rx_data) {