ATM_CELL_PAYLOAD
length += ATM_CELL_PAYLOAD - 1 + ATM_AAL5_TRAILER;
return length - length % ATM_CELL_PAYLOAD;
if (sarb->tail + ATM_CELL_PAYLOAD > sarb->end) {
memcpy(skb_tail_pointer(sarb), source + ATM_CELL_HEADER, ATM_CELL_PAYLOAD);
__skb_put(sarb, ATM_CELL_PAYLOAD);
unsigned int data_len = min_t(unsigned int, skb->len, ATM_CELL_PAYLOAD);
unsigned int left = ATM_CELL_PAYLOAD - data_len;
#define ATM_CELL_HEADER (ATM_CELL_SIZE - ATM_CELL_PAYLOAD)