55 	int head, tail;  in iforce_send_packet()  local
63 	head = iforce->xmit.head;  in iforce_send_packet()
67 	if (CIRC_SPACE(head, tail, XMIT_SIZE) < n+2) {  in iforce_send_packet()
74 	empty = head == tail;  in iforce_send_packet()
75 	XMIT_INC(iforce->xmit.head, n+2);  in iforce_send_packet()
80 	iforce->xmit.buf[head] = HI(cmd);  in iforce_send_packet()
81 	XMIT_INC(head, 1);  in iforce_send_packet()
82 	iforce->xmit.buf[head] = LO(cmd);  in iforce_send_packet()
83 	XMIT_INC(head, 1);  in iforce_send_packet()
85 	c = CIRC_SPACE_TO_END(head, tail, XMIT_SIZE);  in iforce_send_packet()
88 	memcpy(&iforce->xmit.buf[head],  in iforce_send_packet()
96 	XMIT_INC(head, n);  in iforce_send_packet()