fm10k_mbx_index_len
ack = fm10k_mbx_index_len(mbx, head, mbx->tail);
if (fm10k_mbx_index_len(mbx, head, mbx->tail) > mbx->tail_len)
if (fm10k_mbx_index_len(mbx, mbx->head, tail) < mbx->mbmem_len)
u16 mbmem_len, len, ack = fm10k_mbx_index_len(mbx, head, mbx->tail);
u16 len, seq = fm10k_mbx_index_len(mbx, mbx->head, tail);
u16 len = mbx->tail_len - fm10k_mbx_index_len(mbx, head, mbx->tail);
if (fm10k_mbx_index_len(mbx, head, mbx->tail) > mbx->tail_len)
if (fm10k_mbx_index_len(mbx, mbx->head, tail) < mbx->mbmem_len)