The likelihood that the Mavericks will be without point guard Devin Harris beyond Christmas increased Tuesday. Harris reported pain and swelling in his left big toe after going through a practice. Harris had surgery on the toe in July and returned to practice Dec. 2. “We’re trying to gauge that, where it’s coming from,” Harris said of the discomfort in the toe. “Once we figure that out, we can get a better feel for where we are.” Harris said he is “getting there” as far as a return to playing but admitted thinking he was “a lot closer” about two weeks ago. He has not appeared in a game this season, and the Mavericks have not set a timetable for his return. “I want to be out there for a complete stretch, not in and out,” Harris said. “The important thing is that as hard as it is to get back to 100 percent, I want to be back out there the majority of the time. “Hopefully, early Christmas present but not a New Year’s resolution. I’m sticking with that.” With Harris unavailable, the Mavericks have used rookie Shane Larkin and Gal Mekel as reserve point guards. Both have been inconsistent, as would be expected of rookies. In a 112-97 loss at Sacramento on Monday night, Larkin and Mekel were a combined 4-for-13 from the field with four assists and three turnovers.