What does 2 Samuel 17:27 mean?

When David arrived at Mahanaim, Shobi son of Nahash from Rabbah of the Ammonites, Machir son of Ammiel from Lo Debar, and Barzillai the Gileadite from Rogelim brought supplies. 2 Samuel 17:27 - Modern Text Bible

(David receives support from local leaders, showing he still has allies.)