Charles Oakley says he's still persona non grata at Madison Square Garden ... telling TMZ Sports he feels "blackballed" by James Dolan ... and he wants the commissioner to get involved.
The Knicks legend was infamously dragged out of MSG and arrested for getting physical with security after an altercation with Dolan at a game in Feb. 2017.
Oak still has hard feelings about how it all went down ... and tells us he wishes the league would've had his back in his fight against Dolan.