His policy? He's in favor of all of it.
@SpankyDanky is something of an online repository for photos of Broadus interacting with marijuana (and also for pictures of the family's Scottie dog, Cindy). Most of them don't feature appearances by Snoop Dogg himself, though, meaning a person skilled at the suspension of disbelief, might be able to convince him or herself that Snoop did not explicitly condone his son's drug use.
To these critics, Snoop Dogg says shiiiiiiiiiiit:
"My kids can do whatever the hell they want. For me to say otherwise would be hypocritical. A lot of motherf—ers don't have a relationship with their kids, and that's when they get on drugs and have suicidal thoughts and drive drunk. Me and my son is mellow. I'm his father, so I wanna show him the proper way because he looks up to me."
And, just as a cobbler or mobster would not stand for his son to learn the family business at the hands of another, so Snoop is committed to teaching his son the proper way to get real, real high:
"What better way to [learn] than from the master?"
Snoop Dogg's second son, Cordell—a high school sophomore—received an offer to play football at UCLA earlier this year. In general, he seems less inclined toward chillaxin'.
(Hollywood Reporter // Images via @SpankyDanky/Twitter)