In short, everything metal on the line side of the service disconnecting means must be bonded together, to the gounded service conductor, the grounding electrode system, and the feeder equipment grounding conductors.
Keep in mind that 250.6 must be complied with which may require an alteration of the bonding and gronding methods used.
The code is inconsistent with how it handles the flow of electrons on the line side of the service verses the load side of the service. It's on of the many aspects of Article 250 I have never been a big fan of.
