Man page 9 : __dev_remove_offload

__dev_remove_offload - remove offload handler

void __dev_remove_offload(struct packet_offload *  po );

po
    packet offload declaration

Remove a protocol offload handler that was previously added to the kernel offload handlers by dev_add_offload. The passed offload_type is removed from the kernel lists and can be freed or reused once this function returns.

The packet type might still be in use by receivers and must not be freed until after all the CPUAqs have gone through a quiescent state.