@param context - sender context, to match reply w/ request
@param evt_q_address - address of the mq in ssvm segment
@param peer_evt_q_address - address of peer's mq in ssvm segment
+ @param wrk_index - index of worker to receive the registration
@param n_fds - number of fds exchanged
@param fd_flags - flag indicating the fds that will be exchanged over
api socket
u32 context;
u64 evt_q_address;
u64 peer_evt_q_address;
+ u32 wrk_index;
u8 n_fds;
u8 fd_flags;
};