nvmf_receive_controller_data
int nvmf_receive_controller_data(const struct nvmf_capsule *nc,
error = nvmf_receive_controller_data(cc, 0, data, sizeof(*data));
error = nvmf_receive_controller_data(nc, ctnio->kern_rel_offset, &mem,
int nvmf_receive_controller_data(struct nvmf_capsule *nc,
error = nvmf_receive_controller_data(nc, 0, dst, len);