rdma_cap_eth_ah
int is_eth = rdma_cap_eth_ah(&dev->ib_dev, init_attr->port_num);
int is_eth = rdma_cap_eth_ah(&dev->ib_dev, port_num) &&
if (rdma_cap_eth_ah(id_priv->id.device, id_priv->id.port_num))
use_roce = rdma_cap_eth_ah(device, port_num);
if (!rdma_cap_eth_ah(device, ah_attr->port_num))
if (rdma_cap_eth_ah(device, port_num)) {
if (!rdma_cap_eth_ah(device, port_num)) {