On Thu, 11 Jun 2015, Mike Marciniszyn wrote: > +static int query_device(struct ib_device *ibdev, > + struct ib_device_attr *props) > +{ > + struct hfi1_devdata *dd = dd_from_ibdev(ibdev); > + struct hfi1_ibdev *dev = to_idev(ibdev); > + > + memset(props, 0, sizeof(*props)); > + > + props->device_cap_flags = IB_DEVICE_BAD_PKEY_CNTR | > + IB_DEVICE_BAD_QKEY_CNTR | IB_DEVICE_SHUTDOWN_PORT | > + IB_DEVICE_SYS_IMAGE_GUID | IB_DEVICE_RC_RNR_NAK_GEN | > + IB_DEVICE_PORT_ACTIVE_EVENT | IB_DEVICE_SRQ_RESIZE; Hmmm... One thing that we need here is: IB_DEVICE_BLOCK_MULTICAST_LOOPBACK to avoid the flow back of large multicast streams. Looks like this is IB/OP only. If you support ethernet then other flags are required too. > + props->page_size_cap = PAGE_SIZE; No large page support? -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html