The IB spec defines an end-to-end credit mechanism for RC connections. So if the transport layer is reliable (InfiniBand, RoCE with DCB enabled) setting the retry count high enough is only needed to avoid connection shutdown due to brief cable disconnect/reconnect events.
Right, this is why I think the driver can use whatever it sees fit (we have a keep-alive mechanism for fast-fail functionality). -- 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
