>uint8_t timeout; /* Local ack timeout for primary path (valid only for RC >QPs)*/ > >I believe that this is the period of time (in seconds) that the IB HCA >will wait for the ACK for a packet it sent out before re-transmitting? I >was looking as to whether this field can be modified when creating a QP >using RDMA_CM.
This field is set based on the packet lifetime carried in the path record. If you're using opensm, there's probably a configuration option that can adjust this (subnet timeout, maybe?). The time given for the QP attribute is in 'IB time': 4.096 x 2 ^ timeout micro-seconds. - Sean -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
