Lines Matching refs:DSA
604 3.2.1 DSA (Distributed Switch Architecture) switches
609 a port multiplier with optional forwarding acceleration features. Each DSA
614 When a DSA switch is attached to a host port, PTP synchronization has to
616 jitter between the host port and its PTP partner. For this reason, some DSA
619 measure wire and PHY propagation latencies. Timestamping DSA switches are
621 for the fact that the DSA interfaces are in fact virtual in terms of network
623 interfaces of a DSA switch to share the same PHC.
625 By design, PTP timestamping with a DSA switch does not need any special
627 host port also supports PTP timestamping, DSA will take care of intercepting
631 anybody else except for the DSA switch port must be prevented from doing so.
633 In the generic layer, DSA provides the following infrastructure for PTP
661 - ``.port_rxtstamp()``: On RX, the BPF classifier is run by DSA to
667 DSA header, or attached in other ways to the packet), or out-of-band
670 that case, it is the responsibility of the DSA driver to call
677 hence they do not have a representation in terms of a network interface as DSA
688 driver. Therefore, as opposed to DSA switches, modifications need to be done
701 will be called now, to determine, using logic very similar to DSA, whether
702 deferral for RX timestamping is necessary. Again like DSA, it becomes the
733 Stacked PHCs, especially DSA (but not only) - since that doesn't require any
741 Any TX timestamping logic, be it a plain MAC driver, a DSA switch driver, a PHY