Lines Matching full:dsa

653 3.2.1 DSA (Distributed Switch Architecture) switches
658 a port multiplier with optional forwarding acceleration features.  Each DSA
663 When a DSA switch is attached to a host port, PTP synchronization has to
665 jitter between the host port and its PTP partner. For this reason, some DSA
668 measure wire and PHY propagation latencies. Timestamping DSA switches are
670 for the fact that the DSA interfaces are in fact virtual in terms of network
672 interfaces of a DSA switch to share the same PHC.
674 By design, PTP timestamping with a DSA switch does not need any special
676 host port also supports PTP timestamping, DSA will take care of intercepting
680 anybody else except for the DSA switch port must be prevented from doing so.
682 In the generic layer, DSA provides the following infrastructure for PTP
710 - ``.port_rxtstamp()``: On RX, the BPF classifier is run by DSA to
716   DSA header, or attached in other ways to the packet), or out-of-band
719   that case, it is the responsibility of the DSA driver to call
726 hence they do not have a representation in terms of a network interface as DSA
737 driver.  Therefore, as opposed to DSA switches, modifications need to be done
750   will be called now, to determine, using logic very similar to DSA, whether
751   deferral for RX timestamping is necessary.  Again like DSA, it becomes the
782 Stacked PHCs, especially DSA (but not only) - since that doesn't require any
790 Any TX timestamping logic, be it a plain MAC driver, a DSA switch driver, a PHY