Eric Lee / smarc-fsl-linux-kernel

28 Jul, 2020

1 commit

  • 8f4c0e017   hsr: enhance netlink socket interface to support PRP ... Browse Code »

    Parallel Redundancy Protocol (PRP) is another redundancy protocol
    introduced by IEC 63439 standard. It is similar to HSR in many
    aspects:-

    - Use a pair of Ethernet interfaces to created the PRP device
    - Use a 6 byte redundancy protocol part (RCT, Redundancy Check
    Trailer) similar to HSR Tag.
    - Has Link Redundancy Entity (LRE) that works with RCT to implement
    redundancy.

    Key difference is that the protocol unit is a trailer instead of a
    prefix as in HSR. That makes it inter-operable with tradition network
    components such as bridges/switches which treat it as pad bytes,
    whereas HSR nodes requires some kind of translators (Called redbox) to
    talk to regular network devices. This features allows regular linux box
    to be converted to a DAN-P box. DAN-P stands for Dual Attached Node - PRP
    similar to DAN-H (Dual Attached Node - HSR).

    Add a comment at the header/source code to explicitly state that the
    driver files also handles PRP protocol as well.

    Signed-off-by: Murali Karicheri
    Signed-off-by: David S. Miller

    Murali Karicheri
     

07 Apr, 2019

1 commit

09 Jul, 2014

2 commits

04 Nov, 2013

1 commit

  • f421436a5   net/hsr: Add support for the High-availability Seamless Redundancy protocol (HSRv0) ... Browse Code »

    High-availability Seamless Redundancy ("HSR") provides instant failover
    redundancy for Ethernet networks. It requires a special network topology where
    all nodes are connected in a ring (each node having two physical network
    interfaces). It is suited for applications that demand high availability and
    very short reaction time.

    HSR acts on the Ethernet layer, using a registered Ethernet protocol type to
    send special HSR frames in both directions over the ring. The driver creates
    virtual network interfaces that can be used just like any ordinary Linux
    network interface, for IP/TCP/UDP traffic etc. All nodes in the network ring
    must be HSR capable.

    This code is a "best effort" to comply with the HSR standard as described in
    IEC 62439-3:2010 (HSRv0).

    Signed-off-by: Arvid Brodin
    Signed-off-by: David S. Miller

    Arvid Brodin