On 10/20/2016 01:08 PM, Murali Karicheri wrote: > David, > > On 10/10/2016 02:34 PM, Murali Karicheri wrote: >> All, >> >> Wondering if there plan to add PRP driver support, like HSR in Linux? AFAIK, >> PRP >> adds trailor to Ethernet frame and is used for Redundancy management like >> HSR. >> So wondering why this is not supported. >> >> Thanks >> > I need to work on a prp driver for Linux. So if there is already someone > working > on this, I would like to join and contribute. Either way please respond so > that > I can work to add this support. > > I am also working to add support for offload HSR functions to hardware and > will > need to modify the hsr driver to support the same. So any suggestion as to > how this > can be done, will be appreciated. > > Here is what I believe should happen to support this at a higher level > > hsr capable NIC (with firmware support) may able to > - duplicate packets at the egress. So only one copy needs to be forwarded to > the > NIC > - Discard the duplicate at the ingress. So forward only one to copy to the > ethernet > driver > - Manage supervision of the network. Keep node list and their status > > It could be a subset of the above. So I am hoping this can be published by > the Ethernet > driver as a set of features. The hsr driver can then look at this features and > decide to offload and disable same functionality at the hsr driver. Also the > node list/status > has to be polled from the underlying hardware. > > PRP is similar to HSR in many respect. Redundancy management uses a suffix > tag to the MAC > frame instead of prefix used by HSR. So they are more transparently handled > by > switches or routers. Probably i need to do > - rename net/hsr to net/hsr-prp > - restructure the current set of files to add prp support > > Thanks > + Arvid
Didn't copy HSR owner in my original email. Copying now. -- Murali Karicheri Linux Kernel, Keystone
