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 -- Murali Karicheri Linux Kernel, Keystone
