We are using the RoCE ethertype in the MAC frames, and that is all of the similarity between usNIC protocol and RoCE. L3 is not the GRH, but rather a usNIC L3 header. Customers can distinguish between RoCE traffic and usNIC traffic by looking at the version of the L3 frame. It is set to 6 for RoCE traffic and to 8 for usNIC traffic.
Upinder On Sep 11, 2013, at 11:19 PM, Or Gerlitz <ogerl...@mellanox.com> wrote: > On 12/09/2013 00:07, Upinder Malhi (umalhi) wrote: >> Hi Or, >> The GRH is emulated by software. That is, when the app receives a >> packet, the first 40 bytes contain the GRH. > > I was asking what protocol you are using in the Ethernet MAC header on the > wire? > > Or. > >> >> >> On Sep 11, 2013, at 12:19 PM, Or Gerlitz <or.gerl...@gmail.com> wrote: >> >>> So you are supporting UD QPs but these QPs don't generate IBTA UD >>> headers nor iWARP headers, correct? >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-rdma" in >> the body of a message to majord...@vger.kernel.org >> More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
