Re: Query regarding MAD_DEMUX and Secure Host
On Mon, 15 Dec 2014 15:07:58 +0530 Bob Biloxi iambobbil...@gmail.com wrote: am I correct in my understanding when i say that MAD_DEMUX feature is not required to be supported/implemented in Mellanox RoCE Drivers? It is required only for Infiniband drivers? Actually, you will need to support MAD_DEMUX anyway. If not, the CONF_SPECIAL_QP command will fail if Secure Host mode is operating. CONF_SPECIAL_QP is required for RoCE as well, since if it is not called we will not have QP1. However, since this command maps QP0 as well to a QP, the MAD_DEMUX command is still required. -Jack -- 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
Re: Query regarding MAD_DEMUX and Secure Host
Hi Jack, Thank you so much for clarifying this. Now I understand. It all ties down to QP1. To support QP1, we need to support MAD_DEMUX This is really helpful. Best Regards, Bob On Tue, Dec 16, 2014 at 9:03 PM, Jack Morgenstein ja...@dev.mellanox.co.il wrote: On Mon, 15 Dec 2014 15:07:58 +0530 Bob Biloxi iambobbil...@gmail.com wrote: am I correct in my understanding when i say that MAD_DEMUX feature is not required to be supported/implemented in Mellanox RoCE Drivers? It is required only for Infiniband drivers? Actually, you will need to support MAD_DEMUX anyway. If not, the CONF_SPECIAL_QP command will fail if Secure Host mode is operating. CONF_SPECIAL_QP is required for RoCE as well, since if it is not called we will not have QP1. However, since this command maps QP0 as well to a QP, the MAD_DEMUX command is still required. -Jack -- 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
Query regarding MAD_DEMUX and Secure Host
Hi, I was going through the mlx4 code for Secure Host and MAD_DEMUX feature. I had a few queries..hoping that i can get these clarified. If i understand correctly mlx4 codebase (mlx4_core/mlx4_en/mlx4_ib drivers) take care of both RoCE and Infiniband adapters ( in both dedicated and shared/SRIOV mode) (1) After reading through the RoCE standard, I understood that Subnet Management features are not supported in RoCE(they are part of Infiniband) (2) Also, as i understand MAD_DEMUX mechanism is used to control which management traffic is passed to the host. So by correlating these two( 1 2), am I correct in my understanding when i say that MAD_DEMUX feature is not required to be supported/implemented in Mellanox RoCE Drivers? It is required only for Infiniband drivers? I would be really thankful to get my understanding clarified. Thanks so much Best Regards, Bob -- 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
