apps.mellanox.connectx: add support for PCAM register #1512
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The ethernet port speed is read from the eth_proto_oper field of the PTYS register. This field was extended with the ext_proto_oper field in newer devices. In particular, 200G and 400G speeds are contained in this field rather than eth_ptoto_oper. Which of these fields is valid for the device is determined by the field ptys_extended_ethernet provided by the PCAM (Ports CApabilities Mask) register. Whether this register exists or not is, in turn, determined by the pcam_reg flag of the HCA general cpabilities.
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The ethernet port speed is read from the eth_proto_oper field of the PTYS register. This field was extended with the ext_proto_oper field in newer devices. In particular, 200G and 400G speeds are contained in this field rather than eth_ptoto_oper.
Which of these fields is valid for the device is determined by the field ptys_extended_ethernet provided by the PCAM (Ports CApabilities Mask) register. Whether this register exists or not is, in turn, determined by the pcam_reg flag of the HCA general cpabilities.