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/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */ /* * Copyright(c) 2017 Intel Corporation. */ #ifndef OPA_ADDR_H #define OPA_ADDR_H #include <rdma/opa_smi.h> #define OPA_SPECIAL_OUI (0x00066AULL) #define OPA_MAKE_ID(x) (cpu_to_be64(OPA_SPECIAL_OUI << 40 | (x))) #define OPA_TO_IB_UCAST_LID(x) (((x) >= be16_to_cpu(IB_MULTICAST_LID_BASE)) \ ? 0 : x) #define OPA_GID_INDEX 0x1 /** * 0xF8 - 4 bits of multicast range and 1 bit for collective range * Example: For 24 bit LID space, * Multicast range: 0xF00000 to 0xF7FFFF * Collective range: 0xF80000 to 0xFFFFFE */ #define OPA_MCAST_NR 0x4 /* Number of top bits set */ #define OPA_COLLECTIVE_NR 0x1 /* Number of bits after MCAST_NR */ /** * ib_is_opa_gid: Returns true if the top 24 bits of the gid * contains the OPA_STL_OUI identifier. This identifies that * the provided gid is a special purpose GID meant to carry * extended LID information. * * @gid: The Global identifier */ static inline bool ib_is_opa_gid(const union ib_gid *gid) { return ((be64_to_cpu(gid->global.interface_id) >> 40) == OPA_SPECIAL_OUI); } /** * opa_get_lid_from_gid: Returns the last 32 bits of the gid. * OPA devices use one of the gids in the gid table to also * store the lid. * * @gid: The Global identifier */ static inline u32 opa_get_lid_from_gid(const union ib_gid *gid) { return be64_to_cpu(gid->global.interface_id) & 0xFFFFFFFF; } /** * opa_is_extended_lid: Returns true if dlid or slid are * extended. * * @dlid: The DLID * @slid: The SLID */ static inline bool opa_is_extended_lid(__be32 dlid, __be32 slid) { if ((be32_to_cpu(dlid) >= be16_to_cpu(IB_MULTICAST_LID_BASE)) || (be32_to_cpu(slid) >= be16_to_cpu(IB_MULTICAST_LID_BASE))) return true; return false; } /* Get multicast lid base */ static inline u32 opa_get_mcast_base(u32 nr_top_bits) { return (be32_to_cpu(OPA_LID_PERMISSIVE) << (32 - nr_top_bits)); } /* Check for a valid unicast LID for non-SM traffic types */ static inline bool rdma_is_valid_unicast_lid(struct rdma_ah_attr *attr) { if (attr->type == RDMA_AH_ATTR_TYPE_IB) { if (!rdma_ah_get_dlid(attr) || rdma_ah_get_dlid(attr) >= be16_to_cpu(IB_MULTICAST_LID_BASE)) return false; } else if (attr->type == RDMA_AH_ATTR_TYPE_OPA) { if (!rdma_ah_get_dlid(attr) || rdma_ah_get_dlid(attr) >= opa_get_mcast_base(OPA_MCAST_NR)) return false; } return true; } #endif /* OPA_ADDR_H */