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1/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */2/*3 * Copyright(c) 2017 Intel Corporation.4 */5 6#ifndef OPA_ADDR_H7#define OPA_ADDR_H8 9#include <rdma/opa_smi.h>10 11#define OPA_SPECIAL_OUI (0x00066AULL)12#define OPA_MAKE_ID(x) (cpu_to_be64(OPA_SPECIAL_OUI << 40 | (x)))13#define OPA_TO_IB_UCAST_LID(x) (((x) >= be16_to_cpu(IB_MULTICAST_LID_BASE)) \14 ? 0 : x)15#define OPA_GID_INDEX 0x116/**17 * 0xF8 - 4 bits of multicast range and 1 bit for collective range18 * Example: For 24 bit LID space,19 * Multicast range: 0xF00000 to 0xF7FFFF20 * Collective range: 0xF80000 to 0xFFFFFE21 */22#define OPA_MCAST_NR 0x4 /* Number of top bits set */23#define OPA_COLLECTIVE_NR 0x1 /* Number of bits after MCAST_NR */24 25/**26 * ib_is_opa_gid: Returns true if the top 24 bits of the gid27 * contains the OPA_STL_OUI identifier. This identifies that28 * the provided gid is a special purpose GID meant to carry29 * extended LID information.30 *31 * @gid: The Global identifier32 */33static inline bool ib_is_opa_gid(const union ib_gid *gid)34{35 return ((be64_to_cpu(gid->global.interface_id) >> 40) ==36 OPA_SPECIAL_OUI);37}38 39/**40 * opa_get_lid_from_gid: Returns the last 32 bits of the gid.41 * OPA devices use one of the gids in the gid table to also42 * store the lid.43 *44 * @gid: The Global identifier45 */46static inline u32 opa_get_lid_from_gid(const union ib_gid *gid)47{48 return be64_to_cpu(gid->global.interface_id) & 0xFFFFFFFF;49}50 51/**52 * opa_is_extended_lid: Returns true if dlid or slid are53 * extended.54 *55 * @dlid: The DLID56 * @slid: The SLID57 */58static inline bool opa_is_extended_lid(__be32 dlid, __be32 slid)59{60 if ((be32_to_cpu(dlid) >=61 be16_to_cpu(IB_MULTICAST_LID_BASE)) ||62 (be32_to_cpu(slid) >=63 be16_to_cpu(IB_MULTICAST_LID_BASE)))64 return true;65 66 return false;67}68 69/* Get multicast lid base */70static inline u32 opa_get_mcast_base(u32 nr_top_bits)71{72 return (be32_to_cpu(OPA_LID_PERMISSIVE) << (32 - nr_top_bits));73}74 75/* Check for a valid unicast LID for non-SM traffic types */76static inline bool rdma_is_valid_unicast_lid(struct rdma_ah_attr *attr)77{78 if (attr->type == RDMA_AH_ATTR_TYPE_IB) {79 if (!rdma_ah_get_dlid(attr) ||80 rdma_ah_get_dlid(attr) >=81 be16_to_cpu(IB_MULTICAST_LID_BASE))82 return false;83 } else if (attr->type == RDMA_AH_ATTR_TYPE_OPA) {84 if (!rdma_ah_get_dlid(attr) ||85 rdma_ah_get_dlid(attr) >=86 opa_get_mcast_base(OPA_MCAST_NR))87 return false;88 }89 return true;90}91#endif /* OPA_ADDR_H */92