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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586878889909192/* 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 */