| 1 |
|
| 2 | |
| 3 | * Copyright(c) 2017 Intel Corporation.
|
| 4 |
|
| 5 |
|
| 6 | #ifndef OPA_ADDR_H
|
| 7 | #define OPA_ADDR_H
|
| 8 |
|
| 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 0x1
|
| 16 | |
| 17 | * 0xF8 - 4 bits of multicast range and 1 bit for collective range
|
| 18 | * Example: For 24 bit LID space,
|
| 19 | * Multicast range: 0xF00000 to 0xF7FFFF
|
| 20 | * Collective range: 0xF80000 to 0xFFFFFE
|
| 21 |
|
| 22 | #define OPA_MCAST_NR 0x4
|
| 23 | #define OPA_COLLECTIVE_NR 0x1
|
| 24 |
|
| 25 | |
| 26 | * ib_is_opa_gid: Returns true if the top 24 bits of the gid
|
| 27 | * contains the OPA_STL_OUI identifier. This identifies that
|
| 28 | * the provided gid is a special purpose GID meant to carry
|
| 29 | * extended LID information.
|
| 30 | *
|
| 31 | * @gid: The Global identifier
|
| 32 |
|
| 33 | static 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 also
|
| 42 | * store the lid.
|
| 43 | *
|
| 44 | * @gid: The Global identifier
|
| 45 |
|
| 46 | static 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 are
|
| 53 | * extended.
|
| 54 | *
|
| 55 | * @dlid: The DLID
|
| 56 | * @slid: The SLID
|
| 57 |
|
| 58 | static 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 |
|
| 70 | static 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 |
|
| 76 | static 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
|