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6bf9d8f6 | 1 | /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */ |
87f0faad DL |
2 | /* |
3 | * Copyright(c) 2017 Intel Corporation. | |
87f0faad DL |
4 | */ |
5 | ||
6 | #ifndef OPA_ADDR_H | |
7 | #define OPA_ADDR_H | |
8 | ||
13c19222 DH |
9 | #include <rdma/opa_smi.h> |
10 | ||
87f0faad DL |
11 | #define OPA_SPECIAL_OUI (0x00066AULL) |
12 | #define OPA_MAKE_ID(x) (cpu_to_be64(OPA_SPECIAL_OUI << 40 | (x))) | |
582faf31 DC |
13 | #define OPA_TO_IB_UCAST_LID(x) (((x) >= be16_to_cpu(IB_MULTICAST_LID_BASE)) \ |
14 | ? 0 : x) | |
88733e3b | 15 | #define OPA_GID_INDEX 0x1 |
13c19222 DH |
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 /* Number of top bits set */ | |
23 | #define OPA_COLLECTIVE_NR 0x1 /* Number of bits after MCAST_NR */ | |
24 | ||
87f0faad DL |
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 | */ | |
d98bb7f7 | 33 | static inline bool ib_is_opa_gid(const union ib_gid *gid) |
87f0faad DL |
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 | */ | |
d98bb7f7 | 46 | static inline u32 opa_get_lid_from_gid(const union ib_gid *gid) |
87f0faad DL |
47 | { |
48 | return be64_to_cpu(gid->global.interface_id) & 0xFFFFFFFF; | |
49 | } | |
e92aa00a HD |
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 | */ | |
a917374e | 58 | static inline bool opa_is_extended_lid(__be32 dlid, __be32 slid) |
e92aa00a HD |
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; | |
a917374e DH |
65 | |
66 | return false; | |
e92aa00a | 67 | } |
13c19222 DH |
68 | |
69 | /* Get multicast lid base */ | |
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 | ||
af808ece VSD |
75 | /* Check for a valid unicast LID for non-SM traffic types */ |
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) >= | |
4eefd62c | 81 | be16_to_cpu(IB_MULTICAST_LID_BASE)) |
af808ece VSD |
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 | } | |
87f0faad | 91 | #endif /* OPA_ADDR_H */ |