^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright(c) 2017 Intel Corporation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #ifndef OPA_ADDR_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #define OPA_ADDR_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <rdma/opa_smi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #define OPA_SPECIAL_OUI (0x00066AULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #define OPA_MAKE_ID(x) (cpu_to_be64(OPA_SPECIAL_OUI << 40 | (x)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #define OPA_TO_IB_UCAST_LID(x) (((x) >= be16_to_cpu(IB_MULTICAST_LID_BASE)) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) ? 0 : x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #define OPA_GID_INDEX 0x1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * 0xF8 - 4 bits of multicast range and 1 bit for collective range
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * Example: For 24 bit LID space,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * Multicast range: 0xF00000 to 0xF7FFFF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * Collective range: 0xF80000 to 0xFFFFFE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define OPA_MCAST_NR 0x4 /* Number of top bits set */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define OPA_COLLECTIVE_NR 0x1 /* Number of bits after MCAST_NR */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * ib_is_opa_gid: Returns true if the top 24 bits of the gid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * contains the OPA_STL_OUI identifier. This identifies that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * the provided gid is a special purpose GID meant to carry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * extended LID information.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * @gid: The Global identifier
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) static inline bool ib_is_opa_gid(const union ib_gid *gid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) return ((be64_to_cpu(gid->global.interface_id) >> 40) ==
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) OPA_SPECIAL_OUI);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) * opa_get_lid_from_gid: Returns the last 32 bits of the gid.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) * OPA devices use one of the gids in the gid table to also
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) * store the lid.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) * @gid: The Global identifier
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) static inline u32 opa_get_lid_from_gid(const union ib_gid *gid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) return be64_to_cpu(gid->global.interface_id) & 0xFFFFFFFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) * opa_is_extended_lid: Returns true if dlid or slid are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) * extended.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) * @dlid: The DLID
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) * @slid: The SLID
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) static inline bool opa_is_extended_lid(__be32 dlid, __be32 slid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) if ((be32_to_cpu(dlid) >=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) be16_to_cpu(IB_MULTICAST_LID_BASE)) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) (be32_to_cpu(slid) >=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) be16_to_cpu(IB_MULTICAST_LID_BASE)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) /* Get multicast lid base */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) static inline u32 opa_get_mcast_base(u32 nr_top_bits)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) return (be32_to_cpu(OPA_LID_PERMISSIVE) << (32 - nr_top_bits));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) /* Check for a valid unicast LID for non-SM traffic types */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) static inline bool rdma_is_valid_unicast_lid(struct rdma_ah_attr *attr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) if (attr->type == RDMA_AH_ATTR_TYPE_IB) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) if (!rdma_ah_get_dlid(attr) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) rdma_ah_get_dlid(attr) >=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) be16_to_cpu(IB_MULTICAST_LID_BASE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) } else if (attr->type == RDMA_AH_ATTR_TYPE_OPA) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) if (!rdma_ah_get_dlid(attr) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) rdma_ah_get_dlid(attr) >=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) opa_get_mcast_base(OPA_MCAST_NR))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) #endif /* OPA_ADDR_H */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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