2 * SPDX-License-Identifier: BSD-2-Clause OR GPL-2.0
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7 * redistributing this file, you may do so under either license.
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12 * it under the terms of version 2 of the GNU General Public License as
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18 * General Public License for more details.
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54 #include <linux/types.h>
55 #include <asm/unaligned.h>
56 #include <rdma/ib_verbs.h>
58 #define IB_SEQ_NAK (3 << 29)
60 /* AETH NAK opcode values */
61 #define IB_RNR_NAK 0x20
62 #define IB_NAK_PSN_ERROR 0x60
63 #define IB_NAK_INVALID_REQUEST 0x61
64 #define IB_NAK_REMOTE_ACCESS_ERROR 0x62
65 #define IB_NAK_REMOTE_OPERATIONAL_ERROR 0x63
66 #define IB_NAK_INVALID_RD_REQUEST 0x64
68 #define IB_BTH_REQ_ACK BIT(31)
69 #define IB_BTH_SOLICITED BIT(23)
70 #define IB_BTH_MIG_REQ BIT(22)
72 #define IB_GRH_VERSION 6
73 #define IB_GRH_VERSION_MASK 0xF
74 #define IB_GRH_VERSION_SHIFT 28
75 #define IB_GRH_TCLASS_MASK 0xFF
76 #define IB_GRH_TCLASS_SHIFT 20
77 #define IB_GRH_FLOW_MASK 0xFFFFF
78 #define IB_GRH_FLOW_SHIFT 0
79 #define IB_GRH_NEXT_HDR 0x1B
82 __be64 vaddr; /* potentially unaligned */
87 struct ib_atomic_eth {
88 __be64 vaddr; /* potentially unaligned */
90 __be64 swap_data; /* potentially unaligned */
91 __be64 compare_data; /* potentially unaligned */
105 __be64 atomic_ack_eth; /* potentially unaligned */
110 struct ib_atomic_eth atomic_eth;
113 struct ib_other_headers {
123 struct ib_other_headers oth;
125 struct ib_other_headers oth;
129 /* accessors for unaligned __be64 items */
131 static inline u64 ib_u64_get(__be64 *p)
133 return get_unaligned_be64(p);
136 static inline void ib_u64_put(u64 val, __be64 *p)
138 put_unaligned_be64(val, p);
141 static inline u64 get_ib_reth_vaddr(struct ib_reth *reth)
143 return ib_u64_get(&reth->vaddr);
146 static inline void put_ib_reth_vaddr(u64 val, struct ib_reth *reth)
148 ib_u64_put(val, &reth->vaddr);
151 static inline u64 get_ib_ateth_vaddr(struct ib_atomic_eth *ateth)
153 return ib_u64_get(&ateth->vaddr);
156 static inline void put_ib_ateth_vaddr(u64 val, struct ib_atomic_eth *ateth)
158 ib_u64_put(val, &ateth->vaddr);
161 static inline u64 get_ib_ateth_swap(struct ib_atomic_eth *ateth)
163 return ib_u64_get(&ateth->swap_data);
166 static inline void put_ib_ateth_swap(u64 val, struct ib_atomic_eth *ateth)
168 ib_u64_put(val, &ateth->swap_data);
171 static inline u64 get_ib_ateth_compare(struct ib_atomic_eth *ateth)
173 return ib_u64_get(&ateth->compare_data);
176 static inline void put_ib_ateth_compare(u64 val, struct ib_atomic_eth *ateth)
178 ib_u64_put(val, &ateth->compare_data);
181 #endif /* IB_HDRS_H */