projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 9f95a23c TL |
1 | /* SPDX-License-Identifier: BSD-3-Clause |
| 2 | * Copyright 2008-2017 Cisco Systems, Inc. All rights reserved. | |
| 7c673cae | 3 | * Copyright 2007 Nuova Systems, Inc. All rights reserved. |
| 7c673cae FG |
4 | */ |
| 5 | ||
| 6 | #ifndef _RQ_ENET_DESC_H_ | |
| 7 | #define _RQ_ENET_DESC_H_ | |
| 8 | ||
| 9 | /* Ethernet receive queue descriptor: 16B */ | |
| 10 | struct rq_enet_desc { | |
| 11 | __le64 address; | |
| 12 | __le16 length_type; | |
| 13 | u8 reserved[6]; | |
| 14 | }; | |
| 15 | ||
| 16 | enum rq_enet_type_types { | |
| 17 | RQ_ENET_TYPE_ONLY_SOP = 0, | |
| 18 | RQ_ENET_TYPE_NOT_SOP = 1, | |
| 19 | RQ_ENET_TYPE_RESV2 = 2, | |
| 20 | RQ_ENET_TYPE_RESV3 = 3, | |
| 21 | }; | |
| 22 | ||
| 23 | #define RQ_ENET_ADDR_BITS 64 | |
| 24 | #define RQ_ENET_LEN_BITS 14 | |
| 25 | #define RQ_ENET_LEN_MASK ((1 << RQ_ENET_LEN_BITS) - 1) | |
| 26 | #define RQ_ENET_TYPE_BITS 2 | |
| 27 | #define RQ_ENET_TYPE_MASK ((1 << RQ_ENET_TYPE_BITS) - 1) | |
| 28 | ||
| 29 | static inline void rq_enet_desc_enc(volatile struct rq_enet_desc *desc, | |
| 30 | u64 address, u8 type, u16 length) | |
| 31 | { | |
| 32 | desc->address = cpu_to_le64(address); | |
| 33 | desc->length_type = cpu_to_le16((length & RQ_ENET_LEN_MASK) | | |
| 34 | ((type & RQ_ENET_TYPE_MASK) << RQ_ENET_LEN_BITS)); | |
| 35 | } | |
| 36 | ||
| 37 | static inline void rq_enet_desc_dec(struct rq_enet_desc *desc, | |
| 38 | u64 *address, u8 *type, u16 *length) | |
| 39 | { | |
| 40 | *address = le64_to_cpu(desc->address); | |
| 41 | *length = le16_to_cpu(desc->length_type) & RQ_ENET_LEN_MASK; | |
| 42 | *type = (u8)((le16_to_cpu(desc->length_type) >> RQ_ENET_LEN_BITS) & | |
| 43 | RQ_ENET_TYPE_MASK); | |
| 44 | } | |
| 45 | ||
| 46 | #endif /* _RQ_ENET_DESC_H_ */ |