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1/* SPDX-License-Identifier: GPL-2.0-only */2/*3 * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved.4 * Copyright 2007 Nuova Systems, Inc. All rights reserved.5 */6 7#ifndef _RQ_ENET_DESC_H_8#define _RQ_ENET_DESC_H_9 10/* Ethernet receive queue descriptor: 16B */11struct rq_enet_desc {12 __le64 address;13 __le16 length_type;14 u8 reserved[6];15};16 17enum rq_enet_type_types {18 RQ_ENET_TYPE_ONLY_SOP = 0,19 RQ_ENET_TYPE_NOT_SOP = 1,20 RQ_ENET_TYPE_RESV2 = 2,21 RQ_ENET_TYPE_RESV3 = 3,22};23 24#define RQ_ENET_ADDR_BITS 6425#define RQ_ENET_LEN_BITS 1426#define RQ_ENET_LEN_MASK ((1 << RQ_ENET_LEN_BITS) - 1)27#define RQ_ENET_TYPE_BITS 228#define RQ_ENET_TYPE_MASK ((1 << RQ_ENET_TYPE_BITS) - 1)29 30static inline void rq_enet_desc_enc(struct rq_enet_desc *desc,31 u64 address, u8 type, u16 length)32{33 desc->address = cpu_to_le64(address);34 desc->length_type = cpu_to_le16((length & RQ_ENET_LEN_MASK) |35 ((type & RQ_ENET_TYPE_MASK) << RQ_ENET_LEN_BITS));36}37 38static inline void rq_enet_desc_dec(struct rq_enet_desc *desc,39 u64 *address, u8 *type, u16 *length)40{41 *address = le64_to_cpu(desc->address);42 *length = le16_to_cpu(desc->length_type) & RQ_ENET_LEN_MASK;43 *type = (u8)((le16_to_cpu(desc->length_type) >> RQ_ENET_LEN_BITS) &44 RQ_ENET_TYPE_MASK);45}46 47#endif /* _RQ_ENET_DESC_H_ */48