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1/* SPDX-License-Identifier: GPL-2.0-only */2/*3 * Copyright 2008 Cisco Systems, Inc. All rights reserved.4 * Copyright 2007 Nuova Systems, Inc. All rights reserved.5 */6#ifndef _RQ_ENET_DESC_H_7#define _RQ_ENET_DESC_H_8 9/* Ethernet receive queue descriptor: 16B */10struct rq_enet_desc {11 __le64 address;12 __le16 length_type;13 u8 reserved[6];14};15 16enum 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 6424#define RQ_ENET_LEN_BITS 1425#define RQ_ENET_LEN_MASK ((1 << RQ_ENET_LEN_BITS) - 1)26#define RQ_ENET_TYPE_BITS 227#define RQ_ENET_TYPE_MASK ((1 << RQ_ENET_TYPE_BITS) - 1)28 29static inline void rq_enet_desc_enc(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 37static 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_ */47