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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 _WQ_ENET_DESC_H_8#define _WQ_ENET_DESC_H_9 10/* Ethernet work queue descriptor: 16B */11struct wq_enet_desc {12 __le64 address;13 __le16 length;14 __le16 mss_loopback;15 __le16 header_length_flags;16 __le16 vlan_tag;17};18 19#define WQ_ENET_ADDR_BITS 6420#define WQ_ENET_LEN_BITS 1421#define WQ_ENET_LEN_MASK ((1 << WQ_ENET_LEN_BITS) - 1)22#define WQ_ENET_MSS_BITS 1423#define WQ_ENET_MSS_MASK ((1 << WQ_ENET_MSS_BITS) - 1)24#define WQ_ENET_MSS_SHIFT 225#define WQ_ENET_LOOPBACK_SHIFT 126#define WQ_ENET_HDRLEN_BITS 1027#define WQ_ENET_HDRLEN_MASK ((1 << WQ_ENET_HDRLEN_BITS) - 1)28#define WQ_ENET_FLAGS_OM_BITS 229#define WQ_ENET_FLAGS_OM_MASK ((1 << WQ_ENET_FLAGS_OM_BITS) - 1)30#define WQ_ENET_FLAGS_EOP_SHIFT 1231#define WQ_ENET_FLAGS_CQ_ENTRY_SHIFT 1332#define WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT 1433#define WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT 1534 35#define WQ_ENET_OFFLOAD_MODE_CSUM 036#define WQ_ENET_OFFLOAD_MODE_RESERVED 137#define WQ_ENET_OFFLOAD_MODE_CSUM_L4 238#define WQ_ENET_OFFLOAD_MODE_TSO 339 40static inline void wq_enet_desc_enc(struct wq_enet_desc *desc,41 u64 address, u16 length, u16 mss, u16 header_length,42 u8 offload_mode, u8 eop, u8 cq_entry, u8 fcoe_encap,43 u8 vlan_tag_insert, u16 vlan_tag, u8 loopback)44{45 desc->address = cpu_to_le64(address);46 desc->length = cpu_to_le16(length & WQ_ENET_LEN_MASK);47 desc->mss_loopback = cpu_to_le16((mss & WQ_ENET_MSS_MASK) <<48 WQ_ENET_MSS_SHIFT | (loopback & 1) << WQ_ENET_LOOPBACK_SHIFT);49 desc->header_length_flags = cpu_to_le16(50 (header_length & WQ_ENET_HDRLEN_MASK) |51 (offload_mode & WQ_ENET_FLAGS_OM_MASK) << WQ_ENET_HDRLEN_BITS |52 (eop & 1) << WQ_ENET_FLAGS_EOP_SHIFT |53 (cq_entry & 1) << WQ_ENET_FLAGS_CQ_ENTRY_SHIFT |54 (fcoe_encap & 1) << WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT |55 (vlan_tag_insert & 1) << WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT);56 desc->vlan_tag = cpu_to_le16(vlan_tag);57}58 59static inline void wq_enet_desc_dec(struct wq_enet_desc *desc,60 u64 *address, u16 *length, u16 *mss, u16 *header_length,61 u8 *offload_mode, u8 *eop, u8 *cq_entry, u8 *fcoe_encap,62 u8 *vlan_tag_insert, u16 *vlan_tag, u8 *loopback)63{64 *address = le64_to_cpu(desc->address);65 *length = le16_to_cpu(desc->length) & WQ_ENET_LEN_MASK;66 *mss = (le16_to_cpu(desc->mss_loopback) >> WQ_ENET_MSS_SHIFT) &67 WQ_ENET_MSS_MASK;68 *loopback = (u8)((le16_to_cpu(desc->mss_loopback) >>69 WQ_ENET_LOOPBACK_SHIFT) & 1);70 *header_length = le16_to_cpu(desc->header_length_flags) &71 WQ_ENET_HDRLEN_MASK;72 *offload_mode = (u8)((le16_to_cpu(desc->header_length_flags) >>73 WQ_ENET_HDRLEN_BITS) & WQ_ENET_FLAGS_OM_MASK);74 *eop = (u8)((le16_to_cpu(desc->header_length_flags) >>75 WQ_ENET_FLAGS_EOP_SHIFT) & 1);76 *cq_entry = (u8)((le16_to_cpu(desc->header_length_flags) >>77 WQ_ENET_FLAGS_CQ_ENTRY_SHIFT) & 1);78 *fcoe_encap = (u8)((le16_to_cpu(desc->header_length_flags) >>79 WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT) & 1);80 *vlan_tag_insert = (u8)((le16_to_cpu(desc->header_length_flags) >>81 WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT) & 1);82 *vlan_tag = le16_to_cpu(desc->vlan_tag);83}84 85#endif /* _WQ_ENET_DESC_H_ */86