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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 _WQ_ENET_DESC_H_7#define _WQ_ENET_DESC_H_8 9/* Ethernet work queue descriptor: 16B */10struct wq_enet_desc {11 __le64 address;12 __le16 length;13 __le16 mss_loopback;14 __le16 header_length_flags;15 __le16 vlan_tag;16};17 18#define WQ_ENET_ADDR_BITS 6419#define WQ_ENET_LEN_BITS 1420#define WQ_ENET_LEN_MASK ((1 << WQ_ENET_LEN_BITS) - 1)21#define WQ_ENET_MSS_BITS 1422#define WQ_ENET_MSS_MASK ((1 << WQ_ENET_MSS_BITS) - 1)23#define WQ_ENET_MSS_SHIFT 224#define WQ_ENET_LOOPBACK_SHIFT 125#define WQ_ENET_HDRLEN_BITS 1026#define WQ_ENET_HDRLEN_MASK ((1 << WQ_ENET_HDRLEN_BITS) - 1)27#define WQ_ENET_FLAGS_OM_BITS 228#define WQ_ENET_FLAGS_OM_MASK ((1 << WQ_ENET_FLAGS_OM_BITS) - 1)29#define WQ_ENET_FLAGS_EOP_SHIFT 1230#define WQ_ENET_FLAGS_CQ_ENTRY_SHIFT 1331#define WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT 1432#define WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT 1533 34#define WQ_ENET_OFFLOAD_MODE_CSUM 035#define WQ_ENET_OFFLOAD_MODE_RESERVED 136#define WQ_ENET_OFFLOAD_MODE_CSUM_L4 237#define WQ_ENET_OFFLOAD_MODE_TSO 338 39static inline void wq_enet_desc_enc(struct wq_enet_desc *desc,40 u64 address, u16 length, u16 mss, u16 header_length,41 u8 offload_mode, u8 eop, u8 cq_entry, u8 fcoe_encap,42 u8 vlan_tag_insert, u16 vlan_tag, u8 loopback)43{44 desc->address = cpu_to_le64(address);45 desc->length = cpu_to_le16(length & WQ_ENET_LEN_MASK);46 desc->mss_loopback = cpu_to_le16((mss & WQ_ENET_MSS_MASK) <<47 WQ_ENET_MSS_SHIFT | (loopback & 1) << WQ_ENET_LOOPBACK_SHIFT);48 desc->header_length_flags = cpu_to_le16(49 (header_length & WQ_ENET_HDRLEN_MASK) |50 (offload_mode & WQ_ENET_FLAGS_OM_MASK) << WQ_ENET_HDRLEN_BITS |51 (eop & 1) << WQ_ENET_FLAGS_EOP_SHIFT |52 (cq_entry & 1) << WQ_ENET_FLAGS_CQ_ENTRY_SHIFT |53 (fcoe_encap & 1) << WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT |54 (vlan_tag_insert & 1) << WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT);55 desc->vlan_tag = cpu_to_le16(vlan_tag);56}57 58static inline void wq_enet_desc_dec(struct wq_enet_desc *desc,59 u64 *address, u16 *length, u16 *mss, u16 *header_length,60 u8 *offload_mode, u8 *eop, u8 *cq_entry, u8 *fcoe_encap,61 u8 *vlan_tag_insert, u16 *vlan_tag, u8 *loopback)62{63 *address = le64_to_cpu(desc->address);64 *length = le16_to_cpu(desc->length) & WQ_ENET_LEN_MASK;65 *mss = (le16_to_cpu(desc->mss_loopback) >> WQ_ENET_MSS_SHIFT) &66 WQ_ENET_MSS_MASK;67 *loopback = (u8)((le16_to_cpu(desc->mss_loopback) >>68 WQ_ENET_LOOPBACK_SHIFT) & 1);69 *header_length = le16_to_cpu(desc->header_length_flags) &70 WQ_ENET_HDRLEN_MASK;71 *offload_mode = (u8)((le16_to_cpu(desc->header_length_flags) >>72 WQ_ENET_HDRLEN_BITS) & WQ_ENET_FLAGS_OM_MASK);73 *eop = (u8)((le16_to_cpu(desc->header_length_flags) >>74 WQ_ENET_FLAGS_EOP_SHIFT) & 1);75 *cq_entry = (u8)((le16_to_cpu(desc->header_length_flags) >>76 WQ_ENET_FLAGS_CQ_ENTRY_SHIFT) & 1);77 *fcoe_encap = (u8)((le16_to_cpu(desc->header_length_flags) >>78 WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT) & 1);79 *vlan_tag_insert = (u8)((le16_to_cpu(desc->header_length_flags) >>80 WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT) & 1);81 *vlan_tag = le16_to_cpu(desc->vlan_tag);82}83 84#endif /* _WQ_ENET_DESC_H_ */85