1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright 2008-2017 Cisco Systems, Inc. All rights reserved. 3 * Copyright 2007 Nuova Systems, Inc. All rights reserved. 4 */ 5 6 #ifndef _WQ_ENET_DESC_H_ 7 #define _WQ_ENET_DESC_H_ 8 9 #include <rte_byteorder.h> 10 11 /* Ethernet work queue descriptor: 16B */ 12 struct wq_enet_desc { 13 uint64_t address; 14 uint16_t length; 15 uint16_t mss_loopback; 16 uint16_t header_length_flags; 17 uint16_t vlan_tag; 18 }; 19 20 #define WQ_ENET_ADDR_BITS 64 21 #define WQ_ENET_LEN_BITS 14 22 #define WQ_ENET_LEN_MASK ((1 << WQ_ENET_LEN_BITS) - 1) 23 #define WQ_ENET_MSS_BITS 14 24 #define WQ_ENET_MSS_MASK ((1 << WQ_ENET_MSS_BITS) - 1) 25 #define WQ_ENET_MSS_SHIFT 2 26 #define WQ_ENET_LOOPBACK_SHIFT 1 27 #define WQ_ENET_HDRLEN_BITS 10 28 #define WQ_ENET_HDRLEN_MASK ((1 << WQ_ENET_HDRLEN_BITS) - 1) 29 #define WQ_ENET_FLAGS_OM_BITS 2 30 #define WQ_ENET_FLAGS_OM_MASK ((1 << WQ_ENET_FLAGS_OM_BITS) - 1) 31 #define WQ_ENET_FLAGS_EOP_SHIFT 12 32 #define WQ_ENET_FLAGS_CQ_ENTRY_SHIFT 13 33 #define WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT 14 34 #define WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT 15 35 36 #define WQ_ENET_OFFLOAD_MODE_CSUM 0 37 #define WQ_ENET_OFFLOAD_MODE_RESERVED 1 38 #define WQ_ENET_OFFLOAD_MODE_CSUM_L4 2 39 #define WQ_ENET_OFFLOAD_MODE_TSO 3 40 41 static inline void wq_enet_desc_enc(struct wq_enet_desc *desc, 42 uint64_t address, uint16_t length, uint16_t mss, uint16_t header_length, 43 uint8_t offload_mode, uint8_t eop, uint8_t cq_entry, uint8_t fcoe_encap, 44 uint8_t vlan_tag_insert, uint16_t vlan_tag, uint8_t loopback) 45 { 46 desc->address = rte_cpu_to_le_64(address); 47 desc->length = rte_cpu_to_le_16(length & WQ_ENET_LEN_MASK); 48 desc->mss_loopback = rte_cpu_to_le_16((mss & WQ_ENET_MSS_MASK) << 49 WQ_ENET_MSS_SHIFT | (loopback & 1) << WQ_ENET_LOOPBACK_SHIFT); 50 desc->header_length_flags = rte_cpu_to_le_16 51 ((header_length & WQ_ENET_HDRLEN_MASK) | 52 (offload_mode & WQ_ENET_FLAGS_OM_MASK) << WQ_ENET_HDRLEN_BITS | 53 (eop & 1) << WQ_ENET_FLAGS_EOP_SHIFT | 54 (cq_entry & 1) << WQ_ENET_FLAGS_CQ_ENTRY_SHIFT | 55 (fcoe_encap & 1) << WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT | 56 (vlan_tag_insert & 1) << WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT); 57 desc->vlan_tag = rte_cpu_to_le_16(vlan_tag); 58 } 59 60 static inline void wq_enet_desc_dec(struct wq_enet_desc *desc, 61 uint64_t *address, uint16_t *length, uint16_t *mss, 62 uint16_t *header_length, uint8_t *offload_mode, uint8_t *eop, 63 uint8_t *cq_entry, uint8_t *fcoe_encap, uint8_t *vlan_tag_insert, 64 uint16_t *vlan_tag, uint8_t *loopback) 65 { 66 *address = rte_le_to_cpu_64(desc->address); 67 *length = rte_le_to_cpu_16(desc->length) & WQ_ENET_LEN_MASK; 68 *mss = (rte_le_to_cpu_16(desc->mss_loopback) >> WQ_ENET_MSS_SHIFT) & 69 WQ_ENET_MSS_MASK; 70 *loopback = (uint8_t)((rte_le_to_cpu_16(desc->mss_loopback) >> 71 WQ_ENET_LOOPBACK_SHIFT) & 1); 72 *header_length = rte_le_to_cpu_16(desc->header_length_flags) & 73 WQ_ENET_HDRLEN_MASK; 74 *offload_mode = 75 (uint8_t)((rte_le_to_cpu_16(desc->header_length_flags) >> 76 WQ_ENET_HDRLEN_BITS) & WQ_ENET_FLAGS_OM_MASK); 77 *eop = (uint8_t)((rte_le_to_cpu_16(desc->header_length_flags) >> 78 WQ_ENET_FLAGS_EOP_SHIFT) & 1); 79 *cq_entry = (uint8_t)((rte_le_to_cpu_16(desc->header_length_flags) >> 80 WQ_ENET_FLAGS_CQ_ENTRY_SHIFT) & 1); 81 *fcoe_encap = (uint8_t)((rte_le_to_cpu_16(desc->header_length_flags) >> 82 WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT) & 1); 83 *vlan_tag_insert = 84 (uint8_t)((rte_le_to_cpu_16(desc->header_length_flags) >> 85 WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT) & 1); 86 *vlan_tag = rte_le_to_cpu_16(desc->vlan_tag); 87 } 88 89 #endif /* _WQ_ENET_DESC_H_ */ 90