mirror of https://github.com/F-Stack/f-stack.git
90 lines
3.4 KiB
C
90 lines
3.4 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright 2008-2017 Cisco Systems, Inc. All rights reserved.
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* Copyright 2007 Nuova Systems, Inc. All rights reserved.
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*/
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#ifndef _WQ_ENET_DESC_H_
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#define _WQ_ENET_DESC_H_
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#include <rte_byteorder.h>
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/* Ethernet work queue descriptor: 16B */
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struct wq_enet_desc {
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uint64_t address;
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uint16_t length;
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uint16_t mss_loopback;
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uint16_t header_length_flags;
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uint16_t vlan_tag;
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};
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#define WQ_ENET_ADDR_BITS 64
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#define WQ_ENET_LEN_BITS 14
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#define WQ_ENET_LEN_MASK ((1 << WQ_ENET_LEN_BITS) - 1)
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#define WQ_ENET_MSS_BITS 14
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#define WQ_ENET_MSS_MASK ((1 << WQ_ENET_MSS_BITS) - 1)
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#define WQ_ENET_MSS_SHIFT 2
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#define WQ_ENET_LOOPBACK_SHIFT 1
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#define WQ_ENET_HDRLEN_BITS 10
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#define WQ_ENET_HDRLEN_MASK ((1 << WQ_ENET_HDRLEN_BITS) - 1)
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#define WQ_ENET_FLAGS_OM_BITS 2
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#define WQ_ENET_FLAGS_OM_MASK ((1 << WQ_ENET_FLAGS_OM_BITS) - 1)
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#define WQ_ENET_FLAGS_EOP_SHIFT 12
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#define WQ_ENET_FLAGS_CQ_ENTRY_SHIFT 13
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#define WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT 14
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#define WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT 15
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#define WQ_ENET_OFFLOAD_MODE_CSUM 0
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#define WQ_ENET_OFFLOAD_MODE_RESERVED 1
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#define WQ_ENET_OFFLOAD_MODE_CSUM_L4 2
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#define WQ_ENET_OFFLOAD_MODE_TSO 3
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static inline void wq_enet_desc_enc(struct wq_enet_desc *desc,
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uint64_t address, uint16_t length, uint16_t mss, uint16_t header_length,
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uint8_t offload_mode, uint8_t eop, uint8_t cq_entry, uint8_t fcoe_encap,
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uint8_t vlan_tag_insert, uint16_t vlan_tag, uint8_t loopback)
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{
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desc->address = rte_cpu_to_le_64(address);
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desc->length = rte_cpu_to_le_16(length & WQ_ENET_LEN_MASK);
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desc->mss_loopback = rte_cpu_to_le_16((mss & WQ_ENET_MSS_MASK) <<
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WQ_ENET_MSS_SHIFT | (loopback & 1) << WQ_ENET_LOOPBACK_SHIFT);
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desc->header_length_flags = rte_cpu_to_le_16
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((header_length & WQ_ENET_HDRLEN_MASK) |
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(offload_mode & WQ_ENET_FLAGS_OM_MASK) << WQ_ENET_HDRLEN_BITS |
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(eop & 1) << WQ_ENET_FLAGS_EOP_SHIFT |
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(cq_entry & 1) << WQ_ENET_FLAGS_CQ_ENTRY_SHIFT |
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(fcoe_encap & 1) << WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT |
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(vlan_tag_insert & 1) << WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT);
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desc->vlan_tag = rte_cpu_to_le_16(vlan_tag);
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}
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static inline void wq_enet_desc_dec(struct wq_enet_desc *desc,
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uint64_t *address, uint16_t *length, uint16_t *mss,
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uint16_t *header_length, uint8_t *offload_mode, uint8_t *eop,
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uint8_t *cq_entry, uint8_t *fcoe_encap, uint8_t *vlan_tag_insert,
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uint16_t *vlan_tag, uint8_t *loopback)
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{
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*address = rte_le_to_cpu_64(desc->address);
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*length = rte_le_to_cpu_16(desc->length) & WQ_ENET_LEN_MASK;
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*mss = (rte_le_to_cpu_16(desc->mss_loopback) >> WQ_ENET_MSS_SHIFT) &
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WQ_ENET_MSS_MASK;
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*loopback = (uint8_t)((rte_le_to_cpu_16(desc->mss_loopback) >>
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WQ_ENET_LOOPBACK_SHIFT) & 1);
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*header_length = rte_le_to_cpu_16(desc->header_length_flags) &
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WQ_ENET_HDRLEN_MASK;
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*offload_mode =
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(uint8_t)((rte_le_to_cpu_16(desc->header_length_flags) >>
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WQ_ENET_HDRLEN_BITS) & WQ_ENET_FLAGS_OM_MASK);
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*eop = (uint8_t)((rte_le_to_cpu_16(desc->header_length_flags) >>
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WQ_ENET_FLAGS_EOP_SHIFT) & 1);
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*cq_entry = (uint8_t)((rte_le_to_cpu_16(desc->header_length_flags) >>
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WQ_ENET_FLAGS_CQ_ENTRY_SHIFT) & 1);
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*fcoe_encap = (uint8_t)((rte_le_to_cpu_16(desc->header_length_flags) >>
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WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT) & 1);
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*vlan_tag_insert =
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(uint8_t)((rte_le_to_cpu_16(desc->header_length_flags) >>
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WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT) & 1);
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*vlan_tag = rte_le_to_cpu_16(desc->vlan_tag);
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}
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#endif /* _WQ_ENET_DESC_H_ */
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