04e8ec7419
There were defines which originally allowed sharing of some code with the enic kernel driver. The code has long since diverged and now the abstraction just makes the code harder to read. Mostly mechanical replacement of defines and reformatting. Signed-off-by: John Daley <johndale@cisco.com> Reviewed-by: Hyong Youb Kim <hyonkim@cisco.com>
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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