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e6550b3ee1
Based on the normalized pattern:
this program is free software you may redistribute it and/or modify it
under the terms of the gnu general public license as published by the
free software foundation version 2 of the license the software is
provided as is without warranty of any kind express or implied
including but not limited to the warranties of merchantability fitness
for a particular purpose and noninfringement in no event shall the
authors or copyright holders be liable for any claim damages or other
liability whether in an action of contract tort or otherwise arising
from out of or in connection with the software or the use or other
dealings in the software
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
47 lines
1.2 KiB
C
47 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright 2008 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 _RQ_ENET_DESC_H_
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#define _RQ_ENET_DESC_H_
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/* Ethernet receive queue descriptor: 16B */
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struct rq_enet_desc {
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__le64 address;
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__le16 length_type;
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u8 reserved[6];
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};
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enum rq_enet_type_types {
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RQ_ENET_TYPE_ONLY_SOP = 0,
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RQ_ENET_TYPE_NOT_SOP = 1,
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RQ_ENET_TYPE_RESV2 = 2,
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RQ_ENET_TYPE_RESV3 = 3,
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};
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#define RQ_ENET_ADDR_BITS 64
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#define RQ_ENET_LEN_BITS 14
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#define RQ_ENET_LEN_MASK ((1 << RQ_ENET_LEN_BITS) - 1)
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#define RQ_ENET_TYPE_BITS 2
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#define RQ_ENET_TYPE_MASK ((1 << RQ_ENET_TYPE_BITS) - 1)
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static inline void rq_enet_desc_enc(struct rq_enet_desc *desc,
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u64 address, u8 type, u16 length)
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{
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desc->address = cpu_to_le64(address);
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desc->length_type = cpu_to_le16((length & RQ_ENET_LEN_MASK) |
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((type & RQ_ENET_TYPE_MASK) << RQ_ENET_LEN_BITS));
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}
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static inline void rq_enet_desc_dec(struct rq_enet_desc *desc,
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u64 *address, u8 *type, u16 *length)
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{
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*address = le64_to_cpu(desc->address);
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*length = le16_to_cpu(desc->length_type) & RQ_ENET_LEN_MASK;
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*type = (u8)((le16_to_cpu(desc->length_type) >> RQ_ENET_LEN_BITS) &
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RQ_ENET_TYPE_MASK);
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}
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#endif /* _RQ_ENET_DESC_H_ */
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