70 lines
2.1 KiB
C
70 lines
2.1 KiB
C
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/***********************license start***************
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* Author: Cavium Networks
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*
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* Contact: support@caviumnetworks.com
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* This file is part of the OCTEON SDK
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*
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* Copyright (c) 2003-2008 Cavium Networks
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*
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* This file is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License, Version 2, as
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* published by the Free Software Foundation.
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*
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* This file is distributed in the hope that it will be useful, but
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* AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
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* NONINFRINGEMENT. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this file; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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* or visit http://www.gnu.org/licenses/.
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*
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* This file may also be available under a different license from Cavium.
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* Contact Cavium Networks for more information
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***********************license end**************************************/
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/*
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* Packet buffer defines.
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*/
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#ifndef __CVMX_PACKET_H__
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#define __CVMX_PACKET_H__
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/**
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* This structure defines a buffer pointer on Octeon
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*/
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union cvmx_buf_ptr {
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void *ptr;
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uint64_t u64;
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struct {
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#ifdef __BIG_ENDIAN_BITFIELD
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/* if set, invert the "free" pick of the overall
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* packet. HW always sets this bit to 0 on inbound
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* packet */
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uint64_t i:1;
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/* Indicates the amount to back up to get to the
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* buffer start in cache lines. In most cases this is
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* less than one complete cache line, so the value is
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* zero */
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uint64_t back:4;
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/* The pool that the buffer came from / goes to */
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uint64_t pool:3;
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/* The size of the segment pointed to by addr (in bytes) */
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uint64_t size:16;
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/* Pointer to the first byte of the data, NOT buffer */
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uint64_t addr:40;
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#else
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uint64_t addr:40;
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uint64_t size:16;
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uint64_t pool:3;
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uint64_t back:4;
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uint64_t i:1;
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#endif
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} s;
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};
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#endif /* __CVMX_PACKET_H__ */
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