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