1/* 2 * This file is based on code from OCTEON SDK by Cavium Networks. 3 * 4 * Copyright (c) 2003-2007 Cavium Networks 5 * 6 * This file is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License, Version 2, as 8 * published by the Free Software Foundation. 9 */ 10 11/* 12 * A few defines are used to control the operation of this driver: 13 * USE_ASYNC_IOBDMA 14 * Use asynchronous IO access to hardware. This uses Octeon's asynchronous 15 * IOBDMAs to issue IO accesses without stalling. Set this to zero 16 * to disable this. Note that IOBDMAs require CVMSEG. 17 * REUSE_SKBUFFS_WITHOUT_FREE 18 * Allows the TX path to free an skbuff into the FPA hardware pool. This 19 * can significantly improve performance for forwarding and bridging, but 20 * may be somewhat dangerous. Checks are made, but if any buffer is reused 21 * without the proper Linux cleanup, the networking stack may have very 22 * bizarre bugs. 23 */ 24#ifndef __ETHERNET_DEFINES_H__ 25#define __ETHERNET_DEFINES_H__ 26 27#include <asm/octeon/cvmx-config.h> 28 29#ifdef CONFIG_NETFILTER 30#define REUSE_SKBUFFS_WITHOUT_FREE 0 31#else 32#define REUSE_SKBUFFS_WITHOUT_FREE 1 33#endif 34 35#define USE_ASYNC_IOBDMA (CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE > 0) 36 37/* Maximum number of SKBs to try to free per xmit packet. */ 38#define MAX_OUT_QUEUE_DEPTH 1000 39 40#define FAU_TOTAL_TX_TO_CLEAN (CVMX_FAU_REG_END - sizeof(u32)) 41#define FAU_NUM_PACKET_BUFFERS_TO_FREE (FAU_TOTAL_TX_TO_CLEAN - sizeof(u32)) 42 43#define TOTAL_NUMBER_OF_PORTS (CVMX_PIP_NUM_INPUT_PORTS + 1) 44 45#endif /* __ETHERNET_DEFINES_H__ */ 46