linux/drivers/staging/octeon/ethernet-defines.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * This file is based on code from OCTEON SDK by Cavium Networks.
 *
 * Copyright (c) 2003-2007 Cavium Networks
 */

/*
 * A few defines are used to control the operation of this driver:
 *  USE_ASYNC_IOBDMA
 *      Use asynchronous IO access to hardware. This uses Octeon's asynchronous
 *      IOBDMAs to issue IO accesses without stalling. Set this to zero
 *      to disable this. Note that IOBDMAs require CVMSEG.
 *  REUSE_SKBUFFS_WITHOUT_FREE
 *      Allows the TX path to free an skbuff into the FPA hardware pool. This
 *      can significantly improve performance for forwarding and bridging, but
 *      may be somewhat dangerous. Checks are made, but if any buffer is reused
 *      without the proper Linux cleanup, the networking stack may have very
 *      bizarre bugs.
 */
#ifndef __ETHERNET_DEFINES_H__
#define __ETHERNET_DEFINES_H__

#ifdef CONFIG_NETFILTER
#define REUSE_SKBUFFS_WITHOUT_FREE
#else
#define REUSE_SKBUFFS_WITHOUT_FREE
#endif

#define USE_ASYNC_IOBDMA

/* Maximum number of SKBs to try to free per xmit packet. */
#define MAX_OUT_QUEUE_DEPTH

#define FAU_TOTAL_TX_TO_CLEAN
#define FAU_NUM_PACKET_BUFFERS_TO_FREE

#define TOTAL_NUMBER_OF_PORTS

#endif /* __ETHERNET_DEFINES_H__ */