cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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ethernet-defines.h (1409B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2/*
      3 * This file is based on code from OCTEON SDK by Cavium Networks.
      4 *
      5 * Copyright (c) 2003-2007 Cavium Networks
      6 */
      7
      8/*
      9 * A few defines are used to control the operation of this driver:
     10 *  USE_ASYNC_IOBDMA
     11 *      Use asynchronous IO access to hardware. This uses Octeon's asynchronous
     12 *      IOBDMAs to issue IO accesses without stalling. Set this to zero
     13 *      to disable this. Note that IOBDMAs require CVMSEG.
     14 *  REUSE_SKBUFFS_WITHOUT_FREE
     15 *      Allows the TX path to free an skbuff into the FPA hardware pool. This
     16 *      can significantly improve performance for forwarding and bridging, but
     17 *      may be somewhat dangerous. Checks are made, but if any buffer is reused
     18 *      without the proper Linux cleanup, the networking stack may have very
     19 *      bizarre bugs.
     20 */
     21#ifndef __ETHERNET_DEFINES_H__
     22#define __ETHERNET_DEFINES_H__
     23
     24#ifdef CONFIG_NETFILTER
     25#define REUSE_SKBUFFS_WITHOUT_FREE	0
     26#else
     27#define REUSE_SKBUFFS_WITHOUT_FREE	1
     28#endif
     29
     30#define USE_ASYNC_IOBDMA		(CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE > 0)
     31
     32/* Maximum number of SKBs to try to free per xmit packet. */
     33#define MAX_OUT_QUEUE_DEPTH		1000
     34
     35#define FAU_TOTAL_TX_TO_CLEAN (CVMX_FAU_REG_END - sizeof(u32))
     36#define FAU_NUM_PACKET_BUFFERS_TO_FREE (FAU_TOTAL_TX_TO_CLEAN - sizeof(u32))
     37
     38#define TOTAL_NUMBER_OF_PORTS		(CVMX_PIP_NUM_INPUT_PORTS + 1)
     39
     40#endif /* __ETHERNET_DEFINES_H__ */