| /* 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 0 |
| #else |
| #define REUSE_SKBUFFS_WITHOUT_FREE 1 |
| #endif |
| |
| #define USE_ASYNC_IOBDMA (CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE > 0) |
| |
| /* Maximum number of SKBs to try to free per xmit packet. */ |
| #define MAX_OUT_QUEUE_DEPTH 1000 |
| |
| #define FAU_TOTAL_TX_TO_CLEAN (CVMX_FAU_REG_END - sizeof(u32)) |
| #define FAU_NUM_PACKET_BUFFERS_TO_FREE (FAU_TOTAL_TX_TO_CLEAN - sizeof(u32)) |
| |
| #define TOTAL_NUMBER_OF_PORTS (CVMX_PIP_NUM_INPUT_PORTS + 1) |
| |
| #endif /* __ETHERNET_DEFINES_H__ */ |
