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__ */ |
41 | |