| Ratheesh Kannoth | 24fb1db | 2021-10-20 07:28:06 +0530 | [diff] [blame] | 1 | /* |
| 2 | * sfe_flow_cookie.h |
| 3 | * Flow cookie related callbacks. |
| 4 | * |
| 5 | * Copyright (c) 2013-2016, 2019-2020, The Linux Foundation. All rights reserved. |
| 6 | * Copyright (c) 2021 Qualcomm Innovation Center, Inc. All rights reserved. |
| 7 | * |
| 8 | * Permission to use, copy, modify, and/or distribute this software for any |
| 9 | * purpose with or without fee is hereby granted, provided that the above |
| 10 | * copyright notice and this permission notice appear in all copies. |
| 11 | * |
| 12 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 13 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 14 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 15 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 16 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 17 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 18 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 19 | */ |
| 20 | |
| 21 | #ifdef CONFIG_NF_FLOW_COOKIE |
| 22 | #define SFE_FLOW_COOKIE_SIZE 2048 |
| 23 | #define SFE_FLOW_COOKIE_MASK 0x7ff |
| 24 | |
| 25 | struct sfe_ipv4_connection_match; |
| 26 | struct sfe_ipv6_connection_match; |
| 27 | |
| 28 | struct sfe_flow_cookie_entry { |
| 29 | struct sfe_ipv4_connection_match *match; |
| 30 | unsigned long last_clean_time; |
| 31 | }; |
| 32 | |
| 33 | struct sfe_ipv6_flow_cookie_entry { |
| 34 | struct sfe_ipv6_connection_match *match; |
| 35 | unsigned long last_clean_time; |
| 36 | }; |
| 37 | |
| 38 | typedef int (*flow_cookie_set_func_t)(u32 protocol, __be32 src_ip, __be16 src_port, |
| 39 | __be32 dst_ip, __be16 dst_port, u16 flow_cookie); |
| 40 | /* |
| 41 | * sfe_register_flow_cookie_cb |
| 42 | * register a function in SFE to let SFE use this function to configure flow cookie for a flow |
| 43 | * |
| 44 | * Hardware driver which support flow cookie should register a callback function in SFE. Then SFE |
| 45 | * can use this function to configure flow cookie for a flow. |
| 46 | * return: 0, success; !=0, fail |
| 47 | */ |
| 48 | int sfe_register_flow_cookie_cb(flow_cookie_set_func_t cb); |
| 49 | |
| 50 | /* |
| 51 | * sfe_unregister_flow_cookie_cb |
| 52 | * unregister function which is used to configure flow cookie for a flow |
| 53 | * |
| 54 | * return: 0, success; !=0, fail |
| 55 | */ |
| 56 | int sfe_unregister_flow_cookie_cb(flow_cookie_set_func_t cb); |
| 57 | |
| 58 | typedef int (*sfe_ipv6_flow_cookie_set_func_t)(u32 protocol, __be32 src_ip[4], __be16 src_port, |
| 59 | __be32 dst_ip[4], __be16 dst_port, u16 flow_cookie); |
| 60 | |
| 61 | /* |
| 62 | * sfe_ipv6_register_flow_cookie_cb |
| 63 | * register a function in SFE to let SFE use this function to configure flow cookie for a flow |
| 64 | * |
| 65 | * Hardware driver which support flow cookie should register a callback function in SFE. Then SFE |
| 66 | * can use this function to configure flow cookie for a flow. |
| 67 | * return: 0, success; !=0, fail |
| 68 | */ |
| 69 | int sfe_ipv6_register_flow_cookie_cb(sfe_ipv6_flow_cookie_set_func_t cb); |
| 70 | |
| 71 | /* |
| 72 | * sfe_ipv6_unregister_flow_cookie_cb |
| 73 | * unregister function which is used to configure flow cookie for a flow |
| 74 | * |
| 75 | * return: 0, success; !=0, fail |
| 76 | */ |
| 77 | int sfe_ipv6_unregister_flow_cookie_cb(sfe_ipv6_flow_cookie_set_func_t cb); |
| 78 | |
| 79 | #endif /*CONFIG_NF_FLOW_COOKIE*/ |