developer | 12ea714 | 2024-03-28 15:18:08 +0800 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
| 2 | /* |
| 3 | * Copyright (C) 2023 MediaTek Inc. |
| 4 | * |
| 5 | * Author: Chris.Chou <chris.chou@mediatek.com> |
| 6 | * Ren-Ting Wang <ren-ting.wang@mediatek.com> |
| 7 | * Peter Wang <peterjy.wang@mediatek.com> |
| 8 | */ |
| 9 | |
| 10 | #include <linux/bitops.h> |
| 11 | |
| 12 | #include <mtk_eth_soc.h> |
| 13 | #include <mtk_hnat/hnat.h> |
| 14 | #include <mtk_hnat/nf_hnat_mtk.h> |
| 15 | |
| 16 | #include <pce/cdrt.h> |
| 17 | #include <pce/cls.h> |
| 18 | #include <pce/netsys.h> |
| 19 | |
| 20 | #include "crypto-eip/crypto-eip.h" |
| 21 | #include "crypto-eip/ddk-wrapper.h" |
| 22 | #include "crypto-eip/internal.h" |
| 23 | |
| 24 | |
| 25 | struct mtk_CDRT_DTLS_entry CDRT_DTLS_params; |
| 26 | struct DTLSResourceMgmt *DTLSResourceTable[CAPWAP_MAX_TUNNEL_NUM]; |
| 27 | |
| 28 | static int |
| 29 | mtk_setup_cdrt_dtls(struct cdrt_entry *cdrt_entry_p, enum cdrt_type type) |
| 30 | { |
| 31 | struct cdrt_desc *cdesc = &cdrt_entry_p->desc; |
| 32 | |
| 33 | cdesc->desc1.dtls.pkt_len = 0; |
| 34 | cdesc->desc1.dtls.rsv1 = 0; |
| 35 | cdesc->desc1.dtls.capwap = 1; |
| 36 | if (type == CDRT_ENCRYPT) |
| 37 | cdesc->desc1.dtls.dir = 0; |
| 38 | else |
| 39 | cdesc->desc1.dtls.dir = 1; |
| 40 | cdesc->desc1.dtls.content_type = 3; |
| 41 | cdesc->desc1.dtls.type = 3; |
| 42 | cdesc->desc1.aad_len = 0; |
| 43 | cdesc->desc1.rsv1 = 0; |
| 44 | cdesc->desc1.app_id = 0; |
| 45 | cdesc->desc1.token_len = 0x30; |
| 46 | cdesc->desc1.rsv2 = 0; |
| 47 | cdesc->desc1.p_tr[0] = 0xfffffffc; |
| 48 | cdesc->desc1.p_tr[1] = 0xffffffff; |
| 49 | |
| 50 | cdesc->desc2.usr = 0; |
| 51 | cdesc->desc2.rsv1 = 0; |
| 52 | cdesc->desc2.strip_pad = 1; |
| 53 | cdesc->desc2.allow_pad = 1; |
| 54 | cdesc->desc2.hw_srv = 0x28; |
| 55 | cdesc->desc2.rsv2 = 0; |
| 56 | cdesc->desc2.flow_lookup = 0; |
| 57 | cdesc->desc2.rsv3 = 0; |
| 58 | cdesc->desc2.ofs = 14; |
| 59 | cdesc->desc2.next_hdr = 0; |
| 60 | cdesc->desc2.fl = 0; |
| 61 | cdesc->desc2.ip4_chksum = 0; |
| 62 | if (type == CDRT_ENCRYPT) |
| 63 | cdesc->desc2.l4_chksum = 1; |
| 64 | else |
| 65 | cdesc->desc2.l4_chksum = 0; |
| 66 | cdesc->desc2.parse_eth = 0; |
| 67 | cdesc->desc2.keep_outer = 0; |
| 68 | cdesc->desc2.rsv4 = 0; |
| 69 | cdesc->desc2.rsv5[0] = 0; |
| 70 | cdesc->desc2.rsv5[1] = 0; |
| 71 | |
| 72 | cdesc->desc3.option_meta[0] = 0x00000000; |
| 73 | cdesc->desc3.option_meta[1] = 0x00000000; |
| 74 | cdesc->desc3.option_meta[2] = 0x00000000; |
| 75 | cdesc->desc3.option_meta[3] = 0x00000000; |
| 76 | |
| 77 | return mtk_pce_cdrt_entry_write(cdrt_entry_p); |
| 78 | } |
| 79 | |
| 80 | |
| 81 | static int |
| 82 | mtk_add_cdrt_dtls(enum cdrt_type type) |
| 83 | { |
| 84 | int ret = 0; |
| 85 | struct cdrt_entry *cdrt_entry_p = NULL; |
| 86 | |
| 87 | cdrt_entry_p = mtk_pce_cdrt_entry_alloc(type); |
| 88 | if (cdrt_entry_p == NULL) { |
| 89 | CRYPTO_ERR("%s: mtk_pce_cdrt_entry_alloc failed!\n", __func__); |
| 90 | return 1; |
| 91 | } |
| 92 | |
| 93 | ret = mtk_setup_cdrt_dtls(cdrt_entry_p, type); |
| 94 | if (ret) |
| 95 | goto free_cdrt; |
| 96 | |
| 97 | if (type == CDRT_DECRYPT) |
| 98 | CDRT_DTLS_params.cdrt_inbound = cdrt_entry_p; |
| 99 | else |
| 100 | CDRT_DTLS_params.cdrt_outbound = cdrt_entry_p; |
| 101 | return ret; |
| 102 | |
| 103 | free_cdrt: |
| 104 | mtk_pce_cdrt_entry_free(cdrt_entry_p); |
| 105 | |
| 106 | return ret; |
| 107 | } |
| 108 | |
| 109 | |
| 110 | void |
| 111 | mtk_update_cdrt_idx(struct mtk_cdrt_idx_param *cdrt_idx_params_p) |
| 112 | { |
| 113 | cdrt_idx_params_p->cdrt_idx_inbound = CDRT_DTLS_params.cdrt_inbound->idx; |
| 114 | cdrt_idx_params_p->cdrt_idx_outbound = CDRT_DTLS_params.cdrt_outbound->idx; |
| 115 | } |
| 116 | |
| 117 | |
| 118 | void |
| 119 | mtk_dtls_capwap_init(void) |
| 120 | { |
| 121 | int i = 0; |
| 122 | // init cdrt for dtls |
| 123 | if (mtk_add_cdrt_dtls(CDRT_DECRYPT)) |
| 124 | CRYPTO_ERR("%s: CDRT DECRYPT for DTLS init failed!\n", __func__); |
| 125 | |
| 126 | if (mtk_add_cdrt_dtls(CDRT_ENCRYPT)) |
| 127 | CRYPTO_ERR("%s: CDRT ENCRYPT for DTLS init failed!\n", __func__); |
| 128 | // add hook function for tops driver |
| 129 | #if defined(CONFIG_MTK_TOPS_CAPWAP_DTLS) |
| 130 | mtk_submit_SAparam_to_eip_driver = mtk_update_dtls_param; |
| 131 | mtk_remove_SAparam_to_eip_driver = mtk_remove_dtls_param; |
| 132 | mtk_update_cdrt_idx_from_eip_driver = mtk_update_cdrt_idx; |
| 133 | #endif |
| 134 | |
| 135 | // init table as NULL |
| 136 | for (i = 0; i < CAPWAP_MAX_TUNNEL_NUM; i++) |
| 137 | DTLSResourceTable[i] = NULL; |
| 138 | } |
| 139 | |
| 140 | |
| 141 | void |
| 142 | mtk_dtls_capwap_deinit(void) |
| 143 | { |
| 144 | int i = 0; |
| 145 | // Loop and check if all SA in table are freed |
| 146 | for (i = 0; i < CAPWAP_MAX_TUNNEL_NUM; i++) { |
| 147 | if (DTLSResourceTable[i] != NULL) |
| 148 | mtk_ddk_remove_dtls_param(&DTLSResourceTable[i]); |
| 149 | } |
| 150 | |
| 151 | if (CDRT_DTLS_params.cdrt_inbound != NULL) |
| 152 | mtk_pce_cdrt_entry_free(CDRT_DTLS_params.cdrt_inbound); |
| 153 | if (CDRT_DTLS_params.cdrt_outbound != NULL) |
| 154 | mtk_pce_cdrt_entry_free(CDRT_DTLS_params.cdrt_outbound); |
| 155 | #if defined(CONFIG_MTK_TOPS_CAPWAP_DTLS) |
| 156 | mtk_update_cdrt_idx_from_eip_driver = NULL; |
| 157 | mtk_submit_SAparam_to_eip_driver = NULL; |
| 158 | mtk_remove_SAparam_to_eip_driver = NULL; |
| 159 | #endif |
| 160 | } |
| 161 | |
| 162 | void |
| 163 | mtk_update_dtls_param(struct DTLS_param *DTLSParam_p, int TnlIdx) |
| 164 | { |
| 165 | char *TestName_p; |
| 166 | |
| 167 | if (DTLSResourceTable[TnlIdx] != NULL) { |
| 168 | CRYPTO_NOTICE("tnl_idx-%d- existed, will be removed first.\n", TnlIdx); |
| 169 | mtk_ddk_remove_dtls_param(&DTLSResourceTable[TnlIdx]); |
| 170 | } |
| 171 | |
| 172 | TestName_p = "Inline DTLS-CAPWAP SA setting"; |
| 173 | |
| 174 | if (mtk_capwap_dtls_offload(false, true, true, true, false, DTLSParam_p, |
| 175 | &DTLSResourceTable[TnlIdx])) |
| 176 | CRYPTO_INFO("%s DONE\n", TestName_p); |
| 177 | else |
| 178 | CRYPTO_ERR("%s: %s FAILED\n", __func__, TestName_p); |
| 179 | } |
| 180 | |
| 181 | void mtk_remove_dtls_param(struct DTLS_param *DTLSParam_p, int TnlIdx) |
| 182 | { |
| 183 | mtk_ddk_remove_dtls_param(&DTLSResourceTable[TnlIdx]); |
| 184 | } |