1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright (C) 2021, Intel Corporation. */ 3 4 #include "ice_virtchnl_allowlist.h" 5 6 /* Purpose of this file is to share functionality to allowlist or denylist 7 * opcodes used in PF <-> VF communication. Group of opcodes: 8 * - default -> should be always allowed after creating VF, 9 * default_allowlist_opcodes 10 * - opcodes needed by VF to work correctly, but not associated with caps -> 11 * should be allowed after successful VF resources allocation, 12 * working_allowlist_opcodes 13 * - opcodes needed by VF when caps are activated 14 * 15 * Caps that don't use new opcodes (no opcodes should be allowed): 16 * - VIRTCHNL_VF_OFFLOAD_RSS_AQ 17 * - VIRTCHNL_VF_OFFLOAD_RSS_REG 18 * - VIRTCHNL_VF_OFFLOAD_WB_ON_ITR 19 * - VIRTCHNL_VF_OFFLOAD_CRC 20 * - VIRTCHNL_VF_OFFLOAD_RX_POLLING 21 * - VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2 22 * - VIRTCHNL_VF_OFFLOAD_ENCAP 23 * - VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM 24 * - VIRTCHNL_VF_OFFLOAD_RX_ENCAP_CSUM 25 * - VIRTCHNL_VF_OFFLOAD_USO 26 */ 27 28 /* default opcodes to communicate with VF */ 29 static const u32 default_allowlist_opcodes[] = { 30 VIRTCHNL_OP_GET_VF_RESOURCES, VIRTCHNL_OP_VERSION, VIRTCHNL_OP_RESET_VF, 31 }; 32 33 /* opcodes supported after successful VIRTCHNL_OP_GET_VF_RESOURCES */ 34 static const u32 working_allowlist_opcodes[] = { 35 VIRTCHNL_OP_CONFIG_TX_QUEUE, VIRTCHNL_OP_CONFIG_RX_QUEUE, 36 VIRTCHNL_OP_CONFIG_VSI_QUEUES, VIRTCHNL_OP_CONFIG_IRQ_MAP, 37 VIRTCHNL_OP_ENABLE_QUEUES, VIRTCHNL_OP_DISABLE_QUEUES, 38 VIRTCHNL_OP_GET_STATS, VIRTCHNL_OP_EVENT, 39 }; 40 41 /* VIRTCHNL_VF_OFFLOAD_L2 */ 42 static const u32 l2_allowlist_opcodes[] = { 43 VIRTCHNL_OP_ADD_ETH_ADDR, VIRTCHNL_OP_DEL_ETH_ADDR, 44 VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE, 45 }; 46 47 /* VIRTCHNL_VF_OFFLOAD_REQ_QUEUES */ 48 static const u32 req_queues_allowlist_opcodes[] = { 49 VIRTCHNL_OP_REQUEST_QUEUES, 50 }; 51 52 /* VIRTCHNL_VF_OFFLOAD_VLAN */ 53 static const u32 vlan_allowlist_opcodes[] = { 54 VIRTCHNL_OP_ADD_VLAN, VIRTCHNL_OP_DEL_VLAN, 55 VIRTCHNL_OP_ENABLE_VLAN_STRIPPING, VIRTCHNL_OP_DISABLE_VLAN_STRIPPING, 56 }; 57 58 /* VIRTCHNL_VF_OFFLOAD_VLAN_V2 */ 59 static const u32 vlan_v2_allowlist_opcodes[] = { 60 VIRTCHNL_OP_GET_OFFLOAD_VLAN_V2_CAPS, VIRTCHNL_OP_ADD_VLAN_V2, 61 VIRTCHNL_OP_DEL_VLAN_V2, VIRTCHNL_OP_ENABLE_VLAN_STRIPPING_V2, 62 VIRTCHNL_OP_DISABLE_VLAN_STRIPPING_V2, 63 VIRTCHNL_OP_ENABLE_VLAN_INSERTION_V2, 64 VIRTCHNL_OP_DISABLE_VLAN_INSERTION_V2, 65 }; 66 67 /* VIRTCHNL_VF_OFFLOAD_RSS_PF */ 68 static const u32 rss_pf_allowlist_opcodes[] = { 69 VIRTCHNL_OP_CONFIG_RSS_KEY, VIRTCHNL_OP_CONFIG_RSS_LUT, 70 VIRTCHNL_OP_GET_RSS_HENA_CAPS, VIRTCHNL_OP_SET_RSS_HENA, 71 VIRTCHNL_OP_CONFIG_RSS_HFUNC, 72 }; 73 74 /* VIRTCHNL_VF_OFFLOAD_RX_FLEX_DESC */ 75 static const u32 rx_flex_desc_allowlist_opcodes[] = { 76 VIRTCHNL_OP_GET_SUPPORTED_RXDIDS, 77 }; 78 79 /* VIRTCHNL_VF_OFFLOAD_ADV_RSS_PF */ 80 static const u32 adv_rss_pf_allowlist_opcodes[] = { 81 VIRTCHNL_OP_ADD_RSS_CFG, VIRTCHNL_OP_DEL_RSS_CFG, 82 }; 83 84 /* VIRTCHNL_VF_OFFLOAD_FDIR_PF */ 85 static const u32 fdir_pf_allowlist_opcodes[] = { 86 VIRTCHNL_OP_ADD_FDIR_FILTER, VIRTCHNL_OP_DEL_FDIR_FILTER, 87 }; 88 89 struct allowlist_opcode_info { 90 const u32 *opcodes; 91 size_t size; 92 }; 93 94 #define BIT_INDEX(caps) (HWEIGHT((caps) - 1)) 95 #define ALLOW_ITEM(caps, list) \ 96 [BIT_INDEX(caps)] = { \ 97 .opcodes = list, \ 98 .size = ARRAY_SIZE(list) \ 99 } 100 static const struct allowlist_opcode_info allowlist_opcodes[] = { 101 ALLOW_ITEM(VIRTCHNL_VF_OFFLOAD_L2, l2_allowlist_opcodes), 102 ALLOW_ITEM(VIRTCHNL_VF_OFFLOAD_REQ_QUEUES, req_queues_allowlist_opcodes), 103 ALLOW_ITEM(VIRTCHNL_VF_OFFLOAD_VLAN, vlan_allowlist_opcodes), 104 ALLOW_ITEM(VIRTCHNL_VF_OFFLOAD_RSS_PF, rss_pf_allowlist_opcodes), 105 ALLOW_ITEM(VIRTCHNL_VF_OFFLOAD_RX_FLEX_DESC, rx_flex_desc_allowlist_opcodes), 106 ALLOW_ITEM(VIRTCHNL_VF_OFFLOAD_ADV_RSS_PF, adv_rss_pf_allowlist_opcodes), 107 ALLOW_ITEM(VIRTCHNL_VF_OFFLOAD_FDIR_PF, fdir_pf_allowlist_opcodes), 108 ALLOW_ITEM(VIRTCHNL_VF_OFFLOAD_VLAN_V2, vlan_v2_allowlist_opcodes), 109 }; 110 111 /** 112 * ice_vc_is_opcode_allowed - check if this opcode is allowed on this VF 113 * @vf: pointer to VF structure 114 * @opcode: virtchnl opcode 115 * 116 * Return true if message is allowed on this VF 117 */ 118 bool ice_vc_is_opcode_allowed(struct ice_vf *vf, u32 opcode) 119 { 120 if (opcode >= VIRTCHNL_OP_MAX) 121 return false; 122 123 return test_bit(opcode, vf->opcodes_allowlist); 124 } 125 126 /** 127 * ice_vc_allowlist_opcodes - allowlist selected opcodes 128 * @vf: pointer to VF structure 129 * @opcodes: array of opocodes to allowlist 130 * @size: size of opcodes array 131 * 132 * Function should be called to allowlist opcodes on VF. 133 */ 134 static void 135 ice_vc_allowlist_opcodes(struct ice_vf *vf, const u32 *opcodes, size_t size) 136 { 137 unsigned int i; 138 139 for (i = 0; i < size; i++) 140 set_bit(opcodes[i], vf->opcodes_allowlist); 141 } 142 143 /** 144 * ice_vc_clear_allowlist - clear all allowlist opcodes 145 * @vf: pointer to VF structure 146 */ 147 static void ice_vc_clear_allowlist(struct ice_vf *vf) 148 { 149 bitmap_zero(vf->opcodes_allowlist, VIRTCHNL_OP_MAX); 150 } 151 152 /** 153 * ice_vc_set_default_allowlist - allowlist default opcodes for VF 154 * @vf: pointer to VF structure 155 */ 156 void ice_vc_set_default_allowlist(struct ice_vf *vf) 157 { 158 ice_vc_clear_allowlist(vf); 159 ice_vc_allowlist_opcodes(vf, default_allowlist_opcodes, 160 ARRAY_SIZE(default_allowlist_opcodes)); 161 } 162 163 /** 164 * ice_vc_set_working_allowlist - allowlist opcodes needed to by VF to work 165 * @vf: pointer to VF structure 166 * 167 * allowlist opcodes that aren't associated with specific caps, but 168 * are needed by VF to work. 169 */ 170 void ice_vc_set_working_allowlist(struct ice_vf *vf) 171 { 172 ice_vc_allowlist_opcodes(vf, working_allowlist_opcodes, 173 ARRAY_SIZE(working_allowlist_opcodes)); 174 } 175 176 /** 177 * ice_vc_set_caps_allowlist - allowlist VF opcodes according caps 178 * @vf: pointer to VF structure 179 */ 180 void ice_vc_set_caps_allowlist(struct ice_vf *vf) 181 { 182 unsigned long caps = vf->driver_caps; 183 unsigned int i; 184 185 for_each_set_bit(i, &caps, ARRAY_SIZE(allowlist_opcodes)) 186 ice_vc_allowlist_opcodes(vf, allowlist_opcodes[i].opcodes, 187 allowlist_opcodes[i].size); 188 } 189