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_WB_ON_ITR 17 * - VIRTCHNL_VF_OFFLOAD_CRC 18 * - VIRTCHNL_VF_OFFLOAD_RX_POLLING 19 * - VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2 20 * - VIRTCHNL_VF_OFFLOAD_ENCAP 21 * - VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM 22 * - VIRTCHNL_VF_OFFLOAD_RX_ENCAP_CSUM 23 * - VIRTCHNL_VF_OFFLOAD_USO 24 */ 25 26 /* default opcodes to communicate with VF */ 27 static const u32 default_allowlist_opcodes[] = { 28 VIRTCHNL_OP_GET_VF_RESOURCES, VIRTCHNL_OP_VERSION, VIRTCHNL_OP_RESET_VF, 29 }; 30 31 /* opcodes supported after successful VIRTCHNL_OP_GET_VF_RESOURCES */ 32 static const u32 working_allowlist_opcodes[] = { 33 VIRTCHNL_OP_CONFIG_TX_QUEUE, VIRTCHNL_OP_CONFIG_RX_QUEUE, 34 VIRTCHNL_OP_CONFIG_VSI_QUEUES, VIRTCHNL_OP_CONFIG_IRQ_MAP, 35 VIRTCHNL_OP_ENABLE_QUEUES, VIRTCHNL_OP_DISABLE_QUEUES, 36 VIRTCHNL_OP_GET_STATS, VIRTCHNL_OP_EVENT, 37 }; 38 39 /* VIRTCHNL_VF_OFFLOAD_L2 */ 40 static const u32 l2_allowlist_opcodes[] = { 41 VIRTCHNL_OP_ADD_ETH_ADDR, VIRTCHNL_OP_DEL_ETH_ADDR, 42 VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE, 43 }; 44 45 /* VIRTCHNL_VF_OFFLOAD_REQ_QUEUES */ 46 static const u32 req_queues_allowlist_opcodes[] = { 47 VIRTCHNL_OP_REQUEST_QUEUES, 48 }; 49 50 /* VIRTCHNL_VF_OFFLOAD_VLAN */ 51 static const u32 vlan_allowlist_opcodes[] = { 52 VIRTCHNL_OP_ADD_VLAN, VIRTCHNL_OP_DEL_VLAN, 53 VIRTCHNL_OP_ENABLE_VLAN_STRIPPING, VIRTCHNL_OP_DISABLE_VLAN_STRIPPING, 54 }; 55 56 /* VIRTCHNL_VF_OFFLOAD_VLAN_V2 */ 57 static const u32 vlan_v2_allowlist_opcodes[] = { 58 VIRTCHNL_OP_GET_OFFLOAD_VLAN_V2_CAPS, VIRTCHNL_OP_ADD_VLAN_V2, 59 VIRTCHNL_OP_DEL_VLAN_V2, VIRTCHNL_OP_ENABLE_VLAN_STRIPPING_V2, 60 VIRTCHNL_OP_DISABLE_VLAN_STRIPPING_V2, 61 VIRTCHNL_OP_ENABLE_VLAN_INSERTION_V2, 62 VIRTCHNL_OP_DISABLE_VLAN_INSERTION_V2, 63 }; 64 65 /* VIRTCHNL_VF_OFFLOAD_RSS_PF */ 66 static const u32 rss_pf_allowlist_opcodes[] = { 67 VIRTCHNL_OP_CONFIG_RSS_KEY, VIRTCHNL_OP_CONFIG_RSS_LUT, 68 VIRTCHNL_OP_GET_RSS_HENA_CAPS, VIRTCHNL_OP_SET_RSS_HENA, 69 VIRTCHNL_OP_CONFIG_RSS_HFUNC, 70 }; 71 72 /* VIRTCHNL_VF_OFFLOAD_RX_FLEX_DESC */ 73 static const u32 rx_flex_desc_allowlist_opcodes[] = { 74 VIRTCHNL_OP_GET_SUPPORTED_RXDIDS, 75 }; 76 77 /* VIRTCHNL_VF_OFFLOAD_ADV_RSS_PF */ 78 static const u32 adv_rss_pf_allowlist_opcodes[] = { 79 VIRTCHNL_OP_ADD_RSS_CFG, VIRTCHNL_OP_DEL_RSS_CFG, 80 }; 81 82 /* VIRTCHNL_VF_OFFLOAD_FDIR_PF */ 83 static const u32 fdir_pf_allowlist_opcodes[] = { 84 VIRTCHNL_OP_ADD_FDIR_FILTER, VIRTCHNL_OP_DEL_FDIR_FILTER, 85 }; 86 87 static const u32 tc_allowlist_opcodes[] = { 88 VIRTCHNL_OP_GET_QOS_CAPS, VIRTCHNL_OP_CONFIG_QUEUE_BW, 89 VIRTCHNL_OP_CONFIG_QUANTA, 90 }; 91 92 struct allowlist_opcode_info { 93 const u32 *opcodes; 94 size_t size; 95 }; 96 97 #define BIT_INDEX(caps) (HWEIGHT((caps) - 1)) 98 #define ALLOW_ITEM(caps, list) \ 99 [BIT_INDEX(caps)] = { \ 100 .opcodes = list, \ 101 .size = ARRAY_SIZE(list) \ 102 } 103 static const struct allowlist_opcode_info allowlist_opcodes[] = { 104 ALLOW_ITEM(VIRTCHNL_VF_OFFLOAD_L2, l2_allowlist_opcodes), 105 ALLOW_ITEM(VIRTCHNL_VF_OFFLOAD_REQ_QUEUES, req_queues_allowlist_opcodes), 106 ALLOW_ITEM(VIRTCHNL_VF_OFFLOAD_VLAN, vlan_allowlist_opcodes), 107 ALLOW_ITEM(VIRTCHNL_VF_OFFLOAD_RSS_PF, rss_pf_allowlist_opcodes), 108 ALLOW_ITEM(VIRTCHNL_VF_OFFLOAD_RX_FLEX_DESC, rx_flex_desc_allowlist_opcodes), 109 ALLOW_ITEM(VIRTCHNL_VF_OFFLOAD_ADV_RSS_PF, adv_rss_pf_allowlist_opcodes), 110 ALLOW_ITEM(VIRTCHNL_VF_OFFLOAD_FDIR_PF, fdir_pf_allowlist_opcodes), 111 ALLOW_ITEM(VIRTCHNL_VF_OFFLOAD_VLAN_V2, vlan_v2_allowlist_opcodes), 112 ALLOW_ITEM(VIRTCHNL_VF_OFFLOAD_QOS, tc_allowlist_opcodes), 113 }; 114 115 /** 116 * ice_vc_is_opcode_allowed - check if this opcode is allowed on this VF 117 * @vf: pointer to VF structure 118 * @opcode: virtchnl opcode 119 * 120 * Return true if message is allowed on this VF 121 */ 122 bool ice_vc_is_opcode_allowed(struct ice_vf *vf, u32 opcode) 123 { 124 if (opcode >= VIRTCHNL_OP_MAX) 125 return false; 126 127 return test_bit(opcode, vf->opcodes_allowlist); 128 } 129 130 /** 131 * ice_vc_allowlist_opcodes - allowlist selected opcodes 132 * @vf: pointer to VF structure 133 * @opcodes: array of opocodes to allowlist 134 * @size: size of opcodes array 135 * 136 * Function should be called to allowlist opcodes on VF. 137 */ 138 static void 139 ice_vc_allowlist_opcodes(struct ice_vf *vf, const u32 *opcodes, size_t size) 140 { 141 unsigned int i; 142 143 for (i = 0; i < size; i++) 144 set_bit(opcodes[i], vf->opcodes_allowlist); 145 } 146 147 /** 148 * ice_vc_clear_allowlist - clear all allowlist opcodes 149 * @vf: pointer to VF structure 150 */ 151 static void ice_vc_clear_allowlist(struct ice_vf *vf) 152 { 153 bitmap_zero(vf->opcodes_allowlist, VIRTCHNL_OP_MAX); 154 } 155 156 /** 157 * ice_vc_set_default_allowlist - allowlist default opcodes for VF 158 * @vf: pointer to VF structure 159 */ 160 void ice_vc_set_default_allowlist(struct ice_vf *vf) 161 { 162 ice_vc_clear_allowlist(vf); 163 ice_vc_allowlist_opcodes(vf, default_allowlist_opcodes, 164 ARRAY_SIZE(default_allowlist_opcodes)); 165 } 166 167 /** 168 * ice_vc_set_working_allowlist - allowlist opcodes needed to by VF to work 169 * @vf: pointer to VF structure 170 * 171 * allowlist opcodes that aren't associated with specific caps, but 172 * are needed by VF to work. 173 */ 174 void ice_vc_set_working_allowlist(struct ice_vf *vf) 175 { 176 ice_vc_allowlist_opcodes(vf, working_allowlist_opcodes, 177 ARRAY_SIZE(working_allowlist_opcodes)); 178 } 179 180 /** 181 * ice_vc_set_caps_allowlist - allowlist VF opcodes according caps 182 * @vf: pointer to VF structure 183 */ 184 void ice_vc_set_caps_allowlist(struct ice_vf *vf) 185 { 186 unsigned long caps = vf->driver_caps; 187 unsigned int i; 188 189 for_each_set_bit(i, &caps, ARRAY_SIZE(allowlist_opcodes)) 190 ice_vc_allowlist_opcodes(vf, allowlist_opcodes[i].opcodes, 191 allowlist_opcodes[i].size); 192 } 193