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 }; 70 71 /* VIRTCHNL_VF_OFFLOAD_RX_FLEX_DESC */ 72 static const u32 rx_flex_desc_allowlist_opcodes[] = { 73 VIRTCHNL_OP_GET_SUPPORTED_RXDIDS, 74 }; 75 76 /* VIRTCHNL_VF_OFFLOAD_ADV_RSS_PF */ 77 static const u32 adv_rss_pf_allowlist_opcodes[] = { 78 VIRTCHNL_OP_ADD_RSS_CFG, VIRTCHNL_OP_DEL_RSS_CFG, 79 }; 80 81 /* VIRTCHNL_VF_OFFLOAD_FDIR_PF */ 82 static const u32 fdir_pf_allowlist_opcodes[] = { 83 VIRTCHNL_OP_ADD_FDIR_FILTER, VIRTCHNL_OP_DEL_FDIR_FILTER, 84 }; 85 86 struct allowlist_opcode_info { 87 const u32 *opcodes; 88 size_t size; 89 }; 90 91 #define BIT_INDEX(caps) (HWEIGHT((caps) - 1)) 92 #define ALLOW_ITEM(caps, list) \ 93 [BIT_INDEX(caps)] = { \ 94 .opcodes = list, \ 95 .size = ARRAY_SIZE(list) \ 96 } 97 static const struct allowlist_opcode_info allowlist_opcodes[] = { 98 ALLOW_ITEM(VIRTCHNL_VF_OFFLOAD_L2, l2_allowlist_opcodes), 99 ALLOW_ITEM(VIRTCHNL_VF_OFFLOAD_REQ_QUEUES, req_queues_allowlist_opcodes), 100 ALLOW_ITEM(VIRTCHNL_VF_OFFLOAD_VLAN, vlan_allowlist_opcodes), 101 ALLOW_ITEM(VIRTCHNL_VF_OFFLOAD_RSS_PF, rss_pf_allowlist_opcodes), 102 ALLOW_ITEM(VIRTCHNL_VF_OFFLOAD_RX_FLEX_DESC, rx_flex_desc_allowlist_opcodes), 103 ALLOW_ITEM(VIRTCHNL_VF_OFFLOAD_ADV_RSS_PF, adv_rss_pf_allowlist_opcodes), 104 ALLOW_ITEM(VIRTCHNL_VF_OFFLOAD_FDIR_PF, fdir_pf_allowlist_opcodes), 105 ALLOW_ITEM(VIRTCHNL_VF_OFFLOAD_VLAN_V2, vlan_v2_allowlist_opcodes), 106 }; 107 108 /** 109 * ice_vc_is_opcode_allowed - check if this opcode is allowed on this VF 110 * @vf: pointer to VF structure 111 * @opcode: virtchnl opcode 112 * 113 * Return true if message is allowed on this VF 114 */ 115 bool ice_vc_is_opcode_allowed(struct ice_vf *vf, u32 opcode) 116 { 117 if (opcode >= VIRTCHNL_OP_MAX) 118 return false; 119 120 return test_bit(opcode, vf->opcodes_allowlist); 121 } 122 123 /** 124 * ice_vc_allowlist_opcodes - allowlist selected opcodes 125 * @vf: pointer to VF structure 126 * @opcodes: array of opocodes to allowlist 127 * @size: size of opcodes array 128 * 129 * Function should be called to allowlist opcodes on VF. 130 */ 131 static void 132 ice_vc_allowlist_opcodes(struct ice_vf *vf, const u32 *opcodes, size_t size) 133 { 134 unsigned int i; 135 136 for (i = 0; i < size; i++) 137 set_bit(opcodes[i], vf->opcodes_allowlist); 138 } 139 140 /** 141 * ice_vc_clear_allowlist - clear all allowlist opcodes 142 * @vf: pointer to VF structure 143 */ 144 static void ice_vc_clear_allowlist(struct ice_vf *vf) 145 { 146 bitmap_zero(vf->opcodes_allowlist, VIRTCHNL_OP_MAX); 147 } 148 149 /** 150 * ice_vc_set_default_allowlist - allowlist default opcodes for VF 151 * @vf: pointer to VF structure 152 */ 153 void ice_vc_set_default_allowlist(struct ice_vf *vf) 154 { 155 ice_vc_clear_allowlist(vf); 156 ice_vc_allowlist_opcodes(vf, default_allowlist_opcodes, 157 ARRAY_SIZE(default_allowlist_opcodes)); 158 } 159 160 /** 161 * ice_vc_set_working_allowlist - allowlist opcodes needed to by VF to work 162 * @vf: pointer to VF structure 163 * 164 * allowlist opcodes that aren't associated with specific caps, but 165 * are needed by VF to work. 166 */ 167 void ice_vc_set_working_allowlist(struct ice_vf *vf) 168 { 169 ice_vc_allowlist_opcodes(vf, working_allowlist_opcodes, 170 ARRAY_SIZE(working_allowlist_opcodes)); 171 } 172 173 /** 174 * ice_vc_set_caps_allowlist - allowlist VF opcodes according caps 175 * @vf: pointer to VF structure 176 */ 177 void ice_vc_set_caps_allowlist(struct ice_vf *vf) 178 { 179 unsigned long caps = vf->driver_caps; 180 unsigned int i; 181 182 for_each_set_bit(i, &caps, ARRAY_SIZE(allowlist_opcodes)) 183 ice_vc_allowlist_opcodes(vf, allowlist_opcodes[i].opcodes, 184 allowlist_opcodes[i].size); 185 } 186