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 */ 27static 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 */ 32static 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 */ 40static 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 */ 46static const u32 req_queues_allowlist_opcodes[] = { 47 VIRTCHNL_OP_REQUEST_QUEUES, 48}; 49 50/* VIRTCHNL_VF_OFFLOAD_VLAN */ 51static 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 */ 57static 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 */ 66static 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 */ 73static const u32 rx_flex_desc_allowlist_opcodes[] = { 74 VIRTCHNL_OP_GET_SUPPORTED_RXDIDS, 75}; 76 77/* VIRTCHNL_VF_OFFLOAD_ADV_RSS_PF */ 78static 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 */ 83static const u32 fdir_pf_allowlist_opcodes[] = { 84 VIRTCHNL_OP_ADD_FDIR_FILTER, VIRTCHNL_OP_DEL_FDIR_FILTER, 85}; 86 87struct allowlist_opcode_info { 88 const u32 *opcodes; 89 size_t size; 90}; 91 92#define BIT_INDEX(caps) (HWEIGHT((caps) - 1)) 93#define ALLOW_ITEM(caps, list) \ 94 [BIT_INDEX(caps)] = { \ 95 .opcodes = list, \ 96 .size = ARRAY_SIZE(list) \ 97 } 98static const struct allowlist_opcode_info allowlist_opcodes[] = { 99 ALLOW_ITEM(VIRTCHNL_VF_OFFLOAD_L2, l2_allowlist_opcodes), 100 ALLOW_ITEM(VIRTCHNL_VF_OFFLOAD_REQ_QUEUES, req_queues_allowlist_opcodes), 101 ALLOW_ITEM(VIRTCHNL_VF_OFFLOAD_VLAN, vlan_allowlist_opcodes), 102 ALLOW_ITEM(VIRTCHNL_VF_OFFLOAD_RSS_PF, rss_pf_allowlist_opcodes), 103 ALLOW_ITEM(VIRTCHNL_VF_OFFLOAD_RX_FLEX_DESC, rx_flex_desc_allowlist_opcodes), 104 ALLOW_ITEM(VIRTCHNL_VF_OFFLOAD_ADV_RSS_PF, adv_rss_pf_allowlist_opcodes), 105 ALLOW_ITEM(VIRTCHNL_VF_OFFLOAD_FDIR_PF, fdir_pf_allowlist_opcodes), 106 ALLOW_ITEM(VIRTCHNL_VF_OFFLOAD_VLAN_V2, vlan_v2_allowlist_opcodes), 107}; 108 109/** 110 * ice_vc_is_opcode_allowed - check if this opcode is allowed on this VF 111 * @vf: pointer to VF structure 112 * @opcode: virtchnl opcode 113 * 114 * Return true if message is allowed on this VF 115 */ 116bool ice_vc_is_opcode_allowed(struct ice_vf *vf, u32 opcode) 117{ 118 if (opcode >= VIRTCHNL_OP_MAX) 119 return false; 120 121 return test_bit(opcode, vf->opcodes_allowlist); 122} 123 124/** 125 * ice_vc_allowlist_opcodes - allowlist selected opcodes 126 * @vf: pointer to VF structure 127 * @opcodes: array of opocodes to allowlist 128 * @size: size of opcodes array 129 * 130 * Function should be called to allowlist opcodes on VF. 131 */ 132static void 133ice_vc_allowlist_opcodes(struct ice_vf *vf, const u32 *opcodes, size_t size) 134{ 135 unsigned int i; 136 137 for (i = 0; i < size; i++) 138 set_bit(opcodes[i], vf->opcodes_allowlist); 139} 140 141/** 142 * ice_vc_clear_allowlist - clear all allowlist opcodes 143 * @vf: pointer to VF structure 144 */ 145static void ice_vc_clear_allowlist(struct ice_vf *vf) 146{ 147 bitmap_zero(vf->opcodes_allowlist, VIRTCHNL_OP_MAX); 148} 149 150/** 151 * ice_vc_set_default_allowlist - allowlist default opcodes for VF 152 * @vf: pointer to VF structure 153 */ 154void ice_vc_set_default_allowlist(struct ice_vf *vf) 155{ 156 ice_vc_clear_allowlist(vf); 157 ice_vc_allowlist_opcodes(vf, default_allowlist_opcodes, 158 ARRAY_SIZE(default_allowlist_opcodes)); 159} 160 161/** 162 * ice_vc_set_working_allowlist - allowlist opcodes needed to by VF to work 163 * @vf: pointer to VF structure 164 * 165 * allowlist opcodes that aren't associated with specific caps, but 166 * are needed by VF to work. 167 */ 168void ice_vc_set_working_allowlist(struct ice_vf *vf) 169{ 170 ice_vc_allowlist_opcodes(vf, working_allowlist_opcodes, 171 ARRAY_SIZE(working_allowlist_opcodes)); 172} 173 174/** 175 * ice_vc_set_caps_allowlist - allowlist VF opcodes according caps 176 * @vf: pointer to VF structure 177 */ 178void ice_vc_set_caps_allowlist(struct ice_vf *vf) 179{ 180 unsigned long caps = vf->driver_caps; 181 unsigned int i; 182 183 for_each_set_bit(i, &caps, ARRAY_SIZE(allowlist_opcodes)) 184 ice_vc_allowlist_opcodes(vf, allowlist_opcodes[i].opcodes, 185 allowlist_opcodes[i].size); 186} 187