1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2014, 2021 Intel Corporation 4 * Copyright (C) 2013-2014 Intel Mobile Communications GmbH 5 * Copyright (C) 2015 Intel Deutschland GmbH 6 */ 7 #include <net/ipv6.h> 8 #include <net/addrconf.h> 9 #include <linux/bitops.h> 10 #include "mvm.h" 11 12 void iwl_mvm_set_wowlan_qos_seq(struct iwl_mvm_sta *mvm_ap_sta, 13 struct iwl_wowlan_config_cmd *cmd) 14 { 15 int i; 16 17 /* 18 * For QoS counters, we store the one to use next, so subtract 0x10 19 * since the uCode will add 0x10 *before* using the value while we 20 * increment after using the value (i.e. store the next value to use). 21 */ 22 for (i = 0; i < IWL_MAX_TID_COUNT; i++) { 23 u16 seq = mvm_ap_sta->tid_data[i].seq_number; 24 seq -= 0x10; 25 cmd->qos_seq[i] = cpu_to_le16(seq); 26 } 27 } 28 29 int iwl_mvm_send_proto_offload(struct iwl_mvm *mvm, 30 struct ieee80211_vif *vif, 31 bool disable_offloading, 32 bool offload_ns, 33 u32 cmd_flags) 34 { 35 union { 36 struct iwl_proto_offload_cmd_v1 v1; 37 struct iwl_proto_offload_cmd_v2 v2; 38 struct iwl_proto_offload_cmd_v3_small v3s; 39 struct iwl_proto_offload_cmd_v4 v4; 40 } cmd = {}; 41 struct iwl_host_cmd hcmd = { 42 .id = PROT_OFFLOAD_CONFIG_CMD, 43 .flags = cmd_flags, 44 .data[0] = &cmd, 45 .dataflags[0] = IWL_HCMD_DFL_DUP, 46 }; 47 struct iwl_proto_offload_cmd_common *common; 48 u32 enabled = 0, size; 49 u32 capa_flags = mvm->fw->ucode_capa.flags; 50 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, 51 PROT_OFFLOAD_CONFIG_CMD, 0); 52 53 #if IS_ENABLED(CONFIG_IPV6) 54 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 55 int i; 56 /* 57 * Skip tentative address when ns offload is enabled to avoid 58 * violating RFC4862. 59 * Keep tentative address when ns offload is disabled so the NS packets 60 * will not be filtered out and will wake up the host. 61 */ 62 bool skip_tentative = offload_ns; 63 64 if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL || 65 capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_LARGE) { 66 struct iwl_ns_config *nsc; 67 struct iwl_targ_addr *addrs; 68 int n_nsc, n_addrs; 69 int c; 70 int num_skipped = 0; 71 72 if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL) { 73 nsc = cmd.v3s.ns_config; 74 n_nsc = IWL_PROTO_OFFLOAD_NUM_NS_CONFIG_V3S; 75 addrs = cmd.v3s.targ_addrs; 76 n_addrs = IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V3S; 77 } else { 78 nsc = cmd.v4.ns_config; 79 n_nsc = IWL_PROTO_OFFLOAD_NUM_NS_CONFIG_V3L; 80 addrs = cmd.v4.targ_addrs; 81 n_addrs = IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V3L; 82 } 83 84 /* 85 * For each address we have (and that will fit) fill a target 86 * address struct and combine for NS offload structs with the 87 * solicited node addresses. 88 */ 89 for (i = 0, c = 0; 90 i < mvmvif->num_target_ipv6_addrs && 91 i < n_addrs && c < n_nsc; i++) { 92 struct in6_addr solicited_addr; 93 int j; 94 95 if (skip_tentative && 96 test_bit(i, mvmvif->tentative_addrs)) { 97 num_skipped++; 98 continue; 99 } 100 101 addrconf_addr_solict_mult(&mvmvif->target_ipv6_addrs[i], 102 &solicited_addr); 103 for (j = 0; j < c; j++) 104 if (ipv6_addr_cmp(&nsc[j].dest_ipv6_addr, 105 &solicited_addr) == 0) 106 break; 107 if (j == c) 108 c++; 109 addrs[i].addr = mvmvif->target_ipv6_addrs[i]; 110 addrs[i].config_num = cpu_to_le32(j); 111 nsc[j].dest_ipv6_addr = solicited_addr; 112 memcpy(nsc[j].target_mac_addr, vif->addr, ETH_ALEN); 113 } 114 115 if (mvmvif->num_target_ipv6_addrs - num_skipped) 116 enabled |= IWL_D3_PROTO_IPV6_VALID; 117 118 if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL) 119 cmd.v3s.num_valid_ipv6_addrs = 120 cpu_to_le32(i - num_skipped); 121 else 122 cmd.v4.num_valid_ipv6_addrs = 123 cpu_to_le32(i - num_skipped); 124 } else if (capa_flags & IWL_UCODE_TLV_FLAGS_D3_6_IPV6_ADDRS) { 125 bool found = false; 126 127 BUILD_BUG_ON(sizeof(cmd.v2.target_ipv6_addr[0]) != 128 sizeof(mvmvif->target_ipv6_addrs[0])); 129 130 for (i = 0; i < min(mvmvif->num_target_ipv6_addrs, 131 IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V2); i++) { 132 if (skip_tentative && 133 test_bit(i, mvmvif->tentative_addrs)) 134 continue; 135 136 memcpy(cmd.v2.target_ipv6_addr[i], 137 &mvmvif->target_ipv6_addrs[i], 138 sizeof(cmd.v2.target_ipv6_addr[i])); 139 140 found = true; 141 } 142 if (found) { 143 enabled |= IWL_D3_PROTO_IPV6_VALID; 144 memcpy(cmd.v2.ndp_mac_addr, vif->addr, ETH_ALEN); 145 } 146 } else { 147 bool found = false; 148 BUILD_BUG_ON(sizeof(cmd.v1.target_ipv6_addr[0]) != 149 sizeof(mvmvif->target_ipv6_addrs[0])); 150 151 for (i = 0; i < min(mvmvif->num_target_ipv6_addrs, 152 IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V1); i++) { 153 if (skip_tentative && 154 test_bit(i, mvmvif->tentative_addrs)) 155 continue; 156 157 memcpy(cmd.v1.target_ipv6_addr[i], 158 &mvmvif->target_ipv6_addrs[i], 159 sizeof(cmd.v1.target_ipv6_addr[i])); 160 161 found = true; 162 } 163 164 if (found) { 165 enabled |= IWL_D3_PROTO_IPV6_VALID; 166 memcpy(cmd.v1.ndp_mac_addr, vif->addr, ETH_ALEN); 167 } 168 } 169 170 if (offload_ns && (enabled & IWL_D3_PROTO_IPV6_VALID)) 171 enabled |= IWL_D3_PROTO_OFFLOAD_NS; 172 #endif 173 if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL) { 174 common = &cmd.v3s.common; 175 size = sizeof(cmd.v3s); 176 } else if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_LARGE) { 177 common = &cmd.v4.common; 178 size = sizeof(cmd.v4); 179 if (ver < 4) { 180 /* 181 * This basically uses iwl_proto_offload_cmd_v3_large 182 * which doesn't have the sta_id parameter before the 183 * common part. 184 */ 185 size -= sizeof(cmd.v4.sta_id); 186 hcmd.data[0] = common; 187 } 188 } else if (capa_flags & IWL_UCODE_TLV_FLAGS_D3_6_IPV6_ADDRS) { 189 common = &cmd.v2.common; 190 size = sizeof(cmd.v2); 191 } else { 192 common = &cmd.v1.common; 193 size = sizeof(cmd.v1); 194 } 195 196 if (vif->bss_conf.arp_addr_cnt) { 197 enabled |= IWL_D3_PROTO_OFFLOAD_ARP | IWL_D3_PROTO_IPV4_VALID; 198 common->host_ipv4_addr = vif->bss_conf.arp_addr_list[0]; 199 memcpy(common->arp_mac_addr, vif->addr, ETH_ALEN); 200 } 201 202 if (!disable_offloading) 203 common->enabled = cpu_to_le32(enabled); 204 205 hcmd.len[0] = size; 206 return iwl_mvm_send_cmd(mvm, &hcmd); 207 } 208