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1// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause2/*3 * Copyright (C) 2012-2014, 2021-2022, 2024 Intel Corporation4 * Copyright (C) 2013-2014 Intel Mobile Communications GmbH5 * Copyright (C) 2015 Intel Deutschland GmbH6 */7#include <net/ipv6.h>8#include <net/addrconf.h>9#include <linux/bitops.h>10#include "mvm.h"11 12void 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 0x1019 * since the uCode will add 0x10 *before* using the value while we20 * 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 29int 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 u8 sta_id)35{36 union {37 struct iwl_proto_offload_cmd_v1 v1;38 struct iwl_proto_offload_cmd_v2 v2;39 struct iwl_proto_offload_cmd_v3_small v3s;40 struct iwl_proto_offload_cmd_v4 v4;41 } cmd = {};42 struct iwl_host_cmd hcmd = {43 .id = PROT_OFFLOAD_CONFIG_CMD,44 .flags = cmd_flags,45 .data[0] = &cmd,46 .dataflags[0] = IWL_HCMD_DFL_DUP,47 };48 struct iwl_proto_offload_cmd_common *common;49 u32 enabled = 0, size;50 u32 capa_flags = mvm->fw->ucode_capa.flags;51 int ver = iwl_fw_lookup_cmd_ver(mvm->fw, hcmd.id, 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 avoid58 * violating RFC4862.59 * Keep tentative address when ns offload is disabled so the NS packets60 * 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 target86 * address struct and combine for NS offload structs with the87 * 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 else122 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#endif173 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_large182 * which doesn't have the sta_id parameter before the183 * 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->cfg.arp_addr_cnt) {197 enabled |= IWL_D3_PROTO_OFFLOAD_ARP | IWL_D3_PROTO_IPV4_VALID;198 common->host_ipv4_addr = vif->cfg.arp_addr_list[0];199 memcpy(common->arp_mac_addr, vif->addr, ETH_ALEN);200 }201 202 if (fw_has_capa(&mvm->fw->ucode_capa,203 IWL_UCODE_TLV_CAPA_OFFLOAD_BTM_SUPPORT))204 enabled |= IWL_D3_PROTO_OFFLOAD_BTM;205 206 if (!disable_offloading)207 common->enabled = cpu_to_le32(enabled);208 209 if (ver >= 4)210 cmd.v4.sta_id = cpu_to_le32(sta_id);211 212 hcmd.len[0] = size;213 return iwl_mvm_send_cmd(mvm, &hcmd);214}215