drivers/net/wireless/iwlwifi/mvm/offloading.c

   1 /******************************************************************************
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   3  * This file is provided under a dual BSD/GPLv2 license.  When using or
   4  * redistributing this file, you may do so under either license.
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   6  * GPL LICENSE SUMMARY
   7  *
   8  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of version 2 of the GNU General Public License as
  12  * published by the Free Software Foundation.
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  14  * This program is distributed in the hope that it will be useful, but
  15  * WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.
  18  *
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  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  22  * USA
  23  *
  24  * The full GNU General Public License is included in this distribution
  25  * in the file called COPYING.
  26  *
  27  * Contact Information:
  28  *  Intel Linux Wireless <ilw@linux.intel.com>
  29  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  30  *
  31  * BSD LICENSE
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  33  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
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  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
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  44  *    the documentation and/or other materials provided with the
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  48  *    from this software without specific prior written permission.
  49  *
  50  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  51  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  52  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  53  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  54  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  55  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  56  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  57  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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  59  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  60  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  61  *
  62  *****************************************************************************/
  63 #include <net/ipv6.h>
  64 #include <net/addrconf.h>
  65 #include "mvm.h"
  66
  67 void iwl_mvm_set_wowlan_qos_seq(struct iwl_mvm_sta *mvm_ap_sta,
  68                                 struct iwl_wowlan_config_cmd_v2 *cmd)
  69 {
  70         int i;
  71
  72         /*
  73          * For QoS counters, we store the one to use next, so subtract 0x10
  74          * since the uCode will add 0x10 *before* using the value while we
  75          * increment after using the value (i.e. store the next value to use).
  76          */
  77         for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
  78                 u16 seq = mvm_ap_sta->tid_data[i].seq_number;
  79                 seq -= 0x10;
  80                 cmd->qos_seq[i] = cpu_to_le16(seq);
  81         }
  82 }
  83
  84 int iwl_mvm_send_proto_offload(struct iwl_mvm *mvm,
  85                                struct ieee80211_vif *vif,
  86                                bool disable_offloading,
  87                                u32 cmd_flags)
  88 {
  89         union {
  90                 struct iwl_proto_offload_cmd_v1 v1;
  91                 struct iwl_proto_offload_cmd_v2 v2;
  92                 struct iwl_proto_offload_cmd_v3_small v3s;
  93                 struct iwl_proto_offload_cmd_v3_large v3l;
  94         } cmd = {};
  95         struct iwl_host_cmd hcmd = {
  96                 .id = PROT_OFFLOAD_CONFIG_CMD,
  97                 .flags = cmd_flags,
  98                 .data[0] = &cmd,
  99                 .dataflags[0] = IWL_HCMD_DFL_DUP,
 100         };
 101         struct iwl_proto_offload_cmd_common *common;
 102         u32 enabled = 0, size;
 103         u32 capa_flags = mvm->fw->ucode_capa.flags;
 104 #if IS_ENABLED(CONFIG_IPV6)
 105         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 106         int i;
 107
 108         if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL ||
 109             capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_LARGE) {
 110                 struct iwl_ns_config *nsc;
 111                 struct iwl_targ_addr *addrs;
 112                 int n_nsc, n_addrs;
 113                 int c;
 114
 115                 if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL) {
 116                         nsc = cmd.v3s.ns_config;
 117                         n_nsc = IWL_PROTO_OFFLOAD_NUM_NS_CONFIG_V3S;
 118                         addrs = cmd.v3s.targ_addrs;
 119                         n_addrs = IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V3S;
 120                 } else {
 121                         nsc = cmd.v3l.ns_config;
 122                         n_nsc = IWL_PROTO_OFFLOAD_NUM_NS_CONFIG_V3L;
 123                         addrs = cmd.v3l.targ_addrs;
 124                         n_addrs = IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V3L;
 125                 }
 126
 127                 if (mvmvif->num_target_ipv6_addrs)
 128                         enabled |= IWL_D3_PROTO_OFFLOAD_NS;
 129
 130                 /*
 131                  * For each address we have (and that will fit) fill a target
 132                  * address struct and combine for NS offload structs with the
 133                  * solicited node addresses.
 134                  */
 135                 for (i = 0, c = 0;
 136                      i < mvmvif->num_target_ipv6_addrs &&
 137                      i < n_addrs && c < n_nsc; i++) {
 138                         struct in6_addr solicited_addr;
 139                         int j;
 140
 141                         addrconf_addr_solict_mult(&mvmvif->target_ipv6_addrs[i],
 142                                                   &solicited_addr);
 143                         for (j = 0; j < c; j++)
 144                                 if (ipv6_addr_cmp(&nsc[j].dest_ipv6_addr,
 145                                                   &solicited_addr) == 0)
 146                                         break;
 147                         if (j == c)
 148                                 c++;
 149                         addrs[i].addr = mvmvif->target_ipv6_addrs[i];
 150                         addrs[i].config_num = cpu_to_le32(j);
 151                         nsc[j].dest_ipv6_addr = solicited_addr;
 152                         memcpy(nsc[j].target_mac_addr, vif->addr, ETH_ALEN);
 153                 }
 154
 155                 if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL)
 156                         cmd.v3s.num_valid_ipv6_addrs = cpu_to_le32(i);
 157                 else
 158                         cmd.v3l.num_valid_ipv6_addrs = cpu_to_le32(i);
 159         } else if (capa_flags & IWL_UCODE_TLV_FLAGS_D3_6_IPV6_ADDRS) {
 160                 if (mvmvif->num_target_ipv6_addrs) {
 161                         enabled |= IWL_D3_PROTO_OFFLOAD_NS;
 162                         memcpy(cmd.v2.ndp_mac_addr, vif->addr, ETH_ALEN);
 163                 }
 164
 165                 BUILD_BUG_ON(sizeof(cmd.v2.target_ipv6_addr[0]) !=
 166                              sizeof(mvmvif->target_ipv6_addrs[0]));
 167
 168                 for (i = 0; i < min(mvmvif->num_target_ipv6_addrs,
 169                                     IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V2); i++)
 170                         memcpy(cmd.v2.target_ipv6_addr[i],
 171                                &mvmvif->target_ipv6_addrs[i],
 172                                sizeof(cmd.v2.target_ipv6_addr[i]));
 173         } else {
 174                 if (mvmvif->num_target_ipv6_addrs) {
 175                         enabled |= IWL_D3_PROTO_OFFLOAD_NS;
 176                         memcpy(cmd.v1.ndp_mac_addr, vif->addr, ETH_ALEN);
 177                 }
 178
 179                 BUILD_BUG_ON(sizeof(cmd.v1.target_ipv6_addr[0]) !=
 180                              sizeof(mvmvif->target_ipv6_addrs[0]));
 181
 182                 for (i = 0; i < min(mvmvif->num_target_ipv6_addrs,
 183                                     IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V1); i++)
 184                         memcpy(cmd.v1.target_ipv6_addr[i],
 185                                &mvmvif->target_ipv6_addrs[i],
 186                                sizeof(cmd.v1.target_ipv6_addr[i]));
 187         }
 188 #endif
 189
 190         if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL) {
 191                 common = &cmd.v3s.common;
 192                 size = sizeof(cmd.v3s);
 193         } else if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_LARGE) {
 194                 common = &cmd.v3l.common;
 195                 size = sizeof(cmd.v3l);
 196         } else if (capa_flags & IWL_UCODE_TLV_FLAGS_D3_6_IPV6_ADDRS) {
 197                 common = &cmd.v2.common;
 198                 size = sizeof(cmd.v2);
 199         } else {
 200                 common = &cmd.v1.common;
 201                 size = sizeof(cmd.v1);
 202         }
 203
 204         if (vif->bss_conf.arp_addr_cnt) {
 205                 enabled |= IWL_D3_PROTO_OFFLOAD_ARP;
 206                 common->host_ipv4_addr = vif->bss_conf.arp_addr_list[0];
 207                 memcpy(common->arp_mac_addr, vif->addr, ETH_ALEN);
 208         }
 209
 210         if (!disable_offloading)
 211                 common->enabled = cpu_to_le32(enabled);
 212
 213         hcmd.len[0] = size;
 214         return iwl_mvm_send_cmd(mvm, &hcmd);
 215 }