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

   1 /******************************************************************************
   2  *
   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.
   5  *
   6  * GPL LICENSE SUMMARY
   7  *
   8  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
   9  * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of version 2 of the GNU General Public License as
  13  * published by the Free Software Foundation.
  14  *
  15  * This program is distributed in the hope that it will be useful, but
  16  * WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  23  * USA
  24  *
  25  * The full GNU General Public License is included in this distribution
  26  * in the file called COPYING.
  27  *
  28  * Contact Information:
  29  *  Intel Linux Wireless <ilw@linux.intel.com>
  30  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  31  *
  32  * BSD LICENSE
  33  *
  34  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  35  * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
  36  * All rights reserved.
  37  *
  38  * Redistribution and use in source and binary forms, with or without
  39  * modification, are permitted provided that the following conditions
  40  * are met:
  41  *
  42  *  * Redistributions of source code must retain the above copyright
  43  *    notice, this list of conditions and the following disclaimer.
  44  *  * Redistributions in binary form must reproduce the above copyright
  45  *    notice, this list of conditions and the following disclaimer in
  46  *    the documentation and/or other materials provided with the
  47  *    distribution.
  48  *  * Neither the name Intel Corporation nor the names of its
  49  *    contributors may be used to endorse or promote products derived
  50  *    from this software without specific prior written permission.
  51  *
  52  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  53  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  54  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  55  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  56  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  57  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  58  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  59  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  60  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  61  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  62  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  63  *
  64  *****************************************************************************/
  65 #include <net/ipv6.h>
  66 #include <net/addrconf.h>
  67 #include "mvm.h"
  68
  69 void iwl_mvm_set_wowlan_qos_seq(struct iwl_mvm_sta *mvm_ap_sta,
  70                                 struct iwl_wowlan_config_cmd *cmd)
  71 {
  72         int i;
  73
  74         /*
  75          * For QoS counters, we store the one to use next, so subtract 0x10
  76          * since the uCode will add 0x10 *before* using the value while we
  77          * increment after using the value (i.e. store the next value to use).
  78          */
  79         for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
  80                 u16 seq = mvm_ap_sta->tid_data[i].seq_number;
  81                 seq -= 0x10;
  82                 cmd->qos_seq[i] = cpu_to_le16(seq);
  83         }
  84 }
  85
  86 int iwl_mvm_send_proto_offload(struct iwl_mvm *mvm,
  87                                struct ieee80211_vif *vif,
  88                                bool disable_offloading,
  89                                u32 cmd_flags)
  90 {
  91         union {
  92                 struct iwl_proto_offload_cmd_v1 v1;
  93                 struct iwl_proto_offload_cmd_v2 v2;
  94                 struct iwl_proto_offload_cmd_v3_small v3s;
  95                 struct iwl_proto_offload_cmd_v3_large v3l;
  96         } cmd = {};
  97         struct iwl_host_cmd hcmd = {
  98                 .id = PROT_OFFLOAD_CONFIG_CMD,
  99                 .flags = cmd_flags,
 100                 .data[0] = &cmd,
 101                 .dataflags[0] = IWL_HCMD_DFL_DUP,
 102         };
 103         struct iwl_proto_offload_cmd_common *common;
 104         u32 enabled = 0, size;
 105         u32 capa_flags = mvm->fw->ucode_capa.flags;
 106 #if IS_ENABLED(CONFIG_IPV6)
 107         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 108         int i;
 109
 110         if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL ||
 111             capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_LARGE) {
 112                 struct iwl_ns_config *nsc;
 113                 struct iwl_targ_addr *addrs;
 114                 int n_nsc, n_addrs;
 115                 int c;
 116
 117                 if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL) {
 118                         nsc = cmd.v3s.ns_config;
 119                         n_nsc = IWL_PROTO_OFFLOAD_NUM_NS_CONFIG_V3S;
 120                         addrs = cmd.v3s.targ_addrs;
 121                         n_addrs = IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V3S;
 122                 } else {
 123                         nsc = cmd.v3l.ns_config;
 124                         n_nsc = IWL_PROTO_OFFLOAD_NUM_NS_CONFIG_V3L;
 125                         addrs = cmd.v3l.targ_addrs;
 126                         n_addrs = IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V3L;
 127                 }
 128
 129                 if (mvmvif->num_target_ipv6_addrs)
 130                         enabled |= IWL_D3_PROTO_OFFLOAD_NS;
 131
 132                 /*
 133                  * For each address we have (and that will fit) fill a target
 134                  * address struct and combine for NS offload structs with the
 135                  * solicited node addresses.
 136                  */
 137                 for (i = 0, c = 0;
 138                      i < mvmvif->num_target_ipv6_addrs &&
 139                      i < n_addrs && c < n_nsc; i++) {
 140                         struct in6_addr solicited_addr;
 141                         int j;
 142
 143                         addrconf_addr_solict_mult(&mvmvif->target_ipv6_addrs[i],
 144                                                   &solicited_addr);
 145                         for (j = 0; j < c; j++)
 146                                 if (ipv6_addr_cmp(&nsc[j].dest_ipv6_addr,
 147                                                   &solicited_addr) == 0)
 148                                         break;
 149                         if (j == c)
 150                                 c++;
 151                         addrs[i].addr = mvmvif->target_ipv6_addrs[i];
 152                         addrs[i].config_num = cpu_to_le32(j);
 153                         nsc[j].dest_ipv6_addr = solicited_addr;
 154                         memcpy(nsc[j].target_mac_addr, vif->addr, ETH_ALEN);
 155                 }
 156
 157                 if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL)
 158                         cmd.v3s.num_valid_ipv6_addrs = cpu_to_le32(i);
 159                 else
 160                         cmd.v3l.num_valid_ipv6_addrs = cpu_to_le32(i);
 161         } else if (capa_flags & IWL_UCODE_TLV_FLAGS_D3_6_IPV6_ADDRS) {
 162                 if (mvmvif->num_target_ipv6_addrs) {
 163                         enabled |= IWL_D3_PROTO_OFFLOAD_NS;
 164                         memcpy(cmd.v2.ndp_mac_addr, vif->addr, ETH_ALEN);
 165                 }
 166
 167                 BUILD_BUG_ON(sizeof(cmd.v2.target_ipv6_addr[0]) !=
 168                              sizeof(mvmvif->target_ipv6_addrs[0]));
 169
 170                 for (i = 0; i < min(mvmvif->num_target_ipv6_addrs,
 171                                     IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V2); i++)
 172                         memcpy(cmd.v2.target_ipv6_addr[i],
 173                                &mvmvif->target_ipv6_addrs[i],
 174                                sizeof(cmd.v2.target_ipv6_addr[i]));
 175         } else {
 176                 if (mvmvif->num_target_ipv6_addrs) {
 177                         enabled |= IWL_D3_PROTO_OFFLOAD_NS;
 178                         memcpy(cmd.v1.ndp_mac_addr, vif->addr, ETH_ALEN);
 179                 }
 180
 181                 BUILD_BUG_ON(sizeof(cmd.v1.target_ipv6_addr[0]) !=
 182                              sizeof(mvmvif->target_ipv6_addrs[0]));
 183
 184                 for (i = 0; i < min(mvmvif->num_target_ipv6_addrs,
 185                                     IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V1); i++)
 186                         memcpy(cmd.v1.target_ipv6_addr[i],
 187                                &mvmvif->target_ipv6_addrs[i],
 188                                sizeof(cmd.v1.target_ipv6_addr[i]));
 189         }
 190 #endif
 191
 192         if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL) {
 193                 common = &cmd.v3s.common;
 194                 size = sizeof(cmd.v3s);
 195         } else if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_LARGE) {
 196                 common = &cmd.v3l.common;
 197                 size = sizeof(cmd.v3l);
 198         } else if (capa_flags & IWL_UCODE_TLV_FLAGS_D3_6_IPV6_ADDRS) {
 199                 common = &cmd.v2.common;
 200                 size = sizeof(cmd.v2);
 201         } else {
 202                 common = &cmd.v1.common;
 203                 size = sizeof(cmd.v1);
 204         }
 205
 206         if (vif->bss_conf.arp_addr_cnt) {
 207                 enabled |= IWL_D3_PROTO_OFFLOAD_ARP;
 208                 common->host_ipv4_addr = vif->bss_conf.arp_addr_list[0];
 209                 memcpy(common->arp_mac_addr, vif->addr, ETH_ALEN);
 210         }
 211
 212         if (!disable_offloading)
 213                 common->enabled = cpu_to_le32(enabled);
 214
 215         hcmd.len[0] = size;
 216         return iwl_mvm_send_cmd(mvm, &hcmd);
 217 }