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) 2016 Intel Deutschland 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 <linuxwifi@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) 2016 Intel Deutschland 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 66 #include <net/mac80211.h> 67 #include "fw-api.h" 68 #include "mvm.h" 69 70 struct iwl_mvm_iface_iterator_data { 71 struct ieee80211_vif *ignore_vif; 72 int idx; 73 74 struct iwl_mvm_phy_ctxt *phyctxt; 75 76 u16 ids[MAX_MACS_IN_BINDING]; 77 u16 colors[MAX_MACS_IN_BINDING]; 78 }; 79 80 static int iwl_mvm_binding_cmd(struct iwl_mvm *mvm, u32 action, 81 struct iwl_mvm_iface_iterator_data *data) 82 { 83 struct iwl_binding_cmd cmd; 84 struct iwl_mvm_phy_ctxt *phyctxt = data->phyctxt; 85 int i, ret; 86 u32 status; 87 int size; 88 89 memset(&cmd, 0, sizeof(cmd)); 90 91 if (fw_has_capa(&mvm->fw->ucode_capa, 92 IWL_UCODE_TLV_CAPA_BINDING_CDB_SUPPORT)) { 93 size = sizeof(cmd); 94 if (phyctxt->channel->band == NL80211_BAND_2GHZ || 95 !iwl_mvm_is_cdb_supported(mvm)) 96 cmd.lmac_id = cpu_to_le32(IWL_LMAC_24G_INDEX); 97 else 98 cmd.lmac_id = cpu_to_le32(IWL_LMAC_5G_INDEX); 99 } else { 100 size = IWL_BINDING_CMD_SIZE_V1; 101 } 102 103 cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(phyctxt->id, 104 phyctxt->color)); 105 cmd.action = cpu_to_le32(action); 106 cmd.phy = cpu_to_le32(FW_CMD_ID_AND_COLOR(phyctxt->id, 107 phyctxt->color)); 108 109 for (i = 0; i < MAX_MACS_IN_BINDING; i++) 110 cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID); 111 for (i = 0; i < data->idx; i++) 112 cmd.macs[i] = cpu_to_le32(FW_CMD_ID_AND_COLOR(data->ids[i], 113 data->colors[i])); 114 115 status = 0; 116 ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD, 117 size, &cmd, &status); 118 if (ret) { 119 IWL_ERR(mvm, "Failed to send binding (action:%d): %d\n", 120 action, ret); 121 return ret; 122 } 123 124 if (status) { 125 IWL_ERR(mvm, "Binding command failed: %u\n", status); 126 ret = -EIO; 127 } 128 129 return ret; 130 } 131 132 static void iwl_mvm_iface_iterator(void *_data, u8 *mac, 133 struct ieee80211_vif *vif) 134 { 135 struct iwl_mvm_iface_iterator_data *data = _data; 136 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 137 138 if (vif == data->ignore_vif) 139 return; 140 141 if (mvmvif->phy_ctxt != data->phyctxt) 142 return; 143 144 if (WARN_ON_ONCE(data->idx >= MAX_MACS_IN_BINDING)) 145 return; 146 147 data->ids[data->idx] = mvmvif->id; 148 data->colors[data->idx] = mvmvif->color; 149 data->idx++; 150 } 151 152 static int iwl_mvm_binding_update(struct iwl_mvm *mvm, 153 struct ieee80211_vif *vif, 154 struct iwl_mvm_phy_ctxt *phyctxt, 155 bool add) 156 { 157 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 158 struct iwl_mvm_iface_iterator_data data = { 159 .ignore_vif = vif, 160 .phyctxt = phyctxt, 161 }; 162 u32 action = FW_CTXT_ACTION_MODIFY; 163 164 lockdep_assert_held(&mvm->mutex); 165 166 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 167 IEEE80211_IFACE_ITER_NORMAL, 168 iwl_mvm_iface_iterator, 169 &data); 170 171 /* 172 * If there are no other interfaces yet we 173 * need to create a new binding. 174 */ 175 if (data.idx == 0) { 176 if (add) 177 action = FW_CTXT_ACTION_ADD; 178 else 179 action = FW_CTXT_ACTION_REMOVE; 180 } 181 182 if (add) { 183 if (WARN_ON_ONCE(data.idx >= MAX_MACS_IN_BINDING)) 184 return -EINVAL; 185 186 data.ids[data.idx] = mvmvif->id; 187 data.colors[data.idx] = mvmvif->color; 188 data.idx++; 189 } 190 191 return iwl_mvm_binding_cmd(mvm, action, &data); 192 } 193 194 int iwl_mvm_binding_add_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 195 { 196 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 197 198 if (WARN_ON_ONCE(!mvmvif->phy_ctxt)) 199 return -EINVAL; 200 201 /* 202 * Update SF - Disable if needed. if this fails, SF might still be on 203 * while many macs are bound, which is forbidden - so fail the binding. 204 */ 205 if (iwl_mvm_sf_update(mvm, vif, false)) 206 return -EINVAL; 207 208 return iwl_mvm_binding_update(mvm, vif, mvmvif->phy_ctxt, true); 209 } 210 211 int iwl_mvm_binding_remove_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 212 { 213 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 214 int ret; 215 216 if (WARN_ON_ONCE(!mvmvif->phy_ctxt)) 217 return -EINVAL; 218 219 ret = iwl_mvm_binding_update(mvm, vif, mvmvif->phy_ctxt, false); 220 221 if (!ret) 222 if (iwl_mvm_sf_update(mvm, vif, true)) 223 IWL_ERR(mvm, "Failed to update SF state\n"); 224 225 return ret; 226 } 227