1 /*- 2 * Based on BSD-licensed source modules in the Linux iwlwifi driver, 3 * which were used as the reference documentation for this implementation. 4 * 5 * Driver version we are currently based off of is 6 * Linux 4.7.3 (tag id d7f6728f57e3ecbb7ef34eb7d9f564d514775d75) 7 * 8 *********************************************************************** 9 * 10 * This file is provided under a dual BSD/GPLv2 license. When using or 11 * redistributing this file, you may do so under either license. 12 * 13 * GPL LICENSE SUMMARY 14 * 15 * Copyright(c) 2012 - 2015 Intel Corporation. All rights reserved. 16 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 17 * Copyright(c) 2016 Intel Deutschland GmbH 18 * 19 * This program is free software; you can redistribute it and/or modify 20 * it under the terms of version 2 of the GNU General Public License as 21 * published by the Free Software Foundation. 22 * 23 * This program is distributed in the hope that it will be useful, but 24 * WITHOUT ANY WARRANTY; without even the implied warranty of 25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 26 * General Public License for more details. 27 * 28 * You should have received a copy of the GNU General Public License 29 * along with this program; if not, write to the Free Software 30 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, 31 * USA 32 * 33 * The full GNU General Public License is included in this distribution 34 * in the file called COPYING. 35 * 36 * Contact Information: 37 * Intel Linux Wireless <linuxwifi@intel.com> 38 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 39 * 40 * BSD LICENSE 41 * 42 * Copyright(c) 2012 - 2015 Intel Corporation. All rights reserved. 43 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 44 * Copyright(c) 2016 Intel Deutschland GmbH 45 * All rights reserved. 46 * 47 * Redistribution and use in source and binary forms, with or without 48 * modification, are permitted provided that the following conditions 49 * are met: 50 * 51 * * Redistributions of source code must retain the above copyright 52 * notice, this list of conditions and the following disclaimer. 53 * * Redistributions in binary form must reproduce the above copyright 54 * notice, this list of conditions and the following disclaimer in 55 * the documentation and/or other materials provided with the 56 * distribution. 57 * * Neither the name Intel Corporation nor the names of its 58 * contributors may be used to endorse or promote products derived 59 * from this software without specific prior written permission. 60 * 61 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 62 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 63 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 64 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 65 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 66 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 67 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 68 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 69 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 70 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 71 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 72 * 73 *****************************************************************************/ 74 75 #include <sys/param.h> 76 #include <sys/bus.h> 77 #include <sys/endian.h> 78 #include <sys/kernel.h> 79 #include <sys/malloc.h> 80 81 #include <machine/endian.h> 82 83 #include <net/bpf.h> 84 85 #include <net/if.h> 86 #include <net/if_var.h> 87 #include <net/if_arp.h> 88 #include <net/if_dl.h> 89 #include <net/if_media.h> 90 #include <net/if_types.h> 91 92 #include <netinet/in.h> 93 #include <netinet/in_systm.h> 94 #include <netinet/if_ether.h> 95 #include <netinet/ip.h> 96 97 #include <netproto/802_11/ieee80211_var.h> 98 #include <netproto/802_11/ieee80211_regdomain.h> 99 #include <netproto/802_11/ieee80211_ratectl.h> 100 #include <netproto/802_11/ieee80211_radiotap.h> 101 102 #include "if_iwmreg.h" 103 #include "if_iwmvar.h" 104 #include "if_iwm_config.h" 105 #include "if_iwm_debug.h" 106 #include "if_iwm_constants.h" 107 #include "if_iwm_util.h" 108 #include "if_iwm_mac_ctxt.h" 109 #include "if_iwm_sta.h" 110 111 /* 112 * New version of ADD_STA_sta command added new fields at the end of the 113 * structure, so sending the size of the relevant API's structure is enough to 114 * support both API versions. 115 */ 116 static inline int 117 iwm_mvm_add_sta_cmd_size(struct iwm_softc *sc) 118 { 119 #ifdef notyet 120 return iwm_mvm_has_new_rx_api(mvm) ? 121 sizeof(struct iwm_mvm_add_sta_cmd) : 122 sizeof(struct iwm_mvm_add_sta_cmd_v7); 123 #else 124 return sizeof(struct iwm_mvm_add_sta_cmd); 125 #endif 126 } 127 128 /* send station add/update command to firmware */ 129 int 130 iwm_mvm_sta_send_to_fw(struct iwm_softc *sc, struct iwm_node *in, 131 boolean_t update) 132 { 133 struct iwm_vap *ivp = IWM_VAP(in->in_ni.ni_vap); 134 struct iwm_mvm_add_sta_cmd add_sta_cmd = { 135 .sta_id = IWM_STATION_ID, 136 .mac_id_n_color = 137 htole32(IWM_FW_CMD_ID_AND_COLOR(ivp->id, ivp->color)), 138 .add_modify = update ? 1 : 0, 139 .station_flags_msk = htole32(IWM_STA_FLG_FAT_EN_MSK | 140 IWM_STA_FLG_MIMO_EN_MSK), 141 .tid_disable_tx = htole16(0xffff), 142 }; 143 int ret; 144 uint32_t status; 145 uint32_t agg_size = 0, mpdu_dens = 0; 146 147 if (!update) { 148 int ac; 149 for (ac = 0; ac < WME_NUM_AC; ac++) { 150 add_sta_cmd.tfd_queue_msk |= 151 htole32(1 << iwm_mvm_ac_to_tx_fifo[ac]); 152 } 153 IEEE80211_ADDR_COPY(&add_sta_cmd.addr, in->in_ni.ni_bssid); 154 } 155 156 add_sta_cmd.station_flags |= 157 htole32(agg_size << IWM_STA_FLG_MAX_AGG_SIZE_SHIFT); 158 add_sta_cmd.station_flags |= 159 htole32(mpdu_dens << IWM_STA_FLG_AGG_MPDU_DENS_SHIFT); 160 161 status = IWM_ADD_STA_SUCCESS; 162 ret = iwm_mvm_send_cmd_pdu_status(sc, IWM_ADD_STA, 163 iwm_mvm_add_sta_cmd_size(sc), 164 &add_sta_cmd, &status); 165 if (ret) 166 return ret; 167 168 switch (status & IWM_ADD_STA_STATUS_MASK) { 169 case IWM_ADD_STA_SUCCESS: 170 IWM_DPRINTF(sc, IWM_DEBUG_NODE, "IWM_ADD_STA PASSED\n"); 171 break; 172 default: 173 ret = EIO; 174 device_printf(sc->sc_dev, "IWM_ADD_STA failed\n"); 175 break; 176 } 177 178 return ret; 179 } 180 181 int 182 iwm_mvm_add_sta(struct iwm_softc *sc, struct iwm_node *in) 183 { 184 return iwm_mvm_sta_send_to_fw(sc, in, FALSE); 185 } 186 187 int 188 iwm_mvm_update_sta(struct iwm_softc *sc, struct iwm_node *in) 189 { 190 return iwm_mvm_sta_send_to_fw(sc, in, TRUE); 191 } 192 193 int 194 iwm_mvm_drain_sta(struct iwm_softc *sc, struct iwm_vap *ivp, boolean_t drain) 195 { 196 struct iwm_mvm_add_sta_cmd cmd = {}; 197 int ret; 198 uint32_t status; 199 200 cmd.mac_id_n_color = 201 htole32(IWM_FW_CMD_ID_AND_COLOR(ivp->id, ivp->color)); 202 cmd.sta_id = IWM_STATION_ID; 203 cmd.add_modify = IWM_STA_MODE_MODIFY; 204 cmd.station_flags = drain ? htole32(IWM_STA_FLG_DRAIN_FLOW) : 0; 205 cmd.station_flags_msk = htole32(IWM_STA_FLG_DRAIN_FLOW); 206 207 status = IWM_ADD_STA_SUCCESS; 208 ret = iwm_mvm_send_cmd_pdu_status(sc, IWM_ADD_STA, 209 iwm_mvm_add_sta_cmd_size(sc), 210 &cmd, &status); 211 if (ret) 212 return ret; 213 214 switch (status & IWM_ADD_STA_STATUS_MASK) { 215 case IWM_ADD_STA_SUCCESS: 216 IWM_DPRINTF(sc, IWM_DEBUG_NODE, 217 "Frames for staid %d will drained in fw\n", IWM_STATION_ID); 218 break; 219 default: 220 ret = EIO; 221 device_printf(sc->sc_dev, 222 "Couldn't drain frames for staid %d\n", IWM_STATION_ID); 223 break; 224 } 225 226 return ret; 227 } 228 229 /* 230 * Remove a station from the FW table. Before sending the command to remove 231 * the station validate that the station is indeed known to the driver (sanity 232 * only). 233 */ 234 static int 235 iwm_mvm_rm_sta_common(struct iwm_softc *sc) 236 { 237 struct iwm_mvm_rm_sta_cmd rm_sta_cmd = { 238 .sta_id = IWM_STATION_ID, 239 }; 240 int ret; 241 242 ret = iwm_mvm_send_cmd_pdu(sc, IWM_REMOVE_STA, 0, 243 sizeof(rm_sta_cmd), &rm_sta_cmd); 244 if (ret) { 245 device_printf(sc->sc_dev, 246 "Failed to remove station. Id=%d\n", IWM_STATION_ID); 247 return ret; 248 } 249 250 return 0; 251 } 252 253 int 254 iwm_mvm_rm_sta(struct iwm_softc *sc, struct ieee80211vap *vap, 255 boolean_t is_assoc) 256 { 257 uint32_t tfd_queue_msk = 0; 258 int ret; 259 int ac; 260 261 ret = iwm_mvm_drain_sta(sc, IWM_VAP(vap), TRUE); 262 if (ret) 263 return ret; 264 mbufq_drain(&sc->sc_snd); /* XXX needed ? */ 265 for (ac = 0; ac < WME_NUM_AC; ac++) { 266 tfd_queue_msk |= htole32(1 << iwm_mvm_ac_to_tx_fifo[ac]); 267 } 268 ret = iwm_mvm_flush_tx_path(sc, tfd_queue_msk, 0); 269 if (ret) 270 return ret; 271 #ifdef notyet /* function not yet implemented */ 272 ret = iwl_trans_wait_tx_queue_empty(mvm->trans, 273 mvm_sta->tfd_queue_msk); 274 if (ret) 275 return ret; 276 #endif 277 ret = iwm_mvm_drain_sta(sc, IWM_VAP(vap), FALSE); 278 279 /* if we are associated - we can't remove the AP STA now */ 280 if (is_assoc) 281 return ret; 282 283 /* XXX wait until STA is drained */ 284 285 ret = iwm_mvm_rm_sta_common(sc); 286 287 return ret; 288 } 289 290 int 291 iwm_mvm_rm_sta_id(struct iwm_softc *sc, struct ieee80211vap *vap) 292 { 293 /* XXX wait until STA is drained */ 294 295 return iwm_mvm_rm_sta_common(sc); 296 } 297 298 static int 299 iwm_mvm_add_int_sta_common(struct iwm_softc *sc, struct iwm_int_sta *sta, 300 const uint8_t *addr, uint16_t mac_id, uint16_t color) 301 { 302 struct iwm_mvm_add_sta_cmd cmd; 303 int ret; 304 uint32_t status; 305 306 memset(&cmd, 0, sizeof(cmd)); 307 cmd.sta_id = sta->sta_id; 308 cmd.mac_id_n_color = htole32(IWM_FW_CMD_ID_AND_COLOR(mac_id, color)); 309 310 cmd.tfd_queue_msk = htole32(sta->tfd_queue_msk); 311 cmd.tid_disable_tx = htole16(0xffff); 312 313 if (addr) 314 IEEE80211_ADDR_COPY(cmd.addr, addr); 315 316 ret = iwm_mvm_send_cmd_pdu_status(sc, IWM_ADD_STA, 317 iwm_mvm_add_sta_cmd_size(sc), 318 &cmd, &status); 319 if (ret) 320 return ret; 321 322 switch (status & IWM_ADD_STA_STATUS_MASK) { 323 case IWM_ADD_STA_SUCCESS: 324 IWM_DPRINTF(sc, IWM_DEBUG_NODE, "Internal station added.\n"); 325 return 0; 326 default: 327 ret = EIO; 328 device_printf(sc->sc_dev, 329 "Add internal station failed, status=0x%x\n", status); 330 break; 331 } 332 return ret; 333 } 334 335 int 336 iwm_mvm_add_aux_sta(struct iwm_softc *sc) 337 { 338 int ret; 339 340 sc->sc_aux_sta.sta_id = IWM_AUX_STA_ID; 341 sc->sc_aux_sta.tfd_queue_msk = (1 << IWM_MVM_AUX_QUEUE); 342 343 /* Map Aux queue to fifo - needs to happen before adding Aux station */ 344 ret = iwm_enable_txq(sc, 0, IWM_MVM_AUX_QUEUE, IWM_MVM_TX_FIFO_MCAST); 345 if (ret) 346 return ret; 347 348 ret = iwm_mvm_add_int_sta_common(sc, &sc->sc_aux_sta, NULL, 349 IWM_MAC_INDEX_AUX, 0); 350 351 if (ret) { 352 memset(&sc->sc_aux_sta, 0, sizeof(sc->sc_aux_sta)); 353 sc->sc_aux_sta.sta_id = IWM_MVM_STATION_COUNT; 354 } 355 return ret; 356 } 357 358 void iwm_mvm_del_aux_sta(struct iwm_softc *sc) 359 { 360 memset(&sc->sc_aux_sta, 0, sizeof(sc->sc_aux_sta)); 361 sc->sc_aux_sta.sta_id = IWM_MVM_STATION_COUNT; 362 } 363