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/cdefs.h> 76#include "opt_wlan.h" 77#include "opt_iwm.h" 78 79#include <sys/param.h> 80#include <sys/bus.h> 81#include <sys/conf.h> 82#include <sys/endian.h> 83#include <sys/firmware.h> 84#include <sys/kernel.h> 85#include <sys/malloc.h> 86#include <sys/mbuf.h> 87#include <sys/mutex.h> 88#include <sys/module.h> 89#include <sys/proc.h> 90#include <sys/rman.h> 91#include <sys/socket.h> 92#include <sys/sockio.h> 93#include <sys/sysctl.h> 94#include <sys/linker.h> 95 96#include <machine/bus.h> 97#include <machine/endian.h> 98#include <machine/resource.h> 99 100#include <dev/pci/pcivar.h> 101#include <dev/pci/pcireg.h> 102 103#include <net/bpf.h> 104 105#include <net/if.h> 106#include <net/if_var.h> 107#include <net/if_arp.h> 108#include <net/if_dl.h> 109#include <net/if_media.h> 110#include <net/if_types.h> 111 112#include <netinet/in.h> 113#include <netinet/in_systm.h> 114#include <netinet/if_ether.h> 115#include <netinet/ip.h> 116 117#include <net80211/ieee80211_var.h> 118#include <net80211/ieee80211_regdomain.h> 119#include <net80211/ieee80211_ratectl.h> 120#include <net80211/ieee80211_radiotap.h> 121 122#include <dev/iwm/if_iwmreg.h> 123#include <dev/iwm/if_iwmvar.h> 124#include <dev/iwm/if_iwm_config.h> 125#include <dev/iwm/if_iwm_debug.h> 126#include <dev/iwm/if_iwm_constants.h> 127#include <dev/iwm/if_iwm_util.h> 128#include <dev/iwm/if_iwm_mac_ctxt.h> 129#include <dev/iwm/if_iwm_sta.h> 130 131/* 132 * New version of ADD_STA_sta command added new fields at the end of the 133 * structure, so sending the size of the relevant API's structure is enough to 134 * support both API versions. 135 */ 136static inline int 137iwm_add_sta_cmd_size(struct iwm_softc *sc) 138{ 139 return sc->cfg->mqrx_supported ? sizeof(struct iwm_add_sta_cmd) : 140 sizeof(struct iwm_add_sta_cmd_v7); 141} 142 143/* send station add/update command to firmware */ 144int 145iwm_sta_send_to_fw(struct iwm_softc *sc, struct iwm_node *in, 146 boolean_t update) 147{ 148 struct iwm_vap *ivp = IWM_VAP(in->in_ni.ni_vap); 149 struct iwm_add_sta_cmd add_sta_cmd = { 150 .sta_id = IWM_STATION_ID, 151 .mac_id_n_color = 152 htole32(IWM_FW_CMD_ID_AND_COLOR(ivp->id, ivp->color)), 153 .add_modify = update ? 1 : 0, 154 .station_flags_msk = htole32(IWM_STA_FLG_FAT_EN_MSK | 155 IWM_STA_FLG_MIMO_EN_MSK), 156 .tid_disable_tx = htole16(0xffff), 157 }; 158 int ret; 159 uint32_t status; 160 uint32_t agg_size = 0, mpdu_dens = 0; 161 162 if (!update) { 163 int ac; 164 for (ac = 0; ac < WME_NUM_AC; ac++) { 165 add_sta_cmd.tfd_queue_msk |= 166 htole32(1 << iwm_ac_to_tx_fifo[ac]); 167 } 168 IEEE80211_ADDR_COPY(&add_sta_cmd.addr, in->in_ni.ni_bssid); 169 } 170 171 add_sta_cmd.station_flags |= 172 htole32(agg_size << IWM_STA_FLG_MAX_AGG_SIZE_SHIFT); 173 add_sta_cmd.station_flags |= 174 htole32(mpdu_dens << IWM_STA_FLG_AGG_MPDU_DENS_SHIFT); 175 176 status = IWM_ADD_STA_SUCCESS; 177 ret = iwm_send_cmd_pdu_status(sc, IWM_ADD_STA, 178 iwm_add_sta_cmd_size(sc), 179 &add_sta_cmd, &status); 180 if (ret) 181 return ret; 182 183 switch (status & IWM_ADD_STA_STATUS_MASK) { 184 case IWM_ADD_STA_SUCCESS: 185 IWM_DPRINTF(sc, IWM_DEBUG_NODE, "IWM_ADD_STA PASSED\n"); 186 break; 187 default: 188 ret = EIO; 189 device_printf(sc->sc_dev, "IWM_ADD_STA failed\n"); 190 break; 191 } 192 193 return ret; 194} 195 196int 197iwm_add_sta(struct iwm_softc *sc, struct iwm_node *in) 198{ 199 return iwm_sta_send_to_fw(sc, in, FALSE); 200} 201 202int 203iwm_update_sta(struct iwm_softc *sc, struct iwm_node *in) 204{ 205 return iwm_sta_send_to_fw(sc, in, TRUE); 206} 207 208int 209iwm_drain_sta(struct iwm_softc *sc, struct iwm_vap *ivp, boolean_t drain) 210{ 211 struct iwm_add_sta_cmd cmd = {}; 212 int ret; 213 uint32_t status; 214 215 cmd.mac_id_n_color = 216 htole32(IWM_FW_CMD_ID_AND_COLOR(ivp->id, ivp->color)); 217 cmd.sta_id = IWM_STATION_ID; 218 cmd.add_modify = IWM_STA_MODE_MODIFY; 219 cmd.station_flags = drain ? htole32(IWM_STA_FLG_DRAIN_FLOW) : 0; 220 cmd.station_flags_msk = htole32(IWM_STA_FLG_DRAIN_FLOW); 221 222 status = IWM_ADD_STA_SUCCESS; 223 ret = iwm_send_cmd_pdu_status(sc, IWM_ADD_STA, 224 iwm_add_sta_cmd_size(sc), 225 &cmd, &status); 226 if (ret) 227 return ret; 228 229 switch (status & IWM_ADD_STA_STATUS_MASK) { 230 case IWM_ADD_STA_SUCCESS: 231 IWM_DPRINTF(sc, IWM_DEBUG_NODE, 232 "Frames for staid %d will drained in fw\n", IWM_STATION_ID); 233 break; 234 default: 235 ret = EIO; 236 device_printf(sc->sc_dev, 237 "Couldn't drain frames for staid %d\n", IWM_STATION_ID); 238 break; 239 } 240 241 return ret; 242} 243 244/* 245 * Remove a station from the FW table. Before sending the command to remove 246 * the station validate that the station is indeed known to the driver (sanity 247 * only). 248 */ 249static int 250iwm_rm_sta_common(struct iwm_softc *sc) 251{ 252 struct iwm_rm_sta_cmd rm_sta_cmd = { 253 .sta_id = IWM_STATION_ID, 254 }; 255 int ret; 256 257 ret = iwm_send_cmd_pdu(sc, IWM_REMOVE_STA, 0, 258 sizeof(rm_sta_cmd), &rm_sta_cmd); 259 if (ret) { 260 device_printf(sc->sc_dev, 261 "Failed to remove station. Id=%d\n", IWM_STATION_ID); 262 return ret; 263 } 264 265 return 0; 266} 267 268int 269iwm_rm_sta(struct iwm_softc *sc, struct ieee80211vap *vap, 270 boolean_t is_assoc) 271{ 272 uint32_t tfd_queue_msk = 0; 273 int ret; 274 int ac; 275 276 ret = iwm_drain_sta(sc, IWM_VAP(vap), TRUE); 277 if (ret) 278 return ret; 279 for (ac = 0; ac < WME_NUM_AC; ac++) { 280 tfd_queue_msk |= htole32(1 << iwm_ac_to_tx_fifo[ac]); 281 } 282 ret = iwm_flush_tx_path(sc, tfd_queue_msk, IWM_CMD_SYNC); 283 if (ret) 284 return ret; 285#ifdef notyet /* function not yet implemented */ 286 ret = iwl_trans_wait_tx_queue_empty(mvm->trans, 287 mvm_sta->tfd_queue_msk); 288 if (ret) 289 return ret; 290#endif 291 ret = iwm_drain_sta(sc, IWM_VAP(vap), FALSE); 292 293 /* if we are associated - we can't remove the AP STA now */ 294 if (is_assoc) 295 return ret; 296 297 /* XXX wait until STA is drained */ 298 299 ret = iwm_rm_sta_common(sc); 300 301 return ret; 302} 303 304int 305iwm_rm_sta_id(struct iwm_softc *sc, struct ieee80211vap *vap) 306{ 307 /* XXX wait until STA is drained */ 308 309 return iwm_rm_sta_common(sc); 310} 311 312static int 313iwm_add_int_sta_common(struct iwm_softc *sc, struct iwm_int_sta *sta, 314 const uint8_t *addr, uint16_t mac_id, uint16_t color) 315{ 316 struct iwm_add_sta_cmd cmd; 317 int ret; 318 uint32_t status; 319 320 memset(&cmd, 0, sizeof(cmd)); 321 cmd.sta_id = sta->sta_id; 322 cmd.mac_id_n_color = htole32(IWM_FW_CMD_ID_AND_COLOR(mac_id, color)); 323 if (sta->sta_id == IWM_AUX_STA_ID && sc->cfg->mqrx_supported) 324 cmd.station_type = IWM_STA_AUX_ACTIVITY; 325 326 cmd.tfd_queue_msk = htole32(sta->tfd_queue_msk); 327 cmd.tid_disable_tx = htole16(0xffff); 328 329 if (addr) 330 IEEE80211_ADDR_COPY(cmd.addr, addr); 331 332 ret = iwm_send_cmd_pdu_status(sc, IWM_ADD_STA, 333 iwm_add_sta_cmd_size(sc), 334 &cmd, &status); 335 if (ret) 336 return ret; 337 338 switch (status & IWM_ADD_STA_STATUS_MASK) { 339 case IWM_ADD_STA_SUCCESS: 340 IWM_DPRINTF(sc, IWM_DEBUG_NODE, "Internal station added.\n"); 341 return 0; 342 default: 343 ret = EIO; 344 device_printf(sc->sc_dev, 345 "Add internal station failed, status=0x%x\n", status); 346 break; 347 } 348 return ret; 349} 350 351int 352iwm_add_aux_sta(struct iwm_softc *sc) 353{ 354 int ret; 355 356 sc->sc_aux_sta.sta_id = IWM_AUX_STA_ID; 357 sc->sc_aux_sta.tfd_queue_msk = (1 << IWM_AUX_QUEUE); 358 359 /* Map Aux queue to fifo - needs to happen before adding Aux station */ 360 ret = iwm_enable_txq(sc, IWM_AUX_STA_ID, IWM_AUX_QUEUE, 361 IWM_TX_FIFO_MCAST); 362 if (ret) 363 return ret; 364 365 ret = iwm_add_int_sta_common(sc, &sc->sc_aux_sta, NULL, 366 IWM_MAC_INDEX_AUX, 0); 367 368 if (ret) { 369 memset(&sc->sc_aux_sta, 0, sizeof(sc->sc_aux_sta)); 370 sc->sc_aux_sta.sta_id = IWM_STATION_COUNT; 371 } 372 return ret; 373} 374 375void iwm_del_aux_sta(struct iwm_softc *sc) 376{ 377 memset(&sc->sc_aux_sta, 0, sizeof(sc->sc_aux_sta)); 378 sc->sc_aux_sta.sta_id = IWM_STATION_COUNT; 379} 380