FreeBSD/Linux Kernel Cross Reference
sys/dev/iwm/if_iwm_sta.c

     /*-
      * Based on BSD-licensed source modules in the Linux iwlwifi driver,
      * which were used as the reference documentation for this implementation.
      *
      * Driver version we are currently based off of is
      * Linux 4.7.3 (tag id d7f6728f57e3ecbb7ef34eb7d9f564d514775d75)
      *
      ***********************************************************************
      *
     * This file is provided under a dual BSD/GPLv2 license.  When using or
     * redistributing this file, you may do so under either license.
     *
     * GPL LICENSE SUMMARY
     *
     * Copyright(c) 2012 - 2015 Intel Corporation. All rights reserved.
     * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
     * Copyright(c) 2016 Intel Deutschland GmbH
     *
     * This program is free software; you can redistribute it and/or modify
     * it under the terms of version 2 of the GNU General Public License as
     * published by the Free Software Foundation.
     *
     * This program is distributed in the hope that it will be useful, but
     * WITHOUT ANY WARRANTY; without even the implied warranty of
     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     * General Public License for more details.
     *
     * You should have received a copy of the GNU General Public License
     * along with this program; if not, write to the Free Software
     * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
     * USA
     *
     * The full GNU General Public License is included in this distribution
     * in the file called COPYING.
     *
     * Contact Information:
     *  Intel Linux Wireless <linuxwifi@intel.com>
     * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
     *
     * BSD LICENSE
     *
     * Copyright(c) 2012 - 2015 Intel Corporation. All rights reserved.
     * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
     * Copyright(c) 2016 Intel Deutschland GmbH
     * All rights reserved.
     *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     *
     *  * Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     *  * Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in
     *    the documentation and/or other materials provided with the
     *    distribution.
     *  * Neither the name Intel Corporation nor the names of its
     *    contributors may be used to endorse or promote products derived
     *    from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     *
     *****************************************************************************/
    
    #include <sys/cdefs.h>
    __FBSDID("$FreeBSD$");
    
    #include "opt_wlan.h"
    #include "opt_iwm.h"
    
    #include <sys/param.h>
    #include <sys/bus.h>
    #include <sys/conf.h>
    #include <sys/endian.h>
    #include <sys/firmware.h>
    #include <sys/kernel.h>
    #include <sys/malloc.h>
    #include <sys/mbuf.h>
    #include <sys/mutex.h>
    #include <sys/module.h>
    #include <sys/proc.h>
    #include <sys/rman.h>
    #include <sys/socket.h>
    #include <sys/sockio.h>
    #include <sys/sysctl.h>
    #include <sys/linker.h>
    
    #include <machine/bus.h>
    #include <machine/endian.h>
   #include <machine/resource.h>
   
   #include <dev/pci/pcivar.h>
   #include <dev/pci/pcireg.h>
   
   #include <net/bpf.h>
   
   #include <net/if.h>
   #include <net/if_var.h>
   #include <net/if_arp.h>
   #include <net/if_dl.h>
   #include <net/if_media.h>
   #include <net/if_types.h>
   
   #include <netinet/in.h>
   #include <netinet/in_systm.h>
   #include <netinet/if_ether.h>
   #include <netinet/ip.h>
   
   #include <net80211/ieee80211_var.h>
   #include <net80211/ieee80211_regdomain.h>
   #include <net80211/ieee80211_ratectl.h>
   #include <net80211/ieee80211_radiotap.h>
   
   #include <dev/iwm/if_iwmreg.h>
   #include <dev/iwm/if_iwmvar.h>
   #include <dev/iwm/if_iwm_config.h>
   #include <dev/iwm/if_iwm_debug.h>
   #include <dev/iwm/if_iwm_constants.h>
   #include <dev/iwm/if_iwm_util.h>
   #include <dev/iwm/if_iwm_mac_ctxt.h>
   #include <dev/iwm/if_iwm_sta.h>
   
   /*
    * New version of ADD_STA_sta command added new fields at the end of the
    * structure, so sending the size of the relevant API's structure is enough to
    * support both API versions.
    */
   static inline int
   iwm_add_sta_cmd_size(struct iwm_softc *sc)
   {
           return sc->cfg->mqrx_supported ? sizeof(struct iwm_add_sta_cmd) :
               sizeof(struct iwm_add_sta_cmd_v7);
   }
   
   /* send station add/update command to firmware */
   int
   iwm_sta_send_to_fw(struct iwm_softc *sc, struct iwm_node *in,
           boolean_t update)
   {
           struct iwm_vap *ivp = IWM_VAP(in->in_ni.ni_vap);
           struct iwm_add_sta_cmd add_sta_cmd = {
                   .sta_id = IWM_STATION_ID,
                   .mac_id_n_color =
                       htole32(IWM_FW_CMD_ID_AND_COLOR(ivp->id, ivp->color)),
                   .add_modify = update ? 1 : 0,
                   .station_flags_msk = htole32(IWM_STA_FLG_FAT_EN_MSK |
                                                IWM_STA_FLG_MIMO_EN_MSK),
                   .tid_disable_tx = htole16(0xffff),
           };
           int ret;
           uint32_t status;
           uint32_t agg_size = 0, mpdu_dens = 0;
   
           if (!update) {
                   int ac;
                   for (ac = 0; ac < WME_NUM_AC; ac++) {
                           add_sta_cmd.tfd_queue_msk |=
                               htole32(1 << iwm_ac_to_tx_fifo[ac]);
                   }
                   IEEE80211_ADDR_COPY(&add_sta_cmd.addr, in->in_ni.ni_bssid);
           }
   
           add_sta_cmd.station_flags |=
                   htole32(agg_size << IWM_STA_FLG_MAX_AGG_SIZE_SHIFT);
           add_sta_cmd.station_flags |=
                   htole32(mpdu_dens << IWM_STA_FLG_AGG_MPDU_DENS_SHIFT);
   
           status = IWM_ADD_STA_SUCCESS;
           ret = iwm_send_cmd_pdu_status(sc, IWM_ADD_STA,
                                             iwm_add_sta_cmd_size(sc),
                                             &add_sta_cmd, &status);
           if (ret)
                   return ret;
   
           switch (status & IWM_ADD_STA_STATUS_MASK) {
           case IWM_ADD_STA_SUCCESS:
                   IWM_DPRINTF(sc, IWM_DEBUG_NODE, "IWM_ADD_STA PASSED\n");
                   break;
           default:
                   ret = EIO;
                   device_printf(sc->sc_dev, "IWM_ADD_STA failed\n");
                   break;
           }
   
           return ret;
   }
   
   int
   iwm_add_sta(struct iwm_softc *sc, struct iwm_node *in)
   {
           return iwm_sta_send_to_fw(sc, in, FALSE);
   }
   
   int
   iwm_update_sta(struct iwm_softc *sc, struct iwm_node *in)
   {
           return iwm_sta_send_to_fw(sc, in, TRUE);
   }
   
   int
   iwm_drain_sta(struct iwm_softc *sc, struct iwm_vap *ivp, boolean_t drain)
   {
           struct iwm_add_sta_cmd cmd = {};
           int ret;
           uint32_t status;
   
           cmd.mac_id_n_color =
               htole32(IWM_FW_CMD_ID_AND_COLOR(ivp->id, ivp->color));
           cmd.sta_id = IWM_STATION_ID;
           cmd.add_modify = IWM_STA_MODE_MODIFY;
           cmd.station_flags = drain ? htole32(IWM_STA_FLG_DRAIN_FLOW) : 0;
           cmd.station_flags_msk = htole32(IWM_STA_FLG_DRAIN_FLOW);
   
           status = IWM_ADD_STA_SUCCESS;
           ret = iwm_send_cmd_pdu_status(sc, IWM_ADD_STA,
                                             iwm_add_sta_cmd_size(sc),
                                             &cmd, &status);
           if (ret)
                   return ret;
   
           switch (status & IWM_ADD_STA_STATUS_MASK) {
           case IWM_ADD_STA_SUCCESS:
                   IWM_DPRINTF(sc, IWM_DEBUG_NODE,
                       "Frames for staid %d will drained in fw\n", IWM_STATION_ID);
                   break;
           default:
                   ret = EIO;
                   device_printf(sc->sc_dev,
                       "Couldn't drain frames for staid %d\n", IWM_STATION_ID);
                   break;
           }
   
           return ret;
   }
   
   /*
    * Remove a station from the FW table. Before sending the command to remove
    * the station validate that the station is indeed known to the driver (sanity
    * only).
    */
   static int
   iwm_rm_sta_common(struct iwm_softc *sc)
   {
           struct iwm_rm_sta_cmd rm_sta_cmd = {
                   .sta_id = IWM_STATION_ID,
           };
           int ret;
   
           ret = iwm_send_cmd_pdu(sc, IWM_REMOVE_STA, 0,
                                      sizeof(rm_sta_cmd), &rm_sta_cmd);
           if (ret) {
                   device_printf(sc->sc_dev,
                       "Failed to remove station. Id=%d\n", IWM_STATION_ID);
                   return ret;
           }
   
           return 0;
   }
   
   int
   iwm_rm_sta(struct iwm_softc *sc, struct ieee80211vap *vap,
           boolean_t is_assoc)
   {
           uint32_t tfd_queue_msk = 0;
           int ret;
           int ac;
   
           ret = iwm_drain_sta(sc, IWM_VAP(vap), TRUE);
           if (ret)
                   return ret;
           for (ac = 0; ac < WME_NUM_AC; ac++) {
                   tfd_queue_msk |= htole32(1 << iwm_ac_to_tx_fifo[ac]);
           }
           ret = iwm_flush_tx_path(sc, tfd_queue_msk, IWM_CMD_SYNC);
           if (ret)
                   return ret;
   #ifdef notyet /* function not yet implemented */
           ret = iwl_trans_wait_tx_queue_empty(mvm->trans,
                                               mvm_sta->tfd_queue_msk);
           if (ret)
                   return ret;
   #endif
           ret = iwm_drain_sta(sc, IWM_VAP(vap), FALSE);
   
           /* if we are associated - we can't remove the AP STA now */
           if (is_assoc)
                   return ret;
   
           /* XXX wait until STA is drained */
   
           ret = iwm_rm_sta_common(sc);
   
           return ret;
   }
   
   int
   iwm_rm_sta_id(struct iwm_softc *sc, struct ieee80211vap *vap)
   {
           /* XXX wait until STA is drained */
   
           return iwm_rm_sta_common(sc);
   }
   
   static int
   iwm_add_int_sta_common(struct iwm_softc *sc, struct iwm_int_sta *sta,
       const uint8_t *addr, uint16_t mac_id, uint16_t color)
   {
           struct iwm_add_sta_cmd cmd;
           int ret;
           uint32_t status;
   
           memset(&cmd, 0, sizeof(cmd));
           cmd.sta_id = sta->sta_id;
           cmd.mac_id_n_color = htole32(IWM_FW_CMD_ID_AND_COLOR(mac_id, color));
           if (sta->sta_id == IWM_AUX_STA_ID && sc->cfg->mqrx_supported)
                   cmd.station_type = IWM_STA_AUX_ACTIVITY;
   
           cmd.tfd_queue_msk = htole32(sta->tfd_queue_msk);
           cmd.tid_disable_tx = htole16(0xffff);
   
           if (addr)
                   IEEE80211_ADDR_COPY(cmd.addr, addr);
   
           ret = iwm_send_cmd_pdu_status(sc, IWM_ADD_STA,
                                             iwm_add_sta_cmd_size(sc),
                                             &cmd, &status);
           if (ret)
                   return ret;
   
           switch (status & IWM_ADD_STA_STATUS_MASK) {
           case IWM_ADD_STA_SUCCESS:
                   IWM_DPRINTF(sc, IWM_DEBUG_NODE, "Internal station added.\n");
                   return 0;
           default:
                   ret = EIO;
                   device_printf(sc->sc_dev,
                       "Add internal station failed, status=0x%x\n", status);
                   break;
           }
           return ret;
   }
   
   int
   iwm_add_aux_sta(struct iwm_softc *sc)
   {
           int ret;
   
           sc->sc_aux_sta.sta_id = IWM_AUX_STA_ID;
           sc->sc_aux_sta.tfd_queue_msk = (1 << IWM_AUX_QUEUE);
   
           /* Map Aux queue to fifo - needs to happen before adding Aux station */
           ret = iwm_enable_txq(sc, IWM_AUX_STA_ID, IWM_AUX_QUEUE,
               IWM_TX_FIFO_MCAST);
           if (ret)
                   return ret;
   
           ret = iwm_add_int_sta_common(sc, &sc->sc_aux_sta, NULL,
                                            IWM_MAC_INDEX_AUX, 0);
   
           if (ret) {
                   memset(&sc->sc_aux_sta, 0, sizeof(sc->sc_aux_sta));
                   sc->sc_aux_sta.sta_id = IWM_STATION_COUNT;
           }
           return ret;
   }
   
   void iwm_del_aux_sta(struct iwm_softc *sc)
   {
           memset(&sc->sc_aux_sta, 0, sizeof(sc->sc_aux_sta));
           sc->sc_aux_sta.sta_id = IWM_STATION_COUNT;
   }

Cache object: e96bd764898a765fc26134635eacb15a