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

     /*      $OpenBSD: if_iwm.c,v 1.39 2015/03/23 00:35:19 jsg Exp $ */
     
     /*
      * Copyright (c) 2014 genua mbh <info@genua.de>
      * Copyright (c) 2014 Fixup Software Ltd.
      *
      * Permission to use, copy, modify, and distribute this software for any
      * purpose with or without fee is hereby granted, provided that the above
      * copyright notice and this permission notice appear in all copies.
     *
     * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
     * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
     * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
     * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
     * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
     * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
     * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     */
    
    /*-
     * 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 3.14.3 (tag id a2df521e42b1d9a23f620ac79dbfe8655a8391dd)
     *
     ***********************************************************************
     *
     * 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 - 2014 Intel Corporation. All rights reserved.
     *
     * 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 - 2014 Intel Corporation. All rights reserved.
     * 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_debug.h>
   #include <dev/iwm/if_iwm_util.h>
   #include <dev/iwm/if_iwm_binding.h>
   #include <dev/iwm/if_iwm_sf.h>
   
   /*
    * BEGIN iwlwifi/mvm/binding.c
    */
   
   struct iwm_iface_iterator_data {
           int idx;
   
           struct iwm_phy_ctxt *phyctxt;
   
           uint16_t ids[IWM_MAX_MACS_IN_BINDING];
           int16_t colors[IWM_MAX_MACS_IN_BINDING];
   };
   
   static int
   iwm_binding_cmd(struct iwm_softc *sc, uint32_t action,
           struct iwm_iface_iterator_data *data)
   {
           struct iwm_binding_cmd cmd;
           struct iwm_phy_ctxt *phyctxt = data->phyctxt;
           int i, ret;
           uint32_t status;
   
           memset(&cmd, 0, sizeof(cmd));
   
           cmd.id_and_color
               = htole32(IWM_FW_CMD_ID_AND_COLOR(phyctxt->id, phyctxt->color));
           cmd.action = htole32(action);
           cmd.phy = htole32(IWM_FW_CMD_ID_AND_COLOR(phyctxt->id, phyctxt->color));
   
           for (i = 0; i < IWM_MAX_MACS_IN_BINDING; i++)
                   cmd.macs[i] = htole32(IWM_FW_CTXT_INVALID);
           for (i = 0; i < data->idx; i++)
                   cmd.macs[i] = htole32(IWM_FW_CMD_ID_AND_COLOR(data->ids[i],
                                                                 data->colors[i]));
   
           status = 0;
           ret = iwm_send_cmd_pdu_status(sc, IWM_BINDING_CONTEXT_CMD,
               sizeof(cmd), &cmd, &status);
           if (ret) {
                   device_printf(sc->sc_dev,
                       "Failed to send binding (action:%d): %d\n", action, ret);
                   return ret;
           }
   
           if (status) {
                   device_printf(sc->sc_dev,
                       "Binding command failed: %u\n", status);
                   ret = EIO;
           }
   
           return ret;
   }
   
   static int
   iwm_binding_update(struct iwm_softc *sc, struct iwm_vap *ivp,
           struct iwm_phy_ctxt *phyctxt, boolean_t add)
   {
           struct iwm_iface_iterator_data data = {
                   .phyctxt = phyctxt,
           };
           uint32_t action;
   
           if (add)
                   action = IWM_FW_CTXT_ACTION_ADD;
           else
                   action = IWM_FW_CTXT_ACTION_REMOVE;
   
           if (add) {
                   data.ids[0] = ivp->id;
                   data.colors[0] = ivp->color;
                   data.idx++;
           }
   
           return iwm_binding_cmd(sc, action, &data);
   }
   
   int
   iwm_binding_add_vif(struct iwm_softc *sc, struct iwm_vap *ivp)
   {
           if (!ivp->phy_ctxt)
                   return EINVAL;
   
           /*
            * Update SF - Disable if needed. if this fails, SF might still be on
            * while many macs are bound, which is forbidden - so fail the binding.
            */
           if (iwm_sf_update(sc, &ivp->iv_vap, FALSE))
                   return EINVAL;
   
           return iwm_binding_update(sc, ivp, ivp->phy_ctxt, TRUE);
   }
   
   int
   iwm_binding_remove_vif(struct iwm_softc *sc, struct iwm_vap *ivp)
   {
           int ret;
   
           if (!ivp->phy_ctxt)
                   return EINVAL;
   
           ret = iwm_binding_update(sc, ivp, ivp->phy_ctxt, FALSE);
   
           if (!ret) {
                   if (iwm_sf_update(sc, &ivp->iv_vap, TRUE))
                           device_printf(sc->sc_dev,
                               "Failed to update SF state\n");
           }
   
           return ret;
   }

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