sys/dev/netif/iwm/if_iwm_binding.c

   1 /*      $OpenBSD: if_iwm.c,v 1.39 2015/03/23 00:35:19 jsg Exp $ */
   2
   3 /*
   4  * Copyright (c) 2014 genua mbh <info@genua.de>
   5  * Copyright (c) 2014 Fixup Software Ltd.
   6  *
   7  * Permission to use, copy, modify, and distribute this software for any
   8  * purpose with or without fee is hereby granted, provided that the above
   9  * copyright notice and this permission notice appear in all copies.
  10  *
  11  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  12  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  13  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  14  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  15  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  16  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  17  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  18  */
  19
  20 /*-
  21  * Based on BSD-licensed source modules in the Linux iwlwifi driver,
  22  * which were used as the reference documentation for this implementation.
  23  *
  24  * Driver version we are currently based off of is
  25  * Linux 3.14.3 (tag id a2df521e42b1d9a23f620ac79dbfe8655a8391dd)
  26  *
  27  ***********************************************************************
  28  *
  29  * This file is provided under a dual BSD/GPLv2 license.  When using or
  30  * redistributing this file, you may do so under either license.
  31  *
  32  * GPL LICENSE SUMMARY
  33  *
  34  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  35  *
  36  * This program is free software; you can redistribute it and/or modify
  37  * it under the terms of version 2 of the GNU General Public License as
  38  * published by the Free Software Foundation.
  39  *
  40  * This program is distributed in the hope that it will be useful, but
  41  * WITHOUT ANY WARRANTY; without even the implied warranty of
  42  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  43  * General Public License for more details.
  44  *
  45  * You should have received a copy of the GNU General Public License
  46  * along with this program; if not, write to the Free Software
  47  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  48  * USA
  49  *
  50  * The full GNU General Public License is included in this distribution
  51  * in the file called COPYING.
  52  *
  53  * Contact Information:
  54  *  Intel Linux Wireless <linuxwifi@intel.com>
  55  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  56  *
  57  * BSD LICENSE
  58  *
  59  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  60  * All rights reserved.
  61  *
  62  * Redistribution and use in source and binary forms, with or without
  63  * modification, are permitted provided that the following conditions
  64  * are met:
  65  *
  66  *  * Redistributions of source code must retain the above copyright
  67  *    notice, this list of conditions and the following disclaimer.
  68  *  * Redistributions in binary form must reproduce the above copyright
  69  *    notice, this list of conditions and the following disclaimer in
  70  *    the documentation and/or other materials provided with the
  71  *    distribution.
  72  *  * Neither the name Intel Corporation nor the names of its
  73  *    contributors may be used to endorse or promote products derived
  74  *    from this software without specific prior written permission.
  75  *
  76  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  77  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  78  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  79  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  80  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  81  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  82  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  83  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  84  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  85  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  86  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  87  */
  88
  89 #include <sys/param.h>
  90 #include <sys/bus.h>
  91 #include <sys/conf.h>
  92 #include <sys/endian.h>
  93 #include <sys/firmware.h>
  94 #include <sys/kernel.h>
  95 #include <sys/malloc.h>
  96 #include <sys/mbuf.h>
  97 #include <sys/rman.h>
  98 #include <sys/sysctl.h>
  99 #include <sys/linker.h>
 100
 101 #include <machine/endian.h>
 102
 103 #include <bus/pci/pcivar.h>
 104 #include <bus/pci/pcireg.h>
 105
 106 #include <net/bpf.h>
 107
 108 #include <net/if.h>
 109 #include <net/if_var.h>
 110 #include <net/if_arp.h>
 111 #include <net/if_dl.h>
 112 #include <net/if_media.h>
 113 #include <net/if_types.h>
 114
 115 #include <netinet/in.h>
 116 #include <netinet/in_systm.h>
 117 #include <netinet/if_ether.h>
 118 #include <netinet/ip.h>
 119
 120 #include <netproto/802_11/ieee80211_var.h>
 121 #include <netproto/802_11/ieee80211_regdomain.h>
 122 #include <netproto/802_11/ieee80211_ratectl.h>
 123 #include <netproto/802_11/ieee80211_radiotap.h>
 124
 125 #include "if_iwmreg.h"
 126 #include "if_iwmvar.h"
 127 #include "if_iwm_debug.h"
 128 #include "if_iwm_util.h"
 129 #include "if_iwm_binding.h"
 130 #include "if_iwm_sf.h"
 131
 132 /*
 133  * BEGIN iwlwifi/mvm/binding.c
 134  */
 135
 136 struct iwm_iface_iterator_data {
 137         int idx;
 138
 139         struct iwm_phy_ctxt *phyctxt;
 140
 141         uint16_t ids[IWM_MAX_MACS_IN_BINDING];
 142         int16_t colors[IWM_MAX_MACS_IN_BINDING];
 143 };
 144
 145 static int
 146 iwm_binding_cmd(struct iwm_softc *sc, uint32_t action,
 147         struct iwm_iface_iterator_data *data)
 148 {
 149         struct iwm_binding_cmd_v1 cmd;
 150         struct iwm_phy_ctxt *phyctxt = data->phyctxt;
 151         int i, ret;
 152         uint32_t status;
 153
 154         memset(&cmd, 0, sizeof(cmd));
 155
 156         cmd.id_and_color
 157             = htole32(IWM_FW_CMD_ID_AND_COLOR(phyctxt->id, phyctxt->color));
 158         cmd.action = htole32(action);
 159         cmd.phy = htole32(IWM_FW_CMD_ID_AND_COLOR(phyctxt->id, phyctxt->color));
 160
 161         for (i = 0; i < IWM_MAX_MACS_IN_BINDING; i++)
 162                 cmd.macs[i] = htole32(IWM_FW_CTXT_INVALID);
 163         for (i = 0; i < data->idx; i++)
 164                 cmd.macs[i] = htole32(IWM_FW_CMD_ID_AND_COLOR(data->ids[i],
 165                                                               data->colors[i]));
 166
 167         status = 0;
 168         ret = iwm_send_cmd_pdu_status(sc, IWM_BINDING_CONTEXT_CMD,
 169             sizeof(cmd), &cmd, &status);
 170         if (ret) {
 171                 device_printf(sc->sc_dev,
 172                     "Failed to send binding (action:%d): %d\n", action, ret);
 173                 return ret;
 174         }
 175
 176         if (status) {
 177                 device_printf(sc->sc_dev,
 178                     "Binding command failed: %u\n", status);
 179                 ret = EIO;
 180         }
 181
 182         return ret;
 183 }
 184
 185 static int
 186 iwm_binding_update(struct iwm_softc *sc, struct iwm_vap *ivp,
 187         struct iwm_phy_ctxt *phyctxt, boolean_t add)
 188 {
 189         struct iwm_iface_iterator_data data = {
 190                 .phyctxt = phyctxt,
 191         };
 192         uint32_t action;
 193
 194         if (add)
 195                 action = IWM_FW_CTXT_ACTION_ADD;
 196         else
 197                 action = IWM_FW_CTXT_ACTION_REMOVE;
 198
 199         if (add) {
 200                 data.ids[0] = ivp->id;
 201                 data.colors[0] = ivp->color;
 202                 data.idx++;
 203         }
 204
 205         return iwm_binding_cmd(sc, action, &data);
 206 }
 207
 208 int
 209 iwm_binding_add_vif(struct iwm_softc *sc, struct iwm_vap *ivp)
 210 {
 211         if (!ivp->phy_ctxt)
 212                 return EINVAL;
 213
 214         /*
 215          * Update SF - Disable if needed. if this fails, SF might still be on
 216          * while many macs are bound, which is forbidden - so fail the binding.
 217          */
 218         if (iwm_sf_update(sc, &ivp->iv_vap, FALSE))
 219                 return EINVAL;
 220
 221         return iwm_binding_update(sc, ivp, ivp->phy_ctxt, TRUE);
 222 }
 223
 224 int
 225 iwm_binding_remove_vif(struct iwm_softc *sc, struct iwm_vap *ivp)
 226 {
 227         int ret;
 228
 229         if (!ivp->phy_ctxt)
 230                 return EINVAL;
 231
 232         ret = iwm_binding_update(sc, ivp, ivp->phy_ctxt, FALSE);
 233
 234         if (!ret) {
 235                 if (iwm_sf_update(sc, &ivp->iv_vap, TRUE))
 236                         device_printf(sc->sc_dev,
 237                             "Failed to update SF state\n");
 238         }
 239
 240         return ret;
 241 }