net/mac802154/mac_cmd.c

   1 /*
   2  * MAC commands interface
   3  *
   4  * Copyright 2007-2012 Siemens AG
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * Written by:
  16  * Sergey Lapin <slapin@ossfans.org>
  17  * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
  18  * Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
  19  */
  20
  21 #include <linux/skbuff.h>
  22 #include <linux/if_arp.h>
  23 #include <linux/ieee802154.h>
  24
  25 #include <net/ieee802154_netdev.h>
  26 #include <net/cfg802154.h>
  27 #include <net/mac802154.h>
  28 #include <net/nl802154.h>
  29
  30 #include "ieee802154_i.h"
  31 #include "driver-ops.h"
  32
  33 static int mac802154_mlme_start_req(struct net_device *dev,
  34                                     struct ieee802154_addr *addr,
  35                                     u8 channel, u8 page,
  36                                     u8 bcn_ord, u8 sf_ord,
  37                                     u8 pan_coord, u8 blx,
  38                                     u8 coord_realign)
  39 {
  40         struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev);
  41         int rc = 0;
  42
  43         BUG_ON(addr->mode != IEEE802154_ADDR_SHORT);
  44
  45         mac802154_dev_set_pan_id(dev, addr->pan_id);
  46         mac802154_dev_set_short_addr(dev, addr->short_addr);
  47         mac802154_dev_set_page_channel(dev, page, channel);
  48
  49         if (ops->llsec) {
  50                 struct ieee802154_llsec_params params;
  51                 int changed = 0;
  52
  53                 params.coord_shortaddr = addr->short_addr;
  54                 changed |= IEEE802154_LLSEC_PARAM_COORD_SHORTADDR;
  55
  56                 params.pan_id = addr->pan_id;
  57                 changed |= IEEE802154_LLSEC_PARAM_PAN_ID;
  58
  59                 params.hwaddr = ieee802154_devaddr_from_raw(dev->dev_addr);
  60                 changed |= IEEE802154_LLSEC_PARAM_HWADDR;
  61
  62                 params.coord_hwaddr = params.hwaddr;
  63                 changed |= IEEE802154_LLSEC_PARAM_COORD_HWADDR;
  64
  65                 rc = ops->llsec->set_params(dev, &params, changed);
  66         }
  67
  68         /* FIXME: add validation for unused parameters to be sane
  69          * for SoftMAC
  70          */
  71         ieee802154_nl_start_confirm(dev, IEEE802154_SUCCESS);
  72
  73         return rc;
  74 }
  75
  76 static struct wpan_phy *mac802154_get_phy(const struct net_device *dev)
  77 {
  78         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
  79
  80         BUG_ON(dev->type != ARPHRD_IEEE802154);
  81
  82         return to_phy(get_device(&sdata->local->phy->dev));
  83 }
  84
  85 static int mac802154_set_mac_params(struct net_device *dev,
  86                                     const struct ieee802154_mac_params *params)
  87 {
  88         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
  89         struct ieee802154_local *local = sdata->local;
  90         int ret;
  91
  92         mutex_lock(&sdata->local->iflist_mtx);
  93         sdata->mac_params = *params;
  94         mutex_unlock(&sdata->local->iflist_mtx);
  95
  96         if (local->hw.flags & IEEE802154_HW_TXPOWER) {
  97                 ret = drv_set_tx_power(local, params->transmit_power);
  98                 if (ret < 0)
  99                         return ret;
 100         }
 101
 102         if (local->hw.flags & IEEE802154_HW_CCA_MODE) {
 103                 ret = drv_set_cca_mode(local, params->cca_mode);
 104                 if (ret < 0)
 105                         return ret;
 106         }
 107
 108         if (local->hw.flags & IEEE802154_HW_CCA_ED_LEVEL) {
 109                 ret = drv_set_cca_ed_level(local, params->cca_ed_level);
 110                 if (ret < 0)
 111                         return ret;
 112         }
 113
 114         return 0;
 115 }
 116
 117 static void mac802154_get_mac_params(struct net_device *dev,
 118                                      struct ieee802154_mac_params *params)
 119 {
 120         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
 121
 122         mutex_lock(&sdata->local->iflist_mtx);
 123         *params = sdata->mac_params;
 124         mutex_unlock(&sdata->local->iflist_mtx);
 125 }
 126
 127 static struct ieee802154_llsec_ops mac802154_llsec_ops = {
 128         .get_params = mac802154_get_params,
 129         .set_params = mac802154_set_params,
 130         .add_key = mac802154_add_key,
 131         .del_key = mac802154_del_key,
 132         .add_dev = mac802154_add_dev,
 133         .del_dev = mac802154_del_dev,
 134         .add_devkey = mac802154_add_devkey,
 135         .del_devkey = mac802154_del_devkey,
 136         .add_seclevel = mac802154_add_seclevel,
 137         .del_seclevel = mac802154_del_seclevel,
 138         .lock_table = mac802154_lock_table,
 139         .get_table = mac802154_get_table,
 140         .unlock_table = mac802154_unlock_table,
 141 };
 142
 143 struct ieee802154_reduced_mlme_ops mac802154_mlme_reduced = {
 144         .get_phy = mac802154_get_phy,
 145 };
 146
 147 struct ieee802154_mlme_ops mac802154_mlme_wpan = {
 148         .get_phy = mac802154_get_phy,
 149         .start_req = mac802154_mlme_start_req,
 150         .get_pan_id = mac802154_dev_get_pan_id,
 151         .get_short_addr = mac802154_dev_get_short_addr,
 152         .get_dsn = mac802154_dev_get_dsn,
 153
 154         .llsec = &mac802154_llsec_ops,
 155
 156         .set_mac_params = mac802154_set_mac_params,
 157         .get_mac_params = mac802154_get_mac_params,
 158 };