package/mac80211/patches/540-mac80211_add_rx_rate.patch

   1 --- a/include/net/cfg80211.h
   2 +++ b/include/net/cfg80211.h
   3 @@ -414,7 +414,7 @@ struct station_parameters {
   4   * @STATION_INFO_PLID: @plid filled
   5   * @STATION_INFO_PLINK_STATE: @plink_state filled
   6   * @STATION_INFO_SIGNAL: @signal filled
   7 - * @STATION_INFO_TX_BITRATE: @tx_bitrate fields are filled
   8 + * @STATION_INFO_TX_BITRATE: @txrate fields are filled
   9   *  (tx_bitrate, tx_bitrate_flags and tx_bitrate_mcs)
  10   * @STATION_INFO_RX_PACKETS: @rx_packets filled
  11   * @STATION_INFO_TX_PACKETS: @tx_packets filled
  12 @@ -422,6 +422,7 @@ struct station_parameters {
  13   * @STATION_INFO_TX_FAILED: @tx_failed filled
  14   * @STATION_INFO_RX_DROP_MISC: @rx_dropped_misc filled
  15   * @STATION_INFO_SIGNAL_AVG: @signal_avg filled
  16 + * @STATION_INFO_RX_BITRATE: @rxrate fields are filled
  17   */
  18  enum station_info_flags {
  19         STATION_INFO_INACTIVE_TIME      = 1<<0,
  20 @@ -438,6 +439,7 @@ enum station_info_flags {
  21         STATION_INFO_TX_FAILED          = 1<<11,
  22         STATION_INFO_RX_DROP_MISC       = 1<<12,
  23         STATION_INFO_SIGNAL_AVG         = 1<<13,
  24 +       STATION_INFO_RX_BITRATE         = 1<<14,
  25  };
  26
  27  /**
  28 @@ -507,6 +509,7 @@ struct station_info {
  29         s8 signal;
  30         s8 signal_avg;
  31         struct rate_info txrate;
  32 +       struct rate_info rxrate;
  33         u32 rx_packets;
  34         u32 tx_packets;
  35         u32 tx_retries;
  36 --- a/include/linux/nl80211.h
  37 +++ b/include/linux/nl80211.h
  38 @@ -1243,6 +1243,8 @@ enum nl80211_rate_info {
  39   * @NL80211_STA_INFO_LLID: the station's mesh LLID
  40   * @NL80211_STA_INFO_PLID: the station's mesh PLID
  41   * @NL80211_STA_INFO_PLINK_STATE: peer link state for the station
  42 + * @NL80211_STA_INFO_RX_BITRATE: last unicast rx rate, nested attribute
  43 + *     containing info as possible, see &enum nl80211_sta_info_txrate.
  44   * @__NL80211_STA_INFO_AFTER_LAST: internal
  45   * @NL80211_STA_INFO_MAX: highest possible station info attribute
  46   */
  47 @@ -1261,6 +1263,7 @@ enum nl80211_sta_info {
  48         NL80211_STA_INFO_TX_RETRIES,
  49         NL80211_STA_INFO_TX_FAILED,
  50         NL80211_STA_INFO_SIGNAL_AVG,
  51 +       NL80211_STA_INFO_RX_BITRATE,
  52
  53         /* keep last */
  54         __NL80211_STA_INFO_AFTER_LAST,
  55 --- a/net/wireless/nl80211.c
  56 +++ b/net/wireless/nl80211.c
  57 @@ -1968,13 +1968,41 @@ static int parse_station_flags(struct ge
  58         return 0;
  59  }
  60
  61 +static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
  62 +                                int attr)
  63 +{
  64 +       struct nlattr *rate;
  65 +       u16 bitrate;
  66 +
  67 +       rate = nla_nest_start(msg, attr);
  68 +       if (!rate)
  69 +               goto nla_put_failure;
  70 +
  71 +       /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
  72 +       bitrate = cfg80211_calculate_bitrate(info);
  73 +       if (bitrate > 0)
  74 +               NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
  75 +
  76 +       if (info->flags & RATE_INFO_FLAGS_MCS)
  77 +               NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS, info->mcs);
  78 +       if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
  79 +               NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
  80 +       if (info->flags & RATE_INFO_FLAGS_SHORT_GI)
  81 +               NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
  82 +
  83 +       nla_nest_end(msg, rate);
  84 +       return true;
  85 +
  86 +nla_put_failure:
  87 +       return false;
  88 +}
  89 +
  90  static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
  91                                 int flags, struct net_device *dev,
  92                                 const u8 *mac_addr, struct station_info *sinfo)
  93  {
  94         void *hdr;
  95 -       struct nlattr *sinfoattr, *txrate;
  96 -       u16 bitrate;
  97 +       struct nlattr *sinfoattr;
  98
  99         hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
 100         if (!hdr)
 101 @@ -2013,24 +2041,14 @@ static int nl80211_send_station(struct s
 102                 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL_AVG,
 103                            sinfo->signal_avg);
 104         if (sinfo->filled & STATION_INFO_TX_BITRATE) {
 105 -               txrate = nla_nest_start(msg, NL80211_STA_INFO_TX_BITRATE);
 106 -               if (!txrate)
 107 +               if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
 108 +                                         NL80211_STA_INFO_TX_BITRATE))
 109 +                       goto nla_put_failure;
 110 +       }
 111 +       if (sinfo->filled & STATION_INFO_RX_BITRATE) {
 112 +               if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
 113 +                                         NL80211_STA_INFO_RX_BITRATE))
 114                         goto nla_put_failure;
 115 -
 116 -               /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
 117 -               bitrate = cfg80211_calculate_bitrate(&sinfo->txrate);
 118 -               if (bitrate > 0)
 119 -                       NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
 120 -
 121 -               if (sinfo->txrate.flags & RATE_INFO_FLAGS_MCS)
 122 -                       NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS,
 123 -                                   sinfo->txrate.mcs);
 124 -               if (sinfo->txrate.flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
 125 -                       NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
 126 -               if (sinfo->txrate.flags & RATE_INFO_FLAGS_SHORT_GI)
 127 -                       NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
 128 -
 129 -               nla_nest_end(msg, txrate);
 130         }
 131         if (sinfo->filled & STATION_INFO_RX_PACKETS)
 132                 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS,
 133 --- a/net/mac80211/sta_info.h
 134 +++ b/net/mac80211/sta_info.h
 135 @@ -212,6 +212,8 @@ enum plink_state {
 136   * @rate_ctrl_priv: rate control private per-STA pointer
 137   * @last_tx_rate: rate used for last transmit, to report to userspace as
 138   *     "the" transmit rate
 139 + * @last_rx_rate_idx: rx status rate index of the last data packet
 140 + * @last_rx_rate_flag: rx status flag of the last data packet
 141   * @lock: used for locking all fields that require locking, see comments
 142   *     in the header file.
 143   * @flaglock: spinlock for flags accesses
 144 @@ -314,6 +316,8 @@ struct sta_info {
 145         unsigned long tx_bytes;
 146         unsigned long tx_fragments;
 147         struct ieee80211_tx_rate last_tx_rate;
 148 +       int last_rx_rate_idx;
 149 +       int last_rx_rate_flag;
 150         u16 tid_seq[IEEE80211_QOS_CTL_TID_MASK + 1];
 151
 152         /*
 153 --- a/net/mac80211/rx.c
 154 +++ b/net/mac80211/rx.c
 155 @@ -1156,14 +1156,23 @@ ieee80211_rx_h_sta_process(struct ieee80
 156         if (rx->sdata->vif.type == NL80211_IFTYPE_ADHOC) {
 157                 u8 *bssid = ieee80211_get_bssid(hdr, rx->skb->len,
 158                                                 NL80211_IFTYPE_ADHOC);
 159 -               if (compare_ether_addr(bssid, rx->sdata->u.ibss.bssid) == 0)
 160 +               if (compare_ether_addr(bssid, rx->sdata->u.ibss.bssid) == 0) {
 161                         sta->last_rx = jiffies;
 162 +                       if (ieee80211_is_data(hdr->frame_control)) {
 163 +                               sta->last_rx_rate_idx = status->rate_idx;
 164 +                               sta->last_rx_rate_flag = status->flag;
 165 +                       }
 166 +               }
 167         } else if (!is_multicast_ether_addr(hdr->addr1)) {
 168                 /*
 169                  * Mesh beacons will update last_rx when if they are found to
 170                  * match the current local configuration when processed.
 171                  */
 172                 sta->last_rx = jiffies;
 173 +               if (ieee80211_is_data(hdr->frame_control)) {
 174 +                       sta->last_rx_rate_idx = status->rate_idx;
 175 +                       sta->last_rx_rate_flag = status->flag;
 176 +               }
 177         }
 178
 179         if (!(status->rx_flags & IEEE80211_RX_RA_MATCH))
 180 --- a/net/mac80211/cfg.c
 181 +++ b/net/mac80211/cfg.c
 182 @@ -316,6 +316,17 @@ static int ieee80211_config_default_mgmt
 183         return 0;
 184  }
 185
 186 +static void rate_idx_to_bitrate(struct rate_info *rate, struct sta_info *sta, int idx)
 187 +{
 188 +       if (!(rate->flags & RATE_INFO_FLAGS_MCS)) {
 189 +               struct ieee80211_supported_band *sband;
 190 +               sband = sta->local->hw.wiphy->bands[
 191 +                               sta->local->hw.conf.channel->band];
 192 +               rate->legacy = sband->bitrates[idx].bitrate;
 193 +       } else
 194 +               rate->mcs = idx;
 195 +}
 196 +
 197  static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 198  {
 199         struct ieee80211_sub_if_data *sdata = sta->sdata;
 200 @@ -330,6 +341,7 @@ static void sta_set_sinfo(struct sta_inf
 201                         STATION_INFO_TX_RETRIES |
 202                         STATION_INFO_TX_FAILED |
 203                         STATION_INFO_TX_BITRATE |
 204 +                       STATION_INFO_RX_BITRATE |
 205                         STATION_INFO_RX_DROP_MISC;
 206
 207         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 208 @@ -355,15 +367,16 @@ static void sta_set_sinfo(struct sta_inf
 209                 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 210         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_SHORT_GI)
 211                 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 212 +       rate_idx_to_bitrate(&sinfo->txrate, sta, sta->last_tx_rate.idx);
 213
 214 -       if (!(sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)) {
 215 -               struct ieee80211_supported_band *sband;
 216 -               sband = sta->local->hw.wiphy->bands[
 217 -                               sta->local->hw.conf.channel->band];
 218 -               sinfo->txrate.legacy =
 219 -                       sband->bitrates[sta->last_tx_rate.idx].bitrate;
 220 -       } else
 221 -               sinfo->txrate.mcs = sta->last_tx_rate.idx;
 222 +       sinfo->rxrate.flags = 0;
 223 +       if (sta->last_rx_rate_flag & RX_FLAG_HT)
 224 +               sinfo->rxrate.flags |= RATE_INFO_FLAGS_MCS;
 225 +       if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 226 +               sinfo->rxrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 227 +       if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 228 +               sinfo->rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 229 +       rate_idx_to_bitrate(&sinfo->rxrate, sta, sta->last_rx_rate_idx);
 230
 231         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 232  #ifdef CONFIG_MAC80211_MESH