iwlwifi: use generic mac80211 radiotap headers

remove drivers own implementation of radiotap in favor of the generic one
provided by mac80211.

also remove priv->add_radiotap because it is not used any more.

Signed-off-by: Bruno Randolf <br1@einfach.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 7 insertions, 97 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-3945.c b/drivers/net/wireless/iwlwifi/iwl-3945.c
index 3f51f363534..8dc26adc197 100644
--- a/drivers/net/wireless/iwlwifi/iwl-3945.c
+++ b/drivers/net/wireless/iwlwifi/iwl-3945.c
@@ -531,99 +531,6 @@ static int iwl3945_is_network_packet(struct iwl3945_priv *priv,
         }
 }
 
-static void iwl3945_add_radiotap(struct iwl3945_priv *priv,
-                                 struct sk_buff *skb,
-                                 struct iwl3945_rx_frame_hdr *rx_hdr,
-                                 struct ieee80211_rx_status *stats)
-{
-        /* First cache any information we need before we overwrite
-         * the information provided in the skb from the hardware */
-        s8 signal = stats->signal;
-        s8 noise = 0;
-        int rate = stats->rate_idx;
-        u64 tsf = stats->mactime;
-        __le16 phy_flags_hw = rx_hdr->phy_flags, antenna;
-
-        struct iwl3945_rt_rx_hdr {
-                struct ieee80211_radiotap_header rt_hdr;
-                __le64 rt_tsf;          /* TSF */
-                u8 rt_flags;            /* radiotap packet flags */
-                u8 rt_rate;             /* rate in 500kb/s */
-                __le16 rt_channelMHz;   /* channel in MHz */
-                __le16 rt_chbitmask;    /* channel bitfield */
-                s8 rt_dbmsignal;        /* signal in dBm, kluged to signed */
-                s8 rt_dbmnoise;
-                u8 rt_antenna;          /* antenna number */
-        } __attribute__ ((packed)) *iwl3945_rt;
-
-        if (skb_headroom(skb) < sizeof(*iwl3945_rt)) {
-                if (net_ratelimit())
-                        printk(KERN_ERR "not enough headroom [%d] for "
-                               "radiotap head [%zd]\n",
-                               skb_headroom(skb), sizeof(*iwl3945_rt));
-                return;
-        }
-
-        /* put radiotap header in front of 802.11 header and data */
-        iwl3945_rt = (void *)skb_push(skb, sizeof(*iwl3945_rt));
-
-        /* initialise radiotap header */
-        iwl3945_rt->rt_hdr.it_version = PKTHDR_RADIOTAP_VERSION;
-        iwl3945_rt->rt_hdr.it_pad = 0;
-
-        /* total header + data */
-        put_unaligned_le16(sizeof(*iwl3945_rt), &iwl3945_rt->rt_hdr.it_len);
-
-        /* Indicate all the fields we add to the radiotap header */
-        put_unaligned_le32((1 << IEEE80211_RADIOTAP_TSFT) |
-                           (1 << IEEE80211_RADIOTAP_FLAGS) |
-                           (1 << IEEE80211_RADIOTAP_RATE) |
-                           (1 << IEEE80211_RADIOTAP_CHANNEL) |
-                           (1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL) |
-                           (1 << IEEE80211_RADIOTAP_DBM_ANTNOISE) |
-                           (1 << IEEE80211_RADIOTAP_ANTENNA),
-                        &iwl3945_rt->rt_hdr.it_present);
-
-        /* Zero the flags, we'll add to them as we go */
-        iwl3945_rt->rt_flags = 0;
-
-        put_unaligned_le64(tsf, &iwl3945_rt->rt_tsf);
-
-        iwl3945_rt->rt_dbmsignal = signal;
-        iwl3945_rt->rt_dbmnoise = noise;
-
-        /* Convert the channel frequency and set the flags */
-        put_unaligned_le16(stats->freq, &iwl3945_rt->rt_channelMHz);
-        if (!(phy_flags_hw & RX_RES_PHY_FLAGS_BAND_24_MSK))
-                put_unaligned_le16(IEEE80211_CHAN_OFDM | IEEE80211_CHAN_5GHZ,
-                              &iwl3945_rt->rt_chbitmask);
-        else if (phy_flags_hw & RX_RES_PHY_FLAGS_MOD_CCK_MSK)
-                put_unaligned_le16(IEEE80211_CHAN_CCK | IEEE80211_CHAN_2GHZ,
-                              &iwl3945_rt->rt_chbitmask);
-        else    /* 802.11g */
-                put_unaligned_le16(IEEE80211_CHAN_OFDM | IEEE80211_CHAN_2GHZ,
-                              &iwl3945_rt->rt_chbitmask);
-
-        if (rate == -1)
-                iwl3945_rt->rt_rate = 0;
-        else {
-                if (stats->band == IEEE80211_BAND_5GHZ)
-                        rate += IWL_FIRST_OFDM_RATE;
-
-                iwl3945_rt->rt_rate = iwl3945_rates[rate].ieee;
-        }
-
-        /* antenna number */
-        antenna = phy_flags_hw & RX_RES_PHY_FLAGS_ANTENNA_MSK;
-        iwl3945_rt->rt_antenna = le16_to_cpu(antenna) >> 4;
-
-        /* set the preamble flag if we have it */
-        if (phy_flags_hw & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK)
-                iwl3945_rt->rt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
-
-        stats->flag |= RX_FLAG_RADIOTAP;
-}
-
 static void iwl3945_pass_packet_to_mac80211(struct iwl3945_priv *priv,
                                    struct iwl3945_rx_mem_buffer *rxb,
                                    struct ieee80211_rx_status *stats)
@@ -657,9 +564,6 @@ static void iwl3945_pass_packet_to_mac80211(struct iwl3945_priv *priv,
                 iwl3945_set_decrypted_flag(priv, rxb->skb,
                                        le32_to_cpu(rx_end->status), stats);
 
-        if (priv->add_radiotap)
-                iwl3945_add_radiotap(priv, rxb->skb, rx_hdr, stats);
-
 #ifdef CONFIG_IWL3945_LEDS
         if (ieee80211_is_data(hdr->frame_control))
                 priv->rxtxpackets += len;
@@ -684,7 +588,6 @@ static void iwl3945_rx_reply_rx(struct iwl3945_priv *priv,
         u16 rx_stats_noise_diff = le16_to_cpu(rx_stats->noise_diff);
         u8 network_packet;
 
-        rx_status.antenna = 0;
         rx_status.flag = 0;
         rx_status.mactime = le64_to_cpu(rx_end->timestamp);
         rx_status.freq =
@@ -696,6 +599,13 @@ static void iwl3945_rx_reply_rx(struct iwl3945_priv *priv,
         if (rx_status.band == IEEE80211_BAND_5GHZ)
                 rx_status.rate_idx -= IWL_FIRST_OFDM_RATE;
 
+        rx_status.antenna = le16_to_cpu(rx_hdr->phy_flags &
+                                        RX_RES_PHY_FLAGS_ANTENNA_MSK) >> 4;
+
+        /* set the preamble flag if appropriate */
+        if (rx_hdr->phy_flags & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK)
+                rx_status.flag |= RX_FLAG_SHORTPRE;
+
         if ((unlikely(rx_stats->phy_count > 20))) {
                 IWL_DEBUG_DROP
                     ("dsp size out of range [0,20]: "