}
}
-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)
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;
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 =
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]: "
}
#endif
-static void iwl_add_radiotap(struct iwl_priv *priv,
- struct sk_buff *skb,
- struct iwl_rx_phy_res *rx_start,
- struct ieee80211_rx_status *stats,
- u32 ampdu_status)
-{
- s8 signal = stats->signal;
- s8 noise = 0;
- int rate = stats->rate_idx;
- u64 tsf = stats->mactime;
- __le16 antenna;
- __le16 phy_flags_hw = rx_start->phy_flags;
- struct iwl4965_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)) *iwl4965_rt;
-
- /* TODO: We won't have enough headroom for HT frames. Fix it later. */
- if (skb_headroom(skb) < sizeof(*iwl4965_rt)) {
- if (net_ratelimit())
- printk(KERN_ERR "not enough headroom [%d] for "
- "radiotap head [%zd]\n",
- skb_headroom(skb), sizeof(*iwl4965_rt));
- return;
- }
-
- /* put radiotap header in front of 802.11 header and data */
- iwl4965_rt = (void *)skb_push(skb, sizeof(*iwl4965_rt));
-
- /* initialise radiotap header */
- iwl4965_rt->rt_hdr.it_version = PKTHDR_RADIOTAP_VERSION;
- iwl4965_rt->rt_hdr.it_pad = 0;
-
- /* total header + data */
- put_unaligned_le16(sizeof(*iwl4965_rt), &iwl4965_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),
- &(iwl4965_rt->rt_hdr.it_present));
-
- /* Zero the flags, we'll add to them as we go */
- iwl4965_rt->rt_flags = 0;
-
- put_unaligned_le64(tsf, &iwl4965_rt->rt_tsf);
-
- iwl4965_rt->rt_dbmsignal = signal;
- iwl4965_rt->rt_dbmnoise = noise;
-
- /* Convert the channel frequency and set the flags */
- put_unaligned(cpu_to_le16(stats->freq), &iwl4965_rt->rt_channelMHz);
- if (!(phy_flags_hw & RX_RES_PHY_FLAGS_BAND_24_MSK))
- put_unaligned_le16(IEEE80211_CHAN_OFDM | IEEE80211_CHAN_5GHZ,
- &iwl4965_rt->rt_chbitmask);
- else if (phy_flags_hw & RX_RES_PHY_FLAGS_MOD_CCK_MSK)
- put_unaligned_le16(IEEE80211_CHAN_CCK | IEEE80211_CHAN_2GHZ,
- &iwl4965_rt->rt_chbitmask);
- else /* 802.11g */
- put_unaligned_le16(IEEE80211_CHAN_OFDM | IEEE80211_CHAN_2GHZ,
- &iwl4965_rt->rt_chbitmask);
-
- if (rate == -1)
- iwl4965_rt->rt_rate = 0;
- else
- iwl4965_rt->rt_rate = iwl_rates[rate].ieee;
-
- /*
- * "antenna number"
- *
- * It seems that the antenna field in the phy flags value
- * is actually a bitfield. This is undefined by radiotap,
- * it wants an actual antenna number but I always get "7"
- * for most legacy frames I receive indicating that the
- * same frame was received on all three RX chains.
- *
- * I think this field should be removed in favour of a
- * new 802.11n radiotap field "RX chains" that is defined
- * as a bitmask.
- */
- antenna = phy_flags_hw & RX_RES_PHY_FLAGS_ANTENNA_MSK;
- iwl4965_rt->rt_antenna = le16_to_cpu(antenna) >> 4;
-
- /* set the preamble flag if appropriate */
- if (phy_flags_hw & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK)
- iwl4965_rt->rt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
-
- stats->flag |= RX_FLAG_RADIOTAP;
-}
-
static void iwl_update_rx_stats(struct iwl_priv *priv, u16 fc, u16 len)
{
/* 0 - mgmt, 1 - cnt, 2 - data */
iwl_set_decrypted_flag(priv, hdr, ampdu_status, stats))
return;
- if (priv->add_radiotap)
- iwl_add_radiotap(priv, rxb->skb, rx_start, stats, ampdu_status);
-
iwl_update_rx_stats(priv, le16_to_cpu(hdr->frame_control), len);
ieee80211_rx_irqsafe(priv->hw, rxb->skb, stats);
priv->alloc_rxb_skb--;
if (rx_status.band == IEEE80211_BAND_5GHZ)
rx_status.rate_idx -= IWL_FIRST_OFDM_RATE;
- rx_status.antenna = 0;
rx_status.flag = 0;
rx_status.flag |= RX_FLAG_TSFT;
rx_status.signal, rx_status.noise, rx_status.signal,
(unsigned long long)rx_status.mactime);
+ /*
+ * "antenna number"
+ *
+ * It seems that the antenna field in the phy flags value
+ * is actually a bitfield. This is undefined by radiotap,
+ * it wants an actual antenna number but I always get "7"
+ * for most legacy frames I receive indicating that the
+ * same frame was received on all three RX chains.
+ *
+ * I think this field should be removed in favour of a
+ * new 802.11n radiotap field "RX chains" that is defined
+ * as a bitmask.
+ */
+ rx_status.antenna = le16_to_cpu(rx_start->phy_flags &
+ RX_RES_PHY_FLAGS_ANTENNA_MSK) >> 4;
+
+ /* set the preamble flag if appropriate */
+ if (rx_start->phy_flags & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK)
+ rx_status.flag |= RX_FLAG_SHORTPRE;
+
/* Take shortcut when only in monitor mode */
if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
iwl_pass_packet_to_mac80211(priv, include_phy,
projects / linux.git / commitdiff