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authorSimon Wunderlich <simon.wunderlich@s2003.tu-chemnitz.de>2013-07-08 16:55:52 +0200
committerJohannes Berg <johannes.berg@intel.com>2013-07-16 09:58:05 +0300
commita5e70697d0c4836e69c60de92db27eac9ae71e05 (patch)
treea4af8f2f829b505a2e78aafb2aa9663e25709b7b /net/mac80211
parent438b61b77082e70d2a408cc77b8c5faac312e940 (diff)
downloadop-kernel-dev-a5e70697d0c4836e69c60de92db27eac9ae71e05.zip
op-kernel-dev-a5e70697d0c4836e69c60de92db27eac9ae71e05.tar.gz
mac80211: add radiotap flag and handling for 5/10 MHz
Wireshark already defines radiotap channel flags for 5 and 10 MHz, so just use them in Linux radiotap too. Furthermore, add rx status flags to allow drivers to report when they received data on 5 or 10 MHz channels. Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: Mathias Kretschmer <mathias.kretschmer@fokus.fraunhofer.de> Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Diffstat (limited to 'net/mac80211')
-rw-r--r--net/mac80211/rx.c21
1 files changed, 12 insertions, 9 deletions
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index c9f2ca4..deeeca1 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -159,6 +159,7 @@ ieee80211_add_rx_radiotap_header(struct ieee80211_local *local,
__le32 *it_present;
u32 it_present_val;
u16 rx_flags = 0;
+ u16 channel_flags = 0;
int mpdulen, chain;
unsigned long chains = status->chains;
@@ -243,20 +244,22 @@ ieee80211_add_rx_radiotap_header(struct ieee80211_local *local,
/* IEEE80211_RADIOTAP_CHANNEL */
put_unaligned_le16(status->freq, pos);
pos += 2;
+ if (status->flag & RX_FLAG_10MHZ)
+ channel_flags |= IEEE80211_CHAN_HALF;
+ else if (status->flag & RX_FLAG_5MHZ)
+ channel_flags |= IEEE80211_CHAN_QUARTER;
+
if (status->band == IEEE80211_BAND_5GHZ)
- put_unaligned_le16(IEEE80211_CHAN_OFDM | IEEE80211_CHAN_5GHZ,
- pos);
+ channel_flags |= IEEE80211_CHAN_OFDM | IEEE80211_CHAN_5GHZ;
else if (status->flag & (RX_FLAG_HT | RX_FLAG_VHT))
- put_unaligned_le16(IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ,
- pos);
+ channel_flags |= IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ;
else if (rate && rate->flags & IEEE80211_RATE_ERP_G)
- put_unaligned_le16(IEEE80211_CHAN_OFDM | IEEE80211_CHAN_2GHZ,
- pos);
+ channel_flags |= IEEE80211_CHAN_OFDM | IEEE80211_CHAN_2GHZ;
else if (rate)
- put_unaligned_le16(IEEE80211_CHAN_CCK | IEEE80211_CHAN_2GHZ,
- pos);
+ channel_flags |= IEEE80211_CHAN_OFDM | IEEE80211_CHAN_2GHZ;
else
- put_unaligned_le16(IEEE80211_CHAN_2GHZ, pos);
+ channel_flags |= IEEE80211_CHAN_2GHZ;
+ put_unaligned_le16(channel_flags, pos);
pos += 2;
/* IEEE80211_RADIOTAP_DBM_ANTSIGNAL */
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