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| author | Oleksij Rempel <linux@rempel-privat.de> | 2013-05-24 12:05:45 +0200 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2013-05-24 12:07:25 +0200 |
| commit | 786677d100600b7f6089bae0d3967c1b901a6141 (patch) | |
| tree | b6f0538e5bd62e09cc4249493c75dba180052f34 /net/mac80211 | |
| parent | ce85788846ec19dcb7bef0dcbcf83fb64630f426 (diff) | |
| download | op-kernel-dev-786677d100600b7f6089bae0d3967c1b901a6141.zip op-kernel-dev-786677d100600b7f6089bae0d3967c1b901a6141.tar.gz | |
mac80211: add STBC flag for radiotap
Some chips can tell us if received frame was
encoded with STBC or not. To make this information available
in user space we can use updated radiotap specification:
http://www.radiotap.org/defined-fields/MCS
This patch will set number of STBC encoded spatial streams (Nss).
The HAVE_STBC flag should be provided by driver.
Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211')
| -rw-r--r-- | net/mac80211/rx.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index 6e2c8c5..7507f7c 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -258,6 +258,8 @@ ieee80211_add_rx_radiotap_header(struct ieee80211_local *local, pos += 2; if (status->flag & RX_FLAG_HT) { + unsigned int stbc; + rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_MCS); *pos++ = local->hw.radiotap_mcs_details; *pos = 0; @@ -267,6 +269,8 @@ ieee80211_add_rx_radiotap_header(struct ieee80211_local *local, *pos |= IEEE80211_RADIOTAP_MCS_BW_40; if (status->flag & RX_FLAG_HT_GF) *pos |= IEEE80211_RADIOTAP_MCS_FMT_GF; + stbc = (status->flag & RX_FLAG_STBC_MASK) >> RX_FLAG_STBC_SHIFT; + *pos |= stbc << IEEE80211_RADIOTAP_MCS_STBC_SHIFT; pos++; *pos++ = status->rate_idx; } |
