diff options
| author | Simon Wunderlich <simon.wunderlich@s2003.tu-chemnitz.de> | 2013-07-08 16:55:51 +0200 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2013-07-16 08:58:04 +0200 |
| commit | 438b61b77082e70d2a408cc77b8c5faac312e940 (patch) | |
| tree | 2a4575f29605a16fc051a6b81c71d0f3b31d7d77 /net/mac80211/ieee80211_i.h | |
| parent | mac80211/rc80211: add chandef to rate initialization (diff) | |
| download | linux-438b61b77082e70d2a408cc77b8c5faac312e940.tar.xz linux-438b61b77082e70d2a408cc77b8c5faac312e940.zip | |
mac80211: fix timing for 5 MHz and 10 MHz channels
according to IEEE 802.11-2012 section 18, various timings change
when using 5 MHz and 10 MHz. Reflect this by using a "shift" when
calculating durations.
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/ieee80211_i.h')
| -rw-r--r-- | net/mac80211/ieee80211_i.h | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 683751a1eceb..338e7ca21ea5 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -812,6 +812,34 @@ ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata) return band; } +static inline int +ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef) +{ + switch (chandef->width) { + case NL80211_CHAN_WIDTH_5: + return 2; + case NL80211_CHAN_WIDTH_10: + return 1; + default: + return 0; + } +} + +static inline int +ieee80211_vif_get_shift(struct ieee80211_vif *vif) +{ + struct ieee80211_chanctx_conf *chanctx_conf; + int shift = 0; + + rcu_read_lock(); + chanctx_conf = rcu_dereference(vif->chanctx_conf); + if (chanctx_conf) + shift = ieee80211_chandef_get_shift(&chanctx_conf->def); + rcu_read_unlock(); + + return shift; +} + enum sdata_queue_type { IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0, IEEE80211_SDATA_QUEUE_AGG_START = 1, @@ -1468,7 +1496,8 @@ extern void *mac80211_wiphy_privid; /* for wiphy privid */ u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, enum nl80211_iftype type); int ieee80211_frame_duration(enum ieee80211_band band, size_t len, - int rate, int erp, int short_preamble); + int rate, int erp, int short_preamble, + int shift); void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx, struct ieee80211_hdr *hdr, const u8 *tsc, gfp_t gfp); |