diff options
author | John W. Linville <linville@tuxdriver.com> | 2012-11-21 14:43:51 -0500 |
---|---|---|
committer | John W. Linville <linville@tuxdriver.com> | 2012-11-21 14:43:51 -0500 |
commit | 75c8ec71fb29ed59c4b9bda2f411ed3b09164cf7 (patch) | |
tree | c1dfd91e624b48ccefa71db573d043b639fe088f /net/mac80211/util.c | |
parent | 1e60896fe07307baa5f3ca1a220dfa9792657352 (diff) | |
parent | 77d2ece6fde80631193054edc9c9a3edad519565 (diff) | |
download | op-kernel-dev-75c8ec71fb29ed59c4b9bda2f411ed3b09164cf7.zip op-kernel-dev-75c8ec71fb29ed59c4b9bda2f411ed3b09164cf7.tar.gz |
Merge branch 'for-john' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
Diffstat (limited to 'net/mac80211/util.c')
-rw-r--r-- | net/mac80211/util.c | 76 |
1 files changed, 72 insertions, 4 deletions
diff --git a/net/mac80211/util.c b/net/mac80211/util.c index c4a60bf..9b99916 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -1417,10 +1417,12 @@ int ieee80211_reconfig(struct ieee80211_local *local) } /* add channel contexts */ - mutex_lock(&local->chanctx_mtx); - list_for_each_entry(ctx, &local->chanctx_list, list) - WARN_ON(drv_add_chanctx(local, ctx)); - mutex_unlock(&local->chanctx_mtx); + if (local->use_chanctx) { + mutex_lock(&local->chanctx_mtx); + list_for_each_entry(ctx, &local->chanctx_list, list) + WARN_ON(drv_add_chanctx(local, ctx)); + mutex_unlock(&local->chanctx_mtx); + } list_for_each_entry(sdata, &local->interfaces, list) { struct ieee80211_chanctx_conf *ctx_conf; @@ -1439,6 +1441,21 @@ int ieee80211_reconfig(struct ieee80211_local *local) mutex_unlock(&local->chanctx_mtx); } + sdata = rtnl_dereference(local->monitor_sdata); + if (sdata && local->use_chanctx && ieee80211_sdata_running(sdata)) { + struct ieee80211_chanctx_conf *ctx_conf; + + mutex_lock(&local->chanctx_mtx); + ctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf, + lockdep_is_held(&local->chanctx_mtx)); + if (ctx_conf) { + ctx = container_of(ctx_conf, struct ieee80211_chanctx, + conf); + drv_assign_vif_chanctx(local, sdata, ctx); + } + mutex_unlock(&local->chanctx_mtx); + } + /* add STAs back */ mutex_lock(&local->sta_mtx); list_for_each_entry(sta, &local->sta_list, list) { @@ -2015,3 +2032,54 @@ u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs) return 2; return 1; } + +/** + * ieee80211_calculate_rx_timestamp - calculate timestamp in frame + * @local: mac80211 hw info struct + * @status: RX status + * @mpdu_len: total MPDU length (including FCS) + * @mpdu_offset: offset into MPDU to calculate timestamp at + * + * This function calculates the RX timestamp at the given MPDU offset, taking + * into account what the RX timestamp was. An offset of 0 will just normalize + * the timestamp to TSF at beginning of MPDU reception. + */ +u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, + struct ieee80211_rx_status *status, + unsigned int mpdu_len, + unsigned int mpdu_offset) +{ + u64 ts = status->mactime; + struct rate_info ri; + u16 rate; + + if (WARN_ON(!ieee80211_have_rx_timestamp(status))) + return 0; + + memset(&ri, 0, sizeof(ri)); + + /* Fill cfg80211 rate info */ + if (status->flag & RX_FLAG_HT) { + ri.mcs = status->rate_idx; + ri.flags |= RATE_INFO_FLAGS_MCS; + if (status->flag & RX_FLAG_40MHZ) + ri.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; + if (status->flag & RX_FLAG_SHORT_GI) + ri.flags |= RATE_INFO_FLAGS_SHORT_GI; + } else { + struct ieee80211_supported_band *sband; + + sband = local->hw.wiphy->bands[status->band]; + ri.legacy = sband->bitrates[status->rate_idx].bitrate; + } + + rate = cfg80211_calculate_bitrate(&ri); + + /* rewind from end of MPDU */ + if (status->flag & RX_FLAG_MACTIME_END) + ts -= mpdu_len * 8 * 10 / rate; + + ts += mpdu_offset * 8 * 10 / rate; + + return ts; +} |