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cfg80211: change bandwidth reporting to explicit field

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For some reason, we made the bandwidth separate flags, which
is rather confusing - a single rate cannot have different
bandwidths at the same time.

Change this to no longer be flags but use a separate field
for the bandwidth ('bw') instead.

While at it, add support for 5 and 10 MHz rates - these are
reported as regular legacy rates with their real bitrate,
but tagged as 5/10 now to make it easier to distinguish them.

In the nl80211 API, the flags are preserved, but the code
now can also clearly only set a single one of the flags.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2015-01-15 16:14:02 +01:00
parent 97d910d0aa
commit b51f3beecf
8 changed files with 125 additions and 50 deletions
Download patch file Download diff file Expand all files Collapse all files

31
net/mac80211/cfg.c
View file

@ -428,11 +428,13 @@ void sta_set_rate_info_tx(struct sta_info *sta,
rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
}
if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
rinfo->bw = RATE_INFO_BW_40;
else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
rinfo->bw = RATE_INFO_BW_80;
else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
rinfo->bw = RATE_INFO_BW_160;
else
rinfo->bw = RATE_INFO_BW_20;
if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
}
@ -459,14 +461,21 @@ void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
}
if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80MHZ)
rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_160MHZ)
rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
if (sta->last_rx_rate_flag & RX_FLAG_5MHZ)
rinfo->bw = RATE_INFO_BW_5;
else if (sta->last_rx_rate_flag & RX_FLAG_10MHZ)
rinfo->bw = RATE_INFO_BW_10;
else if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
rinfo->bw = RATE_INFO_BW_40;
else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80MHZ)
rinfo->bw = RATE_INFO_BW_80;
else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_160MHZ)
rinfo->bw = RATE_INFO_BW_160;
else
rinfo->bw = RATE_INFO_BW_20;
}
static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,

25
net/mac80211/util.c
View file

@ -2541,7 +2541,9 @@ u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
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;
ri.bw = RATE_INFO_BW_40;
else
ri.bw = RATE_INFO_BW_20;
if (status->flag & RX_FLAG_SHORT_GI)
ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
} else if (status->flag & RX_FLAG_VHT) {
@ -2549,11 +2551,13 @@ u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
ri.mcs = status->rate_idx;
ri.nss = status->vht_nss;
if (status->flag & RX_FLAG_40MHZ)
ri.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
if (status->vht_flag & RX_VHT_FLAG_80MHZ)
ri.flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
if (status->vht_flag & RX_VHT_FLAG_160MHZ)
ri.flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
ri.bw = RATE_INFO_BW_40;
else if (status->vht_flag & RX_VHT_FLAG_80MHZ)
ri.bw = RATE_INFO_BW_80;
else if (status->vht_flag & RX_VHT_FLAG_160MHZ)
ri.bw = RATE_INFO_BW_160;
else
ri.bw = RATE_INFO_BW_20;
if (status->flag & RX_FLAG_SHORT_GI)
ri.flags |= RATE_INFO_FLAGS_SHORT_GI;
} else {
@ -2561,10 +2565,15 @@ u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
int shift = 0;
int bitrate;
if (status->flag & RX_FLAG_10MHZ)
if (status->flag & RX_FLAG_10MHZ) {
shift = 1;
if (status->flag & RX_FLAG_5MHZ)
ri.bw = RATE_INFO_BW_10;
} else if (status->flag & RX_FLAG_5MHZ) {
shift = 2;
ri.bw = RATE_INFO_BW_5;
} else {
ri.bw = RATE_INFO_BW_20;
}
sband = local->hw.wiphy->bands[status->band];
bitrate = sband->bitrates[status->rate_idx].bitrate;