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mac80211: re-organize the rx rate calculation logic 

Currently the logic to fill a struct rate_info with
a STA's last RX rate is accessible only in the cfg.c.
As the RX rate calculation might be needed elsewhere,
split this out into a separate function.

Signed-off-by: Saravana <saravanad@posedge.com>
[fix various whitespace issues, reword commit log]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Saravana 2012-11-28 18:29:38 +05:30 committed by Johannes Berg
parent 91b8c050b2
commit 003e676af5
2 changed files with 35 additions and 28 deletions
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61
net/mac80211/cfg.c
View File

@ -398,6 +398,38 @@ void sta_set_rate_info_tx(struct sta_info *sta,
rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
}
void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
{
rinfo->flags = 0;
if (sta->last_rx_rate_flag & RX_FLAG_HT) {
rinfo->flags |= RATE_INFO_FLAGS_MCS;
rinfo->mcs = sta->last_rx_rate_idx;
} else if (sta->last_rx_rate_flag & RX_FLAG_VHT) {
rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
rinfo->nss = sta->last_rx_rate_vht_nss;
rinfo->mcs = sta->last_rx_rate_idx;
} else {
struct ieee80211_supported_band *sband;
sband = sta->local->hw.wiphy->bands[
ieee80211_get_sdata_band(sta->sdata)];
rinfo->legacy =
sband->bitrates[sta->last_rx_rate_idx].bitrate;
}
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_flag & RX_FLAG_80MHZ)
rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
if (sta->last_rx_rate_flag & RX_FLAG_80P80MHZ)
rinfo->flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH;
if (sta->last_rx_rate_flag & RX_FLAG_160MHZ)
rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
}
static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
{
struct ieee80211_sub_if_data *sdata = sta->sdata;
@ -444,34 +476,7 @@ static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
}
sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate);
sinfo->rxrate.flags = 0;
if (sta->last_rx_rate_flag & RX_FLAG_HT) {
sinfo->rxrate.flags |= RATE_INFO_FLAGS_MCS;
sinfo->rxrate.mcs = sta->last_rx_rate_idx;
} else if (sta->last_rx_rate_flag & RX_FLAG_VHT) {
sinfo->rxrate.flags |= RATE_INFO_FLAGS_VHT_MCS;
sinfo->rxrate.nss = sta->last_rx_rate_vht_nss;
sinfo->rxrate.mcs = sta->last_rx_rate_idx;
} else {
struct ieee80211_supported_band *sband;
sband = sta->local->hw.wiphy->bands[
ieee80211_get_sdata_band(sta->sdata)];
sinfo->rxrate.legacy =
sband->bitrates[sta->last_rx_rate_idx].bitrate;
}
if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
sinfo->rxrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
sinfo->rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
if (sta->last_rx_rate_flag & RX_FLAG_80MHZ)
sinfo->rxrate.flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
if (sta->last_rx_rate_flag & RX_FLAG_80P80MHZ)
sinfo->rxrate.flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH;
if (sta->last_rx_rate_flag & RX_FLAG_160MHZ)
sinfo->rxrate.flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
sta_set_rate_info_rx(sta, &sinfo->rxrate);
if (ieee80211_vif_is_mesh(&sdata->vif)) {
#ifdef CONFIG_MAC80211_MESH

2
net/mac80211/sta_info.h
View File

@ -554,6 +554,8 @@ int sta_info_flush(struct ieee80211_local *local,
void sta_set_rate_info_tx(struct sta_info *sta,
const struct ieee80211_tx_rate *rate,
struct rate_info *rinfo);
void sta_set_rate_info_rx(struct sta_info *sta,
struct rate_info *rinfo);
void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata,
unsigned long exp_time);