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Commit 34e87dad authored by Felix Fietkau's avatar Felix Fietkau
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mac80211: add a patch for keeping track of the rx bitrate of remote stations 

SVN-Revision: 25441
parent 1ede637d
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package/mac80211/patches/540-mac80211_add_rx_rate.patch 0 → 100644
+ 232
− 0
View file @ 34e87dad
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -414,7 +414,7 @@ struct station_parameters {
* @STATION_INFO_PLID: @plid filled
* @STATION_INFO_PLINK_STATE: @plink_state filled
* @STATION_INFO_SIGNAL: @signal filled
- * @STATION_INFO_TX_BITRATE: @tx_bitrate fields are filled
+ * @STATION_INFO_TX_BITRATE: @txrate fields are filled
* (tx_bitrate, tx_bitrate_flags and tx_bitrate_mcs)
* @STATION_INFO_RX_PACKETS: @rx_packets filled
* @STATION_INFO_TX_PACKETS: @tx_packets filled
@@ -422,6 +422,7 @@ struct station_parameters {
* @STATION_INFO_TX_FAILED: @tx_failed filled
* @STATION_INFO_RX_DROP_MISC: @rx_dropped_misc filled
* @STATION_INFO_SIGNAL_AVG: @signal_avg filled
+ * @STATION_INFO_RX_BITRATE: @rxrate fields are filled
*/
enum station_info_flags {
STATION_INFO_INACTIVE_TIME = 1<<0,
@@ -438,6 +439,7 @@ enum station_info_flags {
STATION_INFO_TX_FAILED = 1<<11,
STATION_INFO_RX_DROP_MISC = 1<<12,
STATION_INFO_SIGNAL_AVG = 1<<13,
+ STATION_INFO_RX_BITRATE = 1<<14,
};
/**
@@ -507,6 +509,7 @@ struct station_info {
s8 signal;
s8 signal_avg;
struct rate_info txrate;
+ struct rate_info rxrate;
u32 rx_packets;
u32 tx_packets;
u32 tx_retries;
--- a/include/linux/nl80211.h
+++ b/include/linux/nl80211.h
@@ -1243,6 +1243,8 @@ enum nl80211_rate_info {
* @NL80211_STA_INFO_LLID: the station's mesh LLID
* @NL80211_STA_INFO_PLID: the station's mesh PLID
* @NL80211_STA_INFO_PLINK_STATE: peer link state for the station
+ * @NL80211_STA_INFO_RX_BITRATE: last unicast rx rate, nested attribute
+ * containing info as possible, see &enum nl80211_sta_info_txrate.
* @__NL80211_STA_INFO_AFTER_LAST: internal
* @NL80211_STA_INFO_MAX: highest possible station info attribute
*/
@@ -1261,6 +1263,7 @@ enum nl80211_sta_info {
NL80211_STA_INFO_TX_RETRIES,
NL80211_STA_INFO_TX_FAILED,
NL80211_STA_INFO_SIGNAL_AVG,
+ NL80211_STA_INFO_RX_BITRATE,
/* keep last */
__NL80211_STA_INFO_AFTER_LAST,
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -1968,13 +1968,41 @@ static int parse_station_flags(struct ge
return 0;
}
+static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
+ int attr)
+{
+ struct nlattr *rate;
+ u16 bitrate;
+
+ rate = nla_nest_start(msg, attr);
+ if (!rate)
+ goto nla_put_failure;
+
+ /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
+ bitrate = cfg80211_calculate_bitrate(info);
+ if (bitrate > 0)
+ NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
+
+ if (info->flags & RATE_INFO_FLAGS_MCS)
+ NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS, info->mcs);
+ if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
+ NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
+ if (info->flags & RATE_INFO_FLAGS_SHORT_GI)
+ NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
+
+ nla_nest_end(msg, rate);
+ return true;
+
+nla_put_failure:
+ return false;
+}
+
static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
int flags, struct net_device *dev,
const u8 *mac_addr, struct station_info *sinfo)
{
void *hdr;
- struct nlattr *sinfoattr, *txrate;
- u16 bitrate;
+ struct nlattr *sinfoattr;
hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
if (!hdr)
@@ -2013,24 +2041,14 @@ static int nl80211_send_station(struct s
NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL_AVG,
sinfo->signal_avg);
if (sinfo->filled & STATION_INFO_TX_BITRATE) {
- txrate = nla_nest_start(msg, NL80211_STA_INFO_TX_BITRATE);
- if (!txrate)
+ if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
+ NL80211_STA_INFO_TX_BITRATE))
+ goto nla_put_failure;
+ }
+ if (sinfo->filled & STATION_INFO_RX_BITRATE) {
+ if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
+ NL80211_STA_INFO_RX_BITRATE))
goto nla_put_failure;
-
- /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
- bitrate = cfg80211_calculate_bitrate(&sinfo->txrate);
- if (bitrate > 0)
- NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
-
- if (sinfo->txrate.flags & RATE_INFO_FLAGS_MCS)
- NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS,
- sinfo->txrate.mcs);
- if (sinfo->txrate.flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
- NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
- if (sinfo->txrate.flags & RATE_INFO_FLAGS_SHORT_GI)
- NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
-
- nla_nest_end(msg, txrate);
}
if (sinfo->filled & STATION_INFO_RX_PACKETS)
NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS,
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -209,6 +209,8 @@ enum plink_state {
* @rate_ctrl_priv: rate control private per-STA pointer
* @last_tx_rate: rate used for last transmit, to report to userspace as
* "the" transmit rate
+ * @last_rx_rate_idx: rx status rate index of the last data packet
+ * @last_rx_rate_flag: rx status flag of the last data packet
* @lock: used for locking all fields that require locking, see comments
* in the header file.
* @flaglock: spinlock for flags accesses
@@ -311,6 +313,8 @@ struct sta_info {
unsigned long tx_bytes;
unsigned long tx_fragments;
struct ieee80211_tx_rate last_tx_rate;
+ int last_rx_rate_idx;
+ int last_rx_rate_flag;
u16 tid_seq[IEEE80211_QOS_CTL_TID_MASK + 1];
/*
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1166,14 +1166,23 @@ ieee80211_rx_h_sta_process(struct ieee80
if (rx->sdata->vif.type == NL80211_IFTYPE_ADHOC) {
u8 *bssid = ieee80211_get_bssid(hdr, rx->skb->len,
NL80211_IFTYPE_ADHOC);
- if (compare_ether_addr(bssid, rx->sdata->u.ibss.bssid) == 0)
+ if (compare_ether_addr(bssid, rx->sdata->u.ibss.bssid) == 0) {
sta->last_rx = jiffies;
+ if (ieee80211_is_data(hdr->frame_control)) {
+ sta->last_rx_rate_idx = status->rate_idx;
+ sta->last_rx_rate_flag = status->flag;
+ }
+ }
} else if (!is_multicast_ether_addr(hdr->addr1)) {
/*
* Mesh beacons will update last_rx when if they are found to
* match the current local configuration when processed.
*/
sta->last_rx = jiffies;
+ if (ieee80211_is_data(hdr->frame_control)) {
+ sta->last_rx_rate_idx = status->rate_idx;
+ sta->last_rx_rate_flag = status->flag;
+ }
}
if (!(status->rx_flags & IEEE80211_RX_RA_MATCH))
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -316,6 +316,17 @@ static int ieee80211_config_default_mgmt
return 0;
}
+static void rate_idx_to_bitrate(struct rate_info *rate, struct sta_info *sta, int idx)
+{
+ if (!(rate->flags & RATE_INFO_FLAGS_MCS)) {
+ struct ieee80211_supported_band *sband;
+ sband = sta->local->hw.wiphy->bands[
+ sta->local->hw.conf.channel->band];
+ rate->legacy = sband->bitrates[idx].bitrate;
+ } else
+ rate->mcs = idx;
+}
+
static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
{
struct ieee80211_sub_if_data *sdata = sta->sdata;
@@ -330,6 +341,7 @@ static void sta_set_sinfo(struct sta_inf
STATION_INFO_TX_RETRIES |
STATION_INFO_TX_FAILED |
STATION_INFO_TX_BITRATE |
+ STATION_INFO_RX_BITRATE |
STATION_INFO_RX_DROP_MISC;
sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
@@ -355,15 +367,16 @@ static void sta_set_sinfo(struct sta_inf
sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
if (sta->last_tx_rate.flags & IEEE80211_TX_RC_SHORT_GI)
sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
+ rate_idx_to_bitrate(&sinfo->txrate, sta, sta->last_tx_rate.idx);
- if (!(sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)) {
- struct ieee80211_supported_band *sband;
- sband = sta->local->hw.wiphy->bands[
- sta->local->hw.conf.channel->band];
- sinfo->txrate.legacy =
- sband->bitrates[sta->last_tx_rate.idx].bitrate;
- } else
- sinfo->txrate.mcs = sta->last_tx_rate.idx;
+ sinfo->rxrate.flags = 0;
+ if (sta->last_rx_rate_flag & RX_FLAG_HT)
+ sinfo->rxrate.flags |= RATE_INFO_FLAGS_MCS;
+ 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;
+ rate_idx_to_bitrate(&sinfo->rxrate, sta, sta->last_rx_rate_idx);
if (ieee80211_vif_is_mesh(&sdata->vif)) {
#ifdef CONFIG_MAC80211_MESH
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