mac80211: add a patch for keeping track of the rx bitrate of remote stations
SVN-Revision: 25441
This commit is contained in:
Felix Fietkau
parent
1ede637d89
commit
34e87dad4d
1 changed files with 232 additions and 0 deletions
232
package/mac80211/patches/540-mac80211_add_rx_rate.patch
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232
package/mac80211/patches/540-mac80211_add_rx_rate.patch
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@ -0,0 +1,232 @@
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--- a/include/net/cfg80211.h
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+++ b/include/net/cfg80211.h
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@@ -414,7 +414,7 @@ struct station_parameters {
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* @STATION_INFO_PLID: @plid filled
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* @STATION_INFO_PLINK_STATE: @plink_state filled
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* @STATION_INFO_SIGNAL: @signal filled
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- * @STATION_INFO_TX_BITRATE: @tx_bitrate fields are filled
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+ * @STATION_INFO_TX_BITRATE: @txrate fields are filled
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* (tx_bitrate, tx_bitrate_flags and tx_bitrate_mcs)
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* @STATION_INFO_RX_PACKETS: @rx_packets filled
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* @STATION_INFO_TX_PACKETS: @tx_packets filled
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@@ -422,6 +422,7 @@ struct station_parameters {
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* @STATION_INFO_TX_FAILED: @tx_failed filled
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* @STATION_INFO_RX_DROP_MISC: @rx_dropped_misc filled
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* @STATION_INFO_SIGNAL_AVG: @signal_avg filled
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+ * @STATION_INFO_RX_BITRATE: @rxrate fields are filled
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*/
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enum station_info_flags {
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STATION_INFO_INACTIVE_TIME = 1<<0,
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@@ -438,6 +439,7 @@ enum station_info_flags {
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STATION_INFO_TX_FAILED = 1<<11,
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STATION_INFO_RX_DROP_MISC = 1<<12,
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STATION_INFO_SIGNAL_AVG = 1<<13,
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+ STATION_INFO_RX_BITRATE = 1<<14,
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};
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/**
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@@ -507,6 +509,7 @@ struct station_info {
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s8 signal;
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s8 signal_avg;
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struct rate_info txrate;
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+ struct rate_info rxrate;
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u32 rx_packets;
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u32 tx_packets;
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u32 tx_retries;
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--- a/include/linux/nl80211.h
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+++ b/include/linux/nl80211.h
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@@ -1243,6 +1243,8 @@ enum nl80211_rate_info {
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* @NL80211_STA_INFO_LLID: the station's mesh LLID
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* @NL80211_STA_INFO_PLID: the station's mesh PLID
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* @NL80211_STA_INFO_PLINK_STATE: peer link state for the station
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+ * @NL80211_STA_INFO_RX_BITRATE: last unicast rx rate, nested attribute
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+ * containing info as possible, see &enum nl80211_sta_info_txrate.
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* @__NL80211_STA_INFO_AFTER_LAST: internal
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* @NL80211_STA_INFO_MAX: highest possible station info attribute
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*/
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@@ -1261,6 +1263,7 @@ enum nl80211_sta_info {
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NL80211_STA_INFO_TX_RETRIES,
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NL80211_STA_INFO_TX_FAILED,
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NL80211_STA_INFO_SIGNAL_AVG,
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+ NL80211_STA_INFO_RX_BITRATE,
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/* keep last */
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__NL80211_STA_INFO_AFTER_LAST,
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--- a/net/wireless/nl80211.c
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+++ b/net/wireless/nl80211.c
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@@ -1968,13 +1968,41 @@ static int parse_station_flags(struct ge
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return 0;
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}
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+static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
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+ int attr)
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+{
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+ struct nlattr *rate;
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+ u16 bitrate;
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+
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+ rate = nla_nest_start(msg, attr);
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+ if (!rate)
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+ goto nla_put_failure;
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+
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+ /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
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+ bitrate = cfg80211_calculate_bitrate(info);
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+ if (bitrate > 0)
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+ NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
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+
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+ if (info->flags & RATE_INFO_FLAGS_MCS)
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+ NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS, info->mcs);
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+ if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
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+ NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
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+ if (info->flags & RATE_INFO_FLAGS_SHORT_GI)
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+ NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
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+
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+ nla_nest_end(msg, rate);
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+ return true;
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+
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+nla_put_failure:
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+ return false;
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+}
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+
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static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
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int flags, struct net_device *dev,
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const u8 *mac_addr, struct station_info *sinfo)
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{
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void *hdr;
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- struct nlattr *sinfoattr, *txrate;
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- u16 bitrate;
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+ struct nlattr *sinfoattr;
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hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
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if (!hdr)
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@@ -2013,24 +2041,14 @@ static int nl80211_send_station(struct s
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NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL_AVG,
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sinfo->signal_avg);
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if (sinfo->filled & STATION_INFO_TX_BITRATE) {
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- txrate = nla_nest_start(msg, NL80211_STA_INFO_TX_BITRATE);
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- if (!txrate)
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+ if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
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+ NL80211_STA_INFO_TX_BITRATE))
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+ goto nla_put_failure;
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+ }
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+ if (sinfo->filled & STATION_INFO_RX_BITRATE) {
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+ if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
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+ NL80211_STA_INFO_RX_BITRATE))
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goto nla_put_failure;
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-
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- /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
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- bitrate = cfg80211_calculate_bitrate(&sinfo->txrate);
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- if (bitrate > 0)
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- NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
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-
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- if (sinfo->txrate.flags & RATE_INFO_FLAGS_MCS)
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- NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS,
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- sinfo->txrate.mcs);
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- if (sinfo->txrate.flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
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- NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
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- if (sinfo->txrate.flags & RATE_INFO_FLAGS_SHORT_GI)
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- NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
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-
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- nla_nest_end(msg, txrate);
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}
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if (sinfo->filled & STATION_INFO_RX_PACKETS)
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NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS,
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--- a/net/mac80211/sta_info.h
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+++ b/net/mac80211/sta_info.h
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@@ -209,6 +209,8 @@ enum plink_state {
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* @rate_ctrl_priv: rate control private per-STA pointer
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* @last_tx_rate: rate used for last transmit, to report to userspace as
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* "the" transmit rate
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+ * @last_rx_rate_idx: rx status rate index of the last data packet
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+ * @last_rx_rate_flag: rx status flag of the last data packet
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* @lock: used for locking all fields that require locking, see comments
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* in the header file.
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* @flaglock: spinlock for flags accesses
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@@ -311,6 +313,8 @@ struct sta_info {
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unsigned long tx_bytes;
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unsigned long tx_fragments;
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struct ieee80211_tx_rate last_tx_rate;
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+ int last_rx_rate_idx;
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+ int last_rx_rate_flag;
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u16 tid_seq[IEEE80211_QOS_CTL_TID_MASK + 1];
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/*
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--- a/net/mac80211/rx.c
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+++ b/net/mac80211/rx.c
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@@ -1166,14 +1166,23 @@ ieee80211_rx_h_sta_process(struct ieee80
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if (rx->sdata->vif.type == NL80211_IFTYPE_ADHOC) {
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u8 *bssid = ieee80211_get_bssid(hdr, rx->skb->len,
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NL80211_IFTYPE_ADHOC);
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- if (compare_ether_addr(bssid, rx->sdata->u.ibss.bssid) == 0)
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+ if (compare_ether_addr(bssid, rx->sdata->u.ibss.bssid) == 0) {
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sta->last_rx = jiffies;
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+ if (ieee80211_is_data(hdr->frame_control)) {
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+ sta->last_rx_rate_idx = status->rate_idx;
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+ sta->last_rx_rate_flag = status->flag;
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+ }
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+ }
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} else if (!is_multicast_ether_addr(hdr->addr1)) {
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/*
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* Mesh beacons will update last_rx when if they are found to
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* match the current local configuration when processed.
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*/
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sta->last_rx = jiffies;
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+ if (ieee80211_is_data(hdr->frame_control)) {
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+ sta->last_rx_rate_idx = status->rate_idx;
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+ sta->last_rx_rate_flag = status->flag;
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+ }
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}
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if (!(status->rx_flags & IEEE80211_RX_RA_MATCH))
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--- a/net/mac80211/cfg.c
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+++ b/net/mac80211/cfg.c
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@@ -316,6 +316,17 @@ static int ieee80211_config_default_mgmt
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return 0;
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}
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+static void rate_idx_to_bitrate(struct rate_info *rate, struct sta_info *sta, int idx)
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+{
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+ if (!(rate->flags & RATE_INFO_FLAGS_MCS)) {
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+ struct ieee80211_supported_band *sband;
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+ sband = sta->local->hw.wiphy->bands[
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+ sta->local->hw.conf.channel->band];
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+ rate->legacy = sband->bitrates[idx].bitrate;
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+ } else
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+ rate->mcs = idx;
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+}
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+
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static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
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{
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struct ieee80211_sub_if_data *sdata = sta->sdata;
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@@ -330,6 +341,7 @@ static void sta_set_sinfo(struct sta_inf
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STATION_INFO_TX_RETRIES |
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STATION_INFO_TX_FAILED |
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STATION_INFO_TX_BITRATE |
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+ STATION_INFO_RX_BITRATE |
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STATION_INFO_RX_DROP_MISC;
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sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
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@@ -355,15 +367,16 @@ static void sta_set_sinfo(struct sta_inf
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sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
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if (sta->last_tx_rate.flags & IEEE80211_TX_RC_SHORT_GI)
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sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
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+ rate_idx_to_bitrate(&sinfo->txrate, sta, sta->last_tx_rate.idx);
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- if (!(sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)) {
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- struct ieee80211_supported_band *sband;
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- sband = sta->local->hw.wiphy->bands[
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- sta->local->hw.conf.channel->band];
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- sinfo->txrate.legacy =
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- sband->bitrates[sta->last_tx_rate.idx].bitrate;
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- } else
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- sinfo->txrate.mcs = sta->last_tx_rate.idx;
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+ sinfo->rxrate.flags = 0;
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+ if (sta->last_rx_rate_flag & RX_FLAG_HT)
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+ sinfo->rxrate.flags |= RATE_INFO_FLAGS_MCS;
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+ if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
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+ sinfo->rxrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
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+ if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
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+ sinfo->rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
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+ rate_idx_to_bitrate(&sinfo->rxrate, sta, sta->last_rx_rate_idx);
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if (ieee80211_vif_is_mesh(&sdata->vif)) {
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#ifdef CONFIG_MAC80211_MESH
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