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Diffstat (limited to 'net/mac80211/status.c')
-rw-r--r--net/mac80211/status.c232
1 files changed, 195 insertions, 37 deletions
diff --git a/net/mac80211/status.c b/net/mac80211/status.c
index 43439203f4e..ba29ebc8614 100644
--- a/net/mac80211/status.c
+++ b/net/mac80211/status.c
@@ -11,6 +11,7 @@
#include <linux/export.h>
#include <linux/etherdevice.h>
+#include <linux/time.h>
#include <net/mac80211.h>
#include <asm/unaligned.h>
#include "ieee80211_i.h"
@@ -180,6 +181,9 @@ static void ieee80211_frame_acked(struct sta_info *sta, struct sk_buff *skb)
struct ieee80211_local *local = sta->local;
struct ieee80211_sub_if_data *sdata = sta->sdata;
+ if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
+ sta->last_rx = jiffies;
+
if (ieee80211_is_data_qos(mgmt->frame_control)) {
struct ieee80211_hdr *hdr = (void *) skb->data;
u8 *qc = ieee80211_get_qos_ctl(hdr);
@@ -191,29 +195,36 @@ static void ieee80211_frame_acked(struct sta_info *sta, struct sk_buff *skb)
if (ieee80211_is_action(mgmt->frame_control) &&
mgmt->u.action.category == WLAN_CATEGORY_HT &&
mgmt->u.action.u.ht_smps.action == WLAN_HT_ACTION_SMPS &&
- sdata->vif.type == NL80211_IFTYPE_STATION &&
ieee80211_sdata_running(sdata)) {
- /*
- * This update looks racy, but isn't -- if we come
- * here we've definitely got a station that we're
- * talking to, and on a managed interface that can
- * only be the AP. And the only other place updating
- * this variable in managed mode is before association.
- */
+ enum ieee80211_smps_mode smps_mode;
+
switch (mgmt->u.action.u.ht_smps.smps_control) {
case WLAN_HT_SMPS_CONTROL_DYNAMIC:
- sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
+ smps_mode = IEEE80211_SMPS_DYNAMIC;
break;
case WLAN_HT_SMPS_CONTROL_STATIC:
- sdata->smps_mode = IEEE80211_SMPS_STATIC;
+ smps_mode = IEEE80211_SMPS_STATIC;
break;
case WLAN_HT_SMPS_CONTROL_DISABLED:
default: /* shouldn't happen since we don't send that */
- sdata->smps_mode = IEEE80211_SMPS_OFF;
+ smps_mode = IEEE80211_SMPS_OFF;
break;
}
- ieee80211_queue_work(&local->hw, &sdata->recalc_smps);
+ if (sdata->vif.type == NL80211_IFTYPE_STATION) {
+ /*
+ * This update looks racy, but isn't -- if we come
+ * here we've definitely got a station that we're
+ * talking to, and on a managed interface that can
+ * only be the AP. And the only other place updating
+ * this variable in managed mode is before association.
+ */
+ sdata->smps_mode = smps_mode;
+ ieee80211_queue_work(&local->hw, &sdata->recalc_smps);
+ } else if (sdata->vif.type == NL80211_IFTYPE_AP ||
+ sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
+ sta->known_smps_mode = smps_mode;
+ }
}
}
@@ -235,7 +246,8 @@ static int ieee80211_tx_radiotap_len(struct ieee80211_tx_info *info)
/* IEEE80211_RADIOTAP_RATE rate */
if (info->status.rates[0].idx >= 0 &&
- !(info->status.rates[0].flags & IEEE80211_TX_RC_MCS))
+ !(info->status.rates[0].flags & (IEEE80211_TX_RC_MCS |
+ IEEE80211_TX_RC_VHT_MCS)))
len += 2;
/* IEEE80211_RADIOTAP_TX_FLAGS */
@@ -244,17 +256,23 @@ static int ieee80211_tx_radiotap_len(struct ieee80211_tx_info *info)
/* IEEE80211_RADIOTAP_DATA_RETRIES */
len += 1;
- /* IEEE80211_TX_RC_MCS */
- if (info->status.rates[0].idx >= 0 &&
- info->status.rates[0].flags & IEEE80211_TX_RC_MCS)
- len += 3;
+ /* IEEE80211_RADIOTAP_MCS
+ * IEEE80211_RADIOTAP_VHT */
+ if (info->status.rates[0].idx >= 0) {
+ if (info->status.rates[0].flags & IEEE80211_TX_RC_MCS)
+ len += 3;
+ else if (info->status.rates[0].flags & IEEE80211_TX_RC_VHT_MCS)
+ len = ALIGN(len, 2) + 12;
+ }
return len;
}
-static void ieee80211_add_tx_radiotap_header(struct ieee80211_supported_band
- *sband, struct sk_buff *skb,
- int retry_count, int rtap_len)
+static void
+ieee80211_add_tx_radiotap_header(struct ieee80211_local *local,
+ struct ieee80211_supported_band *sband,
+ struct sk_buff *skb, int retry_count,
+ int rtap_len, int shift)
{
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
@@ -279,9 +297,13 @@ static void ieee80211_add_tx_radiotap_header(struct ieee80211_supported_band
/* IEEE80211_RADIOTAP_RATE */
if (info->status.rates[0].idx >= 0 &&
- !(info->status.rates[0].flags & IEEE80211_TX_RC_MCS)) {
+ !(info->status.rates[0].flags & (IEEE80211_TX_RC_MCS |
+ IEEE80211_TX_RC_VHT_MCS))) {
+ u16 rate;
+
rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_RATE);
- *pos = sband->bitrates[info->status.rates[0].idx].bitrate / 5;
+ rate = sband->bitrates[info->status.rates[0].idx].bitrate;
+ *pos = DIV_ROUND_UP(rate, 5 * (1 << shift));
/* padding for tx flags */
pos += 2;
}
@@ -292,10 +314,9 @@ static void ieee80211_add_tx_radiotap_header(struct ieee80211_supported_band
!is_multicast_ether_addr(hdr->addr1))
txflags |= IEEE80211_RADIOTAP_F_TX_FAIL;
- if ((info->status.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) ||
- (info->status.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT))
+ if (info->status.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
txflags |= IEEE80211_RADIOTAP_F_TX_CTS;
- else if (info->status.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS)
+ if (info->status.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS)
txflags |= IEEE80211_RADIOTAP_F_TX_RTS;
put_unaligned_le16(txflags, pos);
@@ -306,9 +327,12 @@ static void ieee80211_add_tx_radiotap_header(struct ieee80211_supported_band
*pos = retry_count;
pos++;
- /* IEEE80211_TX_RC_MCS */
- if (info->status.rates[0].idx >= 0 &&
- info->status.rates[0].flags & IEEE80211_TX_RC_MCS) {
+ if (info->status.rates[0].idx < 0)
+ return;
+
+ /* IEEE80211_RADIOTAP_MCS
+ * IEEE80211_RADIOTAP_VHT */
+ if (info->status.rates[0].flags & IEEE80211_TX_RC_MCS) {
rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_MCS);
pos[0] = IEEE80211_RADIOTAP_MCS_HAVE_MCS |
IEEE80211_RADIOTAP_MCS_HAVE_GI |
@@ -321,8 +345,48 @@ static void ieee80211_add_tx_radiotap_header(struct ieee80211_supported_band
pos[1] |= IEEE80211_RADIOTAP_MCS_FMT_GF;
pos[2] = info->status.rates[0].idx;
pos += 3;
- }
+ } else if (info->status.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
+ u16 known = local->hw.radiotap_vht_details &
+ (IEEE80211_RADIOTAP_VHT_KNOWN_GI |
+ IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH);
+
+ rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_VHT);
+ /* required alignment from rthdr */
+ pos = (u8 *)rthdr + ALIGN(pos - (u8 *)rthdr, 2);
+
+ /* u16 known - IEEE80211_RADIOTAP_VHT_KNOWN_* */
+ put_unaligned_le16(known, pos);
+ pos += 2;
+
+ /* u8 flags - IEEE80211_RADIOTAP_VHT_FLAG_* */
+ if (info->status.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
+ *pos |= IEEE80211_RADIOTAP_VHT_FLAG_SGI;
+ pos++;
+
+ /* u8 bandwidth */
+ if (info->status.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
+ *pos = 1;
+ else if (info->status.rates[0].flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
+ *pos = 4;
+ else if (info->status.rates[0].flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
+ *pos = 11;
+ else /* IEEE80211_TX_RC_{20_MHZ_WIDTH,FIXME:DUP_DATA} */
+ *pos = 0;
+ pos++;
+
+ /* u8 mcs_nss[4] */
+ *pos = (ieee80211_rate_get_vht_mcs(&info->status.rates[0]) << 4) |
+ ieee80211_rate_get_vht_nss(&info->status.rates[0]);
+ pos += 4;
+
+ /* u8 coding */
+ pos++;
+ /* u8 group_id */
+ pos++;
+ /* u16 partial_aid */
+ pos += 2;
+ }
}
static void ieee80211_report_used_skb(struct ieee80211_local *local,
@@ -399,6 +463,76 @@ static void ieee80211_report_used_skb(struct ieee80211_local *local,
}
/*
+ * Measure Tx frame completion and removal time for Tx latency statistics
+ * calculation. A single Tx frame latency should be measured from when it
+ * is entering the Kernel until we receive Tx complete confirmation indication
+ * and remove the skb.
+ */
+static void ieee80211_tx_latency_end_msrmnt(struct ieee80211_local *local,
+ struct sk_buff *skb,
+ struct sta_info *sta,
+ struct ieee80211_hdr *hdr)
+{
+ ktime_t skb_dprt;
+ struct timespec dprt_time;
+ u32 msrmnt;
+ u16 tid;
+ u8 *qc;
+ int i, bin_range_count;
+ u32 *bin_ranges;
+ __le16 fc;
+ struct ieee80211_tx_latency_stat *tx_lat;
+ struct ieee80211_tx_latency_bin_ranges *tx_latency;
+ ktime_t skb_arv = skb->tstamp;
+
+ tx_latency = rcu_dereference(local->tx_latency);
+
+ /* assert Tx latency stats are enabled & frame arrived when enabled */
+ if (!tx_latency || !ktime_to_ns(skb_arv))
+ return;
+
+ fc = hdr->frame_control;
+
+ if (!ieee80211_is_data(fc)) /* make sure it is a data frame */
+ return;
+
+ /* get frame tid */
+ if (ieee80211_is_data_qos(hdr->frame_control)) {
+ qc = ieee80211_get_qos_ctl(hdr);
+ tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
+ } else {
+ tid = 0;
+ }
+
+ tx_lat = &sta->tx_lat[tid];
+
+ ktime_get_ts(&dprt_time); /* time stamp completion time */
+ skb_dprt = ktime_set(dprt_time.tv_sec, dprt_time.tv_nsec);
+ msrmnt = ktime_to_ms(ktime_sub(skb_dprt, skb_arv));
+
+ if (tx_lat->max < msrmnt) /* update stats */
+ tx_lat->max = msrmnt;
+ tx_lat->counter++;
+ tx_lat->sum += msrmnt;
+
+ if (!tx_lat->bins) /* bins not activated */
+ return;
+
+ /* count how many Tx frames transmitted with the appropriate latency */
+ bin_range_count = tx_latency->n_ranges;
+ bin_ranges = tx_latency->ranges;
+
+ for (i = 0; i < bin_range_count; i++) {
+ if (msrmnt <= bin_ranges[i]) {
+ tx_lat->bins[i]++;
+ break;
+ }
+ }
+ if (i == bin_range_count) /* msrmnt is bigger than the biggest range */
+ tx_lat->bins[i]++;
+}
+
+/*
* Use a static threshold for now, best value to be determined
* by testing ...
* Should it depend on:
@@ -407,6 +541,23 @@ static void ieee80211_report_used_skb(struct ieee80211_local *local,
*/
#define STA_LOST_PKT_THRESHOLD 50
+static void ieee80211_lost_packet(struct sta_info *sta, struct sk_buff *skb)
+{
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+
+ /* This packet was aggregated but doesn't carry status info */
+ if ((info->flags & IEEE80211_TX_CTL_AMPDU) &&
+ !(info->flags & IEEE80211_TX_STAT_AMPDU))
+ return;
+
+ if (++sta->lost_packets < STA_LOST_PKT_THRESHOLD)
+ return;
+
+ cfg80211_cqm_pktloss_notify(sta->sdata->dev, sta->sta.addr,
+ sta->lost_packets, GFP_ATOMIC);
+ sta->lost_packets = 0;
+}
+
void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
{
struct sk_buff *skb2;
@@ -424,6 +575,7 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
bool acked;
struct ieee80211_bar *bar;
int rtap_len;
+ int shift = 0;
for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
if ((info->flags & IEEE80211_TX_CTL_AMPDU) &&
@@ -458,6 +610,8 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
if (!ether_addr_equal(hdr->addr2, sta->sdata->vif.addr))
continue;
+ shift = ieee80211_vif_get_shift(&sta->sdata->vif);
+
if (info->flags & IEEE80211_TX_STATUS_EOSP)
clear_sta_flag(sta, WLAN_STA_SP);
@@ -480,6 +634,7 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
sta, true, acked);
if ((local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) &&
+ (ieee80211_is_data(hdr->frame_control)) &&
(rates_idx != -1))
sta->last_tx_rate = info->status.rates[rates_idx];
@@ -542,22 +697,24 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
if (info->flags & IEEE80211_TX_STAT_ACK) {
if (sta->lost_packets)
sta->lost_packets = 0;
- } else if (++sta->lost_packets >= STA_LOST_PKT_THRESHOLD) {
- cfg80211_cqm_pktloss_notify(sta->sdata->dev,
- sta->sta.addr,
- sta->lost_packets,
- GFP_ATOMIC);
- sta->lost_packets = 0;
+ } else {
+ ieee80211_lost_packet(sta, skb);
}
}
if (acked)
sta->last_ack_signal = info->status.ack_signal;
+
+ /*
+ * Measure frame removal for tx latency
+ * statistics calculation
+ */
+ ieee80211_tx_latency_end_msrmnt(local, skb, sta, hdr);
}
rcu_read_unlock();
- ieee80211_led_tx(local, 0);
+ ieee80211_led_tx(local);
/* SNMP counters
* Fragments are passed to low-level drivers as separate skbs, so these
@@ -624,7 +781,8 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
dev_kfree_skb(skb);
return;
}
- ieee80211_add_tx_radiotap_header(sband, skb, retry_count, rtap_len);
+ ieee80211_add_tx_radiotap_header(local, sband, skb, retry_count,
+ rtap_len, shift);
/* XXX: is this sufficient for BPF? */
skb_set_mac_header(skb, 0);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 23:05:28 +0000