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-rw-r--r--net/mac80211/ieee80211_i.h8
-rw-r--r--net/mac80211/main.c54
-rw-r--r--net/mac80211/mesh_hwmp.c6
-rw-r--r--net/mac80211/rate.c52
-rw-r--r--net/mac80211/rate.h5
-rw-r--r--net/mac80211/rc80211_minstrel.c72
-rw-r--r--net/mac80211/rc80211_pid.h1
-rw-r--r--net/mac80211/rc80211_pid_algo.c27
-rw-r--r--net/mac80211/rc80211_pid_debugfs.c5
-rw-r--r--net/mac80211/sta_info.h4
-rw-r--r--net/mac80211/tx.c378
-rw-r--r--net/mac80211/wext.c4
12 files changed, 306 insertions, 310 deletions
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 6f8756d26a9..fe4efdd4253 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -142,7 +142,6 @@ typedef unsigned __bitwise__ ieee80211_tx_result;
#define IEEE80211_TX_FRAGMENTED BIT(0)
#define IEEE80211_TX_UNICAST BIT(1)
#define IEEE80211_TX_PS_BUFFERED BIT(2)
-#define IEEE80211_TX_PROBE_LAST_FRAG BIT(3)
struct ieee80211_tx_data {
struct sk_buff *skb;
@@ -153,11 +152,6 @@ struct ieee80211_tx_data {
struct ieee80211_key *key;
struct ieee80211_channel *channel;
- s8 rate_idx;
- /* use this rate (if set) for last fragment; rate can
- * be set to lower rate for the first fragments, e.g.,
- * when using CTS protection with IEEE 802.11g. */
- s8 last_frag_rate_idx;
/* Extra fragments (in addition to the first fragment
* in skb) */
@@ -203,9 +197,7 @@ struct ieee80211_rx_data {
struct ieee80211_tx_stored_packet {
struct sk_buff *skb;
struct sk_buff **extra_frag;
- s8 last_frag_rate_idx;
int num_extra_frag;
- bool last_frag_rate_ctrl_probe;
};
struct beacon_data {
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index ffff54944f9..88c1975a97a 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -41,6 +41,8 @@
*/
struct ieee80211_tx_status_rtap_hdr {
struct ieee80211_radiotap_header hdr;
+ u8 rate;
+ u8 padding_for_rate;
__le16 tx_flags;
u8 data_retries;
} __attribute__ ((packed));
@@ -465,13 +467,28 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
struct ieee80211_sub_if_data *sdata;
struct net_device *prev_dev = NULL;
struct sta_info *sta;
+ int retry_count = -1, i;
+
+ for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
+ /* the HW cannot have attempted that rate */
+ if (i >= hw->max_rates) {
+ info->status.rates[i].idx = -1;
+ info->status.rates[i].count = 0;
+ }
+
+ retry_count += info->status.rates[i].count;
+ }
+ if (retry_count < 0)
+ retry_count = 0;
rcu_read_lock();
+ sband = local->hw.wiphy->bands[info->band];
+
sta = sta_info_get(local, hdr->addr1);
if (sta) {
- if (info->status.excessive_retries &&
+ if (!(info->flags & IEEE80211_TX_STAT_ACK) &&
test_sta_flags(sta, WLAN_STA_PS)) {
/*
* The STA is in power save mode, so assume
@@ -502,12 +519,11 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
rcu_read_unlock();
return;
} else {
- if (info->status.excessive_retries)
+ if (!(info->flags & IEEE80211_TX_STAT_ACK))
sta->tx_retry_failed++;
- sta->tx_retry_count += info->status.retry_count;
+ sta->tx_retry_count += retry_count;
}
- sband = local->hw.wiphy->bands[info->band];
rate_control_tx_status(local, sband, sta, skb);
}
@@ -528,9 +544,9 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
local->dot11TransmittedFrameCount++;
if (is_multicast_ether_addr(hdr->addr1))
local->dot11MulticastTransmittedFrameCount++;
- if (info->status.retry_count > 0)
+ if (retry_count > 0)
local->dot11RetryCount++;
- if (info->status.retry_count > 1)
+ if (retry_count > 1)
local->dot11MultipleRetryCount++;
}
@@ -574,19 +590,30 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr));
rthdr->hdr.it_present =
cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) |
- (1 << IEEE80211_RADIOTAP_DATA_RETRIES));
+ (1 << IEEE80211_RADIOTAP_DATA_RETRIES) |
+ (1 << IEEE80211_RADIOTAP_RATE));
if (!(info->flags & IEEE80211_TX_STAT_ACK) &&
!is_multicast_ether_addr(hdr->addr1))
rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL);
- if ((info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) &&
- (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT))
+ /*
+ * XXX: Once radiotap gets the bitmap reset thing the vendor
+ * extensions proposal contains, we can actually report
+ * the whole set of tries we did.
+ */
+ if ((info->status.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) ||
+ (info->status.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT))
rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS);
- else if (info->flags & IEEE80211_TX_CTL_USE_RTS_CTS)
+ else if (info->status.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS)
rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS);
+ if (info->status.rates[0].idx >= 0 &&
+ !(info->status.rates[0].flags & IEEE80211_TX_RC_MCS))
+ rthdr->rate = sband->bitrates[
+ info->status.rates[0].idx].bitrate / 5;
- rthdr->data_retries = info->status.retry_count;
+ /* for now report the total retry_count */
+ rthdr->data_retries = retry_count;
/* XXX: is this sufficient for BPF? */
skb_set_mac_header(skb, 0);
@@ -671,8 +698,9 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
BUG_ON(!ops->configure_filter);
local->ops = ops;
- local->hw.queues = 1; /* default */
-
+ /* set up some defaults */
+ local->hw.queues = 1;
+ local->hw.max_rates = 1;
local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
local->hw.conf.long_frame_max_tx_count = 4;
diff --git a/net/mac80211/mesh_hwmp.c b/net/mac80211/mesh_hwmp.c
index 501c7831adb..e8d573d592e 100644
--- a/net/mac80211/mesh_hwmp.c
+++ b/net/mac80211/mesh_hwmp.c
@@ -218,12 +218,16 @@ static u32 airtime_link_metric_get(struct ieee80211_local *local,
if (sta->fail_avg >= 100)
return MAX_METRIC;
+
+ if (sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)
+ return MAX_METRIC;
+
err = (sta->fail_avg << ARITH_SHIFT) / 100;
/* bitrate is in units of 100 Kbps, while we need rate in units of
* 1Mbps. This will be corrected on tx_time computation.
*/
- rate = sband->bitrates[sta->last_txrate_idx].bitrate;
+ rate = sband->bitrates[sta->last_tx_rate.idx].bitrate;
tx_time = (device_constant + 10 * test_frame_len / rate);
estimated_retx = ((1 << (2 * ARITH_SHIFT)) / (s_unit - err));
result = (tx_time * estimated_retx) >> (2 * ARITH_SHIFT) ;
diff --git a/net/mac80211/rate.c b/net/mac80211/rate.c
index 5d786720d93..3fa7ab28506 100644
--- a/net/mac80211/rate.c
+++ b/net/mac80211/rate.c
@@ -199,48 +199,44 @@ static void rate_control_release(struct kref *kref)
}
void rate_control_get_rate(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_supported_band *sband,
- struct sta_info *sta, struct sk_buff *skb,
- struct rate_selection *sel)
+ struct sta_info *sta,
+ struct ieee80211_tx_rate_control *txrc)
{
struct rate_control_ref *ref = sdata->local->rate_ctrl;
void *priv_sta = NULL;
struct ieee80211_sta *ista = NULL;
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(txrc->skb);
int i;
- sel->rate_idx = -1;
- sel->nonerp_idx = -1;
- sel->probe_idx = -1;
- sel->max_rate_idx = sdata->max_ratectrl_rateidx;
-
if (sta) {
ista = &sta->sta;
priv_sta = sta->rate_ctrl_priv;
}
+ for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
+ info->control.rates[i].idx = -1;
+ info->control.rates[i].flags = 0;
+ info->control.rates[i].count = 1;
+ }
+
if (sta && sdata->force_unicast_rateidx > -1)
- sel->rate_idx = sdata->force_unicast_rateidx;
+ info->control.rates[0].idx = sdata->force_unicast_rateidx;
else
- ref->ops->get_rate(ref->priv, sband, ista, priv_sta, skb, sel);
-
- if (sdata->max_ratectrl_rateidx > -1 &&
- sel->rate_idx > sdata->max_ratectrl_rateidx)
- sel->rate_idx = sdata->max_ratectrl_rateidx;
-
- BUG_ON(sel->rate_idx < 0);
-
- /* Select a non-ERP backup rate. */
- if (sel->nonerp_idx < 0) {
- for (i = 0; i < sband->n_bitrates; i++) {
- struct ieee80211_rate *rate = &sband->bitrates[i];
- if (sband->bitrates[sel->rate_idx].bitrate < rate->bitrate)
- break;
-
- if (rate_supported(ista, sband->band, i) &&
- !(rate->flags & IEEE80211_RATE_ERP_G))
- sel->nonerp_idx = i;
- }
+ ref->ops->get_rate(ref->priv, ista, priv_sta, txrc);
+
+ /*
+ * try to enforce the maximum rate the user wanted
+ */
+ if (sdata->max_ratectrl_rateidx > -1)
+ for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
+ if (info->control.rates[i].flags & IEEE80211_TX_RC_MCS)
+ continue;
+ info->control.rates[i].idx =
+ min_t(s8, info->control.rates[i].idx,
+ sdata->max_ratectrl_rateidx);
}
+
+ BUG_ON(info->control.rates[0].idx < 0);
}
struct rate_control_ref *rate_control_get(struct rate_control_ref *ref)
diff --git a/net/mac80211/rate.h b/net/mac80211/rate.h
index d0092f847f8..7c25edf9ac5 100644
--- a/net/mac80211/rate.h
+++ b/net/mac80211/rate.h
@@ -31,9 +31,8 @@ struct rate_control_ref {
struct rate_control_ref *rate_control_alloc(const char *name,
struct ieee80211_local *local);
void rate_control_get_rate(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_supported_band *sband,
- struct sta_info *sta, struct sk_buff *skb,
- struct rate_selection *sel);
+ struct sta_info *sta,
+ struct ieee80211_tx_rate_control *txrc);
struct rate_control_ref *rate_control_get(struct rate_control_ref *ref);
void rate_control_put(struct rate_control_ref *ref);
diff --git a/net/mac80211/rc80211_minstrel.c b/net/mac80211/rc80211_minstrel.c
index f6d69dab07a..759ddd8bf0f 100644
--- a/net/mac80211/rc80211_minstrel.c
+++ b/net/mac80211/rc80211_minstrel.c
@@ -169,30 +169,20 @@ minstrel_tx_status(void *priv, struct ieee80211_supported_band *sband,
{
struct minstrel_sta_info *mi = priv_sta;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
- struct ieee80211_tx_altrate *ar = info->status.retries;
- struct minstrel_priv *mp = priv;
- int i, ndx, tries;
- int success = 0;
+ struct ieee80211_tx_rate *ar = info->status.rates;
+ int i, ndx;
+ int success;
- if (!info->status.excessive_retries)
- success = 1;
+ success = !!(info->flags & IEEE80211_TX_STAT_ACK);
- if (!mp->has_mrr || (ar[0].rate_idx < 0)) {
- ndx = rix_to_ndx(mi, info->tx_rate_idx);
- tries = info->status.retry_count + 1;
- mi->r[ndx].success += success;
- mi->r[ndx].attempts += tries;
- return;
- }
-
- for (i = 0; i < 4; i++) {
- if (ar[i].rate_idx < 0)
+ for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
+ if (ar[i].idx < 0)
break;
- ndx = rix_to_ndx(mi, ar[i].rate_idx);
- mi->r[ndx].attempts += ar[i].limit + 1;
+ ndx = rix_to_ndx(mi, ar[i].idx);
+ mi->r[ndx].attempts += ar[i].count;
- if ((i != 3) && (ar[i + 1].rate_idx < 0))
+ if ((i != IEEE80211_TX_MAX_RATES - 1) && (ar[i + 1].idx < 0))
mi->r[ndx].success += success;
}
@@ -210,9 +200,9 @@ minstrel_get_retry_count(struct minstrel_rate *mr,
{
unsigned int retry = mr->adjusted_retry_count;
- if (info->flags & IEEE80211_TX_CTL_USE_RTS_CTS)
+ if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS)
retry = max(2U, min(mr->retry_count_rtscts, retry));
- else if (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT)
+ else if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
retry = max(2U, min(mr->retry_count_cts, retry));
return retry;
}
@@ -234,14 +224,15 @@ minstrel_get_next_sample(struct minstrel_sta_info *mi)
}
void
-minstrel_get_rate(void *priv, struct ieee80211_supported_band *sband,
- struct ieee80211_sta *sta, void *priv_sta,
- struct sk_buff *skb, struct rate_selection *sel)
+minstrel_get_rate(void *priv, struct ieee80211_sta *sta,
+ void *priv_sta, struct ieee80211_tx_rate_control *txrc)
{
+ struct sk_buff *skb = txrc->skb;
+ struct ieee80211_supported_band *sband = txrc->sband;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct minstrel_sta_info *mi = priv_sta;
struct minstrel_priv *mp = priv;
- struct ieee80211_tx_altrate *ar = info->control.retries;
+ struct ieee80211_tx_rate *ar = info->control.rates;
unsigned int ndx, sample_ndx = 0;
bool mrr;
bool sample_slower = false;
@@ -251,16 +242,12 @@ minstrel_get_rate(void *priv, struct ieee80211_supported_band *sband,
int sample_rate;
if (!sta || !mi || use_low_rate(skb)) {
- sel->rate_idx = rate_lowest_index(sband, sta);
+ ar[0].idx = rate_lowest_index(sband, sta);
+ ar[0].count = mp->max_retry;
return;
}
- mrr = mp->has_mrr;
-
- /* mac80211 does not allow mrr for RTS/CTS */
- if ((info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) ||
- (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT))
- mrr = false;
+ mrr = mp->has_mrr && !txrc->rts && !txrc->bss_conf->use_cts_prot;
if (time_after(jiffies, mi->stats_update + (mp->update_interval *
HZ) / 1000))
@@ -315,13 +302,12 @@ minstrel_get_rate(void *priv, struct ieee80211_supported_band *sband,
mi->sample_deferred++;
}
}
- sel->rate_idx = mi->r[ndx].rix;
- info->control.retry_limit = minstrel_get_retry_count(&mi->r[ndx], info);
+ ar[0].idx = mi->r[ndx].rix;
+ ar[0].count = minstrel_get_retry_count(&mi->r[ndx], info);
if (!mrr) {
- ar[0].rate_idx = mi->lowest_rix;
- ar[0].limit = mp->max_retry;
- ar[1].rate_idx = -1;
+ ar[1].idx = mi->lowest_rix;
+ ar[1].count = mp->max_retry;
return;
}
@@ -336,9 +322,9 @@ minstrel_get_rate(void *priv, struct ieee80211_supported_band *sband,
}
mrr_ndx[1] = mi->max_prob_rate;
mrr_ndx[2] = 0;
- for (i = 0; i < 3; i++) {
- ar[i].rate_idx = mi->r[mrr_ndx[i]].rix;
- ar[i].limit = mi->r[mrr_ndx[i]].adjusted_retry_count;
+ for (i = 1; i < 4; i++) {
+ ar[i].idx = mi->r[mrr_ndx[i - 1]].rix;
+ ar[i].count = mi->r[mrr_ndx[i - 1]].adjusted_retry_count;
}
}
@@ -532,13 +518,13 @@ minstrel_alloc(struct ieee80211_hw *hw, struct dentry *debugfsdir)
/* maximum time that the hw is allowed to stay in one MRR segment */
mp->segment_size = 6000;
- if (hw->max_altrate_tries > 0)
- mp->max_retry = hw->max_altrate_tries;
+ if (hw->max_rate_tries > 0)
+ mp->max_retry = hw->max_rate_tries;
else
/* safe default, does not necessarily have to match hw properties */
mp->max_retry = 7;
- if (hw->max_altrates >= 3)
+ if (hw->max_rates >= 4)
mp->has_mrr = true;
mp->hw = hw;
diff --git a/net/mac80211/rc80211_pid.h b/net/mac80211/rc80211_pid.h
index ce099ea1d5d..1a873f00691 100644
--- a/net/mac80211/rc80211_pid.h
+++ b/net/mac80211/rc80211_pid.h
@@ -61,6 +61,7 @@ enum rc_pid_event_type {
union rc_pid_event_data {
/* RC_PID_EVENT_TX_STATUS */
struct {
+ u32 flags;
struct ieee80211_tx_info tx_status;
};
/* RC_PID_EVENT_TYPE_RATE_CHANGE */
diff --git a/net/mac80211/rc80211_pid_algo.c b/net/mac80211/rc80211_pid_algo.c
index 86eb374e3b8..92caecfcee7 100644
--- a/net/mac80211/rc80211_pid_algo.c
+++ b/net/mac80211/rc80211_pid_algo.c
@@ -241,7 +241,7 @@ static void rate_control_pid_tx_status(void *priv, struct ieee80211_supported_ba
/* Ignore all frames that were sent with a different rate than the rate
* we currently advise mac80211 to use. */
- if (info->tx_rate_idx != spinfo->txrate_idx)
+ if (info->status.rates[0].idx != spinfo->txrate_idx)
return;
spinfo->tx_num_xmit++;
@@ -253,10 +253,10 @@ static void rate_control_pid_tx_status(void *priv, struct ieee80211_supported_ba
/* We count frames that totally failed to be transmitted as two bad
* frames, those that made it out but had some retries as one good and
* one bad frame. */
- if (info->status.excessive_retries) {
+ if (!(info->flags & IEEE80211_TX_STAT_ACK)) {
spinfo->tx_num_failed += 2;
spinfo->tx_num_xmit++;
- } else if (info->status.retry_count) {
+ } else if (info->status.rates[0].count) {
spinfo->tx_num_failed++;
spinfo->tx_num_xmit++;
}
@@ -270,23 +270,32 @@ static void rate_control_pid_tx_status(void *priv, struct ieee80211_supported_ba
}
static void
-rate_control_pid_get_rate(void *priv, struct ieee80211_supported_band *sband,
- struct ieee80211_sta *sta, void *priv_sta,
- struct sk_buff *skb,
- struct rate_selection *sel)
+rate_control_pid_get_rate(void *priv, struct ieee80211_sta *sta,
+ void *priv_sta,
+ struct ieee80211_tx_rate_control *txrc)
{
+ struct sk_buff *skb = txrc->skb;
+ struct ieee80211_supported_band *sband = txrc->sband;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct rc_pid_sta_info *spinfo = priv_sta;
int rateidx;
u16 fc;
+ if (txrc->rts)
+ info->control.rates[0].count =
+ txrc->hw->conf.long_frame_max_tx_count;
+ else
+ info->control.rates[0].count =
+ txrc->hw->conf.short_frame_max_tx_count;
+
/* Send management frames and broadcast/multicast data using lowest
* rate. */
fc = le16_to_cpu(hdr->frame_control);
if (!sta || !spinfo ||
(fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA ||
is_multicast_ether_addr(hdr->addr1)) {
- sel->rate_idx = rate_lowest_index(sband, sta);
+ info->control.rates[0].idx = rate_lowest_index(sband, sta);
return;
}
@@ -295,7 +304,7 @@ rate_control_pid_get_rate(void *priv, struct ieee80211_supported_band *sband,
if (rateidx >= sband->n_bitrates)
rateidx = sband->n_bitrates - 1;
- sel->rate_idx = rateidx;
+ info->control.rates[0].idx = rateidx;
#ifdef CONFIG_MAC80211_DEBUGFS
rate_control_pid_event_tx_rate(&spinfo->events,
diff --git a/net/mac80211/rc80211_pid_debugfs.c b/net/mac80211/rc80211_pid_debugfs.c
index 8121d3bc683..a08a9b53034 100644
--- a/net/mac80211/rc80211_pid_debugfs.c
+++ b/net/mac80211/rc80211_pid_debugfs.c
@@ -43,6 +43,7 @@ void rate_control_pid_event_tx_status(struct rc_pid_event_buffer *buf,
{
union rc_pid_event_data evd;
+ evd.flags = stat->flags;
memcpy(&evd.tx_status, stat, sizeof(struct ieee80211_tx_info));
rate_control_pid_event(buf, RC_PID_EVENT_TYPE_TX_STATUS, &evd);
}
@@ -167,8 +168,8 @@ static ssize_t rate_control_pid_events_read(struct file *file, char __user *buf,
switch (ev->type) {
case RC_PID_EVENT_TYPE_TX_STATUS:
p += snprintf(pb + p, length - p, "tx_status %u %u",
- ev->data.tx_status.status.excessive_retries,
- ev->data.tx_status.status.retry_count);
+ !(ev->data.flags & IEEE80211_TX_STAT_ACK),
+ ev->data.tx_status.status.rates[0].idx);
break;
case RC_PID_EVENT_TYPE_RATE_CHANGE:
p += snprintf(pb + p, length - p, "rate_change %d %d",
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index 168a39a298b..4ac372aa75c 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -196,7 +196,7 @@ struct sta_ampdu_mlme {
* @tx_packets: number of RX/TX MSDUs
* @tx_bytes: TBD
* @tx_fragments: number of transmitted MPDUs
- * @last_txrate_idx: Index of the last used transmit rate
+ * @last_txrate: description of the last used transmit rate
* @tid_seq: TBD
* @ampdu_mlme: TBD
* @timer_to_tid: identity mapping to ID timers
@@ -267,7 +267,7 @@ struct sta_info {
unsigned long tx_packets;
unsigned long tx_bytes;
unsigned long tx_fragments;
- unsigned int last_txrate_idx;
+ struct ieee80211_tx_rate last_tx_rate;
u16 tid_seq[IEEE80211_QOS_CTL_TID_MASK + 1];
/*
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 6f3e4be9763..21951bac1ef 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -46,13 +46,20 @@ static __le16 ieee80211_duration(struct ieee80211_tx_data *tx, int group_addr,
struct ieee80211_local *local = tx->local;
struct ieee80211_supported_band *sband;
struct ieee80211_hdr *hdr;
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx->skb);
+
+ /* assume HW handles this */
+ if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
+ return 0;
+
+ /* uh huh? */
+ if (WARN_ON_ONCE(info->control.rates[0].idx < 0))
+ return 0;
sband = local->hw.wiphy->bands[tx->channel->band];
- txrate = &sband->bitrates[tx->rate_idx];
+ txrate = &sband->bitrates[info->control.rates[0].idx];
- erp = 0;
- if (tx->sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)
- erp = txrate->flags & IEEE80211_RATE_ERP_G;
+ erp = txrate->flags & IEEE80211_RATE_ERP_G;
/*
* data and mgmt (except PS Poll):
@@ -437,140 +444,154 @@ ieee80211_tx_h_select_key(struct ieee80211_tx_data *tx)
static ieee80211_tx_result debug_noinline
ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx)
{
- struct rate_selection rsel;
- struct ieee80211_supported_band *sband;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx->skb);
+ struct ieee80211_hdr *hdr = (void *)tx->skb->data;
+ struct ieee80211_supported_band *sband;
+ struct ieee80211_rate *rate;
+ int i, len;
+ bool inval = false, rts = false, short_preamble = false;
+ struct ieee80211_tx_rate_control txrc;
- sband = tx->local->hw.wiphy->bands[tx->channel->band];
+ memset(&txrc, 0, sizeof(txrc));
- if (likely(tx->rate_idx < 0)) {
- rate_control_get_rate(tx->sdata, sband, tx->sta,
- tx->skb, &rsel);
- if (tx->sta)
- tx->sta->last_txrate_idx = rsel.rate_idx;
- tx->rate_idx = rsel.rate_idx;
- if (unlikely(rsel.probe_idx >= 0)) {
- info->flags |= IEEE80211_TX_CTL_RATE_CTRL_PROBE;
- tx->flags |= IEEE80211_TX_PROBE_LAST_FRAG;
- info->control.retries[0].rate_idx = tx->rate_idx;
- info->control.retries[0].limit = tx->local->hw.max_altrate_tries;
- tx->rate_idx = rsel.probe_idx;
- } else if (info->control.retries[0].limit == 0)
- info->control.retries[0].rate_idx = -1;
-
- if (unlikely(tx->rate_idx < 0))
- return TX_DROP;
- } else
- info->control.retries[0].rate_idx = -1;
+ sband = tx->local->hw.wiphy->bands[tx->channel->band];
- if (tx->sdata->vif.bss_conf.use_cts_prot &&
- (tx->flags & IEEE80211_TX_FRAGMENTED) && (rsel.nonerp_idx >= 0)) {
- tx->last_frag_rate_idx = tx->rate_idx;
- if (rsel.probe_idx >= 0)
- tx->flags &= ~IEEE80211_TX_PROBE_LAST_FRAG;
- else
- tx->flags |= IEEE80211_TX_PROBE_LAST_FRAG;
- tx->rate_idx = rsel.nonerp_idx;
- info->tx_rate_idx = rsel.nonerp_idx;
- info->flags &= ~IEEE80211_TX_CTL_RATE_CTRL_PROBE;
- } else {
- tx->last_frag_rate_idx = tx->rate_idx;
- info->tx_rate_idx = tx->rate_idx;
+ len = min_t(int, tx->skb->len + FCS_LEN,
+ tx->local->fragmentation_threshold);
+
+ /* set up the tx rate control struct we give the RC algo */
+ txrc.hw = local_to_hw(tx->local);
+ txrc.sband = sband;
+ txrc.bss_conf = &tx->sdata->vif.bss_conf;
+ txrc.skb = tx->skb;
+ txrc.reported_rate.idx = -1;
+ txrc.max_rate_idx = tx->sdata->max_ratectrl_rateidx;
+
+ /* set up RTS protection if desired */
+ if (tx->local->rts_threshold < IEEE80211_MAX_RTS_THRESHOLD &&
+ len > tx->local->rts_threshold) {
+ txrc.rts = rts = true;
}
- info->tx_rate_idx = tx->rate_idx;
- return TX_CONTINUE;
-}
+ /*
+ * Use short preamble if the BSS can handle it, but not for
+ * management frames unless we know the receiver can handle
+ * that -- the management frame might be to a station that
+ * just wants a probe response.
+ */
+ if (tx->sdata->vif.bss_conf.use_short_preamble &&
+ (ieee80211_is_data(hdr->frame_control) ||
+ (tx->sta && test_sta_flags(tx->sta, WLAN_STA_SHORT_PREAMBLE))))
+ txrc.short_preamble = short_preamble = true;
-static ieee80211_tx_result debug_noinline
-ieee80211_tx_h_misc(struct ieee80211_tx_data *tx)
-{
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)tx->skb->data;
- struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx->skb);
- struct ieee80211_supported_band *sband;
- sband = tx->local->hw.wiphy->bands[tx->channel->band];
+ rate_control_get_rate(tx->sdata, tx->sta, &txrc);
+
+ if (unlikely(info->control.rates[0].idx < 0))
+ return TX_DROP;
+
+ if (txrc.reported_rate.idx < 0)
+ txrc.reported_rate = info->control.rates[0];
if (tx->sta)
- info->control.sta = &tx->sta->sta;
+ tx->sta->last_tx_rate = txrc.reported_rate;
- if (!info->control.retry_limit) {
- if (!is_multicast_ether_addr(hdr->addr1)) {
- int len = min_t(int, tx->skb->len + FCS_LEN,
- tx->local->fragmentation_threshold);
- if (len > tx->local->rts_threshold
- && tx->local->rts_threshold <
- IEEE80211_MAX_RTS_THRESHOLD) {
- info->flags |= IEEE80211_TX_CTL_USE_RTS_CTS;
- info->flags |=
- IEEE80211_TX_CTL_LONG_RETRY_LIMIT;
- info->control.retry_limit =
- tx->local->hw.conf.long_frame_max_tx_count - 1;
- } else {
- info->control.retry_limit =
- tx->local->hw.conf.short_frame_max_tx_count - 1;
- }
- } else {
- info->control.retry_limit = 1;
- }
- }
+ if (unlikely(!info->control.rates[0].count))
+ info->control.rates[0].count = 1;
- if (tx->flags & IEEE80211_TX_FRAGMENTED) {
- /* Do not use multiple retry rates when sending fragmented
- * frames.
- * TODO: The last fragment could still use multiple retry
- * rates. */
- info->control.retries[0].rate_idx = -1;
+ if (is_multicast_ether_addr(hdr->addr1)) {
+ /*
+ * XXX: verify the rate is in the basic rateset
+ */
+ return TX_CONTINUE;
}
- /* Use CTS protection for unicast frames sent using extended rates if
- * there are associated non-ERP stations and RTS/CTS is not configured
- * for the frame. */
- if ((tx->sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) &&
- (sband->bitrates[tx->rate_idx].flags & IEEE80211_RATE_ERP_G) &&
- (tx->flags & IEEE80211_TX_UNICAST) &&
- tx->sdata->vif.bss_conf.use_cts_prot &&
- !(info->flags & IEEE80211_TX_CTL_USE_RTS_CTS))
- info->flags |= IEEE80211_TX_CTL_USE_CTS_PROTECT;
-
- /* Transmit data frames using short preambles if the driver supports
- * short preambles at the selected rate and short preambles are
- * available on the network at the current point in time. */
- if (ieee80211_is_data(hdr->frame_control) &&
- (sband->bitrates[tx->rate_idx].flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
- tx->sdata->vif.bss_conf.use_short_preamble &&
- (!tx->sta || test_sta_flags(tx->sta, WLAN_STA_SHORT_PREAMBLE))) {
- info->flags |= IEEE80211_TX_CTL_SHORT_PREAMBLE;
+ /*
+ * set up the RTS/CTS rate as the fastest basic rate
+ * that is not faster than the data rate
+ *
+ * XXX: Should this check all retry rates?
+ */
+ if (!(info->control.rates[0].flags & IEEE80211_TX_RC_MCS)) {
+ s8 baserate = 0;
+
+ rate = &sband->bitrates[info->control.rates[0].idx];
+
+ for (i = 0; i < sband->n_bitrates; i++) {
+ /* must be a basic rate */
+ if (!(tx->sdata->vif.bss_conf.basic_rates & BIT(i)))
+ continue;
+ /* must not be faster than the data rate */
+ if (sband->bitrates[i].bitrate > rate->bitrate)
+ continue;
+ /* maximum */
+ if (sband->bitrates[baserate].bitrate <
+ sband->bitrates[i].bitrate)
+ baserate = i;
+ }
+
+ info->control.rts_cts_rate_idx = baserate;
}
- if ((info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) ||
- (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT)) {
- struct ieee80211_rate *rate;
- s8 baserate = -1;
- int idx;
+ for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
+ /*
+ * make sure there's no valid rate following
+ * an invalid one, just in case drivers don't
+ * take the API seriously to stop at -1.
+ */
+ if (inval) {
+ info->control.rates[i].idx = -1;
+ continue;
+ }
+ if (info->control.rates[i].idx < 0) {
+ inval = true;
+ continue;
+ }
- /* Do not use multiple retry rates when using RTS/CTS */
- info->control.retries[0].rate_idx = -1;
+ /*
+ * For now assume MCS is already set up correctly, this
+ * needs to be fixed.
+ */
+ if (info->control.rates[i].flags & IEEE80211_TX_RC_MCS) {
+ WARN_ON(info->control.rates[i].idx > 76);
+ continue;
+ }
- /* Use min(data rate, max base rate) as CTS/RTS rate */
- rate = &sband->bitrates[tx->rate_idx];
+ /* set up RTS protection if desired */
+ if (rts)
+ info->control.rates[i].flags |=
+ IEEE80211_TX_RC_USE_RTS_CTS;
- for (idx = 0; idx < sband->n_bitrates; idx++) {
- if (sband->bitrates[idx].bitrate > rate->bitrate)
- continue;
- if (tx->sdata->vif.bss_conf.basic_rates & BIT(idx) &&
- (baserate < 0 ||
- (sband->bitrates[baserate].bitrate
- < sband->bitrates[idx].bitrate)))
- baserate = idx;
+ /* RC is busted */
+ if (WARN_ON(info->control.rates[i].idx >=
+ sband->n_bitrates)) {
+ info->control.rates[i].idx = -1;
+ continue;
}
- if (baserate >= 0)
- info->control.rts_cts_rate_idx = baserate;
- else
- info->control.rts_cts_rate_idx = 0;
+ rate = &sband->bitrates[info->control.rates[i].idx];
+
+ /* set up short preamble */
+ if (short_preamble &&
+ rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
+ info->control.rates[i].flags |=
+ IEEE80211_TX_RC_USE_SHORT_PREAMBLE;
+
+ /* set up G protection */
+ if (!rts && tx->sdata->vif.bss_conf.use_cts_prot &&
+ rate->flags & IEEE80211_RATE_ERP_G)
+ info->control.rates[i].flags |=
+ IEEE80211_TX_RC_USE_CTS_PROTECT;
}
+ return TX_CONTINUE;
+}
+
+static ieee80211_tx_result debug_noinline
+ieee80211_tx_h_misc(struct ieee80211_tx_data *tx)
+{
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx->skb);
+
if (tx->sta)
info->control.sta = &tx->sta->sta;
@@ -678,6 +699,7 @@ ieee80211_tx_h_fragment(struct ieee80211_tx_data *tx)
left = payload_len - per_fragm;
for (i = 0; i < num_fragm - 1; i++) {
struct ieee80211_hdr *fhdr;
+ struct ieee80211_tx_info *info;
size_t copylen;
if (left <= 0)
@@ -692,20 +714,45 @@ ieee80211_tx_h_fragment(struct ieee80211_tx_data *tx)
IEEE80211_ENCRYPT_TAILROOM);
if (!frag)
goto fail;
+
/* Make sure that all fragments use the same priority so
* that they end up using the same TX queue */
frag->priority = first->priority;
+
skb_reserve(frag, tx->local->tx_headroom +
IEEE80211_ENCRYPT_HEADROOM);
+
+ /* copy TX information */
+ info = IEEE80211_SKB_CB(frag);
+ memcpy(info, first->cb, sizeof(frag->cb));
+
+ /* copy/fill in 802.11 header */
fhdr = (struct ieee80211_hdr *) skb_put(frag, hdrlen);
memcpy(fhdr, first->data, hdrlen);
- if (i == num_fragm - 2)
- fhdr->frame_control &= cpu_to_le16(~IEEE80211_FCTL_MOREFRAGS);
fhdr->seq_ctrl = cpu_to_le16(seq | ((i + 1) & IEEE80211_SCTL_FRAG));
+
+ if (i == num_fragm - 2) {
+ /* clear MOREFRAGS bit for the last fragment */
+ fhdr->frame_control &= cpu_to_le16(~IEEE80211_FCTL_MOREFRAGS);
+ } else {
+ /*
+ * No multi-rate retries for fragmented frames, that
+ * would completely throw off the NAV at other STAs.
+ */
+ info->control.rates[1].idx = -1;
+ info->control.rates[2].idx = -1;
+ info->control.rates[3].idx = -1;
+ info->control.rates[4].idx = -1;
+ BUILD_BUG_ON(IEEE80211_TX_MAX_RATES != 5);
+ info->flags &= ~IEEE80211_TX_CTL_RATE_CTRL_PROBE;
+ }
+
+ /* copy data */
copylen = left > per_fragm ? per_fragm : left;
memcpy(skb_put(frag, copylen), pos, copylen);
- memcpy(frag->cb, first->cb, sizeof(frag->cb));
+
skb_copy_queue_mapping(frag, first);
+
frag->do_not_encrypt = first->do_not_encrypt;
pos += copylen;
@@ -765,12 +812,10 @@ ieee80211_tx_h_calculate_duration(struct ieee80211_tx_data *tx)
tx->extra_frag[0]->len);
for (i = 0; i < tx->num_extra_frag; i++) {
- if (i + 1 < tx->num_extra_frag) {
+ if (i + 1 < tx->num_extra_frag)
next_len = tx->extra_frag[i + 1]->len;
- } else {
+ else
next_len = 0;
- tx->rate_idx = tx->last_frag_rate_idx;
- }
hdr = (struct ieee80211_hdr *)tx->extra_frag[i]->data;
hdr->duration_id = ieee80211_duration(tx, 0, next_len);
@@ -823,7 +868,6 @@ __ieee80211_parse_tx_radiotap(struct ieee80211_tx_data *tx,
(struct ieee80211_radiotap_header *) skb->data;
struct ieee80211_supported_band *sband;
int ret = ieee80211_radiotap_iterator_init(&iterator, rthdr, skb->len);
- struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
sband = tx->local->hw.wiphy->bands[tx->channel->band];
@@ -837,8 +881,6 @@ __ieee80211_parse_tx_radiotap(struct ieee80211_tx_data *tx,
*/
while (!ret) {
- int i, target_rate;
-
ret = ieee80211_radiotap_iterator_next(&iterator);
if (ret)
@@ -852,38 +894,6 @@ __ieee80211_parse_tx_radiotap(struct ieee80211_tx_data *tx,
* get_unaligned((type *)iterator.this_arg) to dereference
* iterator.this_arg for type "type" safely on all arches.
*/
- case IEEE80211_RADIOTAP_RATE:
- /*
- * radiotap rate u8 is in 500kbps units eg, 0x02=1Mbps
- * ieee80211 rate int is in 100kbps units eg, 0x0a=1Mbps
- */
- target_rate = (*iterator.this_arg) * 5;
- for (i = 0; i < sband->n_bitrates; i++) {
- struct ieee80211_rate *r;
-
- r = &sband->bitrates[i];
-
- if (r->bitrate == target_rate) {
- tx->rate_idx = i;
- break;
- }
- }
- break;
-
- case IEEE80211_RADIOTAP_ANTENNA:
- /*
- * radiotap uses 0 for 1st ant, mac80211 is 1 for
- * 1st ant
- */
- info->antenna_sel_tx = (*iterator.this_arg) + 1;
- break;
-
-#if 0
- case IEEE80211_RADIOTAP_DBM_TX_POWER:
- control->power_level = *iterator.this_arg;
- break;
-#endif
-
case IEEE80211_RADIOTAP_FLAGS:
if (*iterator.this_arg & IEEE80211_RADIOTAP_F_FCS) {
/*
@@ -949,8 +959,6 @@ __ieee80211_tx_prepare(struct ieee80211_tx_data *tx,
tx->local = local;
tx->sdata = IEEE80211_DEV_TO_SUB_IF(dev);
tx->channel = local->hw.conf.channel;
- tx->rate_idx = -1;
- tx->last_frag_rate_idx = -1;
/*
* Set this flag (used below to indicate "automatic fragmentation"),
* it will be cleared/left by radiotap as desired.
@@ -1051,23 +1059,11 @@ static int __ieee80211_tx(struct ieee80211_local *local, struct sk_buff *skb,
if (!tx->extra_frag[i])
continue;
info = IEEE80211_SKB_CB(tx->extra_frag[i]);
- info->flags &= ~(IEEE80211_TX_CTL_USE_RTS_CTS |
- IEEE80211_TX_CTL_USE_CTS_PROTECT |
- IEEE80211_TX_CTL_CLEAR_PS_FILT |
+ info->flags &= ~(IEEE80211_TX_CTL_CLEAR_PS_FILT |
IEEE80211_TX_CTL_FIRST_FRAGMENT);
if (netif_subqueue_stopped(local->mdev,
tx->extra_frag[i]))
return IEEE80211_TX_FRAG_AGAIN;
- if (i == tx->num_extra_frag) {
- info->tx_rate_idx = tx->last_frag_rate_idx;
-
- if (tx->flags & IEEE80211_TX_PROBE_LAST_FRAG)
- info->flags |=
- IEEE80211_TX_CTL_RATE_CTRL_PROBE;
- else
- info->flags &=
- ~IEEE80211_TX_CTL_RATE_CTRL_PROBE;
- }
ret = local->ops->tx(local_to_hw(local),
tx->extra_frag[i]);
@@ -1204,9 +1200,6 @@ retry:
store->skb = skb;
store->extra_frag = tx.extra_frag;
store->num_extra_frag = tx.num_extra_frag;
- store->last_frag_rate_idx = tx.last_frag_rate_idx;
- store->last_frag_rate_ctrl_probe =
- !!(tx.flags & IEEE80211_TX_PROBE_LAST_FRAG);
}
out:
rcu_read_unlock();
@@ -1763,10 +1756,7 @@ void ieee80211_tx_pending(unsigned long data)
store = &local->pending_packet[i];
tx.extra_frag = store->extra_frag;
tx.num_extra_frag = store->num_extra_frag;
- tx.last_frag_rate_idx = store->last_frag_rate_idx;
tx.flags = 0;
- if (store->last_frag_rate_ctrl_probe)
- tx.flags |= IEEE80211_TX_PROBE_LAST_FRAG;
ret = __ieee80211_tx(local, store->skb, &tx);
if (ret) {
if (ret == IEEE80211_TX_FRAG_AGAIN)
@@ -1854,7 +1844,6 @@ struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw,
struct ieee80211_sub_if_data *sdata = NULL;
struct ieee80211_if_ap *ap = NULL;
struct ieee80211_if_sta *ifsta = NULL;
- struct rate_selection rsel;
struct beacon_data *beacon;
struct ieee80211_supported_band *sband;
enum ieee80211_band band = local->hw.conf.channel->band;
@@ -1958,32 +1947,23 @@ struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw,
skb->do_not_encrypt = 1;
info->band = band;
- rate_control_get_rate(sdata, sband, NULL, skb, &rsel);
-
- if (unlikely(rsel.rate_idx < 0)) {
- if (net_ratelimit()) {
- printk(KERN_DEBUG "%s: ieee80211_beacon_get: "
- "no rate found\n",
- wiphy_name(local->hw.wiphy));
- }
- dev_kfree_skb_any(skb);
- skb = NULL;
- goto out;
- }
+ /*
+ * XXX: For now, always use the lowest rate
+ */
+ info->control.rates[0].idx = 0;
+ info->control.rates[0].count = 1;
+ info->control.rates[1].idx = -1;
+ info->control.rates[2].idx = -1;
+ info->control.rates[3].idx = -1;
+ info->control.rates[4].idx = -1;
+ BUILD_BUG_ON(IEEE80211_TX_MAX_RATES != 5);
info->control.vif = vif;
- info->tx_rate_idx = rsel.rate_idx;
info->flags |= IEEE80211_TX_CTL_NO_ACK;
info->flags |= IEEE80211_TX_CTL_CLEAR_PS_FILT;
info->flags |= IEEE80211_TX_CTL_ASSIGN_SEQ;
- if (sdata->vif.bss_conf.use_short_preamble &&
- sband->bitrates[rsel.rate_idx].flags & IEEE80211_RATE_SHORT_PREAMBLE)
- info->flags |= IEEE80211_TX_CTL_SHORT_PREAMBLE;
-
- info->control.retry_limit = 1;
-
-out:
+ out:
rcu_read_unlock();
return skb;
}
diff --git a/net/mac80211/wext.c b/net/mac80211/wext.c
index f7e442f80a1..31d2e74a1bc 100644
--- a/net/mac80211/wext.c
+++ b/net/mac80211/wext.c
@@ -636,8 +636,8 @@ static int ieee80211_ioctl_giwrate(struct net_device *dev,
sta = sta_info_get(local, sdata->u.sta.bssid);
- if (sta && sta->last_txrate_idx < sband->n_bitrates)
- rate->value = sband->bitrates[sta->last_txrate_idx].bitrate;
+ if (sta && !(sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS))
+ rate->value = sband->bitrates[sta->last_tx_rate.idx].bitrate;
else
rate->value = 0;
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-30 00:38:20 +0000