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mac80211/drivers: rewrite the rate control API

Browse source 
So after the previous changes we were still unhappy with how
convoluted the API is and decided to make things simpler for
everybody. This completely changes the rate control API, now
taking into account 802.11n with MCS rates and more control,
most drivers don't support that though.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2008-10-21 12:40:02 +02:00 committed by John W. Linville
parent cb121bad67
commit e6a9854b05
47 changed files with 897 additions and 693 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

21
drivers/net/wireless/adm8211.c
View file

@ -341,15 +341,14 @@ static void adm8211_interrupt_tci(struct ieee80211_hw *dev)
pci_unmap_single(priv->pdev, info->mapping,
info->skb->len, PCI_DMA_TODEVICE);
memset(&txi->status, 0, sizeof(txi->status));
ieee80211_tx_info_clear_status(txi);
skb_pull(skb, sizeof(struct adm8211_tx_hdr));
memcpy(skb_push(skb, info->hdrlen), skb->cb, info->hdrlen);
if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK)) {
if (status & TDES0_STATUS_ES)
txi->status.excessive_retries = 1;
else
txi->flags |= IEEE80211_TX_STAT_ACK;
}
if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) &&
!(status & TDES0_STATUS_ES))
txi->flags |= IEEE80211_TX_STAT_ACK;
ieee80211_tx_status_irqsafe(dev, skb);
info->skb = NULL;
@ -1691,8 +1690,10 @@ static int adm8211_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
struct ieee80211_hdr *hdr;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_rate *txrate = ieee80211_get_tx_rate(dev, info);
u8 rc_flags;
short_preamble = !!(txrate->flags & IEEE80211_TX_CTL_SHORT_PREAMBLE);
rc_flags = info->control.rates[0].flags;
short_preamble = !!(rc_flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE);
plcp_signal = txrate->bitrate;
hdr = (struct ieee80211_hdr *)skb->data;
@ -1724,10 +1725,10 @@ static int adm8211_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
if (short_preamble)
txhdr->header_control |= cpu_to_le16(ADM8211_TXHDRCTL_SHORT_PREAMBLE);
if (info->flags & IEEE80211_TX_CTL_USE_RTS_CTS)
if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS)
txhdr->header_control |= cpu_to_le16(ADM8211_TXHDRCTL_ENABLE_RTS);
txhdr->retry_limit = info->control.retry_limit;
txhdr->retry_limit = info->control.rates[0].count;
adm8211_tx_raw(dev, skb, plcp_signal, hdrlen);

34
drivers/net/wireless/ath5k/base.c
View file

@ -541,8 +541,8 @@ ath5k_pci_probe(struct pci_dev *pdev,
/* set up multi-rate retry capabilities */
if (sc->ah->ah_version == AR5K_AR5212) {
hw->max_altrates = 3;
hw->max_altrate_tries = 11;
hw->max_rates = 4;
hw->max_rate_tries = 11;
}
/* Finish private driver data initialization */
@ -1181,7 +1181,7 @@ ath5k_txbuf_setup(struct ath5k_softc *sc, struct ath5k_buf *bf)
ieee80211_get_hdrlen_from_skb(skb), AR5K_PKT_TYPE_NORMAL,
(sc->power_level * 2),
ieee80211_get_tx_rate(sc->hw, info)->hw_value,
info->control.retry_limit, keyidx, 0, flags, 0, 0);
info->control.rates[0].count, keyidx, 0, flags, 0, 0);
if (ret)
goto err_unmap;
@ -1193,7 +1193,7 @@ ath5k_txbuf_setup(struct ath5k_softc *sc, struct ath5k_buf *bf)
break;
mrr_rate[i] = rate->hw_value;
mrr_tries[i] = info->control.retries[i].limit;
mrr_tries[i] = info->control.rates[i + 1].count;
}
ah->ah_setup_mrr_tx_desc(ah, ds,
@ -1849,30 +1849,26 @@ ath5k_tx_processq(struct ath5k_softc *sc, struct ath5k_txq *txq)
pci_unmap_single(sc->pdev, bf->skbaddr, skb->len,
PCI_DMA_TODEVICE);
memset(&info->status, 0, sizeof(info->status));
info->tx_rate_idx = ath5k_hw_to_driver_rix(sc,
ts.ts_rate[ts.ts_final_idx]);
info->status.retry_count = ts.ts_longretry;
ieee80211_tx_info_clear_status(info);
for (i = 0; i < 4; i++) {
struct ieee80211_tx_altrate *r =
&info->status.retries[i];
struct ieee80211_tx_rate *r =
&info->status.rates[i];
if (ts.ts_rate[i]) {
r->rate_idx = ath5k_hw_to_driver_rix(sc, ts.ts_rate[i]);
r->limit = ts.ts_retry[i];
r->idx = ath5k_hw_to_driver_rix(sc, ts.ts_rate[i]);
r->count = ts.ts_retry[i];
} else {
r->rate_idx = -1;
r->limit = 0;
r->idx = -1;
r->count = 0;
}
}
info->status.excessive_retries = 0;
/* count the successful attempt as well */
info->status.rates[ts.ts_final_idx].count++;
if (unlikely(ts.ts_status)) {
sc->ll_stats.dot11ACKFailureCount++;
if (ts.ts_status & AR5K_TXERR_XRETRY)
info->status.excessive_retries = 1;
else if (ts.ts_status & AR5K_TXERR_FILT)
if (ts.ts_status & AR5K_TXERR_FILT)
info->flags |= IEEE80211_TX_STAT_TX_FILTERED;
} else {
info->flags |= IEEE80211_TX_STAT_ACK;

18
drivers/net/wireless/ath9k/main.c
View file

@ -457,12 +457,13 @@ void ath_tx_complete(struct ath_softc *sc, struct sk_buff *skb,
DPRINTF(sc, ATH_DBG_XMIT,
"%s: TX complete: skb: %p\n", __func__, skb);
ieee80211_tx_info_clear_status(tx_info);
if (tx_info->flags & IEEE80211_TX_CTL_NO_ACK ||
tx_info->flags & IEEE80211_TX_STAT_TX_FILTERED) {
/* free driver's private data area of tx_info */
if (tx_info->driver_data[0] != NULL)
kfree(tx_info->driver_data[0]);
tx_info->driver_data[0] = NULL;
/* free driver's private data area of tx_info, XXX: HACK! */
if (tx_info->control.vif != NULL)
kfree(tx_info->control.vif);
tx_info->control.vif = NULL;
}
if (tx_status->flags & ATH_TX_BAR) {
@ -470,17 +471,12 @@ void ath_tx_complete(struct ath_softc *sc, struct sk_buff *skb,
tx_status->flags &= ~ATH_TX_BAR;
}
if (tx_status->flags & (ATH_TX_ERROR | ATH_TX_XRETRY)) {
if (!(tx_info->flags & IEEE80211_TX_CTL_NO_ACK)) {
/* Frame was not ACKed, but an ACK was expected */
tx_info->status.excessive_retries = 1;
}
} else {
if (!(tx_status->flags & (ATH_TX_ERROR | ATH_TX_XRETRY))) {
/* Frame was ACKed */
tx_info->flags |= IEEE80211_TX_STAT_ACK;
}
tx_info->status.retry_count = tx_status->retries;
tx_info->status.rates[0].count = tx_status->retries + 1;
ieee80211_tx_status(hw, skb);
if (an)

40
drivers/net/wireless/ath9k/rc.c
View file

@ -1864,24 +1864,21 @@ static void ath_tx_status(void *priv, struct ieee80211_supported_band *sband,
hdr = (struct ieee80211_hdr *)skb->data;
fc = hdr->frame_control;
tx_info_priv = (struct ath_tx_info_priv *)tx_info->driver_data[0];
/* XXX: UGLY HACK!! */
tx_info_priv = (struct ath_tx_info_priv *)tx_info->control.vif;
spin_lock_bh(&sc->node_lock);
an = ath_node_find(sc, hdr->addr1);
spin_unlock_bh(&sc->node_lock);
if (!an || !priv_sta || !ieee80211_is_data(fc)) {
if (tx_info->driver_data[0] != NULL) {
kfree(tx_info->driver_data[0]);
tx_info->driver_data[0] = NULL;
}
if (tx_info_priv == NULL)
return;
}
if (tx_info->driver_data[0] != NULL) {
if (an && priv_sta && ieee80211_is_data(fc))
ath_rate_tx_complete(sc, an, priv_sta, tx_info_priv);
kfree(tx_info->driver_data[0]);
tx_info->driver_data[0] = NULL;
}
kfree(tx_info_priv);
tx_info->control.vif = NULL;
}
static void ath_tx_aggr_resp(struct ath_softc *sc,
@ -1927,10 +1924,11 @@ static void ath_tx_aggr_resp(struct ath_softc *sc,
}
}
static void ath_get_rate(void *priv, struct ieee80211_supported_band *sband,
struct ieee80211_sta *sta, void *priv_sta,
struct sk_buff *skb, struct rate_selection *sel)
static void ath_get_rate(void *priv, struct ieee80211_sta *sta, void *priv_sta,
struct ieee80211_tx_rate_control *txrc)
{
struct ieee80211_supported_band *sband = txrc->sband;
struct sk_buff *skb = txrc->skb;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
struct ath_softc *sc = priv;
struct ieee80211_hw *hw = sc->hw;
@ -1945,17 +1943,17 @@ static void ath_get_rate(void *priv, struct ieee80211_supported_band *sband,
DPRINTF(sc, ATH_DBG_RATE, "%s\n", __func__);
/* allocate driver private area of tx_info */
tx_info->driver_data[0] = kzalloc(sizeof(*tx_info_priv), GFP_ATOMIC);
ASSERT(tx_info->driver_data[0] != NULL);
tx_info_priv = (struct ath_tx_info_priv *)tx_info->driver_data[0];
/* allocate driver private area of tx_info, XXX: UGLY HACK! */
tx_info->control.vif = kzalloc(sizeof(*tx_info_priv), GFP_ATOMIC);
tx_info_priv = (struct ath_tx_info_priv *)tx_info->control.vif;
ASSERT(tx_info_priv != NULL);
lowest_idx = rate_lowest_index(sband, sta);
tx_info_priv->min_rate = (sband->bitrates[lowest_idx].bitrate * 2) / 10;
/* lowest rate for management and multicast/broadcast frames */
if (!ieee80211_is_data(fc) ||
is_multicast_ether_addr(hdr->addr1) || !sta) {
sel->rate_idx = lowest_idx;
tx_info->control.rates[0].idx = lowest_idx;
return;
}
@ -1966,8 +1964,10 @@ static void ath_get_rate(void *priv, struct ieee80211_supported_band *sband,
tx_info_priv->rcs,
&is_probe,
false);
#if 0
if (is_probe)
sel->probe_idx = ath_rc_priv->tx_ratectrl.probe_rate;
#endif
/* Ratecontrol sometimes returns invalid rate index */
if (tx_info_priv->rcs[0].rix != 0xff)
@ -1975,7 +1975,7 @@ static void ath_get_rate(void *priv, struct ieee80211_supported_band *sband,
else
tx_info_priv->rcs[0].rix = ath_rc_priv->prev_data_rix;
sel->rate_idx = tx_info_priv->rcs[0].rix;
tx_info->control.rates[0].idx = tx_info_priv->rcs[0].rix;
/* Check if aggregation has to be enabled for this tid */

28
drivers/net/wireless/ath9k/xmit.c
View file

@ -168,7 +168,9 @@ static void fill_min_rates(struct sk_buff *skb, struct ath_tx_control *txctl)
hdr = (struct ieee80211_hdr *)skb->data;
fc = hdr->frame_control;
tx_info_priv = (struct ath_tx_info_priv *)tx_info->driver_data[0];
/* XXX: HACK! */
tx_info_priv = (struct ath_tx_info_priv *)tx_info->control.vif;
if (ieee80211_is_mgmt(fc) || ieee80211_is_ctl(fc)) {
txctl->use_minrate = 1;
@ -288,13 +290,16 @@ static int ath_tx_prepare(struct ath_softc *sc,
if (tx_info->flags & IEEE80211_TX_CTL_NO_ACK)
txctl->flags |= ATH9K_TXDESC_NOACK;
if (tx_info->flags & IEEE80211_TX_CTL_USE_RTS_CTS)
if (tx_info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS)
txctl->flags |= ATH9K_TXDESC_RTSENA;
/*
* Setup for rate calculations.
*/
tx_info_priv = (struct ath_tx_info_priv *)tx_info->driver_data[0];
/* XXX: HACK! */
tx_info_priv = (struct ath_tx_info_priv *)tx_info->control.vif;
rcs = tx_info_priv->rcs;
if (ieee80211_is_data(fc) && !txctl->use_minrate) {
@ -855,7 +860,9 @@ static int ath_tx_send_normal(struct ath_softc *sc,
skb = (struct sk_buff *)bf->bf_mpdu;
tx_info = IEEE80211_SKB_CB(skb);
tx_info_priv = (struct ath_tx_info_priv *)tx_info->driver_data[0];
/* XXX: HACK! */
tx_info_priv = (struct ath_tx_info_priv *)tx_info->control.vif;
memcpy(bf->bf_rcs, tx_info_priv->rcs, 4 * sizeof(tx_info_priv->rcs[0]));
/* update starting sequence number for subsequent ADDBA request */
@ -1249,8 +1256,9 @@ static int ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq)
}
skb = bf->bf_mpdu;
tx_info = IEEE80211_SKB_CB(skb);
tx_info_priv = (struct ath_tx_info_priv *)
tx_info->driver_data[0];
/* XXX: HACK! */
tx_info_priv = (struct ath_tx_info_priv *) tx_info->control.vif;
if (ds->ds_txstat.ts_status & ATH9K_TXERR_FILT)
tx_info->flags |= IEEE80211_TX_STAT_TX_FILTERED;
if ((ds->ds_txstat.ts_status & ATH9K_TXERR_FILT) == 0 &&
@ -1431,7 +1439,8 @@ static int ath_tx_send_ampdu(struct ath_softc *sc,
skb = (struct sk_buff *)bf->bf_mpdu;
tx_info = IEEE80211_SKB_CB(skb);
tx_info_priv = (struct ath_tx_info_priv *)tx_info->driver_data[0];
/* XXX: HACK! */
tx_info_priv = (struct ath_tx_info_priv *)tx_info->control.vif;
memcpy(bf->bf_rcs, tx_info_priv->rcs, 4 * sizeof(tx_info_priv->rcs[0]));
/* Add sub-frame to BAW */
@ -1466,7 +1475,7 @@ static u32 ath_lookup_rate(struct ath_softc *sc,
skb = (struct sk_buff *)bf->bf_mpdu;
tx_info = IEEE80211_SKB_CB(skb);
tx_info_priv = (struct ath_tx_info_priv *)
tx_info->driver_data[0];
tx_info->control.vif; /* XXX: HACK! */
memcpy(bf->bf_rcs,
tx_info_priv->rcs, 4 * sizeof(tx_info_priv->rcs[0]));
@ -1927,7 +1936,8 @@ static int ath_tx_start_dma(struct ath_softc *sc,
bf->bf_flags = txctl->flags;
bf->bf_keytype = txctl->keytype;
tx_info_priv = (struct ath_tx_info_priv *)tx_info->driver_data[0];
/* XXX: HACK! */
tx_info_priv = (struct ath_tx_info_priv *)tx_info->control.vif;
rcs = tx_info_priv->rcs;
bf->bf_rcs[0] = rcs[0];
bf->bf_rcs[1] = rcs[1];

4
drivers/net/wireless/b43/dma.c
View file

@ -1387,13 +1387,11 @@ void b43_dma_handle_txstatus(struct b43_wldev *dev,
info = IEEE80211_SKB_CB(meta->skb);
memset(&info->status, 0, sizeof(info->status));
/*
* Call back to inform the ieee80211 subsystem about
* the status of the transmission.
*/
frame_succeed = b43_fill_txstatus_report(info, status);
frame_succeed = b43_fill_txstatus_report(dev, info, status);
#ifdef CONFIG_B43_DEBUG
if (frame_succeed)
ring->nr_succeed_tx_packets++;

2
drivers/net/wireless/b43/main.c
View file

@ -4555,7 +4555,7 @@ static int b43_wireless_init(struct ssb_device *dev)
BIT(NL80211_IFTYPE_ADHOC);
hw->queues = b43_modparam_qos ? 4 : 1;
hw->max_altrates = 1;
hw->max_rates = 2;
SET_IEEE80211_DEV(hw, dev->dev);
if (is_valid_ether_addr(sprom->et1mac))
SET_IEEE80211_PERM_ADDR(hw, sprom->et1mac);

3
drivers/net/wireless/b43/pio.c
View file

@ -587,9 +587,8 @@ void b43_pio_handle_txstatus(struct b43_wldev *dev,
spin_lock(&q->lock); /* IRQs are already disabled. */
info = IEEE80211_SKB_CB(pack->skb);
memset(&info->status, 0, sizeof(info->status));
b43_fill_txstatus_report(info, status);
b43_fill_txstatus_report(dev, info, status);
total_len = pack->skb->len + b43_txhdr_size(dev);
total_len = roundup(total_len, 4);

60
drivers/net/wireless/b43/xmit.c
View file

@ -185,7 +185,7 @@ int b43_generate_txhdr(struct b43_wldev *dev,
u8 *_txhdr,
const unsigned char *fragment_data,
unsigned int fragment_len,
const struct ieee80211_tx_info *info,
struct ieee80211_tx_info *info,
u16 cookie)
{
struct b43_txhdr *txhdr = (struct b43_txhdr *)_txhdr;
@ -202,6 +202,7 @@ int b43_generate_txhdr(struct b43_wldev *dev,
u16 phy_ctl = 0;
u8 extra_ft = 0;
struct ieee80211_rate *txrate;
struct ieee80211_tx_rate *rates;
memset(txhdr, 0, sizeof(*txhdr));
@ -291,7 +292,7 @@ int b43_generate_txhdr(struct b43_wldev *dev,
phy_ctl |= B43_TXH_PHY_ENC_OFDM;
else
phy_ctl |= B43_TXH_PHY_ENC_CCK;
if (info->flags & IEEE80211_TX_CTL_SHORT_PREAMBLE)
if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
phy_ctl |= B43_TXH_PHY_SHORTPRMBL;
switch (b43_ieee80211_antenna_sanitize(dev, info->antenna_sel_tx)) {
@ -314,6 +315,7 @@ int b43_generate_txhdr(struct b43_wldev *dev,
B43_WARN_ON(1);
}
rates = info->control.rates;
/* MAC control */
if (!(info->flags & IEEE80211_TX_CTL_NO_ACK))
mac_ctl |= B43_TXH_MAC_ACK;
@ -324,12 +326,22 @@ int b43_generate_txhdr(struct b43_wldev *dev,
mac_ctl |= B43_TXH_MAC_STMSDU;
if (phy->type == B43_PHYTYPE_A)
mac_ctl |= B43_TXH_MAC_5GHZ;
if (info->flags & IEEE80211_TX_CTL_LONG_RETRY_LIMIT)
/* Overwrite rates[0].count to make the retry calculation
* in the tx status easier. need the actual retry limit to
* detect whether the fallback rate was used.
*/
if ((rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) ||
(rates[0].count <= dev->wl->hw->conf.long_frame_max_tx_count)) {
rates[0].count = dev->wl->hw->conf.long_frame_max_tx_count;
mac_ctl |= B43_TXH_MAC_LONGFRAME;
} else {
rates[0].count = dev->wl->hw->conf.short_frame_max_tx_count;
}
/* Generate the RTS or CTS-to-self frame */
if ((info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) ||
(info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT)) {
if ((rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) ||
(rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)) {
unsigned int len;
struct ieee80211_hdr *hdr;
int rts_rate, rts_rate_fb;
@ -344,7 +356,7 @@ int b43_generate_txhdr(struct b43_wldev *dev,
rts_rate_fb = b43_calc_fallback_rate(rts_rate);
rts_rate_fb_ofdm = b43_is_ofdm_rate(rts_rate_fb);
if (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT) {
if (rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
struct ieee80211_cts *cts;
if (b43_is_old_txhdr_format(dev)) {
@ -687,10 +699,18 @@ void b43_handle_txstatus(struct b43_wldev *dev,
/* Fill out the mac80211 TXstatus report based on the b43-specific
* txstatus report data. This returns a boolean whether the frame was
* successfully transmitted. */
bool b43_fill_txstatus_report(struct ieee80211_tx_info *report,
bool b43_fill_txstatus_report(struct b43_wldev *dev,
struct ieee80211_tx_info *report,
const struct b43_txstatus *status)
{
bool frame_success = 1;
int retry_limit;
/* preserve the confiured retry limit before clearing the status
* The xmit function has overwritten the rc's value with the actual
* retry limit done by the hardware */
retry_limit = report->status.rates[0].count;
ieee80211_tx_info_clear_status(report);
if (status->acked) {
/* The frame was ACKed. */
@ -700,14 +720,32 @@ bool b43_fill_txstatus_report(struct ieee80211_tx_info *report,
if (!(report->flags & IEEE80211_TX_CTL_NO_ACK)) {
/* ...but we expected an ACK. */
frame_success = 0;
report->status.excessive_retries = 1;
}
}
if (status->frame_count == 0) {
/* The frame was not transmitted at all. */
report->status.retry_count = 0;
} else
report->status.retry_count = status->frame_count - 1;
report->status.rates[0].count = 0;
} else if (status->rts_count > dev->wl->hw->conf.short_frame_max_tx_count) {
/*
* If the short retries (RTS, not data frame) have exceeded
* the limit, the hw will not have tried the selected rate,
* but will have used the fallback rate instead.
* Don't let the rate control count attempts for the selected
* rate in this case, otherwise the statistics will be off.
*/
report->status.rates[0].count = 0;
report->status.rates[1].count = status->frame_count;
} else {
if (status->frame_count > retry_limit) {
report->status.rates[0].count = retry_limit;
report->status.rates[1].count = status->frame_count -
retry_limit;
} else {
report->status.rates[0].count = status->frame_count;
report->status.rates[1].idx = -1;
}
}
return frame_success;
}

5
drivers/net/wireless/b43/xmit.h
View file

@ -178,7 +178,7 @@ int b43_generate_txhdr(struct b43_wldev *dev,
u8 * txhdr,
const unsigned char *fragment_data,
unsigned int fragment_len,
const struct ieee80211_tx_info *txctl, u16 cookie);
struct ieee80211_tx_info *txctl, u16 cookie);
/* Transmit Status */
struct b43_txstatus {
@ -294,7 +294,8 @@ void b43_rx(struct b43_wldev *dev, struct sk_buff *skb, const void *_rxhdr);
void b43_handle_txstatus(struct b43_wldev *dev,
const struct b43_txstatus *status);
bool b43_fill_txstatus_report(struct ieee80211_tx_info *report,
bool b43_fill_txstatus_report(struct b43_wldev *dev,
struct ieee80211_tx_info *report,
const struct b43_txstatus *status);
void b43_tx_suspend(struct b43_wldev *dev);

48
drivers/net/wireless/b43legacy/dma.c
View file

@ -1411,6 +1411,7 @@ void b43legacy_dma_handle_txstatus(struct b43legacy_wldev *dev,
struct b43legacy_dmaring *ring;
struct b43legacy_dmadesc_generic *desc;
struct b43legacy_dmadesc_meta *meta;
int retry_limit;
int slot;
ring = parse_cookie(dev, status->cookie, &slot);
@ -1437,25 +1438,42 @@ void b43legacy_dma_handle_txstatus(struct b43legacy_wldev *dev,
struct ieee80211_tx_info *info;
BUG_ON(!meta->skb);
info = IEEE80211_SKB_CB(meta->skb);
/* preserve the confiured retry limit before clearing the status
* The xmit function has overwritten the rc's value with the actual
* retry limit done by the hardware */
retry_limit = info->status.rates[0].count;
ieee80211_tx_info_clear_status(info);
if (status->acked)
info->flags |= IEEE80211_TX_STAT_ACK;
if (status->rts_count > dev->wl->hw->conf.short_frame_max_tx_count) {
/*
* If the short retries (RTS, not data frame) have exceeded
* the limit, the hw will not have tried the selected rate,
* but will have used the fallback rate instead.
* Don't let the rate control count attempts for the selected
* rate in this case, otherwise the statistics will be off.
*/
info->status.rates[0].count = 0;
info->status.rates[1].count = status->frame_count;
} else {
if (status->frame_count > retry_limit) {
info->status.rates[0].count = retry_limit;
info->status.rates[1].count = status->frame_count -
retry_limit;
} else {
info->status.rates[0].count = status->frame_count;
info->status.rates[1].idx = -1;
}
}
/* Call back to inform the ieee80211 subsystem about the
* status of the transmission.
* Some fields of txstat are already filled in dma_tx().
*/
memset(&info->status, 0, sizeof(info->status));
if (status->acked) {
info->flags |= IEEE80211_TX_STAT_ACK;
} else {
if (!(info->flags & IEEE80211_TX_CTL_NO_ACK))
info->status.excessive_retries = 1;
}
if (status->frame_count == 0) {
/* The frame was not transmitted at all. */
info->status.retry_count = 0;
} else
info->status.retry_count = status->frame_count
- 1;
ieee80211_tx_status_irqsafe(dev->wl->hw, meta->skb);
/* skb is freed by ieee80211_tx_status_irqsafe() */
meta->skb = NULL;

2
drivers/net/wireless/b43legacy/main.c
View file

@ -3682,7 +3682,7 @@ static int b43legacy_wireless_init(struct ssb_device *dev)
BIT(NL80211_IFTYPE_WDS) |
BIT(NL80211_IFTYPE_ADHOC);
hw->queues = 1; /* FIXME: hardware has more queues */
hw->max_altrates = 1;
hw->max_rates = 2;
SET_IEEE80211_DEV(hw, dev->dev);
if (is_valid_ether_addr(sprom->et1mac))
SET_IEEE80211_PERM_ADDR(hw, sprom->et1mac);

31
drivers/net/wireless/b43legacy/pio.c
View file

@ -491,6 +491,7 @@ void b43legacy_pio_handle_txstatus(struct b43legacy_wldev *dev,
struct b43legacy_pioqueue *queue;
struct b43legacy_pio_txpacket *packet;
struct ieee80211_tx_info *info;
int retry_limit;
queue = parse_cookie(dev, status->cookie, &packet);
B43legacy_WARN_ON(!queue);
@ -503,11 +504,37 @@ void b43legacy_pio_handle_txstatus(struct b43legacy_wldev *dev,
sizeof(struct b43legacy_txhdr_fw3));
info = IEEE80211_SKB_CB(packet->skb);
memset(&info->status, 0, sizeof(info->status));
/* preserve the confiured retry limit before clearing the status
* The xmit function has overwritten the rc's value with the actual
* retry limit done by the hardware */
retry_limit = info->status.rates[0].count;
ieee80211_tx_info_clear_status(info);
if (status->acked)
info->flags |= IEEE80211_TX_STAT_ACK;
info->status.retry_count = status->frame_count - 1;
if (status->rts_count > dev->wl->hw->conf.short_frame_max_tx_count) {
/*
* If the short retries (RTS, not data frame) have exceeded
* the limit, the hw will not have tried the selected rate,
* but will have used the fallback rate instead.
* Don't let the rate control count attempts for the selected
* rate in this case, otherwise the statistics will be off.
*/
info->status.rates[0].count = 0;
info->status.rates[1].count = status->frame_count;
} else {
if (status->frame_count > retry_limit) {
info->status.rates[0].count = retry_limit;
info->status.rates[1].count = status->frame_count -
retry_limit;
} else {
info->status.rates[0].count = status->frame_count;
info->status.rates[1].idx = -1;
}
}
ieee80211_tx_status_irqsafe(dev->wl->hw, packet->skb);
packet->skb = NULL;

26
drivers/net/wireless/b43legacy/xmit.c
View file

@ -188,7 +188,7 @@ static int generate_txhdr_fw3(struct b43legacy_wldev *dev,
struct b43legacy_txhdr_fw3 *txhdr,
const unsigned char *fragment_data,
unsigned int fragment_len,
const struct ieee80211_tx_info *info,
struct ieee80211_tx_info *info,
u16 cookie)
{
const struct ieee80211_hdr *wlhdr;
@ -201,6 +201,7 @@ static int generate_txhdr_fw3(struct b43legacy_wldev *dev,
u32 mac_ctl = 0;
u16 phy_ctl = 0;
struct ieee80211_rate *tx_rate;
struct ieee80211_tx_rate *rates;
wlhdr = (const struct ieee80211_hdr *)fragment_data;
@ -274,7 +275,7 @@ static int generate_txhdr_fw3(struct b43legacy_wldev *dev,
/* PHY TX Control word */
if (rate_ofdm)
phy_ctl |= B43legacy_TX4_PHY_OFDM;
if (dev->short_preamble)
if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
phy_ctl |= B43legacy_TX4_PHY_SHORTPRMBL;
switch (info->antenna_sel_tx) {
case 0:
@ -291,6 +292,7 @@ static int generate_txhdr_fw3(struct b43legacy_wldev *dev,
}
/* MAC control */
rates = info->control.rates;
if (!(info->flags & IEEE80211_TX_CTL_NO_ACK))
mac_ctl |= B43legacy_TX4_MAC_ACK;
if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ)
@ -299,12 +301,22 @@ static int generate_txhdr_fw3(struct b43legacy_wldev *dev,
mac_ctl |= B43legacy_TX4_MAC_STMSDU;
if (rate_fb_ofdm)
mac_ctl |= B43legacy_TX4_MAC_FALLBACKOFDM;
if (info->flags & IEEE80211_TX_CTL_LONG_RETRY_LIMIT)
/* Overwrite rates[0].count to make the retry calculation
* in the tx status easier. need the actual retry limit to
* detect whether the fallback rate was used.
*/
if ((rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) ||
(rates[0].count <= dev->wl->hw->conf.long_frame_max_tx_count)) {
rates[0].count = dev->wl->hw->conf.long_frame_max_tx_count;
mac_ctl |= B43legacy_TX4_MAC_LONGFRAME;
} else {
rates[0].count = dev->wl->hw->conf.short_frame_max_tx_count;
}
/* Generate the RTS or CTS-to-self frame */
if ((info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) ||
(info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT)) {
if ((rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) ||
(rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)) {
unsigned int len;
struct ieee80211_hdr *hdr;
int rts_rate;
@ -319,7 +331,7 @@ static int generate_txhdr_fw3(struct b43legacy_wldev *dev,
if (rts_rate_fb_ofdm)
mac_ctl |= B43legacy_TX4_MAC_CTSFALLBACKOFDM;
if (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT) {
if (rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
ieee80211_ctstoself_get(dev->wl->hw,
info->control.vif,
fragment_data,
@ -362,7 +374,7 @@ int b43legacy_generate_txhdr(struct b43legacy_wldev *dev,
u8 *txhdr,
const unsigned char *fragment_data,
unsigned int fragment_len,
const struct ieee80211_tx_info *info,
struct ieee80211_tx_info *info,
u16 cookie)
{
return generate_txhdr_fw3(dev, (struct b43legacy_txhdr_fw3 *)txhdr,

2
drivers/net/wireless/b43legacy/xmit.h
View file

@ -80,7 +80,7 @@ int b43legacy_generate_txhdr(struct b43legacy_wldev *dev,
u8 *txhdr,
const unsigned char *fragment_data,
unsigned int fragment_len,
const struct ieee80211_tx_info *info,
struct ieee80211_tx_info *info,
u16 cookie);

57
drivers/net/wireless/iwlwifi/iwl-3945-rs.c
View file

@ -422,34 +422,6 @@ static void rs_free_sta(void *priv, struct ieee80211_sta *sta,
}
/*
* get ieee prev rate from rate scale table.
* for A and B mode we need to overright prev
* value
*/
static int rs_adjust_next_rate(struct iwl3945_priv *priv, int rate)
{
int next_rate = iwl3945_get_prev_ieee_rate(rate);
switch (priv->band) {
case IEEE80211_BAND_5GHZ:
if (rate == IWL_RATE_12M_INDEX)
next_rate = IWL_RATE_9M_INDEX;
else if (rate == IWL_RATE_6M_INDEX)
next_rate = IWL_RATE_6M_INDEX;
break;
/* XXX cannot be invoked in current mac80211 so not a regression
case MODE_IEEE80211B:
if (rate == IWL_RATE_11M_INDEX_TABLE)
next_rate = IWL_RATE_5M_INDEX_TABLE;
break;
*/
default:
break;
}
return next_rate;
}
/**
* rs_tx_status - Update rate control values based on Tx results
*
@ -460,17 +432,21 @@ static void rs_tx_status(void *priv_rate, struct ieee80211_supported_band *sband
struct ieee80211_sta *sta, void *priv_sta,
struct sk_buff *skb)
{
u8 retries, current_count;
u8 retries = 0, current_count;
int scale_rate_index, first_index, last_index;
unsigned long flags;
struct iwl3945_priv *priv = (struct iwl3945_priv *)priv_rate;
struct iwl3945_rs_sta *rs_sta = priv_sta;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
int i;
IWL_DEBUG_RATE("enter\n");
retries = info->status.retry_count;
first_index = sband->bitrates[info->tx_rate_idx].hw_value;
for (i = 0; i < IEEE80211_TX_MAX_RATES; i++)
retries += info->status.rates[i].count;
retries--;
first_index = sband->bitrates[info->status.rates[0].idx].hw_value;
if ((first_index < 0) || (first_index >= IWL_RATE_COUNT)) {
IWL_DEBUG_RATE("leave: Rate out of bounds: %d\n", first_index);
return;
@ -502,7 +478,7 @@ static void rs_tx_status(void *priv_rate, struct ieee80211_supported_band *sband
last_index = scale_rate_index;
} else {
current_count = priv->retry_rate;
last_index = rs_adjust_next_rate(priv,
last_index = iwl3945_rs_next_rate(priv,
scale_rate_index);
}
@ -518,7 +494,7 @@ static void rs_tx_status(void *priv_rate, struct ieee80211_supported_band *sband
if (retries)
scale_rate_index =
rs_adjust_next_rate(priv, scale_rate_index);
iwl3945_rs_next_rate(priv, scale_rate_index);
}
@ -630,10 +606,11 @@ static u16 iwl3945_get_adjacent_rate(struct iwl3945_rs_sta *rs_sta,
* rate table and must reference the driver allocated rate table
*
*/
static void rs_get_rate(void *priv_r, struct ieee80211_supported_band *sband,
struct ieee80211_sta *sta, void *priv_sta,
struct sk_buff *skb, struct rate_selection *sel)
static void rs_get_rate(void *priv_r, struct ieee80211_sta *sta,
void *priv_sta, struct ieee80211_tx_rate_control *txrc)
{
struct ieee80211_supported_band *sband = txrc->sband;
struct sk_buff *skb = txrc->skb;
u8 low = IWL_RATE_INVALID;
u8 high = IWL_RATE_INVALID;
u16 high_low;
@ -649,6 +626,7 @@ static void rs_get_rate(void *priv_r, struct ieee80211_supported_band *sband,
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
u16 fc, rate_mask;
struct iwl3945_priv *priv = (struct iwl3945_priv *)priv_r;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
IWL_DEBUG_RATE("enter\n");
@ -659,7 +637,7 @@ static void rs_get_rate(void *priv_r, struct ieee80211_supported_band *sband,
is_multicast_ether_addr(hdr->addr1) ||
!sta || !priv_sta) {
IWL_DEBUG_RATE("leave: No STA priv data to update!\n");
sel->rate_idx = rate_lowest_index(sband, sta);
info->control.rates[0].idx = rate_lowest_index(sband, sta);
return;
}
@ -792,9 +770,10 @@ static void rs_get_rate(void *priv_r, struct ieee80211_supported_band *sband,
rs_sta->last_txrate_idx = index;
if (sband->band == IEEE80211_BAND_5GHZ)
sel->rate_idx = rs_sta->last_txrate_idx - IWL_FIRST_OFDM_RATE;
info->control.rates[0].idx = rs_sta->last_txrate_idx -
IWL_FIRST_OFDM_RATE;
else
sel->rate_idx = rs_sta->last_txrate_idx;
info->control.rates[0].idx = rs_sta->last_txrate_idx;
IWL_DEBUG_RATE("leave: %d\n", index);
}

65
drivers/net/wireless/iwlwifi/iwl-3945.c
View file

@ -261,6 +261,35 @@ static inline const char *iwl3945_get_tx_fail_reason(u32 status)
}
#endif
/*
* get ieee prev rate from rate scale table.
* for A and B mode we need to overright prev
* value
*/
int iwl3945_rs_next_rate(struct iwl3945_priv *priv, int rate)
{
int next_rate = iwl3945_get_prev_ieee_rate(rate);
switch (priv->band) {
case IEEE80211_BAND_5GHZ:
if (rate == IWL_RATE_12M_INDEX)
next_rate = IWL_RATE_9M_INDEX;
else if (rate == IWL_RATE_6M_INDEX)
next_rate = IWL_RATE_6M_INDEX;
break;
/* XXX cannot be invoked in current mac80211 so not a regression
case MODE_IEEE80211B:
if (rate == IWL_RATE_11M_INDEX_TABLE)
next_rate = IWL_RATE_5M_INDEX_TABLE;
break;
*/
default:
break;
}
return next_rate;
}
/**
* iwl3945_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
@ -308,6 +337,7 @@ static void iwl3945_rx_reply_tx(struct iwl3945_priv *priv,
struct iwl3945_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
u32 status = le32_to_cpu(tx_resp->status);
int rate_idx;
int fail, i;
if ((index >= txq->q.n_bd) || (iwl3945_x2_queue_used(&txq->q, index) == 0)) {
IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
@ -318,9 +348,36 @@ static void iwl3945_rx_reply_tx(struct iwl3945_priv *priv,
}
info = IEEE80211_SKB_CB(txq->txb[txq->q.read_ptr].skb[0]);
memset(&info->status, 0, sizeof(info->status));
ieee80211_tx_info_clear_status(info);
/* Fill the MRR chain with some info about on-chip retransmissions */
rate_idx = iwl3945_hwrate_to_plcp_idx(tx_resp->rate);
if (info->band == IEEE80211_BAND_5GHZ)
rate_idx -= IWL_FIRST_OFDM_RATE;
fail = tx_resp->failure_frame;
for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
int next = iwl3945_rs_next_rate(priv, rate_idx);
info->status.rates[i].idx = rate_idx;
/*
* Put remaining into the last count as best approximation
* of saying exactly what the hardware would have done...
*/
if ((rate_idx == next) || (i == IEEE80211_TX_MAX_RATES - 1)) {
info->status.rates[i].count = fail;
break;
}
info->status.rates[i].count = priv->retry_rate;
fail -= priv->retry_rate;
rate_idx = next;
if (fail <= 0)
break;
}
info->status.rates[i].count++; /* add final attempt */
info->status.retry_count = tx_resp->failure_frame;
/* tx_status->rts_retry_count = tx_resp->failure_rts; */
info->flags |= ((status & TX_STATUS_MSK) == TX_STATUS_SUCCESS) ?
IEEE80211_TX_STAT_ACK : 0;
@ -329,10 +386,6 @@ static void iwl3945_rx_reply_tx(struct iwl3945_priv *priv,
txq_id, iwl3945_get_tx_fail_reason(status), status,
tx_resp->rate, tx_resp->failure_frame);
rate_idx = iwl3945_hwrate_to_plcp_idx(tx_resp->rate);
if (info->band == IEEE80211_BAND_5GHZ)
rate_idx -= IWL_FIRST_OFDM_RATE;
info->tx_rate_idx = rate_idx;
IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
iwl3945_tx_queue_reclaim(priv, txq_id, index);

2
drivers/net/wireless/iwlwifi/iwl-3945.h
View file

@ -954,6 +954,8 @@ static inline int is_channel_ibss(const struct iwl3945_channel_info *ch)
extern const struct iwl3945_channel_info *iwl3945_get_channel_info(
const struct iwl3945_priv *priv, enum ieee80211_band band, u16 channel);
extern int iwl3945_rs_next_rate(struct iwl3945_priv *priv, int rate);
/* Requires full declaration of iwl3945_priv before including */
#include "iwl-3945-io.h"

8
drivers/net/wireless/iwlwifi/iwl-4965.c
View file

@ -619,10 +619,10 @@ static void iwl4965_gain_computation(struct iwl_priv *priv,
static void iwl4965_rts_tx_cmd_flag(struct ieee80211_tx_info *info,
__le32 *tx_flags)
{
if (info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) {
if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) {
*tx_flags |= TX_CMD_FLG_RTS_MSK;
*tx_flags &= ~TX_CMD_FLG_CTS_MSK;
} else if (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT) {
} else if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
*tx_flags &= ~TX_CMD_FLG_RTS_MSK;
*tx_flags |= TX_CMD_FLG_CTS_MSK;
}
@ -2070,7 +2070,7 @@ static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv,
agg->frame_count, agg->start_idx, idx);
info = IEEE80211_SKB_CB(priv->txq[txq_id].txb[idx].skb[0]);
info->status.retry_count = tx_resp->failure_frame;
info->status.rates[0].count = tx_resp->failure_frame + 1;
info->flags &= ~IEEE80211_TX_CTL_AMPDU;
info->flags |= iwl_is_tx_success(status)?
IEEE80211_TX_STAT_ACK : 0;
@ -2227,7 +2227,7 @@ static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
iwl_txq_check_empty(priv, sta_id, tid, txq_id);
}
} else {
info->status.retry_count = tx_resp->failure_frame;
info->status.rates[0].count = tx_resp->failure_frame + 1;
info->flags |=
iwl_is_tx_success(status) ? IEEE80211_TX_STAT_ACK : 0;
iwl_hwrate_to_tx_control(priv,

8
drivers/net/wireless/iwlwifi/iwl-5000.c
View file

@ -390,8 +390,8 @@ static void iwl5000_chain_noise_reset(struct iwl_priv *priv)
static void iwl5000_rts_tx_cmd_flag(struct ieee80211_tx_info *info,
__le32 *tx_flags)
{
if ((info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) ||
(info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT))
if ((info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) ||
(info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT))
*tx_flags |= TX_CMD_FLG_RTS_CTS_MSK;
else
*tx_flags &= ~TX_CMD_FLG_RTS_CTS_MSK;
@ -1154,7 +1154,7 @@ static int iwl5000_tx_status_reply_tx(struct iwl_priv *priv,
agg->frame_count, agg->start_idx, idx);
info = IEEE80211_SKB_CB(priv->txq[txq_id].txb[idx].skb[0]);
info->status.retry_count = tx_resp->failure_frame;
info->status.rates[0].count = tx_resp->failure_frame + 1;
info->flags &= ~IEEE80211_TX_CTL_AMPDU;
info->flags |= iwl_is_tx_success(status)?
IEEE80211_TX_STAT_ACK : 0;
@ -1307,7 +1307,7 @@ static void iwl5000_rx_reply_tx(struct iwl_priv *priv,
iwl_txq_check_empty(priv, sta_id, tid, txq_id);
}
} else {
info->status.retry_count = tx_resp->failure_frame;
info->status.rates[0].count = tx_resp->failure_frame + 1;
info->flags =
iwl_is_tx_success(status) ? IEEE80211_TX_STAT_ACK : 0;
iwl_hwrate_to_tx_control(priv,

37
drivers/net/wireless/iwlwifi/iwl-agn-rs.c
View file

@ -798,7 +798,7 @@ static void rs_tx_status(void *priv_r, struct ieee80211_supported_band *sband,
!(info->flags & IEEE80211_TX_STAT_AMPDU))
return;
retries = info->status.retry_count;
retries = info->status.rates[0].count - 1;
if (retries > 15)
retries = 15;
@ -830,20 +830,15 @@ static void rs_tx_status(void *priv_r, struct ieee80211_supported_band *sband,
if (priv->band == IEEE80211_BAND_5GHZ)
rs_index -= IWL_FIRST_OFDM_RATE;
if ((info->tx_rate_idx < 0) ||
(tbl_type.is_SGI ^
!!(info->flags & IEEE80211_TX_CTL_SHORT_GI)) ||
(tbl_type.is_fat ^
!!(info->flags & IEEE80211_TX_CTL_40_MHZ_WIDTH)) ||
(tbl_type.is_dup ^
!!(info->flags & IEEE80211_TX_CTL_DUP_DATA)) ||
(tbl_type.ant_type ^ info->antenna_sel_tx) ||
(!!(tx_rate & RATE_MCS_HT_MSK) ^
!!(info->flags & IEEE80211_TX_CTL_OFDM_HT)) ||
(!!(tx_rate & RATE_MCS_GF_MSK) ^
!!(info->flags & IEEE80211_TX_CTL_GREEN_FIELD)) ||
if ((info->status.rates[0].idx < 0) ||
(tbl_type.is_SGI != !!(info->status.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)) ||
(tbl_type.is_fat != !!(info->status.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)) ||
(tbl_type.is_dup != !!(info->status.rates[0].flags & IEEE80211_TX_RC_DUP_DATA)) ||
(tbl_type.ant_type != info->antenna_sel_tx) ||
(!!(tx_rate & RATE_MCS_HT_MSK) != !!(info->status.rates[0].flags & IEEE80211_TX_RC_MCS)) ||
(!!(tx_rate & RATE_MCS_GF_MSK) != !!(info->status.rates[0].flags & IEEE80211_TX_RC_GREEN_FIELD)) ||
(hw->wiphy->bands[priv->band]->bitrates[rs_index].bitrate !=
hw->wiphy->bands[info->band]->bitrates[info->tx_rate_idx].bitrate)) {
hw->wiphy->bands[info->band]->bitrates[info->status.rates[0].idx].bitrate)) {
IWL_DEBUG_RATE("initial rate does not match 0x%x\n", tx_rate);
goto out;
}
@ -2098,15 +2093,17 @@ static void rs_initialize_lq(struct iwl_priv *priv,
return;
}
static void rs_get_rate(void *priv_r, struct ieee80211_supported_band *sband,
struct ieee80211_sta *sta, void *priv_sta,
struct sk_buff *skb, struct rate_selection *sel)
static void rs_get_rate(void *priv_r, struct ieee80211_sta *sta, void *priv_sta,
struct ieee80211_tx_rate_control *txrc)
{
int i;
struct sk_buff *skb = txrc->skb;
struct ieee80211_supported_band *sband = txrc->sband;
struct iwl_priv *priv = (struct iwl_priv *)priv_r;
struct ieee80211_conf *conf = &priv->hw->conf;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
__le16 fc;
struct iwl_lq_sta *lq_sta;
@ -2117,7 +2114,7 @@ static void rs_get_rate(void *priv_r, struct ieee80211_supported_band *sband,
fc = hdr->frame_control;
if (!ieee80211_is_data(fc) || is_multicast_ether_addr(hdr->addr1) ||
!sta || !priv_sta) {
sel->rate_idx = rate_lowest_index(sband, sta);
info->control.rates[0].idx = rate_lowest_index(sband, sta);
return;
}
@ -2143,13 +2140,13 @@ static void rs_get_rate(void *priv_r, struct ieee80211_supported_band *sband,
}
if ((i < 0) || (i > IWL_RATE_COUNT)) {
sel->rate_idx = rate_lowest_index(sband, sta);
info->control.rates[0].idx = rate_lowest_index(sband, sta);
return;
}
if (sband->band == IEEE80211_BAND_5GHZ)
i -= IWL_FIRST_OFDM_RATE;
sel->rate_idx = i;
info->control.rates[0].idx = i;
}
static void *rs_alloc_sta(void *priv_rate, struct ieee80211_sta *sta,

19
drivers/net/wireless/iwlwifi/iwl-core.c
View file

@ -88,26 +88,27 @@ EXPORT_SYMBOL(iwl_rates);
* translate ucode response to mac80211 tx status control values
*/
void iwl_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags,
struct ieee80211_tx_info *control)
struct ieee80211_tx_info *info)
{
int rate_index;
struct ieee80211_tx_rate *r = &info->control.rates[0];
control->antenna_sel_tx =
info->antenna_sel_tx =
((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS);
if (rate_n_flags & RATE_MCS_HT_MSK)
control->flags |= IEEE80211_TX_CTL_OFDM_HT;
r->flags |= IEEE80211_TX_RC_MCS;
if (rate_n_flags & RATE_MCS_GF_MSK)
control->flags |= IEEE80211_TX_CTL_GREEN_FIELD;
r->flags |= IEEE80211_TX_RC_GREEN_FIELD;
if (rate_n_flags & RATE_MCS_FAT_MSK)
control->flags |= IEEE80211_TX_CTL_40_MHZ_WIDTH;
r->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
if (rate_n_flags & RATE_MCS_DUP_MSK)
control->flags |= IEEE80211_TX_CTL_DUP_DATA;
r->flags |= IEEE80211_TX_RC_DUP_DATA;
if (rate_n_flags & RATE_MCS_SGI_MSK)
control->flags |= IEEE80211_TX_CTL_SHORT_GI;
r->flags |= IEEE80211_TX_RC_SHORT_GI;
rate_index = iwl_hwrate_to_plcp_idx(rate_n_flags);
if (control->band == IEEE80211_BAND_5GHZ)
if (info->band == IEEE80211_BAND_5GHZ)
rate_index -= IWL_FIRST_OFDM_RATE;
control->tx_rate_idx = rate_index;
r->idx = rate_index;
}
EXPORT_SYMBOL(iwl_hwrate_to_tx_control);

5
drivers/net/wireless/iwlwifi/iwl3945-base.c
View file

@ -2395,6 +2395,7 @@ static void iwl3945_build_tx_cmd_basic(struct iwl3945_priv *priv,
{
__le16 fc = hdr->frame_control;
__le32 tx_flags = cmd->cmd.tx.tx_flags;
u8 rc_flags = info->control.rates[0].flags;
cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
@ -2421,10 +2422,10 @@ static void iwl3945_build_tx_cmd_basic(struct iwl3945_priv *priv,
tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
}
if (info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) {
if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
tx_flags |= TX_CMD_FLG_RTS_MSK;
tx_flags &= ~TX_CMD_FLG_CTS_MSK;
} else if (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT) {
} else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
tx_flags &= ~TX_CMD_FLG_RTS_MSK;
tx_flags |= TX_CMD_FLG_CTS_MSK;
}

4
drivers/net/wireless/libertas_tf/main.c
View file

@ -592,14 +592,14 @@ EXPORT_SYMBOL_GPL(lbtf_remove_card);
void lbtf_send_tx_feedback(struct lbtf_private *priv, u8 retrycnt, u8 fail)
{
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb);
memset(&info->status, 0, sizeof(info->status));
ieee80211_tx_info_clear_status(info);
/*
* Commented out, otherwise we never go beyond 1Mbit/s using mac80211
* default pid rc algorithm.
*
* info->status.retry_count = MRVL_DEFAULT_RETRIES - retrycnt;
*/
info->status.excessive_retries = fail ? 1 : 0;
if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) && !fail)
info->flags |= IEEE80211_TX_STAT_ACK;
skb_pull(priv->tx_skb, sizeof(struct txpd));

12
drivers/net/wireless/mac80211_hwsim.c
View file

@ -209,7 +209,7 @@ static bool mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
/* TODO: set mactime */
rx_status.freq = data->channel->center_freq;
rx_status.band = data->channel->band;
rx_status.rate_idx = info->tx_rate_idx;
rx_status.rate_idx = info->control.rates[0].idx;
/* TODO: simulate signal strength (and optional packet drop) */
/* Copy skb to all enabled radios that are on the current frequency */
@ -269,13 +269,9 @@ static int mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
if (txi->control.sta)
hwsim_check_sta_magic(txi->control.sta);
memset(&txi->status, 0, sizeof(txi->status));
if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK)) {
if (ack)
txi->flags |= IEEE80211_TX_STAT_ACK;
else
txi->status.excessive_retries = 1;
}
ieee80211_tx_info_clear_status(txi);
if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
txi->flags |= IEEE80211_TX_STAT_ACK;
ieee80211_tx_status_irqsafe(hw, skb);
return NETDEV_TX_OK;
}

26
drivers/net/wireless/p54/p54common.c
View file

@ -548,7 +548,7 @@ static void p54_rx_frame_sent(struct ieee80211_hw *dev, struct sk_buff *skb)
spin_lock_irqsave(&priv->tx_queue.lock, flags);
while (entry != (struct sk_buff *)&priv->tx_queue) {
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(entry);
range = (void *)info->driver_data;
range = (void *)info->rate_driver_data;
if (range->start_addr == addr) {
struct p54_control_hdr *entry_hdr;
struct p54_tx_control_allocdata *entry_data;
@ -559,7 +559,7 @@ static void p54_rx_frame_sent(struct ieee80211_hw *dev, struct sk_buff *skb)
struct memrecord *mr;
ni = IEEE80211_SKB_CB(entry->next);
mr = (struct memrecord *)ni->driver_data;
mr = (struct memrecord *)ni->rate_driver_data;
freed = mr->start_addr - last_addr;
} else
freed = priv->rx_end - last_addr;
@ -568,7 +568,7 @@ static void p54_rx_frame_sent(struct ieee80211_hw *dev, struct sk_buff *skb)
__skb_unlink(entry, &priv->tx_queue);
spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
memset(&info->status, 0, sizeof(info->status));
ieee80211_tx_info_clear_status(info);
entry_hdr = (struct p54_control_hdr *) entry->data;
entry_data = (struct p54_tx_control_allocdata *) entry_hdr->data;
if ((entry_hdr->magic1 & cpu_to_le16(0x4000)) != 0)
@ -578,10 +578,8 @@ static void p54_rx_frame_sent(struct ieee80211_hw *dev, struct sk_buff *skb)
if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
if (!(payload->status & 0x01))
info->flags |= IEEE80211_TX_STAT_ACK;
else
info->status.excessive_retries = 1;
}
info->status.retry_count = payload->retries - 1;
info->status.rates[0].count = payload->retries;
info->status.ack_signal = p54_rssi_to_dbm(dev,
le16_to_cpu(payload->ack_rssi));
skb_pull(entry, sizeof(*hdr) + pad + sizeof(*entry_data));
@ -699,7 +697,7 @@ static void p54_assign_address(struct ieee80211_hw *dev, struct sk_buff *skb,
while (left--) {
u32 hole_size;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(entry);
struct memrecord *range = (void *)info->driver_data;
struct memrecord *range = (void *)info->rate_driver_data;
hole_size = range->start_addr - last_addr;
if (!target_skb && hole_size >= len) {
target_skb = entry->prev;
@ -715,7 +713,7 @@ static void p54_assign_address(struct ieee80211_hw *dev, struct sk_buff *skb,
largest_hole = max(largest_hole, priv->rx_end - last_addr - len);
if (!skb_queue_empty(&priv->tx_queue)) {
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(target_skb);
struct memrecord *range = (void *)info->driver_data;
struct memrecord *range = (void *)info->rate_driver_data;
target_addr = range->end_addr;
}
} else
@ -723,7 +721,7 @@ static void p54_assign_address(struct ieee80211_hw *dev, struct sk_buff *skb,
if (skb) {
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct memrecord *range = (void *)info->driver_data;
struct memrecord *range = (void *)info->rate_driver_data;
range->start_addr = target_addr;
range->end_addr = target_addr + len;
__skb_queue_after(&priv->tx_queue, target_skb, skb);
@ -806,6 +804,7 @@ static int p54_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
size_t padding, len;
u8 rate;
u8 cts_rate = 0x20;
u8 rc_flags;
current_queue = &priv->tx_stats[skb_get_queue_mapping(skb) + 4];
if (unlikely(current_queue->len > current_queue->limit))
@ -828,18 +827,19 @@ static int p54_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
hdr->magic1 = cpu_to_le16(0x0010);
hdr->len = cpu_to_le16(len);
hdr->type = (info->flags & IEEE80211_TX_CTL_NO_ACK) ? 0 : cpu_to_le16(1);
hdr->retry1 = hdr->retry2 = info->control.retry_limit;
hdr->retry1 = hdr->retry2 = info->control.rates[0].count;
/* TODO: add support for alternate retry TX rates */
rate = ieee80211_get_tx_rate(dev, info)->hw_value;
if (info->flags & IEEE80211_TX_CTL_SHORT_PREAMBLE) {
rc_flags = info->control.rates[0].flags;
if (rc_flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) {
rate |= 0x10;
cts_rate |= 0x10;
}
if (info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) {
if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
rate |= 0x40;
cts_rate |= ieee80211_get_rts_cts_rate(dev, info)->hw_value;
} else if (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT) {
} else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
rate |= 0x20;
cts_rate |= ieee80211_get_rts_cts_rate(dev, info)->hw_value;
}

14
drivers/net/wireless/rt2x00/rt2x00dev.c
View file

@ -498,7 +498,9 @@ void rt2x00lib_txdone(struct queue_entry *entry,
{
struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(entry->skb);
struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
enum data_queue_qid qid = skb_get_queue_mapping(entry->skb);
u8 rate_idx, rate_flags;
/*
* Unmap the skb.
@ -528,14 +530,18 @@ void rt2x00lib_txdone(struct queue_entry *entry,
rt2x00dev->link.qual.tx_failed +=
test_bit(TXDONE_FAILURE, &txdesc->flags);
rate_idx = skbdesc->tx_rate_idx;
rate_flags = skbdesc->tx_rate_flags;
/*
* Initialize TX status
*/
memset(&tx_info->status, 0, sizeof(tx_info->status));
tx_info->status.ack_signal = 0;
tx_info->status.excessive_retries =
test_bit(TXDONE_EXCESSIVE_RETRY, &txdesc->flags);
tx_info->status.retry_count = txdesc->retry;
tx_info->status.rates[0].idx = rate_idx;
tx_info->status.rates[0].flags = rate_flags;
tx_info->status.rates[0].count = txdesc->retry + 1;
tx_info->status.rates[1].idx = -1; /* terminate */
if (!(tx_info->flags & IEEE80211_TX_CTL_NO_ACK)) {
if (test_bit(TXDONE_SUCCESS, &txdesc->flags))
@ -544,7 +550,7 @@ void rt2x00lib_txdone(struct queue_entry *entry,
rt2x00dev->low_level_stats.dot11ACKFailureCount++;
}
if (tx_info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) {
if (rate_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
if (test_bit(TXDONE_SUCCESS, &txdesc->flags))
rt2x00dev->low_level_stats.dot11RTSSuccessCount++;
else if (test_bit(TXDONE_FAILURE, &txdesc->flags))

14
drivers/net/wireless/rt2x00/rt2x00mac.c
View file

@ -39,7 +39,7 @@ static int rt2x00mac_tx_rts_cts(struct rt2x00_dev *rt2x00dev,
unsigned int data_length;
int retval = 0;
if (tx_info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT)
if (tx_info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
data_length = sizeof(struct ieee80211_cts);
else
data_length = sizeof(struct ieee80211_rts);
@ -64,11 +64,11 @@ static int rt2x00mac_tx_rts_cts(struct rt2x00_dev *rt2x00dev,
*/
memcpy(skb->cb, frag_skb->cb, sizeof(skb->cb));
rts_info = IEEE80211_SKB_CB(skb);
rts_info->flags &= ~IEEE80211_TX_CTL_USE_RTS_CTS;
rts_info->flags &= ~IEEE80211_TX_CTL_USE_CTS_PROTECT;
rts_info->control.rates[0].flags &= ~IEEE80211_TX_RC_USE_RTS_CTS;
rts_info->control.rates[0].flags &= ~IEEE80211_TX_RC_USE_CTS_PROTECT;
rts_info->flags &= ~IEEE80211_TX_CTL_REQ_TX_STATUS;
if (tx_info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT)
if (tx_info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
rts_info->flags |= IEEE80211_TX_CTL_NO_ACK;
else
rts_info->flags &= ~IEEE80211_TX_CTL_NO_ACK;
@ -84,7 +84,7 @@ static int rt2x00mac_tx_rts_cts(struct rt2x00_dev *rt2x00dev,
data_length += rt2x00crypto_tx_overhead(tx_info);
#endif /* CONFIG_RT2X00_LIB_CRYPTO */
if (tx_info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT)
if (tx_info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
ieee80211_ctstoself_get(rt2x00dev->hw, tx_info->control.vif,
frag_skb->data, data_length, tx_info,
(struct ieee80211_cts *)(skb->data));
@ -146,8 +146,8 @@ int rt2x00mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
* inside the hardware.
*/
frame_control = le16_to_cpu(ieee80211hdr->frame_control);
if ((tx_info->flags & (IEEE80211_TX_CTL_USE_RTS_CTS |
IEEE80211_TX_CTL_USE_CTS_PROTECT)) &&
if ((tx_info->control.rates[0].flags & (IEEE80211_TX_RC_USE_RTS_CTS |
IEEE80211_TX_RC_USE_CTS_PROTECT)) &&
!rt2x00dev->ops->hw->set_rts_threshold) {
if (rt2x00queue_available(queue) <= 1)
goto exit_fail;

22
drivers/net/wireless/rt2x00/rt2x00queue.c
View file

@ -230,8 +230,15 @@ static void rt2x00queue_create_tx_descriptor(struct queue_entry *entry,
/*
* Determine retry information.
*/
txdesc->retry_limit = tx_info->control.retry_limit;
if (tx_info->flags & IEEE80211_TX_CTL_LONG_RETRY_LIMIT)
txdesc->retry_limit = tx_info->control.rates[0].count - 1;
/*
* XXX: If at this point we knew whether the HW is going to use
* the RETRY_MODE bit or the retry_limit (currently all
* use the RETRY_MODE bit) we could do something like b43
* does, set the RETRY_MODE bit when the RC algorithm is
* requesting more than the long retry limit.
*/
if (tx_info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS)
__set_bit(ENTRY_TXD_RETRY_MODE, &txdesc->flags);
/*
@ -371,10 +378,12 @@ static void rt2x00queue_write_tx_descriptor(struct queue_entry *entry,
int rt2x00queue_write_tx_frame(struct data_queue *queue, struct sk_buff *skb)
{
struct ieee80211_tx_info *tx_info;
struct queue_entry *entry = rt2x00queue_get_entry(queue, Q_INDEX);
struct txentry_desc txdesc;
struct skb_frame_desc *skbdesc;
unsigned int iv_len = 0;
u8 rate_idx, rate_flags;
if (unlikely(rt2x00queue_full(queue)))
return -EINVAL;
@ -399,13 +408,18 @@ int rt2x00queue_write_tx_frame(struct data_queue *queue, struct sk_buff *skb)
iv_len = IEEE80211_SKB_CB(skb)->control.hw_key->iv_len;
/*
* All information is retreived from the skb->cb array,
* All information is retrieved from the skb->cb array,
* now we should claim ownership of the driver part of that
* array.
* array, preserving the bitrate index and flags.
*/
tx_info = IEEE80211_SKB_CB(skb);
rate_idx = tx_info->control.rates[0].idx;
rate_flags = tx_info->control.rates[0].flags;
skbdesc = get_skb_frame_desc(entry->skb);
memset(skbdesc, 0, sizeof(*skbdesc));
skbdesc->entry = entry;
skbdesc->tx_rate_idx = rate_idx;
skbdesc->tx_rate_flags = rate_flags;
/*
* When hardware encryption is supported, and this frame

9
drivers/net/wireless/rt2x00/rt2x00queue.h
View file

@ -104,6 +104,8 @@ enum skb_frame_desc_flags {
*
* @flags: Frame flags, see &enum skb_frame_desc_flags.
* @desc_len: Length of the frame descriptor.
* @tx_rate_idx: the index of the TX rate, used for TX status reporting
* @tx_rate_flags: the TX rate flags, used for TX status reporting
* @desc: Pointer to descriptor part of the frame.
* Note that this pointer could point to something outside
* of the scope of the skb->data pointer.
@ -113,9 +115,12 @@ enum skb_frame_desc_flags {
* @entry: The entry to which this sk buffer belongs.
*/
struct skb_frame_desc {
unsigned int flags;
u8 flags;
u8 desc_len;
u8 tx_rate_idx;
u8 tx_rate_flags;
unsigned int desc_len;
void *desc;
__le32 iv;

28
drivers/net/wireless/rtl8180_dev.c
View file

@ -182,15 +182,13 @@ static void rtl8180_handle_tx(struct ieee80211_hw *dev, unsigned int prio)
skb->len, PCI_DMA_TODEVICE);
info = IEEE80211_SKB_CB(skb);
memset(&info->status, 0, sizeof(info->status));
ieee80211_tx_info_clear_status(info);
if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
if (flags & RTL818X_TX_DESC_FLAG_TX_OK)
info->flags |= IEEE80211_TX_STAT_ACK;
else
info->status.excessive_retries = 1;
}
info->status.retry_count = flags & 0xFF;
if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) &&
(flags & RTL818X_TX_DESC_FLAG_TX_OK))
info->flags |= IEEE80211_TX_STAT_ACK;
info->status.rates[0].count = (flags & 0xFF) + 1;
ieee80211_tx_status_irqsafe(dev, skb);
if (ring->entries - skb_queue_len(&ring->queue) == 2)
@ -243,6 +241,7 @@ static int rtl8180_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
unsigned int idx, prio;
dma_addr_t mapping;
u32 tx_flags;
u8 rc_flags;
u16 plcp_len = 0;
__le16 rts_duration = 0;
@ -261,15 +260,16 @@ static int rtl8180_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
tx_flags |= RTL818X_TX_DESC_FLAG_DMA |
RTL818X_TX_DESC_FLAG_NO_ENC;
if (info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) {
rc_flags = info->control.rates[0].flags;
if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
tx_flags |= RTL818X_TX_DESC_FLAG_RTS;
tx_flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
} else if (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT) {
} else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
tx_flags |= RTL818X_TX_DESC_FLAG_CTS;
tx_flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
}
if (info->flags & IEEE80211_TX_CTL_USE_RTS_CTS)
if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS)
rts_duration = ieee80211_rts_duration(dev, priv->vif, skb->len,
info);
@ -292,9 +292,9 @@ static int rtl8180_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
entry->plcp_len = cpu_to_le16(plcp_len);
entry->tx_buf = cpu_to_le32(mapping);
entry->frame_len = cpu_to_le32(skb->len);
entry->flags2 = info->control.retries[0].rate_idx >= 0 ?
entry->flags2 = info->control.rates[1].idx >= 0 ?
ieee80211_get_alt_retry_rate(dev, info, 0)->bitrate << 4 : 0;
entry->retry_limit = info->control.retry_limit;
entry->retry_limit = info->control.rates[0].count;
entry->flags = cpu_to_le32(tx_flags);
__skb_queue_tail(&ring->queue, skb);
if (ring->entries - skb_queue_len(&ring->queue) < 2)
@ -855,7 +855,7 @@ static int __devinit rtl8180_probe(struct pci_dev *pdev,
priv = dev->priv;
priv->pdev = pdev;
dev->max_altrates = 1;
dev->max_rates = 2;
SET_IEEE80211_DEV(dev, &pdev->dev);
pci_set_drvdata(pdev, dev);

18
drivers/net/wireless/rtl8187_dev.c
View file

@ -160,13 +160,13 @@ static void rtl8187_tx_cb(struct urb *urb)
{
struct sk_buff *skb = (struct sk_buff *)urb->context;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_hw *hw = info->driver_data[0];
struct ieee80211_hw *hw = info->rate_driver_data[0];
struct rtl8187_priv *priv = hw->priv;
usb_free_urb(info->driver_data[1]);
usb_free_urb(info->rate_driver_data[1]);
skb_pull(skb, priv->is_rtl8187b ? sizeof(struct rtl8187b_tx_hdr) :
sizeof(struct rtl8187_tx_hdr));
memset(&info->status, 0, sizeof(info->status));
ieee80211_tx_info_clear_status(info);
info->flags |= IEEE80211_TX_STAT_ACK;
ieee80211_tx_status_irqsafe(hw, skb);
}
@ -194,12 +194,12 @@ static int rtl8187_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
flags |= ieee80211_get_tx_rate(dev, info)->hw_value << 24;
if (ieee80211_has_morefrags(((struct ieee80211_hdr *)skb->data)->frame_control))
flags |= RTL818X_TX_DESC_FLAG_MOREFRAG;
if (info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) {
if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) {
flags |= RTL818X_TX_DESC_FLAG_RTS;
flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
rts_dur = ieee80211_rts_duration(dev, priv->vif,
skb->len, info);
} else if (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT) {
} else if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
flags |= RTL818X_TX_DESC_FLAG_CTS;
flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
}
@ -210,7 +210,7 @@ static int rtl8187_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
hdr->flags = cpu_to_le32(flags);
hdr->len = 0;
hdr->rts_duration = rts_dur;
hdr->retry = cpu_to_le32(info->control.retry_limit << 8);
hdr->retry = cpu_to_le32((info->control.rates[0].count - 1) << 8);
buf = hdr;
ep = 2;
@ -228,7 +228,7 @@ static int rtl8187_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
memset(hdr, 0, sizeof(*hdr));
hdr->flags = cpu_to_le32(flags);
hdr->rts_duration = rts_dur;
hdr->retry = cpu_to_le32(info->control.retry_limit << 8);
hdr->retry = cpu_to_le32((info->control.rates[0].count - 1) << 8);
hdr->tx_duration =
ieee80211_generic_frame_duration(dev, priv->vif,
skb->len, txrate);
@ -240,8 +240,8 @@ static int rtl8187_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
ep = epmap[skb_get_queue_mapping(skb)];
}
info->driver_data[0] = dev;
info->driver_data[1] = urb;
info->rate_driver_data[0] = dev;
info->rate_driver_data[1] = urb;
usb_fill_bulk_urb(urb, priv->udev, usb_sndbulkpipe(priv->udev, ep),
buf, skb->len, rtl8187_tx_cb, skb);

32
drivers/net/wireless/zd1211rw/zd_mac.c
View file

@ -296,15 +296,14 @@ static void zd_op_stop(struct ieee80211_hw *hw)
* If no status information has been requested, the skb is freed.
*/
static void tx_status(struct ieee80211_hw *hw, struct sk_buff *skb,
u32 flags, int ackssi, bool success)
int ackssi, bool success)
{
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
memset(&info->status, 0, sizeof(info->status));
ieee80211_tx_info_clear_status(info);
if (!success)
info->status.excessive_retries = 1;
info->flags |= flags;
if (success)
info->flags |= IEEE80211_TX_STAT_ACK;
info->status.ack_signal = ackssi;
ieee80211_tx_status_irqsafe(hw, skb);
}
@ -326,7 +325,7 @@ void zd_mac_tx_failed(struct ieee80211_hw *hw)
if (skb == NULL)
return;
tx_status(hw, skb, 0, 0, 0);
tx_status(hw, skb, 0, 0);
}
/**
@ -342,12 +341,12 @@ void zd_mac_tx_failed(struct ieee80211_hw *hw)
void zd_mac_tx_to_dev(struct sk_buff *skb, int error)
{
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_hw *hw = info->driver_data[0];
struct ieee80211_hw *hw = info->rate_driver_data[0];
skb_pull(skb, sizeof(struct zd_ctrlset));
if (unlikely(error ||
(info->flags & IEEE80211_TX_CTL_NO_ACK))) {
tx_status(hw, skb, 0, 0, !error);
tx_status(hw, skb, 0, !error);
} else {
struct sk_buff_head *q =
&zd_hw_mac(hw)->ack_wait_queue;
@ -406,7 +405,8 @@ static int zd_calc_tx_length_us(u8 *service, u8 zd_rate, u16 tx_length)
}
static void cs_set_control(struct zd_mac *mac, struct zd_ctrlset *cs,
struct ieee80211_hdr *header, u32 flags)
struct ieee80211_hdr *header,
struct ieee80211_tx_info *info)
{
/*
* CONTROL TODO:
@ -417,7 +417,7 @@ static void cs_set_control(struct zd_mac *mac, struct zd_ctrlset *cs,
cs->control = 0;
/* First fragment */
if (flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
cs->control |= ZD_CS_NEED_RANDOM_BACKOFF;
/* Multicast */
@ -428,10 +428,10 @@ static void cs_set_control(struct zd_mac *mac, struct zd_ctrlset *cs,
if (ieee80211_is_pspoll(header->frame_control))
cs->control |= ZD_CS_PS_POLL_FRAME;
if (flags & IEEE80211_TX_CTL_USE_RTS_CTS)
if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS)
cs->control |= ZD_CS_RTS;
if (flags & IEEE80211_TX_CTL_USE_CTS_PROTECT)
if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
cs->control |= ZD_CS_SELF_CTS;
/* FIXME: Management frame? */
@ -517,12 +517,12 @@ static int fill_ctrlset(struct zd_mac *mac,
txrate = ieee80211_get_tx_rate(mac->hw, info);
cs->modulation = txrate->hw_value;
if (info->flags & IEEE80211_TX_CTL_SHORT_PREAMBLE)
if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
cs->modulation = txrate->hw_value_short;
cs->tx_length = cpu_to_le16(frag_len);
cs_set_control(mac, cs, hdr, info->flags);
cs_set_control(mac, cs, hdr, info);
packet_length = frag_len + sizeof(struct zd_ctrlset) + 10;
ZD_ASSERT(packet_length <= 0xffff);
@ -577,7 +577,7 @@ static int zd_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
if (r)
return r;
info->driver_data[0] = hw;
info->rate_driver_data[0] = hw;
r = zd_usb_tx(&mac->chip.usb, skb);
if (r)
@ -618,7 +618,7 @@ static int filter_ack(struct ieee80211_hw *hw, struct ieee80211_hdr *rx_hdr,
if (likely(!compare_ether_addr(tx_hdr->addr2, rx_hdr->addr1)))
{
__skb_unlink(skb, q);
tx_status(hw, skb, IEEE80211_TX_STAT_ACK, stats->signal, 1);
tx_status(hw, skb, stats->signal, 1);
goto out;
}
}

2
drivers/net/wireless/zd1211rw/zd_usb.c
View file

@ -907,7 +907,7 @@ static void tx_urb_complete(struct urb *urb)
* it might be freed by zd_mac_tx_to_dev or mac80211)
*/
info = IEEE80211_SKB_CB(skb);
usb = &zd_hw_mac(info->driver_data[0])->chip.usb;
usb = &zd_hw_mac(info->rate_driver_data[0])->chip.usb;
zd_mac_tx_to_dev(skb, urb->status);
free_tx_urb(usb, urb);
tx_dec_submitted_urbs(usb);

250
include/net/mac80211.h
View file

@ -214,29 +214,24 @@ struct ieee80211_bss_conf {
* These flags are used with the @flags member of &ieee80211_tx_info.
*
* @IEEE80211_TX_CTL_REQ_TX_STATUS: request TX status callback for this frame.
* @IEEE80211_TX_CTL_USE_RTS_CTS: use RTS-CTS before sending frame
* @IEEE80211_TX_CTL_USE_CTS_PROTECT: use CTS protection for the frame (e.g.,
* for combined 802.11g / 802.11b networks)
* @IEEE80211_TX_CTL_ASSIGN_SEQ: The driver has to assign a sequence
* number to this frame, taking care of not overwriting the fragment
* number and increasing the sequence number only when the
* IEEE80211_TX_CTL_FIRST_FRAGMENT flag is set. mac80211 will properly
* assign sequence numbers to QoS-data frames but cannot do so correctly
* for non-QoS-data and management frames because beacons need them from
* that counter as well and mac80211 cannot guarantee proper sequencing.
* If this flag is set, the driver should instruct the hardware to
* assign a sequence number to the frame or assign one itself. Cf. IEEE
* 802.11-2007 7.1.3.4.1 paragraph 3. This flag will always be set for
* beacons and always be clear for frames without a sequence number field.
* @IEEE80211_TX_CTL_NO_ACK: tell the low level not to wait for an ack
* @IEEE80211_TX_CTL_RATE_CTRL_PROBE: TBD
* @IEEE80211_TX_CTL_CLEAR_PS_FILT: clear powersave filter for destination
* station
* @IEEE80211_TX_CTL_REQUEUE: TBD
* @IEEE80211_TX_CTL_FIRST_FRAGMENT: this is a first fragment of the frame
* @IEEE80211_TX_CTL_SHORT_PREAMBLE: TBD
* @IEEE80211_TX_CTL_LONG_RETRY_LIMIT: this frame should be send using the
* through set_retry_limit configured long retry value
* @IEEE80211_TX_CTL_SEND_AFTER_DTIM: send this frame after DTIM beacon
* @IEEE80211_TX_CTL_AMPDU: this frame should be sent as part of an A-MPDU
* @IEEE80211_TX_CTL_OFDM_HT: this frame can be sent in HT OFDM rates. number
* of streams when this flag is on can be extracted from antenna_sel_tx,
* so if 1 antenna is marked use SISO, 2 antennas marked use MIMO, n
* antennas marked use MIMO_n.
* @IEEE80211_TX_CTL_GREEN_FIELD: use green field protection for this frame
* @IEEE80211_TX_CTL_40_MHZ_WIDTH: send this frame using 40 Mhz channel width
* @IEEE80211_TX_CTL_DUP_DATA: duplicate data frame on both 20 Mhz channels
* @IEEE80211_TX_CTL_SHORT_GI: send this frame using short guard interval
* @IEEE80211_TX_CTL_INJECTED: TBD
* @IEEE80211_TX_CTL_INJECTED: Frame was injected, internal to mac80211.
* @IEEE80211_TX_STAT_TX_FILTERED: The frame was not transmitted
* because the destination STA was in powersave mode.
* @IEEE80211_TX_STAT_ACK: Frame was acknowledged
@ -244,62 +239,70 @@ struct ieee80211_bss_conf {
* is for the whole aggregation.
* @IEEE80211_TX_STAT_AMPDU_NO_BACK: no block ack was returned,
* so consider using block ack request (BAR).
* @IEEE80211_TX_CTL_ASSIGN_SEQ: The driver has to assign a sequence
* number to this frame, taking care of not overwriting the fragment
* number and increasing the sequence number only when the
* IEEE80211_TX_CTL_FIRST_FRAGMENT flags is set. mac80211 will properly
* assign sequence numbers to QoS-data frames but cannot do so correctly
* for non-QoS-data and management frames because beacons need them from
* that counter as well and mac80211 cannot guarantee proper sequencing.
* If this flag is set, the driver should instruct the hardware to
* assign a sequence number to the frame or assign one itself. Cf. IEEE
* 802.11-2007 7.1.3.4.1 paragraph 3. This flag will always be set for
* beacons always be clear for frames without a sequence number field.
* @IEEE80211_TX_CTL_RATE_CTRL_PROBE: internal to mac80211, can be
* set by rate control algorithms to indicate probe rate, will
* be cleared for fragmented frames (except on the last fragment)
* @IEEE80211_TX_CTL_REQUEUE: REMOVE THIS
*/
enum mac80211_tx_control_flags {
IEEE80211_TX_CTL_REQ_TX_STATUS = BIT(0),
IEEE80211_TX_CTL_USE_RTS_CTS = BIT(2),
IEEE80211_TX_CTL_USE_CTS_PROTECT = BIT(3),
IEEE80211_TX_CTL_NO_ACK = BIT(4),
IEEE80211_TX_CTL_RATE_CTRL_PROBE = BIT(5),
IEEE80211_TX_CTL_CLEAR_PS_FILT = BIT(6),
IEEE80211_TX_CTL_REQUEUE = BIT(7),
IEEE80211_TX_CTL_FIRST_FRAGMENT = BIT(8),
IEEE80211_TX_CTL_SHORT_PREAMBLE = BIT(9),
IEEE80211_TX_CTL_LONG_RETRY_LIMIT = BIT(10),
IEEE80211_TX_CTL_SEND_AFTER_DTIM = BIT(12),
IEEE80211_TX_CTL_AMPDU = BIT(13),
IEEE80211_TX_CTL_OFDM_HT = BIT(14),
IEEE80211_TX_CTL_GREEN_FIELD = BIT(15),
IEEE80211_TX_CTL_40_MHZ_WIDTH = BIT(16),
IEEE80211_TX_CTL_DUP_DATA = BIT(17),
IEEE80211_TX_CTL_SHORT_GI = BIT(18),
IEEE80211_TX_CTL_INJECTED = BIT(19),
IEEE80211_TX_STAT_TX_FILTERED = BIT(20),
IEEE80211_TX_STAT_ACK = BIT(21),
IEEE80211_TX_STAT_AMPDU = BIT(22),
IEEE80211_TX_STAT_AMPDU_NO_BACK = BIT(23),
IEEE80211_TX_CTL_ASSIGN_SEQ = BIT(24),
IEEE80211_TX_CTL_ASSIGN_SEQ = BIT(1),
IEEE80211_TX_CTL_NO_ACK = BIT(2),
IEEE80211_TX_CTL_CLEAR_PS_FILT = BIT(3),
IEEE80211_TX_CTL_FIRST_FRAGMENT = BIT(4),
IEEE80211_TX_CTL_SEND_AFTER_DTIM = BIT(5),
IEEE80211_TX_CTL_AMPDU = BIT(6),
IEEE80211_TX_CTL_INJECTED = BIT(7),
IEEE80211_TX_STAT_TX_FILTERED = BIT(8),
IEEE80211_TX_STAT_ACK = BIT(9),
IEEE80211_TX_STAT_AMPDU = BIT(10),
IEEE80211_TX_STAT_AMPDU_NO_BACK = BIT(11),
IEEE80211_TX_CTL_RATE_CTRL_PROBE = BIT(12),
/* XXX: remove this */
IEEE80211_TX_CTL_REQUEUE = BIT(13),
};
enum mac80211_rate_control_flags {
IEEE80211_TX_RC_USE_RTS_CTS = BIT(0),
IEEE80211_TX_RC_USE_CTS_PROTECT = BIT(1),
IEEE80211_TX_RC_USE_SHORT_PREAMBLE = BIT(2),
/* rate index is an MCS rate number instead of an index */
IEEE80211_TX_RC_MCS = BIT(3),
IEEE80211_TX_RC_GREEN_FIELD = BIT(4),
IEEE80211_TX_RC_40_MHZ_WIDTH = BIT(5),
IEEE80211_TX_RC_DUP_DATA = BIT(6),
IEEE80211_TX_RC_SHORT_GI = BIT(7),
};
#define IEEE80211_TX_INFO_DRIVER_DATA_SIZE \
(sizeof(((struct sk_buff *)0)->cb) - 8)
#define IEEE80211_TX_INFO_DRIVER_DATA_PTRS \
(IEEE80211_TX_INFO_DRIVER_DATA_SIZE / sizeof(void *))
/* there are 40 bytes if you don't need the rateset to be kept */
#define IEEE80211_TX_INFO_DRIVER_DATA_SIZE 40
/* maximum number of alternate rate retry stages */
#define IEEE80211_TX_MAX_ALTRATE 3
/* if you do need the rateset, then you have less space */
#define IEEE80211_TX_INFO_RATE_DRIVER_DATA_SIZE 24
/* maximum number of rate stages */
#define IEEE80211_TX_MAX_RATES 5
/**
* struct ieee80211_tx_altrate - alternate rate selection/status
* struct ieee80211_tx_rate - rate selection/status
*
* @rate_idx: rate index to attempt to send with
* @idx: rate index to attempt to send with
* @flags: rate control flags (&enum mac80211_rate_control_flags)
* @limit: number of retries before fallback
*
* A value of -1 for @idx indicates an invalid rate and, if used
* in an array of retry rates, that no more rates should be tried.
*
* When used for transmit status reporting, the driver should
* always report the rate along with the flags it used.
*/
struct ieee80211_tx_altrate {
s8 rate_idx;
u8 limit;
struct ieee80211_tx_rate {
s8 idx;
u8 count;
u8 flags;
};
/**
@ -314,15 +317,12 @@ struct ieee80211_tx_altrate {
* it may be NULL.
*
* @flags: transmit info flags, defined above
* @band: TBD
* @tx_rate_idx: TBD
* @band: the band to transmit on (use for checking for races)
* @antenna_sel_tx: antenna to use, 0 for automatic diversity
* @control: union for control data
* @status: union for status data
* @driver_data: array of driver_data pointers
* @retry_count: number of retries
* @excessive_retries: set to 1 if the frame was retried many times
* but not acknowledged
* @ampdu_ack_len: number of aggregated frames.
* relevant only if IEEE80211_TX_STATUS_AMPDU was set.
* @ampdu_ack_map: block ack bit map for the aggregation.
@ -333,31 +333,43 @@ struct ieee80211_tx_info {
/* common information */
u32 flags;
u8 band;
s8 tx_rate_idx;
u8 antenna_sel_tx;
/* 1 byte hole */
/* 2 byte hole */
union {
struct {
union {
/* rate control */
struct {
struct ieee80211_tx_rate rates[
IEEE80211_TX_MAX_RATES];
s8 rts_cts_rate_idx;
};
/* only needed before rate control */
unsigned long jiffies;
};
/* NB: vif can be NULL for injected frames */
struct ieee80211_vif *vif;
struct ieee80211_key_conf *hw_key;
struct ieee80211_sta *sta;
unsigned long jiffies;
s8 rts_cts_rate_idx;
u8 retry_limit;
struct ieee80211_tx_altrate retries[IEEE80211_TX_MAX_ALTRATE];
} control;
struct {
struct ieee80211_tx_rate rates[IEEE80211_TX_MAX_RATES];
u8 ampdu_ack_len;
u64 ampdu_ack_map;
int ack_signal;
struct ieee80211_tx_altrate retries[IEEE80211_TX_MAX_ALTRATE + 1];
u8 retry_count;
bool excessive_retries;
u8 ampdu_ack_len;
/* 8 bytes free */
} status;
void *driver_data[IEEE80211_TX_INFO_DRIVER_DATA_PTRS];
struct {
struct ieee80211_tx_rate driver_rates[
IEEE80211_TX_MAX_RATES];
void *rate_driver_data[
IEEE80211_TX_INFO_RATE_DRIVER_DATA_SIZE / sizeof(void *)];
};
void *driver_data[
IEEE80211_TX_INFO_DRIVER_DATA_SIZE / sizeof(void *)];
};
};
@ -366,6 +378,41 @@ static inline struct ieee80211_tx_info *IEEE80211_SKB_CB(struct sk_buff *skb)
return (struct ieee80211_tx_info *)skb->cb;
}
/**
* ieee80211_tx_info_clear_status - clear TX status
*
* @info: The &struct ieee80211_tx_info to be cleared.
*
* When the driver passes an skb back to mac80211, it must report
* a number of things in TX status. This function clears everything
* in the TX status but the rate control information (it does clear
* the count since you need to fill that in anyway).
*
* NOTE: You can only use this function if you do NOT use
* info->driver_data! Use info->rate_driver_data
* instead if you need only the less space that allows.
*/
static inline void
ieee80211_tx_info_clear_status(struct ieee80211_tx_info *info)
{
int i;
BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, status.rates) !=
offsetof(struct ieee80211_tx_info, control.rates));
BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, status.rates) !=
offsetof(struct ieee80211_tx_info, driver_rates));
BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, status.rates) != 8);
/* clear the rate counts */
for (i = 0; i < IEEE80211_TX_MAX_RATES; i++)
info->status.rates[i].count = 0;
BUILD_BUG_ON(
offsetof(struct ieee80211_tx_info, status.ampdu_ack_len) != 23);
memset(&info->status.ampdu_ack_len, 0,
sizeof(struct ieee80211_tx_info) -
offsetof(struct ieee80211_tx_info, status.ampdu_ack_len));
}
/**
* enum mac80211_rx_flags - receive flags
@ -869,8 +916,8 @@ enum ieee80211_hw_flags {
* @sta_data_size: size (in bytes) of the drv_priv data area
* within &struct ieee80211_sta.
*
* @max_altrates: maximum number of alternate rate retry stages
* @max_altrate_tries: maximum number of tries for each stage
* @max_rates: maximum number of alternate rate retry stages
* @max_rate_tries: maximum number of tries for each stage
*/
struct ieee80211_hw {
struct ieee80211_conf conf;
@ -887,8 +934,8 @@ struct ieee80211_hw {
u16 ampdu_queues;
u16 max_listen_interval;
s8 max_signal;
u8 max_altrates;
u8 max_altrate_tries;
u8 max_rates;
u8 max_rate_tries;
};
/**
@ -927,9 +974,9 @@ static inline struct ieee80211_rate *
ieee80211_get_tx_rate(const struct ieee80211_hw *hw,
const struct ieee80211_tx_info *c)
{
if (WARN_ON(c->tx_rate_idx < 0))
if (WARN_ON(c->control.rates[0].idx < 0))
return NULL;
return &hw->wiphy->bands[c->band]->bitrates[c->tx_rate_idx];
return &hw->wiphy->bands[c->band]->bitrates[c->control.rates[0].idx];
}
static inline struct ieee80211_rate *
@ -945,9 +992,9 @@ static inline struct ieee80211_rate *
ieee80211_get_alt_retry_rate(const struct ieee80211_hw *hw,
const struct ieee80211_tx_info *c, int idx)
{
if (c->control.retries[idx].rate_idx < 0)
if (c->control.rates[idx + 1].idx < 0)
return NULL;
return &hw->wiphy->bands[c->band]->bitrates[c->control.retries[idx].rate_idx];
return &hw->wiphy->bands[c->band]->bitrates[c->control.rates[idx + 1].idx];
}
/**
@ -1840,17 +1887,30 @@ struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_hw *hw,
/* Rate control API */
/**
* struct rate_selection - rate information for/from rate control algorithms
* struct ieee80211_tx_rate_control - rate control information for/from RC algo
*
* @rate_idx: selected transmission rate index
* @nonerp_idx: Non-ERP rate to use instead if ERP cannot be used
* @probe_idx: rate for probing (or -1)
* @max_rate_idx: maximum rate index that can be used, this is
* input to the algorithm and will be enforced
* @hw: The hardware the algorithm is invoked for.
* @sband: The band this frame is being transmitted on.
* @bss_conf: the current BSS configuration
* @reported_rate: The rate control algorithm can fill this in to indicate
* which rate should be reported to userspace as the current rate and
* used for rate calculations in the mesh network.
* @rts: whether RTS will be used for this frame because it is longer than the
* RTS threshold
* @short_preamble: whether mac80211 will request short-preamble transmission
* if the selected rate supports it
* @max_rate_idx: user-requested maximum rate (not MCS for now)
*/
struct rate_selection {
s8 rate_idx, nonerp_idx, probe_idx, max_rate_idx;
struct ieee80211_tx_rate_control {
struct ieee80211_hw *hw;
struct ieee80211_supported_band *sband;
struct ieee80211_bss_conf *bss_conf;
struct sk_buff *skb;
struct ieee80211_tx_rate reported_rate;
bool rts, short_preamble;
u8 max_rate_idx;
};
struct rate_control_ops {
@ -1869,10 +1929,8 @@ struct rate_control_ops {
void (*tx_status)(void *priv, struct ieee80211_supported_band *sband,
struct ieee80211_sta *sta, void *priv_sta,
struct sk_buff *skb);
void (*get_rate)(void *priv, struct ieee80211_supported_band *sband,
struct ieee80211_sta *sta, void *priv_sta,
struct sk_buff *skb,
struct rate_selection *sel);
void (*get_rate)(void *priv, struct ieee80211_sta *sta, void *priv_sta,
struct ieee80211_tx_rate_control *txrc);
void (*add_sta_debugfs)(void *priv, void *priv_sta,
struct dentry *dir);

8
net/mac80211/ieee80211_i.h
View file

@ -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 {

54
net/mac80211/main.c
View file

@ -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;

6
net/mac80211/mesh_hwmp.c
View file

@ -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) ;

56
net/mac80211/rate.c
View file

@ -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;
}
if (sta && sdata->force_unicast_rateidx > -1)
sel->rate_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;
}
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)
info->control.rates[0].idx = sdata->force_unicast_rateidx;
else
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)

5
net/mac80211/rate.h
View file

@ -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);

72
net/mac80211/rc80211_minstrel.c
View file

@ -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;

1
net/mac80211/rc80211_pid.h
View file

@ -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 */

27
net/mac80211/rc80211_pid_algo.c
View file

@ -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,

5
net/mac80211/rc80211_pid_debugfs.c
View file

@ -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",

4
net/mac80211/sta_info.h
View file

@ -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];
/*

392
net/mac80211/tx.c
View file

@ -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):
@ -437,47 +444,145 @@ 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;
memset(&txrc, 0, sizeof(txrc));
sband = tx->local->hw.wiphy->bands[tx->channel->band];
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;
len = min_t(int, tx->skb->len + FCS_LEN,
tx->local->fragmentation_threshold);
if (unlikely(tx->rate_idx < 0))
return TX_DROP;
} else
info->control.retries[0].rate_idx = -1;
/* 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;
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;
/* set up RTS protection if desired */
if (tx->local->rts_threshold < IEEE80211_MAX_RTS_THRESHOLD &&
len > tx->local->rts_threshold) {
txrc.rts = rts = true;
}
/*
* 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;
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)
tx->sta->last_tx_rate = txrc.reported_rate;
if (unlikely(!info->control.rates[0].count))
info->control.rates[0].count = 1;
if (is_multicast_ether_addr(hdr->addr1)) {
/*
* XXX: verify the rate is in the basic rateset
*/
return TX_CONTINUE;
}
/*
* 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;
}
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;
}
/*
* 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;
}
/* set up RTS protection if desired */
if (rts)
info->control.rates[i].flags |=
IEEE80211_TX_RC_USE_RTS_CTS;
/* RC is busted */
if (WARN_ON(info->control.rates[i].idx >=
sband->n_bitrates)) {
info->control.rates[i].idx = -1;
continue;
}
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;
}
info->tx_rate_idx = tx->rate_idx;
return TX_CONTINUE;
}
@ -485,91 +590,7 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx)
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];
if (tx->sta)
info->control.sta = &tx->sta->sta;
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 (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;
}
/* 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;
}
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;
/* Do not use multiple retry rates when using RTS/CTS */
info->control.retries[0].rate_idx = -1;
/* Use min(data rate, max base rate) as CTS/RTS rate */
rate = &sband->bitrates[tx->rate_idx];
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;
}
if (baserate >= 0)
info->control.rts_cts_rate_idx = baserate;
else
info->control.rts_cts_rate_idx = 0;
}
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 @@ static int ieee80211_tx(struct net_device *dev, struct sk_buff *skb)
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;
}

4
net/mac80211/wext.c
View file

@ -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;