* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
-/*
- * Implementation of transmit path.
- */
-
#include "core.h"
#define BITS_PER_BYTE 8
* NB: must be called with txq lock held
*/
-static void ath_tx_txqaddbuf(struct ath_softc *sc,
- struct ath_txq *txq, struct list_head *head)
+static void ath_tx_txqaddbuf(struct ath_softc *sc, struct ath_txq *txq,
+ struct list_head *head)
{
struct ath_hal *ah = sc->sc_ah;
struct ath_buf *bf;
+
/*
* Insert the frame on the outbound list and
* pass it on to the hardware.
ath9k_hw_txstart(ah, txq->axq_qnum);
}
-/* Get transmit rate index using rate in Kbps */
-
-static int ath_tx_findindex(const struct ath9k_rate_table *rt, int rate)
+static void ath_tx_complete(struct ath_softc *sc, struct sk_buff *skb,
+ struct ath_xmit_status *tx_status)
{
- int i;
- int ndx = 0;
+ struct ieee80211_hw *hw = sc->hw;
+ struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
+ struct ath_tx_info_priv *tx_info_priv = ATH_TX_INFO_PRIV(tx_info);
- for (i = 0; i < rt->rateCount; i++) {
- if (rt->info[i].rateKbps == rate) {
- ndx = i;
- break;
- }
+ DPRINTF(sc, ATH_DBG_XMIT,
+ "%s: TX complete: skb: %p\n", __func__, skb);
+
+ if (tx_info->flags & IEEE80211_TX_CTL_NO_ACK ||
+ tx_info->flags & IEEE80211_TX_STAT_TX_FILTERED) {
+ kfree(tx_info_priv);
+ tx_info->rate_driver_data[0] = NULL;
+ }
+
+ if (tx_status->flags & ATH_TX_BAR) {
+ tx_info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK;
+ tx_status->flags &= ~ATH_TX_BAR;
+ }
+
+ if (!(tx_status->flags & (ATH_TX_ERROR | ATH_TX_XRETRY))) {
+ /* Frame was ACKed */
+ tx_info->flags |= IEEE80211_TX_STAT_ACK;
}
- return ndx;
+ tx_info->status.rates[0].count = tx_status->retries + 1;
+
+ ieee80211_tx_status(hw, skb);
}
/* Check if it's okay to send out aggregates */
-static int ath_aggr_query(struct ath_softc *sc,
- struct ath_node *an, u8 tidno)
+static int ath_aggr_query(struct ath_softc *sc, struct ath_node *an, u8 tidno)
{
struct ath_atx_tid *tid;
tid = ATH_AN_2_TID(an, tidno);
- if (tid->addba_exchangecomplete || tid->addba_exchangeinprogress)
+ if (tid->state & AGGR_ADDBA_COMPLETE ||
+ tid->state & AGGR_ADDBA_PROGRESS)
return 1;
else
return 0;
}
-static enum ath9k_pkt_type get_hal_packet_type(struct ieee80211_hdr *hdr)
+/* Calculate Atheros packet type from IEEE80211 packet header */
+
+static enum ath9k_pkt_type get_hw_packet_type(struct sk_buff *skb)
{
+ struct ieee80211_hdr *hdr;
enum ath9k_pkt_type htype;
__le16 fc;
+ hdr = (struct ieee80211_hdr *)skb->data;
fc = hdr->frame_control;
- /* Calculate Atheros packet type from IEEE80211 packet header */
-
if (ieee80211_is_beacon(fc))
htype = ATH9K_PKT_TYPE_BEACON;
else if (ieee80211_is_probe_resp(fc))
return htype;
}
-static void fill_min_rates(struct sk_buff *skb, struct ath_tx_control *txctl)
+static bool is_pae(struct sk_buff *skb)
{
struct ieee80211_hdr *hdr;
- struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
- struct ath_tx_info_priv *tx_info_priv;
__le16 fc;
hdr = (struct ieee80211_hdr *)skb->data;
fc = hdr->frame_control;
- /* 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;
- txctl->min_rate = tx_info_priv->min_rate;
- } else if (ieee80211_is_data(fc)) {
+ if (ieee80211_is_data(fc)) {
if (ieee80211_is_nullfunc(fc) ||
- /* Port Access Entity (IEEE 802.1X) */
- (skb->protocol == cpu_to_be16(ETH_P_PAE))) {
- txctl->use_minrate = 1;
- txctl->min_rate = tx_info_priv->min_rate;
+ /* Port Access Entity (IEEE 802.1X) */
+ (skb->protocol == cpu_to_be16(ETH_P_PAE))) {
+ return true;
}
- if (is_multicast_ether_addr(hdr->addr1))
- txctl->mcast_rate = tx_info_priv->min_rate;
}
+ return false;
}
-/* This function will setup additional txctl information, mostly rate stuff */
-/* FIXME: seqno, ps */
-static int ath_tx_prepare(struct ath_softc *sc,
- struct sk_buff *skb,
- struct ath_tx_control *txctl)
+static int get_hw_crypto_keytype(struct sk_buff *skb)
{
- struct ieee80211_hw *hw = sc->hw;
- struct ieee80211_hdr *hdr;
- struct ath_rc_series *rcs;
- struct ath_txq *txq = NULL;
- const struct ath9k_rate_table *rt;
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
- struct ath_tx_info_priv *tx_info_priv;
- int hdrlen;
- u8 rix, antenna;
- __le16 fc;
- u8 *qc;
-
- txctl->dev = sc;
- hdr = (struct ieee80211_hdr *)skb->data;
- hdrlen = ieee80211_get_hdrlen_from_skb(skb);
- fc = hdr->frame_control;
-
- rt = sc->sc_currates;
- BUG_ON(!rt);
-
- /* Fill misc fields */
-
- spin_lock_bh(&sc->node_lock);
- txctl->an = ath_node_get(sc, hdr->addr1);
- /* create a temp node, if the node is not there already */
- if (!txctl->an)
- txctl->an = ath_node_attach(sc, hdr->addr1, 0);
- spin_unlock_bh(&sc->node_lock);
-
- if (ieee80211_is_data_qos(fc)) {
- qc = ieee80211_get_qos_ctl(hdr);
- txctl->tidno = qc[0] & 0xf;
- }
-
- txctl->if_id = 0;
- txctl->frmlen = skb->len + FCS_LEN - (hdrlen & 3);
-
- /* Always try at highest power possible unless the the device
- * was configured by the user to use another power. */
- if (likely(sc->sc_config.txpowlimit == ATH_TXPOWER_MAX))
- txctl->txpower = ATH_TXPOWER_MAX;
- else
- txctl->txpower = sc->sc_config.txpowlimit;
-
- /* Fill Key related fields */
-
- txctl->keytype = ATH9K_KEY_TYPE_CLEAR;
- txctl->keyix = ATH9K_TXKEYIX_INVALID;
if (tx_info->control.hw_key) {
- txctl->keyix = tx_info->control.hw_key->hw_key_idx;
- txctl->frmlen += tx_info->control.hw_key->icv_len;
-
if (tx_info->control.hw_key->alg == ALG_WEP)
- txctl->keytype = ATH9K_KEY_TYPE_WEP;
+ return ATH9K_KEY_TYPE_WEP;
else if (tx_info->control.hw_key->alg == ALG_TKIP)
- txctl->keytype = ATH9K_KEY_TYPE_TKIP;
+ return ATH9K_KEY_TYPE_TKIP;
else if (tx_info->control.hw_key->alg == ALG_CCMP)
- txctl->keytype = ATH9K_KEY_TYPE_AES;
+ return ATH9K_KEY_TYPE_AES;
}
- /* Fill packet type */
-
- txctl->atype = get_hal_packet_type(hdr);
-
- /* Fill qnum */
-
- if (unlikely(txctl->flags & ATH9K_TXDESC_CAB)) {
- txctl->qnum = 0;
- txq = sc->sc_cabq;
- } else {
- txctl->qnum = ath_get_hal_qnum(skb_get_queue_mapping(skb), sc);
- txq = &sc->sc_txq[txctl->qnum];
- }
- spin_lock_bh(&txq->axq_lock);
-
- /* Try to avoid running out of descriptors */
- if (txq->axq_depth >= (ATH_TXBUF - 20) &&
- !(txctl->flags & ATH9K_TXDESC_CAB)) {
- DPRINTF(sc, ATH_DBG_FATAL,
- "%s: TX queue: %d is full, depth: %d\n",
- __func__,
- txctl->qnum,
- txq->axq_depth);
- ieee80211_stop_queue(hw, skb_get_queue_mapping(skb));
- txq->stopped = 1;
- spin_unlock_bh(&txq->axq_lock);
- return -1;
- }
-
- spin_unlock_bh(&txq->axq_lock);
-
- /* Fill rate */
-
- fill_min_rates(skb, txctl);
-
- /* Fill flags */
+ return ATH9K_KEY_TYPE_CLEAR;
+}
- txctl->flags |= ATH9K_TXDESC_CLRDMASK /* needed for crypto errors */
- | ATH9K_TXDESC_INTREQ; /* Generate an interrupt */
+/* Called only when tx aggregation is enabled and HT is supported */
- if (tx_info->flags & IEEE80211_TX_CTL_NO_ACK)
- txctl->flags |= ATH9K_TXDESC_NOACK;
-
- if (tx_info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS)
- txctl->flags |= ATH9K_TXDESC_RTSENA;
+static void assign_aggr_tid_seqno(struct sk_buff *skb,
+ struct ath_buf *bf)
+{
+ struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
+ struct ieee80211_hdr *hdr;
+ struct ath_node *an;
+ struct ath_atx_tid *tid;
+ __le16 fc;
+ u8 *qc;
- /*
- * Setup for rate calculations.
- */
+ if (!tx_info->control.sta)
+ return;
- /* XXX: HACK! */
- tx_info_priv = (struct ath_tx_info_priv *)tx_info->control.vif;
- rcs = tx_info_priv->rcs;
+ an = (struct ath_node *)tx_info->control.sta->drv_priv;
+ hdr = (struct ieee80211_hdr *)skb->data;
+ fc = hdr->frame_control;
- if (ieee80211_is_data(fc) && !txctl->use_minrate) {
+ /* Get tidno */
- /* Enable HT only for DATA frames and not for EAPOL */
- /* XXX why AMPDU only?? */
- txctl->ht = (hw->conf.ht.enabled &&
- (tx_info->flags & IEEE80211_TX_CTL_AMPDU));
+ if (ieee80211_is_data_qos(fc)) {
+ qc = ieee80211_get_qos_ctl(hdr);
+ bf->bf_tidno = qc[0] & 0xf;
+ }
- if (is_multicast_ether_addr(hdr->addr1)) {
- rcs[0].rix = (u8)
- ath_tx_findindex(rt, txctl->mcast_rate);
+ /* Get seqno */
- /*
- * mcast packets are not re-tried.
- */
- rcs[0].tries = 1;
- }
+ if (ieee80211_is_data(fc) && !is_pae(skb)) {
/* For HT capable stations, we save tidno for later use.
* We also override seqno set by upper layer with the one
* in tx aggregation state.
*
- * First, the fragmentation stat is determined.
* If fragmentation is on, the sequence number is
* not overridden, since it has been
* incremented by the fragmentation routine.
+ *
+ * FIXME: check if the fragmentation threshold exceeds
+ * IEEE80211 max.
*/
- if (likely(!(txctl->flags & ATH9K_TXDESC_FRAG_IS_ON)) &&
- txctl->ht && (sc->sc_flags & SC_OP_TXAGGR)) {
- struct ath_atx_tid *tid;
+ tid = ATH_AN_2_TID(an, bf->bf_tidno);
+ hdr->seq_ctrl = cpu_to_le16(tid->seq_next <<
+ IEEE80211_SEQ_SEQ_SHIFT);
+ bf->bf_seqno = tid->seq_next;
+ INCR(tid->seq_next, IEEE80211_SEQ_MAX);
+ }
+}
- tid = ATH_AN_2_TID(txctl->an, txctl->tidno);
+static int setup_tx_flags(struct ath_softc *sc, struct sk_buff *skb,
+ struct ath_txq *txq)
+{
+ struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
+ int flags = 0;
- hdr->seq_ctrl = cpu_to_le16(tid->seq_next <<
- IEEE80211_SEQ_SEQ_SHIFT);
- txctl->seqno = tid->seq_next;
- INCR(tid->seq_next, IEEE80211_SEQ_MAX);
- }
- } else {
- /* for management and control frames,
- * or for NULL and EAPOL frames */
- if (txctl->min_rate)
- rcs[0].rix = ath_rate_findrateix(sc, txctl->min_rate);
- else
- rcs[0].rix = 0;
- rcs[0].tries = ATH_MGT_TXMAXTRY;
- }
- rix = rcs[0].rix;
+ flags |= ATH9K_TXDESC_CLRDMASK; /* needed for crypto errors */
+ flags |= ATH9K_TXDESC_INTREQ;
- if (ieee80211_has_morefrags(fc) ||
- (le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG)) {
- /*
- ** Force hardware to use computed duration for next
- ** fragment by disabling multi-rate retry, which
- ** updates duration based on the multi-rate
- ** duration table.
- */
- rcs[1].tries = rcs[2].tries = rcs[3].tries = 0;
- rcs[1].rix = rcs[2].rix = rcs[3].rix = 0;
- /* reset tries but keep rate index */
- rcs[0].tries = ATH_TXMAXTRY;
- }
+ if (tx_info->flags & IEEE80211_TX_CTL_NO_ACK)
+ flags |= ATH9K_TXDESC_NOACK;
+ if (tx_info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS)
+ flags |= ATH9K_TXDESC_RTSENA;
+
+ return flags;
+}
+
+static struct ath_buf *ath_tx_get_buffer(struct ath_softc *sc)
+{
+ struct ath_buf *bf = NULL;
- if (is_multicast_ether_addr(hdr->addr1)) {
- antenna = sc->sc_mcastantenna + 1;
- sc->sc_mcastantenna = (sc->sc_mcastantenna + 1) & 0x1;
+ spin_lock_bh(&sc->sc_txbuflock);
+
+ if (unlikely(list_empty(&sc->sc_txbuf))) {
+ spin_unlock_bh(&sc->sc_txbuflock);
+ return NULL;
}
- return 0;
+ bf = list_first_entry(&sc->sc_txbuf, struct ath_buf, list);
+ list_del(&bf->list);
+
+ spin_unlock_bh(&sc->sc_txbuflock);
+
+ return bf;
}
/* To complete a chain of buffers associated a frame */
if (bf_isxretried(bf))
tx_status.flags |= ATH_TX_XRETRY;
}
+
/* Unmap this frame */
pci_unmap_single(sc->pdev,
bf->bf_dmacontext,
skb->len,
PCI_DMA_TODEVICE);
/* complete this frame */
- ath_tx_complete(sc, skb, &tx_status, bf->bf_node);
+ ath_tx_complete(sc, skb, &tx_status);
/*
* Return the list of ath_buf of this mpdu to free queue
/* Compute the number of bad frames */
-static int ath_tx_num_badfrms(struct ath_softc *sc,
- struct ath_buf *bf, int txok)
+static int ath_tx_num_badfrms(struct ath_softc *sc, struct ath_buf *bf,
+ int txok)
{
- struct ath_node *an = bf->bf_node;
- int isnodegone = (an->an_flags & ATH_NODE_CLEAN);
struct ath_buf *bf_last = bf->bf_lastbf;
struct ath_desc *ds = bf_last->bf_desc;
u16 seq_st = 0;
int nbad = 0;
int isaggr = 0;
- if (isnodegone || ds->ds_txstat.ts_flags == ATH9K_TX_SW_ABORTED)
+ if (ds->ds_txstat.ts_flags == ATH9K_TX_SW_ABORTED)
return 0;
isaggr = bf_isaggr(bf);
/* Update block ack window */
-static void ath_tx_update_baw(struct ath_softc *sc,
- struct ath_atx_tid *tid, int seqno)
+static void ath_tx_update_baw(struct ath_softc *sc, struct ath_atx_tid *tid,
+ int seqno)
{
int index, cindex;
* width - 0 for 20 MHz, 1 for 40 MHz
* half_gi - to use 4us v/s 3.6 us for symbol time
*/
-
-static u32 ath_pkt_duration(struct ath_softc *sc,
- u8 rix,
- struct ath_buf *bf,
- int width,
- int half_gi,
- bool shortPreamble)
+static u32 ath_pkt_duration(struct ath_softc *sc, u8 rix, struct ath_buf *bf,
+ int width, int half_gi, bool shortPreamble)
{
- const struct ath9k_rate_table *rt = sc->sc_currates;
+ struct ath_rate_table *rate_table = sc->hw_rate_table[sc->sc_curmode];
u32 nbits, nsymbits, duration, nsymbols;
u8 rc;
int streams, pktlen;
pktlen = bf_isaggr(bf) ? bf->bf_al : bf->bf_frmlen;
- rc = rt->info[rix].rateCode;
+ rc = rate_table->info[rix].ratecode;
- /*
- * for legacy rates, use old function to compute packet duration
- */
+ /* for legacy rates, use old function to compute packet duration */
if (!IS_HT_RATE(rc))
- return ath9k_hw_computetxtime(sc->sc_ah,
- rt,
- pktlen,
- rix,
- shortPreamble);
- /*
- * find number of symbols: PLCP + data
- */
+ return ath9k_hw_computetxtime(sc->sc_ah, rate_table, pktlen,
+ rix, shortPreamble);
+
+ /* find number of symbols: PLCP + data */
nbits = (pktlen << 3) + OFDM_PLCP_BITS;
nsymbits = bits_per_symbol[HT_RC_2_MCS(rc)][width];
nsymbols = (nbits + nsymbits - 1) / nsymbits;
else
duration = SYMBOL_TIME_HALFGI(nsymbols);
- /*
- * addup duration for legacy/ht training and signal fields
- */
+ /* addup duration for legacy/ht training and signal fields */
streams = HT_RC_2_STREAMS(rc);
duration += L_STF + L_LTF + L_SIG + HT_SIG + HT_STF + HT_LTF(streams);
+
return duration;
}
static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf)
{
struct ath_hal *ah = sc->sc_ah;
- const struct ath9k_rate_table *rt;
+ struct ath_rate_table *rt;
struct ath_desc *ds = bf->bf_desc;
struct ath_desc *lastds = bf->bf_lastbf->bf_desc;
struct ath9k_11n_rate_series series[4];
- int i, flags, rtsctsena = 0, dynamic_mimops = 0;
+ struct ath_node *an = NULL;
+ struct sk_buff *skb;
+ struct ieee80211_tx_info *tx_info;
+ struct ieee80211_tx_rate *rates;
+ struct ieee80211_hdr *hdr;
+ int i, flags, rtsctsena = 0;
u32 ctsduration = 0;
u8 rix = 0, cix, ctsrate = 0;
- u32 aggr_limit_with_rts = ah->ah_caps.rts_aggr_limit;
- struct ath_node *an = (struct ath_node *) bf->bf_node;
+ __le16 fc;
- /*
- * get the cix for the lowest valid rix.
- */
- rt = sc->sc_currates;
- for (i = 4; i--;) {
- if (bf->bf_rcs[i].tries) {
- rix = bf->bf_rcs[i].rix;
+ memset(series, 0, sizeof(struct ath9k_11n_rate_series) * 4);
+
+ skb = (struct sk_buff *)bf->bf_mpdu;
+ hdr = (struct ieee80211_hdr *)skb->data;
+ fc = hdr->frame_control;
+ tx_info = IEEE80211_SKB_CB(skb);
+ rates = tx_info->control.rates;
+
+ if (tx_info->control.sta)
+ an = (struct ath_node *)tx_info->control.sta->drv_priv;
+
+ if (ieee80211_has_morefrags(fc) ||
+ (le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG)) {
+ rates[1].count = rates[2].count = rates[3].count = 0;
+ rates[1].idx = rates[2].idx = rates[3].idx = 0;
+ rates[0].count = ATH_TXMAXTRY;
+ }
+
+ /* get the cix for the lowest valid rix */
+ rt = sc->hw_rate_table[sc->sc_curmode];
+ for (i = 3; i >= 0; i--) {
+ if (rates[i].count && (rates[i].idx >= 0)) {
+ rix = rates[i].idx;
break;
}
}
+
flags = (bf->bf_flags & (ATH9K_TXDESC_RTSENA | ATH9K_TXDESC_CTSENA));
- cix = rt->info[rix].controlRate;
+ cix = rt->info[rix].ctrl_rate;
/*
- * If 802.11g protection is enabled, determine whether
- * to use RTS/CTS or just CTS. Note that this is only
- * done for OFDM/HT unicast frames.
+ * If 802.11g protection is enabled, determine whether to use RTS/CTS or
+ * just CTS. Note that this is only done for OFDM/HT unicast frames.
*/
- if (sc->sc_protmode != PROT_M_NONE &&
- (rt->info[rix].phy == PHY_OFDM ||
- rt->info[rix].phy == PHY_HT) &&
- (bf->bf_flags & ATH9K_TXDESC_NOACK) == 0) {
+ if (sc->sc_protmode != PROT_M_NONE && !(bf->bf_flags & ATH9K_TXDESC_NOACK)
+ && (rt->info[rix].phy == WLAN_RC_PHY_OFDM ||
+ WLAN_RC_PHY_HT(rt->info[rix].phy))) {
if (sc->sc_protmode == PROT_M_RTSCTS)
flags = ATH9K_TXDESC_RTSENA;
else if (sc->sc_protmode == PROT_M_CTSONLY)
flags = ATH9K_TXDESC_CTSENA;
- cix = rt->info[sc->sc_protrix].controlRate;
+ cix = rt->info[sc->sc_protrix].ctrl_rate;
rtsctsena = 1;
}
- /* For 11n, the default behavior is to enable RTS for
- * hw retried frames. We enable the global flag here and
- * let rate series flags determine which rates will actually
- * use RTS.
+ /* For 11n, the default behavior is to enable RTS for hw retried frames.
+ * We enable the global flag here and let rate series flags determine
+ * which rates will actually use RTS.
*/
if ((ah->ah_caps.hw_caps & ATH9K_HW_CAP_HT) && bf_isdata(bf)) {
- BUG_ON(!an);
- /*
- * 802.11g protection not needed, use our default behavior
- */
+ /* 802.11g protection not needed, use our default behavior */
if (!rtsctsena)
flags = ATH9K_TXDESC_RTSENA;
- /*
- * For dynamic MIMO PS, RTS needs to precede the first aggregate
- * and the second aggregate should have any protection at all.
- */
- if (an->an_smmode == ATH_SM_PWRSAV_DYNAMIC) {
- if (!bf_isaggrburst(bf)) {
- flags = ATH9K_TXDESC_RTSENA;
- dynamic_mimops = 1;
- } else {
- flags = 0;
- }
- }
}
- /*
- * Set protection if aggregate protection on
- */
+ /* Set protection if aggregate protection on */
if (sc->sc_config.ath_aggr_prot &&
(!bf_isaggr(bf) || (bf_isaggr(bf) && bf->bf_al < 8192))) {
flags = ATH9K_TXDESC_RTSENA;
- cix = rt->info[sc->sc_protrix].controlRate;
+ cix = rt->info[sc->sc_protrix].ctrl_rate;
rtsctsena = 1;
}
- /*
- * For AR5416 - RTS cannot be followed by a frame larger than 8K.
- */
- if (bf_isaggr(bf) && (bf->bf_al > aggr_limit_with_rts)) {
- /*
- * Ensure that in the case of SM Dynamic power save
- * while we are bursting the second aggregate the
- * RTS is cleared.
- */
+ /* For AR5416 - RTS cannot be followed by a frame larger than 8K */
+ if (bf_isaggr(bf) && (bf->bf_al > ah->ah_caps.rts_aggr_limit))
flags &= ~(ATH9K_TXDESC_RTSENA);
- }
/*
- * CTS transmit rate is derived from the transmit rate
- * by looking in the h/w rate table. We must also factor
- * in whether or not a short preamble is to be used.
+ * CTS transmit rate is derived from the transmit rate by looking in the
+ * h/w rate table. We must also factor in whether or not a short
+ * preamble is to be used. NB: cix is set above where RTS/CTS is enabled
*/
- /* NB: cix is set above where RTS/CTS is enabled */
- BUG_ON(cix == 0xff);
- ctsrate = rt->info[cix].rateCode |
- (bf_isshpreamble(bf) ? rt->info[cix].shortPreamble : 0);
-
- /*
- * Setup HAL rate series
- */
- memset(series, 0, sizeof(struct ath9k_11n_rate_series) * 4);
+ ctsrate = rt->info[cix].ratecode |
+ (bf_isshpreamble(bf) ? rt->info[cix].short_preamble : 0);
for (i = 0; i < 4; i++) {
- if (!bf->bf_rcs[i].tries)
+ if (!rates[i].count || (rates[i].idx < 0))
continue;
- rix = bf->bf_rcs[i].rix;
+ rix = rates[i].idx;
- series[i].Rate = rt->info[rix].rateCode |
- (bf_isshpreamble(bf) ? rt->info[rix].shortPreamble : 0);
+ series[i].Rate = rt->info[rix].ratecode |
+ (bf_isshpreamble(bf) ? rt->info[rix].short_preamble : 0);
- series[i].Tries = bf->bf_rcs[i].tries;
+ series[i].Tries = rates[i].count;
series[i].RateFlags = (
- (bf->bf_rcs[i].flags & ATH_RC_RTSCTS_FLAG) ?
+ (rates[i].flags & IEEE80211_TX_RC_USE_RTS_CTS) ?
ATH9K_RATESERIES_RTS_CTS : 0) |
- ((bf->bf_rcs[i].flags & ATH_RC_CW40_FLAG) ?
+ ((rates[i].flags & IEEE80211_TX_RC_40_MHZ_WIDTH) ?
ATH9K_RATESERIES_2040 : 0) |
- ((bf->bf_rcs[i].flags & ATH_RC_SGI_FLAG) ?
+ ((rates[i].flags & IEEE80211_TX_RC_SHORT_GI) ?
ATH9K_RATESERIES_HALFGI : 0);
- series[i].PktDuration = ath_pkt_duration(
- sc, rix, bf,
- (bf->bf_rcs[i].flags & ATH_RC_CW40_FLAG) != 0,
- (bf->bf_rcs[i].flags & ATH_RC_SGI_FLAG),
- bf_isshpreamble(bf));
+ series[i].PktDuration = ath_pkt_duration(sc, rix, bf,
+ (rates[i].flags & IEEE80211_TX_RC_40_MHZ_WIDTH) != 0,
+ (rates[i].flags & IEEE80211_TX_RC_SHORT_GI),
+ bf_isshpreamble(bf));
- if ((an->an_smmode == ATH_SM_PWRSAV_STATIC) &&
- (bf->bf_rcs[i].flags & ATH_RC_DS_FLAG) == 0) {
- /*
- * When sending to an HT node that has enabled static
- * SM/MIMO power save, send at single stream rates but
- * use maximum allowed transmit chains per user,
- * hardware, regulatory, or country limits for
- * better range.
- */
+ if (bf_isht(bf) && an)
+ series[i].ChSel = ath_chainmask_sel_logic(sc, an);
+ else
series[i].ChSel = sc->sc_tx_chainmask;
- } else {
- if (bf_isht(bf))
- series[i].ChSel =
- ath_chainmask_sel_logic(sc, an);
- else
- series[i].ChSel = sc->sc_tx_chainmask;
- }
if (rtsctsena)
series[i].RateFlags |= ATH9K_RATESERIES_RTS_CTS;
-
- /*
- * Set RTS for all rates if node is in dynamic powersave
- * mode and we are using dual stream rates.
- */
- if (dynamic_mimops && (bf->bf_rcs[i].flags & ATH_RC_DS_FLAG))
- series[i].RateFlags |= ATH9K_RATESERIES_RTS_CTS;
- }
-
- /*
- * For non-HT devices, calculate RTS/CTS duration in software
- * and disable multi-rate retry.
- */
- if (flags && !(ah->ah_caps.hw_caps & ATH9K_HW_CAP_HT)) {
- /*
- * Compute the transmit duration based on the frame
- * size and the size of an ACK frame. We call into the
- * HAL to do the computation since it depends on the
- * characteristics of the actual PHY being used.
- *
- * NB: CTS is assumed the same size as an ACK so we can
- * use the precalculated ACK durations.
- */
- if (flags & ATH9K_TXDESC_RTSENA) { /* SIFS + CTS */
- ctsduration += bf_isshpreamble(bf) ?
- rt->info[cix].spAckDuration :
- rt->info[cix].lpAckDuration;
- }
-
- ctsduration += series[0].PktDuration;
-
- if ((bf->bf_flags & ATH9K_TXDESC_NOACK) == 0) { /* SIFS + ACK */
- ctsduration += bf_isshpreamble(bf) ?
- rt->info[rix].spAckDuration :
- rt->info[rix].lpAckDuration;
- }
-
- /*
- * Disable multi-rate retry when using RTS/CTS by clearing
- * series 1, 2 and 3.
- */
- memset(&series[1], 0, sizeof(struct ath9k_11n_rate_series) * 3);
}
- /*
- * set dur_update_en for l-sig computation except for PS-Poll frames
- */
- ath9k_hw_set11n_ratescenario(ah, ds, lastds,
- !bf_ispspoll(bf),
- ctsrate,
- ctsduration,
+ /* set dur_update_en for l-sig computation except for PS-Poll frames */
+ ath9k_hw_set11n_ratescenario(ah, ds, lastds, !bf_ispspoll(bf),
+ ctsrate, ctsduration,
series, 4, flags);
+
if (sc->sc_config.ath_aggr_prot && flags)
ath9k_hw_set11n_burstduration(ah, ds, 8192);
}
* Function to send a normal HT (non-AMPDU) frame
* NB: must be called with txq lock held
*/
-
static int ath_tx_send_normal(struct ath_softc *sc,
struct ath_txq *txq,
struct ath_atx_tid *tid,
struct list_head *bf_head)
{
struct ath_buf *bf;
- struct sk_buff *skb;
- struct ieee80211_tx_info *tx_info;
- struct ath_tx_info_priv *tx_info_priv;
BUG_ON(list_empty(bf_head));
bf = list_first_entry(bf_head, struct ath_buf, list);
bf->bf_state.bf_type &= ~BUF_AMPDU; /* regular HT frame */
- skb = (struct sk_buff *)bf->bf_mpdu;
- tx_info = IEEE80211_SKB_CB(skb);
-
- /* 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 */
INCR(tid->seq_start, IEEE80211_SEQ_MAX);
struct list_head *bf_q,
int txok)
{
- struct ath_node *an = bf->bf_node;
- struct ath_atx_tid *tid = ATH_AN_2_TID(an, bf->bf_tidno);
+ struct ath_node *an = NULL;
+ struct sk_buff *skb;
+ struct ieee80211_tx_info *tx_info;
+ struct ath_atx_tid *tid = NULL;
struct ath_buf *bf_last = bf->bf_lastbf;
struct ath_desc *ds = bf_last->bf_desc;
struct ath_buf *bf_next, *bf_lastq = NULL;
u16 seq_st = 0;
u32 ba[WME_BA_BMP_SIZE >> 5];
int isaggr, txfail, txpending, sendbar = 0, needreset = 0;
- int isnodegone = (an->an_flags & ATH_NODE_CLEAN);
+
+ skb = (struct sk_buff *)bf->bf_mpdu;
+ tx_info = IEEE80211_SKB_CB(skb);
+
+ if (tx_info->control.sta) {
+ an = (struct ath_node *)tx_info->control.sta->drv_priv;
+ tid = ATH_AN_2_TID(an, bf->bf_tidno);
+ }
isaggr = bf_isaggr(bf);
if (isaggr) {
/* transmit completion */
} else {
- if (!tid->cleanup_inprogress && !isnodegone &&
+ if (!(tid->state & AGGR_CLEANUP) &&
ds->ds_txstat.ts_flags != ATH9K_TX_SW_ABORTED) {
if (bf->bf_retries < ATH_MAX_SW_RETRIES) {
ath_tx_set_retry(sc, bf);
/* copy descriptor content */
tbf->bf_mpdu = bf_last->bf_mpdu;
- tbf->bf_node = bf_last->bf_node;
tbf->bf_buf_addr = bf_last->bf_buf_addr;
*(tbf->bf_desc) = *(bf_last->bf_desc);
bf = bf_next;
}
- /*
- * node is already gone. no more assocication
- * with the node. the node might have been freed
- * any node acces can result in panic.note tid
- * is part of the node.
- */
- if (isnodegone)
- return;
-
- if (tid->cleanup_inprogress) {
+ if (tid->state & AGGR_CLEANUP) {
/* check to see if we're done with cleaning the h/w queue */
spin_lock_bh(&txq->axq_lock);
if (tid->baw_head == tid->baw_tail) {
- tid->addba_exchangecomplete = 0;
+ tid->state &= ~AGGR_ADDBA_COMPLETE;
tid->addba_exchangeattempts = 0;
spin_unlock_bh(&txq->axq_lock);
- tid->cleanup_inprogress = false;
+ tid->state &= ~AGGR_CLEANUP;
/* send buffered frames as singles */
ath_tx_flush_tid(sc, tid);
return;
}
+static void ath_tx_rc_status(struct ath_buf *bf, struct ath_desc *ds, int nbad)
+{
+ struct sk_buff *skb = (struct sk_buff *)bf->bf_mpdu;
+ struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
+ struct ath_tx_info_priv *tx_info_priv = ATH_TX_INFO_PRIV(tx_info);
+
+ 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 &&
+ (bf->bf_flags & ATH9K_TXDESC_NOACK) == 0) {
+ if (bf_isdata(bf)) {
+ memcpy(&tx_info_priv->tx, &ds->ds_txstat,
+ sizeof(tx_info_priv->tx));
+ tx_info_priv->n_frames = bf->bf_nframes;
+ tx_info_priv->n_bad_frames = nbad;
+ }
+ }
+}
+
/* Process completed xmit descriptors from the specified queue */
-static int ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq)
+static void ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq)
{
struct ath_hal *ah = sc->sc_ah;
struct ath_buf *bf, *lastbf, *bf_held = NULL;
struct list_head bf_head;
- struct ath_desc *ds, *tmp_ds;
- struct sk_buff *skb;
- struct ieee80211_tx_info *tx_info;
- struct ath_tx_info_priv *tx_info_priv;
- int nacked, txok, nbad = 0, isrifs = 0;
+ struct ath_desc *ds;
+ int txok, nbad = 0;
int status;
DPRINTF(sc, ATH_DBG_QUEUE,
txq->axq_qnum, ath9k_hw_gettxbuf(sc->sc_ah, txq->axq_qnum),
txq->axq_link);
- nacked = 0;
for (;;) {
spin_lock_bh(&txq->axq_lock);
if (list_empty(&txq->axq_q)) {
} else {
nbad = ath_tx_num_badfrms(sc, bf, txok);
}
- skb = bf->bf_mpdu;
- tx_info = IEEE80211_SKB_CB(skb);
-
- /* 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 &&
- (bf->bf_flags & ATH9K_TXDESC_NOACK) == 0) {
- if (ds->ds_txstat.ts_status == 0)
- nacked++;
-
- if (bf_isdata(bf)) {
- if (isrifs)
- tmp_ds = bf->bf_rifslast->bf_desc;
- else
- tmp_ds = ds;
- memcpy(&tx_info_priv->tx,
- &tmp_ds->ds_txstat,
- sizeof(tx_info_priv->tx));
- tx_info_priv->n_frames = bf->bf_nframes;
- tx_info_priv->n_bad_frames = nbad;
- }
- }
+
+ ath_tx_rc_status(bf, ds, nbad);
/*
* Complete this transmit unit
ath_txq_schedule(sc, txq);
spin_unlock_bh(&txq->axq_lock);
}
- return nacked;
}
static void ath_tx_stopdma(struct ath_softc *sc, struct ath_txq *txq)
static void ath_drain_txdataq(struct ath_softc *sc, bool retry_tx)
{
struct ath_hal *ah = sc->sc_ah;
- int i;
- int npend = 0;
+ int i, status, npend = 0;
- /* XXX return value */
if (!(sc->sc_flags & SC_OP_INVALID)) {
for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
if (ATH_TXQ_SETUP(sc, i)) {
ath_tx_stopdma(sc, &sc->sc_txq[i]);
-
/* The TxDMA may not really be stopped.
* Double check the hal tx pending count */
npend += ath9k_hw_numtxpending(ah,
- sc->sc_txq[i].axq_qnum);
+ sc->sc_txq[i].axq_qnum);
}
}
}
if (npend) {
- int status;
-
/* TxDMA not stopped, reset the hal */
DPRINTF(sc, ATH_DBG_XMIT,
"%s: Unable to stop TxDMA. Reset HAL!\n", __func__);
*/
static int ath_tx_send_ampdu(struct ath_softc *sc,
- struct ath_txq *txq,
struct ath_atx_tid *tid,
struct list_head *bf_head,
struct ath_tx_control *txctl)
{
struct ath_buf *bf;
- struct sk_buff *skb;
- struct ieee80211_tx_info *tx_info;
- struct ath_tx_info_priv *tx_info_priv;
BUG_ON(list_empty(bf_head));
bf = list_first_entry(bf_head, struct ath_buf, list);
bf->bf_state.bf_type |= BUF_AMPDU;
- bf->bf_seqno = txctl->seqno; /* save seqno and tidno in buffer */
- bf->bf_tidno = txctl->tidno;
/*
* Do not queue to h/w when any of the following conditions is true:
*/
if (!list_empty(&tid->buf_q) || tid->paused ||
!BAW_WITHIN(tid->seq_start, tid->baw_size, bf->bf_seqno) ||
- txq->axq_depth >= ATH_AGGR_MIN_QDEPTH) {
+ txctl->txq->axq_depth >= ATH_AGGR_MIN_QDEPTH) {
/*
* Add this frame to software queue for scheduling later
* for aggregation.
*/
list_splice_tail_init(bf_head, &tid->buf_q);
- ath_tx_queue_tid(txq, tid);
+ ath_tx_queue_tid(txctl->txq, tid);
return 0;
}
- skb = (struct sk_buff *)bf->bf_mpdu;
- tx_info = IEEE80211_SKB_CB(skb);
- /* 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 */
ath_tx_addto_baw(sc, tid, bf);
bf->bf_nframes = 1;
bf->bf_lastbf = bf->bf_lastfrm; /* one single frame */
ath_buf_set_rate(sc, bf);
- ath_tx_txqaddbuf(sc, txq, bf_head);
+ ath_tx_txqaddbuf(sc, txctl->txq, bf_head);
+
return 0;
}
struct ath_buf *bf,
struct ath_atx_tid *tid)
{
- const struct ath9k_rate_table *rt = sc->sc_currates;
+ struct ath_rate_table *rate_table = sc->hw_rate_table[sc->sc_curmode];
struct sk_buff *skb;
struct ieee80211_tx_info *tx_info;
+ struct ieee80211_tx_rate *rates;
struct ath_tx_info_priv *tx_info_priv;
u32 max_4ms_framelen, frame_length;
u16 aggr_limit, legacy = 0, maxampdu;
int i;
-
skb = (struct sk_buff *)bf->bf_mpdu;
tx_info = IEEE80211_SKB_CB(skb);
- tx_info_priv = (struct ath_tx_info_priv *)
- tx_info->control.vif; /* XXX: HACK! */
- memcpy(bf->bf_rcs,
- tx_info_priv->rcs, 4 * sizeof(tx_info_priv->rcs[0]));
+ rates = tx_info->control.rates;
+ tx_info_priv =
+ (struct ath_tx_info_priv *)tx_info->rate_driver_data[0];
/*
* Find the lowest frame length among the rate series that will have a
max_4ms_framelen = ATH_AMPDU_LIMIT_MAX;
for (i = 0; i < 4; i++) {
- if (bf->bf_rcs[i].tries) {
- frame_length = bf->bf_rcs[i].max_4ms_framelen;
-
- if (rt->info[bf->bf_rcs[i].rix].phy != PHY_HT) {
+ if (rates[i].count) {
+ if (!WLAN_RC_PHY_HT(rate_table->info[rates[i].idx].phy)) {
legacy = 1;
break;
}
+ frame_length =
+ rate_table->info[rates[i].idx].max_4ms_framelen;
max_4ms_framelen = min(max_4ms_framelen, frame_length);
}
}
struct ath_buf *bf,
u16 frmlen)
{
- const struct ath9k_rate_table *rt = sc->sc_currates;
+ struct ath_rate_table *rt = sc->hw_rate_table[sc->sc_curmode];
+ struct sk_buff *skb = bf->bf_mpdu;
+ struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
u32 nsymbits, nsymbols, mpdudensity;
u16 minlen;
u8 rc, flags, rix;
if (mpdudensity == 0)
return ndelim;
- rix = bf->bf_rcs[0].rix;
- flags = bf->bf_rcs[0].flags;
- rc = rt->info[rix].rateCode;
- width = (flags & ATH_RC_CW40_FLAG) ? 1 : 0;
- half_gi = (flags & ATH_RC_SGI_FLAG) ? 1 : 0;
+ rix = tx_info->control.rates[0].idx;
+ flags = tx_info->control.rates[0].flags;
+ rc = rt->info[rix].ratecode;
+ width = (flags & IEEE80211_TX_RC_40_MHZ_WIDTH) ? 1 : 0;
+ half_gi = (flags & IEEE80211_TX_RC_SHORT_GI) ? 1 : 0;
if (half_gi)
nsymbols = NUM_SYMBOLS_PER_USEC_HALFGI(mpdudensity);
u16 aggr_limit = 0, al = 0, bpad = 0,
al_delta, h_baw = tid->baw_size / 2;
enum ATH_AGGR_STATUS status = ATH_AGGR_DONE;
- int prev_al = 0, is_ds_rate = 0;
+ int prev_al = 0;
INIT_LIST_HEAD(&bf_head);
BUG_ON(list_empty(&tid->buf_q));
if (!rl) {
aggr_limit = ath_lookup_rate(sc, bf, tid);
rl = 1;
- /*
- * Is rate dual stream
- */
- is_ds_rate =
- (bf->bf_rcs[0].flags & ATH_RC_DS_FLAG) ? 1 : 0;
}
/*
static void ath_tid_drain(struct ath_softc *sc,
struct ath_txq *txq,
- struct ath_atx_tid *tid,
- bool bh_flag)
+ struct ath_atx_tid *tid)
+
{
struct ath_buf *bf;
struct list_head bf_head;
* do not indicate packets while holding txq spinlock.
* unlock is intentional here
*/
- if (likely(bh_flag))
- spin_unlock_bh(&txq->axq_lock);
- else
- spin_unlock(&txq->axq_lock);
+ spin_unlock(&txq->axq_lock);
/* complete this sub-frame */
ath_tx_complete_buf(sc, bf, &bf_head, 0, 0);
- if (likely(bh_flag))
- spin_lock_bh(&txq->axq_lock);
- else
- spin_lock(&txq->axq_lock);
+ spin_lock(&txq->axq_lock);
}
/*
*/
static void ath_txq_drain_pending_buffers(struct ath_softc *sc,
- struct ath_txq *txq,
- bool bh_flag)
+ struct ath_txq *txq)
{
struct ath_atx_ac *ac, *ac_tmp;
struct ath_atx_tid *tid, *tid_tmp;
list_for_each_entry_safe(tid, tid_tmp, &ac->tid_q, list) {
list_del(&tid->list);
tid->sched = false;
- ath_tid_drain(sc, txq, tid, bh_flag);
+ ath_tid_drain(sc, txq, tid);
}
}
}
-static int ath_tx_start_dma(struct ath_softc *sc,
- struct sk_buff *skb,
- struct scatterlist *sg,
- u32 n_sg,
- struct ath_tx_control *txctl)
+static void ath_tx_setup_buffer(struct ath_softc *sc, struct ath_buf *bf,
+ struct sk_buff *skb, struct scatterlist *sg,
+ struct ath_tx_control *txctl)
{
- struct ath_node *an = txctl->an;
- struct ath_buf *bf = NULL;
- struct list_head bf_head;
- struct ath_desc *ds;
- struct ath_hal *ah = sc->sc_ah;
- struct ath_txq *txq;
- struct ath_tx_info_priv *tx_info_priv;
- struct ath_rc_series *rcs;
+ struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
- struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
- __le16 fc = hdr->frame_control;
-
- if (unlikely(txctl->flags & ATH9K_TXDESC_CAB))
- txq = sc->sc_cabq;
- else
- txq = &sc->sc_txq[txctl->qnum];
+ struct ath_tx_info_priv *tx_info_priv;
+ int hdrlen;
+ __le16 fc;
- /* For each sglist entry, allocate an ath_buf for DMA */
- INIT_LIST_HEAD(&bf_head);
- spin_lock_bh(&sc->sc_txbuflock);
- if (unlikely(list_empty(&sc->sc_txbuf))) {
- spin_unlock_bh(&sc->sc_txbuflock);
- return -ENOMEM;
- }
+ tx_info_priv = kzalloc(sizeof(*tx_info_priv), GFP_KERNEL);
+ tx_info->rate_driver_data[0] = tx_info_priv;
+ hdrlen = ieee80211_get_hdrlen_from_skb(skb);
+ fc = hdr->frame_control;
- bf = list_first_entry(&sc->sc_txbuf, struct ath_buf, list);
- list_del(&bf->list);
- spin_unlock_bh(&sc->sc_txbuflock);
+ ATH_TXBUF_RESET(bf);
- list_add_tail(&bf->list, &bf_head);
+ /* Frame type */
- /* set up this buffer */
- ATH_TXBUF_RESET(bf);
- bf->bf_frmlen = txctl->frmlen;
+ bf->bf_frmlen = skb->len + FCS_LEN - (hdrlen & 3);
ieee80211_is_data(fc) ?
(bf->bf_state.bf_type |= BUF_DATA) :
(sc->sc_flags & SC_OP_PREAMBLE_SHORT) ?
(bf->bf_state.bf_type |= BUF_SHORT_PREAMBLE) :
(bf->bf_state.bf_type &= ~BUF_SHORT_PREAMBLE);
+ (sc->hw->conf.ht.enabled && !is_pae(skb) &&
+ (tx_info->flags & IEEE80211_TX_CTL_AMPDU)) ?
+ (bf->bf_state.bf_type |= BUF_HT) :
+ (bf->bf_state.bf_type &= ~BUF_HT);
+
+ bf->bf_flags = setup_tx_flags(sc, skb, txctl->txq);
+
+ /* Crypto */
+
+ bf->bf_keytype = get_hw_crypto_keytype(skb);
+
+ if (bf->bf_keytype != ATH9K_KEY_TYPE_CLEAR) {
+ bf->bf_frmlen += tx_info->control.hw_key->icv_len;
+ bf->bf_keyix = tx_info->control.hw_key->hw_key_idx;
+ } else {
+ bf->bf_keyix = ATH9K_TXKEYIX_INVALID;
+ }
+
+ /* Assign seqno, tidno */
+
+ if (bf_isht(bf) && (sc->sc_flags & SC_OP_TXAGGR))
+ assign_aggr_tid_seqno(skb, bf);
+
+ /* DMA setup */
- bf->bf_flags = txctl->flags;
- bf->bf_keytype = txctl->keytype;
- /* 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];
- bf->bf_rcs[2] = rcs[2];
- bf->bf_rcs[3] = rcs[3];
- bf->bf_node = an;
bf->bf_mpdu = skb;
- bf->bf_buf_addr = sg_dma_address(sg);
+ bf->bf_dmacontext = pci_map_single(sc->pdev, skb->data,
+ skb->len, PCI_DMA_TODEVICE);
+ bf->bf_buf_addr = bf->bf_dmacontext;
+}
+
+/* FIXME: tx power */
+static void ath_tx_start_dma(struct ath_softc *sc, struct ath_buf *bf,
+ struct scatterlist *sg, u32 n_sg,
+ struct ath_tx_control *txctl)
+{
+ struct sk_buff *skb = (struct sk_buff *)bf->bf_mpdu;
+ struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
+ struct ath_node *an = NULL;
+ struct list_head bf_head;
+ struct ath_desc *ds;
+ struct ath_atx_tid *tid;
+ struct ath_hal *ah = sc->sc_ah;
+ int frm_type;
+
+ frm_type = get_hw_packet_type(skb);
+
+ INIT_LIST_HEAD(&bf_head);
+ list_add_tail(&bf->list, &bf_head);
/* setup descriptor */
+
ds = bf->bf_desc;
ds->ds_link = 0;
ds->ds_data = bf->bf_buf_addr;
- /*
- * Save the DMA context in the first ath_buf
- */
- bf->bf_dmacontext = txctl->dmacontext;
+ /* Formulate first tx descriptor with tx controls */
- /*
- * Formulate first tx descriptor with tx controls.
- */
- ath9k_hw_set11n_txdesc(ah,
- ds,
- bf->bf_frmlen, /* frame length */
- txctl->atype, /* Atheros packet type */
- min(txctl->txpower, (u16)60), /* txpower */
- txctl->keyix, /* key cache index */
- txctl->keytype, /* key type */
- txctl->flags); /* flags */
- ath9k_hw_filltxdesc(ah,
- ds,
- sg_dma_len(sg), /* segment length */
- true, /* first segment */
- (n_sg == 1) ? true : false, /* last segment */
- ds); /* first descriptor */
+ ath9k_hw_set11n_txdesc(ah, ds, bf->bf_frmlen, frm_type, MAX_RATE_POWER,
+ bf->bf_keyix, bf->bf_keytype, bf->bf_flags);
+
+ ath9k_hw_filltxdesc(ah, ds,
+ sg_dma_len(sg), /* segment length */
+ true, /* first segment */
+ (n_sg == 1) ? true : false, /* last segment */
+ ds); /* first descriptor */
bf->bf_lastfrm = bf;
- (txctl->ht) ?
- (bf->bf_state.bf_type |= BUF_HT) :
- (bf->bf_state.bf_type &= ~BUF_HT);
- spin_lock_bh(&txq->axq_lock);
+ spin_lock_bh(&txctl->txq->axq_lock);
+
+ if (bf_isht(bf) && (sc->sc_flags & SC_OP_TXAGGR) &&
+ tx_info->control.sta) {
+ an = (struct ath_node *)tx_info->control.sta->drv_priv;
+ tid = ATH_AN_2_TID(an, bf->bf_tidno);
- if (txctl->ht && (sc->sc_flags & SC_OP_TXAGGR)) {
- struct ath_atx_tid *tid = ATH_AN_2_TID(an, txctl->tidno);
- if (ath_aggr_query(sc, an, txctl->tidno)) {
+ if (ath_aggr_query(sc, an, bf->bf_tidno)) {
/*
* Try aggregation if it's a unicast data frame
* and the destination is HT capable.
*/
- ath_tx_send_ampdu(sc, txq, tid, &bf_head, txctl);
+ ath_tx_send_ampdu(sc, tid, &bf_head, txctl);
} else {
/*
- * Send this frame as regular when ADDBA exchange
- * is neither complete nor pending.
+ * Send this frame as regular when ADDBA
+ * exchange is neither complete nor pending.
*/
- ath_tx_send_normal(sc, txq, tid, &bf_head);
+ ath_tx_send_normal(sc, txctl->txq,
+ tid, &bf_head);
}
} else {
bf->bf_lastbf = bf;
bf->bf_nframes = 1;
- ath_buf_set_rate(sc, bf);
- if (ieee80211_is_back_req(fc)) {
- /* This is required for resuming tid
- * during BAR completion */
- bf->bf_tidno = txctl->tidno;
- }
-
- ath_tx_txqaddbuf(sc, txq, &bf_head);
+ ath_buf_set_rate(sc, bf);
+ ath_tx_txqaddbuf(sc, txctl->txq, &bf_head);
}
- spin_unlock_bh(&txq->axq_lock);
- return 0;
+
+ spin_unlock_bh(&txctl->txq->axq_lock);
}
-static void xmit_map_sg(struct ath_softc *sc,
- struct sk_buff *skb,
- struct ath_tx_control *txctl)
+int ath_tx_start(struct ath_softc *sc, struct sk_buff *skb,
+ struct ath_tx_control *txctl)
{
- struct ath_xmit_status tx_status;
- struct ath_atx_tid *tid;
+ struct ath_buf *bf;
struct scatterlist sg;
- txctl->dmacontext = pci_map_single(sc->pdev, skb->data,
- skb->len, PCI_DMA_TODEVICE);
+ /* Check if a tx buffer is available */
+
+ bf = ath_tx_get_buffer(sc);
+ if (!bf) {
+ DPRINTF(sc, ATH_DBG_XMIT, "%s: TX buffers are full\n",
+ __func__);
+ return -1;
+ }
+
+ ath_tx_setup_buffer(sc, bf, skb, &sg, txctl);
+
+ /* Setup S/G */
- /* setup S/G list */
memset(&sg, 0, sizeof(struct scatterlist));
- sg_dma_address(&sg) = txctl->dmacontext;
+ sg_dma_address(&sg) = bf->bf_dmacontext;
sg_dma_len(&sg) = skb->len;
- if (ath_tx_start_dma(sc, skb, &sg, 1, txctl) != 0) {
- /*
- * We have to do drop frame here.
- */
- pci_unmap_single(sc->pdev, txctl->dmacontext,
- skb->len, PCI_DMA_TODEVICE);
-
- tx_status.retries = 0;
- tx_status.flags = ATH_TX_ERROR;
+ ath_tx_start_dma(sc, bf, &sg, 1, txctl);
- if (txctl->ht && (sc->sc_flags & SC_OP_TXAGGR)) {
- /* Reclaim the seqno. */
- tid = ATH_AN_2_TID((struct ath_node *)
- txctl->an, txctl->tidno);
- DECR(tid->seq_next, IEEE80211_SEQ_MAX);
- }
- ath_tx_complete(sc, skb, &tx_status, txctl->an);
- }
+ return 0;
}
/* Initialize TX queue and h/w */
return qnum;
}
+/* Get a transmit queue, if available */
+
+struct ath_txq *ath_test_get_txq(struct ath_softc *sc, struct sk_buff *skb)
+{
+ struct ath_txq *txq = NULL;
+ int qnum;
+
+ qnum = ath_get_hal_qnum(skb_get_queue_mapping(skb), sc);
+ txq = &sc->sc_txq[qnum];
+
+ spin_lock_bh(&txq->axq_lock);
+
+ /* Try to avoid running out of descriptors */
+ if (txq->axq_depth >= (ATH_TXBUF - 20)) {
+ DPRINTF(sc, ATH_DBG_FATAL,
+ "%s: TX queue: %d is full, depth: %d\n",
+ __func__, qnum, txq->axq_depth);
+ ieee80211_stop_queue(sc->hw, skb_get_queue_mapping(skb));
+ txq->stopped = 1;
+ spin_unlock_bh(&txq->axq_lock);
+ return NULL;
+ }
+
+ spin_unlock_bh(&txq->axq_lock);
+
+ return txq;
+}
+
/* Update parameters for a transmit queue */
int ath_txq_update(struct ath_softc *sc, int qnum,
return 0;
}
-int ath_tx_start(struct ath_softc *sc, struct sk_buff *skb)
-{
- struct ath_tx_control txctl;
- int error = 0;
-
- memset(&txctl, 0, sizeof(struct ath_tx_control));
- error = ath_tx_prepare(sc, skb, &txctl);
- if (error == 0)
- /*
- * Start DMA mapping.
- * ath_tx_start_dma() will be called either synchronously
- * or asynchrounsly once DMA is complete.
- */
- xmit_map_sg(sc, skb, &txctl);
- else
- ath_node_put(sc, txctl.an, ATH9K_BH_STATUS_CHANGE);
-
- /* failed packets will be dropped by the caller */
- return error;
-}
-
/* Deferred processing of transmit interrupt */
void ath_tx_tasklet(struct ath_softc *sc)
if (sc->sc_flags & SC_OP_TXAGGR) {
if (!retry_tx) {
spin_lock_bh(&txq->axq_lock);
- ath_txq_drain_pending_buffers(sc, txq,
- ATH9K_BH_STATUS_CHANGE);
+ ath_txq_drain_pending_buffers(sc, txq);
spin_unlock_bh(&txq->axq_lock);
}
}
return sc->sc_txq[qnum].axq_aggr_depth;
}
-/* Check if an ADDBA is required. A valid node must be passed. */
-enum ATH_AGGR_CHECK ath_tx_aggr_check(struct ath_softc *sc,
- struct ath_node *an,
- u8 tidno)
+bool ath_tx_aggr_check(struct ath_softc *sc, struct ath_node *an, u8 tidno)
{
struct ath_atx_tid *txtid;
if (!(sc->sc_flags & SC_OP_TXAGGR))
- return AGGR_NOT_REQUIRED;
+ return false;
- /* ADDBA exchange must be completed before sending aggregates */
txtid = ATH_AN_2_TID(an, tidno);
- if (txtid->addba_exchangecomplete)
- return AGGR_EXCHANGE_DONE;
-
- if (txtid->cleanup_inprogress)
- return AGGR_CLEANUP_PROGRESS;
-
- if (txtid->addba_exchangeinprogress)
- return AGGR_EXCHANGE_PROGRESS;
-
- if (!txtid->addba_exchangecomplete) {
- if (!txtid->addba_exchangeinprogress &&
+ if (!(txtid->state & AGGR_ADDBA_COMPLETE)) {
+ if (!(txtid->state & AGGR_ADDBA_PROGRESS) &&
(txtid->addba_exchangeattempts < ADDBA_EXCHANGE_ATTEMPTS)) {
txtid->addba_exchangeattempts++;
- return AGGR_REQUIRED;
+ return true;
}
}
- return AGGR_NOT_REQUIRED;
+ return false;
}
/* Start TX aggregation */
-int ath_tx_aggr_start(struct ath_softc *sc,
- const u8 *addr,
- u16 tid,
- u16 *ssn)
+int ath_tx_aggr_start(struct ath_softc *sc, struct ieee80211_sta *sta,
+ u16 tid, u16 *ssn)
{
struct ath_atx_tid *txtid;
struct ath_node *an;
- spin_lock_bh(&sc->node_lock);
- an = ath_node_find(sc, (u8 *) addr);
- spin_unlock_bh(&sc->node_lock);
-
- if (!an) {
- DPRINTF(sc, ATH_DBG_AGGR,
- "%s: Node not found to initialize "
- "TX aggregation\n", __func__);
- return -1;
- }
+ an = (struct ath_node *)sta->drv_priv;
if (sc->sc_flags & SC_OP_TXAGGR) {
txtid = ATH_AN_2_TID(an, tid);
- txtid->addba_exchangeinprogress = 1;
+ txtid->state |= AGGR_ADDBA_PROGRESS;
ath_tx_pause_tid(sc, txtid);
}
/* Stop tx aggregation */
-int ath_tx_aggr_stop(struct ath_softc *sc,
- const u8 *addr,
- u16 tid)
+int ath_tx_aggr_stop(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid)
{
+ struct ath_node *an = (struct ath_node *)sta->drv_priv;
+
+ ath_tx_aggr_teardown(sc, an, tid);
+ return 0;
+}
+
+/* Resume tx aggregation */
+
+void ath_tx_aggr_resume(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid)
+{
+ struct ath_atx_tid *txtid;
struct ath_node *an;
- spin_lock_bh(&sc->node_lock);
- an = ath_node_find(sc, (u8 *) addr);
- spin_unlock_bh(&sc->node_lock);
+ an = (struct ath_node *)sta->drv_priv;
- if (!an) {
- DPRINTF(sc, ATH_DBG_AGGR,
- "%s: TX aggr stop for non-existent node\n", __func__);
- return -1;
+ if (sc->sc_flags & SC_OP_TXAGGR) {
+ txtid = ATH_AN_2_TID(an, tid);
+ txtid->baw_size =
+ IEEE80211_MIN_AMPDU_BUF << sta->ht_cap.ampdu_factor;
+ txtid->state |= AGGR_ADDBA_COMPLETE;
+ txtid->state &= ~AGGR_ADDBA_PROGRESS;
+ ath_tx_resume_tid(sc, txtid);
}
-
- ath_tx_aggr_teardown(sc, an, tid);
- return 0;
}
/*
* - Discard all retry frames from the s/w queue.
*/
-void ath_tx_aggr_teardown(struct ath_softc *sc,
- struct ath_node *an, u8 tid)
+void ath_tx_aggr_teardown(struct ath_softc *sc, struct ath_node *an, u8 tid)
{
struct ath_atx_tid *txtid = ATH_AN_2_TID(an, tid);
struct ath_txq *txq = &sc->sc_txq[txtid->ac->qnum];
DPRINTF(sc, ATH_DBG_AGGR, "%s: teardown TX aggregation\n", __func__);
- if (txtid->cleanup_inprogress) /* cleanup is in progress */
+ if (txtid->state & AGGR_CLEANUP) /* cleanup is in progress */
return;
- if (!txtid->addba_exchangecomplete) {
+ if (!(txtid->state & AGGR_ADDBA_COMPLETE)) {
txtid->addba_exchangeattempts = 0;
return;
}
if (txtid->baw_head != txtid->baw_tail) {
spin_unlock_bh(&txq->axq_lock);
- txtid->cleanup_inprogress = true;
+ txtid->state |= AGGR_CLEANUP;
} else {
- txtid->addba_exchangecomplete = 0;
+ txtid->state &= ~AGGR_ADDBA_COMPLETE;
txtid->addba_exchangeattempts = 0;
spin_unlock_bh(&txq->axq_lock);
ath_tx_flush_tid(sc, txtid);
if (tid->paused) /* check next tid to keep h/w busy */
continue;
- if (!(tid->an->an_smmode == ATH_SM_PWRSAV_DYNAMIC) ||
- ((txq->axq_depth % 2) == 0)) {
+ if ((txq->axq_depth % 2) == 0)
ath_tx_sched_aggr(sc, txq, tid);
- }
/*
* add tid to round-robin queue if more frames
void ath_tx_node_init(struct ath_softc *sc, struct ath_node *an)
{
- if (sc->sc_flags & SC_OP_TXAGGR) {
- struct ath_atx_tid *tid;
- struct ath_atx_ac *ac;
- int tidno, acno;
-
- an->maxampdu = ATH_AMPDU_LIMIT_DEFAULT;
+ struct ath_atx_tid *tid;
+ struct ath_atx_ac *ac;
+ int tidno, acno;
- /*
- * Init per tid tx state
- */
- for (tidno = 0, tid = &an->an_aggr.tx.tid[tidno];
- tidno < WME_NUM_TID;
- tidno++, tid++) {
- tid->an = an;
- tid->tidno = tidno;
- tid->seq_start = tid->seq_next = 0;
- tid->baw_size = WME_MAX_BA;
- tid->baw_head = tid->baw_tail = 0;
- tid->sched = false;
- tid->paused = false;
- tid->cleanup_inprogress = false;
- INIT_LIST_HEAD(&tid->buf_q);
-
- acno = TID_TO_WME_AC(tidno);
- tid->ac = &an->an_aggr.tx.ac[acno];
-
- /* ADDBA state */
- tid->addba_exchangecomplete = 0;
- tid->addba_exchangeinprogress = 0;
- tid->addba_exchangeattempts = 0;
- }
+ /*
+ * Init per tid tx state
+ */
+ for (tidno = 0, tid = &an->an_aggr.tx.tid[tidno];
+ tidno < WME_NUM_TID;
+ tidno++, tid++) {
+ tid->an = an;
+ tid->tidno = tidno;
+ tid->seq_start = tid->seq_next = 0;
+ tid->baw_size = WME_MAX_BA;
+ tid->baw_head = tid->baw_tail = 0;
+ tid->sched = false;
+ tid->paused = false;
+ tid->state &= ~AGGR_CLEANUP;
+ INIT_LIST_HEAD(&tid->buf_q);
+
+ acno = TID_TO_WME_AC(tidno);
+ tid->ac = &an->an_aggr.tx.ac[acno];
+
+ /* ADDBA state */
+ tid->state &= ~AGGR_ADDBA_COMPLETE;
+ tid->state &= ~AGGR_ADDBA_PROGRESS;
+ tid->addba_exchangeattempts = 0;
+ }
- /*
- * Init per ac tx state
- */
- for (acno = 0, ac = &an->an_aggr.tx.ac[acno];
- acno < WME_NUM_AC; acno++, ac++) {
- ac->sched = false;
- INIT_LIST_HEAD(&ac->tid_q);
-
- switch (acno) {
- case WME_AC_BE:
- ac->qnum = ath_tx_get_qnum(sc,
- ATH9K_TX_QUEUE_DATA, ATH9K_WME_AC_BE);
- break;
- case WME_AC_BK:
- ac->qnum = ath_tx_get_qnum(sc,
- ATH9K_TX_QUEUE_DATA, ATH9K_WME_AC_BK);
- break;
- case WME_AC_VI:
- ac->qnum = ath_tx_get_qnum(sc,
- ATH9K_TX_QUEUE_DATA, ATH9K_WME_AC_VI);
- break;
- case WME_AC_VO:
- ac->qnum = ath_tx_get_qnum(sc,
- ATH9K_TX_QUEUE_DATA, ATH9K_WME_AC_VO);
- break;
- }
+ /*
+ * Init per ac tx state
+ */
+ for (acno = 0, ac = &an->an_aggr.tx.ac[acno];
+ acno < WME_NUM_AC; acno++, ac++) {
+ ac->sched = false;
+ INIT_LIST_HEAD(&ac->tid_q);
+
+ switch (acno) {
+ case WME_AC_BE:
+ ac->qnum = ath_tx_get_qnum(sc,
+ ATH9K_TX_QUEUE_DATA, ATH9K_WME_AC_BE);
+ break;
+ case WME_AC_BK:
+ ac->qnum = ath_tx_get_qnum(sc,
+ ATH9K_TX_QUEUE_DATA, ATH9K_WME_AC_BK);
+ break;
+ case WME_AC_VI:
+ ac->qnum = ath_tx_get_qnum(sc,
+ ATH9K_TX_QUEUE_DATA, ATH9K_WME_AC_VI);
+ break;
+ case WME_AC_VO:
+ ac->qnum = ath_tx_get_qnum(sc,
+ ATH9K_TX_QUEUE_DATA, ATH9K_WME_AC_VO);
+ break;
}
}
}
/* Cleanupthe pending buffers for the node. */
-void ath_tx_node_cleanup(struct ath_softc *sc,
- struct ath_node *an, bool bh_flag)
+void ath_tx_node_cleanup(struct ath_softc *sc, struct ath_node *an)
{
int i;
struct ath_atx_ac *ac, *ac_tmp;
if (ATH_TXQ_SETUP(sc, i)) {
txq = &sc->sc_txq[i];
- if (likely(bh_flag))
- spin_lock_bh(&txq->axq_lock);
- else
- spin_lock(&txq->axq_lock);
+ spin_lock(&txq->axq_lock);
list_for_each_entry_safe(ac,
ac_tmp, &txq->axq_acq, list) {
tid_tmp, &ac->tid_q, list) {
list_del(&tid->list);
tid->sched = false;
- ath_tid_drain(sc, txq, tid, bh_flag);
- tid->addba_exchangecomplete = 0;
+ ath_tid_drain(sc, txq, tid);
+ tid->state &= ~AGGR_ADDBA_COMPLETE;
tid->addba_exchangeattempts = 0;
- tid->cleanup_inprogress = false;
+ tid->state &= ~AGGR_CLEANUP;
}
}
- if (likely(bh_flag))
- spin_unlock_bh(&txq->axq_lock);
- else
- spin_unlock(&txq->axq_lock);
- }
- }
-}
-
-/* Cleanup per node transmit state */
-
-void ath_tx_node_free(struct ath_softc *sc, struct ath_node *an)
-{
- if (sc->sc_flags & SC_OP_TXAGGR) {
- struct ath_atx_tid *tid;
- int tidno, i;
-
- /* Init per tid rx state */
- for (tidno = 0, tid = &an->an_aggr.tx.tid[tidno];
- tidno < WME_NUM_TID;
- tidno++, tid++) {
-
- for (i = 0; i < ATH_TID_MAX_BUFS; i++)
- ASSERT(tid->tx_buf[i] == NULL);
+ spin_unlock(&txq->axq_lock);
}
}
}
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ath_tx_control txctl;
+ memset(&txctl, 0, sizeof(struct ath_tx_control));
+
/*
* As a temporary workaround, assign seq# here; this will likely need
* to be cleaned up to work better with Beacon transmission and virtual
memmove(skb->data, skb->data + padsize, hdrlen);
}
+ txctl.txq = sc->sc_cabq;
+
DPRINTF(sc, ATH_DBG_XMIT, "%s: transmitting CABQ packet, skb: %p\n",
__func__,
skb);
- memset(&txctl, 0, sizeof(struct ath_tx_control));
- txctl.flags = ATH9K_TXDESC_CAB;
- if (ath_tx_prepare(sc, skb, &txctl) == 0) {
- /*
- * Start DMA mapping.
- * ath_tx_start_dma() will be called either synchronously
- * or asynchrounsly once DMA is complete.
- */
- xmit_map_sg(sc, skb, &txctl);
- } else {
- ath_node_put(sc, txctl.an, ATH9K_BH_STATUS_CHANGE);
- DPRINTF(sc, ATH_DBG_XMIT, "%s: TX CABQ failed\n", __func__);
- dev_kfree_skb_any(skb);
+ if (ath_tx_start(sc, skb, &txctl) != 0) {
+ DPRINTF(sc, ATH_DBG_XMIT, "%s: TX failed\n", __func__);
+ goto exit;
}
-}
+ return;
+exit:
+ dev_kfree_skb_any(skb);
+}
git.openpandora.org / pandora-kernel.git / blobdiff