ctsrate, ctsduration, series, 4, 0);
}
-/* Move everything from the vap's mcast queue to the hardware cab queue.
- * Caller must hold mcasq lock and cabq lock
- * XXX MORE_DATA bit?
- */
-static void empty_mcastq_into_cabq(struct ath_hal *ah,
- struct ath_txq *mcastq, struct ath_txq *cabq)
-{
- struct ath_buf *bfmcast;
-
- BUG_ON(list_empty(&mcastq->axq_q));
-
- bfmcast = list_first_entry(&mcastq->axq_q, struct ath_buf, list);
-
- /* link the descriptors */
- if (!cabq->axq_link)
- ath9k_hw_puttxbuf(ah, cabq->axq_qnum, bfmcast->bf_daddr);
- else
- *cabq->axq_link = bfmcast->bf_daddr;
-
- /* append the private vap mcast list to the cabq */
-
- cabq->axq_depth += mcastq->axq_depth;
- cabq->axq_totalqueued += mcastq->axq_totalqueued;
- cabq->axq_linkbuf = mcastq->axq_linkbuf;
- cabq->axq_link = mcastq->axq_link;
- list_splice_tail_init(&mcastq->axq_q, &cabq->axq_q);
- mcastq->axq_depth = 0;
- mcastq->axq_totalqueued = 0;
- mcastq->axq_linkbuf = NULL;
- mcastq->axq_link = NULL;
-}
-
-/* TODO: use ieee80211_get_buffered_bc() to fetch power saved mcast frames */
-/* This is only run at DTIM. We move everything from the vap's mcast queue
- * to the hardware cab queue. Caller must hold the mcastq lock. */
-static void trigger_mcastq(struct ath_hal *ah,
- struct ath_txq *mcastq, struct ath_txq *cabq)
-{
- spin_lock_bh(&cabq->axq_lock);
-
- if (!list_empty(&mcastq->axq_q))
- empty_mcastq_into_cabq(ah, mcastq, cabq);
-
- /* cabq is gated by beacon so it is safe to start here */
- if (!list_empty(&cabq->axq_q))
- ath9k_hw_txstart(ah, cabq->axq_qnum);
-
- spin_unlock_bh(&cabq->axq_lock);
-}
-
/*
* Generate beacon frame and queue cab data for a vap.
*
*/
static struct ath_buf *ath_beacon_generate(struct ath_softc *sc, int if_id)
{
- struct ath_hal *ah = sc->sc_ah;
struct ath_buf *bf;
struct ath_vap *avp;
struct sk_buff *skb;
int cabq_depth;
- int mcastq_depth;
- int is_beacon_dtim = 0;
struct ath_txq *cabq;
- struct ath_txq *mcastq;
struct ieee80211_tx_info *info;
avp = sc->sc_vaps[if_id];
- mcastq = &avp->av_mcastq;
cabq = sc->sc_cabq;
ASSERT(avp);
skb_end_pointer(skb) - skb->head,
PCI_DMA_TODEVICE);
- /* TODO: convert to use ieee80211_get_buffered_bc() */
- /* XXX: spin_lock_bh should not be used here, but sparse bitches
- * otherwise. We should fix sparse :) */
- spin_lock_bh(&mcastq->axq_lock);
- mcastq_depth = avp->av_mcastq.axq_depth;
+ skb = ieee80211_get_buffered_bc(sc->hw, avp->av_if_data);
/*
* if the CABQ traffic from previous DTIM is pending and the current
cabq_depth = cabq->axq_depth;
spin_unlock_bh(&cabq->axq_lock);
- if (avp->av_boff.bo_tim)
- is_beacon_dtim = avp->av_boff.bo_tim[4] & 1;
-
- if (mcastq_depth && is_beacon_dtim && cabq_depth) {
+ if (skb && cabq_depth) {
/*
* Unlock the cabq lock as ath_tx_draintxq acquires
* the lock again which is a common function and that
* Enable the CAB queue before the beacon queue to
* insure cab frames are triggered by this beacon.
*/
- if (is_beacon_dtim)
- trigger_mcastq(ah, mcastq, cabq);
+ while (skb) {
+ ath_tx_cabq(sc, skb);
+ skb = ieee80211_get_buffered_bc(sc->hw, avp->av_if_data);
+ }
- spin_unlock_bh(&mcastq->axq_lock);
return bf;
}
* NB: the beacon data buffer must be 32-bit aligned;
* we assume the wbuf routines will return us something
* with this alignment (perhaps should assert).
- * FIXME: Fill avp->av_boff.bo_tim,avp->av_btxctl.txpower and
+ * FIXME: Fill avp->av_btxctl.txpower and
* avp->av_btxctl.shortPreamble
*/
skb = ieee80211_beacon_get(sc->hw, avp->av_if_data);
#define IS_HT_RATE(_rate) ((_rate) & 0x80)
-/*
- * Insert a chain of ath_buf (descriptors) on a multicast txq
- * but do NOT start tx DMA on this queue.
- * NB: must be called with txq lock held
- */
-
-static void ath_tx_mcastqaddbuf(struct ath_softc *sc,
- struct ath_txq *txq,
- struct list_head *head)
-{
- struct ath_hal *ah = sc->sc_ah;
- struct ath_buf *bf;
-
- if (list_empty(head))
- return;
-
- /*
- * Insert the frame on the outbound list and
- * pass it on to the hardware.
- */
- bf = list_first_entry(head, struct ath_buf, list);
-
- /*
- * The CAB queue is started from the SWBA handler since
- * frames only go out on DTIM and to avoid possible races.
- */
- ath9k_hw_set_interrupts(ah, 0);
-
- /*
- * If there is anything in the mcastq, we want to set
- * the "more data" bit in the last item in the queue to
- * indicate that there is "more data". It makes sense to add
- * it here since you are *always* going to have
- * more data when adding to this queue, no matter where
- * you call from.
- */
-
- if (txq->axq_depth) {
- struct ath_buf *lbf;
- struct ieee80211_hdr *hdr;
-
- /*
- * Add the "more data flag" to the last frame
- */
-
- lbf = list_entry(txq->axq_q.prev, struct ath_buf, list);
- hdr = (struct ieee80211_hdr *)
- ((struct sk_buff *)(lbf->bf_mpdu))->data;
- hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_MOREDATA);
- }
-
- /*
- * Now, concat the frame onto the queue
- */
- list_splice_tail_init(head, &txq->axq_q);
- txq->axq_depth++;
- txq->axq_totalqueued++;
- txq->axq_linkbuf = list_entry(txq->axq_q.prev, struct ath_buf, list);
-
- DPRINTF(sc, ATH_DBG_QUEUE,
- "%s: txq depth = %d\n", __func__, txq->axq_depth);
- if (txq->axq_link != NULL) {
- *txq->axq_link = bf->bf_daddr;
- DPRINTF(sc, ATH_DBG_XMIT,
- "%s: link[%u](%p)=%llx (%p)\n",
- __func__,
- txq->axq_qnum, txq->axq_link,
- ito64(bf->bf_daddr), bf->bf_desc);
- }
- txq->axq_link = &(bf->bf_lastbf->bf_desc->ds_link);
- ath9k_hw_set_interrupts(ah, sc->sc_imask);
-}
-
/*
* Insert a chain of ath_buf (descriptors) on a txq and
* assume the descriptors are already chained together by caller.
__le16 fc;
u8 *qc;
- memset(txctl, 0, sizeof(struct ath_tx_control));
-
txctl->dev = sc;
hdr = (struct ieee80211_hdr *)skb->data;
hdrlen = ieee80211_get_hdrlen_from_skb(skb);
/* Fill qnum */
- txctl->qnum = ath_get_hal_qnum(skb_get_queue_mapping(skb), sc);
- txq = &sc->sc_txq[txctl->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)) {
+ 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__,
/* Fill flags */
- txctl->flags = ATH9K_TXDESC_CLRDMASK; /* needed for crypto errors */
+ txctl->flags |= ATH9K_TXDESC_CLRDMASK; /* needed for crypto errors */
if (tx_info->flags & IEEE80211_TX_CTL_NO_ACK)
txctl->flags |= ATH9K_TXDESC_NOACK;
struct list_head bf_head;
struct ath_desc *ds;
struct ath_hal *ah = sc->sc_ah;
- struct ath_txq *txq = &sc->sc_txq[txctl->qnum];
+ struct ath_txq *txq;
struct ath_tx_info_priv *tx_info_priv;
struct ath_rc_series *rcs;
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];
+
/* For each sglist entry, allocate an ath_buf for DMA */
INIT_LIST_HEAD(&bf_head);
spin_lock_bh(&sc->sc_txbuflock);
bf->bf_tidno = txctl->tidno;
}
- if (is_multicast_ether_addr(hdr->addr1)) {
- struct ath_vap *avp = sc->sc_vaps[txctl->if_id];
-
- /*
- * When servicing one or more stations in power-save
- * mode (or) if there is some mcast data waiting on
- * mcast queue (to prevent out of order delivery of
- * mcast,bcast packets) multicast frames must be
- * buffered until after the beacon. We use the private
- * mcast queue for that.
- */
- /* XXX? more bit in 802.11 frame header */
- spin_lock_bh(&avp->av_mcastq.axq_lock);
- if (txctl->ps || avp->av_mcastq.axq_depth)
- ath_tx_mcastqaddbuf(sc,
- &avp->av_mcastq, &bf_head);
- else
- ath_tx_txqaddbuf(sc, txq, &bf_head);
- spin_unlock_bh(&avp->av_mcastq.axq_lock);
- } else
- ath_tx_txqaddbuf(sc, txq, &bf_head);
+ ath_tx_txqaddbuf(sc, txq, &bf_head);
}
spin_unlock_bh(&txq->axq_lock);
return 0;
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)
/*
}
}
}
+
+void ath_tx_cabq(struct ath_softc *sc, struct sk_buff *skb)
+{
+ int hdrlen, padsize;
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ struct ath_tx_control txctl;
+
+ /*
+ * As a temporary workaround, assign seq# here; this will likely need
+ * to be cleaned up to work better with Beacon transmission and virtual
+ * BSSes.
+ */
+ if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
+ sc->seq_no += 0x10;
+ hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
+ hdr->seq_ctrl |= cpu_to_le16(sc->seq_no);
+ }
+
+ /* Add the padding after the header if this is not already done */
+ hdrlen = ieee80211_get_hdrlen_from_skb(skb);
+ if (hdrlen & 3) {
+ padsize = hdrlen % 4;
+ if (skb_headroom(skb) < padsize) {
+ DPRINTF(sc, ATH_DBG_XMIT, "%s: TX CABQ padding "
+ "failed\n", __func__);
+ dev_kfree_skb_any(skb);
+ return;
+ }
+ skb_push(skb, padsize);
+ memmove(skb->data, skb->data + padsize, hdrlen);
+ }
+
+ 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);
+ }
+}
+
projects / linux-2.6-omap-h63xx.git / commitdiff