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Only update the scheduler's byte count table for aggregation queues.

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The other queues, especially the command queue, uses the FIFO mode
which doesn't require the byte count table because queued entries are
processed in order.

Pointed out by:	Lucius Windschuh <lwindschuh at googlemail dot com>
This commit is contained in:
Bernhard Schmidt 2011-05-15 08:09:36 +00:00
parent 0148401a3f
commit 4f6760821e
1 changed files with 4 additions and 6 deletions
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6
sys/dev/iwn/if_iwn.c
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@ -3527,6 +3527,7 @@ iwn_tx_data(struct iwn_softc *sc, struct mbuf *m, struct ieee80211_node *ni)
BUS_DMASYNC_PREWRITE);
/* Update TX scheduler. */
if (ring->qid >= sc->firstaggqueue)
ops->update_sched(sc, ring->qid, ring->cur, tx->id, totlen);
/* Kick TX ring. */
@ -3730,6 +3731,7 @@ iwn_tx_data_raw(struct iwn_softc *sc, struct mbuf *m,
BUS_DMASYNC_PREWRITE);
/* Update TX scheduler. */
if (ring->qid >= sc->firstaggqueue)
ops->update_sched(sc, ring->qid, ring->cur, tx->id, totlen);
/* Kick TX ring. */
@ -3894,7 +3896,6 @@ iwn_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
static int
iwn_cmd(struct iwn_softc *sc, int code, const void *buf, int size, int async)
{
struct iwn_ops *ops = &sc->ops;
struct iwn_tx_ring *ring = &sc->txq[4];
struct iwn_tx_desc *desc;
struct iwn_tx_data *data;
@ -3954,9 +3955,6 @@ iwn_cmd(struct iwn_softc *sc, int code, const void *buf, int size, int async)
bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
BUS_DMASYNC_PREWRITE);
/* Update TX scheduler. */
ops->update_sched(sc, ring->qid, ring->cur, 0, 0);
/* Kick command ring. */
ring->cur = (ring->cur + 1) % IWN_TX_RING_COUNT;
IWN_WRITE(sc, IWN_HBUS_TARG_WRPTR, ring->qid << 8 | ring->cur);