When AR_DurUpdateEna is set, the frame's duration field
is updated by the MAC based on the current rate.
Signed-off-by: Sujith Manoharan <[email protected]>
---
drivers/net/wireless/ath9k/core.h | 1 -
drivers/net/wireless/ath9k/xmit.c | 56 +++++++-----------------------------
2 files changed, 11 insertions(+), 46 deletions(-)
diff --git a/drivers/net/wireless/ath9k/core.h b/drivers/net/wireless/ath9k/core.h
index 0692fc3..b6b6868 100644
--- a/drivers/net/wireless/ath9k/core.h
+++ b/drivers/net/wireless/ath9k/core.h
@@ -516,7 +516,6 @@ struct ath_tx_control {
u32 keyix;
int min_rate;
int mcast_rate;
- u16 nextfraglen;
struct ath_softc *dev;
dma_addr_t dmacontext;
};
diff --git a/drivers/net/wireless/ath9k/xmit.c b/drivers/net/wireless/ath9k/xmit.c
index a18cea6..87aebf1 100644
--- a/drivers/net/wireless/ath9k/xmit.c
+++ b/drivers/net/wireless/ath9k/xmit.c
@@ -227,7 +227,6 @@ static int ath_tx_prepare(struct ath_softc *sc,
}
txctl->if_id = 0;
- txctl->nextfraglen = 0;
txctl->frmlen = skb->len + FCS_LEN - (hdrlen & 3);
txctl->txpower = MAX_RATE_POWER; /* FIXME */
@@ -344,51 +343,18 @@ static int ath_tx_prepare(struct ath_softc *sc,
}
rix = rcs[0].rix;
- /*
- * Calculate duration. This logically belongs in the 802.11
- * layer but it lacks sufficient information to calculate it.
- */
- if ((txctl->flags & ATH9K_TXDESC_NOACK) == 0 && !ieee80211_is_ctl(fc)) {
- u16 dur;
+ if (ieee80211_has_morefrags(fc) ||
+ (le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG)) {
/*
- * XXX not right with fragmentation.
- */
- if (sc->sc_flags & SC_OP_PREAMBLE_SHORT)
- dur = rt->info[rix].spAckDuration;
- else
- dur = rt->info[rix].lpAckDuration;
-
- if (le16_to_cpu(hdr->frame_control) &
- IEEE80211_FCTL_MOREFRAGS) {
- dur += dur; /* Add additional 'SIFS + ACK' */
-
- /*
- ** Compute size of next fragment in order to compute
- ** durations needed to update NAV.
- ** The last fragment uses the ACK duration only.
- ** Add time for next fragment.
- */
- dur += ath9k_hw_computetxtime(sc->sc_ah, rt,
- txctl->nextfraglen,
- rix,
- (sc->sc_flags & SC_OP_PREAMBLE_SHORT));
- }
-
- 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;
- }
-
- hdr->duration_id = cpu_to_le16(dur);
+ ** 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;
}
/*
--
1.6.0