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Differential D14628 Diff 40100 head/sys/dev/ral/rt2661.c

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head/sys/dev/ral/rt2661.c

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} }
static int static int
rt2661_sendprot(struct rt2661_softc *sc, int ac, rt2661_sendprot(struct rt2661_softc *sc, int ac,
const struct mbuf *m, struct ieee80211_node *ni, int prot, int rate) const struct mbuf *m, struct ieee80211_node *ni, int prot, int rate)
{ {
struct ieee80211com *ic = ni->ni_ic; struct ieee80211com *ic = ni->ni_ic;
struct rt2661_tx_ring *txq = &sc->txq[ac]; struct rt2661_tx_ring *txq = &sc->txq[ac];
const struct ieee80211_frame *wh;
struct rt2661_tx_desc *desc; struct rt2661_tx_desc *desc;
struct rt2661_tx_data *data; struct rt2661_tx_data *data;
struct mbuf *mprot; struct mbuf *mprot;
int protrate, ackrate, pktlen, flags, isshort, error; int protrate, flags, error;
uint16_t dur;
bus_dma_segment_t segs[RT2661_MAX_SCATTER]; bus_dma_segment_t segs[RT2661_MAX_SCATTER];
int nsegs; int nsegs;
KASSERT(prot == IEEE80211_PROT_RTSCTS || prot == IEEE80211_PROT_CTSONLY, mprot = ieee80211_alloc_prot(ni, m, rate, prot);
("protection %d", prot));
wh = mtod(m, const struct ieee80211_frame *);
pktlen = m->m_pkthdr.len + IEEE80211_CRC_LEN;
protrate = ieee80211_ctl_rate(ic->ic_rt, rate);
ackrate = ieee80211_ack_rate(ic->ic_rt, rate);
isshort = (ic->ic_flags & IEEE80211_F_SHPREAMBLE) != 0;
dur = ieee80211_compute_duration(ic->ic_rt, pktlen, rate, isshort)
+ ieee80211_ack_duration(ic->ic_rt, rate, isshort);
flags = RT2661_TX_MORE_FRAG;
if (prot == IEEE80211_PROT_RTSCTS) {
/* NB: CTS is the same size as an ACK */
dur += ieee80211_ack_duration(ic->ic_rt, rate, isshort);
flags |= RT2661_TX_NEED_ACK;
mprot = ieee80211_alloc_rts(ic, wh->i_addr1, wh->i_addr2, dur);
} else {
mprot = ieee80211_alloc_cts(ic, ni->ni_vap->iv_myaddr, dur);
}
if (mprot == NULL) { if (mprot == NULL) {
/* XXX stat + msg */ if_inc_counter(ni->ni_vap->iv_ifp, IFCOUNTER_OERRORS, 1);
device_printf(sc->sc_dev,
"could not allocate mbuf for protection mode %d\n", prot);
return ENOBUFS; return ENOBUFS;
} }
data = &txq->data[txq->cur]; data = &txq->data[txq->cur];
desc = &txq->desc[txq->cur]; desc = &txq->desc[txq->cur];
error = bus_dmamap_load_mbuf_sg(txq->data_dmat, data->map, mprot, segs, error = bus_dmamap_load_mbuf_sg(txq->data_dmat, data->map, mprot, segs,
&nsegs, 0); &nsegs, 0);
if (error != 0) { if (error != 0) {
device_printf(sc->sc_dev, device_printf(sc->sc_dev,
"could not map mbuf (error %d)\n", error); "could not map mbuf (error %d)\n", error);
m_freem(mprot); m_freem(mprot);
return error; return error;
} }
data->m = mprot; data->m = mprot;
data->ni = ieee80211_ref_node(ni); data->ni = ieee80211_ref_node(ni);
/* ctl frames are not taken into account for amrr */ /* ctl frames are not taken into account for amrr */
data->rix = IEEE80211_FIXED_RATE_NONE; data->rix = IEEE80211_FIXED_RATE_NONE;
protrate = ieee80211_ctl_rate(ic->ic_rt, rate);
flags = RT2661_TX_MORE_FRAG;
if (prot == IEEE80211_PROT_RTSCTS)
flags |= RT2661_TX_NEED_ACK;
rt2661_setup_tx_desc(sc, desc, flags, 0, mprot->m_pkthdr.len, rt2661_setup_tx_desc(sc, desc, flags, 0, mprot->m_pkthdr.len,
protrate, segs, 1, ac); protrate, segs, 1, ac);
bus_dmamap_sync(txq->data_dmat, data->map, BUS_DMASYNC_PREWRITE); bus_dmamap_sync(txq->data_dmat, data->map, BUS_DMASYNC_PREWRITE);
bus_dmamap_sync(txq->desc_dmat, txq->desc_map, BUS_DMASYNC_PREWRITE); bus_dmamap_sync(txq->desc_dmat, txq->desc_map, BUS_DMASYNC_PREWRITE);
txq->queued++; txq->queued++;
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