diff options
Diffstat (limited to 'sys/dev/ic/ral.c')
| -rw-r--r-- | sys/dev/ic/ral.c | 37 |
1 files changed, 25 insertions, 12 deletions
diff --git a/sys/dev/ic/ral.c b/sys/dev/ic/ral.c index 13c0a28844c..b859e3ed469 100644 --- a/sys/dev/ic/ral.c +++ b/sys/dev/ic/ral.c @@ -1,4 +1,4 @@ -/* $OpenBSD: ral.c,v 1.56 2005/07/02 23:14:42 brad Exp $ */ +/* $OpenBSD: ral.c,v 1.57 2005/08/25 20:28:11 damien Exp $ */ /*- * Copyright (c) 2005 @@ -99,7 +99,7 @@ void ral_decryption_intr(struct ral_softc *); void ral_rx_intr(struct ral_softc *); void ral_beacon_expire(struct ral_softc *); void ral_wakeup_expire(struct ral_softc *); -int ral_ack_rate(int); +int ral_ack_rate(struct ieee80211com *, int); uint16_t ral_txtime(int, int, uint32_t); uint8_t ral_plcp_signal(int); void ral_setup_tx_desc(struct ral_softc *, struct ral_tx_desc *, @@ -910,6 +910,18 @@ ral_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) case IEEE80211_S_RUN: ral_set_chan(sc, ic->ic_bss->ni_chan); + /* update basic rate set */ + if (ic->ic_curmode == IEEE80211_MODE_11B) { + /* 11b basic rates: 1, 2Mbps */ + RAL_WRITE(sc, RAL_ARSP_PLCP_1, 0x3); + } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_bss->ni_chan)) { + /* 11a basic rates: 6, 12, 24Mbps */ + RAL_WRITE(sc, RAL_ARSP_PLCP_1, 0x150); + } else { + /* 11g basic rates: 1, 2, 5.5, 11, 6, 12, 24Mbps */ + RAL_WRITE(sc, RAL_ARSP_PLCP_1, 0x15f); + } + if (ic->ic_opmode != IEEE80211_M_MONITOR) { ral_set_bssid(sc, ic->ic_bss->ni_bssid); ral_update_slot(sc); @@ -1461,14 +1473,16 @@ ral_intr(void *arg) #define RAL_ACK_SIZE 14 /* 10 + 4(FCS) */ #define RAL_CTS_SIZE 14 /* 10 + 4(FCS) */ -#define RAL_SIFS 10 + +#define RAL_SIFS 10 /* us */ +#define RAL_RXTX_TURNAROUND 10 /* us */ /* * Return the expected ack rate for a frame transmitted at rate `rate'. * XXX: this should depend on the destination node basic rate set. */ int -ral_ack_rate(int rate) +ral_ack_rate(struct ieee80211com *ic, int rate) { switch (rate) { /* CCK rates */ @@ -1477,7 +1491,7 @@ ral_ack_rate(int rate) case 4: case 11: case 22: - return 4; + return (ic->ic_curmode == IEEE80211_MODE_11B) ? 4 : rate; /* OFDM rates */ case 12: @@ -1579,7 +1593,7 @@ ral_setup_tx_desc(struct ral_softc *sc, struct ral_tx_desc *desc, desc->flags |= htole32(RAL_TX_OFDM); desc->physaddr = htole32(physaddr); - desc->wme = htole16(RAL_LOGCWMAX(8) | RAL_LOGCWMIN(3) | RAL_AIFSN(2)); + desc->wme = htole16(RAL_AIFSN(3) | RAL_LOGCWMIN(4) | RAL_LOGCWMAX(6)); /* * Fill PLCP fields. @@ -1820,7 +1834,7 @@ ral_tx_data(struct ral_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) int rtsrate, ackrate; rtsrate = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? 12 : 4; - ackrate = ral_ack_rate(rate); + ackrate = ral_ack_rate(ic, rate); dur = ral_txtime(m0->m_pkthdr.len + 4, rate, ic->ic_flags) + ral_txtime(RAL_CTS_SIZE, rtsrate, ic->ic_flags) + @@ -1953,7 +1967,7 @@ ral_tx_data(struct ral_softc *sc, struct mbuf *m0, struct ieee80211_node *ni) if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { flags |= RAL_TX_ACK; - dur = ral_txtime(RAL_ACK_SIZE, ral_ack_rate(rate), + dur = ral_txtime(RAL_ACK_SIZE, ral_ack_rate(ic, rate), ic->ic_flags) + RAL_SIFS; *(uint16_t *)wh->i_dur = htole16(dur); } @@ -2396,11 +2410,10 @@ ral_update_slot(struct ral_softc *sc) slottime = (ic->ic_curmode == IEEE80211_MODE_11A) ? 9 : 20; /* define the MAC slot boundaries */ - sifs = RAL_SIFS; + sifs = RAL_SIFS - RAL_RXTX_TURNAROUND; pifs = sifs + slottime; difs = sifs + 2 * slottime; - eifs = sifs + ral_txtime(RAL_ACK_SIZE, - (ic->ic_curmode == IEEE80211_MODE_11A) ? 12 : 2, 0) + difs; + eifs = (ic->ic_curmode == IEEE80211_MODE_11B) ? 364 : 60; tmp = RAL_READ(sc, RAL_CSR11); tmp = (tmp & ~0x1f00) | slottime << 8; @@ -2653,7 +2666,7 @@ ral_init(struct ifnet *ifp) IEEE80211_ADDR_COPY(ic->ic_myaddr, LLADDR(ifp->if_sadl)); ral_set_macaddr(sc, ic->ic_myaddr); - /* set supported basic rates (1, 2, 6, 12, 24) */ + /* set basic rate set (will be updated later) */ RAL_WRITE(sc, RAL_ARSP_PLCP_1, 0x153); ral_set_txantenna(sc, 1); |