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Add the logic for IBSS merges.

This commit is contained in:
dyoung 2005-01-04 01:00:30 +00:00
parent 5dc6377838
commit 9a756f795b
1 changed files with 30 additions and 11 deletions
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41
sys/dev/ic/rtw.c
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@ -1,4 +1,4 @@
/* $NetBSD: rtw.c,v 1.39 2005/01/03 03:25:06 dyoung Exp $ */
/* $NetBSD: rtw.c,v 1.40 2005/01/04 01:00:30 dyoung Exp $ */
/*-
* Copyright (c) 2004, 2005 David Young. All rights reserved.
*
@ -34,7 +34,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: rtw.c,v 1.39 2005/01/03 03:25:06 dyoung Exp $");
__KERNEL_RCSID(0, "$NetBSD: rtw.c,v 1.40 2005/01/04 01:00:30 dyoung Exp $");
#include "bpfilter.h"
@ -2975,11 +2975,29 @@ rtw_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg)
return (*sc->sc_mtbl.mt_newstate)(ic, nstate, arg);
}
static void
rtw_recv_beacon(struct rtw_softc *sc, struct mbuf *m,
struct ieee80211_node *ni, int subtype, int rssi, uint32_t rstamp)
/* Extend a 32-bit TSF timestamp to a 64-bit timestamp. */
static uint64_t
rtw_tsf_extend(struct rtw_regs *regs, uint32_t rstamp)
{
(*sc->sc_mtbl.mt_recv_mgmt)(&sc->sc_ic, m, ni, subtype, rssi, rstamp);
uint32_t tsftl, tsfth;
tsfth = RTW_READ(regs, RTW_TSFTRH);
tsftl = RTW_READ(regs, RTW_TSFTRL);
if (tsftl < rstamp) /* Compensate for rollover. */
tsfth--;
return ((uint64_t)tsfth << 32) | rstamp;
}
static void
rtw_ibss_merge(struct rtw_softc *sc, struct ieee80211_node *ni, uint32_t rstamp)
{
struct ieee80211com *ic = &sc->sc_ic;
if (le64toh(ni->ni_tsf) >= rtw_tsf_extend(&sc->sc_regs, rstamp) &&
ieee80211_ibss_merge(ic, ni) == ENETRESET) {
rtw_join_bss(sc, ic->ic_bss->ni_bssid, ic->ic_opmode,
ic->ic_bss->ni_intval);
}
return;
}
@ -2989,16 +3007,17 @@ rtw_recv_mgmt(struct ieee80211com *ic, struct mbuf *m,
{
struct rtw_softc *sc = (struct rtw_softc*)ic->ic_softc;
(*sc->sc_mtbl.mt_recv_mgmt)(ic, m, ni, subtype, rssi, rstamp);
switch (subtype) {
case IEEE80211_FC0_SUBTYPE_PROBE_REQ:
/* do nothing: hardware answers probe request XXX */
break;
case IEEE80211_FC0_SUBTYPE_PROBE_RESP:
case IEEE80211_FC0_SUBTYPE_BEACON:
rtw_recv_beacon(sc, m, ni, subtype, rssi, rstamp);
if (ic->ic_opmode != IEEE80211_M_IBSS ||
ic->ic_state != IEEE80211_S_RUN)
return;
rtw_ibss_merge(sc, ni, rstamp);
break;
default:
(*sc->sc_mtbl.mt_recv_mgmt)(ic, m, ni, subtype, rssi, rstamp);
break;
}
return;