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NetBSD/sys/dev/ic/awi.c
onoe 793eb28211 Support WEP functions for awi driver. 
arc4 implementation by Kalle Kaukonen has been added.
	define "wlan" in files.
		XXX: only awi depends on wlan for now.
	Allow authentication for adhoc (IBSS) mode.
Disable adhoc mode without bssid (mediaopt adhoc,flag0) for FH radio.
	FH cannot work without synchronization by beacons.
Align IP header for ethernet encapsulation (IFF_FLAG0) mode.
Print available access points for IFF_DEBUG.
2000-07-04 14:27:56 +00:00

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/* $NetBSD: awi.c,v 1.20 2000/07/04 14:27:57 onoe Exp $ */
/*-
* Copyright (c) 1999 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Bill Sommerfeld
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Driver for AMD 802.11 firmware.
* Uses am79c930 chip driver to talk to firmware running on the am79c930.
*
* More-or-less a generic ethernet-like if driver, with 802.11 gorp added.
*/
/*
* todo:
* - flush tx queue on resynch.
* - clear oactive on "down".
* - rewrite copy-into-mbuf code
* - mgmt state machine gets stuck retransmitting assoc requests.
* - multicast filter.
* - fix device reset so it's more likely to work
* - show status goo through ifmedia.
*
* more todo:
* - deal with more 802.11 frames.
* - send reassoc request
* - deal with reassoc response
* - send/deal with disassociation
* - deal with "full" access points (no room for me).
* - power save mode
*
* later:
* - SSID preferences
* - need ioctls for poking at the MIBs
* - implement ad-hoc mode (including bss creation).
* - decide when to do "ad hoc" vs. infrastructure mode (IFF_LINK flags?)
* (focus on inf. mode since that will be needed for ietf)
* - deal with DH vs. FH versions of the card
* - deal with faster cards (2mb/s)
* - ?WEP goo (mmm, rc4) (it looks not particularly useful).
* - ifmedia revision.
* - common 802.11 mibish things.
* - common 802.11 media layer.
*/
/*
* Driver for AMD 802.11 PCnetMobile firmware.
* Uses am79c930 chip driver to talk to firmware running on the am79c930.
*
* The initial version of the driver was written by
* Bill Sommerfeld <sommerfeld@netbsd.org>.
* Then the driver module completely rewritten to support cards with DS phy
* and to support adhoc mode by Atsushi Onoe <onoe@netbsd.org>
*/
#include "opt_inet.h"
#if defined(__FreeBSD__) && __FreeBSD__ >= 4
#define NBPFILTER 1
#elif defined(__FreeBSD__) && __FreeBSD__ >= 3
#include "bpf.h"
#define NBPFILTER NBPF
#else
#include "bpfilter.h"
#endif
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/mbuf.h>
#include <sys/malloc.h>
#include <sys/proc.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <sys/errno.h>
#include <sys/syslog.h>
#if defined(__FreeBSD__) && __FreeBSD__ >= 4
#include <sys/bus.h>
#else
#include <sys/device.h>
#endif
#include <net/if.h>
#include <net/if_dl.h>
#ifdef __FreeBSD__
#include <net/ethernet.h>
#else
#include <net/if_ether.h>
#endif
#include <net/if_media.h>
#include <net/if_llc.h>
#include <net/if_ieee80211.h>
#ifdef INET
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/in_var.h>
#include <netinet/ip.h>
#ifdef __NetBSD__
#include <netinet/if_inarp.h>
#else
#include <netinet/if_ether.h>
#endif
#endif
#if NBPFILTER > 0
#include <net/bpf.h>
#include <net/bpfdesc.h>
#endif
#include <machine/cpu.h>
#include <machine/bus.h>
#ifdef __NetBSD__
#include <machine/intr.h>
#endif
#ifdef __FreeBSD__
#include <machine/clock.h>
#endif
#ifdef __NetBSD__
#include <dev/ic/am79c930reg.h>
#include <dev/ic/am79c930var.h>
#include <dev/ic/awireg.h>
#include <dev/ic/awivar.h>
#endif
#ifdef __FreeBSD__
#include <dev/awi/am79c930reg.h>
#include <dev/awi/am79c930var.h>
#include <dev/awi/awireg.h>
#include <dev/awi/awivar.h>
#endif
static int awi_ioctl __P((struct ifnet *ifp, u_long cmd, caddr_t data));
#ifdef IFM_IEEE80211
static int awi_media_rate2opt __P((struct awi_softc *sc, int rate));
static int awi_media_opt2rate __P((struct awi_softc *sc, int opt));
static int awi_media_change __P((struct ifnet *ifp));
static void awi_media_status __P((struct ifnet *ifp, struct ifmediareq *imr));
#endif
static void awi_watchdog __P((struct ifnet *ifp));
static void awi_start __P((struct ifnet *ifp));
static void awi_txint __P((struct awi_softc *sc));
static struct mbuf * awi_fix_txhdr __P((struct awi_softc *sc, struct mbuf *m0));
static struct mbuf * awi_fix_rxhdr __P((struct awi_softc *sc, struct mbuf *m0));
static void awi_input __P((struct awi_softc *sc, struct mbuf *m, u_int32_t rxts, u_int8_t rssi));
static void awi_rxint __P((struct awi_softc *sc));
static struct mbuf * awi_devget __P((struct awi_softc *sc, u_int32_t off, u_int16_t len));
static int awi_init_hw __P((struct awi_softc *sc));
static int awi_init_mibs __P((struct awi_softc *sc));
static int awi_init_txrx __P((struct awi_softc *sc));
static void awi_stop_txrx __P((struct awi_softc *sc));
static int awi_start_scan __P((struct awi_softc *sc));
static int awi_next_scan __P((struct awi_softc *sc));
static void awi_stop_scan __P((struct awi_softc *sc));
static void awi_recv_beacon __P((struct awi_softc *sc, struct mbuf *m0, u_int32_t rxts, u_int8_t rssi));
static int awi_set_ss __P((struct awi_softc *sc));
static void awi_try_sync __P((struct awi_softc *sc));
static void awi_sync_done __P((struct awi_softc *sc));
static void awi_send_deauth __P((struct awi_softc *sc));
static void awi_send_auth __P((struct awi_softc *sc, int seq));
static void awi_recv_auth __P((struct awi_softc *sc, struct mbuf *m0));
static void awi_send_asreq __P((struct awi_softc *sc, int reassoc));
static void awi_recv_asresp __P((struct awi_softc *sc, struct mbuf *m0));
static int awi_mib __P((struct awi_softc *sc, u_int8_t cmd, u_int8_t mib));
static int awi_cmd_scan __P((struct awi_softc *sc));
static int awi_cmd __P((struct awi_softc *sc, u_int8_t cmd));
static void awi_cmd_done __P((struct awi_softc *sc));
static int awi_next_txd __P((struct awi_softc *sc, int len, u_int32_t *framep, u_int32_t*ntxdp));
static int awi_lock __P((struct awi_softc *sc));
static void awi_unlock __P((struct awi_softc *sc));
static int awi_intr_lock __P((struct awi_softc *sc));
static void awi_intr_unlock __P((struct awi_softc *sc));
static int awi_cmd_wait __P((struct awi_softc *sc));
static void awi_print_essid __P((u_int8_t *essid));
#ifdef AWI_DEBUG
static void awi_dump_pkt __P((struct awi_softc *sc, struct mbuf *m, int rssi));
int awi_verbose = 0;
int awi_dump = 0;
#define AWI_DUMP_MASK(fc0) (1 << (((fc0) & IEEE80211_FC0_SUBTYPE_MASK) >> 4))
int awi_dump_mask = AWI_DUMP_MASK(IEEE80211_FC0_SUBTYPE_BEACON);
int awi_dump_hdr = 0;
int awi_dump_len = 28;
#endif
#if NBPFILTER > 0
#define AWI_BPF_NORM 0
#define AWI_BPF_RAW 1
#ifdef __FreeBSD__
#define AWI_BPF_MTAP(sc, m, raw) do { \
if ((sc)->sc_ifp->if_bpf && (sc)->sc_rawbpf == (raw)) \
bpf_mtap((sc)->sc_ifp, (m)); \
} while (0);
#else
#define AWI_BPF_MTAP(sc, m, raw) do { \
if ((sc)->sc_ifp->if_bpf && (sc)->sc_rawbpf == (raw)) \
bpf_mtap((sc)->sc_ifp->if_bpf, (m)); \
} while (0);
#endif
#else
#define AWI_BPF_MTAP(sc, m, raw)
#endif
#ifndef llc_snap
#define llc_snap llc_un.type_snap
#endif
#ifdef __FreeBSD__
#if __FreeBSD__ >= 4
devclass_t awi_devclass;
#endif
/* NetBSD compatible functions */
static char * ether_sprintf __P((u_int8_t *));
static char *
ether_sprintf(enaddr)
u_int8_t *enaddr;
{
static char strbuf[18];
sprintf(strbuf, "%6D", enaddr, ":");
return strbuf;
}
#endif
int
awi_attach(sc)
struct awi_softc *sc;
{
struct ifnet *ifp = sc->sc_ifp;
int s;
int error;
#ifdef IFM_IEEE80211
int i;
u_int8_t *phy_rates;
int mword;
struct ifmediareq imr;
#endif
s = splnet();
/*
* Even if we can sleep in initialization state,
* all other processes (e.g. ifconfig) have to wait for
* completion of attaching interface.
*/
sc->sc_busy = 1;
sc->sc_status = AWI_ST_INIT;
TAILQ_INIT(&sc->sc_scan);
error = awi_init_hw(sc);
if (error) {
sc->sc_invalid = 1;
splx(s);
return error;
}
error = awi_init_mibs(sc);
splx(s);
if (error) {
sc->sc_invalid = 1;
return error;
}
ifp->if_softc = sc;
ifp->if_start = awi_start;
ifp->if_ioctl = awi_ioctl;
ifp->if_watchdog = awi_watchdog;
ifp->if_mtu = ETHERMTU;
ifp->if_hdrlen = sizeof(struct ieee80211_frame) +
sizeof(struct ether_header);
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
#ifdef IFF_NOTRAILERS
ifp->if_flags |= IFF_NOTRAILERS;
#endif
#ifdef __NetBSD__
memcpy(ifp->if_xname, sc->sc_dev.dv_xname, IFNAMSIZ);
#endif
#ifdef __FreeBSD__
ifp->if_output = ether_output;
ifp->if_snd.ifq_maxlen = ifqmaxlen;
memcpy(sc->sc_ec.ac_enaddr, sc->sc_mib_addr.aMAC_Address,
ETHER_ADDR_LEN);
#endif
printf("%s: IEEE802.11 %s %dMbps (firmware %s)\n",
sc->sc_dev.dv_xname,
sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH ? "FH" : "DS",
sc->sc_tx_rate / 10, sc->sc_banner);
printf("%s: address %s\n",
sc->sc_dev.dv_xname, ether_sprintf(sc->sc_mib_addr.aMAC_Address));
if_attach(ifp);
#ifdef __FreeBSD__
ether_ifattach(ifp);
#if NBPFILTER > 0
bpfattach(ifp, DLT_EN10MB, sizeof(struct ether_header));
#endif
#else
ether_ifattach(ifp, sc->sc_mib_addr.aMAC_Address);
#if NBPFILTER > 0
bpfattach(&ifp->if_bpf, ifp, DLT_EN10MB, sizeof(struct ether_header));
#endif
#endif
#ifdef IFM_IEEE80211
ifmedia_init(&sc->sc_media, 0, awi_media_change, awi_media_status);
phy_rates = sc->sc_mib_phy.aSuprt_Data_Rates;
for (i = 0; i < phy_rates[1]; i++) {
mword = awi_media_rate2opt(sc, AWI_80211_RATE(phy_rates[2 + i]));
if (mword == 0)
continue;
mword |= IFM_IEEE80211;
ifmedia_add(&sc->sc_media, mword, 0, NULL);
ifmedia_add(&sc->sc_media,
mword | IFM_IEEE80211_ADHOC, 0, NULL);
if (sc->sc_mib_phy.IEEE_PHY_Type != AWI_PHY_TYPE_FH)
ifmedia_add(&sc->sc_media,
mword | IFM_IEEE80211_ADHOC | IFM_FLAG0, 0, NULL);
}
awi_media_status(ifp, &imr);
ifmedia_set(&sc->sc_media, imr.ifm_active);
#endif
/* ready to accept ioctl */
awi_unlock(sc);
/* Attach is successful. */
sc->sc_attached = 1;
return 0;
}
#ifdef __NetBSD__
int
awi_detach(sc)
struct awi_softc *sc;
{
struct ifnet *ifp = sc->sc_ifp;
int s;
/* Succeed if there is no work to do. */
if (!sc->sc_attached)
return (0);
s = splnet();
sc->sc_invalid = 1;
awi_stop(sc);
while (sc->sc_sleep_cnt > 0) {
wakeup(sc);
(void)tsleep(sc, PWAIT, "awidet", 1);
}
if (sc->sc_wep_ctx != NULL)
free(sc->sc_wep_ctx, M_DEVBUF);
#if NBPFILTER > 0
bpfdetach(ifp);
#endif
#ifdef IFM_IEEE80211
ifmedia_delete_instance(&sc->sc_media, IFM_INST_ANY);
#endif
ether_ifdetach(ifp);
if_detach(ifp);
if (sc->sc_enabled) {
if (sc->sc_disable)
(*sc->sc_disable)(sc);
sc->sc_enabled = 0;
}
splx(s);
return 0;
}
int
awi_activate(self, act)
struct device *self;
enum devact act;
{
struct awi_softc *sc = (struct awi_softc *)self;
int s, error = 0;
s = splnet();
switch (act) {
case DVACT_ACTIVATE:
error = EOPNOTSUPP;
break;
case DVACT_DEACTIVATE:
sc->sc_invalid = 1;
if (sc->sc_ifp)
if_deactivate(sc->sc_ifp);
break;
}
splx(s);
return error;
}
void
awi_power(sc, why)
struct awi_softc *sc;
int why;
{
int s;
int ocansleep;
if (!sc->sc_enabled)
return;
s = splnet();
ocansleep = sc->sc_cansleep;
sc->sc_cansleep = 0;
#ifdef needtobefixed /*ONOE*/
if (why == PWR_RESUME) {
sc->sc_enabled = 0;
awi_init(sc);
(void)awi_intr(sc);
} else {
awi_stop(sc);
if (sc->sc_disable)
(*sc->sc_disable)(sc);
}
#endif
sc->sc_cansleep = ocansleep;
splx(s);
}
#endif /* __NetBSD__ */
static int
awi_ioctl(ifp, cmd, data)
struct ifnet *ifp;
u_long cmd;
caddr_t data;
{
struct awi_softc *sc = ifp->if_softc;
struct ifreq *ifr = (struct ifreq *)data;
struct ifaddr *ifa = (struct ifaddr *)data;
int s, error;
size_t nwidlen;
u_int8_t nwid[IEEE80211_NWID_LEN + 1];
u_int8_t *p;
s = splnet();
/* serialize ioctl */
error = awi_lock(sc);
if (error)
goto cantlock;
switch (cmd) {
case SIOCSIFADDR:
ifp->if_flags |= IFF_UP;
switch (ifa->ifa_addr->sa_family) {
#ifdef INET
case AF_INET:
arp_ifinit((void *)ifp, ifa);
break;
#endif
}
/* FALLTHROUGH */
case SIOCSIFFLAGS:
sc->sc_format_llc = !(ifp->if_flags & IFF_LINK0);
if (!(ifp->if_flags & IFF_UP)) {
if (sc->sc_enabled) {
awi_stop(sc);
if (sc->sc_disable)
(*sc->sc_disable)(sc);
sc->sc_enabled = 0;
}
break;
}
error = awi_init(sc);
break;
case SIOCADDMULTI:
case SIOCDELMULTI:
#ifdef __FreeBSD__
error = ENETRESET; /*XXX*/
#else
error = (cmd == SIOCADDMULTI) ?
ether_addmulti(ifr, &sc->sc_ec) :
ether_delmulti(ifr, &sc->sc_ec);
#endif
/*
* Do not rescan BSS. Rather, just reset multicast filter.
*/
if (error == ENETRESET) {
if (sc->sc_enabled)
error = awi_init(sc);
else
error = 0;
}
break;
case SIOCSIFMTU:
if (ifr->ifr_mtu > ETHERMTU)
error = EINVAL;
else
ifp->if_mtu = ifr->ifr_mtu;
break;
case SIOCS80211NWID:
error = copyinstr(ifr->ifr_data, nwid, sizeof(nwid), &nwidlen);
if (error)
break;
nwidlen--; /* eliminate trailing '\0' */
if (nwidlen > IEEE80211_NWID_LEN) {
error = EINVAL;
break;
}
if (sc->sc_mib_mac.aDesired_ESS_ID[1] == nwidlen &&
memcmp(&sc->sc_mib_mac.aDesired_ESS_ID[2], nwid,
nwidlen) == 0)
break;
memset(sc->sc_mib_mac.aDesired_ESS_ID, 0, AWI_ESS_ID_SIZE);
sc->sc_mib_mac.aDesired_ESS_ID[0] = IEEE80211_ELEMID_SSID;
sc->sc_mib_mac.aDesired_ESS_ID[1] = nwidlen;
memcpy(&sc->sc_mib_mac.aDesired_ESS_ID[2], nwid, nwidlen);
if (sc->sc_enabled) {
awi_stop(sc);
error = awi_init(sc);
}
break;
case SIOCG80211NWID:
if (ifp->if_flags & IFF_RUNNING)
p = sc->sc_bss.essid;
else
p = sc->sc_mib_mac.aDesired_ESS_ID;
error = copyout(p + 2, ifr->ifr_data, IEEE80211_NWID_LEN);
break;
#ifdef IFM_IEEE80211
case SIOCSIFMEDIA:
case SIOCGIFMEDIA:
error = ifmedia_ioctl(ifp, ifr, &sc->sc_media, cmd);
break;
#endif
default:
error = awi_wicfg(ifp, cmd, data);
break;
}
awi_unlock(sc);
cantlock:
splx(s);
return error;
}
#ifdef IFM_IEEE80211
static int
awi_media_rate2opt(sc, rate)
struct awi_softc *sc;
int rate;
{
int mword;
mword = 0;
switch (rate) {
case 10:
if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH)
mword = IFM_IEEE80211_FH1;
else
mword = IFM_IEEE80211_DS1;
break;
case 20:
if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH)
mword = IFM_IEEE80211_FH2;
else
mword = IFM_IEEE80211_DS2;
break;
case 55:
if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_DS)
mword = IFM_IEEE80211_DS5;
break;
case 110:
if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_DS)
mword = IFM_IEEE80211_DS11;
break;
}
return mword;
}
static int
awi_media_opt2rate(sc, opt)
struct awi_softc *sc;
int opt;
{
int rate;
rate = 0;
switch (IFM_SUBTYPE(opt)) {
case IFM_IEEE80211_FH1:
case IFM_IEEE80211_FH2:
if (sc->sc_mib_phy.IEEE_PHY_Type != AWI_PHY_TYPE_FH)
return 0;
break;
case IFM_IEEE80211_DS1:
case IFM_IEEE80211_DS2:
case IFM_IEEE80211_DS5:
case IFM_IEEE80211_DS11:
if (sc->sc_mib_phy.IEEE_PHY_Type != AWI_PHY_TYPE_DS)
return 0;
break;
}
switch (IFM_SUBTYPE(opt)) {
case IFM_IEEE80211_FH1:
case IFM_IEEE80211_DS1:
rate = 10;
break;
case IFM_IEEE80211_FH2:
case IFM_IEEE80211_DS2:
rate = 20;
break;
case IFM_IEEE80211_DS5:
rate = 55;
break;
case IFM_IEEE80211_DS11:
rate = 110;
break;
}
return rate;
}
/*
* Called from ifmedia_ioctl via awi_ioctl with lock obtained.
*/
static int
awi_media_change(ifp)
struct ifnet *ifp;
{
struct awi_softc *sc = ifp->if_softc;
struct ifmedia_entry *ime;
u_int8_t *phy_rates;
int i, rate, error;
error = 0;
ime = sc->sc_media.ifm_cur;
rate = awi_media_opt2rate(sc, ime->ifm_media);
if (rate == 0)
return EINVAL;
if (rate != sc->sc_tx_rate) {
phy_rates = sc->sc_mib_phy.aSuprt_Data_Rates;
for (i = 0; i < phy_rates[1]; i++) {
if (rate == AWI_80211_RATE(phy_rates[2 + i]))
break;
}
if (i == phy_rates[1])
return EINVAL;
}
if (ime->ifm_media & IFM_IEEE80211_ADHOC) {
sc->sc_mib_local.Network_Mode = 0;
if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH)
sc->sc_no_bssid = 0;
else
sc->sc_no_bssid = (ime->ifm_media & IFM_FLAG0) ? 1 : 0;
} else {
sc->sc_mib_local.Network_Mode = 1;
}
if (sc->sc_enabled) {
awi_stop(sc);
error = awi_init(sc);
}
return error;
}
static void
awi_media_status(ifp, imr)
struct ifnet *ifp;
struct ifmediareq *imr;
{
struct awi_softc *sc = ifp->if_softc;
imr->ifm_status = IFM_AVALID;
if (ifp->if_flags & IFF_RUNNING)
imr->ifm_status |= IFM_ACTIVE;
imr->ifm_active = IFM_IEEE80211;
imr->ifm_active |= awi_media_rate2opt(sc, sc->sc_tx_rate);
if (sc->sc_mib_local.Network_Mode == 0) {
imr->ifm_active |= IFM_IEEE80211_ADHOC;
if (sc->sc_no_bssid)
imr->ifm_active |= IFM_FLAG0;
}
}
#endif /* IFM_IEEE80211 */
int
awi_intr(arg)
void *arg;
{
struct awi_softc *sc = arg;
u_int16_t status;
int error, handled = 0, ocansleep;
if (!sc->sc_enabled || !sc->sc_enab_intr || sc->sc_invalid)
return 0;
am79c930_gcr_setbits(&sc->sc_chip,
AM79C930_GCR_DISPWDN | AM79C930_GCR_ECINT);
awi_write_1(sc, AWI_DIS_PWRDN, 1);
ocansleep = sc->sc_cansleep;
sc->sc_cansleep = 0;
for (;;) {
error = awi_intr_lock(sc);
if (error)
break;
status = awi_read_1(sc, AWI_INTSTAT);
awi_write_1(sc, AWI_INTSTAT, 0);
awi_write_1(sc, AWI_INTSTAT, 0);
status |= awi_read_1(sc, AWI_INTSTAT2) << 8;
awi_write_1(sc, AWI_INTSTAT2, 0);
DELAY(10);
awi_intr_unlock(sc);
if (!sc->sc_cmd_inprog)
status &= ~AWI_INT_CMD; /* make sure */
if (status == 0)
break;
handled = 1;
if (status & AWI_INT_RX)
awi_rxint(sc);
if (status & AWI_INT_TX)
awi_txint(sc);
if (status & AWI_INT_CMD)
awi_cmd_done(sc);
if (status & AWI_INT_SCAN_CMPLT) {
if (sc->sc_status == AWI_ST_SCAN &&
sc->sc_mgt_timer > 0)
(void)awi_next_scan(sc);
}
}
sc->sc_cansleep = ocansleep;
am79c930_gcr_clearbits(&sc->sc_chip, AM79C930_GCR_DISPWDN);
awi_write_1(sc, AWI_DIS_PWRDN, 0);
return handled;
}
int
awi_init(sc)
struct awi_softc *sc;
{
int error, ostatus;
int n;
struct ifnet *ifp = sc->sc_ifp;
#ifdef __FreeBSD__
struct ifmultiaddr *ifma;
#else
struct ether_multi *enm;
struct ether_multistep step;
#endif
/* reinitialize muticast filter */
n = 0;
ifp->if_flags |= IFF_ALLMULTI;
sc->sc_mib_local.Accept_All_Multicast_Dis = 0;
if (ifp->if_flags & IFF_PROMISC) {
sc->sc_mib_mac.aPromiscuous_Enable = 1;
goto set_mib;
}
sc->sc_mib_mac.aPromiscuous_Enable = 0;
#ifdef __FreeBSD__
if (ifp->if_amcount != 0)
goto set_mib;
for (ifma = LIST_FIRST(&ifp->if_multiaddrs); ifma != NULL;
ifma = LIST_NEXT(ifma, ifma_link)) {
if (ifma->ifma_addr->sa_family != AF_LINK)
continue;
if (n == AWI_GROUP_ADDR_SIZE)
goto set_mib;
memcpy(sc->sc_mib_addr.aGroup_Addresses[n],
LLADDR((struct sockaddr_dl *)ifma->ifma_addr),
ETHER_ADDR_LEN);
n++;
}
#else
ETHER_FIRST_MULTI(step, &sc->sc_ec, enm);
while (enm != NULL) {
if (n == AWI_GROUP_ADDR_SIZE ||
memcmp(enm->enm_addrlo, enm->enm_addrhi, ETHER_ADDR_LEN)
!= 0)
goto set_mib;
memcpy(sc->sc_mib_addr.aGroup_Addresses[n], enm->enm_addrlo,
ETHER_ADDR_LEN);
n++;
ETHER_NEXT_MULTI(step, enm);
}
#endif
for (; n < AWI_GROUP_ADDR_SIZE; n++)
memset(sc->sc_mib_addr.aGroup_Addresses[n], 0, ETHER_ADDR_LEN);
ifp->if_flags &= ~IFF_ALLMULTI;
sc->sc_mib_local.Accept_All_Multicast_Dis = 1;
set_mib:
#ifdef notdef /* allow non-encrypted frame for receiving. */
sc->sc_mib_mgt.Wep_Required = sc->sc_wep_algo != NULL ? 1 : 0;
#endif
if (!sc->sc_enabled) {
sc->sc_enabled = 1;
if (sc->sc_enable)
(*sc->sc_enable)(sc);
sc->sc_status = AWI_ST_INIT;
error = awi_init_hw(sc);
if (error)
return error;
}
ostatus = sc->sc_status;
sc->sc_status = AWI_ST_INIT;
if ((error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_LOCAL)) != 0 ||
(error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_ADDR)) != 0 ||
(error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MAC)) != 0 ||
(error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MGT)) != 0 ||
(error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_PHY)) != 0) {
awi_stop(sc);
return error;
}
if (ifp->if_flags & IFF_RUNNING)
sc->sc_status = AWI_ST_RUNNING;
else {
if (ostatus == AWI_ST_INIT) {
error = awi_init_txrx(sc);
if (error)
return error;
}
error = awi_start_scan(sc);
}
return error;
}
void
awi_stop(sc)
struct awi_softc *sc;
{
struct ifnet *ifp = sc->sc_ifp;
struct awi_bss *bp;
struct mbuf *m;
sc->sc_status = AWI_ST_INIT;
if (!sc->sc_invalid) {
(void)awi_cmd_wait(sc);
if (sc->sc_mib_local.Network_Mode &&
sc->sc_status > AWI_ST_AUTH)
awi_send_deauth(sc);
awi_stop_txrx(sc);
}
ifp->if_flags &= ~(IFF_RUNNING|IFF_OACTIVE);
ifp->if_timer = 0;
sc->sc_tx_timer = sc->sc_rx_timer = sc->sc_mgt_timer = 0;
for (;;) {
IF_DEQUEUE(&sc->sc_mgtq, m);
if (m == NULL)
break;
m_freem(m);
}
for (;;) {
IF_DEQUEUE(&ifp->if_snd, m);
if (m == NULL)
break;
m_freem(m);
}
while ((bp = TAILQ_FIRST(&sc->sc_scan)) != NULL) {
TAILQ_REMOVE(&sc->sc_scan, bp, list);
free(bp, M_DEVBUF);
}
}
static void
awi_watchdog(ifp)
struct ifnet *ifp;
{
struct awi_softc *sc = ifp->if_softc;
int ocansleep;
if (sc->sc_invalid) {
ifp->if_timer = 0;
return;
}
ocansleep = sc->sc_cansleep;
sc->sc_cansleep = 0;
if (sc->sc_tx_timer && --sc->sc_tx_timer == 0) {
printf("%s: transmit timeout\n", sc->sc_dev.dv_xname);
awi_txint(sc);
}
if (sc->sc_rx_timer && --sc->sc_rx_timer == 0) {
printf("%s: no recent beacons from %s; rescanning\n",
sc->sc_dev.dv_xname, ether_sprintf(sc->sc_bss.bssid));
ifp->if_flags &= ~IFF_RUNNING;
awi_start_scan(sc);
}
if (sc->sc_mgt_timer && --sc->sc_mgt_timer == 0) {
switch (sc->sc_status) {
case AWI_ST_SCAN:
awi_stop_scan(sc);
break;
case AWI_ST_AUTH:
case AWI_ST_ASSOC:
/* restart scan */
awi_start_scan(sc);
break;
default:
break;
}
}
if (sc->sc_tx_timer == 0 && sc->sc_rx_timer == 0 &&
sc->sc_mgt_timer == 0)
ifp->if_timer = 0;
else
ifp->if_timer = 1;
sc->sc_cansleep = ocansleep;
}
static void
awi_start(ifp)
struct ifnet *ifp;
{
struct awi_softc *sc = ifp->if_softc;
struct mbuf *m0, *m;
u_int32_t txd, frame, ntxd;
u_int8_t rate;
int len, sent = 0;
for (;;) {
txd = sc->sc_txnext;
IF_DEQUEUE(&sc->sc_mgtq, m0);
if (m0 != NULL) {
if (awi_next_txd(sc, m0->m_pkthdr.len, &frame, &ntxd)) {
IF_PREPEND(&sc->sc_mgtq, m0);
ifp->if_flags |= IFF_OACTIVE;
break;
}
} else {
if (!(ifp->if_flags & IFF_RUNNING))
break;
IF_DEQUEUE(&ifp->if_snd, m0);
if (m0 == NULL)
break;
len = m0->m_pkthdr.len + sizeof(struct ieee80211_frame);
if (sc->sc_format_llc)
len += sizeof(struct llc) -
sizeof(struct ether_header);
if (sc->sc_wep_algo != NULL)
len += IEEE80211_WEP_IVLEN +
IEEE80211_WEP_KIDLEN + IEEE80211_WEP_CRCLEN;
if (awi_next_txd(sc, len, &frame, &ntxd)) {
IF_PREPEND(&ifp->if_snd, m0);
ifp->if_flags |= IFF_OACTIVE;
break;
}
AWI_BPF_MTAP(sc, m0, AWI_BPF_NORM);
m0 = awi_fix_txhdr(sc, m0);
if (sc->sc_wep_algo != NULL && m0 != NULL)
m0 = awi_wep_encrypt(sc, m0, 1);
if (m0 == NULL) {
ifp->if_oerrors++;
continue;
}
ifp->if_opackets++;
}
#ifdef AWI_DEBUG
if (awi_dump)
awi_dump_pkt(sc, m0, -1);
#endif
AWI_BPF_MTAP(sc, m0, AWI_BPF_RAW);
len = 0;
for (m = m0; m != NULL; m = m->m_next) {
awi_write_bytes(sc, frame + len, mtod(m, u_int8_t *),
m->m_len);
len += m->m_len;
}
m_freem(m0);
rate = sc->sc_tx_rate; /*XXX*/
awi_write_1(sc, ntxd + AWI_TXD_STATE, 0);
awi_write_4(sc, txd + AWI_TXD_START, frame);
awi_write_4(sc, txd + AWI_TXD_NEXT, ntxd);
awi_write_4(sc, txd + AWI_TXD_LENGTH, len);
awi_write_1(sc, txd + AWI_TXD_RATE, rate);
awi_write_4(sc, txd + AWI_TXD_NDA, 0);
awi_write_4(sc, txd + AWI_TXD_NRA, 0);
awi_write_1(sc, txd + AWI_TXD_STATE, AWI_TXD_ST_OWN);
sc->sc_txnext = ntxd;
sent++;
}
if (sent) {
if (sc->sc_tx_timer == 0)
sc->sc_tx_timer = 5;
ifp->if_timer = 1;
#ifdef AWI_DEBUG
if (awi_verbose)
printf("awi_start: sent %d txdone %d txnext %d txbase %d txend %d\n", sent, sc->sc_txdone, sc->sc_txnext, sc->sc_txbase, sc->sc_txend);
#endif
}
}
static void
awi_txint(sc)
struct awi_softc *sc;
{
struct ifnet *ifp = sc->sc_ifp;
u_int8_t flags;
while (sc->sc_txdone != sc->sc_txnext) {
flags = awi_read_1(sc, sc->sc_txdone + AWI_TXD_STATE);
if ((flags & AWI_TXD_ST_OWN) || !(flags & AWI_TXD_ST_DONE))
break;
if (flags & AWI_TXD_ST_ERROR)
ifp->if_oerrors++;
sc->sc_txdone = awi_read_4(sc, sc->sc_txdone + AWI_TXD_NEXT) &
0x7fff;
}
sc->sc_tx_timer = 0;
ifp->if_flags &= ~IFF_OACTIVE;
#ifdef AWI_DEBUG
if (awi_verbose)
printf("awi_txint: txdone %d txnext %d txbase %d txend %d\n",
sc->sc_txdone, sc->sc_txnext, sc->sc_txbase, sc->sc_txend);
#endif
awi_start(ifp);
}
static struct mbuf *
awi_fix_txhdr(sc, m0)
struct awi_softc *sc;
struct mbuf *m0;
{
struct ether_header eh;
struct ieee80211_frame *wh;
struct llc *llc;
if (m0->m_len < sizeof(eh)) {
m0 = m_pullup(m0, sizeof(eh));
if (m0 == NULL)
return NULL;
}
memcpy(&eh, mtod(m0, caddr_t), sizeof(eh));
if (sc->sc_format_llc) {
m_adj(m0, sizeof(struct ether_header) - sizeof(struct llc));
llc = mtod(m0, struct llc *);
llc->llc_dsap = llc->llc_ssap = LLC_SNAP_LSAP;
llc->llc_control = LLC_UI;
llc->llc_snap.org_code[0] = llc->llc_snap.org_code[1] =
llc->llc_snap.org_code[2] = 0;
llc->llc_snap.ether_type = eh.ether_type;
}
M_PREPEND(m0, sizeof(struct ieee80211_frame), M_DONTWAIT);
if (m0 == NULL)
return NULL;
wh = mtod(m0, struct ieee80211_frame *);
wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_DATA;
LE_WRITE_2(wh->i_dur, 0);
LE_WRITE_2(wh->i_seq, 0);
if (sc->sc_mib_local.Network_Mode) {
wh->i_fc[1] = IEEE80211_FC1_DIR_TODS;
memcpy(wh->i_addr1, sc->sc_bss.bssid, ETHER_ADDR_LEN);
memcpy(wh->i_addr2, eh.ether_shost, ETHER_ADDR_LEN);
memcpy(wh->i_addr3, eh.ether_dhost, ETHER_ADDR_LEN);
} else {
wh->i_fc[1] = IEEE80211_FC1_DIR_NODS;
memcpy(wh->i_addr1, eh.ether_dhost, ETHER_ADDR_LEN);
memcpy(wh->i_addr2, eh.ether_shost, ETHER_ADDR_LEN);
memcpy(wh->i_addr3, sc->sc_bss.bssid, ETHER_ADDR_LEN);
}
return m0;
}
static struct mbuf *
awi_fix_rxhdr(sc, m0)
struct awi_softc *sc;
struct mbuf *m0;
{
struct ieee80211_frame wh;
struct ether_header *eh;
struct llc *llc;
if (m0->m_len < sizeof(wh)) {
m_freem(m0);
return NULL;
}
llc = (struct llc *)(mtod(m0, caddr_t) + sizeof(wh));
if (llc->llc_dsap == LLC_SNAP_LSAP &&
llc->llc_ssap == LLC_SNAP_LSAP &&
llc->llc_control == LLC_UI &&
llc->llc_snap.org_code[0] == 0 &&
llc->llc_snap.org_code[1] == 0 &&
llc->llc_snap.org_code[2] == 0) {
memcpy(&wh, mtod(m0, caddr_t), sizeof(wh));
m_adj(m0, sizeof(wh) + sizeof(*llc) - sizeof(*eh));
eh = mtod(m0, struct ether_header *);
switch (wh.i_fc[1] & IEEE80211_FC1_DIR_MASK) {
case IEEE80211_FC1_DIR_NODS:
memcpy(eh->ether_dhost, wh.i_addr1, ETHER_ADDR_LEN);
memcpy(eh->ether_shost, wh.i_addr2, ETHER_ADDR_LEN);
break;
case IEEE80211_FC1_DIR_TODS:
memcpy(eh->ether_dhost, wh.i_addr3, ETHER_ADDR_LEN);
memcpy(eh->ether_shost, wh.i_addr2, ETHER_ADDR_LEN);
break;
case IEEE80211_FC1_DIR_FROMDS:
memcpy(eh->ether_dhost, wh.i_addr1, ETHER_ADDR_LEN);
memcpy(eh->ether_shost, wh.i_addr3, ETHER_ADDR_LEN);
break;
case IEEE80211_FC1_DIR_DSTODS:
m_freem(m0);
return NULL;
}
} else {
/* assuming ethernet encapsulation, just strip 802.11 header */
m_adj(m0, sizeof(wh));
}
if (ALIGN(mtod(m0, caddr_t) + sizeof(struct ether_header)) !=
(u_int)(mtod(m0, caddr_t) + sizeof(struct ether_header))) {
/* XXX: we loose to estimate the type of encapsulation */
struct mbuf *n, *n0, **np;
caddr_t newdata;
int off;
n0 = NULL;
np = &n0;
off = 0;
while (m0->m_pkthdr.len > off) {
if (n0 == NULL) {
MGETHDR(n, M_DONTWAIT, MT_DATA);
if (n == NULL) {
m_freem(m0);
return NULL;
}
M_COPY_PKTHDR(n, m0);
n->m_len = MHLEN;
} else {
MGET(n, M_DONTWAIT, MT_DATA);
if (n == NULL) {
m_freem(m0);
m_freem(n0);
return NULL;
}
n->m_len = MLEN;
}
if (m0->m_pkthdr.len - off >= MINCLSIZE) {
MCLGET(n, M_DONTWAIT);
if (n->m_flags & M_EXT)
n->m_len = n->m_ext.ext_size;
}
if (n0 == NULL) {
newdata = (caddr_t)
ALIGN(n->m_data
+ sizeof(struct ether_header))
- sizeof(struct ether_header);
n->m_len -= newdata - n->m_data;
n->m_data = newdata;
}
if (n->m_len > m0->m_pkthdr.len - off)
n->m_len = m0->m_pkthdr.len - off;
m_copydata(m0, off, n->m_len, mtod(n, caddr_t));
off += n->m_len;
*np = n;
np = &n->m_next;
}
m_freem(m0);
m0 = n0;
}
return m0;
}
static void
awi_input(sc, m, rxts, rssi)
struct awi_softc *sc;
struct mbuf *m;
u_int32_t rxts;
u_int8_t rssi;
{
struct ifnet *ifp = sc->sc_ifp;
struct ieee80211_frame *wh;
#ifndef __NetBSD__
struct ether_header *eh;
#endif
/* trim CRC here for WEP can find its own CRC at the end of packet. */
m_adj(m, -ETHER_CRC_LEN);
AWI_BPF_MTAP(sc, m, AWI_BPF_RAW);
wh = mtod(m, struct ieee80211_frame *);
if ((wh->i_fc[0] & IEEE80211_FC0_VERSION_MASK) !=
IEEE80211_FC0_VERSION_0) {
printf("%s; receive packet with wrong version: %x\n",
sc->sc_dev.dv_xname, wh->i_fc[0]);
m_freem(m);
ifp->if_ierrors++;
return;
}
if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
m = awi_wep_encrypt(sc, m, 0);
if (m == NULL) {
ifp->if_ierrors++;
return;
}
wh = mtod(m, struct ieee80211_frame *);
}
#ifdef AWI_DEBUG
if (awi_dump)
awi_dump_pkt(sc, m, rssi);
#endif
if ((sc->sc_mib_local.Network_Mode || !sc->sc_no_bssid) &&
sc->sc_status == AWI_ST_RUNNING) {
if (memcmp(wh->i_addr2, sc->sc_bss.bssid, ETHER_ADDR_LEN) == 0) {
sc->sc_rx_timer = 10;
sc->sc_bss.rssi = rssi;
}
}
switch (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) {
case IEEE80211_FC0_TYPE_DATA:
if (sc->sc_mib_local.Network_Mode) {
if ((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) !=
IEEE80211_FC1_DIR_FROMDS) {
m_freem(m);
return;
}
} else {
if ((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) !=
IEEE80211_FC1_DIR_NODS) {
m_freem(m);
return;
}
}
m = awi_fix_rxhdr(sc, m);
if (m == NULL) {
ifp->if_ierrors++;
break;
}
ifp->if_ipackets++;
#if !(defined(__FreeBSD__) && __FreeBSD__ >= 4)
AWI_BPF_MTAP(sc, m, AWI_BPF_NORM);
#endif
#ifdef __NetBSD__
(*ifp->if_input)(ifp, m);
#else
eh = mtod(m, struct ether_header *);
m_adj(m, sizeof(*eh));
ether_input(ifp, eh, m);
#endif
break;
case IEEE80211_FC0_TYPE_MGT:
if ((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) !=
IEEE80211_FC1_DIR_NODS) {
m_freem(m);
return;
}
switch (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) {
case IEEE80211_FC0_SUBTYPE_PROBE_RESP:
case IEEE80211_FC0_SUBTYPE_BEACON:
awi_recv_beacon(sc, m, rxts, rssi);
break;
case IEEE80211_FC0_SUBTYPE_AUTH:
awi_recv_auth(sc, m);
break;
case IEEE80211_FC0_SUBTYPE_ASSOC_RESP:
case IEEE80211_FC0_SUBTYPE_REASSOC_RESP:
awi_recv_asresp(sc, m);
break;
case IEEE80211_FC0_SUBTYPE_DEAUTH:
if (sc->sc_mib_local.Network_Mode)
awi_send_auth(sc, 1);
break;
case IEEE80211_FC0_SUBTYPE_DISASSOC:
if (sc->sc_mib_local.Network_Mode)
awi_send_asreq(sc, 1);
break;
}
m_freem(m);
break;
case IEEE80211_FC0_TYPE_CTL:
default:
/* should not come here */
m_freem(m);
break;
}
}
static void
awi_rxint(sc)
struct awi_softc *sc;
{
u_int8_t state, rate, rssi;
u_int16_t len;
u_int32_t frame, next, rxts, rxoff;
struct mbuf *m;
rxoff = sc->sc_rxdoff;
for (;;) {
state = awi_read_1(sc, rxoff + AWI_RXD_HOST_DESC_STATE);
if (state & AWI_RXD_ST_OWN)
break;
if (!(state & AWI_RXD_ST_CONSUMED)) {
if (state & AWI_RXD_ST_RXERROR)
sc->sc_ifp->if_ierrors++;
else {
len = awi_read_2(sc, rxoff + AWI_RXD_LEN);
rate = awi_read_1(sc, rxoff + AWI_RXD_RATE);
rssi = awi_read_1(sc, rxoff + AWI_RXD_RSSI);
frame = awi_read_4(sc, rxoff + AWI_RXD_START_FRAME) & 0x7fff;
rxts = awi_read_4(sc, rxoff + AWI_RXD_LOCALTIME);
m = awi_devget(sc, frame, len);
if (state & AWI_RXD_ST_LF)
awi_input(sc, m, rxts, rssi);
else
sc->sc_rxpend = m;
}
state |= AWI_RXD_ST_CONSUMED;
awi_write_1(sc, rxoff + AWI_RXD_HOST_DESC_STATE, state);
}
next = awi_read_4(sc, rxoff + AWI_RXD_NEXT);
if (next & AWI_RXD_NEXT_LAST)
break;
/* make sure the next pointer is correct */
if (next != awi_read_4(sc, rxoff + AWI_RXD_NEXT))
break;
state |= AWI_RXD_ST_OWN;
awi_write_1(sc, rxoff + AWI_RXD_HOST_DESC_STATE, state);
rxoff = next & 0x7fff;
}
sc->sc_rxdoff = rxoff;
}
static struct mbuf *
awi_devget(sc, off, len)
struct awi_softc *sc;
u_int32_t off;
u_int16_t len;
{
struct mbuf *m;
struct mbuf *top, **mp;
u_int tlen;
top = sc->sc_rxpend;
mp = &top;
if (top != NULL) {
sc->sc_rxpend = NULL;
top->m_pkthdr.len += len;
m = top;
while (*mp != NULL) {
m = *mp;
mp = &m->m_next;
}
if (m->m_flags & M_EXT)
tlen = m->m_ext.ext_size;
else if (m->m_flags & M_PKTHDR)
tlen = MHLEN;
else
tlen = MLEN;
tlen -= m->m_len;
if (tlen > len)
tlen = len;
awi_read_bytes(sc, off, mtod(m, u_int8_t *) + m->m_len, tlen);
off += tlen;
len -= tlen;
}
while (len > 0) {
if (top == NULL) {
MGETHDR(m, M_DONTWAIT, MT_DATA);
if (m == NULL)
return NULL;
m->m_pkthdr.rcvif = sc->sc_ifp;
m->m_pkthdr.len = len;
m->m_len = MHLEN;
} else {
MGET(m, M_DONTWAIT, MT_DATA);
if (m == NULL) {
m_freem(top);
return NULL;
}
m->m_len = MLEN;
}
if (len >= MINCLSIZE) {
MCLGET(m, M_DONTWAIT);
if (m->m_flags & M_EXT)
m->m_len = m->m_ext.ext_size;
}
if (top == NULL) {
int hdrlen = sizeof(struct ieee80211_frame) +
(sc->sc_format_llc ? sizeof(struct llc) :
sizeof(struct ether_header));
caddr_t newdata = (caddr_t)
ALIGN(m->m_data + hdrlen) - hdrlen;
m->m_len -= newdata - m->m_data;
m->m_data = newdata;
}
if (m->m_len > len)
m->m_len = len;
awi_read_bytes(sc, off, mtod(m, u_int8_t *), m->m_len);
off += m->m_len;
len -= m->m_len;
*mp = m;
mp = &m->m_next;
}
return top;
}
/*
* Initialize hardware and start firmware to accept commands.
* Called everytime after power on firmware.
*/
static int
awi_init_hw(sc)
struct awi_softc *sc;
{
u_int8_t status;
u_int16_t intmask;
int i, error;
sc->sc_enab_intr = 0;
sc->sc_invalid = 0; /* XXX: really? */
awi_drvstate(sc, AWI_DRV_RESET);
/* reset firmware */
am79c930_gcr_setbits(&sc->sc_chip, AM79C930_GCR_CORESET);
DELAY(100);
awi_write_1(sc, AWI_SELFTEST, 0);
awi_write_1(sc, AWI_CMD, 0);
awi_write_1(sc, AWI_BANNER, 0);
am79c930_gcr_clearbits(&sc->sc_chip, AM79C930_GCR_CORESET);
DELAY(100);
/* wait for selftest completion */
for (i = 0; ; i++) {
if (i >= AWI_SELFTEST_TIMEOUT*hz/1000) {
printf("%s: failed to complete selftest (timeout)\n",
sc->sc_dev.dv_xname);
return ENXIO;
}
status = awi_read_1(sc, AWI_SELFTEST);
if ((status & 0xf0) == 0xf0)
break;
if (sc->sc_cansleep) {
sc->sc_sleep_cnt++;
(void)tsleep(sc, PWAIT, "awitst", 1);
sc->sc_sleep_cnt--;
} else {
DELAY(1000*1000/hz);
}
}
if (status != AWI_SELFTEST_PASSED) {
printf("%s: failed to complete selftest (code %x)\n",
sc->sc_dev.dv_xname, status);
return ENXIO;
}
/* check banner to confirm firmware write it */
awi_read_bytes(sc, AWI_BANNER, sc->sc_banner, AWI_BANNER_LEN);
if (memcmp(sc->sc_banner, "PCnetMobile:", 12) != 0) {
printf("%s: failed to complete selftest (bad banner)\n",
sc->sc_dev.dv_xname);
for (i = 0; i < AWI_BANNER_LEN; i++)
printf("%s%02x", i ? ":" : "\t", sc->sc_banner[i]);
printf("\n");
return ENXIO;
}
/* initializing interrupt */
sc->sc_enab_intr = 1;
error = awi_intr_lock(sc);
if (error)
return error;
intmask = AWI_INT_GROGGY | AWI_INT_SCAN_CMPLT |
AWI_INT_TX | AWI_INT_RX | AWI_INT_CMD;
awi_write_1(sc, AWI_INTMASK, ~intmask & 0xff);
awi_write_1(sc, AWI_INTMASK2, 0);
awi_write_1(sc, AWI_INTSTAT, 0);
awi_write_1(sc, AWI_INTSTAT2, 0);
awi_intr_unlock(sc);
am79c930_gcr_setbits(&sc->sc_chip, AM79C930_GCR_ENECINT);
/* issueing interface test command */
error = awi_cmd(sc, AWI_CMD_NOP);
if (error) {
printf("%s: failed to complete selftest", sc->sc_dev.dv_xname);
if (error == ENXIO)
printf(" (no hardware)\n");
else if (error != EWOULDBLOCK)
printf(" (error %d)\n", error);
else if (sc->sc_cansleep)
printf(" (lost interrupt)\n");
else
printf(" (command timeout)\n");
}
return error;
}
/*
* Extract the factory default MIB value from firmware and assign the driver
* default value.
* Called once at attaching the interface.
*/
static int
awi_init_mibs(sc)
struct awi_softc *sc;
{
int i, error;
u_int8_t *rate;
if ((error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_LOCAL)) != 0 ||
(error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_ADDR)) != 0 ||
(error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_MAC)) != 0 ||
(error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_MGT)) != 0 ||
(error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_PHY)) != 0) {
printf("%s: failed to get default mib value (error %d)\n",
sc->sc_dev.dv_xname, error);
return error;
}
rate = sc->sc_mib_phy.aSuprt_Data_Rates;
sc->sc_tx_rate = AWI_RATE_1MBIT;
for (i = 0; i < rate[1]; i++) {
if (AWI_80211_RATE(rate[2 + i]) > sc->sc_tx_rate)
sc->sc_tx_rate = AWI_80211_RATE(rate[2 + i]);
}
awi_init_region(sc);
memset(&sc->sc_mib_mac.aDesired_ESS_ID, 0, AWI_ESS_ID_SIZE);
sc->sc_mib_mac.aDesired_ESS_ID[0] = IEEE80211_ELEMID_SSID;
sc->sc_mib_local.Fragmentation_Dis = 1;
sc->sc_mib_local.Accept_All_Multicast_Dis = 1;
sc->sc_mib_local.Power_Saving_Mode_Dis = 1;
/* allocate buffers */
sc->sc_txbase = AWI_BUFFERS;
sc->sc_txend = sc->sc_txbase +
(AWI_TXD_SIZE + sizeof(struct ieee80211_frame) +
sizeof(struct ether_header) + ETHERMTU) * AWI_NTXBUFS;
LE_WRITE_4(&sc->sc_mib_local.Tx_Buffer_Offset, sc->sc_txbase);
LE_WRITE_4(&sc->sc_mib_local.Tx_Buffer_Size,
sc->sc_txend - sc->sc_txbase);
LE_WRITE_4(&sc->sc_mib_local.Rx_Buffer_Offset, sc->sc_txend);
LE_WRITE_4(&sc->sc_mib_local.Rx_Buffer_Size,
AWI_BUFFERS_END - sc->sc_txend);
sc->sc_mib_local.Network_Mode = 1;
sc->sc_mib_local.Acting_as_AP = 0;
return 0;
}
/*
* Start transmitter and receiver of firmware
* Called after awi_init_hw() to start operation.
*/
static int
awi_init_txrx(sc)
struct awi_softc *sc;
{
int error;
/* start transmitter */
sc->sc_txdone = sc->sc_txnext = sc->sc_txbase;
awi_write_4(sc, sc->sc_txbase + AWI_TXD_START, 0);
awi_write_4(sc, sc->sc_txbase + AWI_TXD_NEXT, 0);
awi_write_4(sc, sc->sc_txbase + AWI_TXD_LENGTH, 0);
awi_write_1(sc, sc->sc_txbase + AWI_TXD_RATE, 0);
awi_write_4(sc, sc->sc_txbase + AWI_TXD_NDA, 0);
awi_write_4(sc, sc->sc_txbase + AWI_TXD_NRA, 0);
awi_write_1(sc, sc->sc_txbase + AWI_TXD_STATE, 0);
awi_write_4(sc, AWI_CMD_PARAMS+AWI_CA_TX_DATA, sc->sc_txbase);
awi_write_4(sc, AWI_CMD_PARAMS+AWI_CA_TX_MGT, 0);
awi_write_4(sc, AWI_CMD_PARAMS+AWI_CA_TX_BCAST, 0);
awi_write_4(sc, AWI_CMD_PARAMS+AWI_CA_TX_PS, 0);
awi_write_4(sc, AWI_CMD_PARAMS+AWI_CA_TX_CF, 0);
error = awi_cmd(sc, AWI_CMD_INIT_TX);
if (error)
return error;
/* start receiver */
if (sc->sc_rxpend) {
m_freem(sc->sc_rxpend);
sc->sc_rxpend = NULL;
}
error = awi_cmd(sc, AWI_CMD_INIT_RX);
if (error)
return error;
sc->sc_rxdoff = awi_read_4(sc, AWI_CMD_PARAMS+AWI_CA_IRX_DATA_DESC);
sc->sc_rxmoff = awi_read_4(sc, AWI_CMD_PARAMS+AWI_CA_IRX_PS_DESC);
return 0;
}
static void
awi_stop_txrx(sc)
struct awi_softc *sc;
{
if (sc->sc_cmd_inprog)
(void)awi_cmd_wait(sc);
(void)awi_cmd(sc, AWI_CMD_KILL_RX);
(void)awi_cmd_wait(sc);
sc->sc_cmd_inprog = AWI_CMD_FLUSH_TX;
awi_write_1(sc, AWI_CMD_PARAMS+AWI_CA_FTX_DATA, 1);
awi_write_1(sc, AWI_CMD_PARAMS+AWI_CA_FTX_MGT, 0);
awi_write_1(sc, AWI_CMD_PARAMS+AWI_CA_FTX_BCAST, 0);
awi_write_1(sc, AWI_CMD_PARAMS+AWI_CA_FTX_PS, 0);
awi_write_1(sc, AWI_CMD_PARAMS+AWI_CA_FTX_CF, 0);
(void)awi_cmd(sc, AWI_CMD_FLUSH_TX);
(void)awi_cmd_wait(sc);
}
int
awi_init_region(sc)
struct awi_softc *sc;
{
if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) {
switch (sc->sc_mib_phy.aCurrent_Reg_Domain) {
case AWI_REG_DOMAIN_US:
case AWI_REG_DOMAIN_CA:
case AWI_REG_DOMAIN_EU:
sc->sc_scan_min = 0;
sc->sc_scan_max = 77;
break;
case AWI_REG_DOMAIN_ES:
sc->sc_scan_min = 0;
sc->sc_scan_max = 26;
break;
case AWI_REG_DOMAIN_FR:
sc->sc_scan_min = 0;
sc->sc_scan_max = 32;
break;
case AWI_REG_DOMAIN_JP:
sc->sc_scan_min = 6;
sc->sc_scan_max = 17;
break;
default:
return EINVAL;
}
sc->sc_scan_set = sc->sc_scan_cur % 3 + 1;
} else {
switch (sc->sc_mib_phy.aCurrent_Reg_Domain) {
case AWI_REG_DOMAIN_US:
case AWI_REG_DOMAIN_CA:
sc->sc_scan_min = 1;
sc->sc_scan_max = 11;
sc->sc_scan_cur = 3;
break;
case AWI_REG_DOMAIN_EU:
sc->sc_scan_min = 1;
sc->sc_scan_max = 13;
sc->sc_scan_cur = 3;
break;
case AWI_REG_DOMAIN_ES:
sc->sc_scan_min = 10;
sc->sc_scan_max = 11;
sc->sc_scan_cur = 10;
break;
case AWI_REG_DOMAIN_FR:
sc->sc_scan_min = 10;
sc->sc_scan_max = 13;
sc->sc_scan_cur = 10;
break;
case AWI_REG_DOMAIN_JP:
sc->sc_scan_min = 14;
sc->sc_scan_max = 14;
sc->sc_scan_cur = 14;
break;
default:
return EINVAL;
}
}
sc->sc_ownch = sc->sc_scan_cur;
return 0;
}
static int
awi_start_scan(sc)
struct awi_softc *sc;
{
int error = 0;
struct awi_bss *bp;
while ((bp = TAILQ_FIRST(&sc->sc_scan)) != NULL) {
TAILQ_REMOVE(&sc->sc_scan, bp, list);
free(bp, M_DEVBUF);
}
if (!sc->sc_mib_local.Network_Mode && sc->sc_no_bssid) {
memset(&sc->sc_bss, 0, sizeof(sc->sc_bss));
sc->sc_bss.essid[0] = IEEE80211_ELEMID_SSID;
if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) {
sc->sc_bss.chanset = sc->sc_ownch % 3 + 1;
sc->sc_bss.pattern = sc->sc_ownch;
sc->sc_bss.index = 1;
sc->sc_bss.dwell_time = 200; /*XXX*/
} else
sc->sc_bss.chanset = sc->sc_ownch;
sc->sc_status = AWI_ST_SETSS;
error = awi_set_ss(sc);
} else {
if (sc->sc_mib_local.Network_Mode)
awi_drvstate(sc, AWI_DRV_INFSC);
else
awi_drvstate(sc, AWI_DRV_ADHSC);
sc->sc_start_bss = 0;
sc->sc_active_scan = 1;
sc->sc_mgt_timer = AWI_ASCAN_WAIT / 1000;
sc->sc_ifp->if_timer = 1;
sc->sc_status = AWI_ST_SCAN;
error = awi_cmd_scan(sc);
}
return error;
}
static int
awi_next_scan(sc)
struct awi_softc *sc;
{
int error;
for (;;) {
/*
* The pattern parameter for FH phy should be incremented
* by 3. But BayStack 650 Access Points apparently always
* assign hop pattern set parameter to 1 for any pattern.
* So we try all combinations of pattern/set parameters.
* Since this causes no error, it may be a bug of
* PCnetMobile firmware.
*/
sc->sc_scan_cur++;
if (sc->sc_scan_cur > sc->sc_scan_max) {
sc->sc_scan_cur = sc->sc_scan_min;
if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH)
sc->sc_scan_set = sc->sc_scan_set % 3 + 1;
}
error = awi_cmd_scan(sc);
if (error != EINVAL)
break;
}
return error;
}
static void
awi_stop_scan(sc)
struct awi_softc *sc;
{
struct ifnet *ifp = sc->sc_ifp;
struct awi_bss *bp, *sbp;
int fail;
bp = TAILQ_FIRST(&sc->sc_scan);
if (bp == NULL) {
notfound:
if (sc->sc_active_scan) {
if (ifp->if_flags & IFF_DEBUG)
printf("%s: entering passive scan mode\n",
sc->sc_dev.dv_xname);
sc->sc_active_scan = 0;
}
sc->sc_mgt_timer = AWI_PSCAN_WAIT / 1000;
ifp->if_timer = 1;
(void)awi_next_scan(sc);
return;
}
sbp = NULL;
if (ifp->if_flags & IFF_DEBUG)
printf("%s:\tmacaddr ch/pat sig flag wep essid\n",
sc->sc_dev.dv_xname);
for (; bp != NULL; bp = TAILQ_NEXT(bp, list)) {
if (bp->fails) {
/*
* The configuration of the access points may change
* during my scan. So we retries to associate with
* it unless there are any suitable AP.
*/
if (bp->fails++ < 3)
continue;
bp->fails = 0;
}
fail = 0;
/*
* Since the firmware apparently scans not only the specified
* channel of SCAN command but all available channel within
* the region, we should filter out unnecessary responses here.
*/
if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) {
if (bp->pattern < sc->sc_scan_min ||
bp->pattern > sc->sc_scan_max)
fail |= 0x01;
} else {
if (bp->chanset < sc->sc_scan_min ||
bp->chanset > sc->sc_scan_max)
fail |= 0x01;
}
if (sc->sc_mib_local.Network_Mode) {
if (!(bp->capinfo & IEEE80211_CAPINFO_ESS) ||
(bp->capinfo & IEEE80211_CAPINFO_IBSS))
fail |= 0x02;
} else {
if ((bp->capinfo & IEEE80211_CAPINFO_ESS) ||
!(bp->capinfo & IEEE80211_CAPINFO_IBSS))
fail |= 0x02;
}
if (sc->sc_wep_algo == NULL) {
if (bp->capinfo & IEEE80211_CAPINFO_PRIVACY)
fail |= 0x04;
} else {
if (!(bp->capinfo & IEEE80211_CAPINFO_PRIVACY))
fail |= 0x04;
}
if (sc->sc_mib_mac.aDesired_ESS_ID[1] != 0 &&
memcmp(&sc->sc_mib_mac.aDesired_ESS_ID, bp->essid,
sizeof(bp->essid)) != 0)
fail |= 0x08;
if (ifp->if_flags & IFF_DEBUG) {
printf(" %c %s", fail ? '-' : '+',
ether_sprintf(bp->esrc));
if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH)
printf(" %2d/%d%c", bp->pattern, bp->chanset,
fail & 0x01 ? '!' : ' ');
else
printf(" %4d%c", bp->chanset,
fail & 0x01 ? '!' : ' ');
printf(" %+4d", bp->rssi);
printf(" %4s%c",
(bp->capinfo & IEEE80211_CAPINFO_ESS) ? "ess" :
(bp->capinfo & IEEE80211_CAPINFO_IBSS) ? "ibss" :
"????",
fail & 0x02 ? '!' : ' ');
printf(" %3s%c ",
(bp->capinfo & IEEE80211_CAPINFO_PRIVACY) ? "wep" :
"no",
fail & 0x04 ? '!' : ' ');
awi_print_essid(bp->essid);
printf("%s\n", fail & 0x08 ? "!" : "");
}
if (!fail) {
if (sbp == NULL || bp->rssi > sbp->rssi)
sbp = bp;
}
}
if (sbp == NULL)
goto notfound;
sc->sc_bss = *sbp;
(void)awi_set_ss(sc);
}
static void
awi_recv_beacon(sc, m0, rxts, rssi)
struct awi_softc *sc;
struct mbuf *m0;
u_int32_t rxts;
u_int8_t rssi;
{
struct ieee80211_frame *wh;
struct awi_bss *bp;
u_int8_t *frame, *eframe;
u_int8_t *tstamp, *bintval, *capinfo, *ssid, *rates, *parms;
if (sc->sc_status != AWI_ST_SCAN)
return;
wh = mtod(m0, struct ieee80211_frame *);
frame = (u_int8_t *)&wh[1];
eframe = mtod(m0, u_int8_t *) + m0->m_len;
/*
* XXX:
* timestamp [8]
* beacon interval [2]
* capability information [2]
* ssid [tlv]
* supported rates [tlv]
* parameter set [tlv]
* ...
*/
if (frame + 12 > eframe) {
#ifdef AWI_DEBUG
if (awi_verbose)
printf("awi_recv_beacon: frame too short \n");
#endif
return;
}
tstamp = frame;
frame += 8;
bintval = frame;
frame += 2;
capinfo = frame;
frame += 2;
ssid = rates = parms = NULL;
while (frame < eframe) {
switch (*frame) {
case IEEE80211_ELEMID_SSID:
ssid = frame;
break;
case IEEE80211_ELEMID_RATES:
rates = frame;
break;
case IEEE80211_ELEMID_FHPARMS:
case IEEE80211_ELEMID_DSPARMS:
parms = frame;
break;
}
frame += frame[1] + 2;
}
if (ssid == NULL || rates == NULL || parms == NULL) {
#ifdef AWI_DEBUG
if (awi_verbose)
printf("awi_recv_beacon: ssid=%p, rates=%p, parms=%p\n",
ssid, rates, parms);
#endif
return;
}
if (ssid[1] > IEEE80211_NWID_LEN) {
#ifdef AWI_DEBUG
if (awi_verbose)
printf("awi_recv_beacon: bad ssid len: %d from %s\n",
ssid[1], ether_sprintf(wh->i_addr2));
#endif
return;
}
for (bp = TAILQ_FIRST(&sc->sc_scan); bp != NULL;
bp = TAILQ_NEXT(bp, list)) {
if (memcmp(bp->esrc, wh->i_addr2, ETHER_ADDR_LEN) == 0 &&
memcmp(bp->bssid, wh->i_addr3, ETHER_ADDR_LEN) == 0)
break;
}
if (bp == NULL) {
bp = malloc(sizeof(struct awi_bss), M_DEVBUF, M_NOWAIT);
if (bp == NULL)
return;
TAILQ_INSERT_TAIL(&sc->sc_scan, bp, list);
memcpy(bp->esrc, wh->i_addr2, ETHER_ADDR_LEN);
memcpy(bp->bssid, wh->i_addr3, ETHER_ADDR_LEN);
memset(bp->essid, 0, sizeof(bp->essid));
memcpy(bp->essid, ssid, 2 + ssid[1]);
}
bp->rssi = rssi;
bp->rxtime = rxts;
memcpy(bp->timestamp, tstamp, sizeof(bp->timestamp));
bp->interval = LE_READ_2(bintval);
bp->capinfo = LE_READ_2(capinfo);
if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) {
bp->chanset = parms[4];
bp->pattern = parms[5];
bp->index = parms[6];
bp->dwell_time = LE_READ_2(parms + 2);
} else {
bp->chanset = parms[2];
bp->pattern = 0;
bp->index = 0;
bp->dwell_time = 0;
}
if (sc->sc_mgt_timer == 0)
awi_stop_scan(sc);
}
static int
awi_set_ss(sc)
struct awi_softc *sc;
{
struct ifnet *ifp = sc->sc_ifp;
struct awi_bss *bp;
int error;
sc->sc_status = AWI_ST_SETSS;
bp = &sc->sc_bss;
if (ifp->if_flags & IFF_DEBUG) {
printf("%s: ch %d pat %d id %d dw %d iv %d bss %s ssid ",
sc->sc_dev.dv_xname, bp->chanset,
bp->pattern, bp->index, bp->dwell_time, bp->interval,
ether_sprintf(bp->bssid));
awi_print_essid(bp->essid);
printf("\n");
}
memcpy(&sc->sc_mib_mgt.aCurrent_BSS_ID, bp->bssid, ETHER_ADDR_LEN);
memcpy(&sc->sc_mib_mgt.aCurrent_ESS_ID, bp->essid,
AWI_ESS_ID_SIZE);
LE_WRITE_2(&sc->sc_mib_mgt.aBeacon_Period, bp->interval);
error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MGT);
return error;
}
static void
awi_try_sync(sc)
struct awi_softc *sc;
{
struct awi_bss *bp;
sc->sc_status = AWI_ST_SYNC;
bp = &sc->sc_bss;
if (sc->sc_cmd_inprog) {
if (awi_cmd_wait(sc))
return;
}
sc->sc_cmd_inprog = AWI_CMD_SYNC;
awi_write_1(sc, AWI_CMD_PARAMS+AWI_CA_SYNC_SET, bp->chanset);
awi_write_1(sc, AWI_CMD_PARAMS+AWI_CA_SYNC_PATTERN, bp->pattern);
awi_write_1(sc, AWI_CMD_PARAMS+AWI_CA_SYNC_IDX, bp->index);
awi_write_1(sc, AWI_CMD_PARAMS+AWI_CA_SYNC_STARTBSS,
sc->sc_start_bss ? 1 : 0);
awi_write_2(sc, AWI_CMD_PARAMS+AWI_CA_SYNC_DWELL, bp->dwell_time);
awi_write_2(sc, AWI_CMD_PARAMS+AWI_CA_SYNC_MBZ, 0);
awi_write_bytes(sc, AWI_CMD_PARAMS+AWI_CA_SYNC_TIMESTAMP,
bp->timestamp, 8);
awi_write_4(sc, AWI_CMD_PARAMS+AWI_CA_SYNC_REFTIME, bp->rxtime);
(void)awi_cmd(sc, AWI_CMD_SYNC);
}
static void
awi_sync_done(sc)
struct awi_softc *sc;
{
struct ifnet *ifp = sc->sc_ifp;
if (sc->sc_mib_local.Network_Mode) {
awi_drvstate(sc, AWI_DRV_INFSY);
awi_send_auth(sc, 1);
} else {
printf("%s: synced with", sc->sc_dev.dv_xname);
if (sc->sc_no_bssid)
printf(" no-bssid");
else {
printf(" %s ssid ", ether_sprintf(sc->sc_bss.bssid));
awi_print_essid(sc->sc_bss.essid);
}
if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH)
printf(" at chanset %d pattern %d\n",
sc->sc_bss.chanset, sc->sc_bss.pattern);
else
printf(" at channel %d\n", sc->sc_bss.chanset);
awi_drvstate(sc, AWI_DRV_ADHSY);
sc->sc_status = AWI_ST_RUNNING;
ifp->if_flags |= IFF_RUNNING;
awi_start(ifp);
}
}
static void
awi_send_deauth(sc)
struct awi_softc *sc;
{
struct ifnet *ifp = sc->sc_ifp;
struct mbuf *m;
struct ieee80211_frame *wh;
u_int8_t *deauth;
MGETHDR(m, M_DONTWAIT, MT_DATA);
if (m == NULL)
return;
if (ifp->if_flags & IFF_DEBUG)
printf("%s: sending deauth to %s\n", sc->sc_dev.dv_xname,
ether_sprintf(sc->sc_bss.bssid));
wh = mtod(m, struct ieee80211_frame *);
wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT |
IEEE80211_FC0_SUBTYPE_AUTH;
wh->i_fc[1] = IEEE80211_FC1_DIR_NODS;
LE_WRITE_2(wh->i_dur, 0);
LE_WRITE_2(wh->i_seq, 0);
memcpy(wh->i_addr1, sc->sc_bss.bssid, ETHER_ADDR_LEN);
memcpy(wh->i_addr2, sc->sc_mib_addr.aMAC_Address, ETHER_ADDR_LEN);
memcpy(wh->i_addr3, sc->sc_bss.bssid, ETHER_ADDR_LEN);
deauth = (u_int8_t *)&wh[1];
LE_WRITE_2(deauth, IEEE80211_REASON_AUTH_LEAVE);
deauth += 2;
m->m_pkthdr.len = m->m_len = deauth - mtod(m, u_int8_t *);
IF_ENQUEUE(&sc->sc_mgtq, m);
awi_start(ifp);
awi_drvstate(sc, AWI_DRV_INFTOSS);
}
static void
awi_send_auth(sc, seq)
struct awi_softc *sc;
int seq;
{
struct ifnet *ifp = sc->sc_ifp;
struct mbuf *m;
struct ieee80211_frame *wh;
u_int8_t *auth;
MGETHDR(m, M_DONTWAIT, MT_DATA);
if (m == NULL)
return;
sc->sc_status = AWI_ST_AUTH;
if (ifp->if_flags & IFF_DEBUG)
printf("%s: sending auth to %s\n", sc->sc_dev.dv_xname,
ether_sprintf(sc->sc_bss.bssid));
wh = mtod(m, struct ieee80211_frame *);
wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT |
IEEE80211_FC0_SUBTYPE_AUTH;
wh->i_fc[1] = IEEE80211_FC1_DIR_NODS;
LE_WRITE_2(wh->i_dur, 0);
LE_WRITE_2(wh->i_seq, 0);
memcpy(wh->i_addr1, sc->sc_bss.esrc, ETHER_ADDR_LEN);
memcpy(wh->i_addr2, sc->sc_mib_addr.aMAC_Address, ETHER_ADDR_LEN);
memcpy(wh->i_addr3, sc->sc_bss.bssid, ETHER_ADDR_LEN);
auth = (u_int8_t *)&wh[1];
/* algorithm number */
LE_WRITE_2(auth, IEEE80211_AUTH_ALG_OPEN);
auth += 2;
/* sequence number */
LE_WRITE_2(auth, seq);
auth += 2;
/* status */
LE_WRITE_2(auth, 0);
auth += 2;
m->m_pkthdr.len = m->m_len = auth - mtod(m, u_int8_t *);
IF_ENQUEUE(&sc->sc_mgtq, m);
awi_start(ifp);
sc->sc_mgt_timer = AWI_TRANS_TIMEOUT / 1000;
ifp->if_timer = 1;
}
static void
awi_recv_auth(sc, m0)
struct awi_softc *sc;
struct mbuf *m0;
{
struct ieee80211_frame *wh;
u_int8_t *auth, *eframe;
struct awi_bss *bp;
u_int16_t status;
wh = mtod(m0, struct ieee80211_frame *);
auth = (u_int8_t *)&wh[1];
eframe = mtod(m0, u_int8_t *) + m0->m_len;
if (sc->sc_ifp->if_flags & IFF_DEBUG)
printf("%s: receive auth from %s\n", sc->sc_dev.dv_xname,
ether_sprintf(wh->i_addr2));
/* algorithm number */
if (LE_READ_2(auth) != IEEE80211_AUTH_ALG_OPEN)
return;
auth += 2;
if (!sc->sc_mib_local.Network_Mode) {
if (sc->sc_status != AWI_ST_RUNNING)
return;
if (LE_READ_2(auth) == 1)
awi_send_auth(sc, 2);
return;
}
if (sc->sc_status != AWI_ST_AUTH)
return;
/* sequence number */
if (LE_READ_2(auth) != 2)
return;
auth += 2;
/* status */
status = LE_READ_2(auth);
if (status != 0) {
printf("%s: authentication failed (reason %d)\n",
sc->sc_dev.dv_xname, status);
for (bp = TAILQ_FIRST(&sc->sc_scan); bp != NULL;
bp = TAILQ_NEXT(bp, list)) {
if (memcmp(bp->esrc, sc->sc_bss.esrc, ETHER_ADDR_LEN)
== 0) {
bp->fails++;
break;
}
}
return;
}
sc->sc_mgt_timer = 0;
awi_drvstate(sc, AWI_DRV_INFAUTH);
awi_send_asreq(sc, 0);
}
static void
awi_send_asreq(sc, reassoc)
struct awi_softc *sc;
int reassoc;
{
struct ifnet *ifp = sc->sc_ifp;
struct mbuf *m;
struct ieee80211_frame *wh;
u_int16_t lintval;
u_int8_t *asreq;
MGETHDR(m, M_DONTWAIT, MT_DATA);
if (m == NULL)
return;
sc->sc_status = AWI_ST_ASSOC;
if (ifp->if_flags & IFF_DEBUG)
printf("%s: sending %sassoc req to %s\n", sc->sc_dev.dv_xname,
reassoc ? "re" : "",
ether_sprintf(sc->sc_bss.bssid));
wh = mtod(m, struct ieee80211_frame *);
wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT;
if (reassoc)
wh->i_fc[0] |= IEEE80211_FC0_SUBTYPE_REASSOC_REQ;
else
wh->i_fc[0] |= IEEE80211_FC0_SUBTYPE_ASSOC_REQ;
wh->i_fc[1] = IEEE80211_FC1_DIR_NODS;
LE_WRITE_2(wh->i_dur, 0);
LE_WRITE_2(wh->i_seq, 0);
memcpy(wh->i_addr1, sc->sc_bss.esrc, ETHER_ADDR_LEN);
memcpy(wh->i_addr2, sc->sc_mib_addr.aMAC_Address, ETHER_ADDR_LEN);
memcpy(wh->i_addr3, sc->sc_bss.bssid, ETHER_ADDR_LEN);
asreq = (u_int8_t *)&wh[1];
/* capability info */
LE_WRITE_2(asreq, IEEE80211_CAPINFO_CF_POLLABLE);
asreq += 2;
/* listen interval */
lintval = LE_READ_2(&sc->sc_mib_mgt.aListen_Interval);
LE_WRITE_2(asreq, lintval);
asreq += 2;
if (reassoc) {
/* current AP address */
memcpy(asreq, sc->sc_bss.bssid, ETHER_ADDR_LEN);
asreq += ETHER_ADDR_LEN;
}
/* ssid */
memcpy(asreq, sc->sc_bss.essid, 2 + sc->sc_bss.essid[1]);
asreq += 2 + asreq[1];
/* supported rates */
memcpy(asreq, &sc->sc_mib_phy.aSuprt_Data_Rates, 4);
asreq += 2 + asreq[1];
m->m_pkthdr.len = m->m_len = asreq - mtod(m, u_int8_t *);
IF_ENQUEUE(&sc->sc_mgtq, m);
awi_start(ifp);
sc->sc_mgt_timer = AWI_TRANS_TIMEOUT / 1000;
ifp->if_timer = 1;
}
static void
awi_recv_asresp(sc, m0)
struct awi_softc *sc;
struct mbuf *m0;
{
struct ieee80211_frame *wh;
u_int8_t *asresp, *eframe;
u_int16_t status;
u_int8_t rate, *phy_rates;
struct awi_bss *bp;
int i, j;
wh = mtod(m0, struct ieee80211_frame *);
asresp = (u_int8_t *)&wh[1];
eframe = mtod(m0, u_int8_t *) + m0->m_len;
if (sc->sc_ifp->if_flags & IFF_DEBUG)
printf("%s: receive assoc resp from %s\n", sc->sc_dev.dv_xname,
ether_sprintf(wh->i_addr2));
if (!sc->sc_mib_local.Network_Mode)
return;
if (sc->sc_status != AWI_ST_ASSOC)
return;
/* capability info */
asresp += 2;
/* status */
status = LE_READ_2(asresp);
if (status != 0) {
printf("%s: association failed (reason %d)\n",
sc->sc_dev.dv_xname, status);
for (bp = TAILQ_FIRST(&sc->sc_scan); bp != NULL;
bp = TAILQ_NEXT(bp, list)) {
if (memcmp(bp->esrc, sc->sc_bss.esrc, ETHER_ADDR_LEN)
== 0) {
bp->fails++;
break;
}
}
return;
}
asresp += 2;
/* association id */
asresp += 2;
/* supported rates */
rate = AWI_RATE_1MBIT;
for (i = 0; i < asresp[1]; i++) {
if (AWI_80211_RATE(asresp[2 + i]) <= rate)
continue;
phy_rates = sc->sc_mib_phy.aSuprt_Data_Rates;
for (j = 0; j < phy_rates[1]; j++) {
if (AWI_80211_RATE(asresp[2 + i]) ==
AWI_80211_RATE(phy_rates[2 + j]))
rate = AWI_80211_RATE(asresp[2 + i]);
}
}
printf("%s: associated with %s ssid ",
sc->sc_dev.dv_xname, ether_sprintf(sc->sc_bss.bssid));
awi_print_essid(sc->sc_bss.essid);
if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH)
printf(" chanset %d pattern %d",
sc->sc_bss.chanset, sc->sc_bss.pattern);
else
printf(" channel %d", sc->sc_bss.chanset);
printf(" signal %d\n", sc->sc_bss.rssi);
sc->sc_tx_rate = rate;
sc->sc_mgt_timer = 0;
sc->sc_rx_timer = 10;
sc->sc_ifp->if_timer = 1;
sc->sc_status = AWI_ST_RUNNING;
sc->sc_ifp->if_flags |= IFF_RUNNING;
awi_drvstate(sc, AWI_DRV_INFASSOC);
awi_start(sc->sc_ifp);
}
static int
awi_mib(sc, cmd, mib)
struct awi_softc *sc;
u_int8_t cmd;
u_int8_t mib;
{
int error;
u_int8_t size, *ptr;
switch (mib) {
case AWI_MIB_LOCAL:
ptr = (u_int8_t *)&sc->sc_mib_local;
size = sizeof(sc->sc_mib_local);
break;
case AWI_MIB_ADDR:
ptr = (u_int8_t *)&sc->sc_mib_addr;
size = sizeof(sc->sc_mib_addr);
break;
case AWI_MIB_MAC:
ptr = (u_int8_t *)&sc->sc_mib_mac;
size = sizeof(sc->sc_mib_mac);
break;
case AWI_MIB_STAT:
ptr = (u_int8_t *)&sc->sc_mib_stat;
size = sizeof(sc->sc_mib_stat);
break;
case AWI_MIB_MGT:
ptr = (u_int8_t *)&sc->sc_mib_mgt;
size = sizeof(sc->sc_mib_mgt);
break;
case AWI_MIB_PHY:
ptr = (u_int8_t *)&sc->sc_mib_phy;
size = sizeof(sc->sc_mib_phy);
break;
default:
return EINVAL;
}
if (sc->sc_cmd_inprog) {
error = awi_cmd_wait(sc);
if (error) {
if (error == EWOULDBLOCK)
printf("awi_mib: cmd %d inprog",
sc->sc_cmd_inprog);
return error;
}
}
sc->sc_cmd_inprog = cmd;
if (cmd == AWI_CMD_SET_MIB)
awi_write_bytes(sc, AWI_CMD_PARAMS+AWI_CA_MIB_DATA, ptr, size);
awi_write_1(sc, AWI_CMD_PARAMS+AWI_CA_MIB_TYPE, mib);
awi_write_1(sc, AWI_CMD_PARAMS+AWI_CA_MIB_SIZE, size);
awi_write_1(sc, AWI_CMD_PARAMS+AWI_CA_MIB_INDEX, 0);
error = awi_cmd(sc, cmd);
if (error)
return error;
if (cmd == AWI_CMD_GET_MIB) {
awi_read_bytes(sc, AWI_CMD_PARAMS+AWI_CA_MIB_DATA, ptr, size);
#ifdef AWI_DEBUG
if (awi_verbose) {
int i;
printf("awi_mib: #%d:", mib);
for (i = 0; i < size; i++)
printf(" %02x", ptr[i]);
printf("\n");
}
#endif
}
return 0;
}
static int
awi_cmd_scan(sc)
struct awi_softc *sc;
{
int error;
u_int8_t scan_mode;
if (sc->sc_active_scan)
scan_mode = AWI_SCAN_ACTIVE;
else
scan_mode = AWI_SCAN_PASSIVE;
if (sc->sc_mib_mgt.aScan_Mode != scan_mode) {
sc->sc_mib_mgt.aScan_Mode = scan_mode;
error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MGT);
return error;
}
if (sc->sc_cmd_inprog) {
error = awi_cmd_wait(sc);
if (error)
return error;
}
sc->sc_cmd_inprog = AWI_CMD_SCAN;
awi_write_2(sc, AWI_CMD_PARAMS+AWI_CA_SCAN_DURATION,
sc->sc_active_scan ? AWI_ASCAN_DURATION : AWI_PSCAN_DURATION);
if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) {
awi_write_1(sc, AWI_CMD_PARAMS+AWI_CA_SCAN_SET,
sc->sc_scan_set);
awi_write_1(sc, AWI_CMD_PARAMS+AWI_CA_SCAN_PATTERN,
sc->sc_scan_cur);
awi_write_1(sc, AWI_CMD_PARAMS+AWI_CA_SCAN_IDX, 1);
} else {
awi_write_1(sc, AWI_CMD_PARAMS+AWI_CA_SCAN_SET,
sc->sc_scan_cur);
awi_write_1(sc, AWI_CMD_PARAMS+AWI_CA_SCAN_PATTERN, 0);
awi_write_1(sc, AWI_CMD_PARAMS+AWI_CA_SCAN_IDX, 0);
}
awi_write_1(sc, AWI_CMD_PARAMS+AWI_CA_SCAN_SUSP, 0);
return awi_cmd(sc, AWI_CMD_SCAN);
}
static int
awi_cmd(sc, cmd)
struct awi_softc *sc;
u_int8_t cmd;
{
u_int8_t status;
int error = 0;
sc->sc_cmd_inprog = cmd;
awi_write_1(sc, AWI_CMD_STATUS, AWI_STAT_IDLE);
awi_write_1(sc, AWI_CMD, cmd);
if (sc->sc_status != AWI_ST_INIT)
return 0;
error = awi_cmd_wait(sc);
if (error)
return error;
status = awi_read_1(sc, AWI_CMD_STATUS);
awi_write_1(sc, AWI_CMD, 0);
switch (status) {
case AWI_STAT_OK:
break;
case AWI_STAT_BADPARM:
return EINVAL;
default:
printf("%s: command %d failed %x\n",
sc->sc_dev.dv_xname, cmd, status);
return ENXIO;
}
return 0;
}
static void
awi_cmd_done(sc)
struct awi_softc *sc;
{
u_int8_t cmd, status;
status = awi_read_1(sc, AWI_CMD_STATUS);
if (status == AWI_STAT_IDLE)
return; /* stray interrupt */
cmd = sc->sc_cmd_inprog;
sc->sc_cmd_inprog = 0;
if (sc->sc_status == AWI_ST_INIT) {
wakeup(sc);
return;
}
awi_write_1(sc, AWI_CMD, 0);
if (status != AWI_STAT_OK) {
printf("%s: command %d failed %x\n",
sc->sc_dev.dv_xname, cmd, status);
return;
}
switch (sc->sc_status) {
case AWI_ST_SCAN:
if (cmd == AWI_CMD_SET_MIB)
awi_cmd_scan(sc); /* retry */
break;
case AWI_ST_SETSS:
awi_try_sync(sc);
break;
case AWI_ST_SYNC:
awi_sync_done(sc);
break;
default:
break;
}
}
static int
awi_next_txd(sc, len, framep, ntxdp)
struct awi_softc *sc;
int len;
u_int32_t *framep, *ntxdp;
{
u_int32_t txd, ntxd, frame;
txd = sc->sc_txnext;
frame = txd + AWI_TXD_SIZE;
if (frame + len > sc->sc_txend)
frame = sc->sc_txbase;
ntxd = frame + len;
if (ntxd + AWI_TXD_SIZE > sc->sc_txend)
ntxd = sc->sc_txbase;
*framep = frame;
*ntxdp = ntxd;
/*
* Determine if there are any room in ring buffer.
* --- send wait, === new data, +++ conflict (ENOBUFS)
* base........................end
* done----txd=====ntxd OK
* --txd=====done++++ntxd-- full
* --txd=====ntxd done-- OK
* ==ntxd done----txd=== OK
* ==done++++ntxd----txd=== full
* ++ntxd txd=====done++ full
*/
if (txd < ntxd) {
if (txd < sc->sc_txdone && ntxd + AWI_TXD_SIZE > sc->sc_txdone)
return ENOBUFS;
} else {
if (txd < sc->sc_txdone || ntxd + AWI_TXD_SIZE > sc->sc_txdone)
return ENOBUFS;
}
return 0;
}
static int
awi_lock(sc)
struct awi_softc *sc;
{
int error = 0;
if (curproc == NULL) {
/*
* XXX
* Though driver ioctl should be called with context,
* KAME ipv6 stack calls ioctl in interrupt for now.
* We simply abort the request if there are other
* ioctl requests in progress.
*/
if (sc->sc_busy) {
return EWOULDBLOCK;
if (sc->sc_invalid)
return ENXIO;
}
sc->sc_busy = 1;
sc->sc_cansleep = 0;
return 0;
}
while (sc->sc_busy) {
if (sc->sc_invalid)
return ENXIO;
sc->sc_sleep_cnt++;
error = tsleep(sc, PWAIT | PCATCH, "awilck", 0);
sc->sc_sleep_cnt--;
if (error)
return error;
}
sc->sc_busy = 1;
sc->sc_cansleep = 1;
return 0;
}
static void
awi_unlock(sc)
struct awi_softc *sc;
{
sc->sc_busy = 0;
sc->sc_cansleep = 0;
if (sc->sc_sleep_cnt)
wakeup(sc);
}
static int
awi_intr_lock(sc)
struct awi_softc *sc;
{
u_int8_t status;
int i, retry;
status = 1;
for (retry = 0; retry < 10; retry++) {
for (i = 0; i < AWI_LOCKOUT_TIMEOUT*1000/5; i++) {
status = awi_read_1(sc, AWI_LOCKOUT_HOST);
if (status == 0)
break;
DELAY(5);
}
if (status != 0)
break;
awi_write_1(sc, AWI_LOCKOUT_MAC, 1);
status = awi_read_1(sc, AWI_LOCKOUT_HOST);
if (status == 0)
break;
awi_write_1(sc, AWI_LOCKOUT_MAC, 0);
}
if (status != 0) {
printf("%s: failed to lock interrupt\n",
sc->sc_dev.dv_xname);
return ENXIO;
}
return 0;
}
static void
awi_intr_unlock(sc)
struct awi_softc *sc;
{
awi_write_1(sc, AWI_LOCKOUT_MAC, 0);
}
static int
awi_cmd_wait(sc)
struct awi_softc *sc;
{
int i, error = 0;
i = 0;
while (sc->sc_cmd_inprog) {
if (sc->sc_invalid)
return ENXIO;
if (awi_read_1(sc, AWI_CMD) != sc->sc_cmd_inprog) {
printf("%s: failed to access hardware\n",
sc->sc_dev.dv_xname);
sc->sc_invalid = 1;
return ENXIO;
}
if (sc->sc_cansleep) {
sc->sc_sleep_cnt++;
error = tsleep(sc, PWAIT, "awicmd",
AWI_CMD_TIMEOUT*hz/1000);
sc->sc_sleep_cnt--;
} else {
if (awi_read_1(sc, AWI_CMD_STATUS) != AWI_STAT_IDLE) {
awi_cmd_done(sc);
break;
}
if (i++ >= AWI_CMD_TIMEOUT*1000/10)
error = EWOULDBLOCK;
else
DELAY(10);
}
if (error)
break;
}
return error;
}
static void
awi_print_essid(essid)
u_int8_t *essid;
{
int i, len;
u_int8_t *p;
len = essid[1];
if (len > IEEE80211_NWID_LEN)
len = IEEE80211_NWID_LEN; /*XXX*/
/* determine printable or not */
for (i = 0, p = essid + 2; i < len; i++, p++) {
if (*p < ' ' || *p > 0x7e)
break;
}
if (i == len) {
printf("\"");
for (i = 0, p = essid + 2; i < len; i++, p++)
printf("%c", *p);
printf("\"");
} else {
printf("0x");
for (i = 0, p = essid + 2; i < len; i++, p++)
printf("%02x", *p);
}
}
#ifdef AWI_DEBUG
static void
awi_dump_pkt(sc, m, rssi)
struct awi_softc *sc;
struct mbuf *m;
int rssi;
{
struct ieee80211_frame *wh;
int i, l;
wh = mtod(m, struct ieee80211_frame *);
if (awi_dump_mask != 0 &&
((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK)==IEEE80211_FC1_DIR_NODS) &&
((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK)==IEEE80211_FC0_TYPE_MGT)) {
if ((AWI_DUMP_MASK(wh->i_fc[0]) & awi_dump_mask) != 0)
return;
}
if (awi_dump_mask < 0 &&
(wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK)==IEEE80211_FC0_TYPE_DATA)
return;
if (rssi < 0)
printf("tx: ");
else
printf("rx: ");
switch (wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) {
case IEEE80211_FC1_DIR_NODS:
printf("NODS %s", ether_sprintf(wh->i_addr2));
printf("->%s", ether_sprintf(wh->i_addr1));
printf("(%s)", ether_sprintf(wh->i_addr3));
break;
case IEEE80211_FC1_DIR_TODS:
printf("TODS %s", ether_sprintf(wh->i_addr2));
printf("->%s", ether_sprintf(wh->i_addr3));
printf("(%s)", ether_sprintf(wh->i_addr1));
break;
case IEEE80211_FC1_DIR_FROMDS:
printf("FRDS %s", ether_sprintf(wh->i_addr3));
printf("->%s", ether_sprintf(wh->i_addr1));
printf("(%s)", ether_sprintf(wh->i_addr2));
break;
case IEEE80211_FC1_DIR_DSTODS:
printf("DSDS %s", ether_sprintf((u_int8_t *)&wh[1]));
printf("->%s", ether_sprintf(wh->i_addr3));
printf("(%s", ether_sprintf(wh->i_addr2));
printf("->%s)", ether_sprintf(wh->i_addr1));
break;
}
switch (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) {
case IEEE80211_FC0_TYPE_DATA:
printf(" data");
break;
case IEEE80211_FC0_TYPE_MGT:
switch (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) {
case IEEE80211_FC0_SUBTYPE_PROBE_REQ:
printf(" probe_req");
break;
case IEEE80211_FC0_SUBTYPE_PROBE_RESP:
printf(" probe_resp");
break;
case IEEE80211_FC0_SUBTYPE_BEACON:
printf(" beacon");
break;
case IEEE80211_FC0_SUBTYPE_AUTH:
printf(" auth");
break;
case IEEE80211_FC0_SUBTYPE_ASSOC_REQ:
printf(" assoc_req");
break;
case IEEE80211_FC0_SUBTYPE_ASSOC_RESP:
printf(" assoc_resp");
break;
case IEEE80211_FC0_SUBTYPE_REASSOC_REQ:
printf(" reassoc_req");
break;
case IEEE80211_FC0_SUBTYPE_REASSOC_RESP:
printf(" reassoc_resp");
break;
case IEEE80211_FC0_SUBTYPE_DEAUTH:
printf(" deauth");
break;
case IEEE80211_FC0_SUBTYPE_DISASSOC:
printf(" disassoc");
break;
default:
printf(" mgt#%d",
wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK);
break;
}
break;
default:
printf(" type#%d",
wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK);
break;
}
if (rssi >= 0)
printf(" +%d", rssi);
printf("\n");
if (awi_dump_len > 0) {
l = m->m_len;
if (l > awi_dump_len + sizeof(*wh))
l = awi_dump_len + sizeof(*wh);
i = sizeof(*wh);
if (awi_dump_hdr)
i = 0;
for (; i < l; i++) {
if ((i & 1) == 0)
printf(" ");
printf("%02x", mtod(m, u_int8_t *)[i]);
}
printf("\n");
}
}
#endif
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