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freebsd/sys/dev/an/if_an.c
Julian Elischer b40ce4165d KSE Milestone 2 
Note ALL MODULES MUST BE RECOMPILED
make the kernel aware that there are smaller units of scheduling than the
process. (but only allow one thread per process at this time).
This is functionally equivalent to teh previousl -current except
that there is a thread associated with each process.

Sorry john! (your next MFC will be a doosie!)

Reviewed by: peter@freebsd.org, dillon@freebsd.org

X-MFC after:    ha ha ha ha
2001-09-12 08:38:13 +00:00

2295 lines
54 KiB
C
Raw Blame History

/*
* Copyright (c) 1997, 1998, 1999
* Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
*
* 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 Bill Paul.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY Bill Paul 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 Bill Paul OR THE VOICES IN HIS HEAD
* 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.
*
* $FreeBSD$
*/
/*
* Aironet 4500/4800 802.11 PCMCIA/ISA/PCI driver for FreeBSD.
*
* Written by Bill Paul <wpaul@ctr.columbia.edu>
* Electrical Engineering Department
* Columbia University, New York City
*/
/*
* The Aironet 4500/4800 series cards some in PCMCIA, ISA and PCI form.
* This driver supports all three device types (PCI devices are supported
* through an extra PCI shim: /sys/pci/if_an_p.c). ISA devices can be
* supported either using hard-coded IO port/IRQ settings or via Plug
* and Play. The 4500 series devices support 1Mbps and 2Mbps data rates.
* The 4800 devices support 1, 2, 5.5 and 11Mbps rates.
*
* Like the WaveLAN/IEEE cards, the Aironet NICs are all essentially
* PCMCIA devices. The ISA and PCI cards are a combination of a PCMCIA
* device and a PCMCIA to ISA or PCMCIA to PCI adapter card. There are
* a couple of important differences though:
*
* - Lucent doesn't currently offer a PCI card, however Aironet does
* - Lucent ISA card looks to the host like a PCMCIA controller with
* a PCMCIA WaveLAN card inserted. This means that even desktop
* machines need to be configured with PCMCIA support in order to
* use WaveLAN/IEEE ISA cards. The Aironet cards on the other hand
* actually look like normal ISA and PCI devices to the host, so
* no PCMCIA controller support is needed
*
* The latter point results in a small gotcha. The Aironet PCMCIA
* cards can be configured for one of two operating modes depending
* on how the Vpp1 and Vpp2 programming voltages are set when the
* card is activated. In order to put the card in proper PCMCIA
* operation (where the CIS table is visible and the interface is
* programmed for PCMCIA operation), both Vpp1 and Vpp2 have to be
* set to 5 volts. FreeBSD by default doesn't set the Vpp voltages,
* which leaves the card in ISA/PCI mode, which prevents it from
* being activated as an PCMCIA device. Consequently, /sys/pccard/pccard.c
* has to be patched slightly in order to enable the Vpp voltages in
* order to make the Aironet PCMCIA cards work.
*
* Note that some PCMCIA controller software packages for Windows NT
* fail to set the voltages as well.
*
* The Aironet devices can operate in both station mode and access point
* mode. Typically, when programmed for station mode, the card can be set
* to automatically perform encapsulation/decapsulation of Ethernet II
* and 802.3 frames within 802.11 frames so that the host doesn't have
* to do it itself. This driver doesn't program the card that way: the
* driver handles all of the encapsulation/decapsulation itself.
*/
#include "opt_inet.h"
#ifdef INET
#define ANCACHE /* enable signal strength cache */
#endif
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/sockio.h>
#include <sys/mbuf.h>
#include <sys/proc.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#ifdef ANCACHE
#include <sys/syslog.h>
#include <sys/sysctl.h>
#endif
#include <sys/module.h>
#include <sys/sysctl.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <sys/mutex.h>
#include <machine/resource.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <net/ethernet.h>
#include <net/if_dl.h>
#include <net/if_types.h>
#include <net/if_ieee80211.h>
#include <net/if_media.h>
#ifdef INET
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/in_var.h>
#include <netinet/ip.h>
#endif
#include <net/bpf.h>
#include <machine/md_var.h>
#include <dev/an/if_aironet_ieee.h>
#include <dev/an/if_anreg.h>
#if !defined(lint)
static const char rcsid[] =
"$FreeBSD$";
#endif
/* These are global because we need them in sys/pci/if_an_p.c. */
static void an_reset __P((struct an_softc *));
static int an_ioctl __P((struct ifnet *, u_long, caddr_t));
static void an_init __P((void *));
static int an_init_tx_ring __P((struct an_softc *));
static void an_start __P((struct ifnet *));
static void an_watchdog __P((struct ifnet *));
static void an_rxeof __P((struct an_softc *));
static void an_txeof __P((struct an_softc *, int));
static void an_promisc __P((struct an_softc *, int));
static int an_cmd __P((struct an_softc *, int, int));
static int an_read_record __P((struct an_softc *, struct an_ltv_gen *));
static int an_write_record __P((struct an_softc *, struct an_ltv_gen *));
static int an_read_data __P((struct an_softc *, int,
int, caddr_t, int));
static int an_write_data __P((struct an_softc *, int,
int, caddr_t, int));
static int an_seek __P((struct an_softc *, int, int, int));
static int an_alloc_nicmem __P((struct an_softc *, int, int *));
static void an_stats_update __P((void *));
static void an_setdef __P((struct an_softc *, struct an_req *));
#ifdef ANCACHE
static void an_cache_store __P((struct an_softc *, struct ether_header *,
struct mbuf *, unsigned short));
#endif
static void an_dump_record __P((struct an_softc *,struct an_ltv_gen *,
char *));
static int an_media_change __P((struct ifnet *));
static void an_media_status __P((struct ifnet *, struct ifmediareq *));
static int an_dump = 0;
static char an_conf[256];
/* sysctl vars */
SYSCTL_NODE(_machdep, OID_AUTO, an, CTLFLAG_RD, 0, "dump RID");
static int
sysctl_an_dump(SYSCTL_HANDLER_ARGS)
{
int error, r, last;
char *s = an_conf;
last = an_dump;
bzero(an_conf, sizeof(an_conf));
switch (an_dump) {
case 0:
strcat(an_conf, "off");
break;
case 1:
strcat(an_conf, "type");
break;
case 2:
strcat(an_conf, "dump");
break;
default:
snprintf(an_conf, 5, "%x", an_dump);
break;
}
error = sysctl_handle_string(oidp, an_conf, sizeof(an_conf), req);
if (strncmp(an_conf,"off", 4) == 0) {
an_dump = 0;
}
if (strncmp(an_conf,"dump", 4) == 0) {
an_dump = 1;
}
if (strncmp(an_conf,"type", 4) == 0) {
an_dump = 2;
}
if (*s == 'f') {
r = 0;
for (;;s++) {
if ((*s >= '0') && (*s <= '9')) {
r = r * 16 + (*s - '0');
} else if ((*s >= 'a') && (*s <= 'f')) {
r = r * 16 + (*s - 'a' + 10);
} else {
break;
}
}
an_dump = r;
}
if (an_dump != last)
printf("Sysctl changed for Aironet driver\n");
return error;
}
SYSCTL_PROC(_machdep, OID_AUTO, an_dump, CTLTYPE_STRING | CTLFLAG_RW,
0, sizeof(an_conf), sysctl_an_dump, "A", "");
/*
* We probe for an Aironet 4500/4800 card by attempting to
* read the default SSID list. On reset, the first entry in
* the SSID list will contain the name "tsunami." If we don't
* find this, then there's no card present.
*/
int
an_probe(dev)
device_t dev;
{
struct an_softc *sc = device_get_softc(dev);
struct an_ltv_ssidlist ssid;
int error;
bzero((char *)&ssid, sizeof(ssid));
error = an_alloc_port(dev, 0, AN_IOSIZ);
if (error != 0)
return (0);
/* can't do autoprobing */
if (rman_get_start(sc->port_res) == -1)
return(0);
/*
* We need to fake up a softc structure long enough
* to be able to issue commands and call some of the
* other routines.
*/
sc->an_bhandle = rman_get_bushandle(sc->port_res);
sc->an_btag = rman_get_bustag(sc->port_res);
sc->an_unit = device_get_unit(dev);
ssid.an_len = sizeof(ssid);
ssid.an_type = AN_RID_SSIDLIST;
/* Make sure interrupts are disabled. */
CSR_WRITE_2(sc, AN_INT_EN, 0);
CSR_WRITE_2(sc, AN_EVENT_ACK, 0xFFFF);
an_reset(sc);
if (an_cmd(sc, AN_CMD_READCFG, 0))
return(0);
if (an_read_record(sc, (struct an_ltv_gen *)&ssid))
return(0);
/* See if the ssid matches what we expect ... but doesn't have to */
if (strcmp(ssid.an_ssid1, AN_DEF_SSID))
return(0);
return(AN_IOSIZ);
}
/*
* Allocate a port resource with the given resource id.
*/
int
an_alloc_port(dev, rid, size)
device_t dev;
int rid;
int size;
{
struct an_softc *sc = device_get_softc(dev);
struct resource *res;
res = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
0ul, ~0ul, size, RF_ACTIVE);
if (res) {
sc->port_rid = rid;
sc->port_res = res;
return (0);
} else {
return (ENOENT);
}
}
/*
* Allocate an irq resource with the given resource id.
*/
int
an_alloc_irq(dev, rid, flags)
device_t dev;
int rid;
int flags;
{
struct an_softc *sc = device_get_softc(dev);
struct resource *res;
res = bus_alloc_resource(dev, SYS_RES_IRQ, &rid,
0ul, ~0ul, 1, (RF_ACTIVE | flags));
if (res) {
sc->irq_rid = rid;
sc->irq_res = res;
return (0);
} else {
return (ENOENT);
}
}
/*
* Release all resources
*/
void
an_release_resources(dev)
device_t dev;
{
struct an_softc *sc = device_get_softc(dev);
if (sc->port_res) {
bus_release_resource(dev, SYS_RES_IOPORT,
sc->port_rid, sc->port_res);
sc->port_res = 0;
}
if (sc->irq_res) {
bus_release_resource(dev, SYS_RES_IRQ,
sc->irq_rid, sc->irq_res);
sc->irq_res = 0;
}
}
int
an_attach(sc, unit, flags)
struct an_softc *sc;
int unit;
int flags;
{
struct ifnet *ifp = &sc->arpcom.ac_if;
mtx_init(&sc->an_mtx, device_get_nameunit(sc->an_dev), MTX_DEF |
MTX_RECURSE);
AN_LOCK(sc);
sc->an_gone = 0;
sc->an_associated = 0;
sc->an_monitor = 0;
sc->an_was_monitor = 0;
/* Reset the NIC. */
an_reset(sc);
/* Load factory config */
if (an_cmd(sc, AN_CMD_READCFG, 0)) {
printf("an%d: failed to load config data\n", sc->an_unit);
AN_UNLOCK(sc);
mtx_destroy(&sc->an_mtx);
return(EIO);
}
/* Read the current configuration */
sc->an_config.an_type = AN_RID_GENCONFIG;
sc->an_config.an_len = sizeof(struct an_ltv_genconfig);
if (an_read_record(sc, (struct an_ltv_gen *)&sc->an_config)) {
printf("an%d: read record failed\n", sc->an_unit);
AN_UNLOCK(sc);
mtx_destroy(&sc->an_mtx);
return(EIO);
}
/* Read the card capabilities */
sc->an_caps.an_type = AN_RID_CAPABILITIES;
sc->an_caps.an_len = sizeof(struct an_ltv_caps);
if (an_read_record(sc, (struct an_ltv_gen *)&sc->an_caps)) {
printf("an%d: read record failed\n", sc->an_unit);
AN_UNLOCK(sc);
mtx_destroy(&sc->an_mtx);
return(EIO);
}
/* Read ssid list */
sc->an_ssidlist.an_type = AN_RID_SSIDLIST;
sc->an_ssidlist.an_len = sizeof(struct an_ltv_ssidlist);
if (an_read_record(sc, (struct an_ltv_gen *)&sc->an_ssidlist)) {
printf("an%d: read record failed\n", sc->an_unit);
AN_UNLOCK(sc);
mtx_destroy(&sc->an_mtx);
return(EIO);
}
/* Read AP list */
sc->an_aplist.an_type = AN_RID_APLIST;
sc->an_aplist.an_len = sizeof(struct an_ltv_aplist);
if (an_read_record(sc, (struct an_ltv_gen *)&sc->an_aplist)) {
printf("an%d: read record failed\n", sc->an_unit);
AN_UNLOCK(sc);
mtx_destroy(&sc->an_mtx);
return(EIO);
}
bcopy((char *)&sc->an_caps.an_oemaddr,
(char *)&sc->arpcom.ac_enaddr, ETHER_ADDR_LEN);
printf("an%d: Ethernet address: %6D\n", sc->an_unit,
sc->arpcom.ac_enaddr, ":");
ifp->if_softc = sc;
ifp->if_unit = sc->an_unit = unit;
ifp->if_name = "an";
ifp->if_mtu = ETHERMTU;
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
ifp->if_ioctl = an_ioctl;
ifp->if_output = ether_output;
ifp->if_start = an_start;
ifp->if_watchdog = an_watchdog;
ifp->if_init = an_init;
ifp->if_baudrate = 10000000;
ifp->if_snd.ifq_maxlen = IFQ_MAXLEN;
bzero(sc->an_config.an_nodename, sizeof(sc->an_config.an_nodename));
bcopy(AN_DEFAULT_NODENAME, sc->an_config.an_nodename,
sizeof(AN_DEFAULT_NODENAME) - 1);
bzero(sc->an_ssidlist.an_ssid1, sizeof(sc->an_ssidlist.an_ssid1));
bcopy(AN_DEFAULT_NETNAME, sc->an_ssidlist.an_ssid1,
sizeof(AN_DEFAULT_NETNAME) - 1);
sc->an_ssidlist.an_ssid1_len = strlen(AN_DEFAULT_NETNAME);
sc->an_config.an_opmode =
AN_OPMODE_INFRASTRUCTURE_STATION;
sc->an_tx_rate = 0;
bzero((char *)&sc->an_stats, sizeof(sc->an_stats));
ifmedia_init(&sc->an_ifmedia, 0, an_media_change, an_media_status);
#define ADD(m, c) ifmedia_add(&sc->an_ifmedia, (m), (c), NULL)
ADD(IFM_MAKEWORD(IFM_IEEE80211, IFM_IEEE80211_DS1,
IFM_IEEE80211_ADHOC, 0), 0);
ADD(IFM_MAKEWORD(IFM_IEEE80211, IFM_IEEE80211_DS1, 0, 0), 0);
ADD(IFM_MAKEWORD(IFM_IEEE80211, IFM_IEEE80211_DS2,
IFM_IEEE80211_ADHOC, 0), 0);
ADD(IFM_MAKEWORD(IFM_IEEE80211, IFM_IEEE80211_DS2, 0, 0), 0);
if (sc->an_caps.an_rates[2] == AN_RATE_5_5MBPS) {
ADD(IFM_MAKEWORD(IFM_IEEE80211, IFM_IEEE80211_DS5,
IFM_IEEE80211_ADHOC, 0), 0);
ADD(IFM_MAKEWORD(IFM_IEEE80211, IFM_IEEE80211_DS5, 0, 0), 0);
}
if (sc->an_caps.an_rates[3] == AN_RATE_11MBPS) {
ADD(IFM_MAKEWORD(IFM_IEEE80211, IFM_IEEE80211_DS11,
IFM_IEEE80211_ADHOC, 0), 0);
ADD(IFM_MAKEWORD(IFM_IEEE80211, IFM_IEEE80211_DS11, 0, 0), 0);
}
ADD(IFM_MAKEWORD(IFM_IEEE80211, IFM_AUTO,
IFM_IEEE80211_ADHOC, 0), 0);
ADD(IFM_MAKEWORD(IFM_IEEE80211, IFM_AUTO, 0, 0), 0);
#undef ADD
ifmedia_set(&sc->an_ifmedia, IFM_MAKEWORD(IFM_IEEE80211, IFM_AUTO,
0, 0));
/*
* Call MI attach routine.
*/
ether_ifattach(ifp, ETHER_BPF_SUPPORTED);
callout_handle_init(&sc->an_stat_ch);
AN_UNLOCK(sc);
return(0);
}
static void
an_rxeof(sc)
struct an_softc *sc;
{
struct ifnet *ifp;
struct ether_header *eh;
struct ieee80211_frame *ih;
struct an_rxframe rx_frame;
struct an_rxframe_802_3 rx_frame_802_3;
struct mbuf *m;
int len, id, error = 0;
int ieee80211_header_len;
u_char *bpf_buf;
u_short fc1;
ifp = &sc->arpcom.ac_if;
id = CSR_READ_2(sc, AN_RX_FID);
if (sc->an_monitor && (ifp->if_flags & IFF_PROMISC)) {
/* read raw 802.11 packet */
bpf_buf = sc->buf_802_11;
/* read header */
if (an_read_data(sc, id, 0x0, (caddr_t)&rx_frame,
sizeof(rx_frame))) {
ifp->if_ierrors++;
return;
}
/*
* skip beacon by default since this increases the
* system load a lot
*/
if (!(sc->an_monitor & AN_MONITOR_INCLUDE_BEACON) &&
(rx_frame.an_frame_ctl & IEEE80211_FC0_SUBTYPE_BEACON)) {
return;
}
if (sc->an_monitor & AN_MONITOR_AIRONET_HEADER) {
len = rx_frame.an_rx_payload_len
+ sizeof(rx_frame);
/* Check for insane frame length */
if (len > sizeof(sc->buf_802_11)) {
printf("an%d: oversized packet received (%d, %d)\n",
sc->an_unit, len, MCLBYTES);
ifp->if_ierrors++;
return;
}
bcopy((char *)&rx_frame,
bpf_buf, sizeof(rx_frame));
error = an_read_data(sc, id, sizeof(rx_frame),
(caddr_t)bpf_buf+sizeof(rx_frame),
rx_frame.an_rx_payload_len);
} else {
fc1=rx_frame.an_frame_ctl >> 8;
ieee80211_header_len = sizeof(struct ieee80211_frame);
if ((fc1 & IEEE80211_FC1_DIR_TODS) &&
(fc1 & IEEE80211_FC1_DIR_FROMDS)) {
ieee80211_header_len += ETHER_ADDR_LEN;
}
len = rx_frame.an_rx_payload_len
+ ieee80211_header_len;
/* Check for insane frame length */
if (len > sizeof(sc->buf_802_11)) {
printf("an%d: oversized packet received (%d, %d)\n",
sc->an_unit, len, MCLBYTES);
ifp->if_ierrors++;
return;
}
ih = (struct ieee80211_frame *)bpf_buf;
bcopy((char *)&rx_frame.an_frame_ctl,
(char *)ih, ieee80211_header_len);
error = an_read_data(sc, id, sizeof(rx_frame) +
rx_frame.an_gaplen,
(caddr_t)ih +ieee80211_header_len,
rx_frame.an_rx_payload_len);
}
/* dump raw 802.11 packet to bpf and skip ip stack */
if (ifp->if_bpf != NULL) {
bpf_tap(ifp, bpf_buf, len);
}
} else {
MGETHDR(m, M_DONTWAIT, MT_DATA);
if (m == NULL) {
ifp->if_ierrors++;
return;
}
MCLGET(m, M_DONTWAIT);
if (!(m->m_flags & M_EXT)) {
m_freem(m);
ifp->if_ierrors++;
return;
}
m->m_pkthdr.rcvif = ifp;
/* Read Ethenet encapsulated packet */
#ifdef ANCACHE
/* Read NIC frame header */
if (an_read_data(sc, id, 0, (caddr_t) & rx_frame, sizeof(rx_frame))) {
ifp->if_ierrors++;
return;
}
#endif
/* Read in the 802_3 frame header */
if (an_read_data(sc, id, 0x34, (caddr_t) & rx_frame_802_3,
sizeof(rx_frame_802_3))) {
ifp->if_ierrors++;
return;
}
if (rx_frame_802_3.an_rx_802_3_status != 0) {
ifp->if_ierrors++;
return;
}
/* Check for insane frame length */
if (rx_frame_802_3.an_rx_802_3_payload_len > MCLBYTES) {
ifp->if_ierrors++;
return;
}
m->m_pkthdr.len = m->m_len =
rx_frame_802_3.an_rx_802_3_payload_len + 12;
eh = mtod(m, struct ether_header *);
bcopy((char *)&rx_frame_802_3.an_rx_dst_addr,
(char *)&eh->ether_dhost, ETHER_ADDR_LEN);
bcopy((char *)&rx_frame_802_3.an_rx_src_addr,
(char *)&eh->ether_shost, ETHER_ADDR_LEN);
/* in mbuf header type is just before payload */
error = an_read_data(sc, id, 0x44, (caddr_t)&(eh->ether_type),
rx_frame_802_3.an_rx_802_3_payload_len);
if (error) {
m_freem(m);
ifp->if_ierrors++;
return;
}
ifp->if_ipackets++;
/* Receive packet. */
m_adj(m, sizeof(struct ether_header));
#ifdef ANCACHE
an_cache_store(sc, eh, m, rx_frame.an_rx_signal_strength);
#endif
ether_input(ifp, eh, m);
}
}
static void
an_txeof(sc, status)
struct an_softc *sc;
int status;
{
struct ifnet *ifp;
int id, i;
ifp = &sc->arpcom.ac_if;
ifp->if_timer = 0;
ifp->if_flags &= ~IFF_OACTIVE;
id = CSR_READ_2(sc, AN_TX_CMP_FID);
if (status & AN_EV_TX_EXC) {
ifp->if_oerrors++;
} else
ifp->if_opackets++;
for (i = 0; i < AN_TX_RING_CNT; i++) {
if (id == sc->an_rdata.an_tx_ring[i]) {
sc->an_rdata.an_tx_ring[i] = 0;
break;
}
}
AN_INC(sc->an_rdata.an_tx_cons, AN_TX_RING_CNT);
return;
}
/*
* We abuse the stats updater to check the current NIC status. This
* is important because we don't want to allow transmissions until
* the NIC has synchronized to the current cell (either as the master
* in an ad-hoc group, or as a station connected to an access point).
*/
void
an_stats_update(xsc)
void *xsc;
{
struct an_softc *sc;
struct ifnet *ifp;
sc = xsc;
AN_LOCK(sc);
ifp = &sc->arpcom.ac_if;
sc->an_status.an_type = AN_RID_STATUS;
sc->an_status.an_len = sizeof(struct an_ltv_status);
an_read_record(sc, (struct an_ltv_gen *)&sc->an_status);
if (sc->an_status.an_opmode & AN_STATUS_OPMODE_IN_SYNC)
sc->an_associated = 1;
else
sc->an_associated = 0;
/* Don't do this while we're transmitting */
if (ifp->if_flags & IFF_OACTIVE) {
sc->an_stat_ch = timeout(an_stats_update, sc, hz);
AN_UNLOCK(sc);
return;
}
sc->an_stats.an_len = sizeof(struct an_ltv_stats);
sc->an_stats.an_type = AN_RID_32BITS_CUM;
an_read_record(sc, (struct an_ltv_gen *)&sc->an_stats.an_len);
sc->an_stat_ch = timeout(an_stats_update, sc, hz);
AN_UNLOCK(sc);
return;
}
void
an_intr(xsc)
void *xsc;
{
struct an_softc *sc;
struct ifnet *ifp;
u_int16_t status;
sc = (struct an_softc*)xsc;
AN_LOCK(sc);
if (sc->an_gone) {
AN_UNLOCK(sc);
return;
}
ifp = &sc->arpcom.ac_if;
/* Disable interrupts. */
CSR_WRITE_2(sc, AN_INT_EN, 0);
status = CSR_READ_2(sc, AN_EVENT_STAT);
CSR_WRITE_2(sc, AN_EVENT_ACK, ~AN_INTRS);
if (status & AN_EV_AWAKE) {
CSR_WRITE_2(sc, AN_EVENT_ACK, AN_EV_AWAKE);
}
if (status & AN_EV_LINKSTAT) {
if (CSR_READ_2(sc, AN_LINKSTAT) == AN_LINKSTAT_ASSOCIATED)
sc->an_associated = 1;
else
sc->an_associated = 0;
CSR_WRITE_2(sc, AN_EVENT_ACK, AN_EV_LINKSTAT);
}
if (status & AN_EV_RX) {
an_rxeof(sc);
CSR_WRITE_2(sc, AN_EVENT_ACK, AN_EV_RX);
}
if (status & AN_EV_TX) {
an_txeof(sc, status);
CSR_WRITE_2(sc, AN_EVENT_ACK, AN_EV_TX);
}
if (status & AN_EV_TX_EXC) {
an_txeof(sc, status);
CSR_WRITE_2(sc, AN_EVENT_ACK, AN_EV_TX_EXC);
}
if (status & AN_EV_ALLOC)
CSR_WRITE_2(sc, AN_EVENT_ACK, AN_EV_ALLOC);
/* Re-enable interrupts. */
CSR_WRITE_2(sc, AN_INT_EN, AN_INTRS);
if ((ifp->if_flags & IFF_UP) && (ifp->if_snd.ifq_head != NULL))
an_start(ifp);
AN_UNLOCK(sc);
return;
}
static int
an_cmd(sc, cmd, val)
struct an_softc *sc;
int cmd;
int val;
{
int i, s = 0;
CSR_WRITE_2(sc, AN_PARAM0, val);
CSR_WRITE_2(sc, AN_PARAM1, 0);
CSR_WRITE_2(sc, AN_PARAM2, 0);
CSR_WRITE_2(sc, AN_COMMAND, cmd);
for (i = 0; i < AN_TIMEOUT; i++) {
if (CSR_READ_2(sc, AN_EVENT_STAT) & AN_EV_CMD)
break;
else {
if (CSR_READ_2(sc, AN_COMMAND) == cmd)
CSR_WRITE_2(sc, AN_COMMAND, cmd);
}
}
for (i = 0; i < AN_TIMEOUT; i++) {
CSR_READ_2(sc, AN_RESP0);
CSR_READ_2(sc, AN_RESP1);
CSR_READ_2(sc, AN_RESP2);
s = CSR_READ_2(sc, AN_STATUS);
if ((s & AN_STAT_CMD_CODE) == (cmd & AN_STAT_CMD_CODE))
break;
}
/* Ack the command */
CSR_WRITE_2(sc, AN_EVENT_ACK, AN_EV_CMD);
if (CSR_READ_2(sc, AN_COMMAND) & AN_CMD_BUSY)
CSR_WRITE_2(sc, AN_EVENT_ACK, AN_EV_CLR_STUCK_BUSY);
if (i == AN_TIMEOUT)
return(ETIMEDOUT);
return(0);
}
/*
* This reset sequence may look a little strange, but this is the
* most reliable method I've found to really kick the NIC in the
* head and force it to reboot correctly.
*/
static void
an_reset(sc)
struct an_softc *sc;
{
if (sc->an_gone)
return;
an_cmd(sc, AN_CMD_ENABLE, 0);
an_cmd(sc, AN_CMD_FW_RESTART, 0);
an_cmd(sc, AN_CMD_NOOP2, 0);
if (an_cmd(sc, AN_CMD_FORCE_SYNCLOSS, 0) == ETIMEDOUT)
printf("an%d: reset failed\n", sc->an_unit);
an_cmd(sc, AN_CMD_DISABLE, 0);
return;
}
/*
* Read an LTV record from the NIC.
*/
static int
an_read_record(sc, ltv)
struct an_softc *sc;
struct an_ltv_gen *ltv;
{
u_int16_t *ptr;
u_int8_t *ptr2;
int i, len;
if (ltv->an_len < 4 || ltv->an_type == 0)
return(EINVAL);
/* Tell the NIC to enter record read mode. */
if (an_cmd(sc, AN_CMD_ACCESS|AN_ACCESS_READ, ltv->an_type)) {
printf("an%d: RID access failed\n", sc->an_unit);
return(EIO);
}
/* Seek to the record. */
if (an_seek(sc, ltv->an_type, 0, AN_BAP1)) {
printf("an%d: seek to record failed\n", sc->an_unit);
return(EIO);
}
/*
* Read the length and record type and make sure they
* match what we expect (this verifies that we have enough
* room to hold all of the returned data).
* Length includes type but not length.
*/
len = CSR_READ_2(sc, AN_DATA1);
if (len > (ltv->an_len - 2)) {
printf("an%d: record length mismatch -- expected %d, "
"got %d for Rid %x\n", sc->an_unit,
ltv->an_len - 2, len, ltv->an_type);
len = ltv->an_len - 2;
} else {
ltv->an_len = len + 2;
}
/* Now read the data. */
len -= 2; /* skip the type */
ptr = &ltv->an_val;
for (i = len; i > 1; i -= 2)
*ptr++ = CSR_READ_2(sc, AN_DATA1);
if (i) {
ptr2 = (u_int8_t *)ptr;
*ptr2 = CSR_READ_1(sc, AN_DATA1);
}
if (an_dump)
an_dump_record(sc, ltv, "Read");
return(0);
}
/*
* Same as read, except we inject data instead of reading it.
*/
static int
an_write_record(sc, ltv)
struct an_softc *sc;
struct an_ltv_gen *ltv;
{
u_int16_t *ptr;
u_int8_t *ptr2;
int i, len;
if (an_dump)
an_dump_record(sc, ltv, "Write");
if (an_cmd(sc, AN_CMD_ACCESS|AN_ACCESS_READ, ltv->an_type))
return(EIO);
if (an_seek(sc, ltv->an_type, 0, AN_BAP1))
return(EIO);
/*
* Length includes type but not length.
*/
len = ltv->an_len - 2;
CSR_WRITE_2(sc, AN_DATA1, len);
len -= 2; /* skip the type */
ptr = &ltv->an_val;
for (i = len; i > 1; i -= 2)
CSR_WRITE_2(sc, AN_DATA1, *ptr++);
if (i) {
ptr2 = (u_int8_t *)ptr;
CSR_WRITE_1(sc, AN_DATA0, *ptr2);
}
if (an_cmd(sc, AN_CMD_ACCESS|AN_ACCESS_WRITE, ltv->an_type))
return(EIO);
return(0);
}
static void
an_dump_record(sc, ltv, string)
struct an_softc *sc;
struct an_ltv_gen *ltv;
char *string;
{
u_int8_t *ptr2;
int len;
int i;
int count = 0;
char buf[17], temp;
len = ltv->an_len - 4;
printf("an%d: RID %4x, Length %4d, Mode %s\n",
sc->an_unit, ltv->an_type, ltv->an_len - 4, string);
if (an_dump == 1 || (an_dump == ltv->an_type)) {
printf("an%d:\t", sc->an_unit);
bzero(buf,sizeof(buf));
ptr2 = (u_int8_t *)&ltv->an_val;
for (i = len; i > 0; i--) {
printf("%02x ", *ptr2);
temp = *ptr2++;
if (temp >= ' ' && temp <= '~')
buf[count] = temp;
else if (temp >= 'A' && temp <= 'Z')
buf[count] = temp;
else
buf[count] = '.';
if (++count == 16) {
count = 0;
printf("%s\n",buf);
printf("an%d:\t", sc->an_unit);
bzero(buf,sizeof(buf));
}
}
for (; count != 16; count++) {
printf(" ");
}
printf(" %s\n",buf);
}
}
static int
an_seek(sc, id, off, chan)
struct an_softc *sc;
int id, off, chan;
{
int i;
int selreg, offreg;
switch (chan) {
case AN_BAP0:
selreg = AN_SEL0;
offreg = AN_OFF0;
break;
case AN_BAP1:
selreg = AN_SEL1;
offreg = AN_OFF1;
break;
default:
printf("an%d: invalid data path: %x\n", sc->an_unit, chan);
return(EIO);
}
CSR_WRITE_2(sc, selreg, id);
CSR_WRITE_2(sc, offreg, off);
for (i = 0; i < AN_TIMEOUT; i++) {
if (!(CSR_READ_2(sc, offreg) & (AN_OFF_BUSY|AN_OFF_ERR)))
break;
}
if (i == AN_TIMEOUT)
return(ETIMEDOUT);
return(0);
}
static int
an_read_data(sc, id, off, buf, len)
struct an_softc *sc;
int id, off;
caddr_t buf;
int len;
{
int i;
u_int16_t *ptr;
u_int8_t *ptr2;
if (off != -1) {
if (an_seek(sc, id, off, AN_BAP1))
return(EIO);
}
ptr = (u_int16_t *)buf;
for (i = len; i > 1; i -= 2)
*ptr++ = CSR_READ_2(sc, AN_DATA1);
if (i) {
ptr2 = (u_int8_t *)ptr;
*ptr2 = CSR_READ_1(sc, AN_DATA1);
}
return(0);
}
static int
an_write_data(sc, id, off, buf, len)
struct an_softc *sc;
int id, off;
caddr_t buf;
int len;
{
int i;
u_int16_t *ptr;
u_int8_t *ptr2;
if (off != -1) {
if (an_seek(sc, id, off, AN_BAP0))
return(EIO);
}
ptr = (u_int16_t *)buf;
for (i = len; i > 1; i -= 2)
CSR_WRITE_2(sc, AN_DATA0, *ptr++);
if (i) {
ptr2 = (u_int8_t *)ptr;
CSR_WRITE_1(sc, AN_DATA0, *ptr2);
}
return(0);
}
/*
* Allocate a region of memory inside the NIC and zero
* it out.
*/
static int
an_alloc_nicmem(sc, len, id)
struct an_softc *sc;
int len;
int *id;
{
int i;
if (an_cmd(sc, AN_CMD_ALLOC_MEM, len)) {
printf("an%d: failed to allocate %d bytes on NIC\n",
sc->an_unit, len);
return(ENOMEM);
}
for (i = 0; i < AN_TIMEOUT; i++) {
if (CSR_READ_2(sc, AN_EVENT_STAT) & AN_EV_ALLOC)
break;
}
if (i == AN_TIMEOUT)
return(ETIMEDOUT);
CSR_WRITE_2(sc, AN_EVENT_ACK, AN_EV_ALLOC);
*id = CSR_READ_2(sc, AN_ALLOC_FID);
if (an_seek(sc, *id, 0, AN_BAP0))
return(EIO);
for (i = 0; i < len / 2; i++)
CSR_WRITE_2(sc, AN_DATA0, 0);
return(0);
}
static void
an_setdef(sc, areq)
struct an_softc *sc;
struct an_req *areq;
{
struct sockaddr_dl *sdl;
struct ifaddr *ifa;
struct ifnet *ifp;
struct an_ltv_genconfig *cfg;
struct an_ltv_ssidlist *ssid;
struct an_ltv_aplist *ap;
struct an_ltv_gen *sp;
ifp = &sc->arpcom.ac_if;
switch (areq->an_type) {
case AN_RID_GENCONFIG:
cfg = (struct an_ltv_genconfig *)areq;
ifa = ifaddr_byindex(ifp->if_index);
sdl = (struct sockaddr_dl *)ifa->ifa_addr;
bcopy((char *)&cfg->an_macaddr, (char *)&sc->arpcom.ac_enaddr,
ETHER_ADDR_LEN);
bcopy((char *)&cfg->an_macaddr, LLADDR(sdl), ETHER_ADDR_LEN);
bcopy((char *)cfg, (char *)&sc->an_config,
sizeof(struct an_ltv_genconfig));
break;
case AN_RID_SSIDLIST:
ssid = (struct an_ltv_ssidlist *)areq;
bcopy((char *)ssid, (char *)&sc->an_ssidlist,
sizeof(struct an_ltv_ssidlist));
break;
case AN_RID_APLIST:
ap = (struct an_ltv_aplist *)areq;
bcopy((char *)ap, (char *)&sc->an_aplist,
sizeof(struct an_ltv_aplist));
break;
case AN_RID_TX_SPEED:
sp = (struct an_ltv_gen *)areq;
sc->an_tx_rate = sp->an_val;
break;
case AN_RID_WEP_TEMP:
case AN_RID_WEP_PERM:
/* Disable the MAC. */
an_cmd(sc, AN_CMD_DISABLE, 0);
/* Write the key */
an_write_record(sc, (struct an_ltv_gen *)areq);
/* Turn the MAC back on. */
an_cmd(sc, AN_CMD_ENABLE, 0);
break;
case AN_RID_MONITOR_MODE:
cfg = (struct an_ltv_genconfig *)areq;
bpfdetach(ifp);
if (ng_ether_detach_p != NULL)
(*ng_ether_detach_p) (ifp);
sc->an_monitor = cfg->an_len;
if (sc->an_monitor & AN_MONITOR) {
if (sc->an_monitor & AN_MONITOR_AIRONET_HEADER) {
bpfattach(ifp, DLT_AIRONET_HEADER,
sizeof(struct ether_header));
} else {
bpfattach(ifp, DLT_IEEE802_11,
sizeof(struct ether_header));
}
} else {
bpfattach(ifp, DLT_EN10MB,
sizeof(struct ether_header));
if (ng_ether_attach_p != NULL)
(*ng_ether_attach_p) (ifp);
}
break;
default:
printf("an%d: unknown RID: %x\n", sc->an_unit, areq->an_type);
return;
break;
}
/* Reinitialize the card. */
if (ifp->if_flags)
an_init(sc);
return;
}
/*
* Derived from Linux driver to enable promiscious mode.
*/
static void
an_promisc(sc, promisc)
struct an_softc *sc;
int promisc;
{
if (sc->an_was_monitor)
an_reset(sc);
if (sc->an_monitor || sc->an_was_monitor)
an_init(sc);
sc->an_was_monitor = sc->an_monitor;
an_cmd(sc, AN_CMD_SET_MODE, promisc ? 0xffff : 0);
return;
}
static int
an_ioctl(ifp, command, data)
struct ifnet *ifp;
u_long command;
caddr_t data;
{
int error = 0;
int len;
int i;
struct an_softc *sc;
struct an_req areq;
struct ifreq *ifr;
struct proc *p = curproc;
struct ieee80211req *ireq;
u_int8_t tmpstr[IEEE80211_NWID_LEN*2];
u_int8_t *tmpptr;
struct an_ltv_genconfig *config;
struct an_ltv_key *key;
struct an_ltv_status *status;
struct an_ltv_ssidlist *ssids;
sc = ifp->if_softc;
AN_LOCK(sc);
ifr = (struct ifreq *)data;
ireq = (struct ieee80211req *)data;
config = (struct an_ltv_genconfig *)&areq;
key = (struct an_ltv_key *)&areq;
status = (struct an_ltv_status *)&areq;
ssids = (struct an_ltv_ssidlist *)&areq;
if (sc->an_gone) {
error = ENODEV;
goto out;
}
switch (command) {
case SIOCSIFADDR:
case SIOCGIFADDR:
case SIOCSIFMTU:
error = ether_ioctl(ifp, command, data);
break;
case SIOCSIFFLAGS:
if (ifp->if_flags & IFF_UP) {
if (ifp->if_flags & IFF_RUNNING &&
ifp->if_flags & IFF_PROMISC &&
!(sc->an_if_flags & IFF_PROMISC)) {
an_promisc(sc, 1);
} else if (ifp->if_flags & IFF_RUNNING &&
!(ifp->if_flags & IFF_PROMISC) &&
sc->an_if_flags & IFF_PROMISC) {
an_promisc(sc, 0);
} else
an_init(sc);
} else {
if (ifp->if_flags & IFF_RUNNING)
an_stop(sc);
}
sc->an_if_flags = ifp->if_flags;
error = 0;
break;
case SIOCSIFMEDIA:
case SIOCGIFMEDIA:
error = ifmedia_ioctl(ifp, ifr, &sc->an_ifmedia, command);
break;
case SIOCADDMULTI:
case SIOCDELMULTI:
/* The Aironet has no multicast filter. */
error = 0;
break;
case SIOCGAIRONET:
error = copyin(ifr->ifr_data, &areq, sizeof(areq));
if (error != 0)
break;
#ifdef ANCACHE
if (areq.an_type == AN_RID_ZERO_CACHE) {
sc->an_sigitems = sc->an_nextitem = 0;
break;
} else if (areq.an_type == AN_RID_READ_CACHE) {
char *pt = (char *)&areq.an_val;
bcopy((char *)&sc->an_sigitems, (char *)pt,
sizeof(int));
pt += sizeof(int);
areq.an_len = sizeof(int) / 2;
bcopy((char *)&sc->an_sigcache, (char *)pt,
sizeof(struct an_sigcache) * sc->an_sigitems);
areq.an_len += ((sizeof(struct an_sigcache) *
sc->an_sigitems) / 2) + 1;
} else
#endif
if (an_read_record(sc, (struct an_ltv_gen *)&areq)) {
error = EINVAL;
break;
}
error = copyout(&areq, ifr->ifr_data, sizeof(areq));
break;
case SIOCSAIRONET:
if ((error = suser(p)))
goto out;
error = copyin(ifr->ifr_data, &areq, sizeof(areq));
if (error != 0)
break;
an_setdef(sc, &areq);
break;
case SIOCG80211:
areq.an_len = sizeof(areq);
switch (ireq->i_type) {
case IEEE80211_IOC_SSID:
if (ireq->i_val == -1) {
areq.an_type = AN_RID_STATUS;
if (an_read_record(sc,
(struct an_ltv_gen *)&areq)) {
error = EINVAL;
break;
}
len = status->an_ssidlen;
tmpptr = status->an_ssid;
} else if (ireq->i_val >= 0) {
areq.an_type = AN_RID_SSIDLIST;
if (an_read_record(sc,
(struct an_ltv_gen *)&areq)) {
error = EINVAL;
break;
}
if (ireq->i_val == 0) {
len = ssids->an_ssid1_len;
tmpptr = ssids->an_ssid1;
} else if (ireq->i_val == 1) {
len = ssids->an_ssid2_len;
tmpptr = ssids->an_ssid3;
} else if (ireq->i_val == 1) {
len = ssids->an_ssid3_len;
tmpptr = ssids->an_ssid3;
} else {
error = EINVAL;
break;
}
} else {
error = EINVAL;
break;
}
if (len > IEEE80211_NWID_LEN) {
error = EINVAL;
break;
}
ireq->i_len = len;
bzero(tmpstr, IEEE80211_NWID_LEN);
bcopy(tmpptr, tmpstr, len);
error = copyout(tmpstr, ireq->i_data,
IEEE80211_NWID_LEN);
break;
case IEEE80211_IOC_NUMSSIDS:
ireq->i_val = 3;
break;
case IEEE80211_IOC_WEP:
areq.an_type = AN_RID_ACTUALCFG;
if (an_read_record(sc,
(struct an_ltv_gen *)&areq)) {
error = EINVAL;
break;
}
if (config->an_authtype & AN_AUTHTYPE_PRIVACY_IN_USE) {
if (config->an_authtype &
AN_AUTHTYPE_ALLOW_UNENCRYPTED)
ireq->i_val = IEEE80211_WEP_MIXED;
else
ireq->i_val = IEEE80211_WEP_ON;
} else {
ireq->i_val = IEEE80211_WEP_OFF;
}
break;
case IEEE80211_IOC_WEPKEY:
/*
* XXX: I'm not entierly convinced this is
* correct, but it's what is implemented in
* ancontrol so it will have to do until we get
* access to actual Cisco code.
*/
if (ireq->i_val < 0 || ireq->i_val > 7) {
error = EINVAL;
break;
}
len = 0;
if (ireq->i_val < 4) {
areq.an_type = AN_RID_WEP_TEMP;
for (i = 0; i < 5; i++) {
if (an_read_record(sc,
(struct an_ltv_gen *)&areq)) {
error = EINVAL;
break;
}
if (key->kindex == 0xffff)
break;
if (key->kindex == ireq->i_val)
len = key->klen;
/* Required to get next entry */
areq.an_type = AN_RID_WEP_PERM;
}
if (error != 0)
break;
}
/* We aren't allowed to read the value of the
* key from the card so we just output zeros
* like we would if we could read the card, but
* denied the user access.
*/
bzero(tmpstr, len);
ireq->i_len = len;
error = copyout(tmpstr, ireq->i_data, len);
break;
case IEEE80211_IOC_NUMWEPKEYS:
ireq->i_val = 8;
break;
case IEEE80211_IOC_WEPTXKEY:
/*
* For some strange reason, you have to read all
* keys before you can read the txkey.
*/
areq.an_type = AN_RID_WEP_TEMP;
for (i = 0; i < 5; i++) {
if (an_read_record(sc,
(struct an_ltv_gen *)&areq)) {
error = EINVAL;
break;
}
if (key->kindex == 0xffff)
break;
/* Required to get next entry */
areq.an_type = AN_RID_WEP_PERM;
}
if (error != 0)
break;
areq.an_type = AN_RID_WEP_PERM;
key->kindex = 0xffff;
if (an_read_record(sc,
(struct an_ltv_gen *)&areq)) {
error = EINVAL;
break;
}
ireq->i_val = key->mac[0];
break;
case IEEE80211_IOC_AUTHMODE:
areq.an_type = AN_RID_ACTUALCFG;
if (an_read_record(sc,
(struct an_ltv_gen *)&areq)) {
error = EINVAL;
break;
}
if ((config->an_authtype & AN_AUTHTYPE_MASK) ==
AN_AUTHTYPE_NONE) {
ireq->i_val = IEEE80211_AUTH_NONE;
} else if ((config->an_authtype & AN_AUTHTYPE_MASK) ==
AN_AUTHTYPE_OPEN) {
ireq->i_val = IEEE80211_AUTH_OPEN;
} else if ((config->an_authtype & AN_AUTHTYPE_MASK) ==
AN_AUTHTYPE_SHAREDKEY) {
ireq->i_val = IEEE80211_AUTH_SHARED;
} else
error = EINVAL;
break;
case IEEE80211_IOC_STATIONNAME:
areq.an_type = AN_RID_ACTUALCFG;
if (an_read_record(sc,
(struct an_ltv_gen *)&areq)) {
error = EINVAL;
break;
}
ireq->i_len = sizeof(config->an_nodename);
tmpptr = config->an_nodename;
bzero(tmpstr, IEEE80211_NWID_LEN);
bcopy(tmpptr, tmpstr, ireq->i_len);
error = copyout(tmpstr, ireq->i_data,
IEEE80211_NWID_LEN);
break;
case IEEE80211_IOC_CHANNEL:
areq.an_type = AN_RID_STATUS;
if (an_read_record(sc,
(struct an_ltv_gen *)&areq)) {
error = EINVAL;
break;
}
ireq->i_val = status->an_cur_channel;
break;
case IEEE80211_IOC_POWERSAVE:
areq.an_type = AN_RID_ACTUALCFG;
if (an_read_record(sc,
(struct an_ltv_gen *)&areq)) {
error = EINVAL;
break;
}
if (config->an_psave_mode == AN_PSAVE_NONE) {
ireq->i_val = IEEE80211_POWERSAVE_OFF;
} else if (config->an_psave_mode == AN_PSAVE_CAM) {
ireq->i_val = IEEE80211_POWERSAVE_CAM;
} else if (config->an_psave_mode == AN_PSAVE_PSP) {
ireq->i_val = IEEE80211_POWERSAVE_PSP;
} else if (config->an_psave_mode == AN_PSAVE_PSP_CAM) {
ireq->i_val = IEEE80211_POWERSAVE_PSP_CAM;
} else
error = EINVAL;
break;
case IEEE80211_IOC_POWERSAVESLEEP:
areq.an_type = AN_RID_ACTUALCFG;
if (an_read_record(sc,
(struct an_ltv_gen *)&areq)) {
error = EINVAL;
break;
}
ireq->i_val = config->an_listen_interval;
break;
}
break;
case SIOCS80211:
if ((error = suser(p)))
goto out;
areq.an_len = sizeof(areq);
/*
* We need a config structure for everything but the WEP
* key management and SSIDs so we get it now so avoid
* duplicating this code every time.
*/
if (ireq->i_type != IEEE80211_IOC_SSID &&
ireq->i_type != IEEE80211_IOC_WEPKEY &&
ireq->i_type != IEEE80211_IOC_WEPTXKEY) {
areq.an_type = AN_RID_GENCONFIG;
if (an_read_record(sc,
(struct an_ltv_gen *)&areq)) {
error = EINVAL;
break;
}
}
switch (ireq->i_type) {
case IEEE80211_IOC_SSID:
areq.an_type = AN_RID_SSIDLIST;
if (an_read_record(sc,
(struct an_ltv_gen *)&areq)) {
error = EINVAL;
break;
}
if (ireq->i_len > IEEE80211_NWID_LEN) {
error = EINVAL;
break;
}
switch (ireq->i_val) {
case 0:
error = copyin(ireq->i_data,
ssids->an_ssid1, ireq->i_len);
ssids->an_ssid1_len = ireq->i_len;
break;
case 1:
error = copyin(ireq->i_data,
ssids->an_ssid2, ireq->i_len);
ssids->an_ssid2_len = ireq->i_len;
break;
case 2:
error = copyin(ireq->i_data,
ssids->an_ssid3, ireq->i_len);
ssids->an_ssid3_len = ireq->i_len;
break;
default:
error = EINVAL;
break;
}
break;
case IEEE80211_IOC_WEP:
switch (ireq->i_val) {
case IEEE80211_WEP_OFF:
config->an_authtype &=
~(AN_AUTHTYPE_PRIVACY_IN_USE |
AN_AUTHTYPE_ALLOW_UNENCRYPTED);
break;
case IEEE80211_WEP_ON:
config->an_authtype |=
AN_AUTHTYPE_PRIVACY_IN_USE;
config->an_authtype &=
~AN_AUTHTYPE_ALLOW_UNENCRYPTED;
break;
case IEEE80211_WEP_MIXED:
config->an_authtype |=
AN_AUTHTYPE_PRIVACY_IN_USE |
AN_AUTHTYPE_ALLOW_UNENCRYPTED;
break;
default:
error = EINVAL;
break;
}
break;
case IEEE80211_IOC_WEPKEY:
if (ireq->i_val < 0 || ireq->i_val > 7 ||
ireq->i_len > 13) {
error = EINVAL;
break;
}
error = copyin(ireq->i_data, tmpstr, 13);
if (error != 0)
break;
bzero(&areq, sizeof(struct an_ltv_key));
areq.an_len = sizeof(struct an_ltv_key);
key->mac[0] = 1; /* The others are 0. */
key->kindex = ireq->i_val % 4;
if (ireq->i_val < 4)
areq.an_type = AN_RID_WEP_TEMP;
else
areq.an_type = AN_RID_WEP_PERM;
key->klen = ireq->i_len;
bcopy(tmpstr, key->key, key->klen);
break;
case IEEE80211_IOC_WEPTXKEY:
if (ireq->i_val < 0 || ireq->i_val > 3) {
error = EINVAL;
break;
}
bzero(&areq, sizeof(struct an_ltv_key));
areq.an_len = sizeof(struct an_ltv_key);
areq.an_type = AN_RID_WEP_PERM;
key->kindex = 0xffff;
key->mac[0] = ireq->i_val;
break;
case IEEE80211_IOC_AUTHMODE:
switch (ireq->i_val) {
case IEEE80211_AUTH_NONE:
config->an_authtype = AN_AUTHTYPE_NONE |
(config->an_authtype & ~AN_AUTHTYPE_MASK);
break;
case IEEE80211_AUTH_OPEN:
config->an_authtype = AN_AUTHTYPE_OPEN |
(config->an_authtype & ~AN_AUTHTYPE_MASK);
break;
case IEEE80211_AUTH_SHARED:
config->an_authtype = AN_AUTHTYPE_SHAREDKEY |
(config->an_authtype & ~AN_AUTHTYPE_MASK);
break;
default:
error = EINVAL;
}
break;
case IEEE80211_IOC_STATIONNAME:
if (ireq->i_len > 16) {
error = EINVAL;
break;
}
bzero(config->an_nodename, 16);
error = copyin(ireq->i_data,
config->an_nodename, ireq->i_len);
break;
case IEEE80211_IOC_CHANNEL:
/*
* The actual range is 1-14, but if you set it
* to 0 you get the default so we let that work
* too.
*/
if (ireq->i_val < 0 || ireq->i_val >14) {
error = EINVAL;
break;
}
config->an_ds_channel = ireq->i_val;
break;
case IEEE80211_IOC_POWERSAVE:
switch (ireq->i_val) {
case IEEE80211_POWERSAVE_OFF:
config->an_psave_mode = AN_PSAVE_NONE;
break;
case IEEE80211_POWERSAVE_CAM:
config->an_psave_mode = AN_PSAVE_CAM;
break;
case IEEE80211_POWERSAVE_PSP:
config->an_psave_mode = AN_PSAVE_PSP;
break;
case IEEE80211_POWERSAVE_PSP_CAM:
config->an_psave_mode = AN_PSAVE_PSP_CAM;
break;
default:
error = EINVAL;
break;
}
break;
case IEEE80211_IOC_POWERSAVESLEEP:
config->an_listen_interval = ireq->i_val;
break;
}
if (!error)
an_setdef(sc, &areq);
break;
default:
error = EINVAL;
break;
}
out:
AN_UNLOCK(sc);
return(error != 0);
}
static int
an_init_tx_ring(sc)
struct an_softc *sc;
{
int i;
int id;
if (sc->an_gone)
return (0);
for (i = 0; i < AN_TX_RING_CNT; i++) {
if (an_alloc_nicmem(sc, 1518 +
0x44, &id))
return(ENOMEM);
sc->an_rdata.an_tx_fids[i] = id;
sc->an_rdata.an_tx_ring[i] = 0;
}
sc->an_rdata.an_tx_prod = 0;
sc->an_rdata.an_tx_cons = 0;
return(0);
}
static void
an_init(xsc)
void *xsc;
{
struct an_softc *sc = xsc;
struct ifnet *ifp = &sc->arpcom.ac_if;
AN_LOCK(sc);
if (sc->an_gone) {
AN_UNLOCK(sc);
return;
}
if (ifp->if_flags & IFF_RUNNING)
an_stop(sc);
sc->an_associated = 0;
/* Allocate the TX buffers */
if (an_init_tx_ring(sc)) {
an_reset(sc);
if (an_init_tx_ring(sc)) {
printf("an%d: tx buffer allocation "
"failed\n", sc->an_unit);
AN_UNLOCK(sc);
return;
}
}
/* Set our MAC address. */
bcopy((char *)&sc->arpcom.ac_enaddr,
(char *)&sc->an_config.an_macaddr, ETHER_ADDR_LEN);
if (ifp->if_flags & IFF_BROADCAST)
sc->an_config.an_rxmode = AN_RXMODE_BC_ADDR;
else
sc->an_config.an_rxmode = AN_RXMODE_ADDR;
if (ifp->if_flags & IFF_MULTICAST)
sc->an_config.an_rxmode = AN_RXMODE_BC_MC_ADDR;
if (ifp->if_flags & IFF_PROMISC) {
if (sc->an_monitor & AN_MONITOR) {
if (sc->an_monitor & AN_MONITOR_ANY_BSS) {
sc->an_config.an_rxmode |=
AN_RXMODE_80211_MONITOR_ANYBSS |
AN_RXMODE_NO_8023_HEADER;
} else {
sc->an_config.an_rxmode |=
AN_RXMODE_80211_MONITOR_CURBSS |
AN_RXMODE_NO_8023_HEADER;
}
}
}
/* Set the ssid list */
sc->an_ssidlist.an_type = AN_RID_SSIDLIST;
sc->an_ssidlist.an_len = sizeof(struct an_ltv_ssidlist);
if (an_write_record(sc, (struct an_ltv_gen *)&sc->an_ssidlist)) {
printf("an%d: failed to set ssid list\n", sc->an_unit);
AN_UNLOCK(sc);
return;
}
/* Set the AP list */
sc->an_aplist.an_type = AN_RID_APLIST;
sc->an_aplist.an_len = sizeof(struct an_ltv_aplist);
if (an_write_record(sc, (struct an_ltv_gen *)&sc->an_aplist)) {
printf("an%d: failed to set AP list\n", sc->an_unit);
AN_UNLOCK(sc);
return;
}
/* Set the configuration in the NIC */
sc->an_config.an_len = sizeof(struct an_ltv_genconfig);
sc->an_config.an_type = AN_RID_GENCONFIG;
if (an_write_record(sc, (struct an_ltv_gen *)&sc->an_config)) {
printf("an%d: failed to set configuration\n", sc->an_unit);
AN_UNLOCK(sc);
return;
}
/* Enable the MAC */
if (an_cmd(sc, AN_CMD_ENABLE, 0)) {
printf("an%d: failed to enable MAC\n", sc->an_unit);
AN_UNLOCK(sc);
return;
}
if (ifp->if_flags & IFF_PROMISC)
an_cmd(sc, AN_CMD_SET_MODE, 0xffff);
/* enable interrupts */
CSR_WRITE_2(sc, AN_INT_EN, AN_INTRS);
ifp->if_flags |= IFF_RUNNING;
ifp->if_flags &= ~IFF_OACTIVE;
sc->an_stat_ch = timeout(an_stats_update, sc, hz);
AN_UNLOCK(sc);
return;
}
static void
an_start(ifp)
struct ifnet *ifp;
{
struct an_softc *sc;
struct mbuf *m0 = NULL;
struct an_txframe_802_3 tx_frame_802_3;
struct ether_header *eh;
int id;
int idx;
unsigned char txcontrol;
sc = ifp->if_softc;
if (sc->an_gone)
return;
if (ifp->if_flags & IFF_OACTIVE)
return;
if (!sc->an_associated)
return;
if (sc->an_monitor && (ifp->if_flags & IFF_PROMISC)) {
for (;;) {
IF_DEQUEUE(&ifp->if_snd, m0);
if (m0 == NULL)
break;
}
return;
}
idx = sc->an_rdata.an_tx_prod;
bzero((char *)&tx_frame_802_3, sizeof(tx_frame_802_3));
while (sc->an_rdata.an_tx_ring[idx] == 0) {
IF_DEQUEUE(&ifp->if_snd, m0);
if (m0 == NULL)
break;
id = sc->an_rdata.an_tx_fids[idx];
eh = mtod(m0, struct ether_header *);
bcopy((char *)&eh->ether_dhost,
(char *)&tx_frame_802_3.an_tx_dst_addr, ETHER_ADDR_LEN);
bcopy((char *)&eh->ether_shost,
(char *)&tx_frame_802_3.an_tx_src_addr, ETHER_ADDR_LEN);
tx_frame_802_3.an_tx_802_3_payload_len =
m0->m_pkthdr.len - 12; /* minus src/dest mac & type */
m_copydata(m0, sizeof(struct ether_header) - 2 ,
tx_frame_802_3.an_tx_802_3_payload_len,
(caddr_t)&sc->an_txbuf);
txcontrol = AN_TXCTL_8023;
/* write the txcontrol only */
an_write_data(sc, id, 0x08, (caddr_t)&txcontrol,
sizeof(txcontrol));
/* 802_3 header */
an_write_data(sc, id, 0x34, (caddr_t)&tx_frame_802_3,
sizeof(struct an_txframe_802_3));
/* in mbuf header type is just before payload */
an_write_data(sc, id, 0x44, (caddr_t)&sc->an_txbuf,
tx_frame_802_3.an_tx_802_3_payload_len);
/*
* If there's a BPF listner, bounce a copy of
* this frame to him.
*/
if (ifp->if_bpf)
bpf_mtap(ifp, m0);
m_freem(m0);
m0 = NULL;
sc->an_rdata.an_tx_ring[idx] = id;
if (an_cmd(sc, AN_CMD_TX, id))
printf("an%d: xmit failed\n", sc->an_unit);
AN_INC(idx, AN_TX_RING_CNT);
}
if (m0 != NULL)
ifp->if_flags |= IFF_OACTIVE;
sc->an_rdata.an_tx_prod = idx;
/*
* Set a timeout in case the chip goes out to lunch.
*/
ifp->if_timer = 5;
return;
}
void
an_stop(sc)
struct an_softc *sc;
{
struct ifnet *ifp;
int i;
AN_LOCK(sc);
if (sc->an_gone) {
AN_UNLOCK(sc);
return;
}
ifp = &sc->arpcom.ac_if;
an_cmd(sc, AN_CMD_FORCE_SYNCLOSS, 0);
CSR_WRITE_2(sc, AN_INT_EN, 0);
an_cmd(sc, AN_CMD_DISABLE, 0);
for (i = 0; i < AN_TX_RING_CNT; i++)
an_cmd(sc, AN_CMD_DEALLOC_MEM, sc->an_rdata.an_tx_fids[i]);
untimeout(an_stats_update, sc, sc->an_stat_ch);
ifp->if_flags &= ~(IFF_RUNNING|IFF_OACTIVE);
AN_UNLOCK(sc);
return;
}
static void
an_watchdog(ifp)
struct ifnet *ifp;
{
struct an_softc *sc;
sc = ifp->if_softc;
AN_LOCK(sc);
if (sc->an_gone) {
AN_UNLOCK(sc);
return;
}
printf("an%d: device timeout\n", sc->an_unit);
an_reset(sc);
an_init(sc);
ifp->if_oerrors++;
AN_UNLOCK(sc);
return;
}
void
an_shutdown(dev)
device_t dev;
{
struct an_softc *sc;
sc = device_get_softc(dev);
an_stop(sc);
return;
}
#ifdef ANCACHE
/* Aironet signal strength cache code.
* store signal/noise/quality on per MAC src basis in
* a small fixed cache. The cache wraps if > MAX slots
* used. The cache may be zeroed out to start over.
* Two simple filters exist to reduce computation:
* 1. ip only (literally 0x800) which may be used
* to ignore some packets. It defaults to ip only.
* it could be used to focus on broadcast, non-IP 802.11 beacons.
* 2. multicast/broadcast only. This may be used to
* ignore unicast packets and only cache signal strength
* for multicast/broadcast packets (beacons); e.g., Mobile-IP
* beacons and not unicast traffic.
*
* The cache stores (MAC src(index), IP src (major clue), signal,
* quality, noise)
*
* No apologies for storing IP src here. It's easy and saves much
* trouble elsewhere. The cache is assumed to be INET dependent,
* although it need not be.
*
* Note: the Aironet only has a single byte of signal strength value
* in the rx frame header, and it's not scaled to anything sensible.
* This is kind of lame, but it's all we've got.
*/
#ifdef documentation
int an_sigitems; /* number of cached entries */
struct an_sigcache an_sigcache[MAXANCACHE]; /* array of cache entries */
int an_nextitem; /* index/# of entries */
#endif
/* control variables for cache filtering. Basic idea is
* to reduce cost (e.g., to only Mobile-IP agent beacons
* which are broadcast or multicast). Still you might
* want to measure signal strength anth unicast ping packets
* on a pt. to pt. ant. setup.
*/
/* set true if you want to limit cache items to broadcast/mcast
* only packets (not unicast). Useful for mobile-ip beacons which
* are broadcast/multicast at network layer. Default is all packets
* so ping/unicast anll work say anth pt. to pt. antennae setup.
*/
static int an_cache_mcastonly = 0;
SYSCTL_INT(_machdep, OID_AUTO, an_cache_mcastonly, CTLFLAG_RW,
&an_cache_mcastonly, 0, "");
/* set true if you want to limit cache items to IP packets only
*/
static int an_cache_iponly = 1;
SYSCTL_INT(_machdep, OID_AUTO, an_cache_iponly, CTLFLAG_RW,
&an_cache_iponly, 0, "");
/*
* an_cache_store, per rx packet store signal
* strength in MAC (src) indexed cache.
*/
static void
an_cache_store (sc, eh, m, rx_quality)
struct an_softc *sc;
struct ether_header *eh;
struct mbuf *m;
unsigned short rx_quality;
{
struct ip *ip = 0;
int i;
static int cache_slot = 0; /* use this cache entry */
static int wrapindex = 0; /* next "free" cache entry */
int saanp = 0;
/* filters:
* 1. ip only
* 2. configurable filter to throw out unicast packets,
* keep multicast only.
*/
if ((ntohs(eh->ether_type) == 0x800)) {
saanp = 1;
}
/* filter for ip packets only
*/
if ( an_cache_iponly && !saanp) {
return;
}
/* filter for broadcast/multicast only
*/
if (an_cache_mcastonly && ((eh->ether_dhost[0] & 1) == 0)) {
return;
}
#ifdef SIGDEBUG
printf("an: q value %x (MSB=0x%x, LSB=0x%x) \n",
rx_quality & 0xffff, rx_quality >> 8, rx_quality & 0xff);
#endif
/* find the ip header. we want to store the ip_src
* address.
*/
if (saanp) {
ip = mtod(m, struct ip *);
}
/* do a linear search for a matching MAC address
* in the cache table
* . MAC address is 6 bytes,
* . var w_nextitem holds total number of entries already cached
*/
for (i = 0; i < sc->an_nextitem; i++) {
if (! bcmp(eh->ether_shost , sc->an_sigcache[i].macsrc, 6 )) {
/* Match!,
* so we already have this entry,
* update the data
*/
break;
}
}
/* did we find a matching mac address?
* if yes, then overwrite a previously existing cache entry
*/
if (i < sc->an_nextitem ) {
cache_slot = i;
}
/* else, have a new address entry,so
* add this new entry,
* if table full, then we need to replace LRU entry
*/
else {
/* check for space in cache table
* note: an_nextitem also holds number of entries
* added in the cache table
*/
if ( sc->an_nextitem < MAXANCACHE ) {
cache_slot = sc->an_nextitem;
sc->an_nextitem++;
sc->an_sigitems = sc->an_nextitem;
}
/* no space found, so simply wrap anth wrap index
* and "zap" the next entry
*/
else {
if (wrapindex == MAXANCACHE) {
wrapindex = 0;
}
cache_slot = wrapindex++;
}
}
/* invariant: cache_slot now points at some slot
* in cache.
*/
if (cache_slot < 0 || cache_slot >= MAXANCACHE) {
log(LOG_ERR, "an_cache_store, bad index: %d of "
"[0..%d], gross cache error\n",
cache_slot, MAXANCACHE);
return;
}
/* store items in cache
* .ip source address
* .mac src
* .signal, etc.
*/
if (saanp) {
sc->an_sigcache[cache_slot].ipsrc = ip->ip_src.s_addr;
}
bcopy( eh->ether_shost, sc->an_sigcache[cache_slot].macsrc, 6);
sc->an_sigcache[cache_slot].signal = rx_quality;
return;
}
#endif
static int
an_media_change(ifp)
struct ifnet *ifp;
{
struct an_softc *sc = ifp->if_softc;
int otype = sc->an_config.an_opmode;
int orate = sc->an_tx_rate;
if ((sc->an_ifmedia.ifm_cur->ifm_media & IFM_IEEE80211_ADHOC) != 0)
sc->an_config.an_opmode = AN_OPMODE_IBSS_ADHOC;
else
sc->an_config.an_opmode = AN_OPMODE_INFRASTRUCTURE_STATION;
switch (IFM_SUBTYPE(sc->an_ifmedia.ifm_cur->ifm_media)) {
case IFM_IEEE80211_DS1:
sc->an_tx_rate = AN_RATE_1MBPS;
break;
case IFM_IEEE80211_DS2:
sc->an_tx_rate = AN_RATE_2MBPS;
break;
case IFM_IEEE80211_DS5:
sc->an_tx_rate = AN_RATE_5_5MBPS;
break;
case IFM_IEEE80211_DS11:
sc->an_tx_rate = AN_RATE_11MBPS;
break;
case IFM_AUTO:
sc->an_tx_rate = 0;
break;
}
if (otype != sc->an_config.an_opmode ||
orate != sc->an_tx_rate)
an_init(sc);
return(0);
}
static void
an_media_status(ifp, imr)
struct ifnet *ifp;
struct ifmediareq *imr;
{
struct an_ltv_status status;
struct an_softc *sc = ifp->if_softc;
status.an_len = sizeof(status);
status.an_type = AN_RID_STATUS;
if (an_read_record(sc, (struct an_ltv_gen *)&status)) {
/* If the status read fails, just lie. */
imr->ifm_active = sc->an_ifmedia.ifm_cur->ifm_media;
imr->ifm_status = IFM_AVALID|IFM_ACTIVE;
}
if (sc->an_tx_rate == 0) {
imr->ifm_active = IFM_IEEE80211|IFM_AUTO;
if (sc->an_config.an_opmode == AN_OPMODE_IBSS_ADHOC)
imr->ifm_active |= IFM_IEEE80211_ADHOC;
switch (status.an_current_tx_rate) {
case AN_RATE_1MBPS:
imr->ifm_active |= IFM_IEEE80211_DS1;
break;
case AN_RATE_2MBPS:
imr->ifm_active |= IFM_IEEE80211_DS2;
break;
case AN_RATE_5_5MBPS:
imr->ifm_active |= IFM_IEEE80211_DS5;
break;
case AN_RATE_11MBPS:
imr->ifm_active |= IFM_IEEE80211_DS11;
break;
}
} else {
imr->ifm_active = sc->an_ifmedia.ifm_cur->ifm_media;
}
imr->ifm_status = IFM_AVALID;
if (sc->an_config.an_opmode == AN_OPMODE_IBSS_ADHOC)
imr->ifm_status |= IFM_ACTIVE;
else if (status.an_opmode & AN_STATUS_OPMODE_ASSOCIATED)
imr->ifm_status |= IFM_ACTIVE;
}
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