mirror of
https://git.FreeBSD.org/src.git
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35e0e5b311
- machine/ipl.h -> sys/ipl.h - machine/mutex.h -> sys/mutex.h
1524 lines
36 KiB
C
1524 lines
36 KiB
C
/*
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* Copyright (c) 1997, 1998, 1999
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* Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Bill Paul.
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* 4. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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* Aironet 4500/4800 802.11 PCMCIA/ISA/PCI driver for FreeBSD.
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*
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* Written by Bill Paul <wpaul@ctr.columbia.edu>
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* Electrical Engineering Department
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* Columbia University, New York City
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*/
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/*
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* The Aironet 4500/4800 series cards some in PCMCIA, ISA and PCI form.
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* This driver supports all three device types (PCI devices are supported
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* through an extra PCI shim: /sys/pci/if_an_p.c). ISA devices can be
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* supported either using hard-coded IO port/IRQ settings or via Plug
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* and Play. The 4500 series devices support 1Mbps and 2Mbps data rates.
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* The 4800 devices support 1, 2, 5.5 and 11Mbps rates.
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*
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* Like the WaveLAN/IEEE cards, the Aironet NICs are all essentially
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* PCMCIA devices. The ISA and PCI cards are a combination of a PCMCIA
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* device and a PCMCIA to ISA or PCMCIA to PCI adapter card. There are
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* a couple of important differences though:
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*
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* - Lucent doesn't currently offer a PCI card, however Aironet does
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* - Lucent ISA card looks to the host like a PCMCIA controller with
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* a PCMCIA WaveLAN card inserted. This means that even desktop
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* machines need to be configured with PCMCIA support in order to
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* use WaveLAN/IEEE ISA cards. The Aironet cards on the other hand
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* actually look like normal ISA and PCI devices to the host, so
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* no PCMCIA controller support is needed
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*
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* The latter point results in a small gotcha. The Aironet PCMCIA
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* cards can be configured for one of two operating modes depending
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* on how the Vpp1 and Vpp2 programming voltages are set when the
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* card is activated. In order to put the card in proper PCMCIA
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* operation (where the CIS table is visible and the interface is
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* programmed for PCMCIA operation), both Vpp1 and Vpp2 have to be
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* set to 5 volts. FreeBSD by default doesn't set the Vpp voltages,
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* which leaves the card in ISA/PCI mode, which prevents it from
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* being activated as an PCMCIA device. Consequently, /sys/pccard/pccard.c
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* has to be patched slightly in order to enable the Vpp voltages in
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* order to make the Aironet PCMCIA cards work.
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*
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* Note that some PCMCIA controller software packages for Windows NT
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* fail to set the voltages as well.
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*
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* The Aironet devices can operate in both station mode and access point
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* mode. Typically, when programmed for station mode, the card can be set
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* to automatically perform encapsulation/decapsulation of Ethernet II
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* and 802.3 frames within 802.11 frames so that the host doesn't have
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* to do it itself. This driver doesn't program the card that way: the
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* driver handles all of the encapsulation/decapsulation itself.
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*/
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#include "opt_inet.h"
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#ifdef INET
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#define ANCACHE /* enable signal strength cache */
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#endif
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/sockio.h>
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#include <sys/mbuf.h>
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#include <sys/kernel.h>
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#include <sys/proc.h>
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#include <sys/ucred.h>
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#include <sys/socket.h>
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#ifdef ANCACHE
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#include <sys/syslog.h>
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#include <sys/sysctl.h>
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#endif
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <sys/mutex.h>
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#include <machine/resource.h>
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#include <net/if.h>
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#include <net/if_arp.h>
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#include <net/ethernet.h>
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#include <net/if_dl.h>
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#include <net/if_types.h>
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#ifdef INET
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/in_var.h>
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#include <netinet/ip.h>
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#endif
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#include <net/bpf.h>
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#include <machine/md_var.h>
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#include <dev/an/if_aironet_ieee.h>
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#include <dev/an/if_anreg.h>
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#if !defined(lint)
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static const char rcsid[] =
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"$FreeBSD$";
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#endif
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/* These are global because we need them in sys/pci/if_an_p.c. */
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static void an_reset __P((struct an_softc *));
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static int an_ioctl __P((struct ifnet *, u_long, caddr_t));
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static void an_init __P((void *));
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static int an_init_tx_ring __P((struct an_softc *));
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static void an_start __P((struct ifnet *));
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static void an_watchdog __P((struct ifnet *));
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static void an_rxeof __P((struct an_softc *));
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static void an_txeof __P((struct an_softc *, int));
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static void an_promisc __P((struct an_softc *, int));
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static int an_cmd __P((struct an_softc *, int, int));
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static int an_read_record __P((struct an_softc *, struct an_ltv_gen *));
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static int an_write_record __P((struct an_softc *, struct an_ltv_gen *));
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static int an_read_data __P((struct an_softc *, int,
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int, caddr_t, int));
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static int an_write_data __P((struct an_softc *, int,
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int, caddr_t, int));
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static int an_seek __P((struct an_softc *, int, int, int));
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static int an_alloc_nicmem __P((struct an_softc *, int, int *));
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static void an_stats_update __P((void *));
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static void an_setdef __P((struct an_softc *, struct an_req *));
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#ifdef ANCACHE
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static void an_cache_store __P((struct an_softc *, struct ether_header *,
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struct mbuf *, unsigned short));
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#endif
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/*
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* We probe for an Aironet 4500/4800 card by attempting to
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* read the default SSID list. On reset, the first entry in
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* the SSID list will contain the name "tsunami." If we don't
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* find this, then there's no card present.
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*/
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int an_probe(dev)
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device_t dev;
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{
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struct an_softc *sc = device_get_softc(dev);
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struct an_ltv_ssidlist ssid;
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int error;
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bzero((char *)&ssid, sizeof(ssid));
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error = an_alloc_port(dev, 0, AN_IOSIZ);
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if (error)
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return (0);
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/* can't do autoprobing */
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if (rman_get_start(sc->port_res) == -1)
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return(0);
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/*
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* We need to fake up a softc structure long enough
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* to be able to issue commands and call some of the
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* other routines.
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*/
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sc->an_bhandle = rman_get_bushandle(sc->port_res);
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sc->an_btag = rman_get_bustag(sc->port_res);
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sc->an_unit = device_get_unit(dev);
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ssid.an_len = sizeof(ssid);
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ssid.an_type = AN_RID_SSIDLIST;
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/* Make sure interrupts are disabled. */
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CSR_WRITE_2(sc, AN_INT_EN, 0);
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CSR_WRITE_2(sc, AN_EVENT_ACK, 0xFFFF);
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an_reset(sc);
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if (an_cmd(sc, AN_CMD_READCFG, 0))
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return(0);
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if (an_read_record(sc, (struct an_ltv_gen *)&ssid))
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return(0);
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/* See if the ssid matches what we expect. */
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if (strcmp(ssid.an_ssid1, AN_DEF_SSID))
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return(0);
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return(AN_IOSIZ);
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}
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/*
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* Allocate a port resource with the given resource id.
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*/
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int
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an_alloc_port(dev, rid, size)
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device_t dev;
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int rid;
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int size;
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{
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struct an_softc *sc = device_get_softc(dev);
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struct resource *res;
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res = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
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0ul, ~0ul, size, RF_ACTIVE);
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if (res) {
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sc->port_rid = rid;
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sc->port_res = res;
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return (0);
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} else {
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return (ENOENT);
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}
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}
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/*
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* Allocate an irq resource with the given resource id.
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*/
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int
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an_alloc_irq(dev, rid, flags)
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device_t dev;
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int rid;
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int flags;
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{
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struct an_softc *sc = device_get_softc(dev);
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struct resource *res;
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res = bus_alloc_resource(dev, SYS_RES_IRQ, &rid,
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0ul, ~0ul, 1, (RF_ACTIVE | flags));
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if (res) {
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sc->irq_rid = rid;
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sc->irq_res = res;
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return (0);
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} else {
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return (ENOENT);
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}
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}
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/*
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* Release all resources
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*/
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void
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an_release_resources(dev)
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device_t dev;
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{
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struct an_softc *sc = device_get_softc(dev);
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if (sc->port_res) {
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bus_release_resource(dev, SYS_RES_IOPORT,
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sc->port_rid, sc->port_res);
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sc->port_res = 0;
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}
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if (sc->irq_res) {
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bus_release_resource(dev, SYS_RES_IRQ,
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sc->irq_rid, sc->irq_res);
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sc->irq_res = 0;
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}
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}
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int an_attach(sc, unit, flags)
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struct an_softc *sc;
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int unit;
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int flags;
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{
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struct ifnet *ifp = &sc->arpcom.ac_if;
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mtx_init(&sc->an_mtx, device_get_nameunit(sc->an_dev), MTX_DEF);
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AN_LOCK(sc);
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sc->an_gone = 0;
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sc->an_associated = 0;
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/* Reset the NIC. */
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an_reset(sc);
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/* Load factory config */
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if (an_cmd(sc, AN_CMD_READCFG, 0)) {
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printf("an%d: failed to load config data\n", sc->an_unit);
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AN_UNLOCK(sc);
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mtx_destroy(&sc->an_mtx);
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return(EIO);
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}
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/* Read the current configuration */
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sc->an_config.an_type = AN_RID_GENCONFIG;
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sc->an_config.an_len = sizeof(struct an_ltv_genconfig);
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if (an_read_record(sc, (struct an_ltv_gen *)&sc->an_config)) {
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printf("an%d: read record failed\n", sc->an_unit);
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AN_UNLOCK(sc);
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mtx_destroy(&sc->an_mtx);
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return(EIO);
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}
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/* Read the card capabilities */
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sc->an_caps.an_type = AN_RID_CAPABILITIES;
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sc->an_caps.an_len = sizeof(struct an_ltv_caps);
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if (an_read_record(sc, (struct an_ltv_gen *)&sc->an_caps)) {
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printf("an%d: read record failed\n", sc->an_unit);
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AN_UNLOCK(sc);
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mtx_destroy(&sc->an_mtx);
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return(EIO);
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}
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/* Read ssid list */
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sc->an_ssidlist.an_type = AN_RID_SSIDLIST;
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sc->an_ssidlist.an_len = sizeof(struct an_ltv_ssidlist);
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if (an_read_record(sc, (struct an_ltv_gen *)&sc->an_ssidlist)) {
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printf("an%d: read record failed\n", sc->an_unit);
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AN_UNLOCK(sc);
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mtx_destroy(&sc->an_mtx);
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return(EIO);
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}
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/* Read AP list */
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sc->an_aplist.an_type = AN_RID_APLIST;
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sc->an_aplist.an_len = sizeof(struct an_ltv_aplist);
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if (an_read_record(sc, (struct an_ltv_gen *)&sc->an_aplist)) {
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printf("an%d: read record failed\n", sc->an_unit);
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AN_UNLOCK(sc);
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mtx_destroy(&sc->an_mtx);
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return(EIO);
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}
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bcopy((char *)&sc->an_caps.an_oemaddr,
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(char *)&sc->arpcom.ac_enaddr, ETHER_ADDR_LEN);
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printf("an%d: Ethernet address: %6D\n", sc->an_unit,
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sc->arpcom.ac_enaddr, ":");
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ifp->if_softc = sc;
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ifp->if_unit = sc->an_unit = unit;
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ifp->if_name = "an";
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ifp->if_mtu = ETHERMTU;
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ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
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ifp->if_ioctl = an_ioctl;
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ifp->if_output = ether_output;
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ifp->if_start = an_start;
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ifp->if_watchdog = an_watchdog;
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ifp->if_init = an_init;
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ifp->if_baudrate = 10000000;
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ifp->if_snd.ifq_maxlen = IFQ_MAXLEN;
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bzero(sc->an_config.an_nodename, sizeof(sc->an_config.an_nodename));
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bcopy(AN_DEFAULT_NODENAME, sc->an_config.an_nodename,
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sizeof(AN_DEFAULT_NODENAME) - 1);
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bzero(sc->an_ssidlist.an_ssid1, sizeof(sc->an_ssidlist.an_ssid1));
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bcopy(AN_DEFAULT_NETNAME, sc->an_ssidlist.an_ssid1,
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sizeof(AN_DEFAULT_NETNAME) - 1);
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sc->an_ssidlist.an_ssid1_len = strlen(AN_DEFAULT_NETNAME);
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sc->an_config.an_opmode =
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AN_OPMODE_IBSS_ADHOC;
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sc->an_tx_rate = 0;
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bzero((char *)&sc->an_stats, sizeof(sc->an_stats));
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/*
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* Call MI attach routine.
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*/
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ether_ifattach(ifp, ETHER_BPF_SUPPORTED);
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callout_handle_init(&sc->an_stat_ch);
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AN_UNLOCK(sc);
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return(0);
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}
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static void an_rxeof(sc)
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struct an_softc *sc;
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{
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struct ifnet *ifp;
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struct ether_header *eh;
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#ifdef ANCACHE
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struct an_rxframe rx_frame;
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#endif
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struct an_rxframe_802_3 rx_frame_802_3;
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struct mbuf *m;
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int id, error = 0;
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ifp = &sc->arpcom.ac_if;
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id = CSR_READ_2(sc, AN_RX_FID);
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MGETHDR(m, M_DONTWAIT, MT_DATA);
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if (m == NULL) {
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ifp->if_ierrors++;
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return;
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}
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MCLGET(m, M_DONTWAIT);
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if (!(m->m_flags & M_EXT)) {
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m_freem(m);
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ifp->if_ierrors++;
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return;
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}
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m->m_pkthdr.rcvif = ifp;
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eh = mtod(m, struct ether_header *);
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|
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#ifdef ANCACHE
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/* Read NIC frame header */
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if (an_read_data(sc, id, 0, (caddr_t)&rx_frame, sizeof(rx_frame))) {
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ifp->if_ierrors++;
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return;
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}
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#endif
|
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/* Read in the 802_3 frame header */
|
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if (an_read_data(sc, id, 0x34, (caddr_t)&rx_frame_802_3,
|
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sizeof(rx_frame_802_3))) {
|
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ifp->if_ierrors++;
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|
return;
|
|
}
|
|
|
|
if (rx_frame_802_3.an_rx_802_3_status != 0) {
|
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ifp->if_ierrors++;
|
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return;
|
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}
|
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|
|
/* Check for insane frame length */
|
|
if (rx_frame_802_3.an_rx_802_3_payload_len > MCLBYTES) {
|
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ifp->if_ierrors++;
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return;
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}
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|
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m->m_pkthdr.len = m->m_len =
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rx_frame_802_3.an_rx_802_3_payload_len + 12;
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|
|
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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),
|
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rx_frame_802_3.an_rx_802_3_payload_len);
|
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|
|
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;
|
|
|
|
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++;
|
|
|
|
if (id != sc->an_rdata.an_tx_ring[sc->an_rdata.an_tx_cons])
|
|
printf("an%d: id mismatch: expected %x, got %x\n",
|
|
sc->an_unit,
|
|
sc->an_rdata.an_tx_ring[sc->an_rdata.an_tx_cons], id);
|
|
|
|
sc->an_rdata.an_tx_ring[sc->an_rdata.an_tx_cons] = 0;
|
|
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;
|
|
|
|
if (!(ifp->if_flags & IFF_UP)) {
|
|
CSR_WRITE_2(sc, AN_EVENT_ACK, 0xFFFF);
|
|
CSR_WRITE_2(sc, AN_INT_EN, 0);
|
|
AN_UNLOCK(sc);
|
|
return;
|
|
}
|
|
|
|
/* 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_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;
|
|
int i, len;
|
|
|
|
if (ltv->an_len == 0 || 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).
|
|
*/
|
|
len = CSR_READ_2(sc, AN_DATA1);
|
|
if (len > ltv->an_len) {
|
|
printf("an%d: record length mismatch -- expected %d, "
|
|
"got %d\n", sc->an_unit, ltv->an_len, len);
|
|
return(ENOSPC);
|
|
}
|
|
|
|
ltv->an_len = len;
|
|
|
|
/* Now read the data. */
|
|
ptr = <v->an_val;
|
|
for (i = 0; i < (ltv->an_len - 1) >> 1; i++)
|
|
ptr[i] = CSR_READ_2(sc, AN_DATA1);
|
|
|
|
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;
|
|
int i;
|
|
|
|
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);
|
|
|
|
CSR_WRITE_2(sc, AN_DATA1, ltv->an_len);
|
|
|
|
ptr = <v->an_val;
|
|
for (i = 0; i < (ltv->an_len - 1) >> 1; i++)
|
|
CSR_WRITE_2(sc, AN_DATA1, ptr[i]);
|
|
|
|
if (an_cmd(sc, AN_CMD_ACCESS|AN_ACCESS_WRITE, ltv->an_type))
|
|
return(EIO);
|
|
|
|
return(0);
|
|
}
|
|
|
|
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 = 0; i < len / 2; i++)
|
|
ptr[i] = CSR_READ_2(sc, AN_DATA1);
|
|
i*=2;
|
|
if (i<len){
|
|
ptr2 = (u_int8_t *)buf;
|
|
ptr2[i] = 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 = 0; i < (len / 2); i++)
|
|
CSR_WRITE_2(sc, AN_DATA0, ptr[i]);
|
|
i*=2;
|
|
if (i<len){
|
|
ptr2 = (u_int8_t *)buf;
|
|
CSR_WRITE_1(sc, AN_DATA0, ptr2[i]);
|
|
}
|
|
|
|
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 = ifnet_addrs[ifp->if_index - 1];
|
|
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;
|
|
default:
|
|
printf("an%d: unknown RID: %x\n", sc->an_unit, areq->an_type);
|
|
return;
|
|
break;
|
|
}
|
|
|
|
|
|
/* Reinitialize the card. */
|
|
if (ifp->if_flags & IFF_UP)
|
|
an_init(sc);
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* We can't change the NIC configuration while the MAC is enabled,
|
|
* so in order to turn on RX monitor mode, we have to turn the MAC
|
|
* off first.
|
|
*/
|
|
static void an_promisc(sc, promisc)
|
|
struct an_softc *sc;
|
|
int promisc;
|
|
{
|
|
/* Disable the MAC. */
|
|
an_cmd(sc, AN_CMD_DISABLE, 0);
|
|
|
|
/* Set RX mode. */
|
|
if (promisc &&
|
|
!(sc->an_config.an_rxmode & AN_RXMODE_LAN_MONITOR_CURBSS)
|
|
) {
|
|
sc->an_rxmode = sc->an_config.an_rxmode;
|
|
sc->an_config.an_rxmode |=
|
|
AN_RXMODE_LAN_MONITOR_CURBSS;
|
|
} else {
|
|
sc->an_config.an_rxmode = sc->an_rxmode;
|
|
}
|
|
|
|
/* Transfer the configuration to 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);
|
|
return;
|
|
}
|
|
/* Turn the MAC back on. */
|
|
an_cmd(sc, AN_CMD_ENABLE, 0);
|
|
|
|
return;
|
|
}
|
|
|
|
static int an_ioctl(ifp, command, data)
|
|
struct ifnet *ifp;
|
|
u_long command;
|
|
caddr_t data;
|
|
{
|
|
int error = 0;
|
|
struct an_softc *sc;
|
|
struct an_req areq;
|
|
struct ifreq *ifr;
|
|
struct proc *p = curproc;
|
|
|
|
sc = ifp->if_softc;
|
|
AN_LOCK(sc);
|
|
ifr = (struct ifreq *)data;
|
|
|
|
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 SIOCADDMULTI:
|
|
case SIOCDELMULTI:
|
|
/* The Aironet has no multicast filter. */
|
|
error = 0;
|
|
break;
|
|
case SIOCGAIRONET:
|
|
error = copyin(ifr->ifr_data, &areq, sizeof(areq));
|
|
if (error)
|
|
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)
|
|
break;
|
|
an_setdef(sc, &areq);
|
|
break;
|
|
default:
|
|
error = EINVAL;
|
|
break;
|
|
}
|
|
out:
|
|
AN_UNLOCK(sc);
|
|
|
|
return(error);
|
|
}
|
|
|
|
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;
|
|
|
|
/* Initialize promisc mode. */
|
|
if (ifp->if_flags & IFF_PROMISC)
|
|
sc->an_config.an_rxmode |= AN_RXMODE_LAN_MONITOR_CURBSS;
|
|
|
|
sc->an_rxmode = sc->an_config.an_rxmode;
|
|
|
|
/* 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;
|
|
}
|
|
|
|
/* 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;
|
|
|
|
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
|