918 lines
27 KiB
C
918 lines
27 KiB
C
/* $OpenBSD: if_iwm.c,v 1.39 2015/03/23 00:35:19 jsg Exp $ */
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/*
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* Copyright (c) 2014 genua mbh <info@genua.de>
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* Copyright (c) 2014 Fixup Software Ltd.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/*-
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* Based on BSD-licensed source modules in the Linux iwlwifi driver,
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* which were used as the reference documentation for this implementation.
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*
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* Driver version we are currently based off of is
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* Linux 3.14.3 (tag id a2df521e42b1d9a23f620ac79dbfe8655a8391dd)
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*
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***********************************************************************
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*
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* This file is provided under a dual BSD/GPLv2 license. When using or
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* redistributing this file, you may do so under either license.
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*
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* GPL LICENSE SUMMARY
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*
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* Copyright(c) 2007 - 2013 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
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* USA
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*
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* The full GNU General Public License is included in this distribution
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* in the file called COPYING.
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*
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* Contact Information:
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* Intel Linux Wireless <ilw@linux.intel.com>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*
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*
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* BSD LICENSE
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*
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* Copyright(c) 2005 - 2013 Intel Corporation. All rights reserved.
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* 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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*
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* * 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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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*-
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* Copyright (c) 2007-2010 Damien Bergamini <damien.bergamini@free.fr>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/cdefs.h>
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#include "opt_wlan.h"
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#include "opt_iwm.h"
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#include <sys/param.h>
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#include <sys/bus.h>
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#include <sys/conf.h>
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#include <sys/endian.h>
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#include <sys/firmware.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/mbuf.h>
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#include <sys/mutex.h>
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#include <sys/module.h>
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#include <sys/proc.h>
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#include <sys/rman.h>
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#include <sys/socket.h>
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#include <sys/sockio.h>
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#include <sys/sysctl.h>
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#include <sys/linker.h>
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#include <machine/bus.h>
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#include <machine/endian.h>
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#include <machine/resource.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcireg.h>
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#include <net/bpf.h>
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#include <net/if.h>
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#include <net/if_var.h>
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#include <net/if_arp.h>
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#include <net/if_dl.h>
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#include <net/if_media.h>
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#include <net/if_types.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/if_ether.h>
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#include <netinet/ip.h>
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#include <net80211/ieee80211_var.h>
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#include <net80211/ieee80211_regdomain.h>
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#include <net80211/ieee80211_ratectl.h>
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#include <net80211/ieee80211_radiotap.h>
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#include <dev/iwm/if_iwmreg.h>
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#include <dev/iwm/if_iwmvar.h>
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#include <dev/iwm/if_iwm_debug.h>
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#include <dev/iwm/if_iwm_notif_wait.h>
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#include <dev/iwm/if_iwm_util.h>
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#include <dev/iwm/if_iwm_scan.h>
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/*
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* BEGIN mvm/scan.c
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*/
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#define IWM_DENSE_EBS_SCAN_RATIO 5
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#define IWM_SPARSE_EBS_SCAN_RATIO 1
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static uint16_t
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iwm_scan_rx_chain(struct iwm_softc *sc)
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{
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uint16_t rx_chain;
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uint8_t rx_ant;
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rx_ant = iwm_get_valid_rx_ant(sc);
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rx_chain = rx_ant << IWM_PHY_RX_CHAIN_VALID_POS;
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rx_chain |= rx_ant << IWM_PHY_RX_CHAIN_FORCE_MIMO_SEL_POS;
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rx_chain |= rx_ant << IWM_PHY_RX_CHAIN_FORCE_SEL_POS;
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rx_chain |= 0x1 << IWM_PHY_RX_CHAIN_DRIVER_FORCE_POS;
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return htole16(rx_chain);
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}
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static uint32_t
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iwm_scan_rxon_flags(struct ieee80211_channel *c)
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{
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if (IEEE80211_IS_CHAN_2GHZ(c))
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return htole32(IWM_PHY_BAND_24);
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else
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return htole32(IWM_PHY_BAND_5);
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}
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static uint32_t
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iwm_scan_rate_n_flags(struct iwm_softc *sc, int flags, int no_cck)
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{
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uint32_t tx_ant;
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int i, ind;
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for (i = 0, ind = sc->sc_scan_last_antenna;
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i < IWM_RATE_MCS_ANT_NUM; i++) {
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ind = (ind + 1) % IWM_RATE_MCS_ANT_NUM;
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if (iwm_get_valid_tx_ant(sc) & (1 << ind)) {
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sc->sc_scan_last_antenna = ind;
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break;
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}
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}
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tx_ant = (1 << sc->sc_scan_last_antenna) << IWM_RATE_MCS_ANT_POS;
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if ((flags & IEEE80211_CHAN_2GHZ) && !no_cck)
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return htole32(IWM_RATE_1M_PLCP | IWM_RATE_MCS_CCK_MSK |
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tx_ant);
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else
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return htole32(IWM_RATE_6M_PLCP | tx_ant);
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}
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static inline boolean_t
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iwm_rrm_scan_needed(struct iwm_softc *sc)
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{
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/* require rrm scan whenever the fw supports it */
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return iwm_fw_has_capa(sc, IWM_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT);
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}
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#ifdef IWM_DEBUG
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static const char *
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iwm_ebs_status_str(enum iwm_scan_ebs_status status)
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{
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switch (status) {
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case IWM_SCAN_EBS_SUCCESS:
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return "successful";
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case IWM_SCAN_EBS_INACTIVE:
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return "inactive";
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case IWM_SCAN_EBS_FAILED:
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case IWM_SCAN_EBS_CHAN_NOT_FOUND:
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default:
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return "failed";
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}
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}
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static const char *
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iwm_offload_status_str(enum iwm_scan_offload_complete_status status)
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{
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return (status == IWM_SCAN_OFFLOAD_ABORTED) ? "aborted" : "completed";
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}
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#endif
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void
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iwm_rx_lmac_scan_complete_notif(struct iwm_softc *sc,
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struct iwm_rx_packet *pkt)
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{
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struct iwm_periodic_scan_complete *scan_notif = (void *)pkt->data;
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/* If this happens, the firmware has mistakenly sent an LMAC
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* notification during UMAC scans -- warn and ignore it.
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*/
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if (iwm_fw_has_capa(sc, IWM_UCODE_TLV_CAPA_UMAC_SCAN)) {
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device_printf(sc->sc_dev,
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"%s: Mistakenly got LMAC notification during UMAC scan\n",
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__func__);
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return;
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}
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IWM_DPRINTF(sc, IWM_DEBUG_SCAN, "Regular scan %s, EBS status %s (FW)\n",
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iwm_offload_status_str(scan_notif->status),
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iwm_ebs_status_str(scan_notif->ebs_status));
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sc->last_ebs_successful =
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scan_notif->ebs_status == IWM_SCAN_EBS_SUCCESS ||
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scan_notif->ebs_status == IWM_SCAN_EBS_INACTIVE;
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}
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void
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iwm_rx_umac_scan_complete_notif(struct iwm_softc *sc,
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struct iwm_rx_packet *pkt)
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{
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struct iwm_umac_scan_complete *notif = (void *)pkt->data;
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IWM_DPRINTF(sc, IWM_DEBUG_SCAN,
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"Scan completed, uid %u, status %s, EBS status %s\n",
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le32toh(notif->uid),
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iwm_offload_status_str(notif->status),
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iwm_ebs_status_str(notif->ebs_status));
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if (notif->ebs_status != IWM_SCAN_EBS_SUCCESS &&
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notif->ebs_status != IWM_SCAN_EBS_INACTIVE)
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sc->last_ebs_successful = FALSE;
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}
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static int
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iwm_scan_skip_channel(struct ieee80211_channel *c)
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{
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if (IEEE80211_IS_CHAN_2GHZ(c) && IEEE80211_IS_CHAN_B(c))
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return 0;
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else if (IEEE80211_IS_CHAN_5GHZ(c) && IEEE80211_IS_CHAN_A(c))
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return 0;
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else
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return 1;
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}
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static uint8_t
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iwm_lmac_scan_fill_channels(struct iwm_softc *sc,
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struct iwm_scan_channel_cfg_lmac *chan, int n_ssids)
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{
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struct ieee80211com *ic = &sc->sc_ic;
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struct ieee80211_scan_state *ss = ic->ic_scan;
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struct ieee80211_channel *c;
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uint8_t nchan;
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int j;
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for (nchan = j = 0;
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j < ss->ss_last && nchan < sc->sc_fw.ucode_capa.n_scan_channels;
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j++) {
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c = ss->ss_chans[j];
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/*
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* Catch other channels, in case we have 900MHz channels or
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* something in the chanlist.
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*/
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if (!IEEE80211_IS_CHAN_2GHZ(c) && !IEEE80211_IS_CHAN_5GHZ(c)) {
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IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_EEPROM,
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"%s: skipping channel (freq=%d, ieee=%d, flags=0x%08x)\n",
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__func__, c->ic_freq, c->ic_ieee, c->ic_flags);
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continue;
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}
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IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_EEPROM,
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"Adding channel %d (%d Mhz) to the list\n",
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nchan, c->ic_freq);
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chan->channel_num = htole16(ieee80211_mhz2ieee(c->ic_freq, 0));
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chan->iter_count = htole16(1);
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chan->iter_interval = htole32(0);
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chan->flags = htole32(IWM_UNIFIED_SCAN_CHANNEL_PARTIAL);
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chan->flags |= htole32(IWM_SCAN_CHANNEL_NSSIDS(n_ssids));
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/* XXX IEEE80211_SCAN_NOBCAST flag is never set. */
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if (!IEEE80211_IS_CHAN_PASSIVE(c) &&
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(!(ss->ss_flags & IEEE80211_SCAN_NOBCAST) || n_ssids != 0))
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chan->flags |= htole32(IWM_SCAN_CHANNEL_TYPE_ACTIVE);
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chan++;
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nchan++;
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}
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return nchan;
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}
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static uint8_t
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iwm_umac_scan_fill_channels(struct iwm_softc *sc,
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struct iwm_scan_channel_cfg_umac *chan, int n_ssids)
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{
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struct ieee80211com *ic = &sc->sc_ic;
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struct ieee80211_scan_state *ss = ic->ic_scan;
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struct ieee80211_channel *c;
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uint8_t nchan;
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int j;
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for (nchan = j = 0;
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j < ss->ss_last && nchan < sc->sc_fw.ucode_capa.n_scan_channels;
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j++) {
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c = ss->ss_chans[j];
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/*
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* Catch other channels, in case we have 900MHz channels or
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* something in the chanlist.
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*/
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if (!IEEE80211_IS_CHAN_2GHZ(c) && !IEEE80211_IS_CHAN_5GHZ(c)) {
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IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_EEPROM,
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"%s: skipping channel (freq=%d, ieee=%d, flags=0x%08x)\n",
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__func__, c->ic_freq, c->ic_ieee, c->ic_flags);
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continue;
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}
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IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_EEPROM,
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"Adding channel %d (%d Mhz) to the list\n",
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nchan, c->ic_freq);
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chan->channel_num = ieee80211_mhz2ieee(c->ic_freq, 0);
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chan->iter_count = 1;
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chan->iter_interval = htole16(0);
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chan->flags = htole32(IWM_SCAN_CHANNEL_UMAC_NSSIDS(n_ssids));
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chan++;
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nchan++;
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}
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return nchan;
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}
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static int
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iwm_fill_probe_req(struct iwm_softc *sc, struct iwm_scan_probe_req_v1 *preq)
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{
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struct ieee80211com *ic = &sc->sc_ic;
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struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
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struct ieee80211_frame *wh = (struct ieee80211_frame *)preq->buf;
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struct ieee80211_rateset *rs;
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size_t remain = sizeof(preq->buf);
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uint8_t *frm, *pos;
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memset(preq, 0, sizeof(*preq));
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/* Ensure enough space for header and SSID IE. */
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if (remain < sizeof(*wh) + 2)
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return ENOBUFS;
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/*
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* Build a probe request frame. Most of the following code is a
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* copy & paste of what is done in net80211.
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*/
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wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT |
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IEEE80211_FC0_SUBTYPE_PROBE_REQ;
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wh->i_fc[1] = IEEE80211_FC1_DIR_NODS;
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IEEE80211_ADDR_COPY(wh->i_addr1, ieee80211broadcastaddr);
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IEEE80211_ADDR_COPY(wh->i_addr2, vap ? vap->iv_myaddr : ic->ic_macaddr);
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IEEE80211_ADDR_COPY(wh->i_addr3, ieee80211broadcastaddr);
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*(uint16_t *)&wh->i_dur[0] = 0; /* filled by HW */
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*(uint16_t *)&wh->i_seq[0] = 0; /* filled by HW */
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frm = (uint8_t *)(wh + 1);
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frm = ieee80211_add_ssid(frm, NULL, 0);
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/* Tell the firmware where the MAC header is. */
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preq->mac_header.offset = 0;
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preq->mac_header.len = htole16(frm - (uint8_t *)wh);
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remain -= frm - (uint8_t *)wh;
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/* Fill in 2GHz IEs and tell firmware where they are. */
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rs = &ic->ic_sup_rates[IEEE80211_MODE_11G];
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if (rs->rs_nrates > IEEE80211_RATE_SIZE) {
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if (remain < 4 + rs->rs_nrates)
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return ENOBUFS;
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} else if (remain < 2 + rs->rs_nrates) {
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return ENOBUFS;
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}
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preq->band_data[0].offset = htole16(frm - (uint8_t *)wh);
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pos = frm;
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frm = ieee80211_add_rates(frm, rs);
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if (rs->rs_nrates > IEEE80211_RATE_SIZE)
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frm = ieee80211_add_xrates(frm, rs);
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preq->band_data[0].len = htole16(frm - pos);
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remain -= frm - pos;
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if (iwm_rrm_scan_needed(sc)) {
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if (remain < 3)
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return ENOBUFS;
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*frm++ = IEEE80211_ELEMID_DSPARMS;
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*frm++ = 1;
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*frm++ = 0;
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remain -= 3;
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}
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if (sc->nvm_data->sku_cap_band_52GHz_enable) {
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/* Fill in 5GHz IEs. */
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rs = &ic->ic_sup_rates[IEEE80211_MODE_11A];
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if (rs->rs_nrates > IEEE80211_RATE_SIZE) {
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if (remain < 4 + rs->rs_nrates)
|
|
return ENOBUFS;
|
|
} else if (remain < 2 + rs->rs_nrates) {
|
|
return ENOBUFS;
|
|
}
|
|
preq->band_data[1].offset = htole16(frm - (uint8_t *)wh);
|
|
pos = frm;
|
|
frm = ieee80211_add_rates(frm, rs);
|
|
if (rs->rs_nrates > IEEE80211_RATE_SIZE)
|
|
frm = ieee80211_add_xrates(frm, rs);
|
|
preq->band_data[1].len = htole16(frm - pos);
|
|
remain -= frm - pos;
|
|
}
|
|
|
|
/* Send 11n IEs on both 2GHz and 5GHz bands. */
|
|
preq->common_data.offset = htole16(frm - (uint8_t *)wh);
|
|
pos = frm;
|
|
#if 0
|
|
if (ic->ic_flags & IEEE80211_F_HTON) {
|
|
if (remain < 28)
|
|
return ENOBUFS;
|
|
frm = ieee80211_add_htcaps(frm, ic);
|
|
/* XXX add WME info? */
|
|
}
|
|
#endif
|
|
preq->common_data.len = htole16(frm - pos);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
iwm_config_umac_scan(struct iwm_softc *sc)
|
|
{
|
|
struct ieee80211com *ic = &sc->sc_ic;
|
|
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
|
|
|
|
struct iwm_scan_config *scan_config;
|
|
int ret, j, nchan;
|
|
size_t cmd_size;
|
|
struct ieee80211_channel *c;
|
|
struct iwm_host_cmd hcmd = {
|
|
.id = iwm_cmd_id(IWM_SCAN_CFG_CMD, IWM_ALWAYS_LONG_GROUP, 0),
|
|
.flags = IWM_CMD_SYNC,
|
|
};
|
|
static const uint32_t rates = (IWM_SCAN_CONFIG_RATE_1M |
|
|
IWM_SCAN_CONFIG_RATE_2M | IWM_SCAN_CONFIG_RATE_5M |
|
|
IWM_SCAN_CONFIG_RATE_11M | IWM_SCAN_CONFIG_RATE_6M |
|
|
IWM_SCAN_CONFIG_RATE_9M | IWM_SCAN_CONFIG_RATE_12M |
|
|
IWM_SCAN_CONFIG_RATE_18M | IWM_SCAN_CONFIG_RATE_24M |
|
|
IWM_SCAN_CONFIG_RATE_36M | IWM_SCAN_CONFIG_RATE_48M |
|
|
IWM_SCAN_CONFIG_RATE_54M);
|
|
|
|
cmd_size = sizeof(*scan_config) + sc->sc_fw.ucode_capa.n_scan_channels;
|
|
|
|
scan_config = malloc(cmd_size, M_DEVBUF, M_NOWAIT | M_ZERO);
|
|
if (scan_config == NULL)
|
|
return ENOMEM;
|
|
|
|
scan_config->tx_chains = htole32(iwm_get_valid_tx_ant(sc));
|
|
scan_config->rx_chains = htole32(iwm_get_valid_rx_ant(sc));
|
|
scan_config->legacy_rates = htole32(rates |
|
|
IWM_SCAN_CONFIG_SUPPORTED_RATE(rates));
|
|
|
|
/* These timings correspond to iwlwifi's UNASSOC scan. */
|
|
scan_config->dwell_active = 10;
|
|
scan_config->dwell_passive = 110;
|
|
scan_config->dwell_fragmented = 44;
|
|
scan_config->dwell_extended = 90;
|
|
scan_config->out_of_channel_time = htole32(0);
|
|
scan_config->suspend_time = htole32(0);
|
|
|
|
IEEE80211_ADDR_COPY(scan_config->mac_addr,
|
|
vap ? vap->iv_myaddr : ic->ic_macaddr);
|
|
|
|
scan_config->bcast_sta_id = sc->sc_aux_sta.sta_id;
|
|
scan_config->channel_flags = IWM_CHANNEL_FLAG_EBS |
|
|
IWM_CHANNEL_FLAG_ACCURATE_EBS | IWM_CHANNEL_FLAG_EBS_ADD |
|
|
IWM_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE;
|
|
|
|
for (nchan = j = 0;
|
|
j < ic->ic_nchans && nchan < sc->sc_fw.ucode_capa.n_scan_channels;
|
|
j++) {
|
|
c = &ic->ic_channels[j];
|
|
/* For 2GHz, only populate 11b channels */
|
|
/* For 5GHz, only populate 11a channels */
|
|
/*
|
|
* Catch other channels, in case we have 900MHz channels or
|
|
* something in the chanlist.
|
|
*/
|
|
if (iwm_scan_skip_channel(c))
|
|
continue;
|
|
scan_config->channel_array[nchan++] =
|
|
ieee80211_mhz2ieee(c->ic_freq, 0);
|
|
}
|
|
|
|
scan_config->flags = htole32(IWM_SCAN_CONFIG_FLAG_ACTIVATE |
|
|
IWM_SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS |
|
|
IWM_SCAN_CONFIG_FLAG_SET_TX_CHAINS |
|
|
IWM_SCAN_CONFIG_FLAG_SET_RX_CHAINS |
|
|
IWM_SCAN_CONFIG_FLAG_SET_AUX_STA_ID |
|
|
IWM_SCAN_CONFIG_FLAG_SET_ALL_TIMES |
|
|
IWM_SCAN_CONFIG_FLAG_SET_LEGACY_RATES |
|
|
IWM_SCAN_CONFIG_FLAG_SET_MAC_ADDR |
|
|
IWM_SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS|
|
|
IWM_SCAN_CONFIG_N_CHANNELS(nchan) |
|
|
IWM_SCAN_CONFIG_FLAG_CLEAR_FRAGMENTED);
|
|
|
|
hcmd.data[0] = scan_config;
|
|
hcmd.len[0] = cmd_size;
|
|
|
|
IWM_DPRINTF(sc, IWM_DEBUG_SCAN, "Sending UMAC scan config\n");
|
|
|
|
ret = iwm_send_cmd(sc, &hcmd);
|
|
if (!ret)
|
|
IWM_DPRINTF(sc, IWM_DEBUG_SCAN,
|
|
"UMAC scan config was sent successfully\n");
|
|
|
|
free(scan_config, M_DEVBUF);
|
|
return ret;
|
|
}
|
|
|
|
static boolean_t
|
|
iwm_scan_use_ebs(struct iwm_softc *sc)
|
|
{
|
|
const struct iwm_ucode_capabilities *capa = &sc->sc_fw.ucode_capa;
|
|
|
|
/* We can only use EBS if:
|
|
* 1. the feature is supported;
|
|
* 2. the last EBS was successful;
|
|
* 3. if only single scan, the single scan EBS API is supported;
|
|
* 4. it's not a p2p find operation.
|
|
*/
|
|
return ((capa->flags & IWM_UCODE_TLV_FLAGS_EBS_SUPPORT) &&
|
|
sc->last_ebs_successful);
|
|
}
|
|
|
|
static int
|
|
iwm_scan_size(struct iwm_softc *sc)
|
|
{
|
|
int base_size;
|
|
|
|
if (iwm_fw_has_capa(sc, IWM_UCODE_TLV_CAPA_UMAC_SCAN)) {
|
|
if (iwm_fw_has_api(sc, IWM_UCODE_TLV_API_ADAPTIVE_DWELL))
|
|
base_size = IWM_SCAN_REQ_UMAC_SIZE_V7;
|
|
else
|
|
base_size = IWM_SCAN_REQ_UMAC_SIZE_V1;
|
|
|
|
return base_size +
|
|
sizeof(struct iwm_scan_channel_cfg_umac) *
|
|
sc->sc_fw.ucode_capa.n_scan_channels +
|
|
sizeof(struct iwm_scan_req_umac_tail_v1);
|
|
} else {
|
|
return sizeof(struct iwm_scan_req_lmac) +
|
|
sizeof(struct iwm_scan_channel_cfg_lmac) *
|
|
sc->sc_fw.ucode_capa.n_scan_channels +
|
|
sizeof(struct iwm_scan_probe_req_v1);
|
|
}
|
|
}
|
|
|
|
int
|
|
iwm_umac_scan(struct iwm_softc *sc)
|
|
{
|
|
struct iwm_host_cmd hcmd = {
|
|
.id = iwm_cmd_id(IWM_SCAN_REQ_UMAC, IWM_ALWAYS_LONG_GROUP, 0),
|
|
.len = { 0, },
|
|
.data = { NULL, },
|
|
.flags = IWM_CMD_SYNC,
|
|
};
|
|
struct ieee80211_scan_state *ss = sc->sc_ic.ic_scan;
|
|
struct iwm_scan_req_umac *req;
|
|
struct iwm_scan_req_umac_tail_v1 *tail;
|
|
size_t req_len;
|
|
uint16_t general_flags;
|
|
uint8_t channel_flags, i, nssid;
|
|
int ret;
|
|
|
|
req_len = iwm_scan_size(sc);
|
|
if (req_len > IWM_MAX_CMD_PAYLOAD_SIZE)
|
|
return ENOMEM;
|
|
req = malloc(req_len, M_DEVBUF, M_NOWAIT | M_ZERO);
|
|
if (req == NULL)
|
|
return ENOMEM;
|
|
|
|
hcmd.len[0] = (uint16_t)req_len;
|
|
hcmd.data[0] = (void *)req;
|
|
|
|
IWM_DPRINTF(sc, IWM_DEBUG_SCAN, "Handling ieee80211 scan request\n");
|
|
|
|
nssid = MIN(ss->ss_nssid, IWM_PROBE_OPTION_MAX);
|
|
|
|
general_flags = IWM_UMAC_SCAN_GEN_FLAGS_PASS_ALL |
|
|
IWM_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE;
|
|
if (!iwm_fw_has_api(sc, IWM_UCODE_TLV_API_ADAPTIVE_DWELL))
|
|
general_flags |= IWM_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL;
|
|
if (iwm_rrm_scan_needed(sc))
|
|
general_flags |= IWM_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED;
|
|
if (nssid != 0)
|
|
general_flags |= IWM_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT;
|
|
else
|
|
general_flags |= IWM_UMAC_SCAN_GEN_FLAGS_PASSIVE;
|
|
|
|
channel_flags = 0;
|
|
if (iwm_scan_use_ebs(sc))
|
|
channel_flags = IWM_SCAN_CHANNEL_FLAG_EBS |
|
|
IWM_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
|
|
IWM_SCAN_CHANNEL_FLAG_CACHE_ADD;
|
|
|
|
req->general_flags = htole16(general_flags);
|
|
req->ooc_priority = htole32(IWM_SCAN_PRIORITY_HIGH);
|
|
|
|
/* These timings correspond to iwlwifi's UNASSOC scan. */
|
|
if (iwm_fw_has_api(sc, IWM_UCODE_TLV_API_ADAPTIVE_DWELL)) {
|
|
req->v7.active_dwell = 10;
|
|
req->v7.passive_dwell = 110;
|
|
req->v7.fragmented_dwell = 44;
|
|
req->v7.adwell_default_n_aps_social = 10;
|
|
req->v7.adwell_default_n_aps = 2;
|
|
req->v7.adwell_max_budget = htole16(300);
|
|
req->v7.scan_priority = htole32(IWM_SCAN_PRIORITY_HIGH);
|
|
req->v7.channel.flags = channel_flags;
|
|
req->v7.channel.count = iwm_umac_scan_fill_channels(sc,
|
|
(struct iwm_scan_channel_cfg_umac *)req->v7.data, nssid);
|
|
|
|
tail = (void *)((char *)&req->v7.data +
|
|
sizeof(struct iwm_scan_channel_cfg_umac) *
|
|
sc->sc_fw.ucode_capa.n_scan_channels);
|
|
} else {
|
|
req->v1.active_dwell = 10;
|
|
req->v1.passive_dwell = 110;
|
|
req->v1.fragmented_dwell = 44;
|
|
req->v1.extended_dwell = 90;
|
|
req->v1.scan_priority = htole32(IWM_SCAN_PRIORITY_HIGH);
|
|
req->v1.channel.flags = channel_flags;
|
|
req->v1.channel.count = iwm_umac_scan_fill_channels(sc,
|
|
(struct iwm_scan_channel_cfg_umac *)req->v1.data, nssid);
|
|
|
|
tail = (void *)((char *)&req->v1.data +
|
|
sizeof(struct iwm_scan_channel_cfg_umac) *
|
|
sc->sc_fw.ucode_capa.n_scan_channels);
|
|
}
|
|
|
|
/* Check if we're doing an active directed scan. */
|
|
for (i = 0; i < nssid; i++) {
|
|
tail->direct_scan[i].id = IEEE80211_ELEMID_SSID;
|
|
tail->direct_scan[i].len = MIN(ss->ss_ssid[i].len,
|
|
IEEE80211_NWID_LEN);
|
|
memcpy(tail->direct_scan[i].ssid, ss->ss_ssid[i].ssid,
|
|
tail->direct_scan[i].len);
|
|
/* XXX debug */
|
|
}
|
|
|
|
ret = iwm_fill_probe_req(sc, &tail->preq);
|
|
if (ret) {
|
|
free(req, M_DEVBUF);
|
|
return ret;
|
|
}
|
|
|
|
/* Specify the scan plan: We'll do one iteration. */
|
|
tail->schedule[0].interval = 0;
|
|
tail->schedule[0].iter_count = 1;
|
|
|
|
ret = iwm_send_cmd(sc, &hcmd);
|
|
if (!ret)
|
|
IWM_DPRINTF(sc, IWM_DEBUG_SCAN,
|
|
"Scan request was sent successfully\n");
|
|
free(req, M_DEVBUF);
|
|
return ret;
|
|
}
|
|
|
|
int
|
|
iwm_lmac_scan(struct iwm_softc *sc)
|
|
{
|
|
struct iwm_host_cmd hcmd = {
|
|
.id = IWM_SCAN_OFFLOAD_REQUEST_CMD,
|
|
.len = { 0, },
|
|
.data = { NULL, },
|
|
.flags = IWM_CMD_SYNC,
|
|
};
|
|
struct ieee80211_scan_state *ss = sc->sc_ic.ic_scan;
|
|
struct iwm_scan_req_lmac *req;
|
|
size_t req_len;
|
|
uint8_t i, nssid;
|
|
int ret;
|
|
|
|
IWM_DPRINTF(sc, IWM_DEBUG_SCAN,
|
|
"Handling ieee80211 scan request\n");
|
|
|
|
req_len = iwm_scan_size(sc);
|
|
if (req_len > IWM_MAX_CMD_PAYLOAD_SIZE)
|
|
return ENOMEM;
|
|
req = malloc(req_len, M_DEVBUF, M_NOWAIT | M_ZERO);
|
|
if (req == NULL)
|
|
return ENOMEM;
|
|
|
|
hcmd.len[0] = (uint16_t)req_len;
|
|
hcmd.data[0] = (void *)req;
|
|
|
|
/* These timings correspond to iwlwifi's UNASSOC scan. */
|
|
req->active_dwell = 10;
|
|
req->passive_dwell = 110;
|
|
req->fragmented_dwell = 44;
|
|
req->extended_dwell = 90;
|
|
req->max_out_time = 0;
|
|
req->suspend_time = 0;
|
|
|
|
req->scan_prio = htole32(IWM_SCAN_PRIORITY_HIGH);
|
|
req->rx_chain_select = iwm_scan_rx_chain(sc);
|
|
req->iter_num = htole32(1);
|
|
req->delay = 0;
|
|
|
|
req->scan_flags = htole32(IWM_LMAC_SCAN_FLAG_PASS_ALL |
|
|
IWM_LMAC_SCAN_FLAG_ITER_COMPLETE |
|
|
IWM_LMAC_SCAN_FLAG_EXTENDED_DWELL);
|
|
if (iwm_rrm_scan_needed(sc))
|
|
req->scan_flags |= htole32(IWM_LMAC_SCAN_FLAGS_RRM_ENABLED);
|
|
|
|
req->flags = iwm_scan_rxon_flags(sc->sc_ic.ic_scan->ss_chans[0]);
|
|
|
|
req->filter_flags =
|
|
htole32(IWM_MAC_FILTER_ACCEPT_GRP | IWM_MAC_FILTER_IN_BEACON);
|
|
|
|
/* Tx flags 2 GHz. */
|
|
req->tx_cmd[0].tx_flags = htole32(IWM_TX_CMD_FLG_SEQ_CTL |
|
|
IWM_TX_CMD_FLG_BT_DIS);
|
|
req->tx_cmd[0].rate_n_flags =
|
|
iwm_scan_rate_n_flags(sc, IEEE80211_CHAN_2GHZ, 1/*XXX*/);
|
|
req->tx_cmd[0].sta_id = sc->sc_aux_sta.sta_id;
|
|
|
|
/* Tx flags 5 GHz. */
|
|
req->tx_cmd[1].tx_flags = htole32(IWM_TX_CMD_FLG_SEQ_CTL |
|
|
IWM_TX_CMD_FLG_BT_DIS);
|
|
req->tx_cmd[1].rate_n_flags =
|
|
iwm_scan_rate_n_flags(sc, IEEE80211_CHAN_5GHZ, 1/*XXX*/);
|
|
req->tx_cmd[1].sta_id = sc->sc_aux_sta.sta_id;
|
|
|
|
/* Check if we're doing an active directed scan. */
|
|
nssid = MIN(ss->ss_nssid, IWM_PROBE_OPTION_MAX);
|
|
for (i = 0; i < nssid; i++) {
|
|
req->direct_scan[i].id = IEEE80211_ELEMID_SSID;
|
|
req->direct_scan[i].len = MIN(ss->ss_ssid[i].len,
|
|
IEEE80211_NWID_LEN);
|
|
memcpy(req->direct_scan[i].ssid, ss->ss_ssid[i].ssid,
|
|
req->direct_scan[i].len);
|
|
/* XXX debug */
|
|
}
|
|
if (nssid != 0) {
|
|
req->scan_flags |=
|
|
htole32(IWM_LMAC_SCAN_FLAG_PRE_CONNECTION);
|
|
} else
|
|
req->scan_flags |= htole32(IWM_LMAC_SCAN_FLAG_PASSIVE);
|
|
|
|
req->n_channels = iwm_lmac_scan_fill_channels(sc,
|
|
(struct iwm_scan_channel_cfg_lmac *)req->data, nssid);
|
|
|
|
ret = iwm_fill_probe_req(sc,
|
|
(struct iwm_scan_probe_req_v1 *)(req->data +
|
|
(sizeof(struct iwm_scan_channel_cfg_lmac) *
|
|
sc->sc_fw.ucode_capa.n_scan_channels)));
|
|
if (ret) {
|
|
free(req, M_DEVBUF);
|
|
return ret;
|
|
}
|
|
|
|
/* Specify the scan plan: We'll do one iteration. */
|
|
req->schedule[0].iterations = 1;
|
|
req->schedule[0].full_scan_mul = 1;
|
|
|
|
if (iwm_scan_use_ebs(sc)) {
|
|
req->channel_opt[0].flags =
|
|
htole16(IWM_SCAN_CHANNEL_FLAG_EBS |
|
|
IWM_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
|
|
IWM_SCAN_CHANNEL_FLAG_CACHE_ADD);
|
|
req->channel_opt[0].non_ebs_ratio =
|
|
htole16(IWM_DENSE_EBS_SCAN_RATIO);
|
|
req->channel_opt[1].flags =
|
|
htole16(IWM_SCAN_CHANNEL_FLAG_EBS |
|
|
IWM_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
|
|
IWM_SCAN_CHANNEL_FLAG_CACHE_ADD);
|
|
req->channel_opt[1].non_ebs_ratio =
|
|
htole16(IWM_SPARSE_EBS_SCAN_RATIO);
|
|
}
|
|
|
|
ret = iwm_send_cmd(sc, &hcmd);
|
|
if (!ret) {
|
|
IWM_DPRINTF(sc, IWM_DEBUG_SCAN,
|
|
"Scan request was sent successfully\n");
|
|
}
|
|
free(req, M_DEVBUF);
|
|
return ret;
|
|
}
|
|
|
|
static int
|
|
iwm_lmac_scan_abort(struct iwm_softc *sc)
|
|
{
|
|
int ret;
|
|
struct iwm_host_cmd hcmd = {
|
|
.id = IWM_SCAN_OFFLOAD_ABORT_CMD,
|
|
.len = { 0, },
|
|
.data = { NULL, },
|
|
.flags = IWM_CMD_SYNC,
|
|
};
|
|
uint32_t status;
|
|
|
|
ret = iwm_send_cmd_status(sc, &hcmd, &status);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (status != IWM_CAN_ABORT_STATUS) {
|
|
/*
|
|
* The scan abort will return 1 for success or
|
|
* 2 for "failure". A failure condition can be
|
|
* due to simply not being in an active scan which
|
|
* can occur if we send the scan abort before the
|
|
* microcode has notified us that a scan is completed.
|
|
*/
|
|
IWM_DPRINTF(sc, IWM_DEBUG_SCAN,
|
|
"SCAN OFFLOAD ABORT ret %d.\n", status);
|
|
ret = ENOENT;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int
|
|
iwm_umac_scan_abort(struct iwm_softc *sc)
|
|
{
|
|
struct iwm_umac_scan_abort cmd = {};
|
|
int uid, ret;
|
|
|
|
uid = 0;
|
|
cmd.uid = htole32(uid);
|
|
|
|
IWM_DPRINTF(sc, IWM_DEBUG_SCAN, "Sending scan abort, uid %u\n", uid);
|
|
|
|
ret = iwm_send_cmd_pdu(sc,
|
|
iwm_cmd_id(IWM_SCAN_ABORT_UMAC,
|
|
IWM_ALWAYS_LONG_GROUP, 0),
|
|
0, sizeof(cmd), &cmd);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int
|
|
iwm_scan_stop_wait(struct iwm_softc *sc)
|
|
{
|
|
struct iwm_notification_wait wait_scan_done;
|
|
static const uint16_t scan_done_notif[] = { IWM_SCAN_COMPLETE_UMAC,
|
|
IWM_SCAN_OFFLOAD_COMPLETE, };
|
|
int ret;
|
|
|
|
iwm_init_notification_wait(sc->sc_notif_wait, &wait_scan_done,
|
|
scan_done_notif, nitems(scan_done_notif),
|
|
NULL, NULL);
|
|
|
|
IWM_DPRINTF(sc, IWM_DEBUG_SCAN, "Preparing to stop scan\n");
|
|
|
|
if (iwm_fw_has_capa(sc, IWM_UCODE_TLV_CAPA_UMAC_SCAN))
|
|
ret = iwm_umac_scan_abort(sc);
|
|
else
|
|
ret = iwm_lmac_scan_abort(sc);
|
|
|
|
if (ret) {
|
|
IWM_DPRINTF(sc, IWM_DEBUG_SCAN, "couldn't stop scan\n");
|
|
iwm_remove_notification(sc->sc_notif_wait, &wait_scan_done);
|
|
return ret;
|
|
}
|
|
|
|
IWM_UNLOCK(sc);
|
|
ret = iwm_wait_notification(sc->sc_notif_wait, &wait_scan_done, hz);
|
|
IWM_LOCK(sc);
|
|
|
|
return ret;
|
|
}
|