331 lines
9.9 KiB
C
331 lines
9.9 KiB
C
/*
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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 4.7.3 (tag id d7f6728f57e3ecbb7ef34eb7d9f564d514775d75)
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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) 2013 - 2014 Intel Corporation. All rights reserved.
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* Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
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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 <linuxwifi@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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* BSD LICENSE
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*
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* Copyright(c) 2013 - 2014 Intel Corporation. All rights reserved.
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* Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
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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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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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 <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 <net/bpf.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_config.h>
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#include <dev/iwm/if_iwm_debug.h>
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#include <dev/iwm/if_iwm_util.h>
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#include <dev/iwm/if_iwm_sf.h>
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/*
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* Aging and idle timeouts for the different possible scenarios
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* in default configuration
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*/
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static const uint32_t
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sf_full_timeout_def[IWM_SF_NUM_SCENARIO][IWM_SF_NUM_TIMEOUT_TYPES] = {
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{
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htole32(IWM_SF_SINGLE_UNICAST_AGING_TIMER_DEF),
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htole32(IWM_SF_SINGLE_UNICAST_IDLE_TIMER_DEF)
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},
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{
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htole32(IWM_SF_AGG_UNICAST_AGING_TIMER_DEF),
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htole32(IWM_SF_AGG_UNICAST_IDLE_TIMER_DEF)
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},
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{
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htole32(IWM_SF_MCAST_AGING_TIMER_DEF),
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htole32(IWM_SF_MCAST_IDLE_TIMER_DEF)
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},
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{
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htole32(IWM_SF_BA_AGING_TIMER_DEF),
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htole32(IWM_SF_BA_IDLE_TIMER_DEF)
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},
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{
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htole32(IWM_SF_TX_RE_AGING_TIMER_DEF),
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htole32(IWM_SF_TX_RE_IDLE_TIMER_DEF)
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},
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};
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/*
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* Aging and idle timeouts for the different possible scenarios
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* in single BSS MAC configuration.
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*/
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static const uint32_t
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sf_full_timeout[IWM_SF_NUM_SCENARIO][IWM_SF_NUM_TIMEOUT_TYPES] = {
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{
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htole32(IWM_SF_SINGLE_UNICAST_AGING_TIMER),
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htole32(IWM_SF_SINGLE_UNICAST_IDLE_TIMER)
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},
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{
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htole32(IWM_SF_AGG_UNICAST_AGING_TIMER),
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htole32(IWM_SF_AGG_UNICAST_IDLE_TIMER)
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},
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{
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htole32(IWM_SF_MCAST_AGING_TIMER),
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htole32(IWM_SF_MCAST_IDLE_TIMER)
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},
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{
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htole32(IWM_SF_BA_AGING_TIMER),
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htole32(IWM_SF_BA_IDLE_TIMER)
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},
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{
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htole32(IWM_SF_TX_RE_AGING_TIMER),
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htole32(IWM_SF_TX_RE_IDLE_TIMER)
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},
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};
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static void
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iwm_mvm_fill_sf_command(struct iwm_softc *sc, struct iwm_sf_cfg_cmd *sf_cmd,
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struct ieee80211_node *ni)
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{
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int i, j, watermark;
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sf_cmd->watermark[IWM_SF_LONG_DELAY_ON] = htole32(IWM_SF_W_MARK_SCAN);
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/*
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* If we are in association flow - check antenna configuration
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* capabilities of the AP station, and choose the watermark accordingly.
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*/
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if (ni) {
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if (ni->ni_flags & IEEE80211_NODE_HT) {
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watermark = IWM_SF_W_MARK_SISO;
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} else {
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watermark = IWM_SF_W_MARK_LEGACY;
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}
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/* default watermark value for unassociated mode. */
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} else {
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watermark = IWM_SF_W_MARK_MIMO2;
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}
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sf_cmd->watermark[IWM_SF_FULL_ON] = htole32(watermark);
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for (i = 0; i < IWM_SF_NUM_SCENARIO; i++) {
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for (j = 0; j < IWM_SF_NUM_TIMEOUT_TYPES; j++) {
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sf_cmd->long_delay_timeouts[i][j] =
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htole32(IWM_SF_LONG_DELAY_AGING_TIMER);
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}
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}
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if (ni) {
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_Static_assert(sizeof(sf_full_timeout) == sizeof(uint32_t) *
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IWM_SF_NUM_SCENARIO * IWM_SF_NUM_TIMEOUT_TYPES,
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"sf_full_timeout has wrong size");
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memcpy(sf_cmd->full_on_timeouts, sf_full_timeout,
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sizeof(sf_full_timeout));
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} else {
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_Static_assert(sizeof(sf_full_timeout_def) == sizeof(uint32_t) *
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IWM_SF_NUM_SCENARIO * IWM_SF_NUM_TIMEOUT_TYPES,
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"sf_full_timeout_def has wrong size");
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memcpy(sf_cmd->full_on_timeouts, sf_full_timeout_def,
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sizeof(sf_full_timeout_def));
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}
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}
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static int
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iwm_mvm_sf_config(struct iwm_softc *sc, struct ieee80211_node *ni,
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enum iwm_sf_state new_state)
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{
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struct iwm_sf_cfg_cmd sf_cmd = {
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.state = htole32(new_state),
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};
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int ret = 0;
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#ifdef notyet /* only relevant for sdio variants */
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if (sc->cfg->disable_dummy_notification)
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sf_cmd.state |= htole32(IWM_SF_CFG_DUMMY_NOTIF_OFF);
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#endif
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/*
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* If an associated AP sta changed its antenna configuration, the state
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* will remain FULL_ON but SF parameters need to be reconsidered.
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*/
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if (new_state != IWM_SF_FULL_ON && sc->sf_state == new_state)
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return 0;
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switch (new_state) {
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case IWM_SF_UNINIT:
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iwm_mvm_fill_sf_command(sc, &sf_cmd, NULL);
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break;
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case IWM_SF_FULL_ON:
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iwm_mvm_fill_sf_command(sc, &sf_cmd, ni);
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break;
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case IWM_SF_INIT_OFF:
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iwm_mvm_fill_sf_command(sc, &sf_cmd, NULL);
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break;
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default:
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device_printf(sc->sc_dev,
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"Invalid state: %d. not sending Smart Fifo cmd\n",
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new_state);
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return EINVAL;
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}
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ret = iwm_mvm_send_cmd_pdu(sc, IWM_REPLY_SF_CFG_CMD, IWM_CMD_ASYNC,
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sizeof(sf_cmd), &sf_cmd);
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if (!ret)
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sc->sf_state = new_state;
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return ret;
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}
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/*
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* Update Smart fifo:
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* Count bound interfaces that are not to be removed, ignoring p2p devices,
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* and set new state accordingly.
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*/
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int
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iwm_mvm_sf_update(struct iwm_softc *sc, struct ieee80211vap *changed_vif,
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boolean_t remove_vif)
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{
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enum iwm_sf_state new_state;
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struct ieee80211_node *ni = NULL;
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int num_active_macs = 0;
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/* If changed_vif exists and is not to be removed, add to the count */
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if (changed_vif && !remove_vif)
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num_active_macs++;
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switch (num_active_macs) {
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case 0:
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/* If there are no active macs - change state to SF_INIT_OFF */
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new_state = IWM_SF_INIT_OFF;
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break;
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case 1:
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if (!changed_vif)
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return EINVAL;
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ni = changed_vif->iv_bss;
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if (ni != NULL && IWM_NODE(ni)->in_assoc &&
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changed_vif->iv_dtim_period) {
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new_state = IWM_SF_FULL_ON;
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} else {
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new_state = IWM_SF_INIT_OFF;
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}
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break;
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default:
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/* If there are multiple active macs - change to SF_UNINIT */
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new_state = IWM_SF_UNINIT;
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}
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return iwm_mvm_sf_config(sc, ni, new_state);
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}
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