aed7d9ac18
Supporting 8K A-MSDU means that we need to allocate order 1 pages for every Rx packet. Even when there is no traffic. This adds stress on the memory manager. The handling of compound pages is also less trivial for the memory manager and not using them will make the allocation code run faster although I didn't really measure. Eric also pointed out that having huge buffers with little data in them is not very nice towards the TCP stack since the truesize of the skb is huge. This doesn't allow TCP to have a big Rx window. See https://patchwork.kernel.org/patch/2167711/ for details. Note that very few vendors will actually send A-MSDU. Disable this feature by default. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
127 lines
4.5 KiB
C
127 lines
4.5 KiB
C
/******************************************************************************
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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 LICENSE.GPL.
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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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* 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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#ifndef __iwl_modparams_h__
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#define __iwl_modparams_h__
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#include <linux/types.h>
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#include <linux/spinlock.h>
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#include <linux/gfp.h>
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#include <net/mac80211.h>
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extern struct iwl_mod_params iwlwifi_mod_params;
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enum iwl_power_level {
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IWL_POWER_INDEX_1,
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IWL_POWER_INDEX_2,
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IWL_POWER_INDEX_3,
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IWL_POWER_INDEX_4,
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IWL_POWER_INDEX_5,
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IWL_POWER_NUM
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};
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#define IWL_DISABLE_HT_ALL BIT(0)
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#define IWL_DISABLE_HT_TXAGG BIT(1)
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#define IWL_DISABLE_HT_RXAGG BIT(2)
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/**
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* struct iwl_mod_params
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*
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* Holds the module parameters
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*
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* @sw_crypto: using hardware encryption, default = 0
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* @disable_11n: disable 11n capabilities, default = 0,
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* use IWL_DISABLE_HT_* constants
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* @amsdu_size_8K: enable 8K amsdu size, default = 0
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* @restart_fw: restart firmware, default = 1
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* @plcp_check: enable plcp health check, default = true
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* @wd_disable: enable stuck queue check, default = 0
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* @bt_coex_active: enable bt coex, default = true
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* @led_mode: system default, default = 0
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* @power_save: disable power save, default = false
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* @power_level: power level, default = 1
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* @debug_level: levels are IWL_DL_*
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* @ant_coupling: antenna coupling in dB, default = 0
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* @bt_ch_announce: BT channel inhibition, default = enable
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* @auto_agg: enable agg. without check, default = true
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* @disable_5ghz: disable 5GHz capability, default = false
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*/
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struct iwl_mod_params {
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int sw_crypto;
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unsigned int disable_11n;
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int amsdu_size_8K;
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int restart_fw;
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bool plcp_check;
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int wd_disable;
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bool bt_coex_active;
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int led_mode;
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bool power_save;
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int power_level;
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u32 debug_level;
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int ant_coupling;
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bool bt_ch_announce;
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bool auto_agg;
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bool disable_5ghz;
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};
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#endif /* #__iwl_modparams_h__ */
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