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path: root/drivers/net/wireless/intel/iwlwifi/dvm/rs.c
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2024-05-23wifi: iwlwifi: dvm: clean up rs_get_rate() logicJohannes Berg1-13/+8
The logic here is rather convoluted - we cannot get here with lq_sta being NULL as mac80211 will (no longer) call us like that, and since I removed the rate_control_send_low() call in this function there's no longer any point in setting priv_sta to NULL either. So the only thing that remains to check is if we have actually initialized our lq_sta->drv pointer, and exit if we didn't in which case we'll use the data mac80211 already set up for the low rate usage. Reviewed-by: Luciano Coelho <luciano.coelho@intel.com> Link: https://msgid.link/20240510170500.a4cdb41825eb.Id202bcc967c32829f70ab1412f8893b6eb7f78e2@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2023-06-19wifi: iwlwifi: dvm: fix -Wunused-const-variable gcc warningDmitry Antipov1-17/+17
Fix the following gcc 13.1 warning observed with W=1: drivers/net/wireless/intel/iwlwifi/dvm/rs.c:207:39: warning: ‘iwl_rate_mcs’ defined but not used [-Wunused-const-variable=] This table is actually used in 'rs_sta_dbgfs_scale_table_read()' only if CONFIG_MAC80211_DEBUGFS is enabled, so the whole thing may be moved close to its actual use. Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru> Link: https://lore.kernel.org/r/20230619103900.300628-1-dmantipov@yandex.ru Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2023-06-19wifi: iwlwifi: add a few rate index validity checksAnjaneyulu1-3/+6
Validate index before access iwl_rate_mcs to keep rate->index inside the valid boundaries. Use MCS_0_INDEX if index is less than MCS_0_INDEX and MCS_9_INDEX if index is greater then MCS_9_INDEX. Signed-off-by: Anjaneyulu <pagadala.yesu.anjaneyulu@intel.com> Signed-off-by: Gregory Greenman <gregory.greenman@intel.com> Link: https://lore.kernel.org/r/20230614123447.79f16b3aef32.If1137f894775d6d07b78cbf3a6163ffce6399507@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-09-06wifi: mac80211: make smps_mode per-linkBenjamin Berg1-3/+3
The SMPS power save mode needs to be per-link rather than being shared for all links. As such, move it into struct ieee80211_link_sta. Signed-off-by: Benjamin Berg <benjamin.berg@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-04-11mac80211: prepare sta handling for MLO supportSriram R1-11/+11
Currently in mac80211 each STA object is represented using sta_info datastructure with the associated STA specific information and drivers access ieee80211_sta part of it. With MLO (Multi Link Operation) support being added in 802.11be standard, though the association is logically with a single Multi Link capable STA, at the physical level communication can happen via different advertised links (uniquely identified by Channel, operating class, BSSID) and hence the need to handle multiple link STA parameters within a composite sta_info object called the MLD STA. The different link STA part of MLD STA are identified using the link address which can be same or different as the MLD STA address and unique link id based on the link vif. To support extension of such a model, the sta_info datastructure is modified to hold multiple link STA objects with link specific params currently within sta_info moved to this new structure. Similarly this is done for ieee80211_sta as well which will be accessed within mac80211 as well as by drivers, hence trivial driver changes are expected to support this. For current non MLO supported drivers, only one link STA is present and link information is accessed via 'deflink' member. For MLO drivers, we still need to define the APIs etc. to get the correct link ID and access the correct part of the station info. Currently in mac80211, all link STA info are accessed directly via deflink. These will be updated to access via link pointers indexed by link id with MLO support patches, with link id being 0 for non MLO supported cases. Except for couple of macro related changes, below spatch takes care of updating mac80211 and driver code to access to the link STA info via deflink. @ieee80211_sta@ struct ieee80211_sta *s; struct sta_info *si; identifier var = {supp_rates, ht_cap, vht_cap, he_cap, he_6ghz_capa, eht_cap, rx_nss, bandwidth, txpwr}; @@ ( s-> - var + deflink.var | si->sta. - var + deflink.var ) @sta_info@ struct sta_info *si; identifier var = {gtk, pcpu_rx_stats, rx_stats, rx_stats_avg, status_stats, tx_stats, cur_max_bandwidth}; @@ ( si-> - var + deflink.var ) Signed-off-by: Sriram R <quic_srirrama@quicinc.com> Link: https://lore.kernel.org/r/1649086883-13246-1-git-send-email-quic_srirrama@quicinc.com [remove MLO-drivers notes from commit message, not clear yet; run spatch] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-10-22iwlwifi: remove contact informationJohannes Berg1-5/+0
The list address is going away, and the postal address isn't useful, remove all the contact information. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.com> Link: https://lore.kernel.org/r/iwlwifi.20211017113927.f73e3b6384cb.I967fd394995461277eafa149bb25cefd1673751e@changeid Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2020-10-08iwlwifi: rs: Demote non-compliant kernel-doc headersLee Jones1-6/+6
None of these headers attempt to document any function parameters. Fixes the following W=1 kernel build warning(s): drivers/net/wireless/intel/iwlwifi/dvm/rs.c:165: warning: cannot understand function prototype: 'const u16 expected_tpt_legacy[IWL_RATE_COUNT] = ' drivers/net/wireless/intel/iwlwifi/dvm/rs.c:329: warning: Function parameter or member 'priv' not described in 'rs_program_fix_rate' drivers/net/wireless/intel/iwlwifi/dvm/rs.c:329: warning: Function parameter or member 'lq_sta' not described in 'rs_program_fix_rate' drivers/net/wireless/intel/iwlwifi/dvm/rs.c:452: warning: Function parameter or member 'tbl' not described in 'rs_collect_tx_data' drivers/net/wireless/intel/iwlwifi/dvm/rs.c:452: warning: Function parameter or member 'scale_index' not described in 'rs_collect_tx_data' drivers/net/wireless/intel/iwlwifi/dvm/rs.c:452: warning: Function parameter or member 'attempts' not described in 'rs_collect_tx_data' drivers/net/wireless/intel/iwlwifi/dvm/rs.c:452: warning: Function parameter or member 'successes' not described in 'rs_collect_tx_data' drivers/net/wireless/intel/iwlwifi/dvm/rs.c:681: warning: Function parameter or member 'sta' not described in 'rs_use_green' drivers/net/wireless/intel/iwlwifi/dvm/rs.c:702: warning: Function parameter or member 'lq_sta' not described in 'rs_get_supported_rates' drivers/net/wireless/intel/iwlwifi/dvm/rs.c:702: warning: Function parameter or member 'hdr' not described in 'rs_get_supported_rates' drivers/net/wireless/intel/iwlwifi/dvm/rs.c:702: warning: Function parameter or member 'rate_type' not described in 'rs_get_supported_rates' drivers/net/wireless/intel/iwlwifi/dvm/rs.c:2628: warning: duplicate section name 'NOTE' drivers/net/wireless/intel/iwlwifi/dvm/rs.c:2632: warning: Function parameter or member 'priv' not described in 'rs_initialize_lq' drivers/net/wireless/intel/iwlwifi/dvm/rs.c:2632: warning: Function parameter or member 'sta' not described in 'rs_initialize_lq' drivers/net/wireless/intel/iwlwifi/dvm/rs.c:2632: warning: Function parameter or member 'lq_sta' not described in 'rs_initialize_lq' Cc: Johannes Berg <johannes.berg@intel.com> Cc: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Cc: Luca Coelho <luciano.coelho@intel.com> Cc: Intel Linux Wireless <linuxwifi@intel.com> Cc: Kalle Valo <kvalo@codeaurora.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jakub Kicinski <kuba@kernel.org> Cc: linux-wireless@vger.kernel.org Cc: netdev@vger.kernel.org Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Kalle Valo <kvalo@codeaurora.org> Link: https://lore.kernel.org/r/20200910065431.657636-3-lee.jones@linaro.org
2020-05-08iwlwifi: remove antenna_coupling module parameterEmmanuel Grumbach1-10/+1
This module parameter should not be mangled by users. This relates to a very old driver and I doubt people can really check the antenna coupling in a way that would make the BT Coexistence work better with a real value. Drop it. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.com> Link: https://lore.kernel.org/r/iwlwifi.20200424182644.6e566897ce0a.I8395a50c1c39522e542366064bff33a33009ce7b@changeid
2020-04-24mac80211: populate debugfs only after cfg80211 initJohannes Berg1-1/+1
When fixing the initialization race, we neglected to account for the fact that debugfs is initialized in wiphy_register(), and some debugfs things went missing (or rather were rerooted to the global debugfs root). Fix this by adding debugfs entries only after wiphy_register(). This requires some changes in the rate control code since it currently adds debugfs at alloc time, which can no longer be done after the reordering. Reported-by: Jouni Malinen <j@w1.fi> Reported-by: kernel test robot <rong.a.chen@intel.com> Reported-by: Hauke Mehrtens <hauke@hauke-m.de> Reported-by: Felix Fietkau <nbd@nbd.name> Cc: stable@vger.kernel.org Fixes: 52e04b4ce5d0 ("mac80211: fix race in ieee80211_register_hw()") Signed-off-by: Johannes Berg <johannes.berg@intel.com> Acked-by: Sumit Garg <sumit.garg@linaro.org> Link: https://lore.kernel.org/r/20200423111344.0e00d3346f12.Iadc76a03a55093d94391fc672e996a458702875d@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-11-20iwlwifi: dvm: excessive if in rs_bt_update_lq()Denis Efremov1-1/+1
There is no need to check 'priv->bt_ant_couple_ok' twice in rs_bt_update_lq(). The second check is always true. Thus, the expression can be simplified. Signed-off-by: Denis Efremov <efremov@linux.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2019-07-26iwlwifi: dvm: no need to check return value of debugfs_create functionsGreg Kroah-Hartman1-21/+8
When calling debugfs functions, there is no need to ever check the return value. This driver was saving the debugfs file away to be removed at a later time. However, the 80211 core would delete the whole directory that the debugfs files are created in, after it asks the driver to do the deletion, so just rely on the 80211 core to do all of the cleanup for us, making us not need to keep a pointer to the dentries around at all. This cleans up the structure of the driver data a bit and makes the code a tiny bit smaller. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20190612142658.12792-3-gregkh@linuxfoundation.org Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-06-17Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller1-12/+1
Honestly all the conflicts were simple overlapping changes, nothing really interesting to report. Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-14mac80211: call rate_control_send_low() internallyJohannes Berg1-4/+0
There's no rate control algorithm that *doesn't* want to call it internally, and calling it internally will let us modify its behaviour in the future. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-06-05treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 322Thomas Gleixner1-12/+1
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of version 2 of the gnu general public license as published by the free software foundation this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details the full gnu general public license is included in this distribution in the file called license extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 29 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190530000435.438503728@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-08-31iwlwifi: remove all occurrences of the FSF address paragraphLuca Coelho1-4/+0
The Free Software Foundation address is superfluous and causes checkpatch to issue a warning when present. Remove all paragraphs with FSF's address to prevent that. Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2018-03-27wireless: Use octal not symbolic permissionsJoe Perches1-8/+8
Prefer the direct use of octal for permissions. Done with checkpatch -f --types=SYMBOLIC_PERMS --fix-inplace and some typing. Miscellanea: o Whitespace neatening around these conversions. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-03-07iwlwifi: dvm: remove usage of txrc->max_rate_idxJohannes Berg1-1/+1
Just calculate it like mac80211 does today, so we can get rid of the calculation in mac80211 for everyone else. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2017-02-08iwlwifi: dvm: don't call << operator with a negative valueEmmanuel Grumbach1-1/+4
In https://bugzilla.kernel.org/show_bug.cgi?id=177341 Bob reported a UBSAN WARNING on rs.c. Undefined behaviour in drivers/net/wireless/intel/iwlwifi/dvm/rs.c:746:18 This because i = index - 1; for (mask = (1 << i); i >= 0; i--, mask >>= 1) is unsafe: i could be negative and hence we can call << on a negative value. This bug doesn't have any real impact since the condition of the for loop will prevent any usage of mask. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=177341 Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2017-01-26iwlwifi: dvm: make rs_tl_get_load() return voidLuca Coelho1-7/+4
The return value from this function is never used, so make it return void to avoid getting the following warning when compiling wiht W=1: /home/luca/iwlwifi/stack-dev/drivers/net/wireless/intel/iwlwifi/dvm/rs.c: In function ‘rs_tl_turn_on_agg_for_tid’: /home/luca/iwlwifi/stack-dev/drivers/net/wireless/intel/iwlwifi/dvm/rs.c:400:6: warning: variable ‘load’ set but not used [-Wunused-but-set-variable] u32 load; ^ Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2016-04-12cfg80211: remove enum ieee80211_bandJohannes Berg1-11/+11
This enum is already perfectly aliased to enum nl80211_band, and the only reason for it is that we get IEEE80211_NUM_BANDS out of it. There's no really good reason to not declare the number of bands in nl80211 though, so do that and remove the cfg80211 one. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-12-20iwlwifi: change the Intel Wireless email addressEmmanuel Grumbach1-1/+1
ilw@linux.intel.com is not available anymore. linuxwifi@intel.com should be used instead. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2015-11-18iwlwifi: move under intel vendor directoryKalle Valo1-0/+3338
Part of reorganising wireless drivers directory and Kconfig. Signed-off-by: Kalle Valo <kvalo@codeaurora.org>