2019-06-04 11:11:33 +03:00
// SPDX-License-Identifier: GPL-2.0-only
2008-09-08 19:44:28 +04:00
/*
* HT handling
*
* Copyright 2003 , Jouni Malinen < jkmaline @ cc . hut . fi >
2008-09-08 19:44:29 +04:00
* Copyright 2002 - 2005 , Instant802 Networks , Inc .
* Copyright 2005 - 2006 , Devicescape Software , Inc .
2008-09-08 19:44:28 +04:00
* Copyright 2006 - 2007 Jiri Benc < jbenc @ suse . cz >
* Copyright 2007 , Michael Wu < flamingice @ sourmilk . net >
2010-06-10 12:21:48 +04:00
* Copyright 2007 - 2010 , Intel Corporation
2017-05-27 01:27:25 +03:00
* Copyright 2017 Intel Deutschland GmbH
2021-06-18 13:41:32 +03:00
* Copyright ( c ) 2020 - 2021 Intel Corporation
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*/
# include <linux/ieee80211.h>
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# include <linux/export.h>
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# include <net/mac80211.h>
# include "ieee80211_i.h"
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# include "rate.h"
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2013-06-28 12:39:59 +04:00
static void __check_htcap_disable ( struct ieee80211_ht_cap * ht_capa ,
struct ieee80211_ht_cap * ht_capa_mask ,
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struct ieee80211_sta_ht_cap * ht_cap ,
u16 flag )
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{
__le16 le_flag = cpu_to_le16 ( flag ) ;
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if ( ht_capa_mask - > cap_info & le_flag ) {
if ( ! ( ht_capa - > cap_info & le_flag ) )
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ht_cap - > cap & = ~ flag ;
}
}
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static void __check_htcap_enable ( struct ieee80211_ht_cap * ht_capa ,
struct ieee80211_ht_cap * ht_capa_mask ,
struct ieee80211_sta_ht_cap * ht_cap ,
u16 flag )
{
__le16 le_flag = cpu_to_le16 ( flag ) ;
if ( ( ht_capa_mask - > cap_info & le_flag ) & &
( ht_capa - > cap_info & le_flag ) )
ht_cap - > cap | = flag ;
}
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void ieee80211_apply_htcap_overrides ( struct ieee80211_sub_if_data * sdata ,
struct ieee80211_sta_ht_cap * ht_cap )
{
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struct ieee80211_ht_cap * ht_capa , * ht_capa_mask ;
u8 * scaps , * smask ;
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int i ;
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if ( ! ht_cap - > ht_supported )
return ;
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switch ( sdata - > vif . type ) {
case NL80211_IFTYPE_STATION :
ht_capa = & sdata - > u . mgd . ht_capa ;
ht_capa_mask = & sdata - > u . mgd . ht_capa_mask ;
break ;
case NL80211_IFTYPE_ADHOC :
ht_capa = & sdata - > u . ibss . ht_capa ;
ht_capa_mask = & sdata - > u . ibss . ht_capa_mask ;
break ;
default :
WARN_ON_ONCE ( 1 ) ;
return ;
}
scaps = ( u8 * ) ( & ht_capa - > mcs . rx_mask ) ;
smask = ( u8 * ) ( & ht_capa_mask - > mcs . rx_mask ) ;
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/* NOTE: If you add more over-rides here, update register_hw
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* ht_capa_mod_mask logic in main . c as well .
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* And , if this method can ever change ht_cap . ht_supported , fix
* the check in ieee80211_add_ht_ie .
*/
/* check for HT over-rides, MCS rates first. */
for ( i = 0 ; i < IEEE80211_HT_MCS_MASK_LEN ; i + + ) {
u8 m = smask [ i ] ;
ht_cap - > mcs . rx_mask [ i ] & = ~ m ; /* turn off all masked bits */
/* Add back rates that are supported */
ht_cap - > mcs . rx_mask [ i ] | = ( m & scaps [ i ] ) ;
}
/* Force removal of HT-40 capabilities? */
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__check_htcap_disable ( ht_capa , ht_capa_mask , ht_cap ,
IEEE80211_HT_CAP_SUP_WIDTH_20_40 ) ;
__check_htcap_disable ( ht_capa , ht_capa_mask , ht_cap ,
IEEE80211_HT_CAP_SGI_40 ) ;
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/* Allow user to disable SGI-20 (SGI-40 is handled above) */
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__check_htcap_disable ( ht_capa , ht_capa_mask , ht_cap ,
IEEE80211_HT_CAP_SGI_20 ) ;
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/* Allow user to disable the max-AMSDU bit. */
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__check_htcap_disable ( ht_capa , ht_capa_mask , ht_cap ,
IEEE80211_HT_CAP_MAX_AMSDU ) ;
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2014-04-01 09:13:21 +04:00
/* Allow user to disable LDPC */
__check_htcap_disable ( ht_capa , ht_capa_mask , ht_cap ,
IEEE80211_HT_CAP_LDPC_CODING ) ;
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/* Allow user to enable 40 MHz intolerant bit. */
__check_htcap_enable ( ht_capa , ht_capa_mask , ht_cap ,
IEEE80211_HT_CAP_40MHZ_INTOLERANT ) ;
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/* Allow user to enable TX STBC bit */
__check_htcap_enable ( ht_capa , ht_capa_mask , ht_cap ,
IEEE80211_HT_CAP_TX_STBC ) ;
/* Allow user to configure RX STBC bits */
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if ( ht_capa_mask - > cap_info & cpu_to_le16 ( IEEE80211_HT_CAP_RX_STBC ) )
ht_cap - > cap | = le16_to_cpu ( ht_capa - > cap_info ) &
IEEE80211_HT_CAP_RX_STBC ;
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2011-11-18 23:32:00 +04:00
/* Allow user to decrease AMPDU factor */
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if ( ht_capa_mask - > ampdu_params_info &
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IEEE80211_HT_AMPDU_PARM_FACTOR ) {
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u8 n = ht_capa - > ampdu_params_info &
IEEE80211_HT_AMPDU_PARM_FACTOR ;
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if ( n < ht_cap - > ampdu_factor )
ht_cap - > ampdu_factor = n ;
}
/* Allow the user to increase AMPDU density. */
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if ( ht_capa_mask - > ampdu_params_info &
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IEEE80211_HT_AMPDU_PARM_DENSITY ) {
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u8 n = ( ht_capa - > ampdu_params_info &
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IEEE80211_HT_AMPDU_PARM_DENSITY )
> > IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT ;
if ( n > ht_cap - > ampdu_density )
ht_cap - > ampdu_density = n ;
}
}
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bool ieee80211_ht_cap_ie_to_sta_ht_cap ( struct ieee80211_sub_if_data * sdata ,
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struct ieee80211_supported_band * sband ,
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const struct ieee80211_ht_cap * ht_cap_ie ,
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struct sta_info * sta )
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{
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struct ieee80211_sta_ht_cap ht_cap , own_cap ;
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u8 ampdu_info , tx_mcs_set_cap ;
int i , max_tx_streams ;
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bool changed ;
enum ieee80211_sta_rx_bandwidth bw ;
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memset ( & ht_cap , 0 , sizeof ( ht_cap ) ) ;
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2010-07-16 15:01:24 +04:00
if ( ! ht_cap_ie | | ! sband - > ht_cap . ht_supported )
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goto apply ;
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ht_cap . ht_supported = true ;
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own_cap = sband - > ht_cap ;
/*
* If user has specified capability over - rides , take care
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* of that if the station we ' re setting up is the AP or TDLS peer that
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* we advertised a restricted capability set to . Override
* our own capabilities and then use those below .
*/
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if ( sdata - > vif . type = = NL80211_IFTYPE_STATION | |
sdata - > vif . type = = NL80211_IFTYPE_ADHOC )
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ieee80211_apply_htcap_overrides ( sdata , & own_cap ) ;
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/*
* The bits listed in this expression should be
* the same for the peer and us , if the station
* advertises more then we can ' t use those thus
* we mask them out .
*/
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ht_cap . cap = le16_to_cpu ( ht_cap_ie - > cap_info ) &
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( own_cap . cap | ~ ( IEEE80211_HT_CAP_LDPC_CODING |
IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
IEEE80211_HT_CAP_GRN_FLD |
IEEE80211_HT_CAP_SGI_20 |
IEEE80211_HT_CAP_SGI_40 |
IEEE80211_HT_CAP_DSSSCCK40 ) ) ;
2012-12-28 18:01:57 +04:00
2009-12-17 15:55:48 +03:00
/*
* The STBC bits are asymmetric - - if we don ' t have
* TX then mask out the peer ' s RX and vice versa .
*/
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if ( ! ( own_cap . cap & IEEE80211_HT_CAP_TX_STBC ) )
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ht_cap . cap & = ~ IEEE80211_HT_CAP_RX_STBC ;
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if ( ! ( own_cap . cap & IEEE80211_HT_CAP_RX_STBC ) )
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ht_cap . cap & = ~ IEEE80211_HT_CAP_TX_STBC ;
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2008-10-14 18:58:37 +04:00
ampdu_info = ht_cap_ie - > ampdu_params_info ;
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ht_cap . ampdu_factor =
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ampdu_info & IEEE80211_HT_AMPDU_PARM_FACTOR ;
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ht_cap . ampdu_density =
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( ampdu_info & IEEE80211_HT_AMPDU_PARM_DENSITY ) > > 2 ;
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2008-10-09 14:13:49 +04:00
/* own MCS TX capabilities */
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tx_mcs_set_cap = own_cap . mcs . tx_params ;
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2011-02-25 14:24:10 +03:00
/* Copy peer MCS TX capabilities, the driver might need them. */
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ht_cap . mcs . tx_params = ht_cap_ie - > mcs . tx_params ;
2011-02-25 14:24:10 +03:00
2008-10-09 14:13:49 +04:00
/* can we TX with MCS rates? */
if ( ! ( tx_mcs_set_cap & IEEE80211_HT_MCS_TX_DEFINED ) )
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goto apply ;
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/* Counting from 0, therefore +1 */
if ( tx_mcs_set_cap & IEEE80211_HT_MCS_TX_RX_DIFF )
max_tx_streams =
( ( tx_mcs_set_cap & IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK )
> > IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT ) + 1 ;
else
max_tx_streams = IEEE80211_HT_MCS_TX_MAX_STREAMS ;
/*
2011-02-25 14:24:10 +03:00
* 802.11 n - 2009 20.3 .5 / 20.6 says :
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* - indices 0 to 7 and 32 are single spatial stream
* - 8 to 31 are multiple spatial streams using equal modulation
* [ 8. .15 for two streams , 16. .23 for three and 24. .31 for four ]
* - remainder are multiple spatial streams using unequal modulation
*/
for ( i = 0 ; i < max_tx_streams ; i + + )
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ht_cap . mcs . rx_mask [ i ] =
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own_cap . mcs . rx_mask [ i ] & ht_cap_ie - > mcs . rx_mask [ i ] ;
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if ( tx_mcs_set_cap & IEEE80211_HT_MCS_TX_UNEQUAL_MODULATION )
for ( i = IEEE80211_HT_MCS_UNEQUAL_MODULATION_START_BYTE ;
i < IEEE80211_HT_MCS_MASK_LEN ; i + + )
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ht_cap . mcs . rx_mask [ i ] =
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own_cap . mcs . rx_mask [ i ] &
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ht_cap_ie - > mcs . rx_mask [ i ] ;
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/* handle MCS rate 32 too */
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if ( own_cap . mcs . rx_mask [ 32 / 8 ] & ht_cap_ie - > mcs . rx_mask [ 32 / 8 ] & 1 )
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ht_cap . mcs . rx_mask [ 32 / 8 ] | = 1 ;
2011-11-18 23:32:00 +04:00
2014-07-17 18:14:27 +04:00
/* set Rx highest rate */
ht_cap . mcs . rx_highest = ht_cap_ie - > mcs . rx_highest ;
2015-12-13 16:41:05 +03:00
if ( ht_cap . cap & IEEE80211_HT_CAP_MAX_AMSDU )
sta - > sta . max_amsdu_len = IEEE80211_MAX_MPDU_LEN_HT_7935 ;
else
sta - > sta . max_amsdu_len = IEEE80211_MAX_MPDU_LEN_HT_3839 ;
2013-02-07 14:47:44 +04:00
apply :
mac80211: prepare sta handling for MLO support
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>
2022-04-04 18:41:23 +03:00
changed = memcmp ( & sta - > sta . deflink . ht_cap , & ht_cap , sizeof ( ht_cap ) ) ;
2013-02-07 14:47:44 +04:00
mac80211: prepare sta handling for MLO support
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>
2022-04-04 18:41:23 +03:00
memcpy ( & sta - > sta . deflink . ht_cap , & ht_cap , sizeof ( ht_cap ) ) ;
2013-02-07 14:47:44 +04:00
switch ( sdata - > vif . bss_conf . chandef . width ) {
default :
WARN_ON_ONCE ( 1 ) ;
2020-07-07 23:45:48 +03:00
fallthrough ;
2013-02-07 14:47:44 +04:00
case NL80211_CHAN_WIDTH_20_NOHT :
case NL80211_CHAN_WIDTH_20 :
bw = IEEE80211_STA_RX_BW_20 ;
break ;
case NL80211_CHAN_WIDTH_40 :
case NL80211_CHAN_WIDTH_80 :
case NL80211_CHAN_WIDTH_80P80 :
case NL80211_CHAN_WIDTH_160 :
bw = ht_cap . cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 ?
IEEE80211_STA_RX_BW_40 : IEEE80211_STA_RX_BW_20 ;
break ;
}
mac80211: prepare sta handling for MLO support
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>
2022-04-04 18:41:23 +03:00
sta - > sta . deflink . bandwidth = bw ;
2013-02-07 14:47:44 +04:00
mac80211: prepare sta handling for MLO support
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>
2022-04-04 18:41:23 +03:00
sta - > deflink . cur_max_bandwidth =
2012-12-27 21:55:36 +04:00
ht_cap . cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 ?
IEEE80211_STA_RX_BW_40 : IEEE80211_STA_RX_BW_20 ;
2020-01-31 14:12:53 +03:00
if ( sta - > sdata - > vif . type = = NL80211_IFTYPE_AP | |
sta - > sdata - > vif . type = = NL80211_IFTYPE_AP_VLAN ) {
enum ieee80211_smps_mode smps_mode ;
switch ( ( ht_cap . cap & IEEE80211_HT_CAP_SM_PS )
> > IEEE80211_HT_CAP_SM_PS_SHIFT ) {
case WLAN_HT_CAP_SM_PS_INVALID :
case WLAN_HT_CAP_SM_PS_STATIC :
smps_mode = IEEE80211_SMPS_STATIC ;
break ;
case WLAN_HT_CAP_SM_PS_DYNAMIC :
smps_mode = IEEE80211_SMPS_DYNAMIC ;
break ;
case WLAN_HT_CAP_SM_PS_DISABLED :
smps_mode = IEEE80211_SMPS_OFF ;
break ;
}
if ( smps_mode ! = sta - > sta . smps_mode )
changed = true ;
sta - > sta . smps_mode = smps_mode ;
} else {
sta - > sta . smps_mode = IEEE80211_SMPS_OFF ;
2013-02-12 17:21:00 +04:00
}
2013-02-07 14:47:44 +04:00
return changed ;
2008-10-14 18:58:37 +04:00
}
2012-07-18 15:31:31 +04:00
void ieee80211_sta_tear_down_BA_sessions ( struct sta_info * sta ,
enum ieee80211_agg_stop_reason reason )
2008-09-09 16:42:50 +04:00
{
2009-02-10 23:25:46 +03:00
int i ;
2008-09-09 16:42:50 +04:00
2017-09-06 17:18:33 +03:00
mutex_lock ( & sta - > ampdu_mlme . mtx ) ;
2017-12-09 23:10:10 +03:00
for ( i = 0 ; i < IEEE80211_NUM_TIDS ; i + + )
2017-09-06 17:18:33 +03:00
___ieee80211_stop_rx_ba_session ( sta , i , WLAN_BACK_RECIPIENT ,
WLAN_REASON_QSTA_LEAVE_QBSS ,
reason ! = AGG_STOP_DESTROY_STA & &
reason ! = AGG_STOP_PEER_REQUEST ) ;
2017-05-27 01:27:25 +03:00
2017-10-29 12:51:09 +03:00
for ( i = 0 ; i < IEEE80211_NUM_TIDS ; i + + )
___ieee80211_stop_tx_ba_session ( sta , i , reason ) ;
2017-12-09 23:10:10 +03:00
mutex_unlock ( & sta - > ampdu_mlme . mtx ) ;
2017-10-29 12:51:09 +03:00
2017-09-06 17:32:40 +03:00
/*
* In case the tear down is part of a reconfigure due to HW restart
* request , it is possible that the low level driver requested to stop
* the BA session , so handle it to properly clean tid_tx data .
*/
2018-05-14 23:33:34 +03:00
if ( reason = = AGG_STOP_DESTROY_STA ) {
cancel_work_sync ( & sta - > ampdu_mlme . work ) ;
2017-09-06 17:32:40 +03:00
2018-05-14 23:33:34 +03:00
mutex_lock ( & sta - > ampdu_mlme . mtx ) ;
for ( i = 0 ; i < IEEE80211_NUM_TIDS ; i + + ) {
struct tid_ampdu_tx * tid_tx =
rcu_dereference_protected_tid_tx ( sta , i ) ;
2017-09-06 17:32:40 +03:00
2018-05-14 23:33:34 +03:00
if ( ! tid_tx )
continue ;
if ( test_and_clear_bit ( HT_AGG_STATE_STOP_CB , & tid_tx - > state ) )
ieee80211_stop_tx_ba_cb ( sta , i , tid_tx ) ;
}
mutex_unlock ( & sta - > ampdu_mlme . mtx ) ;
2017-09-06 17:32:40 +03:00
}
2008-09-09 16:42:50 +04:00
}
2010-06-10 12:21:43 +04:00
void ieee80211_ba_session_work ( struct work_struct * work )
{
struct sta_info * sta =
container_of ( work , struct sta_info , ampdu_mlme . work ) ;
struct tid_ampdu_tx * tid_tx ;
2018-05-14 23:33:34 +03:00
bool blocked ;
2010-06-10 12:21:43 +04:00
int tid ;
2018-05-14 23:33:34 +03:00
/* When this flag is set, new sessions should be blocked. */
blocked = test_sta_flag ( sta , WLAN_STA_BLOCK_BA ) ;
2010-06-10 12:21:43 +04:00
2010-06-10 12:21:46 +04:00
mutex_lock ( & sta - > ampdu_mlme . mtx ) ;
2012-11-15 02:22:21 +04:00
for ( tid = 0 ; tid < IEEE80211_NUM_TIDS ; tid + + ) {
2010-06-10 12:21:44 +04:00
if ( test_and_clear_bit ( tid , sta - > ampdu_mlme . tid_rx_timer_expired ) )
___ieee80211_stop_rx_ba_session (
sta , tid , WLAN_BACK_RECIPIENT ,
2010-10-05 21:37:40 +04:00
WLAN_REASON_QSTA_TIMEOUT , true ) ;
2010-06-10 12:21:44 +04:00
2011-05-22 17:10:21 +04:00
if ( test_and_clear_bit ( tid ,
sta - > ampdu_mlme . tid_rx_stop_requested ) )
___ieee80211_stop_rx_ba_session (
sta , tid , WLAN_BACK_RECIPIENT ,
WLAN_REASON_UNSPECIFIED , true ) ;
2018-05-14 23:33:34 +03:00
if ( ! blocked & &
test_and_clear_bit ( tid ,
2017-05-30 17:34:46 +03:00
sta - > ampdu_mlme . tid_rx_manage_offl ) )
2017-09-06 16:01:42 +03:00
___ieee80211_start_rx_ba_session ( sta , 0 , 0 , 0 , 1 , tid ,
2018-06-18 23:39:29 +03:00
IEEE80211_MAX_AMPDU_BUF_HT ,
2019-07-29 13:45:12 +03:00
false , true , NULL ) ;
2017-05-30 17:34:46 +03:00
if ( test_and_clear_bit ( tid + IEEE80211_NUM_TIDS ,
sta - > ampdu_mlme . tid_rx_manage_offl ) )
___ieee80211_stop_rx_ba_session (
sta , tid , WLAN_BACK_RECIPIENT ,
0 , false ) ;
2013-06-13 01:08:44 +04:00
spin_lock_bh ( & sta - > lock ) ;
2011-05-13 15:35:40 +04:00
tid_tx = sta - > ampdu_mlme . tid_start_tx [ tid ] ;
2018-05-14 23:33:34 +03:00
if ( ! blocked & & tid_tx ) {
2011-05-13 15:35:40 +04:00
/*
* Assign it over to the normal tid_tx array
* where it " goes live " .
*/
sta - > ampdu_mlme . tid_start_tx [ tid ] = NULL ;
/* could there be a race? */
if ( sta - > ampdu_mlme . tid_tx [ tid ] )
kfree ( tid_tx ) ;
else
ieee80211_assign_tid_tx ( sta , tid , tid_tx ) ;
spin_unlock_bh ( & sta - > lock ) ;
2010-06-10 12:21:43 +04:00
ieee80211_tx_ba_session_handle_start ( sta , tid ) ;
2011-05-13 15:35:40 +04:00
continue ;
}
2013-06-13 01:08:44 +04:00
spin_unlock_bh ( & sta - > lock ) ;
2011-05-13 15:35:40 +04:00
2011-05-13 16:15:49 +04:00
tid_tx = rcu_dereference_protected_tid_tx ( sta , tid ) ;
2017-05-27 01:27:25 +03:00
if ( ! tid_tx )
continue ;
2018-05-14 23:33:34 +03:00
if ( ! blocked & &
test_and_clear_bit ( HT_AGG_STATE_START_CB , & tid_tx - > state ) )
2017-05-27 01:27:25 +03:00
ieee80211_start_tx_ba_cb ( sta , tid , tid_tx ) ;
if ( test_and_clear_bit ( HT_AGG_STATE_WANT_STOP , & tid_tx - > state ) )
2010-06-10 12:21:43 +04:00
___ieee80211_stop_tx_ba_session ( sta , tid ,
2012-07-18 15:31:31 +04:00
AGG_STOP_LOCAL_REQUEST ) ;
2017-05-27 01:27:25 +03:00
if ( test_and_clear_bit ( HT_AGG_STATE_STOP_CB , & tid_tx - > state ) )
ieee80211_stop_tx_ba_cb ( sta , tid , tid_tx ) ;
2010-06-10 12:21:43 +04:00
}
2010-06-10 12:21:48 +04:00
mutex_unlock ( & sta - > ampdu_mlme . mtx ) ;
2010-06-10 12:21:43 +04:00
}
2009-02-10 23:25:46 +03:00
void ieee80211_send_delba ( struct ieee80211_sub_if_data * sdata ,
const u8 * da , u16 tid ,
u16 initiator , u16 reason_code )
2008-09-08 19:44:28 +04:00
{
struct ieee80211_local * local = sdata - > local ;
struct sk_buff * skb ;
struct ieee80211_mgmt * mgmt ;
u16 params ;
skb = dev_alloc_skb ( sizeof ( * mgmt ) + local - > hw . extra_tx_headroom ) ;
2011-08-30 01:17:31 +04:00
if ( ! skb )
2008-09-08 19:44:28 +04:00
return ;
skb_reserve ( skb , local - > hw . extra_tx_headroom ) ;
networking: convert many more places to skb_put_zero()
There were many places that my previous spatch didn't find,
as pointed out by yuan linyu in various patches.
The following spatch found many more and also removes the
now unnecessary casts:
@@
identifier p, p2;
expression len;
expression skb;
type t, t2;
@@
(
-p = skb_put(skb, len);
+p = skb_put_zero(skb, len);
|
-p = (t)skb_put(skb, len);
+p = skb_put_zero(skb, len);
)
... when != p
(
p2 = (t2)p;
-memset(p2, 0, len);
|
-memset(p, 0, len);
)
@@
type t, t2;
identifier p, p2;
expression skb;
@@
t *p;
...
(
-p = skb_put(skb, sizeof(t));
+p = skb_put_zero(skb, sizeof(t));
|
-p = (t *)skb_put(skb, sizeof(t));
+p = skb_put_zero(skb, sizeof(t));
)
... when != p
(
p2 = (t2)p;
-memset(p2, 0, sizeof(*p));
|
-memset(p, 0, sizeof(*p));
)
@@
expression skb, len;
@@
-memset(skb_put(skb, len), 0, len);
+skb_put_zero(skb, len);
Apply it to the tree (with one manual fixup to keep the
comment in vxlan.c, which spatch removed.)
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-16 15:29:19 +03:00
mgmt = skb_put_zero ( skb , 24 ) ;
2008-09-08 19:44:28 +04:00
memcpy ( mgmt - > da , da , ETH_ALEN ) ;
2009-11-25 19:46:19 +03:00
memcpy ( mgmt - > sa , sdata - > vif . addr , ETH_ALEN ) ;
2009-02-10 23:25:47 +03:00
if ( sdata - > vif . type = = NL80211_IFTYPE_AP | |
2011-10-27 01:47:29 +04:00
sdata - > vif . type = = NL80211_IFTYPE_AP_VLAN | |
sdata - > vif . type = = NL80211_IFTYPE_MESH_POINT )
2009-11-25 19:46:19 +03:00
memcpy ( mgmt - > bssid , sdata - > vif . addr , ETH_ALEN ) ;
2009-02-15 14:44:28 +03:00
else if ( sdata - > vif . type = = NL80211_IFTYPE_STATION )
memcpy ( mgmt - > bssid , sdata - > u . mgd . bssid , ETH_ALEN ) ;
2011-11-30 19:56:34 +04:00
else if ( sdata - > vif . type = = NL80211_IFTYPE_ADHOC )
memcpy ( mgmt - > bssid , sdata - > u . ibss . bssid , ETH_ALEN ) ;
2009-02-15 14:44:28 +03:00
2008-09-08 19:44:28 +04:00
mgmt - > frame_control = cpu_to_le16 ( IEEE80211_FTYPE_MGMT |
IEEE80211_STYPE_ACTION ) ;
skb_put ( skb , 1 + sizeof ( mgmt - > u . action . u . delba ) ) ;
mgmt - > u . action . category = WLAN_CATEGORY_BACK ;
mgmt - > u . action . u . delba . action_code = WLAN_ACTION_DELBA ;
params = ( u16 ) ( initiator < < 11 ) ; /* bit 11 initiator */
params | = ( u16 ) ( tid < < 12 ) ; /* bit 15:12 TID number */
mgmt - > u . action . u . delba . params = cpu_to_le16 ( params ) ;
mgmt - > u . action . u . delba . reason_code = cpu_to_le16 ( reason_code ) ;
mac80211: send {ADD,DEL}BA on AC_VO like other mgmt frames, as per spec
ATM, {ADD,DEL}BA and BAR frames are sent on the AC matching the TID of
the BA parameters. In the discussion [1] about this patch, Johannes
recalled that it fixed some races with the DELBA and indeed this
behavior was introduced in [2].
While [2] is right for the BARs, the part queueing the {ADD,DEL}BAs on
their BA params TID AC violates the spec and is more a workaround for
some drivers. Helmut expressed some concerns wrt such drivers, in
particular DELBAs in rt2x00.
ATM, DELBAs are sent after a driver has called (hence "purposely")
ieee80211_start_tx_ba_cb_irqsafe and Johannes and Emmanuel gave some
details wrt intentions behind the split of the IEEE80211_AMPDU_TX_STOP_*
given to the driver ampdu_action supposed to call this function, which
could prove handy to people trying to do the right thing in faulty
drivers (if their fw/hw don't get in their way).
[1] http://mid.gmane.org/1390391564-18481-1-git-send-email-karl.beldan@gmail.com
[2] Commit: cf6bb79ad828 ("mac80211: Use appropriate TID for sending BAR, ADDBA and DELBA frames")
Signed-off-by: Karl Beldan <karl.beldan@rivierawaves.com>
Cc: Helmut Schaa <helmut.schaa@googlemail.com>
Cc: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-01-23 23:06:34 +04:00
ieee80211_tx_skb ( sdata , skb ) ;
2008-09-08 19:44:28 +04:00
}
2008-09-09 16:42:50 +04:00
void ieee80211_process_delba ( struct ieee80211_sub_if_data * sdata ,
struct sta_info * sta ,
struct ieee80211_mgmt * mgmt , size_t len )
{
u16 tid , params ;
u16 initiator ;
params = le16_to_cpu ( mgmt - > u . action . u . delba . params ) ;
tid = ( params & IEEE80211_DELBA_PARAM_TID_MASK ) > > 12 ;
initiator = ( params & IEEE80211_DELBA_PARAM_INITIATOR_MASK ) > > 11 ;
2012-06-22 13:29:50 +04:00
ht_dbg_ratelimited ( sdata , " delba from %pM (%s) tid %d reason code %d \n " ,
mgmt - > sa , initiator ? " initiator " : " recipient " ,
tid ,
le16_to_cpu ( mgmt - > u . action . u . delba . reason_code ) ) ;
2008-09-09 16:42:50 +04:00
if ( initiator = = WLAN_BACK_INITIATOR )
2010-10-05 21:37:40 +04:00
__ieee80211_stop_rx_ba_session ( sta , tid , WLAN_BACK_INITIATOR , 0 ,
true ) ;
2010-06-10 12:21:39 +04:00
else
2012-07-18 15:31:31 +04:00
__ieee80211_stop_tx_ba_session ( sta , tid , AGG_STOP_PEER_REQUEST ) ;
2008-09-09 16:42:50 +04:00
}
2009-12-01 15:37:02 +03:00
2018-03-27 16:46:16 +03:00
enum nl80211_smps_mode
ieee80211_smps_mode_to_smps_mode ( enum ieee80211_smps_mode smps )
{
switch ( smps ) {
case IEEE80211_SMPS_OFF :
return NL80211_SMPS_OFF ;
case IEEE80211_SMPS_STATIC :
return NL80211_SMPS_STATIC ;
case IEEE80211_SMPS_DYNAMIC :
return NL80211_SMPS_DYNAMIC ;
default :
return NL80211_SMPS_OFF ;
}
}
2009-12-01 15:37:02 +03:00
int ieee80211_send_smps_action ( struct ieee80211_sub_if_data * sdata ,
enum ieee80211_smps_mode smps , const u8 * da ,
const u8 * bssid )
{
struct ieee80211_local * local = sdata - > local ;
struct sk_buff * skb ;
struct ieee80211_mgmt * action_frame ;
/* 27 = header + category + action + smps mode */
skb = dev_alloc_skb ( 27 + local - > hw . extra_tx_headroom ) ;
if ( ! skb )
return - ENOMEM ;
skb_reserve ( skb , local - > hw . extra_tx_headroom ) ;
networking: make skb_put & friends return void pointers
It seems like a historic accident that these return unsigned char *,
and in many places that means casts are required, more often than not.
Make these functions (skb_put, __skb_put and pskb_put) return void *
and remove all the casts across the tree, adding a (u8 *) cast only
where the unsigned char pointer was used directly, all done with the
following spatch:
@@
expression SKB, LEN;
typedef u8;
identifier fn = { skb_put, __skb_put };
@@
- *(fn(SKB, LEN))
+ *(u8 *)fn(SKB, LEN)
@@
expression E, SKB, LEN;
identifier fn = { skb_put, __skb_put };
type T;
@@
- E = ((T *)(fn(SKB, LEN)))
+ E = fn(SKB, LEN)
which actually doesn't cover pskb_put since there are only three
users overall.
A handful of stragglers were converted manually, notably a macro in
drivers/isdn/i4l/isdn_bsdcomp.c and, oddly enough, one of the many
instances in net/bluetooth/hci_sock.c. In the former file, I also
had to fix one whitespace problem spatch introduced.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-16 15:29:21 +03:00
action_frame = skb_put ( skb , 27 ) ;
2009-12-01 15:37:02 +03:00
memcpy ( action_frame - > da , da , ETH_ALEN ) ;
memcpy ( action_frame - > sa , sdata - > dev - > dev_addr , ETH_ALEN ) ;
memcpy ( action_frame - > bssid , bssid , ETH_ALEN ) ;
action_frame - > frame_control = cpu_to_le16 ( IEEE80211_FTYPE_MGMT |
IEEE80211_STYPE_ACTION ) ;
action_frame - > u . action . category = WLAN_CATEGORY_HT ;
action_frame - > u . action . u . ht_smps . action = WLAN_HT_ACTION_SMPS ;
switch ( smps ) {
case IEEE80211_SMPS_AUTOMATIC :
case IEEE80211_SMPS_NUM_MODES :
WARN_ON ( 1 ) ;
2020-07-07 23:45:48 +03:00
fallthrough ;
2009-12-01 15:37:02 +03:00
case IEEE80211_SMPS_OFF :
action_frame - > u . action . u . ht_smps . smps_control =
WLAN_HT_SMPS_CONTROL_DISABLED ;
break ;
case IEEE80211_SMPS_STATIC :
action_frame - > u . action . u . ht_smps . smps_control =
WLAN_HT_SMPS_CONTROL_STATIC ;
break ;
case IEEE80211_SMPS_DYNAMIC :
action_frame - > u . action . u . ht_smps . smps_control =
WLAN_HT_SMPS_CONTROL_DYNAMIC ;
break ;
}
/* we'll do more on status of this frame */
IEEE80211_SKB_CB ( skb ) - > flags | = IEEE80211_TX_CTL_REQ_TX_STATUS ;
ieee80211_tx_skb ( sdata , skb ) ;
return 0 ;
}
2010-08-05 19:05:55 +04:00
2013-10-01 17:45:43 +04:00
void ieee80211_request_smps_mgd_work ( struct work_struct * work )
2010-08-05 19:05:55 +04:00
{
struct ieee80211_sub_if_data * sdata =
container_of ( work , struct ieee80211_sub_if_data ,
u . mgd . request_smps_work ) ;
2013-05-10 14:32:47 +04:00
sdata_lock ( sdata ) ;
2013-10-01 17:45:43 +04:00
__ieee80211_request_smps_mgd ( sdata , sdata - > u . mgd . driver_smps_mode ) ;
sdata_unlock ( sdata ) ;
}
2010-08-05 19:05:55 +04:00
void ieee80211_request_smps ( struct ieee80211_vif * vif ,
enum ieee80211_smps_mode smps_mode )
{
struct ieee80211_sub_if_data * sdata = vif_to_sdata ( vif ) ;
2021-06-18 13:41:32 +03:00
if ( WARN_ON_ONCE ( vif - > type ! = NL80211_IFTYPE_STATION ) )
2010-08-05 19:05:55 +04:00
return ;
2021-06-18 13:41:32 +03:00
if ( sdata - > u . mgd . driver_smps_mode = = smps_mode )
return ;
sdata - > u . mgd . driver_smps_mode = smps_mode ;
ieee80211_queue_work ( & sdata - > local - > hw ,
& sdata - > u . mgd . request_smps_work ) ;
2010-08-05 19:05:55 +04:00
}
/* this might change ... don't want non-open drivers using it */
EXPORT_SYMBOL_GPL ( ieee80211_request_smps ) ;