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Use link and link_conf according to the link_id
provided by cfg in start_ap/stop_ap and change_beacon.
Also use them in the functions called by them.
Note that for a non MLD device, the link_id is 0,
and link[0] and link_conf[0] equal to deflink and
bss_conf respectively (what was there before).
Also, call vif_info_change for BSS related changes (SSID), and
link_info_change for LINK related changes (instead of the
legacy bss_info_change).
Signed-off-by: Shaul Triebitz <shaul.triebitz@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When a link is added or removed via nl80211, these are
called. Implement them so we don't have to check in all
the different per-link commands whether we've already
created the necessary datastructures.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Add the necessary infrastructure, including a new driver
method, to add/remove links to/from a station. To do this,
refactor the link alloc/free a bit, splitting that so we
can do it without linking them, to handle failures better.
Note that a station entry must be created representing an
MLD or a non-MLD STA, it cannot change between the two.
When representing an MLD, the 'deflink' is used for the
first link, which might be removed later, in which case
the memory isn't reused.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Take a few bits out of the control.flags to add the link ID
to TX frame metadata, so drivers don't need to look it up
by the address themselves. Implement that lookup where it's
needed, for internal frame TX, and set it to "unspecified"
for data transmissions.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
If the interface is an MLD, then we don't know which band
the frame will be transmitted on, and we don't know how to
look up the band. Set the band information to zero in that
case, the driver cannot rely on it anyway.
No longer inline ieee80211_tx_skb_tid() since it's even
bigger now.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Add the necessary infrastructure, including a new driver
method, to add/remove links to/from an interface.
Also add the missing link address to bss_conf (which we
use as link_conf too), and fill it, in station mode for
now just randomly, in AP mode we get the address from
cfg80211 since the link must be created with an address
first.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When channel contexts are used, IEEE80211_CONF_CHANGE_SMPS
doesn't make sense and doesn't apply (which is documented).
Mask it in this case.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In ieee80211_build_hdr() we do the same thing for all
interface types except for AP_VLAN, but we can simplify
the code by pulling the common thing in front of the
switch and overriding it for AP_VLAN. This will also
simplify the code for MLD here later.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
For MLD, we might eventually not really know the band on status,
but some code assumes it's there. Move the sband lookup deep to
the code that actually needs it, to make it clear where exactly
it's needed and for what purposes.
For rate control, at least initially we won't support it in MLO,
so that won't be an issue.
For TX monitoring, we may have to elide the rate and/or rely on
ieee80211_tx_status_ext() for rate information.
This also simplifies the function prototypes.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This used to be sorted by driver methods, APIs and internal
functions, but got added to in the wrong sections. Fix that
by ordering the file properly again.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Start making some SMPS related code MLD-aware. This isn't
really done yet, but again cuts down our 'deflink' reliance.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We don't need to setup lists and work structs every time
we switch the interface type, factor that out into a new
ieee80211_link_init() function and use it.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
If MLO is enabled by the driver then validate a set of
capabilities that mac80211 will initially not support
in MLO. This might change if features are implemented.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Remove MAX_STA_LINKS and use IEEE80211_MLD_MAX_NUM_LINKS
instead to unify between the station and other data structures.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Refactor the code a bit to initialize a link belonging
to a station, and (later) free all allocated links.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The function is unused since commit 52b4810bed83 ("mac80211: Remove
support for changing AP SMPS mode") so we can just remove it.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Make the channel context code MLO aware, along with some
functions that it uses, so that the chan.c file is now
MLD-clean and no longer uses deflink/bss_conf/etc.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In a few cases we already have the link ID in the APIs,
pass it already even if it cannot be non-zero yet.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Add pointers so we can start using link_id throughout the
code, even if for now only link ID 0 is valid, pointing
to the "built-in" bss_conf, which is used by drivers that
are not aware of MLD.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Split the bss_info_changed method to vif_cfg_changed and
link_info_changed, with the latter getting a link ID.
Also change the 'changed' parameter to u64 already, we
know we need that.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Start reorganizing interface related data structures toward
MLD. The most complex part here is for the keys, since we
have to split the various kinds of GTKs off to the link but
still need to use (for WEP) the other keys as a fallback
even for multicast frames.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We'll use bss_conf for per-link configuration later, so
move out all the non-link-specific data out into a new
struct ieee80211_vif_cfg used in the vif.
Some adjustments were done with the following spatch:
@@
expression sdata;
struct ieee80211_vif *vifp;
identifier var = { assoc, ibss_joined, aid, arp_addr_list, arp_addr_cnt, ssid, ssid_len, s1g, ibss_creator };
@@
(
-sdata->vif.bss_conf.var
+sdata->vif.cfg.var
|
-vifp->bss_conf.var
+vifp->cfg.var
)
@bss_conf@
struct ieee80211_bss_conf *bss_conf;
identifier var = { assoc, ibss_joined, aid, arp_addr_list, arp_addr_cnt, ssid, ssid_len, s1g, ibss_creator };
@@
-bss_conf->var
+vif_cfg->var
(though more manual fixups were needed, e.g. replacing
"vif_cfg->" by "vif->cfg." in many files.)
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
To add MLD, reuse the bss_conf structure later for per-link
information, so move some things into it that are per link.
Most transformations were done with the following spatch:
@@
expression sdata;
identifier var = { chanctx_conf, mu_mimo_owner, csa_active, color_change_active, color_change_color };
@@
-sdata->vif.var
+sdata->vif.bss_conf.var
@@
struct ieee80211_vif *vif;
identifier var = { chanctx_conf, mu_mimo_owner, csa_active, color_change_active, color_change_color };
@@
-vif->var
+vif->bss_conf.var
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In order to support multi-link operation with multiple links,
start adding some APIs. The notable addition here is to have
the link ID in a new nl80211 attribute, that will be used to
differentiate the links in many nl80211 operations.
So far, this patch adds the netlink NL80211_ATTR_MLO_LINK_ID
attribute (as well as the NL80211_ATTR_MLO_LINKS attribute)
and plugs it through the system in some places, checking the
validity etc. along with other infrastructure needed for it.
For now, I've decided to include only the over-the-air link
ID in the API. I know we discussed that we eventually need to
have to have other ways of identifying a link, but for local
AP mode and auth/assoc commands as well as set_key etc. we'll
use the OTA ID.
Also included in this patch is some refactoring of the data
structures in struct wireless_dev, splitting for the first
time the data into type dependent pieces, to make reasoning
about these things easier.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We don't really care too much right now since our data
structures are set up to not have a problem with this,
but clearly it's wrong to accept WEP and pairwise keys
with key ID > 3.
However, with MLD we need to split into per-link (GTK,
IGTK, BIGTK) and per interface/MLD (including WEP) keys
so make sure this is not a problem.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Here's a first set of patches for v5.20. This is just a
queue flush, before we get things back from net-next that
are causing conflicts, and then can start merging a lot
of MLO (multi-link operation, part of 802.11be) code.
Lots of cleanups all over.
The only notable change is perhaps wilc1000 being the
first driver to disable WEP (while enabling WPA3).
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Merge tag 'wireless-next-2022-06-10' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next
Johannes Berg says:
====================
wireless-next patches for v5.20
Here's a first set of patches for v5.20. This is just a
queue flush, before we get things back from net-next that
are causing conflicts, and then can start merging a lot
of MLO (multi-link operation, part of 802.11be) code.
Lots of cleanups all over.
The only notable change is perhaps wilc1000 being the
first driver to disable WEP (while enabling WPA3).
* tag 'wireless-next-2022-06-10' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next: (29 commits)
wifi: mac80211_hwsim: Directly use ida_alloc()/free()
wifi: mac80211: refactor some key code
wifi: mac80211: remove cipher scheme support
wifi: nl80211: fix typo in comment
wifi: virt_wifi: fix typo in comment
rtw89: add new state to CFO state machine for UL-OFDMA
rtw89: 8852c: add trigger frame counter
ieee80211: add trigger frame definition
wifi: wfx: Remove redundant NULL check before release_firmware() call
wifi: rtw89: support MULTI_BSSID and correct BSSID mask of H2C
wifi: ray_cs: Drop useless status variable in parse_addr()
wifi: ray_cs: Utilize strnlen() in parse_addr()
wifi: rtw88: use %*ph to print small buffer
wifi: wilc1000: add IGTK support
wifi: wilc1000: add WPA3 SAE support
wifi: wilc1000: remove WEP security support
wifi: wilc1000: use correct sequence of RESET for chip Power-UP/Down
wifi: rtlwifi: fix error codes in rtl_debugfs_set_write_h2c()
wifi: rtw88: Fix Sparse warning for rtw8821c_hw_spec
wifi: rtw88: Fix Sparse warning for rtw8723d_hw_spec
...
====================
Link: https://lore.kernel.org/r/20220610142838.330862-1-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
There's some pretty close code here, with the exception
of RCU dereference vs. protected dereference. Refactor
this to just return a pointer and then do the deref in
the caller later.
Change-Id: Ide5315e2792da6ac66eaf852293306a3ac71ced9
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The only driver using this was iwlwifi, where we just removed
the support because it was never really used. Remove the code
from mac80211 as well.
Change-Id: I1667417a5932315ee9d81f5c233c56a354923f09
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In ieee80211_vif_use_reserved_context(), when we have an
old context and the new context's replace_state is set to
IEEE80211_CHANCTX_REPLACE_NONE, we free the old context
in ieee80211_vif_use_reserved_reassign(). Therefore, we
cannot check the old_ctx anymore, so we should set it to
NULL after this point.
However, since the new_ctx replace state is clearly not
IEEE80211_CHANCTX_REPLACES_OTHER, we're not going to do
anything else in this function and can just return to
avoid accessing the freed old_ctx.
Cc: stable@vger.kernel.org
Fixes: 5bcae31d9cb1 ("mac80211: implement multi-vif in-place reservations")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220601091926.df419d91b165.I17a9b3894ff0b8323ce2afdb153b101124c821e5@changeid
Second set of patches for v5.19 and most likely the last one. rtw89
got support for 8852ce devices and mt76 now supports Wireless Ethernet
Dispatch.
Major changes:
cfg80211/mac80211
* support disabling EHT mode
rtw89
* add support for Realtek 8852ce devices
mt76
* Wireless Ethernet Dispatch support for flow offload
* non-standard VHT MCS10-11 support
* mt7921 AP mode support
* mt7921 ipv6 NS offload support
ath11k
* enable keepalive during WoWLAN suspend
* implement remain-on-channel support
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Merge tag 'wireless-next-2022-05-19' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next
Kalle Valo says:
====================
wireless-next patches for v5.19
Second set of patches for v5.19 and most likely the last one. rtw89
got support for 8852ce devices and mt76 now supports Wireless Ethernet
Dispatch.
Major changes:
cfg80211/mac80211
- support disabling EHT mode
rtw89
- add support for Realtek 8852ce devices
mt76
- Wireless Ethernet Dispatch support for flow offload
- non-standard VHT MCS10-11 support
- mt7921 AP mode support
- mt7921 ipv6 NS offload support
ath11k
- enable keepalive during WoWLAN suspend
- implement remain-on-channel support
* tag 'wireless-next-2022-05-19' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next: (135 commits)
iwlwifi: mei: fix potential NULL-ptr deref
iwlwifi: mei: clear the sap data header before sending
iwlwifi: mvm: remove vif_count
iwlwifi: mvm: always tell the firmware to accept MCAST frames in BSS
iwlwifi: mvm: add OTP info in case of init failure
iwlwifi: mvm: fix assert 1F04 upon reconfig
iwlwifi: fw: init SAR GEO table only if data is present
iwlwifi: mvm: clean up authorized condition
iwlwifi: mvm: use NULL instead of ERR_PTR when parsing wowlan status
iwlwifi: pcie: simplify MSI-X cause mapping
rtw89: pci: only mask out INT indicator register for disable interrupt v1
rtw89: convert rtw89_band to nl80211_band precisely
rtw89: 8852c: update txpwr tables to HALRF_027_00_052
rtw89: cfo: check mac_id to avoid out-of-bounds
rtw89: 8852c: set TX antenna path
rtw89: add ieee80211::sta_rc_update ops
wireless: Fix Makefile to be in alphabetical order
mac80211: refactor freeing the next_beacon
cfg80211: fix kernel-doc for cfg80211_beacon_data
mac80211: minstrel_ht: support ieee80211_rate_status
...
====================
Link: https://lore.kernel.org/r/20220519153334.8D051C385AA@smtp.kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This patch adds support for the new struct ieee80211_rate_status and its
annotation in struct ieee80211_tx_status in minstrel_ht.
In minstrel_ht_tx_status, a check for the presence of instances of the
new struct in ieee80211_tx_status is added. Based on this, minstrel_ht
then gets and updates internal rate stats with either struct
ieee80211_rate_status or ieee80211_tx_info->status.rates.
Adjusted variants of minstrel_ht_txstat_valid, minstrel_ht_get_stats,
minstrel_{ht/vht}_get_group_idx are added which use struct
ieee80211_rate_status and struct rate_info instead of the legacy structs.
struct rate_info from cfg80211.h does not provide whether short preamble
was used for the transmission. So we retrieve this information from VIF
and STA configuration and cache it in a new flag in struct minstrel_ht_sta
per rate control instance.
Compile-Tested: current wireless-next tree with all flags on
Tested-on: Xiaomi 4A Gigabit (MediaTek MT7603E, MT7612E) with OpenWrt
Linux 5.10.113
Signed-off-by: Jonas Jelonek <jelonek.jonas@gmail.com>
Link: https://lore.kernel.org/r/20220509173958.1398201-3-jelonek.jonas@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This patch adds the new struct ieee80211_rate_status and replaces
'struct rate_info *rate' in ieee80211_tx_status with pointer and length
annotation.
The struct ieee80211_rate_status allows to:
(1) receive tx power status feedback for transmit power control (TPC)
per packet or packet retry
(2) dynamic mapping of wifi chip specific multi-rate retry (mrr)
chains with different lengths
(3) increase the limit of annotatable rate indices to support
IEEE802.11ac rate sets and beyond
ieee80211_tx_info, control and status buffer, and ieee80211_tx_rate
cannot be used to achieve these goals due to fixed size limitations.
Our new struct contains a struct rate_info to annotate the rate that was
used, retry count of the rate and tx power. It is intended for all
information related to RC and TPC that needs to be passed from driver to
mac80211 and its RC/TPC algorithms like Minstrel_HT. It corresponds to
one stage in an mrr. Multiple subsequent instances of this struct can be
included in struct ieee80211_tx_status via a pointer and a length variable.
Those instances can be allocated on-stack. The former reference to a single
instance of struct rate_info is replaced with our new annotation.
An extension is introduced to struct ieee80211_hw. There are two new
members called 'tx_power_levels' and 'max_txpwr_levels_idx' acting as a
tx power level table. When a wifi device is registered, the driver shall
supply all supported power levels in this list. This allows to support
several quirks like differing power steps in power level ranges or
alike. TPC can use this for algorithm and thus be designed more abstract
instead of handling all possible step widths individually.
Further mandatory changes in status.c, mt76 and ath11k drivers due to the
removal of 'struct rate_info *rate' are also included.
status.c already uses the information in ieee80211_tx_status->rate in
radiotap, this is now changed to use ieee80211_rate_status->rate_idx.
mt76 driver already uses struct rate_info to pass the tx rate to status
path. The new members of the ieee80211_tx_status are set to NULL and 0
because the previously passed rate is not relevant to rate control and
accurate information is passed via tx_info->status.rates.
For ath11k, the txrate can be passed via this struct because ath11k uses
firmware RC and thus the information does not interfere with software RC.
Compile-Tested: current wireless-next tree with all flags on
Tested-on: Xiaomi 4A Gigabit (MediaTek MT7603E, MT7612E) with OpenWrt
Linux 5.10.113
Signed-off-by: Jonas Jelonek <jelonek.jonas@gmail.com>
Link: https://lore.kernel.org/r/20220509173958.1398201-2-jelonek.jonas@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Fill all requested rates (in case of ath9k 4 rate slots are
available, so fill all 4 instead of only 3), improves throughput in
noisy environment.
Signed-off-by: Peter Seiderer <ps.report@gmx.net>
Link: https://lore.kernel.org/r/20220402153014.31332-2-ps.report@gmx.net
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
AP may run out of BSS color after color collision
detection event from driver.
Disable BSS color collision detection if no free colors are
available based on bss color disabled bit sent as a part of
NL80211_ATTR_HE_BSS_COLOR attribute sent in
NL80211_CMD_SET_BEACON.
It can be reenabled once new color is available.
Signed-off-by: Lavanya Suresh <lavaks@codeaurora.org>
Signed-off-by: Rameshkumar Sundaram <quic_ramess@quicinc.com>
Link: https://lore.kernel.org/r/1649867295-7204-3-git-send-email-quic_ramess@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
NL80211_ATTR_HE_BSS_COLOR attribute can be included in both
NL80211_CMD_START_AP and NL80211_CMD_SET_BEACON commands.
Move he_bss_color from cfg80211_ap_settings to cfg80211_beacon_data
and parse NL80211_ATTR_HE_BSS_COLOR as a part of nl80211_parse_beacon()
to have bss color settings parsed for both start ap and set beacon
commands.
Add a new flag he_bss_color_valid to indicate whether
NL80211_ATTR_HE_BSS_COLOR attribute is included.
Signed-off-by: Rameshkumar Sundaram <quic_ramess@quicinc.com>
Link: https://lore.kernel.org/r/1649867295-7204-2-git-send-email-quic_ramess@quicinc.com
[fix build ...]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We currently track whether we're associated and which the
BSS is in the same variable (ifmgd->associated), but for
MLD we'll need to move the BSS pointer to be per link,
while the question whether we're associated or not is for
the whole interface.
Add ifmgd->assoc_bss that stores the pointer and change
ifmgd->associated to be just a bool, so the question of
whether we're associated can continue working after MLD
rework, without requiring changes, while the BSS pointer
will have to be changed/used checked per link.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We don't need to copy this locally, we now only use the
variable to print before doing other things.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We never use the bssid argument to ieee80211_sta_connection_lost()
so we might as well just remove it.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
There's no need to look it up from the ifmgd->associated
BSS configuration, we already maintain a local copy since
commit b0140fda626e ("mac80211: mlme: save ssid info to
ieee80211_bss_conf while assoc").
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Since we always track the BSSID there when we get associated,
these are equivalent, but ifmgd->bssid saves a dereference and
thus makes the code a bit smaller, and more readable.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This code is tightly coupled to the sdata->u.mgd data
structure, so there's no reason for it to be in utils.
Move it to mlme.c.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Ping-Ke's previous patch adjusted the CCMP AAD construction
to properly take the order bit into account, but failed to
update the (identical) GCMP AAD construction as well.
Unify the AAD construction between the two cases.
Reported-by: Jouni Malinen <j@w1.fi>
Link: https://lore.kernel.org/r/20220506105150.51d66e2a6f3c.I65f12be82c112365169e8a9f48c7a71300e814b9@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
No conflicts.
Build issue in drivers/net/ethernet/sfc/ptp.c
54fccfdd7c66 ("sfc: efx_default_channel_type APIs can be static")
49e6123c65da ("net: sfc: fix memory leak due to ptp channel")
https://lore.kernel.org/all/20220510130556.52598fe2@canb.auug.org.au/
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
