Commit Graph

1205 Commits

Author SHA1 Message Date
Rafael Mendonca 6546646a7f wifi: mac80211: mlme: Fix double unlock on assoc success handling
Commit 6911458dc4 ("wifi: mac80211: mlme: refactor assoc success
handling") moved the per-link setup out of ieee80211_assoc_success() into a
new function ieee80211_assoc_config_link() but missed to remove the unlock
of 'sta_mtx' in case of HE capability/operation missing on HE AP, which
leads to a double unlock:

ieee80211_assoc_success() {
    ...
    ieee80211_assoc_config_link() {
        ...
        if (!(link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_HE) &&
            (!elems->he_cap || !elems->he_operation)) {
            mutex_unlock(&sdata->local->sta_mtx);
            ...
        }
        ...
    }
    ...
    mutex_unlock(&sdata->local->sta_mtx);
    ...
}

Fixes: 6911458dc4 ("wifi: mac80211: mlme: refactor assoc success handling")
Signed-off-by: Rafael Mendonca <rafaelmendsr@gmail.com>
Link: https://lore.kernel.org/r/20220925143420.784975-1-rafaelmendsr@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-09-27 10:34:45 +02:00
Rafael Mendonca 883b8dc1a8 wifi: mac80211: mlme: Fix missing unlock on beacon RX
Commit 98b0b46746 ("wifi: mac80211: mlme: use correct link_sta")
switched to link station instead of deflink and added some checks to do
that, which are done with the 'sta_mtx' mutex held. However, the error
path of these checks does not unlock 'sta_mtx' before returning.

Fixes: 98b0b46746 ("wifi: mac80211: mlme: use correct link_sta")
Signed-off-by: Rafael Mendonca <rafaelmendsr@gmail.com>
Link: https://lore.kernel.org/r/20220924184042.778676-1-rafaelmendsr@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-09-27 10:33:51 +02:00
Paolo Abeni 9f8f1933dc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
drivers/net/ethernet/freescale/fec.h
  7d650df99d ("net: fec: add pm_qos support on imx6q platform")
  40c79ce13b ("net: fec: add stop mode support for imx8 platform")

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2022-09-08 18:38:30 +02:00
Johannes Berg 189a0c52f3 wifi: mac80211: set up beacon timing config on links
On secondary MLO links, I forgot to set the beacon interval
and DTIM period, fix that.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-09-06 10:15:03 +02:00
Johannes Berg 0ab26380d9 wifi: mac80211: extend ieee80211_nullfunc_get() for MLO
Add a link_id parameter to ieee80211_nullfunc_get() to be
able to obtain a correctly addressed frame.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-09-06 10:14:24 +02:00
Johannes Berg efe9c2bfd1 wifi: mac80211: isolate driver from inactive links
In order to let the driver select active links and properly
make multi-link connections, as a first step isolate the
driver from inactive links, and set the active links to be
only the association link for client-side interfaces. For
AP side nothing changes since APs always have to have all
their links active.

To simplify things, update the for_each_sta_active_link()
API to include the appropriate vif pointer.

This also implies not allocating a chanctx for an inactive
link, which requires a few more changes.

Since we now no longer try to program multiple links to the
driver, remove the check in the MLME code.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-09-06 10:12:44 +02:00
Johannes Berg b38d15294f Merge remote-tracking branch 'wireless/main' into wireless-next
Merge wireless/main to get the rx.link fix, which is needed
for further work in this area.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-09-06 10:05:39 +02:00
Johannes Berg 7e415d0c8c wifi: mac80211: mlme: refactor QoS settings code
Refactor the code to apply QoS settings to the driver so
we can call it on link switch.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-09-03 17:04:15 +02:00
Johannes Berg acdc3e4788 wifi: mac80211: mlme: assign link address correctly
Right now, we assign the link address only after we add
the link to the driver, which is quite obviously wrong.
It happens to work in many cases because it gets updated
immediately, and then link_conf updates may update it,
but it's clearly not really right.

Set the link address during ieee80211_mgd_setup_link()
so it's set before telling the driver about the link.

Fixes: 81151ce462 ("wifi: mac80211: support MLO authentication/association with one link")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-09-03 17:02:34 +02:00
Johannes Berg 774e00c20c wifi: mac80211: remove unused arg to ieee80211_chandef_eht_oper
We don't need the sdata argument, and it doesn't make any
sense for a direct conversion from one value to another,
so just remove the argument

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-09-03 17:01:56 +02:00
Johannes Berg 90703ba9bb wifi: mac80211: prevent 4-addr use on MLDs
We haven't tried this yet, and it's not very likely to
work well right now, so for now disable 4-addr use on
interfaces that are MLDs.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Link: https://lore.kernel.org/r/20220902161143.f2e4cc2efaa1.I5924e8fb44a2d098b676f5711b36bbc1b1bd68e2@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-09-03 16:57:34 +02:00
Johannes Berg 69371801f9 wifi: mac80211: fix locking in auth/assoc timeout
If we hit an authentication or association timeout, we only
release the chanctx for the deflink, and the other link(s)
are released later by ieee80211_vif_set_links(), but we're
not locking this correctly.

Fix the locking here while releasing the channels and links.

Change-Id: I9e08c1a5434592bdc75253c1abfa6c788f9f39b1
Fixes: 81151ce462 ("wifi: mac80211: support MLO authentication/association with one link")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-09-03 16:40:06 +02:00
Johannes Berg 7a2c6d1616 wifi: mac80211: mlme: release deflink channel in error case
In the prep_channel error case we didn't release the deflink
channel leaving it to be left around. Fix that.

Change-Id: If0dfd748125ec46a31fc6045a480dc28e03723d2
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-09-03 16:40:06 +02:00
Johannes Berg abd27d063c wifi: mac80211: correct SMPS mode in HE 6 GHz capability
If we add 6 GHz capability in MLO, we cannot use the SMPS
mode from the deflink. Pass it separately instead since on
a second link we don't even have a link data struct yet.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-08-26 09:56:36 +02:00
Veerendranath Jakkam b8c9024e0e wifi: cfg80211: Add link_id to cfg80211_ch_switch_started_notify()
Add link_id parameter to cfg80211_ch_switch_started_notify() to allow
driver to indicate on which link channel switch started on MLD.

Send the data to userspace so it knows as well.

Signed-off-by: Veerendranath Jakkam <quic_vjakkam@quicinc.com>
Link: https://lore.kernel.org/r/20220722131143.3438042-1-quic_vjakkam@quicinc.com
Link: https://lore.kernel.org/r/20220722131143.3438042-2-quic_vjakkam@quicinc.com
[squash two patches]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-08-25 11:07:26 +02:00
Johannes Berg ea5cba269f wifi: cfg80211/mac80211: check EHT capability size correctly
For AP/non-AP the EHT MCS/NSS subfield size differs, the
4-octet subfield is only used for 20 MHz-only non-AP STA.
Pass an argument around everywhere to be able to parse it
properly.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-08-25 10:41:24 +02:00
Mordechay Goodstein 1cb3cf372a wifi: mac80211: mlme: don't add empty EML capabilities
Draft P802.11be_D2.1, section 35.3.17 states that the EML Capabilities
Field shouldn't be included in case the device doesn't have support for
EMLSR or EMLMR.

Fixes: 81151ce462 ("wifi: mac80211: support MLO authentication/association with one link")
Signed-off-by: Mordechay Goodstein <mordechay.goodstein@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-08-25 10:41:20 +02:00
Johannes Berg 4f6c78de32 wifi: mac80211: use link ID for MLO in queued frames
When queuing frames to an interface store the link ID we
determined (which possibly came from the driver in the
RX status in the first place) in the RX status, and use
it in the MLME code to send probe responses, beacons and
CSA frames to the right link.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-08-25 10:41:18 +02:00
Johannes Berg 40fb871290 wifi: mac80211: fix use-after-free
We've already freed the assoc_data at this point, so need
to use another copy of the AP (MLD) address instead.

Fixes: 81151ce462 ("wifi: mac80211: support MLO authentication/association with one link")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-08-25 10:41:00 +02:00
Johannes Berg a94c90d321 wifi: mac80211: mlme: fix disassoc with MLO
In MLO we shouldn't call ieee80211_bss_info_change_notify(),
call that only (for backward compatibility) without MLO, and
otherwise ieee80211_vif_cfg_change_notify().

Similarly, ieee80211_reset_erp_info() only applies to the
current link, and in MLO we assume the driver doesn't really
need that.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-22 14:28:50 +02:00
Johannes Berg 4ca04ed364 wifi: mac80211: mlme: transmit assoc frame with address translation
To transmit the association frame to the right station and
with address translation, use the correct addresses there
and set up the AP address in the configuration earlier so
it's applied during the transmit of auth/assoc frames.

Fixes: 81151ce462 ("wifi: mac80211: support MLO authentication/association with one link")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-22 14:28:41 +02:00
Johannes Berg b18d87f5d1 wifi: mac80211: mlme: fix link_sta setup
We need to copy the address to both the private and public
portion of the link_sta (the private one is needed for the
hash table). Fix this.

Fixes: bbe90107e1 ("wifi: mac80211: mlme: refactor link station setup")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-22 14:28:17 +02:00
Johannes Berg 6d8e0f84f8 wifi: mac80211: mlme: set sta.mlo to mlo state
At this point, we've already changed link_id to be zero for
a non-MLO connection, so use the 'mlo' variable rather than
link ID to determine the MLO status of the station.

Fixes: bd363ee533 ("wifi: mac80211: mlme: set sta.mlo correctly")
Fixes: 81151ce462 ("wifi: mac80211: support MLO authentication/association with one link")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-22 14:27:59 +02:00
Johannes Berg 553a282cb2 wifi: mac80211: mlme: fix override calculation
In my previous changes here, I neglected to take the old
conn_flags into account that might still be present from
the authentication, and thus ieee80211_setup_assoc_link()
can misbehave, as well as the override calculation being
wrong. Fix that by ORing in the old flags.

Fixes: 1845c1d4a4 ("wifi: mac80211: mlme: refactor assoc link setup")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-22 14:27:45 +02:00
Johannes Berg 8a9be422f5 wifi: mac80211: tx: use AP address in some places for MLO
In a few places we need to use the AP (MLD) address, not the
deflink BSSID, the link address translation will happen later.

To make that work properly for fast-xmit, set up the ap_addr
in the vif.cfg earlier.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-22 14:27:41 +02:00
Johannes Berg bd363ee533 wifi: mac80211: mlme: set sta.mlo correctly
Due to some changes and rebasing between different patches
this fell through the cracks; we need to set sta.mlo if the
connection is using MLO.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 15:12:45 +02:00
Johannes Berg 81151ce462 wifi: mac80211: support MLO authentication/association with one link
It might seem a bit pointless to do a multi-link operation
connection with just a single link, but this is already a
big change, so for now, limit MLO connections to a single
link.

Extending that to multiple links will require
 * work on parsing the multi-link element with STA profile
   properly, including element fragmentation;
 * checking the per-link status in the multi-link element
 * implementing logic to have active/inactive links to let
   drivers decide which links should be active;
 * implementing multicast RX deduplication;
 * and likely more.

For now this is still useful since it lets us do multi-link
connections for the purposes of testing APIs and the higher
layers such as wpa_supplicant.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:24 +02:00
Johannes Berg f36fe0a2df wifi: mac80211: fix up link station creation/insertion
When we create a station with a non-default link, then
we should have a link address, and we definitely need
to insert it into the link hash table on insertion.

Split the API into with and without link creation and
if it has a link, insert the link into the link hash
table on sta_info_insert().

Fixes: ba6ddab94f ("wifi: mac80211: maintain link-sta hash table")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:23 +02:00
Johannes Berg 175ad2ec89 wifi: mac80211: limit A-MSDU subframes for client too
In AP/mesh where the stations are added by userspace, we
limit the number of A-MSDU subframes according to the
extended capabilities.

Refactor the code and extend that also to client-side.

Fixes: 506bcfa8ab ("mac80211: limit the A-MSDU Tx based on peer's capabilities")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:23 +02:00
Johannes Berg 5d3a341c0d wifi: mac80211: mlme: refactor ieee80211_set_associated()
Split out much of the code in ieee80211_set_associated()
into a new ieee80211_link_set_associated() which can be
called per link later for MLO.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:23 +02:00
Johannes Berg 74e1309ace wifi: mac80211: mlme: look up beacon elems only if needed
If NEED_DTIM_BEFORE_ASSOC isn't set, then we don't need
to enter an RCU critical section and look up the beacon
elements.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:23 +02:00
Johannes Berg 1845c1d4a4 wifi: mac80211: mlme: refactor assoc link setup
Factor out the code to set up the assoc link into a
new function ieee80211_setup_assoc_link().

While at it, also modify the 'override' handling to
just take into account whether or not the conn_flags
were changed, which is what we need to setup again
the channel later.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:23 +02:00
Johannes Berg a857c21eaf wifi: mac80211: mlme: remove address arg to ieee80211_mark_sta_auth()
There's no need to pass the address, we can look at the auth_data
inside the function rather than outside.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:22 +02:00
Johannes Berg 6911458dc4 wifi: mac80211: mlme: refactor assoc success handling
Refactor the per-link setup out of ieee80211_assoc_success()
into a new function ieee80211_assoc_config_link().

It looks useless for now to parse the elements again inside
ieee80211_assoc_config_link(), but that will be done with
the link ID in the future.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:22 +02:00
Johannes Berg 7781f0d81c wifi: mac80211: mlme: refactor ieee80211_prep_channel() a bit
Refactor ieee80211_prep_channel() to make the link argument
optional and add a conn_flags pointer argument instead, so
that we can later use this for links that don't exist yet
to build the right information for MLO.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:22 +02:00
Johannes Berg 978420c210 wifi: mac80211: mlme: refactor assoc req element building
For MLO, we will need to build these elements per link, so
factor out the code that does this, returning the capability,
to simplify building the multi-link element in the future.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:22 +02:00
Johannes Berg 39d805998c wifi: mac80211: mlme: switch some things back to deflink
With MLO, when we'll disconnect from an AP MLD, we'll just
destroy all the links. Therefore, the only thing we (may)
need to reset is the deflink data, so switch back to that
and adjust the comments accordingly.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:22 +02:00
Johannes Berg 4a21a8ae79 wifi: mac80211: mlme: change flags in ieee80211_determine_chantype()
For MLO we'll need to read flags not directly from the link as
it may not even exist yet if we're just setting up flags for
a secondary link before sending the association request, so
pass the incoming conn_flags separately. Also, while at it,
pass the sdata/link separately as for non-tracking now the
link may be NULL.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:22 +02:00
Johannes Berg 61513162aa wifi: mac80211: mlme: shift some code around
We'll need ieee80211_prep_channel() in other code for MLO
later, so move the code up - unchanged for now - to avoid
forward declarations in the future.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:22 +02:00
Johannes Berg bbe90107e1 wifi: mac80211: mlme: refactor link station setup
Refactor the code here since we need to have it also for each
link station after association in MLO later.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:22 +02:00
Johannes Berg 39eac2de00 wifi: mac80211: move IEEE80211_SDATA_OPERATING_GMODE to link
The flag here is currently per interface, but the way we
set and clear it means it should be per link, so change
it.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:21 +02:00
Johannes Berg de03f8ac5c wifi: mac80211: make ieee80211_check_rate_mask() link-aware
Change ieee80211_check_rate_mask() to use a link rather than
the sdata and deflink/bss_conf.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:21 +02:00
Johannes Berg 64f4b93afa wifi: mac80211: mlme: clean up supported channels element code
Clean up the code building the supported channels element
a little bit by using a local variable instead of the long
line.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:21 +02:00
Johannes Berg a95fe06782 wifi: mac80211: consider EHT element size in assoc request
We need to consider the (maximum) size of the EHT element
we'll add for the association request, otherwise we may run
out of space.

Fixes: 820acc810f ("mac80211: Add EHT capabilities to association/probe request")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:18 +02:00
Johannes Berg df9a9c44e9 wifi: mac80211: mlme: simplify adding ht/vht/he/eht elements
The functions currently take a link and check data
from it, but this needs to change for MLO. Simplify
the prototypes by passing only the needed arguments.

Remove the regulatory checks, the warnings shouldn't
trigger, and haven't as far as I know.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:18 +02:00
Johannes Berg 3c68cb81bf wifi: mac80211: refactor adding custom elements
Rework the sorting of custom elements into the association
request by moving the elements before HT/VHT/HE to each
their own function. While at it, fix the placement of the
ones that should be between VHT and HE.

This doesn't fix the placement of elements that should be
between HE and EHT yet, a similar change might be needed
in the future.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:18 +02:00
Johannes Berg c1690b66ba wifi: mac80211: refactor adding rates to assoc request
There's some awkward code that really only exists
because we want to optimize the allocation size,
but that's not really all that necessary.

Refactor the code that adds rates to the association
request frame to have a separate function, removing
the goto.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:18 +02:00
Johannes Berg 3dc05935ea wifi: mac80211: use only channel width in ieee80211_parse_bitrates()
For MLO, we may not have a full chandef here later, so change
the API to pass only the width.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:18 +02:00
Johannes Berg c57d2e6a65 wifi: mac80211: remove redundant condition
Here, ext_capa is checked and can only be non-NULL if
assoc_data->ie_len was set before, so the check here
is redundant.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:18 +02:00
Johannes Berg 38c6aa29d4 wifi: mac80211: fix multi-BSSID element parsing
When parsing a frame containing a multi-BSSID element, we
need to know both the transmitted and non-transmitted BSSID
so we can parse it correctly.

Unfortunately, in quite a number of cases, we got this wrong
and were passing the wrong BSSID or useless information:
 * the mgmt->bssid from a frame is only the transmitted
   BSSID if the frame is a beacon
 * passing just one of the parameters as non-NULL isn't
   useful and ignored

In those case where we need to parse for a specific BSS we
always have a BSS structure pointer, representing the BSS
we need, whether transmitted or not. Thus, pass that pointer
to the parsing function instead of the two BSSIDs.

Also fix two bugs:
 * we need to re-parse all the elements for the other BSS
   when iterating the non-transmitted BSSes in scan
 * we need to parse for the correct BSS when setting up
   the channel data in client code

Fixes: 78ac51f815 ("mac80211: support multi-bssid")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:17 +02:00
Johannes Berg ab3a830d96 wifi: mac80211: move tdls_chan_switch_prohibited to link data
This value should be per link, since a TDLS connection is
only established on a given link.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:17 +02:00
Johannes Berg 635495e9c4 wifi: mac80211: don't re-parse elems in ieee80211_assoc_success()
We're already passing the elems pointer, and have parsed
them from the same frame with exactly the same parameters,
so don't need to do that again.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:17 +02:00
Johannes Berg 5cd212cb64 wifi: cfg80211: extend cfg80211_rx_assoc_resp() for MLO
Extend the cfg80211_rx_assoc_resp() to cover multiple
BSSes, the AP MLD address and local link addresses
for MLO.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:17 +02:00
Johannes Berg cd47c0f57a wifi: cfg80211: put cfg80211_rx_assoc_resp() arguments into a struct
For MLO we'll need a lot more arguments, including all the
BSS pointers and link addresses, so move the data to a struct
to be able to extend it more easily later.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:17 +02:00
Johannes Berg e69dac88a1 wifi: cfg80211: adjust assoc comeback for MLO
We only report the BSSID to userspace, so change the
argument from BSS struct pointer to AP address, which
we'll use to carry either the BSSID or AP MLD address.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:17 +02:00
Johannes Berg afa2d65938 wifi: mac80211: mlme: unify assoc data event sending
There are a few cases where we send an event to cfg80211
manually, but ieee80211_destroy_assoc_data() also handles
the case of abandoning; some cases don't need an event
and success is handled yet differently.

Unify this by providing a single status argument to the
ieee80211_destroy_assoc_data() function and then handling
all the different cases of events (or no events) there.

This will help simplify the code when MLO support is
added.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:17 +02:00
Johannes Berg f662d2f4e2 wifi: cfg80211: prepare association failure APIs for MLO
For MLO, we need the ability to report back multiple BSS
structures to release, as well as the AP MLD address (if
attempting to make an MLO connection).

Unify cfg80211_assoc_timeout() and cfg80211_abandon_assoc()
into a new cfg80211_assoc_failure() that gets a structure
parameter with the necessary data.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:16 +02:00
Johannes Berg 8f6e0dfc22 wifi: cfg80211: remove BSS pointer from cfg80211_disassoc_request
The race described by the comment in mac80211 hasn't existed
since the locking rework to use the same lock and for MLO we
need to pass the AP MLD address, so just pass the BSSID or
AP MLD address instead of the BSS struct pointer, and adjust
all the code accordingly.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:16 +02:00
Johannes Berg 98b0b46746 wifi: mac80211: mlme: use correct link_sta
For station capabilities, e.g. TWT, we need to use the correct
link station instead of deflink. Switch the code to do that.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:16 +02:00
Johannes Berg d3853f700c wifi: mac80211: mlme: remove sta argument from ieee80211_config_bw
The argument is unused except for NULL checking, but we already
do that anyway, so it's not needed. Remove the argument.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:16 +02:00
Johannes Berg 1dd0f31c23 wifi: mac80211: mlme: use ieee80211_get_link_sband()
This requires a few more changes.

While at it, also add a warning to ieee80211_get_sband()
to avoid it being used when there are multiple links.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:16 +02:00
Johannes Berg 6359598df6 wifi: mac80211: split IEEE80211_STA_DISABLE_WMM to link data
If we decide to stop tracking QoS/WMM parameters, then
this should be a per-link decision. Move the flag to
the link instead.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:16 +02:00
Johannes Berg 5bd5666d8a wifi: mac80211: mlme: first adjustments for MLO
Do the first adjustments in the client-side code to pass
the link pointer (instead of sdata) to most places etc.

This is just preparation, so the real MLO patches become
smaller.

Note that this isn't complete, notably there are still
quite a few references to sta->deflink and sta->sta.deflink.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:16 +02:00
Johannes Berg 42ed6748af wifi: mac80211: mlme: do IEEE80211_STA_RESET_SIGNAL_AVE per link
Remove the IEEE80211_STA_RESET_SIGNAL_AVE flag and use
a bool instead, but invert the polarity (now calling it
tracking_signal_avg) so we don't have to initialize it,
and put that into the link instead.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:16 +02:00
Johannes Berg b65567b03c wifi: mac80211: mlme: track AP (MLD) address separately
To prepare a bit more for MLO in the client code,
track the AP's address (for now only the BSSID, but
will track the AP MLD's address later) separately
from the per-link BSSID.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:16 +02:00
Johannes Berg 7ebe994fbd wifi: mac80211: remove unused bssid variable
This variable is only written to, remove it.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:16 +02:00
Johannes Berg b3e2130bf5 wifi: mac80211: change QoS settings API to take link into account
Take the link into account in the QoS settings (EDCA parameters)
APIs.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:15 +02:00
Johannes Berg 8c7c6b5819 wifi: mac80211: expect powersave handling in driver for MLO
In MLO, expect the driver fully handles powersave handling,
including tracking whether or not a beacon was received,
the DTIM period, etc.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:15 +02:00
Johannes Berg a3b8008dc1 wifi: mac80211: move ps setting to vif config
This really shouldn't be in a per-link config, we don't want
to let anyone control it that way (if anything, link powersave
could be forced through APIs to activate/deactivate a link),
and we don't support powersave in software with devices that
can do MLO.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:15 +02:00
Johannes Berg b2e8434f18 wifi: mac80211: set up/tear down client vif links properly
In station/client mode, the link data needs a bit more
initialization and destruction than just zero-init and
kfree() respectively, implement that.

This required some shuffling of the link data handling
in general, as we should set it up in setup and do the
teardown in teardown, otherwise we're asymmetric in
case of interface type changes.

Also stop using kfree_rcu(), we cannot guarantee that
nothing is scheduling things that live within the link
(e.g. the u.mgd.request_smps_work) until we're sure it
cannot be referenced anymore, therefore synchronize
instead. This isn't very efficient, but we can always
optimize it later.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:15 +02:00
Johannes Berg 94ddc3b5aa wifi: mac80211: move ieee80211_request_smps_mgd_work
This function can be static.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:15 +02:00
Johannes Berg ba323e2985 wifi: mac80211: separate out connection downgrade flags
Separate out the connection downgrade flags from the ifmgd->flags
and put them into the link information instead. While at it, make
them a separate sparse type so we don't get confused about where
they belong and have static checking on correct handling.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:14 +02:00
Ilan Peer 1e0b3b0b6c wifi: mac80211: Align with Draft P802.11be_D1.5
Align the mac80211 implementation with P802.11be_D1.5.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:14 +02:00
Johannes Berg 28977e790b wifi: mac80211: skip powersave recalc if driver SUPPORTS_DYNAMIC_PS
There are a few places that check ps_sdata and/or the dynamic
PS timeout, but they're erroneous in case SUPPORTS_DYNAMIC_PS
is set by the driver.

Skip the entire recalculation in this case so we cannot get
into those paths elsewhere, and so we simplify this for the
purpose of implementing MLO.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:14 +02:00
Johannes Berg d8675a6351 wifi: mac80211: RCU-ify link/link_conf pointers
Since links can be added and removed dynamically, we need to
somehow protect the sdata->link[] and vif->link_conf[] array
pointers from disappearing when accessing them without locks.
RCU-ify the pointers to achieve this, which requires quite a
bit of rework.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:14 +02:00
Lian Chen bf326cf53a wifi: mac80211: make 4addr null frames using min_rate for WDS
WDS needs 4addr packets to trigger AP for wlan0.sta creation.
However, the 4addr null frame is sent at a high rate so that
sometimes the AP can't receive it. Switch to using min rate.

Signed-off-by: Lian Chen <lian.chen@mediatek.com>
Link: https://lore.kernel.org/r/20220714091636.59107-1-lian.chen@mediatek.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-07-15 11:43:12 +02:00
Johannes Berg c71420db65 wifi: mac80211: RCU-ify link STA pointers
We need to be able to access these in a race-free way under
traffic while adding/removing them, so RCU-ify the pointers.
This requires passing a link_sta to a lot of functions so
we don't have to do the RCU handling everywhere.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-06-20 12:57:08 +02:00
Johannes Berg cb71f1d136 wifi: mac80211: add sta link addition/removal
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>
2022-06-20 12:56:06 +02:00
Johannes Berg 40a27ea079 wifi: mac80211: make ieee80211_he_cap_ie_to_sta_he_cap() MLO-aware
Add the link_id parameter and adjust the code accordingly.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-06-20 12:55:32 +02:00
Johannes Berg e9aac179ad wifi: mac80211: make some SMPS code MLD-aware
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>
2022-06-20 12:55:30 +02:00
Johannes Berg 6b41f832a2 wifi: mac80211: HT: make ieee80211_ht_cap_ie_to_sta_ht_cap() MLO-aware
Update ieee80211_ht_cap_ie_to_sta_ht_cap() to handle per-link
data.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-06-20 12:55:29 +02:00
Johannes Berg 2b4ad30946 wifi: mac80211: add link_id to eht.c code for MLO
Update the code in eht.c and add the link_id parameter where
necessary.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-06-20 12:55:27 +02:00
Johannes Berg afe0d18190 wifi: mac80211: add link_id to vht.c code for MLO
Update the code in vht.c and add the link_id parameter where
necessary.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-06-20 12:55:25 +02:00
Johannes Berg b4f85443c1 wifi: mac80211: make channel context code MLO-aware
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>
2022-06-20 12:55:15 +02:00
Johannes Berg 7b7090b4c6 wifi: mac80211: split bss_info_changed method
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>
2022-06-20 12:55:09 +02:00
Johannes Berg bfd8403add wifi: mac80211: reorg some iface data structs for MLD
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>
2022-06-20 12:55:06 +02:00
Johannes Berg f276e20b18 wifi: mac80211: move interface config to new struct
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>
2022-06-20 12:55:03 +02:00
Johannes Berg d0a9123ef5 wifi: mac80211: move some future per-link data to bss_conf
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>
2022-06-20 12:55:01 +02:00
Johannes Berg 7b0a0e3c3a wifi: cfg80211: do some rework towards MLO link APIs
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>
2022-06-20 12:54:58 +02:00
Johannes Berg 23a5f0af6f wifi: mac80211: remove cipher scheme support
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>
2022-06-10 15:35:53 +02:00
Jakub Kicinski d353e1a3ba 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
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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>
2022-05-19 13:01:08 -07:00
Johannes Berg 5dfad10812 mac80211: mlme: track assoc_bss/associated separately
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>
2022-05-16 09:16:20 +02:00
Johannes Berg 16d0364c72 mac80211: remove useless bssid copy
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>
2022-05-16 09:15:19 +02:00
Johannes Berg 53da4c45ca mac80211: remove unused argument to ieee80211_sta_connection_lost()
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>
2022-05-16 09:15:04 +02:00
Johannes Berg 926101d2b7 mac80211: mlme: use local SSID copy
There's no need to look it up from the ifmgd->associated
BSS configuration, we already maintain a local copy since
commit b0140fda62 ("mac80211: mlme: save ssid info to
ieee80211_bss_conf while assoc").

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-05-16 09:14:51 +02:00
Johannes Berg c8fe4b0b37 mac80211: use ifmgd->bssid instead of ifmgd->associated->bssid
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>
2022-05-16 09:13:22 +02:00
Johannes Berg f344c58c25 mac80211: mlme: move in RSSI reporting code
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>
2022-05-16 09:12:34 +02:00
Jakub Kicinski 9b19e57a3c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
No conflicts.

Build issue in drivers/net/ethernet/sfc/ptp.c
  54fccfdd7c ("sfc: efx_default_channel_type APIs can be static")
  49e6123c65 ("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>
2022-05-12 16:15:30 -07:00
Muna Sinada 1ca9801686 mac80211: support disabling EHT mode
Allow userspace to disable EHT mode.
This forces EHT capable interfaces to disable during association.

Signed-off-by: Muna Sinada <quic_msinada@quicinc.com>
Signed-off-by: Aloka Dixit <quic_alokad@quicinc.com>
Link: https://lore.kernel.org/r/20220323224636.20211-2-quic_alokad@quicinc.com
[remove stray message change]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-05-04 22:50:03 +02:00
Manikanta Pubbisetty 86af062f40 mac80211: Reset MBSSID parameters upon connection
Currently MBSSID parameters in struct ieee80211_bss_conf
are not reset upon connection. This could be problematic
with some drivers in a scenario where the device first
connects to a non-transmit BSS and then connects to a
transmit BSS of a Multi BSS AP. The MBSSID parameters
which are set after connecting to a non-transmit BSS will
not be reset and the same parameters will be passed on to
the driver during the subsequent connection to a transmit
BSS of a Multi BSS AP.

For example, firmware running on the ath11k device uses the
Multi BSS data for tracking the beacon of a non-transmit BSS
and reports the driver when there is a beacon miss. If we do
not reset the MBSSID parameters during the subsequent
connection to a transmit BSS, then the driver would have
wrong MBSSID data and FW would be looking for an incorrect
BSSID in the MBSSID beacon of a Multi BSS AP and reports
beacon loss leading to an unstable connection.

Reset the MBSSID parameters upon every connection to solve this
problem.

Fixes: 78ac51f815 ("mac80211: support multi-bssid")
Signed-off-by: Manikanta Pubbisetty <quic_mpubbise@quicinc.com>
Link: https://lore.kernel.org/r/20220428052744.27040-1-quic_mpubbise@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-05-04 11:37:46 +02:00