Instead of enabling HW timestamping by default every time a station
is connected, disable it by default and enable it only upon request
for a specific station. HW timestamping can be enabled for only one
peer at a time.
Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230320122330.62b98fbf545b.I450c1017ada7900a71a63d879bb542a08e3166c8@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
As we have a new MLD STA cmd, there will be a different function to
add/remove a station in MLD mode. But both functions will share a
common part. Put this part in a separate function which will be used
later in adding/removing a sta in MLD mode.
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230320122330.d01e0c9ccdc3.I5e9e27c3b363b36209a0ff960d2e59708e7ff0bf@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In iwl_mvm_add_sta() we're initializing the new allocated mvm_sta.
We are setting some fields to zero even though it was allocated with
kzalloc, for the case of HW restart. But in such a case we will never
get to this initializations due to the goto statement that we have in
this case. Remove these initializations.
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230320122330.c0b4d1e986a5.I6959bf1aca74c865e3c1edbf711f5fe8fb8c0c9f@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We have a new STA cmd as part of the new MLD API. There are some
parts of sending the STA cmd which are common to both the old and
the new one. Put this parts in functions which will later be used
to send the new STA cmd.
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230320122330.4da940bd7384.I3a66990fbffe9611b5e41f3686c2aff37ba2eb56@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
For TM/FTM frames, report the hardware timestamps reported by the
fw as part of the RX/TX status. Since the fw reports the timestamps
in a dedicated notification (and not as part of the RX/TX status),
hold the frame until the fw timestamps notification is received.
Timestamping is enabled when a station is connected and disabled
when disconnected. For AP interface, only the first station will
have timestamping enabled since the fw only supports timestamping
for one peer.
Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230320122330.e0392d498101.I9bf12c8ecfb3f17253a13dc48a48647ddd6e7855@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Some recent upstream debugging uncovered the fact that in
iwlwifi, the TXQ list manipulation is racy.
Introduce a new state bit for when the TXQ is completely
ready and can be used without locking, and if that's not
set yet acquire the lock to check everything correctly.
Reviewed-by: Benjamin Berg <benjamin.berg@intel.com>
Tested-by: Jose Ignacio Tornos Martinez <jtornosm@redhat.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This could race if the queue is redirected while full, then
the flushing internally would start it while it's not yet
usable again. Fix it by using two state bits instead of just
one.
Reviewed-by: Benjamin Berg <benjamin.berg@intel.com>
Tested-by: Jose Ignacio Tornos Martinez <jtornosm@redhat.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
As the MLD mode and its new APIs are introduced,
we've decided to add a new ieee80211_ops dedicated for
MLD callbacks. Add the MLD remove_interface() callback
which uses the new MLD APIs.
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230314194113.b87c5c0a4b6b.I631173a73d6ffd7232aa539ea8b356a222fac398@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
As a part of the new MLD FW API changes, we have new commands for STA
related operations (add/remove/aux/disable tx).
Add structures and enum definitions, along with part of the functions
that sends this commands.
This functions will be in used and more will be added in the next patches.
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230314194113.132873ce015c.I7b12a77e5be066730762e6ceeeaa7190293c3df1@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In FW restart scenarios, we allocate the queues from the
iwl_mvm_realloc_queues_after_restart() function, but that
is called before we insert the station ID into our map
(mvm->fw_id_to_mac_id).
However, in all cases where we're actually allocating a
queue for a "real" (not bcast, aux, ...) station we have
the sta pointer already, so just pass it along to use it
instead of looking it up.
This fixes an issue where after restart we only allocated
a queue of size 16 (due to the ordering issue described
above), and thus never got good throughput again since no
aggregates could be formed on transmit.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230314194113.4d70868003e8.I3476fee5c12f5b1af2be5e2f38a9df7d66d02b62@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Due to several bugs caused by timers being re-armed after they are
shutdown and just before they are freed, a new state of timers was added
called "shutdown". After a timer is set to this state, then it can no
longer be re-armed.
The following script was run to find all the trivial locations where
del_timer() or del_timer_sync() is called in the same function that the
object holding the timer is freed. It also ignores any locations where
the timer->function is modified between the del_timer*() and the free(),
as that is not considered a "trivial" case.
This was created by using a coccinelle script and the following
commands:
$ cat timer.cocci
@@
expression ptr, slab;
identifier timer, rfield;
@@
(
- del_timer(&ptr->timer);
+ timer_shutdown(&ptr->timer);
|
- del_timer_sync(&ptr->timer);
+ timer_shutdown_sync(&ptr->timer);
)
... when strict
when != ptr->timer
(
kfree_rcu(ptr, rfield);
|
kmem_cache_free(slab, ptr);
|
kfree(ptr);
)
$ spatch timer.cocci . > /tmp/t.patch
$ patch -p1 < /tmp/t.patch
Link: https://lore.kernel.org/lkml/20221123201306.823305113@linutronix.de/
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Acked-by: Pavel Machek <pavel@ucw.cz> [ LED ]
Acked-by: Kalle Valo <kvalo@kernel.org> [ wireless ]
Acked-by: Paolo Abeni <pabeni@redhat.com> [ networking ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
In order to support MLD, the key API is also changing to have
station masks instead of just the station ID etc. Change the
driver to support this, and add the new code in a new file so
it's more clearly separated.
For now this isn't separated at the mac80211 ops level, which
we wanted to do, but we're calling these functions in a place
when pre-start keys are installed in iwl_mvm_start_ap_ibss(),
and the function has some glue logic to mac80211. We may want
to change that later.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20221102165239.ed9ccd814abc.Iacc7360de68807fbac19e5b67c86504b39cc15df@changeid
BUGs like this are still reproducible:
[ 31.509616] list_add corruption. prev->next should be next (ffff8f8644242300), but was ffff8f86493fd300. (prev=ffff8f86493fd300).
[ 31.521544] ------------[ cut here ]------------
[ 31.526248] kernel BUG at lib/list_debug.c:30!
[ 31.530781] invalid opcode: 0000 [#1] PREEMPT SMP PTI
[ 31.535831] CPU: 1 PID: 626 Comm: wpa_supplicant Not tainted 6.0.0+ #7
[ 31.542450] Hardware name: Dell Inc. Inspiron 660s/0478VN , BIOS A07 08/24/2012
[ 31.550484] RIP: 0010:__list_add_valid.cold+0x3a/0x5b
[ 31.555537] Code: f2 4c 89 c1 48 89 fe 48 c7 c7 28 20 69 89 e8 4c e3 fd ff 0f 0b 48 89 d1 4c 89 c6 4c 89 ca 48 c7 c7 d0 1f 69 89 e8 35 e3 fd ff <0f> 0b 4c 89 c1 48 c7 c7 78 1f 69 89 e8 24 e3 fd ff 0f 0b 48 c7 c7
[ 31.574605] RSP: 0018:ffff9f6f00dc3748 EFLAGS: 00010286
[ 31.579990] RAX: 0000000000000075 RBX: ffff8f8644242080 RCX: 0000000000000000
[ 31.587155] RDX: 0000000000000201 RSI: ffffffff8967862d RDI: 00000000ffffffff
[ 31.594482] RBP: ffff8f86493fd2e8 R08: 0000000000000000 R09: 00000000ffffdfff
[ 31.601735] R10: ffff9f6f00dc3608 R11: ffffffff89f46128 R12: ffff8f86493fd300
[ 31.608986] R13: ffff8f86493fd300 R14: ffff8f8644242300 R15: ffff8f8643dd3f2c
[ 31.616151] FS: 00007f3bb9a707c0(0000) GS:ffff8f865a300000(0000) knlGS:0000000000000000
[ 31.624447] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 31.630286] CR2: 00007fe3647d5600 CR3: 00000001125a6002 CR4: 00000000000606e0
[ 31.637539] Call Trace:
[ 31.639936] <TASK>
[ 31.642143] iwl_mvm_mac_wake_tx_queue+0x71/0x90 [iwlmvm]
[ 31.647569] ieee80211_queue_skb+0x4b6/0x720 [mac80211]
...
So, it is necessary to extend the applied solution with commit 14a3aacf51
("iwlwifi: mvm: fix double list_add at iwl_mvm_mac_wake_tx_queue")
to all other cases where the station queues are invalidated and the related
lists are not emptied. Because, otherwise as before, if some new element is
added later to the list in iwl_mvm_mac_wake_tx_queue, it can match with the
old one and produce the same commented BUG.
That is, in order to avoid this problem completely, we must also remove the
related lists for the other cases when station queues are invalidated.
Fixes: cfbc6c4c5b ("iwlwifi: mvm: support mac80211 TXQs model")
Reported-by: Petr Stourac <pstourac@redhat.com>
Tested-by: Petr Stourac <pstourac@redhat.com>
Signed-off-by: Jose Ignacio Tornos Martinez <jtornosm@redhat.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20221010081611.145027-1-jtornosm@redhat.com
The SMPS power save mode needs to be per-link rather than being shared
for all links. As such, move it into struct ieee80211_link_sta.
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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>
GCC 12 says:
drivers/net/wireless/intel/iwlwifi/mvm/sta.c:1076:37: warning: array subscript -1 is below array bounds of ‘struct iwl_mvm_tid_data[9]’ [-Warray-bounds]
1076 | if (mvmsta->tid_data[tid].state != IWL_AGG_OFF)
| ~~~~~~~~~~~~~~~~^~~~~
Whatever, tid is a bit from for_each_set_bit(), it's clearly unsigned.
Acked-by: Kalle Valo <kvalo@kernel.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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>
Due to some issues found in integration, the command now has
the (old) station mask and TID in modify/remove instead of
the BAID, adjust accordingly.
Since we don't use modify yet (and never will with v1 of the
API), just add v1 remove inside the existing union, and use
that, this way we don't have to duplicate everything, only
the remove code.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20220210181930.bc424f15cc4b.I06d9acae11dc69b2500666f497017a3fd4e2acd5@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Newer firmware versions will support a new queue allocation
command, in order to deal with MLD where multiple stations
are used for a single queue. Add support for the new command.
This requires some refactoring of the queue allocation API,
which now gets
- the station mask instead of the station ID
- the flags without the "enable" flag, since that's no longer
used in the new API
Additionally, this new API now requires that we remove queues
before removing a station, the firmware will no longer do that
internally. Also add support for that.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20220210181930.acbf22ac2b66.I2bf38578c5ca1f7ffb2011a782f772db92fc4965@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
The command ID here is always hard-coded to the same, so we
can remove it. In the future we actually need to make this
configurable, but that doesn't need to be on each call, it
can be done through the transport configuration.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20220210181930.8b352828f767.Ice4c91d8ea3e207914104e72801b87cd7f409ba7@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
With the new ML API, we can't send the BAID removal command to
firmware during hw_restart because it will cause an assertion failure
0x350D because the BAID doesn't exist at that point.
So avoid sending the command if we are performing a hw_restart.
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20220205112029.7b363457e1aa.Ie4634222e6a33451b88e1042c83e9ea28775bd9f@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Due to some rearchitecting inside the firmware, a new BAID
allocation command is being introduced. Support it. Note
that with it the firmware no longer returns "no space" but
will crash instead, so check for that before sending the
command to the firmware.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20220128153014.a89fa3bd9d91.Ibe58c5d9e882dad43aa857aa1c8f54f3358c667b@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
The order of arguments for iwl_cmd_id() is confusing, and the
version is always 0 and thus a useless argument. Prefer the
WIDE_ID() macro (which needs to be a macro due to use in switch
cases etc.) over the iwl_cmd_id() function.
Obviously done with spatch:
@@
expression G, C;
@@
-iwl_cmd_id(C, G, 0)
+WIDE_ID(G, C)
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20220128153014.cc4f9d1a2e9b.Ieb023cd773ea22e819d1ef1c37ae857ecc1a839d@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Since FW is now in charge of timing the channel switch, there is no need
to send the add/modify/remove time event command to fw with every (e)CSA
element.
However, the driver needs to cancel the channel switch if the CS start
notification arrives and it does not know about an ongoing channel switch.
Signed-off-by: Nathan Errera <nathan.errera@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20220128153013.ac3af0ff22c7.Ie87c62047b71b93b12aa80b5dc5391b4798dbe97@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
If we happen to decide an NSSN queue sync (IWL_MVM_RXQ_NSSN_SYNC)
for some remaining packets that are still on the queue, but just
after we've decided to do a delBA (which causes its own queues
sync with IWL_MVM_RXQ_NOTIF_DEL_BA) we can end up with a sequence
of events like this:
CPU 1 CPU 2
remove BA session with baid N
send IWL_MVM_RXQ_NOTIF_DEL_BA
send IWL_MVM_RXQ_NSSN_SYNC
get IWL_MVM_RXQ_NOTIF_DEL_BA
get IWL_MVM_RXQ_NOTIF_DEL_BA
get IWL_MVM_RXQ_NSSN_SYNC
complete IWL_MVM_RXQ_NOTIF_DEL_BA
remove N from baid_map[]
get IWL_MVM_RXQ_NSSN_SYNC
WARN_ON(!baid_map[N])
Thus, there's a race that leads in hitting the WARN_ON, but more
importantly, it's a race that potentially even results in a new
aggregation session getting assigned to baid N.
To fix this, remove the WARN_ON() in the NSSN_SYNC case, we can't
completely protect against hitting this case, so we shouldn't be
warning. However, guard ourselves against BAID reuse by doing yet
another round of queue synchronization after the entry is removed
from the baid_map, so that it cannot be reused with any in-flight
IWL_MVM_RXQ_NSSN_SYNC messages.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20211204083237.44abbbc50f40.I5492600dfe513356555abe2d7df0e2835846e3d8@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
When TVQM is enabled (iwl_mvm_has_new_tx_api() is true), then
queue numbers are just sequentially assigned 0, 1, 2, ...
Prior to TVQM, in DQA, there were some statically allocated
queue numbers:
* IWL_MVM_DQA_AUX_QUEUE == 1,
* both IWL_MVM_DQA_INJECT_MONITOR_QUEUE and
IWL_MVM_DQA_P2P_DEVICE_QUEUE == 2, and
* IWL_MVM_DQA_AP_PROBE_RESP_QUEUE == 9.
Now, these values are assigned to the members mvm->aux_queue,
mvm->snif_queue, mvm->probe_queue and mvm->p2p_dev_queue by
default. Normally, this doesn't really matter, and if TVQM is
in fact available we override them to the real values after
allocating a queue for use there.
However, this allocation doesn't always happen. For example,
for mvm->p2p_dev_queue (== 2) it only happens when the P2P
Device interface is started, if any. If it's not started, the
value in mvm->p2p_dev_queue remains 2. This wouldn't really
matter all that much if it weren't for iwl_mvm_is_static_queue()
which checks a queue number against one of those four static
numbers.
Now, if no P2P Device or monitor interface is added then queue
2 may be dynamically allocated, yet alias mvm->p2p_dev_queue or
mvm->snif_queue, and thus iwl_mvm_is_static_queue() erroneously
returns true for it. If it then gets full, all interface queues
are stopped, instead of just backpressuring against the one TXQ
that's really the only affected one.
This clearly can lead to issues, as everything is stopped even
if just a single TXQ filled its corresponding HW queue, if it
happens to have an appropriate number (2 or 9, AUX is always
reassigned.) Due to a mac80211 bug, this also led to a situation
in which the queues remained stopped across a deauthentication
and then attempts to connect to a new AP started failing, but
that's fixed separately.
Fix all of this by simply initializing the queue numbers to
the invalid value until they're used, if TVQM is enabled, and
also setting them back to that value when the queues are later
freed again.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210802172232.2e47e623f9e2.I9b0830dafbb68ef35b7b8f0f46160abec02ac7d0@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
When installing a (new) key, set the replay counter so that
after FW restart the firmware has the correct value of the
replay counters.
This doesn't have a large effect - for frames that reach
the driver, it will do a replay check, and when installing
a new key, the counter is normally zero to start with (not
for GTK though, if joining the BSS for the first time).
Since this only affects frames handled entirely by the FW,
and that's restricted to a few unicast management frames,
the only affect here is for those after a firmware restart.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210802172232.1cedf2ca7bb6.I2e609c28eaa301436e6740f4f1beca838f69a96a@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
When operating in AP mode with NICs supporting the AP_LINK_PS hw flag,
mac80211 doesn't need to start/stop queueing tx for connected stations
because the FW already handles that.
Signed-off-by: Naftali Goldstein <naftali.goldstein@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210618105614.64df994c8fbb.I0fa5cda3a5f893a396eef30a01522422be359e69@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
When we do queue sync, it's confusing that we have the structures
declared in the FW API header files that aren't really firmware,
and the union is also confusing - especially now in the code that
checks the size on the return.
So rework this: change the type of sync and whether to do it in a
synchronous fashion to arguments, and build the data structure in
the function, so we don't need the union.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210331121101.f62833fd9893.I612d7ac1c655ec4880329360e15d207698c750bc@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
* Check FW notification sizes for robustness;
* Improvements in the NAPI implementation;
* Implement a workaround for CCA-EXT;
* Add new FW API support;
* Fix a CSA bug;
* Implement PHY integration version parsing;
* A bit of refactoring;
* One more CSA bug fix, this time in the AP side;
* Support for new So devices and a bit of reorg;
* Per Platform Antenna Gain (PPAG) fixes and improvements;
* Improvements in the debug framework;
* Some other clean-ups and small fixes.
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Merge tag 'iwlwifi-next-for-kalle-2021-02-05' of git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-next
iwlwifi patches intended for v5.12
* Check FW notification sizes for robustness;
* Improvements in the NAPI implementation;
* Implement a workaround for CCA-EXT;
* Add new FW API support;
* Fix a CSA bug;
* Implement PHY integration version parsing;
* A bit of refactoring;
* One more CSA bug fix, this time in the AP side;
* Support for new So devices and a bit of reorg;
* Per Platform Antenna Gain (PPAG) fixes and improvements;
* Improvements in the debug framework;
* Some other clean-ups and small fixes.
# gpg: Signature made Fri 05 Feb 2021 12:04:21 PM EET using RSA key ID 1A3CC5FA
# gpg: Good signature from "Luciano Roth Coelho (Luca) <luca@coelho.fi>"
# gpg: aka "Luciano Roth Coelho (Intel) <luciano.coelho@intel.com>"
Once the all the stations completed the switch, we need
to clear csa_tx_blocked_vif. This was missing. We also
need to re-enable the broadcast / multicast stations.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210205110447.f5b813753bdb.Id58979b678974c3ccf44d8b381c68165ac55a3d3@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
If the firmware has support, then advertise it to the stack and
send the key down. Since we re-check the protection in the host
anyway, we don't really need to do anything on RX except that we
should drop frames that the firmware _knows_ are replay errors,
since beacon filtering might otherwise result in replays being
possible.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210205110447.f5a3d53301b3.I23e84c9bb0b039d9106a07e9d6847776757f9029@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
In the new api all the flush in the FW is done before we
get the response and in the response we only get the updated
read pointer and all queued packets don't get anymore rx_tx
per packet to free the queued packet, so driver needs to free
all queued packets on flushed queue at once after flush response.
Signed-off-by: Mordechay Goodstein <mordechay.goodstein@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210117130510.4bd0eca8c0ef.I1601aad2eb2cc83f6f73b8ca52be57bb9fd626ab@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Having sta_id not set for aux_sta and snif_sta can potentially lead to a
hard to debug issue in case remove station is called without an add. In
this case sta_id 0, an unrelated regular station, will be removed.
In fact, we do have a FW assert that occures rarely and from the debug
data analysis it looks like sta_id 0 is removed by mistake, though it's
hard to pinpoint the exact flow. The WARN_ON in this patch should help
to find it.
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/iwlwifi.20210122144849.5dc6dd9b22d5.I2add1b5ad24d0d0a221de79d439c09f88fcaf15d@changeid
In preparation to enable -Wimplicit-fallthrough for Clang, fix multiple
warnings by explicitly using the fallthrough pseudo-keyword as a
replacement for a number of "fall through" markings.
Notice that Clang doesn't recognize "fall through" comments as
implicit fall-through.
Link: https://github.com/KSPP/linux/issues/115
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20201117135053.GA13248@embeddedor
Add support to the 6GHz band (aka. Ultra High Band or UHB). This
allows us to scan and connect to channels in that band, including all
the relevant features, such as preferred scan channels, colocated
channels etc.
Co-developed-by: Haim Dreyfuss <haim.dreyfuss@intel.com>
Signed-off-by: Haim Dreyfuss <haim.dreyfuss@intel.com>
Co-developed-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Co-developed-by: Tova Mussai <tova.mussai@intel.com>
Signed-off-by: Tova Mussai <tova.mussai@intel.com>
Co-developed-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Co-developed-by: Tali Levi Rovinsky <Tali.Levi-rovinsky@intel.com>
Signed-off-by: Tali Levi Rovinsky <Tali.Levi-rovinsky@intel.com>
Co-developed-by: Avraham Stern <avraham.stern@intel.com>
Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Co-developed-by: Ayala Beker <ayala.beker@intel.com>
Signed-off-by: Ayala Beker <ayala.beker@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20201210000657.0fdbfc3d7352.Idb648536faf21716e2ab2c6d6890d3e49f719cd3@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Currently, our max tpt is limited to max HT A-MPDU for LB,
and max VHT A-MPDU for HB. Configure HE exponent value correctly to
achieve HE max A-MPDU, both on LB and HB.
Signed-off-by: Mordechay Goodstein <mordechay.goodstein@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/iwlwifi.20201107104557.4486852ebb56.I9eb0d028e31f183597fb90120e7d4ca87e0dd6cb@changeid
ADD_STA_CMD_API_S ver 12 was added in order to properly support
auxiliary activities in CDB NICs. In the new version we don't need
to allocate an aux station at initialization, instead we add an
aux station only when an auxiliary activity that requires a dedicated Tx
queue is needed. For now the only case we need this kind of activity is
when using hot spot 2.0
Signed-off-by: Nathan Errera <nathan.errera@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/iwlwifi.20201008180656.700e6e2e3077.Icdd807b6a3ad3fed806449ea0a13f856aa20e632@changeid
As part of changes made to properly support auxiliary activities in CDB
NICs, an aux sta will be added when using hot spot 2.0 and will need
to be removed when roc flow is done.
In order to do so, prepare the roc_done_wk to work synchronously as the
rm_aux_sta is a SYNC command.
Since now all of th iwl_mvm_flush_sta function are using it sync,
removed the flag argument from the function.
Signed-off-by: Nathan Errera <nathan.errera@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/iwlwifi.20201008180656.71b441c8b682.Ia1d216cb680308b91d6da9f73e23ae9f4baac79f@changeid
We are printing the same thing twice, "Enabling TXQ #%d". Previously
the second print was including more information, but now it only
prints the queue number, which is already in the first print. Remove
the redundant one.
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20200930191738.1c22d1bc0a88.I24e57317bdddc6c72f69725e1d95683a935e893d@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
A FTM responder may do PASN authentication with unassociated stations
to allow secure ranging. In this case, the driver will add an internal
station and install the TK so the FW will accept protected FTM
request frames from this station and will send a protected FTM
response frame.
In addition, the driver needs to configure the HLTK to the FW so
the FW can derive the secure LTF bits. This is left for a later
patch since it is not yet supported by the FW.
Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20200911204056.c915b44ad7dd.I72ef7f9753964555561c27ec503241105eddb14e@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
The UDP reuseport conflict was a little bit tricky.
The net-next code, via bpf-next, extracted the reuseport handling
into a helper so that the BPF sk lookup code could invoke it.
At the same time, the logic for reuseport handling of unconnected
sockets changed via commit efc6b6f6c3
which changed the logic to carry on the reuseport result into the
rest of the lookup loop if we do not return immediately.
This requires moving the reuseport_has_conns() logic into the callers.
While we are here, get rid of inline directives as they do not belong
in foo.c files.
The other changes were cases of more straightforward overlapping
modifications.
Signed-off-by: David S. Miller <davem@davemloft.net>
We can currently end up transmitting on an unallocated queue, if
the allocation fails. Stop doing that, by simply not transmitting.
We don't have any better strategy here, unfortunately, but the
previous commits make that much less likely.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20200425130140.dcf1801f25ef.I6d71e13ea042765800f2ee41401b8eb282527c34@changeid
We currently attempt to allocate queues that are 512 entries long,
but that requires 32 KiB memory, which may not be available, at
least not contiguously. If we fail to allocate, attempt to use a
smaller queue all the way down to 16 entries (which fit into a
single page).
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20200425130140.c8548d7cc08a.I5059c410e628726cbce98d6311b690c632d00f97@changeid
The function iwl_mvm_remove_inactive_tids() returns bool, so we
should just check "if (ret)", not "if (ret >= 0)" (which would
do nothing useful here). We obviously therefore cannot use the
return value of the function for the free_queue, we need to use
the queue (i) we're currently dealing with instead.
Cc: stable@vger.kernel.org # v5.4+
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/iwlwifi.20200417100405.9d862ed72535.I9e27ccc3ee3c8855fc13682592b571581925dfbd@changeid
Due to some hardware issues, queue 31 isn't usable on devices that have
32 queues (7000, 8000, 9000 families), which is correctly reflected in
the configuration and TX queue initialization.
However, the firmware API and queue allocation code assumes that there
are 32 queues, and if something actually attempts to use #31 this leads
to a NULL-pointer dereference since it's not allocated.
Fix this by limiting to 31 in the IWL_MVM_DQA_MAX_DATA_QUEUE, and also
add some code to catch this earlier in the future, if the configuration
changes perhaps.
Cc: stable@vger.kernel.org # v4.9+
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/iwlwifi.20200417100405.98a79be2db6a.I3a4af6b03b87a6bc18db9b1ff9a812f397bee1fc@changeid
The IGTK keys are only removed by mac80211 after it has already
removed the AP station. This causes the driver to throw an error
because mac80211 is trying to remove the IGTK when the station doesn't
exist anymore.
The firmware is aware that the station has been removed and can deal
with it the next time we try to add an IGTK for a station, so we
shouldn't try to remove the key if the station ID is
IWL_MVM_INVALID_STA. Do this by removing the check for mvm_sta before
calling iwl_mvm_send_sta_igtk() and check return from that function
gracefully if the station ID is invalid.
Cc: stable@vger.kernel.org # 4.12+
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
The only slightly tricky merge conflict was the netdevsim because the
mutex locking fix overlapped a lot of driver reload reorganization.
The rest were (relatively) trivial in nature.
Signed-off-by: David S. Miller <davem@davemloft.net>
iwl_mvm_tvqm_enable_txq() can return an error, notably if unable
to allocate memory for the queue. Handle this error throughout,
avoiding storing the invalid value into a u16 which later leads
to a disable of an invalid queue ("queue 65524 not used", where
65524 is just -ENOMEM in a u16).
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
There really is no need to make drivers call the
ieee80211_start_tx_ba_cb_irqsafe() function and then
schedule the worker if all we want is to set a bit.
Add a new return value (that was previously considered
invalid) to indicate that the driver is immediately
ready for the session, and make drivers use it. The
only drivers that remain different are the Intel ones
as they need to negotiate more with the firmware.
Link: https://lore.kernel.org/r/1570007543-I152912660131cbab2e5d80b4218238c20f8a06e5@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Stop accessing the trans configuration via the iwl_cfg structure and
always access it via the iwl_trans structure. This completes the
requirements to disassociate the trans-specific configuration from the
rest of the configuration.
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Add a pointer to the iwl_trans structure and point it to the trans
part of the cfg. This is the first step in disassociating the trans
configuration from the rest of the configuration.
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
In order to be able to select the cfg depending on the HW revision or
on the RF ID, we need to set up the trans before selecting the cfg.
To do so, move the elements from cfg that are needed by
iwl_trans_alloc() to a separate struct at the top of the cfg, so it
can be used by other cfg types as well, before selecting the rest of
the configuration.
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
We're now left with a status bit that is never set and a few
other leftovers.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
This variable read, but never set. Remove it.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
These static functions are only used after their definition,
so we don't need the forward declarations.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
The solution with the worker still had a bug, as in order
to get sta, rcu_read_lock should be used and thus no mutex
can be used inside iwl_mvm_rs_rate_init.
Also, spin_lock is a simpler solution, no need to spawn a
dedicated worker.
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The only place where the command was sent as SYNC is during
init and this is not really critical. This change is required
for replacing RS mutex with a spinlock (in the subsequent patch),
since SYNC comamnd requres sleeping and thus the flow cannot
be done when holding a spinlock.
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We will need a new type of synchronization message going
through all the RSS queues. Prepare the ground for this.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Rate perform uses the lq_sta table to calculate the next rate to scale
while rate init resets the same table,
Rate perform is done in soft irq context in parallel to rate init
that can be called in case we are doing changes like AP changes BW
or moving state for auth to assoc.
Signed-off-by: Mordechay Goodstein <mordechay.goodstein@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When building with -Wsometimes-uninitialized, Clang warns:
drivers/net/wireless/intel/iwlwifi/mvm/sta.c:2114:12: warning: variable
'queue' is used uninitialized whenever 'if' condition is false
[-Wsometimes-uninitialized]
Clang can't evaluate at this point that WARN(1, ...) always returns true
because __ret_warn_on is defined as !!(condition), which isn't
immediately evaluated as 1. Change this branch to else so that it's
clear to Clang that we intend to bail out here.
Link: https://github.com/ClangBuiltLinux/linux/issues/399
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
[added a few more braces]
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
AX210 devices support 256 BA (256 MPDUs in an AMPDU).
The firmware requires that the number of TFDs will be
minimum twice as big as the BA size (2 * 256 = 512).
Signed-off-by: Shaul Triebitz <shaul.triebitz@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Nothing really special standing out this time, iwlwifi being the most
active driver.
Major changes:
iwlwifi
* send NO_DATA events so they can be captured in radiotap
* support for multiple BSSID
* support for some new FW API versions
* support new hardware
* debugfs cleanups by Greg-KH
qtnfmac
* allow each MAC to specify its own regulatory rules
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Merge tag 'wireless-drivers-next-for-davem-2019-04-18' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next
Kalle Valo says:
====================
wireless-drivers-next patches for 5.2
Nothing really special standing out this time, iwlwifi being the most
active driver.
Major changes:
iwlwifi
* send NO_DATA events so they can be captured in radiotap
* support for multiple BSSID
* support for some new FW API versions
* support new hardware
* debugfs cleanups by Greg-KH
qtnfmac
* allow each MAC to specify its own regulatory rules
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Back in commit 4d339989ac ("iwlwifi: mvm: support ibss in dqa mode")
we changed queue selection for IBSS to be:
if (ieee80211_is_probe_resp(fc) || ieee80211_is_auth(fc) ||
ieee80211_is_deauth(fc))
return IWL_MVM_DQA_AP_PROBE_RESP_QUEUE;
if (info->hw_queue == info->control.vif->cab_queue)
return info->hw_queue;
return IWL_MVM_DQA_AP_PROBE_RESP_QUEUE;
Clearly, the thought at the time must've been that mac80211 will
select the hw_queue as the cab_queue, so that we'll return and use
that, where we store the multicast queue for IBSS. This, however,
isn't true because mac80211 doesn't implement powersave for IBSS
and thus selects the normal IBSS interface AC queue (best effort).
This therefore always used the probe response queue, which maps to
the BE FIFO.
In commit cfbc6c4c5b ("iwlwifi: mvm: support mac80211 TXQs model")
we rethought this code, and as a consequence now started mapping the
multicast traffic to the multicast hardware queue since we no longer
relied on mac80211 selecting the queue, doing it ourselves instead.
This queue is mapped to the MCAST FIFO. however, this isn't actually
enabled/controlled by the firmware in IBSS mode because we don't
implement powersave, and frames from this queue can never go out in
this case.
Therefore, we got queue hang reports such as
https://bugzilla.kernel.org/show_bug.cgi?id=201707
Fix this by mapping the multicast queue to the BE FIFO in IBSS so
that all the frames can go out.
Fixes: cfbc6c4c5b ("iwlwifi: mvm: support mac80211 TXQs model")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
iwl_mvm_tx_mpdu() may run from iwl_mvm_add_new_dqa_stream_wk(), where
soft-IRQs aren't disabled. In this case, it may hold the station lock
and be interrupted by a soft-IRQ that also wants to acquire said lock,
leading to a deadlock.
Fix it by disabling soft-IRQs in iwl_mvm_add_new_dqa_stream_wk().
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
In the old days, we could transmit with HW crypto with an arbitrary
key by filling it into TX_CMD. This was broken first with the advent
of CCMP/GCMP-256 keys which don't fit there.
This was broken *again* with the newer TX_CMD format on 22560+,
where we simply cannot pass key material anymore. However, we forgot
to update all the cases when we get a key from mac80211 and don't
program it into the hardware but still return 0 for HW crypto on TX.
In AP mode with WEP, we tried to fix this by programming the keys
separately for each station later, but this ultimately turns out to
be buggy, for example now it leaks memory when we have more than one
WEP key.
Fix this by simply using only SW crypto for WEP in newer devices by
returning -EOPNOTSUPP instead of trying to program WEP keys later.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Add new device family AX210.
Make the needed changes for this family.
Signed-off-by: Shaul Triebitz <shaul.triebitz@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
In iwl_mvm_sta_alloc_queue_tvqm(), we know that we have a
station, so no need to check it.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Recently we started to send the WEP keys to the firmware so
that we could use hardware Tx encryption also on newer
devices that require the keys to be installed in the firmware
for encryption (as opposed to older devices that can get
the key in the Tx command for each Tx).
When we implemented that, we forgot to remove the key when
we remove a station leading to a situation where a station
that connects and disconnects a lot of times exhausts the
key database inside the firmware.
A fix was made for that, but we always removed the same
key: mvmvif->ap_wep_key which means that we removed the
same key entry in the firmware. This can make sense since
in WEP, the key is the same for all the stations, but the
internal implementation of iwl_mvm_set_sta_key and
iwl_mvm_remove_sta_key assumes that each station uses a
different key in the firmware's key database.
So now we got to the situation where we have a single
ieee80211_key_conf instance that means, a single
ieee80211_key_conf.hw_key_idx index for several stations
and hence for several keys.
ieee80211_key_conf.hw_key_idx is set to 0 when the first
station associates, and then it is overwritten to 1 when
the second station associates which is a buggy of course.
This led to the following message upon the removal of the
second station:
iwlwifi 0000:00:03.0: offset 1 not used in fw key table.
WARNING: CPU: 2 PID: 27883 at net/mac80211/sta_info.c:1122 __sta_info_destroy_part2+0x16b/0x180 [mac80211]
RIP: 0010:__sta_info_destroy_part2+0x16b/0x180 [mac80211]
Call Trace:
__sta_info_destroy+0x2a/0x40 [mac80211]
sta_info_destroy_addr_bss+0x38/0x60 [mac80211]
ieee80211_del_station+0x1d/0x30 [mac80211]
nl80211_del_station+0xe0/0x1f0 [cfg80211]
Fix this by copying the ieee80211_key_conf structure for
each and every station. This is the easiest way to properly
remove the keys with the right index. Another solution
would have been to allow several stations to use the same
key offset in the firmware. That would require to change
the way we track keys in iwlmvm and not really worth it.
Also, maintain correctly fw_key_table when we add a key
for the multicast station.
Remove the key when we remove the multicast station.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Fixes: 337bfc9881 ("iwlwifi: mvm: set wep key for all stations in soft ap mode")
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Simplify some return conditions found by running a semantic patch
to detect unnecessary assignments to local variables.
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
TX path lock was introduced in order to prevent out of order
invocations of TX.
This can happen in the following flow:
TX path invoked from net dev
Packet dequeued
TX path invoked from RX path
Packet dequeued
Packet TXed
Packet TXed
However, we don't really need a lock. If TX path is already
invoked from some location, other paths can simply abort their
execution, instead of waiting to the first path to finish, and
then discover queue is (likely) empty or stopped.
Replace the lock with an atomic variable to track TX ownership.
This simplifies the locking dependencies between RX and TX paths,
and should improve performance.
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
The value in txq_id can be out of array scope,
validate it before accessing the array.
Signed-off-by: Mordechay Goodstein <mordechay.goodstein@intel.com>
Fixes: cf961e1662 ("iwlwifi: mvm: support dqa-mode agg on non-shared queue")
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Move to use the new mac80211 TXQs implementation. This has
quite a few benefits for us. We can get rid of the awkward
mapping of DQA to mac80211 queues. We can stop buffering
traffic while waiting for the queue to be allocated. We can
also use mac80211 AMSDUs instead of building it ourselves.
The usage is pretty simple:
Each ieee80211_txq contains iwl_mvm_txq. There is such a
queue for each TID, and one for management frames. We keep
having static AP queues for probes and non-bufferable MMPDUs,
along with broadcast and multicast queues. Those are being
used from the "old" TX invocation path - iwl_mvm_mac_tx.
When there is a new frame in a TXQ, iwl_mvm_mac_wake_tx is
being called, and either invokes the TX path, or allocates
the queue if it does not exist.
Most of the TX path is left untouched, although we can consider
cleaning it up some more, for example get rid of the duplication
of txq_id in both iwl_mvm_txq and iwl_mvm_dqa_txq_info.
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Sometimes, due to SCD bug, we need to start the queue with an
higher SSN. The queue allocation function currently increments
the SSN in the packet itself, but it is pointless, since this
value is overridden later by iwl_mvm_tx_mpdu with the value
from mvmsta->tid_data[tid].seq_number. Updating tid data is
sufficient.
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
If tx fails during connection establishment, try another antenna for
the next tx. This will increase the chance to establish connection if
one of the antennas is blocked. Note that the antenna is toggled even
when failing to tx data frames since connection establishment may use
EAPOLs for 802.1X authentication/ 4 way handshake.
Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
All the queue management code runs under mvm->mutex, so there are
only very few cases of accessing the data structures without it:
* TX path, which doesn't take any locks anyway
* iwl_mvm_wake_sw_queue() and iwl_mvm_stop_sw_queue() where we
just (atomically) read a bitmap, so the lock isn't needed.
Therefore, we can remove the spinlock. This enables some cleanup
in the ugly locking in iwl_mvm_inactivity_check().
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
When we mark a TID as no longer having a queue, there's no
guarantee the TX path isn't using this txq_id right now,
having accessed it just before we reset the value. To fix
this, add synchronize_net() when we change the TIDs from
having a queue to not having one, so that we can then be
sure that the TX path is no longer accessing that queue.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
We don't really need this state: instead of having an inactive
state where we can awaken zombie queues again if needed, just
keep them in their normal state unless a new queue is actually
needed and there's no other way of getting one.
We do this here by making the inactivity check not free queues
unless instructed that we now really need to allocate one to a
specific station, and in that case it'll just free the queue
immediately, without doing any inactivity step inbetween.
The only downside is a little bit more processing in this case,
but the code complexity is lower.
Additionally, this fixes a corner case: due to the way the code
worked, we could only ever reuse an inactive queue if it was
the reserved queue for a station, as iwl_mvm_find_free_queue()
would never consider returning an inactive queue.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
We want to call iwl_mvm_inactivity_check() from here in the
next patch, so need to move the code down to be able to.
Fix a minor checkpatch complaint while at it.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
This function is only used in the file where it's declared,
so just make it static.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Instead of iterating all the queues after having potentially
changed some queue configurations, rechecking if that was done,
mark the ones that do need a TID change explicitly in a bitmap
and use that to send the change to the firmware.
While at it, also rename iwl_mvm_change_queue_owner() to
iwl_mvm_change_queue_tid() since that's more obvious - the
"kind" of owner isn't immediately clear right now.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Avraham Stern
Miri Korenblit
Johannes Berg
Steven Rostedt (Google)
Jose Ignacio Tornos Martinez
Benjamin Berg
Jakub Kicinski
Sriram R
Luca Coelho
Emmanuel Grumbach
Mordechay Goodstein
Nathan Errera
Ilan Peer
Naftali Goldstein
Kalle Valo
Gregory Greenman
Gustavo A. R. Silva
David S. Miller
YueHaibing
Sharon
Nathan Chancellor
Shaul Triebitz