- 11 Sep, 2023 40 commits
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Johannes Berg authored
Mostly remove kernel-doc comment annotation since the comments really aren't kernel-doc, and fix a few other places. Signed-off-by:
Johannes Berg <johannes.berg@intel.com> Signed-off-by:
Gregory Greenman <gregory.greenman@intel.com> Link: https://lore.kernel.org/r/20230830112059.7178fb7c96fb.I6af1f291e306c50a3c4f5afcdc2ba0bbd4bea01f@changeidSigned-off-by:
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Johannes Berg authored
Fix the kernel-doc annotations here, adding the trans parameter and fixing the syntax. Signed-off-by:
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Miri Korenblit authored
Don't use variable err uninitialized. The reason for removing the check instead of initializing it in the beginning of the function is because that way static checkers will be able to catch issues if we do something wrong in the future. Fixes: bf976c81 ("wifi: iwlwifi: mvm: implement link change ops") Signed-off-by:
Miri Korenblit <miriam.rachel.korenblit@intel.com> Signed-off-by:
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Johannes Berg authored
Fix kernel-doc issues. Signed-off-by:
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Emmanuel Grumbach authored
In case the user sets the enable_ini to some preset, we want to honor the value. Remove the ops to set the value of the module parameter is runtime, we don't want to allow to modify the value in runtime since we configure the firmware once at the beginning on its life. Fixes: b49c2b25 ("iwlwifi: Configure FW debug preset via module param.") Signed-off-by:
Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by:
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Johannes Berg authored
If there's an alternative link to use while the CSA is in progress, there's no need to disconnect since another link is still usable during the switching time. Change the code here to handle that accordingly. Signed-off-by:
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Johannes Berg authored
In the spec, CSA is defined roughly as follows: - TBTT x: beacon with CSA, count=n (old channel) - TBTT x+1: beacon with CSA, count=n-1 (old channel) - TBTT x+n-1: beacon with CSA, count=1 (old channel) "A Channel Switch Count field set to 1 indicates that the switch occurs immediately before the next TBTT. - TBTT x+n: beacon without CSA (new channel) When we detect it, we currently schedule the CSA event to be at 10 TUs before TBTT x+n-1, for a beacon interval, to give us quiet time. When this event *starts*, we currently notify mac80211 that the channel switch happened, which causes us to add a session protection event to listen for the first beacon (and enable TX etc. when that arrives). We don't even ask for a notification when this event ends so the code that handles that is effectively dead code. The session protection duration is 3 beacon intervals, scheduled at 10 TU before TBTT x+n-1. It will thus end just before TBTT x+n+2. Unfortunately, if the AP doesn't transmit or we miss just the first two beacons on the new channel, then this will cause us to disconnect. Or even just one, if the AP isn't quite aligned with the TBTT after the switch. However, listening to the _end_ of the time event isn't what we want either, because we want all the new PHY and other config that needs to come from mac80211 to start early, so we have a head-start for the new channel, since we're not going to use the old one anyway for this time. So since we don't really have anything better to do at this time, and this is relatively rare, just make the session protection use 5x the beacon interval instead of just 3x, so it's more likely we catch a beacon even if the AP neglected to send it, or we just miss it. Signed-off-by:
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Emmanuel Grumbach authored
Pass the right link_id to ieee80211_chswitch_done. Use the link_conf parameter passed to post_channel_switch() to get the right ap_sta_id. Signed-off-by:
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Johannes Berg authored
Use the correct link ID and per-link puncturing data instead of hardcoding link ID 0 and using deflink puncturing. Signed-off-by:
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Ilan Peer authored
When user space transmits a management frame it is expected to use the MLD addresses if the connection is an MLD one. Thus, in case the management Tx is using the MLD address and no channel is configured off-channel should not be used (as one of the active links would be used). Signed-off-by:
Ilan Peer <ilan.peer@intel.com> Signed-off-by:
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Johannes Berg authored
The code that sets up the assoc link will currently take the BSS element data from the beacon only. This is correct for some of the data, notably the timing and the "have_beacon", but all the data about MBSSID and EHT really doesn't need to be taken from there, and if the EHT puncturing is misconfigured on the AP but we didn't receive a beacon yet, this causes us to connect but immediately disconnect upon receiving the first beacon, rather than connecting without EHT in the first place. Change the code to take MBSSID and EHT data also from the probe response, for a better picture of what the BSS capabilities are and to avoid that EHT puncturing problem. Signed-off-by:
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Ilan Peer authored
To ease debugging, mostly in cases that authentication fails. Signed-off-by:
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Johannes Berg authored
During my refactoring I wanted to get rid of the switch, but replaced it with the wrong calculation. Fix that. Fixes: 175ad2ec ("wifi: mac80211: limit A-MSDU subframes for client too") Reported-by:
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Johannes Berg authored
Clean up kernel-doc in hwsim's header file. Signed-off-by:
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Johannes Berg authored
Clean up the kernel-doc comments in reg.h. Signed-off-by:
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Johannes Berg authored
There are various kernel-doc issues here, fix them. Signed-off-by:
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Johannes Berg authored
This just causes kernel-doc to complain at this spot, but isn't actually needed anyway, so remove it. Signed-off-by:
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Benjamin Berg authored
The sta info needs to be inserted before its links may be modified. Add a few warnings to prevent accidental usage of these functions. Signed-off-by:
Benjamin Berg <benjamin.berg@intel.com> Signed-off-by:
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Benjamin Berg authored
This function will be used by the kunit tests within cfg80211. As it is generally useful, move it from mac80211 to cfg80211. Signed-off-by:
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Johannes Berg authored
Add a unit test for the parsing of a fragmented sta profile sub-element inside a fragmented multi-link element. Signed-off-by:
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Johannes Berg authored
Add a couple of tests for element defragmentation, to see that the function works correctly. Signed-off-by:
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Johannes Berg authored
If a fragment is the last element, it's erroneously not accepted. Fix that. Fixes: f837a653 ("wifi: cfg80211: add element defragmentation helper") Signed-off-by:
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Emmanuel Grumbach authored
This allows to finalize the CSA per link. In case the switch didn't work, tear down the MLD connection. Also pass the ieee80211_bss_conf to post_channel_switch to let the driver know which link completed the switch. Signed-off-by:
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Johannes Berg authored
In mesh_fast_tx_flush_addr() we already hold the lock, so don't need additional hashtable RCU protection. Use the rhashtable_lookup_fast() variant to avoid RCU protection warnings. Fixes: d5edb9ae ("wifi: mac80211: mesh fast xmit support") Signed-off-by:
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Johannes Berg authored
There were are a number of cases in mac80211 and iwlwifi (at least) that used the sband->iftype_data pointer directly, instead of using the accessors to find the right array entry to use. Make sparse warn when such a thing is done. To not have a lot of casts, add two helper functions/macros - ieee80211_set_sband_iftype_data() - for_each_sband_iftype_data() Signed-off-by: -
Johannes Berg authored
As previously reported by Alexander, whose commit 69403bad ("wifi: mac80211: sdata can be NULL during AMPDU start") I'm reverting as part of this commit, there's a race between station destruction and aggregation setup, where the aggregation setup can happen while the station is being removed and queue the work after ieee80211_sta_tear_down_BA_sessions() has already run in __sta_info_destroy_part1(), and thus the worker will run with a now freed station. In his case, this manifested in a NULL sdata pointer, but really there's no guarantee whatsoever. The real issue seems to be that it's possible at all to have a situation where this occurs - we want to stop the BA sessions when doing _part1, but we cannot be sure, and WLAN_STA_BLOCK_BA isn't necessarily effective since we don't know that the setup isn't concurrently running and already got past the check. Simply call ieee80211_sta_tear_down_BA_sessions() again in the second part of station destruction, since at that point really nothing else can hold a reference to the station any more. Also revert the sdata checks since those are just misleading at this point. Signed-off-by:
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Dmitry Antipov authored
When compiling with clang 16.0.6 and CONFIG_FORTIFY_SOURCE=y, I've noticed the following (somewhat confusing due to absence of an actual source code location): In file included from drivers/net/wireless/virtual/mac80211_hwsim.c:18: In file included from ./include/linux/slab.h:16: In file included from ./include/linux/gfp.h:7: In file included from ./include/linux/mmzone.h:8: In file included from ./include/linux/spinlock.h:56: In file included from ./include/linux/preempt.h:79: In file included from ./arch/x86/include/asm/preempt.h:9: In file included from ./include/linux/thread_info.h:60: In file included from ./arch/x86/include/asm/thread_info.h:53: In file included from ./arch/x86/include/asm/cpufeature.h:5: In file included from ./arch/x86/include/asm/processor.h:23: In file included from ./arch/x86/include/asm/msr.h:11: In file included from ./arch/x86/include/asm/cpumask.h:5: In file included from ./include/linux/cpumask.h:12: In file included from ./include/linux/bitmap.h:11: In file included from ./include/linux/string.h:254: ./include/linux/fortify-string.h:592:4: warning: call to '__read_overflow2_field' declared with 'warning' attribute: detected read beyond size of field (2nd parameter); maybe use struct_group()? [-Wattribute-warning] __read_overflow2_field(q_size_field, size); The compiler actually complains on 'mac80211_hwsim_get_et_strings()' where fortification logic inteprets call to 'memcpy()' as an attempt to copy the whole 'mac80211_hwsim_gstrings_stats' array from its first member and so issues an overread warning. This warning may be silenced by passing an address of the whole array and not the first member to 'memcpy()'. Signed-off-by:Dmitry Antipov <dmantipov@yandex.ru> Link: https://lore.kernel.org/r/20230829094140.234636-1-dmantipov@yandex.ruSigned-off-by:
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Johannes Berg authored
We currently call ieee80211_txq_teardown_flows() as part of ieee80211_remove_interfaces(), but that's not really right in case of HW registration failures, specifically rate control. Call it separately to fix that issue. Reported-by:
Zhengchao Shao <shaozhengchao@huawei.com> Signed-off-by:
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Jeff Johnson authored
Currently struct ieee80211_tim_ie defines: u8 virtual_map[1]; Per the guidance in [1] change this to be a flexible array. Per the discussion in [2] wrap the virtual_map in a union with a u8 item in order to preserve the existing expectation that the virtual_map must contain at least one octet (at least when used in a non-S1G PPDU). This means that no driver changes are required. [1] https://docs.kernel.org/process/deprecated.html#zero-length-and-one-element-arrays [2] https://lore.kernel.org/linux-wireless/202308301529.AC90A9EF98@keescook/Suggested-by:
Kees Cook <keescook@chromium.org> Signed-off-by:
Jeff Johnson <quic_jjohnson@quicinc.com> Reviewed-by:
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Johannes Berg authored
Since we're now protecting everything with the wiphy mutex (and were really using it for almost everything before), there's no longer any real reason to have a separate wdev mutex. It may feel better, but really has no value. Signed-off-by: -
Johannes Berg authored
Drivers might plausibly want to have this, but also the locking assertions will need it later. Signed-off-by: -
Johannes Berg authored
We now hold the wiphy mutex everywhere that we use or needed the iflist_mtx, so we don't need this mutex any more in mac80211. However, drivers may also iterate, and in some cases (e.g. mt76) do so from high-priority contexts. Thus, keep the mutex around but remove its usage in mac80211 apart from those driver-visible parts that are still needed. Most of this change was done automatically with spatch, with the parts that are still needed as described above reverted manually. Signed-off-by: -
Johannes Berg authored
We now hold the wiphy mutex everywhere that we use or needed the local->mtx, so we don't need this mutex any more. Remove it. Most of this change was done automatically with spatch. Signed-off-by: -
Johannes Berg authored
We now hold the wiphy mutex everywhere that we use or needed the A-MPDU locking, so we don't need this mutex any more. Remove it. Most of this change was done automatically with spatch. Signed-off-by: -
Johannes Berg authored
We now hold the wiphy mutex everywhere that we use or needed the chanctx_mtx, so we don't need this mutex any more. Remove it. Most of this change was done automatically with spatch. Signed-off-by: -
Johannes Berg authored
We now hold the wiphy mutex everywhere that we use or needed the key_mtx, so we don't need this mutex any more. Remove it. Most of this change was done automatically with spatch. Signed-off-by: -
Johannes Berg authored
We now hold the wiphy mutex everywhere that we use or needed the sta_mtx, so we don't need this mutex any more. Remove it. Most of this change was done automatically with spatch. Signed-off-by: -
Johannes Berg authored
We want to ensure everything holds the wiphy lock, so also extend that to the MAC change callback. Signed-off-by: -
Johannes Berg authored
We want to extend the wiphy locking to the interface list, so move that into the section locked with the wiphy lock. Signed-off-by: -
Johannes Berg authored
We want to replace the locking in mac80211 by just the wiphy mutex, so hold the lock here around concurrency checks for the future where the chanctx_mtx used inside goes away. Signed-off-by:
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