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2024-04-19thermal/debugfs: Add missing count increment to thermal_debug_tz_trip_up()Rafael J. Wysocki1-0/+1
The count field in struct trip_stats, representing the number of times the zone temperature was above the trip point, needs to be incremented in thermal_debug_tz_trip_up(), for two reasons. First, if a trip point is crossed on the way up for the first time, thermal_debug_update_temp() called from update_temperature() does not see it because it has not been added to trips_crossed[] array in the thermal zone's struct tz_debugfs object yet. Therefore, when thermal_debug_tz_trip_up() is called after that, the trip point's count value is 0, and the attempt to divide by it during the average temperature computation leads to a divide error which causes the kernel to crash. Setting the count to 1 before the division by incrementing it fixes this problem. Second, if a trip point is crossed on the way up, but it has been crossed on the way up already before, its count value needs to be incremented to make a record of the fact that the zone temperature is above the trip now. Without doing that, if the mitigations applied after crossing the trip cause the zone temperature to drop below its threshold, the count will not be updated for this episode at all and the average temperature in the trip statistics record will be somewhat higher than it should be. Fixes: 7ef01f228c9f ("thermal/debugfs: Add thermal debugfs information for mitigation episodes") Cc :6.8+ <stable@vger.kernel.org> # 6.8+ Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-04-19vxlan: drop packets from invalid src-addressDavid Bauer1-0/+4
The VXLAN driver currently does not check if the inner layer2 source-address is valid. In case source-address snooping/learning is enabled, a entry in the FDB for the invalid address is created with the layer3 address of the tunnel endpoint. If the frame happens to have a non-unicast address set, all this non-unicast traffic is subsequently not flooded to the tunnel network but sent to the learnt host in the FDB. To make matters worse, this FDB entry does not expire. Apply the same filtering for packets as it is done for bridges. This not only drops these invalid packets but avoids them from being learnt into the FDB. Fixes: d342894c5d2f ("vxlan: virtual extensible lan") Suggested-by: Ido Schimmel <idosch@nvidia.com> Signed-off-by: David Bauer <mail@david-bauer.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-04-19Merge branch 'net-neigh-rcu'David S. Miller1-32/+36
Eric Dumazet says: ==================== neighbour: convert neigh_dump_info() to RCU Remove RTNL requirement for "ip neighbour show" command. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2024-04-19neighbour: no longer hold RTNL in neigh_dump_info()Eric Dumazet1-4/+5
neigh_dump_table() is already relying on RCU protection. pneigh_dump_table() is using its own protection (tbl->lock) Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-04-19neighbour: fix neigh_dump_info() return valueEric Dumazet1-18/+13
Change neigh_dump_table() and pneigh_dump_table() to either return 0 or -EMSGSIZE if not enough space was available in the skb. Then neigh_dump_info() can do the same. This allows NLMSG_DONE to be appended to the current skb at the end of a dump, saving a couple of recvmsg() system calls. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-04-19neighbour: add RCU protection to neigh_tables[]Eric Dumazet1-11/+19
In order to remove RTNL protection from neightbl_dump_info() and neigh_dump_info() later, we need to add RCU protection to neigh_tables[]. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-04-19net: dsa: xrs700x: fix missing initialisation of ds->phylink_mac_opsRussell King (Oracle)1-0/+1
The kernel build bot identified the following mistake in the recently merged 860a9bed2651 ("net: dsa: xrs700x: provide own phylink MAC operations") patch: drivers/net/dsa/xrs700x/xrs700x.c:714:37: warning: 'xrs700x_phylink_mac_ops' defined but not used [-Wunused-const-variable=] 714 | static const struct phylink_mac_ops xrs700x_phylink_mac_ops = { | ^~~~~~~~~~~~~~~~~~~~~~~ Fix the omitted assignment of ds->phylink_mac_ops. Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-04-19Merge branch 'net-rps-lockless'David S. Miller1-9/+9
Jason Xing says: ==================== locklessly protect left members in struct rps_dev_flow From: Jason Xing <kernelxing@tencent.com> Since Eric did a more complicated locklessly change to last_qtail member[1] in struct rps_dev_flow, the left members are easier to change as the same. One thing important I would like to share by qooting Eric: "rflow is located in rxqueue->rps_flow_table, it is thus private to current thread. Only one cpu can service an RX queue at a time." So we only pay attention to the reader in the rps_may_expire_flow() and writer in the set_rps_cpu(). They are in the two different contexts. [1]: https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/commit/?id=3b4cf29bdab v3 Link: https://lore.kernel.org/all/20240417062721.45652-1-kerneljasonxing@gmail.com/ 1. adjust the protection in a right way (Eric) v2 1. fix passing wrong type qtail. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2024-04-19net: rps: locklessly access rflow->cpuJason Xing1-1/+1
This is the last member in struct rps_dev_flow which should be protected locklessly. So finish it. Signed-off-by: Jason Xing <kernelxing@tencent.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-04-19net: rps: protect filter locklesslyJason Xing1-4/+4
As we can see, rflow->filter can be written/read concurrently, so lockless access is needed. Signed-off-by: Jason Xing <kernelxing@tencent.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-04-19net: rps: protect last_qtail with rps_input_queue_tail_save() helperJason Xing1-4/+4
Removing one unnecessary reader protection and add another writer protection to finish the locklessly proctection job. Note: the removed READ_ONCE() is not needed because we only have to protect the locklessly reader in the different context (rps_may_expire_flow()). Signed-off-by: Jason Xing <kernelxing@tencent.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-04-19Merge branch 'net_sched-dump-no-rtnl'David S. Miller15-234/+323
Eric Dumazet says: ==================== net_sched: first series for RTNL-less qdisc dumps Medium term goal is to implement "tc qdisc show" without needing to acquire RTNL. This first series makes the requested changes in 14 qdisc. Notes : - RTNL is still held in "tc qdisc show", more changes are needed. - Qdisc returning many attributes might want/need to provide a consistent set of attributes. If that is the case, their dump() method could acquire the qdisc spinlock, to pair the spinlock acquision in their change() method. V2: Addressed Simon feedback (Thanks a lot Simon) ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2024-04-19net_sched: sch_skbprio: implement lockless skbprio_dump()Eric Dumazet1-3/+5
Instead of relying on RTNL, skbprio_dump() can use READ_ONCE() annotation, paired with WRITE_ONCE() one in skbprio_change(). Also add a READ_ONCE(sch->limit) in skbprio_enqueue(). Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Simon Horman <horms@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-04-19net_sched: sch_pie: implement lockless pie_dump()Eric Dumazet1-18/+21
Instead of relying on RTNL, pie_dump() can use READ_ONCE() annotations, paired with WRITE_ONCE() ones in pie_change(). Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Simon Horman <horms@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-04-19net_sched: sch_hhf: implement lockless hhf_dump()Eric Dumazet1-14/+21
Instead of relying on RTNL, hhf_dump() can use READ_ONCE() annotations, paired with WRITE_ONCE() ones in hhf_change(). Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Simon Horman <horms@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-04-19net_sched: sch_hfsc: implement lockless accesses to q->defclsEric Dumazet1-5/+4
Instead of relying on RTNL, hfsc_dump_qdisc() can use READ_ONCE() annotation, paired with WRITE_ONCE() one in hfsc_change_qdisc(). Use READ_ONCE(q->defcls) in hfsc_classify() to no longer acquire qdisc lock from hfsc_change_qdisc(). Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Simon Horman <horms@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-04-19net_sched: sch_fq_pie: implement lockless fq_pie_dump()Eric Dumazet1-27/+34
Instead of relying on RTNL, fq_pie_dump() can use READ_ONCE() annotations, paired with WRITE_ONCE() ones in fq_pie_change(). Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Simon Horman <horms@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-04-19net_sched: sch_fq_codel: implement lockless fq_codel_dump()Eric Dumazet1-22/+35
Instead of relying on RTNL, fq_codel_dump() can use READ_ONCE() annotations, paired with WRITE_ONCE() ones in fq_codel_change(). Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Simon Horman <horms@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-04-19net_sched: sch_fifo: implement lockless __fifo_dump()Eric Dumazet1-6/+7
Instead of relying on RTNL, __fifo_dump() can use READ_ONCE() annotations, paired with WRITE_ONCE() ones in __fifo_init(). Also add missing READ_ONCE(sh->limit) in bfifo_enqueue(), pfifo_enqueue() and pfifo_tail_enqueue(). Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Simon Horman <horms@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-04-19net_sched: sch_ets: implement lockless ets_dump()Eric Dumazet1-11/+14
Instead of relying on RTNL, ets_dump() can use READ_ONCE() annotations, paired with WRITE_ONCE() ones in ets_change(). Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Simon Horman <horms@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-04-19net_sched: sch_tfs: implement lockless etf_dump()Eric Dumazet1-5/+5
Instead of relying on RTNL, codel_dump() can use READ_ONCE() annotations. There is no etf_change() yet, this patch imply aligns this qdisc with others. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Simon Horman <horms@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-04-19net_sched: sch_codel: implement lockless codel_dump()Eric Dumazet1-11/+18
Instead of relying on RTNL, codel_dump() can use READ_ONCE() annotations, paired with WRITE_ONCE() ones in codel_change(). Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Simon Horman <horms@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-04-19net_sched: sch_choke: implement lockless choke_dump()Eric Dumazet2-16/+17
Instead of relying on RTNL, choke_dump() can use READ_ONCE() annotations, paired with WRITE_ONCE() ones in choke_change(). v2: added a WRITE_ONCE(p->Scell_log, Scell_log) per Simon feedback in V1 Removed the READ_ONCE(q->limit) in choke_enqueue() Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Simon Horman <horms@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-04-19net_sched: sch_cbs: implement lockless cbs_dump()Eric Dumazet1-10/+10
Instead of relying on RTNL, cbs_dump() can use READ_ONCE() annotations, paired with WRITE_ONCE() ones in cbs_change(). Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Simon Horman <horms@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-04-19net_sched: cake: implement lockless cake_dump()Eric Dumazet1-47/+63
Instead of relying on RTNL, cake_dump() can use READ_ONCE() annotations, paired with WRITE_ONCE() ones in cake_change(). v2: addressed Simon feedback in V1: https://lore.kernel.org/netdev/20240417083549.GA3846178@kernel.org/ Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Toke Høiland-Jørgensen <toke@toke.dk> Reviewed-by: Simon Horman <horms@kernel.org> Acked-by: Toke Høiland-Jørgensen <toke@toke.dk> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-04-19net_sched: sch_fq: implement lockless fq_dump()Eric Dumazet1-39/+69
Instead of relying on RTNL, fq_dump() can use READ_ONCE() annotations, paired with WRITE_ONCE() in fq_change() v2: Addressed Simon feedback in V1: https://lore.kernel.org/netdev/20240416181915.GT2320920@kernel.org/ Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Simon Horman <horms@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-04-19net: libwx: fix alloc msix vectors failedDuanqiang Wen1-1/+1
driver needs queue msix vectors and one misc irq vector, but only queue vectors need irq affinity. when num_online_cpus is less than chip max msix vectors, driver will acquire (num_online_cpus + 1) vecotrs, and call pci_alloc_irq_vectors_affinity functions with affinity params without setting pre_vectors or post_vectors, it will cause return error code -ENOSPC. Misc irq vector is vector 0, driver need to set affinity params .pre_vectors = 1. Fixes: 3f703186113f ("net: libwx: Add irq flow functions") Signed-off-by: Duanqiang Wen <duanqiangwen@net-swift.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-04-19ALSA: seq: ump: Fix conversion from MIDI2 to MIDI1 UMP messagesTakashi Iwai1-1/+1
The conversion from MIDI2 to MIDI1 UMP messages had a leftover artifact (superfluous bit shift), and this resulted in the bogus type check, leading to empty outputs. Let's fix it. Fixes: e9e02819a98a ("ALSA: seq: Automatic conversion of UMP events") Cc: <stable@vger.kernel.org> Link: https://github.com/alsa-project/alsa-utils/issues/262 Message-ID: <20240419100442.14806-1-tiwai@suse.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2024-04-19ALSA: hda/realtek - Enable audio jacks of Haier Boyue G42 with ALC269VCAi Chao1-0/+1
The Haier Boyue G42 with ALC269VC cannot detect the MIC of headset, the line out and internal speaker until ALC269VC_FIXUP_ACER_VCOPPERBOX_PINS quirk applied. Signed-off-by: Ai Chao <aichao@kylinos.cn> Cc: <stable@vger.kernel.org> Message-ID: <20240419082159.476879-1-aichao@kylinos.cn> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2024-04-19wifi: mac80211: handle link ID during management TxSriram R1-1/+11
During non-STA management Tx, when source address is same as one of the link addresses and even when userspace requested Tx on a specific link, the link ID is not set in the TX control information. Now if the MLD address is also the same as that of the link address, then mac80211 fills link as "unspecified", since it looks like MLD TX. This is unexpected, however, since non-STA TX must specify which link to use. In hwsim, this will (after warnings) result in dropping such frames as well. Use and set the link id if the link bss is matching the address and requested channel. Signed-off-by: Sriram R <quic_srirrama@quicinc.com> Signed-off-by: Aditya Kumar Singh <quic_adisi@quicinc.com> Link: https://msgid.link/20240410052705.169865-1-quic_adisi@quicinc.com Link: https://lore.kernel.org/r/0496fb7e-53cc-476f-8052-985d82fd8d01@quicinc.com [reword commit message, should spell out hwsim etc.] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-04-19wifi: mac80211: handle sdata->u.ap.active flag with MLOAditya Kumar Singh1-3/+7
Currently whenever link AP beacon is assigned, sdata->u.ap.active flag is set and whenever it is brought down, the flag is reset. However, with MLO, all the links of the same MLD would use the same sdata. Hence there is no need to set/reset for each link up/down. Also, resetting it when only one of the links went down is not desirable. Add changes to set the active flag only when first link is assigned beacon. Similarly, add changes to reset that flag only when last link is brought down. Signed-off-by: Aditya Kumar Singh <quic_adisi@quicinc.com> Link: https://msgid.link/20240409094017.3165560-1-quic_adisi@quicinc.com [remove unnecessary check before constant true assignment] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-04-19wifi: cfg80211: add return docs for regulatory functionsJohannes Berg1-1/+4
Add return value documentation for regulatory functions that are missing it. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-04-19wifi: cfg80211: make some regulatory functions voidJohannes Berg3-16/+13
The return value of regulatory_hint_indoor() is always 0 for success, and the return value of regulatory_hint_found_beacon() is always ignored. Make them both have void return. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-04-19wifi: mac80211: add return docs for sta_info_flush()Johannes Berg1-2/+2
Use the Return: annotation instead of spelling out "Returns" in the documentation, for both sta_info_flush()/__sta_info_flush(). Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-04-19wifi: mac80211: keep mac80211 consistent on link activation failureBenjamin Berg3-16/+52
In the unlikely event that link_use_channel fails while activating a link, mac80211 would go into a bad state. Unfortunately, we cannot completely avoid failures from drivers in this case. However, what we can do is to just continue internally anyway and assume the driver is going to trigger a recovery flow from its side. Doing that means that we at least have a consistent state in mac80211 allowing such a recovery flow to succeed. Reviewed-by: Miriam Rachel Korenblit <miriam.rachel.korenblit@intel.com> Signed-off-by: Benjamin Berg <benjamin.berg@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Link: https://msgid.link/20240418115219.1129e89f4b55.I6299678353e50e88b55c99b0bce15c64b52c2804@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-04-19wifi: mac80211: simplify ieee80211_assign_link_chanctx()Johannes Berg1-8/+9
There's no need for a label/goto here, the only thing is that drv_assign_vif_chanctx() must succeed to set 'conf' and add the new context to the list, the remaining code is (and must be) the same regardless. Reviewed-by: Miriam Rachel Korenblit <miriam.rachel.korenblit@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Link: https://msgid.link/20240418115219.a94852030d33.I9d647178ab25636372ed79e5312c68a06e0bf60c@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-04-19wifi: mac80211: reserve chanctx during findJohannes Berg1-2/+29
When searching for a chanctx for re-use, it's later adjusted and assigned. It may also be that another one is already assigned to the link in question, so unassign can also happen. In short, the driver is called multiple times. During these callbacks, it may thus change active links (on another interface), which then can in turn cause the found chanctx (that's going to be reused) to get removed and freed. To avoid this, temporarily assign it to the reserved chanctx and track the link that wants to use it in the reserved_links list. This causes the ieee80211_chanctx_refcount() to be increased by one during these operations, thus avoiding the free. Reviewed-by: Miriam Rachel Korenblit <miriam.rachel.korenblit@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Link: https://msgid.link/20240418115219.94ea84c8ee1e.I0b247dbc0cd937ae6367bc0fc7e8d156b5d5f9b1@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-04-19wifi: cfg80211: fix cfg80211 function kernel-docJeff Johnson1-29/+82
Running "scripts/kernel-doc -Wall -Werror -none include/net/cfg80211.h" produces many warnings of the form "warning: No description found for return value of <function>", so make sure all of them have a Return: clause. In some instances also add a Context: clause. Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Link: https://msgid.link/20240417-cfg80211-kdoc-v1-1-d54cb7143417@quicinc.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-04-19wifi: mac80211_hwsim: Use wider regulatory for custom for 6GHz testsChaitanya Tata1-2/+2
If a custom regulatory is being used, use the 6GHz regulatory for testing 6GHz channels. Signed-off-by: Chaitanya Tata <Chaitanya.Tk17@gmail.com> Link: https://msgid.link/20240417074022.423432-1-Chaitanya.Tk17@gmail.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-04-19wifi: iwlwifi: mvm: Don't allow EMLSR when the RSSI is lowMiri Korenblit5-29/+233
If the RSSI of a link is low enough, don't use it for EMLSR. If EMLSR is already active and the RSSI of one of the links gets low, exit EMLSR by deactivating that link. Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com> Link: https://msgid.link/20240416134215.73263c000263.Ieb2b18855a2719b5e18ad2fa8a3e855ca4e23938@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-04-19wifi: iwlwifi: mvm: disable EMLSR when we suspend with wowlanYedidya Benshimol3-11/+14
We can't be an EMLSR while suspended with wowlan. De-activate the secondary link upon wowlan entring. Set the blocking reason upon suspension and clear it upon resume. Signed-off-by: Yedidya Benshimol <yedidya.ben.shimol@intel.com> Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com> Link: https://msgid.link/20240416134215.6ea884b3f095.I84233cb1c79ba538defafb8ddb983c47f04a400a@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-04-19wifi: iwlwifi: mvm: get periodic statistics in EMLSRMiri Korenblit4-1/+33
In EMLSR we need to track the RSSI of both links, and exit if the RSSI of one of the links got too low. For that request the FW to send statistics every 5 seconds when in EMLSR. Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com> Link: https://msgid.link/20240416134215.6e19d596d77f.Ica2a75a031b1bced0dc2e18c5d365b5eb0d3ec07@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-04-19wifi: iwlwifi: mvm: don't recompute EMLSR mode in can_activate_linksMiri Korenblit3-34/+7
mac80211 invokes the driver callback drv_can_activate_links() from ieee80211_set_active_links to verify it can activate the desired link combination. However, ieee80211_set_active_links is called with more than one link in 2 cases: - After driver's link selection decided to enter EMLSR - From debugfs, for testing purposes. For both cases there is no need to recompute all the considerations determining whether to activate EMLSR. Instead, only check if the vif is not blocked for EMLSR. Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com> Reviewed-by: Johannes Berg <johannes.berg@intel.com> Link: https://msgid.link/20240416134215.202cf5a9ef2c.I65e4698b730a8652ad8d1c01420aabb41a1d04fd@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-04-19wifi: iwlwifi: mvm: implement EMLSR prevention mechanism.Miri Korenblit3-0/+100
Address scenarios where repeated entry and exit from EMLSR occur, such as encountering missed beacons on a specific link, while still discovering that link during a scan. To mitigate this, introduce the EMLSR prevention mechanism, which operates as follows: - On each exit from EMLSR event, record the timestamp and the exit reason. - If two consecutive exits happen for the same reason within a 400-second window, enforce a 300-second EMLSR prevention. - If a third exit for the same reason occurs within 400 seconds from the second exit, enforce an extended EMLSR prevention of 600 seconds. Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com> Reviewed-by: Johannes Berg <johannes.berg@intel.com> Link: https://msgid.link/20240416134215.d820ee98b300.I6406db40cf25eabdba602afd783466473b909216@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-04-19wifi: iwlwifi: mvm: exit EMLSR upon missed beaconMiri Korenblit5-14/+40
In case of more than 6 missed beacons on one of the links, exit EMLSR by deactivating that link. Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com> Link: https://msgid.link/20240416134215.f9111c79cb53.Ie95ea60149a9bc4367f6b338b37c8635051351ba@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-04-19wifi: iwlwifi: mvm: init vif works only onceJohannes Berg3-2/+21
It's dangerous to re-initialize works repeatedly, especially delayed ones that have an associated timer, and even more so if they're not necessarily canceled inbetween. This can be the case for these workers here during FW restart scenarios, so make sure to initialize it only once. While at it, also ensure it is cancelled correctly. Fixes: f67806140220 ("iwlwifi: mvm: disconnect in case of bad channel switch parameters") Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com> Link: https://msgid.link/20240416134215.ddf8eece5eac.I4164f5c9c444b64a9abbaab14c23858713778e35@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-04-19wifi: iwlwifi: mvm: Add helper functions to update EMLSR statusMiri Korenblit4-55/+98
There are reasons for which we need to exit EMLSR, but not to block it completely, and there are reasons for which we need to block EMLSR. For both reason types we have the enum iwl_mvm_esr_state, when the blocking reasons are stored in the `mvmvif::esr_disable_reason` bitmap. This change introduces the APIs to use in the different cases: - iwl_mvm_exit_esr - will exit from EMLSR mode. - iwl_mvm_block_esr - will update the bitmap and exit EMLSR, to be used for the blocking reasons only. - iwl_mvm_unblock_esr - will update the bitmap. To be used for the blocking reasons only. Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com> Reviewed-by: Johannes Berg <johannes.berg@intel.com> Link: https://msgid.link/20240416134215.d54142a75876.I552926065521f5f848c37b0bd845494bd7865fb7@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-04-19wifi: iwlwifi: mvm: Implement new link selection algorithmMiri Korenblit9-187/+298
Replaces the current logic with a new algorithm based on the link grading introduced in a previous patch. The new selection algorithm will be invoked upon successful scan to ensure it has the necessary updated data it needs. This update delegates the selection logic as the primary link determiner in EMLSR mode, storing it in mvmvif to avoid repeated calculations, as the result may vary. Additionally, includes tests for iwl_mvm_valid_link_pair to validate link pairs for EMLSR. Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com> Reviewed-by: Johannes Berg <johannes.berg@intel.com> Link: https://msgid.link/20240416134215.309fb1b3fe44.I5baf0c293c89a5a28bd1a6386bf9ca6d2bf61ab8@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-04-19wifi: iwlwifi: mvm: move EMLSR/links codeMiri Korenblit3-222/+228
The functions that are link related, so they should be in link.c and not in mld-mac80211.c. Move them. Also move the different prototypes to the right place in mvm.h Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com> Reviewed-by: Johannes Berg <johannes.berg@intel.com> Link: https://msgid.link/20240416134215.e7c368256fa0.I6b15805a7c8a75d1814f1a829601daf4d3788731@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-04-19wifi: iwlwifi: mvm: check if EMLSR is allowed before selecting linksMiri Korenblit2-19/+29
Currenty iwl_mvm_mld_select_links() doesn't fully check that EMLSR is allowed before selecting the 2 best links. Although it will fail in ieee80211_set_active_links(), it is preferred to avoid the redundent calculations. Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com> Reviewed-by: Johannes Berg <johannes.berg@intel.com> Link: https://msgid.link/20240416134215.3578a93feb1a.I1cd91608bb73fbe19b8dfdf90e14ce40b98c3430@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>