summaryrefslogtreecommitdiffstats
path: root/net/mac80211
Commit message (Collapse)AuthorAgeFilesLines
* wifi: mac80211: recalc chanctx mindef before assigningJohannes Berg2023-05-161-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | When we allocate a new channel context, or find an existing one that is compatible, we currently assign it to a link before its mindef is updated. This leads to strange situations, especially in link switching where you switch to an 80 MHz link and expect it to be active immediately, but the mindef is still configured to 20 MHz while assigning. Also, it's strange that the chandef passed to the assign method's argument is wider than the one in the context. Fix this by calculating the mindef with the new link considered before calling the driver. In particular, this fixes an iwlwifi problem during link switch where the firmware would assert because the (link) station that was added for the AP is configured to transmit at a bandwidth that's wider than the channel context that it's configured on. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Gregory Greenman <gregory.greenman@intel.com> Link: https://lore.kernel.org/r/20230504134511.828474-5-gregory.greenman@intel.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* wifi: mac80211: consider reserved chanctx for mindefJohannes Berg2023-05-163-30/+47
| | | | | | | | | | | | | | | | | | | When a chanctx is reserved for a new vif and we recalculate the minimal definition for it, we need to consider the new interface it's being reserved for before we assign it, so it can be used directly with the correct min channel width. Fix the code to - optionally - consider that, and use that option just before doing the reassignment. Also, when considering channel context reservations, we should only consider the one link we're currently working with. Change the boolean argument to a link pointer to do that. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Gregory Greenman <gregory.greenman@intel.com> Link: https://lore.kernel.org/r/20230504134511.828474-4-gregory.greenman@intel.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* wifi: mac80211: simplify chanctx allocationJohannes Berg2023-05-161-1/+1
| | | | | | | | | | | There's no need to call ieee80211_recalc_chanctx_min_def() since it cannot and won't call the driver anyway; just use _ieee80211_recalc_chanctx_min_def() instead. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Gregory Greenman <gregory.greenman@intel.com> Link: https://lore.kernel.org/r/20230504134511.828474-3-gregory.greenman@intel.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* wifi: mac80211: Abort running color change when stopping the APMichael Lee2023-05-161-1/+2
| | | | | | | | | | | When stopping the AP, there might be a color change in progress. It should be deactivated here, or the driver might later finalize a color change on a stopped AP. Fixes: 5f9404abdf2a (mac80211: add support for BSS color change) Signed-off-by: Michael Lee <michael-cy.lee@mediatek.com> Link: https://lore.kernel.org/r/20230504080441.22958-1-michael-cy.lee@mediatek.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* wifi: mac80211: fix min center freq offset tracingJohannes Berg2023-05-161-1/+1
| | | | | | | | | | | | We need to set the correct trace variable, otherwise we're overwriting something else instead and the right one that we print later is not initialized. Fixes: b6011960f392 ("mac80211: handle channel frequency offset") Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Gregory Greenman <gregory.greenman@intel.com> Link: https://lore.kernel.org/r/20230504134511.828474-2-gregory.greenman@intel.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* wifi: mac80211: Fix puncturing bitmap handling in __ieee80211_csa_finalize()Christophe JAILLET2023-05-161-2/+2
| | | | | | | | | | | | | | | 'changed' can be OR'ed with BSS_CHANGED_EHT_PUNCTURING which is larger than an u32. So, turn 'changed' into an u64 and update ieee80211_set_after_csa_beacon() accordingly. In the commit in Fixes, only ieee80211_start_ap() was updated. Fixes: 2cc25e4b2a04 ("wifi: mac80211: configure puncturing bitmap") Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Reviewed-by: Simon Horman <simon.horman@corigine.com> Link: https://lore.kernel.org/r/e84a3f80fe536787f7a2c7180507efc36cd14f95.1682358088.git.christophe.jaillet@wanadoo.fr Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* wifi: mac80211: fortify the spinlock against deadlock by interruptMirsad Goran Todorovac2023-05-161-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the function ieee80211_tx_dequeue() there is a particular locking sequence: begin: spin_lock(&local->queue_stop_reason_lock); q_stopped = local->queue_stop_reasons[q]; spin_unlock(&local->queue_stop_reason_lock); However small the chance (increased by ftracetest), an asynchronous interrupt can occur in between of spin_lock() and spin_unlock(), and the interrupt routine will attempt to lock the same &local->queue_stop_reason_lock again. This will cause a costly reset of the CPU and the wifi device or an altogether hang in the single CPU and single core scenario. The only remaining spin_lock(&local->queue_stop_reason_lock) that did not disable interrupts was patched, which should prevent any deadlocks on the same CPU/core and the same wifi device. This is the probable trace of the deadlock: kernel: ================================ kernel: WARNING: inconsistent lock state kernel: 6.3.0-rc6-mt-20230401-00001-gf86822a1170f #4 Tainted: G W kernel: -------------------------------- kernel: inconsistent {IN-SOFTIRQ-W} -> {SOFTIRQ-ON-W} usage. kernel: kworker/5:0/25656 [HC0[0]:SC0[0]:HE1:SE1] takes: kernel: ffff9d6190779478 (&local->queue_stop_reason_lock){+.?.}-{2:2}, at: return_to_handler+0x0/0x40 kernel: {IN-SOFTIRQ-W} state was registered at: kernel: lock_acquire+0xc7/0x2d0 kernel: _raw_spin_lock+0x36/0x50 kernel: ieee80211_tx_dequeue+0xb4/0x1330 [mac80211] kernel: iwl_mvm_mac_itxq_xmit+0xae/0x210 [iwlmvm] kernel: iwl_mvm_mac_wake_tx_queue+0x2d/0xd0 [iwlmvm] kernel: ieee80211_queue_skb+0x450/0x730 [mac80211] kernel: __ieee80211_xmit_fast.constprop.66+0x834/0xa50 [mac80211] kernel: __ieee80211_subif_start_xmit+0x217/0x530 [mac80211] kernel: ieee80211_subif_start_xmit+0x60/0x580 [mac80211] kernel: dev_hard_start_xmit+0xb5/0x260 kernel: __dev_queue_xmit+0xdbe/0x1200 kernel: neigh_resolve_output+0x166/0x260 kernel: ip_finish_output2+0x216/0xb80 kernel: __ip_finish_output+0x2a4/0x4d0 kernel: ip_finish_output+0x2d/0xd0 kernel: ip_output+0x82/0x2b0 kernel: ip_local_out+0xec/0x110 kernel: igmpv3_sendpack+0x5c/0x90 kernel: igmp_ifc_timer_expire+0x26e/0x4e0 kernel: call_timer_fn+0xa5/0x230 kernel: run_timer_softirq+0x27f/0x550 kernel: __do_softirq+0xb4/0x3a4 kernel: irq_exit_rcu+0x9b/0xc0 kernel: sysvec_apic_timer_interrupt+0x80/0xa0 kernel: asm_sysvec_apic_timer_interrupt+0x1f/0x30 kernel: _raw_spin_unlock_irqrestore+0x3f/0x70 kernel: free_to_partial_list+0x3d6/0x590 kernel: __slab_free+0x1b7/0x310 kernel: kmem_cache_free+0x52d/0x550 kernel: putname+0x5d/0x70 kernel: do_sys_openat2+0x1d7/0x310 kernel: do_sys_open+0x51/0x80 kernel: __x64_sys_openat+0x24/0x30 kernel: do_syscall_64+0x5c/0x90 kernel: entry_SYSCALL_64_after_hwframe+0x72/0xdc kernel: irq event stamp: 5120729 kernel: hardirqs last enabled at (5120729): [<ffffffff9d149936>] trace_graph_return+0xd6/0x120 kernel: hardirqs last disabled at (5120728): [<ffffffff9d149950>] trace_graph_return+0xf0/0x120 kernel: softirqs last enabled at (5069900): [<ffffffff9cf65b60>] return_to_handler+0x0/0x40 kernel: softirqs last disabled at (5067555): [<ffffffff9cf65b60>] return_to_handler+0x0/0x40 kernel: other info that might help us debug this: kernel: Possible unsafe locking scenario: kernel: CPU0 kernel: ---- kernel: lock(&local->queue_stop_reason_lock); kernel: <Interrupt> kernel: lock(&local->queue_stop_reason_lock); kernel: *** DEADLOCK *** kernel: 8 locks held by kworker/5:0/25656: kernel: #0: ffff9d618009d138 ((wq_completion)events_freezable){+.+.}-{0:0}, at: process_one_work+0x1ca/0x530 kernel: #1: ffffb1ef4637fe68 ((work_completion)(&local->restart_work)){+.+.}-{0:0}, at: process_one_work+0x1ce/0x530 kernel: #2: ffffffff9f166548 (rtnl_mutex){+.+.}-{3:3}, at: return_to_handler+0x0/0x40 kernel: #3: ffff9d6190778728 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: return_to_handler+0x0/0x40 kernel: #4: ffff9d619077b480 (&mvm->mutex){+.+.}-{3:3}, at: return_to_handler+0x0/0x40 kernel: #5: ffff9d61907bacd8 (&trans_pcie->mutex){+.+.}-{3:3}, at: return_to_handler+0x0/0x40 kernel: #6: ffffffff9ef9cda0 (rcu_read_lock){....}-{1:2}, at: iwl_mvm_queue_state_change+0x59/0x3a0 [iwlmvm] kernel: #7: ffffffff9ef9cda0 (rcu_read_lock){....}-{1:2}, at: iwl_mvm_mac_itxq_xmit+0x42/0x210 [iwlmvm] kernel: stack backtrace: kernel: CPU: 5 PID: 25656 Comm: kworker/5:0 Tainted: G W 6.3.0-rc6-mt-20230401-00001-gf86822a1170f #4 kernel: Hardware name: LENOVO 82H8/LNVNB161216, BIOS GGCN51WW 11/16/2022 kernel: Workqueue: events_freezable ieee80211_restart_work [mac80211] kernel: Call Trace: kernel: <TASK> kernel: ? ftrace_regs_caller_end+0x66/0x66 kernel: dump_stack_lvl+0x5f/0xa0 kernel: dump_stack+0x14/0x20 kernel: print_usage_bug.part.46+0x208/0x2a0 kernel: mark_lock.part.47+0x605/0x630 kernel: ? sched_clock+0xd/0x20 kernel: ? trace_clock_local+0x14/0x30 kernel: ? __rb_reserve_next+0x5f/0x490 kernel: ? _raw_spin_lock+0x1b/0x50 kernel: __lock_acquire+0x464/0x1990 kernel: ? mark_held_locks+0x4e/0x80 kernel: lock_acquire+0xc7/0x2d0 kernel: ? ftrace_regs_caller_end+0x66/0x66 kernel: ? ftrace_return_to_handler+0x8b/0x100 kernel: ? preempt_count_add+0x4/0x70 kernel: _raw_spin_lock+0x36/0x50 kernel: ? ftrace_regs_caller_end+0x66/0x66 kernel: ? ftrace_regs_caller_end+0x66/0x66 kernel: ieee80211_tx_dequeue+0xb4/0x1330 [mac80211] kernel: ? prepare_ftrace_return+0xc5/0x190 kernel: ? ftrace_graph_func+0x16/0x20 kernel: ? 0xffffffffc02ab0b1 kernel: ? lock_acquire+0xc7/0x2d0 kernel: ? iwl_mvm_mac_itxq_xmit+0x42/0x210 [iwlmvm] kernel: ? ieee80211_tx_dequeue+0x9/0x1330 [mac80211] kernel: ? __rcu_read_lock+0x4/0x40 kernel: ? ftrace_regs_caller_end+0x66/0x66 kernel: iwl_mvm_mac_itxq_xmit+0xae/0x210 [iwlmvm] kernel: ? ftrace_regs_caller_end+0x66/0x66 kernel: iwl_mvm_queue_state_change+0x311/0x3a0 [iwlmvm] kernel: ? ftrace_regs_caller_end+0x66/0x66 kernel: iwl_mvm_wake_sw_queue+0x17/0x20 [iwlmvm] kernel: ? ftrace_regs_caller_end+0x66/0x66 kernel: iwl_txq_gen2_unmap+0x1c9/0x1f0 [iwlwifi] kernel: ? ftrace_regs_caller_end+0x66/0x66 kernel: iwl_txq_gen2_free+0x55/0x130 [iwlwifi] kernel: ? ftrace_regs_caller_end+0x66/0x66 kernel: iwl_txq_gen2_tx_free+0x63/0x80 [iwlwifi] kernel: ? ftrace_regs_caller_end+0x66/0x66 kernel: _iwl_trans_pcie_gen2_stop_device+0x3f3/0x5b0 [iwlwifi] kernel: ? _iwl_trans_pcie_gen2_stop_device+0x9/0x5b0 [iwlwifi] kernel: ? mutex_lock_nested+0x4/0x30 kernel: ? ftrace_regs_caller_end+0x66/0x66 kernel: iwl_trans_pcie_gen2_stop_device+0x5f/0x90 [iwlwifi] kernel: ? ftrace_regs_caller_end+0x66/0x66 kernel: iwl_mvm_stop_device+0x78/0xd0 [iwlmvm] kernel: ? ftrace_regs_caller_end+0x66/0x66 kernel: __iwl_mvm_mac_start+0x114/0x210 [iwlmvm] kernel: ? ftrace_regs_caller_end+0x66/0x66 kernel: iwl_mvm_mac_start+0x76/0x150 [iwlmvm] kernel: ? ftrace_regs_caller_end+0x66/0x66 kernel: drv_start+0x79/0x180 [mac80211] kernel: ? ftrace_regs_caller_end+0x66/0x66 kernel: ieee80211_reconfig+0x1523/0x1ce0 [mac80211] kernel: ? synchronize_net+0x4/0x50 kernel: ? ftrace_regs_caller_end+0x66/0x66 kernel: ieee80211_restart_work+0x108/0x170 [mac80211] kernel: ? ftrace_regs_caller_end+0x66/0x66 kernel: process_one_work+0x250/0x530 kernel: ? ftrace_regs_caller_end+0x66/0x66 kernel: worker_thread+0x48/0x3a0 kernel: ? __pfx_worker_thread+0x10/0x10 kernel: kthread+0x10f/0x140 kernel: ? __pfx_kthread+0x10/0x10 kernel: ret_from_fork+0x29/0x50 kernel: </TASK> Fixes: 4444bc2116ae ("wifi: mac80211: Proper mark iTXQs for resumption") Link: https://lore.kernel.org/all/1f58a0d1-d2b9-d851-73c3-93fcc607501c@alu.unizg.hr/ Reported-by: Mirsad Goran Todorovac <mirsad.todorovac@alu.unizg.hr> Cc: Gregory Greenman <gregory.greenman@intel.com> Cc: Johannes Berg <johannes.berg@intel.com> Link: https://lore.kernel.org/all/cdc80531-f25f-6f9d-b15f-25e16130b53a@alu.unizg.hr/ Cc: David S. Miller <davem@davemloft.net> Cc: Eric Dumazet <edumazet@google.com> Cc: Jakub Kicinski <kuba@kernel.org> Cc: Paolo Abeni <pabeni@redhat.com> Cc: Leon Romanovsky <leon@kernel.org> Cc: Alexander Wetzel <alexander@wetzel-home.de> Signed-off-by: Mirsad Goran Todorovac <mirsad.todorovac@alu.unizg.hr> Reviewed-by: Leon Romanovsky <leonro@nvidia.com> Reviewed-by: tag, or it goes automatically? Link: https://lore.kernel.org/r/20230425164005.25272-1-mirsad.todorovac@alu.unizg.hr Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* Merge tag 'wireless-next-2023-04-21' of ↵Jakub Kicinski2023-04-217-30/+40
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next Kalle Valo says: ==================== wireless-next patches for v6.4 Most likely the last -next pull request for v6.4. We have changes all over. rtw88 now supports SDIO bus and iwlwifi continues to work on Wi-Fi 7 support. Not much stack changes this time. Major changes: cfg80211/mac80211 - fix some Fine Time Measurement (FTM) frames not being bufferable - flush frames before key removal to avoid potential unencrypted transmission depending on the hardware design iwlwifi - preparation for Wi-Fi 7 EHT and multi-link support rtw88 - SDIO bus support - RTL8822BS, RTL8822CS and RTL8821CS SDIO chipset support rtw89 - framework firmware backwards compatibility brcmfmac - Cypress 43439 SDIO support mt76 - mt7921 P2P support - mt7996 mesh A-MSDU support - mt7996 EHT support - mt7996 coredump support wcn36xx - support for pronto v3 hardware ath11k - PCIe DeviceTree bindings - WCN6750: enable SAR support ath10k - convert DeviceTree bindings to YAML * tag 'wireless-next-2023-04-21' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next: (261 commits) wifi: rtw88: Update spelling in main.h wifi: airo: remove ISA_DMA_API dependency wifi: rtl8xxxu: Simplify setting the initial gain wifi: rtl8xxxu: Add rtl8xxxu_write{8,16,32}_{set,clear} wifi: rtl8xxxu: Don't print the vendor/product/serial wifi: rtw88: Fix memory leak in rtw88_usb wifi: rtw88: call rtw8821c_switch_rf_set() according to chip variant wifi: rtw88: set pkg_type correctly for specific rtw8821c variants wifi: rtw88: rtw8821c: Fix rfe_option field width wifi: rtw88: usb: fix priority queue to endpoint mapping wifi: rtw88: 8822c: add iface combination wifi: rtw88: handle station mode concurrent scan with AP mode wifi: rtw88: prevent scan abort with other VIFs wifi: rtw88: refine reserved page flow for AP mode wifi: rtw88: disallow PS during AP mode wifi: rtw88: 8822c: extend reserved page number wifi: rtw88: add port switch for AP mode wifi: rtw88: add bitmap for dynamic port settings wifi: rtw89: mac: use regular int as return type of DLE buffer request wifi: mac80211: remove return value check of debugfs_create_dir() ... ==================== Link: https://lore.kernel.org/r/20230421104726.800BCC433D2@smtp.kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| * wifi: mac80211: remove return value check of debugfs_create_dir()Yingsha Xu2023-04-201-4/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Smatch complains that: debugfs_hw_add() warn: 'statsd' is an error pointer or valid Debugfs checks are generally not supposed to be checked for errors and it is not necessary here. Just delete the dead code. Signed-off-by: Yingsha Xu <ysxu@hust.edu.cn> Reviewed-by: Dongliang Mu <dzm91@hust.edu.cn> Link: https://lore.kernel.org/r/20230419104548.30124-1-ysxu@hust.edu.cn Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| * wifi: mac80211: remove ieee80211_tx_status_8023Felix Fietkau2023-04-181-24/+0
| | | | | | | | | | | | | | | | | | | | It is unused and should not be used. In order to avoid limitations in 4-address mode, the driver should always use ieee80211_tx_status_ext for 802.3 frames with a valid sta pointer. Signed-off-by: Felix Fietkau <nbd@nbd.name> Link: https://lore.kernel.org/r/20230417133751.79160-1-nbd@nbd.name Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| * wifi: mac80211: add flush_sta methodJohannes Berg2023-04-133-2/+28
| | | | | | | | | | | | | | | | Some drivers like iwlwifi might have per-STA queues, so we may want to flush/drop just those queues rather than all when removing a station. Add a separate method for that. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| * wifi: mac80211: flush queues on STA removalJohannes Berg2023-04-131-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | When we remove a station, we first make it unreachable, then we (must) remove its keys, and then remove the station itself. Depending on the hardware design, if we have hardware crypto at all, frames still sitting on hardware queues may then be transmitted without a valid key, possibly unencrypted or with a fixed key. Fix this by flushing the queues when removing stations so this cannot happen. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| * wifi: ieee80211: correctly mark FTM frames non-bufferableJohannes Berg2023-04-131-2/+2
| | | | | | | | | | | | | | | | | | | | | | The checks of whether or not a frame is bufferable were not taking into account that some action frames aren't, such as FTM. Check this, which requires some changes to the function ieee80211_is_bufferable_mmpdu() since we need the whole skb for the checks now. Reviewed-by: Ilan Peer <ilan.peer@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| * wifi: mac80211: set EHT support flag in AP modeAloka Dixit2023-04-111-0/+4
| | | | | | | | | | | | | | | | Set 'eht_support' flag if EHT capabilities are present. Signed-off-by: Aloka Dixit <quic_alokad@quicinc.com> Link: https://lore.kernel.org/r/20230410200332.32265-1-quic_alokad@quicinc.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* | mac80211: use the new drop reasons infrastructureJohannes Berg2023-04-205-48/+126
|/ | | | | | | | | | | | | | | | | It can be really hard to analyse or debug why packets are going missing in mac80211, so add the needed infrastructure to use use the new per-subsystem drop reasons. We actually use two drop reason subsystems here because of the different handling of frames that are dropped but still go to monitor for old versions of hostapd, and those that are just completely unusable (e.g. crypto failed.) Annotate a few reasons here just to illustrate this, we'll need to go through and annotate more of them later. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* wifi: mac80211: enable EHT mesh supportRyder Lee2023-03-315-4/+162
| | | | | | | | | | | | Similar to AP beacon, this enables the basic mesh EHT mode, including EHT operation IE and the fixed field of EHT operation information IE. As for the optional part (i.e. preamble puncturing bitmap) will be added in future patch. Tested-by: Lian Chen <lian.chen@mediatek.com> Signed-off-by: Ryder Lee <ryder.lee@mediatek.com> Link: https://lore.kernel.org/r/1e0ddb9001312451c3e99c4eed2072caf8075f61.1679935259.git.ryder.lee@mediatek.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* Merge wireless/main into wireless-next/mainJohannes Berg2023-03-317-38/+53
|\ | | | | | | | | | | | | There are a few merge conflicts due to overlapping fixes and changes, merge wireless/main to fix them. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| * wifi: mac80211: fix invalid drv_sta_pre_rcu_remove calls for non-uploaded staFelix Fietkau2023-03-301-1/+2
| | | | | | | | | | | | | | | | | | | | | | Avoid potential data corruption issues caused by uninitialized driver private data structures. Reported-by: Brian Coverstone <brian@mainsequence.net> Fixes: 6a9d1b91f34d ("mac80211: add pre-RCU-sync sta removal driver operation") Signed-off-by: Felix Fietkau <nbd@nbd.name> Link: https://lore.kernel.org/r/20230324120924.38412-3-nbd@nbd.name Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| * wifi: mac80211: fix flow dissection for forwarded packetsFelix Fietkau2023-03-301-1/+1
| | | | | | | | | | | | | | | | | | Adjust the network header to point at the correct payload offset Fixes: 986e43b19ae9 ("wifi: mac80211: fix receiving A-MSDU frames on mesh interfaces") Signed-off-by: Felix Fietkau <nbd@nbd.name> Link: https://lore.kernel.org/r/20230324120924.38412-2-nbd@nbd.name Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| * wifi: mac80211: fix mesh forwardingFelix Fietkau2023-03-301-0/+3
| | | | | | | | | | | | | | | | | | Linearize packets (needed for forwarding A-MSDU subframes). Fixes: 986e43b19ae9 ("wifi: mac80211: fix receiving A-MSDU frames on mesh interfaces") Signed-off-by: Felix Fietkau <nbd@nbd.name> Link: https://lore.kernel.org/r/20230324120924.38412-1-nbd@nbd.name Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| * wifi: mac80211: fix receiving mesh packets in forwarding=0 networksFelix Fietkau2023-03-301-8/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | When forwarding is set to 0, frames are typically sent with ttl=1. Move the ttl decrement check below the check for local receive in order to fix packet drops. Reported-by: Thomas Hühn <thomas.huehn@hs-nordhausen.de> Reported-by: Nick Hainke <vincent@systemli.org> Fixes: 986e43b19ae9 ("wifi: mac80211: fix receiving A-MSDU frames on mesh interfaces") Signed-off-by: Felix Fietkau <nbd@nbd.name> Link: https://lore.kernel.org/r/20230326151709.17743-1-nbd@nbd.name Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| * wifi: mac80211: fix the size calculation of ieee80211_ie_len_eht_cap()Ryder Lee2023-03-301-1/+1
| | | | | | | | | | | | | | | | | | Here should return the size of ieee80211_eht_cap_elem_fixed, so fix it. Fixes: 820acc810fb6 ("mac80211: Add EHT capabilities to association/probe request") Signed-off-by: Ryder Lee <ryder.lee@mediatek.com> Link: https://lore.kernel.org/r/06c13635fc03bcff58a647b8e03e9f01a74294bd.1679935259.git.ryder.lee@mediatek.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| * wifi: mac80211: fix potential null pointer dereferenceFelix Fietkau2023-03-301-2/+2
| | | | | | | | | | | | | | | | | | | | | | rx->sta->amsdu_mesh_control is being passed to ieee80211_amsdu_to_8023s without checking rx->sta. Since it doesn't make sense to accept A-MSDU packets without a sta, simply add a check earlier. Fixes: 6e4c0d0460bd ("wifi: mac80211: add a workaround for receiving non-standard mesh A-MSDU") Signed-off-by: Felix Fietkau <nbd@nbd.name> Link: https://lore.kernel.org/r/20230330090001.60750-2-nbd@nbd.name Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| * wifi: mac80211: drop bogus static keywords in A-MSDU rxFelix Fietkau2023-03-301-2/+2
| | | | | | | | | | | | | | | | | | | | These were unintentional copy&paste mistakes. Cc: stable@vger.kernel.org Fixes: 986e43b19ae9 ("wifi: mac80211: fix receiving A-MSDU frames on mesh interfaces") Signed-off-by: Felix Fietkau <nbd@nbd.name> Link: https://lore.kernel.org/r/20230330090001.60750-1-nbd@nbd.name Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| * wifi: mac80211: fix mesh path discovery based on unicast packetsFelix Fietkau2023-03-221-11/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | If a packet has reached its intended destination, it was bumped to the code that accepts it, without first checking if a mesh_path needs to be created based on the discovered source. Fix this by moving the destination address check further down. Cc: stable@vger.kernel.org Fixes: 986e43b19ae9 ("wifi: mac80211: fix receiving A-MSDU frames on mesh interfaces") Signed-off-by: Felix Fietkau <nbd@nbd.name> Link: https://lore.kernel.org/r/20230314095956.62085-3-nbd@nbd.name Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| * wifi: mac80211: fix qos on mesh interfacesFelix Fietkau2023-03-221-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | When ieee80211_select_queue is called for mesh, the sta pointer is usually NULL, since the nexthop is looked up much later in the tx path. Explicitly check for unicast address in that case in order to make qos work again. Cc: stable@vger.kernel.org Fixes: 50e2ab392919 ("wifi: mac80211: fix queue selection for mesh/OCB interfaces") Signed-off-by: Felix Fietkau <nbd@nbd.name> Link: https://lore.kernel.org/r/20230314095956.62085-1-nbd@nbd.name Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| * wifi: mac80211: Serialize ieee80211_handle_wake_tx_queue()Alexander Wetzel2023-03-153-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ieee80211_handle_wake_tx_queue must not run concurrent multiple times. It calls ieee80211_txq_schedule_start() and the drivers migrated to iTXQ do not expect overlapping drv_tx() calls. This fixes 'c850e31f79f0 ("wifi: mac80211: add internal handler for wake_tx_queue")', which introduced ieee80211_handle_wake_tx_queue. Drivers started to use it with 'a790cc3a4fad ("wifi: mac80211: add wake_tx_queue callback to drivers")'. But only after fixing an independent bug with '4444bc2116ae ("wifi: mac80211: Proper mark iTXQs for resumption")' problematic concurrent calls really happened and exposed the initial issue. Fixes: c850e31f79f0 ("wifi: mac80211: add internal handler for wake_tx_queue") Reported-by: Thomas Mann <rauchwolke@gmx.net> Link: https://bugzilla.kernel.org/show_bug.cgi?id=217119 Link: https://lore.kernel.org/r/b8efebc6-4399-d0b8-b2a0-66843314616b@leemhuis.info/ Link: https://lore.kernel.org/r/b7445607128a6b9ed7c17fcdcf3679bfaf4aaea.camel@sipsolutions.net> CC: <stable@vger.kernel.org> Signed-off-by: Alexander Wetzel <alexander@wetzel-home.de> Link: https://lore.kernel.org/r/20230314211122.111688-1-alexander@wetzel-home.de [add missing spin_lock_init() noticed by Felix] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| * wifi: mac80211: check basic rates validityJohannes Berg2023-03-101-10/+11
| | | | | | | | | | | | | | | | | | | | | | When userspace sets basic rates, it might send us some rates list that's empty or consists of invalid values only. We're currently ignoring invalid values and then may end up with a rates bitmap that's empty, which later results in a warning. Reject the call if there were no valid rates. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* | wifi: mac80211: S1G capabilities information element in probe requestKieran Frewen2023-03-302-0/+24
| | | | | | | | | | | | | | | | | | | | Add the missing S1G capabilities information element to probe requests. Signed-off-by: Kieran Frewen <kieran.frewen@morsemicro.com> Co-developed-by: Gilad Itzkovitch <gilad.itzkovitch@morsemicro.com> Signed-off-by: Gilad Itzkovitch <gilad.itzkovitch@morsemicro.com> Link: https://lore.kernel.org/r/20230223032512.3848105-1-gilad.itzkovitch@virscient.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* | mac80211: minstrel_ht: remove unused n_supported variableTom Rix2023-03-301-6/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | clang with W=1 reports net/mac80211/rc80211_minstrel_ht.c:1711:6: error: variable 'n_supported' set but not used [-Werror,-Wunused-but-set-variable] int n_supported = 0; ^ This variable is not used so remove it. Signed-off-by: Tom Rix <trix@redhat.com> Reviewed-by: Simon Horman <simon.horman@corigine.com> Link: https://lore.kernel.org/r/20230325132610.1334820-1-trix@redhat.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* | mac80211: support RNR for EMA APAloka Dixit2023-03-243-8/+86
| | | | | | | | | | | | | | | | | | | | Generate EMA beacons, each including MBSSID and RNR elements at a given index. If number of stored RNR elements is more than the number of MBSSID elements then add those in every EMA beacon. Signed-off-by: Aloka Dixit <quic_alokad@quicinc.com> Link: https://lore.kernel.org/r/20230323113801.6903-3-quic_alokad@quicinc.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* | wifi: mac80211: use bullet list for amsdu_mesh_control formats listBagas Sanjaya2023-03-241-5/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit fe4a6d2db3ba ("wifi: mac80211: implement support for yet another mesh A-MSDU format") expands amsdu_mesh_control list to multi-line list. However, the expansion triggers Sphinx warning: Documentation/driver-api/80211/mac80211-advanced:214: ./net/mac80211/sta_info.h:628: WARNING: Unexpected indentation. Use bullet list instead to fix the warning. Link: https://lore.kernel.org/linux-next/20230323141548.659479ef@canb.auug.org.au/ Fixes: fe4a6d2db3bad4 ("wifi: mac80211: implement support for yet another mesh A-MSDU format") Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com> Reviewed-by: Simon Horman <simon.horman@corigine.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* | wifi: mac80211: generate EMA beacons in AP modeAloka Dixit2023-03-223-18/+137
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add APIs to generate an array of beacons for an EMA AP (enhanced multiple BSSID advertisements), each including a single MBSSID element. EMA profile periodicity equals the count of elements. - ieee80211_beacon_get_template_ema_list() - Generate and return all EMA beacon templates. Drivers must call ieee80211_beacon_free_ema_list() to free the memory. No change in the prototype for the existing API, ieee80211_beacon_get_template(), which should be used for non-EMA AP. - ieee80211_beacon_get_template_ema_index() - Generate a beacon which includes the multiple BSSID element at the given index. Drivers can use this function in a loop until NULL is returned which indicates end of available MBSSID elements. - ieee80211_beacon_free_ema_list() - free the memory allocated for the list of EMA beacon templates. Modify existing functions ieee80211_beacon_get_ap(), ieee80211_get_mbssid_beacon_len() and ieee80211_beacon_add_mbssid() to accept a new parameter for EMA index. Signed-off-by: Aloka Dixit <quic_alokad@quicinc.com> Co-developed-by: John Crispin <john@phrozen.org> Signed-off-by: John Crispin <john@phrozen.org> Link: https://lore.kernel.org/r/20221206005040.3177-2-quic_alokad@quicinc.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* | wifi: mac80211: implement support for yet another mesh A-MSDU formatFelix Fietkau2023-03-222-7/+20
| | | | | | | | | | | | | | | | | | | | MT7996 hardware supports mesh A-MSDU subframes in hardware, but uses a big-endian length field Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Ryder Lee <ryder.lee@mediatek.com> Link: https://lore.kernel.org/r/20230314095956.62085-7-nbd@nbd.name Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* | wifi: mac80211: add mesh fast-rx supportFelix Fietkau2023-03-221-5/+29
| | | | | | | | | | | | | | | | | | | | This helps bring down rx CPU usage by avoiding calls to the rx handlers in the slow path. Supports forwarding and local rx, including A-MSDU. Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Ryder Lee <ryder.lee@mediatek.com> Link: https://lore.kernel.org/r/20230314095956.62085-6-nbd@nbd.name Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* | wifi: mac80211: use mesh header cache to speed up mesh forwardingFelix Fietkau2023-03-223-5/+68
| | | | | | | | | | | | | | | | | | | | Significantly reduces mesh forwarding path CPU usage and enables the direct use of iTXQ. Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Ryder Lee <ryder.lee@mediatek.com> Link: https://lore.kernel.org/r/20230314095956.62085-5-nbd@nbd.name Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* | wifi: mac80211: mesh fast xmit supportFelix Fietkau2023-03-227-25/+507
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Previously, fast xmit only worked on interface types where initially a sta lookup is performed, and a cached header can be attached to the sta, requiring only some fields to be updated at runtime. This technique is not directly applicable for a mesh device type due to the dynamic nature of the topology and protocol. There are more addresses that need to be filled, and there is an extra header with a dynamic length based on the addressing mode. Change the code to cache entries contain a copy of the mesh subframe header + bridge tunnel header, as well as an embedded struct ieee80211_fast_tx, which contains the information for building the 802.11 header. Add a mesh specific early fast xmit call, which looks up a cached entry and adds only the mesh subframe header, before passing it over to the generic fast xmit code. To ensure the changes in network are reflected in these cached headers, flush affected cached entries on path changes, as well as other conditions that currently trigger a fast xmit check in other modes (key changes etc.) This code is loosely based on a previous implementation by: Sriram R <quic_srirrama@quicinc.com> Cc: Sriram R <quic_srirrama@quicinc.com> Signed-off-by: Ryder Lee <ryder.lee@mediatek.com> Signed-off-by: Felix Fietkau <nbd@nbd.name> Link: https://lore.kernel.org/r/20230314095956.62085-4-nbd@nbd.name Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* | wifi: mac80211: fix race in mesh sequence number assignmentFelix Fietkau2023-03-222-5/+3
| | | | | | | | | | | | | | | | | | Since the sequence number is shared across different tx queues, it needs to be atomic in order to avoid accidental duplicate assignment Signed-off-by: Felix Fietkau <nbd@nbd.name> Link: https://lore.kernel.org/r/20230314095956.62085-2-nbd@nbd.name Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* | wifi: mac80211: add support for letting drivers register tc offload supportFelix Fietkau2023-03-224-1/+55
| | | | | | | | | | | | | | | | | | | | On newer MediaTek SoCs (e.g. MT7986), WLAN->WLAN or WLAN->Ethernet flows can be offloaded by the SoC. In order to support that, the .ndo_setup_tc op is needed. Signed-off-by: Felix Fietkau <nbd@nbd.name> Link: https://lore.kernel.org/r/20230321091248.30947-1-nbd@nbd.name Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* | wifi: mac80211: add LDPC related flags in ieee80211_bss_confRyder Lee2023-03-071-0/+11
| | | | | | | | | | | | | | | | | | This is utilized to pass LDPC configurations from user space (i.e. hostapd) to driver. Signed-off-by: Ryder Lee <ryder.lee@mediatek.com> Link: https://lore.kernel.org/r/1de696aaa34efd77a926eb657b8c0fda05aaa177.1676628065.git.ryder.lee@mediatek.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* | wifi: mac80211: add EHT MU-MIMO related flags in ieee80211_bss_confRyder Lee2023-03-071-0/+16
| | | | | | | | | | | | | | | | | | | | Similar to VHT/HE. This is utilized to pass MU-MIMO configurations from user space (i.e. hostapd) to driver. Signed-off-by: Ryder Lee <ryder.lee@mediatek.com> Link: https://lore.kernel.org/r/8d9966c4c1e77cb1ade77d42bdc49905609192e9.1676628065.git.ryder.lee@mediatek.com [move into combined if statement, reset on !eht] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* | wifi: mac80211: introduce ieee80211_refresh_tx_agg_session_timer()Ryder Lee2023-03-071-0/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | This allows low level drivers to refresh the tx agg session timer, based on querying stats from the firmware usually. Especially for some mt76 devices support .net_fill_forward_path would bypass mac80211, which leads to tx BA session timeout clients that set a timeout in their AddBA response to our request, even if our request is without a timeout. Signed-off-by: Ryder Lee <ryder.lee@mediatek.com> Link: https://lore.kernel.org/r/7c3f72eac1c34921cd84a462e60d71e125862152.1676616450.git.ryder.lee@mediatek.com [slightly clarify commit message, add note about RCU] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* | wifi: mac80211: add support for driver adding radiotap TLVsMordechay Goodstein2023-03-071-55/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | The new TLV format enables adding TLVs after the fixed fields in radiotap, as part of the radiotap header. Support this and move vendor data to the TLV format, allowing a reuse of the RX_FLAG_RADIOTAP_VENDOR_DATA as the new RX_FLAG_RADIOTAP_TLV_AT_END flag. Signed-off-by: Mordechay Goodstein <mordechay.goodstein@intel.com> Signed-off-by: Gregory Greenman <gregory.greenman@intel.com> Link: https://lore.kernel.org/r/20230301115906.b18fd5da8477.I576400ec40a7b35ef97a3b09a99b3a49e9174786@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* | wifi: mac80211: fix ieee80211_link_set_associated() typeJohannes Berg2023-03-071-1/+1
| | | | | | | | | | | | | | | | | | | | | | The return type here should be u64 for the flags, even if it doesn't matter right now because it doesn't return any flags that don't fit into u32. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Gregory Greenman <gregory.greenman@intel.com> Link: https://lore.kernel.org/r/20230301115906.d67ccae57d60.Ia4768e547ba8b1deb2b84ce3bbfbe216d5bfff6a@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* | wifi: mac80211: simplify reasoning about EHT capa handlingJohannes Berg2023-03-071-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | Given the code in cfg80211, EHT capa cannot be non-NULL when HE capa is NULL, but it's easier to reason about it if both are checked and the compiler will likely integrate the check with the previous one for HE capa anyway. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Gregory Greenman <gregory.greenman@intel.com> Link: https://lore.kernel.org/r/20230301115906.7413d50d23bc.I6fef7484721be9bd5364f64921fc5e9168495f62@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* | wifi: mac80211: mlme: remove pointless sta checkJohannes Berg2023-03-071-1/+1
| | | | | | | | | | | | | | | | | | | | We already exited the function if sta ended up NULL, so just remove the extra check. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Gregory Greenman <gregory.greenman@intel.com> Link: https://lore.kernel.org/r/20230301115906.4cbac9cfd03a.I21ec81c96d246afdabc2b0807d3856e6b1182cb7@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* | wifi: mac80211: add netdev per-link debugfs data and driver hookBenjamin Berg2023-03-076-55/+232
| | | | | | | | | | | | | | | | | | | | | | This adds the infrastructure to have netdev specific per-link data both for mac80211 and the driver in debugfs. For the driver, a new callback is added which is only used if MLO is supported. Signed-off-by: Benjamin Berg <benjamin.berg@intel.com> Signed-off-by: Gregory Greenman <gregory.greenman@intel.com> Link: https://lore.kernel.org/r/20230301115906.fb4c947e4df8.I69b3516ddf4c8a7501b395f652d6063444ecad63@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* | wifi: mac80211: remove SMPS from AP debugfsBenjamin Berg2023-03-071-1/+0
| | | | | | | | | | | | | | | | | | | | The spatial multiplexing power save feature does not apply to AP mode. Remove it from debugfs in this case. Signed-off-by: Benjamin Berg <benjamin.berg@intel.com> Signed-off-by: Gregory Greenman <gregory.greenman@intel.com> Link: https://lore.kernel.org/r/20230301115906.01b167027dd5.Iee69f2e4df98581f259ef2c76309b940b20174be@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* | wifi: mac80211: add pointer from bss_conf to vifBenjamin Berg2023-03-071-0/+1
| | | | | | | | | | | | | | | | | | | | | | While often not needed, this considerably simplifies going from a link specific bss_config to the vif. This helps with e.g. creating link specific debugfs entries inside drivers. Signed-off-by: Benjamin Berg <benjamin.berg@intel.com> Signed-off-by: Gregory Greenman <gregory.greenman@intel.com> Link: https://lore.kernel.org/r/20230301115906.46f701a10ed5.I20390b2a8165ff222d66585915689206ea93222b@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* | wifi: mac80211: warn only once on AP probeJohannes Berg2023-03-071-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We should perhaps support this API for MLO, but it's not clear that it makes sense, in any case then we'd have to update it to probe the correct BSS. For now, if it happens, warn only once so that we don't get flooded with messages if the driver misbehaves and calls this. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Gregory Greenman <gregory.greenman@intel.com> Link: https://lore.kernel.org/r/20230301115906.1c8499b6fbe6.I1a76a2be3b42ff93904870ac069f0319507adc23@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-17 18:19:29 +0000