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2019-11-20s390/cpumf: Adjust registration of s390 PMU device driversThomas Richter
Linux-next commit titled "perf/core: Optimize perf_init_event()" changed the semantics of PMU device driver registration. It was done to speed up the lookup/handling of PMU device driver specific events. It also enforces that only one PMU device driver will be registered of type PERF_EVENT_RAW. This change added these line in function perf_pmu_register(): ... + ret = idr_alloc(&pmu_idr, pmu, max, 0, GFP_KERNEL); + if (ret < 0) goto free_pdc; + + WARN_ON(type >= 0 && ret != type); The warn_on generates a message. We have 3 PMU device drivers, each registered as type PERF_TYPE_RAW. The cf_diag device driver (arch/s390/kernel/perf_cpumf_cf_diag.c) always hits the WARN_ON because it is the second PMU device driver (after sampling device driver arch/s390/kernel/perf_cpumf_sf.c) which is registered as type 4 (PERF_TYPE_RAW). So when the sampling device driver is registered, ret has value 4. When cf_diag device driver is registered with type 4, ret has value of 5 and WARN_ON fires. Adjust the PMU device drivers for s390 to support the new semantics required by perf_pmu_register(). Signed-off-by: Thomas Richter <tmricht@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2019-11-20dm: Fix Kconfig indentationKrzysztof Kozlowski
Adjust indentation from spaces to tab (+optional two spaces) as in coding style with command like: $ sed -e 's/^ /\t/' -i */Kconfig Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2019-11-20KVM: nVMX: Assume TLB entries of L1 and L2 are tagged differently if L0 use EPTLiran Alon
Since commit 1313cc2bd8f6 ("kvm: mmu: Add guest_mode to kvm_mmu_page_role"), guest_mode was added to mmu-role and therefore if L0 use EPT, it will always run L1 and L2 with different EPTP. i.e. EPTP01!=EPTP02. Because TLB entries are tagged with EP4TA, KVM can assume TLB entries populated while running L2 are tagged differently than TLB entries populated while running L1. Therefore, update nested_has_guest_tlb_tag() to consider if L0 use EPT instead of if L1 use EPT. Reviewed-by: Joao Martins <joao.m.martins@oracle.com> Reviewed-by: Krish Sadhukhan <krish.sadhukhan@oracle.com> Signed-off-by: Liran Alon <liran.alon@oracle.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-11-20KVM: x86: Unexport kvm_vcpu_reload_apic_access_page()Liran Alon
The function is only used in kvm.ko module. Reviewed-by: Mark Kanda <mark.kanda@oracle.com> Signed-off-by: Liran Alon <liran.alon@oracle.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-11-20KVM: nVMX: add CR4_LA57 bit to nested CR4_FIXED1Chenyi Qiang
When L1 guest uses 5-level paging, it fails vm-entry to L2 due to invalid host-state. It needs to add CR4_LA57 bit to nested CR4_FIXED1 MSR. Signed-off-by: Chenyi Qiang <chenyi.qiang@intel.com> Reviewed-by: Xiaoyao Li <xiaoyao.li@intel.com> Reviewed-by: Liran Alon <liran.alon@oracle.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-11-20KVM: nVMX: Use semi-colon instead of comma for exit-handlers initializationLiran Alon
Reviewed-by: Mark Kanda <mark.kanda@oracle.com> Signed-off-by: Liran Alon <liran.alon@oracle.com> Reviewed-by: Jim Mattson <jmattson@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-11-20KVM: x86: Zero the IOAPIC scan request dest vCPUs bitmapNitesh Narayan Lal
Not zeroing the bitmap used for identifying the destination vCPUs for an IOAPIC scan request in fixed delivery mode could lead to waking up unwanted vCPUs. This patch zeroes the vCPU bitmap before passing it to kvm_bitmap_or_dest_vcpus(), which is responsible for setting the bitmap with the bits corresponding to the destination vCPUs. Fixes: 7ee30bc132c6("KVM: x86: deliver KVM IOAPIC scan request to target vCPUs") Signed-off-by: Nitesh Narayan Lal <nitesh@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-11-20mt76: mt76u: fix endpoint definition orderLorenzo Bianconi
Even if they are not currently used fix BK/BE endpoint definition order. Fixes: b40b15e1521f ("mt76: add usb support to mt76 layer") Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20mt76: mt7615: read {tx,rx} mask from eepromLorenzo Bianconi
Parse configured {tx,rx} mask from eeprom data instead of just setting it to four tx-rx streams Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20mt76: move mt76_get_antenna in mt76_core moduleLorenzo Bianconi
Move mt76_get_antenna in mac80211.c in order to be reused by all drivers. Initialize .get_antenna function pointer for mt76x0, mt7603, mt7615 and mt76x2u drivers Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20mt76: fix possible out-of-bound access in mt7615_fill_txs/mt7603_fill_txsLorenzo Bianconi
Fix possible out-of-bound access of status rates array in mt7615_fill_txs/mt7603_fill_txs routines Fixes: c5211e997eca ("mt76: mt7603: rework and fix tx status reporting") Fixes: 4af81f02b49c ("mt76: mt7615: sync with mt7603 rate control changes") Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20Revert "mt76: mt76x0e: don't use hw encryption for MT7630E"Stanislaw Gruszka
This reverts commit 34b0e9b767bfa09ae233ca0d6ceb299bf2e24600. Since commit 7bd0650be63c ("mt76: dma: fix buffer unmap with non-linear skbs") is no longer necessary to disable HW encryption for MT7630E. Disabling HW encryption helped previously because somehow fragmented skb's are not created if mac80211 encrypt frames, so buffer unmap bug of non-linear skbs was not triggered. Now since this bug is properly fixed by commit 7bd0650be63c ("mt76: dma: fix buffer unmap with non-linear skbs") , we can enable HW encryption back. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Acked-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20mt76: mt7615: disable radar pattern detector during scanningLorenzo Bianconi
Set switch_reason to CH_SWITCH_SCAN_BYPASS_DPD during frequency scanning in order to disable radar pattern detector Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20mt76: move interface_modes definition in mt76_core moduleLorenzo Bianconi
Move interface modes declaration in common code since now mt76 chipsets support all modes (NL80211_IFTYPE_STATION, NL80211_IFTYPE_AP, NL80211_IFTYPE_MESH_POINT and NL80211_IFTYPE_ADHOC) Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20mt76: mt7615: add ibss supportLorenzo Bianconi
Enable IFTYPE_ADHOC support on 7615 devices. The feature has been tested using a mt76x2 device as wireless peer. Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20mt76: move SUPPORTS_REORDERING_BUFFER hw property in mt76_register_deviceLorenzo Bianconi
Move SUPPORTS_REORDERING_BUFFER hw property configuration from chip specific code to mt76_register_device since it is supported by all mt76 drivers Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20mt76: use mt76_dev in mt76_is_{mmio,usb}Lorenzo Bianconi
Convert mt76_is_mmio and mt76_is_usb to rely on mt76_dev instead of mt76x02_dev since this is a property not strictly related to hw chipset and it will be more reusable Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20mt76: Remove set but not used variable 'idx'zhengbin
Fixes gcc '-Wunused-but-set-variable' warning: drivers/net/wireless/mediatek/mt76/dma.c: In function mt76_dma_rx_fill: drivers/net/wireless/mediatek/mt76/dma.c:377:6: warning: variable idx set but not used [-Wunused-but-set-variable] It is not used since commit 17f1de56df05 ("mt76: add common code shared between multiple chipsets") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: zhengbin <zhengbin13@huawei.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20mt76: mt76u: rely on a dedicated stats workqueueLorenzo Bianconi
rate controller and throughput are very sensitive to tx status timing. In order to improve performances when the system is heavily loaded, substitute stat_work delayed_work with a regular work_struct and create a mt76u dedicated workqueue for tx status reporting Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20mt76: mt76u: rely on usb_interface instead of usb_devLorenzo Bianconi
usb drivers are supposed to communicate using usb_interface instead mt76x{0,2}u is now registering through usb_device. Fix it by passing usb_intf device to mt76_alloc_device routine. Fixes: 112f980ac8926 ("mt76usb: use usb_dev private data") Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Tested-By: Zero_Chaos <sidhayn@gmail.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20mt76: mt7615: remove unneeded semicolonYueHaibing
remove unneeded semicolon. This is detected by coccinelle. Signed-off-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20mt76: mt76x0: remove 350ms delay in mt76x0_phy_calibrateLorenzo Bianconi
Since mt76x0 does not save the phy calibration data it is not necessary to wait 350ms in mt76x0_phy_calibrate Tested-by: Sid Hayn <sidhayn@gmail.com> Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20mt76: mt76x02u: update ewma pkt len in mt76x02u_tx_prepare_skbLorenzo Bianconi
Update ewma packet length in mt76x02u_tx_prepare_skb as it is done for pci counterpart in order to properly estimate tx time on current channel Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20mt76: remove obsolete .add_buf() from struct mt76_queue_opsFelix Fietkau
It hasn't been used in a while Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20mt76: add sanity check for a-mpdu rx wcid indexFelix Fietkau
Avoid dereferencing invalid ids Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20mt76: refactor cc_lock locking schemeLorenzo Bianconi
Read busy counters not holding cc_lock spinlock since usb read can't be performed in interrupt context. Move cc_active and cc_rx counters out of cc_lock since they are not modified in interrupt context. Grab cc_lock updating cur_cc_bss_rx in mt76_airtime_report and do not hold rx_lock in mt76_update_survey. Moreover grab mt76 mutex in mt76_get_survey before running mt76_update_survey. This patch fixes the following 'schedule while atomic' [ 291.790866] BUG: scheduling while atomic: iw/2161/0x00000202 [ 291.791002] Preemption disabled at: [ 291.791007] [<0000000000000000>] 0x0 [ 291.791015] CPU: 0 PID: 2161 Comm: iw Tainted: G W 5.4.= 0-rc2-3-ARCH-00104-g9e208aa06c21 #1 [ 291.791017] Hardware name: LENOVO 2349QM6/2349QM6, BIOS G1ETC2WW (2.82=) 08/07/2019 [ 291.791019] Call Trace: [ 291.791042] dump_stack+0x5c/0x80 [ 291.791049] __schedule_bug.cold+0x8e/0x9b [ 291.791055] __schedule+0x5f8/0x770 [ 291.791062] schedule+0x43/0xd0 [ 291.791068] schedule_preempt_disabled+0x14/0x20 [ 291.791074] __mutex_lock.isra.0+0x18a/0x530 [ 291.791099] mt76u_rr+0x1f/0x40 [mt76_usb] [ 291.791113] mt76x02_update_channel+0x22/0x40 [mt76x02_lib] [ 291.791122] mt76_update_survey+0x42/0xe0 [mt76] [ 291.791129] mt76_get_survey+0x2f/0x1b0 [mt76] [ 291.791170] ieee80211_dump_survey+0x5e/0x140 [mac80211] [ 291.791217] nl80211_dump_survey+0x13c/0x2f0 [cfg80211] [ 291.791222] ? __kmalloc_reserve.isra.0+0x2d/0x70 [ 291.791225] ? __alloc_skb+0x96/0x1d0 [ 291.791229] netlink_dump+0x17b/0x370 [ 291.791247] __netlink_dump_start+0x16f/0x1e0 [ 291.791253] genl_family_rcv_msg+0x396/0x410 [ 291.791290] ? nl80211_prepare_wdev_dump+0x1b0/0x1b0 [cfg80211] [ 291.791297] ? _raw_spin_unlock_irqrestore+0x20/0x40 [ 291.791312] ? __wake_up_common_lock+0x8a/0xc0 [ 291.791316] genl_rcv_msg+0x47/0x90 [ 291.791320] ? genl_family_rcv_msg+0x410/0x410 [ 291.791323] netlink_rcv_skb+0x49/0x110 [ 291.791329] genl_rcv+0x24/0x40 [ 291.791333] netlink_unicast+0x171/0x200 [ 291.791340] netlink_sendmsg+0x208/0x3d0 [ 291.791358] sock_sendmsg+0x5e/0x60 [ 291.791361] ___sys_sendmsg+0x2ae/0x330 [ 291.791368] ? filemap_map_pages+0x272/0x390 [ 291.791374] ? _raw_spin_unlock+0x16/0x30 [ 291.791379] ? __handle_mm_fault+0x112f/0x1390 [ 291.791388] __sys_sendmsg+0x59/0xa0 [ 291.791396] do_syscall_64+0x5b/0x1a0 [ 291.791400] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 291.791404] RIP: 0033:0x7f5d0c7f37b7 [ 291.791418] Code: 64 89 02 48 c7 c0 ff ff ff ff eb bb 0f 1f 80 00 00 0= 0 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05= <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10 [ 291.791421] RSP: 002b:00007ffe8b5d0538 EFLAGS: 00000246 ORIG_RAX: 0000= 00000000002e [ 291.791426] RAX: ffffffffffffffda RBX: 000055a038e6c390 RCX: 00007f5d0= c7f37b7 [ 291.791430] RDX: 0000000000000000 RSI: 00007ffe8b5d0570 RDI: 000000000= 0000003 [ 291.791434] RBP: 000055a038e718c0 R08: 000055a038e6c02a R09: 000000000= 0000002 [ 291.791438] R10: 000055a03808cb00 R11: 0000000000000246 R12: 000055a03= 8e71780 [ 291.791440] R13: 00007ffe8b5d0570 R14: 000055a038e717d0 R15: 000055a03= 8e718c0 [ 291.791480] NOHZ: local_softirq_pending 202 Fixes: 168aea24f4bb ("mt76: mt76x02u: enable survey support") Tested-by: Markus Theil <markus.theil@tu-ilmenau.de> Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20mt76: mt76x0: eeprom: add support for MAC address from OFPawel Dembicki
mt76x0e driver only supports MAC addresses from calibration data eeprom. Many routers however do not have a valid stock address set in this field. This patch makes it possible to take a MAC address from OF (e.g. from mtd). Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com> [adjusted for kernel submission] Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20mt76: avoid enabling interrupt if NAPI poll is still pendingFelix Fietkau
if napi_complete() returns false, it means that polling is still pending. Interrupts should not fire until the polling is no longer scheduled Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20mt76: fix aggregation stop issueFelix Fietkau
Cancel the workqueue after the tid has been cleaned up, in order to avoid a possible rescheduling from within the work function. Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20mt76: drop rcu read lock in mt76_rx_aggr_stopFelix Fietkau
A rcu read locked section is not allowed to sleep, and the rcu lock here isn't actually necessary, because we're holding dev->mutex. Fixes an issue when the tid work item is still running while freeing a station or stopping the aggregation session Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20mt76: add missing locking around ampdu actionFelix Fietkau
This is needed primarily to avoid races in dealing with rx aggregation related data structures Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20mt76: do not use devm API for led classdevFelix Fietkau
With the devm API, the unregister happens after the device cleanup is done, after which the struct mt76_dev which contains the led_cdev has already been freed. This leads to a use-after-free bug that can crash the system. Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20mt76: enable airtime fairnessFelix Fietkau
It is supported by all hardware drivers now Signed-off-by: Felix Fietkau <nbd@nbd.name> Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
2019-11-20mt76: mt7615: track tx/rx airtime for airtime fairnessLorenzo Bianconi
Poll per-station hardware counters available in WTBL after tx/rx status events in order to report tx/rx airtime to mac80211 layer Co-developed-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20mt76: mt7615: introduce mt7615_mac_wtbl_update routineLorenzo Bianconi
Introduce mt7615_mac_wtbl_update utility routine in order to update WTBL update register Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20mt76: mt7615: fix survey channel busy timeFelix Fietkau
Like on mt7603, MIB status register 16 tracks CCA time, but does not include tx time. Switch to status register 9 to includ NAV and tx time as well. Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20mt76: mt7615: report tx_time, bss_rx and busy time to mac80211Lorenzo Bianconi
Report tx time/rx time and obss time from hw mib counters to fill survey info requested by mac80211 Co-developed-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20mt76: mt76x02: track approximate tx airtime for airtime fairness and surveyFelix Fietkau
Estimate by calculating duration for EWMA packet size + estimated A-MPDU length on tx status events Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20mt76: mt76x02: move MT_CH_TIME_CFG init to mt76x02_mac_cc_resetFelix Fietkau
Reduces code duplication and adds missing bits for USB variants Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20mt76: unify channel survey update codeFelix Fietkau
Host time is used to calculate the channel active time on mt7603 and mt7615. Use the same on mt76x02 and move the lock to core code to get rid of some duplicated code. Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20mt76: mt7603: switch to a different counter for survey busy timeFelix Fietkau
MT_MIB_STAT_PSCCA only counts rx CCA busy time, which does not include tx time. MT_MIB_STAT_CCA counts full busy time, including Rx, Tx and NAV Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20mt76: mt7603: track tx airtime for airtime fairness and surveyFelix Fietkau
Poll per-station hardware counters after tx status events Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20mt76: track rx airtime for airtime fairness and surveyFelix Fietkau
Report total rx airtime for valid stations as BSS rx time in survey mt7615 is left out for now, it will be supported later by reading hardware counters instead of calculating airtime in software Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20mt76: store current channel survey_state in struct mt76_devFelix Fietkau
Move mt76_channel_state() from mt76.h to mac80211.c Preparation for updating channel state from more places in the drivers/core Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20mt76: rename mt76_driver_ops txwi_flags to drv_flags and include tx aligned4Felix Fietkau
This reduces the struct size and is useful for adding more flags later Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20mt76: report rx a-mpdu subframe statusFelix Fietkau
This can be used in monitor mode to figure out which subframes were sent as part of which A-MPDU Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20mt76: mt7603: remove q_rx field from struct mt7603_devFelix Fietkau
It is no longer used Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20mt76: mt7603: collect aggregation statsLorenzo Bianconi
Introduce ampdu_stat entry in mt7603 debugfs in order to dump 802.11 aggr cumulative statistics Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20mt76: mt7615: collect aggregation statsLorenzo Bianconi
Introduce ampdu_stat entry in mt7615 debugfs in order to dump 802.11 aggr cumulative statistics Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-11-20mt76: move aggr_stats array in mt76_devLorenzo Bianconi
Move aggr_stats array from mt76x02_dev to mt76_dev in order to be reused adding aggregation stats for mt7603/mt7615 drivers Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
generated by cgit (git 2.34.1) at 2025-09-13 21:46:20 +0000