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2019-11-20arm64: uaccess: Remove uaccess_*_not_uao asm macrosPavel Tatashin7-35/+27
It is safer and simpler to drop the uaccess assembly macros in favour of inline C functions. Although this bloats the Image size slightly, it aligns our user copy routines with '{get,put}_user()' and generally makes the code a lot easier to reason about. Cc: Catalin Marinas <[email protected]> Reviewed-by: Mark Rutland <[email protected]> Tested-by: Mark Rutland <[email protected]> Signed-off-by: Pavel Tatashin <[email protected]> [will: tweaked commit message and changed temporary variable names] Signed-off-by: Will Deacon <[email protected]>
2019-11-20arm64: uaccess: Ensure PAN is re-enabled after unhandled uaccess faultPavel Tatashin4-0/+4
A number of our uaccess routines ('__arch_clear_user()' and '__arch_copy_{in,from,to}_user()') fail to re-enable PAN if they encounter an unhandled fault whilst accessing userspace. For CPUs implementing both hardware PAN and UAO, this bug has no effect when both extensions are in use by the kernel. For CPUs implementing hardware PAN but not UAO, this means that a kernel using hardware PAN may execute portions of code with PAN inadvertently disabled, opening us up to potential security vulnerabilities that rely on userspace access from within the kernel which would usually be prevented by this mechanism. In other words, parts of the kernel run the same way as they would on a CPU without PAN implemented/emulated at all. For CPUs not implementing hardware PAN and instead relying on software emulation via 'CONFIG_ARM64_SW_TTBR0_PAN=y', the impact is unfortunately much worse. Calling 'schedule()' with software PAN disabled means that the next task will execute in the kernel using the page-table and ASID of the previous process even after 'switch_mm()', since the actual hardware switch is deferred until return to userspace. At this point, or if there is a intermediate call to 'uaccess_enable()', the page-table and ASID of the new process are installed. Sadly, due to the changes introduced by KPTI, this is not an atomic operation and there is a very small window (two instructions) where the CPU is configured with the page-table of the old task and the ASID of the new task; a speculative access in this state is disastrous because it would corrupt the TLB entries for the new task with mappings from the previous address space. As Pavel explains: | I was able to reproduce memory corruption problem on Broadcom's SoC | ARMv8-A like this: | | Enable software perf-events with PERF_SAMPLE_CALLCHAIN so userland's | stack is accessed and copied. | | The test program performed the following on every CPU and forking | many processes: | | unsigned long *map = mmap(NULL, PAGE_SIZE, PROT_READ|PROT_WRITE, | MAP_SHARED | MAP_ANONYMOUS, -1, 0); | map[0] = getpid(); | sched_yield(); | if (map[0] != getpid()) { | fprintf(stderr, "Corruption detected!"); | } | munmap(map, PAGE_SIZE); | | From time to time I was getting map[0] to contain pid for a | different process. Ensure that PAN is re-enabled when returning after an unhandled user fault from our uaccess routines. Cc: Catalin Marinas <[email protected]> Reviewed-by: Mark Rutland <[email protected]> Tested-by: Mark Rutland <[email protected]> Cc: <[email protected]> Fixes: 338d4f49d6f7 ("arm64: kernel: Add support for Privileged Access Never") Signed-off-by: Pavel Tatashin <[email protected]> [will: rewrote commit message] Signed-off-by: Will Deacon <[email protected]>
2019-11-20lwtunnel: add support for multiple geneve optsXin Long1-36/+75
geneve RFC (draft-ietf-nvo3-geneve-14) allows a geneve packet to carry multiple geneve opts, so it's necessary for lwtunnel to support adding multiple geneve opts in one lwtunnel route. But vxlan and erspan opts are still only allowed to add one option. With this patch, iproute2 could make it like: # ip r a 1.1.1.0/24 encap ip id 1 geneve_opts 0:0:12121212,1:2:12121212 \ dst 10.1.0.2 dev geneve1 # ip r a 1.1.1.0/24 encap ip id 1 vxlan_opts 456 \ dst 10.1.0.2 dev erspan1 # ip r a 1.1.1.0/24 encap ip id 1 erspan_opts 1:123:0:0 \ dst 10.1.0.2 dev erspan1 Which are pretty much like cls_flower and act_tunnel_key. Signed-off-by: Xin Long <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-11-20Merge tag 'mt76-for-kvalo-2019-11-20' of https://github.com/nbd168/wirelessKalle Valo53-399/+1466
mt76 patches for 5.5 * monitor mode fix for mt7615 * fixes for rx aggregation race conditions * cleanups * mt7615 smart carrier sense support * code unification / deduplication * mt7615 debugfs improvements * debugfs aggregation statistics * airtime fairness support * mt76x0 OF mac address support * locking fixes * usb support improvements * rate control fixes
2019-11-20Merge tag 'iwlwifi-next-for-kalle-2019-11-20' of ↵Kalle Valo16-41/+161
git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-next Patches intended for v5.5 * Fix a merge damage that causes issues with high-throuput on AX200+; * Support TX/RX antennas reporting; * Small fix in DVM's BT link-quality code; * Bump supported FW API version to 52; * Yet another scan FW API update; * Some clean-ups;
2019-11-20spi: Fix Kconfig indentationKrzysztof Kozlowski1-9/+9
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 <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2019-11-20regulator: Fix Kconfig indentationKrzysztof Kozlowski1-4/+4
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 <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2019-11-20regulator: tps6105x: add optional devicetree supportSven Van Asbroeck1-0/+2
Tell the regulator framework to retrieve regulator init data from the 'regulator' subnode, or from the parent mfd device's platform data. Example: i2c0 { tps61052@33 { compatible = "ti,tps61052"; reg = <0x33>; regulator { regulator-min-microvolt = <5000000>; regulator-max-microvolt = <5000000>; regulator-always-on; }; }; }; Tree: next-20191118 Signed-off-by: Sven Van Asbroeck <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2019-11-20tps6105x: add optional devicetree supportSven Van Asbroeck1-3/+31
This driver currently requires platform data to specify the operational mode and regulator init data (in case of regulator mode). Optionally specify the operational mode by looking at the name of the devicetree child node. Example: put chip in regulator mode: i2c0 { tps61052@33 { compatible = "ti,tps61052"; reg = <0x33>; regulator { regulator-min-microvolt = <5000000>; regulator-max-microvolt = <5000000>; regulator-always-on; }; }; }; Tree: linux-next Signed-off-by: Sven Van Asbroeck <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2019-11-20s390/cpumf: Adjust registration of s390 PMU device driversThomas Richter2-16/+15
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 <[email protected]> Signed-off-by: Vasily Gorbik <[email protected]>
2019-11-20dm: Fix Kconfig indentationKrzysztof Kozlowski1-27/+27
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 <[email protected]> Signed-off-by: Mike Snitzer <[email protected]>
2019-11-20KVM: nVMX: Assume TLB entries of L1 and L2 are tagged differently if L0 use EPTLiran Alon1-2/+4
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 <[email protected]> Reviewed-by: Krish Sadhukhan <[email protected]> Signed-off-by: Liran Alon <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2019-11-20KVM: x86: Unexport kvm_vcpu_reload_apic_access_page()Liran Alon1-1/+0
The function is only used in kvm.ko module. Reviewed-by: Mark Kanda <[email protected]> Signed-off-by: Liran Alon <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2019-11-20KVM: nVMX: add CR4_LA57 bit to nested CR4_FIXED1Chenyi Qiang1-0/+1
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 <[email protected]> Reviewed-by: Xiaoyao Li <[email protected]> Reviewed-by: Liran Alon <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2019-11-20KVM: nVMX: Use semi-colon instead of comma for exit-handlers initializationLiran Alon1-13/+13
Reviewed-by: Mark Kanda <[email protected]> Signed-off-by: Liran Alon <[email protected]> Reviewed-by: Jim Mattson <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2019-11-20KVM: x86: Zero the IOAPIC scan request dest vCPUs bitmapNitesh Narayan Lal1-0/+1
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 <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2019-11-20mt76: mt76u: fix endpoint definition orderLorenzo Bianconi1-1/+1
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 <[email protected]> Signed-off-by: Felix Fietkau <[email protected]>
2019-11-20mt76: mt7615: read {tx,rx} mask from eepromLorenzo Bianconi4-2/+23
Parse configured {tx,rx} mask from eeprom data instead of just setting it to four tx-rx streams Signed-off-by: Lorenzo Bianconi <[email protected]> Signed-off-by: Felix Fietkau <[email protected]>
2019-11-20mt76: move mt76_get_antenna in mt76_core moduleLorenzo Bianconi8-14/+20
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 <[email protected]> Signed-off-by: Felix Fietkau <[email protected]>
2019-11-20mt76: fix possible out-of-bound access in mt7615_fill_txs/mt7603_fill_txsLorenzo Bianconi2-2/+6
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 <[email protected]> Signed-off-by: Felix Fietkau <[email protected]>
2019-11-20Revert "mt76: mt76x0e: don't use hw encryption for MT7630E"Stanislaw Gruszka1-14/+1
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 <[email protected]> Acked-by: Lorenzo Bianconi <[email protected]> Signed-off-by: Felix Fietkau <[email protected]>
2019-11-20mt76: mt7615: disable radar pattern detector during scanningLorenzo Bianconi1-2/+4
Set switch_reason to CH_SWITCH_SCAN_BYPASS_DPD during frequency scanning in order to disable radar pattern detector Signed-off-by: Lorenzo Bianconi <[email protected]> Signed-off-by: Felix Fietkau <[email protected]>
2019-11-20mt76: move interface_modes definition in mt76_core moduleLorenzo Bianconi4-24/+7
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 <[email protected]> Signed-off-by: Felix Fietkau <[email protected]>
2019-11-20mt76: mt7615: add ibss supportLorenzo Bianconi3-0/+15
Enable IFTYPE_ADHOC support on 7615 devices. The feature has been tested using a mt76x2 device as wireless peer. Signed-off-by: Lorenzo Bianconi <[email protected]> Signed-off-by: Felix Fietkau <[email protected]>
2019-11-20mt76: move SUPPORTS_REORDERING_BUFFER hw property in mt76_register_deviceLorenzo Bianconi4-3/+1
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 <[email protected]> Signed-off-by: Felix Fietkau <[email protected]>
2019-11-20mt76: use mt76_dev in mt76_is_{mmio,usb}Lorenzo Bianconi6-15/+15
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 <[email protected]> Signed-off-by: Felix Fietkau <[email protected]>
2019-11-20mt76: Remove set but not used variable 'idx'zhengbin1-2/+1
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 <[email protected]> Signed-off-by: zhengbin <[email protected]> Signed-off-by: Felix Fietkau <[email protected]>
2019-11-20mt76: mt76u: rely on a dedicated stats workqueueLorenzo Bianconi4-10/+25
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 <[email protected]> Signed-off-by: Felix Fietkau <[email protected]>
2019-11-20mt76: mt76u: rely on usb_interface instead of usb_devLorenzo Bianconi4-6/+13
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 <[email protected]> Tested-By: Zero_Chaos <[email protected]> Signed-off-by: Felix Fietkau <[email protected]>
2019-11-20mt76: mt7615: remove unneeded semicolonYueHaibing2-2/+2
remove unneeded semicolon. This is detected by coccinelle. Signed-off-by: YueHaibing <[email protected]> Signed-off-by: Felix Fietkau <[email protected]>
2019-11-20mt76: mt76x0: remove 350ms delay in mt76x0_phy_calibrateLorenzo Bianconi1-1/+0
Since mt76x0 does not save the phy calibration data it is not necessary to wait 350ms in mt76x0_phy_calibrate Tested-by: Sid Hayn <[email protected]> Signed-off-by: Lorenzo Bianconi <[email protected]> Signed-off-by: Felix Fietkau <[email protected]>
2019-11-20mt76: mt76x02u: update ewma pkt len in mt76x02u_tx_prepare_skbLorenzo Bianconi1-0/+6
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 <[email protected]> Signed-off-by: Felix Fietkau <[email protected]>
2019-11-20mt76: remove obsolete .add_buf() from struct mt76_queue_opsFelix Fietkau1-4/+0
It hasn't been used in a while Signed-off-by: Felix Fietkau <[email protected]>
2019-11-20mt76: add sanity check for a-mpdu rx wcid indexFelix Fietkau1-1/+1
Avoid dereferencing invalid ids Signed-off-by: Felix Fietkau <[email protected]>
2019-11-20mt76: refactor cc_lock locking schemeLorenzo Bianconi2-13/+19
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 <[email protected]> Signed-off-by: Lorenzo Bianconi <[email protected]> Signed-off-by: Felix Fietkau <[email protected]>
2019-11-20mt76: mt76x0: eeprom: add support for MAC address from OFPawel Dembicki1-0/+1
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 <[email protected]> [adjusted for kernel submission] Signed-off-by: Adrian Schmutzler <[email protected]> Signed-off-by: Felix Fietkau <[email protected]>
2019-11-20mt76: avoid enabling interrupt if NAPI poll is still pendingFelix Fietkau1-3/+1
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 <[email protected]>
2019-11-20mt76: fix aggregation stop issueFelix Fietkau1-4/+6
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 <[email protected]>
2019-11-20mt76: drop rcu read lock in mt76_rx_aggr_stopFelix Fietkau1-7/+3
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 <[email protected]>
2019-11-20mt76: add missing locking around ampdu actionFelix Fietkau3-0/+6
This is needed primarily to avoid races in dealing with rx aggregation related data structures Signed-off-by: Felix Fietkau <[email protected]>
2019-11-20mt76: do not use devm API for led classdevFelix Fietkau1-1/+10
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 <[email protected]>
2019-11-20mt76: enable airtime fairnessFelix Fietkau1-0/+1
It is supported by all hardware drivers now Signed-off-by: Felix Fietkau <[email protected]> Acked-by: Toke Høiland-Jørgensen <[email protected]>
2019-11-20mt76: mt7615: track tx/rx airtime for airtime fairnessLorenzo Bianconi6-3/+137
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 <[email protected]> Signed-off-by: Lorenzo Bianconi <[email protected]> Signed-off-by: Felix Fietkau <[email protected]>
2019-11-20mt76: mt7615: introduce mt7615_mac_wtbl_update routineLorenzo Bianconi2-5/+12
Introduce mt7615_mac_wtbl_update utility routine in order to update WTBL update register Signed-off-by: Lorenzo Bianconi <[email protected]> Signed-off-by: Felix Fietkau <[email protected]>
2019-11-20mt76: mt7615: fix survey channel busy timeFelix Fietkau2-4/+8
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 <[email protected]>
2019-11-20mt76: mt7615: report tx_time, bss_rx and busy time to mac80211Lorenzo Bianconi7-4/+45
Report tx time/rx time and obss time from hw mib counters to fill survey info requested by mac80211 Co-developed-by: Felix Fietkau <[email protected]> Signed-off-by: Lorenzo Bianconi <[email protected]> Signed-off-by: Felix Fietkau <[email protected]>
2019-11-20mt76: mt76x02: track approximate tx airtime for airtime fairness and surveyFelix Fietkau12-9/+116
Estimate by calculating duration for EWMA packet size + estimated A-MPDU length on tx status events Signed-off-by: Felix Fietkau <[email protected]>
2019-11-20mt76: mt76x02: move MT_CH_TIME_CFG init to mt76x02_mac_cc_resetFelix Fietkau5-32/+9
Reduces code duplication and adds missing bits for USB variants Signed-off-by: Felix Fietkau <[email protected]>
2019-11-20mt76: unify channel survey update codeFelix Fietkau8-52/+33
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 <[email protected]>
2019-11-20mt76: mt7603: switch to a different counter for survey busy timeFelix Fietkau1-1/+1
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 <[email protected]>
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