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2020-01-17net: phy: dp83867: Set FORCE_LINK_GOOD to default after resetMichael Grzeschik
According to the Datasheet this bit should be 0 (Normal operation) in default. With the FORCE_LINK_GOOD bit set, it is not possible to get a link. This patch sets FORCE_LINK_GOOD to the default value after resetting the phy. Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-17perf/x86/intel/uncore: Remove PCIe3 unit for SNRKan Liang
The PCIe Root Port driver for CPU Complex PCIe Root Ports are not loaded on SNR. The device ID for SNR PCIe3 unit is used by both uncore driver and the PCIe Root Port driver. If uncore driver is loaded, the PCIe Root Port driver never be probed. Remove the PCIe3 unit for SNR for now. The support for PCIe3 unit will be added later separately. Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://lkml.kernel.org/r/20200116200210.18937-2-kan.liang@linux.intel.com
2020-01-17perf/x86/intel/uncore: Fix missing marker for snr_uncore_imc_freerunning_eventsKan Liang
An Oops during the boot is found on some SNR machines. It turns out this is because the snr_uncore_imc_freerunning_events[] array was missing an end-marker. Fixes: ee49532b38dd ("perf/x86/intel/uncore: Add IMC uncore support for Snow Ridge") Reported-by: Like Xu <like.xu@linux.intel.com> Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Tested-by: Like Xu <like.xu@linux.intel.com> Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/20200116200210.18937-1-kan.liang@linux.intel.com
2020-01-17perf/x86/intel/uncore: Add PCI ID of IMC for Xeon E3 V5 FamilyKan Liang
The IMC uncore support is missed for E3-1585 v5 CPU. Intel Xeon E3 V5 Family has Sky Lake CPU. Add the PCI ID of IMC for Intel Xeon E3 V5 Family. Reported-by: Rosales-fernandez, Carlos <carlos.rosales-fernandez@intel.com> Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Tested-by: Rosales-fernandez, Carlos <carlos.rosales-fernandez@intel.com> Link: https://lkml.kernel.org/r/1578687311-158748-1-git-send-email-kan.liang@linux.intel.com
2020-01-17perf: Correctly handle failed perf_get_aux_event()Mark Rutland
Vince reports a worrying issue: | so I was tracking down some odd behavior in the perf_fuzzer which turns | out to be because perf_even_open() sometimes returns 0 (indicating a file | descriptor of 0) even though as far as I can tell stdin is still open. ... and further the cause: | error is triggered if aux_sample_size has non-zero value. | | seems to be this line in kernel/events/core.c: | | if (perf_need_aux_event(event) && !perf_get_aux_event(event, group_leader)) | goto err_locked; | | (note, err is never set) This seems to be a thinko in commit: ab43762ef010967e ("perf: Allow normal events to output AUX data") ... and we should probably return -EINVAL here, as this should only happen when the new event is mis-configured or does not have a compatible aux_event group leader. Fixes: ab43762ef010967e ("perf: Allow normal events to output AUX data") Reported-by: Vince Weaver <vincent.weaver@maine.edu> Signed-off-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Acked-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Tested-by: Vince Weaver <vincent.weaver@maine.edu>
2020-01-17net: hns: fix soft lockup when there is not enough memoryYonglong Liu
When there is not enough memory and napi_alloc_skb() return NULL, the HNS driver will print error message, and than try again, if the memory is not enough for a while, huge error message and the retry operation will cause soft lockup. When napi_alloc_skb() return NULL because of no memory, we can get a warn_alloc() call trace, so this patch deletes the error message. We already use polling mode to handle irq, but the retry operation will render the polling weight inactive, this patch just return budget when the rx is not completed to avoid dead loop. Fixes: 36eedfde1a36 ("net: hns: Optimize hns_nic_common_poll for better performance") Fixes: b5996f11ea54 ("net: add Hisilicon Network Subsystem basic ethernet support") Signed-off-by: Yonglong Liu <liuyonglong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-17USB: serial: suppress driver bind attributesJohan Hovold
USB-serial drivers must not be unbound from their ports before the corresponding USB driver is unbound from the parent interface so suppress the bind and unbind attributes. Unbinding a serial driver while it's port is open is a sure way to trigger a crash as any driver state is released on unbind while port hangup is handled on the parent USB interface level. Drivers for multiport devices where ports share a resource such as an interrupt endpoint also generally cannot handle individual ports going away. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Cc: stable <stable@vger.kernel.org> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2020-01-17net: avoid updating qdisc_xmit_lock_key in netdev_update_lockdep_key()Cong Wang
syzbot reported some bogus lockdep warnings, for example bad unlock balance in sch_direct_xmit(). They are due to a race condition between slow path and fast path, that is qdisc_xmit_lock_key gets re-registered in netdev_update_lockdep_key() on slow path, while we could still acquire the queue->_xmit_lock on fast path in this small window: CPU A CPU B __netif_tx_lock(); lockdep_unregister_key(qdisc_xmit_lock_key); __netif_tx_unlock(); lockdep_register_key(qdisc_xmit_lock_key); In fact, unlike the addr_list_lock which has to be reordered when the master/slave device relationship changes, queue->_xmit_lock is only acquired on fast path and only when NETIF_F_LLTX is not set, so there is likely no nested locking for it. Therefore, we can just get rid of re-registration of qdisc_xmit_lock_key. Reported-by: syzbot+4ec99438ed7450da6272@syzkaller.appspotmail.com Fixes: ab92d68fc22f ("net: core: add generic lockdep keys") Cc: Taehee Yoo <ap420073@gmail.com> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Acked-by: Taehee Yoo <ap420073@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-17net/sched: act_ife: initalize ife->metalist earlierEric Dumazet
It seems better to init ife->metalist earlier in tcf_ife_init() to avoid the following crash : kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 10483 Comm: syz-executor216 Not tainted 5.5.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:_tcf_ife_cleanup net/sched/act_ife.c:412 [inline] RIP: 0010:tcf_ife_cleanup+0x6e/0x400 net/sched/act_ife.c:431 Code: 48 c1 ea 03 80 3c 02 00 0f 85 94 03 00 00 49 8b bd f8 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8d 67 e8 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 5c 03 00 00 48 bb 00 00 00 00 00 fc ff df 48 8b RSP: 0018:ffffc90001dc6d00 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffffffff864619c0 RCX: ffffffff815bfa09 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000000 RBP: ffffc90001dc6d50 R08: 0000000000000004 R09: fffff520003b8d8e R10: fffff520003b8d8d R11: 0000000000000003 R12: ffffffffffffffe8 R13: ffff8880a79fc000 R14: ffff88809aba0e00 R15: 0000000000000000 FS: 0000000001b51880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000563f52cce140 CR3: 0000000093541000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: tcf_action_cleanup+0x62/0x1b0 net/sched/act_api.c:119 __tcf_action_put+0xfa/0x130 net/sched/act_api.c:135 __tcf_idr_release net/sched/act_api.c:165 [inline] __tcf_idr_release+0x59/0xf0 net/sched/act_api.c:145 tcf_idr_release include/net/act_api.h:171 [inline] tcf_ife_init+0x97c/0x1870 net/sched/act_ife.c:616 tcf_action_init_1+0x6b6/0xa40 net/sched/act_api.c:944 tcf_action_init+0x21a/0x330 net/sched/act_api.c:1000 tcf_action_add+0xf5/0x3b0 net/sched/act_api.c:1410 tc_ctl_action+0x390/0x488 net/sched/act_api.c:1465 rtnetlink_rcv_msg+0x45e/0xaf0 net/core/rtnetlink.c:5424 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2477 rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:5442 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x58c/0x7d0 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x91c/0xea0 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:639 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:659 ____sys_sendmsg+0x753/0x880 net/socket.c:2330 ___sys_sendmsg+0x100/0x170 net/socket.c:2384 __sys_sendmsg+0x105/0x1d0 net/socket.c:2417 __do_sys_sendmsg net/socket.c:2426 [inline] __se_sys_sendmsg net/socket.c:2424 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2424 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe Fixes: 11a94d7fd80f ("net/sched: act_ife: validate the control action inside init()") Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: syzbot <syzkaller@googlegroups.com> Cc: Davide Caratti <dcaratti@redhat.com> Reviewed-by: Davide Caratti <dcaratti@redhat.com> Acked-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-17Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nfDavid S. Miller
Pablo Neira Ayuso says: ==================== Netfilter updates for net The following patchset contains Netfilter fixes for net: 1) Fix use-after-free in ipset bitmap destroy path, from Cong Wang. 2) Missing init netns in entry cleanup path of arp_tables, from Florian Westphal. 3) Fix WARN_ON in set destroy path due to missing cleanup on transaction error. 4) Incorrect netlink sanity check in tunnel, from Florian Westphal. 5) Missing sanity check for erspan version netlink attribute, also from Florian. 6) Remove WARN in nft_request_module() that can be triggered from userspace, from Florian Westphal. 7) Memleak in NFTA_HOOK_DEVS netlink parser, from Dan Carpenter. 8) List poison from commit path for flowtables that are added and deleted in the same batch, from Florian Westphal. 9) Fix NAT ICMP packet corruption, from Eyal Birger. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-17locking/rwsem: Fix kernel crash when spinning on RWSEM_OWNER_UNKNOWNWaiman Long
The commit 91d2a812dfb9 ("locking/rwsem: Make handoff writer optimistically spin on owner") will allow a recently woken up waiting writer to spin on the owner. Unfortunately, if the owner happens to be RWSEM_OWNER_UNKNOWN, the code will incorrectly spin on it leading to a kernel crash. This is fixed by passing the proper non-spinnable bits to rwsem_spin_on_owner() so that RWSEM_OWNER_UNKNOWN will be treated as a non-spinnable target. Fixes: 91d2a812dfb9 ("locking/rwsem: Make handoff writer optimistically spin on owner") Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Waiman Long <longman@redhat.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Tested-by: Christoph Hellwig <hch@lst.de> Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/20200115154336.8679-1-longman@redhat.com
2020-01-16io_uring: only allow submit from owning taskJens Axboe
If the credentials or the mm doesn't match, don't allow the task to submit anything on behalf of this ring. The task that owns the ring can pass the file descriptor to another task, but we don't want to allow that task to submit an SQE that then assumes the ring mm and creds if it needs to go async. Cc: stable@vger.kernel.org Suggested-by: Stefan Metzmacher <metze@samba.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-01-16Merge tag 'armsoc-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc Pull ARM SoC fixes from Olof Johansson: "I've been sitting on these longer than I meant, so the patch count is a bit higher than ideal for this part of the release. There's also some reverts of double-applied patches that brings the diffstat up a bit. With that said, the biggest changes are: - Revert of duplicate i2c device addition on two Aspeed (BMC) Devicetrees. - Move of two device nodes that got applied to the wrong part of the tree on ASpeed G6. - Regulator fix for Beaglebone X15 (adding 12/5V supplies) - Use interrupts for keys on Amlogic SM1 to avoid missed polls In addition to that, there is a collection of smaller DT fixes: - Power supply assignment fixes for i.MX6 - Fix of interrupt line for magnetometer on i.MX8 Librem5 devkit - Build fixlets (selects) for davinci/omap2+ - More interrupt number fixes for Stratix10, Amlogic SM1, etc. - ... and more similar fixes across different platforms And some non-DT stuff: - optee fix to register multiple shared pages properly - Clock calculation fixes for MMP3 - Clock fixes for OMAP as well" * tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (42 commits) MAINTAINERS: Add myself as the co-maintainer for Actions Semi platforms ARM: dts: imx7: Fix Toradex Colibri iMX7S 256MB NAND flash support ARM: dts: imx6sll-evk: Remove incorrect power supply assignment ARM: dts: imx6sl-evk: Remove incorrect power supply assignment ARM: dts: imx6sx-sdb: Remove incorrect power supply assignment ARM: dts: imx6qdl-sabresd: Remove incorrect power supply assignment ARM: dts: imx6q-icore-mipi: Use 1.5 version of i.Core MX6DL ARM: omap2plus: select RESET_CONTROLLER ARM: davinci: select CONFIG_RESET_CONTROLLER ARM: dts: aspeed: rainier: Fix fan fault and presence ARM: dts: aspeed: rainier: Remove duplicate i2c busses ARM: dts: aspeed: tacoma: Remove duplicate flash nodes ARM: dts: aspeed: tacoma: Remove duplicate i2c busses ARM: dts: aspeed: tacoma: Fix fsi master node ARM: dts: aspeed-g6: Fix FSI master location ARM: dts: mmp3: Fix the TWSI ranges clk: mmp2: Fix the order of timer mux parents ARM: mmp: do not divide the clock rate arm64: dts: rockchip: Fix IR on Beelink A1 optee: Fix multi page dynamic shm pool alloc ...
2020-01-16Merge tag 'clk-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux Pull clk fixes from Stephen Boyd: "Second collection of clk fixes for the next release. This one includes a fix for PM on TI SoCs with sysc devices and fixes a bunch of clks that are stuck always enabled on Qualcomm SDM845 SoCs. Allwinner SoCs get the usual set of fixes too, mostly correcting drivers to have the right bits that match the hardware. There's also a Samsung and Tegra fix in here to mark a clk critical and avoid a double free. And finally there's a fix for critical clks that silences a big warning splat about trying to enable a clk that couldn't even be prepared" * tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: clk: ti: dra7-atl: Remove pm_runtime_irq_safe() clk: qcom: gcc-sdm845: Add missing flag to votable GDSCs clk: sunxi-ng: h6-r: Fix AR100/R_APB2 parent order clk: sunxi-ng: h6-r: Simplify R_APB1 clock definition clk: sunxi-ng: sun8i-r: Fix divider on APB0 clock clk: Don't try to enable critical clocks if prepare failed clk: tegra: Fix double-free in tegra_clk_init() clk: samsung: exynos5420: Keep top G3D clocks enabled clk: sunxi-ng: r40: Allow setting parent rate for external clock outputs clk: sunxi-ng: v3s: Fix incorrect number of hw_clks.
2020-01-16Merge tag 'pm-5.5-rc7' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull power management fix from Rafael Wysocki: "Fix a coding mistake in the teo cpuidle governor causing data to be written beyond the last array element (Ikjoon Jang)" * tag 'pm-5.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: cpuidle: teo: Fix intervals[] array indexing bug
2020-01-16MAINTAINERS: Add myself as the co-maintainer for Actions Semi platformsManivannan Sadhasivam
Since I've been doing the maintainership work for couple of cycles, we've decided to add myself as the co-maintainer along with Andreas. Link: https://lore.kernel.org/r/20200114084348.25659-2-manivannan.sadhasivam@linaro.org Cc: "Andreas Färber" <afaerber@suse.de> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Acked-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Olof Johansson <olof@lixom.net>
2020-01-16staging: wfx: update TODOJérôme Pouiller
Some work has been done :) Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200115135338.14374-66-Jerome.Pouiller@silabs.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-16staging: wfx: simplify hif_multi_tx_confirm()Jérôme Pouiller
Usage of the "buf_loc" variable does not simplify the function. Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200115135338.14374-65-Jerome.Pouiller@silabs.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-16staging: wfx: simplify wfx_tx_queue_get_num_queued()Jérôme Pouiller
wfx_tx_queue_get_num_queued() can take advantage of BIT() instead of maintaining one variable for a counter and another for a mask. In add, wfx_tx_queue_get_num_queued() has no real reason to return a size_t instead of an int. Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200115135338.14374-64-Jerome.Pouiller@silabs.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-16staging: wfx: simplify hif_handle_tx_data()Jérôme Pouiller
Since enum action has now only two cases, it can be dropped. Then hif_handle_tx_data() can be simplified. Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200115135338.14374-63-Jerome.Pouiller@silabs.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-16staging: wfx: remove check for interface stateJérôme Pouiller
Obviously, the value of wvif->state as no reason to be wrong. At least, if it the case, dropping the frame is probably not the bast thing to do. Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200115135338.14374-62-Jerome.Pouiller@silabs.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-16staging: wfx: remove unused do_probeJérôme Pouiller
The identifier do_probe is unused since "staging: wfx: remove workaround to send probe requests" Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200115135338.14374-61-Jerome.Pouiller@silabs.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-16staging: wfx: ensure that packet_id is uniqueJérôme Pouiller
In current code, packet_id is derivated from mac802.11 packet sequence number, but this number is only unique for a station. It is not sufficient. Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200115135338.14374-60-Jerome.Pouiller@silabs.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-16staging: wfx: simplify wfx_ps_notify_sta()Jérôme Pouiller
wfx_ps_notify_sta() is too complex compared to the task it do. Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200115135338.14374-59-Jerome.Pouiller@silabs.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-16staging: wfx: simplify handling of IEEE80211_TX_CTL_SEND_AFTER_DTIMJérôme Pouiller
When mac80211 ask for a frame to be sent after a DTIM, driver should: 1. Update TIM with multicast bit set (using update_ie). This function can be called whenever. 2. Keep buffered all frames marked "after dtim" 3. When it receive a suspend_resume indication (see wfx_suspend_resume_mc()), send all the buffered frames. This indication is sent by the firmware 4ms before the dtim. 4. If one of the frames returns status "REQUEUE", it means that the DTIM period was ended before to be able to send the frame. 5. When all the buffered frames were sent or if DTIM period was ended, driver should update the TIM with multicast bit reset. All the mess with the asynchronous works can be dropped. Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200115135338.14374-58-Jerome.Pouiller@silabs.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-16staging: wfx: simplify wfx_suspend_resume_mc()Jérôme Pouiller
Indeed, it is not necessary to pass whole hif_ind_suspend_resume_tx to wfx_suspend_resume_mc(). In add, the structure hif_ind_suspend_resume_tx come from hardware API. It is not intended to be manipulated in upper layers of the driver. Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200115135338.14374-57-Jerome.Pouiller@silabs.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-16staging: wfx: firmware never return PS status for stationsJérôme Pouiller
At the beginning, firmware could send suspend_resume indication to notify that a station wake up or sleep down. However, mac80211 already handles power save status of stations and this behavior has been removed from the firmware. So now, when suspend_resume indication is received, it is always to notify that a DTIM is about to be sent. So, it is possible to simply wfx_suspend_resume(). Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200115135338.14374-56-Jerome.Pouiller@silabs.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-16staging: wfx: sta and dtimJérôme Pouiller
wfx_ps_notify() is called for any changes in the TIM. However, association ID 0 is a very special case that should be handled independently. Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200115135338.14374-55-Jerome.Pouiller@silabs.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-16staging: wfx: pspoll_mask make no senseJérôme Pouiller
pspoll_mask is here to send data buffered in driver. But since station is marked buffered, TIM for this station is 1 and mac80211 will call sta_notify when a ps-poll is received. So pspoll_mask is useless and sta_alseep_mask is sufficient. Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200115135338.14374-54-Jerome.Pouiller@silabs.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-16staging: wfx: replace wfx_tx_get_tid() with ieee80211_get_tid()Jérôme Pouiller
wfx_tx_get_tid() was used as a wrapper around ieee80211_get_tid(). It did sometime return WFX_MAX_TID to ask to upper layers to not include the frame in "buffered" counter. The objective of this behavior is not clear, but tests has shown that wfx_tx_get_tid() can be replaced by ieee80211_get_tid() without any regressions. BTW, it is not necessary to save the tid in tx_rpiv since it can be retrieved from the 802.11 header. Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200115135338.14374-53-Jerome.Pouiller@silabs.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-16staging: wfx: check that no tx is pending before release staJérôme Pouiller
Just for sanity. Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200115135338.14374-52-Jerome.Pouiller@silabs.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-16staging: wfx: simplify the link-id allocationJérôme Pouiller
The "link-id" is a slot number provided to the chip. A link-id is allocated to every station associated with the chip (mainly when the chip is in AP mode). It is more or less the same thing than the association ID, but it is limited to 14 values. Firmware uses the link-id to track the power save status of the stations. The current code try to associate a link-id as soon as data are exchanged with station. It is far easier to rely on sta_add() and sta_remove(). Until now the value WFX_LINK_ID_NO_ASSOC, was only used when no more link-id was available. Now, we also use this value for not-yet-associated stations (that was its primary behavior). Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200115135338.14374-51-Jerome.Pouiller@silabs.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-16staging: wfx: simplify wfx_set_tim_impl()Jérôme Pouiller
Argument provided to wfx_set_tim_impl() is always wvif->aid0_bit_set and there is no reason to provide another argument. Also rename wfx_set_tim_impl() into wfx_update_tim() to reflect the new behavior. Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200115135338.14374-50-Jerome.Pouiller@silabs.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-16staging: wfx: fix RCU usageJérôme Pouiller
Indeed, sta was used after call to rcu_unlock() Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200115135338.14374-49-Jerome.Pouiller@silabs.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-16staging: wfx: fix bss_lossJérôme Pouiller
wfx_tx_confirm_cb() retrieves the station associated with a frame using the MAC address from the 802.11 header. In the other side wfx_tx() retrieves the station using sta field from the ieee80211_tx_control argument. In wfx_cqm_bssloss_sm(), wfx_tx() was called directly without valid sta field, but with a valid MAC address in 802.11 header. So there the processing of this packet was unbalanced and may produce weird bugs. Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200115135338.14374-48-Jerome.Pouiller@silabs.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-16staging: wfx: relocate "buffered" information to sta_privJérôme Pouiller
It simplify the code if field buffered is hosted in the struct sta_priv instead of in the struct wfx_link_entry. More globally, struct wfx_link_entry has no real reasons to exist and should be dropped soon. Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200115135338.14374-47-Jerome.Pouiller@silabs.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-16staging: wfx: remove handling of "early_data"Jérôme Pouiller
It seems that purpose of "early_data" was to prevent sending data to mac80211 before station was completely associated. It is a useless precaution. Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200115135338.14374-46-Jerome.Pouiller@silabs.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-16staging: wfx: fix possible overflow on jiffies comparaisonJérôme Pouiller
MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit It is recommended to use function time_*() to compare jiffies. Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200115135338.14374-45-Jerome.Pouiller@silabs.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-16staging: wfx: fix case where RTS threshold is 0Jérôme Pouiller
If RTS threshold is 0, it currently disables RTS. It should mean "enabled for every frames". Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200115135338.14374-44-Jerome.Pouiller@silabs.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-16staging: wfx: do not update uapsd if not necessaryJérôme Pouiller
wfx_conf_tx() is called for each queue. On every call, the function updates UAPSD mask and PM mode for all queues. It is a pity since the UAPSD configuration very rarely changes and it makes exchanges between the host and the chip more difficult to track. This patch avoid to update UAPSD and Power Mode in most usual cases. Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200115135338.14374-43-Jerome.Pouiller@silabs.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-16staging: wfx: with multiple vifs, force PS only if channels differsJérôme Pouiller
When multiple vif are in use (the only supported configuration is one station and one AP), the driver force power save flag on station. This behavior allows the station to leave the station channel and make its business on AP channel. However, this has a big impact on station performances (especially since only legacy PS is supported). When both vifs use the same channel, it is not necessary to keep this restriction. This greatly improve station performances. Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200115135338.14374-42-Jerome.Pouiller@silabs.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-16staging: wfx: update power-save per interfaceJérôme Pouiller
mac80211 and the device are both able to control power-save per vif. But, the current code retrieve power-save from wfx_config(). So, it does not allow to setup power-save independently for each vif. Driver just has to rely on wfx_bss_info_changed() instead of wfx_config(). wfx_config() has nothing to do anymore, but we keep it since it is mandatory for mac80211. Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200115135338.14374-41-Jerome.Pouiller@silabs.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-16staging: wfx: simplify wfx_scan_complete()Jérôme Pouiller
wfx_scan_complete() do nothing with argument hif_ind_scan_cmpl. In add, hif_ind_scan_cmpl come from hardware API and is not expected to be used with upper layers of the driver. Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200115135338.14374-40-Jerome.Pouiller@silabs.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-16staging: wfx: simplify wfx_update_filtering()Jérôme Pouiller
wfx_update_filtering() has no reason to instantiate a struct hif_mib_bcn_filter_enable. Drop it and simplify the code. Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200115135338.14374-39-Jerome.Pouiller@silabs.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-16staging: wfx: simplify wfx_set_mcast_filter()Jérôme Pouiller
HIF functions return only serious errors (OOM or device freeze). The current handling of errors in wfx_set_mcast_filter() does not bring anything. Finally it may disturb the developer more than it helps. Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200115135338.14374-38-Jerome.Pouiller@silabs.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-16staging: wfx: simplify hif_set_config_data_filter()Jérôme Pouiller
The structure hif_mib_config_data_filter come from hardware API. It is not intended to be manipulated in upper layers of the driver. In add, current code for hif_set_config_data_filter() is too dumb. It should pack data with hardware representation instead of leaving all work to the caller. Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200115135338.14374-37-Jerome.Pouiller@silabs.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-16staging: wfx: simplify hif_set_mac_addr_condition()Jérôme Pouiller
The structure hif_mib_mac_addr_data_frame_condition come from hardware API. It is not intended to be manipulated in upper layers of the driver. In add, current code for hif_set_mac_addr_condition() is too dumb. It should pack data with hardware representation instead of leaving all work to the caller. Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200115135338.14374-36-Jerome.Pouiller@silabs.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-16staging: wfx: simplify hif_set_data_filtering()Jérôme Pouiller
The structure hif_mib_set_data_filtering come from hardware API. It is not intended to be manipulated in upper layers of the driver. In add, current code for hif_set_data_filtering() is too dumb. It should pack data with hardware representation instead of leaving all work to the caller. Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200115135338.14374-35-Jerome.Pouiller@silabs.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-16staging: wfx: simplify hif_mib_set_data_filteringJérôme Pouiller
The field "default_filter" was not obvious. In add, explicitly declare that fields default_filter and enable are booleans. Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200115135338.14374-34-Jerome.Pouiller@silabs.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-16staging: wfx: simplify hif_mib_uc_mc_bc_data_frame_conditionJérôme Pouiller
The current API defines bitfields. It is not very convenient. Prefer to use bitmasks. Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200115135338.14374-33-Jerome.Pouiller@silabs.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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