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path: root/drivers/net/wireless/ath/ath9k/main.c
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2017-10-27ath: Convert timers to use timer_setup()Kees Cook1-2/+2
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Cc: Kalle Valo <kvalo@qca.qualcomm.com> Cc: linux-wireless@vger.kernel.org Cc: netdev@vger.kernel.org Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2017-09-25ath9k: Avoid a potential deadlockVille Syrjälä1-7/+9
Lockdep warns us that sc_pm_lock and cc_lock can cause a deadlock when cc_lock is acquired by itself with interrupts enabled. Disable irqs whenever taking cc_lock to avoid this. [ 19.094524] kworker/u2:0/5 just changed the state of lock: [ 19.094578] (&(&sc->sc_pm_lock)->rlock){-.-...}, at: [<f836c00e>] ath_isr+0x15e/0x200 [ath9k] [ 19.094674] but this lock took another, HARDIRQ-unsafe lock in the past: [ 19.094731] (&(&common->cc_lock)->rlock){+.-...} [ 19.094741] and interrupts could create inverse lock ordering between them. [ 19.094866] other info that might help us debug this: [ 19.094926] Possible interrupt unsafe locking scenario: [ 19.094985] CPU0 CPU1 [ 19.095036] ---- ---- [ 19.095086] lock(&(&common->cc_lock)->rlock); [ 19.095197] local_irq_disable(); [ 19.095305] lock(&(&sc->sc_pm_lock)->rlock); [ 19.095423] lock(&(&common->cc_lock)->rlock); [ 19.095539] <Interrupt> [ 19.095636] lock(&(&sc->sc_pm_lock)->rlock); [ 19.095745] *** DEADLOCK *** [ 19.095965] 3 locks held by kworker/u2:0/5: [ 19.096067] #0: ("%s"wiphy_name(local->hw.wiphy)){.+.+.+}, at: [<c1067f37>] process_one_work+0x127/0x580 [ 19.096260] #1: ((&local->dynamic_ps_enable_work)){+.+...}, at: [<c1067f37>] process_one_work+0x127/0x580 [ 19.096447] #2: (&sc->mutex){+.+...}, at: [<f836b8b0>] ath9k_config+0x30/0x1d0 [ath9k] [ 19.096639] the shortest dependencies between 2nd lock and 1st lock: [ 19.096813] -> (&(&common->cc_lock)->rlock){+.-...} ops: 38 { [ 19.096816] HARDIRQ-ON-W at: [ 19.096816] __lock_acquire+0x57e/0x1260 [ 19.096816] lock_acquire+0xb1/0x1c0 [ 19.096816] _raw_spin_lock_bh+0x3f/0x50 [ 19.096816] ath_chanctx_set_channel+0xb6/0x2c0 [ath9k] [ 19.096816] ath9k_config+0xa8/0x1d0 [ath9k] [ 19.096816] ieee80211_hw_config+0xa8/0x5f0 [mac80211] [ 19.096816] ieee80211_do_open+0x67a/0x920 [mac80211] [ 19.096816] ieee80211_open+0x41/0x50 [mac80211] [ 19.096816] __dev_open+0xab/0x140 [ 19.096816] __dev_change_flags+0x89/0x150 [ 19.096816] dev_change_flags+0x28/0x60 [ 19.096816] do_setlink+0x290/0x890 [ 19.096816] rtnl_newlink+0x7cf/0x8e0 [ 19.096816] rtnetlink_rcv_msg+0xbf/0x1f0 [ 19.096816] netlink_rcv_skb+0xb9/0xe0 [ 19.096816] rtnetlink_rcv+0x1e/0x30 [ 19.096816] netlink_unicast+0x13a/0x2c0 [ 19.096816] netlink_sendmsg+0x290/0x380 [ 19.096816] ___sys_sendmsg+0x1e2/0x280 [ 19.096816] __sys_sendmsg+0x3f/0x80 [ 19.096816] SyS_socketcall+0x58c/0x6b0 [ 19.096816] do_fast_syscall_32+0x96/0x1d0 [ 19.096816] entry_SYSENTER_32+0x4c/0x7b [ 19.096816] IN-SOFTIRQ-W at: [ 19.096816] __lock_acquire+0x55a/0x1260 [ 19.096816] lock_acquire+0xb1/0x1c0 [ 19.096816] _raw_spin_lock+0x3c/0x50 [ 19.096816] ath_ps_full_sleep+0x24/0x70 [ath9k] [ 19.096816] call_timer_fn+0xa4/0x300 [ 19.096816] run_timer_softirq+0x1b1/0x560 [ 19.096816] __do_softirq+0xb0/0x430 [ 19.096816] do_softirq_own_stack+0x33/0x40 [ 19.096816] irq_exit+0xad/0xc0 [ 19.096816] smp_apic_timer_interrupt+0x31/0x40 [ 19.096816] apic_timer_interrupt+0x37/0x3c [ 19.096816] wp_page_copy+0xb8/0x580 [ 19.096816] do_wp_page+0x64/0x420 [ 19.096816] handle_mm_fault+0x430/0x990 [ 19.096816] __do_page_fault+0x18b/0x430 [ 19.096816] do_page_fault+0xb/0x10 [ 19.096816] common_exception+0x62/0x6a [ 19.096816] INITIAL USE at: [ 19.096816] __lock_acquire+0x204/0x1260 [ 19.096816] lock_acquire+0xb1/0x1c0 [ 19.096816] _raw_spin_lock_bh+0x3f/0x50 [ 19.096816] ath_chanctx_set_channel+0xb6/0x2c0 [ath9k] [ 19.096816] ath9k_config+0xa8/0x1d0 [ath9k] [ 19.096816] ieee80211_hw_config+0xa8/0x5f0 [mac80211] [ 19.096816] ieee80211_do_open+0x67a/0x920 [mac80211] [ 19.096816] ieee80211_open+0x41/0x50 [mac80211] [ 19.096816] __dev_open+0xab/0x140 [ 19.096816] __dev_change_flags+0x89/0x150 [ 19.096816] dev_change_flags+0x28/0x60 [ 19.096816] do_setlink+0x290/0x890 [ 19.096816] rtnl_newlink+0x7cf/0x8e0 [ 19.096816] rtnetlink_rcv_msg+0xbf/0x1f0 [ 19.096816] netlink_rcv_skb+0xb9/0xe0 [ 19.096816] rtnetlink_rcv+0x1e/0x30 [ 19.096816] netlink_unicast+0x13a/0x2c0 [ 19.096816] netlink_sendmsg+0x290/0x380 [ 19.096816] ___sys_sendmsg+0x1e2/0x280 [ 19.096816] __sys_sendmsg+0x3f/0x80 [ 19.096816] SyS_socketcall+0x58c/0x6b0 [ 19.096816] do_fast_syscall_32+0x96/0x1d0 [ 19.096816] entry_SYSENTER_32+0x4c/0x7b [ 19.096816] } [ 19.096816] ... key at: [<f837b694>] __key.61991+0x0/0xffffc96c [ath9k] [ 19.096816] ... acquired at: [ 19.096816] lock_acquire+0xb1/0x1c0 [ 19.096816] _raw_spin_lock+0x3c/0x50 [ 19.096816] ath9k_ps_wakeup+0x85/0xe0 [ath9k] [ 19.096816] ath9k_bss_info_changed+0x2a/0x1b0 [ath9k] [ 19.096816] ieee80211_bss_info_change_notify+0xf3/0x360 [mac80211] [ 19.096816] ieee80211_recalc_txpower+0x33/0x40 [mac80211] [ 19.096816] ieee80211_set_tx_power+0x45/0x1d0 [mac80211] [ 19.096816] cfg80211_wext_siwtxpower+0xd3/0x350 [cfg80211] [ 19.096816] ioctl_standard_call+0x4e/0x400 [ 19.096816] wext_handle_ioctl+0xf4/0x190 [ 19.096816] dev_ioctl+0xb7/0x630 [ 19.096816] sock_ioctl+0x13e/0x2d0 [ 19.096816] do_vfs_ioctl+0x84/0x750 [ 19.096816] SyS_ioctl+0x34/0x60 [ 19.096816] do_fast_syscall_32+0x96/0x1d0 [ 19.096816] entry_SYSENTER_32+0x4c/0x7b [ 19.096816] -> (&(&sc->sc_pm_lock)->rlock){-.-...} ops: 597 { [ 19.096816] IN-HARDIRQ-W at: [ 19.096816] __lock_acquire+0x6ae/0x1260 [ 19.096816] lock_acquire+0xb1/0x1c0 [ 19.096816] _raw_spin_lock_irqsave+0x45/0x60 [ 19.096816] ath_isr+0x15e/0x200 [ath9k] [ 19.096816] __handle_irq_event_percpu+0x44/0x340 [ 19.096816] handle_irq_event_percpu+0x1d/0x50 [ 19.096816] handle_irq_event+0x32/0x60 [ 19.096816] handle_level_irq+0x81/0x100 [ 19.096816] handle_irq+0x9c/0xd0 [ 19.096816] do_IRQ+0x5c/0x120 [ 19.096816] common_interrupt+0x36/0x3c [ 19.096816] _raw_spin_unlock_irqrestore+0x57/0x70 [ 19.096816] ath9k_config+0x16a/0x1d0 [ath9k] [ 19.096816] ieee80211_hw_config+0xa8/0x5f0 [mac80211] [ 19.096816] ieee80211_dynamic_ps_enable_work+0x1c3/0x680 [mac80211] [ 19.096816] process_one_work+0x1d1/0x580 [ 19.096816] worker_thread+0x31/0x380 [ 19.096816] kthread+0xd9/0x110 [ 19.096816] ret_from_fork+0x19/0x24 [ 19.096816] IN-SOFTIRQ-W at: [ 19.096816] __lock_acquire+0x55a/0x1260 [ 19.096816] lock_acquire+0xb1/0x1c0 [ 19.096816] _raw_spin_lock_irqsave+0x45/0x60 [ 19.096816] ath9k_ps_wakeup+0x24/0xe0 [ath9k] [ 19.096816] ath9k_tasklet+0x42/0x260 [ath9k] [ 19.096816] tasklet_action+0x196/0x1e0 [ 19.096816] __do_softirq+0xb0/0x430 [ 19.096816] do_softirq_own_stack+0x33/0x40 [ 19.096816] irq_exit+0xad/0xc0 [ 19.096816] do_IRQ+0x65/0x120 [ 19.096816] common_interrupt+0x36/0x3c [ 19.096816] get_page_from_freelist+0x20a/0x970 [ 19.096816] __alloc_pages_nodemask+0xca/0xed0 [ 19.096816] __get_free_pages+0x14/0x30 [ 19.096816] pgd_alloc+0x1d/0x160 [ 19.096816] mm_init.isra.47+0x13a/0x1b0 [ 19.096816] copy_process.part.54+0xb55/0x1700 [ 19.096816] _do_fork+0xd4/0x6a0 [ 19.096816] SyS_clone+0x27/0x30 [ 19.096816] do_fast_syscall_32+0x96/0x1d0 [ 19.096816] entry_SYSENTER_32+0x4c/0x7b [ 19.096816] INITIAL USE at: [ 19.096816] __lock_acquire+0x204/0x1260 [ 19.096816] lock_acquire+0xb1/0x1c0 [ 19.096816] _raw_spin_lock_irqsave+0x45/0x60 [ 19.096816] ath9k_ps_wakeup+0x24/0xe0 [ath9k] [ 19.096816] ath9k_start+0x29/0x1f0 [ath9k] [ 19.096816] drv_start+0x71/0x270 [mac80211] [ 19.096816] ieee80211_do_open+0x31f/0x920 [mac80211] [ 19.096816] ieee80211_open+0x41/0x50 [mac80211] [ 19.096816] __dev_open+0xab/0x140 [ 19.096816] __dev_change_flags+0x89/0x150 [ 19.096816] dev_change_flags+0x28/0x60 [ 19.096816] do_setlink+0x290/0x890 [ 19.096816] rtnl_newlink+0x7cf/0x8e0 [ 19.096816] rtnetlink_rcv_msg+0xbf/0x1f0 [ 19.096816] netlink_rcv_skb+0xb9/0xe0 [ 19.096816] rtnetlink_rcv+0x1e/0x30 [ 19.096816] netlink_unicast+0x13a/0x2c0 [ 19.096816] netlink_sendmsg+0x290/0x380 [ 19.096816] ___sys_sendmsg+0x1e2/0x280 [ 19.096816] __sys_sendmsg+0x3f/0x80 [ 19.096816] SyS_socketcall+0x58c/0x6b0 [ 19.096816] do_fast_syscall_32+0x96/0x1d0 [ 19.096816] entry_SYSENTER_32+0x4c/0x7b [ 19.096816] } [ 19.096816] ... key at: [<f837b67c>] __key.61994+0x0/0xffffc984 [ath9k] [ 19.096816] ... acquired at: [ 19.096816] check_usage_forwards+0x118/0x120 [ 19.096816] mark_lock+0x2e4/0x590 [ 19.096816] __lock_acquire+0x6ae/0x1260 [ 19.096816] lock_acquire+0xb1/0x1c0 [ 19.096816] _raw_spin_lock_irqsave+0x45/0x60 [ 19.096816] ath_isr+0x15e/0x200 [ath9k] [ 19.096816] __handle_irq_event_percpu+0x44/0x340 [ 19.096816] handle_irq_event_percpu+0x1d/0x50 [ 19.096816] handle_irq_event+0x32/0x60 [ 19.096816] handle_level_irq+0x81/0x100 [ 19.096816] handle_irq+0x9c/0xd0 [ 19.096816] do_IRQ+0x5c/0x120 [ 19.096816] common_interrupt+0x36/0x3c [ 19.096816] _raw_spin_unlock_irqrestore+0x57/0x70 [ 19.096816] ath9k_config+0x16a/0x1d0 [ath9k] [ 19.096816] ieee80211_hw_config+0xa8/0x5f0 [mac80211] [ 19.096816] ieee80211_dynamic_ps_enable_work+0x1c3/0x680 [mac80211] [ 19.096816] process_one_work+0x1d1/0x580 [ 19.096816] worker_thread+0x31/0x380 [ 19.096816] kthread+0xd9/0x110 [ 19.096816] ret_from_fork+0x19/0x24 [ 19.096816] stack backtrace: [ 19.096816] CPU: 0 PID: 5 Comm: kworker/u2:0 Not tainted 4.13.0-mgm-ovl+ #51 [ 19.096816] Hardware name: FUJITSU SIEMENS LIFEBOOK S6120/FJNB16C, BIOS Version 1.26 05/10/2004 [ 19.096816] Workqueue: phy0 ieee80211_dynamic_ps_enable_work [mac80211] [ 19.096816] Call Trace: [ 19.096816] <IRQ> [ 19.096816] dump_stack+0x16/0x19 [ 19.096816] print_irq_inversion_bug.part.37+0x16c/0x179 [ 19.096816] check_usage_forwards+0x118/0x120 [ 19.096816] ? ret_from_fork+0x19/0x24 [ 19.096816] ? print_shortest_lock_dependencies+0x1a0/0x1a0 [ 19.096816] mark_lock+0x2e4/0x590 [ 19.096816] ? print_shortest_lock_dependencies+0x1a0/0x1a0 [ 19.096816] __lock_acquire+0x6ae/0x1260 [ 19.096816] lock_acquire+0xb1/0x1c0 [ 19.096816] ? ath_isr+0x15e/0x200 [ath9k] [ 19.096816] _raw_spin_lock_irqsave+0x45/0x60 [ 19.096816] ? ath_isr+0x15e/0x200 [ath9k] [ 19.096816] ath_isr+0x15e/0x200 [ath9k] [ 19.096816] __handle_irq_event_percpu+0x44/0x340 [ 19.096816] handle_irq_event_percpu+0x1d/0x50 [ 19.096816] handle_irq_event+0x32/0x60 [ 19.096816] ? handle_nested_irq+0x100/0x100 [ 19.096816] handle_level_irq+0x81/0x100 [ 19.096816] handle_irq+0x9c/0xd0 [ 19.096816] </IRQ> [ 19.096816] do_IRQ+0x5c/0x120 [ 19.096816] common_interrupt+0x36/0x3c [ 19.096816] EIP: _raw_spin_unlock_irqrestore+0x57/0x70 [ 19.096816] EFLAGS: 00000286 CPU: 0 [ 19.096816] EAX: f60a3600 EBX: 00000286 ECX: 00000006 EDX: 00000001 [ 19.096816] ESI: f46c9e68 EDI: f46c8620 EBP: f60b5e8c ESP: f60b5e84 [ 19.096816] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 [ 19.096816] ath9k_config+0x16a/0x1d0 [ath9k] [ 19.096816] ieee80211_hw_config+0xa8/0x5f0 [mac80211] [ 19.096816] ? ieee80211_hw_config+0x1db/0x5f0 [mac80211] [ 19.096816] ieee80211_dynamic_ps_enable_work+0x1c3/0x680 [mac80211] [ 19.096816] ? process_one_work+0x127/0x580 [ 19.096816] ? process_one_work+0x127/0x580 [ 19.096816] process_one_work+0x1d1/0x580 [ 19.096816] ? process_one_work+0x127/0x580 [ 19.096816] worker_thread+0x31/0x380 [ 19.096816] kthread+0xd9/0x110 [ 19.096816] ? process_one_work+0x580/0x580 [ 19.096816] ? kthread_create_on_node+0x30/0x30 [ 19.096816] ret_from_fork+0x19/0x24 Cc: QCA ath9k Development <ath9k-devel@qca.qualcomm.com> Cc: Kalle Valo <kvalo@codeaurora.org> Cc: netdev@vger.kernel.org Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2017-09-25ath9k: remove cast to void pointerHimanshu Jha1-1/+1
casting to void pointer from any pointer type and vice-versa is done implicitly and therefore casting is not needed in such a case. Done using Coccinellle. Semantic Patch used : @r@ expression x; void* e; type T; identifier f; @@ ( *((T *)e) | ((T *)x)[...] | ((T *)x)->f | - (T *) e ) Signed-off-by: Himanshu Jha <himanshujha199640@gmail.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2017-06-28ath9k: Use mutex_lock to avoid potential race in start/stop rngMiaoqing Pan1-4/+4
Move ath9k_rng_stop/ath9k_rng_start pair into critical section, use mutex_lock to void potential race accessing. Signed-off-by: Miaoqing Pan <miaoqing@codeaurora.org> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2017-02-07ath9k: fix race condition in enabling/disabling IRQsFelix Fietkau1-16/+11
The code currently relies on refcounting to disable IRQs from within the IRQ handler and re-enabling them again after the tasklet has run. However, due to race conditions sometimes the IRQ handler might be called twice, or the tasklet may not run at all (if interrupted in the middle of a reset). This can cause nasty imbalances in the irq-disable refcount which will get the driver permanently stuck until the entire radio has been stopped and started again (ath_reset will not recover from this). Instead of using this fragile logic, change the code to ensure that running the irq handler during tasklet processing is safe, and leave the refcount untouched. Cc: stable@vger.kernel.org Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2017-02-07ath9k: rename tx_complete_work to hw_check_workFelix Fietkau1-4/+6
Also include common MAC alive check. This should make the hang checks more reliable for modes where beacons are not sent and is used as a starting point for further hang check improvements Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2016-12-15ath9k: Introduce airtime fairness scheduling between stationsToke Høiland-Jørgensen1-3/+3
This reworks the ath9k driver to schedule transmissions to connected stations in a way that enforces airtime fairness between them. It accomplishes this by measuring the time spent transmitting to or receiving from a station at TX and RX completion, and accounting this to a per-station, per-QoS level airtime deficit. Then, an FQ-CoDel based deficit scheduler is employed at packet dequeue time, to control which station gets the next transmission opportunity. Airtime fairness can significantly improve the efficiency of the network when station rates vary. The following throughput values are from a simple three-station test scenario, where two stations operate at the highest HT20 rate, and one station at the lowest, and the scheduler is employed at the access point: Before / After Fast station 1: 19.17 / 25.09 Mbps Fast station 2: 19.83 / 25.21 Mbps Slow station: 2.58 / 1.77 Mbps Total: 41.58 / 52.07 Mbps The benefit of airtime fairness goes up the more stations are present. In a 30-station test with one station artificially limited to 1 Mbps, we have seen aggregate throughput go from 2.14 to 17.76 Mbps. Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2016-11-15ath9k: Switch to using mac80211 intermediate software queues.Toke Høiland-Jørgensen1-3/+6
This switches ath9k over to using the mac80211 intermediate software queueing mechanism for data packets. It removes the queueing inside the driver, except for the retry queue, and instead pulls from mac80211 when a packet is needed. The retry queue is used to store a packet that was pulled but can't be sent immediately. The old code path in ath_tx_start that would queue packets has been removed completely, as has the qlen limit tunables (since there's no longer a queue in the driver to limit). The mac80211 intermediate software queues offer significant latency reductions, and this patch allows ath9k to realise them. The exact gains from this varies with the test scenario, but in an access point scenario we have seen latency reductions ranging from 1/3 to as much as an order of magnitude. We also achieve slightly better aggregation. Median latency (ping) figures with this patch applied at the access point, with two high-rate stations and one low-rate station (HT20 5Ghz), running a Flent rtt_fair_var_up test with one TCP flow and one ping flow going to each station: Fast station Slow station Default pfifo_fast qdisc: 430.4 ms 638.7 ms fq_codel qdisc on iface: 35.5 ms 211.8 ms This patch set: 22.4 ms 38.2 ms Median aggregation sizes over the same test: Default pfifo_fast qdisc: 9.5 pkts 1.9 pkts fq_codel qdisc on iface: 11.2 pkts 1.9 pkts This patch set: 13.9 pkts 1.9 pkts This patch is based on Tim's original patch set, but reworked quite thoroughly. Cc: Tim Shepard <shep@alum.mit.edu> Cc: Felix Fietkau <nbd@nbd.name> Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2016-09-09Merge branch 'ath-current' into ath-nextKalle Valo1-6/+12
Commit 3c97f5de1f28 ("ath10k: implement NAPI support") conflicts with ath-current. To avoid any merge problems merge ath-current to ath-next already now. Conflicts: drivers/net/wireless/ath/ath10k/htt_rx.c
2016-09-07ath9k: bring back direction setting in ath9k_{start_stop}Giedrius Statkevičius1-2/+7
A regression was introduced in commit id 79d4db1214a ("ath9k: cleanup led_pin initial") that broken the WLAN status led on my laptop with AR9287 after suspending and resuming. Steps to reproduce: * Suspend (laptop) * Resume (laptop) * Observe that the WLAN led no longer turns ON/OFF depending on the status and is always red Even though for my case it only needs to be set to OUT in ath9k_start but for consistency bring back the IN direction setting as well. Fixes: 79d4db1214a0 ("ath9k: cleanup led_pin initial") Cc: Miaoqing Pan <miaoqing@codeaurora.org> Cc: Kalle Valo <kvalo@qca.qualcomm.com> Cc: <stable@vger.kernel.org> # 4.7+ Link: https://bugzilla.kernel.org/show_bug.cgi?id=151711 Signed-off-by: Giedrius Statkevičius <giedrius.statkevicius@gmail.com> [kvalo@qca.qualcomm.com: improve commit log] Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2016-08-22ath9k: fix using sta->drv_priv before initializing itFelix Fietkau1-4/+4
A station pointer can be passed to the driver on tx, before it has been marked as associated. Since ath9k_sta_state was initializing the entry too late, it resulted in some spurious crashes. Fixes: df3c6eb34da5 ("ath9k: Use sta_state() callback") Cc: stable@vger.kernel.org Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2016-08-22ath9k: fix client mode beacon configurationFelix Fietkau1-0/+1
For pure station mode, iter_data.primary_beacon_vif was used and passed to ath_beacon_config, but not set to the station vif. This was causing the following warning: [ 100.310919] ------------[ cut here ]------------ [ 100.315683] WARNING: CPU: 0 PID: 7 at compat-wireless-2016-06-20/drivers/net/wireless/ath/ath9k/beacon.c:642 ath9k_calculate_summary_state+0x250/0x60c [ath9k]() [ 100.402028] CPU: 0 PID: 7 Comm: kworker/u2:1 Tainted: G W 4.4.15 #5 [ 100.409676] Workqueue: phy0 ieee80211_ibss_leave [mac80211] [ 100.415351] Stack : 8736e98c 870b4b20 87a25b54 800a6800 8782a080 80400d63 8039b96c 00000007 [ 100.415351] 803c5edc 87875914 80400000 800a47cc 87a25b54 800a6800 803a0fd8 80400000 [ 100.415351] 00000003 87875914 80400000 80094ae0 87a25b54 8787594c 00000000 801ef308 [ 100.415351] 803ffe70 801ef300 87193d58 87b3a400 87b3ad00 70687930 00000000 00000000 [ 100.415351] 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 100.415351] ... [ 100.451703] Call Trace: [ 100.454235] [<800a6800>] vprintk_default+0x24/0x30 [ 100.459110] [<800a47cc>] printk+0x2c/0x38 [ 100.463190] [<800a6800>] vprintk_default+0x24/0x30 [ 100.468072] [<80094ae0>] print_worker_info+0x148/0x174 [ 100.473378] [<801ef308>] serial8250_console_putchar+0x0/0x44 [ 100.479122] [<801ef300>] wait_for_xmitr+0xc4/0xcc [ 100.484014] [<87193d58>] ieee80211_ibss_leave+0xb90/0x1900 [mac80211] [ 100.490590] [<80081604>] warn_slowpath_common+0xa0/0xd0 [ 100.495922] [<801a359c>] dump_stack+0x14/0x28 [ 100.500350] [<80071a00>] show_stack+0x50/0x84 [ 100.504784] [<80081604>] warn_slowpath_common+0xa0/0xd0 [ 100.510106] [<87024c60>] ath9k_calculate_summary_state+0x250/0x60c [ath9k] [ 100.517105] [<800816b8>] warn_slowpath_null+0x18/0x24 [ 100.522256] [<87024c60>] ath9k_calculate_summary_state+0x250/0x60c [ath9k] [ 100.529273] [<87025418>] ath9k_set_txpower+0x148/0x498 [ath9k] [ 100.535302] [<871d2c64>] cleanup_module+0xa74/0xd4c [mac80211] [ 100.541237] [<801ef308>] serial8250_console_putchar+0x0/0x44 [ 100.547042] [<800a5d18>] wake_up_klogd+0x54/0x68 [ 100.551730] [<800a6650>] vprintk_emit+0x404/0x43c [ 100.556623] [<871b9db8>] ieee80211_sta_rx_notify+0x258/0x32c [mac80211] [ 100.563475] [<871ba6a4>] ieee80211_sta_rx_queued_mgmt+0x63c/0x734 [mac80211] [ 100.570693] [<871aa49c>] ieee80211_tx_prepare_skb+0x210/0x230 [mac80211] [ 100.577609] [<800af5d4>] mod_timer+0x15c/0x190 [ 100.582220] [<871ba8b8>] ieee80211_sta_work+0xfc/0xe1c [mac80211] [ 100.588539] [<871940b4>] ieee80211_ibss_leave+0xeec/0x1900 [mac80211] [ 100.595122] [<8009ec84>] dequeue_task_fair+0x44/0x130 [ 100.600281] [<80092a34>] process_one_work+0x1f8/0x334 [ 100.605454] [<80093830>] worker_thread+0x2b4/0x408 [ 100.610317] [<8009357c>] worker_thread+0x0/0x408 [ 100.615019] [<8009357c>] worker_thread+0x0/0x408 [ 100.619705] [<80097b68>] kthread+0xdc/0xe8 [ 100.623886] [<80097a8c>] kthread+0x0/0xe8 [ 100.627961] [<80060878>] ret_from_kernel_thread+0x14/0x1c [ 100.633448] [ 100.634956] ---[ end trace aafbe57e9ae6862f ]--- Fixes: cfda2d8e2314 ("ath9k: Fix beacon configuration for addition/removal of interfaces") Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2016-08-19ath9k: fix misleading indentBob Copeland1-1/+1
Fixes smatch warning: ath9k_vif_iter_set_beacon() warn if statement not indented Signed-off-by: Bob Copeland <me@bobcopeland.com> Reviewed-by: Julian Calaby <julian.calaby@gmail.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2016-08-04tree-wide: replace config_enabled() with IS_ENABLED()Masahiro Yamada1-6/+6
The use of config_enabled() against config options is ambiguous. In practical terms, config_enabled() is equivalent to IS_BUILTIN(), but the author might have used it for the meaning of IS_ENABLED(). Using IS_ENABLED(), IS_BUILTIN(), IS_MODULE() etc. makes the intention clearer. This commit replaces config_enabled() with IS_ENABLED() where possible. This commit is only touching bool config options. I noticed two cases where config_enabled() is used against a tristate option: - config_enabled(CONFIG_HWMON) [ drivers/net/wireless/ath/ath10k/thermal.c ] - config_enabled(CONFIG_BACKLIGHT_CLASS_DEVICE) [ drivers/gpu/drm/gma500/opregion.c ] I did not touch them because they should be converted to IS_BUILTIN() in order to keep the logic, but I was not sure it was the authors' intention. Link: http://lkml.kernel.org/r/1465215656-20569-1-git-send-email-yamada.masahiro@socionext.com Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Kees Cook <keescook@chromium.org> Cc: Stas Sergeev <stsp@list.ru> Cc: Matt Redfearn <matt.redfearn@imgtec.com> Cc: Joshua Kinard <kumba@gentoo.org> Cc: Jiri Slaby <jslaby@suse.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Borislav Petkov <bp@suse.de> Cc: Markos Chandras <markos.chandras@imgtec.com> Cc: "Dmitry V. Levin" <ldv@altlinux.org> Cc: yu-cheng yu <yu-cheng.yu@intel.com> Cc: James Hogan <james.hogan@imgtec.com> Cc: Brian Gerst <brgerst@gmail.com> Cc: Johannes Berg <johannes@sipsolutions.net> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Will Drewry <wad@chromium.org> Cc: Nikolay Martynov <mar.kolya@gmail.com> Cc: Huacai Chen <chenhc@lemote.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com> Cc: Rafal Milecki <zajec5@gmail.com> Cc: James Cowgill <James.Cowgill@imgtec.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Alex Smith <alex.smith@imgtec.com> Cc: Adam Buchbinder <adam.buchbinder@gmail.com> Cc: Qais Yousef <qais.yousef@imgtec.com> Cc: Jiang Liu <jiang.liu@linux.intel.com> Cc: Mikko Rapeli <mikko.rapeli@iki.fi> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: Brian Norris <computersforpeace@gmail.com> Cc: Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com> Cc: "Luis R. Rodriguez" <mcgrof@do-not-panic.com> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Ingo Molnar <mingo@redhat.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Roland McGrath <roland@hack.frob.com> Cc: Paul Burton <paul.burton@imgtec.com> Cc: Kalle Valo <kvalo@qca.qualcomm.com> Cc: Viresh Kumar <viresh.kumar@linaro.org> Cc: Tony Wu <tung7970@gmail.com> Cc: Huaitong Han <huaitong.han@intel.com> Cc: Sumit Semwal <sumit.semwal@linaro.org> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Juergen Gross <jgross@suse.com> Cc: Jason Cooper <jason@lakedaemon.net> Cc: "David S. Miller" <davem@davemloft.net> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Andrea Gelmini <andrea.gelmini@gelma.net> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Rabin Vincent <rabin@rab.in> Cc: "Maciej W. Rozycki" <macro@imgtec.com> Cc: David Daney <david.daney@cavium.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-07-08ath9k: Fix beacon configuration for addition/removal of interfacesBenjamin Berg1-17/+26
This patch fixes some issues with interface reconfiguration. It could for example happen that an AP interface in beacon slot 0 was removed leaving an IBSS station in one of the other slots. When this happens the driver never sends out the beacon as it only tries to send a beacon from slot 0. Appart from that the tracking of required changes to the beacon config is relatively complicated and prone to errors. The approach taken here is to solve reconfiguration issues is to reconfigure the beacons when any interface changes. This means that the complexity of deciding whether an interface change may modify the beacon configuration is gone. It also means that the beacon config will be reliably updated when an interface is removed. The issue that a single non-AP interface might not be in beacon slot 0 and wouldn't be send out is solved by moving it into the first slot. The TSF value in hardware is adjusted accordingly so that the timestamp of the beacons stay consistent. Signed-off-by: Benjamin Berg <benjamin.berg@open-mesh.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2016-07-08ath9k: Remove some #defined constants to decrease verbosityBenjamin Berg1-3/+4
The removed ATH9K_SLOT_TIME_X constants simply map the value in microseconds to the same integer. These constants were not used consistently, so fix the inconsistency issue by replacing all occurances with the integer equivalent. Signed-off-by: Benjamin Berg <benjamin.berg@open-mesh.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2016-07-08ath9k: Expose tsf_adjustment in mac80211 tsf getters and setters.Benjamin Berg1-0/+2
The ath9k driver modifies the TSF for VIFs for the purpose of sending beacons in a staggered fashion. This patch exposes this VIF specific adjustment of the TSF value to mac80211. Without the change the TSF routines handle the hardware TSF value instead of the actual TSF value as seen on the air. Signed-off-by: Benjamin Berg <benjamin.berg@open-mesh.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2016-07-08ath9k: Handle channel context in get_/set_/reset_tsfBenjamin Berg1-3/+18
The ath9k TSF handling routines need to be aware of the channel context that is being modified. With this change the TSF related values that are stored in each channel context will be correctly tracked and the harware will only be updated if the modified context is currently the active one. Without this change the TSF modifications done using these routines would for example be lost during a hardware reset as done by ath_complete_reset. Signed-off-by: Benjamin Berg <benjamin.berg@open-mesh.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2016-04-12cfg80211: remove enum ieee80211_bandJohannes Berg1-2/+2
This enum is already perfectly aliased to enum nl80211_band, and the only reason for it is that we get IEEE80211_NUM_BANDS out of it. There's no really good reason to not declare the number of bands in nl80211 though, so do that and remove the cfg80211 one. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-03-11ath9k: cleanup led_pin initialMiaoqing Pan1-7/+2
Make ath_init_leds() and ath_deinit_leds() pairs as the only API to set leds, also removed direction configuration from ath9k_start() and ath9k_stop(). So the initial is more clear now. Signed-off-by: Miaoqing Pan <miaoqing@codeaurora.org> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2016-03-11ath9k: make GPIO API to support both of WMAC and SOCMiaoqing Pan1-3/+3
commit 61b559dea40e ("ath9k: add extra GPIO led support") added ath9k to support access SOC's GPIOs, but implemented in a separated API: ath9k_hw_request_gpio(). So this patch make the APIs more common, to support both of WMAC and SOC GPIOs. The new APIs as below, void ath9k_hw_gpio_request_in(); void ath9k_hw_gpio_request_out(); void ath9k_hw_gpio_free(); NOTE, the BSP of the SOC chips(AR9340, AR9531, AR9550, AR9561) should set the corresponding MUX registers correctly. Signed-off-by: Miaoqing Pan <miaoqing@codeaurora.org> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2016-03-06Merge 'net-next/master'Kalle Valo1-3/+5
Needed by the upcoming merge of iwlwifi-next-for-kalle-2016-03-02 tag.
2016-01-26ath9k: request NOA update when chanctx activeKalle Valo1-1/+4
Request NOA update when chanctx active, also in case of STA. Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2016-01-14mac80211: pass block ack session timeout to to driverSara Sharon1-3/+5
Currently mac80211 does not inform the driver of the session block ack timeout when starting a rx aggregation session. Drivers that manage the reorder buffer need to know this parameter. Seeing that there are now too many arguments for the drv_ampdu_action() function, wrap them inside a structure. Signed-off-by: Sara Sharon <sara.sharon@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-12-11ath9k: feeding entropy in kernel from ADC captureMiaoqing Pan1-0/+4
This patch is derived from commit 6301566e0b2d ("ath9k: export HW random number generator"), We evaluated the entropy of the ADC data on QCA9531, QCA9561, QCA955x, and AR9340, and it has sufficient quality random data (at least 10 bits and up to 22 bits of min-entropy for a 32-bit value). We conservatively assume the min-entropy is 10 bits out of 32 bits. Thus, ATH9K_RNG_BUF_SIZE is set to 320 (u32) i.e., 1.25 kilobytes of data is inserted to fill up the pool as soon as the entropy counter becomes 896/4096 (set by random.c). Since ADC was not designed to be a dedicated HW RNG, we do not want to bind it to /dev/hwrng framework directly. This patch feeds the entropy directly from the WiFi driver to the input pool. The ADC register output is only used as a seed for the Linux entropy pool. No conditioning is needed, since all the conditioning is performed by the pool itself. Signed-off-by: Miaoqing Pan <miaoqing@codeaurora.org> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2015-10-13Merge tag 'wireless-drivers-next-for-davem-2015-10-09' of ↵David S. Miller1-1/+7
git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next Kalle Valo says: ==================== Major changes: iwlwifi * some debugfs improvements * fix signedness in beacon statistics * deinline some functions to reduce size when device tracing is enabled * filter beacons out in AP mode when no stations are associated * deprecate firmwares version -12 * fix a runtime PM vs. legacy suspend race * one-liner fix for a ToF bug * clean-ups in the rx code * small debugging improvement * fix WoWLAN with new firmware versions * more clean-ups towards multiple RX queues; * some rate scaling fixes and improvements; * some time-of-flight fixes; * other generic improvements and clean-ups; brcmfmac * rework code dealing with multiple interfaces * allow logging firmware console using debug level * support for BCM4350, BCM4365, and BCM4366 PCIE devices * fixed for legacy P2P and P2P device handling * correct set and get tx-power ath9k * add support for Outside Context of a BSS (OCB) mode mwifiex * add USB multichannel feature ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29ath9k: Add support for OCB modeJan Kaisrlik1-1/+7
The patch adds support for "outside the context of a BSS"(OCB) mode to ath9k driver and extends debugfs files by OCB ralated information. This patch was tested on AR9380-AL1A cards. Signed-off-by: Jan Kaisrlik <kaisrja1@fel.cvut.cz> Cc: Michal Sojka <sojkam1@fel.cvut.cz> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-09-22mac80211: allow to transmit A-MSDU within A-MPDUEmmanuel Grumbach1-1/+1
Advertise the capability to send A-MSDU within A-MPDU in the AddBA request sent by mac80211. Let the driver know about the peer's capabilities. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-08-06ath9k: setup rxfilter when offchannelJanusz.Dziedzic@tieto.com1-0/+3
Setup rxfiler correctly for offchannel ctx. This fix problem we didn't configure rxfilter, next didn't receive probe requests and next failed p2p_find. This was seen when ath9k loaded with use_chanctx=1 Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-08-06ath9k: setup rxfilter for all chanctxJanusz.Dziedzic@tieto.com1-1/+3
While mac80211 setup this per HW, set same rxfilter configuration for all chanctx. Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-08-06ath9k: handle RoC cancel correctlyJanusz.Dziedzic@tieto.com1-2/+2
In case we will get ROC cancel from mac80211 we should not call ieee80211_remain_on_channel_expired(). In other case I hit such warning on MIPS and p2p negotiation failed (tested with use_chanctx=1). ath: phy0: Starting RoC period ath: phy0: Channel definition created: 2412 MHz ath: phy0: Assigned next_chan to 2412 MHz ath: phy0: Offchannel duration for chan 2412 MHz : 506632 ath: phy0: ath_chanctx_set_next: current: 2412 MHz, next: 2412 MHz ath: phy0: Stopping current chanctx: 2412 ath: phy0: Flush timeout: 200 ath: phy0: ath_chanctx_set_next: Set channel 2412 MHz ath: phy0: Set channel: 2412 MHz width: 0 ath: phy0: Reset to 2412 MHz, HT40: 0 fastcc: 0 ath: phy0: cur_chan: 2412 MHz, event: ATH_CHANCTX_EVENT_TSF_TIMER, state: ATH_CHANCTX_STATE_IDLE ath: phy0: ath_offchannel_channel_change: offchannel state: ATH_OFFCHANNEL_ROC_START ath: phy0: cur_chan: 2412 MHz, event: ATH_CHANCTX_EVENT_SWITCH, state: ATH_CHANCTX_STATE_IDLE ath: phy0: Cancel RoC ath: phy0: RoC aborted ath: phy0: RoC request on vif: 00:03:7f:4e:a0:cd, type: 1 duration: 500 ath: phy0: Starting RoC period ath: phy0: Channel definition created: 2412 MHz ath: phy0: Assigned next_chan to 2412 MHz ath: phy0: Offchannel duration for chan 2412 MHz : 506705 ath: phy0: ath_chanctx_set_next: current: 2412 MHz, next: 2412 MHz ath: phy0: ath_offchannel_channel_change: offchannel state: ATH_OFFCHANNEL_ROC_START ath: phy0: cur_chan: 2412 MHz, event: ATH_CHANCTX_EVENT_SWITCH, state: ATH_CHANCTX_STATE_IDLE ------------[ cut here ]------------ WARNING: CPU: 0 PID: 3312 at drivers/net/wireless/ath/ath9k/main.c:2319 Modules linked in: ath9k ath9k_common ath9k_hw ath mac80211 cfg80211 Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-06-08ath9k: fix DMA stop sequence for AR9003+Felix Fietkau1-5/+7
AR93xx and newer needs to stop rx before tx to avoid getting the DMA engine or MAC into a stuck state. This should reduce/fix the occurence of "Failed to stop Tx DMA" logspam. Cc: stable@vger.kernel.org Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-04-24mac80211: remove support for IFF_PROMISCJohannes Berg1-2/+1
This support is essentially useless as typically networks are encrypted, frames will be filtered by hardware, and rate scaling will be done with the intended recipient in mind. For real monitoring of the network, the monitor mode support should be used instead. Removing it removes a lot of corner cases. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-03-06Merge tag 'wireless-drivers-next-for-davem-2015-03-06' of ↵David S. Miller1-8/+44
git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next Major changes: brcmfmac: * sdio improvements * add a debugfs file so users can provide us all the revinfo we could ask for iwlwifi: * add triggers for firmware dump collection * remove support for -9.ucode * new statitics API * rate control improvements ath9k: * add per-vif TX power capability * BT coexistance fixes ath10k: * qca6174: enable STA transmit beamforming (TxBF) support * disable multi-vif power save by default bcma: * enable support for PCIe Gen 2 host devices Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-04wireless: Use eth_<foo>_addr instead of memsetJoe Perches1-2/+2
Use the built-in function instead of memset. Miscellanea: Add #include <linux/etherdevice.h> where appropriate Use ETH_ALEN instead of 6 Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-03ath9k: add per-vif TX power capabilityLorenzo Bianconi1-8/+44
Configure the HW with highest TX power among all vif when HW TPC has been enabled in order to add support to per-vif TX power capability. Use lowest configured power among all interfaces when TPC is disabled Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-02-09Merge tag 'wireless-drivers-next-for-davem-2015-02-07' of ↵David S. Miller1-9/+0
git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next Major changes: iwlwifi: * more work for new devices (4165 / 8260) * cleanups / improvemnts in rate control * fixes for TDLS * major statistics work from Johannes - more to come * improvements for the fw error dump infrastructure * usual amount of small fixes here and there (scan, D0i3 etc...) * add support for beamforming * enable stuck queue detection for iwlmvm * a few fixes for EBS scan * fixes for various failure paths * improvements for TDLS Offchannel wil6210: * performance tuning * some AP features brcm80211: * rework some code in SDIO part of the brcmfmac driver related to suspend/resume that were found doing stress testing * in PCIe part scheduling of worker thread needed to be relaxed * minor fixes and exposing firmware revision information to user-space, ie. ethtool. mwifiex: * enhancements for change virtual interface handling * remove coupling between netdev and FW supported interface combination, now conversion from any type of supported interface types to any other type is possible * DFS support in AP mode ath9k: * fix calibration issues on some boards * Wake-on-WLAN improvements ath10k: * add support for qca6174 hardware * enable RX batching to reduce CPU load Conflicts: drivers/net/wireless/rtlwifi/pci.c Conflict resolution is to get rid of the 'end' label and keep the rest. Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-03ath9k: Remove unused BMISS processingSujith Manoharan1-9/+0
The various variables tracking bmiss interrupts are not really used anywhere except in a debug message. Remove them since they have no functional purpose. Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-01-19ath9k: fix race condition in irq processing during hardware resetFelix Fietkau1-4/+3
To fix invalid hardware accesses, the commit 872b5d814f99 ("ath9k: do not access hardware on IRQs during reset") made the irq handler ignore interrupts emitted after queueing a hardware reset (which disables the IRQ). This left a small time window for the IRQ to get re-enabled by the tasklet, which caused IRQ storms. Instead of returning IRQ_NONE when ATH_OP_HW_RESET is set, disable the IRQ entirely for the duration of the reset. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2014-12-08Merge branch 'master' of ↵John W. Linville1-3/+6
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
2014-12-01ath9k: do not access hardware on IRQs during resetFelix Fietkau1-6/+8
Instead of killing interrupts during reset when the first one happens, kill them before issuing the reset. This fixes an easy to reproduce crash with multiple cards sharing the same IRQ. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-12-01ath9k: set ATH_OP_INVALID before disabling hardwareFelix Fietkau1-1/+3
Closes another small IRQ handler race Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-11-21Merge tag 'mac80211-next-for-john-2014-11-20' of ↵John W. Linville1-2/+5
git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next Johannes Berg <johannes@sipsolutions.net> says: "It has been a while since my last pull request, so we accumulated another relatively large set of changes: * TDLS off-channel support set from Arik/Liad, with some support patches I did * custom regulatory fixes from Arik * minstrel VHT fix (and a small optimisation) from Felix * add back radiotap vendor namespace support (myself) * random MAC address scanning for cfg80211/mac80211/hwsim (myself) * CSA improvements (Luca) * WoWLAN Net Detect (wake on network found) support (Luca) * and lots of other smaller changes from many people" Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-11-19Merge commit '4e6ce4dc7ce71d0886908d55129d5d6482a27ff9' of ↵John W. Linville1-0/+3
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
2014-11-19mac80211: allow drivers to support NL80211_SCAN_FLAG_RANDOM_ADDRJohannes Berg1-2/+5
Allow drivers to support NL80211_SCAN_FLAG_RANDOM_ADDR with software based scanning and generate a random MAC address for them for every scan request with the flag. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-17ath9k: Handle failure to send NoASujith Manoharan1-1/+8
If for some reason a beacon with a new NoA is not sent out, then reset the mgd_prepare_tx flag. Not doing this will result in a situation where a GO will send a new NoA when it shouldn't. Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-11-17ath9k: Cancel pending offchannel operationsSujith Manoharan1-13/+30
This patch makes sure that pending roc/scan operations are cancelled properly when a new context is assigned/unassigned. The flush_work() call to flush out any scheduled channel context work is removed, instead, sc->mutex is dropped to allow any pending work to get a chance to complete by the channel scheduler. Also, increase the timeout to allow a switch to an active GO. Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-11-17ath9k: Fix LED configurationSujith Manoharan1-2/+4
On some x86 platforms, the LED gpio is active high instead of active low. Identify such cards and modify the GPIO usage to make sure LED works properly. Cc: Russell Hu <rhu@qca.qualcomm.com> Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-11-17ath9k|ath9k_htc: Seperate the software crypto flag for Tx and RxChun-Yeow Yeoh1-1/+1
Use the sw_mgmt_crypto_tx flag to trigger the CCMP encryption for transmitted management frames to be done in software while the sw_mgmt_crypto_rx flag is used to trigger the CCMP decryption for received management frames to be done in software. Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-11-17ath9k: fix the assignment of hw queues for mesh interfaceChun-Yeow Yeoh1-1/+2
We need to assign the hw queues for mesh interface. Otherwise, we are not able to bring up the mesh interface due to the IEEE80211_INVAL_HW_QUEUE error. Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-22 05:25:57 +0300