wifi: b43: Stop/wake correct queue in DMA Tx path when QoS is disabled

Binary-Eater · sfX-bot · commit 6f511bb69cb1 · 2024-05-15T11:44:05.000Z
[ Upstream commit 9636951e4468f02c72cc75a82dc65d003077edbc ] When QoS is disabled, the queue priority value will not map to the correct ieee80211 queue since there is only one queue. Stop/wake queue 0 when QoS is disabled to prevent trying to stop/wake a non-existent queue and failing to stop/wake the actual queue instantiated. Log of issue before change (with kernel parameter qos=0): [ +5.112651] ------------[ cut here ]------------ [ +0.000005] WARNING: CPU: 7 PID: 25513 at net/mac80211/util.c:449 __ieee80211_wake_queue+0xd5/0x180 [mac80211] [ +0.000067] Modules linked in: b43(O) snd_seq_dummy snd_hrtimer snd_seq snd_seq_device nft_chain_nat xt_MASQUERADE nf_nat xfrm_user xfrm_algo xt_addrtype overlay ccm af_packet amdgpu snd_hda_codec_cirrus snd_hda_codec_generic ledtrig_audio drm_exec amdxcp gpu_sched xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip6t_rpfilter ipt_rpfilter xt_pkttype xt_LOG nf_log_syslog xt_tcpudp nft_compat nf_tables nfnetlink sch_fq_codel btusb uinput iTCO_wdt ctr btrtl intel_pmc_bxt i915 intel_rapl_msr mei_hdcp mei_pxp joydev at24 watchdog btintel atkbd libps2 serio radeon btbcm vivaldi_fmap btmtk intel_rapl_common snd_hda_codec_hdmi bluetooth uvcvideo nls_iso8859_1 applesmc nls_cp437 x86_pkg_temp_thermal snd_hda_intel intel_powerclamp vfat videobuf2_vmalloc coretemp fat snd_intel_dspcfg crc32_pclmul uvc polyval_clmulni snd_intel_sdw_acpi loop videobuf2_memops snd_hda_codec tun drm_suballoc_helper polyval_generic drm_ttm_helper drm_buddy tap ecdh_generic videobuf2_v4l2 gf128mul macvlan ttm ghash_clmulni_intel ecc tg3 [ +0.000044] videodev bridge snd_hda_core rapl crc16 drm_display_helper cec mousedev snd_hwdep evdev intel_cstate bcm5974 hid_appleir videobuf2_common stp mac_hid libphy snd_pcm drm_kms_helper acpi_als mei_me intel_uncore llc mc snd_timer intel_gtt industrialio_triggered_buffer apple_mfi_fastcharge i2c_i801 mei snd lpc_ich agpgart ptp i2c_smbus thunderbolt apple_gmux i2c_algo_bit kfifo_buf video industrialio soundcore pps_core wmi tiny_power_button sbs sbshc button ac cordic bcma mac80211 cfg80211 ssb rfkill libarc4 kvm_intel kvm drm irqbypass fuse backlight firmware_class efi_pstore configfs efivarfs dmi_sysfs ip_tables x_tables autofs4 dm_crypt cbc encrypted_keys trusted asn1_encoder tee tpm rng_core input_leds hid_apple led_class hid_generic usbhid hid sd_mod t10_pi crc64_rocksoft crc64 crc_t10dif crct10dif_generic ahci libahci libata uhci_hcd ehci_pci ehci_hcd crct10dif_pclmul crct10dif_common sha512_ssse3 sha512_generic sha256_ssse3 sha1_ssse3 aesni_intel usbcore scsi_mod libaes crypto_simd cryptd scsi_common [ +0.000055] usb_common rtc_cmos btrfs blake2b_generic libcrc32c crc32c_generic crc32c_intel xor raid6_pq dm_snapshot dm_bufio dm_mod dax [last unloaded: b43(O)] [ +0.000009] CPU: 7 PID: 25513 Comm: irq/17-b43 Tainted: G W O 6.6.7 #1-NixOS [ +0.000003] Hardware name: Apple Inc. MacBookPro8,3/Mac-942459F5819B171B, BIOS 87.0.0.0.0 06/13/2019 [ +0.000001] RIP: 0010:__ieee80211_wake_queue+0xd5/0x180 [mac80211] [ +0.000046] Code: 00 45 85 e4 0f 85 9b 00 00 00 48 8d bd 40 09 00 00 f0 48 0f ba ad 48 09 00 00 00 72 0f 5b 5d 41 5c 41 5d 41 5e e9 cb 6d 3c d0 <0f> 0b 5b 5d 41 5c 41 5d 41 5e c3 cc cc cc cc 48 8d b4 16 94 00 00 [ +0.000002] RSP: 0018:ffffc90003c77d60 EFLAGS: 00010097 [ +0.000001] RAX: 0000000000000001 RBX: 0000000000000002 RCX: 0000000000000000 [ +0.000001] RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffff88820b924900 [ +0.000002] RBP: ffff88820b924900 R08: ffffc90003c77d90 R09: 000000000003bfd0 [ +0.000001] R10: ffff88820b924900 R11: ffffc90003c77c68 R12: 0000000000000000 [ +0.000001] R13: 0000000000000000 R14: ffffc90003c77d90 R15: ffffffffc0fa6f40 [ +0.000001] FS: 0000000000000000(0000) GS:ffff88846fb80000(0000) knlGS:0000000000000000 [ +0.000001] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ +0.000001] CR2: 00007fafda7ae008 CR3: 000000046d220005 CR4: 00000000000606e0 [ +0.000002] Call Trace: [ +0.000003] <TASK> [ +0.000001] ? __ieee80211_wake_queue+0xd5/0x180 [mac80211] [ +0.000044] ? __warn+0x81/0x130 [ +0.000005] ? __ieee80211_wake_queue+0xd5/0x180 [mac80211] [ +0.000045] ? report_bug+0x171/0x1a0 [ +0.000004] ? handle_bug+0x41/0x70 [ +0.000004] ? exc_invalid_op+0x17/0x70 [ +0.000003] ? asm_exc_invalid_op+0x1a/0x20 [ +0.000005] ? __ieee80211_wake_queue+0xd5/0x180 [mac80211] [ +0.000043] ieee80211_wake_queue+0x4a/0x80 [mac80211] [ +0.000044] b43_dma_handle_txstatus+0x29c/0x3a0 [b43] [ +0.000016] ? __pfx_irq_thread_fn+0x10/0x10 [ +0.000002] b43_handle_txstatus+0x61/0x80 [b43] [ +0.000012] b43_interrupt_thread_handler+0x3f9/0x6b0 [b43] [ +0.000011] irq_thread_fn+0x23/0x60 [ +0.000002] irq_thread+0xfe/0x1c0 [ +0.000002] ? __pfx_irq_thread_dtor+0x10/0x10 [ +0.000001] ? __pfx_irq_thread+0x10/0x10 [ +0.000001] kthread+0xe8/0x120 [ +0.000003] ? __pfx_kthread+0x10/0x10 [ +0.000003] ret_from_fork+0x34/0x50 [ +0.000002] ? __pfx_kthread+0x10/0x10 [ +0.000002] ret_from_fork_asm+0x1b/0x30 [ +0.000004] </TASK> [ +0.000001] ---[ end trace 0000000000000000 ]--- [ +0.000065] ------------[ cut here ]------------ [ +0.000001] WARNING: CPU: 0 PID: 56077 at net/mac80211/util.c:514 __ieee80211_stop_queue+0xcc/0xe0 [mac80211] [ +0.000077] Modules linked in: b43(O) snd_seq_dummy snd_hrtimer snd_seq snd_seq_device nft_chain_nat xt_MASQUERADE nf_nat xfrm_user xfrm_algo xt_addrtype overlay ccm af_packet amdgpu snd_hda_codec_cirrus snd_hda_codec_generic ledtrig_audio drm_exec amdxcp gpu_sched xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip6t_rpfilter ipt_rpfilter xt_pkttype xt_LOG nf_log_syslog xt_tcpudp nft_compat nf_tables nfnetlink sch_fq_codel btusb uinput iTCO_wdt ctr btrtl intel_pmc_bxt i915 intel_rapl_msr mei_hdcp mei_pxp joydev at24 watchdog btintel atkbd libps2 serio radeon btbcm vivaldi_fmap btmtk intel_rapl_common snd_hda_codec_hdmi bluetooth uvcvideo nls_iso8859_1 applesmc nls_cp437 x86_pkg_temp_thermal snd_hda_intel intel_powerclamp vfat videobuf2_vmalloc coretemp fat snd_intel_dspcfg crc32_pclmul uvc polyval_clmulni snd_intel_sdw_acpi loop videobuf2_memops snd_hda_codec tun drm_suballoc_helper polyval_generic drm_ttm_helper drm_buddy tap ecdh_generic videobuf2_v4l2 gf128mul macvlan ttm ghash_clmulni_intel ecc tg3 [ +0.000073] videodev bridge snd_hda_core rapl crc16 drm_display_helper cec mousedev snd_hwdep evdev intel_cstate bcm5974 hid_appleir videobuf2_common stp mac_hid libphy snd_pcm drm_kms_helper acpi_als mei_me intel_uncore llc mc snd_timer intel_gtt industrialio_triggered_buffer apple_mfi_fastcharge i2c_i801 mei snd lpc_ich agpgart ptp i2c_smbus thunderbolt apple_gmux i2c_algo_bit kfifo_buf video industrialio soundcore pps_core wmi tiny_power_button sbs sbshc button ac cordic bcma mac80211 cfg80211 ssb rfkill libarc4 kvm_intel kvm drm irqbypass fuse backlight firmware_class efi_pstore configfs efivarfs dmi_sysfs ip_tables x_tables autofs4 dm_crypt cbc encrypted_keys trusted asn1_encoder tee tpm rng_core input_leds hid_apple led_class hid_generic usbhid hid sd_mod t10_pi crc64_rocksoft crc64 crc_t10dif crct10dif_generic ahci libahci libata uhci_hcd ehci_pci ehci_hcd crct10dif_pclmul crct10dif_common sha512_ssse3 sha512_generic sha256_ssse3 sha1_ssse3 aesni_intel usbcore scsi_mod libaes crypto_simd cryptd scsi_common [ +0.000084] usb_common rtc_cmos btrfs blake2b_generic libcrc32c crc32c_generic crc32c_intel xor raid6_pq dm_snapshot dm_bufio dm_mod dax [last unloaded: b43] [ +0.000012] CPU: 0 PID: 56077 Comm: kworker/u16:17 Tainted: G W O 6.6.7 #1-NixOS [ +0.000003] Hardware name: Apple Inc. MacBookPro8,3/Mac-942459F5819B171B, BIOS 87.0.0.0.0 06/13/2019 [ +0.000001] Workqueue: phy7 b43_tx_work [b43] [ +0.000019] RIP: 0010:__ieee80211_stop_queue+0xcc/0xe0 [mac80211] [ +0.000076] Code: 74 11 48 8b 78 08 0f b7 d6 89 e9 4c 89 e6 e8 ab f4 00 00 65 ff 0d 9c b7 34 3f 0f 85 55 ff ff ff 0f 1f 44 00 00 e9 4b ff ff ff <0f> 0b 5b 5d 41 5c 41 5d c3 cc cc cc cc 0f 1f 80 00 00 00 00 90 90 [ +0.000002] RSP: 0000:ffffc90004157d50 EFLAGS: 00010097 [ +0.000002] RAX: 0000000000000001 RBX: 0000000000000002 RCX: 0000000000000000 [ +0.000002] RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffff8882d65d0900 [ +0.000002] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 [ +0.000001] R10: 00000000000000ff R11: ffff88814d0155a0 R12: ffff8882d65d0900 [ +0.000002] R13: 0000000000000000 R14: ffff8881002d2800 R15: 00000000000000d0 [ +0.000002] FS: 0000000000000000(0000) GS:ffff88846f800000(0000) knlGS:0000000000000000 [ +0.000003] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ +0.000002] CR2: 00007f2e8c10c880 CR3: 0000000385b66005 CR4: 00000000000606f0 [ +0.000002] Call Trace: [ +0.000001] <TASK> [ +0.000001] ? __ieee80211_stop_queue+0xcc/0xe0 [mac80211] [ +0.000075] ? __warn+0x81/0x130 [ +0.000004] ? __ieee80211_stop_queue+0xcc/0xe0 [mac80211] [ +0.000075] ? report_bug+0x171/0x1a0 [ +0.000005] ? handle_bug+0x41/0x70 [ +0.000003] ? exc_invalid_op+0x17/0x70 [ +0.000004] ? asm_exc_invalid_op+0x1a/0x20 [ +0.000004] ? __ieee80211_stop_queue+0xcc/0xe0 [mac80211] [ +0.000076] ieee80211_stop_queue+0x36/0x50 [mac80211] [ +0.000077] b43_dma_tx+0x550/0x780 [b43] [ +0.000023] b43_tx_work+0x90/0x130 [b43] [ +0.000018] process_one_work+0x174/0x340 [ +0.000003] worker_thread+0x27b/0x3a0 [ +0.000004] ? __pfx_worker_thread+0x10/0x10 [ +0.000002] kthread+0xe8/0x120 [ +0.000003] ? __pfx_kthread+0x10/0x10 [ +0.000004] ret_from_fork+0x34/0x50 [ +0.000002] ? __pfx_kthread+0x10/0x10 [ +0.000003] ret_from_fork_asm+0x1b/0x30 [ +0.000006] </TASK> [ +0.000001] ---[ end trace 0000000000000000 ]--- Fixes: e6f5b93 ("b43: Add QOS support") Signed-off-by: Rahul Rameshbabu <sergeantsagara@protonmail.com> Reviewed-by: Julian Calaby <julian.calaby@gmail.com> Signed-off-by: Kalle Valo <kvalo@kernel.org> Link: https://msgid.link/20231231050300.122806-2-sergeantsagara@protonmail.com Signed-off-by: Sasha Levin <sashal@kernel.org>
diff --git a/drivers/net/wireless/broadcom/b43/b43.h b/drivers/net/wireless/broadcom/b43/b43.h
@@ -1082,6 +1082,22 @@ static inline bool b43_using_pio_transfers(struct b43_wldev *dev)
 	return dev->__using_pio_transfers;
 }
 
+static inline void b43_wake_queue(struct b43_wldev *dev, int queue_prio)
+{
+	if (dev->qos_enabled)
+		ieee80211_wake_queue(dev->wl->hw, queue_prio);
+	else
+		ieee80211_wake_queue(dev->wl->hw, 0);
+}
+
+static inline void b43_stop_queue(struct b43_wldev *dev, int queue_prio)
+{
+	if (dev->qos_enabled)
+		ieee80211_stop_queue(dev->wl->hw, queue_prio);
+	else
+		ieee80211_stop_queue(dev->wl->hw, 0);
+}
+
 /* Message printing */
 __printf(2, 3) void b43info(struct b43_wl *wl, const char *fmt, ...);
 __printf(2, 3) void b43err(struct b43_wl *wl, const char *fmt, ...);
diff --git a/drivers/net/wireless/broadcom/b43/dma.c b/drivers/net/wireless/broadcom/b43/dma.c
@@ -1399,7 +1399,7 @@ int b43_dma_tx(struct b43_wldev *dev, struct sk_buff *skb)
 	    should_inject_overflow(ring)) {
 		/* This TX ring is full. */
 		unsigned int skb_mapping = skb_get_queue_mapping(skb);
-		ieee80211_stop_queue(dev->wl->hw, skb_mapping);
+		b43_stop_queue(dev, skb_mapping);
 		dev->wl->tx_queue_stopped[skb_mapping] = true;
 		ring->stopped = true;
 		if (b43_debug(dev, B43_DBG_DMAVERBOSE)) {
@@ -1570,7 +1570,7 @@ void b43_dma_handle_txstatus(struct b43_wldev *dev,
 	} else {
 		/* If the driver queue is running wake the corresponding
 		 * mac80211 queue. */
-		ieee80211_wake_queue(dev->wl->hw, ring->queue_prio);
+		b43_wake_queue(dev, ring->queue_prio);
 		if (b43_debug(dev, B43_DBG_DMAVERBOSE)) {
 			b43dbg(dev->wl, "Woke up TX ring %d\n", ring->index);
 		}
