[PATCH wireless v2 0/4] wifi: b43: Various QoS-related fixes

[PATCH wireless v2 0/4] wifi: b43: Various QoS-related fixes

[Rahul Rameshbabu]

Recently acquired a MacBookPro8,3 (early 2011), which has a bcm4331 card.
Noticed some issues with the wireless driver, specifically related to QoS, when
using this device.

Out of the box, applications like ssh appear to not work with the device when
QoS is enabled. This series attempts to improve the out-of-box experience while
cleaning up some fundamental issues in the driver when QoS is disabled, either
by the related kernel parameter or the newly introduced QoS disablement
function.

Running FW 784.2 during testing.

Log:
    [   11.661972] b43-phy0: Loading firmware version 784.2 (2012-08-15 21:35:19)
    [   11.919942] b43-phy0: Loading firmware version 784.2 (2012-08-15 21:35:19)
    [   13.717460] [drm] amdgpu kernel modesetting enabled.
    [   13.717705] amdgpu: Virtual CRAT table created for CPU
    [   13.717719] amdgpu: Topology: Add CPU node
    [   13.776896] NET: Registered PF_PACKET protocol family
    [   15.234058] b43-phy0: Loading firmware version 784.2 (2012-08-15 21:35:19)
    [   15.319388] wlp3s0b1: authenticate with 1c:87:2c:6f:f4:e0
    [   15.333239] wlp3s0b1: send auth to 1c:87:2c:6f:f4:e0 (try 1/3)
    [   15.341672] wlp3s0b1: authenticated
    [   15.341921] wlp3s0b1: associate with 1c:87:2c:6f:f4:e0 (try 1/3)
    [   15.346912] wlp3s0b1: RX AssocResp from 1c:87:2c:6f:f4:e0 (capab=0x411 status=0 aid=3)
    [   15.347255] wlp3s0b1: associated

Link: https://lore.kernel.org/linux-wireless/20231230045105.91351-1-sergeantsagara@protonmail.com/

Rahul Rameshbabu (4):
  wifi: b43: Stop/wake correct queue in DMA Tx path when QoS is disabled
  wifi: b43: Stop/wake correct queue in PIO Tx path when QoS is disabled
  wifi: b43: Stop correct queue in DMA worker when QoS is disabled
  wifi: b43: Disable QoS for bcm4331

 drivers/net/wireless/broadcom/b43/b43.h  | 16 ++++++++++++++++
 drivers/net/wireless/broadcom/b43/dma.c  |  4 ++--
 drivers/net/wireless/broadcom/b43/main.c | 16 +++++++++-------
 drivers/net/wireless/broadcom/b43/pio.c  |  6 +++---
 4 files changed, 30 insertions(+), 12 deletions(-)

-- 
2.42.0



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[PATCH wireless v2 1/4] wifi: b43: Stop/wake correct queue in DMA Tx path when QoS is disabled

[Rahul Rameshbabu]

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: e6f5b934fba8 ("b43: Add QOS support")
Signed-off-by: Rahul Rameshbabu <sergeantsagara@protonmail.com>
---

Notes:
    Changes:
    
        v1->v2:
            - Refactored logic with helpers (suggested by Larry Finger
              <Larry.Finger@lwfinger.net>)
    
    Issue Details:
    
        When QoS was first introduced to the b43 driver in commit
        e6f5b934fba8 ("b43: Add QOS support"), four rings were allocated for
        different QoS priorities for video, voice, best effort, and background.
        The core networking stack maps these priorities in the skb, and these
        mappings are noted in the ring's queue_prio member. When disabling QoS
        in the driver, the skb will still contain the mapping for the core
        stack while only one queue is actually considered active (the best
        effort queue). In the situation that QoS is disabled, b43 needs to pass
        0 to ieee80211 queue functions since the number of queues is set to 1
        in the struct ieee80211_hw queues member.

 drivers/net/wireless/broadcom/b43/b43.h | 16 ++++++++++++++++
 drivers/net/wireless/broadcom/b43/dma.c |  4 ++--
 2 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/broadcom/b43/b43.h b/drivers/net/wireless/broadcom/b43/b43.h
index 67b4bac048e5..c0d8fc0b22fb 100644
--- 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
index 760d1a28edc6..6ac7dcebfff9 100644
--- 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);
 		}
-- 
2.42.0



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Re: [PATCH wireless v2 1/4] wifi: b43: Stop/wake correct queue in DMA Tx path when QoS is disabled

[Julian Calaby]

Hi Rahul,

On Sun, Dec 31, 2023 at 4:03 PM Rahul Rameshbabu
<sergeantsagara@protonmail.com> wrote:
>
> 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.
>
> [snip]
>
> Fixes: e6f5b934fba8 ("b43: Add QOS support")
> Signed-off-by: Rahul Rameshbabu <sergeantsagara@protonmail.com>

LGTM

Reviewed-by: Julian Calaby <julian.calaby@gmail.com>

Thanks,

-- 
Julian Calaby

Email: julian.calaby@gmail.com
Profile: http://www.google.com/profiles/julian.calaby/

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Re: [PATCH wireless v2 1/4] wifi: b43: Stop/wake correct queue in DMA Tx path when QoS is disabled

[Kalle Valo]

Rahul Rameshbabu <sergeantsagara@protonmail.com> wrote:

> 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 macv
 lan 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_mo
 d 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 macv
 lan 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_mo
 d 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: e6f5b934fba8 ("b43: Add QOS support")
> Signed-off-by: Rahul Rameshbabu <sergeantsagara@protonmail.com>
> Reviewed-by: Julian Calaby <julian.calaby@gmail.com>

4 patches applied to wireless-next.git, thanks.

9636951e4468 wifi: b43: Stop/wake correct queue in DMA Tx path when QoS is disabled
77135a38f6c2 wifi: b43: Stop/wake correct queue in PIO Tx path when QoS is disabled
581c8967d66c wifi: b43: Stop correct queue in DMA worker when QoS is disabled
09795bded2e7 wifi: b43: Disable QoS for bcm4331

-- 
https://patchwork.kernel.org/project/linux-wireless/patch/20231231050300.122806-2-sergeantsagara@protonmail.com/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches


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[PATCH wireless v2 2/4] wifi: b43: Stop/wake correct queue in PIO Tx path when QoS is disabled

[Rahul Rameshbabu]

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.

Fixes: 5100d5ac81b9 ("b43: Add PIO support for PCMCIA devices")
Signed-off-by: Rahul Rameshbabu <sergeantsagara@protonmail.com>
---

Notes:
    Changes:
    
        v1->v2:
            - Refactored logic with helpers (suggested by Larry Finger
              <Larry.Finger@lwfinger.net>)
    
    Issue Details:
    
        When PIO support was first introduced to the b43 driver in commit
        5100d5ac81b9 ("b43: Add PIO support for PCMCIA devices"), four queues
        were allocated for different QoS priorities for video, voice, best
        effort, and background. This was modelled after commit
        e6f5b934fba8 ("b43: Add QOS support"), which has the following issue.
        The core networking stack maps these priorities in the skb, and these
        mappings are noted in the ring's queue_prio member. When disabling QoS
        in the driver, the skb will still contain the mapping for the core
        stack while only one queue is actually considered active (the best
        effort queue). In the situation that QoS is disabled, b43 needs to pass
        0 to ieee80211 queue functions since the number of queues is set to 1
        in the struct ieee80211_hw queues member.

 drivers/net/wireless/broadcom/b43/pio.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/wireless/broadcom/b43/pio.c b/drivers/net/wireless/broadcom/b43/pio.c
index 0cf70fdb60a6..e41f2f5b4c26 100644
--- a/drivers/net/wireless/broadcom/b43/pio.c
+++ b/drivers/net/wireless/broadcom/b43/pio.c
@@ -525,7 +525,7 @@ int b43_pio_tx(struct b43_wldev *dev, struct sk_buff *skb)
 	if (total_len > (q->buffer_size - q->buffer_used)) {
 		/* Not enough memory on the queue. */
 		err = -EBUSY;
-		ieee80211_stop_queue(dev->wl->hw, skb_get_queue_mapping(skb));
+		b43_stop_queue(dev, skb_get_queue_mapping(skb));
 		q->stopped = true;
 		goto out;
 	}
@@ -552,7 +552,7 @@ int b43_pio_tx(struct b43_wldev *dev, struct sk_buff *skb)
 	if (((q->buffer_size - q->buffer_used) < roundup(2 + 2 + 6, 4)) ||
 	    (q->free_packet_slots == 0)) {
 		/* The queue is full. */
-		ieee80211_stop_queue(dev->wl->hw, skb_get_queue_mapping(skb));
+		b43_stop_queue(dev, skb_get_queue_mapping(skb));
 		q->stopped = true;
 	}
 
@@ -587,7 +587,7 @@ void b43_pio_handle_txstatus(struct b43_wldev *dev,
 	list_add(&pack->list, &q->packets_list);
 
 	if (q->stopped) {
-		ieee80211_wake_queue(dev->wl->hw, q->queue_prio);
+		b43_wake_queue(dev, q->queue_prio);
 		q->stopped = false;
 	}
 }
-- 
2.42.0



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Re: [PATCH wireless v2 2/4] wifi: b43: Stop/wake correct queue in PIO Tx path when QoS is disabled

[Julian Calaby]

Hi Rahul,

On Sun, Dec 31, 2023 at 4:03 PM Rahul Rameshbabu
<sergeantsagara@protonmail.com> wrote:
>
> 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.
>
> Fixes: 5100d5ac81b9 ("b43: Add PIO support for PCMCIA devices")
> Signed-off-by: Rahul Rameshbabu <sergeantsagara@protonmail.com>

LGTM

Reviewed-by: Julian Calaby <julian.calaby@gmail.com>

Thanks,

-- 
Julian Calaby

Email: julian.calaby@gmail.com
Profile: http://www.google.com/profiles/julian.calaby/

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[PATCH wireless v2 3/4] wifi: b43: Stop correct queue in DMA worker when QoS is disabled

[Rahul Rameshbabu]

When QoS is disabled, the queue priority value will not map to the correct
ieee80211 queue since there is only one queue. Stop queue 0 when QoS is
disabled to prevent trying to stop a non-existent queue and failing to stop
the actual queue instantiated.

Fixes: bad691946966 ("b43: avoid packet losses in the dma worker code.")
Signed-off-by: Rahul Rameshbabu <sergeantsagara@protonmail.com>
---

Notes:
    Changes:
    
        v1->v2:
            - Refactored logic with helpers (suggested by Larry Finger
              <Larry.Finger@lwfinger.net>)
    
    Issue Details:
    
        When QoS was first introduced to the b43 driver in commit
        e6f5b934fba8 ("b43: Add QOS support"), four rings were allocated for
        different QoS priorities for video, voice, best effort, and background.
        The core networking stack maps these priorities in the skb, and these
        mappings are noted in the ring's queue_prio member. When disabling QoS
        in the driver, the skb will still contain the mapping for the core
        stack while only one queue is actually considered active (the best
        effort queue). In the situation that QoS is disabled, b43 needs to pass
        0 to ieee80211 queue functions since the number of queues is set to 1
        in the struct ieee80211_hw queues member. This issue was then extended
        to the changes in commit bad691946966 ("b43: avoid packet losses in the
        dma worker code.").

 drivers/net/wireless/broadcom/b43/main.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/drivers/net/wireless/broadcom/b43/main.c b/drivers/net/wireless/broadcom/b43/main.c
index 92ca0b2ca286..97d8bdeaa06c 100644
--- a/drivers/net/wireless/broadcom/b43/main.c
+++ b/drivers/net/wireless/broadcom/b43/main.c
@@ -3603,7 +3603,7 @@ static void b43_tx_work(struct work_struct *work)
 				err = b43_dma_tx(dev, skb);
 			if (err == -ENOSPC) {
 				wl->tx_queue_stopped[queue_num] = true;
-				ieee80211_stop_queue(wl->hw, queue_num);
+				b43_stop_queue(dev, queue_num);
 				skb_queue_head(&wl->tx_queue[queue_num], skb);
 				break;
 			}
@@ -3627,6 +3627,7 @@ static void b43_op_tx(struct ieee80211_hw *hw,
 		      struct sk_buff *skb)
 {
 	struct b43_wl *wl = hw_to_b43_wl(hw);
+	u16 skb_queue_mapping;
 
 	if (unlikely(skb->len < 2 + 2 + 6)) {
 		/* Too short, this can't be a valid frame. */
@@ -3635,12 +3636,12 @@ static void b43_op_tx(struct ieee80211_hw *hw,
 	}
 	B43_WARN_ON(skb_shinfo(skb)->nr_frags);
 
-	skb_queue_tail(&wl->tx_queue[skb->queue_mapping], skb);
-	if (!wl->tx_queue_stopped[skb->queue_mapping]) {
+	skb_queue_mapping = skb_get_queue_mapping(skb);
+	skb_queue_tail(&wl->tx_queue[skb_queue_mapping], skb);
+	if (!wl->tx_queue_stopped[skb_queue_mapping])
 		ieee80211_queue_work(wl->hw, &wl->tx_work);
-	} else {
-		ieee80211_stop_queue(wl->hw, skb->queue_mapping);
-	}
+	else
+		b43_stop_queue(wl->current_dev, skb_queue_mapping);
 }
 
 static void b43_qos_params_upload(struct b43_wldev *dev,
-- 
2.42.0



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Re: [PATCH wireless v2 3/4] wifi: b43: Stop correct queue in DMA worker when QoS is disabled

[Julian Calaby]

Hi Rahul,

On Sun, Dec 31, 2023 at 4:04 PM Rahul Rameshbabu
<sergeantsagara@protonmail.com> wrote:
>
> When QoS is disabled, the queue priority value will not map to the correct
> ieee80211 queue since there is only one queue. Stop queue 0 when QoS is
> disabled to prevent trying to stop a non-existent queue and failing to stop
> the actual queue instantiated.
>
> Fixes: bad691946966 ("b43: avoid packet losses in the dma worker code.")
> Signed-off-by: Rahul Rameshbabu <sergeantsagara@protonmail.com>

LGTM

Reviewed-by: Julian Calaby <julian.calaby@gmail.com>

Thanks,

-- 
Julian Calaby

Email: julian.calaby@gmail.com
Profile: http://www.google.com/profiles/julian.calaby/

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[PATCH wireless v2 4/4] wifi: b43: Disable QoS for bcm4331

[Rahul Rameshbabu]

bcm4331 seems to not function correctly with QoS support. This may be due
to issues with currently available firmware or potentially a device
specific issue.

When queues that are not of the default "best effort" priority are
selected, traffic appears to not transmit out of the hardware while no
errors are returned. This behavior is present among all the other priority
queues: video, voice, and background. While this can be worked around by
setting a kernel parameter, the default behavior is problematic for most
users and may be difficult to debug. This patch offers a working out-of-box
experience for bcm4331 users.

Log of the issue (using ssh low-priority traffic as an example):
    ssh -T -vvvv git@github.com
    OpenSSH_9.6p1, OpenSSL 3.0.12 24 Oct 2023
    debug1: Reading configuration data /etc/ssh/ssh_config
    debug2: checking match for 'host * exec "/nix/store/q1c2flcykgr4wwg5a6h450hxbk4ch589-bash-5.2-p15/bin/bash -c '/nix/store/c015armnkhr6v18za0rypm7sh1i8js8w-gnupg-2.4.1/bin/gpg-connect-agent --quiet updatestartuptty /bye >/dev/null 2>&1'"' host github.com originally github.com
    debug3: /etc/ssh/ssh_config line 5: matched 'host "github.com"'
    debug1: Executing command: '/nix/store/q1c2flcykgr4wwg5a6h450hxbk4ch589-bash-5.2-p15/bin/bash -c '/nix/store/c015armnkhr6v18za0rypm7sh1i8js8w-gnupg-2.4.1/bin/gpg-connect-agent --quiet updatestartuptty /bye >/dev/null 2>&1''
    debug3: command returned status 0
    debug3: /etc/ssh/ssh_config line 5: matched 'exec "/nix/store/q1c2flcykgr4wwg5a6h450hxbk4ch589-bash-5.2-p15/bin/bash -c '/nix/store/c015armnkhr6v18za0r"'
    debug2: match found
    debug1: /etc/ssh/ssh_config line 9: Applying options for *
    debug3: expanded UserKnownHostsFile '~/.ssh/known_hosts' -> '/home/binary-eater/.ssh/known_hosts'
    debug3: expanded UserKnownHostsFile '~/.ssh/known_hosts2' -> '/home/binary-eater/.ssh/known_hosts2'
    debug2: resolving "github.com" port 22
    debug3: resolve_host: lookup github.com:22
    debug3: channel_clear_timeouts: clearing
    debug3: ssh_connect_direct: entering
    debug1: Connecting to github.com [192.30.255.113] port 22.
    debug3: set_sock_tos: set socket 3 IP_TOS 0x48

Fixes: e6f5b934fba8 ("b43: Add QOS support")
Signed-off-by: Rahul Rameshbabu <sergeantsagara@protonmail.com>
---

Notes:
    Changes:
    
        v1->v2:
            - Simplified logic to solely just disable QoS for
              bcm4331 (suggested by Michael Büsch <m@bues.ch>)

 drivers/net/wireless/broadcom/b43/main.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/broadcom/b43/main.c b/drivers/net/wireless/broadcom/b43/main.c
index 97d8bdeaa06c..effb6c23f825 100644
--- a/drivers/net/wireless/broadcom/b43/main.c
+++ b/drivers/net/wireless/broadcom/b43/main.c
@@ -2587,7 +2587,8 @@ static void b43_request_firmware(struct work_struct *work)
 
 start_ieee80211:
 	wl->hw->queues = B43_QOS_QUEUE_NUM;
-	if (!modparam_qos || dev->fw.opensource)
+	if (!modparam_qos || dev->fw.opensource ||
+	    dev->dev->chip_id == BCMA_CHIP_ID_BCM4331)
 		wl->hw->queues = 1;
 
 	err = ieee80211_register_hw(wl->hw);
-- 
2.42.0



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Re: [PATCH wireless v2 4/4] wifi: b43: Disable QoS for bcm4331

[Julian Calaby]

Hi Rahul,

On Sun, Dec 31, 2023 at 4:04 PM Rahul Rameshbabu
<sergeantsagara@protonmail.com> wrote:
>
> bcm4331 seems to not function correctly with QoS support. This may be due
> to issues with currently available firmware or potentially a device
> specific issue.
>
> When queues that are not of the default "best effort" priority are
> selected, traffic appears to not transmit out of the hardware while no
> errors are returned. This behavior is present among all the other priority
> queues: video, voice, and background. While this can be worked around by
> setting a kernel parameter, the default behavior is problematic for most
> users and may be difficult to debug. This patch offers a working out-of-box
> experience for bcm4331 users.
>
> [snip]
>
> Fixes: e6f5b934fba8 ("b43: Add QOS support")
> Signed-off-by: Rahul Rameshbabu <sergeantsagara@protonmail.com>

LGTM

Reviewed-by: Julian Calaby <julian.calaby@gmail.com>

Thanks,

-- 
Julian Calaby

Email: julian.calaby@gmail.com
Profile: http://www.google.com/profiles/julian.calaby/

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Re: [PATCH wireless v2 0/4] wifi: b43: Various QoS-related fixes

[Michael Büsch]

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On Sun, 31 Dec 2023 05:03:27 +0000
Rahul Rameshbabu <sergeantsagara@protonmail.com> wrote:

> Rahul Rameshbabu (4):
>   wifi: b43: Stop/wake correct queue in DMA Tx path when QoS is disabled
>   wifi: b43: Stop/wake correct queue in PIO Tx path when QoS is disabled
>   wifi: b43: Stop correct queue in DMA worker when QoS is disabled
>   wifi: b43: Disable QoS for bcm4331
> 
>  drivers/net/wireless/broadcom/b43/b43.h  | 16 ++++++++++++++++
>  drivers/net/wireless/broadcom/b43/dma.c  |  4 ++--
>  drivers/net/wireless/broadcom/b43/main.c | 16 +++++++++-------
>  drivers/net/wireless/broadcom/b43/pio.c  |  6 +++---
>  4 files changed, 30 insertions(+), 12 deletions(-)
> 


Acked-by: Michael Büsch <m@bues.ch>

for the whole v2 series.

-- 
Michael Büsch
https://bues.ch/

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