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Linux/WL1831MOD: WIFI kernel crashes and low throughput

Eric Dahlseng
Prodigy 70 points
Part Number: WL1831MOD
Other Parts Discussed in Thread: WL1831

Tool/software: Linux

Hello,

We've been using the WL1831MOD for WIFI connectivity, and have been encountering a few performance issues:

  • WIFI kernel crashing on scans: We've experienced this crashing consistently when scanning for WIFI access points, but we haven't seen it on all devices. I've attached a log of the error that we see at the end of this post. We are still trying to determine a process for reproducing this error. When a machine shows this error once, it continues to produce it consistently on scans, and across reboots, but we haven’t found a reliable way to trigger the error the first time.
  • Low throughput: Occasionally, we've seen throughput around 1-3 Mbits/second. This problem tends to be intermittent as well, and we haven't found a way to reliably reproduce it.
  • Slow download speeds: During tests where we saw better throughput, we would see TCP throughput around 40 Mbits/second. With that throughput, we should expect to download a 100 MB file in ~20 seconds. Nevertheless, downloading a 100 MB file over HTTP, we see download times of ~45 seconds or more.

System Details:

  • Host platform: Freescale I.MX.6 Quadcore
  • Operating system: Custom build on top of Yocto Jethro
  • WiLink™ chip flavor: WL1831MOD
  • Antenna: Laird Technologies CAF94505
  • WL18xx MAC firmware version: 8.9.0.2.55
  • WL18xx PHY firmware version: 8.2.0.1.233
  • WL18xx software driver version: R8.6_SP1

Any ideas on what's causing these issues, or what we should look into next?

Thank you,

Eric

kernel crash log:

root@var-som-mx6:~# iw dev wlan0 scan
[  354.734144] wlcore: ERROR SW watchdog interrupt received! starting recovery.
[  354.741296] ------------[ cut here ]------------
[  354.746154] WARNING: CPU: 0 PID: 688 at /var/lib/jenkins/jobs/Axe-Develop/workspace/yocto/build/tmp/work/var_som_mx6-poky-linux-gnueabi/ti-compat-wireless-wl18xx/R8.6_SP1-r0/compat-wireless/drivers/net/wireless/ti/wlcore/main.c:797 wl12xx_queue_recovery_work.part.9+0x58/0x5c [wlcore]()
[  354.771523] Modules linked in: wl18xx(O) wlcore(O) mac80211(O) cfg80211(O) mxc_v4l2_capture wlcore_sdio(O) ipu_bg_overlay_sdc ipu_still ipu_prp_enc ipu_csi_enc ipu_fg_overlay_sdc compat(O) ov7251_camera_mipi_int v4l2_int_device mxc_dcic galcore(O)
[  354.793784] CPU: 0 PID: 688 Comm: irq/224-wl18xx Tainted: G        W  O    4.1.15-6QP+g2ea728e #1
[  354.802689] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
[  354.809279] [<800177ec>] (unwind_backtrace) from [<800133cc>] (show_stack+0x10/0x14)
[  354.817065] [<800133cc>] (show_stack) from [<807a0f64>] (dump_stack+0x84/0xc4)
[  354.824313] [<807a0f64>] (dump_stack) from [<800369a0>] (warn_slowpath_common+0x80/0xb0)
[  354.832439] [<800369a0>] (warn_slowpath_common) from [<80036a6c>] (warn_slowpath_null+0x1c/0x24)
[  354.841333] [<80036a6c>] (warn_slowpath_null) from [<7f165ffc>] (wl12xx_queue_recovery_work.part.9+0x58/0x5c [wlcore])
[  354.852161] [<7f165ffc>] (wl12xx_queue_recovery_work.part.9 [wlcore]) from [<7f1662fc>] (wlcore_irq+0x184/0x18c [wlcore])
[  354.863211] [<7f1662fc>] (wlcore_irq [wlcore]) from [<8006fe68>] (irq_thread_fn+0x1c/0x40)
[  354.871515] [<8006fe68>] (irq_thread_fn) from [<8007016c>] (irq_thread+0x12c/0x178)
[  354.879213] [<8007016c>] (irq_thread) from [<8004f0a0>] (kthread+0xdc/0xf4)
[  354.886213] [<8004f0a0>] (kthread) from [<800101a8>] (ret_from_fork+0x14/0x2c)
[  354.893447] ---[ end trace f6a4485cb2f51b93 ]---
[  354.898112] wlcore: Hardware recovery in progress. FW ver: Rev 8.9.0.2.55
[  354.905666] wlcore: pc: 0x117538, hint_sts: 0x00000000 count: 13
[  354.912260] wlcore: down
[  354.914805] wlcore: down
[  354.918478] ieee80211 phy0: Hardware restart was requested
[  355.373897] wlcore: PHY firmware version: Rev 8.2.0.1.233
[  355.529510] wlcore: firmware booted (Rev 8.9.0.2.55)
[  355.568502] wlcore: Association completed.
scan aborted!

  • 0
    TI__Mastermind 20285 points
    Hello,

    A crash during scan is normally related to not receiving interrupts correctly from the wlan_irq gpio pin.
    What configuration are you using for it? In case you are using IRQ_TYPE_LEVEL_HIGH in your .dts file can you try changing to IRQ_TYPE_EDGE_FALLING or IRQ_TYPE_EDGE_RISING and see if it helps?

    In addition, you mentioned you are using FW 8.9.0.2.55. Official R8.6_SP1 firmware is 8.9.0.1.55, so were you provided with a special FW version?

    BR,
    Eyal
  • 0 in reply to Eyal Reizer
    Prodigy 70 points

    Hi Eyal,

    The configuration is already set to IRQ_TYPE_EDGE_RISING.

    Regarding the FW version, we are using a custom bug fix provided by Variscite for the imx 6, which is found here: https://github.com/varigit/meta-variscite-imx/tree/imx-4.1.15-1.2.0_ga-var01/recipes-connectivity/wl18xx-firmware/wl18xx-firmware. That corresponds with 8.9.0.2.55.

    Thanks,

    Eric

  • 0 in reply to Eric Dahlseng
    TI__Mastermind 20285 points

    Hi Eric,

    Can you try changing IRQ_TYPE_EDGE_FALLING? Perhaps the pullup configuration on this platform dictates it?

    We don't use support the Variscite platform internally.Have you tried contacting their support already?

    They should be able to provide you better answers on this issue as it does look platform specific.

    One thing you can try is disabling ELP as in:

    and see if it makes a change?

    Best Regards,

    Eyal

  • 0 in reply to Eyal Reizer
    Prodigy 70 points

    Hi Eyal,

    Thanks for the suggestions. I'll try those out and will get back to you!

    Thanks,

    Eric

  • 0 in reply to Omid (TI)
    Prodigy 70 points

    Hi all,

    Thank you for your patience with my delayed response. Over the last few weeks we've been working with Variscite support to address these issues, and we were able to solve one of the problems. Here's a summary of where we currently stand with everything:

    • WIFI kernel crashing on scans: Changing from IRQ_TYPE_EDGE_RISING to IRQ_TYPE_EDGE_FALLING did not solve the problem (it actually made the situation worse, as WIFI did not work after the change). Unfortunately, we are unable to reliably recreate the crashing issue, so we don't have much more to go off of. Do you have any suggestions for what to try next? If not, we can table this problem until we have more information.
    • Low throughput: We were able to solve this issue. The root cause was a misconfiguration -- we are using the WL1831, but discovered that the module was connecting to 5 GHz networks, and would exhibit extremely low throughput when connected to those networks. After properly running the configure_device.sh script, the 5 GHz networks are no longer visible, solving this problem.
    • Slow download speeds: This problem still remains. When running "iw wlan0 link," the output shows a supported throughput of 72.2 Mbits/sec, but our observed throughput during a throughput test is only around 40 Mbits/sec. Furthermore, downloads of a 100 MB file still take about 1 minute to complete, which seems much longer than it should be based on both the theoretical and observed throughput. Do you have thoughts on what may be causing this? We have been unable to identify an issue with the Variscite platform that could be causing this, so we are not sure what the root cause is yet.

    Thanks,

    Eric

  • 0 in reply to Eric Dahlseng
    TI__Mastermind 20285 points
    Hi Eric,

    Using iw wlan0 link is not a good indication, as it only shows the rate used with latest packets and not actual UDP throughput.
    You need to capture the air using wireleshark/omnipeek during iperf UDP test and look at the actual log to see at what rates the UDP trafiic is seen on the air.
    Are you sure about your .ini file configuration? issues like your are normally related to this. Also, the number of assembled 2.4Ghz antennas is key.

    What module exactly are you using? Is it a TI module, which?
    Can you provide the dump file of your wl18xx-conf.bin as the instructions in:

    www.ti.com/.../swra489.pdf

    See section 4 for dumping the the content of the wl18xx-conf.bin into a text file.

    BR,
    Eyal
  • 0 in reply to Eyal Reizer
    Prodigy 70 points

    Hi Eyal,

    Thanks for the clarification on iw wlan0 link, I had assumed that was a theoretical throughput. Regarding the .ini file configuration, I am not 100% sure about it — those files are currently handled by the Variscite meta layer, and I haven’t touched them myself. What should I be looking for to ensure it’s setup properly? It looks like the system is currently pulling in files from this repo: git://git.ti.com/wilink8-wlan/18xx-ti-utils.git. Looking at the file names in that repo, it doesn’t look like there is a .ini file for the 1831?

    We are using the WL1831MOD, and the dump of wl18xx-conf.bin is attached.

    Thank you for your help,
    Eric

    3542.wl18xx-conf-dump.txt 
    header.magic = 0x10e100ca
header.version = 0x00070007
header.checksum = 0x00000000
core.sg.params = 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x0000000f, 0x0000001b, 0x00000011, 0x000000aa, 0x00000032, 0x00000064, 0x00000320, 0x000000c8, 0x000000c8, 0x00000000, 0x00000000, 0x00000000, 0x00000001, 0x00000000, 0x0000003c, 0x00001388, 0x000004b0, 0x000003e8, 0x00000001, 0x00000003, 0x00000006, 0x0000000a, 0x0000000a, 0x00000002, 0x00000005, 0x0000001e, 0x00000003, 0x0000000a, 0x00000002, 0x00000000, 0x00000019, 0x00000019, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
core.sg.state = 0x01
core.rx.rx_msdu_life_time = 0x0007d000
core.rx.packet_detection_threshold = 0x00000000
core.rx.ps_poll_timeout = 0x000f
core.rx.upsd_timeout = 0x000f
core.rx.rts_threshold = 0x0931
core.rx.rx_cca_threshold = 0x0000
core.rx.irq_blk_threshold = 0xffff
core.rx.irq_pkt_threshold = 0x0000
core.rx.irq_timeout = 0x0258
core.rx.queue_type = 0x00
core.tx.tx_energy_detection = 0x00
core.tx.sta_rc_conf.enabled_rates = 0x00000000
core.tx.sta_rc_conf.short_retry_limit = 0x0a
core.tx.sta_rc_conf.long_retry_limit = 0x0a
core.tx.sta_rc_conf.aflags = 0x00
core.tx.ac_conf_count = 0x04
core.tx.ac_conf0.ac = 0x00
core.tx.ac_conf0.cw_min = 0x0f
core.tx.ac_conf0.cw_max = 0x003f
core.tx.ac_conf0.aifsn = 0x03
core.tx.ac_conf0.tx_op_limit = 0x0000
core.tx.ac_conf1.ac = 0x01
core.tx.ac_conf1.cw_min = 0x0f
core.tx.ac_conf1.cw_max = 0x003f
core.tx.ac_conf1.aifsn = 0x07
core.tx.ac_conf1.tx_op_limit = 0x0000
core.tx.ac_conf2.ac = 0x02
core.tx.ac_conf2.cw_min = 0x0f
core.tx.ac_conf2.cw_max = 0x003f
core.tx.ac_conf2.aifsn = 0x01
core.tx.ac_conf2.tx_op_limit = 0x0bc0
core.tx.ac_conf3.ac = 0x03
core.tx.ac_conf3.cw_min = 0x0f
core.tx.ac_conf3.cw_max = 0x003f
core.tx.ac_conf3.aifsn = 0x01
core.tx.ac_conf3.tx_op_limit = 0x05e0
core.tx.max_tx_retries = 0x64
core.tx.ap_aging_period = 0x012c
core.tx.tid_conf_count = 0x04
core.tx.tid_conf0.queue_id = 0x00
core.tx.tid_conf0.channel_type = 0x01
core.tx.tid_conf0.tsid = 0x00
core.tx.tid_conf0.ps_scheme = 0x00
core.tx.tid_conf0.ack_policy = 0x00
core.tx.tid_conf0.apsd_conf = 0x00000000, 0x00000000
core.tx.tid_conf1.queue_id = 0x01
core.tx.tid_conf1.channel_type = 0x01
core.tx.tid_conf1.tsid = 0x01
core.tx.tid_conf1.ps_scheme = 0x00
core.tx.tid_conf1.ack_policy = 0x00
core.tx.tid_conf1.apsd_conf = 0x00000000, 0x00000000
core.tx.tid_conf2.queue_id = 0x02
core.tx.tid_conf2.channel_type = 0x01
core.tx.tid_conf2.tsid = 0x02
core.tx.tid_conf2.ps_scheme = 0x00
core.tx.tid_conf2.ack_policy = 0x00
core.tx.tid_conf2.apsd_conf = 0x00000000, 0x00000000
core.tx.tid_conf3.queue_id = 0x03
core.tx.tid_conf3.channel_type = 0x01
core.tx.tid_conf3.tsid = 0x03
core.tx.tid_conf3.ps_scheme = 0x00
core.tx.tid_conf3.ack_policy = 0x00
core.tx.tid_conf3.apsd_conf = 0x00000000, 0x00000000
core.tx.tid_conf4.queue_id = 0x00
core.tx.tid_conf4.channel_type = 0x00
core.tx.tid_conf4.tsid = 0x00
core.tx.tid_conf4.ps_scheme = 0x00
core.tx.tid_conf4.ack_policy = 0x00
core.tx.tid_conf4.apsd_conf = 0x00000000, 0x00000000
core.tx.tid_conf5.queue_id = 0x00
core.tx.tid_conf5.channel_type = 0x00
core.tx.tid_conf5.tsid = 0x00
core.tx.tid_conf5.ps_scheme = 0x00
core.tx.tid_conf5.ack_policy = 0x00
core.tx.tid_conf5.apsd_conf = 0x00000000, 0x00000000
core.tx.tid_conf6.queue_id = 0x00
core.tx.tid_conf6.channel_type = 0x00
core.tx.tid_conf6.tsid = 0x00
core.tx.tid_conf6.ps_scheme = 0x00
core.tx.tid_conf6.ack_policy = 0x00
core.tx.tid_conf6.apsd_conf = 0x00000000, 0x00000000
core.tx.tid_conf7.queue_id = 0x00
core.tx.tid_conf7.channel_type = 0x00
core.tx.tid_conf7.tsid = 0x00
core.tx.tid_conf7.ps_scheme = 0x00
core.tx.tid_conf7.ack_policy = 0x00
core.tx.tid_conf7.apsd_conf = 0x00000000, 0x00000000
core.tx.frag_threshold = 0x0930
core.tx.tx_compl_timeout = 0x015e
core.tx.tx_compl_threshold = 0x000a
core.tx.basic_rate = 0x00000001
core.tx.basic_rate_5 = 0x00000008
core.tx.tmpl_short_retry_limit = 0x0a
core.tx.tmpl_long_retry_limit = 0x0a
core.tx.tx_watchdog_timeout = 0x00001388
core.tx.slow_link_thold = 0x03
core.tx.fast_link_thold = 0x1e
core.conn.wake_up_event = 0x02
core.conn.listen_interval = 0x01
core.conn.suspend_wake_up_event = 0x04
core.conn.suspend_listen_interval = 0x03
core.conn.bcn_filt_mode = 0x01
core.conn.bcn_filt_ie_count = 0x03
core.conn.bcn_filt_ie0.ie = 0x25
core.conn.bcn_filt_ie0.rule = 0x02
core.conn.bcn_filt_ie0.oui = 0x00, 0x00, 0x00
core.conn.bcn_filt_ie0.type = 0x00
core.conn.bcn_filt_ie0.version = 0x00, 0x00
core.conn.bcn_filt_ie1.ie = 0x3d
core.conn.bcn_filt_ie1.rule = 0x01
core.conn.bcn_filt_ie1.oui = 0x00, 0x00, 0x00
core.conn.bcn_filt_ie1.type = 0x00
core.conn.bcn_filt_ie1.version = 0x00, 0x00
core.conn.bcn_filt_ie2.ie = 0x2a
core.conn.bcn_filt_ie2.rule = 0x01
core.conn.bcn_filt_ie2.oui = 0x00, 0x00, 0x00
core.conn.bcn_filt_ie2.type = 0x00
core.conn.bcn_filt_ie2.version = 0x00, 0x00
core.conn.bcn_filt_ie3.ie = 0x00
core.conn.bcn_filt_ie3.rule = 0x00
core.conn.bcn_filt_ie3.oui = 0x00, 0x00, 0x00
core.conn.bcn_filt_ie3.type = 0x00
core.conn.bcn_filt_ie3.version = 0x00, 0x00
core.conn.bcn_filt_ie4.ie = 0x00
core.conn.bcn_filt_ie4.rule = 0x00
core.conn.bcn_filt_ie4.oui = 0x00, 0x00, 0x00
core.conn.bcn_filt_ie4.type = 0x00
core.conn.bcn_filt_ie4.version = 0x00, 0x00
core.conn.bcn_filt_ie5.ie = 0x00
core.conn.bcn_filt_ie5.rule = 0x00
core.conn.bcn_filt_ie5.oui = 0x00, 0x00, 0x00
core.conn.bcn_filt_ie5.type = 0x00
core.conn.bcn_filt_ie5.version = 0x00, 0x00
core.conn.bcn_filt_ie6.ie = 0x00
core.conn.bcn_filt_ie6.rule = 0x00
core.conn.bcn_filt_ie6.oui = 0x00, 0x00, 0x00
core.conn.bcn_filt_ie6.type = 0x00
core.conn.bcn_filt_ie6.version = 0x00, 0x00
core.conn.bcn_filt_ie7.ie = 0x00
core.conn.bcn_filt_ie7.rule = 0x00
core.conn.bcn_filt_ie7.oui = 0x00, 0x00, 0x00
core.conn.bcn_filt_ie7.type = 0x00
core.conn.bcn_filt_ie7.version = 0x00, 0x00
core.conn.bcn_filt_ie8.ie = 0x00
core.conn.bcn_filt_ie8.rule = 0x00
core.conn.bcn_filt_ie8.oui = 0x00, 0x00, 0x00
core.conn.bcn_filt_ie8.type = 0x00
core.conn.bcn_filt_ie8.version = 0x00, 0x00
core.conn.bcn_filt_ie9.ie = 0x00
core.conn.bcn_filt_ie9.rule = 0x00
core.conn.bcn_filt_ie9.oui = 0x00, 0x00, 0x00
core.conn.bcn_filt_ie9.type = 0x00
core.conn.bcn_filt_ie9.version = 0x00, 0x00
core.conn.bcn_filt_ie10.ie = 0x00
core.conn.bcn_filt_ie10.rule = 0x00
core.conn.bcn_filt_ie10.oui = 0x00, 0x00, 0x00
core.conn.bcn_filt_ie10.type = 0x00
core.conn.bcn_filt_ie10.version = 0x00, 0x00
core.conn.bcn_filt_ie11.ie = 0x00
core.conn.bcn_filt_ie11.rule = 0x00
core.conn.bcn_filt_ie11.oui = 0x00, 0x00, 0x00
core.conn.bcn_filt_ie11.type = 0x00
core.conn.bcn_filt_ie11.version = 0x00, 0x00
core.conn.bcn_filt_ie12.ie = 0x00
core.conn.bcn_filt_ie12.rule = 0x00
core.conn.bcn_filt_ie12.oui = 0x00, 0x00, 0x00
core.conn.bcn_filt_ie12.type = 0x00
core.conn.bcn_filt_ie12.version = 0x00, 0x00
core.conn.bcn_filt_ie13.ie = 0x00
core.conn.bcn_filt_ie13.rule = 0x00
core.conn.bcn_filt_ie13.oui = 0x00, 0x00, 0x00
core.conn.bcn_filt_ie13.type = 0x00
core.conn.bcn_filt_ie13.version = 0x00, 0x00
core.conn.bcn_filt_ie14.ie = 0x00
core.conn.bcn_filt_ie14.rule = 0x00
core.conn.bcn_filt_ie14.oui = 0x00, 0x00, 0x00
core.conn.bcn_filt_ie14.type = 0x00
core.conn.bcn_filt_ie14.version = 0x00, 0x00
core.conn.bcn_filt_ie15.ie = 0x00
core.conn.bcn_filt_ie15.rule = 0x00
core.conn.bcn_filt_ie15.oui = 0x00, 0x00, 0x00
core.conn.bcn_filt_ie15.type = 0x00
core.conn.bcn_filt_ie15.version = 0x00, 0x00
core.conn.bcn_filt_ie16.ie = 0x00
core.conn.bcn_filt_ie16.rule = 0x00
core.conn.bcn_filt_ie16.oui = 0x00, 0x00, 0x00
core.conn.bcn_filt_ie16.type = 0x00
core.conn.bcn_filt_ie16.version = 0x00, 0x00
core.conn.bcn_filt_ie17.ie = 0x00
core.conn.bcn_filt_ie17.rule = 0x00
core.conn.bcn_filt_ie17.oui = 0x00, 0x00, 0x00
core.conn.bcn_filt_ie17.type = 0x00
core.conn.bcn_filt_ie17.version = 0x00, 0x00
core.conn.bcn_filt_ie18.ie = 0x00
core.conn.bcn_filt_ie18.rule = 0x00
core.conn.bcn_filt_ie18.oui = 0x00, 0x00, 0x00
core.conn.bcn_filt_ie18.type = 0x00
core.conn.bcn_filt_ie18.version = 0x00, 0x00
core.conn.bcn_filt_ie19.ie = 0x00
core.conn.bcn_filt_ie19.rule = 0x00
core.conn.bcn_filt_ie19.oui = 0x00, 0x00, 0x00
core.conn.bcn_filt_ie19.type = 0x00
core.conn.bcn_filt_ie19.version = 0x00, 0x00
core.conn.bcn_filt_ie20.ie = 0x00
core.conn.bcn_filt_ie20.rule = 0x00
core.conn.bcn_filt_ie20.oui = 0x00, 0x00, 0x00
core.conn.bcn_filt_ie20.type = 0x00
core.conn.bcn_filt_ie20.version = 0x00, 0x00
core.conn.bcn_filt_ie21.ie = 0x00
core.conn.bcn_filt_ie21.rule = 0x00
core.conn.bcn_filt_ie21.oui = 0x00, 0x00, 0x00
core.conn.bcn_filt_ie21.type = 0x00
core.conn.bcn_filt_ie21.version = 0x00, 0x00
core.conn.bcn_filt_ie22.ie = 0x00
core.conn.bcn_filt_ie22.rule = 0x00
core.conn.bcn_filt_ie22.oui = 0x00, 0x00, 0x00
core.conn.bcn_filt_ie22.type = 0x00
core.conn.bcn_filt_ie22.version = 0x00, 0x00
core.conn.bcn_filt_ie23.ie = 0x00
core.conn.bcn_filt_ie23.rule = 0x00
core.conn.bcn_filt_ie23.oui = 0x00, 0x00, 0x00
core.conn.bcn_filt_ie23.type = 0x00
core.conn.bcn_filt_ie23.version = 0x00, 0x00
core.conn.bcn_filt_ie24.ie = 0x00
core.conn.bcn_filt_ie24.rule = 0x00
core.conn.bcn_filt_ie24.oui = 0x00, 0x00, 0x00
core.conn.bcn_filt_ie24.type = 0x00
core.conn.bcn_filt_ie24.version = 0x00, 0x00
core.conn.bcn_filt_ie25.ie = 0x00
core.conn.bcn_filt_ie25.rule = 0x00
core.conn.bcn_filt_ie25.oui = 0x00, 0x00, 0x00
core.conn.bcn_filt_ie25.type = 0x00
core.conn.bcn_filt_ie25.version = 0x00, 0x00
core.conn.bcn_filt_ie26.ie = 0x00
core.conn.bcn_filt_ie26.rule = 0x00
core.conn.bcn_filt_ie26.oui = 0x00, 0x00, 0x00
core.conn.bcn_filt_ie26.type = 0x00
core.conn.bcn_filt_ie26.version = 0x00, 0x00
core.conn.bcn_filt_ie27.ie = 0x00
core.conn.bcn_filt_ie27.rule = 0x00
core.conn.bcn_filt_ie27.oui = 0x00, 0x00, 0x00
core.conn.bcn_filt_ie27.type = 0x00
core.conn.bcn_filt_ie27.version = 0x00, 0x00
core.conn.bcn_filt_ie28.ie = 0x00
core.conn.bcn_filt_ie28.rule = 0x00
core.conn.bcn_filt_ie28.oui = 0x00, 0x00, 0x00
core.conn.bcn_filt_ie28.type = 0x00
core.conn.bcn_filt_ie28.version = 0x00, 0x00
core.conn.bcn_filt_ie29.ie = 0x00
core.conn.bcn_filt_ie29.rule = 0x00
core.conn.bcn_filt_ie29.oui = 0x00, 0x00, 0x00
core.conn.bcn_filt_ie29.type = 0x00
core.conn.bcn_filt_ie29.version = 0x00, 0x00
core.conn.bcn_filt_ie30.ie = 0x00
core.conn.bcn_filt_ie30.rule = 0x00
core.conn.bcn_filt_ie30.oui = 0x00, 0x00, 0x00
core.conn.bcn_filt_ie30.type = 0x00
core.conn.bcn_filt_ie30.version = 0x00, 0x00
core.conn.bcn_filt_ie31.ie = 0x00
core.conn.bcn_filt_ie31.rule = 0x00
core.conn.bcn_filt_ie31.oui = 0x00, 0x00, 0x00
core.conn.bcn_filt_ie31.type = 0x00
core.conn.bcn_filt_ie31.version = 0x00, 0x00
core.conn.synch_fail_thold = 0x0000000c
core.conn.bss_lose_timeout = 0x00000190
core.conn.beacon_rx_timeout = 0x00002710
core.conn.broadcast_timeout = 0x00004e20
core.conn.rx_broadcast_in_ps = 0x01
core.conn.ps_poll_threshold = 0x0a
core.conn.sig_weights.rssi_bcn_avg_weight = 0x00
core.conn.sig_weights.rssi_pkt_avg_weight = 0x00
core.conn.sig_weights.snr_bcn_avg_weight = 0x00
core.conn.sig_weights.snr_pkt_avg_weight = 0x00
core.conn.bet_enable = 0x01
core.conn.bet_max_consecutive = 0x32
core.conn.psm_entry_retries = 0x08
core.conn.psm_exit_retries = 0x10
core.conn.psm_entry_nullfunc_retries = 0x03
core.conn.dynamic_ps_timeout = 0x0096
core.conn.forced_ps = 0x00
core.conn.keep_alive_interval = 0x0000d6d8
core.conn.max_listen_interval = 0x14
core.conn.sta_sleep_auth = 0xff
core.conn.suspend_rx_ba_activity = 0x00
core.itrim.enable = 0x00
core.itrim.timeout = 0x0000c350
core.pm_config.host_clk_settling_time = 0x00001388
core.pm_config.host_fast_wakeup_support = 0x01
core.roam_trigger.trigger_pacing = 0x0001
core.roam_trigger.avg_weight_rssi_beacon = 0x14
core.roam_trigger.avg_weight_rssi_data = 0x0a
core.roam_trigger.avg_weight_snr_beacon = 0x14
core.roam_trigger.avg_weight_snr_data = 0x0a
core.scan.min_dwell_time_active = 0x00001d4c
core.scan.max_dwell_time_active = 0x00007530
core.scan.min_dwell_time_active_long = 0x000061a8
core.scan.max_dwell_time_active_long = 0x0000c350
core.scan.dwell_time_passive = 0x000186a0
core.scan.dwell_time_dfs = 0x000249f0
core.scan.num_probe_reqs = 0x0002
core.scan.split_scan_timeout = 0x0000c350
core.sched_scan.base_dwell_time = 0x00001d4c
core.sched_scan.max_dwell_time_delta = 0x000057e4
core.sched_scan.dwell_time_delta_per_probe = 0x000007d0
core.sched_scan.dwell_time_delta_per_probe_5 = 0x0000015e
core.sched_scan.dwell_time_passive = 0x000186a0
core.sched_scan.dwell_time_dfs = 0x000249f0
core.sched_scan.num_probe_reqs = 0x02
core.sched_scan.rssi_threshold = 0xa6
core.sched_scan.snr_threshold = 0x00
core.sched_scan.num_short_intervals = 0x0d
core.sched_scan.long_interval = 0x7530
core.ht.rx_ba_win_size = 0x20
core.ht.tx_ba_win_size = 0x40
core.ht.inactivity_timeout = 0x2710
core.ht.tx_ba_tid_bitmap = 0x3f
core.mem.num_stations = 0x01
core.mem.ssid_profiles = 0x01
core.mem.rx_block_num = 0x28
core.mem.tx_min_block_num = 0x28
core.mem.dynamic_memory = 0x01
core.mem.min_req_tx_blocks = 0x2d
core.mem.min_req_rx_blocks = 0x16
core.mem.tx_min = 0x1b
core.fm_coex.enable = 0x01
core.fm_coex.swallow_period = 0x05
core.fm_coex.n_divider_fref_set_1 = 0xff
core.fm_coex.n_divider_fref_set_2 = 0x0c
core.fm_coex.m_divider_fref_set_1 = 0xffff
core.fm_coex.m_divider_fref_set_2 = 0x0094
core.fm_coex.coex_pll_stabilization_time = 0xffffffff
core.fm_coex.ldo_stabilization_time = 0xffff
core.fm_coex.fm_disturbed_band_margin = 0xff
core.fm_coex.swallow_clk_diff = 0xff
core.rx_streaming.duration = 0x00000096
core.rx_streaming.queues = 0x01
core.rx_streaming.interval = 0x14
core.rx_streaming.always = 0x00
core.fwlog.mode = 0x00
core.fwlog.mem_blocks = 0x02
core.fwlog.severity = 0x00
core.fwlog.timestamp = 0x00
core.fwlog.output = 0x01
core.fwlog.threshold = 0x00
core.rate.rate_retry_score = 0x7d00
core.rate.per_add = 0x2000
core.rate.per_th1 = 0x0800
core.rate.per_th2 = 0x1000
core.rate.max_per = 0x1fa4
core.rate.inverse_curiosity_factor = 0x05
core.rate.tx_fail_low_th = 0x04
core.rate.tx_fail_high_th = 0x0a
core.rate.per_alpha_shift = 0x04
core.rate.per_add_shift = 0x0d
core.rate.per_beta1_shift = 0x0a
core.rate.per_beta2_shift = 0x08
core.rate.rate_check_up = 0x02
core.rate.rate_check_down = 0x0c
core.rate.rate_retry_policy = 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
core.hangover.recover_time = 0x00000000
core.hangover.hangover_period = 0x14
core.hangover.dynamic_mode = 0x01
core.hangover.early_termination_mode = 0x01
core.hangover.max_period = 0x14
core.hangover.min_period = 0x01
core.hangover.increase_delta = 0x01
core.hangover.decrease_delta = 0x02
core.hangover.quiet_time = 0x04
core.hangover.increase_time = 0x01
core.hangover.window_size = 0x10
core.recovery.bug_on_recovery = 0x00
core.recovery.no_recovery = 0x00
wl18xx.ht.mode = 0x01
wl18xx.phy.phy_standalone = 0x00
wl18xx.phy.spare0 = 0x08
wl18xx.phy.enable_clpc = 0x00
wl18xx.phy.enable_tx_low_pwr_on_siso_rdl = 0x00
wl18xx.phy.auto_detect = 0x00
wl18xx.phy.dedicated_fem = 0x00
wl18xx.phy.low_band_component = 0x02
wl18xx.phy.low_band_component_type = 0x05
wl18xx.phy.high_band_component = 0x01
wl18xx.phy.high_band_component_type = 0x09
wl18xx.phy.number_of_assembled_ant2_4 = 0x01
wl18xx.phy.number_of_assembled_ant5 = 0x00
wl18xx.phy.pin_muxing_platform_options = 0x00, 0x00
wl18xx.phy.external_pa_dc2dc = 0x00
wl18xx.phy.tcxo_ldo_voltage = 0x00
wl18xx.phy.xtal_itrim_val = 0x04
wl18xx.phy.srf_state = 0x00
wl18xx.phy.srf1 = 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
wl18xx.phy.srf2 = 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
wl18xx.phy.srf3 = 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
wl18xx.phy.io_configuration = 0x01
wl18xx.phy.sdio_configuration = 0x00
wl18xx.phy.settings = 0x00
wl18xx.phy.rx_profile = 0x00
wl18xx.phy.per_chan_pwr_limit_arr_11abg = 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x2f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf2, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
wl18xx.phy.pwr_limit_reference_11_abg = 0x64
wl18xx.phy.per_chan_pwr_limit_arr_11p = 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
wl18xx.phy.pwr_limit_reference_11p = 0x64
wl18xx.phy.spare1 = 0x00
wl18xx.phy.per_chan_bo_mode_11_abg = 0x40, 0x00, 0x04, 0x70, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18
wl18xx.phy.per_chan_bo_mode_11_p = 0x00, 0x00, 0x00, 0x00
wl18xx.phy.primary_clock_setting_time = 0x05
wl18xx.phy.clock_valid_on_wake_up = 0x00
wl18xx.phy.secondary_clock_setting_time = 0x05
wl18xx.phy.board_type = 0x02
wl18xx.phy.psat = 0x00
wl18xx.phy.low_power_val = 0xff
wl18xx.phy.med_power_val = 0xff
wl18xx.phy.high_power_val = 0xff
wl18xx.phy.per_sub_band_tx_trace_loss = 0x10, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
wl18xx.phy.per_sub_band_rx_trace_loss = 0x10, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
wl18xx.phy.tx_rf_margin = 0x01
wl18xx.phy.low_power_val_2nd = 0xff
wl18xx.phy.med_power_val_2nd = 0xff
wl18xx.phy.high_power_val_2nd = 0xff
wl18xx.phy.padding = 0x00
wl18xx.ap_sleep.idle_duty_cycle = 0x00
wl18xx.ap_sleep.connected_duty_cycle = 0x00
wl18xx.ap_sleep.max_stations_thresh = 0x04
wl18xx.ap_sleep.idle_conn_thresh = 0x08

  • 0 in reply to Eric Dahlseng
    TI__Mastermind 20285 points

    Hi Eric,

    A 1831 based module is a single 2.4Ghz wifi antenna based, so it doesn;t support MIMO.

    This is the main difference between the 1831 based module and 1835 based one.

    Also according to tour your dump file, conf file is set as such (configured to one assembled antenna), which matches your module:

    wl18xx.phy.number_of_assembled_ant2_4 = 0x01

    With only a single antenna the throughput you are getting is (around 40MBPs) does look reasonable in open air.

    You may be able to get up to around 60Mbps in SISO in case you use a "clean" room.

    Hope this helps.

    Best Regards,

    Eyal

  • 0 in reply to Eyal Reizer
    Prodigy 70 points

    Hi Eyal,

    Thanks for the clarifications. It's good to know that we are getting reasonable throughputs. My original concern was that the throughput wasn't matching what's displayed with iw wlan0 link, but after your previous explanation about that command, that's no longer a concern.

    I'm still confused, however, as to why our download speeds are as slow as they are. With 40 Mbits/s, I would expect a 100 MB file to download in about 20 seconds. We're still seeing download speeds of closer to a minute, though, which doesn't add up. Any thoughts on this?

    Thanks,

    Eric

  • 0 in reply to Eric Dahlseng
    TI__Mastermind 20285 points

    Hi Eric,

    When you are doing file download test you are not just checking your wifi link but rather the entire system.

    Your system is probably reading chucks from storage and sending them over the network stack to the wlan interface.

    This is probably the reason it taken longer the your pure iperf test.

    If you have any control over the "chunk size" that is being sent with each packet and can increase it you would probably increase you overall throughput.

    BR,

    Eyal

  • 0 in reply to Eyal Reizer
    Prodigy 70 points

    Hi Eyal,

    During testing today we ran into the following errors. What causes these? Are these normal to see, or is there a fix?

    [ 1998.117170] wlcore: WARNING corrupted packet in RX: status: 0x1 len: 393
[ 2012.079448] wlcore: WARNING corrupted packet in RX: status: 0x1 len: 100
[ 2013.146517] wlcore: WARNING corrupted packet in RX: status: 0x1 len: 100
[ 2024.310514] wlcore: WARNING corrupted packet in RX: status: 0x1 len: 100
[ 2028.199027] wlcore: WARNING corrupted packet in RX: status: 0x1 len: 393
[ 2035.182451] wlcore: WARNING corrupted packet in RX: status: 0x1 len: 100
[ 2038.190196] wlcore: WARNING corrupted packet in RX: status: 0x1 len: 100

    (I'll also get back to you on the progress of the download speeds after running some more tests)

    Thanks,

    Eric