Wi-Fi Bluetooth for Linux Forum Discussions

Hi,

We are manufacturing a product using raspberry pi 4 as host MCU board. The product is undergoing FCC and CE ESTI certification process. We need a MFG firmware and the correct WL tools to perform a "Fixed Frequency Radio Test". Please help us to obtain such firmware and software tool at your earliest convenience. 

Thank you and with best regards

Cooper

I'm currently running version 7.45.206 of the brcmfmac43455-sdio firmware (release v5.4.18-2020_0402 reporting a date of Mar 23, 2020) on a Raspberry Pi 4B as part of the latest release of OpenWrt (21.02.1) configured as a dumb AP, and they don't seem to have plans in the near future to update to the latest released firmware for the CYW43455, which seems to be 7.45.234 (2021_0520 release).  Were any security vulnerabilities patched in the brcmfmac43455-sdio firmware versions released after 7.45.206?  My main concern is for the security of my network running the older firmware so any comments or suggestions to help me decide would be appreciated.

And would it make sense to try upgrading the firmware myself, or might there be incompatibilities with OpenWrt between the latest version and the one I'm running?  I'm not sure how compatible the two versions are (7.45.206 vs. 7.45.234) from the perspective of the driver/OS.  Is the upgrade process just a matter of replacing the firmware files in /lib/firmware/brcm with newer ones?

Thanks in advance for your time!

Hi all,

We are working on integrating the Wi-Fi & Bluetooth driver for Linux in our platform. For that we are using the reference software package "Infineon-cypress-fmac-v5.4.18-2021_0527.zip-Software-v01_00-EN.zip" , however we are having several issues on that process. This software package is based on a kernel version v5.4.18, however the patch series doesn't apply cleanly on a more recent kernel version from the base branch v5.4.X (In our case we are working with v5.4.84 ). Some patches were uploaded to upstream with a different content than the original patch provided in this software package and then now we are having many conflicts applying the patches from this software package in a most recent Linux kernel v5.4.X

Is there any software package based on a most recent Linux kernel version v5.4?

Thanks in advance,

Arturo

Is there a possibility to use roaming feature with  wpa_supplicant? 

In our test environment we are using two APs configured with same ssid,password. Both ssids are in the same band, only thing which is different is that the APs are set to use different channels (e.g 1 and 5).

We've tried roaming with wpa_supplicant,  with set roam_off = 1 and also roam_off=0. In those cases roaming is not working , device is switched from one AP to another using 4-way handshake. 

If roaming parameters are set using wl tool (band,delta,scan_period,roam_trigger) and roam_off = 0 we can see that device is switching without 4-way handshake.  As I understand in that case internal roaming is performed. 

I've followed this topic which is similar to this question :https://community.infineon.com/t5/Wi-Fi-Combo/11R-Fast-Roaming-support-on-CYW43455/m-p/121621  but with there's no progress so far. 

Is there anything that should be enabled/disabled in fw, or some patch that should be added to wpa_supplicant to be able to do roaming? If so could you provide us with it?

wl version is 1.26 RC0.0

wpa_supplicant version is 2.9.

I'm trying to test cypress-fmac-v5.10.9-2021_1020.zip in my environment (imx6sx-sdb/SDIO Adapter CYW9SDIOAD/WiFi module CYW43455).
When linux v5.10.9, usdhc3 (mmc2) of imx6sx-sdb does not recognize SDIO.
If SD card, it is recognized .

If linux v5.4.x, the below boot message is displayed at the boot time without any problem, and it connects to WiFi module normally.
    mmc2: new high speed SDIO card at address 0001

Somebody help me?

Hello,

with reference to thread 

"https://community.infineon.com/t5/Wi-Fi-Bluetooth-for-Linux/Murata-s-LBWA1KL1FX-875-Wi-Fi-part-Linux-driver-for-TI-s-AM3351/m-p/322313#M2152"

we have changed the code as per the explanation provided,

we have tried the same with CYW43455, it worked well then we changed the chip to CYW43364, and facing the issue, we have done the HW changes to the board, attaching here the dmeg for reference, any quick help or guidance will be helpful.

PS: created new thread as previous not allowing to reply.

Thanks,

Mohammed 

Hi，experts 

we use wifi driver cypress-fmac-v5.4.18-2021_0527.zip for AW-NM372SM(chipset is CYW43438) . This wifi driver downloaded form https://www.cypress.com/documentation/software-and-drivers-archive/wifi-bt-linux-archive.

Our linux version is v3.10.108.

we encountered an uncommon WiFi driver oops，as below：

[ 09:20:23][224389.020000] ios->clock=400000
[ 09:20:23]#######ping failure,time is 2021-11-08 09:20:56,The total_count is 174936,failure_count is 19528########
[ 09:20:23][224389.370000] ios->clock=400000
[ 09:20:23][224389.370000] ios->clock=400000
[ 09:20:23][224389.540000] ios->clock=400000
[ 09:20:23][224389.560000] mmc0: queuing unknown CIS tuple 0x80 (2 bytes)
[ 09:20:23][224389.560000] mmc0: queuing unknown CIS tuple 0x80 (3 bytes)
[ 09:20:23][224389.570000] mmc0: queuing unknown CIS tuple 0x80 (3 bytes)
[ 09:20:23][224389.580000] mmc0: queuing unknown CIS tuple 0x80 (7 bytes)
[ 09:20:23][224389.590000] mmc0: queuing unknown CIS tuple 0x81 (1 bytes)
[ 09:20:24][224389.780000] ios->clock=400000
[ 09:20:24][224389.780000] ios->clock=50000000
[ 09:20:24][224389.780000] ios->clock=50000000
[ 09:20:24][224389.790000] mmc0: new high speed SDIO card at address 0001
[ 09:20:24][224389.800000] brcmf_chip_recognition found AXI chip: BCM43430/1
[ 09:20:24][224389.840000] brcmf_chip_cores_check [1 ] core 0x800:49 base 0x18000000 wrap 0x18100000
[ 09:20:24][224389.880000] brcmf_chip_cores_check [2 ] core 0x812:39 base 0x18001000 wrap 0x18101000
[ 09:20:24][224389.920000] brcmf_chip_cores_check [3 ] core 0x829:21 base 0x18002000 wrap 0x18102000
[ 09:20:24][224389.920000] brcmf_chip_cores_check [4 ] core 0x82a:9 base 0x18003000 wrap 0x18103000
[ 09:20:24][224389.950000] brcmf_chip_cores_check [5 ] core 0x80e:22 base 0x18004000 wrap 0x18104000
[ 09:20:24][224389.950000] brcmf_chip_cores_check [6 ] core 0x135:0 base 0x00000000 wrap 0x18105000
[ 09:20:24][224389.970000] brcmf_chip_cores_check [7 ] core 0x240:0 base 0x00000000 wrap 0x18106000
[ 09:20:24][224390.000000] brcmf_chip_get_raminfo RAM: base=0x0 size=524288 (0x80000) sr=65536 (0x10000)
[ 09:20:24][224390.010000] brcmf_chip_setup ccrev=49, pmurev=24, pmucaps=0x39d25f18
[ 09:20:24][224390.010000] brcmf_get_module_param Enter, bus=0, chip=43430, rev=1
[ 09:20:24][224390.020000] brcmf_sdio_drivestrengthinit No SDIO driver strength init needed for chip BCM43430/1 rev 1 pmurev 24
[ 09:20:24][224390.030000] brcmf_sdio_probe completed!!
[ 09:20:24][224390.030000] brcmfmac: brcmf_fw_alloc_request: using cypress/cyfmac43430-sdio for chip BCM43430/1
[ 09:20:24][224390.090000] brcmf_sdio_verifymemory Compare RAM dl & ul at 0x00000000; size=419798
[ 09:20:24][224390.180000] brcmf_sdio_verifymemory Compare RAM dl & ul at 0x0007fda0; size=608
[ 09:20:24][224390.310000] brcmf_sdio_firmware_callback enable F2: err=0
[ 09:20:24][224390.310000] brcmf_sdio_sr_init SR enabled
[ 09:20:24][224390.330000] brcmf_bus_change_state ignoring transition, bus not attached yet
[ 09:20:24][224390.340000] brcmf_sdio_readshared sdpcm_shared address 0x000469C0
[ 09:20:24][224390.360000] brcmf_sdio_readshared sdpcm_shared address 0x000469C0
[ 09:20:24][224390.360000] ------------[ cut here ]------------
[ 09:20:24][224390.360000] Kernel BUG at c0028590 [verbose debug info unavailable]
[ 09:20:24][224390.360000] Internal error: Oops - BUG: 0 [#1] PREEMPT ARM
[ 09:20:24][224390.360000] Modules linked in: qmi_wwan option brcmfmac(O) brcmutil(O) cfg80211(O) compat(O) usb_f_rndis u_ether usb_f_fs libcomposite usb_wwan watchdogd(O)
[ 09:20:24][224390.360000] CPU: 0 PID: 4308 Comm: kworker/0:1 Tainted: G O 3.10.108 #2
[ 09:20:24][224390.360000] Workqueue: events request_firmware_work_func
[ 09:20:24][224390.360000] task: c3898b00 ti: c19d6000 task.ti: c19d6000
[ 09:20:24][224390.360000] PC is at add_timer+0x18/0x28
[ 09:20:24][224390.360000] LR is at brcmf_sdio_wd_timer+0x80/0x418 [brcmfmac]
[ 09:20:24][224390.360000] pc : [<c0028590>] lr : [<bf09ad60>] psr: a0000013
[ 09:20:24][224390.360000] sp : c19d7e10 ip : c19d7e20 fp : c19d7e1c
[ 09:20:24][224390.360000] r10: 00000001 r9 : 00000000 r8 : 00000000
[ 09:20:24][224390.360000] r7 : 00000000 r6 : c15fcb48 r5 : c1a819e4 r4 : c1a81800
[ 09:20:24][224390.360000] r3 : 0155ef4c r2 : c1635178 r1 : 00000014 r0 : c1a819e4
[ 09:20:24][224390.360000] Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel
[ 09:20:24][224390.360000] Control: 0005317f Table: 01004000 DAC: 00000017
[ 09:20:24][224390.360000] Process kworker/0:1 (pid: 4308, stack limit = 0xc19d61b8)
[ 09:20:24][224390.360000] Stack: (0xc19d7e10 to 0xc19d8000)
[ 09:20:24][224390.360000] 7e00: c19d7e3c c19d7e20 bf09ad60 c0028588
[ 09:20:24][224390.360000] 7e20: c1a80400 c1a81800 bf0a3b3c 00000000 c19d7e94 c19d7e40 bf09e46c bf09acf0
[ 09:20:24][224390.360000] 7e40: 00000260 00000000 00000000 00000002 c227b980 00000006 c102f108 00000000
[ 09:20:24][224390.360000] 7e60: 00000379 00000000 c01bdb54 c1ae61e0 c19d7e9c c227b1c0 00000000 00000000
[ 09:20:24][224390.360000] 7e80: c19d6000 00000000 c19d7ec4 c19d7e98 bf092380 bf09dcd4 c19d7ecc c1ae61c0
[ 09:20:24][224390.360000] 7ea0: c227b240 c227b240 c227b240 c15fd068 00000000 c16d0c00 c19d7eec c19d7ec8
[ 09:20:24][224390.360000] 7ec0: c01bdc70 bf092334 00000001 c15fd850 c1a46840 c1ae61a0 c15fd068 c1a46840
[ 09:20:24][224390.360000] 7ee0: c19d7f2c c19d7ef0 c0032c60 c01bdc40 c15fd068 c1a46840 c15fd068 c19d6000
[ 09:20:24][224390.360000] 7f00: c15fd068 c1a46840 c15fd068 c19d6000 c1a46858 c15fd078 00000000 00000000
[ 09:20:24][224390.360000] 7f20: c19d7f64 c19d7f30 c0033b88 c0032a70 00000000 c1a46840 c003398c c18c5e7c
[ 09:20:24][224390.360000] 7f40: 00000000 c1a46840 c003398c 00000000 00000000 00000000 c19d7fac c19d7f68
[ 09:20:24][224390.360000] 7f60: c0038fcc c003399c c19d7f94 00000000 c0040a90 c1a46840 00000000 c19d7f7c
[ 09:20:24][224390.360000] 7f80: c19d7f7c 00000000 c19d7f88 c19d7f88 c18c5e7c c0038f18 00000000 00000000
[ 09:20:24][224390.360000] 7fa0: 00000000 c19d7fb0 c000e1f8 c0038f28 00000000 00000000 00000000 00000000
[ 09:20:24][224390.360000] 7fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 09:20:24][224390.360000] 7fe0: 00000000 00000000 00000000 00000000 00000013 00000000 e282200c eaffffd8
[ 09:20:24][224390.360000] Backtrace:
[ 09:20:24][224390.360000] [<c0028578>] (add_timer+0x0/0x28) from [<bf09ad60>] (brcmf_sdio_wd_timer+0x80/0x418 [brcmfmac])
[ 09:20:24][224390.360000] [<bf09ace0>] (brcmf_sdio_wd_timer+0x0/0x418 [brcmfmac]) from [<bf09e46c>] (brcmf_sdio_firmware_callback+0x7a8/0x94c [brcmfmac])
[ 09:20:24][224390.360000] r7:00000000 r6:bf0a3b3c r5:c1a81800 r4:c1a80400
[ 09:20:24][224390.360000] [<bf09dcc4>] (brcmf_sdio_firmware_callback+0x0/0x94c [brcmfmac]) from [<bf092380>] (brcmf_fw_request_done+0x5c/0xe0 [brcmfmac])
[ 09:20:24][224390.360000] [<bf092324>] (brcmf_fw_request_done+0x0/0xe0 [brcmfmac]) from [<c01bdc70>] (request_firmware_work_func+0x40/0x60)
[ 09:20:24][224390.360000] r8:c16d0c00 r7:00000000 r6:c15fd068 r5:c227b240 r4:c227b240
[ 09:20:24][224390.360000] [<c01bdc30>] (request_firmware_work_func+0x0/0x60) from [<c0032c60>] (process_one_work+0x200/0x350)
[ 09:20:24][224390.360000] r4:c1a46840
[ 09:20:24][224390.360000] [<c0032a60>] (process_one_work+0x0/0x350) from [<c0033b88>] (worker_thread+0x1fc/0x3a0)
[ 09:20:24][224390.360000] [<c003398c>] (worker_thread+0x0/0x3a0) from [<c0038fcc>] (kthread+0xb4/0xc0)
[ 09:20:24][224390.360000] [<c0038f18>] (kthread+0x0/0xc0) from [<c000e1f8>] (ret_from_fork+0x14/0x3c)
[ 09:20:24][224390.360000] r7:00000000 r6:00000000 r5:c0038f18 r4:c18c5e7c
[ 09:20:24][224390.360000] Code: e24cb004 e5902000 e3520000 0a000000 (e7f001f2)
[ 09:20:25][224390.360000] ---[ end trace d888266c12f52e94 ]---
[ 09:20:25][224390.360000] Kernel panic - not syncing: Fatal exception
[ 09:20:26][224390.360000] Rebooting in 5 seconds..
[ 09:20:26]NUC970 IBR 20151008.1735
[ 09:20:26]No Key
[ 09:20:26]Boot from SPI
[ 09:20:26]
[ 09:20:26]
[ 09:20:26]U-Boot 3.0.0 (Sep 24 2020 - 16:25:28)
[ 09:20:26]
[ 09:20:26]CPU: NUC976
[ 09:20:26]DRAM: 64 MiB

。。。

Any help would be appreciated.

Hi,

Problem Statement: 

Transmit and Receive are blocked after a certain time in Broadcom devices whenever Quiet IE Element (40) is enabled and broadcasted in the beacon. The issue exists even when we disable RRM and Spectrum Management features. 

We tried to ping from Broadcom device to a server and we can see that the ping fails and nothing is seen on-air after a certain time.

Device Details:

AP Details:

AP WLAN Profile Details:

Quite IE in AP Beacon:

Event Logs:

From the logs, we can observe that the ping stops at the point(can be found in the Wireshark capture) when we received only QUIET_START(event:13) and didn't receive QUIET_END(event:14).

Below is the event in the log file where only the QUIET_START event was received and no QUIET_END event was received thereafter and at the same time we observed Ping stopped in the packet capture.

2021-07-28T17:52:00.175481+00:00 SAMA5D2C3 kernel: [ 1484.040000] brcmfmac: brcmf_fweh_process_event: event nodebug (13)

Packet Capture Details:

1. In the Wireshark capture, you can use the following filter to extract the packets to look after:

(wlan.ssid == aruba5 && wlan.fc.type_subtype == 8 && wlan.bssid == 34:fc:b9:4c:d9:c6) || wlan.addr==e8:e8:b7:09:52:17

2. Ping stops from packet 340421 and transmission stop from packet 340566

Hello Everyone,

I am running android on imx7d from NXP running Bluetooth+Wifi 1MW module.

I want to run a Bluetooth SPP server on the device. I have implemented the software in C++, Basically an RFCOMM socket. I read Android used Bluedroid instead of Bluez like Linux. But I understand the RFCOMM socket creation method is the same(not 100% sure).

I run the C++ based server software on the imx7d device, it doesn't give any issue creating the RFCOMM SPP port. It creates the port and goes into listening mode. However, when the Android Bluetooth client app running on my phone tries to connect it, It gives the following error in the android bt stack of my imx7d based device.

> [INFO:port_utils.cc(329)] port_find_mcb_dlci_port: Cannot find
> allocated RFCOMM app port for DLCI 40 on 3c:28:6d:2a:b0:28,
> p_mcb=0x90367c24 PORT_ParNegInd dlci:40 mtu:990 2021-11-26
> 09:04:36.046 583-827/com.android.bluetooth E/bt_stack:
> [ERROR:port_rfc.cc(285)] PORT_ParNegInd: Disconnect RFCOMM, port not
> found, dlci=40, p_mcb=0x90367c24, bd_addr=3c:28:6d:2a:b0:28

I have created the server port on channel 20, but it's not able to find it. I am not sure what exactly is going wrong, I am stuck and not able to find the way to move ahead. Here is the code snippet.

#define BTPROTO_RFCOMM 3

/* BD Address */ typedef struct {
uint8_t b[6]; } __attribute__((packed)) bdaddr_t;

/* ---- RFCOMM sockets ---- */ struct sockaddr_rc {
sa_family_t rc_family;
bdaddr_t rc_bdaddr;
uint8_t rc_channel; };

#define BDADDR_ANY (&(bdaddr_t){{0, 0, 0, 0, 0, 0}})

/* server channel */
#define RFCOMM_SERVER_PORT_NUM 20

void BluetoothSerialPort::openConnection()
{
struct sockaddr_rc loc_addr;
bdaddr_t bdaddr_any = {0, 0, 0, 0, 0, 0};
ALOGE("Start Bluetooth SPP server...\n");

/* allocate socket */
sockFd_ = socket(AF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM);
if (sockFd_ < 0)
{
ALOGE("Cannot start Bluetooth SPP server\n");
}
memset(&loc_addr, 0, sizeof(loc_addr));
loc_addr.rc_family = AF_BLUETOOTH;
loc_addr.rc_bdaddr = bdaddr_any;
loc_addr.rc_channel = RFCOMM_SERVER_PORT_NUM;

if (bind(sockFd_, (struct sockaddr *)&loc_addr, sizeof(loc_addr)) < 0)
{
ALOGE("socket bind error %s", strerror(errno));
exit(EXIT_FAILURE);
}

ALOGE("Listen Bluetooth SPP server on %d...\n", sockFd_);
if (listen(sockFd_, 2) < 0)
{
ALOGE("socket listen error %s", strerror(errno));
exit(EXIT_FAILURE);
}
}

// Runs the server.
void BluetoothSerialPort::run()
{
struct sockaddr_rc client_addr;
socklen_t opt = sizeof(client_addr);
openConnection();
ALOGE("Listening on Bluetooth SPP server = %d...\n", sockFd_);
/* return new socket for connection with a client */
clientFd_ = accept(sockFd_, reinterpret_cast<struct sockaddr *>(&client_addr), &opt);
ALOGE("connected from %s\n", (char *)&client_addr.rc_bdaddr);
if (clientFd_ == -1)
{
ALOGE("error accepting incoming connection: %s", strerror(errno));
}
else
{

ALOGI("got new connection");
}

// Create a thread and transfer the new stream to it.
std::thread thr(std::bind(&BluetoothSerialPort::readHandler, this));
thr.detach();
}

Can somebody please help? Is there any mistake in the code, it prints the following line "Listening on Bluetooth SPP server" and goes into listening mode.

Thanks much,
Asma