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Filename Latest commit message Latest commit date
Hsin-Yu Chao 5c79bf440d Bluetooth: Add SCO fallback for invalid LMP parameters error 
[ Upstream commit 56b5453a86203a44726f523b4133c1feca49ce7c ]

Bluetooth PTS test case HFP/AG/ACC/BI-12-I accepts SCO connection
with invalid parameter at the first SCO request expecting AG to
attempt another SCO request with the use of "safe settings" for
given codec, base on section 5.7.1.2 of HFP 1.7 specification.

This patch addresses it by adding "Invalid LMP Parameters" (0x1e)
to the SCO fallback case. Verified with below log:

< HCI Command: Setup Synchronous Connection (0x01|0x0028) plen 17
        Handle: 256
        Transmit bandwidth: 8000
        Receive bandwidth: 8000
        Max latency: 13
        Setting: 0x0003
          Input Coding: Linear
          Input Data Format: 1's complement
          Input Sample Size: 8-bit
          # of bits padding at MSB: 0
          Air Coding Format: Transparent Data
        Retransmission effort: Optimize for link quality (0x02)
        Packet type: 0x0380
          3-EV3 may not be used
          2-EV5 may not be used
          3-EV5 may not be used
> HCI Event: Command Status (0x0f) plen 4
      Setup Synchronous Connection (0x01|0x0028) ncmd 1
        Status: Success (0x00)
> HCI Event: Number of Completed Packets (0x13) plen 5
        Num handles: 1
        Handle: 256
        Count: 1
> HCI Event: Max Slots Change (0x1b) plen 3
        Handle: 256
        Max slots: 1
> HCI Event: Synchronous Connect Complete (0x2c) plen 17
        Status: Invalid LMP Parameters / Invalid LL Parameters (0x1e)
        Handle: 0
        Address: 00:1B:DC:F2:21:59 (OUI 00-1B-DC)
        Link type: eSCO (0x02)
        Transmission interval: 0x00
        Retransmission window: 0x02
        RX packet length: 0
        TX packet length: 0
        Air mode: Transparent (0x03)
< HCI Command: Setup Synchronous Connection (0x01|0x0028) plen 17
        Handle: 256
        Transmit bandwidth: 8000
        Receive bandwidth: 8000
        Max latency: 8
        Setting: 0x0003
          Input Coding: Linear
          Input Data Format: 1's complement
          Input Sample Size: 8-bit
          # of bits padding at MSB: 0
          Air Coding Format: Transparent Data
        Retransmission effort: Optimize for link quality (0x02)
        Packet type: 0x03c8
          EV3 may be used
          2-EV3 may not be used
          3-EV3 may not be used
          2-EV5 may not be used
          3-EV5 may not be used
> HCI Event: Command Status (0x0f) plen 4
      Setup Synchronous Connection (0x01|0x0028) ncmd 1
        Status: Success (0x00)
> HCI Event: Max Slots Change (0x1b) plen 3
        Handle: 256
        Max slots: 5
> HCI Event: Max Slots Change (0x1b) plen 3
        Handle: 256
        Max slots: 1
> HCI Event: Synchronous Connect Complete (0x2c) plen 17
        Status: Success (0x00)
        Handle: 257
        Address: 00:1B:DC:F2:21:59 (OUI 00-1B-DC)
        Link type: eSCO (0x02)
        Transmission interval: 0x06
        Retransmission window: 0x04
        RX packet length: 30
        TX packet length: 30
        Air mode: Transparent (0x03)

Signed-off-by: Hsin-Yu Chao <hychao@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-06-22 09:30:54 +02:00
arch MIPS: Loongson: Build ATI Radeon GPU driver as module 2020-06-22 09:30:54 +02:00
block block: reset mapping if failed to update hardware queue count 2020-06-22 09:30:53 +02:00
certs
crypto crypto: drbg - fix error return code in drbg_alloc_state() 2020-06-17 16:40:31 +02:00
Documentation lib/lzo: fix ambiguous encoding bug in lzo-rle 2020-06-17 16:40:28 +02:00
drivers platform/x86: dell-laptop: don't register micmute LED if there is no token 2020-06-22 09:30:53 +02:00
fs fat: don't allow to mount if the FAT length == 0 2020-06-17 16:40:36 +02:00
include dccp: Fix possible memleak in dccp_init and dccp_fini 2020-06-17 16:40:32 +02:00
init
ipc
kernel sched/fair: Refill bandwidth before scaling 2020-06-22 09:30:51 +02:00
lib lib/lzo: fix ambiguous encoding bug in lzo-rle 2020-06-17 16:40:28 +02:00
LICENSES
mm mm/slub: fix a memory leak in sysfs_slab_add() 2020-06-17 16:40:36 +02:00
net Bluetooth: Add SCO fallback for invalid LMP parameters error 2020-06-22 09:30:54 +02:00
samples
scripts
security lockdown: Allow unprivileged users to see lockdown status 2020-06-22 09:30:53 +02:00
sound
tools libbpf: Fix memory leak and possible double-free in hashmap__clear 2020-06-22 09:30:51 +02:00
usr
virt KVM: arm64: Save the host's PtrAuth keys in non-preemptible context 2020-06-17 16:40:38 +02:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS
Makefile Linux 5.4.47 2020-06-17 16:40:38 +02:00
README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.