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Filename Latest commit message Latest commit date
Youghandhar Chintala 130b34a204 mac80211: Add support to trigger sta disconnect on hardware restart
[ Upstream commit 7d352ccf1e9935b5222ca84e8baeb07a0c8f94b9 ]

Currently in case of target hardware restart, we just reconfig and
re-enable the security keys and enable the network queues to start
data traffic back from where it was interrupted.

Many ath10k wifi chipsets have sequence numbers for the data
packets assigned by firmware and the mac sequence number will
restart from zero after target hardware restart leading to mismatch
in the sequence number expected by the remote peer vs the sequence
number of the frame sent by the target firmware.

This mismatch in sequence number will cause out-of-order packets
on the remote peer and all the frames sent by the device are dropped
until we reach the sequence number which was sent before we restarted
the target hardware

In order to fix this, we trigger a sta disconnect, in case of target
hw restart. After this there will be a fresh connection and thereby
avoiding the dropping of frames by remote peer.

The right fix would be to pull the entire data path into the host
which is not feasible or would need lots of complex changes and
will still be inefficient.

Tested on ath10k using WCN3990, QCA6174

Signed-off-by: Youghandhar Chintala <youghand@codeaurora.org>
Link: https://lore.kernel.org/r/20220308115325.5246-2-youghand@codeaurora.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Stable-dep-of: 07a6e3b78a65 ("wifi: iwlwifi: mvm: Fix response handling in iwl_mvm_send_recovery_cmd()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:52 +01:00
arch arm64/uprobes: change the uprobe_opcode_t typedef to fix the sparse warning 2024-11-08 16:20:52 +01:00
block blk-rq-qos: fix crash on rq_qos_wait vs. rq_qos_wake_function race 2024-11-08 16:20:48 +01:00
certs
crypto crypto: aead,cipher - zeroize key buffer after use 2024-11-08 16:20:33 +01:00
Documentation arm64: errata: Expand speculative SSBS workaround once more 2024-11-08 16:20:42 +01:00
drivers hv_netvsc: Fix VF namespace also in synthetic NIC NETDEV_REGISTER event 2024-11-08 16:20:51 +01:00
fs nilfs2: fix kernel bug due to missing clearing of buffer delay flag 2024-11-08 16:20:51 +01:00
include mac80211: Add support to trigger sta disconnect on hardware restart 2024-11-08 16:20:52 +01:00
init init: open /initrd.image with O_LARGEFILE 2024-04-13 12:51:36 +02:00
ipc ipc: replace costly bailout check in sysvipc_find_ipc() 2024-09-04 13:15:02 +02:00
kernel cgroup: Fix potential overflow issue when checking max_depth 2024-11-08 16:20:52 +01:00
lib debugobjects: Fix conditions in fill_pool() 2024-11-08 16:20:34 +01:00
LICENSES
mm mm/swapfile: skip HugeTLB pages for unuse_vma 2024-11-08 16:20:47 +01:00
net mac80211: Add support to trigger sta disconnect on hardware restart 2024-11-08 16:20:52 +01:00
samples
scripts scripts: kconfig: merge_config: config files: add a trailing newline 2024-11-08 16:20:24 +01:00
security selinux: improve error checking in sel_write_load() 2024-11-08 16:20:52 +01:00
sound ALSA: hda/realtek: Add subwoofer quirk for Acer Predator G9-593 2024-11-08 16:20:51 +01:00
tools tools/iio: Add memory allocation failure check for trigger_name 2024-11-08 16:20:45 +01:00
usr
virt KVM: Fix a data race on last_boosted_vcpu in kvm_vcpu_on_spin() 2024-11-08 16:20:47 +01:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore Remove *.orig pattern from .gitignore 2024-11-08 16:20:33 +01:00
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS
Makefile Linux 5.4.284 2024-09-12 11:03:57 +02:00
README

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

There are several guides for kernel developers and users. These guides can
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In order to build the documentation, use ``make htmldocs`` or
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    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.