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When a netdev issues a RX async resync request for a TLS connection, the TLS module handles it by logging record headers and attempting to match them to the tcp_sn provided by the device. If a match is found, the TLS module approves the tcp_sn for resynchronization. While waiting for a device response, the TLS module also increments rcd_delta each time a new TLS record is received, tracking the distance from the original resync request. However, if the device response is delayed or fails (e.g due to unstable connection and device getting out of tracking, hardware errors, resource exhaustion etc.), the TLS module keeps logging and incrementing, which can lead to a WARN() when rcd_delta exceeds the threshold. To address this, introduce tls_offload_rx_resync_async_request_cancel() to explicitly cancel resync requests when a device response failure is detected. Call this helper also as a final safeguard when rcd_delta crosses its threshold, as reaching this point implies that earlier cancellation did not occur. Signed-off-by: Shahar Shitrit <shshitrit@nvidia.com> Reviewed-by: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: Tariq Toukan <tariqt@nvidia.com> Link: https://patch.msgid.link/1761508983-937977-3-git-send-email-tariqt@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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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 reStructuredText 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.