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1c3b63f155
Trying to use ktls on a system with 32-bit userspace and 64-bit kernel results in a EOPNOTSUPP message during sendmsg: setsockopt(3, SOL_TLS, TLS_TX, …, 40) = 0 sendmsg(3, …, msg_flags=0}, 0) = -1 EOPNOTSUPP (Operation not supported) The tls_sw implementation does strict flag checking and does not allow the MSG_CMSG_COMPAT flag, which is set if the message comes in through the compat syscall. This patch adds MSG_CMSG_COMPAT to the flag check to allow the usage of the TLS SW implementation on systems using the compat syscall path. Note that the same check is present in the sendmsg path for the TLS device implementation, however the flag hasn't been added there for lack of testing hardware. Signed-off-by: Rouven Czerwinski <r.czerwinski@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
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.