On Thu, 6 Aug 2020 08:49:06 +0200 Rouven Czerwinski wrote: > 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.czerwin...@pengutronix.de>
I don't know much about the compat stuff, I trust our cmsg handling is fine? Just to be sure - did you run tools/testing/selftests/net/tls ?
