Hi,
I am trying to use OpenSSH (which uses the Openssl lib with HW Offload crypto
engine support). I am using the patched version of OpenSSL that I submitted. It
uses the /dev/crypto interface that was provided by the patch [1] submitted to
Opensource.
The interface is provided in such a way that one file descriptor per
session is opened. On this fd we set the session, do cipher/hash operations and
when done delete the session and close the fd. The problem arises after running
this iteration (open, session set, operation and close) for several hundred
times (over 500 times), the opening of file /dev/crypto fails with error -2 (no
such file). I tried looking at the open system call implementation and found
that “inode = next.dentry->d_inode” is NULL in routine “__link_path_walk” in
fs/namei.c which is not the case when it is working.
Why would the opening of /dev/crypto fails only after several hundred
iteration? I verified the cryptodev driver functionality and looked at the
Openssl code but was not able to determine the cause of the problem. This is
with Linux 2.6.28.3.
Any thoughts/suggestions about what could be wrong would be highly appreciated.
Thanks,
Shasi
[1] Add CryptoAPI User Interface Support Patch v6
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