cryptosoft: Stop single-threading requests within a session.

[jhb]

Summary

All of the request handlers no longer modify session state, so remove
the mutex limiting operations to one per session. In addition, change
the pointer to the session state passed to process callbacks to const.

Suggested by: mjg
Sponsored by: The FreeBSD Foundation

[markj]

sys/opencrypto/cryptosoft.c

79

No need to break the line, I think.

911

I think this can stay as one line.

[jhb]

sys/opencrypto/cryptosoft.c

79

I think it crossed 80 cols in my editor, but I'll double check.

[mjg]

Thank you!

Is this mfcable to stable/12 by any chance?

[jhb]

In D33317#754176, @mjg wrote:

Thank you!

Is this mfcable to stable/12 by any chance?

Hmmm, I can maybe see about merging to 13. OCF in 12 is quite a bit different. It could perhaps be reimplemented there, but there might be quite a few conflicts.

[mjg]

In that case I would not bother.