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Subject: [PATCH v2 0/4] nfs-utils changes for RPC-with-TLS
From:   Chuck Lever <cel@kernel.org>
To:     SteveD@redhat.com
Cc:     linux-nfs@vger.kernel.org, rick.macklem@gmail.com,
        kernel-tls-handshake@lists.linux.dev
Date:   Wed, 29 Mar 2023 10:08:05 -0400
Message-ID: <168009806320.2522.10415374334827613451.stgit@manet.1015granger.net>
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Hi Steve-

This is client- and server-side nfs-utils support for RPC-with-TLS.
The client side support at this point is only a man page update
since the kernel handles mount option processing itself.

The server implementation can support both the opportunistic use of
transport layer security (it will be used if the client cares to),
and the required use of transport layer security (the server
requires the client to use it to access a particular export).

Without any other user space componentry, this implementation is
able to handle clients that request the use of RPC-with-TLS. To
support security policies that restrict access to exports based on
the client's use of TLS, modifications to exportfs and mountd are
needed. These are contained in this post, and can also be found
here:

git://git.linux-nfs.org/projects/cel/nfs-utils.git

The kernel patches, along with the handshake upcall, are carried in
the topic-rpc-with-tls-upcall branch available from:

https://git.kernel.org/pub/scm/linux/kernel/git/cel/linux.git

Soon I hope to compose a new man page in Section 7 that will provide
an overview and quick set-up guidance for NFS's use of RPC-with-TLS.


Changes since v1:
- Addressed Jeff's review comments
- Updated nfs.man as well

---

Chuck Lever (4):
      libexports: Fix whitespace damage in support/nfs/exports.c
      exports: Add an xprtsec= export option
      exports(5): Describe the xprtsec= export option
      nfs(5): Document the new "xprtsec=" mount option


 support/export/cache.c       |  15 ++++++
 support/include/nfs/export.h |  14 +++++
 support/include/nfslib.h     |  14 +++++
 support/nfs/exports.c        | 100 ++++++++++++++++++++++++++++++++---
 utils/exportfs/exportfs.c    |   1 +
 utils/exportfs/exports.man   |  51 +++++++++++++++++-
 utils/mount/nfs.man          |  34 +++++++++++-
 7 files changed, 219 insertions(+), 10 deletions(-)

--
Chuck Lever