Re: [PATCH v15 17/26] nfsd: implement server support for NFS_LOCALIO_PROGRAM

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On Sat, Aug 31, 2024 at 06:37:37PM -0400, Mike Snitzer wrote:
> The LOCALIO auxiliary RPC protocol consists of a single "UUID_IS_LOCAL"
> RPC method that allows the Linux NFS client to verify the local Linux
> NFS server can see the nonce (single-use UUID) the client generated and
> made available in nfs_common.  The server expects this protocol to use
> the same transport as NFS and NFSACL for its RPCs.  This protocol
> isn't part of an IETF standard, nor does it need to be considering it
> is Linux-to-Linux auxiliary RPC protocol that amounts to an
> implementation detail.
> 
> The UUID_IS_LOCAL method encodes the client generated uuid_t in terms of
> the fixed UUID_SIZE (16 bytes).  The fixed size opaque encode and decode
> XDR methods are used instead of the less efficient variable sized
> methods.
> 
> The RPC program number for the NFS_LOCALIO_PROGRAM is 400122 (as assigned
> by IANA, see https://www.iana.org/assignments/rpc-program-numbers/ ):
> Linux Kernel Organization       400122  nfslocalio
> 
> Signed-off-by: Mike Snitzer <snitzer@xxxxxxxxxx>
> [neilb: factored out and simplified single localio protocol]
> Co-developed-by: NeilBrown <neilb@xxxxxxx>
> Signed-off-by: NeilBrown <neilb@xxxxxxx>
> 
> Not-Acked-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
> Not-Reviewed-by: Jeff Layton <jlayton@xxxxxxxxxx>

v15 LGTM.

Acked-by: Chuck Lever <chuck.lever@xxxxxxxxxx>

-- 
Chuck Lever




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