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From: Frank van der Linden <fllinden@amazon.com>
To: Chuck Lever <chuck.lever@oracle.com>
Cc: Bruce Fields <bfields@fieldses.org>,
	Linux NFS Mailing List <linux-nfs@vger.kernel.org>
Subject: Re: [PATCH 11/14] nfsd: add user xattr RPC XDR encoding/decoding logic
Date: Thu, 19 Mar 2020 22:13:50 +0000	[thread overview]
Message-ID: <20200319221350.GA18279@dev-dsk-fllinden-2c-c1893d73.us-west-2.amazon.com> (raw)
In-Reply-To: <17D7709F-2FE0-4B84-A9AF-4D6C2B36A4E7@oracle.com>

On Thu, Mar 12, 2020 at 12:24:18PM -0400, Chuck Lever wrote:
> > +static inline u32 nfsd4_getxattr_rsize(struct svc_rqst *rqstp,
> > +                                    struct nfsd4_op *op)
> > +{
> > +     u32 maxcount, rlen;
> > +
> > +     maxcount = svc_max_payload(rqstp);
> > +     rlen = min_t(u32, XATTR_SIZE_MAX, maxcount);
> > +
> > +     return (op_encode_hdr_size + 1 + XDR_QUADLEN(rlen)) * sizeof(__be32);
> 
> These should be added in the same patch that adds OP_GETXATTR and friends.
> 
> Also, Trond recently added xdr_align_size which I prefer over the
> use of XDR_QUADLEN in new code.

Thanks, I've squashed together those patches for this and the other reasons
you pointed out.

As for XDR_QUADLEN: that returns the 32bit-word rounded up lenghth - in words.
xdr_aligned_size returns the 32bit-word rounded up length - in bytes.

So, the result would then look something like:

	return xdr_align_size((op_encode_hdr_size * 4) + 4 + rlen);

Is that what you're suggesting?

- Frank

  reply	other threads:[~2020-03-19 22:13 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-11 19:59 [PATCH 00/14] server side user xattr support (RFC 8276) Frank van der Linden
2020-03-11 19:59 ` [PATCH 01/14] nfs,nfsd: NFSv4.2 extended attribute protocol definitions Frank van der Linden
2020-03-11 19:59 ` [PATCH 02/14] xattr: modify vfs_{set,remove}xattr for NFS server use Frank van der Linden
2020-03-12 16:23   ` Chuck Lever
2020-03-13 15:35   ` J. Bruce Fields
2020-03-13 16:07     ` [PATCH 02/14] xattr: modify vfs_{set, remove}xattr " Frank van der Linden
2020-03-13 21:06       ` J. Bruce Fields
2020-03-11 19:59 ` [PATCH 03/14] nfsd: split off the write decode code in to a separate function Frank van der Linden
2020-03-11 19:59 ` [PATCH 04/14] nfsd: make sure the nfsd4_ops array has the right size Frank van der Linden
2020-03-11 19:59 ` [PATCH 05/14] nfsd: add defines for NFSv4.2 extended attribute support Frank van der Linden
2020-03-12 16:23   ` Chuck Lever
2020-03-11 19:59 ` [PATCH 06/14] nfsd: define xattr functions to call in to their vfs counterparts Frank van der Linden
2020-03-12  7:37   ` kbuild test robot
2020-03-12 16:23   ` Chuck Lever
2020-03-12 17:16     ` Frank van der Linden
2020-03-12 17:57       ` Chuck Lever
2020-03-11 19:59 ` [PATCH 07/14] nfsd: take xattr bits in to account for permission checks Frank van der Linden
2020-03-11 19:59 ` [PATCH 08/14] nfsd: add structure definitions for xattr requests / responses Frank van der Linden
2020-03-11 19:59 ` [PATCH 09/14] nfsd: use kvmalloc in svcxdr_tmpalloc Frank van der Linden
2020-03-11 19:59 ` [PATCH 10/14] nfsd: implement the xattr procedure functions Frank van der Linden
2020-03-12 10:28   ` kbuild test robot
2020-03-12 16:24   ` Chuck Lever
2020-03-11 19:59 ` [PATCH 11/14] nfsd: add user xattr RPC XDR encoding/decoding logic Frank van der Linden
2020-03-12 13:28   ` kbuild test robot
2020-03-12 16:24   ` Chuck Lever
2020-03-19 22:13     ` Frank van der Linden [this message]
2020-03-19 22:15       ` Chuck Lever
2020-03-25 23:44     ` Frank van der Linden
2020-03-26 14:12       ` Chuck Lever
2020-03-12 19:16   ` Chuck Lever
2020-03-20 16:47     ` Frank van der Linden
2020-03-20 17:34       ` Chuck Lever
2020-03-20 17:54         ` J. Bruce Fields
2020-03-20 19:44         ` Frank van der Linden
2020-03-11 19:59 ` [PATCH 12/14] nfsd: add xattr operations to ops array Frank van der Linden
2020-03-11 19:59 ` [PATCH 13/14] xattr: add a function to check if a namespace is supported Frank van der Linden
2020-03-12 16:24   ` Chuck Lever
2020-03-11 19:59 ` [PATCH 14/14] nfsd: add fattr support for user extended attributes Frank van der Linden

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