Re: [PATCH 2/4] nfs: update maxsz values for SETCLIENTID and EXCHANGE_ID

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Hi Jeff-

On Jun 4, 2015, at 12:44 PM, Jeff Layton <jlayton@xxxxxxxxxxxxxxx> wrote:

> The spec allows for up to NFS4_OPAQUE_LIMIT (1k). While we'll almost
> certainly never use that much, these ops are generally the only ones
> in the compound so we might as well allow for them to be that large.
> 
> Signed-off-by: Jeff Layton <jeff.layton@xxxxxxxxxxxxxxx>
> ---
> fs/nfs/nfs4xdr.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
> index 2826e117e3df..e105b9363f0a 100644
> --- a/fs/nfs/nfs4xdr.c
> +++ b/fs/nfs/nfs4xdr.c
> @@ -139,7 +139,7 @@ static int nfs4_stat_to_errno(int);
> #define encode_setclientid_maxsz \
> 				(op_encode_hdr_maxsz + \
> 				XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
> -				XDR_QUADLEN(NFS4_SETCLIENTID_NAMELEN) + \
> +				XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \

Should you add another word here for the length of the opaque?

> 				1 /* sc_prog */ + \
> 				1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
> 				1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
> @@ -288,7 +288,7 @@ static int nfs4_stat_to_errno(int);
> #define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
> 				encode_verifier_maxsz + \
> 				1 /* co_ownerid.len */ + \
> -				XDR_QUADLEN(NFS4_EXCHANGE_ID_LEN) + \
> +				XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
> 				1 /* flags */ + \
> 				1 /* spa_how */ + \
> 				/* max is SP4_MACH_CRED (for now) */ + \
> -- 
> 2.4.2
> 
> --
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--
Chuck Lever
chuck[dot]lever[at]oracle[dot]com



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