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Commit 2cebf828 authored by Trond Myklebust's avatar Trond Myklebust
Browse files

NFSv4: Fix the underestimate of NFSv4 open request size 



The maximum size depends on the filename size and a number of other
elements which are currently not being counted.

Signed-off-by: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
parent bd625ba8

fs/nfs/nfs4xdr.c

+45 −18
Original line number Diff line number Diff line
@@ -70,7 +70,8 @@ static int nfs4_stat_to_errno(int); 
/* lock,open owner id: 

 * we currently use size 1 (u32) out of (NFS4_OPAQUE_LIMIT  >> 2)

 */

#define owner_id_maxsz          (1 + 1)

#define open_owner_id_maxsz	(1 + 1)

#define lock_owner_id_maxsz	(1 + 1)

#define compound_encode_hdr_maxsz	(3 + (NFS4_MAXTAGLEN >> 2))

#define compound_decode_hdr_maxsz	(3 + (NFS4_MAXTAGLEN >> 2))

#define op_encode_hdr_maxsz	(1)
@@ -120,6 +121,25 @@ static int nfs4_stat_to_errno(int); 
				(op_decode_hdr_maxsz)

#define encode_lookup_maxsz	(op_encode_hdr_maxsz + \

				1 + ((3 + NFS4_FHSIZE) >> 2))

#define encode_share_access_maxsz \

				(2)

#define encode_createmode_maxsz	(1 + nfs4_fattr_maxsz)

#define encode_opentype_maxsz	(1 + encode_createmode_maxsz)

#define encode_claim_null_maxsz	(1 + nfs4_name_maxsz)

#define encode_open_maxsz	(op_encode_hdr_maxsz + \

				2 + encode_share_access_maxsz + 2 + \

				open_owner_id_maxsz + \

				encode_opentype_maxsz + \

				encode_claim_null_maxsz)

#define decode_ace_maxsz	(3 + nfs4_owner_maxsz)

#define decode_delegation_maxsz	(1 + XDR_QUADLEN(NFS4_STATEID_SIZE) + 1 + \

				decode_ace_maxsz)

#define decode_change_info_maxsz	(5)

#define decode_open_maxsz	(op_decode_hdr_maxsz + \

				XDR_QUADLEN(NFS4_STATEID_SIZE) + \

				decode_change_info_maxsz + 1 + \

				nfs4_fattr_bitmap_maxsz + \

				decode_delegation_maxsz)

#define encode_remove_maxsz	(op_encode_hdr_maxsz + \

				nfs4_name_maxsz)

#define encode_rename_maxsz	(op_encode_hdr_maxsz + \
@@ -136,7 +156,9 @@ static int nfs4_stat_to_errno(int); 
#define encode_create_maxsz	(op_encode_hdr_maxsz + \

				2 + nfs4_name_maxsz + \

				nfs4_fattr_maxsz)

#define decode_create_maxsz	(op_decode_hdr_maxsz + 8)

#define decode_create_maxsz	(op_decode_hdr_maxsz + \

				decode_change_info_maxsz + \

				nfs4_fattr_bitmap_maxsz)

#define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)

#define decode_delegreturn_maxsz (op_decode_hdr_maxsz)

#define NFS4_enc_compound_sz	(1024)  /* XXX: large enough? */
@@ -177,15 +199,20 @@ static int nfs4_stat_to_errno(int); 
				decode_getattr_maxsz)

#define NFS4_enc_open_sz        (compound_encode_hdr_maxsz + \

				encode_putfh_maxsz + \

                                op_encode_hdr_maxsz + \

                                13 + 3 + 2 + 64 + \

				encode_savefh_maxsz + \

				encode_open_maxsz + \

				encode_getfh_maxsz + \

				encode_getattr_maxsz + \

                                encode_getfh_maxsz)

				encode_restorefh_maxsz + \

				encode_getattr_maxsz)

#define NFS4_dec_open_sz        (compound_decode_hdr_maxsz + \

				decode_putfh_maxsz + \

                                op_decode_hdr_maxsz + 4 + 5 + 2 + 3 + \

				decode_savefh_maxsz + \

				decode_open_maxsz + \

				decode_getfh_maxsz + \

				decode_getattr_maxsz + \

                                decode_getfh_maxsz)

				decode_restorefh_maxsz + \

				decode_getattr_maxsz)

#define NFS4_enc_open_confirm_sz      \

                                (compound_encode_hdr_maxsz + \

                                encode_putfh_maxsz + \
@@ -195,12 +222,12 @@ static int nfs4_stat_to_errno(int); 
                                        op_decode_hdr_maxsz + 4)

#define NFS4_enc_open_noattr_sz	(compound_encode_hdr_maxsz + \

					encode_putfh_maxsz + \

					op_encode_hdr_maxsz + \

					11)

					encode_open_maxsz + \

					encode_getattr_maxsz)

#define NFS4_dec_open_noattr_sz	(compound_decode_hdr_maxsz + \

					decode_putfh_maxsz + \

					op_decode_hdr_maxsz + \

					4 + 5 + 2 + 3)

					decode_open_maxsz + \

					decode_getattr_maxsz)

#define NFS4_enc_open_downgrade_sz \

				(compound_encode_hdr_maxsz + \

                                encode_putfh_maxsz + \
@@ -258,19 +285,19 @@ static int nfs4_stat_to_errno(int); 
				op_encode_hdr_maxsz + \

				1 + 1 + 2 + 2 + \

				1 + 4 + 1 + 2 + \

				owner_id_maxsz)

				lock_owner_id_maxsz)

#define NFS4_dec_lock_sz        (compound_decode_hdr_maxsz + \

				decode_putfh_maxsz + \

				decode_getattr_maxsz + \

				op_decode_hdr_maxsz + \

				2 + 2 + 1 + 2 + \

				owner_id_maxsz)

				lock_owner_id_maxsz)

#define NFS4_enc_lockt_sz       (compound_encode_hdr_maxsz + \

				encode_putfh_maxsz + \

				encode_getattr_maxsz + \

				op_encode_hdr_maxsz + \

				1 + 2 + 2 + 2 + \

				owner_id_maxsz)

				lock_owner_id_maxsz)

#define NFS4_dec_lockt_sz       (NFS4_dec_lock_sz)

#define NFS4_enc_locku_sz       (compound_encode_hdr_maxsz + \

				encode_putfh_maxsz + \