From 180197536b15d5862b389ce90b46ec8d004056f6 Mon Sep 17 00:00:00 2001 From: Ricardo Labiaga Date: Sat, 5 Dec 2009 16:08:40 -0500 Subject: [PATCH] nfs41: RECLAIM_COMPLETE XDR functionality XDR encoding and decoding for RECLAIM_COMPLETE. Implements the necessary encoding to indicate reclaim complete for the entire client. In the future, it can be extended to provide reclaim complete functionality for a single file system after migration. Signed-off-by: Ricardo Labiaga Signed-off-by: Trond Myklebust --- fs/nfs/nfs4xdr.c | 66 +++++++++++++++++++++++++++++++++++++++++ include/linux/nfs4.h | 1 + include/linux/nfs_xdr.h | 10 +++++++ 3 files changed, 77 insertions(+) diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index bc8711d3029..e437fd6a819 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -301,6 +301,8 @@ static int nfs4_stat_to_errno(int); XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4) #define decode_sequence_maxsz (op_decode_hdr_maxsz + \ XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5) +#define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4) +#define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4) #else /* CONFIG_NFS_V4_1 */ #define encode_sequence_maxsz 0 #define decode_sequence_maxsz 0 @@ -678,6 +680,12 @@ static int nfs4_stat_to_errno(int); decode_sequence_maxsz + \ decode_putrootfh_maxsz + \ decode_fsinfo_maxsz) +#define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \ + encode_sequence_maxsz + \ + encode_reclaim_complete_maxsz) +#define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \ + decode_sequence_maxsz + \ + decode_reclaim_complete_maxsz) const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH + compound_encode_hdr_maxsz + @@ -1623,6 +1631,19 @@ static void encode_destroy_session(struct xdr_stream *xdr, hdr->nops++; hdr->replen += decode_destroy_session_maxsz; } + +static void encode_reclaim_complete(struct xdr_stream *xdr, + struct nfs41_reclaim_complete_args *args, + struct compound_hdr *hdr) +{ + __be32 *p; + + p = reserve_space(xdr, 8); + *p++ = cpu_to_be32(OP_RECLAIM_COMPLETE); + *p++ = cpu_to_be32(args->one_fs); + hdr->nops++; + hdr->replen += decode_reclaim_complete_maxsz; +} #endif /* CONFIG_NFS_V4_1 */ static void encode_sequence(struct xdr_stream *xdr, @@ -2451,6 +2472,26 @@ static int nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req, uint32_t *p, encode_nops(&hdr); return 0; } + +/* + * a RECLAIM_COMPLETE request + */ +static int nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req, uint32_t *p, + struct nfs41_reclaim_complete_args *args) +{ + struct xdr_stream xdr; + struct compound_hdr hdr = { + .minorversion = nfs4_xdr_minorversion(&args->seq_args) + }; + + xdr_init_encode(&xdr, &req->rq_snd_buf, p); + encode_compound_hdr(&xdr, req, &hdr); + encode_sequence(&xdr, &args->seq_args, &hdr); + encode_reclaim_complete(&xdr, args, &hdr); + encode_nops(&hdr); + return 0; +} + #endif /* CONFIG_NFS_V4_1 */ static void print_overflow_msg(const char *func, const struct xdr_stream *xdr) @@ -4559,6 +4600,11 @@ static int decode_destroy_session(struct xdr_stream *xdr, void *dummy) { return decode_op_hdr(xdr, OP_DESTROY_SESSION); } + +static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy) +{ + return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE); +} #endif /* CONFIG_NFS_V4_1 */ static int decode_sequence(struct xdr_stream *xdr, @@ -5622,6 +5668,25 @@ static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp, uint32_t *p, status = decode_fsinfo(&xdr, res->lr_fsinfo); return status; } + +/* + * Decode RECLAIM_COMPLETE response + */ +static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp, uint32_t *p, + struct nfs41_reclaim_complete_res *res) +{ + struct xdr_stream xdr; + struct compound_hdr hdr; + int status; + + xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); + status = decode_compound_hdr(&xdr, &hdr); + if (!status) + status = decode_sequence(&xdr, &res->seq_res, rqstp); + if (!status) + status = decode_reclaim_complete(&xdr, (void *)NULL); + return status; +} #endif /* CONFIG_NFS_V4_1 */ __be32 *nfs4_decode_dirent(__be32 *p, struct nfs_entry *entry, int plus) @@ -5798,6 +5863,7 @@ struct rpc_procinfo nfs4_procedures[] = { PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session), PROC(SEQUENCE, enc_sequence, dec_sequence), PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time), + PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete), #endif /* CONFIG_NFS_V4_1 */ }; diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h index 89404bfb72b..9b8299af374 100644 --- a/include/linux/nfs4.h +++ b/include/linux/nfs4.h @@ -530,6 +530,7 @@ enum { NFSPROC4_CLNT_DESTROY_SESSION, NFSPROC4_CLNT_SEQUENCE, NFSPROC4_CLNT_GET_LEASE_TIME, + NFSPROC4_CLNT_RECLAIM_COMPLETE, }; /* nfs41 types */ diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index ea32db30c28..51071b33575 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -939,6 +939,16 @@ struct nfs41_create_session_args { struct nfs41_create_session_res { struct nfs_client *client; }; + +struct nfs41_reclaim_complete_args { + /* In the future extend to include curr_fh for use with migration */ + unsigned char one_fs:1; + struct nfs4_sequence_args seq_args; +}; + +struct nfs41_reclaim_complete_res { + struct nfs4_sequence_res seq_res; +}; #endif /* CONFIG_NFS_V4_1 */ struct nfs_page; -- 2.39.2