nfs41: destroy_session operation

[mv-sheeva.git] / fs / nfs / nfs4xdr.c

diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 7a243a2cf0bee99f3932b0f426fc409d5e662b2d..a81e49648ccbe7918a5b880af1f333a54c51291b 100644 (file)
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -294,6 +294,8 @@ static int nfs4_stat_to_errno(int);
                                     1 /* csr_flags */ + \
                                     decode_channel_attrs_maxsz + \
                                     decode_channel_attrs_maxsz)
+#define encode_destroy_session_maxsz    (op_encode_hdr_maxsz + 4)
+#define decode_destroy_session_maxsz    (op_decode_hdr_maxsz)
 #define encode_sequence_maxsz  0 /* stub */
 #define decode_sequence_maxsz  0 /* stub */
 #else /* CONFIG_NFS_V4_1 */
@@ -655,6 +657,10 @@ static int nfs4_stat_to_errno(int);
 #define NFS4_dec_create_session_sz \
                                (compound_decode_hdr_maxsz + \
                                 decode_create_session_maxsz)
+#define NFS4_enc_destroy_session_sz    (compound_encode_hdr_maxsz + \
+                                        encode_destroy_session_maxsz)
+#define NFS4_dec_destroy_session_sz    (compound_decode_hdr_maxsz + \
+                                        decode_destroy_session_maxsz)
 #define NFS4_enc_get_lease_time_sz     (compound_encode_hdr_maxsz + \
                                         encode_sequence_maxsz + \
                                         encode_putrootfh_maxsz + \
@@ -1609,6 +1615,18 @@ static void encode_create_session(struct xdr_stream *xdr,
        hdr->nops++;
        hdr->replen += decode_create_session_maxsz;
 }
+
+static void encode_destroy_session(struct xdr_stream *xdr,
+                                  struct nfs4_session *session,
+                                  struct compound_hdr *hdr)
+{
+       __be32 *p;
+       RESERVE_SPACE(4 + NFS4_MAX_SESSIONID_LEN);
+       WRITE32(OP_DESTROY_SESSION);
+       WRITEMEM(session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
+       hdr->nops++;
+       hdr->replen += decode_destroy_session_maxsz;
+}
 #endif /* CONFIG_NFS_V4_1 */
 
 static void encode_sequence(struct xdr_stream *xdr,
@@ -2354,6 +2372,24 @@ static int nfs4_xdr_enc_create_session(struct rpc_rqst *req, uint32_t *p,
        return 0;
 }
 
+/*
+ * a DESTROY_SESSION request
+ */
+static int nfs4_xdr_enc_destroy_session(struct rpc_rqst *req, uint32_t *p,
+                                       struct nfs4_session *session)
+{
+       struct xdr_stream xdr;
+       struct compound_hdr hdr = {
+               .minorversion = session->clp->cl_minorversion,
+       };
+
+       xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+       encode_compound_hdr(&xdr, req, &hdr);
+       encode_destroy_session(&xdr, session, &hdr);
+       encode_nops(&hdr);
+       return 0;
+}
+
 /*
  * a GET_LEASE_TIME request
  */
@@ -4188,6 +4224,11 @@ static int decode_create_session(struct xdr_stream *xdr,
                status = decode_chan_attrs(xdr, &session->bc_attrs);
        return status;
 }
+
+static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
+{
+       return decode_op_hdr(xdr, OP_DESTROY_SESSION);
+}
 #endif /* CONFIG_NFS_V4_1 */
 
 static int decode_sequence(struct xdr_stream *xdr,
@@ -5122,6 +5163,23 @@ static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp, uint32_t *p,
        return status;
 }
 
+/*
+ * a DESTROY_SESSION request
+ */
+static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp, uint32_t *p,
+                                       void *dummy)
+{
+       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_destroy_session(&xdr, dummy);
+       return status;
+}
+
 /*
  * a GET_LEASE_TIME request
  */
@@ -5316,6 +5374,7 @@ struct rpc_procinfo       nfs4_procedures[] = {
 #if defined(CONFIG_NFS_V4_1)
   PROC(EXCHANGE_ID,    enc_exchange_id,        dec_exchange_id),
   PROC(CREATE_SESSION, enc_create_session,     dec_create_session),
+  PROC(DESTROY_SESSION,        enc_destroy_session,    dec_destroy_session),
   PROC(GET_LEASE_TIME, enc_get_lease_time,     dec_get_lease_time),
 #endif /* CONFIG_NFS_V4_1 */
 };