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NFSD: add support for sending CB_RECALL_ANY

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Add XDR encode and decode function for CB_RECALL_ANY.

Signed-off-by: Dai Ngo <dai.ngo@oracle.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Dai Ngo 2022-11-16 19:44:46 -08:00 committed by Chuck Lever
parent a1049eb47f
commit 3959066b69
4 changed files with 84 additions and 0 deletions
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72
fs/nfsd/nfs4callback.c
View File

@ -76,6 +76,17 @@ static __be32 *xdr_encode_empty_array(__be32 *p)
* 1 Protocol"
*/
static void encode_uint32(struct xdr_stream *xdr, u32 n)
{
WARN_ON_ONCE(xdr_stream_encode_u32(xdr, n) < 0);
}
static void encode_bitmap4(struct xdr_stream *xdr, const __u32 *bitmap,
size_t len)
{
WARN_ON_ONCE(xdr_stream_encode_uint32_array(xdr, bitmap, len) < 0);
}
/*
* nfs_cb_opnum4
*
@ -328,6 +339,24 @@ static void encode_cb_recall4args(struct xdr_stream *xdr,
hdr->nops++;
}
/*
* CB_RECALLANY4args
*
* struct CB_RECALLANY4args {
* uint32_t craa_objects_to_keep;
* bitmap4 craa_type_mask;
* };
*/
static void
encode_cb_recallany4args(struct xdr_stream *xdr,
struct nfs4_cb_compound_hdr *hdr, struct nfsd4_cb_recall_any *ra)
{
encode_nfs_cb_opnum4(xdr, OP_CB_RECALL_ANY);
encode_uint32(xdr, ra->ra_keep);
encode_bitmap4(xdr, ra->ra_bmval, ARRAY_SIZE(ra->ra_bmval));
hdr->nops++;
}
/*
* CB_SEQUENCE4args
*
@ -482,6 +511,26 @@ static void nfs4_xdr_enc_cb_recall(struct rpc_rqst *req, struct xdr_stream *xdr,
encode_cb_nops(&hdr);
}
/*
* 20.6. Operation 8: CB_RECALL_ANY - Keep Any N Recallable Objects
*/
static void
nfs4_xdr_enc_cb_recall_any(struct rpc_rqst *req,
struct xdr_stream *xdr, const void *data)
{
const struct nfsd4_callback *cb = data;
struct nfsd4_cb_recall_any *ra;
struct nfs4_cb_compound_hdr hdr = {
.ident = cb->cb_clp->cl_cb_ident,
.minorversion = cb->cb_clp->cl_minorversion,
};
ra = container_of(cb, struct nfsd4_cb_recall_any, ra_cb);
encode_cb_compound4args(xdr, &hdr);
encode_cb_sequence4args(xdr, cb, &hdr);
encode_cb_recallany4args(xdr, &hdr, ra);
encode_cb_nops(&hdr);
}
/*
* NFSv4.0 and NFSv4.1 XDR decode functions
@ -520,6 +569,28 @@ static int nfs4_xdr_dec_cb_recall(struct rpc_rqst *rqstp,
return decode_cb_op_status(xdr, OP_CB_RECALL, &cb->cb_status);
}
/*
* 20.6. Operation 8: CB_RECALL_ANY - Keep Any N Recallable Objects
*/
static int
nfs4_xdr_dec_cb_recall_any(struct rpc_rqst *rqstp,
struct xdr_stream *xdr,
void *data)
{
struct nfsd4_callback *cb = data;
struct nfs4_cb_compound_hdr hdr;
int status;
status = decode_cb_compound4res(xdr, &hdr);
if (unlikely(status))
return status;
status = decode_cb_sequence4res(xdr, cb);
if (unlikely(status || cb->cb_seq_status))
return status;
status = decode_cb_op_status(xdr, OP_CB_RECALL_ANY, &cb->cb_status);
return status;
}
#ifdef CONFIG_NFSD_PNFS
/*
* CB_LAYOUTRECALL4args
@ -783,6 +854,7 @@ static const struct rpc_procinfo nfs4_cb_procedures[] = {
#endif
PROC(CB_NOTIFY_LOCK, COMPOUND, cb_notify_lock, cb_notify_lock),
PROC(CB_OFFLOAD, COMPOUND, cb_offload, cb_offload),
PROC(CB_RECALL_ANY, COMPOUND, cb_recall_any, cb_recall_any),
};
static unsigned int nfs4_cb_counts[ARRAY_SIZE(nfs4_cb_procedures)];

1
fs/nfsd/state.h
View File

@ -636,6 +636,7 @@ enum nfsd4_cb_op {
NFSPROC4_CLNT_CB_OFFLOAD,
NFSPROC4_CLNT_CB_SEQUENCE,
NFSPROC4_CLNT_CB_NOTIFY_LOCK,
NFSPROC4_CLNT_CB_RECALL_ANY,
};
/* Returns true iff a is later than b: */

5
fs/nfsd/xdr4.h
View File

@ -896,5 +896,10 @@ struct nfsd4_operation {
union nfsd4_op_u *);
};
struct nfsd4_cb_recall_any {
struct nfsd4_callback ra_cb;
u32 ra_keep;
u32 ra_bmval[1];
};
#endif

6
fs/nfsd/xdr4cb.h
View File

@ -48,3 +48,9 @@
#define NFS4_dec_cb_offload_sz (cb_compound_dec_hdr_sz + \
cb_sequence_dec_sz + \
op_dec_sz)
#define NFS4_enc_cb_recall_any_sz (cb_compound_enc_hdr_sz + \
cb_sequence_enc_sz + \
1 + 1 + 1)
#define NFS4_dec_cb_recall_any_sz (cb_compound_dec_hdr_sz + \
cb_sequence_dec_sz + \
op_dec_sz)