Record the stateid being returned to help troubleshoot problems
with delegation. The status code is reported by the
nfsd_compound_status tracepoint.
Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
---
fs/nfsd/nfs4state.c | 2 ++
fs/nfsd/trace.h | 26 ++++++++++++++++++++++++++
2 files changed, 28 insertions(+)
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 6509e431ddd2..8444e8b51fa8 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -6302,6 +6302,8 @@ nfsd4_delegreturn(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
__be32 status;
struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id);
+ trace_nfsd4_delegreturn(rqstp, stateid);
+
if ((status = fh_verify(rqstp, &cstate->current_fh, S_IFREG, 0)))
return status;
diff --git a/fs/nfsd/trace.h b/fs/nfsd/trace.h
index cf350f37ddc9..2e4697324aa8 100644
--- a/fs/nfsd/trace.h
+++ b/fs/nfsd/trace.h
@@ -510,6 +510,32 @@ TRACE_EVENT(nfsd4_stateid_prep,
)
);
+TRACE_EVENT(nfsd4_delegreturn,
+ TP_PROTO(
+ const struct svc_rqst *rqstp,
+ const stateid_t *stp
+ ),
+ TP_ARGS(rqstp, stp),
+ TP_STRUCT__entry(
+ __field(u32, xid)
+ __field(u32, cl_boot)
+ __field(u32, cl_id)
+ __field(u32, si_id)
+ __field(u32, si_generation)
+ ),
+ TP_fast_assign(
+ __entry->xid = be32_to_cpu(rqstp->rq_xid);
+ __entry->cl_boot = stp->si_opaque.so_clid.cl_boot;
+ __entry->cl_id = stp->si_opaque.so_clid.cl_id;
+ __entry->si_id = stp->si_opaque.so_id;
+ __entry->si_generation = stp->si_generation;
+ ),
+ TP_printk("xid=0x%08x client %08x:%08x stateid %08x:%08x",
+ __entry->xid, __entry->cl_boot, __entry->cl_id,
+ __entry->si_id, __entry->si_generation
+ )
+);
+
DECLARE_EVENT_CLASS(nfsd_stateid_class,
TP_PROTO(stateid_t *stp),
TP_ARGS(stp),
