Merge tag 'nfsd-5.5' of git://linux-nfs.org/~bfields/linux

Pull nfsd updates from Bruce Fields:
 "This is a relatively quiet cycle for nfsd, mainly various bugfixes.

  Possibly most interesting is Trond's fixes for some callback races
  that were due to my incomplete understanding of rpc client shutdown.
  Unfortunately at the last minute I've started noticing a new
  intermittent failure to send callbacks. As the logic seems basically
  correct, I'm leaving Trond's patches in for now, and hope to find a
  fix in the next week so I don't have to revert those patches"

* tag 'nfsd-5.5' of git://linux-nfs.org/~bfields/linux: (24 commits)
  nfsd: depend on CRYPTO_MD5 for legacy client tracking
  NFSD fixing possible null pointer derefering in copy offload
  nfsd: check for EBUSY from vfs_rmdir/vfs_unink.
  nfsd: Ensure CLONE persists data and metadata changes to the target file
  SUNRPC: Fix backchannel latency metrics
  nfsd: restore NFSv3 ACL support
  nfsd: v4 support requires CRYPTO_SHA256
  nfsd: Fix cld_net->cn_tfm initialization
  lockd: remove __KERNEL__ ifdefs
  sunrpc: remove __KERNEL__ ifdefs
  race in exportfs_decode_fh()
  nfsd: Drop LIST_HEAD where the variable it declares is never used.
  nfsd: document callback_wq serialization of callback code
  nfsd: mark cb path down on unknown errors
  nfsd: Fix races between nfsd4_cb_release() and nfsd4_shutdown_callback()
  nfsd: minor 4.1 callback cleanup
  SUNRPC: Fix svcauth_gss_proxy_init()
  SUNRPC: Trace gssproxy upcall results
  sunrpc: fix crash when cache_head become valid before update
  nfsd: remove private bin2hex implementation
  ...

1 files changed, 55 insertions, 0 deletions

diff --git a/include/trace/events/sunrpc.h b/include/trace/events/sunrpc.h
index 205bf28bcada..8c73ffb5f7fd 100644
--- a/include/trace/events/sunrpc.h
+++ b/include/trace/events/sunrpc.h
@@ -14,6 +14,26 @@
 #include <linux/net.h>
 #include <linux/tracepoint.h>
 
+TRACE_DEFINE_ENUM(RPC_AUTH_OK);
+TRACE_DEFINE_ENUM(RPC_AUTH_BADCRED);
+TRACE_DEFINE_ENUM(RPC_AUTH_REJECTEDCRED);
+TRACE_DEFINE_ENUM(RPC_AUTH_BADVERF);
+TRACE_DEFINE_ENUM(RPC_AUTH_REJECTEDVERF);
+TRACE_DEFINE_ENUM(RPC_AUTH_TOOWEAK);
+TRACE_DEFINE_ENUM(RPCSEC_GSS_CREDPROBLEM);
+TRACE_DEFINE_ENUM(RPCSEC_GSS_CTXPROBLEM);
+
+#define rpc_show_auth_stat(status)					\
+	__print_symbolic(status,					\
+		{ RPC_AUTH_OK,			"AUTH_OK" },		\
+		{ RPC_AUTH_BADCRED,		"BADCRED" },		\
+		{ RPC_AUTH_REJECTEDCRED,	"REJECTEDCRED" },	\
+		{ RPC_AUTH_BADVERF,		"BADVERF" },		\
+		{ RPC_AUTH_REJECTEDVERF,	"REJECTEDVERF" },	\
+		{ RPC_AUTH_TOOWEAK,		"TOOWEAK" },		\
+		{ RPCSEC_GSS_CREDPROBLEM,	"GSS_CREDPROBLEM" },	\
+		{ RPCSEC_GSS_CTXPROBLEM,	"GSS_CTXPROBLEM" })	\
+
 DECLARE_EVENT_CLASS(rpc_task_status,
 
 	TP_PROTO(const struct rpc_task *task),
@@ -960,6 +980,41 @@ TRACE_EVENT(svc_recv,
 			show_rqstp_flags(__entry->flags))
 );
 
+#define svc_show_status(status)				\
+	__print_symbolic(status,			\
+		{ SVC_GARBAGE,	"SVC_GARBAGE" },	\
+		{ SVC_SYSERR,	"SVC_SYSERR" },		\
+		{ SVC_VALID,	"SVC_VALID" },		\
+		{ SVC_NEGATIVE,	"SVC_NEGATIVE" },	\
+		{ SVC_OK,	"SVC_OK" },		\
+		{ SVC_DROP,	"SVC_DROP" },		\
+		{ SVC_CLOSE,	"SVC_CLOSE" },		\
+		{ SVC_DENIED,	"SVC_DENIED" },		\
+		{ SVC_PENDING,	"SVC_PENDING" },	\
+		{ SVC_COMPLETE,	"SVC_COMPLETE" })
+
+TRACE_EVENT(svc_authenticate,
+	TP_PROTO(const struct svc_rqst *rqst, int auth_res, __be32 auth_stat),
+
+	TP_ARGS(rqst, auth_res, auth_stat),
+
+	TP_STRUCT__entry(
+		__field(u32, xid)
+		__field(unsigned long, svc_status)
+		__field(unsigned long, auth_stat)
+	),
+
+	TP_fast_assign(
+		__entry->xid = be32_to_cpu(rqst->rq_xid);
+		__entry->svc_status = auth_res;
+		__entry->auth_stat = be32_to_cpu(auth_stat);
+	),
+
+	TP_printk("xid=0x%08x auth_res=%s auth_stat=%s",
+			__entry->xid, svc_show_status(__entry->svc_status),
+			rpc_show_auth_stat(__entry->auth_stat))
+);
+
 TRACE_EVENT(svc_process,
 	TP_PROTO(const struct svc_rqst *rqst, const char *name),