SUNRPC: Don't spam gssd with upcall requests when the kerberos key expired
Now that the rpc.gssd daemon can explicitly tell us that the key expired,
we should cache that information to avoid spamming gssd.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/include/linux/sunrpc/auth.h b/include/linux/sunrpc/auth.h
index 996df4d..87d7ec0 100644
--- a/include/linux/sunrpc/auth.h
+++ b/include/linux/sunrpc/auth.h
@@ -54,6 +54,7 @@
#define RPCAUTH_CRED_NEW 0
#define RPCAUTH_CRED_UPTODATE 1
#define RPCAUTH_CRED_HASHED 2
+#define RPCAUTH_CRED_NEGATIVE 3
#define RPCAUTH_CRED_MAGIC 0x0f4aa4f0
diff --git a/include/linux/sunrpc/auth_gss.h b/include/linux/sunrpc/auth_gss.h
index d48d4e6..671538d 100644
--- a/include/linux/sunrpc/auth_gss.h
+++ b/include/linux/sunrpc/auth_gss.h
@@ -82,6 +82,7 @@
enum rpc_gss_svc gc_service;
struct gss_cl_ctx *gc_ctx;
struct gss_upcall_msg *gc_upcall;
+ unsigned long gc_upcall_timestamp;
unsigned char gc_machine_cred : 1;
};