b=16098

[fs/lustre-release.git] / lustre / include / lustre_import.h

diff --git a/lustre/include/lustre_import.h b/lustre/include/lustre_import.h
index 4eceda9..eba16eb 100644 (file)
--- a/lustre/include/lustre_import.h
+++ b/lustre/include/lustre_import.h
@@ -1,5 +1,37 @@
 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
  * vim:expandtab:shiftwidth=8:tabstop=8:
+ *
+ * GPL HEADER START
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see [sun.com URL with a
+ * copy of GPLv2].
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright  2008 Sun Microsystems, Inc. All rights reserved
+ * Use is subject to license terms.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
  */
 
 #ifndef __IMPORT_H
@@ -8,6 +40,22 @@
 #include <lustre_handles.h>
 #include <lustre/lustre_idl.h>
 
+
+/* Adaptive Timeout stuff */
+#define D_ADAPTTO D_OTHER
+#define AT_BINS 4                  /* "bin" means "N seconds of history" */
+#define AT_FLG_NOHIST 0x1          /* use last reported value only */
+
+struct adaptive_timeout {
+        time_t       at_binstart;         /* bin start time */
+        unsigned int at_hist[AT_BINS];    /* timeout history bins */
+        unsigned int at_flags;
+        unsigned int at_current;          /* current timeout value */
+        unsigned int at_worst_ever;       /* worst-ever timeout value */
+        time_t       at_worst_time;       /* worst-ever timeout timestamp */
+        spinlock_t   at_lock;
+};
+
 enum lustre_imp_state {
         LUSTRE_IMP_CLOSED     = 1,
         LUSTRE_IMP_NEW        = 2,
@@ -48,6 +96,13 @@ struct obd_import_conn {
         __u64                     oic_last_attempt; /* jiffies, 64-bit */
 };
 
+#define IMP_AT_MAX_PORTALS 8
+struct imp_at {
+        int                     iat_portal[IMP_AT_MAX_PORTALS];
+        struct adaptive_timeout iat_net_latency;
+        struct adaptive_timeout iat_service_estimate[IMP_AT_MAX_PORTALS];
+};
+
 struct obd_import {
         struct portals_handle     imp_handle;
         atomic_t                  imp_refcount;
@@ -65,10 +120,14 @@ struct obd_import {
         struct list_head          imp_delayed_list;
 
         struct obd_device        *imp_obd;
+        struct ptlrpc_sec        *imp_sec;
+        struct semaphore          imp_sec_mutex;
+        cfs_time_t                imp_sec_expire;
         cfs_waitq_t               imp_recovery_waitq;
 
         atomic_t                  imp_inflight;
         atomic_t                  imp_replay_inflight;
+        atomic_t                  imp_inval_count;
         enum lustre_imp_state     imp_state;
         int                       imp_generation;
         __u32                     imp_conn_cnt;
@@ -88,7 +147,8 @@ struct obd_import {
         spinlock_t                imp_lock;
 
         /* flags */
-        unsigned int              imp_invalid:1,          /* evicted */
+        unsigned long             imp_no_timeout:1,       /* timeouts are disabled */
+                                  imp_invalid:1,          /* evicted */
                                   imp_deactive:1,         /* administratively disabled */
                                   imp_replayable:1,       /* try to recover the import */
                                   imp_dlm_fake:1,         /* don't run recovery (timeout instead) */
@@ -103,10 +163,15 @@ struct obd_import {
         __u32                     imp_connect_op;
         struct obd_connect_data   imp_connect_data;
         __u64                     imp_connect_flags_orig;
+        int                       imp_connect_error;
 
         __u32                     imp_msg_magic;
+        __u32                     imp_msghdr_flags;       /* adjusted based on server capability */
+
+        struct ptlrpc_request_pool *imp_rq_pool;          /* emergency request pool */
 
-        struct ptlrpc_request_pool *imp_rq_pool; /* emergency request pool */
+        struct imp_at             imp_at;                 /* adaptive timeout data */
+        time_t                    imp_last_reply_time;    /* for health check */
 };
 
 typedef void (*obd_import_callback)(struct obd_import *imp, void *closure,
@@ -125,6 +190,23 @@ void class_unobserve_import(struct obd_import *imp, obd_import_callback cb,
 void class_notify_import_observers(struct obd_import *imp, int event,
                                    void *event_arg);
 
+/* import.c */
+static inline void at_init(struct adaptive_timeout *at, int val, int flags) {
+        memset(at, 0, sizeof(*at));
+        at->at_current = val;
+        at->at_worst_ever = val;
+        at->at_worst_time = cfs_time_current_sec();
+        at->at_flags = flags;
+        spin_lock_init(&at->at_lock);
+}
+static inline int at_get(struct adaptive_timeout *at) {
+        return at->at_current;
+}
+int at_add(struct adaptive_timeout *at, unsigned int val);
+int import_at_get_index(struct obd_import *imp, int portal);
+extern unsigned int at_max;
+#define AT_OFF (at_max == 0)
+
 /* genops.c */
 struct obd_export;
 extern struct obd_import *class_exp2cliimp(struct obd_export *);