LU-6068 misc: update old URLs to hpdd.intel.com

[fs/lustre-release.git] / lnet / include / lnet / socklnd.h

diff --git a/lnet/include/lnet/socklnd.h b/lnet/include/lnet/socklnd.h
index fbeea15..1271344 100644 (file)
--- a/lnet/include/lnet/socklnd.h
+++ b/lnet/include/lnet/socklnd.h
@@ -1,7 +1,37 @@
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
+/*
+ * GPL HEADER START
  *
- * <lnet/socklnd.h>
+ * 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
+ * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
+ *
+ * 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 (c) 2003, 2010, Oracle and/or its affiliates. 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.
+ *
+ * lnet/include/lnet/socklnd.h
  *
  * #defines shared between socknal implementation and utilities
  */
@@ -9,7 +39,6 @@
 #define __LNET_LNET_SOCKLND_H__
 
 #include <lnet/types.h>
-#include <lnet/lib-types.h>
 
 #define SOCKLND_CONN_NONE     (-1)
 #define SOCKLND_CONN_ANY        0
@@ -18,6 +47,8 @@
 #define SOCKLND_CONN_BULK_OUT   3
 #define SOCKLND_CONN_NTYPES     4
 
+#define SOCKLND_CONN_ACK        SOCKLND_CONN_BULK_IN
+
 typedef struct {
         __u32                   kshm_magic;     /* magic number of socklnd message */
         __u32                   kshm_version;   /* version of socklnd message */
@@ -34,24 +65,38 @@ typedef struct {
 
 typedef struct {
         lnet_hdr_t              ksnm_hdr;       /* lnet hdr */
-        char                    ksnm_payload[0];/* lnet payload */
+
+        /*
+         * ksnm_payload is removed because of winnt compiler's limitation:
+         * zero-sized array can only be placed at the tail of [nested]
+         * structure definitions. lnet payload will be stored just after
+        * the body of structure ksock_lnet_msg_t
+         */
 } WIRE_ATTR ksock_lnet_msg_t;
 
 typedef struct {
         __u32                   ksm_type;       /* type of socklnd message */
         __u32                   ksm_csum;       /* checksum if != 0 */
-        __u64                   ksm_zc_req_cookie; /* ack required if != 0 */
-        __u64                   ksm_zc_ack_cookie; /* ack if != 0 */
+        __u64                   ksm_zc_cookies[2]; /* Zero-Copy request/ACK cookie */
         union {
                 ksock_lnet_msg_t lnetmsg;       /* lnet message, it's empty if it's NOOP */
         } WIRE_ATTR ksm_u;
 } WIRE_ATTR ksock_msg_t;
 
-#define KSOCK_MSG_NOOP          0xc0            /* ksm_u empty */ 
+static inline void
+socklnd_init_msg(ksock_msg_t *msg, int type)
+{
+        msg->ksm_csum           = 0;
+        msg->ksm_type           = type;
+        msg->ksm_zc_cookies[0]  = msg->ksm_zc_cookies[1]  = 0;
+}
+
+#define KSOCK_MSG_NOOP          0xc0            /* ksm_u empty */
 #define KSOCK_MSG_LNET          0xc1            /* lnet msg */
 
 /* We need to know this number to parse hello msg from ksocklnd in
- * other LND (usocklnd, for example) */ 
+ * other LND (usocklnd, for example) */
 #define KSOCK_PROTO_V2          2
+#define KSOCK_PROTO_V3          3
 
 #endif