--- /dev/null
+/*
+ * 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
+ * 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) 2007, 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/ptllnd_wire.h
+ *
+ * Author: PJ Kirner <pjkirner@clusterfs.com>
+ */
+
+/* Minimum buffer size that any peer will post to receive ptllnd messages */
+#define PTLLND_MIN_BUFFER_SIZE 256
+
+/************************************************************************
+ * Tunable defaults that {u,k}lnds/ptllnd should have in common.
+ */
+
+#define PTLLND_PORTAL 9 /* The same portal PTLPRC used when talking to cray portals */
+#define PTLLND_PID 9 /* The Portals PID */
+#define PTLLND_PEERCREDITS 8 /* concurrent sends to 1 peer */
+
+/* Default buffer size for kernel ptllnds (guaranteed eager) */
+#define PTLLND_MAX_KLND_MSG_SIZE 512
+
+/* Default buffer size for catamount ptllnds (not guaranteed eager) - large
+ * enough to avoid RDMA for anything sent while control is not in liblustre */
+#define PTLLND_MAX_ULND_MSG_SIZE 512
+
+/************************************************************************
+ * Portals LND Wire message format.
+ * These are sent in sender's byte order (i.e. receiver flips).
+ */
+
+#define PTL_RESERVED_MATCHBITS 0x100 /* below this value is reserved
+ * above is for bulk data transfer */
+#define LNET_MSG_MATCHBITS 0 /* the value for the message channel */
+
+typedef struct {
+ lnet_hdr_t kptlim_hdr; /* portals header */
+ char kptlim_payload[0]; /* piggy-backed payload */
+} WIRE_ATTR kptl_immediate_msg_t;
+
+typedef struct {
+ lnet_hdr_t kptlrm_hdr; /* portals header */
+ __u64 kptlrm_matchbits; /* matchbits */
+} WIRE_ATTR kptl_rdma_msg_t;
+
+typedef struct {
+ __u64 kptlhm_matchbits; /* matchbits */
+ __u32 kptlhm_max_msg_size; /* max message size */
+} WIRE_ATTR kptl_hello_msg_t;
+
+typedef struct {
+ /* First 2 fields fixed FOR ALL TIME */
+ __u32 ptlm_magic; /* I'm a Portals LND message */
+ __u16 ptlm_version; /* this is my version number */
+ __u8 ptlm_type; /* the message type */
+ __u8 ptlm_credits; /* returned credits */
+ __u32 ptlm_nob; /* # bytes in whole message */
+ __u32 ptlm_cksum; /* checksum (0 == no checksum) */
+ __u64 ptlm_srcnid; /* sender's NID */
+ __u64 ptlm_srcstamp; /* sender's incarnation */
+ __u64 ptlm_dstnid; /* destination's NID */
+ __u64 ptlm_dststamp; /* destination's incarnation */
+ __u32 ptlm_srcpid; /* sender's PID */
+ __u32 ptlm_dstpid; /* destination's PID */
+
+ union {
+ kptl_immediate_msg_t immediate;
+ kptl_rdma_msg_t rdma;
+ kptl_hello_msg_t hello;
+ } WIRE_ATTR ptlm_u;
+
+} kptl_msg_t;
+
+/* kptl_msg_t::ptlm_credits is only a __u8 */
+#define PTLLND_MSG_MAX_CREDITS ((typeof(((kptl_msg_t *)0)->ptlm_credits)) - 1)
+
+#define PTLLND_MSG_MAGIC LNET_PROTO_PTL_MAGIC
+#define PTLLND_MSG_VERSION 0x04
+
+#define PTLLND_RDMA_OK 0x00
+#define PTLLND_RDMA_FAIL 0x01
+
+#define PTLLND_MSG_TYPE_INVALID 0x00
+#define PTLLND_MSG_TYPE_PUT 0x01
+#define PTLLND_MSG_TYPE_GET 0x02
+#define PTLLND_MSG_TYPE_IMMEDIATE 0x03 /* No bulk data xfer*/
+#define PTLLND_MSG_TYPE_NOOP 0x04
+#define PTLLND_MSG_TYPE_HELLO 0x05
+#define PTLLND_MSG_TYPE_NAK 0x06
Code Review / kvmfornfv.git / blobdiff