| /* |
| * 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 |
