4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
27 * This file is part of Lustre, http://www.lustre.org/
29 * lnet/include/lnet/socklnd.h
31 #ifndef __LNET_LNET_SOCKLND_H__
32 #define __LNET_LNET_SOCKLND_H__
34 #include <uapi/linux/lnet/lnet-types.h>
35 #include <uapi/linux/lnet/socklnd.h>
37 struct ksock_hello_msg {
38 __u32 kshm_magic; /* LNET_PROTO_MAGIC */
39 __u32 kshm_version; /* KSOCK_PROTO_V* */
40 struct lnet_nid kshm_src_nid; /* sender's nid */
41 struct lnet_nid kshm_dst_nid; /* destination nid */
42 lnet_pid_t kshm_src_pid; /* sender's pid */
43 lnet_pid_t kshm_dst_pid; /* destination pid */
44 __u64 kshm_src_incarnation; /* sender's incarnation */
45 __u64 kshm_dst_incarnation; /* destination's incarnation */
46 __u32 kshm_ctype; /* SOCKLND_CONN_* */
47 __u32 kshm_nips; /* always sent as zero */
48 __u32 kshm_ips[0]; /* deprecated */
51 struct ksock_hello_msg_nid4 {
52 __u32 kshm_magic; /* LNET_PROTO_MAGIC */
53 __u32 kshm_version; /* KSOCK_PROTO_V* */
54 lnet_nid_t kshm_src_nid; /* sender's nid */
55 lnet_nid_t kshm_dst_nid; /* destination nid */
56 lnet_pid_t kshm_src_pid; /* sender's pid */
57 lnet_pid_t kshm_dst_pid; /* destination pid */
58 __u64 kshm_src_incarnation; /* sender's incarnation */
59 __u64 kshm_dst_incarnation; /* destination's incarnation */
60 __u32 kshm_ctype; /* SOCKLND_CONN_* */
61 __u32 kshm_nips; /* sent as zero */
62 __u32 kshm_ips[0]; /* deprecated */
65 struct ksock_msg_hdr {
66 __u32 ksh_type; /* type of socklnd message */
67 __u32 ksh_csum; /* checksum if != 0 */
68 __u64 ksh_zc_cookies[2]; /* Zero-Copy request/ACK
73 #define KSOCK_MSG_NOOP 0xc0 /* empty */
74 #define KSOCK_MSG_LNET 0xc1 /* lnet msg */
77 struct ksock_msg_hdr ksm_kh;
79 /* case ksm_kh.ksh_type == KSOCK_MSG_NOOP */
81 /* case ksm_kh.ksh_type == KSOCK_MSG_LNET */
82 struct lnet_hdr_nid4 lnetmsg_nid4;
83 /* case ksm_kh.ksh_type == KSOCK_MSG_LNET &&
84 * kshm_version >= KSOCK_PROTO_V4
86 struct lnet_hdr_nid16 lnetmsg_nid16;
89 #define ksm_type ksm_kh.ksh_type
90 #define ksm_csum ksm_kh.ksh_csum
91 #define ksm_zc_cookies ksm_kh.ksh_zc_cookies
93 /* We need to know this number to parse hello msg from ksocklnd in
94 * other LND (usocklnd, for example) */
95 #define KSOCK_PROTO_V2 2
96 #define KSOCK_PROTO_V3 3
97 #define KSOCK_PROTO_V4 4