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/*
* 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.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
/*
* Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
* Copyright (c) 2012 - 2015, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Lustre is a trademark of Seagate, Inc.
*
* lnet/include/lnet/socklnd.h
*/
#ifndef __LNET_LNET_SOCKLND_H__
#define __LNET_LNET_SOCKLND_H__
#include "types.h"
#define SOCKLND_CONN_NONE (-1)
#define SOCKLND_CONN_ANY 0
#define SOCKLND_CONN_CONTROL 1
#define SOCKLND_CONN_BULK_IN 2
#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 */
lnet_nid_t kshm_src_nid; /* sender's nid */
lnet_nid_t kshm_dst_nid; /* destination nid */
lnet_pid_t kshm_src_pid; /* sender's pid */
lnet_pid_t kshm_dst_pid; /* destination pid */
__u64 kshm_src_incarnation; /* sender's incarnation */
__u64 kshm_dst_incarnation; /* destination's incarnation */
__u32 kshm_ctype; /* connection type */
__u32 kshm_nips; /* # IP addrs */
__u32 kshm_ips[0]; /* IP addrs */
} WIRE_ATTR ksock_hello_msg_t;
typedef struct {
lnet_hdr_t ksnm_hdr; /* lnet hdr */
/*
* 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_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;
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) */
#define KSOCK_PROTO_V2 2
#define KSOCK_PROTO_V3 3
#endif
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