766 lines
25 KiB
C
766 lines
25 KiB
C
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/*
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* GPL HEADER START
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*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 only,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License version 2 for more details (a copy is included
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* in the LICENSE file that accompanied this code).
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*
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* You should have received a copy of the GNU General Public License
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* version 2 along with this program; If not, see
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* http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*
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* GPL HEADER END
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*/
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/*
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* Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
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* Use is subject to license terms.
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*
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* Copyright (c) 2012, Intel Corporation.
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*/
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/*
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* This file is part of Lustre, http://www.lustre.org/
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* Lustre is a trademark of Sun Microsystems, Inc.
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*
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* lnet/include/lnet/lib-types.h
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*
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* Types used by the library side routines that do not need to be
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* exposed to the user application
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*/
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#ifndef __LNET_LIB_TYPES_H__
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#define __LNET_LIB_TYPES_H__
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#include <linux/lnet/linux/lib-types.h>
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#include <linux/libcfs/libcfs.h>
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#include <linux/list.h>
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#include <linux/lnet/types.h>
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#define WIRE_ATTR __attribute__((packed))
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/* Packed version of lnet_process_id_t to transfer via network */
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typedef struct {
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lnet_nid_t nid;
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lnet_pid_t pid; /* node id / process id */
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} WIRE_ATTR lnet_process_id_packed_t;
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/* The wire handle's interface cookie only matches one network interface in
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* one epoch (i.e. new cookie when the interface restarts or the node
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* reboots). The object cookie only matches one object on that interface
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* during that object's lifetime (i.e. no cookie re-use). */
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typedef struct {
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__u64 wh_interface_cookie;
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__u64 wh_object_cookie;
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} WIRE_ATTR lnet_handle_wire_t;
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typedef enum {
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LNET_MSG_ACK = 0,
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LNET_MSG_PUT,
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LNET_MSG_GET,
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LNET_MSG_REPLY,
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LNET_MSG_HELLO,
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} lnet_msg_type_t;
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/* The variant fields of the portals message header are aligned on an 8
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* byte boundary in the message header. Note that all types used in these
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* wire structs MUST be fixed size and the smaller types are placed at the
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* end. */
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typedef struct lnet_ack {
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lnet_handle_wire_t dst_wmd;
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__u64 match_bits;
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__u32 mlength;
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} WIRE_ATTR lnet_ack_t;
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typedef struct lnet_put {
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lnet_handle_wire_t ack_wmd;
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__u64 match_bits;
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__u64 hdr_data;
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__u32 ptl_index;
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__u32 offset;
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} WIRE_ATTR lnet_put_t;
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typedef struct lnet_get {
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lnet_handle_wire_t return_wmd;
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__u64 match_bits;
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__u32 ptl_index;
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__u32 src_offset;
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__u32 sink_length;
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} WIRE_ATTR lnet_get_t;
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typedef struct lnet_reply {
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lnet_handle_wire_t dst_wmd;
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} WIRE_ATTR lnet_reply_t;
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typedef struct lnet_hello {
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__u64 incarnation;
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__u32 type;
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} WIRE_ATTR lnet_hello_t;
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typedef struct {
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lnet_nid_t dest_nid;
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lnet_nid_t src_nid;
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lnet_pid_t dest_pid;
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lnet_pid_t src_pid;
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__u32 type; /* lnet_msg_type_t */
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__u32 payload_length; /* payload data to follow */
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/*<------__u64 aligned------->*/
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union {
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lnet_ack_t ack;
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lnet_put_t put;
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lnet_get_t get;
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lnet_reply_t reply;
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lnet_hello_t hello;
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} msg;
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} WIRE_ATTR lnet_hdr_t;
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/* A HELLO message contains a magic number and protocol version
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* code in the header's dest_nid, the peer's NID in the src_nid, and
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* LNET_MSG_HELLO in the type field. All other common fields are zero
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* (including payload_size; i.e. no payload).
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* This is for use by byte-stream LNDs (e.g. TCP/IP) to check the peer is
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* running the same protocol and to find out its NID. These LNDs should
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* exchange HELLO messages when a connection is first established. Individual
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* LNDs can put whatever else they fancy in lnet_hdr_t::msg.
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*/
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typedef struct {
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__u32 magic; /* LNET_PROTO_TCP_MAGIC */
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__u16 version_major; /* increment on incompatible change */
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__u16 version_minor; /* increment on compatible change */
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} WIRE_ATTR lnet_magicversion_t;
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/* PROTO MAGIC for LNDs */
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#define LNET_PROTO_IB_MAGIC 0x0be91b91
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#define LNET_PROTO_RA_MAGIC 0x0be91b92
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#define LNET_PROTO_QSW_MAGIC 0x0be91b93
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#define LNET_PROTO_GNI_MAGIC 0xb00fbabe /* ask Kim */
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#define LNET_PROTO_TCP_MAGIC 0xeebc0ded
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#define LNET_PROTO_PTL_MAGIC 0x50746C4E /* 'PtlN' unique magic */
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#define LNET_PROTO_MX_MAGIC 0x4d583130 /* 'MX10'! */
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#define LNET_PROTO_ACCEPTOR_MAGIC 0xacce7100
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#define LNET_PROTO_PING_MAGIC 0x70696E67 /* 'ping' */
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/* Placeholder for a future "unified" protocol across all LNDs */
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/* Current LNDs that receive a request with this magic will respond with a
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* "stub" reply using their current protocol */
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#define LNET_PROTO_MAGIC 0x45726963 /* ! */
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#define LNET_PROTO_TCP_VERSION_MAJOR 1
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#define LNET_PROTO_TCP_VERSION_MINOR 0
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/* Acceptor connection request */
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typedef struct {
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__u32 acr_magic; /* PTL_ACCEPTOR_PROTO_MAGIC */
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__u32 acr_version; /* protocol version */
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__u64 acr_nid; /* target NID */
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} WIRE_ATTR lnet_acceptor_connreq_t;
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#define LNET_PROTO_ACCEPTOR_VERSION 1
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/* forward refs */
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struct lnet_libmd;
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typedef struct lnet_msg {
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struct list_head msg_activelist;
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struct list_head msg_list; /* Q for credits/MD */
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lnet_process_id_t msg_target;
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/* where is it from, it's only for building event */
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lnet_nid_t msg_from;
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__u32 msg_type;
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/* commited for sending */
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unsigned int msg_tx_committed:1;
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/* CPT # this message committed for sending */
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unsigned int msg_tx_cpt:15;
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/* commited for receiving */
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unsigned int msg_rx_committed:1;
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/* CPT # this message committed for receiving */
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unsigned int msg_rx_cpt:15;
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/* queued for tx credit */
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unsigned int msg_tx_delayed:1;
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/* queued for RX buffer */
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unsigned int msg_rx_delayed:1;
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/* ready for pending on RX delay list */
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unsigned int msg_rx_ready_delay:1;
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unsigned int msg_vmflush:1; /* VM trying to free memory */
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unsigned int msg_target_is_router:1; /* sending to a router */
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unsigned int msg_routing:1; /* being forwarded */
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unsigned int msg_ack:1; /* ack on finalize (PUT) */
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unsigned int msg_sending:1; /* outgoing message */
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unsigned int msg_receiving:1; /* being received */
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unsigned int msg_txcredit:1; /* taken an NI send credit */
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unsigned int msg_peertxcredit:1; /* taken a peer send credit */
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unsigned int msg_rtrcredit:1; /* taken a globel router credit */
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unsigned int msg_peerrtrcredit:1; /* taken a peer router credit */
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unsigned int msg_onactivelist:1; /* on the activelist */
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struct lnet_peer *msg_txpeer; /* peer I'm sending to */
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struct lnet_peer *msg_rxpeer; /* peer I received from */
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void *msg_private;
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struct lnet_libmd *msg_md;
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unsigned int msg_len;
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unsigned int msg_wanted;
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unsigned int msg_offset;
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unsigned int msg_niov;
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struct iovec *msg_iov;
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lnet_kiov_t *msg_kiov;
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lnet_event_t msg_ev;
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lnet_hdr_t msg_hdr;
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} lnet_msg_t;
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typedef struct lnet_libhandle {
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struct list_head lh_hash_chain;
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__u64 lh_cookie;
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} lnet_libhandle_t;
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#define lh_entry(ptr, type, member) \
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((type *)((char *)(ptr)-(char *)(&((type *)0)->member)))
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typedef struct lnet_eq {
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struct list_head eq_list;
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lnet_libhandle_t eq_lh;
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lnet_seq_t eq_enq_seq;
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lnet_seq_t eq_deq_seq;
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unsigned int eq_size;
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lnet_eq_handler_t eq_callback;
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lnet_event_t *eq_events;
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int **eq_refs; /* percpt refcount for EQ */
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} lnet_eq_t;
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typedef struct lnet_me {
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struct list_head me_list;
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lnet_libhandle_t me_lh;
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lnet_process_id_t me_match_id;
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unsigned int me_portal;
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unsigned int me_pos; /* hash offset in mt_hash */
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__u64 me_match_bits;
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__u64 me_ignore_bits;
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lnet_unlink_t me_unlink;
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struct lnet_libmd *me_md;
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} lnet_me_t;
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typedef struct lnet_libmd {
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struct list_head md_list;
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lnet_libhandle_t md_lh;
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lnet_me_t *md_me;
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char *md_start;
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unsigned int md_offset;
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unsigned int md_length;
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unsigned int md_max_size;
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int md_threshold;
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int md_refcount;
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unsigned int md_options;
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unsigned int md_flags;
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void *md_user_ptr;
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lnet_eq_t *md_eq;
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unsigned int md_niov; /* # frags */
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union {
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struct iovec iov[LNET_MAX_IOV];
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lnet_kiov_t kiov[LNET_MAX_IOV];
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} md_iov;
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} lnet_libmd_t;
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#define LNET_MD_FLAG_ZOMBIE (1 << 0)
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#define LNET_MD_FLAG_AUTO_UNLINK (1 << 1)
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#ifdef LNET_USE_LIB_FREELIST
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typedef struct
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{
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void *fl_objs; /* single contiguous array of objects */
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int fl_nobjs; /* the number of them */
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int fl_objsize; /* the size (including overhead) of each of them */
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struct list_head fl_list; /* where they are enqueued */
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} lnet_freelist_t;
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typedef struct
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{
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struct list_head fo_list; /* enqueue on fl_list */
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void *fo_contents; /* aligned contents */
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} lnet_freeobj_t;
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#endif
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typedef struct {
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/* info about peers we are trying to fail */
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struct list_head tp_list; /* ln_test_peers */
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lnet_nid_t tp_nid; /* matching nid */
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unsigned int tp_threshold; /* # failures to simulate */
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} lnet_test_peer_t;
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#define LNET_COOKIE_TYPE_MD 1
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#define LNET_COOKIE_TYPE_ME 2
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#define LNET_COOKIE_TYPE_EQ 3
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#define LNET_COOKIE_TYPE_BITS 2
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#define LNET_COOKIE_MASK ((1ULL << LNET_COOKIE_TYPE_BITS) - 1ULL)
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struct lnet_ni; /* forward ref */
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typedef struct lnet_lnd
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{
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/* fields managed by portals */
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struct list_head lnd_list; /* stash in the LND table */
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int lnd_refcount; /* # active instances */
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/* fields initialised by the LND */
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unsigned int lnd_type;
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int (*lnd_startup) (struct lnet_ni *ni);
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void (*lnd_shutdown) (struct lnet_ni *ni);
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int (*lnd_ctl)(struct lnet_ni *ni, unsigned int cmd, void *arg);
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/* In data movement APIs below, payload buffers are described as a set
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* of 'niov' fragments which are...
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* EITHER
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* in virtual memory (struct iovec *iov != NULL)
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* OR
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* in pages (kernel only: plt_kiov_t *kiov != NULL).
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* The LND may NOT overwrite these fragment descriptors.
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* An 'offset' and may specify a byte offset within the set of
|
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* fragments to start from
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*/
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/* Start sending a preformatted message. 'private' is NULL for PUT and
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* GET messages; otherwise this is a response to an incoming message
|
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* and 'private' is the 'private' passed to lnet_parse(). Return
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* non-zero for immediate failure, otherwise complete later with
|
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* lnet_finalize() */
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int (*lnd_send)(struct lnet_ni *ni, void *private, lnet_msg_t *msg);
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/* Start receiving 'mlen' bytes of payload data, skipping the following
|
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* 'rlen' - 'mlen' bytes. 'private' is the 'private' passed to
|
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* lnet_parse(). Return non-zero for immedaite failure, otherwise
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* complete later with lnet_finalize(). This also gives back a receive
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* credit if the LND does flow control. */
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int (*lnd_recv)(struct lnet_ni *ni, void *private, lnet_msg_t *msg,
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int delayed, unsigned int niov,
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struct iovec *iov, lnet_kiov_t *kiov,
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unsigned int offset, unsigned int mlen, unsigned int rlen);
|
||
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/* lnet_parse() has had to delay processing of this message
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* (e.g. waiting for a forwarding buffer or send credits). Give the
|
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* LND a chance to free urgently needed resources. If called, return 0
|
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* for success and do NOT give back a receive credit; that has to wait
|
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* until lnd_recv() gets called. On failure return < 0 and
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* release resources; lnd_recv() will not be called. */
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int (*lnd_eager_recv)(struct lnet_ni *ni, void *private, lnet_msg_t *msg,
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void **new_privatep);
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/* notification of peer health */
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||
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void (*lnd_notify)(struct lnet_ni *ni, lnet_nid_t peer, int alive);
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/* query of peer aliveness */
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void (*lnd_query)(struct lnet_ni *ni, lnet_nid_t peer, cfs_time_t *when);
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/* accept a new connection */
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int (*lnd_accept)(struct lnet_ni *ni, socket_t *sock);
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} lnd_t;
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#define LNET_NI_STATUS_UP 0x15aac0de
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#define LNET_NI_STATUS_DOWN 0xdeadface
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#define LNET_NI_STATUS_INVALID 0x00000000
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typedef struct {
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lnet_nid_t ns_nid;
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__u32 ns_status;
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__u32 ns_unused;
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} WIRE_ATTR lnet_ni_status_t;
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struct lnet_tx_queue {
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||
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int tq_credits; /* # tx credits free */
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||
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int tq_credits_min; /* lowest it's been */
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||
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int tq_credits_max; /* total # tx credits */
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||
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struct list_head tq_delayed; /* delayed TXs */
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||
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};
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||
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||
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#define LNET_MAX_INTERFACES 16
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||
|
|
||
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typedef struct lnet_ni {
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||
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spinlock_t ni_lock;
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||
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struct list_head ni_list; /* chain on ln_nis */
|
||
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struct list_head ni_cptlist; /* chain on ln_nis_cpt */
|
||
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int ni_maxtxcredits; /* # tx credits */
|
||
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/* # per-peer send credits */
|
||
|
int ni_peertxcredits;
|
||
|
/* # per-peer router buffer credits */
|
||
|
int ni_peerrtrcredits;
|
||
|
/* seconds to consider peer dead */
|
||
|
int ni_peertimeout;
|
||
|
int ni_ncpts; /* number of CPTs */
|
||
|
__u32 *ni_cpts; /* bond NI on some CPTs */
|
||
|
lnet_nid_t ni_nid; /* interface's NID */
|
||
|
void *ni_data; /* instance-specific data */
|
||
|
lnd_t *ni_lnd; /* procedural interface */
|
||
|
struct lnet_tx_queue **ni_tx_queues; /* percpt TX queues */
|
||
|
int **ni_refs; /* percpt reference count */
|
||
|
long ni_last_alive; /* when I was last alive */
|
||
|
lnet_ni_status_t *ni_status; /* my health status */
|
||
|
/* equivalent interfaces to use */
|
||
|
char *ni_interfaces[LNET_MAX_INTERFACES];
|
||
|
} lnet_ni_t;
|
||
|
|
||
|
#define LNET_PROTO_PING_MATCHBITS 0x8000000000000000LL
|
||
|
|
||
|
/* NB: value of these features equal to LNET_PROTO_PING_VERSION_x
|
||
|
* of old LNet, so there shouldn't be any compatibility issue */
|
||
|
#define LNET_PING_FEAT_INVAL (0) /* no feature */
|
||
|
#define LNET_PING_FEAT_BASE (1 << 0) /* just a ping */
|
||
|
#define LNET_PING_FEAT_NI_STATUS (1 << 1) /* return NI status */
|
||
|
|
||
|
#define LNET_PING_FEAT_MASK (LNET_PING_FEAT_BASE | \
|
||
|
LNET_PING_FEAT_NI_STATUS)
|
||
|
|
||
|
typedef struct {
|
||
|
__u32 pi_magic;
|
||
|
__u32 pi_features;
|
||
|
lnet_pid_t pi_pid;
|
||
|
__u32 pi_nnis;
|
||
|
lnet_ni_status_t pi_ni[0];
|
||
|
} WIRE_ATTR lnet_ping_info_t;
|
||
|
|
||
|
/* router checker data, per router */
|
||
|
#define LNET_MAX_RTR_NIS 16
|
||
|
#define LNET_PINGINFO_SIZE offsetof(lnet_ping_info_t, pi_ni[LNET_MAX_RTR_NIS])
|
||
|
typedef struct {
|
||
|
/* chain on the_lnet.ln_zombie_rcd or ln_deathrow_rcd */
|
||
|
struct list_head rcd_list;
|
||
|
lnet_handle_md_t rcd_mdh; /* ping buffer MD */
|
||
|
struct lnet_peer *rcd_gateway; /* reference to gateway */
|
||
|
lnet_ping_info_t *rcd_pinginfo; /* ping buffer */
|
||
|
} lnet_rc_data_t;
|
||
|
|
||
|
typedef struct lnet_peer {
|
||
|
struct list_head lp_hashlist; /* chain on peer hash */
|
||
|
struct list_head lp_txq; /* messages blocking for tx credits */
|
||
|
struct list_head lp_rtrq; /* messages blocking for router credits */
|
||
|
struct list_head lp_rtr_list; /* chain on router list */
|
||
|
int lp_txcredits; /* # tx credits available */
|
||
|
int lp_mintxcredits; /* low water mark */
|
||
|
int lp_rtrcredits; /* # router credits */
|
||
|
int lp_minrtrcredits; /* low water mark */
|
||
|
unsigned int lp_alive:1; /* alive/dead? */
|
||
|
unsigned int lp_notify:1; /* notification outstanding? */
|
||
|
unsigned int lp_notifylnd:1; /* outstanding notification for LND? */
|
||
|
unsigned int lp_notifying:1; /* some thread is handling notification */
|
||
|
unsigned int lp_ping_notsent; /* SEND event outstanding from ping */
|
||
|
int lp_alive_count; /* # times router went dead<->alive */
|
||
|
long lp_txqnob; /* bytes queued for sending */
|
||
|
cfs_time_t lp_timestamp; /* time of last aliveness news */
|
||
|
cfs_time_t lp_ping_timestamp; /* time of last ping attempt */
|
||
|
cfs_time_t lp_ping_deadline; /* != 0 if ping reply expected */
|
||
|
cfs_time_t lp_last_alive; /* when I was last alive */
|
||
|
cfs_time_t lp_last_query; /* when lp_ni was queried last time */
|
||
|
lnet_ni_t *lp_ni; /* interface peer is on */
|
||
|
lnet_nid_t lp_nid; /* peer's NID */
|
||
|
int lp_refcount; /* # refs */
|
||
|
int lp_cpt; /* CPT this peer attached on */
|
||
|
/* # refs from lnet_route_t::lr_gateway */
|
||
|
int lp_rtr_refcount;
|
||
|
/* returned RC ping features */
|
||
|
unsigned int lp_ping_feats;
|
||
|
struct list_head lp_routes; /* routers on this peer */
|
||
|
lnet_rc_data_t *lp_rcd; /* router checker state */
|
||
|
} lnet_peer_t;
|
||
|
|
||
|
|
||
|
/* peer hash size */
|
||
|
#define LNET_PEER_HASH_BITS 9
|
||
|
#define LNET_PEER_HASH_SIZE (1 << LNET_PEER_HASH_BITS)
|
||
|
|
||
|
/* peer hash table */
|
||
|
struct lnet_peer_table {
|
||
|
int pt_version; /* /proc validity stamp */
|
||
|
int pt_number; /* # peers extant */
|
||
|
struct list_head pt_deathrow; /* zombie peers */
|
||
|
struct list_head *pt_hash; /* NID->peer hash */
|
||
|
};
|
||
|
|
||
|
/* peer aliveness is enabled only on routers for peers in a network where the
|
||
|
* lnet_ni_t::ni_peertimeout has been set to a positive value */
|
||
|
#define lnet_peer_aliveness_enabled(lp) (the_lnet.ln_routing != 0 && \
|
||
|
(lp)->lp_ni->ni_peertimeout > 0)
|
||
|
|
||
|
typedef struct {
|
||
|
struct list_head lr_list; /* chain on net */
|
||
|
struct list_head lr_gwlist; /* chain on gateway */
|
||
|
lnet_peer_t *lr_gateway; /* router node */
|
||
|
__u32 lr_net; /* remote network number */
|
||
|
int lr_seq; /* sequence for round-robin */
|
||
|
unsigned int lr_downis; /* number of down NIs */
|
||
|
unsigned int lr_hops; /* how far I am */
|
||
|
} lnet_route_t;
|
||
|
|
||
|
#define LNET_REMOTE_NETS_HASH_DEFAULT (1U << 7)
|
||
|
#define LNET_REMOTE_NETS_HASH_MAX (1U << 16)
|
||
|
#define LNET_REMOTE_NETS_HASH_SIZE (1 << the_lnet.ln_remote_nets_hbits)
|
||
|
|
||
|
typedef struct {
|
||
|
struct list_head lrn_list; /* chain on ln_remote_nets_hash */
|
||
|
struct list_head lrn_routes; /* routes to me */
|
||
|
__u32 lrn_net; /* my net number */
|
||
|
} lnet_remotenet_t;
|
||
|
|
||
|
typedef struct {
|
||
|
struct list_head rbp_bufs; /* my free buffer pool */
|
||
|
struct list_head rbp_msgs; /* messages blocking for a buffer */
|
||
|
int rbp_npages; /* # pages in each buffer */
|
||
|
int rbp_nbuffers; /* # buffers */
|
||
|
int rbp_credits; /* # free buffers / blocked messages */
|
||
|
int rbp_mincredits; /* low water mark */
|
||
|
} lnet_rtrbufpool_t;
|
||
|
|
||
|
typedef struct {
|
||
|
struct list_head rb_list; /* chain on rbp_bufs */
|
||
|
lnet_rtrbufpool_t *rb_pool; /* owning pool */
|
||
|
lnet_kiov_t rb_kiov[0]; /* the buffer space */
|
||
|
} lnet_rtrbuf_t;
|
||
|
|
||
|
typedef struct {
|
||
|
__u32 msgs_alloc;
|
||
|
__u32 msgs_max;
|
||
|
__u32 errors;
|
||
|
__u32 send_count;
|
||
|
__u32 recv_count;
|
||
|
__u32 route_count;
|
||
|
__u32 drop_count;
|
||
|
__u64 send_length;
|
||
|
__u64 recv_length;
|
||
|
__u64 route_length;
|
||
|
__u64 drop_length;
|
||
|
} WIRE_ATTR lnet_counters_t;
|
||
|
|
||
|
#define LNET_PEER_HASHSIZE 503 /* prime! */
|
||
|
|
||
|
#define LNET_NRBPOOLS 3 /* # different router buffer pools */
|
||
|
|
||
|
enum {
|
||
|
/* Didn't match anything */
|
||
|
LNET_MATCHMD_NONE = (1 << 0),
|
||
|
/* Matched OK */
|
||
|
LNET_MATCHMD_OK = (1 << 1),
|
||
|
/* Must be discarded */
|
||
|
LNET_MATCHMD_DROP = (1 << 2),
|
||
|
/* match and buffer is exhausted */
|
||
|
LNET_MATCHMD_EXHAUSTED = (1 << 3),
|
||
|
/* match or drop */
|
||
|
LNET_MATCHMD_FINISH = (LNET_MATCHMD_OK | LNET_MATCHMD_DROP),
|
||
|
};
|
||
|
|
||
|
/* Options for lnet_portal_t::ptl_options */
|
||
|
#define LNET_PTL_LAZY (1 << 0)
|
||
|
#define LNET_PTL_MATCH_UNIQUE (1 << 1) /* unique match, for RDMA */
|
||
|
#define LNET_PTL_MATCH_WILDCARD (1 << 2) /* wildcard match, request portal */
|
||
|
|
||
|
/* parameter for matching operations (GET, PUT) */
|
||
|
struct lnet_match_info {
|
||
|
__u64 mi_mbits;
|
||
|
lnet_process_id_t mi_id;
|
||
|
unsigned int mi_opc;
|
||
|
unsigned int mi_portal;
|
||
|
unsigned int mi_rlength;
|
||
|
unsigned int mi_roffset;
|
||
|
};
|
||
|
|
||
|
/* ME hash of RDMA portal */
|
||
|
#define LNET_MT_HASH_BITS 8
|
||
|
#define LNET_MT_HASH_SIZE (1 << LNET_MT_HASH_BITS)
|
||
|
#define LNET_MT_HASH_MASK (LNET_MT_HASH_SIZE - 1)
|
||
|
/* we allocate (LNET_MT_HASH_SIZE + 1) entries for lnet_match_table::mt_hash,
|
||
|
* the last entry is reserved for MEs with ignore-bits */
|
||
|
#define LNET_MT_HASH_IGNORE LNET_MT_HASH_SIZE
|
||
|
/* __u64 has 2^6 bits, so need 2^(LNET_MT_HASH_BITS - LNET_MT_BITS_U64) which
|
||
|
* is 4 __u64s as bit-map, and add an extra __u64 (only use one bit) for the
|
||
|
* ME-list with ignore-bits, which is mtable::mt_hash[LNET_MT_HASH_IGNORE] */
|
||
|
#define LNET_MT_BITS_U64 6 /* 2^6 bits */
|
||
|
#define LNET_MT_EXHAUSTED_BITS (LNET_MT_HASH_BITS - LNET_MT_BITS_U64)
|
||
|
#define LNET_MT_EXHAUSTED_BMAP ((1 << LNET_MT_EXHAUSTED_BITS) + 1)
|
||
|
|
||
|
/* portal match table */
|
||
|
struct lnet_match_table {
|
||
|
/* reserved for upcoming patches, CPU partition ID */
|
||
|
unsigned int mt_cpt;
|
||
|
unsigned int mt_portal; /* portal index */
|
||
|
/* match table is set as "enabled" if there's non-exhausted MD
|
||
|
* attached on mt_mhash, it's only valide for wildcard portal */
|
||
|
unsigned int mt_enabled;
|
||
|
/* bitmap to flag whether MEs on mt_hash are exhausted or not */
|
||
|
__u64 mt_exhausted[LNET_MT_EXHAUSTED_BMAP];
|
||
|
struct list_head *mt_mhash; /* matching hash */
|
||
|
};
|
||
|
|
||
|
/* these are only useful for wildcard portal */
|
||
|
/* Turn off message rotor for wildcard portals */
|
||
|
#define LNET_PTL_ROTOR_OFF 0
|
||
|
/* round-robin dispatch all PUT messages for wildcard portals */
|
||
|
#define LNET_PTL_ROTOR_ON 1
|
||
|
/* round-robin dispatch routed PUT message for wildcard portals */
|
||
|
#define LNET_PTL_ROTOR_RR_RT 2
|
||
|
/* dispatch routed PUT message by hashing source NID for wildcard portals */
|
||
|
#define LNET_PTL_ROTOR_HASH_RT 3
|
||
|
|
||
|
typedef struct lnet_portal {
|
||
|
spinlock_t ptl_lock;
|
||
|
unsigned int ptl_index; /* portal ID, reserved */
|
||
|
/* flags on this portal: lazy, unique... */
|
||
|
unsigned int ptl_options;
|
||
|
/* list of messags which are stealing buffer */
|
||
|
struct list_head ptl_msg_stealing;
|
||
|
/* messages blocking for MD */
|
||
|
struct list_head ptl_msg_delayed;
|
||
|
/* Match table for each CPT */
|
||
|
struct lnet_match_table **ptl_mtables;
|
||
|
/* spread rotor of incoming "PUT" */
|
||
|
int ptl_rotor;
|
||
|
/* # active entries for this portal */
|
||
|
int ptl_mt_nmaps;
|
||
|
/* array of active entries' cpu-partition-id */
|
||
|
int ptl_mt_maps[0];
|
||
|
} lnet_portal_t;
|
||
|
|
||
|
#define LNET_LH_HASH_BITS 12
|
||
|
#define LNET_LH_HASH_SIZE (1ULL << LNET_LH_HASH_BITS)
|
||
|
#define LNET_LH_HASH_MASK (LNET_LH_HASH_SIZE - 1)
|
||
|
|
||
|
/* resource container (ME, MD, EQ) */
|
||
|
struct lnet_res_container {
|
||
|
unsigned int rec_type; /* container type */
|
||
|
__u64 rec_lh_cookie; /* cookie generator */
|
||
|
struct list_head rec_active; /* active resource list */
|
||
|
struct list_head *rec_lh_hash; /* handle hash */
|
||
|
#ifdef LNET_USE_LIB_FREELIST
|
||
|
lnet_freelist_t rec_freelist; /* freelist for resources */
|
||
|
#endif
|
||
|
};
|
||
|
|
||
|
/* message container */
|
||
|
struct lnet_msg_container {
|
||
|
int msc_init; /* initialized or not */
|
||
|
/* max # threads finalizing */
|
||
|
int msc_nfinalizers;
|
||
|
/* msgs waiting to complete finalizing */
|
||
|
struct list_head msc_finalizing;
|
||
|
struct list_head msc_active; /* active message list */
|
||
|
/* threads doing finalization */
|
||
|
void **msc_finalizers;
|
||
|
#ifdef LNET_USE_LIB_FREELIST
|
||
|
lnet_freelist_t msc_freelist; /* freelist for messages */
|
||
|
#endif
|
||
|
};
|
||
|
|
||
|
/* Router Checker states */
|
||
|
#define LNET_RC_STATE_SHUTDOWN 0 /* not started */
|
||
|
#define LNET_RC_STATE_RUNNING 1 /* started up OK */
|
||
|
#define LNET_RC_STATE_STOPPING 2 /* telling thread to stop */
|
||
|
|
||
|
typedef struct
|
||
|
{
|
||
|
/* CPU partition table of LNet */
|
||
|
struct cfs_cpt_table *ln_cpt_table;
|
||
|
/* number of CPTs in ln_cpt_table */
|
||
|
unsigned int ln_cpt_number;
|
||
|
unsigned int ln_cpt_bits;
|
||
|
|
||
|
/* protect LNet resources (ME/MD/EQ) */
|
||
|
struct cfs_percpt_lock *ln_res_lock;
|
||
|
/* # portals */
|
||
|
int ln_nportals;
|
||
|
/* the vector of portals */
|
||
|
lnet_portal_t **ln_portals;
|
||
|
/* percpt ME containers */
|
||
|
struct lnet_res_container **ln_me_containers;
|
||
|
/* percpt MD container */
|
||
|
struct lnet_res_container **ln_md_containers;
|
||
|
|
||
|
/* Event Queue container */
|
||
|
struct lnet_res_container ln_eq_container;
|
||
|
wait_queue_head_t ln_eq_waitq;
|
||
|
spinlock_t ln_eq_wait_lock;
|
||
|
unsigned int ln_remote_nets_hbits;
|
||
|
|
||
|
/* protect NI, peer table, credits, routers, rtrbuf... */
|
||
|
struct cfs_percpt_lock *ln_net_lock;
|
||
|
/* percpt message containers for active/finalizing/freed message */
|
||
|
struct lnet_msg_container **ln_msg_containers;
|
||
|
lnet_counters_t **ln_counters;
|
||
|
struct lnet_peer_table **ln_peer_tables;
|
||
|
/* failure simulation */
|
||
|
struct list_head ln_test_peers;
|
||
|
|
||
|
struct list_head ln_nis; /* LND instances */
|
||
|
/* NIs bond on specific CPT(s) */
|
||
|
struct list_head ln_nis_cpt;
|
||
|
/* dying LND instances */
|
||
|
struct list_head ln_nis_zombie;
|
||
|
lnet_ni_t *ln_loni; /* the loopback NI */
|
||
|
/* NI to wait for events in */
|
||
|
lnet_ni_t *ln_eq_waitni;
|
||
|
|
||
|
/* remote networks with routes to them */
|
||
|
struct list_head *ln_remote_nets_hash;
|
||
|
/* validity stamp */
|
||
|
__u64 ln_remote_nets_version;
|
||
|
/* list of all known routers */
|
||
|
struct list_head ln_routers;
|
||
|
/* validity stamp */
|
||
|
__u64 ln_routers_version;
|
||
|
/* percpt router buffer pools */
|
||
|
lnet_rtrbufpool_t **ln_rtrpools;
|
||
|
|
||
|
lnet_handle_md_t ln_ping_target_md;
|
||
|
lnet_handle_eq_t ln_ping_target_eq;
|
||
|
lnet_ping_info_t *ln_ping_info;
|
||
|
|
||
|
/* router checker startup/shutdown state */
|
||
|
int ln_rc_state;
|
||
|
/* router checker's event queue */
|
||
|
lnet_handle_eq_t ln_rc_eqh;
|
||
|
/* rcd still pending on net */
|
||
|
struct list_head ln_rcd_deathrow;
|
||
|
/* rcd ready for free */
|
||
|
struct list_head ln_rcd_zombie;
|
||
|
/* serialise startup/shutdown */
|
||
|
struct semaphore ln_rc_signal;
|
||
|
|
||
|
struct mutex ln_api_mutex;
|
||
|
struct mutex ln_lnd_mutex;
|
||
|
int ln_init; /* LNetInit() called? */
|
||
|
/* Have I called LNetNIInit myself? */
|
||
|
int ln_niinit_self;
|
||
|
/* LNetNIInit/LNetNIFini counter */
|
||
|
int ln_refcount;
|
||
|
/* shutdown in progress */
|
||
|
int ln_shutdown;
|
||
|
|
||
|
int ln_routing; /* am I a router? */
|
||
|
lnet_pid_t ln_pid; /* requested pid */
|
||
|
/* uniquely identifies this ni in this epoch */
|
||
|
__u64 ln_interface_cookie;
|
||
|
/* registered LNDs */
|
||
|
struct list_head ln_lnds;
|
||
|
|
||
|
/* space for network names */
|
||
|
char *ln_network_tokens;
|
||
|
int ln_network_tokens_nob;
|
||
|
/* test protocol compatibility flags */
|
||
|
int ln_testprotocompat;
|
||
|
|
||
|
} lnet_t;
|
||
|
|
||
|
#endif
|