654 lines
21 KiB
C
654 lines
21 KiB
C
/*
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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.gnu.org/licenses/gpl-2.0.html
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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, 2015, 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 Seagate, Inc.
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*
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* lnet/include/lnet/lib-types.h
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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/kthread.h>
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#include <linux/uio.h>
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#include <linux/types.h>
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#include <linux/completion.h>
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#include "types.h"
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#include "lnetctl.h"
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/* Max payload size */
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#define LNET_MAX_PAYLOAD CONFIG_LNET_MAX_PAYLOAD
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#if (LNET_MAX_PAYLOAD < LNET_MTU)
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# error "LNET_MAX_PAYLOAD too small - error in configure --with-max-payload-mb"
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#elif (LNET_MAX_PAYLOAD > (PAGE_SIZE * LNET_MAX_IOV))
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# error "LNET_MAX_PAYLOAD too large - error in configure --with-max-payload-mb"
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#endif
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/* forward refs */
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struct lnet_libmd;
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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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struct lnet_process_id 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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/* committed 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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/* committed 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 global 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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unsigned int msg_rdma_get:1;
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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 kvec *msg_iov;
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struct bio_vec *msg_kiov;
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struct lnet_event msg_ev;
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struct lnet_hdr msg_hdr;
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};
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struct lnet_libhandle {
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struct list_head lh_hash_chain;
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__u64 lh_cookie;
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};
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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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struct lnet_eq {
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struct list_head eq_list;
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struct lnet_libhandle eq_lh;
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unsigned long eq_enq_seq;
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unsigned long 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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struct lnet_event *eq_events;
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int **eq_refs; /* percpt refcount for EQ */
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};
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struct lnet_me {
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struct list_head me_list;
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struct lnet_libhandle me_lh;
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struct lnet_process_id 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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enum lnet_unlink me_unlink;
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struct lnet_libmd *me_md;
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};
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struct lnet_libmd {
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struct list_head md_list;
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struct lnet_libhandle md_lh;
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struct lnet_me *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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struct lnet_eq *md_eq;
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unsigned int md_niov; /* # frags */
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union {
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struct kvec iov[LNET_MAX_IOV];
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struct bio_vec kiov[LNET_MAX_IOV];
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} md_iov;
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};
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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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#define LNET_MD_FLAG_ABORTED (1 << 2)
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struct lnet_test_peer {
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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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};
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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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struct lnet_lnd {
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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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__u32 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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/*
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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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/*
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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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*/
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int (*lnd_send)(struct lnet_ni *ni, void *private,
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struct lnet_msg *msg);
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/*
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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 immediate 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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*/
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int (*lnd_recv)(struct lnet_ni *ni, void *private, struct lnet_msg *msg,
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int delayed, struct iov_iter *to, unsigned int rlen);
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/*
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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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*/
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int (*lnd_eager_recv)(struct lnet_ni *ni, void *private,
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struct lnet_msg *msg, void **new_privatep);
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/* notification of peer health */
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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,
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unsigned long *when);
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/* accept a new connection */
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int (*lnd_accept)(struct lnet_ni *ni, struct socket *sock);
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};
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struct lnet_tx_queue {
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int tq_credits; /* # tx credits free */
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int tq_credits_min; /* lowest it's been */
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int tq_credits_max; /* total # tx credits */
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struct list_head tq_delayed; /* delayed TXs */
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};
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struct lnet_ni {
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spinlock_t ni_lock;
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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 */
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int ni_peertxcredits;
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/* # per-peer router buffer credits */
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int ni_peerrtrcredits;
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/* seconds to consider peer dead */
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int ni_peertimeout;
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int ni_ncpts; /* number of CPTs */
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__u32 *ni_cpts; /* bond NI on some CPTs */
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lnet_nid_t ni_nid; /* interface's NID */
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void *ni_data; /* instance-specific data */
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struct lnet_lnd *ni_lnd; /* procedural interface */
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struct lnet_tx_queue **ni_tx_queues; /* percpt TX queues */
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int **ni_refs; /* percpt reference count */
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time64_t ni_last_alive;/* when I was last alive */
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struct lnet_ni_status *ni_status; /* my health status */
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/* per NI LND tunables */
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struct lnet_ioctl_config_lnd_tunables *ni_lnd_tunables;
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/* equivalent interfaces to use */
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char *ni_interfaces[LNET_MAX_INTERFACES];
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/* original net namespace */
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struct net *ni_net_ns;
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};
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#define LNET_PROTO_PING_MATCHBITS 0x8000000000000000LL
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/*
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* NB: value of these features equal to LNET_PROTO_PING_VERSION_x
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* of old LNet, so there shouldn't be any compatibility issue
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*/
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#define LNET_PING_FEAT_INVAL (0) /* no feature */
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#define LNET_PING_FEAT_BASE (1 << 0) /* just a ping */
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#define LNET_PING_FEAT_NI_STATUS (1 << 1) /* return NI status */
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#define LNET_PING_FEAT_RTE_DISABLED (1 << 2) /* Routing enabled */
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#define LNET_PING_FEAT_MASK (LNET_PING_FEAT_BASE | \
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LNET_PING_FEAT_NI_STATUS)
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/* router checker data, per router */
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#define LNET_MAX_RTR_NIS 16
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#define LNET_PINGINFO_SIZE offsetof(struct lnet_ping_info, pi_ni[LNET_MAX_RTR_NIS])
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struct lnet_rc_data {
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/* chain on the_lnet.ln_zombie_rcd or ln_deathrow_rcd */
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struct list_head rcd_list;
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struct lnet_handle_md rcd_mdh; /* ping buffer MD */
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struct lnet_peer *rcd_gateway; /* reference to gateway */
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struct lnet_ping_info *rcd_pinginfo; /* ping buffer */
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};
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struct lnet_peer {
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struct list_head lp_hashlist; /* chain on peer hash */
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struct list_head lp_txq; /* messages blocking for
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tx credits */
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struct list_head lp_rtrq; /* messages blocking for
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router credits */
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struct list_head lp_rtr_list; /* chain on router list */
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int lp_txcredits; /* # tx credits available */
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int lp_mintxcredits; /* low water mark */
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int lp_rtrcredits; /* # router credits */
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int lp_minrtrcredits; /* low water mark */
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unsigned int lp_alive:1; /* alive/dead? */
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unsigned int lp_notify:1; /* notification outstanding? */
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unsigned int lp_notifylnd:1;/* outstanding notification
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for LND? */
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unsigned int lp_notifying:1; /* some thread is handling
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notification */
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unsigned int lp_ping_notsent;/* SEND event outstanding
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from ping */
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int lp_alive_count; /* # times router went
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dead<->alive */
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long lp_txqnob; /* bytes queued for sending */
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unsigned long lp_timestamp; /* time of last aliveness
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news */
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unsigned long lp_ping_timestamp;/* time of last ping
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attempt */
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unsigned long lp_ping_deadline; /* != 0 if ping reply
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expected */
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unsigned long lp_last_alive; /* when I was last alive */
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unsigned long lp_last_query; /* when lp_ni was queried
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last time */
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struct lnet_ni *lp_ni; /* interface peer is on */
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lnet_nid_t lp_nid; /* peer's NID */
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int lp_refcount; /* # refs */
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int lp_cpt; /* CPT this peer attached on */
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/* # refs from lnet_route::lr_gateway */
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int lp_rtr_refcount;
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/* returned RC ping features */
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unsigned int lp_ping_feats;
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struct list_head lp_routes; /* routers on this peer */
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struct lnet_rc_data *lp_rcd; /* router checker state */
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};
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/* peer hash size */
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#define LNET_PEER_HASH_BITS 9
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#define LNET_PEER_HASH_SIZE (1 << LNET_PEER_HASH_BITS)
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/* peer hash table */
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struct lnet_peer_table {
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int pt_version; /* /proc validity stamp */
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int pt_number; /* # peers extant */
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/* # zombies to go to deathrow (and not there yet) */
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int pt_zombies;
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struct list_head pt_deathrow; /* zombie peers */
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struct list_head *pt_hash; /* NID->peer hash */
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};
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/*
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* peer aliveness is enabled only on routers for peers in a network where the
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* lnet_ni::ni_peertimeout has been set to a positive value
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*/
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#define lnet_peer_aliveness_enabled(lp) (the_lnet.ln_routing && \
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(lp)->lp_ni->ni_peertimeout > 0)
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struct lnet_route {
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struct list_head lr_list; /* chain on net */
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struct list_head lr_gwlist; /* chain on gateway */
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struct lnet_peer *lr_gateway; /* router node */
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__u32 lr_net; /* remote network number */
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int lr_seq; /* sequence for round-robin */
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unsigned int lr_downis; /* number of down NIs */
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__u32 lr_hops; /* how far I am */
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unsigned int lr_priority; /* route priority */
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};
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#define LNET_REMOTE_NETS_HASH_DEFAULT (1U << 7)
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#define LNET_REMOTE_NETS_HASH_MAX (1U << 16)
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#define LNET_REMOTE_NETS_HASH_SIZE (1 << the_lnet.ln_remote_nets_hbits)
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struct lnet_remotenet {
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struct list_head lrn_list; /* chain on
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ln_remote_nets_hash */
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struct list_head lrn_routes; /* routes to me */
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__u32 lrn_net; /* my net number */
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};
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/** lnet message has credit and can be submitted to lnd for send/receive */
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#define LNET_CREDIT_OK 0
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/** lnet message is waiting for credit */
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#define LNET_CREDIT_WAIT 1
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struct lnet_rtrbufpool {
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struct list_head rbp_bufs; /* my free buffer pool */
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struct list_head rbp_msgs; /* messages blocking
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for a buffer */
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int rbp_npages; /* # pages in each buffer */
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/* requested number of buffers */
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int rbp_req_nbuffers;
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/* # buffers actually allocated */
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int rbp_nbuffers;
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int rbp_credits; /* # free buffers /
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blocked messages */
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int rbp_mincredits; /* low water mark */
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};
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struct lnet_rtrbuf {
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struct list_head rb_list; /* chain on rbp_bufs */
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struct lnet_rtrbufpool *rb_pool; /* owning pool */
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struct bio_vec rb_kiov[0]; /* the buffer space */
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};
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#define LNET_PEER_HASHSIZE 503 /* prime! */
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#define LNET_TINY_BUF_IDX 0
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#define LNET_SMALL_BUF_IDX 1
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#define LNET_LARGE_BUF_IDX 2
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/* # different router buffer pools */
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#define LNET_NRBPOOLS (LNET_LARGE_BUF_IDX + 1)
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enum lnet_match_flags {
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/* Didn't match anything */
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LNET_MATCHMD_NONE = (1 << 0),
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/* Matched OK */
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LNET_MATCHMD_OK = (1 << 1),
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/* Must be discarded */
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LNET_MATCHMD_DROP = (1 << 2),
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/* match and buffer is exhausted */
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LNET_MATCHMD_EXHAUSTED = (1 << 3),
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/* match or drop */
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LNET_MATCHMD_FINISH = (LNET_MATCHMD_OK | LNET_MATCHMD_DROP),
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};
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/* Options for lnet_portal::ptl_options */
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#define LNET_PTL_LAZY (1 << 0)
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#define LNET_PTL_MATCH_UNIQUE (1 << 1) /* unique match, for RDMA */
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#define LNET_PTL_MATCH_WILDCARD (1 << 2) /* wildcard match,
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request portal */
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/* parameter for matching operations (GET, PUT) */
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struct lnet_match_info {
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__u64 mi_mbits;
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struct lnet_process_id mi_id;
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unsigned int mi_opc;
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unsigned int mi_portal;
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unsigned int mi_rlength;
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unsigned int mi_roffset;
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};
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/* ME hash of RDMA portal */
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#define LNET_MT_HASH_BITS 8
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#define LNET_MT_HASH_SIZE (1 << LNET_MT_HASH_BITS)
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#define LNET_MT_HASH_MASK (LNET_MT_HASH_SIZE - 1)
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/*
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* 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 valid 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
|
|
|
|
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 messages 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" */
|
|
unsigned int ptl_rotor;
|
|
/* # active entries for this portal */
|
|
int ptl_mt_nmaps;
|
|
/* array of active entries' cpu-partition-id */
|
|
int ptl_mt_maps[0];
|
|
};
|
|
|
|
#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 */
|
|
};
|
|
|
|
/* 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;
|
|
};
|
|
|
|
/* 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 */
|
|
|
|
struct lnet {
|
|
/* 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 */
|
|
struct lnet_portal **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;
|
|
struct lnet_counters **ln_counters;
|
|
struct lnet_peer_table **ln_peer_tables;
|
|
/* failure simulation */
|
|
struct list_head ln_test_peers;
|
|
struct list_head ln_drop_rules;
|
|
struct list_head ln_delay_rules;
|
|
|
|
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;
|
|
struct lnet_ni *ln_loni; /* the loopback NI */
|
|
|
|
/* 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 */
|
|
struct lnet_rtrbufpool **ln_rtrpools;
|
|
|
|
struct lnet_handle_md ln_ping_target_md;
|
|
struct lnet_handle_eq ln_ping_target_eq;
|
|
struct lnet_ping_info *ln_ping_info;
|
|
|
|
/* router checker startup/shutdown state */
|
|
int ln_rc_state;
|
|
/* router checker's event queue */
|
|
struct lnet_handle_eq 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 completion ln_rc_signal;
|
|
|
|
struct mutex ln_api_mutex;
|
|
struct mutex ln_lnd_mutex;
|
|
struct mutex ln_delay_mutex;
|
|
/* 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;
|
|
|
|
/* test protocol compatibility flags */
|
|
int ln_testprotocompat;
|
|
|
|
/*
|
|
* 0 - load the NIs from the mod params
|
|
* 1 - do not load the NIs from the mod params
|
|
* Reverse logic to ensure that other calls to LNetNIInit
|
|
* need no change
|
|
*/
|
|
bool ln_nis_from_mod_params;
|
|
|
|
/*
|
|
* waitq for router checker. As long as there are no routes in
|
|
* the list, the router checker will sleep on this queue. when
|
|
* routes are added the thread will wake up
|
|
*/
|
|
wait_queue_head_t ln_rc_waitq;
|
|
|
|
};
|
|
|
|
#endif
|