-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* 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 [sun.com URL with a
- * copy of GPLv2].
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
+ * version 2 along with this program; If not, see
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
/*
- * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2012, 2016, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#ifndef __LNET_LIB_TYPES_H__
#define __LNET_LIB_TYPES_H__
-#if defined(__linux__)
-#include <lnet/linux/lib-types.h>
-#elif defined(__APPLE__)
-#include <lnet/darwin/lib-types.h>
-#elif defined(__WINNT__)
-#include <lnet/winnt/lib-types.h>
-#else
-#error Unsupported Operating System
+#ifndef __KERNEL__
+# error This include is only for kernel use.
#endif
-#include <libcfs/libcfs.h>
-#include <libcfs/list.h>
-#include <lnet/types.h>
-
-#define WIRE_ATTR __attribute__((packed))
+#include <linux/kthread.h>
+#include <linux/uio.h>
+#include <linux/types.h>
-/* The wire handle's interface cookie only matches one network interface in
- * one epoch (i.e. new cookie when the interface restarts or the node
- * reboots). The object cookie only matches one object on that interface
- * during that object's lifetime (i.e. no cookie re-use). */
-typedef struct {
- __u64 wh_interface_cookie;
- __u64 wh_object_cookie;
-} WIRE_ATTR lnet_handle_wire_t;
-
-/* byte-flip insensitive! */
-#define LNET_WIRE_HANDLE_NONE \
-((const lnet_handle_wire_t) {.wh_interface_cookie = -1, .wh_object_cookie = -1})
-
-typedef enum {
- LNET_MSG_ACK = 0,
- LNET_MSG_PUT,
- LNET_MSG_GET,
- LNET_MSG_REPLY,
- LNET_MSG_HELLO,
-} lnet_msg_type_t;
-
-/* The variant fields of the portals message header are aligned on an 8
- * byte boundary in the message header. Note that all types used in these
- * wire structs MUST be fixed size and the smaller types are placed at the
- * end. */
-typedef struct lnet_ack {
- lnet_handle_wire_t dst_wmd;
- __u64 match_bits;
- __u32 mlength;
-} WIRE_ATTR lnet_ack_t;
-
-typedef struct lnet_put {
- lnet_handle_wire_t ack_wmd;
- __u64 match_bits;
- __u64 hdr_data;
- __u32 ptl_index;
- __u32 offset;
-} WIRE_ATTR lnet_put_t;
-
-typedef struct lnet_get {
- lnet_handle_wire_t return_wmd;
- __u64 match_bits;
- __u32 ptl_index;
- __u32 src_offset;
- __u32 sink_length;
-} WIRE_ATTR lnet_get_t;
-
-typedef struct lnet_reply {
- lnet_handle_wire_t dst_wmd;
-} WIRE_ATTR lnet_reply_t;
-
-typedef struct lnet_hello {
- __u64 incarnation;
- __u32 type;
-} WIRE_ATTR lnet_hello_t;
+#include <lnet/lnetctl.h>
-typedef struct {
- lnet_nid_t dest_nid;
- lnet_nid_t src_nid;
- lnet_pid_t dest_pid;
- lnet_pid_t src_pid;
- __u32 type; /* lnet_msg_type_t */
- __u32 payload_length; /* payload data to follow */
- /*<------__u64 aligned------->*/
- union {
- lnet_ack_t ack;
- lnet_put_t put;
- lnet_get_t get;
- lnet_reply_t reply;
- lnet_hello_t hello;
- } msg;
-} WIRE_ATTR lnet_hdr_t;
-
-/* A HELLO message contains a magic number and protocol version
- * code in the header's dest_nid, the peer's NID in the src_nid, and
- * LNET_MSG_HELLO in the type field. All other common fields are zero
- * (including payload_size; i.e. no payload).
- * This is for use by byte-stream LNDs (e.g. TCP/IP) to check the peer is
- * running the same protocol and to find out its NID. These LNDs should
- * exchange HELLO messages when a connection is first established. Individual
- * LNDs can put whatever else they fancy in lnet_hdr_t::msg.
- */
-typedef struct {
- __u32 magic; /* LNET_PROTO_TCP_MAGIC */
- __u16 version_major; /* increment on incompatible change */
- __u16 version_minor; /* increment on compatible change */
-} WIRE_ATTR lnet_magicversion_t;
-
-/* PROTO MAGIC for LNDs */
-#define LNET_PROTO_IB_MAGIC 0x0be91b91
-#define LNET_PROTO_OPENIB_MAGIC LNET_PROTO_IB_MAGIC
-#define LNET_PROTO_IIB_MAGIC LNET_PROTO_IB_MAGIC
-#define LNET_PROTO_VIB_MAGIC LNET_PROTO_IB_MAGIC
-#define LNET_PROTO_RA_MAGIC 0x0be91b92
-#define LNET_PROTO_QSW_MAGIC 0x0be91b93
-#define LNET_PROTO_TCP_MAGIC 0xeebc0ded
-#define LNET_PROTO_PTL_MAGIC 0x50746C4E /* 'PtlN' unique magic */
-#define LNET_PROTO_GM_MAGIC 0x6d797269 /* 'myri'! */
-#define LNET_PROTO_MX_MAGIC 0x4d583130 /* 'MX10'! */
-#define LNET_PROTO_ACCEPTOR_MAGIC 0xacce7100
-#define LNET_PROTO_PING_MAGIC 0x70696E67 /* 'ping' */
-
-/* Placeholder for a future "unified" protocol across all LNDs */
-/* Current LNDs that receive a request with this magic will respond with a
- * "stub" reply using their current protocol */
-#define LNET_PROTO_MAGIC 0x45726963 /* ! */
-
-
-#define LNET_PROTO_TCP_VERSION_MAJOR 1
-#define LNET_PROTO_TCP_VERSION_MINOR 0
-
-/* Acceptor connection request */
-typedef struct {
- __u32 acr_magic; /* PTL_ACCEPTOR_PROTO_MAGIC */
- __u32 acr_version; /* protocol version */
- __u64 acr_nid; /* target NID */
-} WIRE_ATTR lnet_acceptor_connreq_t;
+/* Max payload size */
+#ifndef CONFIG_LNET_MAX_PAYLOAD
+# error "CONFIG_LNET_MAX_PAYLOAD must be defined in config.h"
+#endif
-#define LNET_PROTO_ACCEPTOR_VERSION 1
+#define LNET_MAX_PAYLOAD CONFIG_LNET_MAX_PAYLOAD
+#if (LNET_MAX_PAYLOAD < LNET_MTU)
+# error "LNET_MAX_PAYLOAD too small - error in configure --with-max-payload-mb"
+#elif (LNET_MAX_PAYLOAD > (PAGE_SIZE * LNET_MAX_IOV))
+# error "LNET_MAX_PAYLOAD too large - error in configure --with-max-payload-mb"
+#endif
/* forward refs */
struct lnet_libmd;
typedef struct lnet_msg {
- struct list_head msg_activelist;
- struct list_head msg_list; /* Q for credits/MD */
-
- lnet_process_id_t msg_target;
- __u32 msg_type;
-
- unsigned int msg_target_is_router:1; /* sending to a router */
- unsigned int msg_routing:1; /* being forwarded */
- unsigned int msg_ack:1; /* ack on finalize (PUT) */
- unsigned int msg_sending:1; /* outgoing message */
- unsigned int msg_receiving:1; /* being received */
- unsigned int msg_delayed:1; /* had to Q for buffer or tx credit */
- unsigned int msg_txcredit:1; /* taken an NI send credit */
- unsigned int msg_peertxcredit:1; /* taken a peer send credit */
- unsigned int msg_rtrcredit:1; /* taken a globel router credit */
- unsigned int msg_peerrtrcredit:1; /* taken a peer router credit */
- unsigned int msg_onactivelist:1; /* on the activelist */
-
- struct lnet_peer *msg_txpeer; /* peer I'm sending to */
- struct lnet_peer *msg_rxpeer; /* peer I received from */
-
- void *msg_private;
- struct lnet_libmd *msg_md;
-
- unsigned int msg_len;
- unsigned int msg_wanted;
- unsigned int msg_offset;
- unsigned int msg_niov;
- struct iovec *msg_iov;
- lnet_kiov_t *msg_kiov;
-
- lnet_event_t msg_ev;
- lnet_hdr_t msg_hdr;
+ struct list_head msg_activelist;
+ struct list_head msg_list; /* Q for credits/MD */
+
+ lnet_process_id_t msg_target;
+ /* where is it from, it's only for building event */
+ lnet_nid_t msg_from;
+ __u32 msg_type;
+
+ /* committed for sending */
+ unsigned int msg_tx_committed:1;
+ /* CPT # this message committed for sending */
+ unsigned int msg_tx_cpt:15;
+ /* committed for receiving */
+ unsigned int msg_rx_committed:1;
+ /* CPT # this message committed for receiving */
+ unsigned int msg_rx_cpt:15;
+ /* queued for tx credit */
+ unsigned int msg_tx_delayed:1;
+ /* queued for RX buffer */
+ unsigned int msg_rx_delayed:1;
+ /* ready for pending on RX delay list */
+ unsigned int msg_rx_ready_delay:1;
+
+ unsigned int msg_vmflush:1; /* VM trying to free memory */
+ unsigned int msg_target_is_router:1; /* sending to a router */
+ unsigned int msg_routing:1; /* being forwarded */
+ unsigned int msg_ack:1; /* ack on finalize (PUT) */
+ unsigned int msg_sending:1; /* outgoing message */
+ unsigned int msg_receiving:1; /* being received */
+ unsigned int msg_txcredit:1; /* taken an NI send credit */
+ unsigned int msg_peertxcredit:1; /* taken a peer send credit */
+ unsigned int msg_rtrcredit:1; /* taken a globel router credit */
+ unsigned int msg_peerrtrcredit:1; /* taken a peer router credit */
+ unsigned int msg_onactivelist:1; /* on the activelist */
+ unsigned int msg_rdma_get:1;
+
+ struct lnet_peer_ni *msg_txpeer; /* peer I'm sending to */
+ struct lnet_peer_ni *msg_rxpeer; /* peer I received from */
+
+ void *msg_private;
+ struct lnet_libmd *msg_md;
+ /* the NI the message was sent or received over */
+ struct lnet_ni *msg_txni;
+ struct lnet_ni *msg_rxni;
+
+ unsigned int msg_len;
+ unsigned int msg_wanted;
+ unsigned int msg_offset;
+ unsigned int msg_niov;
+ struct kvec *msg_iov;
+ lnet_kiov_t *msg_kiov;
+
+ lnet_event_t msg_ev;
+ lnet_hdr_t msg_hdr;
} lnet_msg_t;
typedef struct lnet_libhandle {
- struct list_head lh_hash_chain;
- __u64 lh_cookie;
+ struct list_head lh_hash_chain;
+ __u64 lh_cookie;
} lnet_libhandle_t;
#define lh_entry(ptr, type, member) \
- ((type *)((char *)(ptr)-(unsigned long)(&((type *)0)->member)))
+ ((type *)((char *)(ptr)-(char *)(&((type *)0)->member)))
typedef struct lnet_eq {
- struct list_head eq_list;
- lnet_libhandle_t eq_lh;
- lnet_seq_t eq_enq_seq;
- lnet_seq_t eq_deq_seq;
- unsigned int eq_size;
- lnet_event_t *eq_events;
- int eq_refcount;
- lnet_eq_handler_t eq_callback;
+ struct list_head eq_list;
+ lnet_libhandle_t eq_lh;
+ lnet_seq_t eq_enq_seq;
+ lnet_seq_t eq_deq_seq;
+ unsigned int eq_size;
+ lnet_eq_handler_t eq_callback;
+ lnet_event_t *eq_events;
+ int **eq_refs; /* percpt refcount for EQ */
} lnet_eq_t;
typedef struct lnet_me {
- struct list_head me_list;
- lnet_libhandle_t me_lh;
- lnet_process_id_t me_match_id;
- unsigned int me_portal;
- __u64 me_match_bits;
- __u64 me_ignore_bits;
- lnet_unlink_t me_unlink;
- struct lnet_libmd *me_md;
+ struct list_head me_list;
+ lnet_libhandle_t me_lh;
+ lnet_process_id_t me_match_id;
+ unsigned int me_portal;
+ unsigned int me_pos; /* hash offset in mt_hash */
+ __u64 me_match_bits;
+ __u64 me_ignore_bits;
+ lnet_unlink_t me_unlink;
+ struct lnet_libmd *me_md;
} lnet_me_t;
typedef struct lnet_libmd {
- struct list_head md_list;
- lnet_libhandle_t md_lh;
- lnet_me_t *md_me;
- char *md_start;
- unsigned int md_offset;
- unsigned int md_length;
- unsigned int md_max_size;
- int md_threshold;
- int md_refcount;
- unsigned int md_options;
- unsigned int md_flags;
- void *md_user_ptr;
- lnet_eq_t *md_eq;
- void *md_addrkey;
- unsigned int md_niov; /* # frags */
- union {
- struct iovec iov[LNET_MAX_IOV];
- lnet_kiov_t kiov[LNET_MAX_IOV];
- } md_iov;
+ struct list_head md_list;
+ lnet_libhandle_t md_lh;
+ lnet_me_t *md_me;
+ char *md_start;
+ unsigned int md_offset;
+ unsigned int md_length;
+ unsigned int md_max_size;
+ int md_threshold;
+ int md_refcount;
+ unsigned int md_options;
+ unsigned int md_flags;
+ unsigned int md_niov; /* # frags at end of struct */
+ void *md_user_ptr;
+ lnet_eq_t *md_eq;
+ union {
+ struct kvec iov[LNET_MAX_IOV];
+ lnet_kiov_t kiov[LNET_MAX_IOV];
+ } md_iov;
} lnet_libmd_t;
-#define LNET_MD_FLAG_ZOMBIE (1 << 0)
-#define LNET_MD_FLAG_AUTO_UNLINK (1 << 1)
-
-#ifdef LNET_USE_LIB_FREELIST
-typedef struct
-{
- void *fl_objs; /* single contiguous array of objects */
- int fl_nobjs; /* the number of them */
- int fl_objsize; /* the size (including overhead) of each of them */
- struct list_head fl_list; /* where they are enqueued */
-} lnet_freelist_t;
-
-typedef struct
-{
- struct list_head fo_list; /* enqueue on fl_list */
- void *fo_contents; /* aligned contents */
-} lnet_freeobj_t;
-#endif
+#define LNET_MD_FLAG_ZOMBIE (1 << 0)
+#define LNET_MD_FLAG_AUTO_UNLINK (1 << 1)
+#define LNET_MD_FLAG_ABORTED (1 << 2)
typedef struct {
- /* info about peers we are trying to fail */
- struct list_head tp_list; /* ln_test_peers */
- lnet_nid_t tp_nid; /* matching nid */
- unsigned int tp_threshold; /* # failures to simulate */
+ /* info about peers we are trying to fail */
+ struct list_head tp_list; /* ln_test_peers */
+ lnet_nid_t tp_nid; /* matching nid */
+ unsigned int tp_threshold; /* # failures to simulate */
} lnet_test_peer_t;
#define LNET_COOKIE_TYPE_MD 1
#define LNET_COOKIE_TYPE_ME 2
#define LNET_COOKIE_TYPE_EQ 3
-#define LNET_COOKIE_TYPES 4
-/* LNET_COOKIE_TYPES must be a power of 2, so the cookie type can be
- * extracted by masking with (LNET_COOKIE_TYPES - 1) */
+#define LNET_COOKIE_TYPE_BITS 2
+#define LNET_COOKIE_MASK ((1ULL << LNET_COOKIE_TYPE_BITS) - 1ULL)
-struct lnet_ni; /* forward ref */
+struct lnet_ni; /* forward ref */
+struct socket;
typedef struct lnet_lnd
{
- /* fields managed by portals */
- struct list_head lnd_list; /* stash in the LND table */
- int lnd_refcount; /* # active instances */
-
- /* fields initialised by the LND */
- unsigned int lnd_type;
-
- int (*lnd_startup) (struct lnet_ni *ni);
- void (*lnd_shutdown) (struct lnet_ni *ni);
- int (*lnd_ctl)(struct lnet_ni *ni, unsigned int cmd, void *arg);
-
- /* In data movement APIs below, payload buffers are described as a set
- * of 'niov' fragments which are...
- * EITHER
- * in virtual memory (struct iovec *iov != NULL)
- * OR
- * in pages (kernel only: plt_kiov_t *kiov != NULL).
- * The LND may NOT overwrite these fragment descriptors.
- * An 'offset' and may specify a byte offset within the set of
- * fragments to start from
- */
-
- /* Start sending a preformatted message. 'private' is NULL for PUT and
+ /* fields managed by portals */
+ struct list_head lnd_list; /* stash in the LND table */
+ int lnd_refcount; /* # active instances */
+
+ /* fields initialized by the LND */
+ __u32 lnd_type;
+
+ int (*lnd_startup)(struct lnet_ni *ni);
+ void (*lnd_shutdown)(struct lnet_ni *ni);
+ int (*lnd_ctl)(struct lnet_ni *ni, unsigned int cmd, void *arg);
+
+ /* In data movement APIs below, payload buffers are described as a set
+ * of 'niov' fragments which are...
+ * EITHER
+ * in virtual memory (struct kvec *iov != NULL)
+ * OR
+ * in pages (kernel only: plt_kiov_t *kiov != NULL).
+ * The LND may NOT overwrite these fragment descriptors.
+ * An 'offset' and may specify a byte offset within the set of
+ * fragments to start from
+ */
+
+ /* Start sending a preformatted message. 'private' is NULL for PUT and
* GET messages; otherwise this is a response to an incoming message
* and 'private' is the 'private' passed to lnet_parse(). Return
* non-zero for immediate failure, otherwise complete later with
* lnet_finalize() */
int (*lnd_send)(struct lnet_ni *ni, void *private, lnet_msg_t *msg);
- /* Start receiving 'mlen' bytes of payload data, skipping the following
- * 'rlen' - 'mlen' bytes. 'private' is the 'private' passed to
- * lnet_parse(). Return non-zero for immedaite failure, otherwise
- * complete later with lnet_finalize(). This also gives back a receive
- * credit if the LND does flow control. */
+ /* Start receiving 'mlen' bytes of payload data, skipping the following
+ * 'rlen' - 'mlen' bytes. 'private' is the 'private' passed to
+ * lnet_parse(). Return non-zero for immedaite failure, otherwise
+ * complete later with lnet_finalize(). This also gives back a receive
+ * credit if the LND does flow control. */
int (*lnd_recv)(struct lnet_ni *ni, void *private, lnet_msg_t *msg,
- int delayed, unsigned int niov,
- struct iovec *iov, lnet_kiov_t *kiov,
- unsigned int offset, unsigned int mlen, unsigned int rlen);
-
- /* lnet_parse() has had to delay processing of this message
- * (e.g. waiting for a forwarding buffer or send credits). Give the
- * LND a chance to free urgently needed resources. If called, return 0
- * for success and do NOT give back a receive credit; that has to wait
- * until lnd_recv() gets called. On failure return < 0 and
- * release resources; lnd_recv() will not be called. */
- int (*lnd_eager_recv)(struct lnet_ni *ni, void *private, lnet_msg_t *msg,
- void **new_privatep);
-
- /* notification of peer health */
- void (*lnd_notify)(struct lnet_ni *ni, lnet_nid_t peer, int alive);
-
-#ifdef __KERNEL__
- /* accept a new connection */
- int (*lnd_accept)(struct lnet_ni *ni, cfs_socket_t *sock);
-#else
- /* wait for something to happen */
- void (*lnd_wait)(struct lnet_ni *ni, int milliseconds);
-
- /* ensure non-RDMA messages can be received outside liblustre */
- int (*lnd_setasync)(struct lnet_ni *ni, lnet_process_id_t id, int nasync);
-
-#ifdef HAVE_LIBPTHREAD
- int (*lnd_accept)(struct lnet_ni *ni, int sock);
-#endif
-#endif
+ int delayed, unsigned int niov,
+ struct kvec *iov, lnet_kiov_t *kiov,
+ unsigned int offset, unsigned int mlen, unsigned int rlen);
+
+ /* lnet_parse() has had to delay processing of this message
+ * (e.g. waiting for a forwarding buffer or send credits). Give the
+ * LND a chance to free urgently needed resources. If called, return 0
+ * for success and do NOT give back a receive credit; that has to wait
+ * until lnd_recv() gets called. On failure return < 0 and
+ * release resources; lnd_recv() will not be called. */
+ int (*lnd_eager_recv)(struct lnet_ni *ni, void *private, lnet_msg_t *msg,
+ void **new_privatep);
+
+ /* notification of peer health */
+ void (*lnd_notify)(struct lnet_ni *ni, lnet_nid_t peer, int alive);
+
+ /* query of peer aliveness */
+ void (*lnd_query)(struct lnet_ni *ni, lnet_nid_t peer, cfs_time_t *when);
+
+ /* accept a new connection */
+ int (*lnd_accept)(struct lnet_ni *ni, struct socket *sock);
} lnd_t;
-#define LNET_MAX_INTERFACES 16
+typedef struct lnet_ni_status {
+ lnet_nid_t ns_nid;
+ __u32 ns_status;
+ __u32 ns_unused;
+} WIRE_ATTR lnet_ni_status_t;
+
+struct lnet_tx_queue {
+ int tq_credits; /* # tx credits free */
+ int tq_credits_min; /* lowest it's been */
+ int tq_credits_max; /* total # tx credits */
+ struct list_head tq_delayed; /* delayed TXs */
+};
+
+enum lnet_net_state {
+ /* set when net block is allocated */
+ LNET_NET_STATE_INIT = 0,
+ /* set when NIs in net are started successfully */
+ LNET_NET_STATE_ACTIVE,
+ /* set if all NIs in net are in FAILED state */
+ LNET_NET_STATE_INACTIVE,
+ /* set when shutting down a NET */
+ LNET_NET_STATE_DELETING
+};
+
+enum lnet_ni_state {
+ /* set when NI block is allocated */
+ LNET_NI_STATE_INIT = 0,
+ /* set when NI is started successfully */
+ LNET_NI_STATE_ACTIVE,
+ /* set when LND notifies NI failed */
+ LNET_NI_STATE_FAILED,
+ /* set when LND notifies NI degraded */
+ LNET_NI_STATE_DEGRADED,
+ /* set when shuttding down NI */
+ LNET_NI_STATE_DELETING
+};
+
+struct lnet_net {
+ /* chain on the ln_nets */
+ struct list_head net_list;
+
+ /* net ID, which is compoed of
+ * (net_type << 16) | net_num.
+ * net_type can be one of the enumarated types defined in
+ * lnet/include/lnet/nidstr.h */
+ __u32 net_id;
+
+ /* priority of the network */
+ __u32 net_prio;
+
+ /* total number of CPTs in the array */
+ __u32 net_ncpts;
+
+ /* cumulative CPTs of all NIs in this net */
+ __u32 *net_cpts;
+
+ /* network tunables */
+ struct lnet_ioctl_config_lnd_cmn_tunables net_tunables;
+
+ /*
+ * boolean to indicate that the tunables have been set and
+ * shouldn't be reset
+ */
+ bool net_tunables_set;
+
+ /* procedural interface */
+ lnd_t *net_lnd;
+
+ /* list of NIs on this net */
+ struct list_head net_ni_list;
+
+ /* list of NIs being added, but not started yet */
+ struct list_head net_ni_added;
+
+ /* dying LND instances */
+ struct list_head net_ni_zombie;
+
+ /* network state */
+ enum lnet_net_state net_state;
+};
typedef struct lnet_ni {
- struct list_head ni_list; /* chain on ln_nis */
- struct list_head ni_txq; /* messages waiting for tx credits */
- int ni_maxtxcredits; /* # tx credits */
- int ni_txcredits; /* # tx credits free */
- int ni_mintxcredits; /* lowest it's been */
- int ni_peertxcredits; /* # per-peer send credits */
- lnet_nid_t ni_nid; /* interface's NID */
- void *ni_data; /* instance-specific data */
- lnd_t *ni_lnd; /* procedural interface */
- int ni_refcount; /* reference count */
- char *ni_interfaces[LNET_MAX_INTERFACES]; /* equivalent interfaces to use */
+ /* chain on the lnet_net structure */
+ struct list_head ni_netlist;
+
+ /* chain on net_ni_cpt */
+ struct list_head ni_cptlist;
+
+ spinlock_t ni_lock;
+
+ /* number of CPTs */
+ int ni_ncpts;
+
+ /* bond NI on some CPTs */
+ __u32 *ni_cpts;
+
+ /* interface's NID */
+ lnet_nid_t ni_nid;
+
+ /* instance-specific data */
+ void *ni_data;
+
+ /* percpt TX queues */
+ struct lnet_tx_queue **ni_tx_queues;
+
+ /* percpt reference count */
+ int **ni_refs;
+
+ /* when I was last alive */
+ long ni_last_alive;
+
+ /* pointer to parent network */
+ struct lnet_net *ni_net;
+
+ /* my health status */
+ lnet_ni_status_t *ni_status;
+
+ /* NI FSM */
+ enum lnet_ni_state ni_state;
+
+ /* per NI LND tunables */
+ struct lnet_lnd_tunables ni_lnd_tunables;
+
+ /* lnd tunables set explicitly */
+ bool ni_lnd_tunables_set;
+
+ /* sequence number used to round robin over nis within a net */
+ __u32 ni_seq;
+
+ /*
+ * equivalent interfaces to use
+ * This is an array because socklnd bonding can still be configured
+ */
+ char *ni_interfaces[LNET_MAX_INTERFACES];
+ struct net *ni_net_ns; /* original net namespace */
} lnet_ni_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 */
- time_t lp_timestamp; /* time of last aliveness news */
- time_t lp_ping_timestamp; /* time of last ping attempt */
- time_t lp_ping_deadline; /* != 0 if ping reply expected */
- lnet_ni_t *lp_ni; /* interface peer is on */
- lnet_nid_t lp_nid; /* peer's NID */
- int lp_refcount; /* # refs */
- int lp_rtr_refcount; /* # refs from lnet_route_t::lr_gateway */
-} lnet_peer_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_RTE_DISABLED (1 << 2) /* Routing enabled */
+#define LNET_PING_FEAT_MASK (LNET_PING_FEAT_BASE | \
+ LNET_PING_FEAT_NI_STATUS)
+
+typedef struct lnet_ping_info {
+ __u32 pi_magic;
+ __u32 pi_features;
+ lnet_pid_t pi_pid;
+ __u32 pi_nnis;
+ struct lnet_ni_status 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(struct lnet_ping_info, pi_ni[LNET_MAX_RTR_NIS])
typedef struct {
- struct list_head lr_list; /* chain on net */
- lnet_peer_t *lr_gateway; /* router node */
+ /* 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_ni *rcd_gateway; /* reference to gateway */
+ struct lnet_ping_info *rcd_pinginfo; /* ping buffer */
+} lnet_rc_data_t;
+
+struct lnet_peer_ni {
+ /* cahian on peer_net */
+ struct list_head lpni_on_peer_net_list;
+ /* chain on peer hash */
+ struct list_head lpni_hashlist;
+ /* messages blocking for tx credits */
+ struct list_head lpni_txq;
+ /* messages blocking for router credits */
+ struct list_head lpni_rtrq;
+ /* chain on router list */
+ struct list_head lpni_rtr_list;
+ /* pointer to peer net I'm part of */
+ struct lnet_peer_net *lpni_peer_net;
+ /* # tx credits available */
+ int lpni_txcredits;
+ /* low water mark */
+ int lpni_mintxcredits;
+ /* # router credits */
+ int lpni_rtrcredits;
+ /* low water mark */
+ int lpni_minrtrcredits;
+ /* alive/dead? */
+ unsigned int lpni_alive:1;
+ /* notification outstanding? */
+ unsigned int lpni_notify:1;
+ /* outstanding notification for LND? */
+ unsigned int lpni_notifylnd:1;
+ /* some thread is handling notification */
+ unsigned int lpni_notifying:1;
+ /* SEND event outstanding from ping */
+ unsigned int lpni_ping_notsent;
+ /* # times router went dead<->alive */
+ int lpni_alive_count;
+ /* bytes queued for sending */
+ long lpni_txqnob;
+ /* time of last aliveness news */
+ cfs_time_t lpni_timestamp;
+ /* time of last ping attempt */
+ cfs_time_t lpni_ping_timestamp;
+ /* != 0 if ping reply expected */
+ cfs_time_t lpni_ping_deadline;
+ /* when I was last alive */
+ cfs_time_t lpni_last_alive;
+ /* when lpni_ni was queried last time */
+ cfs_time_t lpni_last_query;
+ /* network peer is on */
+ struct lnet_net *lpni_net;
+ /* peer's NID */
+ lnet_nid_t lpni_nid;
+ /* # refs */
+ atomic_t lpni_refcount;
+ /* CPT this peer attached on */
+ int lpni_cpt;
+ /* # refs from lnet_route_t::lr_gateway */
+ int lpni_rtr_refcount;
+ /* sequence number used to round robin over peer nis within a net */
+ __u32 lpni_seq;
+ /* health flag */
+ bool lpni_healthy;
+ /* returned RC ping features */
+ unsigned int lpni_ping_feats;
+ /* routes on this peer */
+ struct list_head lpni_routes;
+ /* array of preferred local nids */
+ lnet_nid_t *lpni_pref_nids;
+ /* number of preferred NIDs in lnpi_pref_nids */
+ __u32 lpni_pref_nnids;
+ /* router checker state */
+ lnet_rc_data_t *lpni_rcd;
+};
+
+struct lnet_peer {
+ /* chain on global peer list */
+ struct list_head lp_on_lnet_peer_list;
+
+ /* list of peer nets */
+ struct list_head lp_peer_nets;
+
+ /* primary NID of the peer */
+ lnet_nid_t lp_primary_nid;
+
+ /* peer is Multi-Rail enabled peer */
+ bool lp_multi_rail;
+};
+
+struct lnet_peer_net {
+ /* chain on peer block */
+ struct list_head lpn_on_peer_list;
+
+ /* list of peer_nis on this network */
+ struct list_head lpn_peer_nis;
+
+ /* pointer to the peer I'm part of */
+ struct lnet_peer *lpn_peer;
+
+ /* Net ID */
+ __u32 lpn_net_id;
+
+ /* health flag */
+ bool lpn_healthy;
+};
+
+/* 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 */
+ int pt_zombies; /* # zombies to go to deathrow
+ * (and not there yet) */
+ 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)->lpni_net->net_tunables.lct_peer_timeout > 0)
+
+typedef struct {
+ struct list_head lr_list; /* chain on net */
+ struct list_head lr_gwlist; /* chain on gateway */
+ struct lnet_peer_ni *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 */
+ __u32 lr_hops; /* how far I am */
+ unsigned int lr_priority; /* route priority */
} 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 */
- struct list_head lrn_routes; /* routes to me */
- __u32 lrn_net; /* my net number */
- unsigned int lrn_hops; /* how far I am */
+ /* chain on ln_remote_nets_hash */
+ struct list_head lrn_list;
+ /* routes to me */
+ struct list_head lrn_routes;
+ /* my net number */
+ __u32 lrn_net;
} lnet_remotenet_t;
+/** lnet message has credit and can be submitted to lnd for send/receive */
+#define LNET_CREDIT_OK 0
+/** lnet message is waiting for credit */
+#define LNET_CREDIT_WAIT 1
+
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 */
+ /* my free buffer pool */
+ struct list_head rbp_bufs;
+ /* messages blocking for a buffer */
+ struct list_head rbp_msgs;
+ /* # pages in each buffer */
+ int rbp_npages;
+ /* requested number of buffers */
+ int rbp_req_nbuffers;
+ /* # buffers actually allocated */
+ int rbp_nbuffers;
+ /* # free buffers / blocked messages */
+ int rbp_credits;
+ /* low water mark */
+ int rbp_mincredits;
} 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 */
+ 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;
-} lnet_counters_t;
-
-#define LNET_PEER_HASHSIZE 503 /* prime! */
-
-#define LNET_NRBPOOLS 3 /* # different router buffer pools */
-
-#define LNET_PROTO_PING_MATCHBITS 0x8000000000000000LL
-#define LNET_PROTO_PING_VERSION 1
-typedef struct {
- __u32 pi_magic;
- __u32 pi_version;
- lnet_pid_t pi_pid;
- __u32 pi_nnids;
- lnet_nid_t pi_nid[0];
-} WIRE_ATTR lnet_ping_info_t;
+#define LNET_PEER_HASHSIZE 503 /* prime! */
+
+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)
-typedef struct {
- struct list_head ptl_ml; /* match list */
- struct list_head ptl_msgq; /* messages blocking for MD */
- __u64 ptl_msgq_version; /* validity stamp */
- unsigned int 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_cpt;
+ 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 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
+
+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 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];
} lnet_portal_t;
-/* Router Checker */
-/* < 0 == startup error */
-#define LNET_RC_STATE_SHUTDOWN 0 /* not started */
-#define LNET_RC_STATE_RUNNING 1 /* started up OK */
-#define LNET_RC_STATE_STOPTHREAD 2 /* telling thread to stop */
-#define LNET_RC_STATE_UNLINKING 3 /* unlinking RC MD */
-#define LNET_RC_STATE_UNLINKED 4 /* RC's MD has been unlinked */
+#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 */
typedef struct
{
- /* Stuff initialised at LNetInit() */
- int ln_init; /* LNetInit() called? */
- int ln_refcount; /* LNetNIInit/LNetNIFini counter */
- int ln_niinit_self; /* Have I called LNetNIInit myself? */
-
- int ln_ptlcompat; /* do I support talking to portals? */
-
- struct list_head ln_lnds; /* registered LNDs */
-
-#ifdef __KERNEL__
- spinlock_t ln_lock;
- cfs_waitq_t ln_waitq;
- struct semaphore ln_api_mutex;
- struct semaphore ln_lnd_mutex;
-#else
-# ifndef HAVE_LIBPTHREAD
- int ln_lock;
- int ln_api_mutex;
- int ln_lnd_mutex;
-# else
- pthread_cond_t ln_cond;
- pthread_mutex_t ln_lock;
- pthread_mutex_t ln_api_mutex;
- pthread_mutex_t ln_lnd_mutex;
-# endif
-#endif
-
- /* Stuff initialised at LNetNIInit() */
-
- int ln_shutdown; /* shutdown in progress */
- int ln_nportals; /* # portals */
- lnet_portal_t *ln_portals; /* the vector of portals */
-
- lnet_pid_t ln_pid; /* requested pid */
-
- struct list_head ln_nis; /* LND instances */
- lnet_ni_t *ln_loni; /* the loopback NI */
- lnet_ni_t *ln_eqwaitni; /* NI to wait for events in */
- struct list_head ln_zombie_nis; /* dying LND instances */
- int ln_nzombie_nis; /* # of NIs to wait for */
-
- struct list_head ln_remote_nets; /* remote networks with routes to them */
- __u64 ln_remote_nets_version; /* validity stamp */
-
- struct list_head ln_routers; /* list of all known routers */
- __u64 ln_routers_version; /* validity stamp */
-
- struct list_head *ln_peer_hash; /* NID->peer hash */
- int ln_npeers; /* # peers extant */
- int ln_peertable_version; /* /proc validity stamp */
-
- int ln_routing; /* am I a router? */
- lnet_rtrbufpool_t ln_rtrpools[LNET_NRBPOOLS]; /* router buffer pools */
-
- int ln_lh_hash_size; /* size of lib handle hash table */
- struct list_head *ln_lh_hash_table; /* all extant lib handles, this interface */
- __u64 ln_next_object_cookie; /* cookie generator */
- __u64 ln_interface_cookie; /* uniquely identifies this ni in this epoch */
-
- char *ln_network_tokens; /* space for network names */
- int ln_network_tokens_nob;
-
- int ln_testprotocompat; /* test protocol compatibility flags */
-
- struct list_head ln_finalizeq; /* msgs waiting to complete finalizing */
-#ifdef __KERNEL__
- void **ln_finalizers; /* threads doing finalization */
- int ln_nfinalizers; /* max # threads finalizing */
-#else
- int ln_finalizing;
-#endif
- struct list_head ln_test_peers; /* failure simulation */
-
- lnet_handle_md_t ln_ping_target_md;
- lnet_handle_eq_t ln_ping_target_eq;
- lnet_ping_info_t *ln_ping_info;
-
-#ifdef __KERNEL__
- int ln_rc_state; /* router checker startup/shutdown state */
- struct semaphore ln_rc_signal; /* serialise startup/shutdown */
- lnet_handle_eq_t ln_rc_eqh; /* router checker's event queue */
-#endif
-
-#ifdef LNET_USE_LIB_FREELIST
- lnet_freelist_t ln_free_mes;
- lnet_freelist_t ln_free_msgs;
- lnet_freelist_t ln_free_mds;
- lnet_freelist_t ln_free_eqs;
-#endif
- struct list_head ln_active_msgs;
- struct list_head ln_active_mds;
- struct list_head ln_active_eqs;
-
- lnet_counters_t ln_counters;
-
-#ifndef __KERNEL__
- /* Temporary workaround to allow uOSS and test programs force
- * server mode in userspace. The only place where we use it is
- * lnet_prepare(). The only way to turn this flag on is to
- * call lnet_server_mode() */
-
- int ln_server_mode_flag;
-#endif
+ /* 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;
+ /* list of configured or discovered peers */
+ struct list_head ln_peers;
+ /* failure simulation */
+ struct list_head ln_test_peers;
+ struct list_head ln_drop_rules;
+ struct list_head ln_delay_rules;
+ /* LND instances */
+ struct list_head ln_nets;
+ /* the loopback NI */
+ struct lnet_ni *ln_loni;
+ /* network zombie list */
+ struct list_head ln_net_zombie;
+
+ /* 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;
+ struct lnet_ping_info *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;
+ /* 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;
} lnet_t;
#endif
git://git.whamcloud.com / fs / lustre-release.git / blobdiff