-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
+/*
+ * GPL HEADER START
*
- * p30/lib-types.h
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
+ *
+ * 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.
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ *
+ * Copyright (c) 2012, 2013, Intel Corporation.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ *
+ * lnet/include/lnet/lib-types.h
*
* Types used by the library side routines that do not need to be
* exposed to the user application
*/
-#ifndef __PORTALS_LIB_TYPES_H__
-#define __PORTALS_LIB_TYPES_H__
-
-#include "build_check.h"
+#ifndef __LNET_LIB_TYPES_H__
+#define __LNET_LIB_TYPES_H__
-#if defined(__linux__)
-#include <portals/linux/lib-types.h>
-#elif defined(__APPLE__)
-#include <portals/darwin/lib-types.h>
-#else
-#error Unsupported Operating System
-#endif
+#ifdef __KERNEL__
+# include <linux/uio.h>
+# include <linux/types.h>
+#else /* !__KERNEL__ */
+# define LNET_USE_LIB_FREELIST
+# include <sys/types.h>
+#endif /* __KERNEL__ */
#include <libcfs/libcfs.h>
#include <libcfs/list.h>
-#include <portals/types.h>
-#include <portals/nal.h>
+#include <lnet/types.h>
+#include <lnet/lnetctl.h>
-typedef char *user_ptr;
-typedef struct lib_msg_t lib_msg_t;
-typedef struct lib_ptl_t lib_ptl_t;
-typedef struct lib_ac_t lib_ac_t;
-typedef struct lib_me_t lib_me_t;
-typedef struct lib_md_t lib_md_t;
-typedef struct lib_eq_t lib_eq_t;
+#define WIRE_ATTR __attribute__((packed))
-#define WIRE_ATTR __attribute__((packed))
+/* Packed version of lnet_process_id_t to transfer via network */
+typedef struct {
+ lnet_nid_t nid;
+ lnet_pid_t pid; /* node id / process id */
+} WIRE_ATTR lnet_process_id_packed_t;
/* 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
typedef struct {
__u64 wh_interface_cookie;
__u64 wh_object_cookie;
-} WIRE_ATTR ptl_handle_wire_t;
-
-/* byte-flip insensitive! */
-#define PTL_WIRE_HANDLE_NONE \
-((const ptl_handle_wire_t) {.wh_interface_cookie = -1, .wh_object_cookie = -1})
+} WIRE_ATTR lnet_handle_wire_t;
typedef enum {
- PTL_MSG_ACK = 0,
- PTL_MSG_PUT,
- PTL_MSG_GET,
- PTL_MSG_REPLY,
- PTL_MSG_HELLO,
-} ptl_msg_type_t;
+ 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 ptl_ack {
- ptl_handle_wire_t dst_wmd;
- ptl_match_bits_t match_bits;
- ptl_size_t mlength;
-} WIRE_ATTR ptl_ack_t;
-
-typedef struct ptl_put {
- ptl_handle_wire_t ack_wmd;
- ptl_match_bits_t match_bits;
- ptl_hdr_data_t hdr_data;
- ptl_pt_index_t ptl_index;
- ptl_size_t offset;
-} WIRE_ATTR ptl_put_t;
-
-typedef struct ptl_get {
- ptl_handle_wire_t return_wmd;
- ptl_match_bits_t match_bits;
- ptl_pt_index_t ptl_index;
- ptl_size_t src_offset;
- ptl_size_t sink_length;
-} WIRE_ATTR ptl_get_t;
-
-typedef struct ptl_reply {
- ptl_handle_wire_t dst_wmd;
-} WIRE_ATTR ptl_reply_t;
-
-typedef struct ptl_hello {
+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 ptl_hello_t;
+} WIRE_ATTR lnet_hello_t;
typedef struct {
- ptl_nid_t dest_nid;
- ptl_nid_t src_nid;
- ptl_pid_t dest_pid;
- ptl_pid_t src_pid;
- __u32 type; /* ptl_msg_type_t */
+ 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 {
- ptl_ack_t ack;
- ptl_put_t put;
- ptl_get_t get;
- ptl_reply_t reply;
- ptl_hello_t hello;
+ lnet_ack_t ack;
+ lnet_put_t put;
+ lnet_get_t get;
+ lnet_reply_t reply;
+ lnet_hello_t hello;
} msg;
-} WIRE_ATTR ptl_hdr_t;
+} WIRE_ATTR lnet_hdr_t;
-/* A HELLO message contains the portals magic number and protocol version
+/* 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
- * PTL_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 NALs (e.g. TCP/IP) to check the peer is
- * running the same protocol and to find out its NID, so that hosts with
- * multiple IP interfaces can have a single NID. These NALs should exchange
- * HELLO messages when a connection is first established.
- * Individual NALs can put whatever else they fancy in ptl_hdr_t::msg.
+ * 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; /* PORTALS_PROTO_MAGIC */
+ __u32 magic; /* LNET_PROTO_TCP_MAGIC */
__u16 version_major; /* increment on incompatible change */
__u16 version_minor; /* increment on compatible change */
-} WIRE_ATTR ptl_magicversion_t;
+} WIRE_ATTR lnet_magicversion_t;
-#define PORTALS_PROTO_MAGIC 0xeebc0ded
+/* PROTO MAGIC for LNDs */
+#define LNET_PROTO_IB_MAGIC 0x0be91b91
+#define LNET_PROTO_RA_MAGIC 0x0be91b92
+#define LNET_PROTO_QSW_MAGIC 0x0be91b93
+#define LNET_PROTO_GNI_MAGIC 0xb00fbabe /* ask Kim */
+#define LNET_PROTO_TCP_MAGIC 0xeebc0ded
+#define LNET_PROTO_PTL_MAGIC 0x50746C4E /* 'PtlN' unique magic */
+#define LNET_PROTO_MX_MAGIC 0x4d583130 /* 'MX10'! */
+#define LNET_PROTO_ACCEPTOR_MAGIC 0xacce7100
+#define LNET_PROTO_PING_MAGIC 0x70696E67 /* 'ping' */
-#define PORTALS_PROTO_VERSION_MAJOR 1
-#define PORTALS_PROTO_VERSION_MINOR 0
+/* 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 /* ! */
-typedef struct {
- long recv_count, recv_length, send_count, send_length, drop_count,
- drop_length, msgs_alloc, msgs_max;
-} lib_counters_t;
-
-/* temporary expedient: limit number of entries in discontiguous MDs */
-#define PTL_MTU (1<<20)
-#define PTL_MD_MAX_IOV 256
-
-struct lib_msg_t {
- struct list_head msg_list;
- lib_md_t *md;
- ptl_handle_wire_t ack_wmd;
- ptl_event_t ev;
-};
-struct lib_ptl_t {
- ptl_pt_index_t size;
- struct list_head *tbl;
-};
-
-struct lib_ac_t {
- int next_free;
-};
+#define LNET_PROTO_TCP_VERSION_MAJOR 1
+#define LNET_PROTO_TCP_VERSION_MINOR 0
+/* Acceptor connection request */
typedef struct {
- struct list_head lh_hash_chain;
- __u64 lh_cookie;
-} lib_handle_t;
+ __u32 acr_magic; /* PTL_ACCEPTOR_PROTO_MAGIC */
+ __u32 acr_version; /* protocol version */
+ __u64 acr_nid; /* target NID */
+} WIRE_ATTR lnet_acceptor_connreq_t;
+
+#define LNET_PROTO_ACCEPTOR_VERSION 1
+
+/* 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;
+ /* where is it from, it's only for building event */
+ lnet_nid_t msg_from;
+ __u32 msg_type;
+
+ /* commited for sending */
+ unsigned int msg_tx_committed:1;
+ /* CPT # this message committed for sending */
+ unsigned int msg_tx_cpt:15;
+ /* commited 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 *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;
+} lnet_msg_t;
+
+
+typedef struct lnet_libhandle {
+ 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)))
-
-struct lib_eq_t {
- struct list_head eq_list;
- lib_handle_t eq_lh;
- ptl_seq_t eq_enq_seq;
- ptl_seq_t eq_deq_seq;
- ptl_size_t eq_size;
- ptl_event_t *eq_events;
- int eq_refcount;
- ptl_eq_handler_t eq_callback;
- void *eq_addrkey;
-};
+ ((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_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;
+ 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;
+ unsigned int md_niov; /* # frags */
+ union {
+ struct iovec 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)
+#define LNET_MD_FLAG_ABORTED (1 << 2)
+
+#ifdef LNET_USE_LIB_FREELIST
+typedef struct
+{
+ /* single contiguous array of objects */
+ void *fl_objs;
+ /* the number of them */
+ int fl_nobjs;
+ /* the size (including overhead) of each of them */
+ int fl_objsize;
+ /* where they are enqueued */
+ struct list_head fl_list;
+} lnet_freelist_t;
-struct lib_me_t {
- struct list_head me_list;
- lib_handle_t me_lh;
- ptl_process_id_t match_id;
- ptl_match_bits_t match_bits, ignore_bits;
- ptl_unlink_t unlink;
- lib_md_t *md;
-};
+typedef struct
+{
+ struct list_head fo_list; /* enqueue on fl_list */
+ void *fo_contents; /* aligned contents */
+} lnet_freeobj_t;
+#endif
-struct lib_md_t {
- struct list_head md_list;
- lib_handle_t md_lh;
- lib_me_t *me;
- user_ptr start;
- ptl_size_t offset;
- ptl_size_t length;
- ptl_size_t max_size;
- int threshold;
- int pending;
- unsigned int options;
- unsigned int md_flags;
- void *user_ptr;
- lib_eq_t *eq;
- void *md_addrkey;
- unsigned int md_niov; /* # frags */
- union {
- struct iovec iov[PTL_MD_MAX_IOV];
- ptl_kiov_t kiov[PTL_MD_MAX_IOV];
- } md_iov;
-};
+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 */
+} lnet_test_peer_t;
-#define PTL_MD_FLAG_ZOMBIE (1 << 0)
-#define PTL_MD_FLAG_AUTO_UNLINK (1 << 1)
+#define LNET_COOKIE_TYPE_MD 1
+#define LNET_COOKIE_TYPE_ME 2
+#define LNET_COOKIE_TYPE_EQ 3
+#define LNET_COOKIE_TYPE_BITS 2
+#define LNET_COOKIE_MASK ((1ULL << LNET_COOKIE_TYPE_BITS) - 1ULL)
-static inline int lib_md_exhausted (lib_md_t *md)
-{
- return (md->threshold == 0 ||
- ((md->options & PTL_MD_MAX_SIZE) != 0 &&
- md->offset + md->max_size > md->length));
-}
+struct lnet_ni; /* forward ref */
-#ifdef PTL_USE_LIB_FREELIST
-typedef struct
+typedef struct lnet_lnd
{
- 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 */
-} lib_freelist_t;
+ /* 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
+ * 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. */
+ 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);
+
+ /* query of peer aliveness */
+ void (*lnd_query)(struct lnet_ni *ni, lnet_nid_t peer, cfs_time_t *when);
+
+#if defined(__KERNEL__) || defined(HAVE_LIBPTHREAD)
+ /* accept a new connection */
+ int (*lnd_accept)(struct lnet_ni *ni, cfs_socket_t *sock);
+#endif
-typedef struct
-{
- struct list_head fo_list; /* enqueue on fl_list */
- void *fo_contents; /* aligned contents */
-} lib_freeobj_t;
+#ifndef __KERNEL__
+ /* 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);
#endif
+} lnd_t;
+#define LNET_NI_STATUS_UP 0x15aac0de
+#define LNET_NI_STATUS_DOWN 0xdeadface
+#define LNET_NI_STATUS_INVALID 0x00000000
typedef struct {
- /* info about peers we are trying to fail */
- struct list_head tp_list; /* stash in ni.ni_test_peers */
- ptl_nid_t tp_nid; /* matching nid */
- unsigned int tp_threshold; /* # failures to simulate */
-} lib_test_peer_t;
-
-#define PTL_COOKIE_TYPE_MD 1
-#define PTL_COOKIE_TYPE_ME 2
-#define PTL_COOKIE_TYPE_EQ 3
-#define PTL_COOKIE_TYPES 4
-/* PTL_COOKIE_TYPES must be a power of 2, so the cookie type can be
- * extracted by masking with (PTL_COOKIE_TYPES - 1) */
-
-typedef struct lib_ni
-{
- nal_t *ni_api;
- ptl_process_id_t ni_pid;
- lib_ptl_t ni_portals;
- lib_counters_t ni_counters;
- ptl_ni_limits_t ni_actual_limits;
-
- int ni_lh_hash_size; /* size of lib handle hash table */
- struct list_head *ni_lh_hash_table; /* all extant lib handles, this interface */
- __u64 ni_next_object_cookie; /* cookie generator */
- __u64 ni_interface_cookie; /* uniquely identifies this ni in this epoch */
-
- struct list_head ni_test_peers;
- int ni_loopback; /* loopback shortcircuits NAL */
-
-#ifdef PTL_USE_LIB_FREELIST
- lib_freelist_t ni_free_mes;
- lib_freelist_t ni_free_msgs;
- lib_freelist_t ni_free_mds;
- lib_freelist_t ni_free_eqs;
+ 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 */
+};
+
+#define LNET_MAX_INTERFACES 16
+
+typedef struct lnet_ni {
+#ifdef __KERNEL__
+ spinlock_t ni_lock;
+#else
+# ifndef HAVE_LIBPTHREAD
+ int ni_lock;
+# else
+ pthread_mutex_t ni_lock;
+# endif
#endif
+ struct list_head ni_list; /* chain on ln_nis */
+ struct list_head ni_cptlist; /* chain on ln_nis_cpt */
+ int ni_maxtxcredits; /* # tx credits */
+ /* # 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_RTE_DISABLED (1 << 2) /* Routing enabled */
+
+#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 {
+ /* chain on peer hash */
+ struct list_head lp_hashlist;
+ /* messages blocking for tx credits */
+ struct list_head lp_txq;
+ /* messages blocking for router credits */
+ struct list_head lp_rtrq;
+ /* chain on router list */
+ struct list_head lp_rtr_list;
+ /* # tx credits available */
+ int lp_txcredits;
+ /* low water mark */
+ int lp_mintxcredits;
+ /* # router credits */
+ int lp_rtrcredits;
+ /* low water mark */
+ int lp_minrtrcredits;
+ /* alive/dead? */
+ unsigned int lp_alive:1;
+ /* notification outstanding? */
+ unsigned int lp_notify:1;
+ /* outstanding notification for LND? */
+ unsigned int lp_notifylnd:1;
+ /* some thread is handling notification */
+ unsigned int lp_notifying:1;
+ /* SEND event outstanding from ping */
+ unsigned int lp_ping_notsent;
+ /* # times router went dead<->alive */
+ int lp_alive_count;
+ /* bytes queued for sending */
+ long lp_txqnob;
+ /* time of last aliveness news */
+ cfs_time_t lp_timestamp;
+ /* time of last ping attempt */
+ cfs_time_t lp_ping_timestamp;
+ /* != 0 if ping reply expected */
+ cfs_time_t lp_ping_deadline;
+ /* when I was last alive */
+ cfs_time_t lp_last_alive;
+ /* when lp_ni was queried last time */
+ cfs_time_t lp_last_query;
+ /* interface peer is on */
+ lnet_ni_t *lp_ni;
+ 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 */
+ 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)->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 */
+ 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)
- struct list_head ni_active_msgs;
- struct list_head ni_active_mds;
- struct list_head ni_active_eqs;
+typedef struct {
+ /* 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 {
+ /* 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;
+ /* # buffers */
+ 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 */
+} lnet_rtrbuf_t;
+
+typedef struct lnet_counters {
+ __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_TINY_BUF_IDX 0
+#define LNET_SMALL_BUF_IDX 1
+#define LNET_LARGE_BUF_IDX 2
+
+/* # different router buffer pools */
+#define LNET_NRBPOOLS (LNET_LARGE_BUF_IDX + 1)
+
+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 {
#ifdef __KERNEL__
- spinlock_t ni_lock;
- cfs_waitq_t ni_waitq;
+ spinlock_t ptl_lock;
#else
- pthread_mutex_t ni_mutex;
- pthread_cond_t ni_cond;
+# ifndef HAVE_LIBPTHREAD
+ int ptl_lock;
+# else
+ pthread_mutex_t ptl_lock;
+# endif
#endif
-} lib_ni_t;
+ 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" */
+ 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;
+
+#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
+};
-typedef struct lib_nal
-{
- /* lib-level interface state */
- lib_ni_t libnal_ni;
-
- /* NAL-private data */
- void *libnal_data;
-
- /*
- * send: Sends a preformatted header and payload data to a
- * specified remote process. The payload is scattered over 'niov'
- * fragments described by iov, starting at 'offset' for 'mlen'
- * bytes.
- * NB the NAL may NOT overwrite iov.
- * PTL_OK on success => NAL has committed to send and will call
- * lib_finalize on completion
- */
- ptl_err_t (*libnal_send)
- (struct lib_nal *nal, void *private, lib_msg_t *cookie,
- ptl_hdr_t *hdr, int type, ptl_nid_t nid, ptl_pid_t pid,
- unsigned int niov, struct iovec *iov,
- size_t offset, size_t mlen);
-
- /* as send, but with a set of page fragments (NULL if not supported) */
- ptl_err_t (*libnal_send_pages)
- (struct lib_nal *nal, void *private, lib_msg_t * cookie,
- ptl_hdr_t * hdr, int type, ptl_nid_t nid, ptl_pid_t pid,
- unsigned int niov, ptl_kiov_t *iov,
- size_t offset, size_t mlen);
- /*
- * recv: Receives an incoming message from a remote process. The
- * payload is to be received into the scattered buffer of 'niov'
- * fragments described by iov, starting at 'offset' for 'mlen'
- * bytes. Payload bytes after 'mlen' up to 'rlen' are to be
- * discarded.
- * NB the NAL may NOT overwrite iov.
- * PTL_OK on success => NAL has committed to receive and will call
- * lib_finalize on completion
- */
- ptl_err_t (*libnal_recv)
- (struct lib_nal *nal, void *private, lib_msg_t * cookie,
- unsigned int niov, struct iovec *iov,
- size_t offset, size_t mlen, size_t rlen);
-
- /* as recv, but with a set of page fragments (NULL if not supported) */
- ptl_err_t (*libnal_recv_pages)
- (struct lib_nal *nal, void *private, lib_msg_t * cookie,
- unsigned int niov, ptl_kiov_t *iov,
- size_t offset, size_t mlen, size_t rlen);
-
- /*
- * (un)map: Tell the NAL about some memory it will access.
- * *addrkey passed to libnal_unmap() is what libnal_map() set it to.
- * type of *iov depends on options.
- * Set to NULL if not required.
- */
- ptl_err_t (*libnal_map)
- (struct lib_nal *nal, unsigned int niov, struct iovec *iov,
- void **addrkey);
- void (*libnal_unmap)
- (struct lib_nal *nal, unsigned int niov, struct iovec *iov,
- void **addrkey);
-
- /* as (un)map, but with a set of page fragments */
- ptl_err_t (*libnal_map_pages)
- (struct lib_nal *nal, unsigned int niov, ptl_kiov_t *iov,
- void **addrkey);
- void (*libnal_unmap_pages)
- (struct lib_nal *nal, unsigned int niov, ptl_kiov_t *iov,
- void **addrkey);
-
- void (*libnal_printf)(struct lib_nal *nal, const char *fmt, ...);
-
- /* Calculate a network "distance" to given node */
- int (*libnal_dist) (struct lib_nal *nal, ptl_nid_t nid, unsigned long *dist);
-} lib_nal_t;
-
-typedef struct /* loopback descriptor */
+/* 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
{
- unsigned int lod_type;
- unsigned int lod_niov;
- size_t lod_offset;
- size_t lod_nob;
- union {
- struct iovec *iov;
- ptl_kiov_t *kiov;
- } lod_iov;
-} lo_desc_t;
+ /* 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;
+#ifdef __KERNEL__
+ wait_queue_head_t ln_eq_waitq;
+ spinlock_t ln_eq_wait_lock;
+#else
+# ifndef HAVE_LIBPTHREAD
+ int ln_eq_wait_lock;
+# else
+ pthread_cond_t ln_eq_cond;
+ pthread_mutex_t ln_eq_wait_lock;
+# endif
+#endif
+ 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_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;
+ 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;
+#ifdef __KERNEL__
+ /* serialise startup/shutdown */
+ struct semaphore ln_rc_signal;
-#define LOD_IOV 0xeb105
-#define LOD_KIOV 0xeb106
+ struct mutex ln_api_mutex;
+ struct mutex ln_lnd_mutex;
+ struct mutex ln_delay_mutex;
+#else
+# ifndef HAVE_LIBPTHREAD
+ int ln_api_mutex;
+ int ln_lnd_mutex;
+# else
+ pthread_mutex_t ln_api_mutex;
+ pthread_mutex_t ln_lnd_mutex;
+# endif
+#endif
+ 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;
+
+ /* 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;
+
+#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
+} lnet_t;
#endif
git://git.whamcloud.com / fs / lustre-release.git / blobdiff