diff options
Diffstat (limited to 'drivers/staging/lustre/include/linux/lnet/lib-types.h')
| -rw-r--r-- | drivers/staging/lustre/include/linux/lnet/lib-types.h | 667 |
1 files changed, 259 insertions, 408 deletions
diff --git a/drivers/staging/lustre/include/linux/lnet/lib-types.h b/drivers/staging/lustre/include/linux/lnet/lib-types.h index 50537668f59d..81a63dbdea25 100644 --- a/drivers/staging/lustre/include/linux/lnet/lib-types.h +++ b/drivers/staging/lustre/include/linux/lnet/lib-types.h @@ -15,11 +15,7 @@ * * 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. + * http://www.gnu.org/licenses/gpl-2.0.html * * GPL HEADER END */ @@ -27,155 +23,41 @@ * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. * Use is subject to license terms. * - * Copyright (c) 2012, Intel Corporation. + * Copyright (c) 2012 - 2015, Intel Corporation. */ /* * This file is part of Lustre, http://www.lustre.org/ - * Lustre is a trademark of Sun Microsystems, Inc. + * Lustre is a trademark of Seagate, 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 __LNET_LIB_TYPES_H__ #define __LNET_LIB_TYPES_H__ -#include "linux/lib-types.h" +#include <linux/kthread.h> +#include <linux/uio.h> +#include <linux/types.h> +#include <net/sock.h> -#include "../libcfs/libcfs.h" -#include <linux/list.h> #include "types.h" -#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 - * 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; - -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; - -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_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' */ - -/* 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; - -#define LNET_PROTO_ACCEPTOR_VERSION 1 +/* Max payload size */ +#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 */ + struct list_head msg_activelist; + struct list_head msg_list; /* Q for credits/MD */ - lnet_process_id_t msg_target; + lnet_process_id_t msg_target; /* where is it from, it's only for building event */ lnet_nid_t msg_from; __u32 msg_type; @@ -195,127 +77,114 @@ typedef struct lnet_msg { /* 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 global 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 kvec *msg_iov; - lnet_kiov_t *msg_kiov; - - lnet_event_t msg_ev; - lnet_hdr_t msg_hdr; + 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 global + 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 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)-(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; + 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; + 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 */ + 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 kvec iov[LNET_MAX_IOV]; - lnet_kiov_t kiov[LNET_MAX_IOV]; + 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) -#define LNET_MD_FLAG_ABORTED (1 << 2) - -#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 */ + 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_TYPE_BITS 2 +#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) -struct lnet_ni; /* forward ref */ +struct lnet_ni; /* forward ref */ typedef struct lnet_lnd { /* fields managed by portals */ - struct list_head lnd_list; /* stash in the LND table */ - int lnd_refcount; /* # active instances */ + struct list_head lnd_list; /* stash in the LND table */ + int lnd_refcount; /* # active instances */ /* fields initialised by the LND */ - unsigned int lnd_type; + __u32 lnd_type; int (*lnd_startup)(struct lnet_ni *ni); void (*lnd_shutdown)(struct lnet_ni *ni); @@ -347,7 +216,8 @@ typedef struct lnet_lnd { int (*lnd_recv)(struct lnet_ni *ni, void *private, lnet_msg_t *msg, int delayed, unsigned int niov, struct kvec *iov, lnet_kiov_t *kiov, - unsigned int offset, unsigned int mlen, unsigned int rlen); + 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 @@ -355,60 +225,49 @@ typedef struct lnet_lnd { * 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); + 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, unsigned long *when); + void (*lnd_query)(struct lnet_ni *ni, lnet_nid_t peer, + unsigned long *when); /* accept a new connection */ int (*lnd_accept)(struct lnet_ni *ni, struct socket *sock); - } lnd_t; -#define LNET_NI_STATUS_UP 0x15aac0de -#define LNET_NI_STATUS_DOWN 0xdeadface -#define LNET_NI_STATUS_INVALID 0x00000000 -typedef struct { - 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 */ + struct list_head tq_delayed; /* delayed TXs */ }; -#define LNET_MAX_INTERFACES 16 - typedef struct lnet_ni { - spinlock_t ni_lock; - struct list_head ni_list; /* chain on ln_nis */ - struct list_head ni_cptlist; /* chain on ln_nis_cpt */ - int ni_maxtxcredits; /* # tx credits */ + spinlock_t ni_lock; + 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; + int ni_peertxcredits; /* # per-peer router buffer credits */ - int ni_peerrtrcredits; + 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 */ + 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 */ + 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]; + char *ni_interfaces[LNET_MAX_INTERFACES]; } lnet_ni_t; #define LNET_PROTO_PING_MATCHBITS 0x8000000000000000LL @@ -422,68 +281,70 @@ typedef struct lnet_ni { #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 list_head rcd_list; + lnet_handle_md_t rcd_mdh; /* ping buffer MD */ struct lnet_peer *rcd_gateway; /* reference to gateway */ lnet_ping_info_t *rcd_pinginfo; /* ping buffer */ } lnet_rc_data_t; typedef struct lnet_peer { - struct list_head lp_hashlist; /* chain on peer hash */ - struct list_head lp_txq; /* messages blocking for tx credits */ - struct list_head lp_rtrq; /* messages blocking for router credits */ - struct list_head lp_rtr_list; /* chain on router list */ - int lp_txcredits; /* # tx credits available */ - int lp_mintxcredits; /* low water mark */ - int lp_rtrcredits; /* # router credits */ - int lp_minrtrcredits; /* low water mark */ - unsigned int lp_alive:1; /* alive/dead? */ - unsigned int lp_notify:1; /* notification outstanding? */ - unsigned int lp_notifylnd:1; /* outstanding notification for LND? */ - unsigned int lp_notifying:1; /* some thread is handling notification */ - unsigned int lp_ping_notsent; /* SEND event outstanding from ping */ - int lp_alive_count; /* # times router went dead<->alive */ - long lp_txqnob; /* bytes queued for sending */ - unsigned long lp_timestamp; /* time of last aliveness news */ - unsigned long lp_ping_timestamp; /* time of last ping attempt */ - unsigned long lp_ping_deadline; /* != 0 if ping reply expected */ - unsigned long lp_last_alive; /* when I was last alive */ - unsigned long lp_last_query; /* when lp_ni was queried last time */ - lnet_ni_t *lp_ni; /* interface peer is on */ - lnet_nid_t lp_nid; /* peer's NID */ - int lp_refcount; /* # refs */ - int lp_cpt; /* CPT this peer attached on */ + 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 */ + unsigned long lp_timestamp; /* time of last aliveness + news */ + unsigned long lp_ping_timestamp;/* time of last ping + attempt */ + unsigned long lp_ping_deadline; /* != 0 if ping reply + expected */ + unsigned long lp_last_alive; /* when I was last alive */ + unsigned long lp_last_query; /* when lp_ni was queried + last time */ + lnet_ni_t *lp_ni; /* interface peer is on */ + lnet_nid_t lp_nid; /* peer's NID */ + int lp_refcount; /* # refs */ + int lp_cpt; /* CPT this peer attached on */ /* # refs from lnet_route_t::lr_gateway */ - int lp_rtr_refcount; + int lp_rtr_refcount; /* returned RC ping features */ - unsigned int lp_ping_feats; - struct list_head lp_routes; /* routers on this peer */ + 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) +#define LNET_PEER_HASH_BITS 9 +#define LNET_PEER_HASH_SIZE (1 << LNET_PEER_HASH_BITS) /* peer hash table */ struct lnet_peer_table { - int pt_version; /* /proc validity stamp */ - int pt_number; /* # peers extant */ - struct list_head pt_deathrow; /* zombie peers */ - struct list_head *pt_hash; /* NID->peer hash */ + int pt_version; /* /proc validity stamp */ + int pt_number; /* # peers extant */ + struct list_head pt_deathrow; /* zombie peers */ + struct list_head *pt_hash; /* NID->peer hash */ }; /* peer aliveness is enabled only on routers for peers in a network where the @@ -492,14 +353,14 @@ struct lnet_peer_table { (lp)->lp_ni->ni_peertimeout > 0) typedef struct { - struct list_head lr_list; /* chain on net */ - struct list_head lr_gwlist; /* chain on gateway */ + 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 */ + __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) @@ -507,43 +368,37 @@ typedef struct { #define LNET_REMOTE_NETS_HASH_SIZE (1 << the_lnet.ln_remote_nets_hbits) typedef struct { - struct list_head lrn_list; /* chain on ln_remote_nets_hash */ - struct list_head lrn_routes; /* routes to me */ - __u32 lrn_net; /* my net number */ + struct list_head lrn_list; /* chain on + ln_remote_nets_hash */ + struct list_head lrn_routes; /* routes to me */ + __u32 lrn_net; /* my net number */ } lnet_remotenet_t; +/** 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 */ + struct list_head rbp_bufs; /* my free buffer pool */ + struct list_head rbp_msgs; /* messages blocking + for a buffer */ + int rbp_npages; /* # pages in each buffer */ + int rbp_nbuffers; /* # buffers */ + int rbp_credits; /* # free buffers / + blocked messages */ + int rbp_mincredits; /* low water mark */ } lnet_rtrbufpool_t; typedef struct { - struct list_head rb_list; /* chain on rbp_bufs */ - lnet_rtrbufpool_t *rb_pool; /* owning pool */ - lnet_kiov_t rb_kiov[0]; /* the buffer space */ + struct list_head rb_list; /* chain on rbp_bufs */ + lnet_rtrbufpool_t *rb_pool; /* owning pool */ + lnet_kiov_t rb_kiov[0]; /* the buffer space */ } lnet_rtrbuf_t; -typedef struct { - __u32 msgs_alloc; - __u32 msgs_max; - __u32 errors; - __u32 send_count; - __u32 recv_count; - __u32 route_count; - __u32 drop_count; - __u64 send_length; - __u64 recv_length; - __u64 route_length; - __u64 drop_length; -} WIRE_ATTR lnet_counters_t; - -#define LNET_PEER_HASHSIZE 503 /* prime! */ - -#define LNET_NRBPOOLS 3 /* # different router buffer pools */ +#define LNET_PEER_HASHSIZE 503 /* prime! */ + +#define LNET_NRBPOOLS 3 /* # different router buffer pools */ enum { /* Didn't match anything */ @@ -553,15 +408,16 @@ enum { /* Must be discarded */ LNET_MATCHMD_DROP = (1 << 2), /* match and buffer is exhausted */ - LNET_MATCHMD_EXHAUSTED = (1 << 3), + LNET_MATCHMD_EXHAUSTED = (1 << 3), /* match or drop */ - LNET_MATCHMD_FINISH = (LNET_MATCHMD_OK | LNET_MATCHMD_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 */ +#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 { @@ -590,14 +446,14 @@ struct lnet_match_info { /* portal match table */ struct lnet_match_table { /* reserved for upcoming patches, CPU partition ID */ - unsigned int mt_cpt; - unsigned int mt_portal; /* portal index */ + 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; + 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 */ + __u64 mt_exhausted[LNET_MT_EXHAUSTED_BMAP]; + struct list_head *mt_mhash; /* matching hash */ }; /* these are only useful for wildcard portal */ @@ -611,22 +467,22 @@ struct lnet_match_table { #define LNET_PTL_ROTOR_HASH_RT 3 typedef struct lnet_portal { - spinlock_t ptl_lock; - unsigned int ptl_index; /* portal ID, reserved */ + spinlock_t ptl_lock; + unsigned int ptl_index; /* portal ID, reserved */ /* flags on this portal: lazy, unique... */ - unsigned int ptl_options; + unsigned int ptl_options; /* list of messages which are stealing buffer */ - struct list_head ptl_msg_stealing; + struct list_head ptl_msg_stealing; /* messages blocking for MD */ - struct list_head ptl_msg_delayed; + 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; + unsigned int ptl_rotor; /* # active entries for this portal */ - int ptl_mt_nmaps; + int ptl_mt_nmaps; /* array of active entries' cpu-partition-id */ - int ptl_mt_maps[0]; + int ptl_mt_maps[0]; } lnet_portal_t; #define LNET_LH_HASH_BITS 12 @@ -635,28 +491,22 @@ typedef struct lnet_portal { /* 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 + 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 */ + int msc_init; /* initialized or not */ /* max # threads finalizing */ - int msc_nfinalizers; + int msc_nfinalizers; /* msgs waiting to complete finalizing */ - struct list_head msc_finalizing; - struct list_head msc_active; /* active message list */ + struct list_head msc_finalizing; + struct list_head msc_active; /* active message list */ /* threads doing finalization */ void **msc_finalizers; -#ifdef LNET_USE_LIB_FREELIST - lnet_freelist_t msc_freelist; /* freelist for messages */ -#endif }; /* Router Checker states */ @@ -666,15 +516,15 @@ struct lnet_msg_container { typedef struct { /* CPU partition table of LNet */ - struct cfs_cpt_table *ln_cpt_table; + struct cfs_cpt_table *ln_cpt_table; /* number of CPTs in ln_cpt_table */ - unsigned int ln_cpt_number; - unsigned int ln_cpt_bits; + unsigned int ln_cpt_number; + unsigned int ln_cpt_bits; /* protect LNet resources (ME/MD/EQ) */ - struct cfs_percpt_lock *ln_res_lock; + struct cfs_percpt_lock *ln_res_lock; /* # portals */ - int ln_nportals; + int ln_nportals; /* the vector of portals */ lnet_portal_t **ln_portals; /* percpt ME containers */ @@ -683,77 +533,78 @@ typedef struct { 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; + 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; + 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_test_peers; - struct list_head ln_nis; /* LND instances */ + struct list_head ln_nis; /* LND instances */ /* NIs bond on specific CPT(s) */ - struct list_head ln_nis_cpt; + struct list_head ln_nis_cpt; /* dying LND instances */ - struct list_head ln_nis_zombie; - lnet_ni_t *ln_loni; /* the loopback NI */ + 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; + lnet_ni_t *ln_eq_waitni; /* remote networks with routes to them */ - struct list_head *ln_remote_nets_hash; + struct list_head *ln_remote_nets_hash; /* validity stamp */ - __u64 ln_remote_nets_version; + __u64 ln_remote_nets_version; /* list of all known routers */ - struct list_head ln_routers; + struct list_head ln_routers; /* validity stamp */ - __u64 ln_routers_version; + __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; + 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; + int ln_rc_state; /* router checker's event queue */ - lnet_handle_eq_t ln_rc_eqh; + lnet_handle_eq_t ln_rc_eqh; /* rcd still pending on net */ - struct list_head ln_rcd_deathrow; + struct list_head ln_rcd_deathrow; /* rcd ready for free */ - struct list_head ln_rcd_zombie; + struct list_head ln_rcd_zombie; /* serialise startup/shutdown */ - struct semaphore ln_rc_signal; + struct semaphore ln_rc_signal; - struct mutex ln_api_mutex; - struct mutex ln_lnd_mutex; - int ln_init; /* LNetInit() called? */ + struct mutex ln_api_mutex; + struct mutex ln_lnd_mutex; + int ln_init; /* lnet_init() + called? */ /* Have I called LNetNIInit myself? */ - int ln_niinit_self; + int ln_niinit_self; /* LNetNIInit/LNetNIFini counter */ - int ln_refcount; + int ln_refcount; /* shutdown in progress */ - int ln_shutdown; + int ln_shutdown; - int ln_routing; /* am I a router? */ - lnet_pid_t ln_pid; /* requested pid */ + 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; + __u64 ln_interface_cookie; /* registered LNDs */ - struct list_head ln_lnds; + struct list_head ln_lnds; /* space for network names */ - char *ln_network_tokens; - int ln_network_tokens_nob; + char *ln_network_tokens; + int ln_network_tokens_nob; /* test protocol compatibility flags */ - int ln_testprotocompat; + int ln_testprotocompat; } lnet_t; |