2 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
4 * Copyright (c) 2011, 2012, Intel Corporation.
6 * Author: Zach Brown <zab@zabbo.net>
7 * Author: Peter J. Braam <braam@clusterfs.com>
8 * Author: Phil Schwan <phil@clusterfs.com>
9 * Author: Eric Barton <eric@bartonsoftware.com>
11 * This file is part of Lustre, http://www.lustre.org
13 * Portals is free software; you can redistribute it and/or
14 * modify it under the terms of version 2 of the GNU General Public
15 * License as published by the Free Software Foundation.
17 * Portals is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
24 #ifndef _SOCKLND_SOCKLND_H_
25 #define _SOCKLND_SOCKLND_H_
27 #define DEBUG_PORTAL_ALLOC
28 #define DEBUG_SUBSYSTEM S_LND
30 #include <linux/crc32.h>
31 #include <linux/errno.h>
33 #include <linux/init.h>
34 #include <linux/kernel.h>
35 #include <linux/kmod.h>
36 #include <linux/list.h>
38 #include <linux/module.h>
39 #include <linux/stat.h>
40 #include <linux/string.h>
41 #include <linux/syscalls.h>
42 #include <linux/sysctl.h>
43 #include <linux/uio.h>
44 #include <linux/unistd.h>
49 #include <linux/libcfs/libcfs.h>
50 #include <linux/lnet/lib-lnet.h>
51 #include <linux/lnet/socklnd.h>
53 /* assume one thread for each connection type */
54 #define SOCKNAL_NSCHEDS 3
55 #define SOCKNAL_NSCHEDS_HIGH (SOCKNAL_NSCHEDS << 1)
57 #define SOCKNAL_PEER_HASH_SIZE 101 /* # peer lists */
58 #define SOCKNAL_RESCHED 100 /* # scheduler loops before reschedule */
59 #define SOCKNAL_INSANITY_RECONN 5000 /* connd is trying on reconn infinitely */
60 #define SOCKNAL_ENOMEM_RETRY CFS_TICK /* jiffies between retries */
62 #define SOCKNAL_SINGLE_FRAG_TX 0 /* disable multi-fragment sends */
63 #define SOCKNAL_SINGLE_FRAG_RX 0 /* disable multi-fragment receives */
65 #define SOCKNAL_VERSION_DEBUG 0 /* enable protocol version debugging */
68 * risk kmap deadlock on multi-frag I/O (backs off to single-frag if disabled).
69 * no risk if we're not running on a CONFIG_HIGHMEM platform.
72 # define SOCKNAL_RISK_KMAP_DEADLOCK 0
74 # define SOCKNAL_RISK_KMAP_DEADLOCK 1
77 struct ksock_sched_info;
79 struct ksock_sched { /* per scheduler state */
80 spinlock_t kss_lock; /* serialise */
81 struct list_head kss_rx_conns; /* conn waiting to be read */
82 struct list_head kss_tx_conns; /* conn waiting to be written */
83 struct list_head kss_zombie_noop_txs; /* zombie noop tx list */
84 wait_queue_head_t kss_waitq; /* where scheduler sleeps */
85 int kss_nconns; /* # connections assigned to
88 struct ksock_sched_info *kss_info; /* owner of it */
91 struct ksock_sched_info {
92 int ksi_nthreads_max; /* max allowed threads */
93 int ksi_nthreads; /* number of threads */
94 int ksi_cpt; /* CPT id */
95 struct ksock_sched *ksi_scheds; /* array of schedulers */
98 #define KSOCK_CPT_SHIFT 16
99 #define KSOCK_THREAD_ID(cpt, sid) (((cpt) << KSOCK_CPT_SHIFT) | (sid))
100 #define KSOCK_THREAD_CPT(id) ((id) >> KSOCK_CPT_SHIFT)
101 #define KSOCK_THREAD_SID(id) ((id) & ((1UL << KSOCK_CPT_SHIFT) - 1))
103 struct ksock_interface { /* in-use interface */
104 __u32 ksni_ipaddr; /* interface's IP address */
105 __u32 ksni_netmask; /* interface's network mask */
106 int ksni_nroutes; /* # routes using (active) */
107 int ksni_npeers; /* # peers using (passive) */
108 char ksni_name[IFNAMSIZ]; /* interface name */
111 struct ksock_tunables {
112 int *ksnd_timeout; /* "stuck" socket timeout
115 int *ksnd_nscheds; /* # scheduler threads in each
116 * pool while starting
118 int *ksnd_nconnds; /* # connection daemons */
119 int *ksnd_nconnds_max; /* max # connection daemons */
120 int *ksnd_min_reconnectms; /* first connection retry after
123 int *ksnd_max_reconnectms; /* ...exponentially increasing to
126 int *ksnd_eager_ack; /* make TCP ack eagerly? */
127 int *ksnd_typed_conns; /* drive sockets by type? */
128 int *ksnd_min_bulk; /* smallest "large" message */
129 int *ksnd_tx_buffer_size; /* socket tx buffer size */
130 int *ksnd_rx_buffer_size; /* socket rx buffer size */
131 int *ksnd_nagle; /* enable NAGLE? */
132 int *ksnd_round_robin; /* round robin for multiple
135 int *ksnd_keepalive; /* # secs for sending keepalive
138 int *ksnd_keepalive_idle; /* # idle secs before 1st probe
140 int *ksnd_keepalive_count; /* # probes */
141 int *ksnd_keepalive_intvl; /* time between probes */
142 int *ksnd_credits; /* # concurrent sends */
143 int *ksnd_peertxcredits; /* # concurrent sends to 1 peer
145 int *ksnd_peerrtrcredits; /* # per-peer router buffer
148 int *ksnd_peertimeout; /* seconds to consider peer dead
150 int *ksnd_enable_csum; /* enable check sum */
151 int *ksnd_inject_csum_error; /* set non-zero to inject
154 int *ksnd_nonblk_zcack; /* always send zc-ack on
155 * non-blocking connection
157 unsigned int *ksnd_zc_min_payload; /* minimum zero copy payload
160 int *ksnd_zc_recv; /* enable ZC receive (for
163 int *ksnd_zc_recv_min_nfrags; /* minimum # of fragments to
169 __u64 ksnn_incarnation; /* my epoch */
170 spinlock_t ksnn_lock; /* serialise */
171 struct list_head ksnn_list; /* chain on global list */
172 int ksnn_npeers; /* # peers */
173 int ksnn_shutdown; /* shutting down? */
174 int ksnn_ninterfaces; /* IP interfaces */
175 struct ksock_interface ksnn_interfaces[LNET_MAX_INTERFACES];
179 #define SOCKNAL_CONND_TIMEOUT 120
180 /** reserved thread for accepting & creating new connd */
181 #define SOCKNAL_CONND_RESV 1
183 struct ksock_nal_data {
184 int ksnd_init; /* initialisation state
186 int ksnd_nnets; /* # networks set up */
187 struct list_head ksnd_nets; /* list of nets */
188 rwlock_t ksnd_global_lock; /* stabilize peer/conn
191 struct list_head *ksnd_peers; /* hash table of all my
194 int ksnd_peer_hash_size; /* size of ksnd_peers */
196 int ksnd_nthreads; /* # live threads */
197 int ksnd_shuttingdown; /* tell threads to exit
199 struct ksock_sched_info **ksnd_sched_info; /* schedulers info */
201 atomic_t ksnd_nactive_txs; /* #active txs */
203 struct list_head ksnd_deathrow_conns; /* conns to close:
206 struct list_head ksnd_zombie_conns; /* conns to free:
209 struct list_head ksnd_enomem_conns; /* conns to retry:
212 wait_queue_head_t ksnd_reaper_waitq; /* reaper sleeps here */
213 unsigned long ksnd_reaper_waketime; /* when reaper will wake
215 spinlock_t ksnd_reaper_lock; /* serialise */
217 int ksnd_enomem_tx; /* test ENOMEM sender */
218 int ksnd_stall_tx; /* test sluggish sender
220 int ksnd_stall_rx; /* test sluggish
223 struct list_head ksnd_connd_connreqs; /* incoming connection
226 struct list_head ksnd_connd_routes; /* routes waiting to be
229 wait_queue_head_t ksnd_connd_waitq; /* connds sleep here */
230 int ksnd_connd_connecting; /* # connds connecting
232 time64_t ksnd_connd_failed_stamp;/* time stamp of the
236 time64_t ksnd_connd_starting_stamp;/* time stamp of the
237 * last starting connd
239 unsigned int ksnd_connd_starting; /* # starting connd */
240 unsigned int ksnd_connd_running; /* # running connd */
241 spinlock_t ksnd_connd_lock; /* serialise */
243 struct list_head ksnd_idle_noop_txs; /* list head for freed
246 spinlock_t ksnd_tx_lock; /* serialise, g_lock
251 #define SOCKNAL_INIT_NOTHING 0
252 #define SOCKNAL_INIT_DATA 1
253 #define SOCKNAL_INIT_ALL 2
256 * A packet just assembled for transmission is represented by 1 or more
257 * struct iovec fragments (the first frag contains the portals header),
258 * followed by 0 or more struct bio_vec fragments.
260 * On the receive side, initially 1 struct iovec fragment is posted for
261 * receive (the header). Once the header has been received, the payload is
262 * received into either struct iovec or struct bio_vec fragments, depending on
263 * what the header matched or whether the message needs forwarding.
265 struct ksock_conn; /* forward ref */
266 struct ksock_peer; /* forward ref */
267 struct ksock_route; /* forward ref */
268 struct ksock_proto; /* forward ref */
270 struct ksock_tx { /* transmit packet */
271 struct list_head tx_list; /* queue on conn for transmission etc
273 struct list_head tx_zc_list; /* queue on peer for ZC request */
274 atomic_t tx_refcount; /* tx reference count */
275 int tx_nob; /* # packet bytes */
276 int tx_resid; /* residual bytes */
277 int tx_niov; /* # packet iovec frags */
278 struct kvec *tx_iov; /* packet iovec frags */
279 int tx_nkiov; /* # packet page frags */
280 unsigned short tx_zc_aborted; /* aborted ZC request */
281 unsigned short tx_zc_capable:1; /* payload is large enough for ZC */
282 unsigned short tx_zc_checked:1; /* Have I checked if I should ZC? */
283 unsigned short tx_nonblk:1; /* it's a non-blocking ACK */
284 struct bio_vec *tx_kiov; /* packet page frags */
285 struct ksock_conn *tx_conn; /* owning conn */
286 struct lnet_msg *tx_lnetmsg; /* lnet message for lnet_finalize()
288 unsigned long tx_deadline; /* when (in jiffies) tx times out */
289 struct ksock_msg tx_msg; /* socklnd message buffer */
290 int tx_desc_size; /* size of this descriptor */
293 struct kvec iov; /* virt hdr */
294 struct bio_vec kiov[0]; /* paged payload */
297 struct kvec iov[1]; /* virt hdr + payload */
302 #define KSOCK_NOOP_TX_SIZE (offsetof(struct ksock_tx, tx_frags.paged.kiov[0]))
304 /* network zero copy callback descriptor embedded in struct ksock_tx */
307 * space for the rx frag descriptors; we either read a single contiguous
308 * header, or up to LNET_MAX_IOV frags of payload of either type.
310 union ksock_rxiovspace {
311 struct kvec iov[LNET_MAX_IOV];
312 struct bio_vec kiov[LNET_MAX_IOV];
315 #define SOCKNAL_RX_KSM_HEADER 1 /* reading ksock message header */
316 #define SOCKNAL_RX_LNET_HEADER 2 /* reading lnet message header */
317 #define SOCKNAL_RX_PARSE 3 /* Calling lnet_parse() */
318 #define SOCKNAL_RX_PARSE_WAIT 4 /* waiting to be told to read the body */
319 #define SOCKNAL_RX_LNET_PAYLOAD 5 /* reading lnet payload (to deliver here) */
320 #define SOCKNAL_RX_SLOP 6 /* skipping body */
323 struct ksock_peer *ksnc_peer; /* owning peer */
324 struct ksock_route *ksnc_route; /* owning route */
325 struct list_head ksnc_list; /* stash on peer's conn list */
326 struct socket *ksnc_sock; /* actual socket */
327 void *ksnc_saved_data_ready; /* socket's original
328 * data_ready() callback
330 void *ksnc_saved_write_space; /* socket's original
331 * write_space() callback
333 atomic_t ksnc_conn_refcount;/* conn refcount */
334 atomic_t ksnc_sock_refcount;/* sock refcount */
335 struct ksock_sched *ksnc_scheduler; /* who schedules this connection
337 __u32 ksnc_myipaddr; /* my IP */
338 __u32 ksnc_ipaddr; /* peer's IP */
339 int ksnc_port; /* peer's port */
340 signed int ksnc_type:3; /* type of connection, should be
343 unsigned int ksnc_closing:1; /* being shut down */
344 unsigned int ksnc_flip:1; /* flip or not, only for V2.x */
345 unsigned int ksnc_zc_capable:1; /* enable to ZC */
346 struct ksock_proto *ksnc_proto; /* protocol for the connection */
349 struct list_head ksnc_rx_list; /* where I enq waiting input or a
350 * forwarding descriptor
352 unsigned long ksnc_rx_deadline; /* when (in jiffies) receive times
355 __u8 ksnc_rx_started; /* started receiving a message */
356 __u8 ksnc_rx_ready; /* data ready to read */
357 __u8 ksnc_rx_scheduled; /* being progressed */
358 __u8 ksnc_rx_state; /* what is being read */
359 int ksnc_rx_nob_left; /* # bytes to next hdr/body */
360 int ksnc_rx_nob_wanted;/* bytes actually wanted */
361 int ksnc_rx_niov; /* # iovec frags */
362 struct kvec *ksnc_rx_iov; /* the iovec frags */
363 int ksnc_rx_nkiov; /* # page frags */
364 struct bio_vec *ksnc_rx_kiov; /* the page frags */
365 union ksock_rxiovspace ksnc_rx_iov_space; /* space for frag descriptors */
366 __u32 ksnc_rx_csum; /* partial checksum for incoming
369 void *ksnc_cookie; /* rx lnet_finalize passthru arg
371 struct ksock_msg ksnc_msg; /* incoming message buffer:
372 * V2.x message takes the
374 * V1.x message is a bare
375 * struct lnet_hdr, it's stored in
376 * ksnc_msg.ksm_u.lnetmsg
379 struct list_head ksnc_tx_list; /* where I enq waiting for output
382 struct list_head ksnc_tx_queue; /* packets waiting to be sent */
383 struct ksock_tx *ksnc_tx_carrier; /* next TX that can carry a LNet
386 unsigned long ksnc_tx_deadline; /* when (in jiffies) tx times out
388 int ksnc_tx_bufnob; /* send buffer marker */
389 atomic_t ksnc_tx_nob; /* # bytes queued */
390 int ksnc_tx_ready; /* write space */
391 int ksnc_tx_scheduled; /* being progressed */
392 unsigned long ksnc_tx_last_post; /* time stamp of the last posted
398 struct list_head ksnr_list; /* chain on peer route list */
399 struct list_head ksnr_connd_list; /* chain on ksnr_connd_routes */
400 struct ksock_peer *ksnr_peer; /* owning peer */
401 atomic_t ksnr_refcount; /* # users */
402 unsigned long ksnr_timeout; /* when (in jiffies) reconnection
405 long ksnr_retry_interval; /* how long between retries */
406 __u32 ksnr_myipaddr; /* my IP */
407 __u32 ksnr_ipaddr; /* IP address to connect to */
408 int ksnr_port; /* port to connect to */
409 unsigned int ksnr_scheduled:1; /* scheduled for attention */
410 unsigned int ksnr_connecting:1; /* connection establishment in
413 unsigned int ksnr_connected:4; /* connections established by
416 unsigned int ksnr_deleted:1; /* been removed from peer? */
417 unsigned int ksnr_share_count; /* created explicitly? */
418 int ksnr_conn_count; /* # conns established by this
423 #define SOCKNAL_KEEPALIVE_PING 1 /* cookie for keepalive ping */
426 struct list_head ksnp_list; /* stash on global peer list */
427 unsigned long ksnp_last_alive; /* when (in jiffies) I was last
430 struct lnet_process_id ksnp_id; /* who's on the other end(s) */
431 atomic_t ksnp_refcount; /* # users */
432 int ksnp_sharecount; /* lconf usage counter */
433 int ksnp_closing; /* being closed */
434 int ksnp_accepting; /* # passive connections pending
436 int ksnp_error; /* errno on closing last conn */
437 __u64 ksnp_zc_next_cookie; /* ZC completion cookie */
438 __u64 ksnp_incarnation; /* latest known peer incarnation
440 struct ksock_proto *ksnp_proto; /* latest known peer protocol */
441 struct list_head ksnp_conns; /* all active connections */
442 struct list_head ksnp_routes; /* routes */
443 struct list_head ksnp_tx_queue; /* waiting packets */
444 spinlock_t ksnp_lock; /* serialize, g_lock unsafe */
445 struct list_head ksnp_zc_req_list; /* zero copy requests wait for
448 unsigned long ksnp_send_keepalive; /* time to send keepalive */
449 struct lnet_ni *ksnp_ni; /* which network */
450 int ksnp_n_passive_ips; /* # of... */
452 /* preferred local interfaces */
453 __u32 ksnp_passive_ips[LNET_MAX_INTERFACES];
456 struct ksock_connreq {
457 struct list_head ksncr_list; /* stash on ksnd_connd_connreqs */
458 struct lnet_ni *ksncr_ni; /* chosen NI */
459 struct socket *ksncr_sock; /* accepted socket */
462 extern struct ksock_nal_data ksocknal_data;
463 extern struct ksock_tunables ksocknal_tunables;
465 #define SOCKNAL_MATCH_NO 0 /* TX can't match type of connection */
466 #define SOCKNAL_MATCH_YES 1 /* TX matches type of connection */
467 #define SOCKNAL_MATCH_MAY 2 /* TX can be sent on the connection, but not
472 /* version number of protocol */
475 /* handshake function */
476 int (*pro_send_hello)(struct ksock_conn *, struct ksock_hello_msg *);
478 /* handshake function */
479 int (*pro_recv_hello)(struct ksock_conn *, struct ksock_hello_msg *, int);
482 void (*pro_pack)(struct ksock_tx *);
485 void (*pro_unpack)(struct ksock_msg *);
487 /* queue tx on the connection */
488 struct ksock_tx *(*pro_queue_tx_msg)(struct ksock_conn *, struct ksock_tx *);
490 /* queue ZC ack on the connection */
491 int (*pro_queue_tx_zcack)(struct ksock_conn *, struct ksock_tx *, __u64);
493 /* handle ZC request */
494 int (*pro_handle_zcreq)(struct ksock_conn *, __u64, int);
497 int (*pro_handle_zcack)(struct ksock_conn *, __u64, __u64);
500 * msg type matches the connection type:
502 * return MATCH_NO : no
503 * return MATCH_YES : matching type
504 * return MATCH_MAY : can be backup
506 int (*pro_match_tx)(struct ksock_conn *, struct ksock_tx *, int);
509 extern struct ksock_proto ksocknal_protocol_v1x;
510 extern struct ksock_proto ksocknal_protocol_v2x;
511 extern struct ksock_proto ksocknal_protocol_v3x;
513 #define KSOCK_PROTO_V1_MAJOR LNET_PROTO_TCP_VERSION_MAJOR
514 #define KSOCK_PROTO_V1_MINOR LNET_PROTO_TCP_VERSION_MINOR
515 #define KSOCK_PROTO_V1 KSOCK_PROTO_V1_MAJOR
517 #ifndef CPU_MASK_NONE
518 #define CPU_MASK_NONE 0UL
522 ksocknal_route_mask(void)
524 if (!*ksocknal_tunables.ksnd_typed_conns)
525 return (1 << SOCKLND_CONN_ANY);
527 return ((1 << SOCKLND_CONN_CONTROL) |
528 (1 << SOCKLND_CONN_BULK_IN) |
529 (1 << SOCKLND_CONN_BULK_OUT));
532 static inline struct list_head *
533 ksocknal_nid2peerlist(lnet_nid_t nid)
535 unsigned int hash = ((unsigned int)nid) % ksocknal_data.ksnd_peer_hash_size;
537 return &ksocknal_data.ksnd_peers[hash];
541 ksocknal_conn_addref(struct ksock_conn *conn)
543 LASSERT(atomic_read(&conn->ksnc_conn_refcount) > 0);
544 atomic_inc(&conn->ksnc_conn_refcount);
547 void ksocknal_queue_zombie_conn(struct ksock_conn *conn);
548 void ksocknal_finalize_zcreq(struct ksock_conn *conn);
551 ksocknal_conn_decref(struct ksock_conn *conn)
553 LASSERT(atomic_read(&conn->ksnc_conn_refcount) > 0);
554 if (atomic_dec_and_test(&conn->ksnc_conn_refcount))
555 ksocknal_queue_zombie_conn(conn);
559 ksocknal_connsock_addref(struct ksock_conn *conn)
563 read_lock(&ksocknal_data.ksnd_global_lock);
564 if (!conn->ksnc_closing) {
565 LASSERT(atomic_read(&conn->ksnc_sock_refcount) > 0);
566 atomic_inc(&conn->ksnc_sock_refcount);
569 read_unlock(&ksocknal_data.ksnd_global_lock);
575 ksocknal_connsock_decref(struct ksock_conn *conn)
577 LASSERT(atomic_read(&conn->ksnc_sock_refcount) > 0);
578 if (atomic_dec_and_test(&conn->ksnc_sock_refcount)) {
579 LASSERT(conn->ksnc_closing);
580 sock_release(conn->ksnc_sock);
581 conn->ksnc_sock = NULL;
582 ksocknal_finalize_zcreq(conn);
587 ksocknal_tx_addref(struct ksock_tx *tx)
589 LASSERT(atomic_read(&tx->tx_refcount) > 0);
590 atomic_inc(&tx->tx_refcount);
593 void ksocknal_tx_prep(struct ksock_conn *, struct ksock_tx *tx);
594 void ksocknal_tx_done(struct lnet_ni *ni, struct ksock_tx *tx);
597 ksocknal_tx_decref(struct ksock_tx *tx)
599 LASSERT(atomic_read(&tx->tx_refcount) > 0);
600 if (atomic_dec_and_test(&tx->tx_refcount))
601 ksocknal_tx_done(NULL, tx);
605 ksocknal_route_addref(struct ksock_route *route)
607 LASSERT(atomic_read(&route->ksnr_refcount) > 0);
608 atomic_inc(&route->ksnr_refcount);
611 void ksocknal_destroy_route(struct ksock_route *route);
614 ksocknal_route_decref(struct ksock_route *route)
616 LASSERT(atomic_read(&route->ksnr_refcount) > 0);
617 if (atomic_dec_and_test(&route->ksnr_refcount))
618 ksocknal_destroy_route(route);
622 ksocknal_peer_addref(struct ksock_peer *peer)
624 LASSERT(atomic_read(&peer->ksnp_refcount) > 0);
625 atomic_inc(&peer->ksnp_refcount);
628 void ksocknal_destroy_peer(struct ksock_peer *peer);
631 ksocknal_peer_decref(struct ksock_peer *peer)
633 LASSERT(atomic_read(&peer->ksnp_refcount) > 0);
634 if (atomic_dec_and_test(&peer->ksnp_refcount))
635 ksocknal_destroy_peer(peer);
638 int ksocknal_startup(struct lnet_ni *ni);
639 void ksocknal_shutdown(struct lnet_ni *ni);
640 int ksocknal_ctl(struct lnet_ni *ni, unsigned int cmd, void *arg);
641 int ksocknal_send(struct lnet_ni *ni, void *private, struct lnet_msg *lntmsg);
642 int ksocknal_recv(struct lnet_ni *ni, void *private, struct lnet_msg *lntmsg,
643 int delayed, struct iov_iter *to, unsigned int rlen);
644 int ksocknal_accept(struct lnet_ni *ni, struct socket *sock);
646 int ksocknal_add_peer(struct lnet_ni *ni, struct lnet_process_id id, __u32 ip,
648 struct ksock_peer *ksocknal_find_peer_locked(struct lnet_ni *ni,
649 struct lnet_process_id id);
650 struct ksock_peer *ksocknal_find_peer(struct lnet_ni *ni,
651 struct lnet_process_id id);
652 void ksocknal_peer_failed(struct ksock_peer *peer);
653 int ksocknal_create_conn(struct lnet_ni *ni, struct ksock_route *route,
654 struct socket *sock, int type);
655 void ksocknal_close_conn_locked(struct ksock_conn *conn, int why);
656 void ksocknal_terminate_conn(struct ksock_conn *conn);
657 void ksocknal_destroy_conn(struct ksock_conn *conn);
658 int ksocknal_close_peer_conns_locked(struct ksock_peer *peer,
659 __u32 ipaddr, int why);
660 int ksocknal_close_conn_and_siblings(struct ksock_conn *conn, int why);
661 int ksocknal_close_matching_conns(struct lnet_process_id id, __u32 ipaddr);
662 struct ksock_conn *ksocknal_find_conn_locked(struct ksock_peer *peer,
663 struct ksock_tx *tx, int nonblk);
665 int ksocknal_launch_packet(struct lnet_ni *ni, struct ksock_tx *tx,
666 struct lnet_process_id id);
667 struct ksock_tx *ksocknal_alloc_tx(int type, int size);
668 void ksocknal_free_tx(struct ksock_tx *tx);
669 struct ksock_tx *ksocknal_alloc_tx_noop(__u64 cookie, int nonblk);
670 void ksocknal_next_tx_carrier(struct ksock_conn *conn);
671 void ksocknal_queue_tx_locked(struct ksock_tx *tx, struct ksock_conn *conn);
672 void ksocknal_txlist_done(struct lnet_ni *ni, struct list_head *txlist, int error);
673 void ksocknal_notify(struct lnet_ni *ni, lnet_nid_t gw_nid, int alive);
674 void ksocknal_query(struct lnet_ni *ni, lnet_nid_t nid, unsigned long *when);
675 int ksocknal_thread_start(int (*fn)(void *arg), void *arg, char *name);
676 void ksocknal_thread_fini(void);
677 void ksocknal_launch_all_connections_locked(struct ksock_peer *peer);
678 struct ksock_route *ksocknal_find_connectable_route_locked(struct ksock_peer *peer);
679 struct ksock_route *ksocknal_find_connecting_route_locked(struct ksock_peer *peer);
680 int ksocknal_new_packet(struct ksock_conn *conn, int skip);
681 int ksocknal_scheduler(void *arg);
682 int ksocknal_connd(void *arg);
683 int ksocknal_reaper(void *arg);
684 int ksocknal_send_hello(struct lnet_ni *ni, struct ksock_conn *conn,
685 lnet_nid_t peer_nid, struct ksock_hello_msg *hello);
686 int ksocknal_recv_hello(struct lnet_ni *ni, struct ksock_conn *conn,
687 struct ksock_hello_msg *hello,
688 struct lnet_process_id *id,
690 void ksocknal_read_callback(struct ksock_conn *conn);
691 void ksocknal_write_callback(struct ksock_conn *conn);
693 int ksocknal_lib_zc_capable(struct ksock_conn *conn);
694 void ksocknal_lib_save_callback(struct socket *sock, struct ksock_conn *conn);
695 void ksocknal_lib_set_callback(struct socket *sock, struct ksock_conn *conn);
696 void ksocknal_lib_reset_callback(struct socket *sock, struct ksock_conn *conn);
697 void ksocknal_lib_push_conn(struct ksock_conn *conn);
698 int ksocknal_lib_get_conn_addrs(struct ksock_conn *conn);
699 int ksocknal_lib_setup_sock(struct socket *so);
700 int ksocknal_lib_send_iov(struct ksock_conn *conn, struct ksock_tx *tx);
701 int ksocknal_lib_send_kiov(struct ksock_conn *conn, struct ksock_tx *tx);
702 void ksocknal_lib_eager_ack(struct ksock_conn *conn);
703 int ksocknal_lib_recv_iov(struct ksock_conn *conn);
704 int ksocknal_lib_recv_kiov(struct ksock_conn *conn);
705 int ksocknal_lib_get_conn_tunables(struct ksock_conn *conn, int *txmem,
706 int *rxmem, int *nagle);
708 void ksocknal_read_callback(struct ksock_conn *conn);
709 void ksocknal_write_callback(struct ksock_conn *conn);
711 int ksocknal_tunables_init(void);
713 void ksocknal_lib_csum_tx(struct ksock_tx *tx);
715 int ksocknal_lib_memory_pressure(struct ksock_conn *conn);
716 int ksocknal_lib_bind_thread_to_cpu(int id);
718 #endif /* _SOCKLND_SOCKLND_H_ */