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 "../../../include/linux/libcfs/libcfs.h"
50 #include "../../../include/linux/lnet/lnet.h"
51 #include "../../../include/linux/lnet/lib-lnet.h"
52 #include "../../../include/linux/lnet/socklnd.h"
54 /* assume one thread for each connection type */
55 #define SOCKNAL_NSCHEDS 3
56 #define SOCKNAL_NSCHEDS_HIGH (SOCKNAL_NSCHEDS << 1)
58 #define SOCKNAL_PEER_HASH_SIZE 101 /* # peer lists */
59 #define SOCKNAL_RESCHED 100 /* # scheduler loops before reschedule */
60 #define SOCKNAL_INSANITY_RECONN 5000 /* connd is trying on reconn infinitely */
61 #define SOCKNAL_ENOMEM_RETRY CFS_TICK /* jiffies between retries */
63 #define SOCKNAL_SINGLE_FRAG_TX 0 /* disable multi-fragment sends */
64 #define SOCKNAL_SINGLE_FRAG_RX 0 /* disable multi-fragment receives */
66 #define SOCKNAL_VERSION_DEBUG 0 /* enable protocol version debugging */
69 * risk kmap deadlock on multi-frag I/O (backs off to single-frag if disabled).
70 * no risk if we're not running on a CONFIG_HIGHMEM platform.
73 # define SOCKNAL_RISK_KMAP_DEADLOCK 0
75 # define SOCKNAL_RISK_KMAP_DEADLOCK 1
78 struct ksock_sched_info;
80 struct ksock_sched { /* per scheduler state */
81 spinlock_t kss_lock; /* serialise */
82 struct list_head kss_rx_conns; /* conn waiting to be read */
83 struct list_head kss_tx_conns; /* conn waiting to be written */
84 struct list_head kss_zombie_noop_txs; /* zombie noop tx list */
85 wait_queue_head_t kss_waitq; /* where scheduler sleeps */
86 int kss_nconns; /* # connections assigned to
88 struct ksock_sched_info *kss_info; /* owner of it */
89 struct page *kss_rx_scratch_pgs[LNET_MAX_IOV];
90 struct kvec kss_scratch_iov[LNET_MAX_IOV];
93 struct ksock_sched_info {
94 int ksi_nthreads_max; /* max allowed threads */
95 int ksi_nthreads; /* number of threads */
96 int ksi_cpt; /* CPT id */
97 struct ksock_sched *ksi_scheds; /* array of schedulers */
100 #define KSOCK_CPT_SHIFT 16
101 #define KSOCK_THREAD_ID(cpt, sid) (((cpt) << KSOCK_CPT_SHIFT) | (sid))
102 #define KSOCK_THREAD_CPT(id) ((id) >> KSOCK_CPT_SHIFT)
103 #define KSOCK_THREAD_SID(id) ((id) & ((1UL << KSOCK_CPT_SHIFT) - 1))
105 struct ksock_interface { /* in-use interface */
106 __u32 ksni_ipaddr; /* interface's IP address */
107 __u32 ksni_netmask; /* interface's network mask */
108 int ksni_nroutes; /* # routes using (active) */
109 int ksni_npeers; /* # peers using (passive) */
110 char ksni_name[IFNAMSIZ]; /* interface name */
113 struct ksock_tunables {
114 int *ksnd_timeout; /* "stuck" socket timeout
116 int *ksnd_nscheds; /* # scheduler threads in each
117 * 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
122 int *ksnd_max_reconnectms; /* ...exponentially increasing to
124 int *ksnd_eager_ack; /* make TCP ack eagerly? */
125 int *ksnd_typed_conns; /* drive sockets by type? */
126 int *ksnd_min_bulk; /* smallest "large" message */
127 int *ksnd_tx_buffer_size; /* socket tx buffer size */
128 int *ksnd_rx_buffer_size; /* socket rx buffer size */
129 int *ksnd_nagle; /* enable NAGLE? */
130 int *ksnd_round_robin; /* round robin for multiple
132 int *ksnd_keepalive; /* # secs for sending keepalive
134 int *ksnd_keepalive_idle; /* # idle secs before 1st probe
136 int *ksnd_keepalive_count; /* # probes */
137 int *ksnd_keepalive_intvl; /* time between probes */
138 int *ksnd_credits; /* # concurrent sends */
139 int *ksnd_peertxcredits; /* # concurrent sends to 1 peer
141 int *ksnd_peerrtrcredits; /* # per-peer router buffer
143 int *ksnd_peertimeout; /* seconds to consider peer dead
145 int *ksnd_enable_csum; /* enable check sum */
146 int *ksnd_inject_csum_error; /* set non-zero to inject
148 int *ksnd_nonblk_zcack; /* always send zc-ack on
149 * non-blocking connection */
150 unsigned int *ksnd_zc_min_payload; /* minimum zero copy payload
152 int *ksnd_zc_recv; /* enable ZC receive (for
154 int *ksnd_zc_recv_min_nfrags; /* minimum # of fragments to
155 * enable ZC receive */
159 __u64 ksnn_incarnation; /* my epoch */
160 spinlock_t ksnn_lock; /* serialise */
161 struct list_head ksnn_list; /* chain on global list */
162 int ksnn_npeers; /* # peers */
163 int ksnn_shutdown; /* shutting down? */
164 int ksnn_ninterfaces; /* IP interfaces */
165 struct ksock_interface ksnn_interfaces[LNET_MAX_INTERFACES];
169 #define SOCKNAL_CONND_TIMEOUT 120
170 /** reserved thread for accepting & creating new connd */
171 #define SOCKNAL_CONND_RESV 1
173 struct ksock_nal_data {
174 int ksnd_init; /* initialisation state
176 int ksnd_nnets; /* # networks set up */
177 struct list_head ksnd_nets; /* list of nets */
178 rwlock_t ksnd_global_lock; /* stabilize peer/conn
180 struct list_head *ksnd_peers; /* hash table of all my
182 int ksnd_peer_hash_size; /* size of ksnd_peers */
184 int ksnd_nthreads; /* # live threads */
185 int ksnd_shuttingdown; /* tell threads to exit
187 struct ksock_sched_info **ksnd_sched_info; /* schedulers info */
189 atomic_t ksnd_nactive_txs; /* #active txs */
191 struct list_head ksnd_deathrow_conns; /* conns to close:
193 struct list_head ksnd_zombie_conns; /* conns to free:
195 struct list_head ksnd_enomem_conns; /* conns to retry:
197 wait_queue_head_t ksnd_reaper_waitq; /* reaper sleeps here */
198 unsigned long ksnd_reaper_waketime; /* when reaper will wake
200 spinlock_t ksnd_reaper_lock; /* serialise */
202 int ksnd_enomem_tx; /* test ENOMEM sender */
203 int ksnd_stall_tx; /* test sluggish sender
205 int ksnd_stall_rx; /* test sluggish
208 struct list_head ksnd_connd_connreqs; /* incoming connection
210 struct list_head ksnd_connd_routes; /* routes waiting to be
212 wait_queue_head_t ksnd_connd_waitq; /* connds sleep here */
213 int ksnd_connd_connecting; /* # connds connecting
215 time64_t ksnd_connd_failed_stamp;/* time stamp of the
217 * connecting attempt */
218 time64_t ksnd_connd_starting_stamp;/* time stamp of the
219 * last starting connd
221 unsigned ksnd_connd_starting; /* # starting connd */
222 unsigned ksnd_connd_running; /* # running connd */
223 spinlock_t ksnd_connd_lock; /* serialise */
225 struct list_head ksnd_idle_noop_txs; /* list head for freed
227 spinlock_t ksnd_tx_lock; /* serialise, g_lock
232 #define SOCKNAL_INIT_NOTHING 0
233 #define SOCKNAL_INIT_DATA 1
234 #define SOCKNAL_INIT_ALL 2
237 * A packet just assembled for transmission is represented by 1 or more
238 * struct iovec fragments (the first frag contains the portals header),
239 * followed by 0 or more lnet_kiov_t fragments.
241 * On the receive side, initially 1 struct iovec fragment is posted for
242 * receive (the header). Once the header has been received, the payload is
243 * received into either struct iovec or lnet_kiov_t fragments, depending on
244 * what the header matched or whether the message needs forwarding.
246 struct ksock_conn; /* forward ref */
247 struct ksock_peer; /* forward ref */
248 struct ksock_route; /* forward ref */
249 struct ksock_proto; /* forward ref */
251 struct ksock_tx { /* transmit packet */
252 struct list_head tx_list; /* queue on conn for transmission etc
254 struct list_head tx_zc_list; /* queue on peer for ZC request */
255 atomic_t tx_refcount; /* tx reference count */
256 int tx_nob; /* # packet bytes */
257 int tx_resid; /* residual bytes */
258 int tx_niov; /* # packet iovec frags */
259 struct kvec *tx_iov; /* packet iovec frags */
260 int tx_nkiov; /* # packet page frags */
261 unsigned short tx_zc_aborted; /* aborted ZC request */
262 unsigned short tx_zc_capable:1; /* payload is large enough for ZC */
263 unsigned short tx_zc_checked:1; /* Have I checked if I should ZC? */
264 unsigned short tx_nonblk:1; /* it's a non-blocking ACK */
265 lnet_kiov_t *tx_kiov; /* packet page frags */
266 struct ksock_conn *tx_conn; /* owning conn */
267 lnet_msg_t *tx_lnetmsg; /* lnet message for lnet_finalize()
269 unsigned long tx_deadline; /* when (in jiffies) tx times out */
270 ksock_msg_t tx_msg; /* socklnd message buffer */
271 int tx_desc_size; /* size of this descriptor */
274 struct kvec iov; /* virt hdr */
275 lnet_kiov_t kiov[0]; /* paged payload */
278 struct kvec iov[1]; /* virt hdr + payload */
283 #define KSOCK_NOOP_TX_SIZE (offsetof(struct ksock_tx, tx_frags.paged.kiov[0]))
285 /* network zero copy callback descriptor embedded in struct ksock_tx */
288 * space for the rx frag descriptors; we either read a single contiguous
289 * header, or up to LNET_MAX_IOV frags of payload of either type.
291 union ksock_rxiovspace {
292 struct kvec iov[LNET_MAX_IOV];
293 lnet_kiov_t kiov[LNET_MAX_IOV];
296 #define SOCKNAL_RX_KSM_HEADER 1 /* reading ksock message header */
297 #define SOCKNAL_RX_LNET_HEADER 2 /* reading lnet message header */
298 #define SOCKNAL_RX_PARSE 3 /* Calling lnet_parse() */
299 #define SOCKNAL_RX_PARSE_WAIT 4 /* waiting to be told to read the body */
300 #define SOCKNAL_RX_LNET_PAYLOAD 5 /* reading lnet payload (to deliver here) */
301 #define SOCKNAL_RX_SLOP 6 /* skipping body */
304 struct ksock_peer *ksnc_peer; /* owning peer */
305 struct ksock_route *ksnc_route; /* owning route */
306 struct list_head ksnc_list; /* stash on peer's conn list */
307 struct socket *ksnc_sock; /* actual socket */
308 void *ksnc_saved_data_ready; /* socket's original
309 * data_ready() callback */
310 void *ksnc_saved_write_space; /* socket's original
311 * write_space() callback */
312 atomic_t ksnc_conn_refcount;/* conn refcount */
313 atomic_t ksnc_sock_refcount;/* sock refcount */
314 struct ksock_sched *ksnc_scheduler; /* who schedules this connection
316 __u32 ksnc_myipaddr; /* my IP */
317 __u32 ksnc_ipaddr; /* peer's IP */
318 int ksnc_port; /* peer's port */
319 signed int ksnc_type:3; /* type of connection, should be
321 unsigned int ksnc_closing:1; /* being shut down */
322 unsigned int ksnc_flip:1; /* flip or not, only for V2.x */
323 unsigned int ksnc_zc_capable:1; /* enable to ZC */
324 struct ksock_proto *ksnc_proto; /* protocol for the connection */
327 struct list_head ksnc_rx_list; /* where I enq waiting input or a
328 * forwarding descriptor */
329 unsigned long ksnc_rx_deadline; /* when (in jiffies) receive times
331 __u8 ksnc_rx_started; /* started receiving a message */
332 __u8 ksnc_rx_ready; /* data ready to read */
333 __u8 ksnc_rx_scheduled; /* being progressed */
334 __u8 ksnc_rx_state; /* what is being read */
335 int ksnc_rx_nob_left; /* # bytes to next hdr/body */
336 int ksnc_rx_nob_wanted;/* bytes actually wanted */
337 int ksnc_rx_niov; /* # iovec frags */
338 struct kvec *ksnc_rx_iov; /* the iovec frags */
339 int ksnc_rx_nkiov; /* # page frags */
340 lnet_kiov_t *ksnc_rx_kiov; /* the page frags */
341 union ksock_rxiovspace ksnc_rx_iov_space; /* space for frag descriptors */
342 __u32 ksnc_rx_csum; /* partial checksum for incoming
344 void *ksnc_cookie; /* rx lnet_finalize passthru arg
346 ksock_msg_t ksnc_msg; /* incoming message buffer:
347 * V2.x message takes the
349 * V1.x message is a bare
350 * lnet_hdr_t, it's stored in
351 * ksnc_msg.ksm_u.lnetmsg */
354 struct list_head ksnc_tx_list; /* where I enq waiting for output
356 struct list_head ksnc_tx_queue; /* packets waiting to be sent */
357 struct ksock_tx *ksnc_tx_carrier; /* next TX that can carry a LNet
358 * message or ZC-ACK */
359 unsigned long ksnc_tx_deadline; /* when (in jiffies) tx times out
361 int ksnc_tx_bufnob; /* send buffer marker */
362 atomic_t ksnc_tx_nob; /* # bytes queued */
363 int ksnc_tx_ready; /* write space */
364 int ksnc_tx_scheduled; /* being progressed */
365 unsigned long ksnc_tx_last_post; /* time stamp of the last posted
370 struct list_head ksnr_list; /* chain on peer route list */
371 struct list_head ksnr_connd_list; /* chain on ksnr_connd_routes */
372 struct ksock_peer *ksnr_peer; /* owning peer */
373 atomic_t ksnr_refcount; /* # users */
374 unsigned long ksnr_timeout; /* when (in jiffies) reconnection
376 long ksnr_retry_interval; /* how long between retries */
377 __u32 ksnr_myipaddr; /* my IP */
378 __u32 ksnr_ipaddr; /* IP address to connect to */
379 int ksnr_port; /* port to connect to */
380 unsigned int ksnr_scheduled:1; /* scheduled for attention */
381 unsigned int ksnr_connecting:1; /* connection establishment in
383 unsigned int ksnr_connected:4; /* connections established by
385 unsigned int ksnr_deleted:1; /* been removed from peer? */
386 unsigned int ksnr_share_count; /* created explicitly? */
387 int ksnr_conn_count; /* # conns established by this
391 #define SOCKNAL_KEEPALIVE_PING 1 /* cookie for keepalive ping */
394 struct list_head ksnp_list; /* stash on global peer list */
395 unsigned long ksnp_last_alive; /* when (in jiffies) I was last
397 lnet_process_id_t ksnp_id; /* who's on the other end(s) */
398 atomic_t ksnp_refcount; /* # users */
399 int ksnp_sharecount; /* lconf usage counter */
400 int ksnp_closing; /* being closed */
401 int ksnp_accepting; /* # passive connections pending
403 int ksnp_error; /* errno on closing last conn */
404 __u64 ksnp_zc_next_cookie; /* ZC completion cookie */
405 __u64 ksnp_incarnation; /* latest known peer incarnation
407 struct ksock_proto *ksnp_proto; /* latest known peer protocol */
408 struct list_head ksnp_conns; /* all active connections */
409 struct list_head ksnp_routes; /* routes */
410 struct list_head ksnp_tx_queue; /* waiting packets */
411 spinlock_t ksnp_lock; /* serialize, g_lock unsafe */
412 struct list_head ksnp_zc_req_list; /* zero copy requests wait for
414 unsigned long ksnp_send_keepalive; /* time to send keepalive */
415 lnet_ni_t *ksnp_ni; /* which network */
416 int ksnp_n_passive_ips; /* # of... */
418 /* preferred local interfaces */
419 __u32 ksnp_passive_ips[LNET_MAX_INTERFACES];
422 struct ksock_connreq {
423 struct list_head ksncr_list; /* stash on ksnd_connd_connreqs */
424 lnet_ni_t *ksncr_ni; /* chosen NI */
425 struct socket *ksncr_sock; /* accepted socket */
428 extern struct ksock_nal_data ksocknal_data;
429 extern struct ksock_tunables ksocknal_tunables;
431 #define SOCKNAL_MATCH_NO 0 /* TX can't match type of connection */
432 #define SOCKNAL_MATCH_YES 1 /* TX matches type of connection */
433 #define SOCKNAL_MATCH_MAY 2 /* TX can be sent on the connection, but not
437 /* version number of protocol */
440 /* handshake function */
441 int (*pro_send_hello)(struct ksock_conn *, ksock_hello_msg_t *);
443 /* handshake function */
444 int (*pro_recv_hello)(struct ksock_conn *, ksock_hello_msg_t *, int);
447 void (*pro_pack)(struct ksock_tx *);
450 void (*pro_unpack)(ksock_msg_t *);
452 /* queue tx on the connection */
453 struct ksock_tx *(*pro_queue_tx_msg)(struct ksock_conn *, struct ksock_tx *);
455 /* queue ZC ack on the connection */
456 int (*pro_queue_tx_zcack)(struct ksock_conn *, struct ksock_tx *, __u64);
458 /* handle ZC request */
459 int (*pro_handle_zcreq)(struct ksock_conn *, __u64, int);
462 int (*pro_handle_zcack)(struct ksock_conn *, __u64, __u64);
465 * msg type matches the connection type:
467 * return MATCH_NO : no
468 * return MATCH_YES : matching type
469 * return MATCH_MAY : can be backup
471 int (*pro_match_tx)(struct ksock_conn *, struct ksock_tx *, int);
474 extern struct ksock_proto ksocknal_protocol_v1x;
475 extern struct ksock_proto ksocknal_protocol_v2x;
476 extern struct ksock_proto ksocknal_protocol_v3x;
478 #define KSOCK_PROTO_V1_MAJOR LNET_PROTO_TCP_VERSION_MAJOR
479 #define KSOCK_PROTO_V1_MINOR LNET_PROTO_TCP_VERSION_MINOR
480 #define KSOCK_PROTO_V1 KSOCK_PROTO_V1_MAJOR
482 #ifndef CPU_MASK_NONE
483 #define CPU_MASK_NONE 0UL
486 static inline __u32 ksocknal_csum(__u32 crc, unsigned char const *p, size_t len)
489 return crc32_le(crc, p, len);
492 crc = ((crc + 0x100) & ~0xff) | ((crc + *p++) & 0xff) ;
498 ksocknal_route_mask(void)
500 if (!*ksocknal_tunables.ksnd_typed_conns)
501 return (1 << SOCKLND_CONN_ANY);
503 return ((1 << SOCKLND_CONN_CONTROL) |
504 (1 << SOCKLND_CONN_BULK_IN) |
505 (1 << SOCKLND_CONN_BULK_OUT));
508 static inline struct list_head *
509 ksocknal_nid2peerlist(lnet_nid_t nid)
511 unsigned int hash = ((unsigned int)nid) % ksocknal_data.ksnd_peer_hash_size;
513 return &ksocknal_data.ksnd_peers[hash];
517 ksocknal_conn_addref(struct ksock_conn *conn)
519 LASSERT(atomic_read(&conn->ksnc_conn_refcount) > 0);
520 atomic_inc(&conn->ksnc_conn_refcount);
523 void ksocknal_queue_zombie_conn(struct ksock_conn *conn);
524 void ksocknal_finalize_zcreq(struct ksock_conn *conn);
527 ksocknal_conn_decref(struct ksock_conn *conn)
529 LASSERT(atomic_read(&conn->ksnc_conn_refcount) > 0);
530 if (atomic_dec_and_test(&conn->ksnc_conn_refcount))
531 ksocknal_queue_zombie_conn(conn);
535 ksocknal_connsock_addref(struct ksock_conn *conn)
539 read_lock(&ksocknal_data.ksnd_global_lock);
540 if (!conn->ksnc_closing) {
541 LASSERT(atomic_read(&conn->ksnc_sock_refcount) > 0);
542 atomic_inc(&conn->ksnc_sock_refcount);
545 read_unlock(&ksocknal_data.ksnd_global_lock);
551 ksocknal_connsock_decref(struct ksock_conn *conn)
553 LASSERT(atomic_read(&conn->ksnc_sock_refcount) > 0);
554 if (atomic_dec_and_test(&conn->ksnc_sock_refcount)) {
555 LASSERT(conn->ksnc_closing);
556 sock_release(conn->ksnc_sock);
557 conn->ksnc_sock = NULL;
558 ksocknal_finalize_zcreq(conn);
563 ksocknal_tx_addref(struct ksock_tx *tx)
565 LASSERT(atomic_read(&tx->tx_refcount) > 0);
566 atomic_inc(&tx->tx_refcount);
569 void ksocknal_tx_prep(struct ksock_conn *, struct ksock_tx *tx);
570 void ksocknal_tx_done(lnet_ni_t *ni, struct ksock_tx *tx);
573 ksocknal_tx_decref(struct ksock_tx *tx)
575 LASSERT(atomic_read(&tx->tx_refcount) > 0);
576 if (atomic_dec_and_test(&tx->tx_refcount))
577 ksocknal_tx_done(NULL, tx);
581 ksocknal_route_addref(struct ksock_route *route)
583 LASSERT(atomic_read(&route->ksnr_refcount) > 0);
584 atomic_inc(&route->ksnr_refcount);
587 void ksocknal_destroy_route(struct ksock_route *route);
590 ksocknal_route_decref(struct ksock_route *route)
592 LASSERT(atomic_read(&route->ksnr_refcount) > 0);
593 if (atomic_dec_and_test(&route->ksnr_refcount))
594 ksocknal_destroy_route(route);
598 ksocknal_peer_addref(struct ksock_peer *peer)
600 LASSERT(atomic_read(&peer->ksnp_refcount) > 0);
601 atomic_inc(&peer->ksnp_refcount);
604 void ksocknal_destroy_peer(struct ksock_peer *peer);
607 ksocknal_peer_decref(struct ksock_peer *peer)
609 LASSERT(atomic_read(&peer->ksnp_refcount) > 0);
610 if (atomic_dec_and_test(&peer->ksnp_refcount))
611 ksocknal_destroy_peer(peer);
614 int ksocknal_startup(lnet_ni_t *ni);
615 void ksocknal_shutdown(lnet_ni_t *ni);
616 int ksocknal_ctl(lnet_ni_t *ni, unsigned int cmd, void *arg);
617 int ksocknal_send(lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg);
618 int ksocknal_recv(lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg,
619 int delayed, unsigned int niov,
620 struct kvec *iov, lnet_kiov_t *kiov,
621 unsigned int offset, unsigned int mlen, unsigned int rlen);
622 int ksocknal_accept(lnet_ni_t *ni, struct socket *sock);
624 int ksocknal_add_peer(lnet_ni_t *ni, lnet_process_id_t id, __u32 ip, int port);
625 struct ksock_peer *ksocknal_find_peer_locked(lnet_ni_t *ni, lnet_process_id_t id);
626 struct ksock_peer *ksocknal_find_peer(lnet_ni_t *ni, lnet_process_id_t id);
627 void ksocknal_peer_failed(struct ksock_peer *peer);
628 int ksocknal_create_conn(lnet_ni_t *ni, struct ksock_route *route,
629 struct socket *sock, int type);
630 void ksocknal_close_conn_locked(struct ksock_conn *conn, int why);
631 void ksocknal_terminate_conn(struct ksock_conn *conn);
632 void ksocknal_destroy_conn(struct ksock_conn *conn);
633 int ksocknal_close_peer_conns_locked(struct ksock_peer *peer,
634 __u32 ipaddr, int why);
635 int ksocknal_close_conn_and_siblings(struct ksock_conn *conn, int why);
636 int ksocknal_close_matching_conns(lnet_process_id_t id, __u32 ipaddr);
637 struct ksock_conn *ksocknal_find_conn_locked(struct ksock_peer *peer,
638 struct ksock_tx *tx, int nonblk);
640 int ksocknal_launch_packet(lnet_ni_t *ni, struct ksock_tx *tx,
641 lnet_process_id_t id);
642 struct ksock_tx *ksocknal_alloc_tx(int type, int size);
643 void ksocknal_free_tx(struct ksock_tx *tx);
644 struct ksock_tx *ksocknal_alloc_tx_noop(__u64 cookie, int nonblk);
645 void ksocknal_next_tx_carrier(struct ksock_conn *conn);
646 void ksocknal_queue_tx_locked(struct ksock_tx *tx, struct ksock_conn *conn);
647 void ksocknal_txlist_done(lnet_ni_t *ni, struct list_head *txlist, int error);
648 void ksocknal_notify(lnet_ni_t *ni, lnet_nid_t gw_nid, int alive);
649 void ksocknal_query(struct lnet_ni *ni, lnet_nid_t nid, unsigned long *when);
650 int ksocknal_thread_start(int (*fn)(void *arg), void *arg, char *name);
651 void ksocknal_thread_fini(void);
652 void ksocknal_launch_all_connections_locked(struct ksock_peer *peer);
653 struct ksock_route *ksocknal_find_connectable_route_locked(struct ksock_peer *peer);
654 struct ksock_route *ksocknal_find_connecting_route_locked(struct ksock_peer *peer);
655 int ksocknal_new_packet(struct ksock_conn *conn, int skip);
656 int ksocknal_scheduler(void *arg);
657 int ksocknal_connd(void *arg);
658 int ksocknal_reaper(void *arg);
659 int ksocknal_send_hello(lnet_ni_t *ni, struct ksock_conn *conn,
660 lnet_nid_t peer_nid, ksock_hello_msg_t *hello);
661 int ksocknal_recv_hello(lnet_ni_t *ni, struct ksock_conn *conn,
662 ksock_hello_msg_t *hello, lnet_process_id_t *id,
664 void ksocknal_read_callback(struct ksock_conn *conn);
665 void ksocknal_write_callback(struct ksock_conn *conn);
667 int ksocknal_lib_zc_capable(struct ksock_conn *conn);
668 void ksocknal_lib_save_callback(struct socket *sock, struct ksock_conn *conn);
669 void ksocknal_lib_set_callback(struct socket *sock, struct ksock_conn *conn);
670 void ksocknal_lib_reset_callback(struct socket *sock, struct ksock_conn *conn);
671 void ksocknal_lib_push_conn(struct ksock_conn *conn);
672 int ksocknal_lib_get_conn_addrs(struct ksock_conn *conn);
673 int ksocknal_lib_setup_sock(struct socket *so);
674 int ksocknal_lib_send_iov(struct ksock_conn *conn, struct ksock_tx *tx);
675 int ksocknal_lib_send_kiov(struct ksock_conn *conn, struct ksock_tx *tx);
676 void ksocknal_lib_eager_ack(struct ksock_conn *conn);
677 int ksocknal_lib_recv_iov(struct ksock_conn *conn);
678 int ksocknal_lib_recv_kiov(struct ksock_conn *conn);
679 int ksocknal_lib_get_conn_tunables(struct ksock_conn *conn, int *txmem,
680 int *rxmem, int *nagle);
682 void ksocknal_read_callback(struct ksock_conn *conn);
683 void ksocknal_write_callback(struct ksock_conn *conn);
685 int ksocknal_tunables_init(void);
687 void ksocknal_lib_csum_tx(struct ksock_tx *tx);
689 int ksocknal_lib_memory_pressure(struct ksock_conn *conn);
690 int ksocknal_lib_bind_thread_to_cpu(int id);
692 #endif /* _SOCKLND_SOCKLND_H_ */