1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright 2008 Sun Microsystems, Inc. All rights reserved
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.
22 * You should have received a copy of the GNU General Public License
23 * along with Portals; if not, write to the Free Software
24 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28 #define DEBUG_PORTAL_ALLOC
30 # define EXPORT_SYMTAB
33 #define DEBUG_SUBSYSTEM S_LND
35 #if defined(__linux__)
36 #include "socklnd_lib-linux.h"
37 #elif defined(__APPLE__)
38 #include "socklnd_lib-darwin.h"
39 #elif defined(__WINNT__)
40 #include "socklnd_lib-winnt.h"
42 #error Unsupported Operating System
45 #include <libcfs/libcfs.h>
46 #include <lnet/lnet.h>
47 #include <lnet/lib-lnet.h>
48 #include <lnet/socklnd.h>
49 #include <lnet/lnet-sysctl.h>
51 #define SOCKNAL_PEER_HASH_SIZE 101 /* # peer lists */
52 #define SOCKNAL_RESCHED 100 /* # scheduler loops before reschedule */
53 #define SOCKNAL_ENOMEM_RETRY CFS_TICK /* jiffies between retries */
55 #define SOCKNAL_SINGLE_FRAG_TX 0 /* disable multi-fragment sends */
56 #define SOCKNAL_SINGLE_FRAG_RX 0 /* disable multi-fragment receives */
58 #define SOCKNAL_VERSION_DEBUG 0 /* enable protocol version debugging */
60 /* risk kmap deadlock on multi-frag I/O (backs off to single-frag if disabled).
61 * no risk if we're not running on a CONFIG_HIGHMEM platform. */
63 # define SOCKNAL_RISK_KMAP_DEADLOCK 0
65 # define SOCKNAL_RISK_KMAP_DEADLOCK 1
68 typedef struct /* per scheduler state */
70 cfs_spinlock_t kss_lock; /* serialise */
71 struct list_head kss_rx_conns; /* conn waiting to be read */
72 struct list_head kss_tx_conns; /* conn waiting to be written */
73 struct list_head kss_zombie_noop_txs; /* zombie noop tx list */
74 cfs_waitq_t kss_waitq; /* where scheduler sleeps */
75 int kss_nconns; /* # connections assigned to this scheduler */
76 #if !SOCKNAL_SINGLE_FRAG_RX
77 struct page *kss_rx_scratch_pgs[LNET_MAX_IOV];
79 #if !SOCKNAL_SINGLE_FRAG_TX || !SOCKNAL_SINGLE_FRAG_RX
80 struct iovec kss_scratch_iov[LNET_MAX_IOV];
86 unsigned int ksni_valid:1; /* been set yet? */
87 unsigned int ksni_bound:1; /* bound to a cpu yet? */
88 unsigned int ksni_sched:6; /* which scheduler (assumes < 64) */
91 typedef struct /* in-use interface */
93 __u32 ksni_ipaddr; /* interface's IP address */
94 __u32 ksni_netmask; /* interface's network mask */
95 int ksni_nroutes; /* # routes using (active) */
96 int ksni_npeers; /* # peers using (passive) */
97 char ksni_name[16]; /* interface name */
102 int *ksnd_timeout; /* "stuck" socket timeout (seconds) */
103 int *ksnd_nconnds; /* # connection daemons */
104 int *ksnd_min_reconnectms; /* first connection retry after (ms)... */
105 int *ksnd_max_reconnectms; /* ...exponentially increasing to this */
106 int *ksnd_eager_ack; /* make TCP ack eagerly? */
107 int *ksnd_typed_conns; /* drive sockets by type? */
108 int *ksnd_min_bulk; /* smallest "large" message */
109 int *ksnd_tx_buffer_size; /* socket tx buffer size */
110 int *ksnd_rx_buffer_size; /* socket rx buffer size */
111 int *ksnd_nagle; /* enable NAGLE? */
112 int *ksnd_round_robin; /* round robin for multiple interfaces */
113 int *ksnd_keepalive; /* # secs for sending keepalive NOOP */
114 int *ksnd_keepalive_idle; /* # idle secs before 1st probe */
115 int *ksnd_keepalive_count; /* # probes */
116 int *ksnd_keepalive_intvl; /* time between probes */
117 int *ksnd_credits; /* # concurrent sends */
118 int *ksnd_peercredits; /* # concurrent sends to 1 peer */
119 int *ksnd_peertimeout; /* seconds to consider peer dead */
120 int *ksnd_enable_csum; /* enable check sum */
121 int *ksnd_inject_csum_error; /* set non-zero to inject checksum error */
122 unsigned int *ksnd_zc_min_payload; /* minimum zero copy payload size */
123 int *ksnd_zc_recv; /* enable ZC receive (for Chelsio TOE) */
124 int *ksnd_zc_recv_min_nfrags; /* minimum # of fragments to enable ZC receive */
126 int *ksnd_irq_affinity; /* enable IRQ affinity? */
128 #ifdef SOCKNAL_BACKOFF
129 int *ksnd_backoff_init; /* initial TCP backoff */
130 int *ksnd_backoff_max; /* maximum TCP backoff */
132 #if SOCKNAL_VERSION_DEBUG
133 int *ksnd_protocol; /* protocol version */
135 #if defined(CONFIG_SYSCTL) && !CFS_SYSFS_MODULE_PARM
136 cfs_sysctl_table_header_t *ksnd_sysctl; /* sysctl interface */
142 __u64 ksnn_incarnation; /* my epoch */
143 cfs_spinlock_t ksnn_lock; /* serialise */
144 int ksnn_npeers; /* # peers */
145 int ksnn_shutdown; /* shutting down? */
146 int ksnn_ninterfaces; /* IP interfaces */
147 ksock_interface_t ksnn_interfaces[LNET_MAX_INTERFACES];
152 int ksnd_init; /* initialisation state */
153 int ksnd_nnets; /* # networks set up */
155 cfs_rwlock_t ksnd_global_lock; /* stabilize peer/conn ops */
156 struct list_head *ksnd_peers; /* hash table of all my known peers */
157 int ksnd_peer_hash_size; /* size of ksnd_peers */
159 int ksnd_nthreads; /* # live threads */
160 int ksnd_shuttingdown; /* tell threads to exit */
161 int ksnd_nschedulers; /* # schedulers */
162 ksock_sched_t *ksnd_schedulers; /* their state */
164 cfs_atomic_t ksnd_nactive_txs; /* #active txs */
166 struct list_head ksnd_deathrow_conns; /* conns to close: reaper_lock*/
167 struct list_head ksnd_zombie_conns; /* conns to free: reaper_lock */
168 struct list_head ksnd_enomem_conns; /* conns to retry: reaper_lock*/
169 cfs_waitq_t ksnd_reaper_waitq; /* reaper sleeps here */
170 cfs_time_t ksnd_reaper_waketime; /* when reaper will wake */
171 cfs_spinlock_t ksnd_reaper_lock; /* serialise */
173 int ksnd_enomem_tx; /* test ENOMEM sender */
174 int ksnd_stall_tx; /* test sluggish sender */
175 int ksnd_stall_rx; /* test sluggish receiver */
177 struct list_head ksnd_connd_connreqs; /* incoming connection requests */
178 struct list_head ksnd_connd_routes; /* routes waiting to be connected */
179 cfs_waitq_t ksnd_connd_waitq; /* connds sleep here */
180 int ksnd_connd_connecting;/* # connds connecting */
181 cfs_spinlock_t ksnd_connd_lock; /* serialise */
183 struct list_head ksnd_idle_noop_txs; /* list head for freed noop tx */
184 cfs_spinlock_t ksnd_tx_lock; /* serialise, NOT safe in g_lock */
186 ksock_irqinfo_t ksnd_irqinfo[NR_IRQS];/* irq->scheduler lookup */
190 #define SOCKNAL_INIT_NOTHING 0
191 #define SOCKNAL_INIT_DATA 1
192 #define SOCKNAL_INIT_ALL 2
194 /* A packet just assembled for transmission is represented by 1 or more
195 * struct iovec fragments (the first frag contains the portals header),
196 * followed by 0 or more lnet_kiov_t fragments.
198 * On the receive side, initially 1 struct iovec fragment is posted for
199 * receive (the header). Once the header has been received, the payload is
200 * received into either struct iovec or lnet_kiov_t fragments, depending on
201 * what the header matched or whether the message needs forwarding. */
203 struct ksock_conn; /* forward ref */
204 struct ksock_peer; /* forward ref */
205 struct ksock_route; /* forward ref */
206 struct ksock_proto; /* forward ref */
208 typedef struct /* transmit packet */
210 struct list_head tx_list; /* queue on conn for transmission etc */
211 struct list_head tx_zc_list; /* queue on peer for ZC request */
212 cfs_atomic_t tx_refcount; /* tx reference count */
213 int tx_nob; /* # packet bytes */
214 int tx_resid; /* residual bytes */
215 int tx_niov; /* # packet iovec frags */
216 struct iovec *tx_iov; /* packet iovec frags */
217 int tx_nkiov; /* # packet page frags */
218 unsigned int tx_zc_capable:1; /* payload is large enough for ZC */
219 unsigned int tx_zc_checked:1; /* Have I checked if I should ZC? */
220 unsigned int tx_nonblk:1; /* it's a non-blocking ACK */
221 lnet_kiov_t *tx_kiov; /* packet page frags */
222 struct ksock_conn *tx_conn; /* owning conn */
223 lnet_msg_t *tx_lnetmsg; /* lnet message for lnet_finalize() */
224 cfs_time_t tx_deadline; /* when (in jiffies) tx times out */
225 ksock_msg_t tx_msg; /* socklnd message buffer */
226 int tx_desc_size; /* size of this descriptor */
229 struct iovec iov; /* virt hdr */
230 lnet_kiov_t kiov[0]; /* paged payload */
233 struct iovec iov[1]; /* virt hdr + payload */
238 #define KSOCK_NOOP_TX_SIZE ((int)offsetof(ksock_tx_t, tx_frags.paged.kiov[0]))
240 /* network zero copy callback descriptor embedded in ksock_tx_t */
242 /* space for the rx frag descriptors; we either read a single contiguous
243 * header, or up to LNET_MAX_IOV frags of payload of either type. */
245 struct iovec iov[LNET_MAX_IOV];
246 lnet_kiov_t kiov[LNET_MAX_IOV];
247 } ksock_rxiovspace_t;
249 #define SOCKNAL_RX_KSM_HEADER 1 /* reading ksock message header */
250 #define SOCKNAL_RX_LNET_HEADER 2 /* reading lnet message header */
251 #define SOCKNAL_RX_PARSE 3 /* Calling lnet_parse() */
252 #define SOCKNAL_RX_PARSE_WAIT 4 /* waiting to be told to read the body */
253 #define SOCKNAL_RX_LNET_PAYLOAD 5 /* reading lnet payload (to deliver here) */
254 #define SOCKNAL_RX_SLOP 6 /* skipping body */
256 typedef struct ksock_conn
258 struct ksock_peer *ksnc_peer; /* owning peer */
259 struct ksock_route *ksnc_route; /* owning route */
260 struct list_head ksnc_list; /* stash on peer's conn list */
261 cfs_socket_t *ksnc_sock; /* actual socket */
262 void *ksnc_saved_data_ready; /* socket's original data_ready() callback */
263 void *ksnc_saved_write_space; /* socket's original write_space() callback */
264 cfs_atomic_t ksnc_conn_refcount; /* conn refcount */
265 cfs_atomic_t ksnc_sock_refcount; /* sock refcount */
266 ksock_sched_t *ksnc_scheduler; /* who schedules this connection */
267 __u32 ksnc_myipaddr; /* my IP */
268 __u32 ksnc_ipaddr; /* peer's IP */
269 int ksnc_port; /* peer's port */
270 int ksnc_type:3; /* type of connection, should be signed value */
271 int ksnc_closing:1; /* being shut down */
272 int ksnc_flip:1; /* flip or not, only for V2.x */
273 int ksnc_zc_capable:1; /* enable to ZC */
274 struct ksock_proto *ksnc_proto; /* protocol for the connection */
277 struct list_head ksnc_rx_list; /* where I enq waiting input or a forwarding descriptor */
278 cfs_time_t ksnc_rx_deadline; /* when (in jiffies) receive times out */
279 __u8 ksnc_rx_started; /* started receiving a message */
280 __u8 ksnc_rx_ready; /* data ready to read */
281 __u8 ksnc_rx_scheduled; /* being progressed */
282 __u8 ksnc_rx_state; /* what is being read */
283 int ksnc_rx_nob_left; /* # bytes to next hdr/body */
284 int ksnc_rx_nob_wanted; /* bytes actually wanted */
285 int ksnc_rx_niov; /* # iovec frags */
286 struct iovec *ksnc_rx_iov; /* the iovec frags */
287 int ksnc_rx_nkiov; /* # page frags */
288 lnet_kiov_t *ksnc_rx_kiov; /* the page frags */
289 ksock_rxiovspace_t ksnc_rx_iov_space; /* space for frag descriptors */
290 __u32 ksnc_rx_csum; /* partial checksum for incoming data */
291 void *ksnc_cookie; /* rx lnet_finalize passthru arg */
292 ksock_msg_t ksnc_msg; /* incoming message buffer:
293 * V2.x message takes the whole struct
294 * V1.x message is a bare lnet_hdr_t, it's stored
295 * in ksnc_msg.ksm_u.lnetmsg */
298 struct list_head ksnc_tx_list; /* where I enq waiting for output space */
299 struct list_head ksnc_tx_queue; /* packets waiting to be sent */
300 ksock_tx_t *ksnc_tx_carrier; /* next TX that can carry a LNet message or ZC-ACK */
301 cfs_time_t ksnc_tx_deadline; /* when (in jiffies) tx times out */
302 int ksnc_tx_bufnob; /* send buffer marker */
303 cfs_atomic_t ksnc_tx_nob; /* # bytes queued */
304 int ksnc_tx_ready; /* write space */
305 int ksnc_tx_scheduled; /* being progressed */
306 cfs_time_t ksnc_tx_last_post; /* time stamp of the last posted TX */
309 typedef struct ksock_route
311 struct list_head ksnr_list; /* chain on peer route list */
312 struct list_head ksnr_connd_list; /* chain on ksnr_connd_routes */
313 struct ksock_peer *ksnr_peer; /* owning peer */
314 cfs_atomic_t ksnr_refcount; /* # users */
315 cfs_time_t ksnr_timeout; /* when (in jiffies) reconnection can happen next */
316 cfs_duration_t ksnr_retry_interval; /* how long between retries */
317 __u32 ksnr_myipaddr; /* my IP */
318 __u32 ksnr_ipaddr; /* IP address to connect to */
319 int ksnr_port; /* port to connect to */
320 unsigned int ksnr_scheduled:1; /* scheduled for attention */
321 unsigned int ksnr_connecting:1; /* connection establishment in progress */
322 unsigned int ksnr_connected:4; /* connections established by type */
323 unsigned int ksnr_deleted:1; /* been removed from peer? */
324 unsigned int ksnr_share_count; /* created explicitly? */
325 int ksnr_conn_count; /* # conns established by this route */
328 #define SOCKNAL_KEEPALIVE_PING 1 /* cookie for keepalive ping */
330 typedef struct ksock_peer
332 struct list_head ksnp_list; /* stash on global peer list */
333 cfs_time_t ksnp_last_alive; /* when (in jiffies) I was last alive */
334 lnet_process_id_t ksnp_id; /* who's on the other end(s) */
335 cfs_atomic_t ksnp_refcount; /* # users */
336 int ksnp_sharecount; /* lconf usage counter */
337 int ksnp_closing; /* being closed */
338 int ksnp_accepting; /* # passive connections pending */
339 int ksnp_error; /* errno on closing last conn */
340 __u64 ksnp_zc_next_cookie;/* ZC completion cookie */
341 __u64 ksnp_incarnation; /* latest known peer incarnation */
342 struct ksock_proto *ksnp_proto; /* latest known peer protocol */
343 struct list_head ksnp_conns; /* all active connections */
344 struct list_head ksnp_routes; /* routes */
345 struct list_head ksnp_tx_queue; /* waiting packets */
346 cfs_spinlock_t ksnp_lock; /* serialize, NOT safe in g_lock */
347 struct list_head ksnp_zc_req_list; /* zero copy requests wait for ACK */
348 cfs_time_t ksnp_send_keepalive; /* time to send keepalive */
349 lnet_ni_t *ksnp_ni; /* which network */
350 int ksnp_n_passive_ips; /* # of... */
351 __u32 ksnp_passive_ips[LNET_MAX_INTERFACES]; /* preferred local interfaces */
354 typedef struct ksock_connreq
356 struct list_head ksncr_list; /* stash on ksnd_connd_connreqs */
357 lnet_ni_t *ksncr_ni; /* chosen NI */
358 cfs_socket_t *ksncr_sock; /* accepted socket */
361 extern ksock_nal_data_t ksocknal_data;
362 extern ksock_tunables_t ksocknal_tunables;
364 #define SOCKNAL_MATCH_NO 0 /* TX can't match type of connection */
365 #define SOCKNAL_MATCH_YES 1 /* TX matches type of connection */
366 #define SOCKNAL_MATCH_MAY 2 /* TX can be sent on the connection, but not preferred */
368 typedef struct ksock_proto
370 int pro_version; /* version number of protocol */
371 int (*pro_send_hello)(ksock_conn_t *, ksock_hello_msg_t *); /* handshake function */
372 int (*pro_recv_hello)(ksock_conn_t *, ksock_hello_msg_t *, int);/* handshake function */
373 void (*pro_pack)(ksock_tx_t *); /* message pack */
374 void (*pro_unpack)(ksock_msg_t *); /* message unpack */
375 ksock_tx_t *(*pro_queue_tx_msg)(ksock_conn_t *, ksock_tx_t *); /* queue tx on the connection */
376 int (*pro_queue_tx_zcack)(ksock_conn_t *, ksock_tx_t *, __u64); /* queue ZC ack on the connection */
377 int (*pro_handle_zcreq)(ksock_conn_t *, __u64, int); /* handle ZC request */
378 int (*pro_handle_zcack)(ksock_conn_t *, __u64, __u64); /* handle ZC ACK */
379 int (*pro_match_tx)(ksock_conn_t *, ksock_tx_t *, int); /* msg type matches the connection type:
381 * return MATCH_NO : no
382 * return MATCH_YES : matching type
383 * return MATCH_MAY : can be backup */
386 extern ksock_proto_t ksocknal_protocol_v1x;
387 extern ksock_proto_t ksocknal_protocol_v2x;
388 extern ksock_proto_t ksocknal_protocol_v3x;
390 #define KSOCK_PROTO_V1_MAJOR LNET_PROTO_TCP_VERSION_MAJOR
391 #define KSOCK_PROTO_V1_MINOR LNET_PROTO_TCP_VERSION_MINOR
392 #define KSOCK_PROTO_V1 KSOCK_PROTO_V1_MAJOR
394 #ifndef CPU_MASK_NONE
395 #define CPU_MASK_NONE 0UL
399 ksocknal_route_mask(void)
401 if (!*ksocknal_tunables.ksnd_typed_conns)
402 return (1 << SOCKLND_CONN_ANY);
404 return ((1 << SOCKLND_CONN_CONTROL) |
405 (1 << SOCKLND_CONN_BULK_IN) |
406 (1 << SOCKLND_CONN_BULK_OUT));
409 static inline struct list_head *
410 ksocknal_nid2peerlist (lnet_nid_t nid)
412 unsigned int hash = ((unsigned int)nid) % ksocknal_data.ksnd_peer_hash_size;
414 return (&ksocknal_data.ksnd_peers [hash]);
418 ksocknal_conn_addref (ksock_conn_t *conn)
420 LASSERT (cfs_atomic_read(&conn->ksnc_conn_refcount) > 0);
421 cfs_atomic_inc(&conn->ksnc_conn_refcount);
424 extern void ksocknal_queue_zombie_conn (ksock_conn_t *conn);
425 extern void ksocknal_finalize_zcreq(ksock_conn_t *conn);
428 ksocknal_conn_decref (ksock_conn_t *conn)
430 LASSERT (cfs_atomic_read(&conn->ksnc_conn_refcount) > 0);
431 if (cfs_atomic_dec_and_test(&conn->ksnc_conn_refcount))
432 ksocknal_queue_zombie_conn(conn);
436 ksocknal_connsock_addref (ksock_conn_t *conn)
440 cfs_read_lock (&ksocknal_data.ksnd_global_lock);
441 if (!conn->ksnc_closing) {
442 LASSERT (cfs_atomic_read(&conn->ksnc_sock_refcount) > 0);
443 cfs_atomic_inc(&conn->ksnc_sock_refcount);
446 cfs_read_unlock (&ksocknal_data.ksnd_global_lock);
452 ksocknal_connsock_decref (ksock_conn_t *conn)
454 LASSERT (cfs_atomic_read(&conn->ksnc_sock_refcount) > 0);
455 if (cfs_atomic_dec_and_test(&conn->ksnc_sock_refcount)) {
456 LASSERT (conn->ksnc_closing);
457 libcfs_sock_release(conn->ksnc_sock);
458 conn->ksnc_sock = NULL;
459 ksocknal_finalize_zcreq(conn);
464 ksocknal_tx_addref (ksock_tx_t *tx)
466 LASSERT (cfs_atomic_read(&tx->tx_refcount) > 0);
467 cfs_atomic_inc(&tx->tx_refcount);
470 extern void ksocknal_tx_prep (ksock_conn_t *, ksock_tx_t *tx);
471 extern void ksocknal_tx_done (lnet_ni_t *ni, ksock_tx_t *tx);
474 ksocknal_tx_decref (ksock_tx_t *tx)
476 LASSERT (cfs_atomic_read(&tx->tx_refcount) > 0);
477 if (cfs_atomic_dec_and_test(&tx->tx_refcount))
478 ksocknal_tx_done(NULL, tx);
482 ksocknal_route_addref (ksock_route_t *route)
484 LASSERT (cfs_atomic_read(&route->ksnr_refcount) > 0);
485 cfs_atomic_inc(&route->ksnr_refcount);
488 extern void ksocknal_destroy_route (ksock_route_t *route);
491 ksocknal_route_decref (ksock_route_t *route)
493 LASSERT (cfs_atomic_read (&route->ksnr_refcount) > 0);
494 if (cfs_atomic_dec_and_test(&route->ksnr_refcount))
495 ksocknal_destroy_route (route);
499 ksocknal_peer_addref (ksock_peer_t *peer)
501 LASSERT (cfs_atomic_read (&peer->ksnp_refcount) > 0);
502 cfs_atomic_inc(&peer->ksnp_refcount);
505 extern void ksocknal_destroy_peer (ksock_peer_t *peer);
508 ksocknal_peer_decref (ksock_peer_t *peer)
510 LASSERT (cfs_atomic_read (&peer->ksnp_refcount) > 0);
511 if (cfs_atomic_dec_and_test(&peer->ksnp_refcount))
512 ksocknal_destroy_peer (peer);
515 int ksocknal_startup (lnet_ni_t *ni);
516 void ksocknal_shutdown (lnet_ni_t *ni);
517 int ksocknal_ctl(lnet_ni_t *ni, unsigned int cmd, void *arg);
518 int ksocknal_send (lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg);
519 int ksocknal_recv(lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg,
520 int delayed, unsigned int niov,
521 struct iovec *iov, lnet_kiov_t *kiov,
522 unsigned int offset, unsigned int mlen, unsigned int rlen);
523 int ksocknal_accept(lnet_ni_t *ni, cfs_socket_t *sock);
525 extern int ksocknal_add_peer(lnet_ni_t *ni, lnet_process_id_t id, __u32 ip, int port);
526 extern ksock_peer_t *ksocknal_find_peer_locked (lnet_ni_t *ni, lnet_process_id_t id);
527 extern ksock_peer_t *ksocknal_find_peer (lnet_ni_t *ni, lnet_process_id_t id);
528 extern void ksocknal_peer_failed (ksock_peer_t *peer);
529 extern int ksocknal_create_conn (lnet_ni_t *ni, ksock_route_t *route,
530 cfs_socket_t *sock, int type);
531 extern void ksocknal_close_conn_locked (ksock_conn_t *conn, int why);
532 extern void ksocknal_terminate_conn (ksock_conn_t *conn);
533 extern void ksocknal_destroy_conn (ksock_conn_t *conn);
534 extern int ksocknal_close_peer_conns_locked (ksock_peer_t *peer,
535 __u32 ipaddr, int why);
536 extern int ksocknal_close_conn_and_siblings (ksock_conn_t *conn, int why);
537 extern int ksocknal_close_matching_conns (lnet_process_id_t id, __u32 ipaddr);
538 extern ksock_conn_t *ksocknal_find_conn_locked(ksock_peer_t *peer,
539 ksock_tx_t *tx, int nonblk);
541 extern int ksocknal_launch_packet(lnet_ni_t *ni, ksock_tx_t *tx,
542 lnet_process_id_t id);
543 extern ksock_tx_t *ksocknal_alloc_tx(int type, int size);
544 extern void ksocknal_free_tx (ksock_tx_t *tx);
545 extern ksock_tx_t *ksocknal_alloc_tx_noop(__u64 cookie, int nonblk);
546 extern void ksocknal_next_tx_carrier(ksock_conn_t *conn);
547 extern void ksocknal_queue_tx_locked (ksock_tx_t *tx, ksock_conn_t *conn);
548 extern void ksocknal_txlist_done (lnet_ni_t *ni, struct list_head *txlist, int error);
549 extern void ksocknal_notify (lnet_ni_t *ni, lnet_nid_t gw_nid, int alive);
550 extern void ksocknal_query (struct lnet_ni *ni, lnet_nid_t nid, time_t *when);
551 extern int ksocknal_thread_start (int (*fn)(void *arg), void *arg);
552 extern void ksocknal_thread_fini (void);
553 extern void ksocknal_launch_all_connections_locked (ksock_peer_t *peer);
554 extern ksock_route_t *ksocknal_find_connectable_route_locked (ksock_peer_t *peer);
555 extern ksock_route_t *ksocknal_find_connecting_route_locked (ksock_peer_t *peer);
556 extern int ksocknal_new_packet (ksock_conn_t *conn, int skip);
557 extern int ksocknal_scheduler (void *arg);
558 extern int ksocknal_connd (void *arg);
559 extern int ksocknal_reaper (void *arg);
560 extern int ksocknal_send_hello (lnet_ni_t *ni, ksock_conn_t *conn,
561 lnet_nid_t peer_nid, ksock_hello_msg_t *hello);
562 extern int ksocknal_recv_hello (lnet_ni_t *ni, ksock_conn_t *conn,
563 ksock_hello_msg_t *hello, lnet_process_id_t *id,
565 extern void ksocknal_read_callback(ksock_conn_t *conn);
566 extern void ksocknal_write_callback(ksock_conn_t *conn);
568 extern int ksocknal_lib_zc_capable(ksock_conn_t *conn);
569 extern void ksocknal_lib_save_callback(cfs_socket_t *sock, ksock_conn_t *conn);
570 extern void ksocknal_lib_set_callback(cfs_socket_t *sock, ksock_conn_t *conn);
571 extern void ksocknal_lib_reset_callback(cfs_socket_t *sock, ksock_conn_t *conn);
572 extern void ksocknal_lib_push_conn (ksock_conn_t *conn);
573 extern void ksocknal_lib_bind_irq (unsigned int irq);
574 extern int ksocknal_lib_get_conn_addrs (ksock_conn_t *conn);
575 extern unsigned int ksocknal_lib_sock_irq (cfs_socket_t *sock);
576 extern int ksocknal_lib_setup_sock (cfs_socket_t *so);
577 extern int ksocknal_lib_send_iov (ksock_conn_t *conn, ksock_tx_t *tx);
578 extern int ksocknal_lib_send_kiov (ksock_conn_t *conn, ksock_tx_t *tx);
579 extern void ksocknal_lib_eager_ack (ksock_conn_t *conn);
580 extern int ksocknal_lib_recv_iov (ksock_conn_t *conn);
581 extern int ksocknal_lib_recv_kiov (ksock_conn_t *conn);
582 extern int ksocknal_lib_get_conn_tunables (ksock_conn_t *conn, int *txmem,
583 int *rxmem, int *nagle);
585 extern int ksocknal_tunables_init(void);
586 extern void ksocknal_tunables_fini(void);
587 extern int ksocknal_lib_tunables_init(void);
588 extern void ksocknal_lib_tunables_fini(void);
590 extern void ksocknal_lib_csum_tx(ksock_tx_t *tx);
592 extern int ksocknal_lib_memory_pressure(ksock_conn_t *conn);
593 extern int ksocknal_lib_bind_thread_to_cpu(int id);