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.
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
29 #define DEBUG_SUBSYSTEM S_LND
31 #include "socklnd_lib-linux.h"
33 #include <linux/libcfs/libcfs.h>
34 #include <linux/lnet/lnet.h>
35 #include <linux/lnet/lib-lnet.h>
36 #include <linux/lnet/socklnd.h>
37 #include <linux/lnet/lnet-sysctl.h>
39 #define SOCKNAL_PEER_HASH_SIZE 101 /* # peer lists */
40 #define SOCKNAL_RESCHED 100 /* # scheduler loops before reschedule */
41 #define SOCKNAL_INSANITY_RECONN 5000 /* connd is trying on reconn infinitely */
42 #define SOCKNAL_ENOMEM_RETRY CFS_TICK /* jiffies between retries */
44 #define SOCKNAL_SINGLE_FRAG_TX 0 /* disable multi-fragment sends */
45 #define SOCKNAL_SINGLE_FRAG_RX 0 /* disable multi-fragment receives */
47 #define SOCKNAL_VERSION_DEBUG 0 /* enable protocol version debugging */
49 /* risk kmap deadlock on multi-frag I/O (backs off to single-frag if disabled).
50 * no risk if we're not running on a CONFIG_HIGHMEM platform. */
52 # define SOCKNAL_RISK_KMAP_DEADLOCK 0
54 # define SOCKNAL_RISK_KMAP_DEADLOCK 1
57 struct ksock_sched_info
;
59 typedef struct /* per scheduler state */
61 spinlock_t kss_lock
; /* serialise */
62 struct list_head kss_rx_conns
; /* conn waiting to be read */
63 /* conn waiting to be written */
64 struct list_head kss_tx_conns
;
65 /* zombie noop tx list */
66 struct list_head kss_zombie_noop_txs
;
67 wait_queue_head_t kss_waitq
; /* where scheduler sleeps */
68 /* # connections assigned to this scheduler */
70 struct ksock_sched_info
*kss_info
; /* owner of it */
71 struct page
*kss_rx_scratch_pgs
[LNET_MAX_IOV
];
72 struct iovec kss_scratch_iov
[LNET_MAX_IOV
];
75 struct ksock_sched_info
{
76 int ksi_nthreads_max
; /* max allowed threads */
77 int ksi_nthreads
; /* number of threads */
78 int ksi_cpt
; /* CPT id */
79 ksock_sched_t
*ksi_scheds
; /* array of schedulers */
82 #define KSOCK_CPT_SHIFT 16
83 #define KSOCK_THREAD_ID(cpt, sid) (((cpt) << KSOCK_CPT_SHIFT) | (sid))
84 #define KSOCK_THREAD_CPT(id) ((id) >> KSOCK_CPT_SHIFT)
85 #define KSOCK_THREAD_SID(id) ((id) & ((1UL << KSOCK_CPT_SHIFT) - 1))
87 typedef struct /* in-use interface */
89 __u32 ksni_ipaddr
; /* interface's IP address */
90 __u32 ksni_netmask
; /* interface's network mask */
91 int ksni_nroutes
; /* # routes using (active) */
92 int ksni_npeers
; /* # peers using (passive) */
93 char ksni_name
[IFNAMSIZ
]; /* interface name */
98 /* "stuck" socket timeout (seconds) */
100 /* # scheduler threads in each pool while starting */
102 int *ksnd_nconnds
; /* # connection daemons */
103 int *ksnd_nconnds_max
; /* max # 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_peertxcredits
; /* # concurrent sends to 1 peer */
119 int *ksnd_peerrtrcredits
; /* # per-peer router buffer credits */
120 int *ksnd_peertimeout
; /* seconds to consider peer dead */
121 int *ksnd_enable_csum
; /* enable check sum */
122 int *ksnd_inject_csum_error
; /* set non-zero to inject checksum error */
123 int *ksnd_nonblk_zcack
; /* always send zc-ack on non-blocking connection */
124 unsigned int *ksnd_zc_min_payload
; /* minimum zero copy payload size */
125 int *ksnd_zc_recv
; /* enable ZC receive (for Chelsio TOE) */
126 int *ksnd_zc_recv_min_nfrags
; /* minimum # of fragments to enable ZC receive */
131 __u64 ksnn_incarnation
; /* my epoch */
132 spinlock_t ksnn_lock
; /* serialise */
133 struct list_head ksnn_list
; /* chain on global list */
134 int ksnn_npeers
; /* # peers */
135 int ksnn_shutdown
; /* shutting down? */
136 int ksnn_ninterfaces
; /* IP interfaces */
137 ksock_interface_t ksnn_interfaces
[LNET_MAX_INTERFACES
];
141 #define SOCKNAL_CONND_TIMEOUT 120
142 /** reserved thread for accepting & creating new connd */
143 #define SOCKNAL_CONND_RESV 1
147 int ksnd_init
; /* initialisation state */
148 int ksnd_nnets
; /* # networks set up */
149 struct list_head ksnd_nets
; /* list of nets */
150 /* stabilize peer/conn ops */
151 rwlock_t ksnd_global_lock
;
152 /* hash table of all my known peers */
153 struct list_head
*ksnd_peers
;
154 int ksnd_peer_hash_size
; /* size of ksnd_peers */
156 int ksnd_nthreads
; /* # live threads */
157 int ksnd_shuttingdown
; /* tell threads to exit */
158 /* schedulers information */
159 struct ksock_sched_info
**ksnd_sched_info
;
161 atomic_t ksnd_nactive_txs
; /* #active txs */
163 struct list_head ksnd_deathrow_conns
; /* conns to close: reaper_lock*/
164 struct list_head ksnd_zombie_conns
; /* conns to free: reaper_lock */
165 struct list_head ksnd_enomem_conns
; /* conns to retry: reaper_lock*/
166 wait_queue_head_t ksnd_reaper_waitq
; /* reaper sleeps here */
167 cfs_time_t ksnd_reaper_waketime
;/* when reaper will wake */
168 spinlock_t ksnd_reaper_lock
; /* serialise */
170 int ksnd_enomem_tx
; /* test ENOMEM sender */
171 int ksnd_stall_tx
; /* test sluggish sender */
172 int ksnd_stall_rx
; /* test sluggish receiver */
174 struct list_head ksnd_connd_connreqs
; /* incoming connection requests */
175 struct list_head ksnd_connd_routes
; /* routes waiting to be connected */
176 wait_queue_head_t ksnd_connd_waitq
; /* connds sleep here */
177 int ksnd_connd_connecting
;/* # connds connecting */
178 /** time stamp of the last failed connecting attempt */
179 long ksnd_connd_failed_stamp
;
180 /** # starting connd */
181 unsigned ksnd_connd_starting
;
182 /** time stamp of the last starting connd */
183 long ksnd_connd_starting_stamp
;
184 /** # running connd */
185 unsigned ksnd_connd_running
;
186 spinlock_t ksnd_connd_lock
; /* serialise */
188 struct list_head ksnd_idle_noop_txs
; /* list head for freed noop tx */
189 spinlock_t ksnd_tx_lock
; /* serialise, g_lock unsafe */
193 #define SOCKNAL_INIT_NOTHING 0
194 #define SOCKNAL_INIT_DATA 1
195 #define SOCKNAL_INIT_ALL 2
197 /* A packet just assembled for transmission is represented by 1 or more
198 * struct iovec fragments (the first frag contains the portals header),
199 * followed by 0 or more lnet_kiov_t fragments.
201 * On the receive side, initially 1 struct iovec fragment is posted for
202 * receive (the header). Once the header has been received, the payload is
203 * received into either struct iovec or lnet_kiov_t fragments, depending on
204 * what the header matched or whether the message needs forwarding. */
206 struct ksock_conn
; /* forward ref */
207 struct ksock_peer
; /* forward ref */
208 struct ksock_route
; /* forward ref */
209 struct ksock_proto
; /* forward ref */
211 typedef struct /* transmit packet */
213 struct list_head tx_list
; /* queue on conn for transmission etc */
214 struct list_head tx_zc_list
; /* queue on peer for ZC request */
215 atomic_t tx_refcount
; /* tx reference count */
216 int tx_nob
; /* # packet bytes */
217 int tx_resid
; /* residual bytes */
218 int tx_niov
; /* # packet iovec frags */
219 struct iovec
*tx_iov
; /* packet iovec frags */
220 int tx_nkiov
; /* # packet page frags */
221 unsigned short tx_zc_aborted
; /* aborted ZC request */
222 unsigned short tx_zc_capable
:1; /* payload is large enough for ZC */
223 unsigned short tx_zc_checked
:1; /* Have I checked if I should ZC? */
224 unsigned short tx_nonblk
:1; /* it's a non-blocking ACK */
225 lnet_kiov_t
*tx_kiov
; /* packet page frags */
226 struct ksock_conn
*tx_conn
; /* owning conn */
227 lnet_msg_t
*tx_lnetmsg
; /* lnet message for lnet_finalize() */
228 cfs_time_t tx_deadline
; /* when (in jiffies) tx times out */
229 ksock_msg_t tx_msg
; /* socklnd message buffer */
230 int tx_desc_size
; /* size of this descriptor */
233 struct iovec iov
; /* virt hdr */
234 lnet_kiov_t kiov
[0]; /* paged payload */
237 struct iovec iov
[1]; /* virt hdr + payload */
242 #define KSOCK_NOOP_TX_SIZE ((int)offsetof(ksock_tx_t, tx_frags.paged.kiov[0]))
244 /* network zero copy callback descriptor embedded in ksock_tx_t */
246 /* space for the rx frag descriptors; we either read a single contiguous
247 * header, or up to LNET_MAX_IOV frags of payload of either type. */
249 struct iovec iov
[LNET_MAX_IOV
];
250 lnet_kiov_t kiov
[LNET_MAX_IOV
];
251 } ksock_rxiovspace_t
;
253 #define SOCKNAL_RX_KSM_HEADER 1 /* reading ksock message header */
254 #define SOCKNAL_RX_LNET_HEADER 2 /* reading lnet message header */
255 #define SOCKNAL_RX_PARSE 3 /* Calling lnet_parse() */
256 #define SOCKNAL_RX_PARSE_WAIT 4 /* waiting to be told to read the body */
257 #define SOCKNAL_RX_LNET_PAYLOAD 5 /* reading lnet payload (to deliver here) */
258 #define SOCKNAL_RX_SLOP 6 /* skipping body */
260 typedef struct ksock_conn
262 struct ksock_peer
*ksnc_peer
; /* owning peer */
263 struct ksock_route
*ksnc_route
; /* owning route */
264 struct list_head ksnc_list
; /* stash on peer's conn list */
265 socket_t
*ksnc_sock
; /* actual socket */
266 void *ksnc_saved_data_ready
; /* socket's original data_ready() callback */
267 void *ksnc_saved_write_space
; /* socket's original write_space() callback */
268 atomic_t ksnc_conn_refcount
; /* conn refcount */
269 atomic_t ksnc_sock_refcount
; /* sock refcount */
270 ksock_sched_t
*ksnc_scheduler
; /* who schedules this connection */
271 __u32 ksnc_myipaddr
; /* my IP */
272 __u32 ksnc_ipaddr
; /* peer's IP */
273 int ksnc_port
; /* peer's port */
274 signed int ksnc_type
:3; /* type of connection,
275 * should be signed value */
276 unsigned int ksnc_closing
:1; /* being shut down */
277 unsigned int ksnc_flip
:1; /* flip or not, only for V2.x */
278 unsigned int ksnc_zc_capable
:1; /* enable to ZC */
279 struct ksock_proto
*ksnc_proto
; /* protocol for the connection */
282 struct list_head ksnc_rx_list
; /* where I enq waiting input or a forwarding descriptor */
283 cfs_time_t ksnc_rx_deadline
; /* when (in jiffies) receive times out */
284 __u8 ksnc_rx_started
; /* started receiving a message */
285 __u8 ksnc_rx_ready
; /* data ready to read */
286 __u8 ksnc_rx_scheduled
;/* being progressed */
287 __u8 ksnc_rx_state
; /* what is being read */
288 int ksnc_rx_nob_left
; /* # bytes to next hdr/body */
289 int ksnc_rx_nob_wanted
; /* bytes actually wanted */
290 int ksnc_rx_niov
; /* # iovec frags */
291 struct iovec
*ksnc_rx_iov
; /* the iovec frags */
292 int ksnc_rx_nkiov
; /* # page frags */
293 lnet_kiov_t
*ksnc_rx_kiov
; /* the page frags */
294 ksock_rxiovspace_t ksnc_rx_iov_space
;/* space for frag descriptors */
295 __u32 ksnc_rx_csum
; /* partial checksum for incoming data */
296 void *ksnc_cookie
; /* rx lnet_finalize passthru arg */
297 ksock_msg_t ksnc_msg
; /* incoming message buffer:
298 * V2.x message takes the
300 * V1.x message is a bare
301 * lnet_hdr_t, it's stored in
302 * ksnc_msg.ksm_u.lnetmsg */
305 struct list_head ksnc_tx_list
; /* where I enq waiting for output space */
306 struct list_head ksnc_tx_queue
; /* packets waiting to be sent */
307 ksock_tx_t
*ksnc_tx_carrier
; /* next TX that can carry a LNet message or ZC-ACK */
308 cfs_time_t ksnc_tx_deadline
; /* when (in jiffies) tx times out */
309 int ksnc_tx_bufnob
; /* send buffer marker */
310 atomic_t ksnc_tx_nob
; /* # bytes queued */
311 int ksnc_tx_ready
; /* write space */
312 int ksnc_tx_scheduled
; /* being progressed */
313 cfs_time_t ksnc_tx_last_post
; /* time stamp of the last posted TX */
316 typedef struct ksock_route
318 struct list_head ksnr_list
; /* chain on peer route list */
319 struct list_head ksnr_connd_list
; /* chain on ksnr_connd_routes */
320 struct ksock_peer
*ksnr_peer
; /* owning peer */
321 atomic_t ksnr_refcount
; /* # users */
322 cfs_time_t ksnr_timeout
; /* when (in jiffies) reconnection can happen next */
323 cfs_duration_t ksnr_retry_interval
; /* how long between retries */
324 __u32 ksnr_myipaddr
; /* my IP */
325 __u32 ksnr_ipaddr
; /* IP address to connect to */
326 int ksnr_port
; /* port to connect to */
327 unsigned int ksnr_scheduled
:1; /* scheduled for attention */
328 unsigned int ksnr_connecting
:1;/* connection establishment in progress */
329 unsigned int ksnr_connected
:4; /* connections established by type */
330 unsigned int ksnr_deleted
:1; /* been removed from peer? */
331 unsigned int ksnr_share_count
; /* created explicitly? */
332 int ksnr_conn_count
; /* # conns established by this route */
335 #define SOCKNAL_KEEPALIVE_PING 1 /* cookie for keepalive ping */
337 typedef struct ksock_peer
339 struct list_head ksnp_list
; /* stash on global peer list */
340 cfs_time_t ksnp_last_alive
; /* when (in jiffies) I was last alive */
341 lnet_process_id_t ksnp_id
; /* who's on the other end(s) */
342 atomic_t ksnp_refcount
; /* # users */
343 int ksnp_sharecount
; /* lconf usage counter */
344 int ksnp_closing
; /* being closed */
345 int ksnp_accepting
;/* # passive connections pending */
346 int ksnp_error
; /* errno on closing last conn */
347 __u64 ksnp_zc_next_cookie
;/* ZC completion cookie */
348 __u64 ksnp_incarnation
; /* latest known peer incarnation */
349 struct ksock_proto
*ksnp_proto
; /* latest known peer protocol */
350 struct list_head ksnp_conns
; /* all active connections */
351 struct list_head ksnp_routes
; /* routes */
352 struct list_head ksnp_tx_queue
; /* waiting packets */
353 spinlock_t ksnp_lock
; /* serialize, g_lock unsafe */
354 struct list_head ksnp_zc_req_list
; /* zero copy requests wait for ACK */
355 cfs_time_t ksnp_send_keepalive
; /* time to send keepalive */
356 lnet_ni_t
*ksnp_ni
; /* which network */
357 int ksnp_n_passive_ips
; /* # of... */
358 __u32 ksnp_passive_ips
[LNET_MAX_INTERFACES
]; /* preferred local interfaces */
361 typedef struct ksock_connreq
363 struct list_head ksncr_list
; /* stash on ksnd_connd_connreqs */
364 lnet_ni_t
*ksncr_ni
; /* chosen NI */
365 socket_t
*ksncr_sock
; /* accepted socket */
368 extern ksock_nal_data_t ksocknal_data
;
369 extern ksock_tunables_t ksocknal_tunables
;
371 #define SOCKNAL_MATCH_NO 0 /* TX can't match type of connection */
372 #define SOCKNAL_MATCH_YES 1 /* TX matches type of connection */
373 #define SOCKNAL_MATCH_MAY 2 /* TX can be sent on the connection, but not preferred */
375 typedef struct ksock_proto
377 int pro_version
; /* version number of protocol */
378 int (*pro_send_hello
)(ksock_conn_t
*, ksock_hello_msg_t
*); /* handshake function */
379 int (*pro_recv_hello
)(ksock_conn_t
*, ksock_hello_msg_t
*, int);/* handshake function */
380 void (*pro_pack
)(ksock_tx_t
*); /* message pack */
381 void (*pro_unpack
)(ksock_msg_t
*); /* message unpack */
382 ksock_tx_t
*(*pro_queue_tx_msg
)(ksock_conn_t
*, ksock_tx_t
*); /* queue tx on the connection */
383 int (*pro_queue_tx_zcack
)(ksock_conn_t
*, ksock_tx_t
*, __u64
); /* queue ZC ack on the connection */
384 int (*pro_handle_zcreq
)(ksock_conn_t
*, __u64
, int); /* handle ZC request */
385 int (*pro_handle_zcack
)(ksock_conn_t
*, __u64
, __u64
); /* handle ZC ACK */
386 int (*pro_match_tx
)(ksock_conn_t
*, ksock_tx_t
*, int); /* msg type matches the connection type:
388 * return MATCH_NO : no
389 * return MATCH_YES : matching type
390 * return MATCH_MAY : can be backup */
393 extern ksock_proto_t ksocknal_protocol_v1x
;
394 extern ksock_proto_t ksocknal_protocol_v2x
;
395 extern ksock_proto_t ksocknal_protocol_v3x
;
397 #define KSOCK_PROTO_V1_MAJOR LNET_PROTO_TCP_VERSION_MAJOR
398 #define KSOCK_PROTO_V1_MINOR LNET_PROTO_TCP_VERSION_MINOR
399 #define KSOCK_PROTO_V1 KSOCK_PROTO_V1_MAJOR
401 #ifndef CPU_MASK_NONE
402 #define CPU_MASK_NONE 0UL
406 ksocknal_route_mask(void)
408 if (!*ksocknal_tunables
.ksnd_typed_conns
)
409 return (1 << SOCKLND_CONN_ANY
);
411 return ((1 << SOCKLND_CONN_CONTROL
) |
412 (1 << SOCKLND_CONN_BULK_IN
) |
413 (1 << SOCKLND_CONN_BULK_OUT
));
416 static inline struct list_head
*
417 ksocknal_nid2peerlist (lnet_nid_t nid
)
419 unsigned int hash
= ((unsigned int)nid
) % ksocknal_data
.ksnd_peer_hash_size
;
421 return (&ksocknal_data
.ksnd_peers
[hash
]);
425 ksocknal_conn_addref (ksock_conn_t
*conn
)
427 LASSERT (atomic_read(&conn
->ksnc_conn_refcount
) > 0);
428 atomic_inc(&conn
->ksnc_conn_refcount
);
431 extern void ksocknal_queue_zombie_conn (ksock_conn_t
*conn
);
432 extern void ksocknal_finalize_zcreq(ksock_conn_t
*conn
);
435 ksocknal_conn_decref (ksock_conn_t
*conn
)
437 LASSERT (atomic_read(&conn
->ksnc_conn_refcount
) > 0);
438 if (atomic_dec_and_test(&conn
->ksnc_conn_refcount
))
439 ksocknal_queue_zombie_conn(conn
);
443 ksocknal_connsock_addref (ksock_conn_t
*conn
)
447 read_lock(&ksocknal_data
.ksnd_global_lock
);
448 if (!conn
->ksnc_closing
) {
449 LASSERT(atomic_read(&conn
->ksnc_sock_refcount
) > 0);
450 atomic_inc(&conn
->ksnc_sock_refcount
);
453 read_unlock(&ksocknal_data
.ksnd_global_lock
);
459 ksocknal_connsock_decref (ksock_conn_t
*conn
)
461 LASSERT (atomic_read(&conn
->ksnc_sock_refcount
) > 0);
462 if (atomic_dec_and_test(&conn
->ksnc_sock_refcount
)) {
463 LASSERT (conn
->ksnc_closing
);
464 libcfs_sock_release(conn
->ksnc_sock
);
465 conn
->ksnc_sock
= NULL
;
466 ksocknal_finalize_zcreq(conn
);
471 ksocknal_tx_addref (ksock_tx_t
*tx
)
473 LASSERT (atomic_read(&tx
->tx_refcount
) > 0);
474 atomic_inc(&tx
->tx_refcount
);
477 extern void ksocknal_tx_prep (ksock_conn_t
*, ksock_tx_t
*tx
);
478 extern void ksocknal_tx_done (lnet_ni_t
*ni
, ksock_tx_t
*tx
);
481 ksocknal_tx_decref (ksock_tx_t
*tx
)
483 LASSERT (atomic_read(&tx
->tx_refcount
) > 0);
484 if (atomic_dec_and_test(&tx
->tx_refcount
))
485 ksocknal_tx_done(NULL
, tx
);
489 ksocknal_route_addref (ksock_route_t
*route
)
491 LASSERT (atomic_read(&route
->ksnr_refcount
) > 0);
492 atomic_inc(&route
->ksnr_refcount
);
495 extern void ksocknal_destroy_route (ksock_route_t
*route
);
498 ksocknal_route_decref (ksock_route_t
*route
)
500 LASSERT (atomic_read (&route
->ksnr_refcount
) > 0);
501 if (atomic_dec_and_test(&route
->ksnr_refcount
))
502 ksocknal_destroy_route (route
);
506 ksocknal_peer_addref (ksock_peer_t
*peer
)
508 LASSERT (atomic_read (&peer
->ksnp_refcount
) > 0);
509 atomic_inc(&peer
->ksnp_refcount
);
512 extern void ksocknal_destroy_peer (ksock_peer_t
*peer
);
515 ksocknal_peer_decref (ksock_peer_t
*peer
)
517 LASSERT (atomic_read (&peer
->ksnp_refcount
) > 0);
518 if (atomic_dec_and_test(&peer
->ksnp_refcount
))
519 ksocknal_destroy_peer (peer
);
522 int ksocknal_startup (lnet_ni_t
*ni
);
523 void ksocknal_shutdown (lnet_ni_t
*ni
);
524 int ksocknal_ctl(lnet_ni_t
*ni
, unsigned int cmd
, void *arg
);
525 int ksocknal_send (lnet_ni_t
*ni
, void *private, lnet_msg_t
*lntmsg
);
526 int ksocknal_recv(lnet_ni_t
*ni
, void *private, lnet_msg_t
*lntmsg
,
527 int delayed
, unsigned int niov
,
528 struct iovec
*iov
, lnet_kiov_t
*kiov
,
529 unsigned int offset
, unsigned int mlen
, unsigned int rlen
);
530 int ksocknal_accept(lnet_ni_t
*ni
, socket_t
*sock
);
532 extern int ksocknal_add_peer(lnet_ni_t
*ni
, lnet_process_id_t id
, __u32 ip
, int port
);
533 extern ksock_peer_t
*ksocknal_find_peer_locked (lnet_ni_t
*ni
, lnet_process_id_t id
);
534 extern ksock_peer_t
*ksocknal_find_peer (lnet_ni_t
*ni
, lnet_process_id_t id
);
535 extern void ksocknal_peer_failed (ksock_peer_t
*peer
);
536 extern int ksocknal_create_conn (lnet_ni_t
*ni
, ksock_route_t
*route
,
537 socket_t
*sock
, int type
);
538 extern void ksocknal_close_conn_locked (ksock_conn_t
*conn
, int why
);
539 extern void ksocknal_terminate_conn (ksock_conn_t
*conn
);
540 extern void ksocknal_destroy_conn (ksock_conn_t
*conn
);
541 extern int ksocknal_close_peer_conns_locked (ksock_peer_t
*peer
,
542 __u32 ipaddr
, int why
);
543 extern int ksocknal_close_conn_and_siblings (ksock_conn_t
*conn
, int why
);
544 extern int ksocknal_close_matching_conns (lnet_process_id_t id
, __u32 ipaddr
);
545 extern ksock_conn_t
*ksocknal_find_conn_locked(ksock_peer_t
*peer
,
546 ksock_tx_t
*tx
, int nonblk
);
548 extern int ksocknal_launch_packet(lnet_ni_t
*ni
, ksock_tx_t
*tx
,
549 lnet_process_id_t id
);
550 extern ksock_tx_t
*ksocknal_alloc_tx(int type
, int size
);
551 extern void ksocknal_free_tx (ksock_tx_t
*tx
);
552 extern ksock_tx_t
*ksocknal_alloc_tx_noop(__u64 cookie
, int nonblk
);
553 extern void ksocknal_next_tx_carrier(ksock_conn_t
*conn
);
554 extern void ksocknal_queue_tx_locked (ksock_tx_t
*tx
, ksock_conn_t
*conn
);
555 extern void ksocknal_txlist_done (lnet_ni_t
*ni
, struct list_head
*txlist
,
557 extern void ksocknal_notify (lnet_ni_t
*ni
, lnet_nid_t gw_nid
, int alive
);
558 extern void ksocknal_query (struct lnet_ni
*ni
, lnet_nid_t nid
, cfs_time_t
*when
);
559 extern int ksocknal_thread_start(int (*fn
)(void *arg
), void *arg
, char *name
);
560 extern void ksocknal_thread_fini (void);
561 extern void ksocknal_launch_all_connections_locked (ksock_peer_t
*peer
);
562 extern ksock_route_t
*ksocknal_find_connectable_route_locked (ksock_peer_t
*peer
);
563 extern ksock_route_t
*ksocknal_find_connecting_route_locked (ksock_peer_t
*peer
);
564 extern int ksocknal_new_packet (ksock_conn_t
*conn
, int skip
);
565 extern int ksocknal_scheduler (void *arg
);
566 extern int ksocknal_connd (void *arg
);
567 extern int ksocknal_reaper (void *arg
);
568 extern int ksocknal_send_hello (lnet_ni_t
*ni
, ksock_conn_t
*conn
,
569 lnet_nid_t peer_nid
, ksock_hello_msg_t
*hello
);
570 extern int ksocknal_recv_hello (lnet_ni_t
*ni
, ksock_conn_t
*conn
,
571 ksock_hello_msg_t
*hello
, lnet_process_id_t
*id
,
573 extern void ksocknal_read_callback(ksock_conn_t
*conn
);
574 extern void ksocknal_write_callback(ksock_conn_t
*conn
);
576 extern int ksocknal_lib_zc_capable(ksock_conn_t
*conn
);
577 extern void ksocknal_lib_save_callback(socket_t
*sock
, ksock_conn_t
*conn
);
578 extern void ksocknal_lib_set_callback(socket_t
*sock
, ksock_conn_t
*conn
);
579 extern void ksocknal_lib_reset_callback(socket_t
*sock
, ksock_conn_t
*conn
);
580 extern void ksocknal_lib_push_conn (ksock_conn_t
*conn
);
581 extern int ksocknal_lib_get_conn_addrs (ksock_conn_t
*conn
);
582 extern int ksocknal_lib_setup_sock (socket_t
*so
);
583 extern int ksocknal_lib_send_iov (ksock_conn_t
*conn
, ksock_tx_t
*tx
);
584 extern int ksocknal_lib_send_kiov (ksock_conn_t
*conn
, ksock_tx_t
*tx
);
585 extern void ksocknal_lib_eager_ack (ksock_conn_t
*conn
);
586 extern int ksocknal_lib_recv_iov (ksock_conn_t
*conn
);
587 extern int ksocknal_lib_recv_kiov (ksock_conn_t
*conn
);
588 extern int ksocknal_lib_get_conn_tunables (ksock_conn_t
*conn
, int *txmem
,
589 int *rxmem
, int *nagle
);
591 extern int ksocknal_tunables_init(void);
593 extern void ksocknal_lib_csum_tx(ksock_tx_t
*tx
);
595 extern int ksocknal_lib_memory_pressure(ksock_conn_t
*conn
);
596 extern int ksocknal_lib_bind_thread_to_cpu(int id
);