2 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
4 * Copyright (c) 2011, 2017, 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 #ifndef _SOCKLND_SOCKLND_H_
29 #define _SOCKLND_SOCKLND_H_
31 #define DEBUG_PORTAL_ALLOC
32 #define DEBUG_SUBSYSTEM S_LND
34 #include <linux/crc32.h>
35 #include <linux/errno.h>
37 #include <linux/init.h>
38 #include <linux/kernel.h>
39 #include <linux/kthread.h>
40 #include <linux/kmod.h>
41 #include <linux/list.h>
43 #include <linux/module.h>
44 #include <linux/pagemap.h>
45 #include <linux/stat.h>
46 #include <linux/string.h>
47 #include <linux/syscalls.h>
48 #include <linux/sysctl.h>
49 #include <linux/uio.h>
50 #include <linux/unistd.h>
51 #include <linux/hashtable.h>
55 #include <lnet/lib-lnet.h>
56 #include <lnet/socklnd.h>
58 #ifndef NETIF_F_CSUM_MASK
59 # define NETIF_F_CSUM_MASK NETIF_F_ALL_CSUM
62 /* assume one thread for each connection type */
63 #define SOCKNAL_NSCHEDS 3
64 #define SOCKNAL_NSCHEDS_HIGH (SOCKNAL_NSCHEDS << 1)
66 #define SOCKNAL_PEER_HASH_BITS 7 /* log2 of # peer_ni lists */
67 #define SOCKNAL_RESCHED 100 /* # scheduler loops before reschedule */
68 #define SOCKNAL_INSANITY_RECONN 5000 /* connd is trying on reconn infinitely */
69 #define SOCKNAL_ENOMEM_RETRY 1 /* seconds between retries */
71 #define SOCKNAL_SINGLE_FRAG_TX 0 /* disable multi-fragment sends */
72 #define SOCKNAL_SINGLE_FRAG_RX 0 /* disable multi-fragment receives */
74 #define SOCKNAL_VERSION_DEBUG 0 /* enable protocol version debugging */
76 /* risk kmap deadlock on multi-frag I/O (backs off to single-frag if disabled).
77 * no risk if we're not running on a CONFIG_HIGHMEM platform. */
79 # define SOCKNAL_RISK_KMAP_DEADLOCK 0
81 # define SOCKNAL_RISK_KMAP_DEADLOCK 1
84 /* per scheduler state */
88 /* conn waiting to be written */
89 struct list_head kss_rx_conns;
90 struct list_head kss_tx_conns;
91 /* zombie noop tx list */
92 struct list_head kss_zombie_noop_txs;
93 /* where scheduler sleeps */
94 wait_queue_head_t kss_waitq;
95 /* # connections assigned to this scheduler */
97 /* max allowed threads */
99 /* number of threads */
105 #define KSOCK_CPT_SHIFT 16
106 #define KSOCK_THREAD_ID(cpt, sid) (((cpt) << KSOCK_CPT_SHIFT) | (sid))
107 #define KSOCK_THREAD_CPT(id) ((id) >> KSOCK_CPT_SHIFT)
108 #define KSOCK_THREAD_SID(id) ((id) & ((1UL << KSOCK_CPT_SHIFT) - 1))
110 struct ksock_interface { /* in-use interface */
111 int ksni_index; /* Linux interface index */
112 __u32 ksni_ipaddr; /* interface's IP address */
113 __u32 ksni_netmask; /* interface's network mask */
114 int ksni_nroutes; /* # routes using (active) */
115 int ksni_npeers; /* # peers using (passive) */
116 char ksni_name[IFNAMSIZ]; /* interface name */
119 struct ksock_tunables {
120 /* "stuck" socket timeout (seconds) */
122 /* # scheduler threads in each pool while starting */
124 int *ksnd_nconnds; /* # connection daemons */
125 int *ksnd_nconnds_max; /* max # connection daemons */
126 int *ksnd_min_reconnectms; /* first connection retry after (ms)... */
127 int *ksnd_max_reconnectms; /* ...exponentially increasing to this */
128 int *ksnd_eager_ack; /* make TCP ack eagerly? */
129 int *ksnd_typed_conns; /* drive sockets by type? */
130 int *ksnd_min_bulk; /* smallest "large" message */
131 int *ksnd_tx_buffer_size; /* socket tx buffer size */
132 int *ksnd_rx_buffer_size; /* socket rx buffer size */
133 int *ksnd_nagle; /* enable NAGLE? */
134 int *ksnd_round_robin; /* round robin for multiple interfaces */
135 int *ksnd_keepalive; /* # secs for sending keepalive NOOP */
136 int *ksnd_keepalive_idle; /* # idle secs before 1st probe */
137 int *ksnd_keepalive_count; /* # probes */
138 int *ksnd_keepalive_intvl; /* time between probes */
139 int *ksnd_credits; /* # concurrent sends */
140 int *ksnd_peertxcredits; /* # concurrent sends to 1 peer_ni */
141 int *ksnd_peerrtrcredits; /* # per-peer_ni router buffer credits */
142 int *ksnd_peertimeout; /* seconds to consider peer_ni dead */
143 int *ksnd_enable_csum; /* enable check sum */
144 int *ksnd_inject_csum_error; /* set non-zero to inject checksum error */
145 int *ksnd_nonblk_zcack; /* always send zc-ack on non-blocking connection */
146 unsigned int *ksnd_zc_min_payload; /* minimum zero copy payload size */
147 int *ksnd_zc_recv; /* enable ZC receive (for Chelsio TOE) */
148 int *ksnd_zc_recv_min_nfrags; /* minimum # of fragments to enable ZC receive */
149 int *ksnd_irq_affinity; /* enable IRQ affinity? */
150 #ifdef SOCKNAL_BACKOFF
151 int *ksnd_backoff_init; /* initial TCP backoff */
152 int *ksnd_backoff_max; /* maximum TCP backoff */
154 #if SOCKNAL_VERSION_DEBUG
155 int *ksnd_protocol; /* protocol version */
160 __u64 ksnn_incarnation; /* my epoch */
161 struct list_head ksnn_list; /* chain on global list */
162 atomic_t ksnn_npeers; /* # peers */
163 int ksnn_ninterfaces; /* IP interfaces */
164 struct ksock_interface ksnn_interfaces[LNET_INTERFACES_NUM];
166 /* When the ksock_net is shut down, this (negative) bias is added to
167 * ksnn_npeers, which prevents new peers from being added.
169 #define SOCKNAL_SHUTDOWN_BIAS (INT_MIN+1)
172 #define SOCKNAL_CONND_TIMEOUT 120
173 /** reserved thread for accepting & creating new connd */
174 #define SOCKNAL_CONND_RESV 1
176 struct ksock_nal_data {
177 int ksnd_init; /* initialisation state */
178 int ksnd_nnets; /* # networks set up */
179 struct list_head ksnd_nets; /* list of nets */
180 /* stabilize peer_ni/conn ops */
181 rwlock_t ksnd_global_lock;
182 /* hash table of all my known peers */
183 DECLARE_HASHTABLE(ksnd_peers, SOCKNAL_PEER_HASH_BITS);
185 int ksnd_nthreads; /* # live threads */
186 int ksnd_shuttingdown; /* tell threads to exit */
187 /* schedulers information */
188 struct ksock_sched **ksnd_schedulers;
190 atomic_t ksnd_nactive_txs; /* #active txs */
192 /* conns to close: reaper_lock*/
193 struct list_head ksnd_deathrow_conns;
194 /* conns to free: reaper_lock */
195 struct list_head ksnd_zombie_conns;
196 /* conns to retry: reaper_lock*/
197 struct list_head ksnd_enomem_conns;
198 /* reaper sleeps here */
199 wait_queue_head_t ksnd_reaper_waitq;
200 /* when reaper will wake */
201 time64_t ksnd_reaper_waketime;
203 spinlock_t ksnd_reaper_lock;
205 int ksnd_enomem_tx; /* test ENOMEM sender */
206 int ksnd_stall_tx; /* test sluggish sender */
207 int ksnd_stall_rx; /* test sluggish receiver */
209 /* incoming connection requests */
210 struct list_head ksnd_connd_connreqs;
211 /* routes waiting to be connected */
212 struct list_head ksnd_connd_routes;
213 /* connds sleep here */
214 wait_queue_head_t ksnd_connd_waitq;
215 /* # connds connecting */
216 int ksnd_connd_connecting;
217 /** time stamp of the last failed connecting attempt */
218 time64_t ksnd_connd_failed_stamp;
219 /** # starting connd */
220 unsigned ksnd_connd_starting;
221 /** time stamp of the last starting connd */
222 time64_t ksnd_connd_starting_stamp;
223 /** # running connd */
224 unsigned ksnd_connd_running;
226 spinlock_t ksnd_connd_lock;
228 /* list head for freed noop tx */
229 struct list_head ksnd_idle_noop_txs;
230 /* serialise, g_lock unsafe */
231 spinlock_t ksnd_tx_lock;
234 #define SOCKNAL_INIT_NOTHING 0
235 #define SOCKNAL_INIT_DATA 1
236 #define SOCKNAL_INIT_ALL 2
238 /* A packet just assembled for transmission is represented by 1 or more
239 * struct kvec fragments (the first frag contains the portals header),
240 * followed by 0 or more struct bio_vec fragments.
242 * On the receive side, initially 1 struct kvec fragment is posted for
243 * receive (the header). Once the header has been received, the payload is
244 * received into either struct kvec or struct bio_vec fragments, depending on
245 * what the header matched or whether the message needs forwarding. */
247 struct ksock_conn; /* 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 */
253 struct list_head tx_zc_list; /* queue on peer_ni for ZC request */
254 atomic_t tx_refcount; /* tx reference count */
255 int tx_nob; /* # packet bytes */
256 int tx_resid; /* residual bytes */
257 int tx_niov; /* # packet kvec frags */
258 struct kvec *tx_iov; /* packet kvec frags */
259 int tx_nkiov; /* # packet page frags */
260 unsigned short tx_zc_aborted; /* aborted ZC request */
261 unsigned short tx_zc_capable:1; /* payload is large enough for ZC */
262 unsigned short tx_zc_checked:1; /* Have I checked if I should ZC? */
263 unsigned short tx_nonblk:1; /* it's a non-blocking ACK */
264 struct bio_vec *tx_kiov; /* packet page frags */
265 struct ksock_conn *tx_conn; /* owning conn */
266 struct lnet_msg *tx_lnetmsg; /* lnet message for lnet_finalize() */
267 time64_t tx_deadline; /* when (in secs) tx times out */
268 struct ksock_msg tx_msg; /* socklnd message buffer */
269 int tx_desc_size; /* size of this descriptor */
270 enum lnet_msg_hstatus tx_hstatus; /* health status of tx */
273 struct kvec iov; /* virt hdr */
274 struct bio_vec kiov[0]; /* paged payload */
277 struct kvec iov[1]; /* virt hdr + payload */
282 #define KSOCK_NOOP_TX_SIZE ((int)offsetof(struct ksock_tx, tx_frags.paged.kiov[0]))
284 /* network zero copy callback descriptor embedded in struct ksock_tx */
286 /* space for the rx frag descriptors; we either read a single contiguous
287 * header, or up to LNET_MAX_IOV frags of payload of either type. */
288 union ksock_rxiovspace {
289 struct kvec iov[LNET_MAX_IOV];
290 struct bio_vec kiov[LNET_MAX_IOV];
293 #define SOCKNAL_RX_KSM_HEADER 1 /* reading ksock message header */
294 #define SOCKNAL_RX_LNET_HEADER 2 /* reading lnet message header */
295 #define SOCKNAL_RX_PARSE 3 /* Calling lnet_parse() */
296 #define SOCKNAL_RX_PARSE_WAIT 4 /* waiting to be told to read the body */
297 #define SOCKNAL_RX_LNET_PAYLOAD 5 /* reading lnet payload (to deliver here) */
298 #define SOCKNAL_RX_SLOP 6 /* skipping body */
301 struct ksock_peer_ni *ksnc_peer; /* owning peer_ni */
302 struct ksock_route *ksnc_route; /* owning route */
303 struct list_head ksnc_list; /* stash on peer_ni's conn list */
304 struct socket *ksnc_sock; /* actual socket */
305 void *ksnc_saved_data_ready; /* socket's original data_ready() callback */
306 void *ksnc_saved_write_space; /* socket's original write_space() callback */
307 atomic_t ksnc_conn_refcount; /* conn refcount */
308 atomic_t ksnc_sock_refcount; /* sock refcount */
309 struct ksock_sched *ksnc_scheduler; /* who schedules this connection */
310 __u32 ksnc_myipaddr; /* my IP */
311 __u32 ksnc_ipaddr; /* peer_ni's IP */
312 int ksnc_port; /* peer_ni's port */
313 signed int ksnc_type:3; /* type of connection,
314 * should be signed value */
315 unsigned int ksnc_closing:1; /* being shut down */
316 unsigned int ksnc_flip:1; /* flip or not, only for V2.x */
317 unsigned int ksnc_zc_capable:1; /* enable to ZC */
318 const struct ksock_proto *ksnc_proto; /* protocol for the connection */
322 /* where I enq waiting input or a forwarding descriptor */
323 struct list_head ksnc_rx_list;
324 time64_t ksnc_rx_deadline; /* when (in seconds) receive times out */
325 __u8 ksnc_rx_started; /* started receiving a message */
326 __u8 ksnc_rx_ready; /* data ready to read */
327 __u8 ksnc_rx_scheduled;/* being progressed */
328 __u8 ksnc_rx_state; /* what is being read */
329 int ksnc_rx_nob_left; /* # bytes to next hdr/body */
330 int ksnc_rx_nob_wanted; /* bytes actually wanted */
331 int ksnc_rx_niov; /* # kvec frags */
332 struct kvec *ksnc_rx_iov; /* the kvec frags */
333 int ksnc_rx_nkiov; /* # page frags */
334 struct bio_vec *ksnc_rx_kiov; /* the page frags */
335 union ksock_rxiovspace ksnc_rx_iov_space;/* space for frag descriptors */
336 __u32 ksnc_rx_csum; /* partial checksum for incoming
338 struct lnet_msg *ksnc_lnet_msg; /* rx lnet_finalize arg*/
339 struct ksock_msg ksnc_msg; /* incoming message buffer:
340 * V2.x message takes the
342 * V1.x message is a bare
343 * struct lnet_hdr, it's stored
344 * in ksnc_msg.ksm_u.lnetmsg
347 /* where I enq waiting for output space */
348 struct list_head ksnc_tx_list;
349 /* packets waiting to be sent */
350 struct list_head ksnc_tx_queue;
351 /* next TX that can carry a LNet message or ZC-ACK */
352 struct ksock_tx *ksnc_tx_carrier;
353 /* when (in seconds) tx times out */
354 time64_t ksnc_tx_deadline;
355 /* send buffer marker */
358 atomic_t ksnc_tx_nob;
361 /* being progressed */
362 int ksnc_tx_scheduled;
363 /* time stamp of the last posted TX */
364 time64_t ksnc_tx_last_post;
368 struct list_head ksnr_list; /* chain on peer_ni route list*/
369 struct list_head ksnr_connd_list;/* chain on ksnr_connd_routes */
370 struct ksock_peer_ni *ksnr_peer; /* owning peer_ni */
371 atomic_t ksnr_refcount; /* # users */
372 time64_t ksnr_timeout; /* when (in secs) reconnection
375 time64_t ksnr_retry_interval;/* secs between retries */
376 int ksnr_myiface; /* interface index */
377 __u32 ksnr_ipaddr; /* IP address to connect to */
378 int ksnr_port; /* port to connect to */
379 unsigned int ksnr_scheduled:1;/* scheduled for attention */
380 unsigned int ksnr_connecting:1;/* connection in progress */
381 unsigned int ksnr_connected:4;/* connections by type */
382 unsigned int ksnr_deleted:1; /* been removed from peer_ni? */
383 unsigned int ksnr_share_count;/* created explicitly? */
384 int ksnr_conn_count;/* # conns for this route */
387 #define SOCKNAL_KEEPALIVE_PING 1 /* cookie for keepalive ping */
389 struct ksock_peer_ni {
390 struct hlist_node ksnp_list; /* stash on global peer_ni list */
391 time64_t ksnp_last_alive;/* when (in seconds) I was last alive */
392 struct lnet_process_id ksnp_id; /* who's on the other end(s) */
393 atomic_t ksnp_refcount; /* # users */
394 int ksnp_closing; /* being closed */
395 int ksnp_accepting; /* # passive connections pending */
396 int ksnp_error; /* errno on closing last conn */
397 __u64 ksnp_zc_next_cookie;/* ZC completion cookie */
398 __u64 ksnp_incarnation; /* latest known peer_ni incarnation */
399 const struct ksock_proto *ksnp_proto; /* latest known protocol */
400 struct list_head ksnp_conns; /* all active connections */
401 struct list_head ksnp_routes; /* routes */
402 struct list_head ksnp_tx_queue; /* waiting packets */
403 spinlock_t ksnp_lock; /* serialize, g_lock unsafe */
404 /* zero copy requests wait for ACK */
405 struct list_head ksnp_zc_req_list;
406 time64_t ksnp_send_keepalive; /* time to send keepalive */
407 struct lnet_ni *ksnp_ni; /* which network */
408 int ksnp_n_passive_ips; /* # of... */
409 __u32 ksnp_passive_ips[LNET_INTERFACES_NUM]; /* preferred local interfaces */
412 struct ksock_connreq {
413 /* stash on ksnd_connd_connreqs */
414 struct list_head ksncr_list;
416 struct lnet_ni *ksncr_ni;
417 /* accepted socket */
418 struct socket *ksncr_sock;
421 extern struct ksock_nal_data ksocknal_data;
422 extern struct ksock_tunables ksocknal_tunables;
424 #define SOCKNAL_MATCH_NO 0 /* TX can't match type of connection */
425 #define SOCKNAL_MATCH_YES 1 /* TX matches type of connection */
426 #define SOCKNAL_MATCH_MAY 2 /* TX can be sent on the connection, but not preferred */
429 int pro_version; /* version number of protocol */
430 int (*pro_send_hello)(struct ksock_conn *, struct ksock_hello_msg *); /* handshake function */
431 int (*pro_recv_hello)(struct ksock_conn *, struct ksock_hello_msg *, int);/* handshake function */
432 void (*pro_pack)(struct ksock_tx *); /* message pack */
433 void (*pro_unpack)(struct ksock_msg *); /* message unpack */
434 struct ksock_tx *(*pro_queue_tx_msg)(struct ksock_conn *, struct ksock_tx *); /* queue tx on the connection */
435 int (*pro_queue_tx_zcack)(struct ksock_conn *, struct ksock_tx *, __u64); /* queue ZC ack on the connection */
436 int (*pro_handle_zcreq)(struct ksock_conn *, __u64, int); /* handle ZC request */
437 int (*pro_handle_zcack)(struct ksock_conn *, __u64, __u64); /* handle ZC ACK */
438 int (*pro_match_tx)(struct ksock_conn *, struct ksock_tx *, int); /* msg type matches the connection type:
440 * return MATCH_NO : no
441 * return MATCH_YES : matching type
442 * return MATCH_MAY : can be backup */
445 extern const struct ksock_proto ksocknal_protocol_v1x;
446 extern const struct ksock_proto ksocknal_protocol_v2x;
447 extern const struct ksock_proto ksocknal_protocol_v3x;
449 #define KSOCK_PROTO_V1_MAJOR LNET_PROTO_TCP_VERSION_MAJOR
450 #define KSOCK_PROTO_V1_MINOR LNET_PROTO_TCP_VERSION_MINOR
451 #define KSOCK_PROTO_V1 KSOCK_PROTO_V1_MAJOR
453 #ifndef CPU_MASK_NONE
454 #define CPU_MASK_NONE 0UL
457 static inline __u32 ksocknal_csum(__u32 crc, unsigned char const *p, size_t len)
460 return crc32_le(crc, p, len);
463 crc = ((crc + 0x100) & ~0xff) | ((crc + *p++) & 0xff) ;
470 ksocknal_route_mask(void)
472 if (!*ksocknal_tunables.ksnd_typed_conns)
473 return (1 << SOCKLND_CONN_ANY);
475 return ((1 << SOCKLND_CONN_CONTROL) |
476 (1 << SOCKLND_CONN_BULK_IN) |
477 (1 << SOCKLND_CONN_BULK_OUT));
481 ksocknal_conn_addref(struct ksock_conn *conn)
483 LASSERT(atomic_read(&conn->ksnc_conn_refcount) > 0);
484 atomic_inc(&conn->ksnc_conn_refcount);
487 extern void ksocknal_queue_zombie_conn(struct ksock_conn *conn);
488 extern void ksocknal_finalize_zcreq(struct ksock_conn *conn);
491 ksocknal_conn_decref(struct ksock_conn *conn)
493 LASSERT(atomic_read(&conn->ksnc_conn_refcount) > 0);
494 if (atomic_dec_and_test(&conn->ksnc_conn_refcount))
495 ksocknal_queue_zombie_conn(conn);
499 ksocknal_connsock_addref(struct ksock_conn *conn)
503 read_lock(&ksocknal_data.ksnd_global_lock);
504 if (!conn->ksnc_closing) {
505 LASSERT(atomic_read(&conn->ksnc_sock_refcount) > 0);
506 atomic_inc(&conn->ksnc_sock_refcount);
509 read_unlock(&ksocknal_data.ksnd_global_lock);
515 ksocknal_connsock_decref(struct ksock_conn *conn)
517 LASSERT(atomic_read(&conn->ksnc_sock_refcount) > 0);
518 if (atomic_dec_and_test(&conn->ksnc_sock_refcount)) {
519 LASSERT (conn->ksnc_closing);
520 sock_release(conn->ksnc_sock);
521 conn->ksnc_sock = NULL;
522 ksocknal_finalize_zcreq(conn);
527 ksocknal_tx_addref(struct ksock_tx *tx)
529 LASSERT(atomic_read(&tx->tx_refcount) > 0);
530 atomic_inc(&tx->tx_refcount);
533 extern void ksocknal_tx_prep(struct ksock_conn *, struct ksock_tx *tx);
534 extern void ksocknal_tx_done(struct lnet_ni *ni, struct ksock_tx *tx, int error);
537 ksocknal_tx_decref(struct ksock_tx *tx)
539 LASSERT(atomic_read(&tx->tx_refcount) > 0);
540 if (atomic_dec_and_test(&tx->tx_refcount))
541 ksocknal_tx_done(NULL, tx, 0);
545 ksocknal_route_addref(struct ksock_route *route)
547 LASSERT(atomic_read(&route->ksnr_refcount) > 0);
548 atomic_inc(&route->ksnr_refcount);
551 extern void ksocknal_destroy_route(struct ksock_route *route);
554 ksocknal_route_decref(struct ksock_route *route)
556 LASSERT(atomic_read(&route->ksnr_refcount) > 0);
557 if (atomic_dec_and_test(&route->ksnr_refcount))
558 ksocknal_destroy_route (route);
562 ksocknal_peer_addref(struct ksock_peer_ni *peer_ni)
564 LASSERT(atomic_read(&peer_ni->ksnp_refcount) > 0);
565 atomic_inc(&peer_ni->ksnp_refcount);
568 extern void ksocknal_destroy_peer(struct ksock_peer_ni *peer_ni);
571 ksocknal_peer_decref(struct ksock_peer_ni *peer_ni)
573 LASSERT (atomic_read (&peer_ni->ksnp_refcount) > 0);
574 if (atomic_dec_and_test(&peer_ni->ksnp_refcount))
575 ksocknal_destroy_peer(peer_ni);
578 int ksocknal_startup(struct lnet_ni *ni);
579 void ksocknal_shutdown(struct lnet_ni *ni);
580 int ksocknal_ctl(struct lnet_ni *ni, unsigned int cmd, void *arg);
581 int ksocknal_send(struct lnet_ni *ni, void *private, struct lnet_msg *lntmsg);
582 int ksocknal_recv(struct lnet_ni *ni, void *private, struct lnet_msg *lntmsg,
583 int delayed, unsigned int niov,
584 struct kvec *iov, struct bio_vec *kiov,
585 unsigned int offset, unsigned int mlen, unsigned int rlen);
586 int ksocknal_accept(struct lnet_ni *ni, struct socket *sock);
588 int ksocknal_add_peer(struct lnet_ni *ni, struct lnet_process_id id, __u32 ip,
590 struct ksock_peer_ni *ksocknal_find_peer_locked(struct lnet_ni *ni,
591 struct lnet_process_id id);
592 struct ksock_peer_ni *ksocknal_find_peer(struct lnet_ni *ni,
593 struct lnet_process_id id);
594 extern void ksocknal_peer_failed(struct ksock_peer_ni *peer_ni);
595 extern int ksocknal_create_conn(struct lnet_ni *ni, struct ksock_route *route,
596 struct socket *sock, int type);
597 extern void ksocknal_close_conn_locked(struct ksock_conn *conn, int why);
598 extern void ksocknal_terminate_conn(struct ksock_conn *conn);
599 extern void ksocknal_destroy_conn(struct ksock_conn *conn);
600 extern int ksocknal_close_peer_conns_locked(struct ksock_peer_ni *peer_ni,
601 __u32 ipaddr, int why);
602 extern int ksocknal_close_conn_and_siblings(struct ksock_conn *conn, int why);
603 int ksocknal_close_matching_conns(struct lnet_process_id id, __u32 ipaddr);
604 extern struct ksock_conn *ksocknal_find_conn_locked(struct ksock_peer_ni *peer_ni,
605 struct ksock_tx *tx, int nonblk);
607 extern int ksocknal_launch_packet(struct lnet_ni *ni, struct ksock_tx *tx,
608 struct lnet_process_id id);
609 extern struct ksock_tx *ksocknal_alloc_tx(int type, int size);
610 extern void ksocknal_free_tx(struct ksock_tx *tx);
611 extern struct ksock_tx *ksocknal_alloc_tx_noop(__u64 cookie, int nonblk);
612 extern void ksocknal_next_tx_carrier(struct ksock_conn *conn);
613 extern void ksocknal_queue_tx_locked(struct ksock_tx *tx, struct ksock_conn *conn);
614 extern void ksocknal_txlist_done(struct lnet_ni *ni, struct list_head *txlist,
616 extern void ksocknal_notify(lnet_nid_t gw_nid);
617 extern void ksocknal_query(struct lnet_ni *ni, lnet_nid_t nid, time64_t *when);
618 extern int ksocknal_thread_start(int (*fn)(void *arg), void *arg, char *name);
619 extern void ksocknal_thread_fini(void);
620 extern void ksocknal_launch_all_connections_locked(struct ksock_peer_ni *peer_ni);
621 extern struct ksock_route *ksocknal_find_connectable_route_locked(struct ksock_peer_ni *peer_ni);
622 extern struct ksock_route *ksocknal_find_connecting_route_locked(struct ksock_peer_ni *peer_ni);
623 extern int ksocknal_new_packet(struct ksock_conn *conn, int skip);
624 extern int ksocknal_scheduler(void *arg);
625 extern int ksocknal_connd(void *arg);
626 extern int ksocknal_reaper(void *arg);
627 int ksocknal_send_hello(struct lnet_ni *ni, struct ksock_conn *conn,
628 lnet_nid_t peer_nid, struct ksock_hello_msg *hello);
629 int ksocknal_recv_hello(struct lnet_ni *ni, struct ksock_conn *conn,
630 struct ksock_hello_msg *hello,
631 struct lnet_process_id *id,
633 extern void ksocknal_read_callback(struct ksock_conn *conn);
634 extern void ksocknal_write_callback(struct ksock_conn *conn);
636 extern int ksocknal_lib_zc_capable(struct ksock_conn *conn);
637 extern void ksocknal_lib_save_callback(struct socket *sock, struct ksock_conn *conn);
638 extern void ksocknal_lib_set_callback(struct socket *sock, struct ksock_conn *conn);
639 extern void ksocknal_lib_reset_callback(struct socket *sock,
640 struct ksock_conn *conn);
641 extern void ksocknal_lib_push_conn(struct ksock_conn *conn);
642 extern int ksocknal_lib_get_conn_addrs(struct ksock_conn *conn);
643 extern int ksocknal_lib_setup_sock(struct socket *so);
644 extern int ksocknal_lib_send_iov(struct ksock_conn *conn, struct ksock_tx *tx,
645 struct kvec *scratch_iov);
646 extern int ksocknal_lib_send_kiov(struct ksock_conn *conn, struct ksock_tx *tx,
647 struct kvec *scratch_iov);
648 extern void ksocknal_lib_eager_ack(struct ksock_conn *conn);
649 extern int ksocknal_lib_recv_iov(struct ksock_conn *conn,
650 struct kvec *scratchiov);
651 extern int ksocknal_lib_recv_kiov(struct ksock_conn *conn, struct page **pages,
652 struct kvec *scratchiov);
653 extern int ksocknal_lib_get_conn_tunables(struct ksock_conn *conn, int *txmem,
654 int *rxmem, int *nagle);
656 extern int ksocknal_tunables_init(void);
658 extern void ksocknal_lib_csum_tx(struct ksock_tx *tx);
660 extern int ksocknal_lib_memory_pressure(struct ksock_conn *conn);
661 extern int ksocknal_lib_bind_thread_to_cpu(int id);
663 #endif /* _SOCKLND_SOCKLND_H_ */