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 typedef struct /* per scheduler state */
82 spinlock_t kss_lock; /* serialise */
83 struct list_head kss_rx_conns; /* conn waiting to be read */
84 struct list_head kss_tx_conns; /* conn waiting to be written */
85 struct list_head kss_zombie_noop_txs; /* zombie noop tx list */
86 wait_queue_head_t kss_waitq; /* where scheduler sleeps */
87 int kss_nconns; /* # connections assigned to
89 struct ksock_sched_info *kss_info; /* owner of it */
90 struct page *kss_rx_scratch_pgs[LNET_MAX_IOV];
91 struct kvec kss_scratch_iov[LNET_MAX_IOV];
94 struct ksock_sched_info {
95 int ksi_nthreads_max; /* max allowed threads */
96 int ksi_nthreads; /* number of threads */
97 int ksi_cpt; /* CPT id */
98 ksock_sched_t *ksi_scheds; /* array of schedulers */
101 #define KSOCK_CPT_SHIFT 16
102 #define KSOCK_THREAD_ID(cpt, sid) (((cpt) << KSOCK_CPT_SHIFT) | (sid))
103 #define KSOCK_THREAD_CPT(id) ((id) >> KSOCK_CPT_SHIFT)
104 #define KSOCK_THREAD_SID(id) ((id) & ((1UL << KSOCK_CPT_SHIFT) - 1))
106 typedef struct /* in-use interface */
108 __u32 ksni_ipaddr; /* interface's IP address */
109 __u32 ksni_netmask; /* interface's network mask */
110 int ksni_nroutes; /* # routes using (active) */
111 int ksni_npeers; /* # peers using (passive) */
112 char ksni_name[IFNAMSIZ]; /* interface name */
116 int *ksnd_timeout; /* "stuck" socket timeout
118 int *ksnd_nscheds; /* # scheduler threads in each
119 * pool while starting */
120 int *ksnd_nconnds; /* # connection daemons */
121 int *ksnd_nconnds_max; /* max # connection daemons */
122 int *ksnd_min_reconnectms; /* first connection retry after
124 int *ksnd_max_reconnectms; /* ...exponentially increasing to
126 int *ksnd_eager_ack; /* make TCP ack eagerly? */
127 int *ksnd_typed_conns; /* drive sockets by type? */
128 int *ksnd_min_bulk; /* smallest "large" message */
129 int *ksnd_tx_buffer_size; /* socket tx buffer size */
130 int *ksnd_rx_buffer_size; /* socket rx buffer size */
131 int *ksnd_nagle; /* enable NAGLE? */
132 int *ksnd_round_robin; /* round robin for multiple
134 int *ksnd_keepalive; /* # secs for sending keepalive
136 int *ksnd_keepalive_idle; /* # idle secs before 1st probe
138 int *ksnd_keepalive_count; /* # probes */
139 int *ksnd_keepalive_intvl; /* time between probes */
140 int *ksnd_credits; /* # concurrent sends */
141 int *ksnd_peertxcredits; /* # concurrent sends to 1 peer
143 int *ksnd_peerrtrcredits; /* # per-peer router buffer
145 int *ksnd_peertimeout; /* seconds to consider peer dead
147 int *ksnd_enable_csum; /* enable check sum */
148 int *ksnd_inject_csum_error; /* set non-zero to inject
150 int *ksnd_nonblk_zcack; /* always send zc-ack on
151 * non-blocking connection */
152 unsigned int *ksnd_zc_min_payload; /* minimum zero copy payload
154 int *ksnd_zc_recv; /* enable ZC receive (for
156 int *ksnd_zc_recv_min_nfrags; /* minimum # of fragments to
157 * enable ZC receive */
161 __u64 ksnn_incarnation; /* my epoch */
162 spinlock_t ksnn_lock; /* serialise */
163 struct list_head ksnn_list; /* chain on global list */
164 int ksnn_npeers; /* # peers */
165 int ksnn_shutdown; /* shutting down? */
166 int ksnn_ninterfaces; /* IP interfaces */
167 ksock_interface_t ksnn_interfaces[LNET_MAX_INTERFACES];
171 #define SOCKNAL_CONND_TIMEOUT 120
172 /** reserved thread for accepting & creating new connd */
173 #define SOCKNAL_CONND_RESV 1
176 int ksnd_init; /* initialisation state
178 int ksnd_nnets; /* # networks set up */
179 struct list_head ksnd_nets; /* list of nets */
180 rwlock_t ksnd_global_lock; /* stabilize peer/conn
182 struct list_head *ksnd_peers; /* hash table of all my
184 int ksnd_peer_hash_size; /* size of ksnd_peers */
186 int ksnd_nthreads; /* # live threads */
187 int ksnd_shuttingdown; /* tell threads to exit
189 struct ksock_sched_info **ksnd_sched_info; /* schedulers info */
191 atomic_t ksnd_nactive_txs; /* #active txs */
193 struct list_head ksnd_deathrow_conns; /* conns to close:
195 struct list_head ksnd_zombie_conns; /* conns to free:
197 struct list_head ksnd_enomem_conns; /* conns to retry:
199 wait_queue_head_t ksnd_reaper_waitq; /* reaper sleeps here */
200 unsigned long ksnd_reaper_waketime; /* when reaper will wake
202 spinlock_t ksnd_reaper_lock; /* serialise */
204 int ksnd_enomem_tx; /* test ENOMEM sender */
205 int ksnd_stall_tx; /* test sluggish sender
207 int ksnd_stall_rx; /* test sluggish
210 struct list_head ksnd_connd_connreqs; /* incoming connection
212 struct list_head ksnd_connd_routes; /* routes waiting to be
214 wait_queue_head_t ksnd_connd_waitq; /* connds sleep here */
215 int ksnd_connd_connecting; /* # connds connecting
217 time64_t ksnd_connd_failed_stamp;/* time stamp of the
219 * connecting attempt */
220 time64_t ksnd_connd_starting_stamp;/* time stamp of the
221 * last starting connd
223 unsigned ksnd_connd_starting; /* # starting connd */
224 unsigned ksnd_connd_running; /* # running connd */
225 spinlock_t ksnd_connd_lock; /* serialise */
227 struct list_head ksnd_idle_noop_txs; /* list head for freed
229 spinlock_t ksnd_tx_lock; /* serialise, g_lock
234 #define SOCKNAL_INIT_NOTHING 0
235 #define SOCKNAL_INIT_DATA 1
236 #define SOCKNAL_INIT_ALL 2
239 * A packet just assembled for transmission is represented by 1 or more
240 * struct iovec fragments (the first frag contains the portals header),
241 * followed by 0 or more lnet_kiov_t fragments.
243 * On the receive side, initially 1 struct iovec fragment is posted for
244 * receive (the header). Once the header has been received, the payload is
245 * received into either struct iovec or lnet_kiov_t fragments, depending on
246 * what the header matched or whether the message needs forwarding.
248 struct ksock_conn; /* forward ref */
249 struct ksock_peer; /* forward ref */
250 struct ksock_route; /* forward ref */
251 struct ksock_proto; /* forward ref */
253 typedef struct /* transmit packet */
255 struct list_head tx_list; /* queue on conn for transmission etc
257 struct list_head tx_zc_list; /* queue on peer for ZC request */
258 atomic_t tx_refcount; /* tx reference count */
259 int tx_nob; /* # packet bytes */
260 int tx_resid; /* residual bytes */
261 int tx_niov; /* # packet iovec frags */
262 struct kvec *tx_iov; /* packet iovec frags */
263 int tx_nkiov; /* # packet page frags */
264 unsigned short tx_zc_aborted; /* aborted ZC request */
265 unsigned short tx_zc_capable:1; /* payload is large enough for ZC */
266 unsigned short tx_zc_checked:1; /* Have I checked if I should ZC? */
267 unsigned short tx_nonblk:1; /* it's a non-blocking ACK */
268 lnet_kiov_t *tx_kiov; /* packet page frags */
269 struct ksock_conn *tx_conn; /* owning conn */
270 lnet_msg_t *tx_lnetmsg; /* lnet message for lnet_finalize()
272 unsigned long tx_deadline; /* when (in jiffies) tx times out */
273 ksock_msg_t tx_msg; /* socklnd message buffer */
274 int tx_desc_size; /* size of this descriptor */
277 struct kvec iov; /* virt hdr */
278 lnet_kiov_t kiov[0]; /* paged payload */
281 struct kvec iov[1]; /* virt hdr + payload */
286 #define KSOCK_NOOP_TX_SIZE (offsetof(ksock_tx_t, tx_frags.paged.kiov[0]))
288 /* network zero copy callback descriptor embedded in ksock_tx_t */
291 * space for the rx frag descriptors; we either read a single contiguous
292 * header, or up to LNET_MAX_IOV frags of payload of either type.
295 struct kvec iov[LNET_MAX_IOV];
296 lnet_kiov_t kiov[LNET_MAX_IOV];
297 } ksock_rxiovspace_t;
299 #define SOCKNAL_RX_KSM_HEADER 1 /* reading ksock message header */
300 #define SOCKNAL_RX_LNET_HEADER 2 /* reading lnet message header */
301 #define SOCKNAL_RX_PARSE 3 /* Calling lnet_parse() */
302 #define SOCKNAL_RX_PARSE_WAIT 4 /* waiting to be told to read the body */
303 #define SOCKNAL_RX_LNET_PAYLOAD 5 /* reading lnet payload (to deliver here) */
304 #define SOCKNAL_RX_SLOP 6 /* skipping body */
306 typedef struct ksock_conn {
307 struct ksock_peer *ksnc_peer; /* owning peer */
308 struct ksock_route *ksnc_route; /* owning route */
309 struct list_head ksnc_list; /* stash on peer's conn list */
310 struct socket *ksnc_sock; /* actual socket */
311 void *ksnc_saved_data_ready; /* socket's original
312 * data_ready() callback */
313 void *ksnc_saved_write_space; /* socket's original
314 * write_space() callback */
315 atomic_t ksnc_conn_refcount;/* conn refcount */
316 atomic_t ksnc_sock_refcount;/* sock refcount */
317 ksock_sched_t *ksnc_scheduler; /* who schedules this connection
319 __u32 ksnc_myipaddr; /* my IP */
320 __u32 ksnc_ipaddr; /* peer's IP */
321 int ksnc_port; /* peer's port */
322 signed int ksnc_type:3; /* type of connection, should be
324 unsigned int ksnc_closing:1; /* being shut down */
325 unsigned int ksnc_flip:1; /* flip or not, only for V2.x */
326 unsigned int ksnc_zc_capable:1; /* enable to ZC */
327 struct ksock_proto *ksnc_proto; /* protocol for the connection */
330 struct list_head ksnc_rx_list; /* where I enq waiting input or a
331 * forwarding descriptor */
332 unsigned long ksnc_rx_deadline; /* when (in jiffies) receive times
334 __u8 ksnc_rx_started; /* started receiving a message */
335 __u8 ksnc_rx_ready; /* data ready to read */
336 __u8 ksnc_rx_scheduled; /* being progressed */
337 __u8 ksnc_rx_state; /* what is being read */
338 int ksnc_rx_nob_left; /* # bytes to next hdr/body */
339 int ksnc_rx_nob_wanted;/* bytes actually wanted */
340 int ksnc_rx_niov; /* # iovec frags */
341 struct kvec *ksnc_rx_iov; /* the iovec frags */
342 int ksnc_rx_nkiov; /* # page frags */
343 lnet_kiov_t *ksnc_rx_kiov; /* the page frags */
344 ksock_rxiovspace_t ksnc_rx_iov_space; /* space for frag descriptors */
345 __u32 ksnc_rx_csum; /* partial checksum for incoming
347 void *ksnc_cookie; /* rx lnet_finalize passthru arg
349 ksock_msg_t ksnc_msg; /* incoming message buffer:
350 * V2.x message takes the
352 * V1.x message is a bare
353 * lnet_hdr_t, it's stored in
354 * ksnc_msg.ksm_u.lnetmsg */
357 struct list_head ksnc_tx_list; /* where I enq waiting for output
359 struct list_head ksnc_tx_queue; /* packets waiting to be sent */
360 ksock_tx_t *ksnc_tx_carrier; /* next TX that can carry a LNet
361 * message or ZC-ACK */
362 unsigned long ksnc_tx_deadline; /* when (in jiffies) tx times out
364 int ksnc_tx_bufnob; /* send buffer marker */
365 atomic_t ksnc_tx_nob; /* # bytes queued */
366 int ksnc_tx_ready; /* write space */
367 int ksnc_tx_scheduled; /* being progressed */
368 unsigned long ksnc_tx_last_post; /* time stamp of the last posted
372 typedef struct ksock_route {
373 struct list_head ksnr_list; /* chain on peer route list */
374 struct list_head ksnr_connd_list; /* chain on ksnr_connd_routes */
375 struct ksock_peer *ksnr_peer; /* owning peer */
376 atomic_t ksnr_refcount; /* # users */
377 unsigned long ksnr_timeout; /* when (in jiffies) reconnection
379 long ksnr_retry_interval; /* how long between retries */
380 __u32 ksnr_myipaddr; /* my IP */
381 __u32 ksnr_ipaddr; /* IP address to connect to */
382 int ksnr_port; /* port to connect to */
383 unsigned int ksnr_scheduled:1; /* scheduled for attention */
384 unsigned int ksnr_connecting:1; /* connection establishment in
386 unsigned int ksnr_connected:4; /* connections established by
388 unsigned int ksnr_deleted:1; /* been removed from peer? */
389 unsigned int ksnr_share_count; /* created explicitly? */
390 int ksnr_conn_count; /* # conns established by this
394 #define SOCKNAL_KEEPALIVE_PING 1 /* cookie for keepalive ping */
396 typedef struct ksock_peer {
397 struct list_head ksnp_list; /* stash on global peer list */
398 unsigned long ksnp_last_alive; /* when (in jiffies) I was last
400 lnet_process_id_t ksnp_id; /* who's on the other end(s) */
401 atomic_t ksnp_refcount; /* # users */
402 int ksnp_sharecount; /* lconf usage counter */
403 int ksnp_closing; /* being closed */
404 int ksnp_accepting; /* # passive connections pending
406 int ksnp_error; /* errno on closing last conn */
407 __u64 ksnp_zc_next_cookie; /* ZC completion cookie */
408 __u64 ksnp_incarnation; /* latest known peer incarnation
410 struct ksock_proto *ksnp_proto; /* latest known peer protocol */
411 struct list_head ksnp_conns; /* all active connections */
412 struct list_head ksnp_routes; /* routes */
413 struct list_head ksnp_tx_queue; /* waiting packets */
414 spinlock_t ksnp_lock; /* serialize, g_lock unsafe */
415 struct list_head ksnp_zc_req_list; /* zero copy requests wait for
417 unsigned long ksnp_send_keepalive; /* time to send keepalive */
418 lnet_ni_t *ksnp_ni; /* which network */
419 int ksnp_n_passive_ips; /* # of... */
421 /* preferred local interfaces */
422 __u32 ksnp_passive_ips[LNET_MAX_INTERFACES];
425 typedef struct ksock_connreq {
426 struct list_head ksncr_list; /* stash on ksnd_connd_connreqs */
427 lnet_ni_t *ksncr_ni; /* chosen NI */
428 struct socket *ksncr_sock; /* accepted socket */
431 extern ksock_nal_data_t ksocknal_data;
432 extern ksock_tunables_t ksocknal_tunables;
434 #define SOCKNAL_MATCH_NO 0 /* TX can't match type of connection */
435 #define SOCKNAL_MATCH_YES 1 /* TX matches type of connection */
436 #define SOCKNAL_MATCH_MAY 2 /* TX can be sent on the connection, but not
439 typedef struct ksock_proto {
440 /* version number of protocol */
443 /* handshake function */
444 int (*pro_send_hello)(ksock_conn_t *, ksock_hello_msg_t *);
446 /* handshake function */
447 int (*pro_recv_hello)(ksock_conn_t *, ksock_hello_msg_t *, int);
450 void (*pro_pack)(ksock_tx_t *);
453 void (*pro_unpack)(ksock_msg_t *);
455 /* queue tx on the connection */
456 ksock_tx_t *(*pro_queue_tx_msg)(ksock_conn_t *, ksock_tx_t *);
458 /* queue ZC ack on the connection */
459 int (*pro_queue_tx_zcack)(ksock_conn_t *, ksock_tx_t *, __u64);
461 /* handle ZC request */
462 int (*pro_handle_zcreq)(ksock_conn_t *, __u64, int);
465 int (*pro_handle_zcack)(ksock_conn_t *, __u64, __u64);
468 * msg type matches the connection type:
470 * return MATCH_NO : no
471 * return MATCH_YES : matching type
472 * return MATCH_MAY : can be backup
474 int (*pro_match_tx)(ksock_conn_t *, ksock_tx_t *, int);
477 extern ksock_proto_t ksocknal_protocol_v1x;
478 extern ksock_proto_t ksocknal_protocol_v2x;
479 extern ksock_proto_t ksocknal_protocol_v3x;
481 #define KSOCK_PROTO_V1_MAJOR LNET_PROTO_TCP_VERSION_MAJOR
482 #define KSOCK_PROTO_V1_MINOR LNET_PROTO_TCP_VERSION_MINOR
483 #define KSOCK_PROTO_V1 KSOCK_PROTO_V1_MAJOR
485 #ifndef CPU_MASK_NONE
486 #define CPU_MASK_NONE 0UL
489 static inline __u32 ksocknal_csum(__u32 crc, unsigned char const *p, size_t len)
492 return crc32_le(crc, p, len);
495 crc = ((crc + 0x100) & ~0xff) | ((crc + *p++) & 0xff) ;
501 ksocknal_route_mask(void)
503 if (!*ksocknal_tunables.ksnd_typed_conns)
504 return (1 << SOCKLND_CONN_ANY);
506 return ((1 << SOCKLND_CONN_CONTROL) |
507 (1 << SOCKLND_CONN_BULK_IN) |
508 (1 << SOCKLND_CONN_BULK_OUT));
511 static inline struct list_head *
512 ksocknal_nid2peerlist(lnet_nid_t nid)
514 unsigned int hash = ((unsigned int)nid) % ksocknal_data.ksnd_peer_hash_size;
516 return &ksocknal_data.ksnd_peers[hash];
520 ksocknal_conn_addref(ksock_conn_t *conn)
522 LASSERT(atomic_read(&conn->ksnc_conn_refcount) > 0);
523 atomic_inc(&conn->ksnc_conn_refcount);
526 void ksocknal_queue_zombie_conn(ksock_conn_t *conn);
527 void ksocknal_finalize_zcreq(ksock_conn_t *conn);
530 ksocknal_conn_decref(ksock_conn_t *conn)
532 LASSERT(atomic_read(&conn->ksnc_conn_refcount) > 0);
533 if (atomic_dec_and_test(&conn->ksnc_conn_refcount))
534 ksocknal_queue_zombie_conn(conn);
538 ksocknal_connsock_addref(ksock_conn_t *conn)
542 read_lock(&ksocknal_data.ksnd_global_lock);
543 if (!conn->ksnc_closing) {
544 LASSERT(atomic_read(&conn->ksnc_sock_refcount) > 0);
545 atomic_inc(&conn->ksnc_sock_refcount);
548 read_unlock(&ksocknal_data.ksnd_global_lock);
554 ksocknal_connsock_decref(ksock_conn_t *conn)
556 LASSERT(atomic_read(&conn->ksnc_sock_refcount) > 0);
557 if (atomic_dec_and_test(&conn->ksnc_sock_refcount)) {
558 LASSERT(conn->ksnc_closing);
559 sock_release(conn->ksnc_sock);
560 conn->ksnc_sock = NULL;
561 ksocknal_finalize_zcreq(conn);
566 ksocknal_tx_addref(ksock_tx_t *tx)
568 LASSERT(atomic_read(&tx->tx_refcount) > 0);
569 atomic_inc(&tx->tx_refcount);
572 void ksocknal_tx_prep(ksock_conn_t *, ksock_tx_t *tx);
573 void ksocknal_tx_done(lnet_ni_t *ni, ksock_tx_t *tx);
576 ksocknal_tx_decref(ksock_tx_t *tx)
578 LASSERT(atomic_read(&tx->tx_refcount) > 0);
579 if (atomic_dec_and_test(&tx->tx_refcount))
580 ksocknal_tx_done(NULL, tx);
584 ksocknal_route_addref(ksock_route_t *route)
586 LASSERT(atomic_read(&route->ksnr_refcount) > 0);
587 atomic_inc(&route->ksnr_refcount);
590 void ksocknal_destroy_route(ksock_route_t *route);
593 ksocknal_route_decref(ksock_route_t *route)
595 LASSERT(atomic_read(&route->ksnr_refcount) > 0);
596 if (atomic_dec_and_test(&route->ksnr_refcount))
597 ksocknal_destroy_route(route);
601 ksocknal_peer_addref(ksock_peer_t *peer)
603 LASSERT(atomic_read(&peer->ksnp_refcount) > 0);
604 atomic_inc(&peer->ksnp_refcount);
607 void ksocknal_destroy_peer(ksock_peer_t *peer);
610 ksocknal_peer_decref(ksock_peer_t *peer)
612 LASSERT(atomic_read(&peer->ksnp_refcount) > 0);
613 if (atomic_dec_and_test(&peer->ksnp_refcount))
614 ksocknal_destroy_peer(peer);
617 int ksocknal_startup(lnet_ni_t *ni);
618 void ksocknal_shutdown(lnet_ni_t *ni);
619 int ksocknal_ctl(lnet_ni_t *ni, unsigned int cmd, void *arg);
620 int ksocknal_send(lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg);
621 int ksocknal_recv(lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg,
622 int delayed, unsigned int niov,
623 struct kvec *iov, lnet_kiov_t *kiov,
624 unsigned int offset, unsigned int mlen, unsigned int rlen);
625 int ksocknal_accept(lnet_ni_t *ni, struct socket *sock);
627 int ksocknal_add_peer(lnet_ni_t *ni, lnet_process_id_t id, __u32 ip, int port);
628 ksock_peer_t *ksocknal_find_peer_locked(lnet_ni_t *ni, lnet_process_id_t id);
629 ksock_peer_t *ksocknal_find_peer(lnet_ni_t *ni, lnet_process_id_t id);
630 void ksocknal_peer_failed(ksock_peer_t *peer);
631 int ksocknal_create_conn(lnet_ni_t *ni, ksock_route_t *route,
632 struct socket *sock, int type);
633 void ksocknal_close_conn_locked(ksock_conn_t *conn, int why);
634 void ksocknal_terminate_conn(ksock_conn_t *conn);
635 void ksocknal_destroy_conn(ksock_conn_t *conn);
636 int ksocknal_close_peer_conns_locked(ksock_peer_t *peer,
637 __u32 ipaddr, int why);
638 int ksocknal_close_conn_and_siblings(ksock_conn_t *conn, int why);
639 int ksocknal_close_matching_conns(lnet_process_id_t id, __u32 ipaddr);
640 ksock_conn_t *ksocknal_find_conn_locked(ksock_peer_t *peer,
641 ksock_tx_t *tx, int nonblk);
643 int ksocknal_launch_packet(lnet_ni_t *ni, ksock_tx_t *tx,
644 lnet_process_id_t id);
645 ksock_tx_t *ksocknal_alloc_tx(int type, int size);
646 void ksocknal_free_tx(ksock_tx_t *tx);
647 ksock_tx_t *ksocknal_alloc_tx_noop(__u64 cookie, int nonblk);
648 void ksocknal_next_tx_carrier(ksock_conn_t *conn);
649 void ksocknal_queue_tx_locked(ksock_tx_t *tx, ksock_conn_t *conn);
650 void ksocknal_txlist_done(lnet_ni_t *ni, struct list_head *txlist, int error);
651 void ksocknal_notify(lnet_ni_t *ni, lnet_nid_t gw_nid, int alive);
652 void ksocknal_query(struct lnet_ni *ni, lnet_nid_t nid, unsigned long *when);
653 int ksocknal_thread_start(int (*fn)(void *arg), void *arg, char *name);
654 void ksocknal_thread_fini(void);
655 void ksocknal_launch_all_connections_locked(ksock_peer_t *peer);
656 ksock_route_t *ksocknal_find_connectable_route_locked(ksock_peer_t *peer);
657 ksock_route_t *ksocknal_find_connecting_route_locked(ksock_peer_t *peer);
658 int ksocknal_new_packet(ksock_conn_t *conn, int skip);
659 int ksocknal_scheduler(void *arg);
660 int ksocknal_connd(void *arg);
661 int ksocknal_reaper(void *arg);
662 int ksocknal_send_hello(lnet_ni_t *ni, ksock_conn_t *conn,
663 lnet_nid_t peer_nid, ksock_hello_msg_t *hello);
664 int ksocknal_recv_hello(lnet_ni_t *ni, ksock_conn_t *conn,
665 ksock_hello_msg_t *hello, lnet_process_id_t *id,
667 void ksocknal_read_callback(ksock_conn_t *conn);
668 void ksocknal_write_callback(ksock_conn_t *conn);
670 int ksocknal_lib_zc_capable(ksock_conn_t *conn);
671 void ksocknal_lib_save_callback(struct socket *sock, ksock_conn_t *conn);
672 void ksocknal_lib_set_callback(struct socket *sock, ksock_conn_t *conn);
673 void ksocknal_lib_reset_callback(struct socket *sock, ksock_conn_t *conn);
674 void ksocknal_lib_push_conn(ksock_conn_t *conn);
675 int ksocknal_lib_get_conn_addrs(ksock_conn_t *conn);
676 int ksocknal_lib_setup_sock(struct socket *so);
677 int ksocknal_lib_send_iov(ksock_conn_t *conn, ksock_tx_t *tx);
678 int ksocknal_lib_send_kiov(ksock_conn_t *conn, ksock_tx_t *tx);
679 void ksocknal_lib_eager_ack(ksock_conn_t *conn);
680 int ksocknal_lib_recv_iov(ksock_conn_t *conn);
681 int ksocknal_lib_recv_kiov(ksock_conn_t *conn);
682 int ksocknal_lib_get_conn_tunables(ksock_conn_t *conn, int *txmem,
683 int *rxmem, int *nagle);
685 void ksocknal_read_callback(ksock_conn_t *conn);
686 void ksocknal_write_callback(ksock_conn_t *conn);
688 int ksocknal_tunables_init(void);
690 void ksocknal_lib_csum_tx(ksock_tx_t *tx);
692 int ksocknal_lib_memory_pressure(ksock_conn_t *conn);
693 int ksocknal_lib_bind_thread_to_cpu(int id);
695 #endif /* _SOCKLND_SOCKLND_H_ */