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>
50 #define SOCKNAL_PEER_HASH_SIZE 101 /* # peer lists */
51 #define SOCKNAL_RESCHED 100 /* # scheduler loops before reschedule */
52 #define SOCKNAL_ENOMEM_RETRY CFS_TICK /* jiffies between retries */
54 #define SOCKNAL_ROUND_ROBIN 0 /* round robin / load balance */
56 #define SOCKNAL_SINGLE_FRAG_TX 0 /* disable multi-fragment sends */
57 #define SOCKNAL_SINGLE_FRAG_RX 0 /* disable multi-fragment receives */
59 #define SOCKNAL_VERSION_DEBUG 0 /* enable protocol version debugging */
61 /* risk kmap deadlock on multi-frag I/O (backs off to single-frag if disabled).
62 * no risk if we're not running on a CONFIG_HIGHMEM platform. */
64 # define SOCKNAL_RISK_KMAP_DEADLOCK 0
66 # define SOCKNAL_RISK_KMAP_DEADLOCK 1
69 typedef struct /* per scheduler state */
71 spinlock_t kss_lock; /* serialise */
72 struct list_head kss_rx_conns; /* conn waiting to be read */
73 struct list_head kss_tx_conns; /* conn waiting to be written */
74 struct list_head kss_zombie_noop_txs; /* zombie noop tx list */
75 cfs_waitq_t kss_waitq; /* where scheduler sleeps */
76 int kss_nconns; /* # connections assigned to this scheduler */
77 #if !SOCKNAL_SINGLE_FRAG_RX
78 struct page *kss_rx_scratch_pgs[LNET_MAX_IOV];
80 #if !SOCKNAL_SINGLE_FRAG_TX || !SOCKNAL_SINGLE_FRAG_RX
81 struct iovec kss_scratch_iov[LNET_MAX_IOV];
88 unsigned int ksni_valid:1; /* been set yet? */
89 unsigned int ksni_bound:1; /* bound to a cpu yet? */
90 unsigned int ksni_sched:6; /* which scheduler (assumes < 64) */
93 typedef struct /* in-use interface */
95 __u32 ksni_ipaddr; /* interface's IP address */
96 __u32 ksni_netmask; /* interface's network mask */
97 int ksni_nroutes; /* # routes using (active) */
98 int ksni_npeers; /* # peers using (passive) */
99 char ksni_name[16]; /* interface name */
104 int *ksnd_timeout; /* "stuck" socket timeout (seconds) */
105 int *ksnd_nconnds; /* # connection daemons */
106 int *ksnd_min_reconnectms; /* first connection retry after (ms)... */
107 int *ksnd_max_reconnectms; /* ...exponentially increasing to this */
108 int *ksnd_eager_ack; /* make TCP ack eagerly? */
109 int *ksnd_typed_conns; /* drive sockets by type? */
110 int *ksnd_min_bulk; /* smallest "large" message */
111 int *ksnd_tx_buffer_size; /* socket tx buffer size */
112 int *ksnd_rx_buffer_size; /* socket rx buffer size */
113 int *ksnd_nagle; /* enable NAGLE? */
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_enable_csum; /* enable check sum */
120 int *ksnd_inject_csum_error; /* set non-zero to inject checksum error */
121 unsigned int *ksnd_zc_min_frag; /* minimum zero copy frag size */
122 int *ksnd_zc_recv; /* enable ZC receive (for Chelsio TOE) */
123 int *ksnd_zc_recv_min_nfrags; /* minimum # of fragments to enable ZC receive */
125 int *ksnd_irq_affinity; /* enable IRQ affinity? */
127 #ifdef SOCKNAL_BACKOFF
128 int *ksnd_backoff_init; /* initial TCP backoff */
129 int *ksnd_backoff_max; /* maximum TCP backoff */
131 #if SOCKNAL_VERSION_DEBUG
132 int *ksnd_protocol; /* protocol version */
134 #if defined(CONFIG_SYSCTL) && !CFS_SYSFS_MODULE_PARM
135 cfs_sysctl_table_header_t *ksnd_sysctl; /* sysctl interface */
141 __u64 ksnn_incarnation; /* my epoch */
142 spinlock_t ksnn_lock; /* serialise */
143 int ksnn_npeers; /* # peers */
144 int ksnn_shutdown; /* shutting down? */
145 int ksnn_ninterfaces; /* IP interfaces */
146 ksock_interface_t ksnn_interfaces[LNET_MAX_INTERFACES];
151 int ksnd_init; /* initialisation state */
152 int ksnd_nnets; /* # networks set up */
154 rwlock_t ksnd_global_lock; /* stabilize peer/conn ops */
155 struct list_head *ksnd_peers; /* hash table of all my known peers */
156 int ksnd_peer_hash_size; /* size of ksnd_peers */
158 int ksnd_nthreads; /* # live threads */
159 int ksnd_shuttingdown; /* tell threads to exit */
160 int ksnd_nschedulers; /* # schedulers */
161 ksock_sched_t *ksnd_schedulers; /* their state */
163 atomic_t ksnd_nactive_txs; /* #active txs */
165 struct list_head ksnd_deathrow_conns; /* conns to close: reaper_lock*/
166 struct list_head ksnd_zombie_conns; /* conns to free: reaper_lock */
167 struct list_head ksnd_enomem_conns; /* conns to retry: reaper_lock*/
168 cfs_waitq_t ksnd_reaper_waitq; /* reaper sleeps here */
169 cfs_time_t ksnd_reaper_waketime; /* when reaper will wake */
170 spinlock_t ksnd_reaper_lock; /* serialise */
172 int ksnd_enomem_tx; /* test ENOMEM sender */
173 int ksnd_stall_tx; /* test sluggish sender */
174 int ksnd_stall_rx; /* test sluggish receiver */
176 struct list_head ksnd_connd_connreqs; /* incoming connection requests */
177 struct list_head ksnd_connd_routes; /* routes waiting to be connected */
178 cfs_waitq_t ksnd_connd_waitq; /* connds sleep here */
179 int ksnd_connd_connecting;/* # connds connecting */
180 spinlock_t ksnd_connd_lock; /* serialise */
182 struct list_head ksnd_idle_noop_txs; /* list head for freed noop tx */
183 spinlock_t ksnd_tx_lock; /* serialise, NOT safe in g_lock */
185 ksock_irqinfo_t ksnd_irqinfo[NR_IRQS];/* irq->scheduler lookup */
189 #define SOCKNAL_INIT_NOTHING 0
190 #define SOCKNAL_INIT_DATA 1
191 #define SOCKNAL_INIT_ALL 2
193 /* A packet just assembled for transmission is represented by 1 or more
194 * struct iovec fragments (the first frag contains the portals header),
195 * followed by 0 or more lnet_kiov_t fragments.
197 * On the receive side, initially 1 struct iovec fragment is posted for
198 * receive (the header). Once the header has been received, the payload is
199 * received into either struct iovec or lnet_kiov_t fragments, depending on
200 * what the header matched or whether the message needs forwarding. */
202 struct ksock_conn; /* forward ref */
203 struct ksock_peer; /* forward ref */
204 struct ksock_route; /* forward ref */
205 struct ksock_proto; /* forward ref */
207 typedef struct /* transmit packet */
209 struct list_head tx_list; /* queue on conn for transmission etc */
210 struct list_head tx_zc_list; /* queue on peer for ZC request */
211 atomic_t tx_refcount; /* tx reference count */
212 int tx_nob; /* # packet bytes */
213 int tx_resid; /* residual bytes */
214 int tx_niov; /* # packet iovec frags */
215 struct iovec *tx_iov; /* packet iovec frags */
216 int tx_nkiov; /* # packet page frags */
217 unsigned int tx_checked_zc; /* Have I checked if I should ZC? */
218 lnet_kiov_t *tx_kiov; /* packet page frags */
219 struct ksock_conn *tx_conn; /* owning conn */
220 lnet_msg_t *tx_lnetmsg; /* lnet message for lnet_finalize() */
221 cfs_time_t tx_deadline; /* when (in jiffies) tx times out */
222 ksock_msg_t tx_msg; /* socklnd message buffer */
223 int tx_desc_size; /* size of this descriptor */
226 struct iovec iov; /* virt hdr */
227 lnet_kiov_t kiov[0]; /* paged payload */
230 struct iovec iov[1]; /* virt hdr + payload */
235 #define KSOCK_NOOP_TX_SIZE ((int)offsetof(ksock_tx_t, tx_frags.paged.kiov[0]))
237 /* network zero copy callback descriptor embedded in ksock_tx_t */
239 /* space for the rx frag descriptors; we either read a single contiguous
240 * header, or up to LNET_MAX_IOV frags of payload of either type. */
242 struct iovec iov[LNET_MAX_IOV];
243 lnet_kiov_t kiov[LNET_MAX_IOV];
244 } ksock_rxiovspace_t;
246 #define SOCKNAL_RX_KSM_HEADER 1 /* reading ksock message header */
247 #define SOCKNAL_RX_LNET_HEADER 2 /* reading lnet message header */
248 #define SOCKNAL_RX_PARSE 3 /* Calling lnet_parse() */
249 #define SOCKNAL_RX_PARSE_WAIT 4 /* waiting to be told to read the body */
250 #define SOCKNAL_RX_LNET_PAYLOAD 5 /* reading lnet payload (to deliver here) */
251 #define SOCKNAL_RX_SLOP 6 /* skipping body */
253 typedef struct ksock_conn
255 struct ksock_peer *ksnc_peer; /* owning peer */
256 struct ksock_route *ksnc_route; /* owning route */
257 struct list_head ksnc_list; /* stash on peer's conn list */
258 cfs_socket_t *ksnc_sock; /* actual socket */
259 void *ksnc_saved_data_ready; /* socket's original data_ready() callback */
260 void *ksnc_saved_write_space; /* socket's original write_space() callback */
261 atomic_t ksnc_conn_refcount; /* conn refcount */
262 atomic_t ksnc_sock_refcount; /* sock refcount */
263 ksock_sched_t *ksnc_scheduler; /* who schedules this connection */
264 __u32 ksnc_myipaddr; /* my IP */
265 __u32 ksnc_ipaddr; /* peer's IP */
266 int ksnc_port; /* peer's port */
267 int ksnc_type:3; /* type of connection, should be signed value */
268 int ksnc_closing:1; /* being shut down */
269 int ksnc_flip:1; /* flip or not, only for V2.x */
270 int ksnc_zc_capable:1; /* enable to ZC */
271 struct ksock_proto *ksnc_proto; /* protocol for the connection */
274 struct list_head ksnc_rx_list; /* where I enq waiting input or a forwarding descriptor */
275 cfs_time_t ksnc_rx_deadline; /* when (in jiffies) receive times out */
276 __u8 ksnc_rx_started; /* started receiving a message */
277 __u8 ksnc_rx_ready; /* data ready to read */
278 __u8 ksnc_rx_scheduled; /* being progressed */
279 __u8 ksnc_rx_state; /* what is being read */
280 int ksnc_rx_nob_left; /* # bytes to next hdr/body */
281 int ksnc_rx_nob_wanted; /* bytes actually wanted */
282 int ksnc_rx_niov; /* # iovec frags */
283 struct iovec *ksnc_rx_iov; /* the iovec frags */
284 int ksnc_rx_nkiov; /* # page frags */
285 lnet_kiov_t *ksnc_rx_kiov; /* the page frags */
286 ksock_rxiovspace_t ksnc_rx_iov_space; /* space for frag descriptors */
287 __u32 ksnc_rx_csum; /* partial checksum for incoming data */
288 void *ksnc_cookie; /* rx lnet_finalize passthru arg */
289 ksock_msg_t ksnc_msg; /* incoming message buffer:
290 * V2.x message takes the whole struct
291 * V1.x message is a bare lnet_hdr_t, it's stored
292 * in ksnc_msg.ksm_u.lnetmsg */
295 struct list_head ksnc_tx_list; /* where I enq waiting for output space */
296 struct list_head ksnc_tx_queue; /* packets waiting to be sent */
297 ksock_tx_t *ksnc_tx_mono; /* V2.x only, next mono-packet, mono-packet is :
298 * a. lnet packet without piggyback
299 * b. noop ZC-ACK packet */
300 cfs_time_t ksnc_tx_deadline; /* when (in jiffies) tx times out */
301 int ksnc_tx_bufnob; /* send buffer marker */
302 atomic_t ksnc_tx_nob; /* # bytes queued */
303 int ksnc_tx_ready; /* write space */
304 int ksnc_tx_scheduled; /* being progressed */
307 typedef struct ksock_route
309 struct list_head ksnr_list; /* chain on peer route list */
310 struct list_head ksnr_connd_list; /* chain on ksnr_connd_routes */
311 struct ksock_peer *ksnr_peer; /* owning peer */
312 atomic_t ksnr_refcount; /* # users */
313 cfs_time_t ksnr_timeout; /* when (in jiffies) reconnection can happen next */
314 cfs_duration_t ksnr_retry_interval; /* how long between retries */
315 __u32 ksnr_myipaddr; /* my IP */
316 __u32 ksnr_ipaddr; /* IP address to connect to */
317 int ksnr_port; /* port to connect to */
318 unsigned int ksnr_scheduled:1; /* scheduled for attention */
319 unsigned int ksnr_connecting:1; /* connection establishment in progress */
320 unsigned int ksnr_connected:4; /* connections established by type */
321 unsigned int ksnr_deleted:1; /* been removed from peer? */
322 unsigned int ksnr_share_count; /* created explicitly? */
323 int ksnr_conn_count; /* # conns established by this route */
326 typedef struct ksock_peer
328 struct list_head ksnp_list; /* stash on global peer list */
329 lnet_process_id_t ksnp_id; /* who's on the other end(s) */
330 atomic_t ksnp_refcount; /* # users */
331 int ksnp_sharecount; /* lconf usage counter */
332 int ksnp_closing; /* being closed */
333 int ksnp_accepting; /* # passive connections pending */
334 int ksnp_error; /* errno on closing last conn */
335 __u64 ksnp_zc_next_cookie;/* ZC completion cookie */
336 __u64 ksnp_incarnation; /* latest known peer incarnation */
337 struct ksock_proto *ksnp_proto; /* latest known peer protocol */
338 struct list_head ksnp_conns; /* all active connections */
339 struct list_head ksnp_routes; /* routes */
340 struct list_head ksnp_tx_queue; /* waiting packets */
341 spinlock_t ksnp_lock; /* serialize, NOT safe in g_lock */
342 struct list_head ksnp_zc_req_list; /* zero copy requests wait for ACK */
343 cfs_time_t ksnp_last_alive; /* when (in jiffies) I was last alive */
344 lnet_ni_t *ksnp_ni; /* which network */
345 int ksnp_n_passive_ips; /* # of... */
346 __u32 ksnp_passive_ips[LNET_MAX_INTERFACES]; /* preferred local interfaces */
349 typedef struct ksock_connreq
351 struct list_head ksncr_list; /* stash on ksnd_connd_connreqs */
352 lnet_ni_t *ksncr_ni; /* chosen NI */
353 cfs_socket_t *ksncr_sock; /* accepted socket */
356 extern ksock_nal_data_t ksocknal_data;
357 extern ksock_tunables_t ksocknal_tunables;
359 typedef struct ksock_proto
361 int pro_version; /* version number of protocol */
362 int (*pro_send_hello)(ksock_conn_t *, ksock_hello_msg_t *); /* handshake function */
363 int (*pro_recv_hello)(ksock_conn_t *, ksock_hello_msg_t *, int);/* handshake function */
364 void (*pro_pack)(ksock_tx_t *); /* message pack */
365 void (*pro_unpack)(ksock_msg_t *); /* message unpack */
368 extern ksock_proto_t ksocknal_protocol_v1x;
369 extern ksock_proto_t ksocknal_protocol_v2x;
371 #define KSOCK_PROTO_V1_MAJOR LNET_PROTO_TCP_VERSION_MAJOR
372 #define KSOCK_PROTO_V1_MINOR LNET_PROTO_TCP_VERSION_MINOR
373 #define KSOCK_PROTO_V1 KSOCK_PROTO_V1_MAJOR
375 #ifndef CPU_MASK_NONE
376 #define CPU_MASK_NONE 0UL
380 ksocknal_route_mask(void)
382 if (!*ksocknal_tunables.ksnd_typed_conns)
383 return (1 << SOCKLND_CONN_ANY);
385 return ((1 << SOCKLND_CONN_CONTROL) |
386 (1 << SOCKLND_CONN_BULK_IN) |
387 (1 << SOCKLND_CONN_BULK_OUT));
390 static inline struct list_head *
391 ksocknal_nid2peerlist (lnet_nid_t nid)
393 unsigned int hash = ((unsigned int)nid) % ksocknal_data.ksnd_peer_hash_size;
395 return (&ksocknal_data.ksnd_peers [hash]);
399 ksocknal_conn_addref (ksock_conn_t *conn)
401 LASSERT (atomic_read(&conn->ksnc_conn_refcount) > 0);
402 atomic_inc(&conn->ksnc_conn_refcount);
405 extern void ksocknal_queue_zombie_conn (ksock_conn_t *conn);
406 extern void ksocknal_finalize_zcreq(ksock_conn_t *conn);
409 ksocknal_conn_decref (ksock_conn_t *conn)
411 LASSERT (atomic_read(&conn->ksnc_conn_refcount) > 0);
412 if (atomic_dec_and_test(&conn->ksnc_conn_refcount))
413 ksocknal_queue_zombie_conn(conn);
417 ksocknal_connsock_addref (ksock_conn_t *conn)
421 read_lock (&ksocknal_data.ksnd_global_lock);
422 if (!conn->ksnc_closing) {
423 LASSERT (atomic_read(&conn->ksnc_sock_refcount) > 0);
424 atomic_inc(&conn->ksnc_sock_refcount);
427 read_unlock (&ksocknal_data.ksnd_global_lock);
433 ksocknal_connsock_decref (ksock_conn_t *conn)
435 LASSERT (atomic_read(&conn->ksnc_sock_refcount) > 0);
436 if (atomic_dec_and_test(&conn->ksnc_sock_refcount)) {
437 LASSERT (conn->ksnc_closing);
438 libcfs_sock_release(conn->ksnc_sock);
439 conn->ksnc_sock = NULL;
440 ksocknal_finalize_zcreq(conn);
445 ksocknal_tx_addref (ksock_tx_t *tx)
447 LASSERT (atomic_read(&tx->tx_refcount) > 0);
448 atomic_inc(&tx->tx_refcount);
451 extern void ksocknal_tx_done (lnet_ni_t *ni, ksock_tx_t *tx);
454 ksocknal_tx_decref (ksock_tx_t *tx)
456 LASSERT (atomic_read(&tx->tx_refcount) > 0);
457 if (atomic_dec_and_test(&tx->tx_refcount))
458 ksocknal_tx_done(NULL, tx);
462 ksocknal_route_addref (ksock_route_t *route)
464 LASSERT (atomic_read(&route->ksnr_refcount) > 0);
465 atomic_inc(&route->ksnr_refcount);
468 extern void ksocknal_destroy_route (ksock_route_t *route);
471 ksocknal_route_decref (ksock_route_t *route)
473 LASSERT (atomic_read (&route->ksnr_refcount) > 0);
474 if (atomic_dec_and_test(&route->ksnr_refcount))
475 ksocknal_destroy_route (route);
479 ksocknal_peer_addref (ksock_peer_t *peer)
481 LASSERT (atomic_read (&peer->ksnp_refcount) > 0);
482 atomic_inc(&peer->ksnp_refcount);
485 extern void ksocknal_destroy_peer (ksock_peer_t *peer);
488 ksocknal_peer_decref (ksock_peer_t *peer)
490 LASSERT (atomic_read (&peer->ksnp_refcount) > 0);
491 if (atomic_dec_and_test(&peer->ksnp_refcount))
492 ksocknal_destroy_peer (peer);
495 int ksocknal_startup (lnet_ni_t *ni);
496 void ksocknal_shutdown (lnet_ni_t *ni);
497 int ksocknal_ctl(lnet_ni_t *ni, unsigned int cmd, void *arg);
498 int ksocknal_send (lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg);
499 int ksocknal_recv(lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg,
500 int delayed, unsigned int niov,
501 struct iovec *iov, lnet_kiov_t *kiov,
502 unsigned int offset, unsigned int mlen, unsigned int rlen);
503 int ksocknal_accept(lnet_ni_t *ni, cfs_socket_t *sock);
505 extern int ksocknal_add_peer(lnet_ni_t *ni, lnet_process_id_t id, __u32 ip, int port);
506 extern ksock_peer_t *ksocknal_find_peer_locked (lnet_ni_t *ni, lnet_process_id_t id);
507 extern ksock_peer_t *ksocknal_find_peer (lnet_ni_t *ni, lnet_process_id_t id);
508 extern void ksocknal_peer_failed (ksock_peer_t *peer);
509 extern int ksocknal_create_conn (lnet_ni_t *ni, ksock_route_t *route,
510 cfs_socket_t *sock, int type);
511 extern void ksocknal_close_conn_locked (ksock_conn_t *conn, int why);
512 extern void ksocknal_terminate_conn (ksock_conn_t *conn);
513 extern void ksocknal_destroy_conn (ksock_conn_t *conn);
514 extern int ksocknal_close_peer_conns_locked (ksock_peer_t *peer,
515 __u32 ipaddr, int why);
516 extern int ksocknal_close_conn_and_siblings (ksock_conn_t *conn, int why);
517 extern int ksocknal_close_matching_conns (lnet_process_id_t id, __u32 ipaddr);
519 extern void ksocknal_queue_tx_locked (ksock_tx_t *tx, ksock_conn_t *conn);
520 extern void ksocknal_txlist_done (lnet_ni_t *ni, struct list_head *txlist, int error);
521 extern void ksocknal_notify (lnet_ni_t *ni, lnet_nid_t gw_nid, int alive);
522 extern int ksocknal_thread_start (int (*fn)(void *arg), void *arg);
523 extern void ksocknal_thread_fini (void);
524 extern ksock_route_t *ksocknal_find_connecting_route_locked (ksock_peer_t *peer);
525 extern int ksocknal_new_packet (ksock_conn_t *conn, int skip);
526 extern int ksocknal_scheduler (void *arg);
527 extern int ksocknal_connd (void *arg);
528 extern int ksocknal_reaper (void *arg);
529 extern int ksocknal_send_hello (lnet_ni_t *ni, ksock_conn_t *conn,
530 lnet_nid_t peer_nid, ksock_hello_msg_t *hello);
531 extern int ksocknal_recv_hello (lnet_ni_t *ni, ksock_conn_t *conn,
532 ksock_hello_msg_t *hello, lnet_process_id_t *id,
534 extern void ksocknal_read_callback(ksock_conn_t *conn);
535 extern void ksocknal_write_callback(ksock_conn_t *conn);
537 extern int ksocknal_lib_zc_capable(cfs_socket_t *sock);
538 extern void ksocknal_lib_save_callback(cfs_socket_t *sock, ksock_conn_t *conn);
539 extern void ksocknal_lib_set_callback(cfs_socket_t *sock, ksock_conn_t *conn);
540 extern void ksocknal_lib_reset_callback(cfs_socket_t *sock, ksock_conn_t *conn);
541 extern void ksocknal_lib_push_conn (ksock_conn_t *conn);
542 extern void ksocknal_lib_bind_irq (unsigned int irq);
543 extern int ksocknal_lib_get_conn_addrs (ksock_conn_t *conn);
544 extern unsigned int ksocknal_lib_sock_irq (cfs_socket_t *sock);
545 extern int ksocknal_lib_setup_sock (cfs_socket_t *so);
546 extern int ksocknal_lib_send_iov (ksock_conn_t *conn, ksock_tx_t *tx);
547 extern int ksocknal_lib_send_kiov (ksock_conn_t *conn, ksock_tx_t *tx);
548 extern void ksocknal_lib_eager_ack (ksock_conn_t *conn);
549 extern int ksocknal_lib_recv_iov (ksock_conn_t *conn);
550 extern int ksocknal_lib_recv_kiov (ksock_conn_t *conn);
551 extern int ksocknal_lib_get_conn_tunables (ksock_conn_t *conn, int *txmem,
552 int *rxmem, int *nagle);
554 extern int ksocknal_tunables_init(void);
555 extern void ksocknal_tunables_fini(void);
556 extern int ksocknal_lib_tunables_init(void);
557 extern void ksocknal_lib_tunables_fini(void);
559 extern void ksocknal_lib_csum_tx(ksock_tx_t *tx);