1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Author: Zach Brown <zab@zabbo.net>
5 * Author: Peter J. Braam <braam@clusterfs.com>
6 * Author: Phil Schwan <phil@clusterfs.com>
7 * Author: Eric Barton <eric@bartonsoftware.com>
9 * This file is part of Lustre, http://www.lustre.org
11 * Portals is free software; you can redistribute it and/or
12 * modify it under the terms of version 2 of the GNU General Public
13 * License as published by the Free Software Foundation.
15 * Portals is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with Portals; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 #define DEBUG_PORTAL_ALLOC
28 # define EXPORT_SYMTAB
31 #define DEBUG_SUBSYSTEM S_LND
33 #if defined(__linux__)
34 #include "socklnd_lib-linux.h"
35 #elif defined(__APPLE__)
36 #include "socklnd_lib-darwin.h"
37 #elif defined(__WINNT__)
38 #include "socklnd_lib-winnt.h"
40 #error Unsupported Operating System
43 #include <libcfs/kp30.h>
44 #include <lnet/lnet.h>
45 #include <lnet/lib-lnet.h>
46 #include <lnet/socklnd.h>
48 #define SOCKNAL_PEER_HASH_SIZE 101 /* # peer lists */
49 #define SOCKNAL_RESCHED 100 /* # scheduler loops before reschedule */
50 #define SOCKNAL_ENOMEM_RETRY CFS_TICK /* jiffies between retries */
52 #define SOCKNAL_ROUND_ROBIN 0 /* round robin / load balance */
54 #define SOCKNAL_SINGLE_FRAG_TX 0 /* disable multi-fragment sends */
55 #define SOCKNAL_SINGLE_FRAG_RX 0 /* disable multi-fragment receives */
57 #define SOCKNAL_VERSION_DEBUG 0 /* enable protocol version debugging */
59 /* risk kmap deadlock on multi-frag I/O (backs off to single-frag if disabled).
60 * no risk if we're not running on a CONFIG_HIGHMEM platform. */
62 # define SOCKNAL_RISK_KMAP_DEADLOCK 0
64 # define SOCKNAL_RISK_KMAP_DEADLOCK 1
67 typedef struct /* per scheduler state */
69 spinlock_t kss_lock; /* serialise */
70 struct list_head kss_rx_conns; /* conn waiting to be read */
71 struct list_head kss_tx_conns; /* conn waiting to be written */
72 struct list_head kss_zombie_noop_txs; /* zombie noop tx list */
73 cfs_waitq_t kss_waitq; /* where scheduler sleeps */
74 int kss_nconns; /* # connections assigned to this scheduler */
79 unsigned int ksni_valid:1; /* been set yet? */
80 unsigned int ksni_bound:1; /* bound to a cpu yet? */
81 unsigned int ksni_sched:6; /* which scheduler (assumes < 64) */
84 typedef struct /* in-use interface */
86 __u32 ksni_ipaddr; /* interface's IP address */
87 __u32 ksni_netmask; /* interface's network mask */
88 int ksni_nroutes; /* # routes using (active) */
89 int ksni_npeers; /* # peers using (passive) */
90 char ksni_name[16]; /* interface name */
95 int *ksnd_timeout; /* "stuck" socket timeout (seconds) */
96 int *ksnd_nconnds; /* # connection daemons */
97 int *ksnd_min_reconnectms; /* first connection retry after (ms)... */
98 int *ksnd_max_reconnectms; /* ...exponentially increasing to this */
99 int *ksnd_eager_ack; /* make TCP ack eagerly? */
100 int *ksnd_typed_conns; /* drive sockets by type? */
101 int *ksnd_min_bulk; /* smallest "large" message */
102 int *ksnd_tx_buffer_size; /* socket tx buffer size */
103 int *ksnd_rx_buffer_size; /* socket rx buffer size */
104 int *ksnd_nagle; /* enable NAGLE? */
105 int *ksnd_keepalive_idle; /* # idle secs before 1st probe */
106 int *ksnd_keepalive_count; /* # probes */
107 int *ksnd_keepalive_intvl; /* time between probes */
108 int *ksnd_credits; /* # concurrent sends */
109 int *ksnd_peercredits; /* # concurrent sends to 1 peer */
110 int *ksnd_enable_csum; /* enable check sum */
111 int *ksnd_inject_csum_error; /* set non-zero to inject checksum error */
112 unsigned int *ksnd_zc_min_frag; /* minimum zero copy frag size */
114 int *ksnd_irq_affinity; /* enable IRQ affinity? */
116 #ifdef SOCKNAL_BACKOFF
117 int *ksnd_backoff_init; /* initial TCP backoff */
118 int *ksnd_backoff_max; /* maximum TCP backoff */
120 #if SOCKNAL_VERSION_DEBUG
121 int *ksnd_protocol; /* protocol version */
123 #if defined(CONFIG_SYSCTL) && !CFS_SYSFS_MODULE_PARM
124 cfs_sysctl_table_header_t *ksnd_sysctl; /* sysctl interface */
130 __u64 ksnn_incarnation; /* my epoch */
131 spinlock_t ksnn_lock; /* serialise */
132 int ksnn_npeers; /* # peers */
133 int ksnn_shutdown; /* shutting down? */
134 int ksnn_ninterfaces; /* IP interfaces */
135 ksock_interface_t ksnn_interfaces[LNET_MAX_INTERFACES];
140 int ksnd_init; /* initialisation state */
141 int ksnd_nnets; /* # networks set up */
143 rwlock_t ksnd_global_lock; /* stabilize peer/conn ops */
144 struct list_head *ksnd_peers; /* hash table of all my known peers */
145 int ksnd_peer_hash_size; /* size of ksnd_peers */
147 int ksnd_nthreads; /* # live threads */
148 int ksnd_shuttingdown; /* tell threads to exit */
149 int ksnd_nschedulers; /* # schedulers */
150 ksock_sched_t *ksnd_schedulers; /* their state */
152 atomic_t ksnd_nactive_txs; /* #active txs */
154 struct list_head ksnd_deathrow_conns; /* conns to close: reaper_lock*/
155 struct list_head ksnd_zombie_conns; /* conns to free: reaper_lock */
156 struct list_head ksnd_enomem_conns; /* conns to retry: reaper_lock*/
157 cfs_waitq_t ksnd_reaper_waitq; /* reaper sleeps here */
158 cfs_time_t ksnd_reaper_waketime; /* when reaper will wake */
159 spinlock_t ksnd_reaper_lock; /* serialise */
161 int ksnd_enomem_tx; /* test ENOMEM sender */
162 int ksnd_stall_tx; /* test sluggish sender */
163 int ksnd_stall_rx; /* test sluggish receiver */
165 struct list_head ksnd_connd_connreqs; /* incoming connection requests */
166 struct list_head ksnd_connd_routes; /* routes waiting to be connected */
167 cfs_waitq_t ksnd_connd_waitq; /* connds sleep here */
168 int ksnd_connd_connecting;/* # connds connecting */
169 spinlock_t ksnd_connd_lock; /* serialise */
171 struct list_head ksnd_idle_noop_txs; /* list head for freed noop tx */
172 spinlock_t ksnd_tx_lock; /* serialise, NOT safe in g_lock */
174 ksock_irqinfo_t ksnd_irqinfo[NR_IRQS];/* irq->scheduler lookup */
178 #define SOCKNAL_INIT_NOTHING 0
179 #define SOCKNAL_INIT_DATA 1
180 #define SOCKNAL_INIT_ALL 2
182 /* A packet just assembled for transmission is represented by 1 or more
183 * struct iovec fragments (the first frag contains the portals header),
184 * followed by 0 or more lnet_kiov_t fragments.
186 * On the receive side, initially 1 struct iovec fragment is posted for
187 * receive (the header). Once the header has been received, the payload is
188 * received into either struct iovec or lnet_kiov_t fragments, depending on
189 * what the header matched or whether the message needs forwarding. */
191 struct ksock_conn; /* forward ref */
192 struct ksock_peer; /* forward ref */
193 struct ksock_route; /* forward ref */
194 struct ksock_proto; /* forward ref */
196 typedef struct /* transmit packet */
198 struct list_head tx_list; /* queue on conn for transmission etc */
199 struct list_head tx_zc_list; /* queue on peer for ZC request */
200 atomic_t tx_refcount; /* tx reference count */
201 int tx_nob; /* # packet bytes */
202 int tx_resid; /* residual bytes */
203 int tx_niov; /* # packet iovec frags */
204 struct iovec *tx_iov; /* packet iovec frags */
205 int tx_nkiov; /* # packet page frags */
206 unsigned int tx_checked_zc; /* Have I checked if I should ZC? */
207 lnet_kiov_t *tx_kiov; /* packet page frags */
208 struct ksock_conn *tx_conn; /* owning conn */
209 lnet_msg_t *tx_lnetmsg; /* lnet message for lnet_finalize() */
210 ksock_msg_t tx_msg; /* socklnd message buffer */
211 int tx_desc_size; /* size of this descriptor */
214 struct iovec iov; /* virt hdr */
215 lnet_kiov_t kiov[0]; /* paged payload */
218 struct iovec iov[1]; /* virt hdr + payload */
223 #define KSOCK_NOOP_TX_SIZE offsetof(ksock_tx_t, tx_frags.paged.kiov[0])
225 /* network zero copy callback descriptor embedded in ksock_tx_t */
227 /* space for the rx frag descriptors; we either read a single contiguous
228 * header, or up to LNET_MAX_IOV frags of payload of either type. */
230 struct iovec iov[LNET_MAX_IOV];
231 lnet_kiov_t kiov[LNET_MAX_IOV];
232 } ksock_rxiovspace_t;
234 #define SOCKNAL_RX_KSM_HEADER 1 /* reading ksock message header */
235 #define SOCKNAL_RX_LNET_HEADER 2 /* reading lnet message header */
236 #define SOCKNAL_RX_PARSE 3 /* Calling lnet_parse() */
237 #define SOCKNAL_RX_PARSE_WAIT 4 /* waiting to be told to read the body */
238 #define SOCKNAL_RX_LNET_PAYLOAD 5 /* reading lnet payload (to deliver here) */
239 #define SOCKNAL_RX_SLOP 6 /* skipping body */
241 typedef struct ksock_conn
243 struct ksock_peer *ksnc_peer; /* owning peer */
244 struct ksock_route *ksnc_route; /* owning route */
245 struct list_head ksnc_list; /* stash on peer's conn list */
246 cfs_socket_t *ksnc_sock; /* actual socket */
247 void *ksnc_saved_data_ready; /* socket's original data_ready() callback */
248 void *ksnc_saved_write_space; /* socket's original write_space() callback */
249 atomic_t ksnc_conn_refcount; /* conn refcount */
250 atomic_t ksnc_sock_refcount; /* sock refcount */
251 ksock_sched_t *ksnc_scheduler; /* who schedules this connection */
252 __u32 ksnc_myipaddr; /* my IP */
253 __u32 ksnc_ipaddr; /* peer's IP */
254 int ksnc_port; /* peer's port */
255 int ksnc_type:3; /* type of connection, should be signed value */
256 int ksnc_closing:1; /* being shut down */
257 int ksnc_flip:1; /* flip or not, only for V2.x */
258 int ksnc_zc_capable:1; /* enable to ZC */
259 struct ksock_proto *ksnc_proto; /* protocol for the connection */
262 struct list_head ksnc_rx_list; /* where I enq waiting input or a forwarding descriptor */
263 cfs_time_t ksnc_rx_deadline; /* when (in jiffies) receive times out */
264 __u8 ksnc_rx_started; /* started receiving a message */
265 __u8 ksnc_rx_ready; /* data ready to read */
266 __u8 ksnc_rx_scheduled; /* being progressed */
267 __u8 ksnc_rx_state; /* what is being read */
268 int ksnc_rx_nob_left; /* # bytes to next hdr/body */
269 int ksnc_rx_nob_wanted; /* bytes actually wanted */
270 int ksnc_rx_niov; /* # iovec frags */
271 struct iovec *ksnc_rx_iov; /* the iovec frags */
272 int ksnc_rx_nkiov; /* # page frags */
273 lnet_kiov_t *ksnc_rx_kiov; /* the page frags */
274 ksock_rxiovspace_t ksnc_rx_iov_space; /* space for frag descriptors */
275 __u32 ksnc_rx_csum; /* partial checksum for incoming data */
276 void *ksnc_cookie; /* rx lnet_finalize passthru arg */
277 ksock_msg_t ksnc_msg; /* incoming message buffer:
278 * V2.x message takes the whole struct
279 * V1.x message is a bare lnet_hdr_t, it's stored
280 * in ksnc_msg.ksm_u.lnetmsg */
283 struct list_head ksnc_tx_list; /* where I enq waiting for output space */
284 struct list_head ksnc_tx_queue; /* packets waiting to be sent */
285 ksock_tx_t *ksnc_tx_mono; /* V2.x only, next mono-packet, mono-packet is :
286 * a. lnet packet without piggyback
287 * b. noop ZC-ACK packet */
288 cfs_time_t ksnc_tx_deadline; /* when (in jiffies) tx times out */
289 int ksnc_tx_bufnob; /* send buffer marker */
290 atomic_t ksnc_tx_nob; /* # bytes queued */
291 int ksnc_tx_ready; /* write space */
292 int ksnc_tx_scheduled; /* being progressed */
294 #if !SOCKNAL_SINGLE_FRAG_RX
295 struct iovec ksnc_rx_scratch_iov[LNET_MAX_IOV];
297 #if !SOCKNAL_SINGLE_FRAG_TX
298 struct iovec ksnc_tx_scratch_iov[LNET_MAX_IOV];
302 typedef struct ksock_route
304 struct list_head ksnr_list; /* chain on peer route list */
305 struct list_head ksnr_connd_list; /* chain on ksnr_connd_routes */
306 struct ksock_peer *ksnr_peer; /* owning peer */
307 atomic_t ksnr_refcount; /* # users */
308 cfs_time_t ksnr_timeout; /* when (in jiffies) reconnection can happen next */
309 cfs_duration_t ksnr_retry_interval; /* how long between retries */
310 __u32 ksnr_myipaddr; /* my IP */
311 __u32 ksnr_ipaddr; /* IP address to connect to */
312 int ksnr_port; /* port to connect to */
313 unsigned int ksnr_scheduled:1; /* scheduled for attention */
314 unsigned int ksnr_connecting:1; /* connection establishment in progress */
315 unsigned int ksnr_connected:4; /* connections established by type */
316 unsigned int ksnr_deleted:1; /* been removed from peer? */
317 unsigned int ksnr_share_count; /* created explicitly? */
318 int ksnr_conn_count; /* # conns established by this route */
321 typedef struct ksock_peer
323 struct list_head ksnp_list; /* stash on global peer list */
324 lnet_process_id_t ksnp_id; /* who's on the other end(s) */
325 atomic_t ksnp_refcount; /* # users */
326 int ksnp_sharecount; /* lconf usage counter */
327 int ksnp_closing; /* being closed */
328 int ksnp_accepting; /* # passive connections pending */
329 int ksnp_error; /* errno on closing last conn */
330 __u64 ksnp_zc_next_cookie;/* ZC completion cookie */
331 __u64 ksnp_incarnation; /* latest known peer incarnation */
332 struct ksock_proto *ksnp_proto; /* latest known peer protocol */
333 struct list_head ksnp_conns; /* all active connections */
334 struct list_head ksnp_routes; /* routes */
335 struct list_head ksnp_tx_queue; /* waiting packets */
336 spinlock_t ksnp_lock; /* serialize, NOT safe in g_lock */
337 struct list_head ksnp_zc_req_list; /* zero copy requests wait for ACK */
338 cfs_time_t ksnp_last_alive; /* when (in jiffies) I was last alive */
339 lnet_ni_t *ksnp_ni; /* which network */
340 int ksnp_n_passive_ips; /* # of... */
341 __u32 ksnp_passive_ips[LNET_MAX_INTERFACES]; /* preferred local interfaces */
344 typedef struct ksock_connreq
346 struct list_head ksncr_list; /* stash on ksnd_connd_connreqs */
347 lnet_ni_t *ksncr_ni; /* chosen NI */
348 cfs_socket_t *ksncr_sock; /* accepted socket */
351 extern ksock_nal_data_t ksocknal_data;
352 extern ksock_tunables_t ksocknal_tunables;
354 typedef struct ksock_proto
356 int pro_version; /* version number of protocol */
357 int (*pro_send_hello)(ksock_conn_t *, ksock_hello_msg_t *); /* handshake function */
358 int (*pro_recv_hello)(ksock_conn_t *, ksock_hello_msg_t *, int);/* handshake function */
359 void (*pro_pack)(ksock_tx_t *); /* message pack */
360 void (*pro_unpack)(ksock_msg_t *); /* message unpack */
363 extern ksock_proto_t ksocknal_protocol_v1x;
364 extern ksock_proto_t ksocknal_protocol_v2x;
366 #define KSOCK_PROTO_V1_MAJOR LNET_PROTO_TCP_VERSION_MAJOR
367 #define KSOCK_PROTO_V1_MINOR LNET_PROTO_TCP_VERSION_MINOR
368 #define KSOCK_PROTO_V1 KSOCK_PROTO_V1_MAJOR
369 #define KSOCK_PROTO_V2 2
372 ksocknal_route_mask(void)
374 if (!*ksocknal_tunables.ksnd_typed_conns)
375 return (1 << SOCKLND_CONN_ANY);
377 return ((1 << SOCKLND_CONN_CONTROL) |
378 (1 << SOCKLND_CONN_BULK_IN) |
379 (1 << SOCKLND_CONN_BULK_OUT));
382 static inline struct list_head *
383 ksocknal_nid2peerlist (lnet_nid_t nid)
385 unsigned int hash = ((unsigned int)nid) % ksocknal_data.ksnd_peer_hash_size;
387 return (&ksocknal_data.ksnd_peers [hash]);
391 ksocknal_conn_addref (ksock_conn_t *conn)
393 LASSERT (atomic_read(&conn->ksnc_conn_refcount) > 0);
394 atomic_inc(&conn->ksnc_conn_refcount);
397 extern void ksocknal_queue_zombie_conn (ksock_conn_t *conn);
400 ksocknal_conn_decref (ksock_conn_t *conn)
402 LASSERT (atomic_read(&conn->ksnc_conn_refcount) > 0);
403 if (atomic_dec_and_test(&conn->ksnc_conn_refcount))
404 ksocknal_queue_zombie_conn(conn);
408 ksocknal_connsock_addref (ksock_conn_t *conn)
412 read_lock (&ksocknal_data.ksnd_global_lock);
413 if (!conn->ksnc_closing) {
414 LASSERT (atomic_read(&conn->ksnc_sock_refcount) > 0);
415 atomic_inc(&conn->ksnc_sock_refcount);
418 read_unlock (&ksocknal_data.ksnd_global_lock);
424 ksocknal_connsock_decref (ksock_conn_t *conn)
426 LASSERT (atomic_read(&conn->ksnc_sock_refcount) > 0);
427 if (atomic_dec_and_test(&conn->ksnc_sock_refcount)) {
428 LASSERT (conn->ksnc_closing);
429 libcfs_sock_release(conn->ksnc_sock);
430 conn->ksnc_sock = NULL;
435 ksocknal_tx_addref (ksock_tx_t *tx)
437 LASSERT (atomic_read(&tx->tx_refcount) > 0);
438 atomic_inc(&tx->tx_refcount);
441 extern void ksocknal_tx_done (lnet_ni_t *ni, ksock_tx_t *tx);
444 ksocknal_tx_decref (ksock_tx_t *tx)
446 LASSERT (atomic_read(&tx->tx_refcount) > 0);
447 if (atomic_dec_and_test(&tx->tx_refcount))
448 ksocknal_tx_done(NULL, tx);
452 ksocknal_route_addref (ksock_route_t *route)
454 LASSERT (atomic_read(&route->ksnr_refcount) > 0);
455 atomic_inc(&route->ksnr_refcount);
458 extern void ksocknal_destroy_route (ksock_route_t *route);
461 ksocknal_route_decref (ksock_route_t *route)
463 LASSERT (atomic_read (&route->ksnr_refcount) > 0);
464 if (atomic_dec_and_test(&route->ksnr_refcount))
465 ksocknal_destroy_route (route);
469 ksocknal_peer_addref (ksock_peer_t *peer)
471 LASSERT (atomic_read (&peer->ksnp_refcount) > 0);
472 atomic_inc(&peer->ksnp_refcount);
475 extern void ksocknal_destroy_peer (ksock_peer_t *peer);
478 ksocknal_peer_decref (ksock_peer_t *peer)
480 LASSERT (atomic_read (&peer->ksnp_refcount) > 0);
481 if (atomic_dec_and_test(&peer->ksnp_refcount))
482 ksocknal_destroy_peer (peer);
485 int ksocknal_startup (lnet_ni_t *ni);
486 void ksocknal_shutdown (lnet_ni_t *ni);
487 int ksocknal_ctl(lnet_ni_t *ni, unsigned int cmd, void *arg);
488 int ksocknal_send (lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg);
489 int ksocknal_recv(lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg,
490 int delayed, unsigned int niov,
491 struct iovec *iov, lnet_kiov_t *kiov,
492 unsigned int offset, unsigned int mlen, unsigned int rlen);
493 int ksocknal_accept(lnet_ni_t *ni, cfs_socket_t *sock);
495 extern int ksocknal_add_peer(lnet_ni_t *ni, lnet_process_id_t id, __u32 ip, int port);
496 extern ksock_peer_t *ksocknal_find_peer_locked (lnet_ni_t *ni, lnet_process_id_t id);
497 extern ksock_peer_t *ksocknal_find_peer (lnet_ni_t *ni, lnet_process_id_t id);
498 extern void ksocknal_peer_failed (ksock_peer_t *peer);
499 extern int ksocknal_create_conn (lnet_ni_t *ni, ksock_route_t *route,
500 cfs_socket_t *sock, int type);
501 extern void ksocknal_close_conn_locked (ksock_conn_t *conn, int why);
502 extern void ksocknal_terminate_conn (ksock_conn_t *conn);
503 extern void ksocknal_destroy_conn (ksock_conn_t *conn);
504 extern int ksocknal_close_peer_conns_locked (ksock_peer_t *peer,
505 __u32 ipaddr, int why);
506 extern int ksocknal_close_conn_and_siblings (ksock_conn_t *conn, int why);
507 extern int ksocknal_close_matching_conns (lnet_process_id_t id, __u32 ipaddr);
509 extern void ksocknal_queue_tx_locked (ksock_tx_t *tx, ksock_conn_t *conn);
510 extern void ksocknal_txlist_done (lnet_ni_t *ni, struct list_head *txlist, int error);
511 extern void ksocknal_notify (lnet_ni_t *ni, lnet_nid_t gw_nid, int alive);
512 extern int ksocknal_thread_start (int (*fn)(void *arg), void *arg);
513 extern void ksocknal_thread_fini (void);
514 extern ksock_route_t *ksocknal_find_connecting_route_locked (ksock_peer_t *peer);
515 extern int ksocknal_new_packet (ksock_conn_t *conn, int skip);
516 extern int ksocknal_scheduler (void *arg);
517 extern int ksocknal_connd (void *arg);
518 extern int ksocknal_reaper (void *arg);
519 extern int ksocknal_send_hello (lnet_ni_t *ni, ksock_conn_t *conn,
520 lnet_nid_t peer_nid, ksock_hello_msg_t *hello);
521 extern int ksocknal_recv_hello (lnet_ni_t *ni, ksock_conn_t *conn,
522 ksock_hello_msg_t *hello, lnet_process_id_t *id,
524 extern void ksocknal_read_callback(ksock_conn_t *conn);
525 extern void ksocknal_write_callback(ksock_conn_t *conn);
527 extern int ksocknal_lib_zc_capable(cfs_socket_t *sock);
528 extern void ksocknal_lib_save_callback(cfs_socket_t *sock, ksock_conn_t *conn);
529 extern void ksocknal_lib_set_callback(cfs_socket_t *sock, ksock_conn_t *conn);
530 extern void ksocknal_lib_reset_callback(cfs_socket_t *sock, ksock_conn_t *conn);
531 extern void ksocknal_lib_push_conn (ksock_conn_t *conn);
532 extern void ksocknal_lib_bind_irq (unsigned int irq);
533 extern int ksocknal_lib_get_conn_addrs (ksock_conn_t *conn);
534 extern unsigned int ksocknal_lib_sock_irq (cfs_socket_t *sock);
535 extern int ksocknal_lib_setup_sock (cfs_socket_t *so);
536 extern int ksocknal_lib_send_iov (ksock_conn_t *conn, ksock_tx_t *tx);
537 extern int ksocknal_lib_send_kiov (ksock_conn_t *conn, ksock_tx_t *tx);
538 extern void ksocknal_lib_eager_ack (ksock_conn_t *conn);
539 extern int ksocknal_lib_recv_iov (ksock_conn_t *conn);
540 extern int ksocknal_lib_recv_kiov (ksock_conn_t *conn);
541 extern int ksocknal_lib_get_conn_tunables (ksock_conn_t *conn, int *txmem,
542 int *rxmem, int *nagle);
544 extern int ksocknal_lib_tunables_init(void);
545 extern void ksocknal_lib_tunables_fini(void);
547 extern void ksocknal_lib_csum_tx(ksock_tx_t *tx);