1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2004 Cluster File Systems, Inc.
5 * Author: Eric Barton <eric@bartonsoftware.com>
7 * This file is part of Lustre, http://www.lustre.org.
9 * Lustre is free software; you can redistribute it and/or
10 * modify it under the terms of version 2 of the GNU General Public
11 * License as published by the Free Software Foundation.
13 * Lustre is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with Lustre; if not, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 # define EXPORT_SYMTAB
28 #include <linux/config.h>
29 #include <linux/module.h>
30 #include <linux/kernel.h>
32 #include <linux/string.h>
33 #include <linux/stat.h>
34 #include <linux/errno.h>
35 #include <linux/smp_lock.h>
36 #include <linux/unistd.h>
37 #include <linux/uio.h>
39 #include <asm/system.h>
40 #include <asm/uaccess.h>
43 #include <linux/init.h>
45 #include <linux/file.h>
46 #include <linux/stat.h>
47 #include <linux/list.h>
48 #include <linux/kmod.h>
49 #include <linux/sysctl.h>
51 #define DEBUG_SUBSYSTEM S_LND
53 #include <libcfs/kp30.h>
54 #include <lnet/lnet.h>
55 #include <lnet/lib-lnet.h>
57 #include <linux/iba/ibt.h>
59 #define GCC_VERSION (__GNUC__ * 10000 \
60 + __GNUC_MINOR__ * 100 \
61 + __GNUC_PATCHLEVEL__)
63 /* Test for GCC > 3.2.2 */
64 #if GCC_VERSION <= 30202
65 /* GCC 3.2.2, and presumably several versions before it, will
66 * miscompile this driver. See
67 * http://gcc.gnu.org/bugzilla/show_bug.cgi?id=9853. */
68 #error Invalid GCC version. Must use GCC >= 3.2.3
72 # define IBNAL_N_SCHED num_online_cpus() /* # schedulers */
74 # define IBNAL_N_SCHED 1 /* # schedulers */
77 #define IBNAL_USE_FMR 0 /* map on demand v. use whole mem mapping */
78 #define KIBLND_DETAILED_DEBUG 0
80 /* tunables fixed at compile time */
81 #define IBNAL_PEER_HASH_SIZE 101 /* # peer lists */
82 #define IBNAL_RESCHED 100 /* # scheduler loops before reschedule */
83 #define IBNAL_MSG_QUEUE_SIZE 8 /* # messages/RDMAs in-flight */
84 #define IBNAL_CREDIT_HIGHWATER 7 /* when to eagerly return credits */
85 #define IBNAL_MSG_SIZE (4<<10) /* max size of queued messages (inc hdr) */
86 #define IBNAL_RDMA_BASE 0x0eeb0000
87 #define IBNAL_STARTING_PSN 1
90 /* 7 indicates infinite retry attempts, Infinicon recommended 5 */
91 #define IBNAL_RETRY 5 /* # times to retry */
92 #define IBNAL_RNR_RETRY 5 /* */
93 #define IBNAL_CM_RETRY 5 /* # times to retry connection */
94 #define IBNAL_FLOW_CONTROL 1
95 #define IBNAL_ACK_TIMEOUT 20 /* supposedly 4 secs */
96 #define IBNAL_EE_FLOW 1
97 #define IBNAL_LOCAL_SUB 1
98 #define IBNAL_FAILOVER_ACCEPTED 0
100 /************************/
101 /* derived constants... */
103 /* TX messages (shared by all connections) */
104 #define IBNAL_TX_MSGS() (*kibnal_tunables.kib_ntx)
105 #define IBNAL_TX_MSG_BYTES() (IBNAL_TX_MSGS() * IBNAL_MSG_SIZE)
106 #define IBNAL_TX_MSG_PAGES() ((IBNAL_TX_MSG_BYTES() + PAGE_SIZE - 1)/PAGE_SIZE)
109 # define IBNAL_MAX_RDMA_FRAGS 1
110 # define IBNAL_CONCURRENT_SENDS IBNAL_RX_MSGS
112 # define IBNAL_MAX_RDMA_FRAGS LNET_MAX_IOV
113 # define IBNAL_CONCURRENT_SENDS IBNAL_MSG_QUEUE_SIZE
116 /* RX messages (per connection) */
117 #define IBNAL_RX_MSGS (IBNAL_MSG_QUEUE_SIZE * 2)
118 #define IBNAL_RX_MSG_BYTES (IBNAL_RX_MSGS * IBNAL_MSG_SIZE)
119 #define IBNAL_RX_MSG_PAGES ((IBNAL_RX_MSG_BYTES + PAGE_SIZE - 1)/PAGE_SIZE)
121 #define IBNAL_CQ_ENTRIES() (IBNAL_TX_MSGS() * (1 + IBNAL_MAX_RDMA_FRAGS) + \
122 (IBNAL_RX_MSGS * *kibnal_tunables.kib_concurrent_peers))
126 char **kib_hca_basename; /* HCA base name */
127 char **kib_ipif_basename; /* IPoIB interface base name */
128 char **kib_service_name; /* global service name */
129 unsigned int *kib_service_number; /* global service number */
130 int *kib_min_reconnect_interval; /* min connect retry seconds... */
131 int *kib_max_reconnect_interval; /* max connect retry seconds */
132 int *kib_concurrent_peers; /* max # peers */
133 int *kib_cksum; /* checksum kib_msg_t? */
134 int *kib_timeout; /* comms timeout (seconds) */
135 int *kib_keepalive; /* keepalive timeout (seconds) */
136 int *kib_ntx; /* # tx descs */
137 int *kib_credits; /* # concurrent sends */
138 int *kib_peercredits; /* # concurrent sends to 1 peer */
139 int *kib_sd_retries; /* # concurrent sends to 1 peer */
140 int *kib_concurrent_sends; /* send work queue sizing */
141 #if CONFIG_SYSCTL && !CFS_SYSFS_MODULE_PARM
142 struct ctl_table_header *kib_sysctl; /* sysctl interface */
146 /* NB The Infinicon stack has specific typedefs for some things
147 * (e.g. IB_{L,R}_KEY), that just map back to __u32 etc */
150 int ibp_npages; /* # pages */
151 struct page *ibp_pages[0];
164 int kib_init; /* initialisation state */
165 __u64 kib_incarnation; /* which one am I */
166 int kib_shutdown; /* shut down? */
167 atomic_t kib_nthreads; /* # live threads */
168 lnet_ni_t *kib_ni; /* _the_ iib instance */
170 __u64 kib_port_guid; /* my GUID (lo 64 of GID)*/
171 __u16 kib_port_pkey; /* my pkey, whatever that is */
172 struct semaphore kib_listener_signal; /* signal completion */
173 IB_HANDLE kib_listener_cep; /* connection end point */
175 rwlock_t kib_global_lock; /* stabilize peer/conn ops */
176 int kib_ready; /* CQ callback fired */
177 int kib_checking_cq; /* a scheduler is checking the CQ */
179 struct list_head *kib_peers; /* hash table of all my known peers */
180 int kib_peer_hash_size; /* size of kib_peers */
181 atomic_t kib_npeers; /* # peers extant */
182 atomic_t kib_nconns; /* # connections extant */
184 struct list_head kib_connd_zombies; /* connections to free */
185 struct list_head kib_connd_conns; /* connections to progress */
186 struct list_head kib_connd_peers; /* peers waiting for a connection */
187 wait_queue_head_t kib_connd_waitq; /* connection daemon sleep here */
188 spinlock_t kib_connd_lock; /* serialise */
190 wait_queue_head_t kib_sched_waitq; /* schedulers sleep here */
191 spinlock_t kib_sched_lock; /* serialise */
193 struct kib_tx *kib_tx_descs; /* all the tx descriptors */
194 kib_pages_t *kib_tx_pages; /* premapped tx msg pages */
196 struct list_head kib_idle_txs; /* idle tx descriptors */
197 __u64 kib_next_tx_cookie; /* RDMA completion cookie */
198 spinlock_t kib_tx_lock; /* serialise */
200 IB_HANDLE kib_hca; /* The HCA */
201 int kib_port; /* port on the device */
202 IB_HANDLE kib_pd; /* protection domain */
203 IB_HANDLE kib_sd; /* SD handle */
204 IB_HANDLE kib_cq; /* completion queue */
205 kib_md_t kib_whole_mem; /* whole-mem registration */
207 int kib_hca_idx; /* my HCA number */
208 uint64 kib_hca_guids[8]; /* all the HCA guids */
209 IB_CA_ATTRIBUTES kib_hca_attrs; /* where to get HCA attrs */
211 COMMAND_CONTROL_PARAMETERS kib_sdretry; /* control SD query retries */
214 #define IBNAL_INIT_NOTHING 0
215 #define IBNAL_INIT_DATA 1
216 #define IBNAL_INIT_LIB 2
217 #define IBNAL_INIT_HCA 3
218 #define IBNAL_INIT_PORTATTRS 4
219 #define IBNAL_INIT_SD 5
220 #define IBNAL_INIT_PD 6
221 #define IBNAL_INIT_MD 7
222 #define IBNAL_INIT_TXD 8
223 #define IBNAL_INIT_CQ 9
224 #define IBNAL_INIT_ALL 10
226 /************************************************************************
227 * Wire message structs.
228 * These are sent in sender's byte order (i.e. receiver flips).
229 * CAVEAT EMPTOR: other structs communicated between nodes (e.g. MAD
230 * private data and SM service info), is LE on the wire.
233 typedef struct kib_connparams
235 __u32 ibcp_queue_depth;
236 __u32 ibcp_max_msg_size;
237 __u32 ibcp_max_frags;
238 } WIRE_ATTR kib_connparams_t;
242 lnet_hdr_t ibim_hdr; /* portals header */
243 char ibim_payload[0]; /* piggy-backed payload */
244 } WIRE_ATTR kib_immediate_msg_t;
249 __u64 rd_addr; /* IO VMA address */
250 __u32 rd_nob; /* # of bytes */
251 __u32 rd_key; /* remote key */
252 } WIRE_ATTR kib_rdma_desc_t;
256 __u32 rf_nob; /* # of bytes */
257 __u64 rf_addr; /* remote io vaddr */
258 } WIRE_ATTR kib_rdma_frag_t;
262 __u32 rd_key; /* local/remote key */
263 __u32 rd_nfrag; /* # fragments */
264 kib_rdma_frag_t rd_frags[0]; /* buffer frags */
265 } WIRE_ATTR kib_rdma_desc_t;
270 lnet_hdr_t ibprm_hdr; /* LNET header */
271 __u64 ibprm_cookie; /* opaque completion cookie */
272 } WIRE_ATTR kib_putreq_msg_t;
276 __u64 ibpam_src_cookie; /* reflected completion cookie */
277 __u64 ibpam_dst_cookie; /* opaque completion cookie */
278 kib_rdma_desc_t ibpam_rd; /* sender's sink buffer */
279 } WIRE_ATTR kib_putack_msg_t;
283 lnet_hdr_t ibgm_hdr; /* LNET header */
284 __u64 ibgm_cookie; /* opaque completion cookie */
285 kib_rdma_desc_t ibgm_rd; /* sender's sink buffer */
286 } WIRE_ATTR kib_get_msg_t;
290 __u64 ibcm_cookie; /* opaque completion cookie */
291 __u32 ibcm_status; /* completion status */
292 } WIRE_ATTR kib_completion_msg_t;
296 /* First 2 fields fixed FOR ALL TIME */
297 __u32 ibm_magic; /* I'm an openibnal message */
298 __u16 ibm_version; /* this is my version number */
300 __u8 ibm_type; /* msg type */
301 __u8 ibm_credits; /* returned credits */
302 __u32 ibm_nob; /* # bytes in whole message */
303 __u32 ibm_cksum; /* checksum (0 == no checksum) */
304 __u64 ibm_srcnid; /* sender's NID */
305 __u64 ibm_srcstamp; /* sender's incarnation */
306 __u64 ibm_dstnid; /* destination's NID */
307 __u64 ibm_dststamp; /* destination's incarnation */
308 __u64 ibm_seq; /* sequence number */
311 kib_connparams_t connparams;
312 kib_immediate_msg_t immediate;
313 kib_putreq_msg_t putreq;
314 kib_putack_msg_t putack;
316 kib_completion_msg_t completion;
318 } WIRE_ATTR kib_msg_t;
320 #define IBNAL_MSG_MAGIC LNET_PROTO_IIB_MAGIC /* unique magic */
321 #define IBNAL_MSG_VERSION 2 /* current protocol version */
322 #define IBNAL_MSG_VERSION_RDMAREPLYNOTRSRVD 1 /* previous version */
324 #define IBNAL_MSG_CONNREQ 0xc0 /* connection request */
325 #define IBNAL_MSG_CONNACK 0xc1 /* connection acknowledge */
326 #define IBNAL_MSG_NOOP 0xd0 /* nothing (just credits) */
327 #define IBNAL_MSG_IMMEDIATE 0xd1 /* immediate */
328 #define IBNAL_MSG_PUT_REQ 0xd2 /* putreq (src->sink) */
329 #define IBNAL_MSG_PUT_NAK 0xd3 /* completion (sink->src) */
330 #define IBNAL_MSG_PUT_ACK 0xd4 /* putack (sink->src) */
331 #define IBNAL_MSG_PUT_DONE 0xd5 /* completion (src->sink) */
332 #define IBNAL_MSG_GET_REQ 0xd6 /* getreq (sink->src) */
333 #define IBNAL_MSG_GET_DONE 0xd7 /* completion (src->sink: all OK) */
335 /* connection rejection reasons */
336 #define IBNAL_REJECT_CONN_RACE 0 /* You lost connection race */
337 #define IBNAL_REJECT_NO_RESOURCES 1 /* Out of memory/conns etc */
338 #define IBNAL_REJECT_FATAL 2 /* Anything else */
340 /***********************************************************************/
342 typedef struct kib_rx /* receive message */
344 struct list_head rx_list; /* queue for attention */
345 struct kib_conn *rx_conn; /* owning conn */
346 int rx_nob; /* # bytes received (-1 while posted) */
347 __u64 rx_hca_msg; /* pre-mapped buffer (hca vaddr) */
348 kib_msg_t *rx_msg; /* pre-mapped buffer (host vaddr) */
350 IB_LOCAL_DATASEGMENT rx_gl; /* and its memory */
353 typedef struct kib_tx /* transmit message */
355 struct list_head tx_list; /* queue on idle_txs ibc_tx_queue etc. */
356 struct kib_conn *tx_conn; /* owning conn */
357 int tx_mapped; /* mapped for RDMA? */
358 int tx_sending; /* # tx callbacks outstanding */
359 int tx_queued; /* queued for sending */
360 int tx_waiting; /* waiting for peer */
361 int tx_status; /* completion status */
362 unsigned long tx_deadline; /* completion deadline */
363 __u64 tx_cookie; /* completion cookie */
364 lnet_msg_t *tx_lntmsg[2]; /* lnet msgs to finalize on completion */
365 kib_msg_t *tx_msg; /* pre-mapped buffer (host vaddr) */
366 __u64 tx_hca_msg; /* pre-mapped buffer (HCA vaddr) */
367 int tx_nwrq; /* # send work items */
369 IB_WORK_REQ2 tx_wrq[2]; /* send work items... */
370 IB_LOCAL_DATASEGMENT tx_gl[2]; /* ...and their memory */
371 kib_rdma_desc_t tx_rd[1]; /* rdma descriptor */
372 kib_md_t tx_md; /* mapping */
373 __u64 *tx_pages; /* page phys addrs */
375 IB_WORK_REQ2 *tx_wrq; /* send work items... */
376 IB_LOCAL_DATASEGMENT *tx_gl; /* ...and their memory */
377 kib_rdma_desc_t *tx_rd; /* rdma descriptor (src buffers) */
383 /* scratchpad during connection establishment */
384 IB_QP_ATTRIBUTES_QUERY cv_qpattrs;
386 IB_SERVICE_RECORD cv_svcrec;
387 IB_PATH_RECORD cv_path;
388 CM_CONN_INFO cv_cmci;
391 typedef struct kib_conn
393 struct kib_peer *ibc_peer; /* owning peer */
394 struct list_head ibc_list; /* stash on peer's conn list */
395 __u64 ibc_incarnation; /* which instance of the peer */
396 __u64 ibc_txseq; /* tx sequence number */
397 __u64 ibc_rxseq; /* rx sequence number */
398 __u32 ibc_version; /* peer protocol version */
399 atomic_t ibc_refcount; /* # users */
400 int ibc_state; /* what's happening */
401 int ibc_nsends_posted; /* # uncompleted sends */
402 int ibc_credits; /* # credits I have */
403 int ibc_outstanding_credits; /* # credits to return */
404 int ibc_reserved_credits; /* # credits for ACK/DONE msgs */
405 unsigned long ibc_last_send; /* time of last send */
406 struct list_head ibc_early_rxs; /* rxs completed before ESTABLISHED */
407 struct list_head ibc_tx_queue_nocred; /* sends that don't need a cred */
408 struct list_head ibc_tx_queue_rsrvd; /* sends that need a reserved cred */
409 struct list_head ibc_tx_queue; /* send queue */
410 struct list_head ibc_active_txs; /* active tx awaiting completion */
411 spinlock_t ibc_lock; /* serialise */
412 kib_rx_t *ibc_rxs; /* the rx descs */
413 kib_pages_t *ibc_rx_pages; /* premapped rx msg pages */
414 IB_HANDLE ibc_qp; /* queue pair */
415 IB_HANDLE ibc_cep; /* CM endpoint */
416 kib_connvars_t *ibc_cvars; /* connection scratchpad */
419 #define IBNAL_CONN_INIT_NOTHING 0 /* initial state */
420 #define IBNAL_CONN_INIT_QP 1 /* ibc_qp set up */
421 #define IBNAL_CONN_CONNECTING 2 /* started to connect */
422 #define IBNAL_CONN_ESTABLISHED 3 /* connection established */
423 #define IBNAL_CONN_DISCONNECTING 4 /* to send disconnect req */
424 #define IBNAL_CONN_DISCONNECTED 5 /* no more QP or CM traffic */
426 /* types of connection */
427 #define IBNAL_CONN_ACTIVE 0 /* active connect */
428 #define IBNAL_CONN_PASSIVE 1 /* passive connect */
429 #define IBNAL_CONN_WAITING 2 /* waiting for connect */
431 typedef struct kib_peer
433 struct list_head ibp_list; /* stash on global peer list */
434 struct list_head ibp_connd_list; /* schedule on kib_connd_peers */
435 lnet_nid_t ibp_nid; /* who's on the other end(s) */
436 atomic_t ibp_refcount; /* # users */
437 int ibp_persistence; /* "known" peer refs */
438 int ibp_version; /* protocol version */
439 struct list_head ibp_conns; /* all active connections */
440 struct list_head ibp_tx_queue; /* msgs waiting for a conn */
441 int ibp_connecting; /* active connects in progress */
442 int ibp_accepting; /* passive connects in progress */
443 int ibp_passivewait; /* waiting for peer to connect */
444 unsigned long ibp_passivewait_deadline; /* when passive wait must complete */
445 unsigned long ibp_reconnect_time; /* when reconnect may be attempted */
446 unsigned long ibp_reconnect_interval; /* exponential backoff */
447 int ibp_error; /* errno on closing this peer */
448 cfs_time_t ibp_last_alive; /* when (in jiffies) I was last alive */
452 extern kib_data_t kibnal_data;
453 extern kib_tunables_t kibnal_tunables;
455 /******************************************************************************/
457 /* these are purposely avoiding using local vars so they don't increase
458 * stack consumption. */
460 #define kibnal_conn_addref(conn) \
462 CDEBUG(D_NET, "conn[%p] (%d)++\n", \
463 (conn), atomic_read(&(conn)->ibc_refcount)); \
464 LASSERT(atomic_read(&(conn)->ibc_refcount) > 0); \
465 atomic_inc(&(conn)->ibc_refcount); \
468 #define kibnal_conn_decref(conn) \
470 unsigned long flags; \
472 CDEBUG(D_NET, "conn[%p] (%d)--\n", \
473 (conn), atomic_read(&(conn)->ibc_refcount)); \
474 LASSERT(atomic_read(&(conn)->ibc_refcount) > 0); \
475 if (atomic_dec_and_test(&(conn)->ibc_refcount)) { \
476 spin_lock_irqsave(&kibnal_data.kib_connd_lock, flags); \
477 list_add_tail(&(conn)->ibc_list, \
478 &kibnal_data.kib_connd_zombies); \
479 wake_up(&kibnal_data.kib_connd_waitq); \
480 spin_unlock_irqrestore(&kibnal_data.kib_connd_lock, flags); \
484 #define kibnal_peer_addref(peer) \
486 CDEBUG(D_NET, "peer[%p] -> %s (%d)++\n", \
487 (peer), libcfs_nid2str((peer)->ibp_nid), \
488 atomic_read (&(peer)->ibp_refcount)); \
489 LASSERT(atomic_read(&(peer)->ibp_refcount) > 0); \
490 atomic_inc(&(peer)->ibp_refcount); \
493 #define kibnal_peer_decref(peer) \
495 CDEBUG(D_NET, "peer[%p] -> %s (%d)--\n", \
496 (peer), libcfs_nid2str((peer)->ibp_nid), \
497 atomic_read (&(peer)->ibp_refcount)); \
498 LASSERT(atomic_read(&(peer)->ibp_refcount) > 0); \
499 if (atomic_dec_and_test(&(peer)->ibp_refcount)) \
500 kibnal_destroy_peer(peer); \
503 /******************************************************************************/
505 static inline struct list_head *
506 kibnal_nid2peerlist (lnet_nid_t nid)
508 unsigned int hash = ((unsigned int)nid) % kibnal_data.kib_peer_hash_size;
510 return (&kibnal_data.kib_peers [hash]);
514 kibnal_peer_active(kib_peer_t *peer)
516 /* Am I in the peer hash table? */
517 return (!list_empty(&peer->ibp_list));
521 kibnal_peer_connecting(kib_peer_t *peer)
523 /* Am I expecting a connection to materialise? */
524 return (peer->ibp_connecting != 0 ||
525 peer->ibp_accepting != 0 ||
526 peer->ibp_passivewait);
530 kibnal_queue_tx_locked (kib_tx_t *tx, kib_conn_t *conn)
534 LASSERT (tx->tx_nwrq > 0); /* work items set up */
535 LASSERT (!tx->tx_queued); /* not queued for sending already */
538 tx->tx_deadline = jiffies + (*kibnal_tunables.kib_timeout * HZ);
540 if (tx->tx_conn == NULL) {
541 kibnal_conn_addref(conn);
543 LASSERT (tx->tx_msg->ibm_type != IBNAL_MSG_PUT_DONE);
545 LASSERT (tx->tx_conn == conn);
546 LASSERT (tx->tx_msg->ibm_type == IBNAL_MSG_PUT_DONE);
549 if (conn->ibc_version == IBNAL_MSG_VERSION_RDMAREPLYNOTRSRVD) {
550 /* All messages have simple credit control */
551 q = &conn->ibc_tx_queue;
553 LASSERT (conn->ibc_version == IBNAL_MSG_VERSION);
555 switch (tx->tx_msg->ibm_type) {
556 case IBNAL_MSG_PUT_REQ:
557 case IBNAL_MSG_GET_REQ:
558 /* RDMA request: reserve a buffer for the RDMA reply
560 q = &conn->ibc_tx_queue_rsrvd;
563 case IBNAL_MSG_PUT_NAK:
564 case IBNAL_MSG_PUT_ACK:
565 case IBNAL_MSG_PUT_DONE:
566 case IBNAL_MSG_GET_DONE:
567 /* RDMA reply/completion: no credits; peer has reserved
569 q = &conn->ibc_tx_queue_nocred;
573 case IBNAL_MSG_IMMEDIATE:
574 /* Otherwise: consume a credit before sending */
575 q = &conn->ibc_tx_queue;
584 list_add_tail(&tx->tx_list, q);
588 kibnal_send_keepalive(kib_conn_t *conn)
590 return (*kibnal_tunables.kib_keepalive > 0) &&
591 time_after(jiffies, conn->ibc_last_send +
592 *kibnal_tunables.kib_keepalive*HZ);
595 #define KIBNAL_SERVICE_KEY_MASK (IB_SERVICE_RECORD_COMP_SERVICENAME | \
596 IB_SERVICE_RECORD_COMP_SERVICEDATA8_1 | \
597 IB_SERVICE_RECORD_COMP_SERVICEDATA8_2 | \
598 IB_SERVICE_RECORD_COMP_SERVICEDATA8_3 | \
599 IB_SERVICE_RECORD_COMP_SERVICEDATA8_4 | \
600 IB_SERVICE_RECORD_COMP_SERVICEDATA8_5 | \
601 IB_SERVICE_RECORD_COMP_SERVICEDATA8_6 | \
602 IB_SERVICE_RECORD_COMP_SERVICEDATA8_7 | \
603 IB_SERVICE_RECORD_COMP_SERVICEDATA8_8)
606 kibnal_service_nid_field(IB_SERVICE_RECORD *srv)
608 /* must be consistent with KIBNAL_SERVICE_KEY_MASK */
609 return (__u64 *)srv->ServiceData8;
613 kibnal_set_service_keys(IB_SERVICE_RECORD *srv, lnet_nid_t nid)
615 char *svc_name = *kibnal_tunables.kib_service_name;
617 LASSERT (strlen(svc_name) < sizeof(srv->ServiceName));
618 memset (srv->ServiceName, 0, sizeof(srv->ServiceName));
619 strcpy (srv->ServiceName, svc_name);
621 *kibnal_service_nid_field(srv) = cpu_to_le64(nid);
624 /* CAVEAT EMPTOR: We rely on tx/rx descriptor alignment to allow us to use the
625 * lowest 2 bits of the work request id to stash the work item type (the op
626 * field is not valid when the wc completes in error). */
628 #define IBNAL_WID_TX 0
629 #define IBNAL_WID_RX 1
630 #define IBNAL_WID_RDMA 2
631 #define IBNAL_WID_MASK 3UL
634 kibnal_ptr2wreqid (void *ptr, int type)
636 unsigned long lptr = (unsigned long)ptr;
638 LASSERT ((lptr & IBNAL_WID_MASK) == 0);
639 LASSERT ((type & ~IBNAL_WID_MASK) == 0);
640 return (__u64)(lptr | type);
644 kibnal_wreqid2ptr (__u64 wreqid)
646 return (void *)(((unsigned long)wreqid) & ~IBNAL_WID_MASK);
650 kibnal_wreqid2type (__u64 wreqid)
652 return (wreqid & IBNAL_WID_MASK);
656 kibnal_set_conn_state (kib_conn_t *conn, int state)
658 CDEBUG(D_NET,"%p state %d\n", conn, state);
659 conn->ibc_state = state;
666 kibnal_rd_size (kib_rdma_desc_t *rd)
673 kibnal_rd_size (kib_rdma_desc_t *rd)
678 for (i = size = 0; i < rd->rd_nfrag; i++)
679 size += rd->rd_frags[i].rf_nob;
685 int kibnal_startup (lnet_ni_t *ni);
686 void kibnal_shutdown (lnet_ni_t *ni);
687 int kibnal_ctl(lnet_ni_t *ni, unsigned int cmd, void *arg);
688 int kibnal_send (lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg);
689 int kibnal_eager_recv (lnet_ni_t *ni, void *private,
690 lnet_msg_t *lntmsg, void **new_private);
691 int kibnal_recv (lnet_ni_t *ni, void *private, lnet_msg_t *msg,
692 int delayed, unsigned int niov,
693 struct iovec *iov, lnet_kiov_t *kiov,
694 unsigned int offset, unsigned int mlen, unsigned int rlen);
695 void kibnal_init_msg(kib_msg_t *msg, int type, int body_nob);
696 void kibnal_pack_msg(kib_msg_t *msg, __u32 version, int credits,
697 lnet_nid_t dstnid, __u64 dststamp, __u64 seq);
698 void kibnal_pack_connmsg(kib_msg_t *msg, __u32 version, int nob, int type,
699 lnet_nid_t dstnid, __u64 dststamp);
700 int kibnal_unpack_msg(kib_msg_t *msg, __u32 expected_version, int nob);
701 IB_HANDLE kibnal_create_cep(lnet_nid_t nid);
702 int kibnal_create_peer (kib_peer_t **peerp, lnet_nid_t nid);
703 void kibnal_destroy_peer (kib_peer_t *peer);
704 kib_peer_t *kibnal_find_peer_locked (lnet_nid_t nid);
705 int kibnal_del_peer (lnet_nid_t nid);
706 void kibnal_peer_alive (kib_peer_t *peer);
707 void kibnal_unlink_peer_locked (kib_peer_t *peer);
708 int kibnal_add_persistent_peer (lnet_nid_t nid);
709 int kibnal_close_stale_conns_locked (kib_peer_t *peer,
711 int kibnal_conn_rts(kib_conn_t *conn,
712 __u32 qpn, __u8 resp_res, __u8 init_depth, __u32 psn);
713 kib_conn_t *kibnal_create_conn (lnet_nid_t nid, int proto_version);
714 void kibnal_destroy_conn (kib_conn_t *conn);
715 void kibnal_listen_callback(IB_HANDLE cep, CM_CONN_INFO *info, void *arg);
716 int kibnal_alloc_pages (kib_pages_t **pp, int npages);
717 void kibnal_free_pages (kib_pages_t *p);
718 void kibnal_queue_tx (kib_tx_t *tx, kib_conn_t *conn);
719 void kibnal_txlist_done (struct list_head *txlist, int status);
720 int kibnal_post_receives (kib_conn_t *conn);
721 int kibnal_init_rdma (kib_tx_t *tx, int type, int nob,
722 kib_rdma_desc_t *dstrd, __u64 dstcookie);
723 void kibnal_check_sends (kib_conn_t *conn);
724 void kibnal_close_conn_locked (kib_conn_t *conn, int error);
725 int kibnal_thread_start (int (*fn)(void *arg), void *arg);
726 int kibnal_scheduler(void *arg);
727 int kibnal_connd (void *arg);
728 void kibnal_init_tx_msg (kib_tx_t *tx, int type, int body_nob);
729 void kibnal_close_conn (kib_conn_t *conn, int why);
730 void kibnal_start_active_rdma (int type, int status,
731 kib_rx_t *rx, lnet_msg_t *lntmsg,
733 struct iovec *iov, lnet_kiov_t *kiov,
734 unsigned int offset, unsigned int nob);
735 void kibnal_hca_async_callback (void *hca_arg, IB_EVENT_RECORD *ev);
736 void kibnal_hca_callback (void *hca_arg, void *cq_arg);
737 int kibnal_tunables_init (void);
738 void kibnal_tunables_fini (void);