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>
6 * Author: Frank Zago <fzago@systemfabricworks.com>
8 * This file is part of Lustre, http://www.lustre.org.
10 * Lustre is free software; you can redistribute it and/or
11 * modify it under the terms of version 2 of the GNU General Public
12 * License as published by the Free Software Foundation.
14 * Lustre is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with Lustre; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 # define EXPORT_SYMTAB
29 #include <linux/config.h>
30 #include <linux/module.h>
31 #include <linux/kernel.h>
33 #include <linux/string.h>
34 #include <linux/stat.h>
35 #include <linux/errno.h>
36 #include <linux/smp_lock.h>
37 #include <linux/unistd.h>
38 #include <linux/uio.h>
40 #include <asm/system.h>
41 #include <asm/uaccess.h>
44 #include <linux/init.h>
46 #include <linux/file.h>
47 #include <linux/stat.h>
48 #include <linux/list.h>
49 #include <linux/kmod.h>
50 #include <linux/sysctl.h>
51 #include <linux/random.h>
56 #define DEBUG_SUBSYSTEM S_NAL
58 #include <libcfs/kp30.h>
59 #include <portals/p30.h>
60 #include <portals/lib-p30.h>
61 #include <portals/nal.h>
63 /* CPU_{L,B}E #defines needed by Voltaire headers */
64 #include <asm/byteorder.h>
69 #ifdef __LITTLE_ENDIAN__
78 /* GCC 3.2.2, miscompiles this driver.
79 * See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=9853. */
80 #define GCC_VERSION ((__GNUC__*100 + __GNUC_MINOR__)*100 + __GNUC_PATCHLEVEL__)
81 #if (GCC_VERSION >= 30000) && (GCC_VERSION < 30203)
82 # error Invalid GCC version. Must use GCC < 3.0.0 || GCC >= 3.2.3
86 # define IBNAL_N_SCHED num_online_cpus() /* # schedulers */
88 # define IBNAL_N_SCHED 1 /* # schedulers */
91 /* sdp-connection.c */
93 #define IBNAL_PKEY 0xffff
94 #define IBNAL_PKEY_IDX 0
95 #define IBNAL_SGID_IDX 0
96 #define IBNAL_SERVICE_LEVEL 0
97 #define IBNAL_STATIC_RATE 0
98 #define IBNAL_RETRY_CNT 7
99 #define IBNAL_RNR_CNT 6
100 #define IBNAL_EE_FLOW_CNT 1
101 #define IBNAL_LOCAL_SUB 1
102 #define IBNAL_TRAFFIC_CLASS 0
103 #define IBNAL_SOURCE_PATH_BIT 0
104 #define IBNAL_OUS_DST_RD 1
105 #define IBNAL_IB_MTU vv_mtu_1024
107 /* sdp-hca-params.h */
108 #define PATH_RATE_2_5GB 2
111 #define IBNAL_R_2_STATIC_RATE(r) ((r) == PATH_RATE_2_5GB ? MLX_IPD_1x : MLX_IPD_4x)
113 /* other low-level IB constants */
114 #define IBNAL_LOCAL_ACK_TIMEOUT 0x12
115 #define IBNAL_RNR_NAK_TIMER 0x10
116 #define IBNAL_PKT_LIFETIME 5
117 #define IBNAL_ARB_INITIATOR_DEPTH 0
118 #define IBNAL_ARB_RESP_RES 0
119 #define IBNAL_FAILOVER_ACCEPTED 0
120 #define IBNAL_SERVICE_NUMBER 0x11b9a2 /* Fixed service number */
122 #define IBNAL_MIN_RECONNECT_INTERVAL HZ /* first failed connection retry... */
123 #define IBNAL_MAX_RECONNECT_INTERVAL (60*HZ) /* ...exponentially increasing to this */
125 #define IBNAL_MSG_SIZE (4<<10) /* max size of queued messages (inc hdr) */
127 #define IBNAL_MSG_QUEUE_SIZE 8 /* # messages/RDMAs in-flight */
128 #define IBNAL_CREDIT_HIGHWATER 7 /* when to eagerly return credits */
130 #define IBNAL_ARP_RETRIES 3 /* How many times to retry ARP */
132 #define IBNAL_NTX 32 /* # tx descs */
133 #define IBNAL_NTX_NBLK 256 /* # reserved tx descs */
135 #define IBNAL_PEER_HASH_SIZE 101 /* # peer lists */
137 #define IBNAL_RESCHED 100 /* # scheduler loops before reschedule */
139 #define IBNAL_CONCURRENT_PEERS 1000 /* # nodes all talking at once to me */
141 #define IBNAL_CKSUM 0
143 /* default vals for runtime tunables */
144 #define IBNAL_IO_TIMEOUT 50 /* default comms timeout (seconds) */
146 /************************/
147 /* derived constants... */
149 /* TX messages (shared by all connections) */
150 #define IBNAL_TX_MSGS (IBNAL_NTX + IBNAL_NTX_NBLK)
151 #define IBNAL_TX_MSG_BYTES (IBNAL_TX_MSGS * IBNAL_MSG_SIZE)
152 #define IBNAL_TX_MSG_PAGES ((IBNAL_TX_MSG_BYTES + PAGE_SIZE - 1)/PAGE_SIZE)
154 #define IBNAL_USE_FMR 1
157 # define IBNAL_MAX_RDMA_FRAGS 1
158 # define IBNAL_FMR_NMAPS 1000
160 # define IBNAL_MAX_RDMA_FRAGS PTL_MD_MAX_IOV
163 /* RX messages (per connection) */
164 #define IBNAL_RX_MSGS IBNAL_MSG_QUEUE_SIZE
165 #define IBNAL_RX_MSG_BYTES (IBNAL_RX_MSGS * IBNAL_MSG_SIZE)
166 #define IBNAL_RX_MSG_PAGES ((IBNAL_RX_MSG_BYTES + PAGE_SIZE - 1)/PAGE_SIZE)
168 #define IBNAL_CQ_ENTRIES (IBNAL_TX_MSGS * (1 + IBNAL_MAX_RDMA_FRAGS) + \
169 IBNAL_RX_MSGS * IBNAL_CONCURRENT_PEERS)
173 int kib_io_timeout; /* comms timeout (seconds) */
174 struct ctl_table_header *kib_sysctl; /* sysctl interface */
179 int ibp_npages; /* # pages */
180 struct page *ibp_pages[0];
186 vv_fmr_h_t md_fmrhandle; /* FMR handle */
187 int md_fmrcount; /* # mappings left */
188 int md_active; /* mapping in use? */
189 __u32 md_lkey; /* local key */
190 __u32 md_rkey; /* remote key */
191 __u64 md_addr; /* IO VM address */
197 int kib_init; /* initialisation state */
198 __u64 kib_incarnation; /* which one am I */
199 int kib_shutdown; /* shut down? */
200 atomic_t kib_nthreads; /* # live threads */
202 __u64 kib_svc_id; /* service number I listen on */
203 vv_gid_t kib_port_gid; /* device/port GID */
204 vv_p_key_t kib_port_pkey; /* device/port pkey */
206 struct semaphore kib_nid_mutex; /* serialise NID ops */
207 cm_cep_handle_t kib_listen_handle; /* IB listen handle */
209 rwlock_t kib_global_lock; /* stabilize peer/conn ops */
210 spinlock_t kib_vverbs_lock; /* serialize vverbs calls */
211 int kib_ready; /* CQ callback fired */
212 int kib_checking_cq; /* a scheduler is checking the CQ */
214 struct list_head *kib_peers; /* hash table of all my known peers */
215 int kib_peer_hash_size; /* size of kib_peers */
216 atomic_t kib_npeers; /* # peers extant */
217 atomic_t kib_nconns; /* # connections extant */
219 void *kib_connd; /* the connd task (serialisation assertions) */
220 struct list_head kib_connd_peers; /* peers wanting to get connected */
221 struct list_head kib_connd_pcreqs; /* passive connection requests */
222 struct list_head kib_connd_conns; /* connections to setup/teardown */
223 struct list_head kib_connd_zombies; /* connections with zero refcount */
224 wait_queue_head_t kib_connd_waitq; /* connection daemon sleeps here */
225 spinlock_t kib_connd_lock; /* serialise */
227 wait_queue_head_t kib_sched_waitq; /* schedulers sleep here */
228 struct list_head kib_sched_txq; /* tx requiring attention */
229 struct list_head kib_sched_rxq; /* rx requiring attention */
230 spinlock_t kib_sched_lock; /* serialise */
232 struct kib_tx *kib_tx_descs; /* all the tx descriptors */
233 kib_pages_t *kib_tx_pages; /* premapped tx msg pages */
235 struct list_head kib_idle_txs; /* idle tx descriptors */
236 struct list_head kib_idle_nblk_txs; /* idle reserved tx descriptors */
237 wait_queue_head_t kib_idle_tx_waitq; /* block here for tx descriptor */
238 __u64 kib_next_tx_cookie; /* RDMA completion cookie */
239 spinlock_t kib_tx_lock; /* serialise */
241 vv_hca_h_t kib_hca; /* The HCA */
242 vv_hca_attrib_t kib_hca_attrs; /* its properties */
243 int kib_port; /* port on the device */
244 vv_port_attrib_t kib_port_attr; /* its properties */
246 vv_pd_h_t kib_pd; /* protection domain */
247 vv_cq_h_t kib_cq; /* completion queue */
251 #define IBNAL_INIT_NOTHING 0
252 #define IBNAL_INIT_DATA 1
253 #define IBNAL_INIT_LIB 2
254 #define IBNAL_INIT_HCA 3
255 #define IBNAL_INIT_ASYNC 4
256 #define IBNAL_INIT_PD 5
257 #define IBNAL_INIT_TXD 6
258 #define IBNAL_INIT_CQ 7
259 #define IBNAL_INIT_ALL 8
261 #include "vibnal_wire.h"
263 /***********************************************************************/
265 typedef struct kib_rx /* receive message */
267 struct list_head rx_list; /* queue for attention */
268 struct kib_conn *rx_conn; /* owning conn */
269 int rx_responded; /* responded to peer? */
270 int rx_posted; /* posted? */
271 vv_l_key_t rx_lkey; /* local key */
272 kib_msg_t *rx_msg; /* pre-mapped buffer (host vaddr) */
273 vv_wr_t rx_wrq; /* receive work item */
274 vv_scatgat_t rx_gl; /* and its memory */
277 typedef struct kib_tx /* transmit message */
279 struct list_head tx_list; /* queue on idle_txs ibc_tx_queue etc. */
280 int tx_isnblk; /* I'm reserved for non-blocking sends */
281 struct kib_conn *tx_conn; /* owning conn */
282 int tx_sending; /* # tx callbacks outstanding */
283 int tx_queued; /* queued for sending */
284 int tx_waiting; /* waiting for peer */
285 int tx_status; /* completion status */
286 unsigned long tx_deadline; /* completion deadline */
287 __u64 tx_cookie; /* completion cookie */
288 lib_msg_t *tx_libmsg[2]; /* lib msgs to finalize on completion */
289 vv_l_key_t tx_lkey; /* local key for message buffer */
290 kib_msg_t *tx_msg; /* message buffer (host vaddr) */
291 int tx_nwrq; /* # send work items */
293 vv_wr_t tx_wrq[2]; /* send work items... */
294 vv_scatgat_t tx_gl[2]; /* ...and their memory */
295 kib_rdma_desc_t tx_rd[1]; /* rdma descriptor */
296 kib_md_t tx_md; /* FMA mapping descriptor */
297 __u64 *tx_pages; /* page array for mapping */
299 vv_wr_t *tx_wrq; /* send work items... */
300 vv_scatgat_t *tx_gl; /* ...and their memory */
301 kib_rdma_desc_t *tx_rd; /* rdma descriptor (src buffers) */
305 #define KIB_TX_UNMAPPED 0
306 #define KIB_TX_MAPPED 1
308 /* Passive connection request (listener callback) queued for handling by connd */
309 typedef struct kib_pcreq
311 struct list_head pcr_list; /* queue for handling by connd */
312 cm_cep_handle_t pcr_cep; /* listening handle */
313 cm_request_data_t pcr_cmreq; /* request data */
316 typedef struct kib_connvars
318 /* connection-in-progress variables */
327 ib_path_record_v2_t cv_path;
328 ibat_arp_data_t cv_arp;
329 ibat_stat_t cv_arprc;
330 cm_conn_data_t cv_conndata;
333 typedef struct kib_conn
335 struct kib_peer *ibc_peer; /* owning peer */
336 struct list_head ibc_list; /* stash on peer's conn list */
337 __u64 ibc_incarnation; /* which instance of the peer */
338 __u64 ibc_txseq; /* tx sequence number */
339 __u64 ibc_rxseq; /* rx sequence number */
340 atomic_t ibc_refcount; /* # users */
341 int ibc_state; /* what's happening */
342 atomic_t ibc_nob; /* # bytes buffered */
343 int ibc_nsends_posted; /* # uncompleted sends */
344 int ibc_credits; /* # credits I have */
345 int ibc_outstanding_credits; /* # credits to return */
346 int ibc_disconnect; /* some disconnect callback fired */
347 int ibc_comms_error; /* set on comms error */
348 struct list_head ibc_early_rxs; /* rxs completed before ESTABLISHED */
349 struct list_head ibc_tx_queue; /* send queue */
350 struct list_head ibc_active_txs; /* active tx awaiting completion */
351 spinlock_t ibc_lock; /* serialise */
352 kib_rx_t *ibc_rxs; /* the rx descs */
353 kib_pages_t *ibc_rx_pages; /* premapped rx msg pages */
354 vv_qp_h_t ibc_qp; /* queue pair */
355 cm_cep_handle_t ibc_cep; /* connection endpoint */
356 kib_connvars_t *ibc_connvars; /* in-progress connection state */
359 #define IBNAL_CONN_INIT_NOTHING 0 /* incomplete init */
360 #define IBNAL_CONN_INIT_QP 1 /* QP allocated */
361 #define IBNAL_CONN_INIT 2 /* completed init */
362 #define IBNAL_CONN_ACTIVE_ARP 3 /* active arping */
363 #define IBNAL_CONN_ACTIVE_CONNECT 4 /* active sending req */
364 #define IBNAL_CONN_ACTIVE_CHECK_REPLY 5 /* active checking reply */
365 #define IBNAL_CONN_ACTIVE_RTU 6 /* active sending rtu */
366 #define IBNAL_CONN_PASSIVE_WAIT 7 /* passive waiting for rtu */
367 #define IBNAL_CONN_ESTABLISHED 8 /* connection established */
368 #define IBNAL_CONN_DISCONNECT1 9 /* disconnect phase 1 */
369 #define IBNAL_CONN_DISCONNECT2 10 /* disconnect phase 2 */
370 #define IBNAL_CONN_DISCONNECTED 11 /* disconnect complete */
372 typedef struct kib_peer
374 struct list_head ibp_list; /* stash on global peer list */
375 struct list_head ibp_connd_list; /* schedule on kib_connd_peers */
376 ptl_nid_t ibp_nid; /* who's on the other end(s) */
377 __u32 ibp_ip; /* IP to query for peer conn params */
378 int ibp_port; /* port to qery for peer conn params */
379 __u64 ibp_incarnation; /* peer's incarnation */
380 atomic_t ibp_refcount; /* # users */
381 int ibp_persistence; /* "known" peer refs */
382 struct list_head ibp_conns; /* all active connections */
383 struct list_head ibp_tx_queue; /* msgs waiting for a conn */
384 int ibp_connecting; /* connecting+accepting */
385 int ibp_arp_count; /* # arp attempts */
386 unsigned long ibp_reconnect_time; /* when reconnect may be attempted */
387 unsigned long ibp_reconnect_interval; /* exponential backoff */
391 extern lib_nal_t kibnal_lib;
392 extern kib_data_t kibnal_data;
393 extern kib_tunables_t kibnal_tunables;
395 extern void kibnal_init_msg(kib_msg_t *msg, int type, int body_nob);
396 extern void kibnal_pack_msg(kib_msg_t *msg, int credits, ptl_nid_t dstnid,
397 __u64 dststamp, __u64 seq);
398 extern int kibnal_unpack_msg(kib_msg_t *msg, int nob);
399 extern kib_peer_t *kibnal_create_peer(ptl_nid_t nid);
400 extern void kibnal_destroy_peer(kib_peer_t *peer);
401 extern int kibnal_del_peer(ptl_nid_t nid, int single_share);
402 extern kib_peer_t *kibnal_find_peer_locked(ptl_nid_t nid);
403 extern void kibnal_unlink_peer_locked(kib_peer_t *peer);
404 extern int kibnal_close_stale_conns_locked(kib_peer_t *peer,
406 extern kib_conn_t *kibnal_create_conn(cm_cep_handle_t cep);
407 extern void kibnal_listen_callback(cm_cep_handle_t cep, cm_conn_data_t *info, void *arg);
409 extern int kibnal_alloc_pages(kib_pages_t **pp, int npages, int access);
410 extern void kibnal_free_pages(kib_pages_t *p);
412 extern void kibnal_check_sends(kib_conn_t *conn);
413 extern void kibnal_close_conn_locked(kib_conn_t *conn, int error);
414 extern void kibnal_destroy_conn(kib_conn_t *conn);
415 extern int kibnal_thread_start(int (*fn)(void *arg), void *arg);
416 extern int kibnal_scheduler(void *arg);
417 extern int kibnal_connd(void *arg);
418 extern void kibnal_init_tx_msg(kib_tx_t *tx, int type, int body_nob);
419 extern void kibnal_close_conn(kib_conn_t *conn, int why);
420 extern int kibnal_set_qp_state(kib_conn_t *conn, vv_qp_state_t new_state);
421 extern void kibnal_async_callback(vv_event_record_t ev);
422 extern void kibnal_cq_callback(unsigned long context);
423 extern void kibnal_passive_connreq(kib_pcreq_t *pcr, int reject);
424 extern void kibnal_pause(int ticks);
425 extern void kibnal_queue_tx(kib_tx_t *tx, kib_conn_t *conn);
426 extern int kibnal_init_rdma(kib_tx_t *tx, int type, int nob,
427 kib_rdma_desc_t *dstrd, __u64 dstcookie);
430 wrq_signals_completion (vv_wr_t *wrq)
432 return wrq->completion_notification != 0;
435 #define kibnal_conn_addref(conn) \
437 CDEBUG(D_NET, "conn[%p] (%d)++\n", \
438 (conn), atomic_read(&(conn)->ibc_refcount)); \
439 LASSERT(atomic_read(&(conn)->ibc_refcount) > 0); \
440 atomic_inc(&(conn)->ibc_refcount); \
443 #define kibnal_conn_decref(conn) \
445 unsigned long flags; \
447 CDEBUG(D_NET, "conn[%p] (%d)--\n", \
448 (conn), atomic_read(&(conn)->ibc_refcount)); \
449 LASSERT(atomic_read(&(conn)->ibc_refcount) > 0); \
450 if (atomic_dec_and_test(&(conn)->ibc_refcount)) { \
451 spin_lock_irqsave(&kibnal_data.kib_connd_lock, flags); \
452 list_add_tail(&(conn)->ibc_list, \
453 &kibnal_data.kib_connd_zombies); \
454 wake_up(&kibnal_data.kib_connd_waitq); \
455 spin_unlock_irqrestore(&kibnal_data.kib_connd_lock, flags); \
459 #define kibnal_peer_addref(peer) \
461 CDEBUG(D_NET, "peer[%p] -> "LPX64" (%d)++\n", \
462 (peer), (peer)->ibp_nid, \
463 atomic_read (&(peer)->ibp_refcount)); \
464 LASSERT(atomic_read(&(peer)->ibp_refcount) > 0); \
465 atomic_inc(&(peer)->ibp_refcount); \
468 #define kibnal_peer_decref(peer) \
470 CDEBUG(D_NET, "peer[%p] -> "LPX64" (%d)--\n", \
471 (peer), (peer)->ibp_nid, \
472 atomic_read (&(peer)->ibp_refcount)); \
473 LASSERT(atomic_read(&(peer)->ibp_refcount) > 0); \
474 if (atomic_dec_and_test(&(peer)->ibp_refcount)) \
475 kibnal_destroy_peer(peer); \
478 static inline struct list_head *
479 kibnal_nid2peerlist (ptl_nid_t nid)
481 unsigned int hash = ((unsigned int)nid) % kibnal_data.kib_peer_hash_size;
483 return (&kibnal_data.kib_peers [hash]);
487 kibnal_peer_active (kib_peer_t *peer)
489 /* Am I in the peer hash table? */
490 return (!list_empty(&peer->ibp_list));
494 kibnal_queue_tx_locked (kib_tx_t *tx, kib_conn_t *conn)
496 /* CAVEAT EMPTOR: tx takes caller's ref on conn */
498 LASSERT (tx->tx_nwrq > 0); /* work items set up */
499 LASSERT (!tx->tx_queued); /* not queued for sending already */
501 if (tx->tx_conn == NULL) {
502 kibnal_conn_addref(conn);
505 LASSERT (tx->tx_conn == conn);
506 LASSERT (tx->tx_msg->ibm_type == IBNAL_MSG_PUT_DONE);
509 tx->tx_deadline = jiffies + kibnal_tunables.kib_io_timeout * HZ;
510 list_add_tail(&tx->tx_list, &conn->ibc_tx_queue);
514 kibnal_page2phys (struct page *p)
516 #if IBNAL_32BIT_PAGE2PHYS
517 CLASSERT (sizeof(typeof(page_to_phys(p))) == 4);
518 CLASSERT (sizeof(unsigned long) == 4);
519 /* page_to_phys returns a 32 bit physical address. This must be a 32
520 * bit machine with <= 4G memory and we must ensure we don't sign
521 * extend when converting to 64 bits. */
522 return (unsigned long)page_to_phys(p);
524 CLASSERT (sizeof(typeof(page_to_phys(p))) == 8);
525 /* page_to_phys returns a 64 bit physical address :) */
526 return page_to_phys(p);
530 #if IBNAL_VOIDSTAR_SGADDR
532 # if CONFIG_X86 && CONFIG_HIGHMEM4G
533 /* truncation to void* doesn't matter if 0 <= physmem < 4G
534 * so allow x86 with 32 bit phys addrs */
536 /* OK anyway on 64-bit arch */
538 # error "Can't support HIGHMEM when vv_scatgat_t::v_address is void *"
541 # define KIBNAL_ADDR2SG(a) ((void *)((unsigned long)(a)))
542 # define KIBNAL_SG2ADDR(a) ((__u64)((unsigned long)(a)))
543 static inline __u64 kibnal_addr2net (__u64 addr)
546 vv_return_t vvrc = vv_va2advertise_addr(kibnal_data.kib_hca,
547 KIBNAL_ADDR2SG(addr),
549 LASSERT (vvrc == vv_return_ok);
550 return KIBNAL_SG2ADDR(netaddr);
553 # define KIBNAL_ADDR2SG(a) a
554 # define KIBNAL_SG2ADDR(a) a
555 static inline __u64 kibnal_addr2net (__u64 addr)
558 vv_return_t vvrc = vv_va2advertise_addr(kibnal_data.kib_hca,
561 LASSERT (vvrc == vv_return_ok);
566 /* CAVEAT EMPTOR: We rely on tx/rx descriptor alignment to allow us to use the
567 * lowest 2 bits of the work request id to stash the work item type (the op
568 * field is not valid when the wc completes in error). */
570 #define IBNAL_WID_TX 0
571 #define IBNAL_WID_RX 1
572 #define IBNAL_WID_RDMA 2
573 #define IBNAL_WID_MASK 3UL
575 static inline vv_wr_id_t
576 kibnal_ptr2wreqid (void *ptr, int type)
578 unsigned long lptr = (unsigned long)ptr;
580 LASSERT ((lptr & IBNAL_WID_MASK) == 0);
581 LASSERT ((type & ~IBNAL_WID_MASK) == 0);
582 return (vv_wr_id_t)(lptr | type);
586 kibnal_wreqid2ptr (vv_wr_id_t wreqid)
588 return (void *)(((unsigned long)wreqid) & ~IBNAL_WID_MASK);
592 kibnal_wreqid2type (vv_wr_id_t wreqid)
594 return (wreqid & IBNAL_WID_MASK);
598 kibnal_set_conn_state (kib_conn_t *conn, int state)
600 conn->ibc_state = state;
607 kibnal_rd_size (kib_rdma_desc_t *rd)
614 kibnal_rf_addr (kib_rdma_frag_t *rf)
616 return (((__u64)rf->rf_addr_hi)<<32) | ((__u64)rf->rf_addr_lo);
620 kibnal_rf_set (kib_rdma_frag_t *rf, __u64 addr, int nob)
622 rf->rf_addr_lo = addr & 0xffffffff;
623 rf->rf_addr_hi = (addr >> 32) & 0xffffffff;
628 kibnal_rd_size (kib_rdma_desc_t *rd)
633 for (i = size = 0; i < rd->rd_nfrag; i++)
634 size += rd->rd_frags[i].rf_nob;