2 * Copyright (C) 2002-2004 Cluster File Systems, Inc.
3 * Author: Eric Barton <eric@bartonsoftware.com>
5 * This file is part of Portals, http://www.lustre.org
7 * Portals is free software; you can redistribute it and/or
8 * modify it under the terms of version 2 of the GNU General Public
9 * License as published by the Free Software Foundation.
11 * Portals is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with Portals; if not, write to the Free Software
18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 kqswnal_data_t kqswnal_data;
26 ptl_handle_ni_t kqswnal_ni;
27 kqswnal_tunables_t kqswnal_tunables;
29 kpr_nal_interface_t kqswnal_router_interface = {
32 kprni_fwd: kqswnal_fwd_packet,
33 kprni_notify: NULL, /* we're connectionless */
37 #define QSWNAL_SYSCTL 201
39 #define QSWNAL_SYSCTL_OPTIMIZED_GETS 1
40 #define QSWNAL_SYSCTL_OPTIMIZED_PUTS 2
42 static ctl_table kqswnal_ctl_table[] = {
43 {QSWNAL_SYSCTL_OPTIMIZED_PUTS, "optimized_puts",
44 &kqswnal_tunables.kqn_optimized_puts, sizeof (int),
45 0644, NULL, &proc_dointvec},
46 {QSWNAL_SYSCTL_OPTIMIZED_GETS, "optimized_gets",
47 &kqswnal_tunables.kqn_optimized_gets, sizeof (int),
48 0644, NULL, &proc_dointvec},
52 static ctl_table kqswnal_top_ctl_table[] = {
53 {QSWNAL_SYSCTL, "qswnal", NULL, 0, 0555, kqswnal_ctl_table},
59 kqswnal_get_tx_desc (struct portals_cfg *pcfg)
62 struct list_head *tmp;
65 int index = pcfg->pcfg_count;
68 spin_lock_irqsave (&kqswnal_data.kqn_idletxd_lock, flags);
70 list_for_each (tmp, &kqswnal_data.kqn_activetxds) {
74 ktx = list_entry (tmp, kqswnal_tx_t, ktx_list);
75 hdr = (ptl_hdr_t *)ktx->ktx_buffer;
77 pcfg->pcfg_pbuf1 = (char *)ktx;
78 pcfg->pcfg_count = le32_to_cpu(hdr->type);
79 pcfg->pcfg_size = le32_to_cpu(hdr->payload_length);
80 pcfg->pcfg_nid = le64_to_cpu(hdr->dest_nid);
81 pcfg->pcfg_nid2 = ktx->ktx_nid;
82 pcfg->pcfg_misc = ktx->ktx_launcher;
83 pcfg->pcfg_flags = (list_empty (&ktx->ktx_delayed_list) ? 0 : 1) |
84 (!ktx->ktx_isnblk ? 0 : 2) |
85 (ktx->ktx_state << 2);
90 spin_unlock_irqrestore (&kqswnal_data.kqn_idletxd_lock, flags);
95 kqswnal_cmd (struct portals_cfg *pcfg, void *private)
97 LASSERT (pcfg != NULL);
99 switch (pcfg->pcfg_command) {
100 case NAL_CMD_GET_TXDESC:
101 return (kqswnal_get_tx_desc (pcfg));
103 case NAL_CMD_REGISTER_MYNID:
104 CDEBUG (D_IOCTL, "setting NID offset to "LPX64" (was "LPX64")\n",
105 pcfg->pcfg_nid - kqswnal_data.kqn_elanid,
106 kqswnal_data.kqn_nid_offset);
107 kqswnal_data.kqn_nid_offset =
108 pcfg->pcfg_nid - kqswnal_data.kqn_elanid;
109 kqswnal_lib.libnal_ni.ni_pid.nid = pcfg->pcfg_nid;
118 kqswnal_shutdown(nal_t *nal)
125 /* NB The first ref was this module! */
126 if (nal->nal_refct != 0) {
131 CDEBUG (D_NET, "shutdown\n");
132 LASSERT (nal == &kqswnal_api);
134 switch (kqswnal_data.kqn_init)
140 libcfs_nal_cmd_unregister(QSWNAL);
150 case KQN_INIT_NOTHING:
154 /**********************************************************************/
155 /* Tell router we're shutting down. Any router calls my threads
156 * make will now fail immediately and the router will stop calling
158 kpr_shutdown (&kqswnal_data.kqn_router);
160 /**********************************************************************/
161 /* Signal the start of shutdown... */
162 spin_lock_irqsave(&kqswnal_data.kqn_idletxd_lock, flags);
163 kqswnal_data.kqn_shuttingdown = 1;
164 spin_unlock_irqrestore(&kqswnal_data.kqn_idletxd_lock, flags);
166 wake_up_all(&kqswnal_data.kqn_idletxd_waitq);
168 /**********************************************************************/
169 /* wait for sends that have allocated a tx desc to launch or give up */
170 while (atomic_read (&kqswnal_data.kqn_pending_txs) != 0) {
171 CDEBUG(D_NET, "waiting for %d pending sends\n",
172 atomic_read (&kqswnal_data.kqn_pending_txs));
173 set_current_state (TASK_UNINTERRUPTIBLE);
174 schedule_timeout (HZ);
177 /**********************************************************************/
178 /* close elan comms */
180 /* Shut down receivers first; rx callbacks might try sending... */
181 if (kqswnal_data.kqn_eprx_small != NULL)
182 ep_free_rcvr (kqswnal_data.kqn_eprx_small);
184 if (kqswnal_data.kqn_eprx_large != NULL)
185 ep_free_rcvr (kqswnal_data.kqn_eprx_large);
187 /* NB ep_free_rcvr() returns only after we've freed off all receive
188 * buffers (see shutdown handling in kqswnal_requeue_rx()). This
189 * means we must have completed any messages we passed to
190 * lib_parse() or kpr_fwd_start(). */
192 if (kqswnal_data.kqn_eptx != NULL)
193 ep_free_xmtr (kqswnal_data.kqn_eptx);
195 /* NB ep_free_xmtr() returns only after all outstanding transmits
196 * have called their callback... */
197 LASSERT(list_empty(&kqswnal_data.kqn_activetxds));
199 /* "Old" EKC just pretends to shutdown cleanly but actually
200 * provides no guarantees */
201 if (kqswnal_data.kqn_eprx_small != NULL)
202 ep_remove_large_rcvr (kqswnal_data.kqn_eprx_small);
204 if (kqswnal_data.kqn_eprx_large != NULL)
205 ep_remove_large_rcvr (kqswnal_data.kqn_eprx_large);
207 /* wait for transmits to complete */
208 while (!list_empty(&kqswnal_data.kqn_activetxds)) {
209 CWARN("waiting for active transmits to complete\n");
210 set_current_state(TASK_UNINTERRUPTIBLE);
211 schedule_timeout(HZ);
214 if (kqswnal_data.kqn_eptx != NULL)
215 ep_free_large_xmtr (kqswnal_data.kqn_eptx);
217 /**********************************************************************/
218 /* flag threads to terminate, wake them and wait for them to die */
219 kqswnal_data.kqn_shuttingdown = 2;
220 wake_up_all (&kqswnal_data.kqn_sched_waitq);
222 while (atomic_read (&kqswnal_data.kqn_nthreads) != 0) {
223 CDEBUG(D_NET, "waiting for %d threads to terminate\n",
224 atomic_read (&kqswnal_data.kqn_nthreads));
225 set_current_state (TASK_UNINTERRUPTIBLE);
226 schedule_timeout (HZ);
229 /**********************************************************************/
230 /* No more threads. No more portals, router or comms callbacks!
231 * I control the horizontals and the verticals...
235 LASSERT (list_empty (&kqswnal_data.kqn_readyrxds));
236 LASSERT (list_empty (&kqswnal_data.kqn_delayedtxds));
237 LASSERT (list_empty (&kqswnal_data.kqn_delayedfwds));
240 /**********************************************************************/
241 /* Complete any blocked forwarding packets, with error
244 while (!list_empty (&kqswnal_data.kqn_idletxd_fwdq))
246 kpr_fwd_desc_t *fwd = list_entry (kqswnal_data.kqn_idletxd_fwdq.next,
247 kpr_fwd_desc_t, kprfd_list);
248 list_del (&fwd->kprfd_list);
249 kpr_fwd_done (&kqswnal_data.kqn_router, fwd, -ESHUTDOWN);
252 /**********************************************************************/
253 /* finalise router and portals lib */
255 kpr_deregister (&kqswnal_data.kqn_router);
258 lib_fini (&kqswnal_lib);
260 /**********************************************************************/
261 /* Unmap message buffers and free all descriptors and buffers
265 /* FTTB, we need to unmap any remaining mapped memory. When
266 * ep_dvma_release() get fixed (and releases any mappings in the
267 * region), we can delete all the code from here --------> */
269 for (ktx = kqswnal_data.kqn_txds; ktx != NULL; ktx = ktx->ktx_alloclist) {
270 /* If ktx has a buffer, it got mapped; unmap now. NB only
271 * the pre-mapped stuff is still mapped since all tx descs
274 if (ktx->ktx_buffer != NULL)
275 ep_dvma_unload(kqswnal_data.kqn_ep,
276 kqswnal_data.kqn_ep_tx_nmh,
280 for (krx = kqswnal_data.kqn_rxds; krx != NULL; krx = krx->krx_alloclist) {
281 /* If krx_kiov[0].kiov_page got allocated, it got mapped.
282 * NB subsequent pages get merged */
284 if (krx->krx_kiov[0].kiov_page != NULL)
285 ep_dvma_unload(kqswnal_data.kqn_ep,
286 kqswnal_data.kqn_ep_rx_nmh,
287 &krx->krx_elanbuffer);
289 /* <----------- to here */
291 if (kqswnal_data.kqn_ep_rx_nmh != NULL)
292 ep_dvma_release(kqswnal_data.kqn_ep, kqswnal_data.kqn_ep_rx_nmh);
294 if (kqswnal_data.kqn_ep_tx_nmh != NULL)
295 ep_dvma_release(kqswnal_data.kqn_ep, kqswnal_data.kqn_ep_tx_nmh);
297 if (kqswnal_data.kqn_eprxdmahandle != NULL)
299 elan3_dvma_unload(kqswnal_data.kqn_ep->DmaState,
300 kqswnal_data.kqn_eprxdmahandle, 0,
301 KQSW_NRXMSGPAGES_SMALL * KQSW_NRXMSGS_SMALL +
302 KQSW_NRXMSGPAGES_LARGE * KQSW_NRXMSGS_LARGE);
304 elan3_dma_release(kqswnal_data.kqn_ep->DmaState,
305 kqswnal_data.kqn_eprxdmahandle);
308 if (kqswnal_data.kqn_eptxdmahandle != NULL)
310 elan3_dvma_unload(kqswnal_data.kqn_ep->DmaState,
311 kqswnal_data.kqn_eptxdmahandle, 0,
312 KQSW_NTXMSGPAGES * (KQSW_NTXMSGS +
315 elan3_dma_release(kqswnal_data.kqn_ep->DmaState,
316 kqswnal_data.kqn_eptxdmahandle);
320 while (kqswnal_data.kqn_txds != NULL) {
321 ktx = kqswnal_data.kqn_txds;
323 if (ktx->ktx_buffer != NULL)
324 PORTAL_FREE(ktx->ktx_buffer, KQSW_TX_BUFFER_SIZE);
326 kqswnal_data.kqn_txds = ktx->ktx_alloclist;
327 PORTAL_FREE(ktx, sizeof(*ktx));
330 while (kqswnal_data.kqn_rxds != NULL) {
333 krx = kqswnal_data.kqn_rxds;
334 for (i = 0; i < krx->krx_npages; i++)
335 if (krx->krx_kiov[i].kiov_page != NULL)
336 __free_page (krx->krx_kiov[i].kiov_page);
338 kqswnal_data.kqn_rxds = krx->krx_alloclist;
339 PORTAL_FREE(krx, sizeof (*krx));
342 /* resets flags, pointers to NULL etc */
343 memset(&kqswnal_data, 0, sizeof (kqswnal_data));
345 CDEBUG (D_MALLOC, "done kmem %d\n", atomic_read(&portal_kmemory));
347 printk (KERN_INFO "Lustre: Routing QSW NAL unloaded (final mem %d)\n",
348 atomic_read(&portal_kmemory));
352 kqswnal_startup (nal_t *nal, ptl_pid_t requested_pid,
353 ptl_ni_limits_t *requested_limits,
354 ptl_ni_limits_t *actual_limits)
357 EP_RAILMASK all_rails = EP_RAILMASK_ALL;
359 ELAN3_DMA_REQUEST dmareq;
366 ptl_process_id_t my_process_id;
367 int pkmem = atomic_read(&portal_kmemory);
369 LASSERT (nal == &kqswnal_api);
371 if (nal->nal_refct != 0) {
372 if (actual_limits != NULL)
373 *actual_limits = kqswnal_lib.libnal_ni.ni_actual_limits;
374 /* This module got the first ref */
379 LASSERT (kqswnal_data.kqn_init == KQN_INIT_NOTHING);
381 CDEBUG (D_MALLOC, "start kmem %d\n", atomic_read(&portal_kmemory));
383 /* ensure all pointers NULL etc */
384 memset (&kqswnal_data, 0, sizeof (kqswnal_data));
386 INIT_LIST_HEAD (&kqswnal_data.kqn_idletxds);
387 INIT_LIST_HEAD (&kqswnal_data.kqn_nblk_idletxds);
388 INIT_LIST_HEAD (&kqswnal_data.kqn_activetxds);
389 spin_lock_init (&kqswnal_data.kqn_idletxd_lock);
390 init_waitqueue_head (&kqswnal_data.kqn_idletxd_waitq);
391 INIT_LIST_HEAD (&kqswnal_data.kqn_idletxd_fwdq);
393 INIT_LIST_HEAD (&kqswnal_data.kqn_delayedfwds);
394 INIT_LIST_HEAD (&kqswnal_data.kqn_delayedtxds);
395 INIT_LIST_HEAD (&kqswnal_data.kqn_readyrxds);
397 spin_lock_init (&kqswnal_data.kqn_sched_lock);
398 init_waitqueue_head (&kqswnal_data.kqn_sched_waitq);
400 /* Leave kqn_rpc_success zeroed */
402 kqswnal_data.kqn_rpc_failed.Data[0] = -ECONNREFUSED;
404 kqswnal_data.kqn_rpc_failed.Status = -ECONNREFUSED;
407 /* pointers/lists/locks initialised */
408 kqswnal_data.kqn_init = KQN_INIT_DATA;
411 kqswnal_data.kqn_ep = ep_system();
412 if (kqswnal_data.kqn_ep == NULL) {
413 CERROR("Can't initialise EKC\n");
414 kqswnal_shutdown(nal);
415 return (PTL_IFACE_INVALID);
418 if (ep_waitfor_nodeid(kqswnal_data.kqn_ep) == ELAN_INVALID_NODE) {
419 CERROR("Can't get elan ID\n");
420 kqswnal_shutdown(nal);
421 return (PTL_IFACE_INVALID);
424 /**********************************************************************/
425 /* Find the first Elan device */
427 kqswnal_data.kqn_ep = ep_device (0);
428 if (kqswnal_data.kqn_ep == NULL)
430 CERROR ("Can't get elan device 0\n");
431 kqswnal_shutdown(nal);
432 return (PTL_IFACE_INVALID);
436 kqswnal_data.kqn_nid_offset = 0;
437 kqswnal_data.kqn_nnodes = ep_numnodes (kqswnal_data.kqn_ep);
438 kqswnal_data.kqn_elanid = ep_nodeid (kqswnal_data.kqn_ep);
440 /**********************************************************************/
441 /* Get the transmitter */
443 kqswnal_data.kqn_eptx = ep_alloc_xmtr (kqswnal_data.kqn_ep);
444 if (kqswnal_data.kqn_eptx == NULL)
446 CERROR ("Can't allocate transmitter\n");
447 kqswnal_shutdown (nal);
448 return (PTL_NO_SPACE);
451 /**********************************************************************/
452 /* Get the receivers */
454 kqswnal_data.kqn_eprx_small = ep_alloc_rcvr (kqswnal_data.kqn_ep,
455 EP_MSG_SVC_PORTALS_SMALL,
456 KQSW_EP_ENVELOPES_SMALL);
457 if (kqswnal_data.kqn_eprx_small == NULL)
459 CERROR ("Can't install small msg receiver\n");
460 kqswnal_shutdown (nal);
461 return (PTL_NO_SPACE);
464 kqswnal_data.kqn_eprx_large = ep_alloc_rcvr (kqswnal_data.kqn_ep,
465 EP_MSG_SVC_PORTALS_LARGE,
466 KQSW_EP_ENVELOPES_LARGE);
467 if (kqswnal_data.kqn_eprx_large == NULL)
469 CERROR ("Can't install large msg receiver\n");
470 kqswnal_shutdown (nal);
471 return (PTL_NO_SPACE);
474 /**********************************************************************/
475 /* Reserve Elan address space for transmit descriptors NB we may
476 * either send the contents of associated buffers immediately, or
477 * map them for the peer to suck/blow... */
479 kqswnal_data.kqn_ep_tx_nmh =
480 ep_dvma_reserve(kqswnal_data.kqn_ep,
481 KQSW_NTXMSGPAGES*(KQSW_NTXMSGS+KQSW_NNBLK_TXMSGS),
483 if (kqswnal_data.kqn_ep_tx_nmh == NULL) {
484 CERROR("Can't reserve tx dma space\n");
485 kqswnal_shutdown(nal);
486 return (PTL_NO_SPACE);
489 dmareq.Waitfn = DDI_DMA_SLEEP;
490 dmareq.ElanAddr = (E3_Addr) 0;
491 dmareq.Attr = PTE_LOAD_LITTLE_ENDIAN;
492 dmareq.Perm = ELAN_PERM_REMOTEWRITE;
494 rc = elan3_dma_reserve(kqswnal_data.kqn_ep->DmaState,
495 KQSW_NTXMSGPAGES*(KQSW_NTXMSGS+KQSW_NNBLK_TXMSGS),
496 &dmareq, &kqswnal_data.kqn_eptxdmahandle);
497 if (rc != DDI_SUCCESS)
499 CERROR ("Can't reserve rx dma space\n");
500 kqswnal_shutdown (nal);
501 return (PTL_NO_SPACE);
504 /**********************************************************************/
505 /* Reserve Elan address space for receive buffers */
507 kqswnal_data.kqn_ep_rx_nmh =
508 ep_dvma_reserve(kqswnal_data.kqn_ep,
509 KQSW_NRXMSGPAGES_SMALL * KQSW_NRXMSGS_SMALL +
510 KQSW_NRXMSGPAGES_LARGE * KQSW_NRXMSGS_LARGE,
512 if (kqswnal_data.kqn_ep_tx_nmh == NULL) {
513 CERROR("Can't reserve rx dma space\n");
514 kqswnal_shutdown(nal);
515 return (PTL_NO_SPACE);
518 dmareq.Waitfn = DDI_DMA_SLEEP;
519 dmareq.ElanAddr = (E3_Addr) 0;
520 dmareq.Attr = PTE_LOAD_LITTLE_ENDIAN;
521 dmareq.Perm = ELAN_PERM_REMOTEWRITE;
523 rc = elan3_dma_reserve (kqswnal_data.kqn_ep->DmaState,
524 KQSW_NRXMSGPAGES_SMALL * KQSW_NRXMSGS_SMALL +
525 KQSW_NRXMSGPAGES_LARGE * KQSW_NRXMSGS_LARGE,
526 &dmareq, &kqswnal_data.kqn_eprxdmahandle);
527 if (rc != DDI_SUCCESS)
529 CERROR ("Can't reserve rx dma space\n");
530 kqswnal_shutdown (nal);
531 return (PTL_NO_SPACE);
534 /**********************************************************************/
535 /* Allocate/Initialise transmit descriptors */
537 kqswnal_data.kqn_txds = NULL;
538 for (i = 0; i < (KQSW_NTXMSGS + KQSW_NNBLK_TXMSGS); i++)
541 int basepage = i * KQSW_NTXMSGPAGES;
543 PORTAL_ALLOC (ktx, sizeof(*ktx));
545 kqswnal_shutdown (nal);
546 return (PTL_NO_SPACE);
549 memset(ktx, 0, sizeof(*ktx)); /* NULL pointers; zero flags */
550 ktx->ktx_alloclist = kqswnal_data.kqn_txds;
551 kqswnal_data.kqn_txds = ktx;
553 PORTAL_ALLOC (ktx->ktx_buffer, KQSW_TX_BUFFER_SIZE);
554 if (ktx->ktx_buffer == NULL)
556 kqswnal_shutdown (nal);
557 return (PTL_NO_SPACE);
560 /* Map pre-allocated buffer NOW, to save latency on transmit */
561 premapped_pages = kqswnal_pages_spanned(ktx->ktx_buffer,
562 KQSW_TX_BUFFER_SIZE);
564 ep_dvma_load(kqswnal_data.kqn_ep, NULL,
565 ktx->ktx_buffer, KQSW_TX_BUFFER_SIZE,
566 kqswnal_data.kqn_ep_tx_nmh, basepage,
567 &all_rails, &ktx->ktx_ebuffer);
569 elan3_dvma_kaddr_load (kqswnal_data.kqn_ep->DmaState,
570 kqswnal_data.kqn_eptxdmahandle,
571 ktx->ktx_buffer, KQSW_TX_BUFFER_SIZE,
572 basepage, &ktx->ktx_ebuffer);
574 ktx->ktx_basepage = basepage + premapped_pages; /* message mapping starts here */
575 ktx->ktx_npages = KQSW_NTXMSGPAGES - premapped_pages; /* for this many pages */
577 INIT_LIST_HEAD (&ktx->ktx_delayed_list);
579 ktx->ktx_state = KTX_IDLE;
581 ktx->ktx_rail = -1; /* unset rail */
583 ktx->ktx_isnblk = (i >= KQSW_NTXMSGS);
584 list_add_tail (&ktx->ktx_list,
585 ktx->ktx_isnblk ? &kqswnal_data.kqn_nblk_idletxds :
586 &kqswnal_data.kqn_idletxds);
589 /**********************************************************************/
590 /* Allocate/Initialise receive descriptors */
591 kqswnal_data.kqn_rxds = NULL;
593 for (i = 0; i < KQSW_NRXMSGS_SMALL + KQSW_NRXMSGS_LARGE; i++)
602 PORTAL_ALLOC(krx, sizeof(*krx));
604 kqswnal_shutdown(nal);
605 return (PTL_NO_SPACE);
608 memset(krx, 0, sizeof(*krx)); /* clear flags, null pointers etc */
609 krx->krx_alloclist = kqswnal_data.kqn_rxds;
610 kqswnal_data.kqn_rxds = krx;
612 if (i < KQSW_NRXMSGS_SMALL)
614 krx->krx_npages = KQSW_NRXMSGPAGES_SMALL;
615 krx->krx_eprx = kqswnal_data.kqn_eprx_small;
619 krx->krx_npages = KQSW_NRXMSGPAGES_LARGE;
620 krx->krx_eprx = kqswnal_data.kqn_eprx_large;
623 LASSERT (krx->krx_npages > 0);
624 for (j = 0; j < krx->krx_npages; j++)
626 struct page *page = alloc_page(GFP_KERNEL);
629 kqswnal_shutdown (nal);
630 return (PTL_NO_SPACE);
633 krx->krx_kiov[j].kiov_page = page;
634 LASSERT(page_address(page) != NULL);
637 ep_dvma_load(kqswnal_data.kqn_ep, NULL,
639 PAGE_SIZE, kqswnal_data.kqn_ep_rx_nmh,
640 elan_page_idx, &all_rails, &elanbuffer);
643 krx->krx_elanbuffer = elanbuffer;
645 rc = ep_nmd_merge(&krx->krx_elanbuffer,
646 &krx->krx_elanbuffer,
648 /* NB contiguous mapping */
652 elan3_dvma_kaddr_load(kqswnal_data.kqn_ep->DmaState,
653 kqswnal_data.kqn_eprxdmahandle,
655 PAGE_SIZE, elan_page_idx,
658 krx->krx_elanbuffer = elanbuffer;
660 /* NB contiguous mapping */
661 LASSERT (elanbuffer == krx->krx_elanbuffer + j * PAGE_SIZE);
667 LASSERT (elan_page_idx ==
668 (KQSW_NRXMSGS_SMALL * KQSW_NRXMSGPAGES_SMALL) +
669 (KQSW_NRXMSGS_LARGE * KQSW_NRXMSGPAGES_LARGE));
671 /**********************************************************************/
672 /* Network interface ready to initialise */
674 my_process_id.nid = kqswnal_elanid2nid(kqswnal_data.kqn_elanid);
675 my_process_id.pid = requested_pid;
677 rc = lib_init(&kqswnal_lib, nal, my_process_id,
678 requested_limits, actual_limits);
681 CERROR ("lib_init failed %d\n", rc);
682 kqswnal_shutdown (nal);
686 kqswnal_data.kqn_init = KQN_INIT_LIB;
688 /**********************************************************************/
689 /* Queue receives, now that it's OK to run their completion callbacks */
691 for (krx = kqswnal_data.kqn_rxds; krx != NULL; krx = krx->krx_alloclist) {
692 /* NB this enqueue can allocate/sleep (attr == 0) */
693 krx->krx_state = KRX_POSTED;
695 rc = ep_queue_receive(krx->krx_eprx, kqswnal_rxhandler, krx,
696 &krx->krx_elanbuffer, 0);
698 rc = ep_queue_receive(krx->krx_eprx, kqswnal_rxhandler, krx,
700 krx->krx_npages * PAGE_SIZE, 0);
702 if (rc != EP_SUCCESS)
704 CERROR ("failed ep_queue_receive %d\n", rc);
705 kqswnal_shutdown (nal);
710 /**********************************************************************/
711 /* Spawn scheduling threads */
712 for (i = 0; i < num_online_cpus(); i++) {
713 rc = kqswnal_thread_start (kqswnal_scheduler, NULL);
716 CERROR ("failed to spawn scheduling thread: %d\n", rc);
717 kqswnal_shutdown (nal);
722 /**********************************************************************/
723 /* Connect to the router */
724 rc = kpr_register (&kqswnal_data.kqn_router, &kqswnal_router_interface);
725 CDEBUG(D_NET, "Can't initialise routing interface (rc = %d): not routing\n",rc);
727 rc = libcfs_nal_cmd_register (QSWNAL, &kqswnal_cmd, NULL);
729 CERROR ("Can't initialise command interface (rc = %d)\n", rc);
730 kqswnal_shutdown (nal);
734 kqswnal_data.kqn_init = KQN_INIT_ALL;
736 printk(KERN_INFO "Lustre: Routing QSW NAL loaded on node %d of %d "
737 "(Routing %s, initial mem %d)\n",
738 kqswnal_data.kqn_elanid, kqswnal_data.kqn_nnodes,
739 kpr_routing (&kqswnal_data.kqn_router) ? "enabled" : "disabled",
746 kqswnal_finalise (void)
749 if (kqswnal_tunables.kqn_sysctl != NULL)
750 unregister_sysctl_table (kqswnal_tunables.kqn_sysctl);
752 PtlNIFini(kqswnal_ni);
754 ptl_unregister_nal(QSWNAL);
758 kqswnal_initialise (void)
762 kqswnal_api.nal_ni_init = kqswnal_startup;
763 kqswnal_api.nal_ni_fini = kqswnal_shutdown;
765 /* Initialise dynamic tunables to defaults once only */
766 kqswnal_tunables.kqn_optimized_puts = KQSW_OPTIMIZED_PUTS;
767 kqswnal_tunables.kqn_optimized_gets = KQSW_OPTIMIZED_GETS;
769 rc = ptl_register_nal(QSWNAL, &kqswnal_api);
771 CERROR("Can't register QSWNAL: %d\n", rc);
772 return (-ENOMEM); /* or something... */
775 /* Pure gateways, and the workaround for 'EKC blocks forever until
776 * the service is active' want the NAL started up at module load
778 rc = PtlNIInit(QSWNAL, LUSTRE_SRV_PTL_PID, NULL, NULL, &kqswnal_ni);
779 if (rc != PTL_OK && rc != PTL_IFACE_DUP) {
780 ptl_unregister_nal(QSWNAL);
785 /* Press on regardless even if registering sysctl doesn't work */
786 kqswnal_tunables.kqn_sysctl =
787 register_sysctl_table (kqswnal_top_ctl_table, 0);
792 MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
793 MODULE_DESCRIPTION("Kernel Quadrics/Elan NAL v1.01");
794 MODULE_LICENSE("GPL");
796 module_init (kqswnal_initialise);
797 module_exit (kqswnal_finalise);