/*
- * Copyright (C) 2002 Cluster File Systems, Inc.
- * Author: Eric Barton <eric@bartonsoftware.com>
+ * GPL HEADER START
*
- * Copyright (C) 2002, Lawrence Livermore National Labs (LLNL)
- * W. Marcus Miller - Based on ksocknal
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * This file is part of Portals, http://www.sf.net/projects/lustre/
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
*
- * Portals is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * Portals is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU General Public License
- * along with Portals; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * version 2 along with this program; If not, see
+ * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
*
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ *
+ * Copyright (c) 2012, Intel Corporation.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ *
+ * lnet/klnds/qswlnd/qswlnd.c
+ *
+ * Author: Eric Barton <eric@bartonsoftware.com>
*/
-#include "qswnal.h"
-
-ptl_handle_ni_t kqswnal_ni;
-nal_t kqswnal_api;
-kqswnal_data_t kqswnal_data;
-
-kpr_nal_interface_t kqswnal_router_interface = {
- kprni_nalid: QSWNAL,
- kprni_arg: NULL,
- kprni_fwd: kqswnal_fwd_packet,
-};
-
-
-static int
-kqswnal_forward(nal_t *nal,
- int id,
- void *args, size_t args_len,
- void *ret, size_t ret_len)
-{
- kqswnal_data_t *k = nal->nal_data;
- nal_cb_t *nal_cb = k->kqn_cb;
-
- LASSERT (nal == &kqswnal_api);
- LASSERT (k == &kqswnal_data);
- LASSERT (nal_cb == &kqswnal_lib);
-
- lib_dispatch(nal_cb, k, id, args, ret); /* nal needs k */
- return (PTL_OK);
-}
-
-static void
-kqswnal_lock (nal_t *nal, unsigned long *flags)
-{
- kqswnal_data_t *k = nal->nal_data;
- nal_cb_t *nal_cb = k->kqn_cb;
-
- LASSERT (nal == &kqswnal_api);
- LASSERT (k == &kqswnal_data);
- LASSERT (nal_cb == &kqswnal_lib);
-
- nal_cb->cb_cli(nal_cb,flags);
-}
-
-static void
-kqswnal_unlock(nal_t *nal, unsigned long *flags)
-{
- kqswnal_data_t *k = nal->nal_data;
- nal_cb_t *nal_cb = k->kqn_cb;
-
- LASSERT (nal == &kqswnal_api);
- LASSERT (k == &kqswnal_data);
- LASSERT (nal_cb == &kqswnal_lib);
-
- nal_cb->cb_sti(nal_cb,flags);
-}
-
-static int
-kqswnal_shutdown(nal_t *nal, int ni)
-{
- CDEBUG (D_NET, "shutdown\n");
-
- LASSERT (nal == &kqswnal_api);
- return (0);
-}
-
-static void
-kqswnal_yield( nal_t *nal )
-{
- CDEBUG (D_NET, "yield\n");
+#include "qswlnd.h"
- if (current->need_resched)
- schedule();
- return;
-}
-static nal_t *
-kqswnal_init(int interface, ptl_pt_index_t ptl_size, ptl_ac_index_t ac_size,
- ptl_pid_t requested_pid)
+lnd_t the_kqswlnd =
{
- ptl_nid_t mynid = kqswnal_elanid2nid (kqswnal_data.kqn_elanid);
- int nnids = kqswnal_data.kqn_nnodes;
-
- CDEBUG(D_NET, "calling lib_init with nid "LPX64" of %d\n", mynid, nnids);
-
- lib_init(&kqswnal_lib, mynid, 0, nnids, ptl_size, ac_size);
+ .lnd_type = QSWLND,
+ .lnd_startup = kqswnal_startup,
+ .lnd_shutdown = kqswnal_shutdown,
+ .lnd_ctl = kqswnal_ctl,
+ .lnd_send = kqswnal_send,
+ .lnd_recv = kqswnal_recv,
+};
- return (&kqswnal_api);
-}
+kqswnal_data_t kqswnal_data;
int
-kqswnal_get_tx_desc (struct portal_ioctl_data *data)
+kqswnal_get_tx_desc (struct libcfs_ioctl_data *data)
{
unsigned long flags;
- struct list_head *tmp;
+ cfs_list_t *tmp;
kqswnal_tx_t *ktx;
+ lnet_hdr_t *hdr;
int index = data->ioc_count;
int rc = -ENOENT;
- spin_lock_irqsave (&kqswnal_data.kqn_idletxd_lock, flags);
+ spin_lock_irqsave(&kqswnal_data.kqn_idletxd_lock, flags);
- list_for_each (tmp, &kqswnal_data.kqn_activetxds) {
+ cfs_list_for_each (tmp, &kqswnal_data.kqn_activetxds) {
if (index-- != 0)
continue;
-
- ktx = list_entry (tmp, kqswnal_tx_t, ktx_list);
-
- data->ioc_pbuf1 = (char *)ktx;
- data->ioc_count = NTOH__u32(ktx->ktx_wire_hdr->type);
- data->ioc_size = NTOH__u32(PTL_HDR_LENGTH(ktx->ktx_wire_hdr));
- data->ioc_nid = NTOH__u64(ktx->ktx_wire_hdr->dest_nid);
- data->ioc_nid2 = ktx->ktx_nid;
- data->ioc_misc = ktx->ktx_launcher;
- data->ioc_flags = (list_empty (&ktx->ktx_delayed_list) ? 0 : 1) |
- ((!ktx->ktx_forwarding) ? 0 : 2) |
- ((!ktx->ktx_isnblk) ? 0 : 4);
+ ktx = cfs_list_entry (tmp, kqswnal_tx_t, ktx_list);
+ hdr = (lnet_hdr_t *)ktx->ktx_buffer;
+
+ data->ioc_count = le32_to_cpu(hdr->payload_length);
+ data->ioc_nid = le64_to_cpu(hdr->dest_nid);
+ data->ioc_u64[0] = ktx->ktx_nid;
+ data->ioc_u32[0] = le32_to_cpu(hdr->type);
+ data->ioc_u32[1] = ktx->ktx_launcher;
+ data->ioc_flags =
+ (cfs_list_empty (&ktx->ktx_schedlist) ? 0 : 1) |
+ (ktx->ktx_state << 2);
rc = 0;
break;
}
-
- spin_unlock_irqrestore (&kqswnal_data.kqn_idletxd_lock, flags);
+
+ spin_unlock_irqrestore(&kqswnal_data.kqn_idletxd_lock, flags);
return (rc);
}
int
-kqswnal_cmd (struct portal_ioctl_data *data, void *private)
+kqswnal_ctl (lnet_ni_t *ni, unsigned int cmd, void *arg)
{
- LASSERT (data != NULL);
-
- switch (data->ioc_nal_cmd) {
- case NAL_CMD_GET_TXDESC:
+ struct libcfs_ioctl_data *data = arg;
+
+ LASSERT (ni == kqswnal_data.kqn_ni);
+
+ switch (cmd) {
+ case IOC_LIBCFS_GET_TXDESC:
return (kqswnal_get_tx_desc (data));
- case NAL_CMD_REGISTER_MYNID:
- CDEBUG (D_IOCTL, "setting NID offset to "LPX64" (was "LPX64")\n",
- data->ioc_nid - kqswnal_data.kqn_elanid,
- kqswnal_data.kqn_nid_offset);
- kqswnal_data.kqn_nid_offset =
- data->ioc_nid - kqswnal_data.kqn_elanid;
- kqswnal_lib.ni.nid = data->ioc_nid;
- return (0);
-
+ case IOC_LIBCFS_REGISTER_MYNID:
+ if (data->ioc_nid == ni->ni_nid)
+ return 0;
+
+ LASSERT (LNET_NIDNET(data->ioc_nid) == LNET_NIDNET(ni->ni_nid));
+
+ CERROR("obsolete IOC_LIBCFS_REGISTER_MYNID for %s(%s)\n",
+ libcfs_nid2str(data->ioc_nid),
+ libcfs_nid2str(ni->ni_nid));
+ return 0;
+
default:
return (-EINVAL);
}
}
-void __exit
-kqswnal_finalise (void)
+void
+kqswnal_shutdown(lnet_ni_t *ni)
{
+ unsigned long flags;
+ kqswnal_tx_t *ktx;
+ kqswnal_rx_t *krx;
+
+ CDEBUG (D_NET, "shutdown\n");
+ LASSERT (ni->ni_data == &kqswnal_data);
+ LASSERT (ni == kqswnal_data.kqn_ni);
+
switch (kqswnal_data.kqn_init)
{
default:
LASSERT (0);
case KQN_INIT_ALL:
- PORTAL_SYMBOL_UNREGISTER (kqswnal_ni);
- /* fall through */
-
- case KQN_INIT_PTL:
- PtlNIFini (kqswnal_ni);
- lib_fini (&kqswnal_lib);
- /* fall through */
-
case KQN_INIT_DATA:
break;
-
- case KQN_INIT_NOTHING:
- return;
}
/**********************************************************************/
- /* Make router stop her calling me and fail any more call-ins */
- kpr_shutdown (&kqswnal_data.kqn_router);
-
- /**********************************************************************/
- /* flag threads to terminate, wake them and wait for them to die */
-
+ /* Signal the start of shutdown... */
+ spin_lock_irqsave(&kqswnal_data.kqn_idletxd_lock, flags);
kqswnal_data.kqn_shuttingdown = 1;
- wake_up_all (&kqswnal_data.kqn_sched_waitq);
+ spin_unlock_irqrestore(&kqswnal_data.kqn_idletxd_lock, flags);
- while (atomic_read (&kqswnal_data.kqn_nthreads) != 0) {
- CDEBUG(D_NET, "waiting for %d threads to terminate\n",
- atomic_read (&kqswnal_data.kqn_nthreads));
- set_current_state (TASK_UNINTERRUPTIBLE);
- schedule_timeout (HZ);
+ /**********************************************************************/
+ /* wait for sends that have allocated a tx desc to launch or give up */
+ while (atomic_read (&kqswnal_data.kqn_pending_txs) != 0) {
+ CDEBUG(D_NET, "waiting for %d pending sends\n",
+ atomic_read (&kqswnal_data.kqn_pending_txs));
+ cfs_pause(cfs_time_seconds(1));
}
/**********************************************************************/
/* close elan comms */
-
+ /* Shut down receivers first; rx callbacks might try sending... */
if (kqswnal_data.kqn_eprx_small != NULL)
- ep_remove_large_rcvr (kqswnal_data.kqn_eprx_small);
+ ep_free_rcvr (kqswnal_data.kqn_eprx_small);
if (kqswnal_data.kqn_eprx_large != NULL)
- ep_remove_large_rcvr (kqswnal_data.kqn_eprx_large);
+ ep_free_rcvr (kqswnal_data.kqn_eprx_large);
+
+ /* NB ep_free_rcvr() returns only after we've freed off all receive
+ * buffers (see shutdown handling in kqswnal_requeue_rx()). This
+ * means we must have completed any messages we passed to
+ * lnet_parse() */
if (kqswnal_data.kqn_eptx != NULL)
- ep_free_large_xmtr (kqswnal_data.kqn_eptx);
+ ep_free_xmtr (kqswnal_data.kqn_eptx);
- /**********************************************************************/
- /* No more threads. No more portals, router or comms callbacks!
- * I control the horizontals and the verticals...
- */
+ /* NB ep_free_xmtr() returns only after all outstanding transmits
+ * have called their callback... */
+ LASSERT(cfs_list_empty(&kqswnal_data.kqn_activetxds));
/**********************************************************************/
- /* Complete any blocked forwarding packets with error
- */
-
- while (!list_empty (&kqswnal_data.kqn_idletxd_fwdq))
- {
- kpr_fwd_desc_t *fwd = list_entry (kqswnal_data.kqn_idletxd_fwdq.next,
- kpr_fwd_desc_t, kprfd_list);
- list_del (&fwd->kprfd_list);
- kpr_fwd_done (&kqswnal_data.kqn_router, fwd, -EHOSTUNREACH);
- }
+ /* flag threads to terminate, wake them and wait for them to die */
+ kqswnal_data.kqn_shuttingdown = 2;
+ wake_up_all (&kqswnal_data.kqn_sched_waitq);
- while (!list_empty (&kqswnal_data.kqn_delayedfwds))
- {
- kpr_fwd_desc_t *fwd = list_entry (kqswnal_data.kqn_delayedfwds.next,
- kpr_fwd_desc_t, kprfd_list);
- list_del (&fwd->kprfd_list);
- kpr_fwd_done (&kqswnal_data.kqn_router, fwd, -EHOSTUNREACH);
+ while (atomic_read (&kqswnal_data.kqn_nthreads) != 0) {
+ CDEBUG(D_NET, "waiting for %d threads to terminate\n",
+ atomic_read (&kqswnal_data.kqn_nthreads));
+ cfs_pause(cfs_time_seconds(1));
}
/**********************************************************************/
- /* Wait for router to complete any packets I sent her
+ /* No more threads. No more portals, router or comms callbacks!
+ * I control the horizontals and the verticals...
*/
- kpr_deregister (&kqswnal_data.kqn_router);
-
+ LASSERT (cfs_list_empty (&kqswnal_data.kqn_readyrxds));
+ LASSERT (cfs_list_empty (&kqswnal_data.kqn_donetxds));
+ LASSERT (cfs_list_empty (&kqswnal_data.kqn_delayedtxds));
/**********************************************************************/
/* Unmap message buffers and free all descriptors and buffers
*/
- if (kqswnal_data.kqn_eprxdmahandle != NULL)
- {
- elan3_dvma_unload(kqswnal_data.kqn_epdev->DmaState,
- kqswnal_data.kqn_eprxdmahandle, 0,
- KQSW_NRXMSGPAGES_SMALL * KQSW_NRXMSGS_SMALL +
- KQSW_NRXMSGPAGES_LARGE * KQSW_NRXMSGS_LARGE);
+ /* FTTB, we need to unmap any remaining mapped memory. When
+ * ep_dvma_release() get fixed (and releases any mappings in the
+ * region), we can delete all the code from here --------> */
+
+ for (ktx = kqswnal_data.kqn_txds; ktx != NULL; ktx = ktx->ktx_alloclist) {
+ /* If ktx has a buffer, it got mapped; unmap now. NB only
+ * the pre-mapped stuff is still mapped since all tx descs
+ * must be idle */
- elan3_dma_release(kqswnal_data.kqn_epdev->DmaState,
- kqswnal_data.kqn_eprxdmahandle);
+ if (ktx->ktx_buffer != NULL)
+ ep_dvma_unload(kqswnal_data.kqn_ep,
+ kqswnal_data.kqn_ep_tx_nmh,
+ &ktx->ktx_ebuffer);
}
- if (kqswnal_data.kqn_eptxdmahandle != NULL)
- {
- elan3_dvma_unload(kqswnal_data.kqn_epdev->DmaState,
- kqswnal_data.kqn_eptxdmahandle, 0,
- KQSW_NTXMSGPAGES * (KQSW_NTXMSGS +
- KQSW_NNBLK_TXMSGS));
+ for (krx = kqswnal_data.kqn_rxds; krx != NULL; krx = krx->krx_alloclist) {
+ /* If krx_kiov[0].kiov_page got allocated, it got mapped.
+ * NB subsequent pages get merged */
- elan3_dma_release(kqswnal_data.kqn_epdev->DmaState,
- kqswnal_data.kqn_eptxdmahandle);
+ if (krx->krx_kiov[0].kiov_page != NULL)
+ ep_dvma_unload(kqswnal_data.kqn_ep,
+ kqswnal_data.kqn_ep_rx_nmh,
+ &krx->krx_elanbuffer);
}
+ /* <----------- to here */
- if (kqswnal_data.kqn_txds != NULL)
- {
- int i;
+ if (kqswnal_data.kqn_ep_rx_nmh != NULL)
+ ep_dvma_release(kqswnal_data.kqn_ep, kqswnal_data.kqn_ep_rx_nmh);
- for (i = 0; i < KQSW_NTXMSGS + KQSW_NNBLK_TXMSGS; i++)
- {
- kqswnal_tx_t *ktx = &kqswnal_data.kqn_txds[i];
+ if (kqswnal_data.kqn_ep_tx_nmh != NULL)
+ ep_dvma_release(kqswnal_data.kqn_ep, kqswnal_data.kqn_ep_tx_nmh);
- if (ktx->ktx_buffer != NULL)
- PORTAL_FREE(ktx->ktx_buffer,
- KQSW_TX_BUFFER_SIZE);
- }
+ while (kqswnal_data.kqn_txds != NULL) {
+ ktx = kqswnal_data.kqn_txds;
- PORTAL_FREE(kqswnal_data.kqn_txds,
- sizeof (kqswnal_tx_t) * (KQSW_NTXMSGS +
- KQSW_NNBLK_TXMSGS));
+ if (ktx->ktx_buffer != NULL)
+ LIBCFS_FREE(ktx->ktx_buffer, KQSW_TX_BUFFER_SIZE);
+
+ kqswnal_data.kqn_txds = ktx->ktx_alloclist;
+ LIBCFS_FREE(ktx, sizeof(*ktx));
}
- if (kqswnal_data.kqn_rxds != NULL)
- {
- int i;
- int j;
+ while (kqswnal_data.kqn_rxds != NULL) {
+ int i;
- for (i = 0; i < KQSW_NRXMSGS_SMALL + KQSW_NRXMSGS_LARGE; i++)
- {
- kqswnal_rx_t *krx = &kqswnal_data.kqn_rxds[i];
-
- for (j = 0; j < krx->krx_npages; j++)
- if (krx->krx_pages[j] != NULL)
- __free_page (krx->krx_pages[j]);
- }
+ krx = kqswnal_data.kqn_rxds;
+ for (i = 0; i < krx->krx_npages; i++)
+ if (krx->krx_kiov[i].kiov_page != NULL)
+ __free_page (krx->krx_kiov[i].kiov_page);
- PORTAL_FREE(kqswnal_data.kqn_rxds,
- sizeof(kqswnal_rx_t) * (KQSW_NRXMSGS_SMALL +
- KQSW_NRXMSGS_LARGE));
+ kqswnal_data.kqn_rxds = krx->krx_alloclist;
+ LIBCFS_FREE(krx, sizeof (*krx));
}
/* resets flags, pointers to NULL etc */
memset(&kqswnal_data, 0, sizeof (kqswnal_data));
- CDEBUG (D_MALLOC, "done kmem %d\n", atomic_read(&portal_kmemory));
+ CDEBUG (D_MALLOC, "done kmem %d\n", atomic_read(&libcfs_kmemory));
- printk (KERN_INFO "Routing QSW NAL unloaded (final mem %d)\n",
- atomic_read(&portal_kmemory));
+ module_put(THIS_MODULE);
}
-static int __init
-kqswnal_initialise (void)
+int
+kqswnal_startup (lnet_ni_t *ni)
{
- ELAN3_DMA_REQUEST dmareq;
+ EP_RAILMASK all_rails = EP_RAILMASK_ALL;
int rc;
int i;
+ kqswnal_rx_t *krx;
+ kqswnal_tx_t *ktx;
int elan_page_idx;
- int pkmem = atomic_read(&portal_kmemory);
-
- LASSERT (kqswnal_data.kqn_init == KQN_INIT_NOTHING);
-
- CDEBUG (D_MALLOC, "start kmem %d\n", atomic_read(&portal_kmemory));
-
- kqswnal_api.forward = kqswnal_forward;
- kqswnal_api.shutdown = kqswnal_shutdown;
- kqswnal_api.yield = kqswnal_yield;
- kqswnal_api.validate = NULL; /* our api validate is a NOOP */
- kqswnal_api.lock = kqswnal_lock;
- kqswnal_api.unlock = kqswnal_unlock;
- kqswnal_api.nal_data = &kqswnal_data;
-
- kqswnal_lib.nal_data = &kqswnal_data;
+ LASSERT (ni->ni_lnd == &the_kqswlnd);
+
+ /* Only 1 instance supported */
+ if (kqswnal_data.kqn_init != KQN_INIT_NOTHING) {
+ CERROR ("Only 1 instance supported\n");
+ return -EPERM;
+ }
+
+ if (ni->ni_interfaces[0] != NULL) {
+ CERROR("Explicit interface config not supported\n");
+ return -EPERM;
+ }
+
+ if (*kqswnal_tunables.kqn_credits >=
+ *kqswnal_tunables.kqn_ntxmsgs) {
+ LCONSOLE_ERROR_MSG(0x12e, "Configuration error: please set "
+ "ntxmsgs(%d) > credits(%d)\n",
+ *kqswnal_tunables.kqn_ntxmsgs,
+ *kqswnal_tunables.kqn_credits);
+ }
+
+ CDEBUG (D_MALLOC, "start kmem %d\n", atomic_read(&libcfs_kmemory));
+
/* ensure all pointers NULL etc */
memset (&kqswnal_data, 0, sizeof (kqswnal_data));
- kqswnal_data.kqn_cb = &kqswnal_lib;
+ kqswnal_data.kqn_ni = ni;
+ ni->ni_data = &kqswnal_data;
+ ni->ni_peertxcredits = *kqswnal_tunables.kqn_peercredits;
+ ni->ni_maxtxcredits = *kqswnal_tunables.kqn_credits;
- INIT_LIST_HEAD (&kqswnal_data.kqn_idletxds);
- INIT_LIST_HEAD (&kqswnal_data.kqn_nblk_idletxds);
- INIT_LIST_HEAD (&kqswnal_data.kqn_activetxds);
- spin_lock_init (&kqswnal_data.kqn_idletxd_lock);
- init_waitqueue_head (&kqswnal_data.kqn_idletxd_waitq);
- INIT_LIST_HEAD (&kqswnal_data.kqn_idletxd_fwdq);
+ CFS_INIT_LIST_HEAD (&kqswnal_data.kqn_idletxds);
+ CFS_INIT_LIST_HEAD (&kqswnal_data.kqn_activetxds);
+ spin_lock_init(&kqswnal_data.kqn_idletxd_lock);
- INIT_LIST_HEAD (&kqswnal_data.kqn_delayedfwds);
- INIT_LIST_HEAD (&kqswnal_data.kqn_delayedtxds);
- INIT_LIST_HEAD (&kqswnal_data.kqn_readyrxds);
+ CFS_INIT_LIST_HEAD (&kqswnal_data.kqn_delayedtxds);
+ CFS_INIT_LIST_HEAD (&kqswnal_data.kqn_donetxds);
+ CFS_INIT_LIST_HEAD (&kqswnal_data.kqn_readyrxds);
- spin_lock_init (&kqswnal_data.kqn_sched_lock);
+ spin_lock_init(&kqswnal_data.kqn_sched_lock);
init_waitqueue_head (&kqswnal_data.kqn_sched_waitq);
- spin_lock_init (&kqswnal_data.kqn_statelock);
-
/* pointers/lists/locks initialised */
kqswnal_data.kqn_init = KQN_INIT_DATA;
+ try_module_get(THIS_MODULE);
+
+ kqswnal_data.kqn_ep = ep_system();
+ if (kqswnal_data.kqn_ep == NULL) {
+ CERROR("Can't initialise EKC\n");
+ kqswnal_shutdown(ni);
+ return (-ENODEV);
+ }
- /**********************************************************************/
- /* Find the first Elan device */
-
- kqswnal_data.kqn_epdev = ep_device (0);
- if (kqswnal_data.kqn_epdev == NULL)
- {
- CERROR ("Can't get elan device 0\n");
- return (-ENOMEM);
+ if (ep_waitfor_nodeid(kqswnal_data.kqn_ep) == ELAN_INVALID_NODE) {
+ CERROR("Can't get elan ID\n");
+ kqswnal_shutdown(ni);
+ return (-ENODEV);
}
- kqswnal_data.kqn_nid_offset = 0;
- kqswnal_data.kqn_nnodes = ep_numnodes (kqswnal_data.kqn_epdev);
- kqswnal_data.kqn_elanid = ep_nodeid (kqswnal_data.kqn_epdev);
+ kqswnal_data.kqn_nnodes = ep_numnodes (kqswnal_data.kqn_ep);
+ kqswnal_data.kqn_elanid = ep_nodeid (kqswnal_data.kqn_ep);
+
+ ni->ni_nid = LNET_MKNID(LNET_NIDNET(ni->ni_nid), kqswnal_data.kqn_elanid);
/**********************************************************************/
/* Get the transmitter */
- kqswnal_data.kqn_eptx = ep_alloc_large_xmtr (kqswnal_data.kqn_epdev);
+ kqswnal_data.kqn_eptx = ep_alloc_xmtr (kqswnal_data.kqn_ep);
if (kqswnal_data.kqn_eptx == NULL)
{
CERROR ("Can't allocate transmitter\n");
- kqswnal_finalise ();
+ kqswnal_shutdown (ni);
return (-ENOMEM);
}
/**********************************************************************/
/* Get the receivers */
- kqswnal_data.kqn_eprx_small = ep_install_large_rcvr (kqswnal_data.kqn_epdev,
- EP_SVC_LARGE_PORTALS_SMALL,
- KQSW_EP_ENVELOPES_SMALL);
+ kqswnal_data.kqn_eprx_small =
+ ep_alloc_rcvr (kqswnal_data.kqn_ep,
+ EP_MSG_SVC_PORTALS_SMALL,
+ *kqswnal_tunables.kqn_ep_envelopes_small);
if (kqswnal_data.kqn_eprx_small == NULL)
{
CERROR ("Can't install small msg receiver\n");
- kqswnal_finalise ();
+ kqswnal_shutdown (ni);
return (-ENOMEM);
}
- kqswnal_data.kqn_eprx_large = ep_install_large_rcvr (kqswnal_data.kqn_epdev,
- EP_SVC_LARGE_PORTALS_LARGE,
- KQSW_EP_ENVELOPES_LARGE);
+ kqswnal_data.kqn_eprx_large =
+ ep_alloc_rcvr (kqswnal_data.kqn_ep,
+ EP_MSG_SVC_PORTALS_LARGE,
+ *kqswnal_tunables.kqn_ep_envelopes_large);
if (kqswnal_data.kqn_eprx_large == NULL)
{
CERROR ("Can't install large msg receiver\n");
- kqswnal_finalise ();
+ kqswnal_shutdown (ni);
return (-ENOMEM);
}
/**********************************************************************/
- /* Reserve Elan address space for transmit buffers */
-
- dmareq.Waitfn = DDI_DMA_SLEEP;
- dmareq.ElanAddr = (E3_Addr) 0;
- dmareq.Attr = PTE_LOAD_LITTLE_ENDIAN;
- dmareq.Perm = ELAN_PERM_REMOTEREAD;
-
- rc = elan3_dma_reserve(kqswnal_data.kqn_epdev->DmaState,
- KQSW_NTXMSGPAGES*(KQSW_NTXMSGS+KQSW_NNBLK_TXMSGS),
- &dmareq, &kqswnal_data.kqn_eptxdmahandle);
- if (rc != DDI_SUCCESS)
- {
- CERROR ("Can't reserve rx dma space\n");
- kqswnal_finalise ();
+ /* Reserve Elan address space for transmit descriptors NB we may
+ * either send the contents of associated buffers immediately, or
+ * map them for the peer to suck/blow... */
+ kqswnal_data.kqn_ep_tx_nmh =
+ ep_dvma_reserve(kqswnal_data.kqn_ep,
+ KQSW_NTXMSGPAGES*(*kqswnal_tunables.kqn_ntxmsgs),
+ EP_PERM_WRITE);
+ if (kqswnal_data.kqn_ep_tx_nmh == NULL) {
+ CERROR("Can't reserve tx dma space\n");
+ kqswnal_shutdown(ni);
return (-ENOMEM);
}
/**********************************************************************/
/* Reserve Elan address space for receive buffers */
-
- dmareq.Waitfn = DDI_DMA_SLEEP;
- dmareq.ElanAddr = (E3_Addr) 0;
- dmareq.Attr = PTE_LOAD_LITTLE_ENDIAN;
- dmareq.Perm = ELAN_PERM_REMOTEWRITE;
-
- rc = elan3_dma_reserve (kqswnal_data.kqn_epdev->DmaState,
- KQSW_NRXMSGPAGES_SMALL * KQSW_NRXMSGS_SMALL +
- KQSW_NRXMSGPAGES_LARGE * KQSW_NRXMSGS_LARGE,
- &dmareq, &kqswnal_data.kqn_eprxdmahandle);
- if (rc != DDI_SUCCESS)
- {
- CERROR ("Can't reserve rx dma space\n");
- kqswnal_finalise ();
+ kqswnal_data.kqn_ep_rx_nmh =
+ ep_dvma_reserve(kqswnal_data.kqn_ep,
+ KQSW_NRXMSGPAGES_SMALL *
+ (*kqswnal_tunables.kqn_nrxmsgs_small) +
+ KQSW_NRXMSGPAGES_LARGE *
+ (*kqswnal_tunables.kqn_nrxmsgs_large),
+ EP_PERM_WRITE);
+ if (kqswnal_data.kqn_ep_tx_nmh == NULL) {
+ CERROR("Can't reserve rx dma space\n");
+ kqswnal_shutdown(ni);
return (-ENOMEM);
}
/**********************************************************************/
/* Allocate/Initialise transmit descriptors */
- PORTAL_ALLOC(kqswnal_data.kqn_txds,
- sizeof(kqswnal_tx_t) * (KQSW_NTXMSGS + KQSW_NNBLK_TXMSGS));
- if (kqswnal_data.kqn_txds == NULL)
- {
- kqswnal_finalise ();
- return (-ENOMEM);
- }
-
- /* clear flags, null pointers etc */
- memset(kqswnal_data.kqn_txds, 0,
- sizeof(kqswnal_tx_t) * (KQSW_NTXMSGS + KQSW_NNBLK_TXMSGS));
- for (i = 0; i < (KQSW_NTXMSGS + KQSW_NNBLK_TXMSGS); i++)
+ kqswnal_data.kqn_txds = NULL;
+ for (i = 0; i < (*kqswnal_tunables.kqn_ntxmsgs); i++)
{
int premapped_pages;
- kqswnal_tx_t *ktx = &kqswnal_data.kqn_txds[i];
int basepage = i * KQSW_NTXMSGPAGES;
- PORTAL_ALLOC (ktx->ktx_buffer, KQSW_TX_BUFFER_SIZE);
+ LIBCFS_ALLOC (ktx, sizeof(*ktx));
+ if (ktx == NULL) {
+ kqswnal_shutdown (ni);
+ return (-ENOMEM);
+ }
+
+ memset(ktx, 0, sizeof(*ktx)); /* NULL pointers; zero flags */
+ ktx->ktx_alloclist = kqswnal_data.kqn_txds;
+ kqswnal_data.kqn_txds = ktx;
+
+ LIBCFS_ALLOC (ktx->ktx_buffer, KQSW_TX_BUFFER_SIZE);
if (ktx->ktx_buffer == NULL)
{
- kqswnal_finalise ();
+ kqswnal_shutdown (ni);
return (-ENOMEM);
}
/* Map pre-allocated buffer NOW, to save latency on transmit */
premapped_pages = kqswnal_pages_spanned(ktx->ktx_buffer,
KQSW_TX_BUFFER_SIZE);
-
- elan3_dvma_kaddr_load (kqswnal_data.kqn_epdev->DmaState,
- kqswnal_data.kqn_eptxdmahandle,
- ktx->ktx_buffer, KQSW_TX_BUFFER_SIZE,
- basepage, &ktx->ktx_ebuffer);
+ ep_dvma_load(kqswnal_data.kqn_ep, NULL,
+ ktx->ktx_buffer, KQSW_TX_BUFFER_SIZE,
+ kqswnal_data.kqn_ep_tx_nmh, basepage,
+ &all_rails, &ktx->ktx_ebuffer);
ktx->ktx_basepage = basepage + premapped_pages; /* message mapping starts here */
ktx->ktx_npages = KQSW_NTXMSGPAGES - premapped_pages; /* for this many pages */
- INIT_LIST_HEAD (&ktx->ktx_delayed_list);
+ CFS_INIT_LIST_HEAD (&ktx->ktx_schedlist);
- ktx->ktx_isnblk = (i >= KQSW_NTXMSGS);
- list_add_tail (&ktx->ktx_list,
- ktx->ktx_isnblk ? &kqswnal_data.kqn_nblk_idletxds :
- &kqswnal_data.kqn_idletxds);
+ ktx->ktx_state = KTX_IDLE;
+ ktx->ktx_rail = -1; /* unset rail */
+
+ cfs_list_add_tail (&ktx->ktx_list, &kqswnal_data.kqn_idletxds);
}
/**********************************************************************/
/* Allocate/Initialise receive descriptors */
-
- PORTAL_ALLOC (kqswnal_data.kqn_rxds,
- sizeof (kqswnal_rx_t) * (KQSW_NRXMSGS_SMALL + KQSW_NRXMSGS_LARGE));
- if (kqswnal_data.kqn_rxds == NULL)
- {
- kqswnal_finalise ();
- return (-ENOMEM);
- }
-
- memset(kqswnal_data.kqn_rxds, 0, /* clear flags, null pointers etc */
- sizeof(kqswnal_rx_t) * (KQSW_NRXMSGS_SMALL+KQSW_NRXMSGS_LARGE));
-
+ kqswnal_data.kqn_rxds = NULL;
elan_page_idx = 0;
- for (i = 0; i < KQSW_NRXMSGS_SMALL + KQSW_NRXMSGS_LARGE; i++)
+ for (i = 0; i < *kqswnal_tunables.kqn_nrxmsgs_small + *kqswnal_tunables.kqn_nrxmsgs_large; i++)
{
- E3_Addr elanaddr;
+ EP_NMD elanbuffer;
int j;
- kqswnal_rx_t *krx = &kqswnal_data.kqn_rxds[i];
- if (i < KQSW_NRXMSGS_SMALL)
+ LIBCFS_ALLOC(krx, sizeof(*krx));
+ if (krx == NULL) {
+ kqswnal_shutdown(ni);
+ return (-ENOMEM);
+ }
+
+ memset(krx, 0, sizeof(*krx)); /* clear flags, null pointers etc */
+ krx->krx_alloclist = kqswnal_data.kqn_rxds;
+ kqswnal_data.kqn_rxds = krx;
+
+ if (i < *kqswnal_tunables.kqn_nrxmsgs_small)
{
krx->krx_npages = KQSW_NRXMSGPAGES_SMALL;
krx->krx_eprx = kqswnal_data.kqn_eprx_small;
LASSERT (krx->krx_npages > 0);
for (j = 0; j < krx->krx_npages; j++)
{
- krx->krx_pages[j] = alloc_page(GFP_KERNEL);
- if (krx->krx_pages[j] == NULL)
- {
- kqswnal_finalise ();
+ struct page *page = alloc_page(GFP_KERNEL);
+
+ if (page == NULL) {
+ kqswnal_shutdown (ni);
return (-ENOMEM);
}
- LASSERT(page_address(krx->krx_pages[j]) != NULL);
-
- elan3_dvma_kaddr_load(kqswnal_data.kqn_epdev->DmaState,
- kqswnal_data.kqn_eprxdmahandle,
- page_address(krx->krx_pages[j]),
- PAGE_SIZE, elan_page_idx,
- &elanaddr);
+ krx->krx_kiov[j] = (lnet_kiov_t) {.kiov_page = page,
+ .kiov_offset = 0,
+ .kiov_len = PAGE_SIZE};
+ LASSERT(page_address(page) != NULL);
+
+ ep_dvma_load(kqswnal_data.kqn_ep, NULL,
+ page_address(page),
+ PAGE_SIZE, kqswnal_data.kqn_ep_rx_nmh,
+ elan_page_idx, &all_rails, &elanbuffer);
+
+ if (j == 0) {
+ krx->krx_elanbuffer = elanbuffer;
+ } else {
+ rc = ep_nmd_merge(&krx->krx_elanbuffer,
+ &krx->krx_elanbuffer,
+ &elanbuffer);
+ /* NB contiguous mapping */
+ LASSERT(rc);
+ }
elan_page_idx++;
- if (j == 0)
- krx->krx_elanaddr = elanaddr;
-
- /* NB we assume a contiguous */
- LASSERT (elanaddr == krx->krx_elanaddr + j * PAGE_SIZE);
}
}
LASSERT (elan_page_idx ==
- (KQSW_NRXMSGS_SMALL * KQSW_NRXMSGPAGES_SMALL) +
- (KQSW_NRXMSGS_LARGE * KQSW_NRXMSGPAGES_LARGE));
-
- /**********************************************************************/
- /* Network interface ready to initialise */
-
- rc = PtlNIInit(kqswnal_init, 32, 4, 0, &kqswnal_ni);
- if (rc != 0)
- {
- CERROR ("PtlNIInit failed %d\n", rc);
- kqswnal_finalise ();
- return (-ENOMEM);
- }
-
- kqswnal_data.kqn_init = KQN_INIT_PTL;
+ (*kqswnal_tunables.kqn_nrxmsgs_small * KQSW_NRXMSGPAGES_SMALL) +
+ (*kqswnal_tunables.kqn_nrxmsgs_large * KQSW_NRXMSGPAGES_LARGE));
/**********************************************************************/
/* Queue receives, now that it's OK to run their completion callbacks */
- for (i = 0; i < KQSW_NRXMSGS_SMALL + KQSW_NRXMSGS_LARGE; i++)
- {
- kqswnal_rx_t *krx = &kqswnal_data.kqn_rxds[i];
-
+ for (krx = kqswnal_data.kqn_rxds; krx != NULL; krx = krx->krx_alloclist) {
/* NB this enqueue can allocate/sleep (attr == 0) */
+ krx->krx_state = KRX_POSTED;
rc = ep_queue_receive(krx->krx_eprx, kqswnal_rxhandler, krx,
- krx->krx_elanaddr,
- krx->krx_npages * PAGE_SIZE, 0);
- if (rc != 0)
- {
+ &krx->krx_elanbuffer, 0);
+ if (rc != EP_SUCCESS) {
CERROR ("failed ep_queue_receive %d\n", rc);
- kqswnal_finalise ();
- return (-ENOMEM);
+ kqswnal_shutdown (ni);
+ return (-EIO);
}
}
/**********************************************************************/
/* Spawn scheduling threads */
- for (i = 0; i < smp_num_cpus; i++)
- {
- rc = kqswnal_thread_start (kqswnal_scheduler, NULL);
+ for (i = 0; i < num_online_cpus(); i++) {
+ rc = kqswnal_thread_start(kqswnal_scheduler, NULL,
+ "kqswnal_sched");
if (rc != 0)
{
CERROR ("failed to spawn scheduling thread: %d\n", rc);
- kqswnal_finalise ();
- return (rc);
+ kqswnal_shutdown (ni);
+ return (-ESRCH);
}
}
- /**********************************************************************/
- /* Connect to the router */
- rc = kpr_register (&kqswnal_data.kqn_router, &kqswnal_router_interface);
- CDEBUG(D_NET, "Can't initialise routing interface (rc = %d): not routing\n",rc);
-
- rc = kportal_nal_register (QSWNAL, &kqswnal_cmd, NULL);
- if (rc != 0) {
- CERROR ("Can't initialise command interface (rc = %d)\n", rc);
- kqswnal_finalise ();
- return (rc);
- }
-
- PORTAL_SYMBOL_REGISTER(kqswnal_ni);
kqswnal_data.kqn_init = KQN_INIT_ALL;
+ return (0);
+}
- printk(KERN_INFO "Routing QSW NAL loaded on node %d of %d "
- "(Routing %s, initial mem %d)\n",
- kqswnal_data.kqn_elanid, kqswnal_data.kqn_nnodes,
- kpr_routing (&kqswnal_data.kqn_router) ? "enabled" : "disabled",
- pkmem);
+void __exit
+kqswnal_finalise (void)
+{
+ lnet_unregister_lnd(&the_kqswlnd);
+ kqswnal_tunables_fini();
+}
+
+static int __init
+kqswnal_initialise (void)
+{
+ int rc = kqswnal_tunables_init();
+
+ if (rc != 0)
+ return rc;
+ lnet_register_lnd(&the_kqswlnd);
return (0);
}
-
-MODULE_AUTHOR("W. Marcus Miller <marcusm@llnl.gov>");
-MODULE_DESCRIPTION("Kernel Quadrics Switch NAL v1.00");
+MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
+MODULE_DESCRIPTION("Kernel Quadrics/Elan LND v1.01");
MODULE_LICENSE("GPL");
module_init (kqswnal_initialise);
module_exit (kqswnal_finalise);
-
-EXPORT_SYMBOL (kqswnal_ni);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff