/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=8:tabstop=8:
*
- * Copyright (C) 2002 Cluster File Systems, Inc.
+ * Copyright (c) 2002, 2003 Cluster File Systems, Inc.
*
* This file is part of Lustre, http://www.lustre.org.
*
#define DEBUG_SUBSYSTEM S_RPC
+#ifdef __KERNEL__
#include <linux/module.h>
-#include <linux/obd_support.h>
+#else
+#include <liblustre.h>
+#endif
+#include <linux/obd_class.h>
#include <linux/lustre_net.h>
-ptl_handle_eq_t request_out_eq, reply_in_eq, reply_out_eq, bulk_source_eq,
- bulk_sink_eq;
-static const ptl_handle_ni_t *socknal_nip = NULL, *qswnal_nip = NULL;
+struct ptlrpc_ni ptlrpc_interfaces[NAL_MAX_NR];
+int ptlrpc_ninterfaces;
/*
* Free the packet when it has gone out
*/
static int request_out_callback(ptl_event_t *ev)
{
+ struct ptlrpc_request *req = ev->mem_desc.user_ptr;
ENTRY;
+ /* requests always contiguous */
+ LASSERT((ev->mem_desc.options & (PTL_MD_IOV | PTL_MD_KIOV)) == 0);
+
if (ev->type != PTL_EVENT_SENT) {
// XXX make sure we understand all events, including ACK's
CERROR("Unknown event %d\n", ev->type);
LBUG();
}
+ /* this balances the atomic_inc in ptl_send_rpc() */
+ ptlrpc_req_finished(req);
RETURN(1);
}
-
/*
* Free the packet when it has gone out
*/
static int reply_out_callback(ptl_event_t *ev)
{
+ struct ptlrpc_request *req = ev->mem_desc.user_ptr;
+ unsigned long flags;
ENTRY;
+ /* replies always contiguous */
+ LASSERT((ev->mem_desc.options & (PTL_MD_IOV | PTL_MD_KIOV)) == 0);
+
if (ev->type == PTL_EVENT_SENT) {
+ /* NB don't even know if this is the current reply! In fact
+ * we can't touch any state in the request, since the
+ * service handler zeros it on each incoming request. */
OBD_FREE(ev->mem_desc.start, ev->mem_desc.length);
+ } else if (ev->type == PTL_EVENT_ACK) {
+ LASSERT(req->rq_want_ack);
+ spin_lock_irqsave(&req->rq_lock, flags);
+ req->rq_want_ack = 0;
+ wake_up(&req->rq_wait_for_rep);
+ spin_unlock_irqrestore(&req->rq_lock, flags);
} else {
- // XXX make sure we understand all events, including ACK's
+ // XXX make sure we understand all events
CERROR("Unknown event %d\n", ev->type);
LBUG();
}
/*
* Wake up the thread waiting for the reply once it comes in.
*/
-static int reply_in_callback(ptl_event_t *ev)
+int reply_in_callback(ptl_event_t *ev)
{
struct ptlrpc_request *req = ev->mem_desc.user_ptr;
+ unsigned long flags;
ENTRY;
+ /* replies always contiguous */
+ LASSERT((ev->mem_desc.options & (PTL_MD_IOV | PTL_MD_KIOV)) == 0);
+
if (req->rq_xid == 0x5a5a5a5a5a5a5a5a) {
CERROR("Reply received for freed request! Probably a missing "
"ptlrpc_abort()\n");
if (req->rq_xid != ev->match_bits) {
CERROR("Reply packet for wrong request\n");
- LBUG();
+ LBUG();
}
if (ev->type == PTL_EVENT_PUT) {
- req->rq_repmsg = ev->mem_desc.start + ev->offset;
- barrier();
- wake_up(&req->rq_wait_for_rep);
+ /* Bug 1190: should handle non-zero offset as a protocol
+ * error */
+ LASSERT (ev->offset == 0);
+
+ spin_lock_irqsave (&req->rq_lock, flags);
+ LASSERT (req->rq_receiving_reply);
+ req->rq_receiving_reply = 0;
+ req->rq_replied = 1;
+ if (req->rq_set != NULL)
+ wake_up(&req->rq_set->set_waitq);
+ else
+ wake_up(&req->rq_wait_for_rep);
+ spin_unlock_irqrestore (&req->rq_lock, flags);
} else {
- // XXX make sure we understand all events, including ACK's
+ // XXX make sure we understand all events, including ACKs
CERROR("Unknown event %d\n", ev->type);
LBUG();
}
int request_in_callback(ptl_event_t *ev)
{
- struct ptlrpc_service *service = ev->mem_desc.user_ptr;
+ struct ptlrpc_request_buffer_desc *rqbd = ev->mem_desc.user_ptr;
+ struct ptlrpc_srv_ni *srv_ni = rqbd->rqbd_srv_ni;
+ struct ptlrpc_service *service = srv_ni->sni_service;
+
+ /* requests always contiguous */
+ LASSERT((ev->mem_desc.options & (PTL_MD_IOV | PTL_MD_KIOV)) == 0);
+ /* we only enable puts */
+ LASSERT(ev->type == PTL_EVENT_PUT);
+ LASSERT(atomic_read(&srv_ni->sni_nrqbds_receiving) > 0);
+ LASSERT(atomic_read(&rqbd->rqbd_refcount) > 0);
if (ev->rlength != ev->mlength)
CERROR("Warning: Possibly truncated rpc (%d/%d)\n",
ev->mlength, ev->rlength);
- if (ev->type == PTL_EVENT_PUT)
- wake_up(&service->srv_waitq);
- else
- CERROR("Unexpected event type: %d\n", ev->type);
+ if (!PtlHandleEqual (ev->unlinked_me, PTL_HANDLE_NONE)) {
+ /* This is the last request to be received into this
+ * request buffer. We don't bump the refcount, since the
+ * thread servicing this event is effectively taking over
+ * portals' reference.
+ */
+ /* NB ev->unlinked_me.nal_idx is not set properly in a callback */
+ LASSERT(ev->unlinked_me.cookie==rqbd->rqbd_me_h.cookie);
+
+ /* we're off the air */
+ /* we'll probably start dropping packets in portals soon */
+ if (atomic_dec_and_test(&srv_ni->sni_nrqbds_receiving))
+ CERROR("All request buffers busy\n");
+ } else {
+ /* +1 ref for service thread */
+ atomic_inc(&rqbd->rqbd_refcount);
+ }
+
+ wake_up(&service->srv_waitq);
return 0;
}
-static int bulk_source_callback(ptl_event_t *ev)
+static int bulk_put_source_callback(ptl_event_t *ev)
{
- struct ptlrpc_bulk_page *bulk = ev->mem_desc.user_ptr;
- struct ptlrpc_bulk_desc *desc = bulk->b_desc;
+ unsigned long flags;
+ struct ptlrpc_bulk_desc *desc = ev->mem_desc.user_ptr;
ENTRY;
- if (ev->type == PTL_EVENT_SENT) {
- CDEBUG(D_NET, "got SENT event\n");
- } else if (ev->type == PTL_EVENT_ACK) {
- CDEBUG(D_NET, "got ACK event\n");
- if (bulk->b_cb != NULL)
- bulk->b_cb(bulk);
- if (atomic_dec_and_test(&desc->b_pages_remaining)) {
- desc->b_flags |= PTL_BULK_FL_SENT;
- wake_up(&desc->b_waitq);
- if (desc->b_cb != NULL)
- desc->b_cb(desc, desc->b_cb_data);
- }
- } else {
- CERROR("Unexpected event type!\n");
- LBUG();
+ CDEBUG(D_NET, "got %s event %d\n",
+ (ev->type == PTL_EVENT_SENT) ? "SENT" :
+ (ev->type == PTL_EVENT_ACK) ? "ACK" : "UNEXPECTED", ev->type);
+
+ LASSERT(ev->type == PTL_EVENT_SENT || ev->type == PTL_EVENT_ACK);
+
+ /* 1 fragment for each page always */
+ LASSERT(ev->mem_desc.niov == desc->bd_page_count);
+
+ spin_lock_irqsave (&desc->bd_lock, flags);
+
+ LASSERT(desc->bd_callback_count > 0 &&
+ desc->bd_callback_count <= 2);
+
+ if (--desc->bd_callback_count == 0) {
+ desc->bd_network_rw = 0;
+ desc->bd_complete = 1;
+ wake_up(&desc->bd_waitq);
}
- RETURN(1);
+ spin_unlock_irqrestore (&desc->bd_lock, flags);
+ RETURN(0);
}
-static int bulk_sink_callback(ptl_event_t *ev)
+struct ptlrpc_bulk_desc ptlrpc_bad_desc;
+ptl_event_t ptlrpc_bad_event;
+
+static int bulk_put_sink_callback(ptl_event_t *ev)
{
- struct ptlrpc_bulk_page *bulk = ev->mem_desc.user_ptr;
- struct ptlrpc_bulk_desc *desc = bulk->b_desc;
+ struct ptlrpc_bulk_desc *desc = ev->mem_desc.user_ptr;
+ unsigned long flags;
ENTRY;
- if (ev->type == PTL_EVENT_PUT) {
- if (bulk->b_buf != ev->mem_desc.start + ev->offset)
- CERROR("bulkbuf != mem_desc -- why?\n");
- if (bulk->b_cb != NULL)
- bulk->b_cb(bulk);
- if (atomic_dec_and_test(&desc->b_pages_remaining)) {
- desc->b_flags |= PTL_BULK_FL_RCVD;
- wake_up(&desc->b_waitq);
- if (desc->b_cb != NULL)
- desc->b_cb(desc, desc->b_cb_data);
- }
- } else {
- CERROR("Unexpected event type!\n");
- LBUG();
+ LASSERT(ev->type == PTL_EVENT_PUT);
+
+ /* used iovs */
+ LASSERT((ev->mem_desc.options & (PTL_MD_IOV | PTL_MD_KIOV)) ==
+ PTL_MD_KIOV);
+ /* Honestly, it's best to find out early. */
+ if (desc->bd_page_count == 0x5a5a5a5a5a ||
+ desc->bd_page_count != ev->mem_desc.niov ||
+ ev->mem_desc.start != &desc->bd_iov) {
+ /* not guaranteed (don't LASSERT) but good for this bug hunt */
+ ptlrpc_bad_event = *ev;
+ ptlrpc_bad_desc = *desc;
+ CERROR ("XXX ev %p type %d portal %d match "LPX64", seq %ld\n",
+ ev, ev->type, ev->portal, ev->match_bits, ev->sequence);
+ CERROR ("XXX desc %p, export %p import %p gen %d "
+ " portal %d\n",
+ desc, desc->bd_export,
+ desc->bd_import, desc->bd_import_generation,
+ desc->bd_portal);
+ RETURN (0);
+ }
+
+ LASSERT(desc->bd_page_count != 0x5a5a5a5a);
+ /* 1 fragment for each page always */
+ LASSERT(ev->mem_desc.niov == desc->bd_page_count);
+ LASSERT(ev->match_bits == desc->bd_req->rq_xid);
+
+ /* peer must put with zero offset */
+ if (ev->offset != 0) {
+ /* Bug 1190: handle this as a protocol failure */
+ CERROR ("Bad offset %d\n", ev->offset);
+ LBUG ();
}
+ /* No check for total # bytes; this could be a short read */
+
+ spin_lock_irqsave (&desc->bd_lock, flags);
+ desc->bd_network_rw = 0;
+ desc->bd_complete = 1;
+ if (desc->bd_req->rq_set != NULL)
+ wake_up (&desc->bd_req->rq_set->set_waitq);
+ else
+ wake_up (&desc->bd_req->rq_wait_for_rep);
+ spin_unlock_irqrestore (&desc->bd_lock, flags);
+
RETURN(1);
}
-int ptlrpc_init_portals(void)
+static int bulk_get_source_callback(ptl_event_t *ev)
{
- int rc;
- ptl_handle_ni_t ni;
+ struct ptlrpc_bulk_desc *desc = ev->mem_desc.user_ptr;
+ struct ptlrpc_bulk_page *bulk;
+ struct list_head *tmp;
+ unsigned long flags;
+ ptl_size_t total = 0;
+ ENTRY;
- socknal_nip = inter_module_get_request("ksocknal_ni", "ksocknal");
- qswnal_nip = inter_module_get_request("kqswnal_ni", "kqswnal");
- if (socknal_nip == NULL && qswnal_nip == NULL) {
- CERROR("get_ni failed: is a NAL module loaded?\n");
- return -EIO;
+ LASSERT(ev->type == PTL_EVENT_GET);
+
+ /* used iovs */
+ LASSERT((ev->mem_desc.options & (PTL_MD_IOV | PTL_MD_KIOV)) ==
+ PTL_MD_KIOV);
+ /* 1 fragment for each page always */
+ LASSERT(ev->mem_desc.niov == desc->bd_page_count);
+ LASSERT(ev->match_bits == desc->bd_req->rq_xid);
+
+ /* peer must get with zero offset */
+ if (ev->offset != 0) {
+ /* Bug 1190: handle this as a protocol failure */
+ CERROR ("Bad offset %d\n", ev->offset);
+ LBUG ();
}
+
+ list_for_each (tmp, &desc->bd_page_list) {
+ bulk = list_entry(tmp, struct ptlrpc_bulk_page, bp_link);
- /* Use the qswnal if it's there */
- if (qswnal_nip != NULL)
- ni = *qswnal_nip;
+ total += bulk->bp_buflen;
+ }
+
+ /* peer must get everything */
+ if (ev->mem_desc.length != total) {
+ /* Bug 1190: handle this as a protocol failure */
+ CERROR ("Bad length/total %d/%d\n", ev->mem_desc.length, total);
+ LBUG ();
+ }
+
+ spin_lock_irqsave (&desc->bd_lock, flags);
+ desc->bd_network_rw = 0;
+ desc->bd_complete = 1;
+ if (desc->bd_req->rq_set != NULL)
+ wake_up (&desc->bd_req->rq_set->set_waitq);
else
- ni = *socknal_nip;
+ wake_up (&desc->bd_req->rq_wait_for_rep);
+ spin_unlock_irqrestore (&desc->bd_lock, flags);
- rc = PtlEQAlloc(ni, 128, request_out_callback, &request_out_eq);
+ RETURN(1);
+}
+
+static int bulk_get_sink_callback(ptl_event_t *ev)
+{
+ struct ptlrpc_bulk_desc *desc = ev->mem_desc.user_ptr;
+ unsigned long flags;
+ ENTRY;
+
+ CDEBUG(D_NET, "got %s event %d\n",
+ (ev->type == PTL_EVENT_SENT) ? "SENT" :
+ (ev->type == PTL_EVENT_REPLY) ? "REPLY" : "UNEXPECTED",
+ ev->type);
+
+ LASSERT(ev->type == PTL_EVENT_SENT || ev->type == PTL_EVENT_REPLY);
+
+ /* 1 fragment for each page always */
+ LASSERT(ev->mem_desc.niov == desc->bd_page_count);
+
+ spin_lock_irqsave (&desc->bd_lock, flags);
+ LASSERT(desc->bd_callback_count > 0 &&
+ desc->bd_callback_count <= 2);
+
+ if (--desc->bd_callback_count == 0) {
+ desc->bd_network_rw = 0;
+ desc->bd_complete = 1;
+ wake_up(&desc->bd_waitq);
+ }
+ spin_unlock_irqrestore (&desc->bd_lock, flags);
+
+ RETURN(0);
+}
+
+int ptlrpc_uuid_to_peer (struct obd_uuid *uuid, struct ptlrpc_peer *peer)
+{
+ struct ptlrpc_ni *pni;
+ struct lustre_peer lpeer;
+ int i;
+ int rc = lustre_uuid_to_peer (uuid->uuid, &lpeer);
+
+ if (rc != 0)
+ RETURN (rc);
+
+ for (i = 0; i < ptlrpc_ninterfaces; i++) {
+ pni = &ptlrpc_interfaces[i];
+
+ if (!memcmp(&lpeer.peer_ni, &pni->pni_ni_h,
+ sizeof (lpeer.peer_ni))) {
+ peer->peer_nid = lpeer.peer_nid;
+ peer->peer_ni = pni;
+ return (0);
+ }
+ }
+
+ CERROR("Can't find ptlrpc interface for "LPX64" ni handle %08lx."LPX64"\n",
+ lpeer.peer_nid, lpeer.peer_ni.nal_idx, lpeer.peer_ni.cookie);
+ return (-ENOENT);
+}
+
+void ptlrpc_ni_fini(struct ptlrpc_ni *pni)
+{
+ PtlEQFree(pni->pni_request_out_eq_h);
+ PtlEQFree(pni->pni_reply_out_eq_h);
+ PtlEQFree(pni->pni_reply_in_eq_h);
+ PtlEQFree(pni->pni_bulk_put_source_eq_h);
+ PtlEQFree(pni->pni_bulk_put_sink_eq_h);
+ PtlEQFree(pni->pni_bulk_get_source_eq_h);
+ PtlEQFree(pni->pni_bulk_get_sink_eq_h);
+
+ kportal_put_ni (pni->pni_number);
+}
+
+int ptlrpc_ni_init(int number, char *name, struct ptlrpc_ni *pni)
+{
+ int rc;
+ ptl_handle_ni_t *nip = kportal_get_ni (number);
+
+ if (nip == NULL) {
+ CDEBUG (D_NET, "Network interface %s not loaded\n", name);
+ return (-ENOENT);
+ }
+
+ CDEBUG (D_NET, "init %d %s: nal_idx %ld\n", number, name, nip->nal_idx);
+
+ pni->pni_name = name;
+ pni->pni_number = number;
+ pni->pni_ni_h = *nip;
+
+ pni->pni_request_out_eq_h = PTL_HANDLE_NONE;
+ pni->pni_reply_out_eq_h = PTL_HANDLE_NONE;
+ pni->pni_reply_in_eq_h = PTL_HANDLE_NONE;
+ pni->pni_bulk_put_source_eq_h = PTL_HANDLE_NONE;
+ pni->pni_bulk_put_sink_eq_h = PTL_HANDLE_NONE;
+ pni->pni_bulk_get_source_eq_h = PTL_HANDLE_NONE;
+ pni->pni_bulk_get_sink_eq_h = PTL_HANDLE_NONE;
+
+ /* NB We never actually PtlEQGet() out of these events queues since
+ * we're only interested in the event callback, so we can just let
+ * them wrap. Their sizes aren't a big deal, apart from providing
+ * a little history for debugging... */
+
+ rc = PtlEQAlloc(pni->pni_ni_h, 1024, request_out_callback,
+ &pni->pni_request_out_eq_h);
+ if (rc != PTL_OK)
+ GOTO (fail, rc = -ENOMEM);
+
+ rc = PtlEQAlloc(pni->pni_ni_h, 1024, reply_out_callback,
+ &pni->pni_reply_out_eq_h);
+ if (rc != PTL_OK)
+ GOTO (fail, rc = -ENOMEM);
+
+ rc = PtlEQAlloc(pni->pni_ni_h, 1024, reply_in_callback,
+ &pni->pni_reply_in_eq_h);
if (rc != PTL_OK)
- CERROR("PtlEQAlloc failed: %d\n", rc);
+ GOTO (fail, rc = -ENOMEM);
- rc = PtlEQAlloc(ni, 128, reply_out_callback, &reply_out_eq);
+ rc = PtlEQAlloc(pni->pni_ni_h, 1024, bulk_put_source_callback,
+ &pni->pni_bulk_put_source_eq_h);
if (rc != PTL_OK)
- CERROR("PtlEQAlloc failed: %d\n", rc);
+ GOTO (fail, rc = -ENOMEM);
- rc = PtlEQAlloc(ni, 128, reply_in_callback, &reply_in_eq);
+ rc = PtlEQAlloc(pni->pni_ni_h, 1024, bulk_put_sink_callback,
+ &pni->pni_bulk_put_sink_eq_h);
if (rc != PTL_OK)
- CERROR("PtlEQAlloc failed: %d\n", rc);
+ GOTO (fail, rc = -ENOMEM);
- rc = PtlEQAlloc(ni, 128, bulk_source_callback, &bulk_source_eq);
+ rc = PtlEQAlloc(pni->pni_ni_h, 1024, bulk_get_source_callback,
+ &pni->pni_bulk_get_source_eq_h);
if (rc != PTL_OK)
- CERROR("PtlEQAlloc failed: %d\n", rc);
+ GOTO (fail, rc = -ENOMEM);
- rc = PtlEQAlloc(ni, 128, bulk_sink_callback, &bulk_sink_eq);
+ rc = PtlEQAlloc(pni->pni_ni_h, 1024, bulk_get_sink_callback,
+ &pni->pni_bulk_get_sink_eq_h);
if (rc != PTL_OK)
- CERROR("PtlEQAlloc failed: %d\n", rc);
+ GOTO (fail, rc = -ENOMEM);
+
+ return (0);
+ fail:
+ CERROR ("Failed to initialise network interface %s: %d\n",
+ name, rc);
+
+ /* OK to do complete teardown since we invalidated the handles above */
+ ptlrpc_ni_fini (pni);
+ return (rc);
+}
- return rc;
+int ptlrpc_init_portals(void)
+{
+ /* Add new portals network interfaces here.
+ * Order is irrelevent! */
+ static struct {
+ int number;
+ char *name;
+ } ptl_nis[] = {
+ {QSWNAL, "qswnal"},
+ {SOCKNAL, "socknal"},
+ {GMNAL, "gmnal"},
+ {TOENAL, "toenal"},
+ {TCPNAL, "tcpnal"},
+ {SCIMACNAL, "scimacnal"}};
+ int rc;
+ int i;
+
+ LASSERT(ptlrpc_ninterfaces == 0);
+
+ for (i = 0; i < sizeof (ptl_nis) / sizeof (ptl_nis[0]); i++) {
+ LASSERT(ptlrpc_ninterfaces < (sizeof(ptlrpc_interfaces) /
+ sizeof(ptlrpc_interfaces[0])));
+
+ rc = ptlrpc_ni_init(ptl_nis[i].number, ptl_nis[i].name,
+ &ptlrpc_interfaces[ptlrpc_ninterfaces]);
+ if (rc == 0)
+ ptlrpc_ninterfaces++;
+ }
+
+ if (ptlrpc_ninterfaces == 0) {
+ CERROR("network initialisation failed: is a NAL module "
+ "loaded?\n");
+ return -EIO;
+ }
+ return 0;
}
void ptlrpc_exit_portals(void)
{
- PtlEQFree(request_out_eq);
- PtlEQFree(reply_out_eq);
- PtlEQFree(reply_in_eq);
- PtlEQFree(bulk_source_eq);
- PtlEQFree(bulk_sink_eq);
-
- if (qswnal_nip != NULL)
- inter_module_put("kqswnal_ni");
- if (socknal_nip != NULL)
- inter_module_put("ksocknal_ni");
+ while (ptlrpc_ninterfaces > 0)
+ ptlrpc_ni_fini (&ptlrpc_interfaces[--ptlrpc_ninterfaces]);
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff