#include <linux/config.h>
#include <linux/module.h>
#include <linux/kernel.h>
+#include <linux/list.h>
#define DEBUG_SUBSYSTEM S_RPC
#include <linux/obd_class.h>
#include <linux/lustre_net.h>
-int ptlrpc_enqueue(struct ptlrpc_client *peer, struct ptlrpc_request *req)
+void ptlrpc_init_client(int dev, int req_portal, int rep_portal,
+ struct ptlrpc_client *cl)
{
- struct ptlrpc_request *srv_req;
-
- if (!peer->cli_obd) {
- EXIT;
- return -1;
- }
-
- OBD_ALLOC(srv_req, sizeof(*srv_req));
- if (!srv_req) {
- EXIT;
- return -ENOMEM;
- }
-
- CDEBUG(0, "peer obd minor %d, incoming req %p, srv_req %p\n",
- peer->cli_obd->obd_minor, req, srv_req);
-
- memset(srv_req, 0, sizeof(*req));
-
- /* move the request buffer */
- srv_req->rq_reqbuf = req->rq_reqbuf;
- srv_req->rq_reqlen = req->rq_reqlen;
- srv_req->rq_obd = peer->cli_obd;
-
- /* remember where it came from */
- srv_req->rq_reply_handle = req;
-
- list_add(&srv_req->rq_list, &peer->cli_obd->obd_req_list);
- wake_up(&peer->cli_obd->obd_req_waitq);
- return 0;
+ memset(cl, 0, sizeof(*cl));
+ spin_lock_init(&cl->cli_lock);
+ cl->cli_xid = 1;
+ cl->cli_generation = 1;
+ cl->cli_epoch = 1;
+ cl->cli_bootcount = 0;
+ cl->cli_obd = NULL;
+ cl->cli_request_portal = req_portal;
+ cl->cli_reply_portal = rep_portal;
+ INIT_LIST_HEAD(&cl->cli_sending_head);
+ INIT_LIST_HEAD(&cl->cli_sent_head);
+ sema_init(&cl->cli_rpc_sem, 32);
}
-int ptlrpc_connect_client(int dev, char *uuid, int req_portal, int rep_portal,
- req_pack_t req_pack, rep_unpack_t rep_unpack,
- struct ptlrpc_client *cl)
+int ptlrpc_connect_client(int dev, char *uuid, struct ptlrpc_client *cl)
{
- int err;
+ int err;
- memset(cl, 0, sizeof(*cl));
- spin_lock_init(&cl->cli_lock);
- cl->cli_xid = 1;
- cl->cli_obd = NULL;
- cl->cli_request_portal = req_portal;
- cl->cli_reply_portal = rep_portal;
- cl->cli_rep_unpack = rep_unpack;
- cl->cli_req_pack = req_pack;
-
- /* non networked client */
- if (dev >= 0 && dev < MAX_OBD_DEVICES) {
- struct obd_device *obd = &obd_dev[dev];
-
- if ((!obd->obd_flags & OBD_ATTACHED) ||
- (!obd->obd_flags & OBD_SET_UP)) {
- CERROR("target device %d not att or setup\n", dev);
- return -EINVAL;
- }
- if (strcmp(obd->obd_type->typ_name, "ost") &&
- strcmp(obd->obd_type->typ_name, "mds")) {
- return -EINVAL;
- }
-
- cl->cli_obd = &obd_dev[dev];
- return 0;
- }
-
- /* networked */
- err = kportal_uuid_to_peer(uuid, &cl->cli_server);
- if (err != 0) {
- CERROR("cannot find peer %s!", uuid);
- }
+ cl->cli_epoch++;
+ err = kportal_uuid_to_peer(uuid, &cl->cli_server);
+ if (err != 0)
+ CERROR("cannot find peer %s!\n", uuid);
return err;
}
OBD_ALLOC(bulk, sizeof(*bulk));
if (bulk != NULL) {
- memset(bulk, 0, sizeof(*bulk));
memcpy(&bulk->b_peer, peer, sizeof(*peer));
init_waitqueue_head(&bulk->b_waitq);
}
return bulk;
}
-struct ptlrpc_request *ptlrpc_prep_req(struct ptlrpc_client *cl,
- int opcode, int namelen, char *name,
- int tgtlen, char *tgt)
+struct ptlrpc_request *ptlrpc_prep_req(struct ptlrpc_client *cl, int opcode,
+ int count, int *lengths, char **bufs)
{
- struct ptlrpc_request *request;
- int rc;
- ENTRY;
-
- OBD_ALLOC(request, sizeof(*request));
- if (!request) {
- CERROR("request allocation out of memory\n");
- return NULL;
- }
+ struct ptlrpc_request *request;
+ int rc;
+ ENTRY;
- memset(request, 0, sizeof(*request));
+ OBD_ALLOC(request, sizeof(*request));
+ if (!request) {
+ CERROR("request allocation out of memory\n");
+ RETURN(NULL);
+ }
spin_lock(&cl->cli_lock);
- request->rq_xid = cl->cli_xid++;
+ request->rq_xid = cl->cli_xid++;
spin_unlock(&cl->cli_lock);
- rc = cl->cli_req_pack(name, namelen, tgt, tgtlen,
- &request->rq_reqhdr, &request->rq_req,
- &request->rq_reqlen, &request->rq_reqbuf);
- if (rc) {
- CERROR("cannot pack request %d\n", rc);
- return NULL;
- }
- request->rq_reqhdr->opc = opcode;
- request->rq_reqhdr->xid = request->rq_xid;
-
- EXIT;
- return request;
+ rc = lustre_pack_msg(count, lengths, bufs,
+ &request->rq_reqlen, &request->rq_reqbuf);
+ if (rc) {
+ CERROR("cannot pack request %d\n", rc);
+ RETURN(NULL);
+ }
+ request->rq_type = PTL_RPC_REQUEST;
+ request->rq_reqmsg = (struct lustre_msg *)request->rq_reqbuf;
+ request->rq_reqmsg->opc = HTON__u32(opcode);
+ request->rq_reqmsg->xid = HTON__u32(request->rq_xid);
+ request->rq_reqmsg->type = HTON__u32(request->rq_type);
+
+ RETURN(request);
}
void ptlrpc_free_req(struct ptlrpc_request *request)
{
- OBD_FREE(request, sizeof(*request));
+ if (request == NULL)
+ return;
+
+ if (request->rq_repbuf != NULL)
+ OBD_FREE(request->rq_repbuf, request->rq_replen);
+ OBD_FREE(request, sizeof(*request));
}
static int ptlrpc_check_reply(struct ptlrpc_request *req)
{
+ int rc = 0;
+
if (req->rq_repbuf != NULL) {
req->rq_flags = PTL_RPC_REPLY;
- EXIT;
- return 1;
+ GOTO(out, rc = 1);
}
if (sigismember(&(current->pending.signal), SIGKILL) ||
- sigismember(&(current->pending.signal), SIGINT)) {
+ sigismember(&(current->pending.signal), SIGTERM) ||
+ sigismember(&(current->pending.signal), SIGINT)) {
req->rq_flags = PTL_RPC_INTR;
- EXIT;
- return 1;
+ GOTO(out, rc = 1);
}
- return 0;
+ out:
+ return rc;
+}
+
+int ptlrpc_check_status(struct ptlrpc_request *req, int err)
+{
+ ENTRY;
+
+ if (err != 0) {
+ CERROR("err is %d\n", err);
+ RETURN(err);
+ }
+
+ if (req == NULL) {
+ CERROR("req == NULL\n");
+ RETURN(-ENOMEM);
+ }
+
+ if (req->rq_repmsg == NULL) {
+ CERROR("req->rq_repmsg == NULL\n");
+ RETURN(-ENOMEM);
+ }
+
+ if (req->rq_repmsg->status != 0) {
+ CERROR("req->rq_repmsg->status is %d\n",
+ req->rq_repmsg->status);
+ /* XXX: translate this error from net to host */
+ RETURN(req->rq_repmsg->status);
+ }
+
+ RETURN(0);
+}
+
+static void ptlrpc_cleanup_request_buf(struct ptlrpc_request *request)
+{
+ OBD_FREE(request->rq_reqbuf, request->rq_reqlen);
+ request->rq_reqbuf = NULL;
+ request->rq_reqlen = 0;
}
/* Abort this request and cleanup any resources associated with it. */
-int ptlrpc_abort(struct ptlrpc_request *request)
+static int ptlrpc_abort(struct ptlrpc_request *request)
{
- /* First remove the MD for the reply; in theory, this means
+ /* First remove the ME for the reply; in theory, this means
* that we can tear down the buffer safely. */
PtlMEUnlink(request->rq_reply_me_h);
- PtlMDUnlink(request->rq_reply_md_h);
- OBD_FREE(request->rq_repbuf, request->rq_replen);
+ OBD_FREE(request->rq_reply_md.start, request->rq_replen);
request->rq_repbuf = NULL;
request->rq_replen = 0;
-
return 0;
}
int ptlrpc_queue_wait(struct ptlrpc_client *cl, struct ptlrpc_request *req)
-
{
- int rc;
+ int rc = 0;
ENTRY;
- init_waitqueue_head(&req->rq_wait_for_rep);
-
- if (cl->cli_obd) {
- /* Local delivery */
- ENTRY;
- rc = ptlrpc_enqueue(cl, req);
- } else {
- /* Remote delivery via portals. */
- req->rq_req_portal = cl->cli_request_portal;
- req->rq_reply_portal = cl->cli_reply_portal;
- rc = ptl_send_rpc(req, &cl->cli_server);
- }
- if (rc) {
- CERROR("error %d, opcode %d\n", rc, req->rq_reqhdr->opc);
- return -rc;
- }
-
- CDEBUG(0, "-- sleeping\n");
+ init_waitqueue_head(&req->rq_wait_for_rep);
+
+ req->rq_client = cl;
+ req->rq_req_portal = cl->cli_request_portal;
+ req->rq_reply_portal = cl->cli_reply_portal;
+ rc = ptl_send_rpc(req, cl);
+ if (rc) {
+ CERROR("error %d, opcode %d\n", rc, req->rq_reqmsg->opc);
+ ptlrpc_cleanup_request_buf(req);
+ up(&cl->cli_rpc_sem);
+ RETURN(-rc);
+ }
+
+ CDEBUG(D_OTHER, "-- sleeping\n");
wait_event_interruptible(req->rq_wait_for_rep, ptlrpc_check_reply(req));
- CDEBUG(0, "-- done\n");
-
- if (req->rq_flags == PTL_RPC_INTR) {
+ CDEBUG(D_OTHER, "-- done\n");
+ ptlrpc_cleanup_request_buf(req);
+ up(&cl->cli_rpc_sem);
+ if (req->rq_flags == PTL_RPC_INTR) {
/* Clean up the dangling reply buffers */
ptlrpc_abort(req);
- EXIT;
- return -EINTR;
+ GOTO(out, rc = -EINTR);
}
- if (req->rq_flags != PTL_RPC_REPLY) {
+ if (req->rq_flags != PTL_RPC_REPLY) {
CERROR("Unknown reason for wakeup\n");
- EXIT;
- return -EINTR;
+ /* XXX Phil - I end up here when I kill obdctl */
+ ptlrpc_abort(req);
+ GOTO(out, rc = -EINTR);
}
- rc = cl->cli_rep_unpack(req->rq_repbuf, req->rq_replen,
- &req->rq_rephdr, &req->rq_rep);
- if (rc) {
- CERROR("unpack_rep failed: %d\n", rc);
- return rc;
- }
- CERROR("got rep %d\n", req->rq_rephdr->xid);
+ rc = lustre_unpack_msg(req->rq_repbuf, req->rq_replen);
+ req->rq_repmsg = (struct lustre_msg *)req->rq_repbuf;
+ if (rc) {
+ CERROR("unpack_rep failed: %d\n", rc);
+ GOTO(out, rc);
+ }
+ CDEBUG(D_NET, "got rep %d\n", req->rq_repmsg->xid);
- if ( req->rq_rephdr->status == 0 )
- CDEBUG(0, "--> buf %p len %d status %d\n", req->rq_repbuf,
- req->rq_replen, req->rq_rephdr->status);
+ if (req->rq_repmsg->status == 0)
+ CDEBUG(D_NET, "--> buf %p len %d status %d\n", req->rq_repbuf,
+ req->rq_replen, req->rq_repmsg->status);
- EXIT;
- return 0;
+ EXIT;
+ out:
+ return rc;
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff