#include <linux/module.h>
#include <linux/kernel.h>
+#define DEBUG_SUBSYSTEM S_RPC
+
#include <linux/obd_support.h>
+#include <linux/obd_class.h>
#include <linux/lustre_net.h>
-static ptl_handle_eq_t req_eq, bulk_source_eq, bulk_sink_eq;
-
-/* This callback performs two functions:
- *
- * 1. Free the request buffer after it has gone out on the wire
- * 2. Wake up the thread waiting for the reply once it comes in.
- */
-static int request_callback(ptl_event_t *ev, void *data)
-{
- struct ptlrpc_request *rpc = ev->mem_desc.user_ptr;
-
- ENTRY;
-
- if (ev->type == PTL_EVENT_SENT) {
- kfree(ev->mem_desc.start);
- } else if (ev->type == PTL_EVENT_PUT) {
- rpc->rq_repbuf = ev->mem_desc.start + ev->offset;
- wake_up_interruptible(&rpc->rq_wait_for_rep);
- }
-
- EXIT;
- return 1;
-}
-
-static int incoming_callback(ptl_event_t *ev, void *data)
-{
- struct ptlrpc_service *service = data;
-
- ENTRY;
-
- if (ev->type == PTL_EVENT_PUT) {
- wake_up(service->srv_wait_queue);
- } else {
- printk("Unexpected event type: %d\n", ev->type);
- }
-
- EXIT;
- return 0;
-}
-
-static int bulk_source_callback(ptl_event_t *ev, void *data)
-{
- struct ptlrpc_request *rpc = ev->mem_desc.user_ptr;
-
- ENTRY;
-
- if (ev->type == PTL_EVENT_SENT) {
- ;
- } else if (ev->type == PTL_EVENT_ACK) {
- wake_up_interruptible(&rpc->rq_wait_for_bulk);
- } else {
- printk("Unexpected event type in " __FUNCTION__ "!\n");
- }
-
- EXIT;
- return 1;
-}
-
-static int bulk_sink_callback(ptl_event_t *ev, void *data)
-{
- struct ptlrpc_request *rpc = ev->mem_desc.user_ptr;
-
- ENTRY;
-
- if (ev->type == PTL_EVENT_PUT) {
- if (rpc->rq_bulkbuf != ev->mem_desc.start + ev->offset)
- printk(__FUNCTION__ ": bulkbuf != mem_desc -- why?\n");
- wake_up_interruptible(&rpc->rq_wait_for_bulk);
- } else {
- printk("Unexpected event type in " __FUNCTION__ "!\n");
- }
-
- EXIT;
- return 1;
-}
-
-int ptl_send_buf(struct ptlrpc_request *request, struct lustre_peer *peer,
- int portal, int is_request)
-{
- int rc;
- ptl_process_id_t remote_id;
- ptl_handle_md_t md_h;
-
- /* FIXME: This is bad. */
- if (request->rq_bulklen) {
- request->rq_req_md.start = request->rq_bulkbuf;
- request->rq_req_md.length = request->rq_bulklen;
- request->rq_req_md.eventq = bulk_source_eq;
- } else if (is_request) {
- request->rq_req_md.start = request->rq_reqbuf;
- request->rq_req_md.length = request->rq_reqlen;
- request->rq_req_md.eventq = req_eq;
- } else {
- request->rq_req_md.start = request->rq_repbuf;
- request->rq_req_md.length = request->rq_replen;
- request->rq_req_md.eventq = req_eq;
- }
- request->rq_req_md.threshold = 1;
- request->rq_req_md.options = PTL_MD_OP_PUT;
- request->rq_req_md.user_ptr = request;
-
- rc = PtlMDBind(peer->peer_ni, request->rq_req_md, &md_h);
- if (rc != 0) {
- printk(__FUNCTION__ ": PtlMDBind failed: %d\n", rc);
- return rc;
- }
-
- remote_id.addr_kind = PTL_ADDR_NID;
- remote_id.nid = peer->peer_nid;
- remote_id.pid = 0;
-
- if (request->rq_bulklen) {
- rc = PtlPut(md_h, PTL_ACK_REQ, remote_id, portal, 0,
- request->rq_xid, 0, 0);
- } else {
- rc = PtlPut(md_h, PTL_NOACK_REQ, remote_id, portal, 0,
- request->rq_xid, 0, 0);
- }
- if (rc != PTL_OK) {
- printk(__FUNCTION__ ": PtlPut failed: %d\n", rc);
- /* FIXME: tear down md */
- }
-
- return rc;
-}
-
-int ptl_send_rpc(struct ptlrpc_request *request, struct lustre_peer *peer)
-{
- ptl_handle_me_t me_h, bulk_me_h;
- ptl_process_id_t local_id;
- int rc;
-
- ENTRY;
-
- if (request->rq_replen == 0) {
- printk(__FUNCTION__ ": request->rq_replen is 0!\n");
- EXIT;
- return -EINVAL;
- }
-
- request->rq_repbuf = kmalloc(request->rq_replen, GFP_KERNEL);
- if (!request->rq_repbuf) {
- EXIT;
- return -ENOMEM;
- }
-
- local_id.addr_kind = PTL_ADDR_GID;
- local_id.gid = PTL_ID_ANY;
- local_id.rid = PTL_ID_ANY;
-
- rc = PtlMEAttach(peer->peer_ni, request->rq_reply_portal, local_id,
- request->rq_xid, 0, PTL_UNLINK, &me_h);
- if (rc != PTL_OK) {
- EXIT;
- /* FIXME: tear down EQ, free reqbuf */
- return rc;
- }
-
- request->rq_reply_md.start = request->rq_repbuf;
- request->rq_reply_md.length = request->rq_replen;
- request->rq_reply_md.threshold = 1;
- request->rq_reply_md.options = PTL_MD_OP_PUT;
- request->rq_reply_md.user_ptr = request;
- request->rq_reply_md.eventq = req_eq;
-
- rc = PtlMDAttach(me_h, request->rq_reply_md, PTL_UNLINK,
- &request->rq_reply_md_h);
- if (rc != PTL_OK) {
- EXIT;
- return rc;
- }
-
- if (request->rq_bulklen != 0) {
- rc = PtlMEAttach(peer->peer_ni, request->rq_bulk_portal,
- local_id, request->rq_xid, 0, PTL_UNLINK,
- &bulk_me_h);
- if (rc != PTL_OK) {
- EXIT;
- return rc;
- }
-
- request->rq_bulk_md.start = request->rq_bulkbuf;
- request->rq_bulk_md.length = request->rq_bulklen;
- request->rq_bulk_md.threshold = 1;
- request->rq_bulk_md.options = PTL_MD_OP_PUT;
- request->rq_bulk_md.user_ptr = request;
- request->rq_bulk_md.eventq = bulk_sink_eq;
-
- rc = PtlMDAttach(bulk_me_h, request->rq_bulk_md, PTL_UNLINK,
- &request->rq_bulk_md_h);
- if (rc != PTL_OK) {
- EXIT;
- return rc;
- }
- }
-
- return ptl_send_buf(request, peer, request->rq_req_portal, 1);
-}
-
-int rpc_register_service(struct ptlrpc_service *service, char *uuid)
-{
- struct lustre_peer peer;
- int rc;
-
- rc = kportal_uuid_to_peer(uuid, &peer);
- if (rc != 0) {
- printk("Invalid uuid \"%s\"\n", uuid);
- return -EINVAL;
- }
-
- service->srv_buf = kmalloc(service->srv_buf_size, GFP_KERNEL);
- if (service->srv_buf == NULL) {
- printk(__FUNCTION__ ": no memory\n");
- return -ENOMEM;
- }
-
- service->srv_id.addr_kind = PTL_ADDR_GID;
- service->srv_id.gid = PTL_ID_ANY;
- service->srv_id.rid = PTL_ID_ANY;
- rc = PtlMEAttach(peer.peer_ni, service->srv_portal, service->srv_id,
- 0, ~0, PTL_RETAIN, &service->srv_me_h);
- if (rc != PTL_OK) {
- printk("PtlMEAttach failed: %d\n", rc);
- return rc;
- }
+extern int ptlrpc_init_portals(void);
+extern void ptlrpc_exit_portals(void);
- rc = PtlEQAlloc(peer.peer_ni, 128, incoming_callback, service,
- &service->srv_eq_h);
- if (rc != PTL_OK) {
- printk("PtlEQAlloc failed: %d\n", rc);
- return rc;
- }
- /* FIXME: Build an auto-unlinking MD and build a ring. */
- /* FIXME: Make sure that these are reachable by DMA on well-known
- * addresses. */
- service->srv_md.start = service->srv_buf;
- service->srv_md.length = service->srv_buf_size;
- service->srv_md.threshold = PTL_MD_THRESH_INF;
- service->srv_md.options = PTL_MD_OP_PUT;
- service->srv_md.user_ptr = service;
- service->srv_md.eventq = service->srv_eq_h;
-
- rc = PtlMDAttach(service->srv_me_h, service->srv_md,
- PTL_RETAIN, &service->srv_md_h);
- if (rc != PTL_OK) {
- printk("PtlMDAttach failed: %d\n", rc);
- /* FIXME: wow, we need to clean up. */
- return rc;
- }
-
- return 0;
-}
-
-int rpc_unregister_service(struct ptlrpc_service *service)
-{
- int rc;
-
- rc = PtlMDUnlink(service->srv_md_h);
- if (rc)
- printk(__FUNCTION__ ": PtlMDUnlink failed: %d\n", rc);
- rc = PtlEQFree(service->srv_eq_h);
- if (rc)
- printk(__FUNCTION__ ": PtlEQFree failed: %d\n", rc);
- rc = PtlMEUnlink(service->srv_me_h);
- if (rc)
- printk(__FUNCTION__ ": PtlMEUnlink failed: %d\n", rc);
-
- kfree(service->srv_buf);
- return 0;
-}
-
-static int req_init_portals(void)
+static int __init ptlrpc_init(void)
{
- int rc;
- const ptl_handle_ni_t *nip;
- ptl_handle_ni_t ni;
-
- nip = inter_module_get_request(LUSTRE_NAL "_ni", LUSTRE_NAL);
- if (nip == NULL) {
- printk("get_ni failed: is the NAL module loaded?\n");
- return -EIO;
- }
- ni = *nip;
-
- rc = PtlEQAlloc(ni, 128, request_callback, NULL, &req_eq);
- if (rc != PTL_OK)
- printk("PtlEQAlloc failed: %d\n", rc);
-
- rc = PtlEQAlloc(ni, 128, bulk_source_callback, NULL, &bulk_source_eq);
- if (rc != PTL_OK)
- printk("PtlEQAlloc failed: %d\n", rc);
-
- rc = PtlEQAlloc(ni, 128, bulk_sink_callback, NULL, &bulk_sink_eq);
- if (rc != PTL_OK)
- printk("PtlEQAlloc failed: %d\n", rc);
-
- return rc;
+ return ptlrpc_init_portals();
}
-static int init_module(void)
+static void __exit ptlrpc_exit(void)
{
- return req_init_portals();
-}
-
-static void cleanup_module(void)
-{
- PtlEQFree(req_eq);
-
- inter_module_put(LUSTRE_NAL "_ni");
+ ptlrpc_exit_portals();
return;
}
MODULE_DESCRIPTION("Lustre Request Processor v1.0");
MODULE_LICENSE("GPL");
+module_init(ptlrpc_init);
+module_exit(ptlrpc_exit);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff