/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- * vim:expandtab:shiftwidth=8:tabstop=8: * * Copyright (C) 2002 Cluster File Systems, Inc. * * This file is part of Lustre, http://www.lustre.org. * * Lustre 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. * * Lustre 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. * * You should have received a copy of the GNU General Public License * along with Lustre; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * */ #ifndef _LUSTRE_NET_H #define _LUSTRE_NET_H #include #include #include #include #include /* FOO_REQUEST_PORTAL is for incoming requests on the FOO * FOO_REPLY_PORTAL is for incoming replies on the FOO * FOO_BULK_PORTAL is for incoming bulk on the FOO */ #define OSC_REQUEST_PORTAL 1 #define OSC_REPLY_PORTAL 2 #define OSC_BULK_PORTAL 3 #define OST_REQUEST_PORTAL 4 #define OST_REPLY_PORTAL 5 #define OST_BULK_PORTAL 6 #define MDC_REQUEST_PORTAL 7 #define MDC_REPLY_PORTAL 8 #define MDC_BULK_PORTAL 9 #define MDS_REQUEST_PORTAL 10 #define MDS_REPLY_PORTAL 11 #define MDS_BULK_PORTAL 12 /* default rpc ring length */ #define RPC_RING_LENGTH 2 /* generic wrappable next */ #define NEXT_INDEX(index, max) (((index+1) >= max) ? 0 : (index+1)) #define SVC_STOPPING 1 #define SVC_RUNNING 2 #define SVC_STOPPED 4 #define SVC_KILLED 8 #define SVC_EVENT 16 #define SVC_LIST 32 #define SVC_SIGNAL 64 typedef int (*rep_unpack_t)(char *, int, struct ptlrep_hdr **, union ptl_rep *); typedef int (*req_pack_t)(char *, int, char *, int, struct ptlreq_hdr **, union ptl_req*, int *, char **); typedef int (*req_unpack_t)(char *buf, int len, struct ptlreq_hdr **, union ptl_req *); typedef int (*rep_pack_t)(char *buf1, int len1, char *buf2, int len2, struct ptlrep_hdr **, union ptl_rep*, int *replen, char **repbuf); struct ptlrpc_client { struct lustre_peer cli_server; struct obd_device *cli_obd; __u32 cli_request_portal; __u32 cli_reply_portal; rep_unpack_t cli_rep_unpack; req_pack_t cli_req_pack; spinlock_t cli_lock; __u32 cli_xid; }; /* These do double-duty in rq_type and rq_flags */ #define PTL_RPC_INTR 1 #define PTL_RPC_REQUEST 2 #define PTL_RPC_REPLY 3 #define PTL_RPC_BULK 4 #define PTL_RPC_SENT 5 #define PTL_BULK_SENT 6 #define PTL_BULK_RCVD 6 struct ptlrpc_request { int rq_type; /* one of PTL_RPC_REQUEST, PTL_RPC_REPLY, PTL_RPC_BULK */ struct list_head rq_list; struct obd_device *rq_obd; int rq_status; int rq_flags; __u32 rq_connid; __u32 rq_xid; char *rq_reqbuf; int rq_reqlen; struct ptlreq_hdr *rq_reqhdr; union ptl_req rq_req; char *rq_repbuf; int rq_replen; struct ptlrep_hdr *rq_rephdr; union ptl_rep rq_rep; char *rq_bulkbuf; int rq_bulklen; void * rq_reply_handle; wait_queue_head_t rq_wait_for_rep; /* incoming reply */ ptl_md_t rq_reply_md; ptl_handle_md_t rq_reply_md_h; ptl_handle_me_t rq_reply_me_h; /* outgoing req/rep */ ptl_md_t rq_req_md; ptl_handle_md_t rq_req_md_h; __u32 rq_reply_portal; __u32 rq_req_portal; struct lustre_peer rq_peer; }; struct ptlrpc_bulk_desc { int b_flags; struct lustre_peer b_peer; __u32 b_portal; char *b_buf; int b_buflen; int (*b_cb)(struct ptlrpc_request *, void *); __u32 b_xid; wait_queue_head_t b_waitq; ptl_md_t b_md; ptl_handle_md_t b_md_h; ptl_handle_me_t b_me_h; }; struct ptlrpc_service { /* incoming request buffers */ /* FIXME: perhaps a list of EQs, if multiple NIs are used? */ char *srv_buf[RPC_RING_LENGTH]; __u32 srv_buf_size; __u32 srv_me_active; __u32 srv_me_tail; __u32 srv_md_active; __u32 srv_ring_length; __u32 srv_req_portal; __u32 srv_rep_portal; __u32 srv_ref_count[RPC_RING_LENGTH]; ptl_handle_me_t srv_me_h[RPC_RING_LENGTH]; ptl_process_id_t srv_id; ptl_md_t srv_md[RPC_RING_LENGTH]; ptl_handle_md_t srv_md_h[RPC_RING_LENGTH]; __u32 srv_xid; /* event queue */ ptl_handle_eq_t srv_eq_h; __u32 srv_flags; struct lustre_peer srv_self; struct task_struct *srv_thread; wait_queue_head_t srv_waitq; wait_queue_head_t srv_ctl_waitq; int ost_flags; spinlock_t srv_lock; struct list_head srv_reqs; ptl_event_t srv_ev; req_unpack_t srv_req_unpack; rep_pack_t srv_rep_pack; int (*srv_handler)(struct obd_device *obddev, struct ptlrpc_service *svc, struct ptlrpc_request *req); }; typedef int (*svc_handler_t)(struct obd_device *obddev, struct ptlrpc_service *svc, struct ptlrpc_request *req); /* rpc/niobuf.c */ int ptlrpc_check_bulk_sent(struct ptlrpc_bulk_desc *); int ptlrpc_send_bulk(struct ptlrpc_bulk_desc *, int portal); int ptl_send_buf(struct ptlrpc_request *, struct lustre_peer *, int portal); int ptlrpc_wait_bulk(struct ptlrpc_bulk_desc *); int ptlrpc_reply(struct obd_device *obddev, struct ptlrpc_service *svc, struct ptlrpc_request *req); int ptlrpc_error(struct obd_device *obddev, struct ptlrpc_service *svc, struct ptlrpc_request *req); int ptl_send_rpc(struct ptlrpc_request *request, struct lustre_peer *peer); int ptl_received_rpc(struct ptlrpc_service *service); /* rpc/client.c */ 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_queue_wait(struct ptlrpc_client *cl, struct ptlrpc_request *req); int ptlrpc_queue_req(struct ptlrpc_client *peer, struct ptlrpc_request *req); struct ptlrpc_request *ptlrpc_prep_req(struct ptlrpc_client *cl, int opcode, int namelen, char *name, int tgtlen, char *tgt); void ptlrpc_free_req(struct ptlrpc_request *request); struct ptlrpc_bulk_desc *ptlrpc_prep_bulk(struct lustre_peer *); /* rpc/service.c */ struct ptlrpc_service * ptlrpc_init_svc(__u32 bufsize, int req_portal, int rep_portal, char *uuid, req_unpack_t unpack, rep_pack_t pack, svc_handler_t); void ptlrpc_stop_thread(struct ptlrpc_service *svc); int ptlrpc_start_thread(struct obd_device *dev, struct ptlrpc_service *svc, char *name); int rpc_register_service(struct ptlrpc_service *service, char *uuid); int rpc_unregister_service(struct ptlrpc_service *service); struct ptlrpc_svc_data { char *name; struct ptlrpc_service *svc; struct obd_device *dev; }; #endif