/* -*- 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 #define LDLM_REQUEST_PORTAL 13 #define LDLM_REPLY_PORTAL 14 /* default rpc ring length */ #define RPC_RING_LENGTH 2 #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 struct ptlrpc_client { struct lustre_peer cli_server; struct obd_device *cli_obd; __u32 cli_request_portal; __u32 cli_reply_portal; spinlock_t cli_lock; __u32 cli_xid; struct semaphore cli_rpc_sem; }; /* 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 7 #define PTL_RPC_ERR 8 struct ptlrpc_request { int rq_type; /* one of PTL_RPC_REQUEST, PTL_RPC_REPLY, PTL_RPC_BULK */ spinlock_t rq_lock; struct list_head rq_list; struct obd_device *rq_obd; int rq_status; int rq_flags; __u32 rq_connid; __u32 rq_xid; int rq_reqlen; char *rq_reqbuf; struct lustre_msg *rq_reqmsg; int rq_replen; char *rq_repbuf; struct lustre_msg *rq_repmsg; 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_bulk_desc *, void *); struct page *b_page; struct obd_conn b_conn; __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_ref_count[RPC_RING_LENGTH]; ptl_handle_me_t srv_me_h[RPC_RING_LENGTH]; __u32 srv_buf_size; __u32 srv_ring_length; __u32 srv_req_portal; __u32 srv_rep_portal; __u32 srv_xid; /* event queue */ ptl_handle_eq_t srv_eq_h; __u32 srv_flags; struct lustre_peer srv_self; ptl_process_id_t srv_id; struct task_struct *srv_thread; wait_queue_head_t srv_waitq; wait_queue_head_t srv_ctl_waitq; spinlock_t srv_lock; struct list_head srv_reqs; ptl_event_t srv_ev; 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_register_bulk(struct ptlrpc_bulk_desc *); int ptlrpc_abort_bulk(struct ptlrpc_bulk_desc *bulk); 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 ptlrpc_client *cl); void ptlrpc_link_svc_me(struct ptlrpc_service *service, int i); /* rpc/client.c */ int ptlrpc_connect_client(int dev, char *uuid, int req_portal, int rep_portal, 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 count, int *lengths, char **bufs); void ptlrpc_free_req(struct ptlrpc_request *request); struct ptlrpc_bulk_desc *ptlrpc_prep_bulk(struct lustre_peer *); int ptlrpc_check_status(struct ptlrpc_request *req, int err); /* rpc/service.c */ struct ptlrpc_service * ptlrpc_init_svc(__u32 bufsize, int req_portal, int rep_portal, char *uuid, 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_unregister_service(struct ptlrpc_service *service); struct ptlrpc_svc_data { char *name; struct ptlrpc_service *svc; struct obd_device *dev; }; /* rpc/pack_generic.c */ int lustre_pack_msg(int count, int *lens, char **bufs, int *len, char **buf); int lustre_msg_size(int count, int *lengths); int lustre_unpack_msg(char *buf, int len); void *lustre_msg_buf(struct lustre_msg *m, int n); #endif