/* -*- 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 CONNMGR_REQUEST_PORTAL 1 #define CONNMGR_REPLY_PORTAL 2 //#define OSC_REQUEST_PORTAL 3 #define OSC_REPLY_PORTAL 4 #define OSC_BULK_PORTAL 5 #define OST_REQUEST_PORTAL 6 //#define OST_REPLY_PORTAL 7 #define OST_BULK_PORTAL 8 #define MDC_REQUEST_PORTAL 9 #define MDC_REPLY_PORTAL 10 #define MDC_BULK_PORTAL 11 #define MDS_REQUEST_PORTAL 12 #define MDS_REPLY_PORTAL 13 #define MDS_BULK_PORTAL 14 #define LDLM_REQUEST_PORTAL 15 #define LDLM_REPLY_PORTAL 16 #define LDLM_CLI_REQUEST_PORTAL 17 #define LDLM_CLI_REPLY_PORTAL 18 /* default rpc ring length */ #define RPC_RING_LENGTH 10 #define SVC_KILLED 1 #define SVC_EVENT 2 #define SVC_SIGNAL 4 #define SVC_RUNNING 8 #define SVC_STOPPING 16 #define SVC_STOPPED 32 #define RECOVD_STOPPING 1 /* how cleanup tells recovd to quit */ #define RECOVD_IDLE 2 /* normal state */ #define RECOVD_STOPPED 4 /* after recovd has stopped */ #define RECOVD_FAIL 8 /* RPC timeout: wakeup recovd, sets flag */ #define RECOVD_TIMEOUT 16 /* set when recovd detects a timeout */ #define RECOVD_UPCALL_WAIT 32 /* an upcall has been placed */ #define RECOVD_UPCALL_ANSWER 64 /* an upcall has been answered */ #define LUSTRE_CONN_NEW 1 #define LUSTRE_CONN_CON 2 #define LUSTRE_CONN_RECOVD 3 #define LUSTRE_CONN_FULL 4 struct ptlrpc_connection { struct list_head c_link; struct lustre_peer c_peer; __u8 c_local_uuid[37]; /* XXX do we need this? */ __u8 c_remote_uuid[37]; int c_level; __u32 c_generation; /* changes upon new connection */ __u32 c_epoch; /* changes when peer changes */ __u32 c_bootcount; /* peer's boot count */ spinlock_t c_lock; __u32 c_xid_in; __u32 c_xid_out; atomic_t c_refcount; __u64 c_token; __u64 c_remote_conn; __u64 c_remote_token; }; struct ptlrpc_client { struct obd_device *cli_obd; __u32 cli_request_portal; __u32 cli_reply_portal; __u64 cli_last_rcvd; __u64 cli_last_committed; __u32 cli_target_devno; void *cli_data; struct semaphore cli_rpc_sem; /* limits outstanding requests */ spinlock_t cli_lock; /* protects lists */ struct list_head cli_delayed_head; /* delayed until after recovery */ struct list_head cli_sending_head; struct list_head cli_dying_head; struct list_head cli_ha_item; int (*cli_recover)(struct ptlrpc_client *); struct recovd_obd *cli_recovd; char *cli_name; }; /* packet types */ #define PTL_RPC_TYPE_REQUEST 2 #define PTL_RPC_TYPE_REPLY 3 /* state flags of requests */ #define PTL_RPC_FL_INTR (1 << 0) #define PTL_RPC_FL_REPLIED (1 << 1) /* reply was received */ #define PTL_RPC_FL_SENT (1 << 2) #define PTL_BULK_FL_SENT (1 << 3) #define PTL_BULK_FL_RCVD (1 << 4) #define PTL_RPC_FL_ERR (1 << 5) #define PTL_RPC_FL_TIMEOUT (1 << 6) #define PTL_RPC_FL_RESEND (1 << 7) #define PTL_RPC_FL_RECOVERY (1 << 8) /* retransmission for recovery */ #define PTL_RPC_FL_FINISHED (1 << 9) #define PTL_RPC_FL_RETAIN (1 << 10) /* retain for replay after reply */ #define PTL_RPC_FL_REPLAY (1 << 11) /* replay upon recovery */ #define PTL_RPC_FL_ALLOCREP (1 << 12) /* reply buffer allocated */ struct ptlrpc_request { int rq_type; /* one of PTL_RPC_REQUEST, PTL_RPC_REPLY, PTL_RPC_BULK */ struct list_head rq_list; struct list_head rq_multi; struct obd_device *rq_obd; int rq_status; int rq_flags; __u32 rq_connid; atomic_t rq_refcount; int rq_reqlen; struct lustre_msg *rq_reqmsg; int rq_replen; struct lustre_msg *rq_repmsg; __u64 rq_transno; __u64 rq_xid; char *rq_bulkbuf; int rq_bulklen; int rq_level; time_t rq_time; time_t rq_timeout; // 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; struct ptlrpc_connection *rq_connection; struct ptlrpc_client *rq_client; }; struct ptlrpc_bulk_page { struct ptlrpc_bulk_desc *b_desc; struct list_head b_link; char *b_buf; int b_buflen; struct page *b_page; __u32 b_xid; __u32 b_flags; struct dentry *b_dentry; int (*b_cb)(struct ptlrpc_bulk_page *); ptl_md_t b_md; ptl_handle_md_t b_md_h; ptl_handle_me_t b_me_h; }; struct ptlrpc_bulk_desc { int b_flags; struct ptlrpc_connection *b_connection; struct ptlrpc_client *b_client; __u32 b_portal; struct obd_conn b_conn; void (*b_cb)(struct ptlrpc_bulk_desc *, void *); void *b_cb_data; wait_queue_head_t b_waitq; struct list_head b_page_list; __u32 b_page_count; atomic_t b_pages_remaining; void *b_desc_private; }; struct ptlrpc_thread { struct list_head t_link; __u32 t_flags; wait_queue_head_t t_ctl_waitq; }; struct ptlrpc_service { time_t srv_time; time_t srv_timeout; /* 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; struct lustre_peer srv_self; wait_queue_head_t srv_waitq; /* all threads sleep on this */ spinlock_t srv_lock; struct list_head srv_reqs; struct list_head srv_threads; int (*srv_handler)(struct obd_device *obddev, struct ptlrpc_service *svc, struct ptlrpc_request *req); }; typedef void (*bulk_callback_t)(struct ptlrpc_bulk_desc *, void *); typedef int (*svc_handler_t)(struct obd_device *obddev, struct ptlrpc_service *svc, struct ptlrpc_request *req); /* rpc/connection.c */ void ptlrpc_readdress_connection(struct ptlrpc_connection *conn, char *uuid); struct ptlrpc_connection *ptlrpc_get_connection(struct lustre_peer *peer); int ptlrpc_put_connection(struct ptlrpc_connection *c); struct ptlrpc_connection *ptlrpc_connection_addref(struct ptlrpc_connection *); void ptlrpc_init_connection(void); void ptlrpc_cleanup_connection(void); /* rpc/niobuf.c */ int ptlrpc_check_bulk_sent(struct ptlrpc_bulk_desc *bulk); int ptlrpc_send_bulk(struct ptlrpc_bulk_desc *); int ptlrpc_register_bulk(struct ptlrpc_bulk_desc *); int ptlrpc_abort_bulk(struct ptlrpc_bulk_desc *bulk); int ptlrpc_reply(struct ptlrpc_service *svc, struct ptlrpc_request *req); int ptlrpc_error(struct ptlrpc_service *svc, struct ptlrpc_request *req); void ptlrpc_resend_req(struct ptlrpc_request *request); int ptl_send_rpc(struct ptlrpc_request *request); void ptlrpc_link_svc_me(struct ptlrpc_service *service, int i); /* rpc/client.c */ void ptlrpc_init_client(struct recovd_obd *, int (*recover)(struct ptlrpc_client *), int req_portal, int rep_portal, struct ptlrpc_client *); void ptlrpc_cleanup_client(struct ptlrpc_client *cli); __u8 *ptlrpc_req_to_uuid(struct ptlrpc_request *req); struct ptlrpc_connection *ptlrpc_uuid_to_connection(char *uuid); int ptlrpc_queue_wait(struct ptlrpc_request *req); void ptlrpc_continue_req(struct ptlrpc_request *req); int ptlrpc_replay_req(struct ptlrpc_request *req); void ptlrpc_restart_req(struct ptlrpc_request *req); struct ptlrpc_request *ptlrpc_prep_req(struct ptlrpc_client *cl, struct ptlrpc_connection *u, int opcode, int count, int *lengths, char **bufs); void ptlrpc_free_req(struct ptlrpc_request *request); void ptlrpc_req_finished(struct ptlrpc_request *request); struct ptlrpc_bulk_desc *ptlrpc_prep_bulk(struct ptlrpc_connection *); void ptlrpc_free_bulk(struct ptlrpc_bulk_desc *bulk); struct ptlrpc_bulk_page *ptlrpc_prep_bulk_page(struct ptlrpc_bulk_desc *desc); void ptlrpc_free_bulk_page(struct ptlrpc_bulk_page *page); 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_all_threads(struct ptlrpc_service *svc); int ptlrpc_start_thread(struct obd_device *dev, struct ptlrpc_service *svc, char *name); int ptlrpc_unregister_service(struct ptlrpc_service *service); struct ptlrpc_svc_data { char *name; struct ptlrpc_service *svc; struct ptlrpc_thread *thread; struct obd_device *dev; }; /* rpc/pack_generic.c */ int lustre_pack_msg(int count, int *lens, char **bufs, int *len, struct lustre_msg **msg); int lustre_msg_size(int count, int *lengths); int lustre_unpack_msg(struct lustre_msg *m, int len); void *lustre_msg_buf(struct lustre_msg *m, int n); #endif