diff options
Diffstat (limited to 'ANDROID_3.4.5/include/linux/sunrpc/xprt.h')
| -rw-r--r-- | ANDROID_3.4.5/include/linux/sunrpc/xprt.h | 404 |
1 files changed, 0 insertions, 404 deletions
diff --git a/ANDROID_3.4.5/include/linux/sunrpc/xprt.h b/ANDROID_3.4.5/include/linux/sunrpc/xprt.h deleted file mode 100644 index 77d278de..00000000 --- a/ANDROID_3.4.5/include/linux/sunrpc/xprt.h +++ /dev/null @@ -1,404 +0,0 @@ -/* - * linux/include/linux/sunrpc/xprt.h - * - * Declarations for the RPC transport interface. - * - * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de> - */ - -#ifndef _LINUX_SUNRPC_XPRT_H -#define _LINUX_SUNRPC_XPRT_H - -#include <linux/uio.h> -#include <linux/socket.h> -#include <linux/in.h> -#include <linux/ktime.h> -#include <linux/sunrpc/sched.h> -#include <linux/sunrpc/xdr.h> -#include <linux/sunrpc/msg_prot.h> - -#ifdef __KERNEL__ - -#define RPC_MIN_SLOT_TABLE (2U) -#define RPC_DEF_SLOT_TABLE (16U) -#define RPC_MAX_SLOT_TABLE_LIMIT (65536U) -#define RPC_MAX_SLOT_TABLE RPC_MAX_SLOT_TABLE_LIMIT - -/* - * This describes a timeout strategy - */ -struct rpc_timeout { - unsigned long to_initval, /* initial timeout */ - to_maxval, /* max timeout */ - to_increment; /* if !exponential */ - unsigned int to_retries; /* max # of retries */ - unsigned char to_exponential; -}; - -enum rpc_display_format_t { - RPC_DISPLAY_ADDR = 0, - RPC_DISPLAY_PORT, - RPC_DISPLAY_PROTO, - RPC_DISPLAY_HEX_ADDR, - RPC_DISPLAY_HEX_PORT, - RPC_DISPLAY_NETID, - RPC_DISPLAY_MAX, -}; - -struct rpc_task; -struct rpc_xprt; -struct seq_file; - -/* - * This describes a complete RPC request - */ -struct rpc_rqst { - /* - * This is the user-visible part - */ - struct rpc_xprt * rq_xprt; /* RPC client */ - struct xdr_buf rq_snd_buf; /* send buffer */ - struct xdr_buf rq_rcv_buf; /* recv buffer */ - - /* - * This is the private part - */ - struct rpc_task * rq_task; /* RPC task data */ - struct rpc_cred * rq_cred; /* Bound cred */ - __be32 rq_xid; /* request XID */ - int rq_cong; /* has incremented xprt->cong */ - u32 rq_seqno; /* gss seq no. used on req. */ - int rq_enc_pages_num; - struct page **rq_enc_pages; /* scratch pages for use by - gss privacy code */ - void (*rq_release_snd_buf)(struct rpc_rqst *); /* release rq_enc_pages */ - struct list_head rq_list; - - __u32 * rq_buffer; /* XDR encode buffer */ - size_t rq_callsize, - rq_rcvsize; - size_t rq_xmit_bytes_sent; /* total bytes sent */ - size_t rq_reply_bytes_recvd; /* total reply bytes */ - /* received */ - - struct xdr_buf rq_private_buf; /* The receive buffer - * used in the softirq. - */ - unsigned long rq_majortimeo; /* major timeout alarm */ - unsigned long rq_timeout; /* Current timeout value */ - ktime_t rq_rtt; /* round-trip time */ - unsigned int rq_retries; /* # of retries */ - unsigned int rq_connect_cookie; - /* A cookie used to track the - state of the transport - connection */ - - /* - * Partial send handling - */ - u32 rq_bytes_sent; /* Bytes we have sent */ - - ktime_t rq_xtime; /* transmit time stamp */ - int rq_ntrans; - -#if defined(CONFIG_SUNRPC_BACKCHANNEL) - struct list_head rq_bc_list; /* Callback service list */ - unsigned long rq_bc_pa_state; /* Backchannel prealloc state */ - struct list_head rq_bc_pa_list; /* Backchannel prealloc list */ -#endif /* CONFIG_SUNRPC_BACKCHANEL */ -}; -#define rq_svec rq_snd_buf.head -#define rq_slen rq_snd_buf.len - -struct rpc_xprt_ops { - void (*set_buffer_size)(struct rpc_xprt *xprt, size_t sndsize, size_t rcvsize); - int (*reserve_xprt)(struct rpc_xprt *xprt, struct rpc_task *task); - void (*release_xprt)(struct rpc_xprt *xprt, struct rpc_task *task); - void (*rpcbind)(struct rpc_task *task); - void (*set_port)(struct rpc_xprt *xprt, unsigned short port); - void (*connect)(struct rpc_task *task); - void * (*buf_alloc)(struct rpc_task *task, size_t size); - void (*buf_free)(void *buffer); - int (*send_request)(struct rpc_task *task); - void (*set_retrans_timeout)(struct rpc_task *task); - void (*timer)(struct rpc_task *task); - void (*release_request)(struct rpc_task *task); - void (*close)(struct rpc_xprt *xprt); - void (*destroy)(struct rpc_xprt *xprt); - void (*print_stats)(struct rpc_xprt *xprt, struct seq_file *seq); -}; - -/* - * RPC transport identifiers - * - * To preserve compatibility with the historical use of raw IP protocol - * id's for transport selection, UDP and TCP identifiers are specified - * with the previous values. No such restriction exists for new transports, - * except that they may not collide with these values (17 and 6, - * respectively). - */ -#define XPRT_TRANSPORT_BC (1 << 31) -enum xprt_transports { - XPRT_TRANSPORT_UDP = IPPROTO_UDP, - XPRT_TRANSPORT_TCP = IPPROTO_TCP, - XPRT_TRANSPORT_BC_TCP = IPPROTO_TCP | XPRT_TRANSPORT_BC, - XPRT_TRANSPORT_RDMA = 256, - XPRT_TRANSPORT_LOCAL = 257, -}; - -struct rpc_xprt { - atomic_t count; /* Reference count */ - struct rpc_xprt_ops * ops; /* transport methods */ - - const struct rpc_timeout *timeout; /* timeout parms */ - struct sockaddr_storage addr; /* server address */ - size_t addrlen; /* size of server address */ - int prot; /* IP protocol */ - - unsigned long cong; /* current congestion */ - unsigned long cwnd; /* congestion window */ - - size_t max_payload; /* largest RPC payload size, - in bytes */ - unsigned int tsh_size; /* size of transport specific - header */ - - struct rpc_wait_queue binding; /* requests waiting on rpcbind */ - struct rpc_wait_queue sending; /* requests waiting to send */ - struct rpc_wait_queue pending; /* requests in flight */ - struct rpc_wait_queue backlog; /* waiting for slot */ - struct list_head free; /* free slots */ - unsigned int max_reqs; /* max number of slots */ - unsigned int min_reqs; /* min number of slots */ - atomic_t num_reqs; /* total slots */ - unsigned long state; /* transport state */ - unsigned char shutdown : 1, /* being shut down */ - resvport : 1; /* use a reserved port */ - unsigned int bind_index; /* bind function index */ - - /* - * Connection of transports - */ - unsigned long bind_timeout, - reestablish_timeout; - unsigned int connect_cookie; /* A cookie that gets bumped - every time the transport - is reconnected */ - - /* - * Disconnection of idle transports - */ - struct work_struct task_cleanup; - struct timer_list timer; - unsigned long last_used, - idle_timeout; - - /* - * Send stuff - */ - spinlock_t transport_lock; /* lock transport info */ - spinlock_t reserve_lock; /* lock slot table */ - u32 xid; /* Next XID value to use */ - struct rpc_task * snd_task; /* Task blocked in send */ - struct svc_xprt *bc_xprt; /* NFSv4.1 backchannel */ -#if defined(CONFIG_SUNRPC_BACKCHANNEL) - struct svc_serv *bc_serv; /* The RPC service which will */ - /* process the callback */ - unsigned int bc_alloc_count; /* Total number of preallocs */ - spinlock_t bc_pa_lock; /* Protects the preallocated - * items */ - struct list_head bc_pa_list; /* List of preallocated - * backchannel rpc_rqst's */ -#endif /* CONFIG_SUNRPC_BACKCHANNEL */ - struct list_head recv; - - struct { - unsigned long bind_count, /* total number of binds */ - connect_count, /* total number of connects */ - connect_start, /* connect start timestamp */ - connect_time, /* jiffies waiting for connect */ - sends, /* how many complete requests */ - recvs, /* how many complete requests */ - bad_xids, /* lookup_rqst didn't find XID */ - max_slots; /* max rpc_slots used */ - - unsigned long long req_u, /* average requests on the wire */ - bklog_u, /* backlog queue utilization */ - sending_u, /* send q utilization */ - pending_u; /* pend q utilization */ - } stat; - - struct net *xprt_net; - const char *servername; - const char *address_strings[RPC_DISPLAY_MAX]; -}; - -#if defined(CONFIG_SUNRPC_BACKCHANNEL) -/* - * Backchannel flags - */ -#define RPC_BC_PA_IN_USE 0x0001 /* Preallocated backchannel */ - /* buffer in use */ -#endif /* CONFIG_SUNRPC_BACKCHANNEL */ - -#if defined(CONFIG_SUNRPC_BACKCHANNEL) -static inline int bc_prealloc(struct rpc_rqst *req) -{ - return test_bit(RPC_BC_PA_IN_USE, &req->rq_bc_pa_state); -} -#else -static inline int bc_prealloc(struct rpc_rqst *req) -{ - return 0; -} -#endif /* CONFIG_SUNRPC_BACKCHANNEL */ - -struct xprt_create { - int ident; /* XPRT_TRANSPORT identifier */ - struct net * net; - struct sockaddr * srcaddr; /* optional local address */ - struct sockaddr * dstaddr; /* remote peer address */ - size_t addrlen; - const char *servername; - struct svc_xprt *bc_xprt; /* NFSv4.1 backchannel */ -}; - -struct xprt_class { - struct list_head list; - int ident; /* XPRT_TRANSPORT identifier */ - struct rpc_xprt * (*setup)(struct xprt_create *); - struct module *owner; - char name[32]; -}; - -/* - * Generic internal transport functions - */ -struct rpc_xprt *xprt_create_transport(struct xprt_create *args); -void xprt_connect(struct rpc_task *task); -void xprt_reserve(struct rpc_task *task); -int xprt_reserve_xprt(struct rpc_xprt *xprt, struct rpc_task *task); -int xprt_reserve_xprt_cong(struct rpc_xprt *xprt, struct rpc_task *task); -int xprt_prepare_transmit(struct rpc_task *task); -void xprt_transmit(struct rpc_task *task); -void xprt_end_transmit(struct rpc_task *task); -int xprt_adjust_timeout(struct rpc_rqst *req); -void xprt_release_xprt(struct rpc_xprt *xprt, struct rpc_task *task); -void xprt_release_xprt_cong(struct rpc_xprt *xprt, struct rpc_task *task); -void xprt_release(struct rpc_task *task); -struct rpc_xprt * xprt_get(struct rpc_xprt *xprt); -void xprt_put(struct rpc_xprt *xprt); -struct rpc_xprt * xprt_alloc(struct net *net, size_t size, - unsigned int num_prealloc, - unsigned int max_req); -void xprt_free(struct rpc_xprt *); - -static inline __be32 *xprt_skip_transport_header(struct rpc_xprt *xprt, __be32 *p) -{ - return p + xprt->tsh_size; -} - -/* - * Transport switch helper functions - */ -int xprt_register_transport(struct xprt_class *type); -int xprt_unregister_transport(struct xprt_class *type); -int xprt_load_transport(const char *); -void xprt_set_retrans_timeout_def(struct rpc_task *task); -void xprt_set_retrans_timeout_rtt(struct rpc_task *task); -void xprt_wake_pending_tasks(struct rpc_xprt *xprt, int status); -void xprt_wait_for_buffer_space(struct rpc_task *task, rpc_action action); -void xprt_write_space(struct rpc_xprt *xprt); -void xprt_adjust_cwnd(struct rpc_task *task, int result); -struct rpc_rqst * xprt_lookup_rqst(struct rpc_xprt *xprt, __be32 xid); -void xprt_complete_rqst(struct rpc_task *task, int copied); -void xprt_release_rqst_cong(struct rpc_task *task); -void xprt_disconnect_done(struct rpc_xprt *xprt); -void xprt_force_disconnect(struct rpc_xprt *xprt); -void xprt_conditional_disconnect(struct rpc_xprt *xprt, unsigned int cookie); - -/* - * Reserved bit positions in xprt->state - */ -#define XPRT_LOCKED (0) -#define XPRT_CONNECTED (1) -#define XPRT_CONNECTING (2) -#define XPRT_CLOSE_WAIT (3) -#define XPRT_BOUND (4) -#define XPRT_BINDING (5) -#define XPRT_CLOSING (6) -#define XPRT_CONNECTION_ABORT (7) -#define XPRT_CONNECTION_CLOSE (8) - -static inline void xprt_set_connected(struct rpc_xprt *xprt) -{ - set_bit(XPRT_CONNECTED, &xprt->state); -} - -static inline void xprt_clear_connected(struct rpc_xprt *xprt) -{ - clear_bit(XPRT_CONNECTED, &xprt->state); -} - -static inline int xprt_connected(struct rpc_xprt *xprt) -{ - return test_bit(XPRT_CONNECTED, &xprt->state); -} - -static inline int xprt_test_and_set_connected(struct rpc_xprt *xprt) -{ - return test_and_set_bit(XPRT_CONNECTED, &xprt->state); -} - -static inline int xprt_test_and_clear_connected(struct rpc_xprt *xprt) -{ - return test_and_clear_bit(XPRT_CONNECTED, &xprt->state); -} - -static inline void xprt_clear_connecting(struct rpc_xprt *xprt) -{ - smp_mb__before_clear_bit(); - clear_bit(XPRT_CONNECTING, &xprt->state); - smp_mb__after_clear_bit(); -} - -static inline int xprt_connecting(struct rpc_xprt *xprt) -{ - return test_bit(XPRT_CONNECTING, &xprt->state); -} - -static inline int xprt_test_and_set_connecting(struct rpc_xprt *xprt) -{ - return test_and_set_bit(XPRT_CONNECTING, &xprt->state); -} - -static inline void xprt_set_bound(struct rpc_xprt *xprt) -{ - test_and_set_bit(XPRT_BOUND, &xprt->state); -} - -static inline int xprt_bound(struct rpc_xprt *xprt) -{ - return test_bit(XPRT_BOUND, &xprt->state); -} - -static inline void xprt_clear_bound(struct rpc_xprt *xprt) -{ - clear_bit(XPRT_BOUND, &xprt->state); -} - -static inline void xprt_clear_binding(struct rpc_xprt *xprt) -{ - smp_mb__before_clear_bit(); - clear_bit(XPRT_BINDING, &xprt->state); - smp_mb__after_clear_bit(); -} - -static inline int xprt_test_and_set_binding(struct rpc_xprt *xprt) -{ - return test_and_set_bit(XPRT_BINDING, &xprt->state); -} - -#endif /* __KERNEL__*/ - -#endif /* _LINUX_SUNRPC_XPRT_H */ |