1c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 2c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * linux/include/linux/sunrpc/xprt.h 3c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * 4c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Declarations for the RPC transport interface. 5c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * 6c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de> 7c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 8c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 9c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#ifndef _LINUX_SUNRPC_XPRT_H 10c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define _LINUX_SUNRPC_XPRT_H 11c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 12c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#include <linux/uio.h> 13c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#include <linux/socket.h> 14c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#include <linux/in.h> 15c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#include <linux/sunrpc/sched.h> 16c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#include <linux/sunrpc/xdr.h> 17c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 18c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern unsigned int xprt_udp_slot_table_entries; 19c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern unsigned int xprt_tcp_slot_table_entries; 20c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 21c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define RPC_MIN_SLOT_TABLE (2U) 22c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define RPC_DEF_SLOT_TABLE (16U) 23c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define RPC_MAX_SLOT_TABLE (128U) 24c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 25c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 26c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * RPC call and reply header size as number of 32bit words (verifier 27c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * size computed separately) 28c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 29c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define RPC_CALLHDRSIZE 6 30c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define RPC_REPHDRSIZE 4 31c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 32c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 33c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Parameters for choosing a free port 34c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 35c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern unsigned int xprt_min_resvport; 36c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern unsigned int xprt_max_resvport; 37c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 38c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define RPC_MIN_RESVPORT (1U) 39c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define RPC_MAX_RESVPORT (65535U) 40c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define RPC_DEF_MIN_RESVPORT (665U) 41c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define RPC_DEF_MAX_RESVPORT (1023U) 42c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 43c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 44c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * This describes a timeout strategy 45c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 46c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct rpc_timeout { 47c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned long to_initval, /* initial timeout */ 48c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru to_maxval, /* max timeout */ 49c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru to_increment; /* if !exponential */ 50c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned int to_retries; /* max # of retries */ 51c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned char to_exponential; 52c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru}; 53c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 54c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct rpc_task; 55c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct rpc_xprt; 56c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct seq_file; 57c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 58c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 59c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * This describes a complete RPC request 60c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 61c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct rpc_rqst { 62c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru /* 63c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * This is the user-visible part 64c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 65c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct rpc_xprt * rq_xprt; /* RPC client */ 66c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct xdr_buf rq_snd_buf; /* send buffer */ 67c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct xdr_buf rq_rcv_buf; /* recv buffer */ 68c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 69c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru /* 70c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * This is the private part 71c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 72c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct rpc_task * rq_task; /* RPC task data */ 73c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru __u32 rq_xid; /* request XID */ 74c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int rq_cong; /* has incremented xprt->cong */ 75c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int rq_received; /* receive completed */ 76c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru u32 rq_seqno; /* gss seq no. used on req. */ 77c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int rq_enc_pages_num; 78c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct page **rq_enc_pages; /* scratch pages for use by 79c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru gss privacy code */ 80c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru void (*rq_release_snd_buf)(struct rpc_rqst *); /* release rq_enc_pages */ 81c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct list_head rq_list; 82c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 83c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru __u32 * rq_buffer; /* XDR encode buffer */ 84c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru size_t rq_bufsize; 85c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 86c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct xdr_buf rq_private_buf; /* The receive buffer 87c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * used in the softirq. 88c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 89c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned long rq_majortimeo; /* major timeout alarm */ 90c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned long rq_timeout; /* Current timeout value */ 91c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned int rq_retries; /* # of retries */ 92c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 93c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru /* 94c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Partial send handling 95c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 96c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru u32 rq_bytes_sent; /* Bytes we have sent */ 97c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 98c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned long rq_xtime; /* when transmitted */ 99c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int rq_ntrans; 100c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru}; 101c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define rq_svec rq_snd_buf.head 102c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define rq_slen rq_snd_buf.len 103c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 104c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct rpc_xprt_ops { 105c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru void (*set_buffer_size)(struct rpc_xprt *xprt, size_t sndsize, size_t rcvsize); 106c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int (*reserve_xprt)(struct rpc_task *task); 107c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru void (*release_xprt)(struct rpc_xprt *xprt, struct rpc_task *task); 108c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru void (*set_port)(struct rpc_xprt *xprt, unsigned short port); 109c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru void (*connect)(struct rpc_task *task); 110c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru void * (*buf_alloc)(struct rpc_task *task, size_t size); 111c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru void (*buf_free)(struct rpc_task *task); 112c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int (*send_request)(struct rpc_task *task); 113c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru void (*set_retrans_timeout)(struct rpc_task *task); 114c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru void (*timer)(struct rpc_task *task); 115c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru void (*release_request)(struct rpc_task *task); 116c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru void (*close)(struct rpc_xprt *xprt); 117c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru void (*destroy)(struct rpc_xprt *xprt); 118c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru void (*print_stats)(struct rpc_xprt *xprt, struct seq_file *seq); 119c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru}; 120c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 121c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct rpc_xprt { 122c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct rpc_xprt_ops * ops; /* transport methods */ 123c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct socket * sock; /* BSD socket layer */ 124c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct sock * inet; /* INET layer */ 125c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 126c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct rpc_timeout timeout; /* timeout parms */ 127c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct sockaddr_in addr; /* server address */ 128c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int prot; /* IP protocol */ 129c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 130c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned long cong; /* current congestion */ 131c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned long cwnd; /* congestion window */ 132c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 133c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru size_t rcvsize, /* transport rcv buffer size */ 134c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru sndsize; /* transport send buffer size */ 135c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 136c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru size_t max_payload; /* largest RPC payload size, 137c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru in bytes */ 138c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned int tsh_size; /* size of transport specific 139c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru header */ 140c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 141c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct rpc_wait_queue sending; /* requests waiting to send */ 142c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct rpc_wait_queue resend; /* requests waiting to resend */ 143c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct rpc_wait_queue pending; /* requests in flight */ 144c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct rpc_wait_queue backlog; /* waiting for slot */ 145c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct list_head free; /* free slots */ 146c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct rpc_rqst * slot; /* slot table storage */ 147c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned int max_reqs; /* total slots */ 148c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned long state; /* transport state */ 149c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned char shutdown : 1, /* being shut down */ 150c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru resvport : 1; /* use a reserved port */ 151c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 152c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru /* 153c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * XID 154c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 155c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru __u32 xid; /* Next XID value to use */ 156c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 157c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru /* 158c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * State of TCP reply receive stuff 159c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 160c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru u32 tcp_recm, /* Fragment header */ 161c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru tcp_xid, /* Current XID */ 162c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru tcp_reclen, /* fragment length */ 163c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru tcp_offset; /* fragment offset */ 164c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned long tcp_copied, /* copied to request */ 165c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru tcp_flags; 166c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru /* 167c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Connection of transports 168c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 169c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned long connect_timeout, 170c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru bind_timeout, 171c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru reestablish_timeout; 172c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct work_struct connect_worker; 173c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned short port; 174c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 175c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru /* 176c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Disconnection of idle transports 177c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 178c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct work_struct task_cleanup; 179c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct timer_list timer; 180c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned long last_used, 181c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru idle_timeout; 182c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 183c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru /* 184c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Send stuff 185c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 186c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru spinlock_t transport_lock; /* lock transport info */ 187c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru spinlock_t reserve_lock; /* lock slot table */ 188c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct rpc_task * snd_task; /* Task blocked in send */ 189c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 190c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct list_head recv; 191c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 192c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct { 193c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned long bind_count, /* total number of binds */ 194c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru connect_count, /* total number of connects */ 195c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru connect_start, /* connect start timestamp */ 196c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru connect_time, /* jiffies waiting for connect */ 197c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru sends, /* how many complete requests */ 198c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru recvs, /* how many complete requests */ 199c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru bad_xids; /* lookup_rqst didn't find XID */ 200c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 201c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned long long req_u, /* average requests on the wire */ 202c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru bklog_u; /* backlog queue utilization */ 203c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru } stat; 204c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 205c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru void (*old_data_ready)(struct sock *, int); 206c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru void (*old_state_change)(struct sock *); 207c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru void (*old_write_space)(struct sock *); 208c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru}; 209c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 210c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define XPRT_LAST_FRAG (1 << 0) 211c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define XPRT_COPY_RECM (1 << 1) 212c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define XPRT_COPY_XID (1 << 2) 213c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define XPRT_COPY_DATA (1 << 3) 214c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 215c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#ifdef __KERNEL__ 216c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 217c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 218c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Transport operations used by ULPs 219c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 220c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct rpc_xprt * xprt_create_proto(int proto, struct sockaddr_in *addr, struct rpc_timeout *to); 221c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruvoid xprt_set_timeout(struct rpc_timeout *to, unsigned int retr, unsigned long incr); 222c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 223c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 224c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Generic internal transport functions 225c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 226c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruvoid xprt_connect(struct rpc_task *task); 227c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruvoid xprt_reserve(struct rpc_task *task); 228c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruint xprt_reserve_xprt(struct rpc_task *task); 229c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruint xprt_reserve_xprt_cong(struct rpc_task *task); 230c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruint xprt_prepare_transmit(struct rpc_task *task); 231c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruvoid xprt_transmit(struct rpc_task *task); 232c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruvoid xprt_end_transmit(struct rpc_task *task); 233c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruint xprt_adjust_timeout(struct rpc_rqst *req); 234c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruvoid xprt_release_xprt(struct rpc_xprt *xprt, struct rpc_task *task); 235c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruvoid xprt_release_xprt_cong(struct rpc_xprt *xprt, struct rpc_task *task); 236c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruvoid xprt_release(struct rpc_task *task); 237c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruint xprt_destroy(struct rpc_xprt *xprt); 238c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 239c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline u32 *xprt_skip_transport_header(struct rpc_xprt *xprt, u32 *p) 240c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru{ 241c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru return p + xprt->tsh_size; 242c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} 243c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 244c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 245c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Transport switch helper functions 246c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 247c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruvoid xprt_set_retrans_timeout_def(struct rpc_task *task); 248c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruvoid xprt_set_retrans_timeout_rtt(struct rpc_task *task); 249c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruvoid xprt_wake_pending_tasks(struct rpc_xprt *xprt, int status); 250c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruvoid xprt_wait_for_buffer_space(struct rpc_task *task); 251c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruvoid xprt_write_space(struct rpc_xprt *xprt); 252c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruvoid xprt_update_rtt(struct rpc_task *task); 253c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruvoid xprt_adjust_cwnd(struct rpc_task *task, int result); 254c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct rpc_rqst * xprt_lookup_rqst(struct rpc_xprt *xprt, u32 xid); 255c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruvoid xprt_complete_rqst(struct rpc_task *task, int copied); 256c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruvoid xprt_release_rqst_cong(struct rpc_task *task); 257c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruvoid xprt_disconnect(struct rpc_xprt *xprt); 258c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 259c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 260c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Socket transport setup operations 261c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 262c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruint xs_setup_udp(struct rpc_xprt *xprt, struct rpc_timeout *to); 263c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruint xs_setup_tcp(struct rpc_xprt *xprt, struct rpc_timeout *to); 264c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 265c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 266c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Reserved bit positions in xprt->state 267c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 268c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define XPRT_LOCKED (0) 269c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define XPRT_CONNECTED (1) 270c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define XPRT_CONNECTING (2) 271c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define XPRT_CLOSE_WAIT (3) 272c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 273c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline void xprt_set_connected(struct rpc_xprt *xprt) 274c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru{ 275c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru set_bit(XPRT_CONNECTED, &xprt->state); 276c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} 277c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 278c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline void xprt_clear_connected(struct rpc_xprt *xprt) 279c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru{ 280c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru clear_bit(XPRT_CONNECTED, &xprt->state); 281c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} 282c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 283c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline int xprt_connected(struct rpc_xprt *xprt) 284c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru{ 285c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru return test_bit(XPRT_CONNECTED, &xprt->state); 286c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} 287c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 288c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline int xprt_test_and_set_connected(struct rpc_xprt *xprt) 289c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru{ 290c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru return test_and_set_bit(XPRT_CONNECTED, &xprt->state); 291c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} 292c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 293c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline int xprt_test_and_clear_connected(struct rpc_xprt *xprt) 294c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru{ 295c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru return test_and_clear_bit(XPRT_CONNECTED, &xprt->state); 296c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} 297c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 298c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline void xprt_clear_connecting(struct rpc_xprt *xprt) 299c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru{ 300c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru smp_mb__before_clear_bit(); 301c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru clear_bit(XPRT_CONNECTING, &xprt->state); 302c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru smp_mb__after_clear_bit(); 303c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} 304c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 305c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline int xprt_connecting(struct rpc_xprt *xprt) 306c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru{ 307c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru return test_bit(XPRT_CONNECTING, &xprt->state); 308c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} 309c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 310c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline int xprt_test_and_set_connecting(struct rpc_xprt *xprt) 311c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru{ 312c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru return test_and_set_bit(XPRT_CONNECTING, &xprt->state); 313c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} 314c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 315c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#endif /* __KERNEL__*/ 316c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 317c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#endif /* _LINUX_SUNRPC_XPRT_H */ 318