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      1 /****************************************************************************
      2  ****************************************************************************
      3  ***
      4  ***   This header was automatically generated from a Linux kernel header
      5  ***   of the same name, to make information necessary for userspace to
      6  ***   call into the kernel available to libc.  It contains only constants,
      7  ***   structures, and macros generated from the original header, and thus,
      8  ***   contains no copyrightable information.
      9  ***
     10  ****************************************************************************
     11  ****************************************************************************/
     12 #ifndef _LINUX_SUNRPC_XPRT_H
     13 #define _LINUX_SUNRPC_XPRT_H
     14 
     15 #include <linux/uio.h>
     16 #include <linux/socket.h>
     17 #include <linux/in.h>
     18 #include <linux/sunrpc/sched.h>
     19 #include <linux/sunrpc/xdr.h>
     20 
     21 #define RPC_MIN_SLOT_TABLE (2U)
     22 #define RPC_DEF_SLOT_TABLE (16U)
     23 #define RPC_MAX_SLOT_TABLE (128U)
     24 
     25 #define RPC_CALLHDRSIZE 6
     26 #define RPC_REPHDRSIZE 4
     27 
     28 #define RPC_MIN_RESVPORT (1U)
     29 #define RPC_MAX_RESVPORT (65535U)
     30 #define RPC_DEF_MIN_RESVPORT (665U)
     31 #define RPC_DEF_MAX_RESVPORT (1023U)
     32 
     33 struct rpc_timeout {
     34  unsigned long to_initval,
     35  to_maxval,
     36  to_increment;
     37  unsigned int to_retries;
     38  unsigned char to_exponential;
     39 };
     40 
     41 struct rpc_task;
     42 struct rpc_xprt;
     43 struct seq_file;
     44 
     45 struct rpc_rqst {
     46 
     47  struct rpc_xprt * rq_xprt;
     48  struct xdr_buf rq_snd_buf;
     49  struct xdr_buf rq_rcv_buf;
     50 
     51  struct rpc_task * rq_task;
     52  __u32 rq_xid;
     53  int rq_cong;
     54  int rq_received;
     55  u32 rq_seqno;
     56  int rq_enc_pages_num;
     57  struct page **rq_enc_pages;
     58  void (*rq_release_snd_buf)(struct rpc_rqst *);
     59  struct list_head rq_list;
     60 
     61  __u32 * rq_buffer;
     62  size_t rq_bufsize;
     63 
     64  struct xdr_buf rq_private_buf;
     65  unsigned long rq_majortimeo;
     66  unsigned long rq_timeout;
     67  unsigned int rq_retries;
     68 
     69  u32 rq_bytes_sent;
     70 
     71  unsigned long rq_xtime;
     72  int rq_ntrans;
     73 };
     74 #define rq_svec rq_snd_buf.head
     75 #define rq_slen rq_snd_buf.len
     76 
     77 struct rpc_xprt_ops {
     78  void (*set_buffer_size)(struct rpc_xprt *xprt, size_t sndsize, size_t rcvsize);
     79  int (*reserve_xprt)(struct rpc_task *task);
     80  void (*release_xprt)(struct rpc_xprt *xprt, struct rpc_task *task);
     81  void (*set_port)(struct rpc_xprt *xprt, unsigned short port);
     82  void (*connect)(struct rpc_task *task);
     83  void * (*buf_alloc)(struct rpc_task *task, size_t size);
     84  void (*buf_free)(struct rpc_task *task);
     85  int (*send_request)(struct rpc_task *task);
     86  void (*set_retrans_timeout)(struct rpc_task *task);
     87  void (*timer)(struct rpc_task *task);
     88  void (*release_request)(struct rpc_task *task);
     89  void (*close)(struct rpc_xprt *xprt);
     90  void (*destroy)(struct rpc_xprt *xprt);
     91  void (*print_stats)(struct rpc_xprt *xprt, struct seq_file *seq);
     92 };
     93 
     94 struct rpc_xprt {
     95  struct rpc_xprt_ops * ops;
     96  struct socket * sock;
     97  struct sock * inet;
     98 
     99  struct rpc_timeout timeout;
    100  struct sockaddr_in addr;
    101  int prot;
    102 
    103  unsigned long cong;
    104  unsigned long cwnd;
    105 
    106  size_t rcvsize,
    107  sndsize;
    108 
    109  size_t max_payload;
    110  unsigned int tsh_size;
    111 
    112  struct rpc_wait_queue sending;
    113  struct rpc_wait_queue resend;
    114  struct rpc_wait_queue pending;
    115  struct rpc_wait_queue backlog;
    116  struct list_head free;
    117  struct rpc_rqst * slot;
    118  unsigned int max_reqs;
    119  unsigned long state;
    120  unsigned char shutdown : 1,
    121  resvport : 1;
    122 
    123  __u32 xid;
    124 
    125  u32 tcp_recm,
    126  tcp_xid,
    127  tcp_reclen,
    128  tcp_offset;
    129  unsigned long tcp_copied,
    130  tcp_flags;
    131 
    132  unsigned long connect_timeout,
    133  bind_timeout,
    134  reestablish_timeout;
    135  struct work_struct connect_worker;
    136  unsigned short port;
    137 
    138  struct work_struct task_cleanup;
    139  struct timer_list timer;
    140  unsigned long last_used,
    141  idle_timeout;
    142 
    143  spinlock_t transport_lock;
    144  spinlock_t reserve_lock;
    145  struct rpc_task * snd_task;
    146 
    147  struct list_head recv;
    148 
    149  struct {
    150  unsigned long bind_count,
    151  connect_count,
    152  connect_start,
    153  connect_time,
    154  sends,
    155  recvs,
    156  bad_xids;
    157 
    158  unsigned long long req_u,
    159  bklog_u;
    160  } stat;
    161 
    162  void (*old_data_ready)(struct sock *, int);
    163  void (*old_state_change)(struct sock *);
    164  void (*old_write_space)(struct sock *);
    165 };
    166 
    167 #define XPRT_LAST_FRAG (1 << 0)
    168 #define XPRT_COPY_RECM (1 << 1)
    169 #define XPRT_COPY_XID (1 << 2)
    170 #define XPRT_COPY_DATA (1 << 3)
    171 
    172 #endif
    173