net/rds/info.h

   1 #ifndef _RDS_INFO_H
   2 #define _RDS_INFO_H
   3
   4 struct rds_info_lengths {
   5         unsigned int    nr;
   6         unsigned int    each;
   7 };
   8
   9 struct rds_info_iterator;
  10
  11 /*
  12  * These functions must fill in the fields of @lens to reflect the size
  13  * of the available info source.  If the snapshot fits in @len then it
  14  * should be copied using @iter.  The caller will deduce if it was copied
  15  * or not by comparing the lengths.
  16  */
  17 typedef void (*rds_info_func)(struct socket *sock, unsigned int len,
  18                               struct rds_info_iterator *iter,
  19                               struct rds_info_lengths *lens);
  20
  21 void rds_info_register_func(int optname, rds_info_func func);
  22 void rds_info_deregister_func(int optname, rds_info_func func);
  23 int rds_info_getsockopt(struct socket *sock, int optname, char __user *optval,
  24                         int __user *optlen);
  25 void rds_info_copy(struct rds_info_iterator *iter, void *data,
  26                    unsigned long bytes);
  27 void rds_info_iter_unmap(struct rds_info_iterator *iter);
  28
  29
  30 #endif